зеркало из https://github.com/mozilla/gecko-dev.git
10260 строки
354 KiB
C++
10260 строки
354 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/* a presentation of a document, part 2 */
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#include "mozilla/PresShell.h"
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#include "mozilla/dom/FontFaceSet.h"
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#include "mozilla/ArrayUtils.h"
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#include "mozilla/Attributes.h"
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#include "mozilla/AutoRestore.h"
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#include "mozilla/EventDispatcher.h"
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#include "mozilla/EventStateManager.h"
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#include "mozilla/EventStates.h"
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#include "mozilla/IMEStateManager.h"
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#include "mozilla/MemoryReporting.h"
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#include "mozilla/dom/TabChild.h"
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#include "mozilla/Likely.h"
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#include "mozilla/Logging.h"
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#include "mozilla/MouseEvents.h"
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#include "mozilla/Sprintf.h"
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#include "mozilla/StaticPrefs.h"
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#include "mozilla/TextEvents.h"
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#include "mozilla/TimeStamp.h"
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#include "mozilla/TouchEvents.h"
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#include "mozilla/UniquePtr.h"
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#include "mozilla/Unused.h"
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#include <algorithm>
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#ifdef XP_WIN
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#include "winuser.h"
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#endif
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#include "gfxContext.h"
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#include "gfxPrefs.h"
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#include "gfxUserFontSet.h"
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#include "nsContentList.h"
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#include "nsPresContext.h"
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#include "nsIContent.h"
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#include "nsIContentIterator.h"
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#include "nsIPresShellInlines.h"
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#include "mozilla/dom/Element.h"
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#include "mozilla/dom/PointerEventHandler.h"
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#include "mozilla/dom/PopupBlocker.h"
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#include "nsIDocument.h"
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#include "nsAnimationManager.h"
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#include "nsNameSpaceManager.h" // for Pref-related rule management (bugs 22963,20760,31816)
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#include "nsFrame.h"
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#include "FrameLayerBuilder.h"
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#include "nsViewManager.h"
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#include "nsView.h"
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#include "nsCRTGlue.h"
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#include "prinrval.h"
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#include "nsTArray.h"
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#include "nsCOMArray.h"
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#include "nsContainerFrame.h"
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#include "mozilla/dom/Selection.h"
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#include "nsGkAtoms.h"
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#include "nsRange.h"
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#include "nsWindowSizes.h"
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#include "nsCOMPtr.h"
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#include "nsReadableUtils.h"
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#include "nsIPageSequenceFrame.h"
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#include "nsIPermissionManager.h"
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#include "nsIMozBrowserFrame.h"
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#include "nsCaret.h"
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#include "mozilla/AccessibleCaretEventHub.h"
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#include "nsFrameManager.h"
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#include "nsXPCOM.h"
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#include "nsILayoutHistoryState.h"
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#include "nsILineIterator.h" // for ScrollContentIntoView
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#include "PLDHashTable.h"
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#include "mozilla/dom/Touch.h"
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#include "mozilla/dom/TouchEvent.h"
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#include "mozilla/dom/PointerEventBinding.h"
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#include "nsIObserverService.h"
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#include "nsDocShell.h" // for reflow observation
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#include "nsIBaseWindow.h"
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#include "nsError.h"
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#include "nsLayoutUtils.h"
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#include "nsViewportInfo.h"
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#include "nsCSSRendering.h"
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// for |#ifdef DEBUG| code
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#include "prenv.h"
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#include "nsDisplayList.h"
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#include "nsRegion.h"
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#include "nsAutoLayoutPhase.h"
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#ifdef MOZ_GECKO_PROFILER
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#include "AutoProfilerStyleMarker.h"
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#endif
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#ifdef MOZ_REFLOW_PERF
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#include "nsFontMetrics.h"
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#endif
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#include "OverflowChangedTracker.h"
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#include "PositionedEventTargeting.h"
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#include "nsIReflowCallback.h"
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#include "nsPIDOMWindow.h"
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#include "nsFocusManager.h"
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#include "nsIObjectFrame.h"
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#include "nsIObjectLoadingContent.h"
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#include "nsNetUtil.h"
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#include "nsThreadUtils.h"
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#include "nsStyleSheetService.h"
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#include "gfxUtils.h"
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#include "nsSMILAnimationController.h"
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#include "SVGContentUtils.h"
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#include "SVGObserverUtils.h"
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#include "SVGFragmentIdentifier.h"
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#include "nsFrameSelection.h"
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#include "mozilla/dom/Performance.h"
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#include "nsRefreshDriver.h"
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#include "nsDOMNavigationTiming.h"
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// Drag & Drop, Clipboard
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#include "nsIDocShellTreeItem.h"
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#include "nsIURI.h"
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#include "nsIScrollableFrame.h"
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#include "nsITimer.h"
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#ifdef ACCESSIBILITY
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#include "nsAccessibilityService.h"
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#include "mozilla/a11y/DocAccessible.h"
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#ifdef DEBUG
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#include "mozilla/a11y/Logging.h"
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#endif
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#endif
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// For style data reconstruction
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#include "nsStyleChangeList.h"
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#include "nsCSSFrameConstructor.h"
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#ifdef MOZ_XUL
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#include "nsMenuFrame.h"
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#include "nsTreeBodyFrame.h"
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#include "nsIBoxObject.h"
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#include "nsITreeBoxObject.h"
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#include "nsMenuPopupFrame.h"
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#include "nsTreeColumns.h"
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#include "nsIDOMXULMultSelectCntrlEl.h"
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#include "nsIDOMXULSelectCntrlItemEl.h"
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#include "nsIDOMXULMenuListElement.h"
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#include "nsXULElement.h"
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#include "mozilla/dom/BoxObject.h"
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#endif // MOZ_XUL
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#include "mozilla/layers/CompositorBridgeChild.h"
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#include "ClientLayerManager.h"
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#include "GeckoProfiler.h"
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#include "gfxPlatform.h"
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#include "Layers.h"
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#include "LayerTreeInvalidation.h"
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#include "mozilla/css/ImageLoader.h"
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#include "mozilla/dom/DocumentTimeline.h"
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#include "mozilla/dom/ScriptSettings.h"
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#include "mozilla/ErrorResult.h"
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#include "mozilla/Preferences.h"
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#include "mozilla/Telemetry.h"
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#include "nsCanvasFrame.h"
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#include "nsIImageLoadingContent.h"
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#include "nsImageFrame.h"
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#include "nsIScreen.h"
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#include "nsIScreenManager.h"
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#include "nsPlaceholderFrame.h"
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#include "nsTransitionManager.h"
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#include "ChildIterator.h"
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#include "mozilla/RestyleManager.h"
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#include "nsIDragSession.h"
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#include "nsIFrameInlines.h"
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#include "mozilla/gfx/2D.h"
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#include "nsSubDocumentFrame.h"
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#include "nsQueryObject.h"
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#include "nsLayoutStylesheetCache.h"
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#include "mozilla/layers/InputAPZContext.h"
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#include "mozilla/layers/FocusTarget.h"
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#include "mozilla/layers/WebRenderLayerManager.h"
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#include "mozilla/layers/WebRenderUserData.h"
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#include "mozilla/ServoBindings.h"
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#include "mozilla/ServoStyleSet.h"
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#include "mozilla/StyleSheet.h"
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#include "mozilla/StyleSheetInlines.h"
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#include "mozilla/dom/ImageTracker.h"
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#include "nsIDocShellTreeOwner.h"
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#include "nsBindingManager.h"
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#include "nsClassHashtable.h"
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#include "nsHashKeys.h"
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#include "VisualViewport.h"
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#ifdef MOZ_TASK_TRACER
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#include "GeckoTaskTracer.h"
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using namespace mozilla::tasktracer;
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#endif
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#define ANCHOR_SCROLL_FLAGS \
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(nsIPresShell::SCROLL_OVERFLOW_HIDDEN | nsIPresShell::SCROLL_NO_PARENT_FRAMES)
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// define the scalfactor of drag and drop images
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// relative to the max screen height/width
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#define RELATIVE_SCALEFACTOR 0.0925f
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using namespace mozilla;
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using namespace mozilla::css;
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using namespace mozilla::dom;
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using namespace mozilla::gfx;
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using namespace mozilla::layers;
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using namespace mozilla::gfx;
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using namespace mozilla::layout;
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using PaintFrameFlags = nsLayoutUtils::PaintFrameFlags;
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typedef ScrollableLayerGuid::ViewID ViewID;
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CapturingContentInfo nsIPresShell::gCaptureInfo = {
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false /* mAllowed */, false /* mPointerLock */,
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false /* mRetargetToElement */, false /* mPreventDrag */};
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nsIContent* nsIPresShell::gKeyDownTarget;
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// RangePaintInfo is used to paint ranges to offscreen buffers
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struct RangePaintInfo {
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RefPtr<nsRange> mRange;
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nsDisplayListBuilder mBuilder;
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nsDisplayList mList;
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// offset of builder's reference frame to the root frame
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nsPoint mRootOffset;
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RangePaintInfo(nsRange* aRange, nsIFrame* aFrame)
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: mRange(aRange),
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mBuilder(aFrame, nsDisplayListBuilderMode::PAINTING, false) {
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MOZ_COUNT_CTOR(RangePaintInfo);
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mBuilder.BeginFrame();
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}
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~RangePaintInfo() {
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mList.DeleteAll(&mBuilder);
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mBuilder.EndFrame();
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MOZ_COUNT_DTOR(RangePaintInfo);
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}
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};
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#undef NOISY
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// ----------------------------------------------------------------------
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#ifdef DEBUG
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// Set the environment variable GECKO_VERIFY_REFLOW_FLAGS to one or
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// more of the following flags (comma separated) for handy debug
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// output.
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static uint32_t gVerifyReflowFlags;
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struct VerifyReflowFlags {
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const char* name;
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uint32_t bit;
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};
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static const VerifyReflowFlags gFlags[] = {
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// clang-format off
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{ "verify", VERIFY_REFLOW_ON },
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{ "reflow", VERIFY_REFLOW_NOISY },
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{ "all", VERIFY_REFLOW_ALL },
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{ "list-commands", VERIFY_REFLOW_DUMP_COMMANDS },
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{ "noisy-commands", VERIFY_REFLOW_NOISY_RC },
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{ "really-noisy-commands", VERIFY_REFLOW_REALLY_NOISY_RC },
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{ "resize", VERIFY_REFLOW_DURING_RESIZE_REFLOW },
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// clang-format on
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};
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#define NUM_VERIFY_REFLOW_FLAGS (sizeof(gFlags) / sizeof(gFlags[0]))
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static void ShowVerifyReflowFlags() {
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printf("Here are the available GECKO_VERIFY_REFLOW_FLAGS:\n");
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const VerifyReflowFlags* flag = gFlags;
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const VerifyReflowFlags* limit = gFlags + NUM_VERIFY_REFLOW_FLAGS;
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while (flag < limit) {
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printf(" %s\n", flag->name);
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++flag;
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}
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printf("Note: GECKO_VERIFY_REFLOW_FLAGS is a comma separated list of flag\n");
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printf("names (no whitespace)\n");
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}
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#endif
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//========================================================================
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//========================================================================
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//========================================================================
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#ifdef MOZ_REFLOW_PERF
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class ReflowCountMgr;
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static const char kGrandTotalsStr[] = "Grand Totals";
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// Counting Class
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class ReflowCounter {
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public:
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explicit ReflowCounter(ReflowCountMgr* aMgr = nullptr);
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~ReflowCounter();
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void ClearTotals();
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void DisplayTotals(const char* aStr);
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void DisplayDiffTotals(const char* aStr);
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void DisplayHTMLTotals(const char* aStr);
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void Add() { mTotal++; }
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void Add(uint32_t aTotal) { mTotal += aTotal; }
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void CalcDiffInTotals();
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void SetTotalsCache();
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void SetMgr(ReflowCountMgr* aMgr) { mMgr = aMgr; }
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uint32_t GetTotal() { return mTotal; }
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protected:
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void DisplayTotals(uint32_t aTotal, const char* aTitle);
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void DisplayHTMLTotals(uint32_t aTotal, const char* aTitle);
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uint32_t mTotal;
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uint32_t mCacheTotal;
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ReflowCountMgr* mMgr; // weak reference (don't delete)
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};
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// Counting Class
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class IndiReflowCounter {
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public:
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explicit IndiReflowCounter(ReflowCountMgr* aMgr = nullptr)
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: mFrame(nullptr),
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mCount(0),
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mMgr(aMgr),
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mCounter(aMgr),
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mHasBeenOutput(false) {}
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virtual ~IndiReflowCounter() {}
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nsAutoString mName;
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nsIFrame* mFrame; // weak reference (don't delete)
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int32_t mCount;
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ReflowCountMgr* mMgr; // weak reference (don't delete)
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ReflowCounter mCounter;
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bool mHasBeenOutput;
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};
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//--------------------
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// Manager Class
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//--------------------
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class ReflowCountMgr {
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public:
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ReflowCountMgr();
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virtual ~ReflowCountMgr();
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void ClearTotals();
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void ClearGrandTotals();
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void DisplayTotals(const char* aStr);
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void DisplayHTMLTotals(const char* aStr);
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void DisplayDiffsInTotals();
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void Add(const char* aName, nsIFrame* aFrame);
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ReflowCounter* LookUp(const char* aName);
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void PaintCount(const char* aName, gfxContext* aRenderingContext,
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nsPresContext* aPresContext, nsIFrame* aFrame,
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const nsPoint& aOffset, uint32_t aColor);
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FILE* GetOutFile() { return mFD; }
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void SetPresContext(nsPresContext* aPresContext) {
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mPresContext = aPresContext; // weak reference
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}
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void SetPresShell(nsIPresShell* aPresShell) {
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mPresShell = aPresShell; // weak reference
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}
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void SetDumpFrameCounts(bool aVal) { mDumpFrameCounts = aVal; }
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void SetDumpFrameByFrameCounts(bool aVal) { mDumpFrameByFrameCounts = aVal; }
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void SetPaintFrameCounts(bool aVal) { mPaintFrameByFrameCounts = aVal; }
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bool IsPaintingFrameCounts() { return mPaintFrameByFrameCounts; }
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protected:
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void DisplayTotals(uint32_t aTotal, uint32_t* aDupArray, char* aTitle);
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void DisplayHTMLTotals(uint32_t aTotal, uint32_t* aDupArray, char* aTitle);
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void DoGrandTotals();
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void DoIndiTotalsTree();
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// HTML Output Methods
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void DoGrandHTMLTotals();
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nsClassHashtable<nsCharPtrHashKey, ReflowCounter> mCounts;
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nsClassHashtable<nsCharPtrHashKey, IndiReflowCounter> mIndiFrameCounts;
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FILE* mFD;
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bool mDumpFrameCounts;
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bool mDumpFrameByFrameCounts;
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bool mPaintFrameByFrameCounts;
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bool mCycledOnce;
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// Root Frame for Individual Tracking
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nsPresContext* mPresContext;
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nsIPresShell* mPresShell;
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// ReflowCountMgr gReflowCountMgr;
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};
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#endif
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//========================================================================
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// comment out to hide caret
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#define SHOW_CARET
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// The upper bound on the amount of time to spend reflowing, in
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// microseconds. When this bound is exceeded and reflow commands are
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// still queued up, a reflow event is posted. The idea is for reflow
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// to not hog the processor beyond the time specifed in
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// gMaxRCProcessingTime. This data member is initialized from the
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// layout.reflow.timeslice pref.
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#define NS_MAX_REFLOW_TIME 1000000
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static int32_t gMaxRCProcessingTime = -1;
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struct nsCallbackEventRequest {
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nsIReflowCallback* callback;
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nsCallbackEventRequest* next;
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};
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// ----------------------------------------------------------------------------
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//
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// NOTE(emilio): It'd be nice for this to assert that our document isn't in the
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// bfcache, but font pref changes don't care about that, and maybe / probably
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// shouldn't.
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#ifdef DEBUG
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#define ASSERT_REFLOW_SCHEDULED_STATE() \
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{ \
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if (ObservingLayoutFlushes()) { \
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MOZ_ASSERT( \
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mDocument->GetBFCacheEntry() || \
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mPresContext->RefreshDriver()->IsLayoutFlushObserver(this), \
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"Unexpected state"); \
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} else { \
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MOZ_ASSERT(!mPresContext->RefreshDriver()->IsLayoutFlushObserver(this), \
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"Unexpected state"); \
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} \
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}
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#else
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#define ASSERT_REFLOW_SCHEDULED_STATE() /* nothing */
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#endif
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class nsAutoCauseReflowNotifier {
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public:
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explicit nsAutoCauseReflowNotifier(PresShell* aShell) : mShell(aShell) {
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mShell->WillCauseReflow();
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}
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~nsAutoCauseReflowNotifier() {
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// This check should not be needed. Currently the only place that seem
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// to need it is the code that deals with bug 337586.
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if (!mShell->mHaveShutDown) {
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mShell->DidCauseReflow();
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} else {
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nsContentUtils::RemoveScriptBlocker();
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}
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}
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PresShell* mShell;
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};
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class MOZ_STACK_CLASS nsPresShellEventCB : public EventDispatchingCallback {
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public:
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explicit nsPresShellEventCB(PresShell* aPresShell) : mPresShell(aPresShell) {}
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virtual void HandleEvent(EventChainPostVisitor& aVisitor) override {
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if (aVisitor.mPresContext && aVisitor.mEvent->mClass != eBasicEventClass) {
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if (aVisitor.mEvent->mMessage == eMouseDown ||
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aVisitor.mEvent->mMessage == eMouseUp) {
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// Mouse-up and mouse-down events call nsFrame::HandlePress/Release
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// which call GetContentOffsetsFromPoint which requires up-to-date
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// layout. Bring layout up-to-date now so that GetCurrentEventFrame()
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// below will return a real frame and we don't have to worry about
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// destroying it by flushing later.
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mPresShell->FlushPendingNotifications(FlushType::Layout);
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} else if (aVisitor.mEvent->mMessage == eWheel &&
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aVisitor.mEventStatus != nsEventStatus_eConsumeNoDefault) {
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nsIFrame* frame = mPresShell->GetCurrentEventFrame();
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if (frame) {
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// chrome (including addons) should be able to know if content
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// handles both D3E "wheel" event and legacy mouse scroll events.
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// We should dispatch legacy mouse events before dispatching the
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// "wheel" event into system group.
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RefPtr<EventStateManager> esm =
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aVisitor.mPresContext->EventStateManager();
|
|
esm->DispatchLegacyMouseScrollEvents(
|
|
frame, aVisitor.mEvent->AsWheelEvent(), &aVisitor.mEventStatus);
|
|
}
|
|
}
|
|
nsIFrame* frame = mPresShell->GetCurrentEventFrame();
|
|
if (!frame && (aVisitor.mEvent->mMessage == eMouseUp ||
|
|
aVisitor.mEvent->mMessage == eTouchEnd)) {
|
|
// Redirect BUTTON_UP and TOUCH_END events to the root frame to ensure
|
|
// that capturing is released.
|
|
frame = mPresShell->GetRootFrame();
|
|
}
|
|
if (frame) {
|
|
frame->HandleEvent(aVisitor.mPresContext, aVisitor.mEvent->AsGUIEvent(),
|
|
&aVisitor.mEventStatus);
|
|
}
|
|
}
|
|
}
|
|
|
|
RefPtr<PresShell> mPresShell;
|
|
};
|
|
|
|
class nsBeforeFirstPaintDispatcher : public Runnable {
|
|
public:
|
|
explicit nsBeforeFirstPaintDispatcher(nsIDocument* aDocument)
|
|
: mozilla::Runnable("nsBeforeFirstPaintDispatcher"),
|
|
mDocument(aDocument) {}
|
|
|
|
// Fires the "before-first-paint" event so that interested parties (right now,
|
|
// the mobile browser) are aware of it.
|
|
NS_IMETHOD Run() override {
|
|
nsCOMPtr<nsIObserverService> observerService =
|
|
mozilla::services::GetObserverService();
|
|
if (observerService) {
|
|
observerService->NotifyObservers(mDocument, "before-first-paint",
|
|
nullptr);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
private:
|
|
nsCOMPtr<nsIDocument> mDocument;
|
|
};
|
|
|
|
// This is a helper class to track whether the targeted frame is destroyed after
|
|
// dispatching pointer events. In that case, we need the original targeted
|
|
// content so that we can dispatch the mouse events to it.
|
|
class MOZ_STACK_CLASS AutoPointerEventTargetUpdater final {
|
|
public:
|
|
AutoPointerEventTargetUpdater(PresShell* aShell, WidgetEvent* aEvent,
|
|
nsIFrame* aFrame, nsIContent** aTargetContent) {
|
|
MOZ_ASSERT(aEvent);
|
|
if (!aTargetContent || aEvent->mClass != ePointerEventClass) {
|
|
// Make the destructor happy.
|
|
mTargetContent = nullptr;
|
|
return;
|
|
}
|
|
MOZ_ASSERT(aShell);
|
|
MOZ_ASSERT(aFrame);
|
|
MOZ_ASSERT(!aFrame->GetContent() ||
|
|
aShell->GetDocument() == aFrame->GetContent()->OwnerDoc());
|
|
|
|
MOZ_ASSERT(PointerEventHandler::IsPointerEventEnabled());
|
|
mShell = aShell;
|
|
mWeakFrame = aFrame;
|
|
mTargetContent = aTargetContent;
|
|
aShell->mPointerEventTarget = aFrame->GetContent();
|
|
}
|
|
|
|
~AutoPointerEventTargetUpdater() {
|
|
if (!mTargetContent || !mShell || mWeakFrame.IsAlive()) {
|
|
return;
|
|
}
|
|
mShell->mPointerEventTarget.swap(*mTargetContent);
|
|
}
|
|
|
|
private:
|
|
RefPtr<PresShell> mShell;
|
|
AutoWeakFrame mWeakFrame;
|
|
nsIContent** mTargetContent;
|
|
};
|
|
|
|
void nsIPresShell::DirtyRootsList::Add(nsIFrame* aFrame) {
|
|
// Is this root already scheduled for reflow?
|
|
// FIXME: This could possibly be changed to a uniqueness assertion, with some
|
|
// work in ResizeReflowIgnoreOverride (and maybe others?)
|
|
if (mList.Contains(aFrame)) {
|
|
// We don't expect frame to change depths.
|
|
MOZ_ASSERT(aFrame->GetDepthInFrameTree() ==
|
|
mList[mList.IndexOf(aFrame)].mDepth);
|
|
return;
|
|
}
|
|
|
|
mList.InsertElementSorted(
|
|
FrameAndDepth{aFrame, aFrame->GetDepthInFrameTree()},
|
|
FrameAndDepth::CompareByReverseDepth{});
|
|
}
|
|
|
|
void nsIPresShell::DirtyRootsList::Remove(nsIFrame* aFrame) {
|
|
mList.RemoveElement(aFrame);
|
|
}
|
|
|
|
nsIFrame* nsIPresShell::DirtyRootsList::PopShallowestRoot() {
|
|
// List is sorted in order of decreasing depth, so there are no deeper
|
|
// frames than the last one.
|
|
const FrameAndDepth& lastFAD = mList.LastElement();
|
|
nsIFrame* frame = lastFAD.mFrame;
|
|
// We don't expect frame to change depths.
|
|
MOZ_ASSERT(frame->GetDepthInFrameTree() == lastFAD.mDepth);
|
|
mList.RemoveLastElement();
|
|
return frame;
|
|
}
|
|
|
|
void nsIPresShell::DirtyRootsList::Clear() { mList.Clear(); }
|
|
|
|
bool nsIPresShell::DirtyRootsList::Contains(nsIFrame* aFrame) const {
|
|
return mList.Contains(aFrame);
|
|
}
|
|
|
|
bool nsIPresShell::DirtyRootsList::IsEmpty() const { return mList.IsEmpty(); }
|
|
|
|
bool nsIPresShell::DirtyRootsList::FrameIsAncestorOfDirtyRoot(
|
|
nsIFrame* aFrame) const {
|
|
MOZ_ASSERT(aFrame);
|
|
|
|
// Look for a path from any dirty roots to aFrame, following GetParent().
|
|
// This check mirrors what FrameNeedsReflow() would have done if the reflow
|
|
// root didn't get in the way.
|
|
for (nsIFrame* dirtyFrame : mList) {
|
|
do {
|
|
if (dirtyFrame == aFrame) {
|
|
return true;
|
|
}
|
|
dirtyFrame = dirtyFrame->GetParent();
|
|
} while (dirtyFrame);
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool PresShell::sDisableNonTestMouseEvents = false;
|
|
|
|
mozilla::LazyLogModule PresShell::gLog("PresShell");
|
|
|
|
mozilla::TimeStamp PresShell::sLastInputCreated;
|
|
mozilla::TimeStamp PresShell::sLastInputProcessed;
|
|
|
|
bool PresShell::sProcessInteractable = false;
|
|
|
|
static bool gVerifyReflowEnabled;
|
|
|
|
bool nsIPresShell::GetVerifyReflowEnable() {
|
|
#ifdef DEBUG
|
|
static bool firstTime = true;
|
|
if (firstTime) {
|
|
firstTime = false;
|
|
char* flags = PR_GetEnv("GECKO_VERIFY_REFLOW_FLAGS");
|
|
if (flags) {
|
|
bool error = false;
|
|
|
|
for (;;) {
|
|
char* comma = PL_strchr(flags, ',');
|
|
if (comma) *comma = '\0';
|
|
|
|
bool found = false;
|
|
const VerifyReflowFlags* flag = gFlags;
|
|
const VerifyReflowFlags* limit = gFlags + NUM_VERIFY_REFLOW_FLAGS;
|
|
while (flag < limit) {
|
|
if (PL_strcasecmp(flag->name, flags) == 0) {
|
|
gVerifyReflowFlags |= flag->bit;
|
|
found = true;
|
|
break;
|
|
}
|
|
++flag;
|
|
}
|
|
|
|
if (!found) error = true;
|
|
|
|
if (!comma) break;
|
|
|
|
*comma = ',';
|
|
flags = comma + 1;
|
|
}
|
|
|
|
if (error) ShowVerifyReflowFlags();
|
|
}
|
|
|
|
if (VERIFY_REFLOW_ON & gVerifyReflowFlags) {
|
|
gVerifyReflowEnabled = true;
|
|
|
|
printf("Note: verifyreflow is enabled");
|
|
if (VERIFY_REFLOW_NOISY & gVerifyReflowFlags) {
|
|
printf(" (noisy)");
|
|
}
|
|
if (VERIFY_REFLOW_ALL & gVerifyReflowFlags) {
|
|
printf(" (all)");
|
|
}
|
|
if (VERIFY_REFLOW_DUMP_COMMANDS & gVerifyReflowFlags) {
|
|
printf(" (show reflow commands)");
|
|
}
|
|
if (VERIFY_REFLOW_NOISY_RC & gVerifyReflowFlags) {
|
|
printf(" (noisy reflow commands)");
|
|
if (VERIFY_REFLOW_REALLY_NOISY_RC & gVerifyReflowFlags) {
|
|
printf(" (REALLY noisy reflow commands)");
|
|
}
|
|
}
|
|
printf("\n");
|
|
}
|
|
}
|
|
#endif
|
|
return gVerifyReflowEnabled;
|
|
}
|
|
|
|
void nsIPresShell::SetVerifyReflowEnable(bool aEnabled) {
|
|
gVerifyReflowEnabled = aEnabled;
|
|
}
|
|
|
|
void nsIPresShell::AddAutoWeakFrame(AutoWeakFrame* aWeakFrame) {
|
|
if (aWeakFrame->GetFrame()) {
|
|
aWeakFrame->GetFrame()->AddStateBits(NS_FRAME_EXTERNAL_REFERENCE);
|
|
}
|
|
aWeakFrame->SetPreviousWeakFrame(mAutoWeakFrames);
|
|
mAutoWeakFrames = aWeakFrame;
|
|
}
|
|
|
|
void nsIPresShell::AddWeakFrame(WeakFrame* aWeakFrame) {
|
|
if (aWeakFrame->GetFrame()) {
|
|
aWeakFrame->GetFrame()->AddStateBits(NS_FRAME_EXTERNAL_REFERENCE);
|
|
}
|
|
MOZ_ASSERT(!mWeakFrames.GetEntry(aWeakFrame));
|
|
mWeakFrames.PutEntry(aWeakFrame);
|
|
}
|
|
|
|
void nsIPresShell::RemoveAutoWeakFrame(AutoWeakFrame* aWeakFrame) {
|
|
if (mAutoWeakFrames == aWeakFrame) {
|
|
mAutoWeakFrames = aWeakFrame->GetPreviousWeakFrame();
|
|
return;
|
|
}
|
|
AutoWeakFrame* nextWeak = mAutoWeakFrames;
|
|
while (nextWeak && nextWeak->GetPreviousWeakFrame() != aWeakFrame) {
|
|
nextWeak = nextWeak->GetPreviousWeakFrame();
|
|
}
|
|
if (nextWeak) {
|
|
nextWeak->SetPreviousWeakFrame(aWeakFrame->GetPreviousWeakFrame());
|
|
}
|
|
}
|
|
|
|
void nsIPresShell::RemoveWeakFrame(WeakFrame* aWeakFrame) {
|
|
MOZ_ASSERT(mWeakFrames.GetEntry(aWeakFrame));
|
|
mWeakFrames.RemoveEntry(aWeakFrame);
|
|
}
|
|
|
|
already_AddRefed<nsFrameSelection> nsIPresShell::FrameSelection() {
|
|
RefPtr<nsFrameSelection> ret = mSelection;
|
|
return ret.forget();
|
|
}
|
|
|
|
//----------------------------------------------------------------------
|
|
|
|
static bool sSynthMouseMove = true;
|
|
static uint32_t sNextPresShellId;
|
|
|
|
/* static */ bool PresShell::AccessibleCaretEnabled(nsIDocShell* aDocShell) {
|
|
// If the pref forces it on, then enable it.
|
|
if (StaticPrefs::layout_accessiblecaret_enabled()) {
|
|
return true;
|
|
}
|
|
// If the touch pref is on, and touch events are enabled (this depends
|
|
// on the specific device running), then enable it.
|
|
if (StaticPrefs::layout_accessiblecaret_enabled_on_touch() &&
|
|
dom::TouchEvent::PrefEnabled(aDocShell)) {
|
|
return true;
|
|
}
|
|
// Otherwise, disabled.
|
|
return false;
|
|
}
|
|
|
|
nsIPresShell::nsIPresShell()
|
|
: mViewManager(nullptr),
|
|
mFrameManager(nullptr),
|
|
#ifdef ACCESSIBILITY
|
|
mDocAccessible(nullptr),
|
|
#endif
|
|
#ifdef DEBUG
|
|
mDrawEventTargetFrame(nullptr),
|
|
#endif
|
|
mPaintCount(0),
|
|
mAutoWeakFrames(nullptr),
|
|
mCanvasBackgroundColor(NS_RGBA(0, 0, 0, 0)),
|
|
mSelectionFlags(0),
|
|
mChangeNestCount(0),
|
|
mRenderFlags(0),
|
|
mDidInitialize(false),
|
|
mIsDestroying(false),
|
|
mIsReflowing(false),
|
|
mIsObservingDocument(false),
|
|
mIsDocumentGone(false),
|
|
mPaintingSuppressed(false),
|
|
mIsActive(false),
|
|
mFrozen(false),
|
|
mIsFirstPaint(false),
|
|
mObservesMutationsForPrint(false),
|
|
mWasLastReflowInterrupted(false),
|
|
mVisualViewportSizeSet(false),
|
|
mNeedLayoutFlush(true),
|
|
mNeedStyleFlush(true),
|
|
mObservingStyleFlushes(false),
|
|
mObservingLayoutFlushes(false),
|
|
mResizeEventPending(false),
|
|
mNeedThrottledAnimationFlush(true),
|
|
mPresShellId(0),
|
|
mFontSizeInflationEmPerLine(0),
|
|
mFontSizeInflationMinTwips(0),
|
|
mFontSizeInflationLineThreshold(0),
|
|
mFontSizeInflationForceEnabled(false),
|
|
mFontSizeInflationDisabledInMasterProcess(false),
|
|
mFontSizeInflationEnabled(false),
|
|
mPaintingIsFrozen(false),
|
|
mIsNeverPainting(false),
|
|
mInFlush(false),
|
|
mCurrentEventFrame(nullptr) {
|
|
}
|
|
|
|
PresShell::PresShell()
|
|
: mCaretEnabled(false),
|
|
#ifdef DEBUG
|
|
mInVerifyReflow(false),
|
|
mCurrentReflowRoot(nullptr),
|
|
#endif
|
|
#ifdef MOZ_REFLOW_PERF
|
|
mReflowCountMgr(nullptr),
|
|
#endif
|
|
mMouseLocation(NS_UNCONSTRAINEDSIZE, NS_UNCONSTRAINEDSIZE),
|
|
mFirstCallbackEventRequest(nullptr),
|
|
mLastCallbackEventRequest(nullptr),
|
|
mLastReflowStart(0.0),
|
|
mLastAnchorScrollPositionY(0),
|
|
mActiveSuppressDisplayport(0),
|
|
mAPZFocusSequenceNumber(0),
|
|
mDocumentLoading(false),
|
|
mIgnoreFrameDestruction(false),
|
|
mHaveShutDown(false),
|
|
mLastRootReflowHadUnconstrainedBSize(false),
|
|
mNoDelayedMouseEvents(false),
|
|
mNoDelayedKeyEvents(false),
|
|
mShouldUnsuppressPainting(false),
|
|
mApproximateFrameVisibilityVisited(false),
|
|
mNextPaintCompressed(false),
|
|
mHasCSSBackgroundColor(false),
|
|
mIsLastChromeOnlyEscapeKeyConsumed(false),
|
|
mHasReceivedPaintMessage(false),
|
|
mIsLastKeyDownCanceled(false),
|
|
mHasHandledUserInput(false),
|
|
mResolutionUpdated(false),
|
|
mForceDispatchKeyPressEventsForNonPrintableKeys(false),
|
|
mForceUseLegacyKeyCodeAndCharCodeValues(false),
|
|
mInitializedWithKeyPressEventDispatchingBlacklist(false) {
|
|
MOZ_LOG(gLog, LogLevel::Debug, ("PresShell::PresShell this=%p", this));
|
|
|
|
#ifdef MOZ_REFLOW_PERF
|
|
mReflowCountMgr = MakeUnique<ReflowCountMgr>();
|
|
mReflowCountMgr->SetPresContext(mPresContext);
|
|
mReflowCountMgr->SetPresShell(this);
|
|
#endif
|
|
mLastOSWake = mLoadBegin = TimeStamp::Now();
|
|
|
|
mSelectionFlags =
|
|
nsISelectionDisplay::DISPLAY_TEXT | nsISelectionDisplay::DISPLAY_IMAGES;
|
|
mIsActive = true;
|
|
// FIXME/bug 735029: find a better solution to this problem
|
|
mIsFirstPaint = true;
|
|
mPresShellId = sNextPresShellId++;
|
|
mFrozen = false;
|
|
mRenderFlags = 0;
|
|
|
|
mVisualViewportSizeSet = false;
|
|
|
|
static bool addedSynthMouseMove = false;
|
|
if (!addedSynthMouseMove) {
|
|
Preferences::AddBoolVarCache(&sSynthMouseMove,
|
|
"layout.reflow.synthMouseMove", true);
|
|
addedSynthMouseMove = true;
|
|
}
|
|
PointerEventHandler::Initialize();
|
|
mPaintingIsFrozen = false;
|
|
mHasCSSBackgroundColor = true;
|
|
mIsLastChromeOnlyEscapeKeyConsumed = false;
|
|
mHasReceivedPaintMessage = false;
|
|
}
|
|
|
|
NS_IMPL_ISUPPORTS(PresShell, nsIPresShell, nsIDocumentObserver,
|
|
nsISelectionController, nsISelectionDisplay, nsIObserver,
|
|
nsISupportsWeakReference, nsIMutationObserver)
|
|
|
|
PresShell::~PresShell() {
|
|
MOZ_LOG(gLog, LogLevel::Debug, ("PresShell::~PresShell this=%p", this));
|
|
|
|
if (!mHaveShutDown) {
|
|
MOZ_ASSERT_UNREACHABLE("Someone did not call nsIPresShell::destroy");
|
|
Destroy();
|
|
}
|
|
|
|
NS_ASSERTION(mCurrentEventContentStack.Count() == 0,
|
|
"Huh, event content left on the stack in pres shell dtor!");
|
|
NS_ASSERTION(mFirstCallbackEventRequest == nullptr &&
|
|
mLastCallbackEventRequest == nullptr,
|
|
"post-reflow queues not empty. This means we're leaking");
|
|
|
|
// Verify that if painting was frozen, but we're being removed from the tree,
|
|
// that we now re-enable painting on our refresh driver, since it may need to
|
|
// be re-used by another presentation.
|
|
if (mPaintingIsFrozen) {
|
|
mPresContext->RefreshDriver()->Thaw();
|
|
}
|
|
|
|
MOZ_ASSERT(mAllocatedPointers.IsEmpty(),
|
|
"Some pres arena objects were not freed");
|
|
|
|
mStyleSet = nullptr;
|
|
mFrameManager = nullptr;
|
|
mFrameConstructor = nullptr;
|
|
|
|
mCurrentEventContent = nullptr;
|
|
}
|
|
|
|
/**
|
|
* Initialize the presentation shell. Create view manager and style
|
|
* manager.
|
|
* Note this can't be merged into our constructor because caret initialization
|
|
* calls AddRef() on us.
|
|
*/
|
|
void PresShell::Init(nsIDocument* aDocument, nsPresContext* aPresContext,
|
|
nsViewManager* aViewManager,
|
|
UniquePtr<ServoStyleSet> aStyleSet) {
|
|
MOZ_ASSERT(aDocument, "null ptr");
|
|
MOZ_ASSERT(aPresContext, "null ptr");
|
|
MOZ_ASSERT(aViewManager, "null ptr");
|
|
MOZ_ASSERT(!mDocument, "already initialized");
|
|
|
|
if (!aDocument || !aPresContext || !aViewManager || mDocument) {
|
|
return;
|
|
}
|
|
|
|
mDocument = aDocument;
|
|
mViewManager = aViewManager;
|
|
|
|
// mDocument is now set. It might have a display document whose "need layout/
|
|
// style" flush flags are not set, but ours will be set. To keep these
|
|
// consistent, call the flag setting functions to propagate those flags up
|
|
// to the display document.
|
|
SetNeedLayoutFlush();
|
|
SetNeedStyleFlush();
|
|
|
|
// Create our frame constructor.
|
|
mFrameConstructor = MakeUnique<nsCSSFrameConstructor>(mDocument, this);
|
|
|
|
mFrameManager = mFrameConstructor.get();
|
|
|
|
// The document viewer owns both view manager and pres shell.
|
|
mViewManager->SetPresShell(this);
|
|
|
|
// Bind the context to the presentation shell.
|
|
mPresContext = aPresContext;
|
|
mPresContext->AttachShell(this);
|
|
|
|
// Now we can initialize the style set. Make sure to set the member before
|
|
// calling Init, since various subroutines need to find the style set off
|
|
// the PresContext during initialization.
|
|
mStyleSet = std::move(aStyleSet);
|
|
mStyleSet->Init(aPresContext);
|
|
|
|
// Notify our prescontext that it now has a compatibility mode. Note that
|
|
// this MUST happen after we set up our style set but before we create any
|
|
// frames.
|
|
mPresContext->CompatibilityModeChanged();
|
|
|
|
// Add the preference style sheet.
|
|
UpdatePreferenceStyles();
|
|
|
|
bool accessibleCaretEnabled =
|
|
AccessibleCaretEnabled(mDocument->GetDocShell());
|
|
if (accessibleCaretEnabled) {
|
|
// Need to happen before nsFrameSelection has been set up.
|
|
mAccessibleCaretEventHub = new AccessibleCaretEventHub(this);
|
|
}
|
|
|
|
mSelection = new nsFrameSelection();
|
|
|
|
RefPtr<nsFrameSelection> frameSelection = mSelection;
|
|
frameSelection->Init(this, nullptr, accessibleCaretEnabled);
|
|
|
|
// Important: this has to happen after the selection has been set up
|
|
#ifdef SHOW_CARET
|
|
// make the caret
|
|
mCaret = new nsCaret();
|
|
mCaret->Init(this);
|
|
mOriginalCaret = mCaret;
|
|
|
|
// SetCaretEnabled(true); // make it show in browser windows
|
|
#endif
|
|
// set up selection to be displayed in document
|
|
// Don't enable selection for print media
|
|
nsPresContext::nsPresContextType type = aPresContext->Type();
|
|
if (type != nsPresContext::eContext_PrintPreview &&
|
|
type != nsPresContext::eContext_Print)
|
|
SetDisplaySelection(nsISelectionController::SELECTION_DISABLED);
|
|
|
|
if (gMaxRCProcessingTime == -1) {
|
|
gMaxRCProcessingTime =
|
|
Preferences::GetInt("layout.reflow.timeslice", NS_MAX_REFLOW_TIME);
|
|
}
|
|
|
|
if (nsStyleSheetService* ss = nsStyleSheetService::GetInstance()) {
|
|
ss->RegisterPresShell(this);
|
|
}
|
|
|
|
{
|
|
nsCOMPtr<nsIObserverService> os = mozilla::services::GetObserverService();
|
|
if (os) {
|
|
#ifdef MOZ_XUL
|
|
os->AddObserver(this, "chrome-flush-skin-caches", false);
|
|
#endif
|
|
os->AddObserver(this, "memory-pressure", false);
|
|
os->AddObserver(this, NS_WIDGET_WAKE_OBSERVER_TOPIC, false);
|
|
if (XRE_IsParentProcess() && !sProcessInteractable) {
|
|
os->AddObserver(this, "sessionstore-one-or-no-tab-restored", false);
|
|
}
|
|
os->AddObserver(this, "font-info-updated", false);
|
|
}
|
|
}
|
|
|
|
#ifdef MOZ_REFLOW_PERF
|
|
if (mReflowCountMgr) {
|
|
bool paintFrameCounts =
|
|
Preferences::GetBool("layout.reflow.showframecounts");
|
|
|
|
bool dumpFrameCounts =
|
|
Preferences::GetBool("layout.reflow.dumpframecounts");
|
|
|
|
bool dumpFrameByFrameCounts =
|
|
Preferences::GetBool("layout.reflow.dumpframebyframecounts");
|
|
|
|
mReflowCountMgr->SetDumpFrameCounts(dumpFrameCounts);
|
|
mReflowCountMgr->SetDumpFrameByFrameCounts(dumpFrameByFrameCounts);
|
|
mReflowCountMgr->SetPaintFrameCounts(paintFrameCounts);
|
|
}
|
|
#endif
|
|
|
|
if (mDocument->HasAnimationController()) {
|
|
nsSMILAnimationController* animCtrl = mDocument->GetAnimationController();
|
|
animCtrl->NotifyRefreshDriverCreated(GetPresContext()->RefreshDriver());
|
|
}
|
|
|
|
for (DocumentTimeline* timeline : mDocument->Timelines()) {
|
|
timeline->NotifyRefreshDriverCreated(GetPresContext()->RefreshDriver());
|
|
}
|
|
|
|
// Get our activeness from the docShell.
|
|
QueryIsActive();
|
|
|
|
// Setup our font inflation preferences.
|
|
mFontSizeInflationEmPerLine = nsLayoutUtils::FontSizeInflationEmPerLine();
|
|
mFontSizeInflationMinTwips = nsLayoutUtils::FontSizeInflationMinTwips();
|
|
mFontSizeInflationLineThreshold =
|
|
nsLayoutUtils::FontSizeInflationLineThreshold();
|
|
mFontSizeInflationForceEnabled =
|
|
nsLayoutUtils::FontSizeInflationForceEnabled();
|
|
mFontSizeInflationDisabledInMasterProcess =
|
|
nsLayoutUtils::FontSizeInflationDisabledInMasterProcess();
|
|
// We'll compute the font size inflation state in Initialize(), when we know
|
|
// the document type.
|
|
|
|
mTouchManager.Init(this, mDocument);
|
|
|
|
if (mPresContext->IsRootContentDocument()) {
|
|
mZoomConstraintsClient = new ZoomConstraintsClient();
|
|
mZoomConstraintsClient->Init(this, mDocument);
|
|
|
|
// We call this to create mMobileViewportManager, if it is needed.
|
|
UpdateViewportOverridden(false);
|
|
}
|
|
}
|
|
|
|
enum TextPerfLogType { eLog_reflow, eLog_loaddone, eLog_totals };
|
|
|
|
static void LogTextPerfStats(gfxTextPerfMetrics* aTextPerf,
|
|
PresShell* aPresShell,
|
|
const gfxTextPerfMetrics::TextCounts& aCounts,
|
|
float aTime, TextPerfLogType aLogType,
|
|
const char* aURL) {
|
|
LogModule* tpLog = gfxPlatform::GetLog(eGfxLog_textperf);
|
|
|
|
// ignore XUL contexts unless at debug level
|
|
mozilla::LogLevel logLevel = LogLevel::Warning;
|
|
if (aCounts.numContentTextRuns == 0) {
|
|
logLevel = LogLevel::Debug;
|
|
}
|
|
|
|
if (!MOZ_LOG_TEST(tpLog, logLevel)) {
|
|
return;
|
|
}
|
|
|
|
char prefix[256];
|
|
|
|
switch (aLogType) {
|
|
case eLog_reflow:
|
|
SprintfLiteral(prefix, "(textperf-reflow) %p time-ms: %7.0f", aPresShell,
|
|
aTime);
|
|
break;
|
|
case eLog_loaddone:
|
|
SprintfLiteral(prefix, "(textperf-loaddone) %p time-ms: %7.0f",
|
|
aPresShell, aTime);
|
|
break;
|
|
default:
|
|
MOZ_ASSERT(aLogType == eLog_totals, "unknown textperf log type");
|
|
SprintfLiteral(prefix, "(textperf-totals) %p", aPresShell);
|
|
}
|
|
|
|
double hitRatio = 0.0;
|
|
uint32_t lookups = aCounts.wordCacheHit + aCounts.wordCacheMiss;
|
|
if (lookups) {
|
|
hitRatio = double(aCounts.wordCacheHit) / double(lookups);
|
|
}
|
|
|
|
if (aLogType == eLog_loaddone) {
|
|
MOZ_LOG(
|
|
tpLog, logLevel,
|
|
("%s reflow: %d chars: %d "
|
|
"[%s] "
|
|
"content-textruns: %d chrome-textruns: %d "
|
|
"max-textrun-len: %d "
|
|
"word-cache-lookups: %d word-cache-hit-ratio: %4.3f "
|
|
"word-cache-space: %d word-cache-long: %d "
|
|
"pref-fallbacks: %d system-fallbacks: %d "
|
|
"textruns-const: %d textruns-destr: %d "
|
|
"generic-lookups: %d "
|
|
"cumulative-textruns-destr: %d\n",
|
|
prefix, aTextPerf->reflowCount, aCounts.numChars, (aURL ? aURL : ""),
|
|
aCounts.numContentTextRuns, aCounts.numChromeTextRuns,
|
|
aCounts.maxTextRunLen, lookups, hitRatio, aCounts.wordCacheSpaceRules,
|
|
aCounts.wordCacheLong, aCounts.fallbackPrefs, aCounts.fallbackSystem,
|
|
aCounts.textrunConst, aCounts.textrunDestr, aCounts.genericLookups,
|
|
aTextPerf->cumulative.textrunDestr));
|
|
} else {
|
|
MOZ_LOG(
|
|
tpLog, logLevel,
|
|
("%s reflow: %d chars: %d "
|
|
"content-textruns: %d chrome-textruns: %d "
|
|
"max-textrun-len: %d "
|
|
"word-cache-lookups: %d word-cache-hit-ratio: %4.3f "
|
|
"word-cache-space: %d word-cache-long: %d "
|
|
"pref-fallbacks: %d system-fallbacks: %d "
|
|
"textruns-const: %d textruns-destr: %d "
|
|
"generic-lookups: %d "
|
|
"cumulative-textruns-destr: %d\n",
|
|
prefix, aTextPerf->reflowCount, aCounts.numChars,
|
|
aCounts.numContentTextRuns, aCounts.numChromeTextRuns,
|
|
aCounts.maxTextRunLen, lookups, hitRatio, aCounts.wordCacheSpaceRules,
|
|
aCounts.wordCacheLong, aCounts.fallbackPrefs, aCounts.fallbackSystem,
|
|
aCounts.textrunConst, aCounts.textrunDestr, aCounts.genericLookups,
|
|
aTextPerf->cumulative.textrunDestr));
|
|
}
|
|
}
|
|
|
|
void PresShell::Destroy() {
|
|
// Do not add code before this line please!
|
|
if (mHaveShutDown) {
|
|
return;
|
|
}
|
|
|
|
NS_ASSERTION(!nsContentUtils::IsSafeToRunScript(),
|
|
"destroy called on presshell while scripts not blocked");
|
|
|
|
AUTO_PROFILER_LABEL("PresShell::Destroy", LAYOUT);
|
|
|
|
// dump out cumulative text perf metrics
|
|
gfxTextPerfMetrics* tp;
|
|
if (mPresContext && (tp = mPresContext->GetTextPerfMetrics())) {
|
|
tp->Accumulate();
|
|
if (tp->cumulative.numChars > 0) {
|
|
LogTextPerfStats(tp, this, tp->cumulative, 0.0, eLog_totals, nullptr);
|
|
}
|
|
}
|
|
if (mPresContext) {
|
|
const bool mayFlushUserFontSet = false;
|
|
gfxUserFontSet* fs = mPresContext->GetUserFontSet(mayFlushUserFontSet);
|
|
if (fs) {
|
|
uint32_t fontCount;
|
|
uint64_t fontSize;
|
|
fs->GetLoadStatistics(fontCount, fontSize);
|
|
Telemetry::Accumulate(Telemetry::WEBFONT_PER_PAGE, fontCount);
|
|
Telemetry::Accumulate(Telemetry::WEBFONT_SIZE_PER_PAGE,
|
|
uint32_t(fontSize / 1024));
|
|
} else {
|
|
Telemetry::Accumulate(Telemetry::WEBFONT_PER_PAGE, 0);
|
|
Telemetry::Accumulate(Telemetry::WEBFONT_SIZE_PER_PAGE, 0);
|
|
}
|
|
}
|
|
|
|
#ifdef MOZ_REFLOW_PERF
|
|
DumpReflows();
|
|
mReflowCountMgr = nullptr;
|
|
#endif
|
|
|
|
if (mZoomConstraintsClient) {
|
|
mZoomConstraintsClient->Destroy();
|
|
mZoomConstraintsClient = nullptr;
|
|
}
|
|
if (mMobileViewportManager) {
|
|
mMobileViewportManager->Destroy();
|
|
mMobileViewportManager = nullptr;
|
|
}
|
|
|
|
#ifdef ACCESSIBILITY
|
|
if (mDocAccessible) {
|
|
#ifdef DEBUG
|
|
if (a11y::logging::IsEnabled(a11y::logging::eDocDestroy))
|
|
a11y::logging::DocDestroy("presshell destroyed", mDocument);
|
|
#endif
|
|
|
|
mDocAccessible->Shutdown();
|
|
mDocAccessible = nullptr;
|
|
}
|
|
#endif // ACCESSIBILITY
|
|
|
|
MaybeReleaseCapturingContent();
|
|
|
|
if (gKeyDownTarget && gKeyDownTarget->OwnerDoc() == mDocument) {
|
|
NS_RELEASE(gKeyDownTarget);
|
|
}
|
|
|
|
if (mContentToScrollTo) {
|
|
mContentToScrollTo->DeleteProperty(nsGkAtoms::scrolling);
|
|
mContentToScrollTo = nullptr;
|
|
}
|
|
|
|
if (mPresContext) {
|
|
// We need to notify the destroying the nsPresContext to ESM for
|
|
// suppressing to use from ESM.
|
|
mPresContext->EventStateManager()->NotifyDestroyPresContext(mPresContext);
|
|
}
|
|
|
|
if (nsStyleSheetService* ss = nsStyleSheetService::GetInstance()) {
|
|
ss->UnregisterPresShell(this);
|
|
}
|
|
|
|
{
|
|
nsCOMPtr<nsIObserverService> os = mozilla::services::GetObserverService();
|
|
if (os) {
|
|
#ifdef MOZ_XUL
|
|
os->RemoveObserver(this, "chrome-flush-skin-caches");
|
|
#endif
|
|
os->RemoveObserver(this, "memory-pressure");
|
|
os->RemoveObserver(this, NS_WIDGET_WAKE_OBSERVER_TOPIC);
|
|
if (XRE_IsParentProcess()) {
|
|
os->RemoveObserver(this, "sessionstore-one-or-no-tab-restored");
|
|
}
|
|
os->RemoveObserver(this, "font-info-updated");
|
|
}
|
|
}
|
|
|
|
// If our paint suppression timer is still active, kill it.
|
|
if (mPaintSuppressionTimer) {
|
|
mPaintSuppressionTimer->Cancel();
|
|
mPaintSuppressionTimer = nullptr;
|
|
}
|
|
|
|
// Same for our reflow continuation timer
|
|
if (mReflowContinueTimer) {
|
|
mReflowContinueTimer->Cancel();
|
|
mReflowContinueTimer = nullptr;
|
|
}
|
|
|
|
if (mDelayedPaintTimer) {
|
|
mDelayedPaintTimer->Cancel();
|
|
mDelayedPaintTimer = nullptr;
|
|
}
|
|
|
|
mSynthMouseMoveEvent.Revoke();
|
|
|
|
mUpdateApproximateFrameVisibilityEvent.Revoke();
|
|
|
|
ClearApproximatelyVisibleFramesList(Some(OnNonvisible::DISCARD_IMAGES));
|
|
|
|
if (mCaret) {
|
|
mCaret->Terminate();
|
|
mCaret = nullptr;
|
|
}
|
|
|
|
if (mSelection) {
|
|
RefPtr<nsFrameSelection> frameSelection = mSelection;
|
|
frameSelection->DisconnectFromPresShell();
|
|
}
|
|
|
|
if (mAccessibleCaretEventHub) {
|
|
mAccessibleCaretEventHub->Terminate();
|
|
mAccessibleCaretEventHub = nullptr;
|
|
}
|
|
|
|
// release our pref style sheet, if we have one still
|
|
//
|
|
// FIXME(emilio): Why do we need to do this? The stylist is getting nixed with
|
|
// us anyway.
|
|
RemovePreferenceStyles();
|
|
|
|
mIsDestroying = true;
|
|
|
|
// We can't release all the event content in
|
|
// mCurrentEventContentStack here since there might be code on the
|
|
// stack that will release the event content too. Double release
|
|
// bad!
|
|
|
|
// The frames will be torn down, so remove them from the current
|
|
// event frame stack (since they'd be dangling references if we'd
|
|
// leave them in) and null out the mCurrentEventFrame pointer as
|
|
// well.
|
|
|
|
mCurrentEventFrame = nullptr;
|
|
|
|
int32_t i, count = mCurrentEventFrameStack.Length();
|
|
for (i = 0; i < count; i++) {
|
|
mCurrentEventFrameStack[i] = nullptr;
|
|
}
|
|
|
|
mFramesToDirty.Clear();
|
|
|
|
if (mViewManager) {
|
|
// Clear the view manager's weak pointer back to |this| in case it
|
|
// was leaked.
|
|
mViewManager->SetPresShell(nullptr);
|
|
mViewManager = nullptr;
|
|
}
|
|
|
|
// mFrameArena will be destroyed soon. Clear out any ArenaRefPtrs
|
|
// pointing to objects in the arena now. This is done:
|
|
//
|
|
// (a) before mFrameArena's destructor runs so that our
|
|
// mAllocatedPointers becomes empty and doesn't trip the assertion
|
|
// in ~PresShell,
|
|
// (b) before the mPresContext->DetachShell() below, so
|
|
// that when we clear the ArenaRefPtrs they'll still be able to
|
|
// get back to this PresShell to deregister themselves (e.g. note
|
|
// how ComputedStyle::Arena returns the PresShell got from its
|
|
// rule node's nsPresContext, which would return null if we'd already
|
|
// called mPresContext->DetachShell()), and
|
|
// (c) before the mStyleSet->BeginShutdown() call just below, so that
|
|
// the ComputedStyles don't complain they're being destroyed later
|
|
// than the rule tree is.
|
|
mFrameArena.ClearArenaRefPtrs();
|
|
|
|
mStyleSet->BeginShutdown();
|
|
nsRefreshDriver* rd = GetPresContext()->RefreshDriver();
|
|
|
|
// This shell must be removed from the document before the frame
|
|
// hierarchy is torn down to avoid finding deleted frames through
|
|
// this presshell while the frames are being torn down
|
|
if (mDocument) {
|
|
NS_ASSERTION(mDocument->GetShell() == this, "Wrong shell?");
|
|
mDocument->ClearServoRestyleRoot();
|
|
mDocument->DeleteShell();
|
|
|
|
if (mDocument->HasAnimationController()) {
|
|
mDocument->GetAnimationController()->NotifyRefreshDriverDestroying(rd);
|
|
}
|
|
for (DocumentTimeline* timeline : mDocument->Timelines()) {
|
|
timeline->NotifyRefreshDriverDestroying(rd);
|
|
}
|
|
}
|
|
|
|
if (mPresContext) {
|
|
rd->CancelPendingAnimationEvents(mPresContext->AnimationEventDispatcher());
|
|
}
|
|
|
|
// Revoke any pending events. We need to do this and cancel pending reflows
|
|
// before we destroy the frame manager, since apparently frame destruction
|
|
// sometimes spins the event queue when plug-ins are involved(!).
|
|
StopObservingRefreshDriver();
|
|
|
|
if (rd->GetPresContext() == GetPresContext()) {
|
|
rd->RevokeViewManagerFlush();
|
|
}
|
|
|
|
CancelAllPendingReflows();
|
|
CancelPostedReflowCallbacks();
|
|
|
|
// Destroy the frame manager. This will destroy the frame hierarchy
|
|
mFrameConstructor->WillDestroyFrameTree();
|
|
|
|
NS_WARNING_ASSERTION(!mAutoWeakFrames && mWeakFrames.IsEmpty(),
|
|
"Weak frames alive after destroying FrameManager");
|
|
while (mAutoWeakFrames) {
|
|
mAutoWeakFrames->Clear(this);
|
|
}
|
|
nsTArray<WeakFrame*> toRemove(mWeakFrames.Count());
|
|
for (auto iter = mWeakFrames.Iter(); !iter.Done(); iter.Next()) {
|
|
toRemove.AppendElement(iter.Get()->GetKey());
|
|
}
|
|
for (WeakFrame* weakFrame : toRemove) {
|
|
weakFrame->Clear(this);
|
|
}
|
|
|
|
// Let the style set do its cleanup.
|
|
mStyleSet->Shutdown();
|
|
|
|
if (mPresContext) {
|
|
// We hold a reference to the pres context, and it holds a weak link back
|
|
// to us. To avoid the pres context having a dangling reference, set its
|
|
// pres shell to nullptr
|
|
mPresContext->DetachShell();
|
|
|
|
// Clear the link handler (weak reference) as well
|
|
mPresContext->SetLinkHandler(nullptr);
|
|
}
|
|
|
|
mHaveShutDown = true;
|
|
|
|
mTouchManager.Destroy();
|
|
}
|
|
|
|
void nsIPresShell::StopObservingRefreshDriver() {
|
|
nsRefreshDriver* rd = mPresContext->RefreshDriver();
|
|
if (mResizeEventPending) {
|
|
rd->RemoveResizeEventFlushObserver(this);
|
|
}
|
|
if (mObservingLayoutFlushes) {
|
|
rd->RemoveLayoutFlushObserver(this);
|
|
}
|
|
if (mObservingStyleFlushes) {
|
|
rd->RemoveStyleFlushObserver(this);
|
|
}
|
|
}
|
|
|
|
void nsIPresShell::StartObservingRefreshDriver() {
|
|
nsRefreshDriver* rd = mPresContext->RefreshDriver();
|
|
if (mResizeEventPending) {
|
|
rd->AddResizeEventFlushObserver(this);
|
|
}
|
|
if (mObservingLayoutFlushes) {
|
|
rd->AddLayoutFlushObserver(this);
|
|
}
|
|
if (mObservingStyleFlushes) {
|
|
rd->AddStyleFlushObserver(this);
|
|
}
|
|
}
|
|
|
|
nsRefreshDriver* nsIPresShell::GetRefreshDriver() const {
|
|
return mPresContext ? mPresContext->RefreshDriver() : nullptr;
|
|
}
|
|
|
|
void nsIPresShell::SetAuthorStyleDisabled(bool aStyleDisabled) {
|
|
if (aStyleDisabled != mStyleSet->GetAuthorStyleDisabled()) {
|
|
mStyleSet->SetAuthorStyleDisabled(aStyleDisabled);
|
|
ApplicableStylesChanged();
|
|
|
|
nsCOMPtr<nsIObserverService> observerService =
|
|
mozilla::services::GetObserverService();
|
|
if (observerService) {
|
|
observerService->NotifyObservers(
|
|
mDocument, "author-style-disabled-changed", nullptr);
|
|
}
|
|
}
|
|
}
|
|
|
|
bool nsIPresShell::GetAuthorStyleDisabled() const {
|
|
return mStyleSet->GetAuthorStyleDisabled();
|
|
}
|
|
|
|
void PresShell::UpdatePreferenceStyles() {
|
|
if (!mDocument) {
|
|
return;
|
|
}
|
|
|
|
// If the document doesn't have a window there's no need to notify
|
|
// its presshell about changes to preferences since the document is
|
|
// in a state where it doesn't matter any more (see
|
|
// nsDocumentViewer::Close()).
|
|
if (!mDocument->GetWindow()) {
|
|
return;
|
|
}
|
|
|
|
// Documents in chrome shells do not have any preference style rules applied.
|
|
if (nsContentUtils::IsInChromeDocshell(mDocument)) {
|
|
return;
|
|
}
|
|
|
|
// We need to pass in mPresContext so that if the nsLayoutStylesheetCache
|
|
// needs to recreate the pref style sheet, it has somewhere to get the
|
|
// pref styling information from. All pres contexts for
|
|
// IsChromeOriginImage() == false will have the same pref styling information,
|
|
// and similarly for IsChromeOriginImage() == true, so it doesn't really
|
|
// matter which pres context we pass in when it does need to be recreated.
|
|
// (See nsPresContext::GetDocumentColorPreferences for how whether we
|
|
// are a chrome origin image affects some pref styling information.)
|
|
auto cache = nsLayoutStylesheetCache::Singleton();
|
|
RefPtr<StyleSheet> newPrefSheet =
|
|
mPresContext->IsChromeOriginImage()
|
|
? cache->ChromePreferenceSheet(mPresContext)
|
|
: cache->ContentPreferenceSheet(mPresContext);
|
|
|
|
if (mPrefStyleSheet == newPrefSheet) {
|
|
return;
|
|
}
|
|
|
|
RemovePreferenceStyles();
|
|
|
|
// NOTE(emilio): This sheet is added as an agent sheet, because we don't want
|
|
// it to be modifiable from devtools and similar, see bugs 1239336 and
|
|
// 1436782. I think it conceptually should be a user sheet, and could be
|
|
// without too much trouble I'd think.
|
|
mStyleSet->AppendStyleSheet(SheetType::Agent, newPrefSheet);
|
|
mPrefStyleSheet = newPrefSheet;
|
|
}
|
|
|
|
void PresShell::RemovePreferenceStyles() {
|
|
if (mPrefStyleSheet) {
|
|
mStyleSet->RemoveStyleSheet(SheetType::Agent, mPrefStyleSheet);
|
|
mPrefStyleSheet = nullptr;
|
|
}
|
|
}
|
|
|
|
void PresShell::AddUserSheet(StyleSheet* aSheet) {
|
|
// Make sure this does what nsDocumentViewer::CreateStyleSet does wrt
|
|
// ordering. We want this new sheet to come after all the existing stylesheet
|
|
// service sheets, but before other user sheets; see nsIStyleSheetService.idl
|
|
// for the ordering. Just remove and readd all the nsStyleSheetService
|
|
// sheets.
|
|
nsCOMPtr<nsIStyleSheetService> dummy =
|
|
do_GetService(NS_STYLESHEETSERVICE_CONTRACTID);
|
|
|
|
nsStyleSheetService* sheetService = nsStyleSheetService::gInstance;
|
|
nsTArray<RefPtr<StyleSheet>>& userSheets = *sheetService->UserStyleSheets();
|
|
// Iterate forwards when removing so the searches for RemoveStyleSheet are as
|
|
// short as possible.
|
|
for (StyleSheet* sheet : userSheets) {
|
|
mStyleSet->RemoveStyleSheet(SheetType::User, sheet);
|
|
}
|
|
|
|
// Now iterate backwards, so that the order of userSheets will be the same as
|
|
// the order of sheets from it in the style set.
|
|
for (StyleSheet* sheet : Reversed(userSheets)) {
|
|
mStyleSet->PrependStyleSheet(SheetType::User, sheet);
|
|
}
|
|
|
|
ApplicableStylesChanged();
|
|
}
|
|
|
|
void PresShell::AddAgentSheet(StyleSheet* aSheet) {
|
|
// Make sure this does what nsDocumentViewer::CreateStyleSet does
|
|
// wrt ordering.
|
|
mStyleSet->AppendStyleSheet(SheetType::Agent, aSheet);
|
|
ApplicableStylesChanged();
|
|
}
|
|
|
|
void PresShell::AddAuthorSheet(StyleSheet* aSheet) {
|
|
// Document specific "additional" Author sheets should be stronger than the
|
|
// ones added with the StyleSheetService.
|
|
StyleSheet* firstAuthorSheet = mDocument->GetFirstAdditionalAuthorSheet();
|
|
if (firstAuthorSheet) {
|
|
mStyleSet->InsertStyleSheetBefore(SheetType::Doc, aSheet, firstAuthorSheet);
|
|
} else {
|
|
mStyleSet->AppendStyleSheet(SheetType::Doc, aSheet);
|
|
}
|
|
|
|
ApplicableStylesChanged();
|
|
}
|
|
|
|
void PresShell::RemoveSheet(SheetType aType, StyleSheet* aSheet) {
|
|
mStyleSet->RemoveStyleSheet(aType, aSheet);
|
|
ApplicableStylesChanged();
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::SetDisplaySelection(int16_t aToggle) {
|
|
RefPtr<nsFrameSelection> frameSelection = mSelection;
|
|
frameSelection->SetDisplaySelection(aToggle);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::GetDisplaySelection(int16_t* aToggle) {
|
|
RefPtr<nsFrameSelection> frameSelection = mSelection;
|
|
*aToggle = frameSelection->GetDisplaySelection();
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::GetSelectionFromScript(RawSelectionType aRawSelectionType,
|
|
Selection** aSelection) {
|
|
if (!aSelection || !mSelection) return NS_ERROR_NULL_POINTER;
|
|
|
|
RefPtr<nsFrameSelection> frameSelection = mSelection;
|
|
RefPtr<Selection> selection =
|
|
frameSelection->GetSelection(ToSelectionType(aRawSelectionType));
|
|
|
|
if (!selection) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
selection.forget(aSelection);
|
|
return NS_OK;
|
|
}
|
|
|
|
Selection* PresShell::GetSelection(RawSelectionType aRawSelectionType) {
|
|
if (!mSelection) {
|
|
return nullptr;
|
|
}
|
|
|
|
RefPtr<nsFrameSelection> frameSelection = mSelection;
|
|
return frameSelection->GetSelection(ToSelectionType(aRawSelectionType));
|
|
}
|
|
|
|
Selection* PresShell::GetCurrentSelection(SelectionType aSelectionType) {
|
|
if (!mSelection) return nullptr;
|
|
|
|
RefPtr<nsFrameSelection> frameSelection = mSelection;
|
|
return frameSelection->GetSelection(aSelectionType);
|
|
}
|
|
|
|
already_AddRefed<nsISelectionController>
|
|
PresShell::GetSelectionControllerForFocusedContent(
|
|
nsIContent** aFocusedContent) {
|
|
if (aFocusedContent) {
|
|
*aFocusedContent = nullptr;
|
|
}
|
|
|
|
if (mDocument) {
|
|
nsCOMPtr<nsPIDOMWindowOuter> focusedWindow;
|
|
nsCOMPtr<nsIContent> focusedContent = nsFocusManager::GetFocusedDescendant(
|
|
mDocument->GetWindow(), nsFocusManager::eOnlyCurrentWindow,
|
|
getter_AddRefs(focusedWindow));
|
|
if (focusedContent) {
|
|
nsIFrame* frame = focusedContent->GetPrimaryFrame();
|
|
if (frame) {
|
|
nsCOMPtr<nsISelectionController> selectionController;
|
|
frame->GetSelectionController(mPresContext,
|
|
getter_AddRefs(selectionController));
|
|
if (selectionController) {
|
|
if (aFocusedContent) {
|
|
focusedContent.forget(aFocusedContent);
|
|
}
|
|
return selectionController.forget();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
nsCOMPtr<nsISelectionController> self(this);
|
|
return self.forget();
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::ScrollSelectionIntoView(RawSelectionType aRawSelectionType,
|
|
SelectionRegion aRegion, int16_t aFlags) {
|
|
if (!mSelection) return NS_ERROR_NULL_POINTER;
|
|
|
|
RefPtr<nsFrameSelection> frameSelection = mSelection;
|
|
return frameSelection->ScrollSelectionIntoView(
|
|
ToSelectionType(aRawSelectionType), aRegion, aFlags);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::RepaintSelection(RawSelectionType aRawSelectionType) {
|
|
if (!mSelection) {
|
|
return NS_ERROR_NULL_POINTER;
|
|
}
|
|
|
|
if (MOZ_UNLIKELY(mIsDestroying)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
RefPtr<nsFrameSelection> frameSelection = mSelection;
|
|
return frameSelection->RepaintSelection(ToSelectionType(aRawSelectionType));
|
|
}
|
|
|
|
// Make shell be a document observer
|
|
void nsIPresShell::BeginObservingDocument() {
|
|
if (mDocument && !mIsDestroying) {
|
|
mIsObservingDocument = true;
|
|
if (mIsDocumentGone) {
|
|
NS_WARNING(
|
|
"Adding a presshell that was disconnected from the document "
|
|
"as a document observer? Sounds wrong...");
|
|
mIsDocumentGone = false;
|
|
}
|
|
}
|
|
}
|
|
|
|
// Make shell stop being a document observer
|
|
void nsIPresShell::EndObservingDocument() {
|
|
// XXXbz do we need to tell the frame constructor that the document
|
|
// is gone, perhaps? Except for printing it's NOT gone, sometimes.
|
|
mIsDocumentGone = true;
|
|
mIsObservingDocument = false;
|
|
}
|
|
|
|
#ifdef DEBUG_kipp
|
|
char* nsPresShell_ReflowStackPointerTop;
|
|
#endif
|
|
|
|
class XBLConstructorRunner : public Runnable {
|
|
public:
|
|
explicit XBLConstructorRunner(nsIDocument* aDocument)
|
|
: Runnable("XBLConstructorRunner"), mDocument(aDocument) {}
|
|
|
|
NS_IMETHOD Run() override {
|
|
mDocument->BindingManager()->ProcessAttachedQueue();
|
|
return NS_OK;
|
|
}
|
|
|
|
private:
|
|
nsCOMPtr<nsIDocument> mDocument;
|
|
};
|
|
|
|
nsresult PresShell::Initialize() {
|
|
if (mIsDestroying) {
|
|
return NS_OK;
|
|
}
|
|
|
|
if (!mDocument) {
|
|
// Nothing to do
|
|
return NS_OK;
|
|
}
|
|
|
|
MOZ_LOG(gLog, LogLevel::Debug, ("PresShell::Initialize this=%p", this));
|
|
|
|
NS_ASSERTION(!mDidInitialize, "Why are we being called?");
|
|
|
|
nsCOMPtr<nsIPresShell> kungFuDeathGrip(this);
|
|
|
|
RecomputeFontSizeInflationEnabled();
|
|
MOZ_DIAGNOSTIC_ASSERT(!mIsDestroying);
|
|
|
|
// Ensure the pres context doesn't think it has changed, since we haven't even
|
|
// started layout. This avoids spurious restyles / reflows afterwards.
|
|
//
|
|
// Note that this is very intentionally before setting mDidInitialize so it
|
|
// doesn't notify the document, or run media query change events.
|
|
mPresContext->FlushPendingMediaFeatureValuesChanged();
|
|
MOZ_DIAGNOSTIC_ASSERT(!mIsDestroying);
|
|
|
|
mDidInitialize = true;
|
|
|
|
#ifdef DEBUG
|
|
if (VERIFY_REFLOW_NOISY_RC & gVerifyReflowFlags) {
|
|
if (mDocument) {
|
|
nsIURI* uri = mDocument->GetDocumentURI();
|
|
if (uri) {
|
|
printf("*** PresShell::Initialize (this=%p, url='%s')\n", (void*)this,
|
|
uri->GetSpecOrDefault().get());
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
// Get the root frame from the frame manager
|
|
// XXXbz it would be nice to move this somewhere else... like frame manager
|
|
// Init(), say. But we need to make sure our views are all set up by the
|
|
// time we do this!
|
|
nsIFrame* rootFrame = mFrameConstructor->GetRootFrame();
|
|
NS_ASSERTION(!rootFrame, "How did that happen, exactly?");
|
|
|
|
if (!rootFrame) {
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
rootFrame = mFrameConstructor->ConstructRootFrame();
|
|
mFrameConstructor->SetRootFrame(rootFrame);
|
|
}
|
|
|
|
NS_ENSURE_STATE(!mHaveShutDown);
|
|
|
|
if (!rootFrame) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
if (Element* root = mDocument->GetRootElement()) {
|
|
{
|
|
nsAutoCauseReflowNotifier reflowNotifier(this);
|
|
// Have the style sheet processor construct frame for the root
|
|
// content object down
|
|
mFrameConstructor->ContentInserted(
|
|
root, nullptr, nsCSSFrameConstructor::InsertionKind::Sync);
|
|
|
|
// Something in mFrameConstructor->ContentInserted may have caused
|
|
// Destroy() to get called, bug 337586.
|
|
NS_ENSURE_STATE(!mHaveShutDown);
|
|
}
|
|
|
|
// nsAutoCauseReflowNotifier (which sets up a script blocker) going out of
|
|
// scope may have killed us too
|
|
NS_ENSURE_STATE(!mHaveShutDown);
|
|
|
|
// Run the XBL binding constructors for any new frames we've constructed.
|
|
// (Do this in a script runner, since our caller might have a script
|
|
// blocker on the stack.)
|
|
nsContentUtils::AddScriptRunner(new XBLConstructorRunner(mDocument));
|
|
|
|
// XBLConstructorRunner might destroy us.
|
|
NS_ENSURE_STATE(!mHaveShutDown);
|
|
}
|
|
|
|
mDocument->TriggerAutoFocus();
|
|
|
|
NS_ASSERTION(rootFrame, "How did that happen?");
|
|
|
|
// Note: when the frame was created above it had the NS_FRAME_IS_DIRTY bit
|
|
// set, but XBL processing could have caused a reflow which clears it.
|
|
if (MOZ_LIKELY(rootFrame->GetStateBits() & NS_FRAME_IS_DIRTY)) {
|
|
// Unset the DIRTY bits so that FrameNeedsReflow() will work right.
|
|
rootFrame->RemoveStateBits(NS_FRAME_IS_DIRTY | NS_FRAME_HAS_DIRTY_CHILDREN);
|
|
NS_ASSERTION(!mDirtyRoots.Contains(rootFrame),
|
|
"Why is the root in mDirtyRoots already?");
|
|
FrameNeedsReflow(rootFrame, nsIPresShell::eResize, NS_FRAME_IS_DIRTY);
|
|
NS_ASSERTION(mDirtyRoots.Contains(rootFrame),
|
|
"Should be in mDirtyRoots now");
|
|
NS_ASSERTION(mObservingLayoutFlushes, "Why no reflow scheduled?");
|
|
}
|
|
|
|
// Restore our root scroll position now if we're getting here after EndLoad
|
|
// got called, since this is our one chance to do it. Note that we need not
|
|
// have reflowed for this to work; when the scrollframe is finally reflowed
|
|
// it'll pick up the position we store in it here.
|
|
if (!mDocumentLoading) {
|
|
RestoreRootScrollPosition();
|
|
}
|
|
|
|
// For printing, we just immediately unsuppress.
|
|
if (!mPresContext->IsPaginated()) {
|
|
// Kick off a one-shot timer based off our pref value. When this timer
|
|
// fires, if painting is still locked down, then we will go ahead and
|
|
// trigger a full invalidate and allow painting to proceed normally.
|
|
mPaintingSuppressed = true;
|
|
// Don't suppress painting if the document isn't loading.
|
|
nsIDocument::ReadyState readyState = mDocument->GetReadyStateEnum();
|
|
if (readyState != nsIDocument::READYSTATE_COMPLETE) {
|
|
mPaintSuppressionTimer = NS_NewTimer();
|
|
}
|
|
if (!mPaintSuppressionTimer) {
|
|
mPaintingSuppressed = false;
|
|
} else {
|
|
// Initialize the timer.
|
|
|
|
// Default to PAINTLOCK_EVENT_DELAY if we can't get the pref value.
|
|
int32_t delay = Preferences::GetInt("nglayout.initialpaint.delay",
|
|
PAINTLOCK_EVENT_DELAY);
|
|
|
|
mPaintSuppressionTimer->SetTarget(
|
|
mDocument->EventTargetFor(TaskCategory::Other));
|
|
mPaintSuppressionTimer->InitWithNamedFuncCallback(
|
|
sPaintSuppressionCallback, this, delay, nsITimer::TYPE_ONE_SHOT,
|
|
"PresShell::sPaintSuppressionCallback");
|
|
}
|
|
}
|
|
|
|
// If we get here and painting is not suppressed, then we can paint anytime
|
|
// and we should fire the before-first-paint notification
|
|
if (!mPaintingSuppressed) {
|
|
ScheduleBeforeFirstPaint();
|
|
}
|
|
|
|
return NS_OK; // XXX this needs to be real. MMP
|
|
}
|
|
|
|
void PresShell::sPaintSuppressionCallback(nsITimer* aTimer, void* aPresShell) {
|
|
RefPtr<PresShell> self = static_cast<PresShell*>(aPresShell);
|
|
if (self) self->UnsuppressPainting();
|
|
}
|
|
|
|
nsresult PresShell::ResizeReflow(nscoord aWidth, nscoord aHeight,
|
|
nscoord aOldWidth, nscoord aOldHeight,
|
|
ResizeReflowOptions aOptions) {
|
|
if (mZoomConstraintsClient) {
|
|
// If we have a ZoomConstraintsClient and the available screen area
|
|
// changed, then we might need to disable double-tap-to-zoom, so notify
|
|
// the ZCC to update itself.
|
|
mZoomConstraintsClient->ScreenSizeChanged();
|
|
}
|
|
if (mMobileViewportManager) {
|
|
// If we have a mobile viewport manager, request a reflow from it. It can
|
|
// recompute the final CSS viewport and trigger a call to
|
|
// ResizeReflowIgnoreOverride if it changed.
|
|
mMobileViewportManager->RequestReflow();
|
|
return NS_OK;
|
|
}
|
|
|
|
return ResizeReflowIgnoreOverride(aWidth, aHeight, aOldWidth, aOldHeight,
|
|
aOptions);
|
|
}
|
|
|
|
nsresult PresShell::ResizeReflowIgnoreOverride(nscoord aWidth, nscoord aHeight,
|
|
nscoord aOldWidth,
|
|
nscoord aOldHeight,
|
|
ResizeReflowOptions aOptions) {
|
|
MOZ_ASSERT(!mIsReflowing, "Shouldn't be in reflow here!");
|
|
|
|
nsIFrame* rootFrame = mFrameConstructor->GetRootFrame();
|
|
if (!rootFrame) {
|
|
// If we don't have a root frame yet, that means we haven't had our initial
|
|
// reflow... If that's the case, and aWidth or aHeight is unconstrained,
|
|
// ignore them altogether.
|
|
if (aHeight == NS_UNCONSTRAINEDSIZE || aWidth == NS_UNCONSTRAINEDSIZE) {
|
|
// We can't do the work needed for SizeToContent without a root
|
|
// frame, and we want to return before setting the visible area.
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
}
|
|
|
|
mPresContext->SetVisibleArea(nsRect(0, 0, aWidth, aHeight));
|
|
// There isn't anything useful we can do if the initial reflow hasn't
|
|
// happened.
|
|
return NS_OK;
|
|
}
|
|
|
|
WritingMode wm = rootFrame->GetWritingMode();
|
|
const bool shrinkToFit = aOptions == ResizeReflowOptions::eBSizeLimit;
|
|
MOZ_ASSERT(shrinkToFit ||
|
|
(wm.IsVertical() ? aWidth : aHeight) != NS_UNCONSTRAINEDSIZE,
|
|
"unconstrained bsize only usable with eBSizeLimit");
|
|
MOZ_ASSERT((wm.IsVertical() ? aHeight : aWidth) != NS_UNCONSTRAINEDSIZE,
|
|
"unconstrained isize not allowed");
|
|
bool isBSizeChanging =
|
|
wm.IsVertical() ? aOldWidth != aWidth : aOldHeight != aHeight;
|
|
nscoord targetWidth = aWidth;
|
|
nscoord targetHeight = aHeight;
|
|
|
|
if (shrinkToFit) {
|
|
if (wm.IsVertical()) {
|
|
targetWidth = NS_UNCONSTRAINEDSIZE;
|
|
} else {
|
|
targetHeight = NS_UNCONSTRAINEDSIZE;
|
|
}
|
|
isBSizeChanging = true;
|
|
}
|
|
|
|
const bool suppressingResizeReflow =
|
|
GetPresContext()->SuppressingResizeReflow();
|
|
|
|
RefPtr<nsViewManager> viewManager = mViewManager;
|
|
nsCOMPtr<nsIPresShell> kungFuDeathGrip(this);
|
|
|
|
if (!suppressingResizeReflow && shrinkToFit) {
|
|
// Make sure that style is flushed before setting the pres context
|
|
// VisibleArea if we're shrinking to fit.
|
|
//
|
|
// Otherwise we may end up with bogus viewport units resolved against the
|
|
// unconstrained bsize, or restyling the whole document resolving viewport
|
|
// units against targetWidth, which may end up doing wasteful work.
|
|
mDocument->FlushPendingNotifications(FlushType::Frames);
|
|
}
|
|
|
|
if (!mIsDestroying) {
|
|
mPresContext->SetVisibleArea(nsRect(0, 0, targetWidth, targetHeight));
|
|
}
|
|
|
|
if (!mIsDestroying && !suppressingResizeReflow) {
|
|
if (!shrinkToFit) {
|
|
// Flush styles _now_ (with the correct visible area) if not computing the
|
|
// shrink-to-fit size.
|
|
//
|
|
// We've asserted above that sizes are not unconstrained, so this is going
|
|
// to be the final size, which means that we'll get the (correct) final
|
|
// styles now, and avoid a further potentially-wasteful full recascade on
|
|
// the next flush.
|
|
mDocument->FlushPendingNotifications(FlushType::Frames);
|
|
}
|
|
|
|
rootFrame = mFrameConstructor->GetRootFrame();
|
|
if (!mIsDestroying && rootFrame) {
|
|
// XXX Do a full invalidate at the beginning so that invalidates along
|
|
// the way don't have region accumulation issues?
|
|
|
|
if (isBSizeChanging) {
|
|
// For BSize changes driven by style, RestyleManager handles this.
|
|
// For height:auto BSizes (i.e. layout-controlled), descendant
|
|
// intrinsic sizes can't depend on them. So the only other case is
|
|
// viewport-controlled BSizes which we handle here.
|
|
nsLayoutUtils::MarkIntrinsicISizesDirtyIfDependentOnBSize(rootFrame);
|
|
}
|
|
|
|
{
|
|
nsAutoCauseReflowNotifier crNotifier(this);
|
|
WillDoReflow();
|
|
|
|
// Kick off a top-down reflow
|
|
AUTO_LAYOUT_PHASE_ENTRY_POINT(GetPresContext(), Reflow);
|
|
nsViewManager::AutoDisableRefresh refreshBlocker(viewManager);
|
|
|
|
mDirtyRoots.Remove(rootFrame);
|
|
DoReflow(rootFrame, true, nullptr);
|
|
|
|
if (shrinkToFit) {
|
|
const bool reflowAgain =
|
|
wm.IsVertical() ? mPresContext->GetVisibleArea().width > aWidth
|
|
: mPresContext->GetVisibleArea().height > aHeight;
|
|
|
|
if (reflowAgain) {
|
|
mPresContext->SetVisibleArea(nsRect(0, 0, aWidth, aHeight));
|
|
DoReflow(rootFrame, true, nullptr);
|
|
}
|
|
}
|
|
}
|
|
|
|
// the first DoReflow above should've set our bsize if it was
|
|
// NS_UNCONSTRAINEDSIZE, and the isize shouldn't be NS_UNCONSTRAINEDSIZE
|
|
// anyway
|
|
NS_ASSERTION(mPresContext->GetVisibleArea().width != NS_UNCONSTRAINEDSIZE,
|
|
"width should not be NS_UNCONSTRAINEDSIZE after reflow");
|
|
NS_ASSERTION(
|
|
mPresContext->GetVisibleArea().height != NS_UNCONSTRAINEDSIZE,
|
|
"height should not be NS_UNCONSTRAINEDSIZE after reflow");
|
|
|
|
DidDoReflow(true);
|
|
}
|
|
}
|
|
|
|
rootFrame = mFrameConstructor->GetRootFrame();
|
|
if (rootFrame) {
|
|
wm = rootFrame->GetWritingMode();
|
|
// reflow did not happen; if the reflow happened, our bsize should not be
|
|
// NS_UNCONSTRAINEDSIZE because DoReflow will fix it up to the same values
|
|
// as below
|
|
if (wm.IsVertical()) {
|
|
if (mPresContext->GetVisibleArea().width == NS_UNCONSTRAINEDSIZE) {
|
|
mPresContext->SetVisibleArea(
|
|
nsRect(0, 0, rootFrame->GetRect().width, aHeight));
|
|
}
|
|
} else {
|
|
if (mPresContext->GetVisibleArea().height == NS_UNCONSTRAINEDSIZE) {
|
|
mPresContext->SetVisibleArea(
|
|
nsRect(0, 0, aWidth, rootFrame->GetRect().height));
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!mIsDestroying && !mResizeEventPending) {
|
|
mResizeEventPending = true;
|
|
if (MOZ_LIKELY(!mDocument->GetBFCacheEntry())) {
|
|
mPresContext->RefreshDriver()->AddResizeEventFlushObserver(this);
|
|
}
|
|
}
|
|
|
|
return NS_OK; // XXX this needs to be real. MMP
|
|
}
|
|
|
|
void PresShell::FireResizeEvent() {
|
|
if (mIsDocumentGone) {
|
|
return;
|
|
}
|
|
|
|
// If event handling is suppressed, repost the resize event to the refresh
|
|
// driver. The event is marked as delayed so that the refresh driver does not
|
|
// continue ticking.
|
|
if (mDocument->EventHandlingSuppressed()) {
|
|
if (MOZ_LIKELY(!mDocument->GetBFCacheEntry())) {
|
|
mDocument->SetHasDelayedRefreshEvent();
|
|
mPresContext->RefreshDriver()->AddResizeEventFlushObserver(
|
|
this, /* aDelayed = */ true);
|
|
}
|
|
return;
|
|
}
|
|
|
|
mResizeEventPending = false;
|
|
|
|
// Send resize event from here.
|
|
WidgetEvent event(true, mozilla::eResize);
|
|
nsEventStatus status = nsEventStatus_eIgnore;
|
|
|
|
if (nsPIDOMWindowOuter* window = mDocument->GetWindow()) {
|
|
EventDispatcher::Dispatch(window, mPresContext, &event, nullptr, &status);
|
|
}
|
|
}
|
|
|
|
static nsIContent* GetNativeAnonymousSubtreeRoot(nsIContent* aContent) {
|
|
if (!aContent || !aContent->IsInNativeAnonymousSubtree()) {
|
|
return nullptr;
|
|
}
|
|
auto* current = aContent;
|
|
// FIXME(emilio): This should not need to worry about current being null, but
|
|
// editor removes nodes in native anonymous subtrees, and we don't clean nodes
|
|
// from the current event content stack from ContentRemoved, so it can
|
|
// actually happen, see bug 1510208.
|
|
while (current && !current->IsRootOfNativeAnonymousSubtree()) {
|
|
current = current->GetFlattenedTreeParent();
|
|
}
|
|
return current;
|
|
}
|
|
|
|
void nsIPresShell::NativeAnonymousContentRemoved(nsIContent* aAnonContent) {
|
|
MOZ_ASSERT(aAnonContent->IsRootOfNativeAnonymousSubtree());
|
|
if (nsIContent* root = GetNativeAnonymousSubtreeRoot(mCurrentEventContent)) {
|
|
if (aAnonContent == root) {
|
|
mCurrentEventContent = aAnonContent->GetFlattenedTreeParent();
|
|
mCurrentEventFrame = nullptr;
|
|
}
|
|
}
|
|
|
|
for (unsigned int i = 0; i < mCurrentEventContentStack.Length(); i++) {
|
|
nsIContent* anon =
|
|
GetNativeAnonymousSubtreeRoot(mCurrentEventContentStack.ElementAt(i));
|
|
if (aAnonContent == anon) {
|
|
mCurrentEventContentStack.ReplaceObjectAt(
|
|
aAnonContent->GetFlattenedTreeParent(), i);
|
|
mCurrentEventFrameStack[i] = nullptr;
|
|
}
|
|
}
|
|
}
|
|
|
|
void PresShell::SetIgnoreFrameDestruction(bool aIgnore) {
|
|
if (mDocument) {
|
|
// We need to tell the ImageLoader to drop all its references to frames
|
|
// because they're about to go away and it won't get notifications of that.
|
|
mDocument->StyleImageLoader()->ClearFrames(mPresContext);
|
|
}
|
|
mIgnoreFrameDestruction = aIgnore;
|
|
}
|
|
|
|
void PresShell::NotifyDestroyingFrame(nsIFrame* aFrame) {
|
|
// We must remove these from FrameLayerBuilder::DisplayItemData::mFrameList
|
|
// here, otherwise the DisplayItemData destructor will use the destroyed frame
|
|
// when it tries to remove it from the (array) value of this property.
|
|
aFrame->RemoveDisplayItemDataForDeletion();
|
|
|
|
if (!mIgnoreFrameDestruction) {
|
|
if (aFrame->HasImageRequest()) {
|
|
mDocument->StyleImageLoader()->DropRequestsForFrame(aFrame);
|
|
}
|
|
|
|
mFrameConstructor->NotifyDestroyingFrame(aFrame);
|
|
|
|
mDirtyRoots.Remove(aFrame);
|
|
|
|
// Remove frame properties
|
|
aFrame->DeleteAllProperties();
|
|
|
|
if (aFrame == mCurrentEventFrame) {
|
|
mCurrentEventContent = aFrame->GetContent();
|
|
mCurrentEventFrame = nullptr;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
if (aFrame == mDrawEventTargetFrame) {
|
|
mDrawEventTargetFrame = nullptr;
|
|
}
|
|
#endif
|
|
|
|
for (unsigned int i = 0; i < mCurrentEventFrameStack.Length(); i++) {
|
|
if (aFrame == mCurrentEventFrameStack.ElementAt(i)) {
|
|
// One of our stack frames was deleted. Get its content so that when we
|
|
// pop it we can still get its new frame from its content
|
|
nsIContent* currentEventContent = aFrame->GetContent();
|
|
mCurrentEventContentStack.ReplaceObjectAt(currentEventContent, i);
|
|
mCurrentEventFrameStack[i] = nullptr;
|
|
}
|
|
}
|
|
|
|
mFramesToDirty.RemoveEntry(aFrame);
|
|
}
|
|
}
|
|
|
|
already_AddRefed<nsCaret> PresShell::GetCaret() const {
|
|
RefPtr<nsCaret> caret = mCaret;
|
|
return caret.forget();
|
|
}
|
|
|
|
already_AddRefed<AccessibleCaretEventHub>
|
|
PresShell::GetAccessibleCaretEventHub() const {
|
|
RefPtr<AccessibleCaretEventHub> eventHub = mAccessibleCaretEventHub;
|
|
return eventHub.forget();
|
|
}
|
|
|
|
void PresShell::SetCaret(nsCaret* aNewCaret) { mCaret = aNewCaret; }
|
|
|
|
void PresShell::RestoreCaret() { mCaret = mOriginalCaret; }
|
|
|
|
NS_IMETHODIMP PresShell::SetCaretEnabled(bool aInEnable) {
|
|
bool oldEnabled = mCaretEnabled;
|
|
|
|
mCaretEnabled = aInEnable;
|
|
|
|
if (mCaretEnabled != oldEnabled) {
|
|
MOZ_ASSERT(mCaret);
|
|
if (mCaret) {
|
|
mCaret->SetVisible(mCaretEnabled);
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP PresShell::SetCaretReadOnly(bool aReadOnly) {
|
|
if (mCaret) mCaret->SetCaretReadOnly(aReadOnly);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP PresShell::GetCaretEnabled(bool* aOutEnabled) {
|
|
NS_ENSURE_ARG_POINTER(aOutEnabled);
|
|
*aOutEnabled = mCaretEnabled;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP PresShell::SetCaretVisibilityDuringSelection(bool aVisibility) {
|
|
if (mCaret) mCaret->SetVisibilityDuringSelection(aVisibility);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP PresShell::GetCaretVisible(bool* aOutIsVisible) {
|
|
*aOutIsVisible = false;
|
|
if (mCaret) {
|
|
*aOutIsVisible = mCaret->IsVisible();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP PresShell::SetSelectionFlags(int16_t aInEnable) {
|
|
mSelectionFlags = aInEnable;
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP PresShell::GetSelectionFlags(int16_t* aOutEnable) {
|
|
if (!aOutEnable) return NS_ERROR_INVALID_ARG;
|
|
*aOutEnable = mSelectionFlags;
|
|
return NS_OK;
|
|
}
|
|
|
|
// implementation of nsISelectionController
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::PhysicalMove(int16_t aDirection, int16_t aAmount, bool aExtend) {
|
|
RefPtr<nsFrameSelection> frameSelection = mSelection;
|
|
return frameSelection->PhysicalMove(aDirection, aAmount, aExtend);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::CharacterMove(bool aForward, bool aExtend) {
|
|
RefPtr<nsFrameSelection> frameSelection = mSelection;
|
|
return frameSelection->CharacterMove(aForward, aExtend);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::CharacterExtendForDelete() {
|
|
RefPtr<nsFrameSelection> frameSelection = mSelection;
|
|
return frameSelection->CharacterExtendForDelete();
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::CharacterExtendForBackspace() {
|
|
RefPtr<nsFrameSelection> frameSelection = mSelection;
|
|
return frameSelection->CharacterExtendForBackspace();
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::WordMove(bool aForward, bool aExtend) {
|
|
RefPtr<nsFrameSelection> frameSelection = mSelection;
|
|
nsresult result = frameSelection->WordMove(aForward, aExtend);
|
|
// if we can't go down/up any more we must then move caret completely to
|
|
// end/beginning respectively.
|
|
if (NS_FAILED(result)) result = CompleteMove(aForward, aExtend);
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::WordExtendForDelete(bool aForward) {
|
|
RefPtr<nsFrameSelection> frameSelection = mSelection;
|
|
return frameSelection->WordExtendForDelete(aForward);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::LineMove(bool aForward, bool aExtend) {
|
|
RefPtr<nsFrameSelection> frameSelection = mSelection;
|
|
nsresult result = frameSelection->LineMove(aForward, aExtend);
|
|
// if we can't go down/up any more we must then move caret completely to
|
|
// end/beginning respectively.
|
|
if (NS_FAILED(result)) result = CompleteMove(aForward, aExtend);
|
|
return result;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::IntraLineMove(bool aForward, bool aExtend) {
|
|
RefPtr<nsFrameSelection> frameSelection = mSelection;
|
|
return frameSelection->IntraLineMove(aForward, aExtend);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::PageMove(bool aForward, bool aExtend) {
|
|
nsIFrame* frame;
|
|
if (!aExtend) {
|
|
frame = do_QueryFrame(GetScrollableFrameToScroll(nsIPresShell::eVertical));
|
|
} else {
|
|
frame = mSelection->GetFrameToPageSelect();
|
|
}
|
|
if (!frame) {
|
|
return NS_OK;
|
|
}
|
|
RefPtr<nsFrameSelection> frameSelection = mSelection;
|
|
frameSelection->CommonPageMove(aForward, aExtend, frame);
|
|
// After ScrollSelectionIntoView(), the pending notifications might be
|
|
// flushed and PresShell/PresContext/Frames may be dead. See bug 418470.
|
|
return ScrollSelectionIntoView(
|
|
nsISelectionController::SELECTION_NORMAL,
|
|
nsISelectionController::SELECTION_FOCUS_REGION,
|
|
nsISelectionController::SCROLL_SYNCHRONOUS |
|
|
nsISelectionController::SCROLL_FOR_CARET_MOVE);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::ScrollPage(bool aForward) {
|
|
nsIScrollableFrame* scrollFrame =
|
|
GetScrollableFrameToScroll(nsIPresShell::eVertical);
|
|
if (scrollFrame) {
|
|
scrollFrame->ScrollBy(nsIntPoint(0, aForward ? 1 : -1),
|
|
nsIScrollableFrame::PAGES, nsIScrollableFrame::SMOOTH,
|
|
nullptr, nullptr, nsIScrollableFrame::NOT_MOMENTUM,
|
|
nsIScrollableFrame::ENABLE_SNAP);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::ScrollLine(bool aForward) {
|
|
nsIScrollableFrame* scrollFrame =
|
|
GetScrollableFrameToScroll(nsIPresShell::eVertical);
|
|
if (scrollFrame) {
|
|
int32_t lineCount =
|
|
Preferences::GetInt("toolkit.scrollbox.verticalScrollDistance",
|
|
NS_DEFAULT_VERTICAL_SCROLL_DISTANCE);
|
|
scrollFrame->ScrollBy(nsIntPoint(0, aForward ? lineCount : -lineCount),
|
|
nsIScrollableFrame::LINES, nsIScrollableFrame::SMOOTH,
|
|
nullptr, nullptr, nsIScrollableFrame::NOT_MOMENTUM,
|
|
nsIScrollableFrame::ENABLE_SNAP);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::ScrollCharacter(bool aRight) {
|
|
nsIScrollableFrame* scrollFrame =
|
|
GetScrollableFrameToScroll(nsIPresShell::eHorizontal);
|
|
if (scrollFrame) {
|
|
int32_t h =
|
|
Preferences::GetInt("toolkit.scrollbox.horizontalScrollDistance",
|
|
NS_DEFAULT_HORIZONTAL_SCROLL_DISTANCE);
|
|
scrollFrame->ScrollBy(nsIntPoint(aRight ? h : -h, 0),
|
|
nsIScrollableFrame::LINES, nsIScrollableFrame::SMOOTH,
|
|
nullptr, nullptr, nsIScrollableFrame::NOT_MOMENTUM,
|
|
nsIScrollableFrame::ENABLE_SNAP);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::CompleteScroll(bool aForward) {
|
|
nsIScrollableFrame* scrollFrame =
|
|
GetScrollableFrameToScroll(nsIPresShell::eVertical);
|
|
if (scrollFrame) {
|
|
scrollFrame->ScrollBy(nsIntPoint(0, aForward ? 1 : -1),
|
|
nsIScrollableFrame::WHOLE, nsIScrollableFrame::SMOOTH,
|
|
nullptr, nullptr, nsIScrollableFrame::NOT_MOMENTUM,
|
|
nsIScrollableFrame::ENABLE_SNAP);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::CompleteMove(bool aForward, bool aExtend) {
|
|
// Beware! This may flush notifications via synchronous
|
|
// ScrollSelectionIntoView.
|
|
RefPtr<nsFrameSelection> frameSelection = mSelection;
|
|
nsIContent* limiter = frameSelection->GetAncestorLimiter();
|
|
nsIFrame* frame = limiter ? limiter->GetPrimaryFrame()
|
|
: FrameConstructor()->GetRootElementFrame();
|
|
if (!frame) return NS_ERROR_FAILURE;
|
|
nsIFrame::CaretPosition pos = frame->GetExtremeCaretPosition(!aForward);
|
|
frameSelection->HandleClick(
|
|
pos.mResultContent, pos.mContentOffset, pos.mContentOffset, aExtend,
|
|
false, aForward ? CARET_ASSOCIATE_AFTER : CARET_ASSOCIATE_BEFORE);
|
|
if (limiter) {
|
|
// HandleClick resets ancestorLimiter, so set it again.
|
|
frameSelection->SetAncestorLimiter(limiter);
|
|
}
|
|
|
|
// After ScrollSelectionIntoView(), the pending notifications might be
|
|
// flushed and PresShell/PresContext/Frames may be dead. See bug 418470.
|
|
return ScrollSelectionIntoView(
|
|
nsISelectionController::SELECTION_NORMAL,
|
|
nsISelectionController::SELECTION_FOCUS_REGION,
|
|
nsISelectionController::SCROLL_SYNCHRONOUS |
|
|
nsISelectionController::SCROLL_FOR_CARET_MOVE);
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::SelectAll() {
|
|
RefPtr<nsFrameSelection> frameSelection = mSelection;
|
|
return frameSelection->SelectAll();
|
|
}
|
|
|
|
static void DoCheckVisibility(nsPresContext* aPresContext, nsIContent* aNode,
|
|
int16_t aStartOffset, int16_t aEndOffset,
|
|
bool* aRetval) {
|
|
nsIFrame* frame = aNode->GetPrimaryFrame();
|
|
if (!frame) {
|
|
// No frame to look at so it must not be visible.
|
|
return;
|
|
}
|
|
|
|
// Start process now to go through all frames to find startOffset. Then check
|
|
// chars after that to see if anything until EndOffset is visible.
|
|
bool finished = false;
|
|
frame->CheckVisibility(aPresContext, aStartOffset, aEndOffset, true,
|
|
&finished, aRetval);
|
|
// Don't worry about other return value.
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::CheckVisibility(nsINode* node, int16_t startOffset,
|
|
int16_t EndOffset, bool* _retval) {
|
|
if (!node || startOffset > EndOffset || !_retval || startOffset < 0 ||
|
|
EndOffset < 0)
|
|
return NS_ERROR_INVALID_ARG;
|
|
*_retval = false; // initialize return parameter
|
|
nsCOMPtr<nsIContent> content(do_QueryInterface(node));
|
|
if (!content) return NS_ERROR_FAILURE;
|
|
|
|
DoCheckVisibility(mPresContext, content, startOffset, EndOffset, _retval);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult PresShell::CheckVisibilityContent(nsIContent* aNode,
|
|
int16_t aStartOffset,
|
|
int16_t aEndOffset, bool* aRetval) {
|
|
if (!aNode || aStartOffset > aEndOffset || !aRetval || aStartOffset < 0 ||
|
|
aEndOffset < 0) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
*aRetval = false;
|
|
DoCheckVisibility(mPresContext, aNode, aStartOffset, aEndOffset, aRetval);
|
|
return NS_OK;
|
|
}
|
|
|
|
// end implementations nsISelectionController
|
|
|
|
nsIFrame* nsIPresShell::GetRootScrollFrame() const {
|
|
nsIFrame* rootFrame = mFrameConstructor->GetRootFrame();
|
|
// Ensure root frame is a viewport frame
|
|
if (!rootFrame || !rootFrame->IsViewportFrame()) return nullptr;
|
|
nsIFrame* theFrame = rootFrame->PrincipalChildList().FirstChild();
|
|
if (!theFrame || !theFrame->IsScrollFrame()) return nullptr;
|
|
return theFrame;
|
|
}
|
|
|
|
nsIScrollableFrame* nsIPresShell::GetRootScrollFrameAsScrollable() const {
|
|
nsIFrame* frame = GetRootScrollFrame();
|
|
if (!frame) return nullptr;
|
|
nsIScrollableFrame* scrollableFrame = do_QueryFrame(frame);
|
|
NS_ASSERTION(scrollableFrame,
|
|
"All scroll frames must implement nsIScrollableFrame");
|
|
return scrollableFrame;
|
|
}
|
|
|
|
nsIPageSequenceFrame* PresShell::GetPageSequenceFrame() const {
|
|
nsIFrame* frame = mFrameConstructor->GetPageSequenceFrame();
|
|
return do_QueryFrame(frame);
|
|
}
|
|
|
|
nsCanvasFrame* PresShell::GetCanvasFrame() const {
|
|
nsIFrame* frame = mFrameConstructor->GetDocElementContainingBlock();
|
|
return do_QueryFrame(frame);
|
|
}
|
|
|
|
void PresShell::RestoreRootScrollPosition() {
|
|
nsIScrollableFrame* scrollableFrame = GetRootScrollFrameAsScrollable();
|
|
if (scrollableFrame) {
|
|
scrollableFrame->ScrollToRestoredPosition();
|
|
}
|
|
}
|
|
|
|
void PresShell::MaybeReleaseCapturingContent() {
|
|
RefPtr<nsFrameSelection> frameSelection = FrameSelection();
|
|
if (frameSelection) {
|
|
frameSelection->SetDragState(false);
|
|
}
|
|
if (gCaptureInfo.mContent && gCaptureInfo.mContent->OwnerDoc() == mDocument) {
|
|
SetCapturingContent(nullptr, 0);
|
|
}
|
|
}
|
|
|
|
void PresShell::BeginLoad(nsIDocument* aDocument) {
|
|
mDocumentLoading = true;
|
|
|
|
gfxTextPerfMetrics* tp = nullptr;
|
|
if (mPresContext) {
|
|
tp = mPresContext->GetTextPerfMetrics();
|
|
}
|
|
|
|
bool shouldLog = MOZ_LOG_TEST(gLog, LogLevel::Debug);
|
|
if (shouldLog || tp) {
|
|
mLoadBegin = TimeStamp::Now();
|
|
}
|
|
|
|
if (shouldLog) {
|
|
nsIURI* uri = mDocument->GetDocumentURI();
|
|
MOZ_LOG(gLog, LogLevel::Debug,
|
|
("(presshell) %p load begin [%s]\n", this,
|
|
uri ? uri->GetSpecOrDefault().get() : ""));
|
|
}
|
|
}
|
|
|
|
void PresShell::EndLoad(nsIDocument* aDocument) {
|
|
MOZ_ASSERT(aDocument == mDocument, "Wrong document");
|
|
|
|
RestoreRootScrollPosition();
|
|
|
|
mDocumentLoading = false;
|
|
}
|
|
|
|
void PresShell::LoadComplete() {
|
|
gfxTextPerfMetrics* tp = nullptr;
|
|
if (mPresContext) {
|
|
tp = mPresContext->GetTextPerfMetrics();
|
|
}
|
|
|
|
// log load
|
|
bool shouldLog = MOZ_LOG_TEST(gLog, LogLevel::Debug);
|
|
if (shouldLog || tp) {
|
|
TimeDuration loadTime = TimeStamp::Now() - mLoadBegin;
|
|
nsIURI* uri = mDocument->GetDocumentURI();
|
|
nsAutoCString spec;
|
|
if (uri) {
|
|
spec = uri->GetSpecOrDefault();
|
|
}
|
|
if (shouldLog) {
|
|
MOZ_LOG(gLog, LogLevel::Debug,
|
|
("(presshell) %p load done time-ms: %9.2f [%s]\n", this,
|
|
loadTime.ToMilliseconds(), spec.get()));
|
|
}
|
|
if (tp) {
|
|
tp->Accumulate();
|
|
if (tp->cumulative.numChars > 0) {
|
|
LogTextPerfStats(tp, this, tp->cumulative, loadTime.ToMilliseconds(),
|
|
eLog_loaddone, spec.get());
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
void PresShell::VerifyHasDirtyRootAncestor(nsIFrame* aFrame) {
|
|
// XXXbz due to bug 372769, can't actually assert anything here...
|
|
return;
|
|
|
|
// XXXbz shouldn't need this part; remove it once FrameNeedsReflow
|
|
// handles the root frame correctly.
|
|
if (!aFrame->GetParent()) {
|
|
return;
|
|
}
|
|
|
|
// Make sure that there is a reflow root ancestor of |aFrame| that's
|
|
// in mDirtyRoots already.
|
|
while (aFrame && (aFrame->GetStateBits() & NS_FRAME_HAS_DIRTY_CHILDREN)) {
|
|
if ((aFrame->HasAnyStateBits(NS_FRAME_REFLOW_ROOT |
|
|
NS_FRAME_DYNAMIC_REFLOW_ROOT) ||
|
|
!aFrame->GetParent()) &&
|
|
mDirtyRoots.Contains(aFrame)) {
|
|
return;
|
|
}
|
|
|
|
aFrame = aFrame->GetParent();
|
|
}
|
|
|
|
MOZ_ASSERT_UNREACHABLE(
|
|
"Frame has dirty bits set but isn't scheduled to be "
|
|
"reflowed?");
|
|
}
|
|
#endif
|
|
|
|
void PresShell::FrameNeedsReflow(nsIFrame* aFrame,
|
|
IntrinsicDirty aIntrinsicDirty,
|
|
nsFrameState aBitToAdd,
|
|
ReflowRootHandling aRootHandling) {
|
|
MOZ_ASSERT(aBitToAdd == NS_FRAME_IS_DIRTY ||
|
|
aBitToAdd == NS_FRAME_HAS_DIRTY_CHILDREN || !aBitToAdd,
|
|
"Unexpected bits being added");
|
|
|
|
// FIXME bug 478135
|
|
NS_ASSERTION(!(aIntrinsicDirty == eStyleChange &&
|
|
aBitToAdd == NS_FRAME_HAS_DIRTY_CHILDREN),
|
|
"bits don't correspond to style change reason");
|
|
|
|
// FIXME bug 457400
|
|
NS_ASSERTION(!mIsReflowing, "can't mark frame dirty during reflow");
|
|
|
|
// If we've not yet done the initial reflow, then don't bother
|
|
// enqueuing a reflow command yet.
|
|
if (!mDidInitialize) return;
|
|
|
|
// If we're already destroying, don't bother with this either.
|
|
if (mIsDestroying) return;
|
|
|
|
#ifdef DEBUG
|
|
// printf("gShellCounter: %d\n", gShellCounter++);
|
|
if (mInVerifyReflow) return;
|
|
|
|
if (VERIFY_REFLOW_NOISY_RC & gVerifyReflowFlags) {
|
|
printf("\nPresShell@%p: frame %p needs reflow\n", (void*)this,
|
|
(void*)aFrame);
|
|
if (VERIFY_REFLOW_REALLY_NOISY_RC & gVerifyReflowFlags) {
|
|
printf("Current content model:\n");
|
|
Element* rootElement = mDocument->GetRootElement();
|
|
if (rootElement) {
|
|
rootElement->List(stdout, 0);
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
AutoTArray<nsIFrame*, 4> subtrees;
|
|
subtrees.AppendElement(aFrame);
|
|
|
|
do {
|
|
nsIFrame* subtreeRoot = subtrees.PopLastElement();
|
|
|
|
// Grab |wasDirty| now so we can go ahead and update the bits on
|
|
// subtreeRoot.
|
|
bool wasDirty = NS_SUBTREE_DIRTY(subtreeRoot);
|
|
subtreeRoot->AddStateBits(aBitToAdd);
|
|
|
|
// Determine whether we need to keep looking for the next ancestor
|
|
// reflow root if subtreeRoot itself is a reflow root.
|
|
bool targetNeedsReflowFromParent;
|
|
switch (aRootHandling) {
|
|
case ePositionOrSizeChange:
|
|
targetNeedsReflowFromParent = true;
|
|
break;
|
|
case eNoPositionOrSizeChange:
|
|
targetNeedsReflowFromParent = false;
|
|
break;
|
|
case eInferFromBitToAdd:
|
|
targetNeedsReflowFromParent = (aBitToAdd == NS_FRAME_IS_DIRTY);
|
|
break;
|
|
}
|
|
|
|
#define FRAME_IS_REFLOW_ROOT(_f) \
|
|
((_f)->HasAnyStateBits(NS_FRAME_REFLOW_ROOT | \
|
|
NS_FRAME_DYNAMIC_REFLOW_ROOT) && \
|
|
((_f) != subtreeRoot || !targetNeedsReflowFromParent))
|
|
|
|
// Mark the intrinsic widths as dirty on the frame, all of its ancestors,
|
|
// and all of its descendants, if needed:
|
|
|
|
if (aIntrinsicDirty != nsIPresShell::eResize) {
|
|
// Mark argument and all ancestors dirty. (Unless we hit a reflow
|
|
// root that should contain the reflow. That root could be
|
|
// subtreeRoot itself if it's not dirty, or it could be some
|
|
// ancestor of subtreeRoot.)
|
|
for (nsIFrame* a = subtreeRoot; a && !FRAME_IS_REFLOW_ROOT(a);
|
|
a = a->GetParent()) {
|
|
a->MarkIntrinsicISizesDirty();
|
|
if (a->HasAnyStateBits(NS_FRAME_OUT_OF_FLOW) &&
|
|
a->IsAbsolutelyPositioned()) {
|
|
// If we get here, 'a' is abspos, so its subtree's intrinsic sizing
|
|
// has no effect on its ancestors' intrinsic sizing. So, don't loop
|
|
// upwards any further.
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (aIntrinsicDirty == eStyleChange) {
|
|
// Mark all descendants dirty (using an nsTArray stack rather than
|
|
// recursion).
|
|
// Note that ReflowInput::InitResizeFlags has some similar
|
|
// code; see comments there for how and why it differs.
|
|
AutoTArray<nsIFrame*, 32> stack;
|
|
stack.AppendElement(subtreeRoot);
|
|
|
|
do {
|
|
nsIFrame* f = stack.PopLastElement();
|
|
|
|
if (f->IsPlaceholderFrame()) {
|
|
nsIFrame* oof = nsPlaceholderFrame::GetRealFrameForPlaceholder(f);
|
|
if (!nsLayoutUtils::IsProperAncestorFrame(subtreeRoot, oof)) {
|
|
// We have another distinct subtree we need to mark.
|
|
subtrees.AppendElement(oof);
|
|
}
|
|
}
|
|
|
|
nsIFrame::ChildListIterator lists(f);
|
|
for (; !lists.IsDone(); lists.Next()) {
|
|
for (nsIFrame* kid : lists.CurrentList()) {
|
|
kid->MarkIntrinsicISizesDirty();
|
|
stack.AppendElement(kid);
|
|
}
|
|
}
|
|
} while (stack.Length() != 0);
|
|
}
|
|
|
|
// Skip setting dirty bits up the tree if we weren't given a bit to add.
|
|
if (!aBitToAdd) {
|
|
continue;
|
|
}
|
|
|
|
// Set NS_FRAME_HAS_DIRTY_CHILDREN bits (via nsIFrame::ChildIsDirty)
|
|
// up the tree until we reach either a frame that's already dirty or
|
|
// a reflow root.
|
|
nsIFrame* f = subtreeRoot;
|
|
for (;;) {
|
|
if (FRAME_IS_REFLOW_ROOT(f) || !f->GetParent()) {
|
|
// we've hit a reflow root or the root frame
|
|
if (!wasDirty) {
|
|
mDirtyRoots.Add(f);
|
|
SetNeedLayoutFlush();
|
|
}
|
|
#ifdef DEBUG
|
|
else {
|
|
VerifyHasDirtyRootAncestor(f);
|
|
}
|
|
#endif
|
|
|
|
break;
|
|
}
|
|
|
|
nsIFrame* child = f;
|
|
f = f->GetParent();
|
|
wasDirty = NS_SUBTREE_DIRTY(f);
|
|
f->ChildIsDirty(child);
|
|
NS_ASSERTION(f->GetStateBits() & NS_FRAME_HAS_DIRTY_CHILDREN,
|
|
"ChildIsDirty didn't do its job");
|
|
if (wasDirty) {
|
|
// This frame was already marked dirty.
|
|
#ifdef DEBUG
|
|
VerifyHasDirtyRootAncestor(f);
|
|
#endif
|
|
break;
|
|
}
|
|
}
|
|
} while (subtrees.Length() != 0);
|
|
|
|
MaybeScheduleReflow();
|
|
}
|
|
|
|
void PresShell::FrameNeedsToContinueReflow(nsIFrame* aFrame) {
|
|
NS_ASSERTION(mIsReflowing, "Must be in reflow when marking path dirty.");
|
|
MOZ_ASSERT(mCurrentReflowRoot, "Must have a current reflow root here");
|
|
NS_ASSERTION(
|
|
aFrame == mCurrentReflowRoot ||
|
|
nsLayoutUtils::IsProperAncestorFrame(mCurrentReflowRoot, aFrame),
|
|
"Frame passed in is not the descendant of mCurrentReflowRoot");
|
|
NS_ASSERTION(aFrame->GetStateBits() & NS_FRAME_IN_REFLOW,
|
|
"Frame passed in not in reflow?");
|
|
|
|
mFramesToDirty.PutEntry(aFrame);
|
|
}
|
|
|
|
already_AddRefed<nsIContent> nsIPresShell::GetContentForScrolling() const {
|
|
if (nsCOMPtr<nsIContent> focused = GetFocusedContentInOurWindow()) {
|
|
return focused.forget();
|
|
}
|
|
return GetSelectedContentForScrolling();
|
|
}
|
|
|
|
already_AddRefed<nsIContent> nsIPresShell::GetSelectedContentForScrolling()
|
|
const {
|
|
nsCOMPtr<nsIContent> selectedContent;
|
|
if (mSelection) {
|
|
Selection* domSelection = mSelection->GetSelection(SelectionType::eNormal);
|
|
if (domSelection) {
|
|
selectedContent =
|
|
nsIContent::FromNodeOrNull(domSelection->GetFocusNode());
|
|
}
|
|
}
|
|
return selectedContent.forget();
|
|
}
|
|
|
|
nsIScrollableFrame* nsIPresShell::GetNearestScrollableFrame(
|
|
nsIFrame* aFrame, nsIPresShell::ScrollDirection aDirection) {
|
|
if (aDirection == nsIPresShell::eEither) {
|
|
return nsLayoutUtils::GetNearestScrollableFrame(aFrame);
|
|
}
|
|
|
|
return nsLayoutUtils::GetNearestScrollableFrameForDirection(
|
|
aFrame, aDirection == eVertical ? nsLayoutUtils::eVertical
|
|
: nsLayoutUtils::eHorizontal);
|
|
}
|
|
|
|
nsIScrollableFrame* nsIPresShell::GetScrollableFrameToScrollForContent(
|
|
nsIContent* aContent, nsIPresShell::ScrollDirection aDirection) {
|
|
nsIScrollableFrame* scrollFrame = nullptr;
|
|
if (aContent) {
|
|
nsIFrame* startFrame = aContent->GetPrimaryFrame();
|
|
if (startFrame) {
|
|
scrollFrame = startFrame->GetScrollTargetFrame();
|
|
if (scrollFrame) {
|
|
startFrame = scrollFrame->GetScrolledFrame();
|
|
}
|
|
scrollFrame = GetNearestScrollableFrame(startFrame, aDirection);
|
|
}
|
|
}
|
|
if (!scrollFrame) {
|
|
scrollFrame = GetRootScrollFrameAsScrollable();
|
|
if (!scrollFrame || !scrollFrame->GetScrolledFrame()) {
|
|
return nullptr;
|
|
}
|
|
scrollFrame =
|
|
GetNearestScrollableFrame(scrollFrame->GetScrolledFrame(), aDirection);
|
|
}
|
|
return scrollFrame;
|
|
}
|
|
|
|
nsIScrollableFrame* nsIPresShell::GetScrollableFrameToScroll(
|
|
nsIPresShell::ScrollDirection aDirection) {
|
|
nsCOMPtr<nsIContent> content = GetContentForScrolling();
|
|
return GetScrollableFrameToScrollForContent(content.get(), aDirection);
|
|
}
|
|
|
|
void PresShell::CancelAllPendingReflows() {
|
|
mDirtyRoots.Clear();
|
|
|
|
if (mObservingLayoutFlushes) {
|
|
GetPresContext()->RefreshDriver()->RemoveLayoutFlushObserver(this);
|
|
mObservingLayoutFlushes = false;
|
|
}
|
|
|
|
ASSERT_REFLOW_SCHEDULED_STATE();
|
|
}
|
|
|
|
static bool DestroyFramesAndStyleDataFor(
|
|
Element* aElement, nsPresContext& aPresContext,
|
|
RestyleManager::IncludeRoot aIncludeRoot) {
|
|
bool didReconstruct =
|
|
aPresContext.FrameConstructor()->DestroyFramesFor(aElement);
|
|
RestyleManager::ClearServoDataFromSubtree(aElement, aIncludeRoot);
|
|
return didReconstruct;
|
|
}
|
|
|
|
void nsIPresShell::SlotAssignmentWillChange(Element& aElement,
|
|
HTMLSlotElement* aOldSlot,
|
|
HTMLSlotElement* aNewSlot) {
|
|
MOZ_ASSERT(aOldSlot != aNewSlot);
|
|
|
|
if (MOZ_UNLIKELY(!mDidInitialize)) {
|
|
return;
|
|
}
|
|
|
|
// If the old slot is about to become empty, let layout know that it needs to
|
|
// do work.
|
|
if (aOldSlot && aOldSlot->AssignedNodes().Length() == 1) {
|
|
DestroyFramesForAndRestyle(aOldSlot);
|
|
}
|
|
|
|
// Ensure the new element starts off clean.
|
|
DestroyFramesAndStyleDataFor(&aElement, *mPresContext,
|
|
RestyleManager::IncludeRoot::Yes);
|
|
|
|
if (aNewSlot) {
|
|
// If the new slot will stop showing fallback content, we need to reframe it
|
|
// altogether.
|
|
if (aNewSlot->AssignedNodes().IsEmpty()) {
|
|
DestroyFramesForAndRestyle(aNewSlot);
|
|
// Otherwise we just care about the element, but we need to ensure that
|
|
// something takes care of traversing to the relevant slot, if needed.
|
|
} else if (aNewSlot->HasServoData() &&
|
|
!Servo_Element_IsDisplayNone(aNewSlot)) {
|
|
// Set the reframe bits...
|
|
aNewSlot->NoteDescendantsNeedFramesForServo();
|
|
aElement.SetFlags(NODE_NEEDS_FRAME);
|
|
// Now the style dirty bits. Note that we can't just do
|
|
// aElement.NoteDirtyForServo(), because the new slot is not setup yet.
|
|
aNewSlot->SetHasDirtyDescendantsForServo();
|
|
aNewSlot->NoteDirtySubtreeForServo();
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
static void AssertNoFramesInSubtree(nsIContent* aContent) {
|
|
for (nsIContent* c = aContent; c; c = c->GetNextNode(aContent)) {
|
|
MOZ_ASSERT(!c->GetPrimaryFrame());
|
|
if (auto* shadowRoot = c->GetShadowRoot()) {
|
|
AssertNoFramesInSubtree(shadowRoot);
|
|
}
|
|
if (auto* binding = c->GetXBLBinding()) {
|
|
if (auto* bindingWithContent = binding->GetBindingWithContent()) {
|
|
nsIContent* anonContent = bindingWithContent->GetAnonymousContent();
|
|
MOZ_ASSERT(!anonContent->GetPrimaryFrame());
|
|
|
|
// Need to do this instead of just AssertNoFramesInSubtree(anonContent),
|
|
// because the parent of the children of the <content> element isn't the
|
|
// <content> element, but the bound element, and that confuses
|
|
// GetNextNode a lot.
|
|
for (nsIContent* child = anonContent->GetFirstChild(); child;
|
|
child = child->GetNextSibling()) {
|
|
AssertNoFramesInSubtree(child);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
void nsIPresShell::DestroyFramesForAndRestyle(Element* aElement) {
|
|
#ifdef DEBUG
|
|
auto postCondition =
|
|
mozilla::MakeScopeExit([&]() { AssertNoFramesInSubtree(aElement); });
|
|
#endif
|
|
|
|
MOZ_ASSERT(aElement);
|
|
if (MOZ_UNLIKELY(!mDidInitialize)) {
|
|
return;
|
|
}
|
|
|
|
if (!aElement->GetFlattenedTreeParentNode()) {
|
|
// Nothing to do here, the element already is out of the frame tree.
|
|
return;
|
|
}
|
|
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
|
|
// Mark ourselves as not safe to flush while we're doing frame destruction.
|
|
++mChangeNestCount;
|
|
|
|
const bool didReconstruct = FrameConstructor()->DestroyFramesFor(aElement);
|
|
|
|
// Clear the style data from all the flattened tree descendants, but _not_
|
|
// from us, since otherwise we wouldn't see the reframe.
|
|
RestyleManager::ClearServoDataFromSubtree(aElement,
|
|
RestyleManager::IncludeRoot::No);
|
|
|
|
auto changeHint =
|
|
didReconstruct ? nsChangeHint(0) : nsChangeHint_ReconstructFrame;
|
|
|
|
// NOTE(emilio): eRestyle_Subtree is needed to force also a full subtree
|
|
// restyle for the content (in Stylo, where the existence of frames != the
|
|
// existence of styles).
|
|
mPresContext->RestyleManager()->PostRestyleEvent(aElement, eRestyle_Subtree,
|
|
changeHint);
|
|
|
|
--mChangeNestCount;
|
|
}
|
|
|
|
void nsIPresShell::PostRecreateFramesFor(Element* aElement) {
|
|
if (MOZ_UNLIKELY(!mDidInitialize)) {
|
|
// Nothing to do here. In fact, if we proceed and aElement is the root, we
|
|
// will crash.
|
|
return;
|
|
}
|
|
|
|
mPresContext->RestyleManager()->PostRestyleEvent(
|
|
aElement, nsRestyleHint(0), nsChangeHint_ReconstructFrame);
|
|
}
|
|
|
|
void nsIPresShell::RestyleForAnimation(Element* aElement, nsRestyleHint aHint) {
|
|
// Now that we no longer have separate non-animation and animation
|
|
// restyles, this method having a distinct identity is less important,
|
|
// but it still seems useful to offer as a "more public" API and as a
|
|
// chokepoint for these restyles to go through.
|
|
mPresContext->RestyleManager()->PostRestyleEvent(aElement, aHint,
|
|
nsChangeHint(0));
|
|
}
|
|
|
|
void nsIPresShell::SetForwardingContainer(
|
|
const WeakPtr<nsDocShell>& aContainer) {
|
|
mForwardingContainer = aContainer;
|
|
}
|
|
|
|
void PresShell::ClearFrameRefs(nsIFrame* aFrame) {
|
|
mPresContext->EventStateManager()->ClearFrameRefs(aFrame);
|
|
|
|
AutoWeakFrame* weakFrame = mAutoWeakFrames;
|
|
while (weakFrame) {
|
|
AutoWeakFrame* prev = weakFrame->GetPreviousWeakFrame();
|
|
if (weakFrame->GetFrame() == aFrame) {
|
|
// This removes weakFrame from mAutoWeakFrames.
|
|
weakFrame->Clear(this);
|
|
}
|
|
weakFrame = prev;
|
|
}
|
|
|
|
AutoTArray<WeakFrame*, 4> toRemove;
|
|
for (auto iter = mWeakFrames.Iter(); !iter.Done(); iter.Next()) {
|
|
WeakFrame* weakFrame = iter.Get()->GetKey();
|
|
if (weakFrame->GetFrame() == aFrame) {
|
|
toRemove.AppendElement(weakFrame);
|
|
}
|
|
}
|
|
for (WeakFrame* weakFrame : toRemove) {
|
|
weakFrame->Clear(this);
|
|
}
|
|
}
|
|
|
|
already_AddRefed<gfxContext> PresShell::CreateReferenceRenderingContext() {
|
|
nsDeviceContext* devCtx = mPresContext->DeviceContext();
|
|
RefPtr<gfxContext> rc;
|
|
if (mPresContext->IsScreen()) {
|
|
rc = gfxContext::CreateOrNull(
|
|
gfxPlatform::GetPlatform()->ScreenReferenceDrawTarget().get());
|
|
} else {
|
|
// We assume the devCtx has positive width and height for this call.
|
|
// However, width and height, may be outside of the reasonable range
|
|
// so rc may still be null.
|
|
rc = devCtx->CreateReferenceRenderingContext();
|
|
}
|
|
|
|
return rc ? rc.forget() : nullptr;
|
|
}
|
|
|
|
nsresult PresShell::GoToAnchor(const nsAString& aAnchorName, bool aScroll,
|
|
uint32_t aAdditionalScrollFlags) {
|
|
if (!mDocument) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
const Element* root = mDocument->GetRootElement();
|
|
if (root && root->IsSVGElement(nsGkAtoms::svg)) {
|
|
// We need to execute this even if there is an empty anchor name
|
|
// so that any existing SVG fragment identifier effect is removed
|
|
if (SVGFragmentIdentifier::ProcessFragmentIdentifier(mDocument,
|
|
aAnchorName)) {
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
// Hold a reference to the ESM in case event dispatch tears us down.
|
|
RefPtr<EventStateManager> esm = mPresContext->EventStateManager();
|
|
|
|
if (aAnchorName.IsEmpty()) {
|
|
NS_ASSERTION(!aScroll, "can't scroll to empty anchor name");
|
|
esm->SetContentState(nullptr, NS_EVENT_STATE_URLTARGET);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult rv = NS_OK;
|
|
nsCOMPtr<nsIContent> content;
|
|
|
|
// Search for an element with a matching "id" attribute
|
|
if (mDocument) {
|
|
content = mDocument->GetElementById(aAnchorName);
|
|
}
|
|
|
|
// Search for an anchor element with a matching "name" attribute
|
|
if (!content && mDocument->IsHTMLDocument()) {
|
|
// Find a matching list of named nodes
|
|
nsCOMPtr<nsINodeList> list = mDocument->GetElementsByName(aAnchorName);
|
|
if (list) {
|
|
// Loop through the named nodes looking for the first anchor
|
|
uint32_t length = list->Length();
|
|
for (uint32_t i = 0; i < length; i++) {
|
|
nsIContent* node = list->Item(i);
|
|
if (node->IsHTMLElement(nsGkAtoms::a)) {
|
|
content = node;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Search for anchor in the HTML namespace with a matching name
|
|
if (!content && !mDocument->IsHTMLDocument()) {
|
|
NS_NAMED_LITERAL_STRING(nameSpace, "http://www.w3.org/1999/xhtml");
|
|
// Get the list of anchor elements
|
|
nsCOMPtr<nsINodeList> list =
|
|
mDocument->GetElementsByTagNameNS(nameSpace, NS_LITERAL_STRING("a"));
|
|
// Loop through the anchors looking for the first one with the given name.
|
|
for (uint32_t i = 0; true; i++) {
|
|
nsIContent* node = list->Item(i);
|
|
if (!node) { // End of list
|
|
break;
|
|
}
|
|
|
|
// Compare the name attribute
|
|
if (node->IsElement() &&
|
|
node->AsElement()->AttrValueIs(kNameSpaceID_None, nsGkAtoms::name,
|
|
aAnchorName, eCaseMatters)) {
|
|
content = node;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
esm->SetContentState(content, NS_EVENT_STATE_URLTARGET);
|
|
|
|
#ifdef ACCESSIBILITY
|
|
nsIContent* anchorTarget = content;
|
|
#endif
|
|
|
|
nsIScrollableFrame* rootScroll = GetRootScrollFrameAsScrollable();
|
|
if (rootScroll && rootScroll->DidHistoryRestore()) {
|
|
// Scroll position restored from history trumps scrolling to anchor.
|
|
aScroll = false;
|
|
rootScroll->ClearDidHistoryRestore();
|
|
}
|
|
|
|
if (content) {
|
|
if (aScroll) {
|
|
rv = ScrollContentIntoView(content, ScrollAxis(SCROLL_TOP, SCROLL_ALWAYS),
|
|
ScrollAxis(),
|
|
ANCHOR_SCROLL_FLAGS | aAdditionalScrollFlags);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
nsIScrollableFrame* rootScroll = GetRootScrollFrameAsScrollable();
|
|
if (rootScroll) {
|
|
mLastAnchorScrolledTo = content;
|
|
mLastAnchorScrollPositionY = rootScroll->GetScrollPosition().y;
|
|
}
|
|
}
|
|
|
|
// Should we select the target? This action is controlled by a
|
|
// preference: the default is to not select.
|
|
bool selectAnchor = Preferences::GetBool("layout.selectanchor");
|
|
|
|
// Even if select anchor pref is false, we must still move the
|
|
// caret there. That way tabbing will start from the new
|
|
// location
|
|
RefPtr<nsRange> jumpToRange = new nsRange(mDocument);
|
|
while (content && content->GetFirstChild()) {
|
|
content = content->GetFirstChild();
|
|
}
|
|
jumpToRange->SelectNodeContents(*content, IgnoreErrors());
|
|
// Select the anchor
|
|
RefPtr<Selection> sel = mSelection->GetSelection(SelectionType::eNormal);
|
|
if (sel) {
|
|
sel->RemoveAllRanges(IgnoreErrors());
|
|
sel->AddRange(*jumpToRange, IgnoreErrors());
|
|
if (!selectAnchor) {
|
|
// Use a caret (collapsed selection) at the start of the anchor
|
|
sel->CollapseToStart(IgnoreErrors());
|
|
}
|
|
}
|
|
// Selection is at anchor.
|
|
// Now focus the document itself if focus is on an element within it.
|
|
nsPIDOMWindowOuter* win = mDocument->GetWindow();
|
|
|
|
nsIFocusManager* fm = nsFocusManager::GetFocusManager();
|
|
if (fm && win) {
|
|
nsCOMPtr<mozIDOMWindowProxy> focusedWindow;
|
|
fm->GetFocusedWindow(getter_AddRefs(focusedWindow));
|
|
if (SameCOMIdentity(win, focusedWindow)) {
|
|
fm->ClearFocus(focusedWindow);
|
|
}
|
|
}
|
|
|
|
// If the target is an animation element, activate the animation
|
|
if (content->IsNodeOfType(nsINode::eANIMATION)) {
|
|
SVGContentUtils::ActivateByHyperlink(content.get());
|
|
}
|
|
} else {
|
|
rv = NS_ERROR_FAILURE;
|
|
NS_NAMED_LITERAL_STRING(top, "top");
|
|
if (nsContentUtils::EqualsIgnoreASCIICase(aAnchorName, top)) {
|
|
// Scroll to the top/left if aAnchorName is "top" and there is no element
|
|
// with such a name or id.
|
|
rv = NS_OK;
|
|
nsIScrollableFrame* sf = GetRootScrollFrameAsScrollable();
|
|
// Check |aScroll| after setting |rv| so we set |rv| to the same
|
|
// thing whether or not |aScroll| is true.
|
|
if (aScroll && sf) {
|
|
// Scroll to the top of the page
|
|
sf->ScrollTo(nsPoint(0, 0), nsIScrollableFrame::INSTANT);
|
|
}
|
|
}
|
|
}
|
|
|
|
#ifdef ACCESSIBILITY
|
|
if (anchorTarget) {
|
|
nsAccessibilityService* accService = AccService();
|
|
if (accService) accService->NotifyOfAnchorJumpTo(anchorTarget);
|
|
}
|
|
#endif
|
|
|
|
return rv;
|
|
}
|
|
|
|
nsresult PresShell::ScrollToAnchor() {
|
|
if (!mLastAnchorScrolledTo) {
|
|
return NS_OK;
|
|
}
|
|
NS_ASSERTION(mDidInitialize, "should have done initial reflow by now");
|
|
|
|
nsIScrollableFrame* rootScroll = GetRootScrollFrameAsScrollable();
|
|
if (!rootScroll ||
|
|
mLastAnchorScrollPositionY != rootScroll->GetScrollPosition().y) {
|
|
return NS_OK;
|
|
}
|
|
nsresult rv = ScrollContentIntoView(mLastAnchorScrolledTo,
|
|
ScrollAxis(SCROLL_TOP, SCROLL_ALWAYS),
|
|
ScrollAxis(), ANCHOR_SCROLL_FLAGS);
|
|
mLastAnchorScrolledTo = nullptr;
|
|
return rv;
|
|
}
|
|
|
|
/*
|
|
* Helper (per-continuation) for ScrollContentIntoView.
|
|
*
|
|
* @param aContainerFrame [in] the frame which aRect is relative to
|
|
* @param aFrame [in] Frame whose bounds should be unioned
|
|
* @param aUseWholeLineHeightForInlines [in] if true, then for inline frames
|
|
* we should include the top of the line in the added rectangle
|
|
* @param aRect [inout] rect into which its bounds should be unioned
|
|
* @param aHaveRect [inout] whether aRect contains data yet
|
|
* @param aPrevBlock [inout] the block aLines is a line iterator for
|
|
* @param aLines [inout] the line iterator we're using
|
|
* @param aCurLine [inout] the line to start looking from in this iterator
|
|
*/
|
|
static void AccumulateFrameBounds(nsIFrame* aContainerFrame, nsIFrame* aFrame,
|
|
bool aUseWholeLineHeightForInlines,
|
|
nsRect& aRect, bool& aHaveRect,
|
|
nsIFrame*& aPrevBlock,
|
|
nsAutoLineIterator& aLines,
|
|
int32_t& aCurLine) {
|
|
nsIFrame* frame = aFrame;
|
|
nsRect frameBounds = nsRect(nsPoint(0, 0), aFrame->GetSize());
|
|
|
|
// If this is an inline frame and either the bounds height is 0 (quirks
|
|
// layout model) or aUseWholeLineHeightForInlines is set, we need to
|
|
// change the top of the bounds to include the whole line.
|
|
if (frameBounds.height == 0 || aUseWholeLineHeightForInlines) {
|
|
nsIFrame* prevFrame = aFrame;
|
|
nsIFrame* f = aFrame;
|
|
|
|
while (f && f->IsFrameOfType(nsIFrame::eLineParticipant) &&
|
|
!f->IsTransformed() && !f->IsAbsPosContainingBlock()) {
|
|
prevFrame = f;
|
|
f = prevFrame->GetParent();
|
|
}
|
|
|
|
if (f != aFrame && f && f->IsBlockFrame()) {
|
|
// find the line containing aFrame and increase the top of |offset|.
|
|
if (f != aPrevBlock) {
|
|
aLines = f->GetLineIterator();
|
|
aPrevBlock = f;
|
|
aCurLine = 0;
|
|
}
|
|
if (aLines) {
|
|
int32_t index = aLines->FindLineContaining(prevFrame, aCurLine);
|
|
if (index >= 0) {
|
|
aCurLine = index;
|
|
nsIFrame* trash1;
|
|
int32_t trash2;
|
|
nsRect lineBounds;
|
|
|
|
if (NS_SUCCEEDED(
|
|
aLines->GetLine(index, &trash1, &trash2, lineBounds))) {
|
|
frameBounds += frame->GetOffsetTo(f);
|
|
frame = f;
|
|
if (lineBounds.y < frameBounds.y) {
|
|
frameBounds.height = frameBounds.YMost() - lineBounds.y;
|
|
frameBounds.y = lineBounds.y;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
nsRect transformedBounds = nsLayoutUtils::TransformFrameRectToAncestor(
|
|
frame, frameBounds, aContainerFrame);
|
|
|
|
if (aHaveRect) {
|
|
// We can't use nsRect::UnionRect since it drops empty rects on
|
|
// the floor, and we need to include them. (Thus we need
|
|
// aHaveRect to know when to drop the initial value on the floor.)
|
|
aRect.UnionRectEdges(aRect, transformedBounds);
|
|
} else {
|
|
aHaveRect = true;
|
|
aRect = transformedBounds;
|
|
}
|
|
}
|
|
|
|
static bool ComputeNeedToScroll(nsIPresShell::WhenToScroll aWhenToScroll,
|
|
nscoord aLineSize, nscoord aRectMin,
|
|
nscoord aRectMax, nscoord aViewMin,
|
|
nscoord aViewMax) {
|
|
// See how the rect should be positioned vertically
|
|
if (nsIPresShell::SCROLL_ALWAYS == aWhenToScroll) {
|
|
// The caller wants the frame as visible as possible
|
|
return true;
|
|
} else if (nsIPresShell::SCROLL_IF_NOT_VISIBLE == aWhenToScroll) {
|
|
// Scroll only if no part of the frame is visible in this view
|
|
return aRectMax - aLineSize <= aViewMin || aRectMin + aLineSize >= aViewMax;
|
|
} else if (nsIPresShell::SCROLL_IF_NOT_FULLY_VISIBLE == aWhenToScroll) {
|
|
// Scroll only if part of the frame is hidden and more can fit in view
|
|
return !(aRectMin >= aViewMin && aRectMax <= aViewMax) &&
|
|
std::min(aViewMax, aRectMax) - std::max(aRectMin, aViewMin) <
|
|
aViewMax - aViewMin;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static nscoord ComputeWhereToScroll(int16_t aWhereToScroll,
|
|
nscoord aOriginalCoord, nscoord aRectMin,
|
|
nscoord aRectMax, nscoord aViewMin,
|
|
nscoord aViewMax, nscoord* aRangeMin,
|
|
nscoord* aRangeMax) {
|
|
nscoord resultCoord = aOriginalCoord;
|
|
nscoord scrollPortLength = aViewMax - aViewMin;
|
|
if (nsIPresShell::SCROLL_MINIMUM == aWhereToScroll) {
|
|
// Scroll the minimum amount necessary to show as much as possible of the
|
|
// frame. If the frame is too large, don't hide any initially visible part
|
|
// of it.
|
|
nscoord min = std::min(aRectMin, aRectMax - scrollPortLength);
|
|
nscoord max = std::max(aRectMin, aRectMax - scrollPortLength);
|
|
resultCoord = std::min(std::max(aOriginalCoord, min), max);
|
|
} else {
|
|
nscoord frameAlignCoord = NSToCoordRound(
|
|
aRectMin + (aRectMax - aRectMin) * (aWhereToScroll / 100.0f));
|
|
resultCoord = NSToCoordRound(frameAlignCoord -
|
|
scrollPortLength * (aWhereToScroll / 100.0f));
|
|
}
|
|
// Force the scroll range to extend to include resultCoord.
|
|
*aRangeMin = std::min(resultCoord, aRectMax - scrollPortLength);
|
|
*aRangeMax = std::max(resultCoord, aRectMin);
|
|
return resultCoord;
|
|
}
|
|
|
|
/**
|
|
* This function takes a scrollable frame, a rect in the coordinate system
|
|
* of the scrolled frame, and a desired percentage-based scroll
|
|
* position and attempts to scroll the rect to that position in the
|
|
* visual viewport.
|
|
*
|
|
* This needs to work even if aRect has a width or height of zero.
|
|
*
|
|
* Note that, since we are performing a layout scroll, it's possible that
|
|
* this fnction will sometimes be unsuccessful; the content will move as
|
|
* fast as it can on the screen using layout viewport scrolling, and then
|
|
* stop there, even if it could get closer to the desired position by
|
|
* moving the visual viewport within the layout viewport.
|
|
*/
|
|
static void ScrollToShowRect(nsIScrollableFrame* aFrameAsScrollable,
|
|
const nsRect& aRect,
|
|
nsIPresShell::ScrollAxis aVertical,
|
|
nsIPresShell::ScrollAxis aHorizontal,
|
|
uint32_t aFlags) {
|
|
nsPoint scrollPt = aFrameAsScrollable->GetVisualViewportOffset();
|
|
nsRect visibleRect(scrollPt, aFrameAsScrollable->GetVisualViewportSize());
|
|
|
|
nsSize lineSize;
|
|
// Don't call GetLineScrollAmount unless we actually need it. Not only
|
|
// does this save time, but it's not safe to call GetLineScrollAmount
|
|
// during reflow (because it depends on font size inflation and doesn't
|
|
// use the in-reflow-safe font-size inflation path). If we did call it,
|
|
// it would assert and possible give the wrong result.
|
|
if (aVertical.mWhenToScroll == nsIPresShell::SCROLL_IF_NOT_VISIBLE ||
|
|
aHorizontal.mWhenToScroll == nsIPresShell::SCROLL_IF_NOT_VISIBLE) {
|
|
lineSize = aFrameAsScrollable->GetLineScrollAmount();
|
|
}
|
|
ScrollStyles ss = aFrameAsScrollable->GetScrollStyles();
|
|
nsRect allowedRange(scrollPt, nsSize(0, 0));
|
|
bool needToScroll = false;
|
|
uint32_t directions = aFrameAsScrollable->GetPerceivedScrollingDirections();
|
|
|
|
if (((aFlags & nsIPresShell::SCROLL_OVERFLOW_HIDDEN) ||
|
|
ss.mVertical != StyleOverflow::Hidden) &&
|
|
(!aVertical.mOnlyIfPerceivedScrollableDirection ||
|
|
(directions & nsIScrollableFrame::VERTICAL))) {
|
|
if (ComputeNeedToScroll(aVertical.mWhenToScroll, lineSize.height, aRect.y,
|
|
aRect.YMost(), visibleRect.y,
|
|
visibleRect.YMost())) {
|
|
nscoord maxHeight;
|
|
scrollPt.y = ComputeWhereToScroll(
|
|
aVertical.mWhereToScroll, scrollPt.y, aRect.y, aRect.YMost(),
|
|
visibleRect.y, visibleRect.YMost(), &allowedRange.y, &maxHeight);
|
|
allowedRange.height = maxHeight - allowedRange.y;
|
|
needToScroll = true;
|
|
}
|
|
}
|
|
|
|
if (((aFlags & nsIPresShell::SCROLL_OVERFLOW_HIDDEN) ||
|
|
ss.mHorizontal != StyleOverflow::Hidden) &&
|
|
(!aHorizontal.mOnlyIfPerceivedScrollableDirection ||
|
|
(directions & nsIScrollableFrame::HORIZONTAL))) {
|
|
if (ComputeNeedToScroll(aHorizontal.mWhenToScroll, lineSize.width, aRect.x,
|
|
aRect.XMost(), visibleRect.x,
|
|
visibleRect.XMost())) {
|
|
nscoord maxWidth;
|
|
scrollPt.x = ComputeWhereToScroll(
|
|
aHorizontal.mWhereToScroll, scrollPt.x, aRect.x, aRect.XMost(),
|
|
visibleRect.x, visibleRect.XMost(), &allowedRange.x, &maxWidth);
|
|
allowedRange.width = maxWidth - allowedRange.x;
|
|
needToScroll = true;
|
|
}
|
|
}
|
|
|
|
// If we don't need to scroll, then don't try since it might cancel
|
|
// a current smooth scroll operation.
|
|
if (needToScroll) {
|
|
nsIScrollableFrame::ScrollMode scrollMode = nsIScrollableFrame::INSTANT;
|
|
bool autoBehaviorIsSmooth =
|
|
(aFrameAsScrollable->GetScrollStyles().mScrollBehavior ==
|
|
NS_STYLE_SCROLL_BEHAVIOR_SMOOTH);
|
|
bool smoothScroll =
|
|
(aFlags & nsIPresShell::SCROLL_SMOOTH) ||
|
|
((aFlags & nsIPresShell::SCROLL_SMOOTH_AUTO) && autoBehaviorIsSmooth);
|
|
if (gfxPrefs::ScrollBehaviorEnabled() && smoothScroll) {
|
|
scrollMode = nsIScrollableFrame::SMOOTH_MSD;
|
|
}
|
|
aFrameAsScrollable->ScrollTo(scrollPt, scrollMode, &allowedRange);
|
|
}
|
|
}
|
|
|
|
nsresult PresShell::ScrollContentIntoView(nsIContent* aContent,
|
|
nsIPresShell::ScrollAxis aVertical,
|
|
nsIPresShell::ScrollAxis aHorizontal,
|
|
uint32_t aFlags) {
|
|
NS_ENSURE_TRUE(aContent, NS_ERROR_NULL_POINTER);
|
|
nsCOMPtr<nsIDocument> composedDoc = aContent->GetComposedDoc();
|
|
NS_ENSURE_STATE(composedDoc);
|
|
|
|
NS_ASSERTION(mDidInitialize, "should have done initial reflow by now");
|
|
|
|
if (mContentToScrollTo) {
|
|
mContentToScrollTo->DeleteProperty(nsGkAtoms::scrolling);
|
|
}
|
|
mContentToScrollTo = aContent;
|
|
ScrollIntoViewData* data = new ScrollIntoViewData();
|
|
data->mContentScrollVAxis = aVertical;
|
|
data->mContentScrollHAxis = aHorizontal;
|
|
data->mContentToScrollToFlags = aFlags;
|
|
if (NS_FAILED(mContentToScrollTo->SetProperty(
|
|
nsGkAtoms::scrolling, data,
|
|
nsINode::DeleteProperty<PresShell::ScrollIntoViewData>))) {
|
|
mContentToScrollTo = nullptr;
|
|
}
|
|
|
|
// Flush layout and attempt to scroll in the process.
|
|
if (nsIPresShell* shell = composedDoc->GetShell()) {
|
|
shell->SetNeedLayoutFlush();
|
|
}
|
|
composedDoc->FlushPendingNotifications(FlushType::InterruptibleLayout);
|
|
|
|
// If mContentToScrollTo is non-null, that means we interrupted the reflow
|
|
// (or suppressed it altogether because we're suppressing interruptible
|
|
// flushes right now) and won't necessarily get the position correct, but do
|
|
// a best-effort scroll here. The other option would be to do this inside
|
|
// FlushPendingNotifications, but I'm not sure the repeated scrolling that
|
|
// could trigger if reflows keep getting interrupted would be more desirable
|
|
// than a single best-effort scroll followed by one final scroll on the first
|
|
// completed reflow.
|
|
if (mContentToScrollTo) {
|
|
DoScrollContentIntoView();
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
void PresShell::DoScrollContentIntoView() {
|
|
NS_ASSERTION(mDidInitialize, "should have done initial reflow by now");
|
|
|
|
nsIFrame* frame = mContentToScrollTo->GetPrimaryFrame();
|
|
if (!frame) {
|
|
mContentToScrollTo->DeleteProperty(nsGkAtoms::scrolling);
|
|
mContentToScrollTo = nullptr;
|
|
return;
|
|
}
|
|
|
|
if (frame->GetStateBits() & NS_FRAME_FIRST_REFLOW) {
|
|
// The reflow flush before this scroll got interrupted, and this frame's
|
|
// coords and size are all zero, and it has no content showing anyway.
|
|
// Don't bother scrolling to it. We'll try again when we finish up layout.
|
|
return;
|
|
}
|
|
|
|
// Make sure we skip 'frame' ... if it's scrollable, we should use its
|
|
// scrollable ancestor as the container.
|
|
nsIFrame* container = nsLayoutUtils::GetClosestFrameOfType(
|
|
frame->GetParent(), LayoutFrameType::Scroll);
|
|
if (!container) {
|
|
// nothing can be scrolled
|
|
return;
|
|
}
|
|
|
|
ScrollIntoViewData* data = static_cast<ScrollIntoViewData*>(
|
|
mContentToScrollTo->GetProperty(nsGkAtoms::scrolling));
|
|
if (MOZ_UNLIKELY(!data)) {
|
|
mContentToScrollTo = nullptr;
|
|
return;
|
|
}
|
|
|
|
// This is a two-step process.
|
|
// Step 1: Find the bounds of the rect we want to scroll into view. For
|
|
// example, for an inline frame we may want to scroll in the whole
|
|
// line, or we may want to scroll multiple lines into view.
|
|
// Step 2: Walk container frame and its ancestors and scroll them
|
|
// appropriately.
|
|
// frameBounds is relative to container. We're assuming
|
|
// that scrollframes don't split so every continuation of frame will
|
|
// be a descendant of container. (Things would still mostly work
|
|
// even if that assumption was false.)
|
|
nsRect frameBounds;
|
|
bool haveRect = false;
|
|
bool useWholeLineHeightForInlines = data->mContentScrollVAxis.mWhenToScroll !=
|
|
nsIPresShell::SCROLL_IF_NOT_FULLY_VISIBLE;
|
|
// Reuse the same line iterator across calls to AccumulateFrameBounds. We set
|
|
// it every time we detect a new block (stored in prevBlock).
|
|
nsIFrame* prevBlock = nullptr;
|
|
nsAutoLineIterator lines;
|
|
// The last line we found a continuation on in |lines|. We assume that later
|
|
// continuations cannot come on earlier lines.
|
|
int32_t curLine = 0;
|
|
do {
|
|
AccumulateFrameBounds(container, frame, useWholeLineHeightForInlines,
|
|
frameBounds, haveRect, prevBlock, lines, curLine);
|
|
} while ((frame = frame->GetNextContinuation()));
|
|
|
|
ScrollFrameRectIntoView(container, frameBounds, data->mContentScrollVAxis,
|
|
data->mContentScrollHAxis,
|
|
data->mContentToScrollToFlags);
|
|
}
|
|
|
|
bool PresShell::ScrollFrameRectIntoView(nsIFrame* aFrame, const nsRect& aRect,
|
|
nsIPresShell::ScrollAxis aVertical,
|
|
nsIPresShell::ScrollAxis aHorizontal,
|
|
uint32_t aFlags) {
|
|
bool didScroll = false;
|
|
// This function needs to work even if rect has a width or height of 0.
|
|
nsRect rect = aRect;
|
|
nsIFrame* container = aFrame;
|
|
// Walk up the frame hierarchy scrolling the rect into view and
|
|
// keeping rect relative to container
|
|
do {
|
|
nsIScrollableFrame* sf = do_QueryFrame(container);
|
|
if (sf) {
|
|
nsPoint oldPosition = sf->GetScrollPosition();
|
|
nsRect targetRect = rect;
|
|
// Inflate the scrolled rect by the container's padding in each dimension,
|
|
// unless we have 'overflow-clip-box-*: content-box' in that dimension.
|
|
auto* disp = container->StyleDisplay();
|
|
if (disp->mOverflowClipBoxBlock == StyleOverflowClipBox::ContentBox ||
|
|
disp->mOverflowClipBoxInline == StyleOverflowClipBox::ContentBox) {
|
|
WritingMode wm = container->GetWritingMode();
|
|
bool cbH = (wm.IsVertical() ? disp->mOverflowClipBoxBlock
|
|
: disp->mOverflowClipBoxInline) ==
|
|
StyleOverflowClipBox::ContentBox;
|
|
bool cbV = (wm.IsVertical() ? disp->mOverflowClipBoxInline
|
|
: disp->mOverflowClipBoxBlock) ==
|
|
StyleOverflowClipBox::ContentBox;
|
|
nsMargin padding = container->GetUsedPadding();
|
|
if (!cbH) {
|
|
padding.left = padding.right = nscoord(0);
|
|
}
|
|
if (!cbV) {
|
|
padding.top = padding.bottom = nscoord(0);
|
|
}
|
|
targetRect.Inflate(padding);
|
|
}
|
|
ScrollToShowRect(sf, targetRect - sf->GetScrolledFrame()->GetPosition(),
|
|
aVertical, aHorizontal, aFlags);
|
|
nsPoint newPosition = sf->LastScrollDestination();
|
|
// If the scroll position increased, that means our content moved up,
|
|
// so our rect's offset should decrease
|
|
rect += oldPosition - newPosition;
|
|
|
|
if (oldPosition != newPosition) {
|
|
didScroll = true;
|
|
}
|
|
|
|
// only scroll one container when this flag is set
|
|
if (aFlags & nsIPresShell::SCROLL_FIRST_ANCESTOR_ONLY) {
|
|
break;
|
|
}
|
|
}
|
|
nsIFrame* parent;
|
|
if (container->IsTransformed()) {
|
|
container->GetTransformMatrix(nullptr, &parent);
|
|
rect =
|
|
nsLayoutUtils::TransformFrameRectToAncestor(container, rect, parent);
|
|
} else {
|
|
rect += container->GetPosition();
|
|
parent = container->GetParent();
|
|
}
|
|
if (!parent && !(aFlags & nsIPresShell::SCROLL_NO_PARENT_FRAMES)) {
|
|
nsPoint extraOffset(0, 0);
|
|
parent = nsLayoutUtils::GetCrossDocParentFrame(container, &extraOffset);
|
|
if (parent) {
|
|
int32_t APD = container->PresContext()->AppUnitsPerDevPixel();
|
|
int32_t parentAPD = parent->PresContext()->AppUnitsPerDevPixel();
|
|
rect = rect.ScaleToOtherAppUnitsRoundOut(APD, parentAPD);
|
|
rect += extraOffset;
|
|
}
|
|
}
|
|
container = parent;
|
|
} while (container);
|
|
|
|
return didScroll;
|
|
}
|
|
|
|
nsRectVisibility PresShell::GetRectVisibility(nsIFrame* aFrame,
|
|
const nsRect& aRect,
|
|
nscoord aMinTwips) const {
|
|
NS_ASSERTION(aFrame->PresContext() == GetPresContext(),
|
|
"prescontext mismatch?");
|
|
nsIFrame* rootFrame = mFrameConstructor->GetRootFrame();
|
|
NS_ASSERTION(
|
|
rootFrame,
|
|
"How can someone have a frame for this presshell when there's no root?");
|
|
nsIScrollableFrame* sf = GetRootScrollFrameAsScrollable();
|
|
nsRect scrollPortRect;
|
|
if (sf) {
|
|
scrollPortRect = sf->GetScrollPortRect();
|
|
nsIFrame* f = do_QueryFrame(sf);
|
|
scrollPortRect += f->GetOffsetTo(rootFrame);
|
|
} else {
|
|
scrollPortRect = nsRect(nsPoint(0, 0), rootFrame->GetSize());
|
|
}
|
|
|
|
// scrollPortRect has the viewport visible area relative to rootFrame.
|
|
nsRect visibleAreaRect(scrollPortRect);
|
|
// Find the intersection of this and the frame's ancestor scrollable
|
|
// frames. We walk the whole ancestor chain to find all the scrollable
|
|
// frames.
|
|
nsIScrollableFrame* scrollAncestorFrame =
|
|
nsLayoutUtils::GetNearestScrollableFrame(
|
|
aFrame, nsLayoutUtils::SCROLLABLE_INCLUDE_HIDDEN);
|
|
while (scrollAncestorFrame) {
|
|
nsRect scrollAncestorRect = scrollAncestorFrame->GetScrollPortRect();
|
|
nsIFrame* f = do_QueryFrame(scrollAncestorFrame);
|
|
scrollAncestorRect += f->GetOffsetTo(rootFrame);
|
|
|
|
visibleAreaRect = visibleAreaRect.Intersect(scrollAncestorRect);
|
|
|
|
// Continue up the chain.
|
|
scrollAncestorFrame = nsLayoutUtils::GetNearestScrollableFrame(
|
|
f->GetParent(), nsLayoutUtils::SCROLLABLE_INCLUDE_HIDDEN);
|
|
}
|
|
|
|
// aRect is in the aFrame coordinate space, so bring it into rootFrame
|
|
// coordinate space.
|
|
nsRect r = aRect + aFrame->GetOffsetTo(rootFrame);
|
|
// If aRect is entirely visible then we don't need to ensure that
|
|
// at least aMinTwips of it is visible
|
|
if (visibleAreaRect.Contains(r)) {
|
|
return nsRectVisibility_kVisible;
|
|
}
|
|
|
|
nsRect insetRect = visibleAreaRect;
|
|
insetRect.Deflate(aMinTwips, aMinTwips);
|
|
if (r.YMost() <= insetRect.y) return nsRectVisibility_kAboveViewport;
|
|
if (r.y >= insetRect.YMost()) return nsRectVisibility_kBelowViewport;
|
|
if (r.XMost() <= insetRect.x) return nsRectVisibility_kLeftOfViewport;
|
|
if (r.x >= insetRect.XMost()) return nsRectVisibility_kRightOfViewport;
|
|
|
|
return nsRectVisibility_kVisible;
|
|
}
|
|
|
|
void PresShell::ScheduleViewManagerFlush(PaintType aType) {
|
|
if (MOZ_UNLIKELY(mIsDestroying)) {
|
|
return;
|
|
}
|
|
|
|
if (aType == PAINT_DELAYED_COMPRESS) {
|
|
// Delay paint for 1 second.
|
|
static const uint32_t kPaintDelayPeriod = 1000;
|
|
if (!mDelayedPaintTimer) {
|
|
nsTimerCallbackFunc PaintTimerCallBack = [](nsITimer* aTimer,
|
|
void* aClosure) {
|
|
// The passed-in PresShell is always alive here. Because if PresShell
|
|
// died, mDelayedPaintTimer->Cancel() would be called during the
|
|
// destruction and this callback would never be invoked.
|
|
auto self = static_cast<PresShell*>(aClosure);
|
|
self->SetNextPaintCompressed();
|
|
self->ScheduleViewManagerFlush();
|
|
};
|
|
|
|
NS_NewTimerWithFuncCallback(
|
|
getter_AddRefs(mDelayedPaintTimer), PaintTimerCallBack, this,
|
|
kPaintDelayPeriod, nsITimer::TYPE_ONE_SHOT, "PaintTimerCallBack",
|
|
mDocument->EventTargetFor(TaskCategory::Other));
|
|
}
|
|
return;
|
|
}
|
|
|
|
nsPresContext* presContext = GetPresContext();
|
|
if (presContext) {
|
|
presContext->RefreshDriver()->ScheduleViewManagerFlush();
|
|
}
|
|
SetNeedLayoutFlush();
|
|
}
|
|
|
|
void nsIPresShell::DispatchSynthMouseMove(WidgetGUIEvent* aEvent) {
|
|
AUTO_PROFILER_TRACING_DOCSHELL("Paint", "DispatchSynthMouseMove",
|
|
mPresContext->GetDocShell());
|
|
nsEventStatus status = nsEventStatus_eIgnore;
|
|
nsView* targetView = nsView::GetViewFor(aEvent->mWidget);
|
|
if (!targetView) return;
|
|
targetView->GetViewManager()->DispatchEvent(aEvent, targetView, &status);
|
|
}
|
|
|
|
void PresShell::ClearMouseCaptureOnView(nsView* aView) {
|
|
if (gCaptureInfo.mContent) {
|
|
if (aView) {
|
|
// if a view was specified, ensure that the captured content is within
|
|
// this view.
|
|
nsIFrame* frame = gCaptureInfo.mContent->GetPrimaryFrame();
|
|
if (frame) {
|
|
nsView* view = frame->GetClosestView();
|
|
// if there is no view, capturing won't be handled any more, so
|
|
// just release the capture.
|
|
if (view) {
|
|
do {
|
|
if (view == aView) {
|
|
gCaptureInfo.mContent = nullptr;
|
|
// the view containing the captured content likely disappeared so
|
|
// disable capture for now.
|
|
gCaptureInfo.mAllowed = false;
|
|
break;
|
|
}
|
|
|
|
view = view->GetParent();
|
|
} while (view);
|
|
// return if the view wasn't found
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
gCaptureInfo.mContent = nullptr;
|
|
}
|
|
|
|
// disable mouse capture until the next mousedown as a dialog has opened
|
|
// or a drag has started. Otherwise, someone could start capture during
|
|
// the modal dialog or drag.
|
|
gCaptureInfo.mAllowed = false;
|
|
}
|
|
|
|
void nsIPresShell::ClearMouseCapture(nsIFrame* aFrame) {
|
|
if (!gCaptureInfo.mContent) {
|
|
gCaptureInfo.mAllowed = false;
|
|
return;
|
|
}
|
|
|
|
// null frame argument means clear the capture
|
|
if (!aFrame) {
|
|
gCaptureInfo.mContent = nullptr;
|
|
gCaptureInfo.mAllowed = false;
|
|
return;
|
|
}
|
|
|
|
nsIFrame* capturingFrame = gCaptureInfo.mContent->GetPrimaryFrame();
|
|
if (!capturingFrame) {
|
|
gCaptureInfo.mContent = nullptr;
|
|
gCaptureInfo.mAllowed = false;
|
|
return;
|
|
}
|
|
|
|
if (nsLayoutUtils::IsAncestorFrameCrossDoc(aFrame, capturingFrame)) {
|
|
gCaptureInfo.mContent = nullptr;
|
|
gCaptureInfo.mAllowed = false;
|
|
}
|
|
}
|
|
|
|
nsresult PresShell::CaptureHistoryState(nsILayoutHistoryState** aState) {
|
|
MOZ_ASSERT(nullptr != aState, "null state pointer");
|
|
|
|
// We actually have to mess with the docshell here, since we want to
|
|
// store the state back in it.
|
|
// XXXbz this isn't really right, since this is being called in the
|
|
// content viewer's Hide() method... by that point the docshell's
|
|
// state could be wrong. We should sort out a better ownership
|
|
// model for the layout history state.
|
|
nsCOMPtr<nsIDocShell> docShell(mPresContext->GetDocShell());
|
|
if (!docShell) return NS_ERROR_FAILURE;
|
|
|
|
nsCOMPtr<nsILayoutHistoryState> historyState;
|
|
docShell->GetLayoutHistoryState(getter_AddRefs(historyState));
|
|
if (!historyState) {
|
|
// Create the document state object
|
|
historyState = NS_NewLayoutHistoryState();
|
|
docShell->SetLayoutHistoryState(historyState);
|
|
}
|
|
|
|
*aState = historyState;
|
|
NS_IF_ADDREF(*aState);
|
|
|
|
// Capture frame state for the entire frame hierarchy
|
|
nsIFrame* rootFrame = mFrameConstructor->GetRootFrame();
|
|
if (!rootFrame) return NS_OK;
|
|
|
|
mFrameConstructor->CaptureFrameState(rootFrame, historyState);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void PresShell::ScheduleBeforeFirstPaint() {
|
|
if (!mDocument->IsResourceDoc()) {
|
|
// Notify observers that a new page is about to be drawn. Execute this
|
|
// as soon as it is safe to run JS, which is guaranteed to be before we
|
|
// go back to the event loop and actually draw the page.
|
|
MOZ_LOG(gLog, LogLevel::Debug,
|
|
("PresShell::ScheduleBeforeFirstPaint this=%p", this));
|
|
|
|
nsContentUtils::AddScriptRunner(
|
|
new nsBeforeFirstPaintDispatcher(mDocument));
|
|
}
|
|
}
|
|
|
|
void PresShell::UnsuppressAndInvalidate() {
|
|
// Note: We ignore the EnsureVisible check for resource documents, because
|
|
// they won't have a docshell, so they'll always fail EnsureVisible.
|
|
if ((!mDocument->IsResourceDoc() && !mPresContext->EnsureVisible()) ||
|
|
mHaveShutDown) {
|
|
// No point; we're about to be torn down anyway.
|
|
return;
|
|
}
|
|
|
|
ScheduleBeforeFirstPaint();
|
|
|
|
mPaintingSuppressed = false;
|
|
nsIFrame* rootFrame = mFrameConstructor->GetRootFrame();
|
|
if (rootFrame) {
|
|
// let's assume that outline on a root frame is not supported
|
|
rootFrame->InvalidateFrame();
|
|
}
|
|
|
|
// now that painting is unsuppressed, focus may be set on the document
|
|
if (nsPIDOMWindowOuter* win = mDocument->GetWindow()) win->SetReadyForFocus();
|
|
|
|
if (!mHaveShutDown) {
|
|
SynthesizeMouseMove(false);
|
|
ScheduleApproximateFrameVisibilityUpdateNow();
|
|
}
|
|
}
|
|
|
|
void PresShell::UnsuppressPainting() {
|
|
if (mPaintSuppressionTimer) {
|
|
mPaintSuppressionTimer->Cancel();
|
|
mPaintSuppressionTimer = nullptr;
|
|
}
|
|
|
|
if (mIsDocumentGone || !mPaintingSuppressed) return;
|
|
|
|
// If we have reflows pending, just wait until we process
|
|
// the reflows and get all the frames where we want them
|
|
// before actually unlocking the painting. Otherwise
|
|
// go ahead and unlock now.
|
|
if (!mDirtyRoots.IsEmpty())
|
|
mShouldUnsuppressPainting = true;
|
|
else
|
|
UnsuppressAndInvalidate();
|
|
}
|
|
|
|
// Post a request to handle an arbitrary callback after reflow has finished.
|
|
nsresult PresShell::PostReflowCallback(nsIReflowCallback* aCallback) {
|
|
void* result = AllocateByObjectID(eArenaObjectID_nsCallbackEventRequest,
|
|
sizeof(nsCallbackEventRequest));
|
|
nsCallbackEventRequest* request = (nsCallbackEventRequest*)result;
|
|
|
|
request->callback = aCallback;
|
|
request->next = nullptr;
|
|
|
|
if (mLastCallbackEventRequest) {
|
|
mLastCallbackEventRequest = mLastCallbackEventRequest->next = request;
|
|
} else {
|
|
mFirstCallbackEventRequest = request;
|
|
mLastCallbackEventRequest = request;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void PresShell::CancelReflowCallback(nsIReflowCallback* aCallback) {
|
|
nsCallbackEventRequest* before = nullptr;
|
|
nsCallbackEventRequest* node = mFirstCallbackEventRequest;
|
|
while (node) {
|
|
nsIReflowCallback* callback = node->callback;
|
|
|
|
if (callback == aCallback) {
|
|
nsCallbackEventRequest* toFree = node;
|
|
if (node == mFirstCallbackEventRequest) {
|
|
node = node->next;
|
|
mFirstCallbackEventRequest = node;
|
|
NS_ASSERTION(before == nullptr, "impossible");
|
|
} else {
|
|
node = node->next;
|
|
before->next = node;
|
|
}
|
|
|
|
if (toFree == mLastCallbackEventRequest) {
|
|
mLastCallbackEventRequest = before;
|
|
}
|
|
|
|
FreeByObjectID(eArenaObjectID_nsCallbackEventRequest, toFree);
|
|
} else {
|
|
before = node;
|
|
node = node->next;
|
|
}
|
|
}
|
|
}
|
|
|
|
void PresShell::CancelPostedReflowCallbacks() {
|
|
while (mFirstCallbackEventRequest) {
|
|
nsCallbackEventRequest* node = mFirstCallbackEventRequest;
|
|
mFirstCallbackEventRequest = node->next;
|
|
if (!mFirstCallbackEventRequest) {
|
|
mLastCallbackEventRequest = nullptr;
|
|
}
|
|
nsIReflowCallback* callback = node->callback;
|
|
FreeByObjectID(eArenaObjectID_nsCallbackEventRequest, node);
|
|
if (callback) {
|
|
callback->ReflowCallbackCanceled();
|
|
}
|
|
}
|
|
}
|
|
|
|
void PresShell::HandlePostedReflowCallbacks(bool aInterruptible) {
|
|
bool shouldFlush = false;
|
|
|
|
while (mFirstCallbackEventRequest) {
|
|
nsCallbackEventRequest* node = mFirstCallbackEventRequest;
|
|
mFirstCallbackEventRequest = node->next;
|
|
if (!mFirstCallbackEventRequest) {
|
|
mLastCallbackEventRequest = nullptr;
|
|
}
|
|
nsIReflowCallback* callback = node->callback;
|
|
FreeByObjectID(eArenaObjectID_nsCallbackEventRequest, node);
|
|
if (callback) {
|
|
if (callback->ReflowFinished()) {
|
|
shouldFlush = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
FlushType flushType =
|
|
aInterruptible ? FlushType::InterruptibleLayout : FlushType::Layout;
|
|
if (shouldFlush && !mIsDestroying) {
|
|
FlushPendingNotifications(flushType);
|
|
}
|
|
}
|
|
|
|
bool nsIPresShell::IsSafeToFlush() const {
|
|
// Not safe if we are getting torn down, reflowing, or in the middle of frame
|
|
// construction.
|
|
if (mIsReflowing || mChangeNestCount || mIsDestroying) {
|
|
return false;
|
|
}
|
|
|
|
// Not safe if we are painting
|
|
if (nsViewManager* viewManager = GetViewManager()) {
|
|
bool isPainting = false;
|
|
viewManager->IsPainting(isPainting);
|
|
if (isPainting) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void nsIPresShell::NotifyFontFaceSetOnRefresh() {
|
|
if (FontFaceSet* set = mDocument->GetFonts()) {
|
|
set->DidRefresh();
|
|
}
|
|
}
|
|
|
|
void PresShell::DoFlushPendingNotifications(FlushType aType) {
|
|
// by default, flush animations if aType >= FlushType::Style
|
|
mozilla::ChangesToFlush flush(aType, aType >= FlushType::Style);
|
|
FlushPendingNotifications(flush);
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
static void AssertFrameSubtreeIsSane(const nsIFrame& aRoot) {
|
|
if (const nsIContent* content = aRoot.GetContent()) {
|
|
MOZ_ASSERT(content->GetFlattenedTreeParentNodeForStyle(),
|
|
"Node not in the flattened tree still has a frame?");
|
|
}
|
|
|
|
nsIFrame::ChildListIterator childLists(&aRoot);
|
|
for (; !childLists.IsDone(); childLists.Next()) {
|
|
for (const nsIFrame* child : childLists.CurrentList()) {
|
|
AssertFrameSubtreeIsSane(*child);
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
static inline void AssertFrameTreeIsSane(const nsIPresShell& aShell) {
|
|
#ifdef DEBUG
|
|
if (const nsIFrame* root = aShell.GetRootFrame()) {
|
|
AssertFrameSubtreeIsSane(*root);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
void PresShell::DoFlushPendingNotifications(mozilla::ChangesToFlush aFlush) {
|
|
// Per our API contract, hold a strong ref to ourselves until we return.
|
|
nsCOMPtr<nsIPresShell> kungFuDeathGrip = this;
|
|
|
|
/**
|
|
* VERY IMPORTANT: If you add some sort of new flushing to this
|
|
* method, make sure to add the relevant SetNeedLayoutFlush or
|
|
* SetNeedStyleFlush calls on the shell.
|
|
*/
|
|
FlushType flushType = aFlush.mFlushType;
|
|
|
|
MOZ_ASSERT(NeedFlush(flushType), "Why did we get called?");
|
|
|
|
#ifdef MOZ_GECKO_PROFILER
|
|
// clang-format off
|
|
static const EnumeratedArray<FlushType, FlushType::Count, const char*>
|
|
flushTypeNames = {
|
|
"",
|
|
"Event",
|
|
"Content",
|
|
"ContentAndNotify",
|
|
// As far as the profiler is concerned, EnsurePresShellInitAndFrames and
|
|
// Frames are the same
|
|
"Style",
|
|
"Style",
|
|
"InterruptibleLayout",
|
|
"Layout",
|
|
"Display"
|
|
};
|
|
// clang-format on
|
|
AUTO_PROFILER_LABEL_DYNAMIC_CSTR("PresShell::DoFlushPendingNotifications",
|
|
LAYOUT, flushTypeNames[flushType]);
|
|
#endif
|
|
|
|
#ifdef ACCESSIBILITY
|
|
#ifdef DEBUG
|
|
if (nsAccessibilityService* accService = GetAccService()) {
|
|
NS_ASSERTION(!accService->IsProcessingRefreshDriverNotification(),
|
|
"Flush during accessible tree update!");
|
|
}
|
|
#endif
|
|
#endif
|
|
|
|
NS_ASSERTION(flushType >= FlushType::Frames, "Why did we get called?");
|
|
|
|
mNeedStyleFlush = false;
|
|
mNeedThrottledAnimationFlush =
|
|
mNeedThrottledAnimationFlush && !aFlush.mFlushAnimations;
|
|
mNeedLayoutFlush =
|
|
mNeedLayoutFlush && (flushType < FlushType::InterruptibleLayout);
|
|
|
|
bool isSafeToFlush = IsSafeToFlush();
|
|
|
|
// If layout could possibly trigger scripts, then it's only safe to flush if
|
|
// it's safe to run script.
|
|
bool hasHadScriptObject;
|
|
if (mDocument->GetScriptHandlingObject(hasHadScriptObject) ||
|
|
hasHadScriptObject) {
|
|
isSafeToFlush = isSafeToFlush && nsContentUtils::IsSafeToRunScript();
|
|
}
|
|
|
|
MOZ_DIAGNOSTIC_ASSERT(!mIsDestroying || !isSafeToFlush);
|
|
MOZ_DIAGNOSTIC_ASSERT(mIsDestroying || mViewManager);
|
|
MOZ_DIAGNOSTIC_ASSERT(mIsDestroying || mDocument->HasShellOrBFCacheEntry());
|
|
MOZ_DIAGNOSTIC_ASSERT(mIsDestroying || mDocument->GetShell() == this);
|
|
|
|
// Make sure the view manager stays alive.
|
|
RefPtr<nsViewManager> viewManager = mViewManager;
|
|
bool didStyleFlush = false;
|
|
bool didLayoutFlush = false;
|
|
if (isSafeToFlush) {
|
|
// Record that we are in a flush, so that our optimization in
|
|
// nsDocument::FlushPendingNotifications doesn't skip any re-entrant
|
|
// calls to us. Otherwise, we might miss some needed flushes, since
|
|
// we clear mNeedStyleFlush / mNeedLayoutFlush here at the top of
|
|
// the function but we might not have done the work yet.
|
|
AutoRestore<bool> guard(mInFlush);
|
|
mInFlush = true;
|
|
|
|
// We need to make sure external resource documents are flushed too (for
|
|
// example, svg filters that reference a filter in an external document
|
|
// need the frames in the external document to be constructed for the
|
|
// filter to work). We only need external resources to be flushed when the
|
|
// main document is flushing >= FlushType::Frames, so we flush external
|
|
// resources here instead of nsDocument::FlushPendingNotifications.
|
|
mDocument->FlushExternalResources(flushType);
|
|
|
|
// Force flushing of any pending content notifications that might have
|
|
// queued up while our event was pending. That will ensure that we don't
|
|
// construct frames for content right now that's still waiting to be
|
|
// notified on,
|
|
mDocument->FlushPendingNotifications(FlushType::ContentAndNotify);
|
|
|
|
mDocument->UpdateSVGUseElementShadowTrees();
|
|
|
|
// Process pending restyles, since any flush of the presshell wants
|
|
// up-to-date style data.
|
|
if (MOZ_LIKELY(!mIsDestroying)) {
|
|
viewManager->FlushDelayedResize(false);
|
|
mPresContext->FlushPendingMediaFeatureValuesChanged();
|
|
}
|
|
|
|
if (MOZ_LIKELY(!mIsDestroying)) {
|
|
// Now that we have flushed media queries, update the rules before looking
|
|
// up @font-face / @counter-style / @font-feature-values rules.
|
|
mStyleSet->UpdateStylistIfNeeded();
|
|
|
|
// Flush any pending update of the user font set, since that could
|
|
// cause style changes (for updating ex/ch units, and to cause a
|
|
// reflow).
|
|
mDocument->FlushUserFontSet();
|
|
|
|
mPresContext->FlushCounterStyles();
|
|
|
|
mPresContext->FlushFontFeatureValues();
|
|
|
|
// Flush any requested SMIL samples.
|
|
if (mDocument->HasAnimationController()) {
|
|
mDocument->GetAnimationController()->FlushResampleRequests();
|
|
}
|
|
|
|
if (aFlush.mFlushAnimations && mPresContext->EffectCompositor()) {
|
|
mPresContext->EffectCompositor()->PostRestyleForThrottledAnimations();
|
|
}
|
|
}
|
|
|
|
// The FlushResampleRequests() above flushed style changes.
|
|
if (MOZ_LIKELY(!mIsDestroying)) {
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
#ifdef MOZ_GECKO_PROFILER
|
|
nsCOMPtr<nsIDocShell> docShell = mPresContext->GetDocShell();
|
|
DECLARE_DOCSHELL_AND_HISTORY_ID(docShell);
|
|
AutoProfilerStyleMarker tracingStyleFlush(std::move(mStyleCause),
|
|
docShellId, docShellHistoryId);
|
|
#endif
|
|
|
|
mPresContext->RestyleManager()->ProcessPendingRestyles();
|
|
}
|
|
|
|
// Process whatever XBL constructors those restyles queued up. This
|
|
// ensures that onload doesn't fire too early and that we won't do extra
|
|
// reflows after those constructors run.
|
|
if (MOZ_LIKELY(!mIsDestroying)) {
|
|
mDocument->BindingManager()->ProcessAttachedQueue();
|
|
}
|
|
|
|
// Now those constructors or events might have posted restyle
|
|
// events. At the same time, we still need up-to-date style data.
|
|
// In particular, reflow depends on style being completely up to
|
|
// date. If it's not, then style reparenting, which can
|
|
// happen during reflow, might suddenly pick up the new rules and
|
|
// we'll end up with frames whose style doesn't match the frame
|
|
// type.
|
|
if (MOZ_LIKELY(!mIsDestroying)) {
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
#ifdef MOZ_GECKO_PROFILER
|
|
nsCOMPtr<nsIDocShell> docShell = mPresContext->GetDocShell();
|
|
DECLARE_DOCSHELL_AND_HISTORY_ID(docShell);
|
|
AutoProfilerStyleMarker tracingStyleFlush(std::move(mStyleCause),
|
|
docShellId, docShellHistoryId);
|
|
#endif
|
|
|
|
mPresContext->RestyleManager()->ProcessPendingRestyles();
|
|
// Clear mNeedStyleFlush here agagin to make this flag work properly for
|
|
// optimization since the flag might have set in ProcessPendingRestyles().
|
|
mNeedStyleFlush = false;
|
|
}
|
|
|
|
AssertFrameTreeIsSane(*this);
|
|
|
|
didStyleFlush = true;
|
|
|
|
// There might be more pending constructors now, but we're not going to
|
|
// worry about them. They can't be triggered during reflow, so we should
|
|
// be good.
|
|
|
|
if (flushType >= (SuppressInterruptibleReflows()
|
|
? FlushType::Layout
|
|
: FlushType::InterruptibleLayout) &&
|
|
!mIsDestroying) {
|
|
didLayoutFlush = true;
|
|
mFrameConstructor->RecalcQuotesAndCounters();
|
|
viewManager->FlushDelayedResize(true);
|
|
if (ProcessReflowCommands(flushType < FlushType::Layout) &&
|
|
mContentToScrollTo) {
|
|
// We didn't get interrupted. Go ahead and scroll to our content
|
|
DoScrollContentIntoView();
|
|
if (mContentToScrollTo) {
|
|
mContentToScrollTo->DeleteProperty(nsGkAtoms::scrolling);
|
|
mContentToScrollTo = nullptr;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (flushType >= FlushType::Layout) {
|
|
if (!mIsDestroying) {
|
|
viewManager->UpdateWidgetGeometry();
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!didStyleFlush && flushType >= FlushType::Style && !mIsDestroying) {
|
|
SetNeedStyleFlush();
|
|
if (aFlush.mFlushAnimations) {
|
|
SetNeedThrottledAnimationFlush();
|
|
}
|
|
}
|
|
|
|
if (!didLayoutFlush && flushType >= FlushType::InterruptibleLayout &&
|
|
!mIsDestroying) {
|
|
// We suppressed this flush either due to it not being safe to flush,
|
|
// or due to SuppressInterruptibleReflows(). Either way, the
|
|
// mNeedLayoutFlush flag needs to be re-set.
|
|
SetNeedLayoutFlush();
|
|
}
|
|
}
|
|
|
|
void PresShell::CharacterDataChanged(nsIContent* aContent,
|
|
const CharacterDataChangeInfo& aInfo) {
|
|
MOZ_ASSERT(!mIsDocumentGone, "Unexpected CharacterDataChanged");
|
|
MOZ_ASSERT(aContent->OwnerDoc() == mDocument, "Unexpected document");
|
|
|
|
nsAutoCauseReflowNotifier crNotifier(this);
|
|
|
|
mPresContext->RestyleManager()->CharacterDataChanged(aContent, aInfo);
|
|
mFrameConstructor->CharacterDataChanged(aContent, aInfo);
|
|
}
|
|
|
|
void PresShell::ContentStateChanged(nsIDocument* aDocument,
|
|
nsIContent* aContent,
|
|
EventStates aStateMask) {
|
|
MOZ_ASSERT(!mIsDocumentGone, "Unexpected ContentStateChanged");
|
|
MOZ_ASSERT(aDocument == mDocument, "Unexpected aDocument");
|
|
|
|
if (mDidInitialize) {
|
|
nsAutoCauseReflowNotifier crNotifier(this);
|
|
mPresContext->RestyleManager()->ContentStateChanged(aContent, aStateMask);
|
|
}
|
|
}
|
|
|
|
void PresShell::DocumentStatesChanged(nsIDocument* aDocument,
|
|
EventStates aStateMask) {
|
|
MOZ_ASSERT(!mIsDocumentGone, "Unexpected DocumentStatesChanged");
|
|
MOZ_ASSERT(aDocument == mDocument, "Unexpected aDocument");
|
|
MOZ_ASSERT(!aStateMask.IsEmpty());
|
|
|
|
if (mDidInitialize) {
|
|
mStyleSet->InvalidateStyleForDocumentStateChanges(aStateMask);
|
|
}
|
|
|
|
if (aStateMask.HasState(NS_DOCUMENT_STATE_WINDOW_INACTIVE)) {
|
|
if (nsIFrame* root = mFrameConstructor->GetRootFrame()) {
|
|
root->SchedulePaint();
|
|
}
|
|
}
|
|
}
|
|
|
|
void PresShell::AttributeWillChange(Element* aElement, int32_t aNameSpaceID,
|
|
nsAtom* aAttribute, int32_t aModType,
|
|
const nsAttrValue* aNewValue) {
|
|
MOZ_ASSERT(!mIsDocumentGone, "Unexpected AttributeWillChange");
|
|
MOZ_ASSERT(aElement->OwnerDoc() == mDocument, "Unexpected document");
|
|
|
|
// XXXwaterson it might be more elegant to wait until after the
|
|
// initial reflow to begin observing the document. That would
|
|
// squelch any other inappropriate notifications as well.
|
|
if (mDidInitialize) {
|
|
nsAutoCauseReflowNotifier crNotifier(this);
|
|
mPresContext->RestyleManager()->AttributeWillChange(
|
|
aElement, aNameSpaceID, aAttribute, aModType, aNewValue);
|
|
}
|
|
}
|
|
|
|
void PresShell::AttributeChanged(Element* aElement, int32_t aNameSpaceID,
|
|
nsAtom* aAttribute, int32_t aModType,
|
|
const nsAttrValue* aOldValue) {
|
|
MOZ_ASSERT(!mIsDocumentGone, "Unexpected AttributeChanged");
|
|
MOZ_ASSERT(aElement->OwnerDoc() == mDocument, "Unexpected document");
|
|
|
|
// XXXwaterson it might be more elegant to wait until after the
|
|
// initial reflow to begin observing the document. That would
|
|
// squelch any other inappropriate notifications as well.
|
|
if (mDidInitialize) {
|
|
nsAutoCauseReflowNotifier crNotifier(this);
|
|
mPresContext->RestyleManager()->AttributeChanged(
|
|
aElement, aNameSpaceID, aAttribute, aModType, aOldValue);
|
|
}
|
|
}
|
|
|
|
void PresShell::ContentAppended(nsIContent* aFirstNewContent) {
|
|
MOZ_ASSERT(!mIsDocumentGone, "Unexpected ContentAppended");
|
|
MOZ_ASSERT(aFirstNewContent->OwnerDoc() == mDocument, "Unexpected document");
|
|
|
|
// We never call ContentAppended with a document as the container, so we can
|
|
// assert that we have an nsIContent parent.
|
|
MOZ_ASSERT(aFirstNewContent->GetParent());
|
|
MOZ_ASSERT(aFirstNewContent->GetParent()->IsElement() ||
|
|
aFirstNewContent->GetParent()->IsShadowRoot());
|
|
|
|
if (!mDidInitialize) {
|
|
return;
|
|
}
|
|
|
|
nsAutoCauseReflowNotifier crNotifier(this);
|
|
|
|
// Call this here so it only happens for real content mutations and
|
|
// not cases when the frame constructor calls its own methods to force
|
|
// frame reconstruction.
|
|
mPresContext->RestyleManager()->ContentAppended(aFirstNewContent);
|
|
|
|
mFrameConstructor->ContentAppended(
|
|
aFirstNewContent, nsCSSFrameConstructor::InsertionKind::Async);
|
|
}
|
|
|
|
void PresShell::ContentInserted(nsIContent* aChild) {
|
|
MOZ_ASSERT(!mIsDocumentGone, "Unexpected ContentInserted");
|
|
MOZ_ASSERT(aChild->OwnerDoc() == mDocument, "Unexpected document");
|
|
|
|
if (!mDidInitialize) {
|
|
return;
|
|
}
|
|
|
|
nsAutoCauseReflowNotifier crNotifier(this);
|
|
|
|
// Call this here so it only happens for real content mutations and
|
|
// not cases when the frame constructor calls its own methods to force
|
|
// frame reconstruction.
|
|
mPresContext->RestyleManager()->ContentInserted(aChild);
|
|
|
|
mFrameConstructor->ContentInserted(
|
|
aChild, nullptr, nsCSSFrameConstructor::InsertionKind::Async);
|
|
}
|
|
|
|
void PresShell::ContentRemoved(nsIContent* aChild,
|
|
nsIContent* aPreviousSibling) {
|
|
MOZ_ASSERT(!mIsDocumentGone, "Unexpected ContentRemoved");
|
|
MOZ_ASSERT(aChild->OwnerDoc() == mDocument, "Unexpected document");
|
|
nsINode* container = aChild->GetParentNode();
|
|
|
|
// Notify the ESM that the content has been removed, so that
|
|
// it can clean up any state related to the content.
|
|
|
|
mPresContext->EventStateManager()->ContentRemoved(mDocument, aChild);
|
|
|
|
nsAutoCauseReflowNotifier crNotifier(this);
|
|
|
|
// Call this here so it only happens for real content mutations and
|
|
// not cases when the frame constructor calls its own methods to force
|
|
// frame reconstruction.
|
|
nsIContent* oldNextSibling = nullptr;
|
|
|
|
// Editor calls into here with NAC via HTMLEditor::DeleteRefToAnonymousNode.
|
|
// This could be asserted if that caller is fixed.
|
|
if (MOZ_LIKELY(!aChild->IsRootOfAnonymousSubtree())) {
|
|
oldNextSibling = aPreviousSibling ? aPreviousSibling->GetNextSibling()
|
|
: container->GetFirstChild();
|
|
}
|
|
|
|
// After removing aChild from tree we should save information about live
|
|
// ancestor
|
|
if (mPointerEventTarget &&
|
|
nsContentUtils::ContentIsDescendantOf(mPointerEventTarget, aChild)) {
|
|
mPointerEventTarget = aChild->GetParent();
|
|
}
|
|
|
|
mFrameConstructor->ContentRemoved(aChild, oldNextSibling,
|
|
nsCSSFrameConstructor::REMOVE_CONTENT);
|
|
|
|
// NOTE(emilio): It's important that this goes after the frame constructor
|
|
// stuff, otherwise the frame constructor can't see elements which are
|
|
// display: contents / display: none, because we'd have cleared all the style
|
|
// data from there.
|
|
mPresContext->RestyleManager()->ContentRemoved(aChild, oldNextSibling);
|
|
}
|
|
|
|
void PresShell::NotifyCounterStylesAreDirty() {
|
|
nsAutoCauseReflowNotifier reflowNotifier(this);
|
|
mFrameConstructor->NotifyCounterStylesAreDirty();
|
|
}
|
|
|
|
bool nsIPresShell::FrameIsAncestorOfDirtyRoot(nsIFrame* aFrame) const {
|
|
return mDirtyRoots.FrameIsAncestorOfDirtyRoot(aFrame);
|
|
}
|
|
|
|
void PresShell::ReconstructFrames() {
|
|
MOZ_ASSERT(!mFrameConstructor->GetRootFrame() || mDidInitialize,
|
|
"Must not have root frame before initial reflow");
|
|
if (!mDidInitialize || mIsDestroying) {
|
|
// Nothing to do here
|
|
return;
|
|
}
|
|
|
|
nsCOMPtr<nsIPresShell> kungFuDeathGrip(this);
|
|
|
|
// Have to make sure that the content notifications are flushed before we
|
|
// start messing with the frame model; otherwise we can get content doubling.
|
|
//
|
|
// Also make sure that styles are flushed before calling into the frame
|
|
// constructor, since that's what it expects.
|
|
mDocument->FlushPendingNotifications(FlushType::Style);
|
|
|
|
if (mIsDestroying) {
|
|
return;
|
|
}
|
|
|
|
nsAutoCauseReflowNotifier crNotifier(this);
|
|
mFrameConstructor->ReconstructDocElementHierarchy(
|
|
nsCSSFrameConstructor::InsertionKind::Sync);
|
|
}
|
|
|
|
void nsIPresShell::ApplicableStylesChanged() {
|
|
if (mIsDestroying) {
|
|
// We don't want to mess with restyles at this point
|
|
return;
|
|
}
|
|
|
|
EnsureStyleFlush();
|
|
mDocument->MarkUserFontSetDirty();
|
|
|
|
if (mPresContext) {
|
|
mPresContext->MarkCounterStylesDirty();
|
|
mPresContext->MarkFontFeatureValuesDirty();
|
|
mPresContext->RestyleManager()->NextRestyleIsForCSSRuleChanges();
|
|
}
|
|
}
|
|
|
|
nsresult PresShell::RenderDocument(const nsRect& aRect, uint32_t aFlags,
|
|
nscolor aBackgroundColor,
|
|
gfxContext* aThebesContext) {
|
|
NS_ENSURE_TRUE(!(aFlags & RENDER_IS_UNTRUSTED), NS_ERROR_NOT_IMPLEMENTED);
|
|
|
|
nsRootPresContext* rootPresContext = mPresContext->GetRootPresContext();
|
|
if (rootPresContext) {
|
|
rootPresContext->FlushWillPaintObservers();
|
|
if (mIsDestroying) return NS_OK;
|
|
}
|
|
|
|
nsAutoScriptBlocker blockScripts;
|
|
|
|
// Set up the rectangle as the path in aThebesContext
|
|
gfxRect r(0, 0, nsPresContext::AppUnitsToFloatCSSPixels(aRect.width),
|
|
nsPresContext::AppUnitsToFloatCSSPixels(aRect.height));
|
|
aThebesContext->NewPath();
|
|
#ifdef MOZ_GFX_OPTIMIZE_MOBILE
|
|
aThebesContext->SnappedRectangle(r);
|
|
#else
|
|
aThebesContext->Rectangle(r);
|
|
#endif
|
|
|
|
nsIFrame* rootFrame = mFrameConstructor->GetRootFrame();
|
|
if (!rootFrame) {
|
|
// Nothing to paint, just fill the rect
|
|
aThebesContext->SetColor(Color::FromABGR(aBackgroundColor));
|
|
aThebesContext->Fill();
|
|
return NS_OK;
|
|
}
|
|
|
|
gfxContextAutoSaveRestore save(aThebesContext);
|
|
|
|
MOZ_ASSERT(aThebesContext->CurrentOp() == CompositionOp::OP_OVER);
|
|
|
|
aThebesContext->Clip();
|
|
|
|
nsDeviceContext* devCtx = mPresContext->DeviceContext();
|
|
|
|
gfxPoint offset(-nsPresContext::AppUnitsToFloatCSSPixels(aRect.x),
|
|
-nsPresContext::AppUnitsToFloatCSSPixels(aRect.y));
|
|
gfxFloat scale =
|
|
gfxFloat(devCtx->AppUnitsPerDevPixel()) / AppUnitsPerCSSPixel();
|
|
|
|
// Since canvas APIs use floats to set up their matrices, we may have some
|
|
// slight rounding errors here. We use NudgeToIntegers() here to adjust
|
|
// matrix components that are integers up to the accuracy of floats to be
|
|
// those integers.
|
|
gfxMatrix newTM = aThebesContext->CurrentMatrixDouble()
|
|
.PreTranslate(offset)
|
|
.PreScale(scale, scale)
|
|
.NudgeToIntegers();
|
|
aThebesContext->SetMatrixDouble(newTM);
|
|
|
|
AutoSaveRestoreRenderingState _(this);
|
|
|
|
bool wouldFlushRetainedLayers = false;
|
|
PaintFrameFlags flags = PaintFrameFlags::PAINT_IGNORE_SUPPRESSION;
|
|
if (aThebesContext->CurrentMatrix().HasNonIntegerTranslation()) {
|
|
flags |= PaintFrameFlags::PAINT_IN_TRANSFORM;
|
|
}
|
|
if (!(aFlags & RENDER_ASYNC_DECODE_IMAGES)) {
|
|
flags |= PaintFrameFlags::PAINT_SYNC_DECODE_IMAGES;
|
|
}
|
|
if (aFlags & RENDER_USE_WIDGET_LAYERS) {
|
|
// We only support using widget layers on display root's with widgets.
|
|
nsView* view = rootFrame->GetView();
|
|
if (view && view->GetWidget() &&
|
|
nsLayoutUtils::GetDisplayRootFrame(rootFrame) == rootFrame) {
|
|
LayerManager* layerManager = view->GetWidget()->GetLayerManager();
|
|
// ClientLayerManagers or WebRenderLayerManagers in content processes
|
|
// don't support taking snapshots.
|
|
if (layerManager &&
|
|
(!layerManager->AsKnowsCompositor() || XRE_IsParentProcess())) {
|
|
flags |= PaintFrameFlags::PAINT_WIDGET_LAYERS;
|
|
}
|
|
}
|
|
}
|
|
if (!(aFlags & RENDER_CARET)) {
|
|
wouldFlushRetainedLayers = true;
|
|
flags |= PaintFrameFlags::PAINT_HIDE_CARET;
|
|
}
|
|
if (aFlags & RENDER_IGNORE_VIEWPORT_SCROLLING) {
|
|
wouldFlushRetainedLayers = !IgnoringViewportScrolling();
|
|
mRenderFlags =
|
|
ChangeFlag(mRenderFlags, true, STATE_IGNORING_VIEWPORT_SCROLLING);
|
|
}
|
|
if (aFlags & RENDER_DRAWWINDOW_NOT_FLUSHING) {
|
|
mRenderFlags =
|
|
ChangeFlag(mRenderFlags, true, STATE_DRAWWINDOW_NOT_FLUSHING);
|
|
}
|
|
if (aFlags & RENDER_DOCUMENT_RELATIVE) {
|
|
// XXX be smarter about this ... drawWindow might want a rect
|
|
// that's "pretty close" to what our retained layer tree covers.
|
|
// In that case, it wouldn't disturb normal rendering too much,
|
|
// and we should allow it.
|
|
wouldFlushRetainedLayers = true;
|
|
flags |= PaintFrameFlags::PAINT_DOCUMENT_RELATIVE;
|
|
}
|
|
|
|
// Don't let drawWindow blow away our retained layer tree
|
|
if ((flags & PaintFrameFlags::PAINT_WIDGET_LAYERS) &&
|
|
wouldFlushRetainedLayers) {
|
|
flags &= ~PaintFrameFlags::PAINT_WIDGET_LAYERS;
|
|
}
|
|
|
|
nsLayoutUtils::PaintFrame(aThebesContext, rootFrame, nsRegion(aRect),
|
|
aBackgroundColor,
|
|
nsDisplayListBuilderMode::PAINTING, flags);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
/*
|
|
* Clip the display list aList to a range. Returns the clipped
|
|
* rectangle surrounding the range.
|
|
*/
|
|
nsRect PresShell::ClipListToRange(nsDisplayListBuilder* aBuilder,
|
|
nsDisplayList* aList, nsRange* aRange) {
|
|
// iterate though the display items and add up the bounding boxes of each.
|
|
// This will allow the total area of the frames within the range to be
|
|
// determined. To do this, remove an item from the bottom of the list, check
|
|
// whether it should be part of the range, and if so, append it to the top
|
|
// of the temporary list tmpList. If the item is a text frame at the end of
|
|
// the selection range, clip it to the portion of the text frame that is
|
|
// part of the selection. Then, append the wrapper to the top of the list.
|
|
// Otherwise, just delete the item and don't append it.
|
|
nsRect surfaceRect;
|
|
nsDisplayList tmpList;
|
|
|
|
nsDisplayItem* i;
|
|
while ((i = aList->RemoveBottom())) {
|
|
// itemToInsert indiciates the item that should be inserted into the
|
|
// temporary list. If null, no item should be inserted.
|
|
nsDisplayItem* itemToInsert = nullptr;
|
|
nsIFrame* frame = i->Frame();
|
|
nsIContent* content = frame->GetContent();
|
|
if (content) {
|
|
bool atStart = (content == aRange->GetStartContainer());
|
|
bool atEnd = (content == aRange->GetEndContainer());
|
|
if ((atStart || atEnd) && frame->IsTextFrame()) {
|
|
int32_t frameStartOffset, frameEndOffset;
|
|
frame->GetOffsets(frameStartOffset, frameEndOffset);
|
|
|
|
int32_t hilightStart =
|
|
atStart ? std::max(static_cast<int32_t>(aRange->StartOffset()),
|
|
frameStartOffset)
|
|
: frameStartOffset;
|
|
int32_t hilightEnd =
|
|
atEnd ? std::min(static_cast<int32_t>(aRange->EndOffset()),
|
|
frameEndOffset)
|
|
: frameEndOffset;
|
|
if (hilightStart < hilightEnd) {
|
|
// determine the location of the start and end edges of the range.
|
|
nsPoint startPoint, endPoint;
|
|
frame->GetPointFromOffset(hilightStart, &startPoint);
|
|
frame->GetPointFromOffset(hilightEnd, &endPoint);
|
|
|
|
// The clip rectangle is determined by taking the the start and
|
|
// end points of the range, offset from the reference frame.
|
|
// Because of rtl, the end point may be to the left of (or above,
|
|
// in vertical mode) the start point, so x (or y) is set to the
|
|
// lower of the values.
|
|
nsRect textRect(aBuilder->ToReferenceFrame(frame), frame->GetSize());
|
|
if (frame->GetWritingMode().IsVertical()) {
|
|
nscoord y = std::min(startPoint.y, endPoint.y);
|
|
textRect.y += y;
|
|
textRect.height = std::max(startPoint.y, endPoint.y) - y;
|
|
} else {
|
|
nscoord x = std::min(startPoint.x, endPoint.x);
|
|
textRect.x += x;
|
|
textRect.width = std::max(startPoint.x, endPoint.x) - x;
|
|
}
|
|
surfaceRect.UnionRect(surfaceRect, textRect);
|
|
|
|
const ActiveScrolledRoot* asr = i->GetActiveScrolledRoot();
|
|
|
|
DisplayItemClip newClip;
|
|
newClip.SetTo(textRect);
|
|
|
|
const DisplayItemClipChain* newClipChain =
|
|
aBuilder->AllocateDisplayItemClipChain(newClip, asr, nullptr);
|
|
|
|
i->IntersectClip(aBuilder, newClipChain, true);
|
|
itemToInsert = i;
|
|
}
|
|
}
|
|
// Don't try to descend into subdocuments.
|
|
// If this ever changes we'd need to add handling for subdocuments with
|
|
// different zoom levels.
|
|
else if (content->GetUncomposedDoc() ==
|
|
aRange->GetStartContainer()->GetUncomposedDoc()) {
|
|
// if the node is within the range, append it to the temporary list
|
|
bool before, after;
|
|
nsresult rv =
|
|
nsRange::CompareNodeToRange(content, aRange, &before, &after);
|
|
if (NS_SUCCEEDED(rv) && !before && !after) {
|
|
itemToInsert = i;
|
|
bool snap;
|
|
surfaceRect.UnionRect(surfaceRect, i->GetBounds(aBuilder, &snap));
|
|
}
|
|
}
|
|
}
|
|
|
|
// insert the item into the list if necessary. If the item has a child
|
|
// list, insert that as well
|
|
nsDisplayList* sublist = i->GetSameCoordinateSystemChildren();
|
|
if (itemToInsert || sublist) {
|
|
tmpList.AppendToTop(itemToInsert ? itemToInsert : i);
|
|
// if the item is a list, iterate over it as well
|
|
if (sublist)
|
|
surfaceRect.UnionRect(surfaceRect,
|
|
ClipListToRange(aBuilder, sublist, aRange));
|
|
} else {
|
|
// otherwise, just delete the item and don't readd it to the list
|
|
i->Destroy(aBuilder);
|
|
}
|
|
}
|
|
|
|
// now add all the items back onto the original list again
|
|
aList->AppendToTop(&tmpList);
|
|
|
|
return surfaceRect;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
#include <stdio.h>
|
|
|
|
static bool gDumpRangePaintList = false;
|
|
#endif
|
|
|
|
UniquePtr<RangePaintInfo> PresShell::CreateRangePaintInfo(
|
|
nsRange* aRange, nsRect& aSurfaceRect, bool aForPrimarySelection) {
|
|
nsIFrame* ancestorFrame;
|
|
nsIFrame* rootFrame = GetRootFrame();
|
|
|
|
// If the start or end of the range is the document, just use the root
|
|
// frame, otherwise get the common ancestor of the two endpoints of the
|
|
// range.
|
|
nsINode* startContainer = aRange->GetStartContainer();
|
|
nsINode* endContainer = aRange->GetEndContainer();
|
|
nsIDocument* doc = startContainer->GetComposedDoc();
|
|
if (startContainer == doc || endContainer == doc) {
|
|
ancestorFrame = rootFrame;
|
|
} else {
|
|
nsINode* ancestor =
|
|
nsContentUtils::GetCommonAncestor(startContainer, endContainer);
|
|
NS_ASSERTION(!ancestor || ancestor->IsContent(),
|
|
"common ancestor is not content");
|
|
if (!ancestor || !ancestor->IsContent()) return nullptr;
|
|
|
|
ancestorFrame = ancestor->AsContent()->GetPrimaryFrame();
|
|
|
|
// XXX deal with ancestorFrame being null due to display:contents
|
|
|
|
// use the nearest ancestor frame that includes all continuations as the
|
|
// root for building the display list
|
|
while (ancestorFrame &&
|
|
nsLayoutUtils::GetNextContinuationOrIBSplitSibling(ancestorFrame))
|
|
ancestorFrame = ancestorFrame->GetParent();
|
|
}
|
|
|
|
if (!ancestorFrame) {
|
|
return nullptr;
|
|
}
|
|
|
|
// get a display list containing the range
|
|
auto info = MakeUnique<RangePaintInfo>(aRange, ancestorFrame);
|
|
info->mBuilder.SetIncludeAllOutOfFlows();
|
|
if (aForPrimarySelection) {
|
|
info->mBuilder.SetSelectedFramesOnly();
|
|
}
|
|
info->mBuilder.EnterPresShell(ancestorFrame);
|
|
|
|
nsCOMPtr<nsIContentIterator> iter = NS_NewContentSubtreeIterator();
|
|
nsresult rv = iter->Init(aRange);
|
|
if (NS_FAILED(rv)) {
|
|
return nullptr;
|
|
}
|
|
|
|
auto BuildDisplayListForNode = [&](nsINode* aNode) {
|
|
if (MOZ_UNLIKELY(!aNode->IsContent())) {
|
|
return;
|
|
}
|
|
nsIFrame* frame = aNode->AsContent()->GetPrimaryFrame();
|
|
// XXX deal with frame being null due to display:contents
|
|
for (; frame;
|
|
frame = nsLayoutUtils::GetNextContinuationOrIBSplitSibling(frame)) {
|
|
info->mBuilder.SetVisibleRect(frame->GetVisualOverflowRect());
|
|
info->mBuilder.SetDirtyRect(frame->GetVisualOverflowRect());
|
|
frame->BuildDisplayListForStackingContext(&info->mBuilder, &info->mList);
|
|
}
|
|
};
|
|
if (startContainer->NodeType() == nsINode::TEXT_NODE) {
|
|
BuildDisplayListForNode(startContainer);
|
|
}
|
|
for (; !iter->IsDone(); iter->Next()) {
|
|
nsCOMPtr<nsINode> node = iter->GetCurrentNode();
|
|
BuildDisplayListForNode(node);
|
|
}
|
|
if (endContainer != startContainer &&
|
|
endContainer->NodeType() == nsINode::TEXT_NODE) {
|
|
BuildDisplayListForNode(endContainer);
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
if (gDumpRangePaintList) {
|
|
fprintf(stderr, "CreateRangePaintInfo --- before ClipListToRange:\n");
|
|
nsFrame::PrintDisplayList(&(info->mBuilder), info->mList);
|
|
}
|
|
#endif
|
|
|
|
nsRect rangeRect = ClipListToRange(&info->mBuilder, &info->mList, aRange);
|
|
|
|
info->mBuilder.LeavePresShell(ancestorFrame, &info->mList);
|
|
|
|
#ifdef DEBUG
|
|
if (gDumpRangePaintList) {
|
|
fprintf(stderr, "CreateRangePaintInfo --- after ClipListToRange:\n");
|
|
nsFrame::PrintDisplayList(&(info->mBuilder), info->mList);
|
|
}
|
|
#endif
|
|
|
|
// determine the offset of the reference frame for the display list
|
|
// to the root frame. This will allow the coordinates used when painting
|
|
// to all be offset from the same point
|
|
info->mRootOffset = ancestorFrame->GetOffsetTo(rootFrame);
|
|
rangeRect.MoveBy(info->mRootOffset);
|
|
aSurfaceRect.UnionRect(aSurfaceRect, rangeRect);
|
|
|
|
return info;
|
|
}
|
|
|
|
already_AddRefed<SourceSurface> PresShell::PaintRangePaintInfo(
|
|
const nsTArray<UniquePtr<RangePaintInfo>>& aItems, Selection* aSelection,
|
|
const Maybe<CSSIntRegion>& aRegion, nsRect aArea,
|
|
const LayoutDeviceIntPoint aPoint, LayoutDeviceIntRect* aScreenRect,
|
|
uint32_t aFlags) {
|
|
nsPresContext* pc = GetPresContext();
|
|
if (!pc || aArea.width == 0 || aArea.height == 0) return nullptr;
|
|
|
|
// use the rectangle to create the surface
|
|
nsIntRect pixelArea = aArea.ToOutsidePixels(pc->AppUnitsPerDevPixel());
|
|
|
|
// if the image should not be resized, scale must be 1
|
|
float scale = 1.0;
|
|
nsIntRect rootScreenRect =
|
|
GetRootFrame()->GetScreenRectInAppUnits().ToNearestPixels(
|
|
pc->AppUnitsPerDevPixel());
|
|
|
|
nsRect maxSize;
|
|
pc->DeviceContext()->GetClientRect(maxSize);
|
|
|
|
// check if the image should be resized
|
|
bool resize = aFlags & RENDER_AUTO_SCALE;
|
|
|
|
if (resize) {
|
|
// check if image-resizing-algorithm should be used
|
|
if (aFlags & RENDER_IS_IMAGE) {
|
|
// get max screensize
|
|
nscoord maxWidth = pc->AppUnitsToDevPixels(maxSize.width);
|
|
nscoord maxHeight = pc->AppUnitsToDevPixels(maxSize.height);
|
|
// resize image relative to the screensize
|
|
// get best height/width relative to screensize
|
|
float bestHeight = float(maxHeight) * RELATIVE_SCALEFACTOR;
|
|
float bestWidth = float(maxWidth) * RELATIVE_SCALEFACTOR;
|
|
// calculate scale for bestWidth
|
|
float adjustedScale = bestWidth / float(pixelArea.width);
|
|
// get the worst height (height when width is perfect)
|
|
float worstHeight = float(pixelArea.height) * adjustedScale;
|
|
// get the difference of best and worst height
|
|
float difference = bestHeight - worstHeight;
|
|
// halve the difference and add it to worstHeight to get
|
|
// the best compromise between bestHeight and bestWidth,
|
|
// then calculate the corresponding scale factor
|
|
adjustedScale = (worstHeight + difference / 2) / float(pixelArea.height);
|
|
// prevent upscaling
|
|
scale = std::min(scale, adjustedScale);
|
|
} else {
|
|
// get half of max screensize
|
|
nscoord maxWidth = pc->AppUnitsToDevPixels(maxSize.width >> 1);
|
|
nscoord maxHeight = pc->AppUnitsToDevPixels(maxSize.height >> 1);
|
|
if (pixelArea.width > maxWidth || pixelArea.height > maxHeight) {
|
|
// divide the maximum size by the image size in both directions.
|
|
// Whichever direction produces the smallest result determines how much
|
|
// should be scaled.
|
|
if (pixelArea.width > maxWidth)
|
|
scale = std::min(scale, float(maxWidth) / pixelArea.width);
|
|
if (pixelArea.height > maxHeight)
|
|
scale = std::min(scale, float(maxHeight) / pixelArea.height);
|
|
}
|
|
}
|
|
|
|
pixelArea.width = NSToIntFloor(float(pixelArea.width) * scale);
|
|
pixelArea.height = NSToIntFloor(float(pixelArea.height) * scale);
|
|
if (!pixelArea.width || !pixelArea.height) return nullptr;
|
|
|
|
// adjust the screen position based on the rescaled size
|
|
nscoord left = rootScreenRect.x + pixelArea.x;
|
|
nscoord top = rootScreenRect.y + pixelArea.y;
|
|
aScreenRect->x = NSToIntFloor(aPoint.x - float(aPoint.x - left) * scale);
|
|
aScreenRect->y = NSToIntFloor(aPoint.y - float(aPoint.y - top) * scale);
|
|
} else {
|
|
// move aScreenRect to the position of the surface in screen coordinates
|
|
aScreenRect->MoveTo(rootScreenRect.x + pixelArea.x,
|
|
rootScreenRect.y + pixelArea.y);
|
|
}
|
|
aScreenRect->width = pixelArea.width;
|
|
aScreenRect->height = pixelArea.height;
|
|
|
|
RefPtr<DrawTarget> dt =
|
|
gfxPlatform::GetPlatform()->CreateOffscreenContentDrawTarget(
|
|
IntSize(pixelArea.width, pixelArea.height), SurfaceFormat::B8G8R8A8);
|
|
if (!dt || !dt->IsValid()) {
|
|
return nullptr;
|
|
}
|
|
|
|
RefPtr<gfxContext> ctx = gfxContext::CreateOrNull(dt);
|
|
MOZ_ASSERT(ctx); // already checked the draw target above
|
|
|
|
if (aRegion) {
|
|
RefPtr<PathBuilder> builder = dt->CreatePathBuilder(FillRule::FILL_WINDING);
|
|
|
|
// Convert aRegion from CSS pixels to dev pixels
|
|
nsIntRegion region = aRegion->ToAppUnits(AppUnitsPerCSSPixel())
|
|
.ToOutsidePixels(pc->AppUnitsPerDevPixel());
|
|
for (auto iter = region.RectIter(); !iter.Done(); iter.Next()) {
|
|
const IntRect& rect = iter.Get();
|
|
|
|
builder->MoveTo(rect.TopLeft());
|
|
builder->LineTo(rect.TopRight());
|
|
builder->LineTo(rect.BottomRight());
|
|
builder->LineTo(rect.BottomLeft());
|
|
builder->LineTo(rect.TopLeft());
|
|
}
|
|
|
|
RefPtr<Path> path = builder->Finish();
|
|
ctx->Clip(path);
|
|
}
|
|
|
|
gfxMatrix initialTM = ctx->CurrentMatrixDouble();
|
|
|
|
if (resize) initialTM.PreScale(scale, scale);
|
|
|
|
// translate so that points are relative to the surface area
|
|
gfxPoint surfaceOffset = nsLayoutUtils::PointToGfxPoint(
|
|
-aArea.TopLeft(), pc->AppUnitsPerDevPixel());
|
|
initialTM.PreTranslate(surfaceOffset);
|
|
|
|
// temporarily hide the selection so that text is drawn normally. If a
|
|
// selection is being rendered, use that, otherwise use the presshell's
|
|
// selection.
|
|
RefPtr<nsFrameSelection> frameSelection;
|
|
if (aSelection) {
|
|
frameSelection = aSelection->GetFrameSelection();
|
|
} else {
|
|
frameSelection = FrameSelection();
|
|
}
|
|
int16_t oldDisplaySelection = frameSelection->GetDisplaySelection();
|
|
frameSelection->SetDisplaySelection(nsISelectionController::SELECTION_HIDDEN);
|
|
|
|
// next, paint each range in the selection
|
|
for (const UniquePtr<RangePaintInfo>& rangeInfo : aItems) {
|
|
// the display lists paint relative to the offset from the reference
|
|
// frame, so account for that translation too:
|
|
gfxPoint rootOffset = nsLayoutUtils::PointToGfxPoint(
|
|
rangeInfo->mRootOffset, pc->AppUnitsPerDevPixel());
|
|
ctx->SetMatrixDouble(initialTM.PreTranslate(rootOffset));
|
|
aArea.MoveBy(-rangeInfo->mRootOffset.x, -rangeInfo->mRootOffset.y);
|
|
nsRegion visible(aArea);
|
|
RefPtr<LayerManager> layerManager = rangeInfo->mList.PaintRoot(
|
|
&rangeInfo->mBuilder, ctx, nsDisplayList::PAINT_DEFAULT);
|
|
aArea.MoveBy(rangeInfo->mRootOffset.x, rangeInfo->mRootOffset.y);
|
|
}
|
|
|
|
// restore the old selection display state
|
|
frameSelection->SetDisplaySelection(oldDisplaySelection);
|
|
|
|
return dt->Snapshot();
|
|
}
|
|
|
|
already_AddRefed<SourceSurface> PresShell::RenderNode(
|
|
nsINode* aNode, const Maybe<CSSIntRegion>& aRegion,
|
|
const LayoutDeviceIntPoint aPoint, LayoutDeviceIntRect* aScreenRect,
|
|
uint32_t aFlags) {
|
|
// area will hold the size of the surface needed to draw the node, measured
|
|
// from the root frame.
|
|
nsRect area;
|
|
nsTArray<UniquePtr<RangePaintInfo>> rangeItems;
|
|
|
|
// nothing to draw if the node isn't in a document
|
|
if (!aNode->IsInComposedDoc()) {
|
|
return nullptr;
|
|
}
|
|
|
|
RefPtr<nsRange> range = new nsRange(aNode);
|
|
IgnoredErrorResult rv;
|
|
range->SelectNode(*aNode, rv);
|
|
if (rv.Failed()) {
|
|
return nullptr;
|
|
}
|
|
|
|
UniquePtr<RangePaintInfo> info = CreateRangePaintInfo(range, area, false);
|
|
if (info && !rangeItems.AppendElement(std::move(info))) {
|
|
return nullptr;
|
|
}
|
|
|
|
Maybe<CSSIntRegion> region = aRegion;
|
|
if (region) {
|
|
// combine the area with the supplied region
|
|
CSSIntRect rrectPixels = region->GetBounds();
|
|
|
|
nsRect rrect = ToAppUnits(rrectPixels, AppUnitsPerCSSPixel());
|
|
area.IntersectRect(area, rrect);
|
|
|
|
nsPresContext* pc = GetPresContext();
|
|
if (!pc) return nullptr;
|
|
|
|
// move the region so that it is offset from the topleft corner of the
|
|
// surface
|
|
region->MoveBy(-nsPresContext::AppUnitsToIntCSSPixels(area.x),
|
|
-nsPresContext::AppUnitsToIntCSSPixels(area.y));
|
|
}
|
|
|
|
return PaintRangePaintInfo(rangeItems, nullptr, region, area, aPoint,
|
|
aScreenRect, aFlags);
|
|
}
|
|
|
|
already_AddRefed<SourceSurface> PresShell::RenderSelection(
|
|
Selection* aSelection, const LayoutDeviceIntPoint aPoint,
|
|
LayoutDeviceIntRect* aScreenRect, uint32_t aFlags) {
|
|
// area will hold the size of the surface needed to draw the selection,
|
|
// measured from the root frame.
|
|
nsRect area;
|
|
nsTArray<UniquePtr<RangePaintInfo>> rangeItems;
|
|
|
|
// iterate over each range and collect them into the rangeItems array.
|
|
// This is done so that the size of selection can be determined so as
|
|
// to allocate a surface area
|
|
uint32_t numRanges = aSelection->RangeCount();
|
|
NS_ASSERTION(numRanges > 0, "RenderSelection called with no selection");
|
|
|
|
for (uint32_t r = 0; r < numRanges; r++) {
|
|
RefPtr<nsRange> range = aSelection->GetRangeAt(r);
|
|
|
|
UniquePtr<RangePaintInfo> info = CreateRangePaintInfo(range, area, true);
|
|
if (info && !rangeItems.AppendElement(std::move(info))) {
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
return PaintRangePaintInfo(rangeItems, aSelection, Nothing(), area, aPoint,
|
|
aScreenRect, aFlags);
|
|
}
|
|
|
|
void PresShell::AddPrintPreviewBackgroundItem(nsDisplayListBuilder& aBuilder,
|
|
nsDisplayList& aList,
|
|
nsIFrame* aFrame,
|
|
const nsRect& aBounds) {
|
|
aList.AppendToBottom(MakeDisplayItem<nsDisplaySolidColor>(
|
|
&aBuilder, aFrame, aBounds, NS_RGB(115, 115, 115)));
|
|
}
|
|
|
|
static bool AddCanvasBackgroundColor(const nsDisplayList& aList,
|
|
nsIFrame* aCanvasFrame, nscolor aColor,
|
|
bool aCSSBackgroundColor) {
|
|
for (nsDisplayItem* i = aList.GetBottom(); i; i = i->GetAbove()) {
|
|
const DisplayItemType type = i->GetType();
|
|
|
|
if (i->Frame() == aCanvasFrame &&
|
|
type == DisplayItemType::TYPE_CANVAS_BACKGROUND_COLOR) {
|
|
nsDisplayCanvasBackgroundColor* bg =
|
|
static_cast<nsDisplayCanvasBackgroundColor*>(i);
|
|
bg->SetExtraBackgroundColor(aColor);
|
|
return true;
|
|
}
|
|
|
|
const bool isBlendContainer =
|
|
type == DisplayItemType::TYPE_BLEND_CONTAINER ||
|
|
type == DisplayItemType::TYPE_TABLE_BLEND_CONTAINER;
|
|
|
|
nsDisplayList* sublist = i->GetSameCoordinateSystemChildren();
|
|
if (sublist && !(isBlendContainer && !aCSSBackgroundColor) &&
|
|
AddCanvasBackgroundColor(*sublist, aCanvasFrame, aColor,
|
|
aCSSBackgroundColor))
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void PresShell::AddCanvasBackgroundColorItem(
|
|
nsDisplayListBuilder& aBuilder, nsDisplayList& aList, nsIFrame* aFrame,
|
|
const nsRect& aBounds, nscolor aBackstopColor, uint32_t aFlags) {
|
|
if (aBounds.IsEmpty()) {
|
|
return;
|
|
}
|
|
// We don't want to add an item for the canvas background color if the frame
|
|
// (sub)tree we are painting doesn't include any canvas frames. There isn't
|
|
// an easy way to check this directly, but if we check if the root of the
|
|
// (sub)tree we are painting is a canvas frame that should cover us in all
|
|
// cases (it will usually be a viewport frame when we have a canvas frame in
|
|
// the (sub)tree).
|
|
if (!(aFlags & nsIPresShell::FORCE_DRAW) &&
|
|
!nsCSSRendering::IsCanvasFrame(aFrame)) {
|
|
return;
|
|
}
|
|
|
|
nscolor bgcolor = NS_ComposeColors(aBackstopColor, mCanvasBackgroundColor);
|
|
if (NS_GET_A(bgcolor) == 0) return;
|
|
|
|
// To make layers work better, we want to avoid having a big non-scrolled
|
|
// color background behind a scrolled transparent background. Instead,
|
|
// we'll try to move the color background into the scrolled content
|
|
// by making nsDisplayCanvasBackground paint it.
|
|
// If we're only adding an unscrolled item, then pretend that we've
|
|
// already done it.
|
|
bool addedScrollingBackgroundColor = (aFlags & APPEND_UNSCROLLED_ONLY);
|
|
if (!aFrame->GetParent() && !addedScrollingBackgroundColor) {
|
|
nsIScrollableFrame* sf =
|
|
aFrame->PresShell()->GetRootScrollFrameAsScrollable();
|
|
if (sf) {
|
|
nsCanvasFrame* canvasFrame = do_QueryFrame(sf->GetScrolledFrame());
|
|
if (canvasFrame && canvasFrame->IsVisibleForPainting()) {
|
|
addedScrollingBackgroundColor = AddCanvasBackgroundColor(
|
|
aList, canvasFrame, bgcolor, mHasCSSBackgroundColor);
|
|
}
|
|
}
|
|
}
|
|
|
|
// With async scrolling, we'd like to have two instances of the background
|
|
// color: one that scrolls with the content (for the reasons stated above),
|
|
// and one underneath which does not scroll with the content, but which can
|
|
// be shown during checkerboarding and overscroll.
|
|
// We can only do that if the color is opaque.
|
|
bool forceUnscrolledItem =
|
|
nsLayoutUtils::UsesAsyncScrolling(aFrame) && NS_GET_A(bgcolor) == 255;
|
|
if ((aFlags & ADD_FOR_SUBDOC) &&
|
|
gfxPrefs::LayoutUseContainersForRootFrames()) {
|
|
// If we're using ContainerLayers for a subdoc, then any items we add here
|
|
// will still be scrolled (since we're inside the container at this point),
|
|
// so don't bother and we will do it manually later.
|
|
forceUnscrolledItem = false;
|
|
}
|
|
|
|
if (!addedScrollingBackgroundColor || forceUnscrolledItem) {
|
|
aList.AppendToBottom(MakeDisplayItem<nsDisplaySolidColor>(
|
|
&aBuilder, aFrame, aBounds, bgcolor));
|
|
}
|
|
}
|
|
|
|
static bool IsTransparentContainerElement(nsPresContext* aPresContext) {
|
|
nsCOMPtr<nsIDocShell> docShell = aPresContext->GetDocShell();
|
|
if (!docShell) {
|
|
return false;
|
|
}
|
|
|
|
nsCOMPtr<nsPIDOMWindowOuter> pwin = docShell->GetWindow();
|
|
if (!pwin) return false;
|
|
nsCOMPtr<Element> containerElement = pwin->GetFrameElementInternal();
|
|
|
|
TabChild* tab = TabChild::GetFrom(docShell);
|
|
if (tab) {
|
|
// Check if presShell is the top PresShell. Only the top can
|
|
// influence the canvas background color.
|
|
nsCOMPtr<nsIPresShell> presShell = aPresContext->GetPresShell();
|
|
nsCOMPtr<nsIPresShell> topPresShell = tab->GetPresShell();
|
|
if (presShell != topPresShell) {
|
|
tab = nullptr;
|
|
}
|
|
}
|
|
|
|
return (containerElement && containerElement->HasAttr(
|
|
kNameSpaceID_None, nsGkAtoms::transparent)) ||
|
|
(tab && tab->IsTransparent());
|
|
}
|
|
|
|
nscolor PresShell::GetDefaultBackgroundColorToDraw() {
|
|
if (!mPresContext || !mPresContext->GetBackgroundColorDraw()) {
|
|
return NS_RGB(255, 255, 255);
|
|
}
|
|
return mPresContext->DefaultBackgroundColor();
|
|
}
|
|
|
|
void PresShell::UpdateCanvasBackground() {
|
|
// If we have a frame tree and it has style information that
|
|
// specifies the background color of the canvas, update our local
|
|
// cache of that color.
|
|
nsIFrame* rootStyleFrame = FrameConstructor()->GetRootElementStyleFrame();
|
|
if (rootStyleFrame) {
|
|
ComputedStyle* bgStyle =
|
|
nsCSSRendering::FindRootFrameBackground(rootStyleFrame);
|
|
// XXX We should really be passing the canvasframe, not the root element
|
|
// style frame but we don't have access to the canvasframe here. It isn't
|
|
// a problem because only a few frames can return something other than true
|
|
// and none of them would be a canvas frame or root element style frame.
|
|
bool drawBackgroundImage;
|
|
bool drawBackgroundColor;
|
|
mCanvasBackgroundColor = nsCSSRendering::DetermineBackgroundColor(
|
|
mPresContext, bgStyle, rootStyleFrame, drawBackgroundImage,
|
|
drawBackgroundColor);
|
|
mHasCSSBackgroundColor = drawBackgroundColor;
|
|
if (mPresContext->IsRootContentDocument() &&
|
|
!IsTransparentContainerElement(mPresContext)) {
|
|
mCanvasBackgroundColor = NS_ComposeColors(
|
|
GetDefaultBackgroundColorToDraw(), mCanvasBackgroundColor);
|
|
}
|
|
}
|
|
|
|
// If the root element of the document (ie html) has style 'display: none'
|
|
// then the document's background color does not get drawn; cache the
|
|
// color we actually draw.
|
|
if (!FrameConstructor()->GetRootElementFrame()) {
|
|
mCanvasBackgroundColor = GetDefaultBackgroundColorToDraw();
|
|
}
|
|
}
|
|
|
|
nscolor PresShell::ComputeBackstopColor(nsView* aDisplayRoot) {
|
|
nsIWidget* widget = aDisplayRoot->GetWidget();
|
|
if (widget && (widget->GetTransparencyMode() != eTransparencyOpaque ||
|
|
widget->WidgetPaintsBackground())) {
|
|
// Within a transparent widget, so the backstop color must be
|
|
// totally transparent.
|
|
return NS_RGBA(0, 0, 0, 0);
|
|
}
|
|
// Within an opaque widget (or no widget at all), so the backstop
|
|
// color must be totally opaque. The user's default background
|
|
// as reported by the prescontext is guaranteed to be opaque.
|
|
return GetDefaultBackgroundColorToDraw();
|
|
}
|
|
|
|
struct PaintParams {
|
|
nscolor mBackgroundColor;
|
|
};
|
|
|
|
LayerManager* PresShell::GetLayerManager() {
|
|
NS_ASSERTION(mViewManager, "Should have view manager");
|
|
|
|
nsView* rootView = mViewManager->GetRootView();
|
|
if (rootView) {
|
|
if (nsIWidget* widget = rootView->GetWidget()) {
|
|
return widget->GetLayerManager();
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
bool PresShell::AsyncPanZoomEnabled() {
|
|
NS_ASSERTION(mViewManager, "Should have view manager");
|
|
nsView* rootView = mViewManager->GetRootView();
|
|
if (rootView) {
|
|
if (nsIWidget* widget = rootView->GetWidget()) {
|
|
return widget->AsyncPanZoomEnabled();
|
|
}
|
|
}
|
|
return gfxPlatform::AsyncPanZoomEnabled();
|
|
}
|
|
|
|
void PresShell::SetIgnoreViewportScrolling(bool aIgnore) {
|
|
if (IgnoringViewportScrolling() == aIgnore) {
|
|
return;
|
|
}
|
|
RenderingState state(this);
|
|
state.mRenderFlags = ChangeFlag(state.mRenderFlags, aIgnore,
|
|
STATE_IGNORING_VIEWPORT_SCROLLING);
|
|
SetRenderingState(state);
|
|
}
|
|
|
|
nsresult PresShell::SetResolutionAndScaleTo(float aResolution,
|
|
nsAtom* aOrigin) {
|
|
if (!(aResolution > 0.0)) {
|
|
return NS_ERROR_ILLEGAL_VALUE;
|
|
}
|
|
if (aResolution == mResolution.valueOr(0.0)) {
|
|
MOZ_ASSERT(mResolution.isSome());
|
|
return NS_OK;
|
|
}
|
|
RenderingState state(this);
|
|
state.mResolution = Some(aResolution);
|
|
SetRenderingState(state);
|
|
if (mMobileViewportManager) {
|
|
mMobileViewportManager->ResolutionUpdated();
|
|
}
|
|
if (aOrigin != nsGkAtoms::apz) {
|
|
mResolutionUpdated = true;
|
|
}
|
|
if (auto* window = nsGlobalWindowInner::Cast(mDocument->GetInnerWindow())) {
|
|
window->VisualViewport()->PostResizeEvent();
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
float PresShell::GetCumulativeResolution() {
|
|
float resolution = GetResolution();
|
|
nsPresContext* parentCtx = GetPresContext()->GetParentPresContext();
|
|
if (parentCtx) {
|
|
resolution *= parentCtx->PresShell()->GetCumulativeResolution();
|
|
}
|
|
return resolution;
|
|
}
|
|
|
|
float PresShell::GetCumulativeNonRootScaleResolution() {
|
|
float resolution = 1.0;
|
|
nsIPresShell* currentShell = this;
|
|
while (currentShell) {
|
|
nsPresContext* currentCtx = currentShell->GetPresContext();
|
|
if (currentCtx != currentCtx->GetRootPresContext()) {
|
|
resolution *= currentShell->GetResolution();
|
|
}
|
|
nsPresContext* parentCtx = currentCtx->GetParentPresContext();
|
|
if (parentCtx) {
|
|
currentShell = parentCtx->PresShell();
|
|
} else {
|
|
currentShell = nullptr;
|
|
}
|
|
}
|
|
return resolution;
|
|
}
|
|
|
|
void PresShell::SetRestoreResolution(float aResolution,
|
|
LayoutDeviceIntSize aDisplaySize) {
|
|
if (mMobileViewportManager) {
|
|
mMobileViewportManager->SetRestoreResolution(aResolution, aDisplaySize);
|
|
}
|
|
}
|
|
|
|
void PresShell::SetRenderingState(const RenderingState& aState) {
|
|
if (mRenderFlags != aState.mRenderFlags) {
|
|
// Rendering state changed in a way that forces us to flush any
|
|
// retained layers we might already have.
|
|
LayerManager* manager = GetLayerManager();
|
|
if (manager) {
|
|
FrameLayerBuilder::InvalidateAllLayers(manager);
|
|
}
|
|
}
|
|
|
|
mRenderFlags = aState.mRenderFlags;
|
|
mResolution = aState.mResolution;
|
|
}
|
|
|
|
void PresShell::SynthesizeMouseMove(bool aFromScroll) {
|
|
if (!sSynthMouseMove) return;
|
|
|
|
if (mPaintingSuppressed || !mIsActive || !mPresContext) {
|
|
return;
|
|
}
|
|
|
|
if (!mPresContext->IsRoot()) {
|
|
nsIPresShell* rootPresShell = GetRootPresShell();
|
|
if (rootPresShell) {
|
|
rootPresShell->SynthesizeMouseMove(aFromScroll);
|
|
}
|
|
return;
|
|
}
|
|
|
|
if (mMouseLocation == nsPoint(NS_UNCONSTRAINEDSIZE, NS_UNCONSTRAINEDSIZE))
|
|
return;
|
|
|
|
if (!mSynthMouseMoveEvent.IsPending()) {
|
|
RefPtr<nsSynthMouseMoveEvent> ev =
|
|
new nsSynthMouseMoveEvent(this, aFromScroll);
|
|
|
|
GetPresContext()->RefreshDriver()->AddRefreshObserver(ev,
|
|
FlushType::Display);
|
|
mSynthMouseMoveEvent = std::move(ev);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Find the first floating view with a widget in a postorder traversal of the
|
|
* view tree that contains the point. Thus more deeply nested floating views
|
|
* are preferred over their ancestors, and floating views earlier in the
|
|
* view hierarchy (i.e., added later) are preferred over their siblings.
|
|
* This is adequate for finding the "topmost" floating view under a point,
|
|
* given that floating views don't supporting having a specific z-index.
|
|
*
|
|
* We cannot exit early when aPt is outside the view bounds, because floating
|
|
* views aren't necessarily included in their parent's bounds, so this could
|
|
* traverse the entire view hierarchy --- use carefully.
|
|
*/
|
|
static nsView* FindFloatingViewContaining(nsView* aView, nsPoint aPt) {
|
|
if (aView->GetVisibility() == nsViewVisibility_kHide)
|
|
// No need to look into descendants.
|
|
return nullptr;
|
|
|
|
nsIFrame* frame = aView->GetFrame();
|
|
if (frame) {
|
|
if (!frame->IsVisibleConsideringAncestors(
|
|
nsIFrame::VISIBILITY_CROSS_CHROME_CONTENT_BOUNDARY) ||
|
|
!frame->PresShell()->IsActive()) {
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
for (nsView* v = aView->GetFirstChild(); v; v = v->GetNextSibling()) {
|
|
nsView* r = FindFloatingViewContaining(v, v->ConvertFromParentCoords(aPt));
|
|
if (r) return r;
|
|
}
|
|
|
|
if (aView->GetFloating() && aView->HasWidget() &&
|
|
aView->GetDimensions().Contains(aPt))
|
|
return aView;
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
/*
|
|
* This finds the first view containing the given point in a postorder
|
|
* traversal of the view tree that contains the point, assuming that the
|
|
* point is not in a floating view. It assumes that only floating views
|
|
* extend outside the bounds of their parents.
|
|
*
|
|
* This methods should only be called if FindFloatingViewContaining
|
|
* returns null.
|
|
*/
|
|
static nsView* FindViewContaining(nsView* aView, nsPoint aPt) {
|
|
if (!aView->GetDimensions().Contains(aPt) ||
|
|
aView->GetVisibility() == nsViewVisibility_kHide) {
|
|
return nullptr;
|
|
}
|
|
|
|
nsIFrame* frame = aView->GetFrame();
|
|
if (frame) {
|
|
if (!frame->IsVisibleConsideringAncestors(
|
|
nsIFrame::VISIBILITY_CROSS_CHROME_CONTENT_BOUNDARY) ||
|
|
!frame->PresShell()->IsActive()) {
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
for (nsView* v = aView->GetFirstChild(); v; v = v->GetNextSibling()) {
|
|
nsView* r = FindViewContaining(v, v->ConvertFromParentCoords(aPt));
|
|
if (r) return r;
|
|
}
|
|
|
|
return aView;
|
|
}
|
|
|
|
void PresShell::ProcessSynthMouseMoveEvent(bool aFromScroll) {
|
|
// If drag session has started, we shouldn't synthesize mousemove event.
|
|
nsCOMPtr<nsIDragSession> dragSession = nsContentUtils::GetDragSession();
|
|
if (dragSession) {
|
|
mSynthMouseMoveEvent.Forget();
|
|
return;
|
|
}
|
|
|
|
// allow new event to be posted while handling this one only if the
|
|
// source of the event is a scroll (to prevent infinite reflow loops)
|
|
if (aFromScroll) {
|
|
mSynthMouseMoveEvent.Forget();
|
|
}
|
|
|
|
nsView* rootView = mViewManager ? mViewManager->GetRootView() : nullptr;
|
|
if (mMouseLocation == nsPoint(NS_UNCONSTRAINEDSIZE, NS_UNCONSTRAINEDSIZE) ||
|
|
!rootView || !rootView->HasWidget() || !mPresContext) {
|
|
mSynthMouseMoveEvent.Forget();
|
|
return;
|
|
}
|
|
|
|
NS_ASSERTION(mPresContext->IsRoot(), "Only a root pres shell should be here");
|
|
|
|
// Hold a ref to ourselves so DispatchEvent won't destroy us (since
|
|
// we need to access members after we call DispatchEvent).
|
|
nsCOMPtr<nsIPresShell> kungFuDeathGrip(this);
|
|
|
|
#ifdef DEBUG_MOUSE_LOCATION
|
|
printf("[ps=%p]synthesizing mouse move to (%d,%d)\n", this, mMouseLocation.x,
|
|
mMouseLocation.y);
|
|
#endif
|
|
|
|
int32_t APD = mPresContext->AppUnitsPerDevPixel();
|
|
|
|
// We need a widget to put in the event we are going to dispatch so we look
|
|
// for a view that has a widget and the mouse location is over. We first look
|
|
// for floating views, if there isn't one we use the root view. |view| holds
|
|
// that view.
|
|
nsView* view = nullptr;
|
|
|
|
// The appunits per devpixel ratio of |view|.
|
|
int32_t viewAPD;
|
|
|
|
// mRefPoint will be mMouseLocation relative to the widget of |view|, the
|
|
// widget we will put in the event we dispatch, in viewAPD appunits
|
|
nsPoint refpoint(0, 0);
|
|
|
|
// We always dispatch the event to the pres shell that contains the view that
|
|
// the mouse is over. pointVM is the VM of that pres shell.
|
|
nsViewManager* pointVM = nullptr;
|
|
|
|
// This could be a bit slow (traverses entire view hierarchy)
|
|
// but it's OK to do it once per synthetic mouse event
|
|
view = FindFloatingViewContaining(rootView, mMouseLocation);
|
|
if (!view) {
|
|
view = rootView;
|
|
nsView* pointView = FindViewContaining(rootView, mMouseLocation);
|
|
// pointView can be null in situations related to mouse capture
|
|
pointVM = (pointView ? pointView : view)->GetViewManager();
|
|
refpoint = mMouseLocation + rootView->ViewToWidgetOffset();
|
|
viewAPD = APD;
|
|
} else {
|
|
pointVM = view->GetViewManager();
|
|
nsIFrame* frame = view->GetFrame();
|
|
NS_ASSERTION(frame, "floating views can't be anonymous");
|
|
viewAPD = frame->PresContext()->AppUnitsPerDevPixel();
|
|
refpoint = mMouseLocation.ScaleToOtherAppUnits(APD, viewAPD);
|
|
refpoint -= view->GetOffsetTo(rootView);
|
|
refpoint += view->ViewToWidgetOffset();
|
|
}
|
|
NS_ASSERTION(view->GetWidget(), "view should have a widget here");
|
|
WidgetMouseEvent event(true, eMouseMove, view->GetWidget(),
|
|
WidgetMouseEvent::eSynthesized);
|
|
event.mRefPoint =
|
|
LayoutDeviceIntPoint::FromAppUnitsToNearest(refpoint, viewAPD);
|
|
event.mTime = PR_IntervalNow();
|
|
// XXX set event.mModifiers ?
|
|
// XXX mnakano I think that we should get the latest information from widget.
|
|
|
|
nsCOMPtr<nsIPresShell> shell = pointVM->GetPresShell();
|
|
if (shell) {
|
|
// Since this gets run in a refresh tick there isn't an InputAPZContext on
|
|
// the stack from the nsBaseWidget. We need to simulate one with at least
|
|
// the correct target guid, so that the correct callback transform gets
|
|
// applied if this event goes to a child process. The input block id is set
|
|
// to 0 because this is a synthetic event which doesn't really belong to any
|
|
// input block. Same for the APZ response field.
|
|
InputAPZContext apzContext(mMouseEventTargetGuid, 0, nsEventStatus_eIgnore);
|
|
shell->DispatchSynthMouseMove(&event);
|
|
}
|
|
|
|
if (!aFromScroll) {
|
|
mSynthMouseMoveEvent.Forget();
|
|
}
|
|
}
|
|
|
|
/* static */ void PresShell::MarkFramesInListApproximatelyVisible(
|
|
const nsDisplayList& aList) {
|
|
for (nsDisplayItem* item = aList.GetBottom(); item; item = item->GetAbove()) {
|
|
nsDisplayList* sublist = item->GetChildren();
|
|
if (sublist) {
|
|
MarkFramesInListApproximatelyVisible(*sublist);
|
|
continue;
|
|
}
|
|
|
|
nsIFrame* frame = item->Frame();
|
|
MOZ_ASSERT(frame);
|
|
|
|
if (!frame->TrackingVisibility()) {
|
|
continue;
|
|
}
|
|
|
|
// Use the presshell containing the frame.
|
|
auto* presShell = static_cast<PresShell*>(frame->PresShell());
|
|
MOZ_ASSERT(!presShell->AssumeAllFramesVisible());
|
|
if (presShell->mApproximatelyVisibleFrames.EnsureInserted(frame)) {
|
|
// The frame was added to mApproximatelyVisibleFrames, so increment its
|
|
// visible count.
|
|
frame->IncApproximateVisibleCount();
|
|
}
|
|
}
|
|
}
|
|
|
|
/* static */ void PresShell::DecApproximateVisibleCount(
|
|
VisibleFrames& aFrames, const Maybe<OnNonvisible>& aNonvisibleAction
|
|
/* = Nothing() */) {
|
|
for (auto iter = aFrames.Iter(); !iter.Done(); iter.Next()) {
|
|
nsIFrame* frame = iter.Get()->GetKey();
|
|
// Decrement the frame's visible count if we're still tracking its
|
|
// visibility. (We may not be, if the frame disabled visibility tracking
|
|
// after we added it to the visible frames list.)
|
|
if (frame->TrackingVisibility()) {
|
|
frame->DecApproximateVisibleCount(aNonvisibleAction);
|
|
}
|
|
}
|
|
}
|
|
|
|
void PresShell::RebuildApproximateFrameVisibilityDisplayList(
|
|
const nsDisplayList& aList) {
|
|
MOZ_ASSERT(!mApproximateFrameVisibilityVisited, "already visited?");
|
|
mApproximateFrameVisibilityVisited = true;
|
|
|
|
// Remove the entries of the mApproximatelyVisibleFrames hashtable and put
|
|
// them in oldApproxVisibleFrames.
|
|
VisibleFrames oldApproximatelyVisibleFrames;
|
|
mApproximatelyVisibleFrames.SwapElements(oldApproximatelyVisibleFrames);
|
|
|
|
MarkFramesInListApproximatelyVisible(aList);
|
|
|
|
DecApproximateVisibleCount(oldApproximatelyVisibleFrames);
|
|
}
|
|
|
|
/* static */ void PresShell::ClearApproximateFrameVisibilityVisited(
|
|
nsView* aView, bool aClear) {
|
|
nsViewManager* vm = aView->GetViewManager();
|
|
if (aClear) {
|
|
PresShell* presShell = static_cast<PresShell*>(vm->GetPresShell());
|
|
if (!presShell->mApproximateFrameVisibilityVisited) {
|
|
presShell->ClearApproximatelyVisibleFramesList();
|
|
}
|
|
presShell->mApproximateFrameVisibilityVisited = false;
|
|
}
|
|
for (nsView* v = aView->GetFirstChild(); v; v = v->GetNextSibling()) {
|
|
ClearApproximateFrameVisibilityVisited(v, v->GetViewManager() != vm);
|
|
}
|
|
}
|
|
|
|
void PresShell::ClearApproximatelyVisibleFramesList(
|
|
const Maybe<OnNonvisible>& aNonvisibleAction
|
|
/* = Nothing() */) {
|
|
DecApproximateVisibleCount(mApproximatelyVisibleFrames, aNonvisibleAction);
|
|
mApproximatelyVisibleFrames.Clear();
|
|
}
|
|
|
|
void PresShell::MarkFramesInSubtreeApproximatelyVisible(
|
|
nsIFrame* aFrame, const nsRect& aRect, bool aRemoveOnly /* = false */) {
|
|
MOZ_ASSERT(aFrame->PresShell() == this, "wrong presshell");
|
|
|
|
if (aFrame->TrackingVisibility() && aFrame->StyleVisibility()->IsVisible() &&
|
|
(!aRemoveOnly ||
|
|
aFrame->GetVisibility() == Visibility::APPROXIMATELY_VISIBLE)) {
|
|
MOZ_ASSERT(!AssumeAllFramesVisible());
|
|
if (mApproximatelyVisibleFrames.EnsureInserted(aFrame)) {
|
|
// The frame was added to mApproximatelyVisibleFrames, so increment its
|
|
// visible count.
|
|
aFrame->IncApproximateVisibleCount();
|
|
}
|
|
}
|
|
|
|
nsSubDocumentFrame* subdocFrame = do_QueryFrame(aFrame);
|
|
if (subdocFrame) {
|
|
nsIPresShell* presShell = subdocFrame->GetSubdocumentPresShellForPainting(
|
|
nsSubDocumentFrame::IGNORE_PAINT_SUPPRESSION);
|
|
if (presShell && !presShell->AssumeAllFramesVisible()) {
|
|
nsRect rect = aRect;
|
|
nsIFrame* root = presShell->GetRootFrame();
|
|
if (root) {
|
|
rect.MoveBy(aFrame->GetOffsetToCrossDoc(root));
|
|
} else {
|
|
rect.MoveBy(-aFrame->GetContentRectRelativeToSelf().TopLeft());
|
|
}
|
|
rect = rect.ScaleToOtherAppUnitsRoundOut(
|
|
aFrame->PresContext()->AppUnitsPerDevPixel(),
|
|
presShell->GetPresContext()->AppUnitsPerDevPixel());
|
|
|
|
presShell->RebuildApproximateFrameVisibility(&rect);
|
|
}
|
|
return;
|
|
}
|
|
|
|
nsRect rect = aRect;
|
|
|
|
nsIScrollableFrame* scrollFrame = do_QueryFrame(aFrame);
|
|
if (scrollFrame) {
|
|
bool ignoreDisplayPort = false;
|
|
if (nsLayoutUtils::IsMissingDisplayPortBaseRect(aFrame->GetContent())) {
|
|
// We can properly set the base rect for root scroll frames on top level
|
|
// and root content documents. Otherwise the base rect we compute might
|
|
// be way too big without the limiting that
|
|
// ScrollFrameHelper::DecideScrollableLayer does, so we just ignore the
|
|
// displayport in that case.
|
|
nsPresContext* pc = aFrame->PresContext();
|
|
if (scrollFrame->IsRootScrollFrameOfDocument() &&
|
|
(pc->IsRootContentDocument() || !pc->GetParentPresContext())) {
|
|
nsRect baseRect =
|
|
nsRect(nsPoint(0, 0),
|
|
nsLayoutUtils::CalculateCompositionSizeForFrame(aFrame));
|
|
nsLayoutUtils::SetDisplayPortBase(aFrame->GetContent(), baseRect);
|
|
} else {
|
|
ignoreDisplayPort = true;
|
|
}
|
|
}
|
|
|
|
nsRect displayPort;
|
|
bool usingDisplayport =
|
|
!ignoreDisplayPort &&
|
|
nsLayoutUtils::GetDisplayPortForVisibilityTesting(
|
|
aFrame->GetContent(), &displayPort, RelativeTo::ScrollFrame);
|
|
|
|
scrollFrame->NotifyApproximateFrameVisibilityUpdate(!usingDisplayport);
|
|
|
|
if (usingDisplayport) {
|
|
rect = displayPort;
|
|
} else {
|
|
rect = rect.Intersect(scrollFrame->GetScrollPortRect());
|
|
}
|
|
rect = scrollFrame->ExpandRectToNearlyVisible(rect);
|
|
}
|
|
|
|
bool preserves3DChildren = aFrame->Extend3DContext();
|
|
|
|
// We assume all frames in popups are visible, so we skip them here.
|
|
const nsIFrame::ChildListIDs skip = {nsIFrame::kPopupList,
|
|
nsIFrame::kSelectPopupList};
|
|
for (nsIFrame::ChildListIterator childLists(aFrame); !childLists.IsDone();
|
|
childLists.Next()) {
|
|
if (skip.contains(childLists.CurrentID())) {
|
|
continue;
|
|
}
|
|
|
|
for (nsIFrame* child : childLists.CurrentList()) {
|
|
nsRect r = rect - child->GetPosition();
|
|
if (!r.IntersectRect(r, child->GetVisualOverflowRect())) {
|
|
continue;
|
|
}
|
|
if (child->IsTransformed()) {
|
|
// for children of a preserve3d element we just pass down the same dirty
|
|
// rect
|
|
if (!preserves3DChildren ||
|
|
!child->Combines3DTransformWithAncestors()) {
|
|
const nsRect overflow = child->GetVisualOverflowRectRelativeToSelf();
|
|
nsRect out;
|
|
if (nsDisplayTransform::UntransformRect(r, overflow, child, &out)) {
|
|
r = out;
|
|
} else {
|
|
r.SetEmpty();
|
|
}
|
|
}
|
|
}
|
|
MarkFramesInSubtreeApproximatelyVisible(child, r);
|
|
}
|
|
}
|
|
}
|
|
|
|
void PresShell::RebuildApproximateFrameVisibility(
|
|
nsRect* aRect, bool aRemoveOnly /* = false */) {
|
|
MOZ_ASSERT(!mApproximateFrameVisibilityVisited, "already visited?");
|
|
mApproximateFrameVisibilityVisited = true;
|
|
|
|
nsIFrame* rootFrame = GetRootFrame();
|
|
if (!rootFrame) {
|
|
return;
|
|
}
|
|
|
|
// Remove the entries of the mApproximatelyVisibleFrames hashtable and put
|
|
// them in oldApproximatelyVisibleFrames.
|
|
VisibleFrames oldApproximatelyVisibleFrames;
|
|
mApproximatelyVisibleFrames.SwapElements(oldApproximatelyVisibleFrames);
|
|
|
|
nsRect vis(nsPoint(0, 0), rootFrame->GetSize());
|
|
if (aRect) {
|
|
vis = *aRect;
|
|
}
|
|
|
|
MarkFramesInSubtreeApproximatelyVisible(rootFrame, vis, aRemoveOnly);
|
|
|
|
DecApproximateVisibleCount(oldApproximatelyVisibleFrames);
|
|
}
|
|
|
|
void PresShell::UpdateApproximateFrameVisibility() {
|
|
DoUpdateApproximateFrameVisibility(/* aRemoveOnly = */ false);
|
|
}
|
|
|
|
void PresShell::DoUpdateApproximateFrameVisibility(bool aRemoveOnly) {
|
|
MOZ_ASSERT(
|
|
!mPresContext || mPresContext->IsRootContentDocument(),
|
|
"Updating approximate frame visibility on a non-root content document?");
|
|
|
|
mUpdateApproximateFrameVisibilityEvent.Revoke();
|
|
|
|
if (mHaveShutDown || mIsDestroying) {
|
|
return;
|
|
}
|
|
|
|
// call update on that frame
|
|
nsIFrame* rootFrame = GetRootFrame();
|
|
if (!rootFrame) {
|
|
ClearApproximatelyVisibleFramesList(Some(OnNonvisible::DISCARD_IMAGES));
|
|
return;
|
|
}
|
|
|
|
RebuildApproximateFrameVisibility(/* aRect = */ nullptr, aRemoveOnly);
|
|
ClearApproximateFrameVisibilityVisited(rootFrame->GetView(), true);
|
|
|
|
#ifdef DEBUG_FRAME_VISIBILITY_DISPLAY_LIST
|
|
// This can be used to debug the frame walker by comparing beforeFrameList
|
|
// and mApproximatelyVisibleFrames in RebuildFrameVisibilityDisplayList to see
|
|
// if they produce the same results (mApproximatelyVisibleFrames holds the
|
|
// frames the display list thinks are visible, beforeFrameList holds the
|
|
// frames the frame walker thinks are visible).
|
|
nsDisplayListBuilder builder(
|
|
rootFrame, nsDisplayListBuilderMode::FRAME_VISIBILITY, false);
|
|
nsRect updateRect(nsPoint(0, 0), rootFrame->GetSize());
|
|
nsIFrame* rootScroll = GetRootScrollFrame();
|
|
if (rootScroll) {
|
|
nsIContent* content = rootScroll->GetContent();
|
|
if (content) {
|
|
Unused << nsLayoutUtils::GetDisplayPortForVisibilityTesting(
|
|
content, &updateRect, RelativeTo::ScrollFrame);
|
|
}
|
|
|
|
if (IgnoringViewportScrolling()) {
|
|
builder.SetIgnoreScrollFrame(rootScroll);
|
|
}
|
|
}
|
|
builder.IgnorePaintSuppression();
|
|
builder.EnterPresShell(rootFrame);
|
|
nsDisplayList list;
|
|
rootFrame->BuildDisplayListForStackingContext(&builder, updateRect, &list);
|
|
builder.LeavePresShell(rootFrame, &list);
|
|
|
|
RebuildApproximateFrameVisibilityDisplayList(list);
|
|
|
|
ClearApproximateFrameVisibilityVisited(rootFrame->GetView(), true);
|
|
|
|
list.DeleteAll(&builder);
|
|
#endif
|
|
}
|
|
|
|
bool PresShell::AssumeAllFramesVisible() {
|
|
static bool sFrameVisibilityEnabled = true;
|
|
static bool sFrameVisibilityPrefCached = false;
|
|
|
|
if (!sFrameVisibilityPrefCached) {
|
|
Preferences::AddBoolVarCache(&sFrameVisibilityEnabled,
|
|
"layout.framevisibility.enabled", true);
|
|
sFrameVisibilityPrefCached = true;
|
|
}
|
|
|
|
if (!sFrameVisibilityEnabled || !mPresContext || !mDocument) {
|
|
return true;
|
|
}
|
|
|
|
// We assume all frames are visible in print, print preview, chrome, and
|
|
// resource docs and don't keep track of them.
|
|
if (mPresContext->Type() == nsPresContext::eContext_PrintPreview ||
|
|
mPresContext->Type() == nsPresContext::eContext_Print ||
|
|
mPresContext->IsChrome() || mDocument->IsResourceDoc()) {
|
|
return true;
|
|
}
|
|
|
|
// If we're assuming all frames are visible in the top level content
|
|
// document, we need to in subdocuments as well. Otherwise we can get in a
|
|
// situation where things like animations won't work in subdocuments because
|
|
// their frames appear not to be visible, since we won't schedule an image
|
|
// visibility update if the top level content document is assuming all
|
|
// frames are visible.
|
|
//
|
|
// Note that it's not safe to call IsRootContentDocument() if we're
|
|
// currently being destroyed, so we have to check that first.
|
|
if (!mHaveShutDown && !mIsDestroying &&
|
|
!mPresContext->IsRootContentDocument()) {
|
|
nsPresContext* presContext =
|
|
mPresContext->GetToplevelContentDocumentPresContext();
|
|
if (presContext && presContext->PresShell()->AssumeAllFramesVisible()) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
void PresShell::ScheduleApproximateFrameVisibilityUpdateSoon() {
|
|
if (AssumeAllFramesVisible()) {
|
|
return;
|
|
}
|
|
|
|
if (!mPresContext) {
|
|
return;
|
|
}
|
|
|
|
nsRefreshDriver* refreshDriver = mPresContext->RefreshDriver();
|
|
if (!refreshDriver) {
|
|
return;
|
|
}
|
|
|
|
// Ask the refresh driver to update frame visibility soon.
|
|
refreshDriver->ScheduleFrameVisibilityUpdate();
|
|
}
|
|
|
|
void PresShell::ScheduleApproximateFrameVisibilityUpdateNow() {
|
|
if (AssumeAllFramesVisible()) {
|
|
return;
|
|
}
|
|
|
|
if (!mPresContext->IsRootContentDocument()) {
|
|
nsPresContext* presContext =
|
|
mPresContext->GetToplevelContentDocumentPresContext();
|
|
if (!presContext) return;
|
|
MOZ_ASSERT(presContext->IsRootContentDocument(),
|
|
"Didn't get a root prescontext from "
|
|
"GetToplevelContentDocumentPresContext?");
|
|
presContext->PresShell()->ScheduleApproximateFrameVisibilityUpdateNow();
|
|
return;
|
|
}
|
|
|
|
if (mHaveShutDown || mIsDestroying) {
|
|
return;
|
|
}
|
|
|
|
if (mUpdateApproximateFrameVisibilityEvent.IsPending()) {
|
|
return;
|
|
}
|
|
|
|
RefPtr<nsRunnableMethod<PresShell>> event =
|
|
NewRunnableMethod("PresShell::UpdateApproximateFrameVisibility", this,
|
|
&PresShell::UpdateApproximateFrameVisibility);
|
|
nsresult rv = mDocument->Dispatch(TaskCategory::Other, do_AddRef(event));
|
|
|
|
if (NS_SUCCEEDED(rv)) {
|
|
mUpdateApproximateFrameVisibilityEvent = std::move(event);
|
|
}
|
|
}
|
|
|
|
void PresShell::EnsureFrameInApproximatelyVisibleList(nsIFrame* aFrame) {
|
|
if (!aFrame->TrackingVisibility()) {
|
|
return;
|
|
}
|
|
|
|
if (AssumeAllFramesVisible()) {
|
|
aFrame->IncApproximateVisibleCount();
|
|
return;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
// Make sure it's in this pres shell.
|
|
nsCOMPtr<nsIContent> content = aFrame->GetContent();
|
|
if (content) {
|
|
PresShell* shell = static_cast<PresShell*>(content->OwnerDoc()->GetShell());
|
|
MOZ_ASSERT(!shell || shell == this, "wrong shell");
|
|
}
|
|
#endif
|
|
|
|
if (mApproximatelyVisibleFrames.EnsureInserted(aFrame)) {
|
|
// We inserted a new entry.
|
|
aFrame->IncApproximateVisibleCount();
|
|
}
|
|
}
|
|
|
|
void PresShell::RemoveFrameFromApproximatelyVisibleList(nsIFrame* aFrame) {
|
|
#ifdef DEBUG
|
|
// Make sure it's in this pres shell.
|
|
nsCOMPtr<nsIContent> content = aFrame->GetContent();
|
|
if (content) {
|
|
PresShell* shell = static_cast<PresShell*>(content->OwnerDoc()->GetShell());
|
|
MOZ_ASSERT(!shell || shell == this, "wrong shell");
|
|
}
|
|
#endif
|
|
|
|
if (AssumeAllFramesVisible()) {
|
|
MOZ_ASSERT(mApproximatelyVisibleFrames.Count() == 0,
|
|
"Shouldn't have any frames in the table");
|
|
return;
|
|
}
|
|
|
|
if (mApproximatelyVisibleFrames.EnsureRemoved(aFrame) &&
|
|
aFrame->TrackingVisibility()) {
|
|
// aFrame was in the hashtable, and we're still tracking its visibility,
|
|
// so we need to decrement its visible count.
|
|
aFrame->DecApproximateVisibleCount();
|
|
}
|
|
}
|
|
|
|
class nsAutoNotifyDidPaint {
|
|
public:
|
|
nsAutoNotifyDidPaint(PresShell* aShell, uint32_t aFlags)
|
|
: mShell(aShell), mFlags(aFlags) {}
|
|
~nsAutoNotifyDidPaint() {
|
|
if (mFlags & nsIPresShell::PAINT_COMPOSITE) {
|
|
mShell->GetPresContext()->NotifyDidPaintForSubtree();
|
|
}
|
|
}
|
|
|
|
private:
|
|
PresShell* mShell;
|
|
uint32_t mFlags;
|
|
};
|
|
|
|
void nsIPresShell::RecordShadowStyleChange(ShadowRoot& aShadowRoot) {
|
|
mStyleSet->RecordShadowStyleChange(aShadowRoot);
|
|
ApplicableStylesChanged();
|
|
}
|
|
|
|
void PresShell::Paint(nsView* aViewToPaint, const nsRegion& aDirtyRegion,
|
|
uint32_t aFlags) {
|
|
nsCString url;
|
|
nsIURI* uri = mDocument->GetDocumentURI();
|
|
nsIDocument* contentRoot = GetPrimaryContentDocument();
|
|
if (contentRoot) {
|
|
uri = contentRoot->GetDocumentURI();
|
|
}
|
|
url = uri ? uri->GetSpecOrDefault() : NS_LITERAL_CSTRING("N/A");
|
|
#ifdef MOZ_GECKO_PROFILER
|
|
AUTO_PROFILER_LABEL_DYNAMIC_NSCSTRING("PresShell::Paint", GRAPHICS, url);
|
|
#endif
|
|
|
|
Maybe<js::AutoAssertNoContentJS> nojs;
|
|
|
|
// On Android, Flash can call into content JS during painting, so we can't
|
|
// assert there. However, we don't rely on this assertion on Android because
|
|
// we don't paint while JS is running.
|
|
#if !defined(MOZ_WIDGET_ANDROID)
|
|
if (!(aFlags & nsIPresShell::PAINT_COMPOSITE)) {
|
|
// We need to allow content JS when the flag is set since we may trigger
|
|
// MozAfterPaint events in content in those cases.
|
|
nojs.emplace(dom::danger::GetJSContext());
|
|
}
|
|
#endif
|
|
|
|
NS_ASSERTION(!mIsDestroying, "painting a destroyed PresShell");
|
|
NS_ASSERTION(aViewToPaint, "null view");
|
|
|
|
MOZ_ASSERT(!mApproximateFrameVisibilityVisited, "Should have been cleared");
|
|
|
|
if (!mIsActive) {
|
|
return;
|
|
}
|
|
|
|
if (gfxPrefs::APZKeyboardEnabled()) {
|
|
// Update the focus target for async keyboard scrolling. This will be
|
|
// forwarded to APZ by nsDisplayList::PaintRoot. We need to to do this
|
|
// before we enter the paint phase because dispatching eVoid events can
|
|
// cause layout to happen.
|
|
mAPZFocusTarget = FocusTarget(this, mAPZFocusSequenceNumber);
|
|
}
|
|
|
|
nsPresContext* presContext = GetPresContext();
|
|
AUTO_LAYOUT_PHASE_ENTRY_POINT(presContext, Paint);
|
|
|
|
nsIFrame* frame = aViewToPaint->GetFrame();
|
|
|
|
LayerManager* layerManager = aViewToPaint->GetWidget()->GetLayerManager();
|
|
NS_ASSERTION(layerManager, "Must be in paint event");
|
|
bool shouldInvalidate = layerManager->NeedsWidgetInvalidation();
|
|
|
|
nsAutoNotifyDidPaint notifyDidPaint(this, aFlags);
|
|
|
|
// Whether or not we should set first paint when painting is suppressed
|
|
// is debatable. For now we'll do it because B2G relied on first paint
|
|
// to configure the viewport and we only want to do that when we have
|
|
// real content to paint. See Bug 798245
|
|
if (mIsFirstPaint && !mPaintingSuppressed) {
|
|
layerManager->SetIsFirstPaint();
|
|
mIsFirstPaint = false;
|
|
}
|
|
|
|
if (!layerManager->BeginTransaction(url)) {
|
|
return;
|
|
}
|
|
|
|
// Send an updated focus target with this transaction. Be sure to do this
|
|
// before we paint in the case this is an empty transaction.
|
|
layerManager->SetFocusTarget(mAPZFocusTarget);
|
|
|
|
if (frame) {
|
|
// Try to do an empty transaction, if the frame tree does not
|
|
// need to be updated. Do not try to do an empty transaction on
|
|
// a non-retained layer manager (like the BasicLayerManager that
|
|
// draws the window title bar on Mac), because a) it won't work
|
|
// and b) below we don't want to clear NS_FRAME_UPDATE_LAYER_TREE,
|
|
// that will cause us to forget to update the real layer manager!
|
|
|
|
if (!(aFlags & PAINT_LAYERS)) {
|
|
if (layerManager->EndEmptyTransaction()) {
|
|
return;
|
|
}
|
|
NS_WARNING("Must complete empty transaction when compositing!");
|
|
}
|
|
|
|
if (!(aFlags & PAINT_SYNC_DECODE_IMAGES) &&
|
|
!(frame->GetStateBits() & NS_FRAME_UPDATE_LAYER_TREE) &&
|
|
!mNextPaintCompressed) {
|
|
NotifySubDocInvalidationFunc computeInvalidFunc =
|
|
presContext->MayHavePaintEventListenerInSubDocument()
|
|
? nsPresContext::NotifySubDocInvalidation
|
|
: 0;
|
|
bool computeInvalidRect =
|
|
computeInvalidFunc ||
|
|
(layerManager->GetBackendType() == LayersBackend::LAYERS_BASIC);
|
|
|
|
UniquePtr<LayerProperties> props;
|
|
// For WR, the layermanager has no root layer. We want to avoid
|
|
// calling ComputeDifferences in that case because it assumes non-null
|
|
// and crashes.
|
|
if (computeInvalidRect && layerManager->GetRoot()) {
|
|
props = LayerProperties::CloneFrom(layerManager->GetRoot());
|
|
}
|
|
|
|
MaybeSetupTransactionIdAllocator(layerManager, presContext);
|
|
|
|
if (layerManager->EndEmptyTransaction(
|
|
(aFlags & PAINT_COMPOSITE) ? LayerManager::END_DEFAULT
|
|
: LayerManager::END_NO_COMPOSITE)) {
|
|
nsIntRegion invalid;
|
|
bool areaOverflowed = false;
|
|
if (props) {
|
|
if (!props->ComputeDifferences(layerManager->GetRoot(), invalid,
|
|
computeInvalidFunc)) {
|
|
areaOverflowed = true;
|
|
}
|
|
} else {
|
|
LayerProperties::ClearInvalidations(layerManager->GetRoot());
|
|
}
|
|
if (props && !areaOverflowed) {
|
|
if (!invalid.IsEmpty()) {
|
|
nsIntRect bounds = invalid.GetBounds();
|
|
nsRect rect(presContext->DevPixelsToAppUnits(bounds.x),
|
|
presContext->DevPixelsToAppUnits(bounds.y),
|
|
presContext->DevPixelsToAppUnits(bounds.width),
|
|
presContext->DevPixelsToAppUnits(bounds.height));
|
|
if (shouldInvalidate) {
|
|
aViewToPaint->GetViewManager()->InvalidateViewNoSuppression(
|
|
aViewToPaint, rect);
|
|
}
|
|
presContext->NotifyInvalidation(
|
|
layerManager->GetLastTransactionId(), bounds);
|
|
}
|
|
} else if (shouldInvalidate) {
|
|
aViewToPaint->GetViewManager()->InvalidateView(aViewToPaint);
|
|
}
|
|
|
|
frame->UpdatePaintCountForPaintedPresShells();
|
|
return;
|
|
}
|
|
}
|
|
frame->RemoveStateBits(NS_FRAME_UPDATE_LAYER_TREE);
|
|
}
|
|
if (frame) {
|
|
frame->ClearPresShellsFromLastPaint();
|
|
}
|
|
|
|
nscolor bgcolor = ComputeBackstopColor(aViewToPaint);
|
|
PaintFrameFlags flags = PaintFrameFlags::PAINT_WIDGET_LAYERS |
|
|
PaintFrameFlags::PAINT_EXISTING_TRANSACTION;
|
|
if (!(aFlags & PAINT_COMPOSITE)) {
|
|
flags |= PaintFrameFlags::PAINT_NO_COMPOSITE;
|
|
}
|
|
if (aFlags & PAINT_SYNC_DECODE_IMAGES) {
|
|
flags |= PaintFrameFlags::PAINT_SYNC_DECODE_IMAGES;
|
|
}
|
|
if (mNextPaintCompressed) {
|
|
flags |= PaintFrameFlags::PAINT_COMPRESSED;
|
|
mNextPaintCompressed = false;
|
|
}
|
|
|
|
if (frame) {
|
|
// We can paint directly into the widget using its layer manager.
|
|
nsLayoutUtils::PaintFrame(nullptr, frame, aDirtyRegion, bgcolor,
|
|
nsDisplayListBuilderMode::PAINTING, flags);
|
|
|
|
// When recording/replaying, create a checkpoint after every paint. This
|
|
// can cause content JS to run, so reset |nojs|.
|
|
if (recordreplay::IsRecordingOrReplaying()) {
|
|
nojs.reset();
|
|
recordreplay::child::CreateCheckpoint();
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
if (layerManager->GetBackendType() == layers::LayersBackend::LAYERS_WR) {
|
|
nsPresContext* pc = GetPresContext();
|
|
LayoutDeviceRect bounds = LayoutDeviceRect::FromAppUnits(
|
|
pc->GetVisibleArea(), pc->AppUnitsPerDevPixel());
|
|
bgcolor = NS_ComposeColors(bgcolor, mCanvasBackgroundColor);
|
|
WebRenderBackgroundData data(wr::ToLayoutRect(bounds),
|
|
wr::ToColorF(ToDeviceColor(bgcolor)));
|
|
nsTArray<wr::WrFilterOp> wrFilters;
|
|
|
|
MaybeSetupTransactionIdAllocator(layerManager, presContext);
|
|
layerManager->AsWebRenderLayerManager()->EndTransactionWithoutLayer(
|
|
nullptr, nullptr, wrFilters, &data);
|
|
return;
|
|
}
|
|
|
|
RefPtr<ColorLayer> root = layerManager->CreateColorLayer();
|
|
if (root) {
|
|
nsPresContext* pc = GetPresContext();
|
|
nsIntRect bounds =
|
|
pc->GetVisibleArea().ToOutsidePixels(pc->AppUnitsPerDevPixel());
|
|
bgcolor = NS_ComposeColors(bgcolor, mCanvasBackgroundColor);
|
|
root->SetColor(Color::FromABGR(bgcolor));
|
|
root->SetVisibleRegion(LayerIntRegion::FromUnknownRegion(bounds));
|
|
layerManager->SetRoot(root);
|
|
}
|
|
MaybeSetupTransactionIdAllocator(layerManager, presContext);
|
|
layerManager->EndTransaction(nullptr, nullptr,
|
|
(aFlags & PAINT_COMPOSITE)
|
|
? LayerManager::END_DEFAULT
|
|
: LayerManager::END_NO_COMPOSITE);
|
|
}
|
|
|
|
// static
|
|
void nsIPresShell::SetCapturingContent(nsIContent* aContent, uint8_t aFlags) {
|
|
// If capture was set for pointer lock, don't unlock unless we are coming
|
|
// out of pointer lock explicitly.
|
|
if (!aContent && gCaptureInfo.mPointerLock &&
|
|
!(aFlags & CAPTURE_POINTERLOCK)) {
|
|
return;
|
|
}
|
|
|
|
gCaptureInfo.mContent = nullptr;
|
|
|
|
// only set capturing content if allowed or the CAPTURE_IGNOREALLOWED or
|
|
// CAPTURE_POINTERLOCK flags are used.
|
|
if ((aFlags & CAPTURE_IGNOREALLOWED) || gCaptureInfo.mAllowed ||
|
|
(aFlags & CAPTURE_POINTERLOCK)) {
|
|
if (aContent) {
|
|
gCaptureInfo.mContent = aContent;
|
|
}
|
|
// CAPTURE_POINTERLOCK is the same as CAPTURE_RETARGETTOELEMENT &
|
|
// CAPTURE_IGNOREALLOWED
|
|
gCaptureInfo.mRetargetToElement =
|
|
((aFlags & CAPTURE_RETARGETTOELEMENT) != 0) ||
|
|
((aFlags & CAPTURE_POINTERLOCK) != 0);
|
|
gCaptureInfo.mPreventDrag = (aFlags & CAPTURE_PREVENTDRAG) != 0;
|
|
gCaptureInfo.mPointerLock = (aFlags & CAPTURE_POINTERLOCK) != 0;
|
|
}
|
|
}
|
|
|
|
nsIContent* nsIPresShell::GetCurrentEventContent() {
|
|
if (mCurrentEventContent &&
|
|
mCurrentEventContent->GetComposedDoc() != mDocument) {
|
|
mCurrentEventContent = nullptr;
|
|
mCurrentEventFrame = nullptr;
|
|
}
|
|
return mCurrentEventContent;
|
|
}
|
|
|
|
nsIFrame* nsIPresShell::GetCurrentEventFrame() {
|
|
if (MOZ_UNLIKELY(mIsDestroying)) {
|
|
return nullptr;
|
|
}
|
|
|
|
// GetCurrentEventContent() makes sure the content is still in the
|
|
// same document that this pres shell belongs to. If not, then the
|
|
// frame shouldn't get an event, nor should we even assume its safe
|
|
// to try and find the frame.
|
|
nsIContent* content = GetCurrentEventContent();
|
|
if (!mCurrentEventFrame && content) {
|
|
mCurrentEventFrame = content->GetPrimaryFrame();
|
|
MOZ_ASSERT(!mCurrentEventFrame ||
|
|
mCurrentEventFrame->PresContext()->GetPresShell() == this);
|
|
}
|
|
return mCurrentEventFrame;
|
|
}
|
|
|
|
already_AddRefed<nsIContent> nsIPresShell::GetEventTargetContent(
|
|
WidgetEvent* aEvent) {
|
|
nsCOMPtr<nsIContent> content = GetCurrentEventContent();
|
|
if (!content) {
|
|
nsIFrame* currentEventFrame = GetCurrentEventFrame();
|
|
if (currentEventFrame) {
|
|
currentEventFrame->GetContentForEvent(aEvent, getter_AddRefs(content));
|
|
NS_ASSERTION(!content || content->GetComposedDoc() == mDocument,
|
|
"handing out content from a different doc");
|
|
}
|
|
}
|
|
return content.forget();
|
|
}
|
|
|
|
void nsIPresShell::PushCurrentEventInfo(nsIFrame* aFrame,
|
|
nsIContent* aContent) {
|
|
if (mCurrentEventFrame || mCurrentEventContent) {
|
|
mCurrentEventFrameStack.InsertElementAt(0, mCurrentEventFrame);
|
|
mCurrentEventContentStack.InsertObjectAt(mCurrentEventContent, 0);
|
|
}
|
|
mCurrentEventFrame = aFrame;
|
|
mCurrentEventContent = aContent;
|
|
}
|
|
|
|
void nsIPresShell::PopCurrentEventInfo() {
|
|
mCurrentEventFrame = nullptr;
|
|
mCurrentEventContent = nullptr;
|
|
|
|
if (0 != mCurrentEventFrameStack.Length()) {
|
|
mCurrentEventFrame = mCurrentEventFrameStack.ElementAt(0);
|
|
mCurrentEventFrameStack.RemoveElementAt(0);
|
|
mCurrentEventContent = mCurrentEventContentStack.ObjectAt(0);
|
|
mCurrentEventContentStack.RemoveObjectAt(0);
|
|
|
|
// Don't use it if it has moved to a different document.
|
|
if (mCurrentEventContent &&
|
|
mCurrentEventContent->GetComposedDoc() != mDocument) {
|
|
mCurrentEventContent = nullptr;
|
|
mCurrentEventFrame = nullptr;
|
|
}
|
|
}
|
|
}
|
|
|
|
bool PresShell::InZombieDocument(nsIContent* aContent) {
|
|
// If a content node points to a null document, or the document is not
|
|
// attached to a window, then it is possibly in a zombie document,
|
|
// about to be replaced by a newly loading document.
|
|
// Such documents cannot handle DOM events.
|
|
// It might actually be in a node not attached to any document,
|
|
// in which case there is not parent presshell to retarget it to.
|
|
nsIDocument* doc = aContent->GetComposedDoc();
|
|
return !doc || !doc->GetWindow();
|
|
}
|
|
|
|
already_AddRefed<nsPIDOMWindowOuter> PresShell::GetRootWindow() {
|
|
nsCOMPtr<nsPIDOMWindowOuter> window = mDocument->GetWindow();
|
|
if (window) {
|
|
nsCOMPtr<nsPIDOMWindowOuter> rootWindow = window->GetPrivateRoot();
|
|
NS_ASSERTION(rootWindow, "nsPIDOMWindow::GetPrivateRoot() returns NULL");
|
|
return rootWindow.forget();
|
|
}
|
|
|
|
// If we don't have DOM window, we're zombie, we should find the root window
|
|
// with our parent shell.
|
|
nsCOMPtr<nsIPresShell> parent = GetParentPresShellForEventHandling();
|
|
NS_ENSURE_TRUE(parent, nullptr);
|
|
return parent->GetRootWindow();
|
|
}
|
|
|
|
already_AddRefed<nsPIDOMWindowOuter>
|
|
PresShell::GetFocusedDOMWindowInOurWindow() {
|
|
nsCOMPtr<nsPIDOMWindowOuter> rootWindow = GetRootWindow();
|
|
NS_ENSURE_TRUE(rootWindow, nullptr);
|
|
nsCOMPtr<nsPIDOMWindowOuter> focusedWindow;
|
|
nsFocusManager::GetFocusedDescendant(rootWindow,
|
|
nsFocusManager::eIncludeAllDescendants,
|
|
getter_AddRefs(focusedWindow));
|
|
return focusedWindow.forget();
|
|
}
|
|
|
|
already_AddRefed<nsIContent> nsIPresShell::GetFocusedContentInOurWindow()
|
|
const {
|
|
nsIFocusManager* fm = nsFocusManager::GetFocusManager();
|
|
if (fm && mDocument) {
|
|
RefPtr<Element> focusedElement;
|
|
fm->GetFocusedElementForWindow(mDocument->GetWindow(), false, nullptr,
|
|
getter_AddRefs(focusedElement));
|
|
return focusedElement.forget();
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
already_AddRefed<nsIPresShell> PresShell::GetParentPresShellForEventHandling() {
|
|
NS_ENSURE_TRUE(mPresContext, nullptr);
|
|
|
|
// Now, find the parent pres shell and send the event there
|
|
nsCOMPtr<nsIDocShellTreeItem> treeItem = mPresContext->GetDocShell();
|
|
if (!treeItem) {
|
|
treeItem = mForwardingContainer.get();
|
|
}
|
|
|
|
// Might have gone away, or never been around to start with
|
|
NS_ENSURE_TRUE(treeItem, nullptr);
|
|
|
|
nsCOMPtr<nsIDocShellTreeItem> parentTreeItem;
|
|
treeItem->GetParent(getter_AddRefs(parentTreeItem));
|
|
nsCOMPtr<nsIDocShell> parentDocShell = do_QueryInterface(parentTreeItem);
|
|
NS_ENSURE_TRUE(parentDocShell && treeItem != parentTreeItem, nullptr);
|
|
|
|
nsCOMPtr<nsIPresShell> parentPresShell = parentDocShell->GetPresShell();
|
|
return parentPresShell.forget();
|
|
}
|
|
|
|
nsresult PresShell::RetargetEventToParent(WidgetGUIEvent* aEvent,
|
|
nsEventStatus* aEventStatus) {
|
|
// Send this events straight up to the parent pres shell.
|
|
// We do this for keystroke events in zombie documents or if either a frame
|
|
// or a root content is not present.
|
|
// That way at least the UI key bindings can work.
|
|
|
|
nsCOMPtr<nsIPresShell> kungFuDeathGrip(this);
|
|
nsCOMPtr<nsIPresShell> parentPresShell = GetParentPresShellForEventHandling();
|
|
NS_ENSURE_TRUE(parentPresShell, NS_ERROR_FAILURE);
|
|
|
|
// Fake the event as though it's from the parent pres shell's root frame.
|
|
return parentPresShell->HandleEvent(parentPresShell->GetRootFrame(), aEvent,
|
|
true, aEventStatus);
|
|
}
|
|
|
|
void PresShell::DisableNonTestMouseEvents(bool aDisable) {
|
|
sDisableNonTestMouseEvents = aDisable;
|
|
}
|
|
|
|
void PresShell::RecordMouseLocation(WidgetGUIEvent* aEvent) {
|
|
if (!mPresContext) return;
|
|
|
|
if (!mPresContext->IsRoot()) {
|
|
PresShell* rootPresShell = GetRootPresShell();
|
|
if (rootPresShell) {
|
|
rootPresShell->RecordMouseLocation(aEvent);
|
|
}
|
|
return;
|
|
}
|
|
|
|
if ((aEvent->mMessage == eMouseMove &&
|
|
aEvent->AsMouseEvent()->mReason == WidgetMouseEvent::eReal) ||
|
|
aEvent->mMessage == eMouseEnterIntoWidget ||
|
|
aEvent->mMessage == eMouseDown || aEvent->mMessage == eMouseUp) {
|
|
nsIFrame* rootFrame = GetRootFrame();
|
|
if (!rootFrame) {
|
|
nsView* rootView = mViewManager->GetRootView();
|
|
mMouseLocation = nsLayoutUtils::TranslateWidgetToView(
|
|
mPresContext, aEvent->mWidget, aEvent->mRefPoint, rootView);
|
|
mMouseEventTargetGuid = InputAPZContext::GetTargetLayerGuid();
|
|
} else {
|
|
mMouseLocation =
|
|
nsLayoutUtils::GetEventCoordinatesRelativeTo(aEvent, rootFrame);
|
|
mMouseEventTargetGuid = InputAPZContext::GetTargetLayerGuid();
|
|
}
|
|
#ifdef DEBUG_MOUSE_LOCATION
|
|
if (aEvent->mMessage == eMouseEnterIntoWidget) {
|
|
printf("[ps=%p]got mouse enter for %p\n", this, aEvent->mWidget);
|
|
}
|
|
printf("[ps=%p]setting mouse location to (%d,%d)\n", this, mMouseLocation.x,
|
|
mMouseLocation.y);
|
|
#endif
|
|
if (aEvent->mMessage == eMouseEnterIntoWidget) {
|
|
SynthesizeMouseMove(false);
|
|
}
|
|
} else if (aEvent->mMessage == eMouseExitFromWidget) {
|
|
// Although we only care about the mouse moving into an area for which this
|
|
// pres shell doesn't receive mouse move events, we don't check which widget
|
|
// the mouse exit was for since this seems to vary by platform. Hopefully
|
|
// this won't matter at all since we'll get the mouse move or enter after
|
|
// the mouse exit when the mouse moves from one of our widgets into another.
|
|
mMouseLocation = nsPoint(NS_UNCONSTRAINEDSIZE, NS_UNCONSTRAINEDSIZE);
|
|
mMouseEventTargetGuid = InputAPZContext::GetTargetLayerGuid();
|
|
#ifdef DEBUG_MOUSE_LOCATION
|
|
printf("[ps=%p]got mouse exit for %p\n", this, aEvent->mWidget);
|
|
printf("[ps=%p]clearing mouse location\n", this);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
static nsIFrame* GetNearestFrameContainingPresShell(nsIPresShell* aPresShell) {
|
|
nsView* view = aPresShell->GetViewManager()->GetRootView();
|
|
while (view && !view->GetFrame()) {
|
|
view = view->GetParent();
|
|
}
|
|
|
|
nsIFrame* frame = nullptr;
|
|
if (view) {
|
|
frame = view->GetFrame();
|
|
}
|
|
|
|
return frame;
|
|
}
|
|
|
|
static bool FlushThrottledStyles(nsIDocument* aDocument, void* aData) {
|
|
nsIPresShell* shell = aDocument->GetShell();
|
|
if (shell && shell->IsVisible()) {
|
|
nsPresContext* presContext = shell->GetPresContext();
|
|
if (presContext) {
|
|
presContext->RestyleManager()->UpdateOnlyAnimationStyles();
|
|
}
|
|
}
|
|
|
|
aDocument->EnumerateSubDocuments(FlushThrottledStyles, nullptr);
|
|
return true;
|
|
}
|
|
|
|
bool PresShell::CanDispatchEvent(const WidgetGUIEvent* aEvent) const {
|
|
bool rv =
|
|
mPresContext && !mHaveShutDown && nsContentUtils::IsSafeToRunScript();
|
|
if (aEvent) {
|
|
rv &= (aEvent && aEvent->mWidget && !aEvent->mWidget->Destroyed());
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
/* static */ PresShell* PresShell::GetShellForEventTarget(
|
|
nsIFrame* aFrame, nsIContent* aContent) {
|
|
if (aFrame) {
|
|
return static_cast<PresShell*>(aFrame->PresShell());
|
|
}
|
|
if (aContent) {
|
|
nsIDocument* doc = aContent->GetComposedDoc();
|
|
if (!doc) {
|
|
return nullptr;
|
|
}
|
|
return static_cast<PresShell*>(doc->GetShell());
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
/* static */ PresShell* PresShell::GetShellForTouchEvent(
|
|
WidgetGUIEvent* aEvent) {
|
|
PresShell* shell = nullptr;
|
|
switch (aEvent->mMessage) {
|
|
case eTouchMove:
|
|
case eTouchCancel:
|
|
case eTouchEnd: {
|
|
// get the correct shell to dispatch to
|
|
WidgetTouchEvent* touchEvent = aEvent->AsTouchEvent();
|
|
for (dom::Touch* touch : touchEvent->mTouches) {
|
|
if (!touch) {
|
|
break;
|
|
}
|
|
|
|
RefPtr<dom::Touch> oldTouch =
|
|
TouchManager::GetCapturedTouch(touch->Identifier());
|
|
if (!oldTouch) {
|
|
break;
|
|
}
|
|
|
|
nsCOMPtr<nsIContent> content = do_QueryInterface(oldTouch->GetTarget());
|
|
if (!content) {
|
|
break;
|
|
}
|
|
|
|
nsIFrame* contentFrame = content->GetPrimaryFrame();
|
|
if (!contentFrame) {
|
|
break;
|
|
}
|
|
|
|
shell =
|
|
static_cast<PresShell*>(contentFrame->PresContext()->PresShell());
|
|
if (shell) {
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
return shell;
|
|
}
|
|
|
|
nsresult PresShell::HandleEvent(nsIFrame* aFrame, WidgetGUIEvent* aEvent,
|
|
bool aDontRetargetEvents,
|
|
nsEventStatus* aEventStatus) {
|
|
#ifdef MOZ_TASK_TRACER
|
|
Maybe<AutoSourceEvent> taskTracerEvent;
|
|
if (MOZ_UNLIKELY(IsStartLogging())) {
|
|
// Make touch events, mouse events and hardware key events to be
|
|
// the source events of TaskTracer, and originate the rest
|
|
// correlation tasks from here.
|
|
SourceEventType type = SourceEventType::Unknown;
|
|
if (aEvent->AsTouchEvent()) {
|
|
type = SourceEventType::Touch;
|
|
} else if (aEvent->AsMouseEvent()) {
|
|
type = SourceEventType::Mouse;
|
|
} else if (aEvent->AsKeyboardEvent()) {
|
|
type = SourceEventType::Key;
|
|
}
|
|
taskTracerEvent.emplace(type);
|
|
}
|
|
#endif
|
|
|
|
NS_ASSERTION(aFrame, "aFrame should be not null");
|
|
|
|
// Update the latest focus sequence number with this new sequence number;
|
|
// the next transasction that gets sent to the compositor will carry this over
|
|
if (mAPZFocusSequenceNumber < aEvent->mFocusSequenceNumber) {
|
|
mAPZFocusSequenceNumber = aEvent->mFocusSequenceNumber;
|
|
}
|
|
|
|
if (mIsDestroying ||
|
|
(sDisableNonTestMouseEvents && !aEvent->mFlags.mIsSynthesizedForTests &&
|
|
aEvent->HasMouseEventMessage())) {
|
|
return NS_OK;
|
|
}
|
|
|
|
RecordMouseLocation(aEvent);
|
|
|
|
if (AccessibleCaretEnabled(mDocument->GetDocShell())) {
|
|
// We have to target the focus window because regardless of where the
|
|
// touch goes, we want to access the copy paste manager.
|
|
nsCOMPtr<nsPIDOMWindowOuter> window = GetFocusedDOMWindowInOurWindow();
|
|
nsCOMPtr<nsIDocument> retargetEventDoc =
|
|
window ? window->GetExtantDoc() : nullptr;
|
|
nsCOMPtr<nsIPresShell> presShell =
|
|
retargetEventDoc ? retargetEventDoc->GetShell() : nullptr;
|
|
|
|
RefPtr<AccessibleCaretEventHub> eventHub =
|
|
presShell ? presShell->GetAccessibleCaretEventHub() : nullptr;
|
|
if (eventHub && *aEventStatus != nsEventStatus_eConsumeNoDefault) {
|
|
// Don't dispatch event to AccessibleCaretEventHub when the event status
|
|
// is nsEventStatus_eConsumeNoDefault. This might be happened when content
|
|
// preventDefault on the pointer events. In such case, we also call
|
|
// preventDefault on mouse events to stop default behaviors.
|
|
*aEventStatus = eventHub->HandleEvent(aEvent);
|
|
if (*aEventStatus == nsEventStatus_eConsumeNoDefault) {
|
|
// If the event is consumed, cancel APZC panning by setting
|
|
// mMultipleActionsPrevented.
|
|
aEvent->mFlags.mMultipleActionsPrevented = true;
|
|
return NS_OK;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!nsContentUtils::IsSafeToRunScript() &&
|
|
aEvent->IsAllowedToDispatchDOMEvent()) {
|
|
if (aEvent->mClass == eCompositionEventClass) {
|
|
IMEStateManager::OnCompositionEventDiscarded(
|
|
aEvent->AsCompositionEvent());
|
|
}
|
|
#ifdef DEBUG
|
|
if (aEvent->IsIMERelatedEvent()) {
|
|
nsPrintfCString warning("%d event is discarded", aEvent->mMessage);
|
|
NS_WARNING(warning.get());
|
|
}
|
|
#endif
|
|
nsContentUtils::WarnScriptWasIgnored(GetDocument());
|
|
return NS_OK;
|
|
}
|
|
|
|
nsIContent* capturingContent =
|
|
((aEvent->mClass == ePointerEventClass ||
|
|
aEvent->mClass == eWheelEventClass || aEvent->HasMouseEventMessage())
|
|
? GetCapturingContent()
|
|
: nullptr);
|
|
|
|
nsCOMPtr<nsIDocument> retargetEventDoc;
|
|
if (!aDontRetargetEvents) {
|
|
// key and IME related events should not cross top level window boundary.
|
|
// Basically, such input events should be fired only on focused widget.
|
|
// However, some IMEs might need to clean up composition after focused
|
|
// window is deactivated. And also some tests on MozMill want to test key
|
|
// handling on deactivated window because MozMill window can be activated
|
|
// during tests. So, there is no merit the events should be redirected to
|
|
// active window. So, the events should be handled on the last focused
|
|
// content in the last focused DOM window in same top level window.
|
|
// Note, if no DOM window has been focused yet, we can discard the events.
|
|
if (aEvent->IsTargetedAtFocusedWindow()) {
|
|
nsCOMPtr<nsPIDOMWindowOuter> window = GetFocusedDOMWindowInOurWindow();
|
|
// No DOM window in same top level window has not been focused yet,
|
|
// discard the events.
|
|
if (!window) {
|
|
return NS_OK;
|
|
}
|
|
|
|
retargetEventDoc = window->GetExtantDoc();
|
|
if (!retargetEventDoc) return NS_OK;
|
|
} else if (capturingContent) {
|
|
// if the mouse is being captured then retarget the mouse event at the
|
|
// document that is being captured.
|
|
retargetEventDoc = capturingContent->GetComposedDoc();
|
|
#ifdef ANDROID
|
|
} else if ((aEvent->mClass == eTouchEventClass) ||
|
|
(aEvent->mClass == eMouseEventClass) ||
|
|
(aEvent->mClass == eWheelEventClass)) {
|
|
retargetEventDoc = GetPrimaryContentDocument();
|
|
#endif
|
|
}
|
|
|
|
if (retargetEventDoc) {
|
|
nsCOMPtr<nsIPresShell> presShell = retargetEventDoc->GetShell();
|
|
// Even if the document doesn't have PresShell, i.e., it's invisible, we
|
|
// need to dispatch only KeyboardEvent in its nearest visible document
|
|
// because key focus shouldn't be caught by invisible document.
|
|
if (!presShell) {
|
|
if (!aEvent->HasKeyEventMessage()) {
|
|
return NS_OK;
|
|
}
|
|
while (!presShell) {
|
|
retargetEventDoc = retargetEventDoc->GetParentDocument();
|
|
if (!retargetEventDoc) {
|
|
return NS_OK;
|
|
}
|
|
presShell = retargetEventDoc->GetShell();
|
|
}
|
|
}
|
|
|
|
if (presShell != this) {
|
|
nsIFrame* frame = presShell->GetRootFrame();
|
|
if (!frame) {
|
|
if (aEvent->mMessage == eQueryTextContent ||
|
|
aEvent->IsContentCommandEvent()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
frame = GetNearestFrameContainingPresShell(presShell);
|
|
}
|
|
|
|
if (!frame) return NS_OK;
|
|
|
|
nsCOMPtr<nsIPresShell> shell = frame->PresContext()->GetPresShell();
|
|
return shell->HandleEvent(frame, aEvent, true, aEventStatus);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (aEvent->mClass == eKeyboardEventClass && mDocument &&
|
|
mDocument->EventHandlingSuppressed()) {
|
|
if (aEvent->mMessage == eKeyDown) {
|
|
mNoDelayedKeyEvents = true;
|
|
} else if (!mNoDelayedKeyEvents) {
|
|
auto event = MakeUnique<DelayedKeyEvent>(aEvent->AsKeyboardEvent());
|
|
mDelayedEvents.AppendElement(std::move(event));
|
|
}
|
|
aEvent->mFlags.mIsSuppressedOrDelayed = true;
|
|
return NS_OK;
|
|
}
|
|
|
|
nsIFrame* frame = aFrame;
|
|
|
|
if (aEvent->IsUsingCoordinates()) {
|
|
if (mDocument) {
|
|
if (aEvent->mClass == eTouchEventClass) {
|
|
nsIDocument::UnlockPointer();
|
|
}
|
|
|
|
AutoWeakFrame weakFrame(frame);
|
|
{ // scope for scriptBlocker.
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
FlushThrottledStyles(GetRootPresShell()->GetDocument(), nullptr);
|
|
}
|
|
|
|
if (!weakFrame.IsAlive()) {
|
|
frame = GetNearestFrameContainingPresShell(this);
|
|
}
|
|
}
|
|
|
|
if (!frame) {
|
|
NS_WARNING("Nothing to handle this event!");
|
|
return NS_OK;
|
|
}
|
|
|
|
nsPresContext* framePresContext = frame->PresContext();
|
|
nsPresContext* rootPresContext = framePresContext->GetRootPresContext();
|
|
NS_ASSERTION(rootPresContext == mPresContext->GetRootPresContext(),
|
|
"How did we end up outside the connected "
|
|
"prescontext/viewmanager hierarchy?");
|
|
nsIFrame* popupFrame = nsLayoutUtils::GetPopupFrameForEventCoordinates(
|
|
rootPresContext, aEvent);
|
|
// If a remote browser is currently capturing input break out if we
|
|
// detect a chrome generated popup.
|
|
if (popupFrame && capturingContent &&
|
|
EventStateManager::IsRemoteTarget(capturingContent)) {
|
|
capturingContent = nullptr;
|
|
}
|
|
// If the popupFrame is an ancestor of the 'frame', the frame should
|
|
// handle the event, otherwise, the popup should handle it.
|
|
if (popupFrame && !nsContentUtils::ContentIsCrossDocDescendantOf(
|
|
framePresContext->GetPresShell()->GetDocument(),
|
|
popupFrame->GetContent())) {
|
|
// If we aren't starting our event dispatch from the root frame of the
|
|
// root prescontext, then someone must be capturing the mouse. In that
|
|
// case we only want to use the popup list if the capture is
|
|
// inside the popup.
|
|
if (framePresContext == rootPresContext &&
|
|
frame == mFrameConstructor->GetRootFrame()) {
|
|
frame = popupFrame;
|
|
} else if (capturingContent &&
|
|
nsContentUtils::ContentIsDescendantOf(
|
|
capturingContent, popupFrame->GetContent())) {
|
|
frame = popupFrame;
|
|
}
|
|
}
|
|
|
|
bool captureRetarget = false;
|
|
if (capturingContent) {
|
|
// If a capture is active, determine if the docshell is visible. If not,
|
|
// clear the capture and target the mouse event normally instead. This
|
|
// would occur if the mouse button is held down while a tab change occurs.
|
|
// If the docshell is visible, look for a scrolling container.
|
|
bool vis;
|
|
nsCOMPtr<nsIBaseWindow> baseWin =
|
|
do_QueryInterface(mPresContext->GetContainerWeak());
|
|
if (baseWin && NS_SUCCEEDED(baseWin->GetVisibility(&vis)) && vis) {
|
|
captureRetarget = gCaptureInfo.mRetargetToElement;
|
|
if (!captureRetarget) {
|
|
// A check was already done above to ensure that capturingContent is
|
|
// in this presshell.
|
|
NS_ASSERTION(capturingContent->GetComposedDoc() == GetDocument(),
|
|
"Unexpected document");
|
|
nsIFrame* captureFrame = capturingContent->GetPrimaryFrame();
|
|
if (captureFrame) {
|
|
if (capturingContent->IsHTMLElement(nsGkAtoms::select)) {
|
|
// a dropdown <select> has a child in its selectPopupList and we
|
|
// should capture on that instead.
|
|
nsIFrame* childFrame =
|
|
captureFrame->GetChildList(nsIFrame::kSelectPopupList)
|
|
.FirstChild();
|
|
if (childFrame) {
|
|
captureFrame = childFrame;
|
|
}
|
|
}
|
|
|
|
// scrollable frames should use the scrolling container as
|
|
// the root instead of the document
|
|
nsIScrollableFrame* scrollFrame = do_QueryFrame(captureFrame);
|
|
if (scrollFrame) {
|
|
frame = scrollFrame->GetScrolledFrame();
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
ClearMouseCapture(nullptr);
|
|
capturingContent = nullptr;
|
|
}
|
|
}
|
|
|
|
// The order to generate pointer event is
|
|
// 1. check pending pointer capture.
|
|
// 2. check if there is a capturing content.
|
|
// 3. hit test
|
|
// 4. dispatch pointer events
|
|
// 5. check whether the targets of all Touch instances are in the same
|
|
// document and suppress invalid instances.
|
|
// 6. dispatch mouse or touch events.
|
|
|
|
// Try to keep frame for following check, because frame can be damaged
|
|
// during MaybeProcessPointerCapture.
|
|
{
|
|
AutoWeakFrame frameKeeper(frame);
|
|
PointerEventHandler::MaybeProcessPointerCapture(aEvent);
|
|
// Prevent application crashes, in case damaged frame.
|
|
if (!frameKeeper.IsAlive()) {
|
|
NS_WARNING("Nothing to handle this event!");
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
// Only capture mouse events and pointer events.
|
|
nsCOMPtr<nsIContent> pointerCapturingContent =
|
|
PointerEventHandler::GetPointerCapturingContent(aEvent);
|
|
|
|
if (pointerCapturingContent) {
|
|
frame = pointerCapturingContent->GetPrimaryFrame();
|
|
|
|
if (!frame) {
|
|
RefPtr<PresShell> shell =
|
|
GetShellForEventTarget(nullptr, pointerCapturingContent);
|
|
if (!shell) {
|
|
// If we can't process event for the capturing content, release
|
|
// the capture.
|
|
PointerEventHandler::ReleaseIfCaptureByDescendant(
|
|
pointerCapturingContent);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsCOMPtr<nsIContent> overrideClickTarget =
|
|
GetOverrideClickTarget(aEvent, aFrame);
|
|
|
|
// Dispatch events to the capturing content even it's frame is
|
|
// destroyed.
|
|
PointerEventHandler::DispatchPointerFromMouseOrTouch(
|
|
shell, nullptr, pointerCapturingContent, aEvent, false,
|
|
aEventStatus, nullptr);
|
|
|
|
return shell->HandleEventWithTarget(
|
|
aEvent, nullptr, pointerCapturingContent, aEventStatus, true,
|
|
nullptr, overrideClickTarget);
|
|
}
|
|
}
|
|
|
|
WidgetMouseEvent* mouseEvent = aEvent->AsMouseEvent();
|
|
bool isWindowLevelMouseExit =
|
|
(aEvent->mMessage == eMouseExitFromWidget) &&
|
|
(mouseEvent && mouseEvent->mExitFrom == WidgetMouseEvent::eTopLevel);
|
|
|
|
// Get the frame at the event point. However, don't do this if we're
|
|
// capturing and retargeting the event because the captured frame will
|
|
// be used instead below. Also keep using the root frame if we're dealing
|
|
// with a window-level mouse exit event since we want to start sending
|
|
// mouse out events at the root EventStateManager.
|
|
if (!captureRetarget && !isWindowLevelMouseExit &&
|
|
!pointerCapturingContent) {
|
|
if (aEvent->mClass == eTouchEventClass) {
|
|
frame = TouchManager::SetupTarget(aEvent->AsTouchEvent(), frame);
|
|
} else {
|
|
uint32_t flags = 0;
|
|
nsPoint eventPoint =
|
|
nsLayoutUtils::GetEventCoordinatesRelativeTo(aEvent, frame);
|
|
|
|
if (mouseEvent && mouseEvent->mClass == eMouseEventClass &&
|
|
mouseEvent->mIgnoreRootScrollFrame) {
|
|
flags |= INPUT_IGNORE_ROOT_SCROLL_FRAME;
|
|
}
|
|
nsIFrame* target =
|
|
FindFrameTargetedByInputEvent(aEvent, frame, eventPoint, flags);
|
|
if (target) {
|
|
frame = target;
|
|
}
|
|
}
|
|
}
|
|
|
|
// if a node is capturing the mouse, check if the event needs to be
|
|
// retargeted at the capturing content instead. This will be the case when
|
|
// capture retargeting is being used, no frame was found or the frame's
|
|
// content is not a descendant of the capturing content.
|
|
if (capturingContent && !pointerCapturingContent &&
|
|
(gCaptureInfo.mRetargetToElement || !frame->GetContent() ||
|
|
!nsContentUtils::ContentIsCrossDocDescendantOf(frame->GetContent(),
|
|
capturingContent))) {
|
|
// A check was already done above to ensure that capturingContent is
|
|
// in this presshell.
|
|
NS_ASSERTION(capturingContent->GetComposedDoc() == GetDocument(),
|
|
"Unexpected document");
|
|
nsIFrame* capturingFrame = capturingContent->GetPrimaryFrame();
|
|
if (capturingFrame) {
|
|
frame = capturingFrame;
|
|
}
|
|
}
|
|
|
|
// Suppress mouse event if it's being targeted at an element inside
|
|
// a document which needs events suppressed
|
|
if (aEvent->mClass == eMouseEventClass &&
|
|
frame->PresContext()->Document()->EventHandlingSuppressed()) {
|
|
if (aEvent->mMessage == eMouseDown) {
|
|
mNoDelayedMouseEvents = true;
|
|
} else if (!mNoDelayedMouseEvents &&
|
|
(aEvent->mMessage == eMouseUp ||
|
|
// contextmenu is triggered after right mouseup on Windows and
|
|
// right mousedown on other platforms.
|
|
aEvent->mMessage == eContextMenu)) {
|
|
auto event = MakeUnique<DelayedMouseEvent>(aEvent->AsMouseEvent());
|
|
mDelayedEvents.AppendElement(std::move(event));
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
if (!frame) {
|
|
NS_WARNING("Nothing to handle this event!");
|
|
return NS_OK;
|
|
}
|
|
|
|
RefPtr<PresShell> shell = static_cast<PresShell*>(frame->PresShell());
|
|
// Check if we have an active EventStateManager which isn't the
|
|
// EventStateManager of the current PresContext.
|
|
// If that is the case, and mouse is over some ancestor document,
|
|
// forward event handling to the active document.
|
|
// This way content can get mouse events even when
|
|
// mouse is over the chrome or outside the window.
|
|
//
|
|
// Note, currently for backwards compatibility we don't forward mouse events
|
|
// to the active document when mouse is over some subdocument.
|
|
if (EventStateManager* activeESM =
|
|
EventStateManager::GetActiveEventStateManager()) {
|
|
if (aEvent->mClass == ePointerEventClass ||
|
|
aEvent->HasMouseEventMessage()) {
|
|
if (activeESM != shell->GetPresContext()->EventStateManager()) {
|
|
if (nsPresContext* activeContext = activeESM->GetPresContext()) {
|
|
if (nsIPresShell* activeShell = activeContext->GetPresShell()) {
|
|
if (nsContentUtils::ContentIsCrossDocDescendantOf(
|
|
activeShell->GetDocument(), shell->GetDocument())) {
|
|
shell = static_cast<PresShell*>(activeShell);
|
|
frame = shell->GetRootFrame();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!frame) {
|
|
NS_WARNING("Nothing to handle this event!");
|
|
return NS_OK;
|
|
}
|
|
|
|
nsCOMPtr<nsIContent> targetElement;
|
|
frame->GetContentForEvent(aEvent, getter_AddRefs(targetElement));
|
|
|
|
// If there is no content for this frame, target it anyway. Some
|
|
// frames can be targeted but do not have content, particularly
|
|
// windows with scrolling off.
|
|
if (targetElement) {
|
|
// Bug 103055, bug 185889: mouse events apply to *elements*, not all
|
|
// nodes. Thus we get the nearest element parent here.
|
|
// XXX we leave the frame the same even if we find an element
|
|
// parent, so that the text frame will receive the event (selection
|
|
// and friends are the ones who care about that anyway)
|
|
//
|
|
// We use weak pointers because during this tight loop, the node
|
|
// will *not* go away. And this happens on every mousemove.
|
|
while (targetElement && !targetElement->IsElement()) {
|
|
targetElement = targetElement->GetFlattenedTreeParent();
|
|
}
|
|
|
|
// If we found an element, target it. Otherwise, target *nothing*.
|
|
if (!targetElement) {
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
nsCOMPtr<nsIContent> overrideClickTarget;
|
|
if (PointerEventHandler::IsPointerEventEnabled()) {
|
|
// Dispatch pointer events from the mouse or touch events. Regarding
|
|
// pointer events from mouse, we should dispatch those pointer events to
|
|
// the same target as the source mouse events. We pass the frame found
|
|
// in hit test to PointerEventHandler and dispatch pointer events to it.
|
|
//
|
|
// Regarding pointer events from touch, the behavior is different. Touch
|
|
// events are dispatched to the same target as the target of touchstart.
|
|
// Multiple touch points must be dispatched to the same document. Pointer
|
|
// events from touch can be dispatched to different documents. We Pass the
|
|
// original frame to PointerEventHandler, reentry PresShell::HandleEvent,
|
|
// and do hit test for each point.
|
|
nsIFrame* targetFrame =
|
|
aEvent->mClass == eTouchEventClass ? aFrame : frame;
|
|
|
|
if (pointerCapturingContent) {
|
|
overrideClickTarget = GetOverrideClickTarget(aEvent, aFrame);
|
|
shell = GetShellForEventTarget(nullptr, pointerCapturingContent);
|
|
if (!shell) {
|
|
// If we can't process event for the capturing content, release
|
|
// the capture.
|
|
PointerEventHandler::ReleaseIfCaptureByDescendant(
|
|
pointerCapturingContent);
|
|
return NS_OK;
|
|
}
|
|
|
|
targetFrame = pointerCapturingContent->GetPrimaryFrame();
|
|
frame = targetFrame;
|
|
}
|
|
|
|
AutoWeakFrame weakTargetFrame(targetFrame);
|
|
AutoWeakFrame weakFrame(frame);
|
|
nsCOMPtr<nsIContent> targetContent;
|
|
PointerEventHandler::DispatchPointerFromMouseOrTouch(
|
|
shell, targetFrame, targetElement, aEvent, aDontRetargetEvents,
|
|
aEventStatus, getter_AddRefs(targetContent));
|
|
|
|
if (!weakTargetFrame.IsAlive() && aEvent->mClass == eMouseEventClass) {
|
|
// Spec only defines that mouse events must be dispatched to the same
|
|
// target as the pointer event. If the target is no longer participating
|
|
// in its ownerDocument's tree, fire the event at the original target's
|
|
// nearest ancestor node
|
|
if (!targetContent) {
|
|
return NS_OK;
|
|
}
|
|
frame = targetContent->GetPrimaryFrame();
|
|
shell = GetShellForEventTarget(frame, targetContent);
|
|
if (!shell) {
|
|
return NS_OK;
|
|
}
|
|
} else if (!weakFrame.IsAlive()) {
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
// frame could be null after dispatching pointer events.
|
|
if (aEvent->mClass == eTouchEventClass) {
|
|
if (aEvent->mMessage == eTouchStart) {
|
|
WidgetTouchEvent* touchEvent = aEvent->AsTouchEvent();
|
|
if (nsIFrame* newFrame =
|
|
TouchManager::SuppressInvalidPointsAndGetTargetedFrame(
|
|
touchEvent)) {
|
|
frame = newFrame;
|
|
frame->GetContentForEvent(aEvent, getter_AddRefs(targetElement));
|
|
shell = static_cast<PresShell*>(frame->PresShell());
|
|
}
|
|
} else if (PresShell* newShell = GetShellForTouchEvent(aEvent)) {
|
|
// Touch events (except touchstart) are dispatching to the captured
|
|
// element. Get correct shell from it.
|
|
shell = newShell;
|
|
}
|
|
}
|
|
|
|
nsresult rv;
|
|
|
|
// Handle the event in the correct shell.
|
|
// We pass the subshell's root frame as the frame to start from. This is
|
|
// the only correct alternative; if the event was captured then it
|
|
// must have been captured by us or some ancestor shell and we
|
|
// now ask the subshell to dispatch it normally.
|
|
shell->PushCurrentEventInfo(frame, targetElement);
|
|
rv = shell->HandleEventInternal(aEvent, aEventStatus, true,
|
|
overrideClickTarget);
|
|
#ifdef DEBUG
|
|
shell->ShowEventTargetDebug();
|
|
#endif
|
|
shell->PopCurrentEventInfo();
|
|
return rv;
|
|
}
|
|
|
|
nsresult rv = NS_OK;
|
|
|
|
if (frame) {
|
|
PushCurrentEventInfo(nullptr, nullptr);
|
|
|
|
// key and IME related events go to the focused frame in this DOM window.
|
|
if (aEvent->IsTargetedAtFocusedContent()) {
|
|
mCurrentEventContent = nullptr;
|
|
|
|
nsCOMPtr<nsPIDOMWindowOuter> window = mDocument->GetWindow();
|
|
nsCOMPtr<nsPIDOMWindowOuter> focusedWindow;
|
|
nsCOMPtr<nsIContent> eventTarget = nsFocusManager::GetFocusedDescendant(
|
|
window, nsFocusManager::eOnlyCurrentWindow,
|
|
getter_AddRefs(focusedWindow));
|
|
|
|
// otherwise, if there is no focused content or the focused content has
|
|
// no frame, just use the root content. This ensures that key events
|
|
// still get sent to the window properly if nothing is focused or if a
|
|
// frame goes away while it is focused.
|
|
if (!eventTarget || !eventTarget->GetPrimaryFrame()) {
|
|
eventTarget = mDocument->GetUnfocusedKeyEventTarget();
|
|
}
|
|
|
|
if (aEvent->mMessage == eKeyDown) {
|
|
NS_IF_RELEASE(gKeyDownTarget);
|
|
NS_IF_ADDREF(gKeyDownTarget = eventTarget);
|
|
} else if ((aEvent->mMessage == eKeyPress ||
|
|
aEvent->mMessage == eKeyUp) &&
|
|
gKeyDownTarget) {
|
|
// If a different element is now focused for the keypress/keyup event
|
|
// than what was focused during the keydown event, check if the new
|
|
// focused element is not in a chrome document any more, and if so,
|
|
// retarget the event back at the keydown target. This prevents a
|
|
// content area from grabbing the focus from chrome in-between key
|
|
// events.
|
|
if (eventTarget) {
|
|
bool keyDownIsChrome =
|
|
nsContentUtils::IsChromeDoc(gKeyDownTarget->GetComposedDoc());
|
|
if (keyDownIsChrome !=
|
|
nsContentUtils::IsChromeDoc(eventTarget->GetComposedDoc()) ||
|
|
(keyDownIsChrome && TabParent::GetFrom(eventTarget))) {
|
|
eventTarget = gKeyDownTarget;
|
|
}
|
|
}
|
|
|
|
if (aEvent->mMessage == eKeyUp) {
|
|
NS_RELEASE(gKeyDownTarget);
|
|
}
|
|
}
|
|
|
|
mCurrentEventFrame = nullptr;
|
|
nsIDocument* targetDoc = eventTarget ? eventTarget->OwnerDoc() : nullptr;
|
|
if (targetDoc && targetDoc != mDocument) {
|
|
PopCurrentEventInfo();
|
|
nsCOMPtr<nsIPresShell> shell = targetDoc->GetShell();
|
|
if (shell) {
|
|
rv = static_cast<PresShell*>(shell.get())
|
|
->HandleRetargetedEvent(aEvent, aEventStatus, eventTarget);
|
|
}
|
|
return rv;
|
|
} else {
|
|
mCurrentEventContent = eventTarget;
|
|
}
|
|
|
|
if (!GetCurrentEventContent() || !GetCurrentEventFrame() ||
|
|
InZombieDocument(mCurrentEventContent)) {
|
|
rv = RetargetEventToParent(aEvent, aEventStatus);
|
|
PopCurrentEventInfo();
|
|
return rv;
|
|
}
|
|
} else {
|
|
mCurrentEventFrame = frame;
|
|
}
|
|
if (GetCurrentEventFrame()) {
|
|
rv = HandleEventInternal(aEvent, aEventStatus, true);
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
ShowEventTargetDebug();
|
|
#endif
|
|
PopCurrentEventInfo();
|
|
} else {
|
|
// Activation events need to be dispatched even if no frame was found, since
|
|
// we don't want the focus to be out of sync.
|
|
|
|
if (!NS_EVENT_NEEDS_FRAME(aEvent)) {
|
|
mCurrentEventFrame = nullptr;
|
|
return HandleEventInternal(aEvent, aEventStatus, true);
|
|
} else if (aEvent->HasKeyEventMessage()) {
|
|
// Keypress events in new blank tabs should not be completely thrown away.
|
|
// Retarget them -- the parent chrome shell might make use of them.
|
|
return RetargetEventToParent(aEvent, aEventStatus);
|
|
}
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
nsIDocument* PresShell::GetPrimaryContentDocument() {
|
|
nsPresContext* context = GetPresContext();
|
|
if (!context || !context->IsRoot()) {
|
|
return nullptr;
|
|
}
|
|
|
|
nsCOMPtr<nsIDocShellTreeItem> shellAsTreeItem = context->GetDocShell();
|
|
if (!shellAsTreeItem) {
|
|
return nullptr;
|
|
}
|
|
|
|
nsCOMPtr<nsIDocShellTreeOwner> owner;
|
|
shellAsTreeItem->GetTreeOwner(getter_AddRefs(owner));
|
|
if (!owner) {
|
|
return nullptr;
|
|
}
|
|
|
|
// now get the primary content shell (active tab)
|
|
nsCOMPtr<nsIDocShellTreeItem> item;
|
|
owner->GetPrimaryContentShell(getter_AddRefs(item));
|
|
nsCOMPtr<nsIDocShell> childDocShell = do_QueryInterface(item);
|
|
if (!childDocShell) {
|
|
return nullptr;
|
|
}
|
|
|
|
return childDocShell->GetDocument();
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
void PresShell::ShowEventTargetDebug() {
|
|
if (nsFrame::GetShowEventTargetFrameBorder() && GetCurrentEventFrame()) {
|
|
if (mDrawEventTargetFrame) {
|
|
mDrawEventTargetFrame->InvalidateFrame();
|
|
}
|
|
|
|
mDrawEventTargetFrame = mCurrentEventFrame;
|
|
mDrawEventTargetFrame->InvalidateFrame();
|
|
}
|
|
}
|
|
#endif
|
|
|
|
nsresult PresShell::HandleEventWithTarget(WidgetEvent* aEvent, nsIFrame* aFrame,
|
|
nsIContent* aContent,
|
|
nsEventStatus* aStatus,
|
|
bool aIsHandlingNativeEvent,
|
|
nsIContent** aTargetContent,
|
|
nsIContent* aOverrideClickTarget) {
|
|
#if DEBUG
|
|
MOZ_ASSERT(!aFrame || aFrame->PresContext()->GetPresShell() == this,
|
|
"wrong shell");
|
|
if (aContent) {
|
|
nsIDocument* doc = aContent->GetComposedDoc();
|
|
NS_ASSERTION(doc, "event for content that isn't in a document");
|
|
// NOTE: We don't require that the document still have a PresShell.
|
|
// See bug 1375940.
|
|
}
|
|
#endif
|
|
NS_ENSURE_STATE(!aContent || aContent->GetComposedDoc() == mDocument);
|
|
AutoPointerEventTargetUpdater updater(this, aEvent, aFrame, aTargetContent);
|
|
PushCurrentEventInfo(aFrame, aContent);
|
|
nsresult rv =
|
|
HandleEventInternal(aEvent, aStatus, false, aOverrideClickTarget);
|
|
PopCurrentEventInfo();
|
|
return rv;
|
|
}
|
|
|
|
nsresult PresShell::HandleEventInternal(WidgetEvent* aEvent,
|
|
nsEventStatus* aStatus,
|
|
bool aIsHandlingNativeEvent,
|
|
nsIContent* aOverrideClickTarget) {
|
|
RefPtr<EventStateManager> manager = mPresContext->EventStateManager();
|
|
nsresult rv = NS_OK;
|
|
|
|
if (!NS_EVENT_NEEDS_FRAME(aEvent) || GetCurrentEventFrame() ||
|
|
GetCurrentEventContent()) {
|
|
bool touchIsNew = false;
|
|
bool isHandlingUserInput = false;
|
|
|
|
if (mCurrentEventContent && aEvent->IsTargetedAtFocusedWindow()) {
|
|
nsFocusManager* fm = nsFocusManager::GetFocusManager();
|
|
if (fm) {
|
|
fm->FlushBeforeEventHandlingIfNeeded(mCurrentEventContent);
|
|
}
|
|
}
|
|
|
|
// XXX How about IME events and input events for plugins?
|
|
if (aEvent->IsTrusted()) {
|
|
if (aEvent->IsUserAction()) {
|
|
mHasHandledUserInput = true;
|
|
}
|
|
|
|
switch (aEvent->mMessage) {
|
|
case eKeyPress:
|
|
case eKeyDown:
|
|
case eKeyUp: {
|
|
nsIDocument* doc = GetCurrentEventContent()
|
|
? mCurrentEventContent->OwnerDoc()
|
|
: nullptr;
|
|
auto keyCode = aEvent->AsKeyboardEvent()->mKeyCode;
|
|
if (keyCode == NS_VK_ESCAPE) {
|
|
nsIDocument* root = nsContentUtils::GetRootDocument(doc);
|
|
if (root && root->GetFullscreenElement()) {
|
|
// Prevent default action on ESC key press when exiting
|
|
// DOM fullscreen mode. This prevents the browser ESC key
|
|
// handler from stopping all loads in the document, which
|
|
// would cause <video> loads to stop.
|
|
// XXX We need to claim the Escape key event which will be
|
|
// dispatched only into chrome is already consumed by
|
|
// content because we need to prevent its default here
|
|
// for some reasons (not sure) but we need to detect
|
|
// if a chrome event handler will call PreventDefault()
|
|
// again and check it later.
|
|
aEvent->PreventDefaultBeforeDispatch(
|
|
CrossProcessForwarding::eStop);
|
|
aEvent->mFlags.mOnlyChromeDispatch = true;
|
|
|
|
// The event listeners in chrome can prevent this ESC behavior by
|
|
// calling prevent default on the preceding keydown/press events.
|
|
if (!mIsLastChromeOnlyEscapeKeyConsumed &&
|
|
aEvent->mMessage == eKeyUp) {
|
|
// ESC key released while in DOM fullscreen mode.
|
|
// Fully exit all browser windows and documents from
|
|
// fullscreen mode.
|
|
nsIDocument::AsyncExitFullscreen(nullptr);
|
|
}
|
|
}
|
|
nsCOMPtr<nsIDocument> pointerLockedDoc =
|
|
do_QueryReferent(EventStateManager::sPointerLockedDoc);
|
|
if (!mIsLastChromeOnlyEscapeKeyConsumed && pointerLockedDoc) {
|
|
// XXX See above comment to understand the reason why this needs
|
|
// to claim that the Escape key event is consumed by content
|
|
// even though it will be dispatched only into chrome.
|
|
aEvent->PreventDefaultBeforeDispatch(
|
|
CrossProcessForwarding::eStop);
|
|
aEvent->mFlags.mOnlyChromeDispatch = true;
|
|
if (aEvent->mMessage == eKeyUp) {
|
|
nsIDocument::UnlockPointer();
|
|
}
|
|
}
|
|
}
|
|
if (keyCode != NS_VK_ESCAPE && keyCode != NS_VK_SHIFT &&
|
|
keyCode != NS_VK_CONTROL && keyCode != NS_VK_ALT &&
|
|
keyCode != NS_VK_WIN && keyCode != NS_VK_META) {
|
|
// Allow keys other than ESC and modifiers be marked as a
|
|
// valid user input for triggering popup, fullscreen, and
|
|
// pointer lock.
|
|
isHandlingUserInput = true;
|
|
mPresContext->RecordInteractionTime(
|
|
nsPresContext::InteractionType::eKeyInteraction,
|
|
aEvent->mTimeStamp);
|
|
}
|
|
|
|
Telemetry::AccumulateTimeDelta(
|
|
Telemetry::INPUT_EVENT_QUEUED_KEYBOARD_MS, aEvent->mTimeStamp);
|
|
break;
|
|
}
|
|
case eMouseDown:
|
|
case eMouseUp:
|
|
Telemetry::AccumulateTimeDelta(Telemetry::INPUT_EVENT_QUEUED_CLICK_MS,
|
|
aEvent->mTimeStamp);
|
|
MOZ_FALLTHROUGH;
|
|
case ePointerDown:
|
|
case ePointerUp:
|
|
isHandlingUserInput = true;
|
|
mPresContext->RecordInteractionTime(
|
|
nsPresContext::InteractionType::eClickInteraction,
|
|
aEvent->mTimeStamp);
|
|
break;
|
|
|
|
case eMouseMove:
|
|
if (aEvent->mFlags.mHandledByAPZ) {
|
|
Telemetry::AccumulateTimeDelta(
|
|
Telemetry::INPUT_EVENT_QUEUED_APZ_MOUSE_MOVE_MS,
|
|
aEvent->mTimeStamp);
|
|
}
|
|
break;
|
|
|
|
case eDrop: {
|
|
nsCOMPtr<nsIDragSession> session = nsContentUtils::GetDragSession();
|
|
if (session) {
|
|
bool onlyChromeDrop = false;
|
|
session->GetOnlyChromeDrop(&onlyChromeDrop);
|
|
if (onlyChromeDrop) {
|
|
aEvent->mFlags.mOnlyChromeDispatch = true;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
|
|
case eWheel:
|
|
if (aEvent->mFlags.mHandledByAPZ) {
|
|
Telemetry::AccumulateTimeDelta(
|
|
Telemetry::INPUT_EVENT_QUEUED_APZ_WHEEL_MS, aEvent->mTimeStamp);
|
|
}
|
|
break;
|
|
|
|
case eTouchMove:
|
|
if (aEvent->mFlags.mHandledByAPZ) {
|
|
Telemetry::AccumulateTimeDelta(
|
|
Telemetry::INPUT_EVENT_QUEUED_APZ_TOUCH_MOVE_MS,
|
|
aEvent->mTimeStamp);
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (!mTouchManager.PreHandleEvent(aEvent, aStatus, touchIsNew,
|
|
isHandlingUserInput,
|
|
mCurrentEventContent)) {
|
|
return NS_OK;
|
|
}
|
|
}
|
|
|
|
if (aEvent->mMessage == eContextMenu) {
|
|
WidgetMouseEvent* mouseEvent = aEvent->AsMouseEvent();
|
|
if (mouseEvent->IsContextMenuKeyEvent() &&
|
|
!AdjustContextMenuKeyEvent(mouseEvent)) {
|
|
return NS_OK;
|
|
}
|
|
if (mouseEvent->IsShift()) {
|
|
aEvent->mFlags.mOnlyChromeDispatch = true;
|
|
aEvent->mFlags.mRetargetToNonNativeAnonymous = true;
|
|
}
|
|
}
|
|
|
|
AutoHandlingUserInputStatePusher userInpStatePusher(isHandlingUserInput,
|
|
aEvent, mDocument);
|
|
|
|
if (aEvent->IsTrusted() && aEvent->mMessage == eMouseMove) {
|
|
nsIPresShell::AllowMouseCapture(
|
|
EventStateManager::GetActiveEventStateManager() == manager);
|
|
|
|
mPresContext->RecordInteractionTime(
|
|
nsPresContext::InteractionType::eMouseMoveInteraction,
|
|
aEvent->mTimeStamp);
|
|
}
|
|
|
|
nsAutoPopupStatePusher popupStatePusher(
|
|
PopupBlocker::GetEventPopupControlState(aEvent));
|
|
|
|
// FIXME. If the event was reused, we need to clear the old target,
|
|
// bug 329430
|
|
aEvent->mTarget = nullptr;
|
|
|
|
TimeStamp handlerStartTime = TimeStamp::Now();
|
|
|
|
// 1. Give event to event manager for pre event state changes and
|
|
// generation of synthetic events.
|
|
rv = manager->PreHandleEvent(mPresContext, aEvent, mCurrentEventFrame,
|
|
mCurrentEventContent, aStatus,
|
|
aOverrideClickTarget);
|
|
|
|
// 2. Give event to the DOM for third party and JS use.
|
|
if (NS_SUCCEEDED(rv)) {
|
|
bool wasHandlingKeyBoardEvent = nsContentUtils::IsHandlingKeyBoardEvent();
|
|
if (aEvent->mClass == eKeyboardEventClass) {
|
|
nsContentUtils::SetIsHandlingKeyBoardEvent(true);
|
|
}
|
|
// If EventStateManager or something wants reply from remote process and
|
|
// needs to win any other event listeners in chrome, the event is both
|
|
// stopped its propagation and marked as "waiting reply from remote
|
|
// process". In this case, PresShell shouldn't dispatch the event into
|
|
// the DOM tree because they don't have a chance to stop propagation in
|
|
// the system event group. On the other hand, if its propagation is not
|
|
// stopped, that means that the event may be reserved by chrome. If it's
|
|
// reserved by chrome, the event shouldn't be sent to any remote
|
|
// processes. In this case, PresShell needs to dispatch the event to
|
|
// the DOM tree for checking if it's reserved.
|
|
if (aEvent->IsAllowedToDispatchDOMEvent() &&
|
|
!(aEvent->PropagationStopped() &&
|
|
aEvent->IsWaitingReplyFromRemoteProcess())) {
|
|
MOZ_ASSERT(nsContentUtils::IsSafeToRunScript(),
|
|
"Somebody changed aEvent to cause a DOM event!");
|
|
nsPresShellEventCB eventCB(this);
|
|
if (nsIFrame* target = GetCurrentEventFrame()) {
|
|
if (target->OnlySystemGroupDispatch(aEvent->mMessage)) {
|
|
aEvent->StopPropagation();
|
|
}
|
|
}
|
|
if (aEvent->mClass == eTouchEventClass) {
|
|
DispatchTouchEventToDOM(aEvent, aStatus, &eventCB, touchIsNew);
|
|
} else {
|
|
DispatchEventToDOM(aEvent, aStatus, &eventCB);
|
|
}
|
|
}
|
|
|
|
nsContentUtils::SetIsHandlingKeyBoardEvent(wasHandlingKeyBoardEvent);
|
|
|
|
if (aEvent->mMessage == ePointerUp ||
|
|
aEvent->mMessage == ePointerCancel) {
|
|
// Implicitly releasing capture for given pointer.
|
|
// ePointerLostCapture should be send after ePointerUp or
|
|
// ePointerCancel.
|
|
WidgetPointerEvent* pointerEvent = aEvent->AsPointerEvent();
|
|
MOZ_ASSERT(pointerEvent);
|
|
PointerEventHandler::ReleasePointerCaptureById(pointerEvent->pointerId);
|
|
PointerEventHandler::CheckPointerCaptureState(pointerEvent);
|
|
}
|
|
|
|
// 3. Give event to event manager for post event state changes and
|
|
// generation of synthetic events.
|
|
if (!mIsDestroying && NS_SUCCEEDED(rv)) {
|
|
rv = manager->PostHandleEvent(mPresContext, aEvent,
|
|
GetCurrentEventFrame(), aStatus,
|
|
aOverrideClickTarget);
|
|
}
|
|
}
|
|
|
|
if (!mIsDestroying && aIsHandlingNativeEvent) {
|
|
// Ensure that notifications to IME should be sent before getting next
|
|
// native event from the event queue.
|
|
// XXX Should we check the event message or event class instead of
|
|
// using aIsHandlingNativeEvent?
|
|
manager->TryToFlushPendingNotificationsToIME();
|
|
}
|
|
|
|
switch (aEvent->mMessage) {
|
|
case eKeyPress:
|
|
case eKeyDown:
|
|
case eKeyUp: {
|
|
if (aEvent->AsKeyboardEvent()->mKeyCode == NS_VK_ESCAPE) {
|
|
if (aEvent->mMessage == eKeyUp) {
|
|
// Reset this flag after key up is handled.
|
|
mIsLastChromeOnlyEscapeKeyConsumed = false;
|
|
} else {
|
|
if (aEvent->mFlags.mOnlyChromeDispatch &&
|
|
aEvent->mFlags.mDefaultPreventedByChrome) {
|
|
mIsLastChromeOnlyEscapeKeyConsumed = true;
|
|
}
|
|
}
|
|
}
|
|
if (aEvent->mMessage == eKeyDown) {
|
|
mIsLastKeyDownCanceled = aEvent->mFlags.mDefaultPrevented;
|
|
}
|
|
break;
|
|
}
|
|
case eMouseUp:
|
|
// reset the capturing content now that the mouse button is up
|
|
SetCapturingContent(nullptr, 0);
|
|
break;
|
|
case eMouseMove:
|
|
nsIPresShell::AllowMouseCapture(false);
|
|
break;
|
|
case eDrag:
|
|
case eDragEnd:
|
|
case eDragEnter:
|
|
case eDragExit:
|
|
case eDragLeave:
|
|
case eDragOver:
|
|
case eDrop: {
|
|
// After any drag event other than dragstart (which is handled
|
|
// separately, as we need to collect the data first), the DataTransfer
|
|
// needs to be made protected, and then disconnected.
|
|
DataTransfer* dataTransfer = aEvent->AsDragEvent()->mDataTransfer;
|
|
if (dataTransfer) {
|
|
dataTransfer->Disconnect();
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (aEvent->IsTrusted() && aEvent->mTimeStamp > mLastOSWake) {
|
|
switch (aEvent->mMessage) {
|
|
case eKeyPress:
|
|
case eKeyDown:
|
|
case eKeyUp:
|
|
Telemetry::AccumulateTimeDelta(
|
|
Telemetry::INPUT_EVENT_HANDLED_KEYBOARD_MS, handlerStartTime);
|
|
break;
|
|
case eMouseDown:
|
|
Telemetry::AccumulateTimeDelta(
|
|
Telemetry::INPUT_EVENT_HANDLED_MOUSE_DOWN_MS, handlerStartTime);
|
|
break;
|
|
case eMouseUp:
|
|
Telemetry::AccumulateTimeDelta(
|
|
Telemetry::INPUT_EVENT_HANDLED_MOUSE_UP_MS, handlerStartTime);
|
|
break;
|
|
case eMouseMove:
|
|
if (aEvent->mFlags.mHandledByAPZ) {
|
|
Telemetry::AccumulateTimeDelta(
|
|
Telemetry::INPUT_EVENT_HANDLED_APZ_MOUSE_MOVE_MS,
|
|
handlerStartTime);
|
|
}
|
|
break;
|
|
case eWheel:
|
|
if (aEvent->mFlags.mHandledByAPZ) {
|
|
Telemetry::AccumulateTimeDelta(
|
|
Telemetry::INPUT_EVENT_HANDLED_APZ_WHEEL_MS, handlerStartTime);
|
|
}
|
|
break;
|
|
case eTouchMove:
|
|
if (aEvent->mFlags.mHandledByAPZ) {
|
|
Telemetry::AccumulateTimeDelta(
|
|
Telemetry::INPUT_EVENT_HANDLED_APZ_TOUCH_MOVE_MS,
|
|
handlerStartTime);
|
|
}
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (Telemetry::CanRecordBase() && !aEvent->mTimeStamp.IsNull() &&
|
|
aEvent->mTimeStamp > mLastOSWake && aEvent->AsInputEvent()) {
|
|
TimeStamp now = TimeStamp::Now();
|
|
double millis = (now - aEvent->mTimeStamp).ToMilliseconds();
|
|
Telemetry::Accumulate(Telemetry::INPUT_EVENT_RESPONSE_MS, millis);
|
|
if (mDocument &&
|
|
mDocument->GetReadyStateEnum() != nsIDocument::READYSTATE_COMPLETE) {
|
|
Telemetry::Accumulate(Telemetry::LOAD_INPUT_EVENT_RESPONSE_MS, millis);
|
|
}
|
|
|
|
if (!sLastInputProcessed || sLastInputProcessed < aEvent->mTimeStamp) {
|
|
if (sLastInputProcessed) {
|
|
// This input event was created after we handled the last one.
|
|
// Accumulate the previous events' coalesced duration.
|
|
double lastMillis =
|
|
(sLastInputProcessed - sLastInputCreated).ToMilliseconds();
|
|
Telemetry::Accumulate(Telemetry::INPUT_EVENT_RESPONSE_COALESCED_MS,
|
|
lastMillis);
|
|
|
|
if (MOZ_UNLIKELY(!sProcessInteractable)) {
|
|
// For content process, we use the ready state of
|
|
// top-level-content-document to know if the process has finished the
|
|
// start-up.
|
|
// For parent process, see the topic
|
|
// 'sessionstore-one-or-no-tab-restored' in PresShell::Observe.
|
|
if (XRE_IsContentProcess() && mDocument &&
|
|
mDocument->IsTopLevelContentDocument()) {
|
|
switch (mDocument->GetReadyStateEnum()) {
|
|
case nsIDocument::READYSTATE_INTERACTIVE:
|
|
case nsIDocument::READYSTATE_COMPLETE:
|
|
sProcessInteractable = true;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (MOZ_LIKELY(sProcessInteractable)) {
|
|
Telemetry::Accumulate(Telemetry::INPUT_EVENT_RESPONSE_POST_STARTUP_MS,
|
|
lastMillis);
|
|
} else {
|
|
Telemetry::Accumulate(Telemetry::INPUT_EVENT_RESPONSE_STARTUP_MS,
|
|
lastMillis);
|
|
}
|
|
}
|
|
sLastInputCreated = aEvent->mTimeStamp;
|
|
} else if (aEvent->mTimeStamp < sLastInputCreated) {
|
|
// This event was created before the last input. May be processing out
|
|
// of order, so coalesce backwards, too.
|
|
sLastInputCreated = aEvent->mTimeStamp;
|
|
}
|
|
sLastInputProcessed = now;
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
static already_AddRefed<nsIURI> GetDocumentURIToCompareWithBlacklist(
|
|
PresShell& aPresShell) {
|
|
nsPresContext* presContext = aPresShell.GetPresContext();
|
|
if (NS_WARN_IF(!presContext)) {
|
|
return nullptr;
|
|
}
|
|
// If the document is sandboxed document or data: document, we should
|
|
// get URI of the parent document.
|
|
for (nsIDocument* document = presContext->Document();
|
|
document && document->IsContentDocument();
|
|
document = document->GetParentDocument()) {
|
|
// The document URI may be about:blank even if it comes from actual web
|
|
// site. Therefore, we need to check the URI of its principal.
|
|
nsIPrincipal* principal = document->NodePrincipal();
|
|
if (principal->GetIsNullPrincipal()) {
|
|
continue;
|
|
}
|
|
nsCOMPtr<nsIURI> uri;
|
|
principal->GetURI(getter_AddRefs(uri));
|
|
return uri.forget();
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
nsresult PresShell::DispatchEventToDOM(WidgetEvent* aEvent,
|
|
nsEventStatus* aStatus,
|
|
nsPresShellEventCB* aEventCB) {
|
|
nsresult rv = NS_OK;
|
|
nsCOMPtr<nsINode> eventTarget = mCurrentEventContent.get();
|
|
nsPresShellEventCB* eventCBPtr = aEventCB;
|
|
if (!eventTarget) {
|
|
nsCOMPtr<nsIContent> targetContent;
|
|
if (mCurrentEventFrame) {
|
|
rv = mCurrentEventFrame->GetContentForEvent(
|
|
aEvent, getter_AddRefs(targetContent));
|
|
}
|
|
if (NS_SUCCEEDED(rv) && targetContent) {
|
|
eventTarget = targetContent;
|
|
} else if (mDocument) {
|
|
eventTarget = mDocument;
|
|
// If we don't have any content, the callback wouldn't probably
|
|
// do nothing.
|
|
eventCBPtr = nullptr;
|
|
}
|
|
}
|
|
if (eventTarget) {
|
|
if (aEvent->IsBlockedForFingerprintingResistance()) {
|
|
aEvent->mFlags.mOnlySystemGroupDispatchInContent = true;
|
|
} else if (aEvent->mMessage == eKeyPress) {
|
|
// If eKeyPress event is marked as not dispatched in the default event
|
|
// group in web content, it's caused by non-printable key or key
|
|
// combination. In this case, UI Events declares that browsers
|
|
// shouldn't dispatch keypress event. However, some web apps may be
|
|
// broken with this strict behavior due to historical issue.
|
|
// Therefore, we need to keep dispatching keypress event for such keys
|
|
// even with breaking the standard.
|
|
// Similarly, the other browsers sets non-zero value of keyCode or
|
|
// charCode of keypress event to the other. Therefore, we should
|
|
// behave so, however, some web apps may be broken. On such web apps,
|
|
// we should keep using legacy our behavior.
|
|
if (!mInitializedWithKeyPressEventDispatchingBlacklist) {
|
|
mInitializedWithKeyPressEventDispatchingBlacklist = true;
|
|
nsCOMPtr<nsIURI> uri = GetDocumentURIToCompareWithBlacklist(*this);
|
|
mForceDispatchKeyPressEventsForNonPrintableKeys =
|
|
nsContentUtils::IsURIInPrefList(
|
|
uri,
|
|
"dom.keyboardevent.keypress.hack.dispatch_non_printable_keys");
|
|
mForceUseLegacyKeyCodeAndCharCodeValues =
|
|
nsContentUtils::IsURIInPrefList(uri,
|
|
"dom.keyboardevent.keypress.hack."
|
|
"use_legacy_keycode_and_charcode");
|
|
}
|
|
if (mForceDispatchKeyPressEventsForNonPrintableKeys) {
|
|
aEvent->mFlags.mOnlySystemGroupDispatchInContent = false;
|
|
}
|
|
if (mForceUseLegacyKeyCodeAndCharCodeValues) {
|
|
aEvent->AsKeyboardEvent()->mUseLegacyKeyCodeAndCharCodeValues = true;
|
|
}
|
|
}
|
|
|
|
if (aEvent->mClass == eCompositionEventClass) {
|
|
IMEStateManager::DispatchCompositionEvent(eventTarget, mPresContext,
|
|
aEvent->AsCompositionEvent(),
|
|
aStatus, eventCBPtr);
|
|
} else {
|
|
EventDispatcher::Dispatch(eventTarget, mPresContext, aEvent, nullptr,
|
|
aStatus, eventCBPtr);
|
|
}
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
void PresShell::DispatchTouchEventToDOM(WidgetEvent* aEvent,
|
|
nsEventStatus* aStatus,
|
|
nsPresShellEventCB* aEventCB,
|
|
bool aTouchIsNew) {
|
|
// calling preventDefault on touchstart or the first touchmove for a
|
|
// point prevents mouse events. calling it on the touchend should
|
|
// prevent click dispatching.
|
|
bool canPrevent = (aEvent->mMessage == eTouchStart) ||
|
|
(aEvent->mMessage == eTouchMove && aTouchIsNew) ||
|
|
(aEvent->mMessage == eTouchEnd);
|
|
bool preventDefault = false;
|
|
nsEventStatus tmpStatus = nsEventStatus_eIgnore;
|
|
WidgetTouchEvent* touchEvent = aEvent->AsTouchEvent();
|
|
|
|
// loop over all touches and dispatch events on any that have changed
|
|
for (dom::Touch* touch : touchEvent->mTouches) {
|
|
// We should remove all suppressed touch instances in
|
|
// TouchManager::PreHandleEvent.
|
|
MOZ_ASSERT(!touch->mIsTouchEventSuppressed);
|
|
|
|
if (!touch || !touch->mChanged) {
|
|
continue;
|
|
}
|
|
|
|
nsCOMPtr<EventTarget> targetPtr = touch->mTarget;
|
|
nsCOMPtr<nsIContent> content = do_QueryInterface(targetPtr);
|
|
if (!content) {
|
|
continue;
|
|
}
|
|
|
|
nsIDocument* doc = content->OwnerDoc();
|
|
nsIContent* capturingContent = GetCapturingContent();
|
|
if (capturingContent) {
|
|
if (capturingContent->OwnerDoc() != doc) {
|
|
// Wrong document, don't dispatch anything.
|
|
continue;
|
|
}
|
|
content = capturingContent;
|
|
}
|
|
// copy the event
|
|
WidgetTouchEvent newEvent(touchEvent->IsTrusted(), touchEvent->mMessage,
|
|
touchEvent->mWidget);
|
|
newEvent.AssignTouchEventData(*touchEvent, false);
|
|
newEvent.mTarget = targetPtr;
|
|
newEvent.mFlags.mHandledByAPZ = touchEvent->mFlags.mHandledByAPZ;
|
|
|
|
RefPtr<PresShell> contentPresShell;
|
|
if (doc == mDocument) {
|
|
contentPresShell = static_cast<PresShell*>(doc->GetShell());
|
|
if (contentPresShell) {
|
|
// XXXsmaug huge hack. Pushing possibly capturing content,
|
|
// even though event target is something else.
|
|
contentPresShell->PushCurrentEventInfo(content->GetPrimaryFrame(),
|
|
content);
|
|
}
|
|
}
|
|
|
|
nsPresContext* context = doc->GetPresContext();
|
|
if (!context) {
|
|
continue;
|
|
}
|
|
|
|
tmpStatus = nsEventStatus_eIgnore;
|
|
EventDispatcher::Dispatch(targetPtr, context, &newEvent, nullptr,
|
|
&tmpStatus, aEventCB);
|
|
if (nsEventStatus_eConsumeNoDefault == tmpStatus ||
|
|
newEvent.mFlags.mMultipleActionsPrevented) {
|
|
preventDefault = true;
|
|
}
|
|
|
|
if (newEvent.mFlags.mMultipleActionsPrevented) {
|
|
touchEvent->mFlags.mMultipleActionsPrevented = true;
|
|
}
|
|
|
|
if (contentPresShell) {
|
|
contentPresShell->PopCurrentEventInfo();
|
|
}
|
|
}
|
|
|
|
if (preventDefault && canPrevent) {
|
|
*aStatus = nsEventStatus_eConsumeNoDefault;
|
|
} else {
|
|
*aStatus = nsEventStatus_eIgnore;
|
|
}
|
|
}
|
|
|
|
// Dispatch event to content only (NOT full processing)
|
|
// See also HandleEventWithTarget which does full event processing.
|
|
nsresult PresShell::HandleDOMEventWithTarget(nsIContent* aTargetContent,
|
|
WidgetEvent* aEvent,
|
|
nsEventStatus* aStatus) {
|
|
nsresult rv = NS_OK;
|
|
|
|
PushCurrentEventInfo(nullptr, aTargetContent);
|
|
|
|
// Bug 41013: Check if the event should be dispatched to content.
|
|
// It's possible that we are in the middle of destroying the window
|
|
// and the js context is out of date. This check detects the case
|
|
// that caused a crash in bug 41013, but there may be a better way
|
|
// to handle this situation!
|
|
nsCOMPtr<nsISupports> container = mPresContext->GetContainerWeak();
|
|
if (container) {
|
|
// Dispatch event to content
|
|
rv = EventDispatcher::Dispatch(aTargetContent, mPresContext, aEvent,
|
|
nullptr, aStatus);
|
|
}
|
|
|
|
PopCurrentEventInfo();
|
|
return rv;
|
|
}
|
|
|
|
// See the method above.
|
|
nsresult PresShell::HandleDOMEventWithTarget(nsIContent* aTargetContent,
|
|
Event* aEvent,
|
|
nsEventStatus* aStatus) {
|
|
nsresult rv = NS_OK;
|
|
|
|
PushCurrentEventInfo(nullptr, aTargetContent);
|
|
nsCOMPtr<nsISupports> container = mPresContext->GetContainerWeak();
|
|
if (container) {
|
|
rv = EventDispatcher::DispatchDOMEvent(aTargetContent, nullptr, aEvent,
|
|
mPresContext, aStatus);
|
|
}
|
|
|
|
PopCurrentEventInfo();
|
|
return rv;
|
|
}
|
|
|
|
bool PresShell::AdjustContextMenuKeyEvent(WidgetMouseEvent* aEvent) {
|
|
#ifdef MOZ_XUL
|
|
// if a menu is open, open the context menu relative to the active item on the
|
|
// menu.
|
|
nsXULPopupManager* pm = nsXULPopupManager::GetInstance();
|
|
if (pm) {
|
|
nsIFrame* popupFrame = pm->GetTopPopup(ePopupTypeMenu);
|
|
if (popupFrame) {
|
|
nsIFrame* itemFrame =
|
|
(static_cast<nsMenuPopupFrame*>(popupFrame))->GetCurrentMenuItem();
|
|
if (!itemFrame) itemFrame = popupFrame;
|
|
|
|
nsCOMPtr<nsIWidget> widget = popupFrame->GetNearestWidget();
|
|
aEvent->mWidget = widget;
|
|
LayoutDeviceIntPoint widgetPoint = widget->WidgetToScreenOffset();
|
|
aEvent->mRefPoint = LayoutDeviceIntPoint::FromAppUnitsToNearest(
|
|
itemFrame->GetScreenRectInAppUnits().BottomLeft(),
|
|
itemFrame->PresContext()->AppUnitsPerDevPixel()) -
|
|
widgetPoint;
|
|
|
|
mCurrentEventContent = itemFrame->GetContent();
|
|
mCurrentEventFrame = itemFrame;
|
|
|
|
return true;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
// If we're here because of the key-equiv for showing context menus, we
|
|
// have to twiddle with the NS event to make sure the context menu comes
|
|
// up in the upper left of the relevant content area before we create
|
|
// the DOM event. Since we never call InitMouseEvent() on the event,
|
|
// the client X/Y will be 0,0. We can make use of that if the widget is null.
|
|
// Use the root view manager's widget since it's most likely to have one,
|
|
// and the coordinates returned by GetCurrentItemAndPositionForElement
|
|
// are relative to the widget of the root of the root view manager.
|
|
nsRootPresContext* rootPC = mPresContext->GetRootPresContext();
|
|
aEvent->mRefPoint = LayoutDeviceIntPoint(0, 0);
|
|
if (rootPC) {
|
|
rootPC->PresShell()->GetViewManager()->GetRootWidget(
|
|
getter_AddRefs(aEvent->mWidget));
|
|
|
|
if (aEvent->mWidget) {
|
|
// default the refpoint to the topleft of our document
|
|
nsPoint offset(0, 0);
|
|
nsIFrame* rootFrame = mFrameConstructor->GetRootFrame();
|
|
if (rootFrame) {
|
|
nsView* view = rootFrame->GetClosestView(&offset);
|
|
offset += view->GetOffsetToWidget(aEvent->mWidget);
|
|
aEvent->mRefPoint = LayoutDeviceIntPoint::FromAppUnitsToNearest(
|
|
offset, mPresContext->AppUnitsPerDevPixel());
|
|
}
|
|
}
|
|
} else {
|
|
aEvent->mWidget = nullptr;
|
|
}
|
|
|
|
// see if we should use the caret position for the popup
|
|
LayoutDeviceIntPoint caretPoint;
|
|
// Beware! This may flush notifications via synchronous
|
|
// ScrollSelectionIntoView.
|
|
if (PrepareToUseCaretPosition(aEvent->mWidget, caretPoint)) {
|
|
// caret position is good
|
|
aEvent->mRefPoint = caretPoint;
|
|
return true;
|
|
}
|
|
|
|
// If we're here because of the key-equiv for showing context menus, we
|
|
// have to reset the event target to the currently focused element. Get it
|
|
// from the focus controller.
|
|
RefPtr<Element> currentFocus;
|
|
nsFocusManager* fm = nsFocusManager::GetFocusManager();
|
|
if (fm) {
|
|
currentFocus = fm->GetFocusedElement();
|
|
}
|
|
|
|
// Reset event coordinates relative to focused frame in view
|
|
if (currentFocus) {
|
|
nsCOMPtr<nsIContent> currentPointElement;
|
|
GetCurrentItemAndPositionForElement(currentFocus,
|
|
getter_AddRefs(currentPointElement),
|
|
aEvent->mRefPoint, aEvent->mWidget);
|
|
if (currentPointElement) {
|
|
mCurrentEventContent = currentPointElement;
|
|
mCurrentEventFrame = nullptr;
|
|
GetCurrentEventFrame();
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
// PresShell::PrepareToUseCaretPosition
|
|
//
|
|
// This checks to see if we should use the caret position for popup context
|
|
// menus. Returns true if the caret position should be used, and the
|
|
// coordinates of that position is returned in aTargetPt. This function
|
|
// will also scroll the window as needed to make the caret visible.
|
|
//
|
|
// The event widget should be the widget that generated the event, and
|
|
// whose coordinate system the resulting event's mRefPoint should be
|
|
// relative to. The returned point is in device pixels realtive to the
|
|
// widget passed in.
|
|
bool PresShell::PrepareToUseCaretPosition(nsIWidget* aEventWidget,
|
|
LayoutDeviceIntPoint& aTargetPt) {
|
|
nsresult rv;
|
|
|
|
// check caret visibility
|
|
RefPtr<nsCaret> caret = GetCaret();
|
|
NS_ENSURE_TRUE(caret, false);
|
|
|
|
bool caretVisible = caret->IsVisible();
|
|
if (!caretVisible) return false;
|
|
|
|
// caret selection, this is a temporary weak reference, so no refcounting is
|
|
// needed
|
|
Selection* domSelection = caret->GetSelection();
|
|
NS_ENSURE_TRUE(domSelection, false);
|
|
|
|
// since the match could be an anonymous textnode inside a
|
|
// <textarea> or text <input>, we need to get the outer frame
|
|
// note: frames are not refcounted
|
|
nsIFrame* frame = nullptr; // may be nullptr
|
|
nsINode* node = domSelection->GetFocusNode();
|
|
NS_ENSURE_TRUE(node, false);
|
|
nsCOMPtr<nsIContent> content = nsIContent::FromNode(node);
|
|
if (content) {
|
|
nsIContent* nonNative = content->FindFirstNonChromeOnlyAccessContent();
|
|
content = nonNative;
|
|
}
|
|
|
|
if (content) {
|
|
// It seems like ScrollSelectionIntoView should be enough, but it's
|
|
// not. The problem is that scrolling the selection into view when it is
|
|
// below the current viewport will align the top line of the frame exactly
|
|
// with the bottom of the window. This is fine, BUT, the popup event causes
|
|
// the control to be re-focused which does this exact call to
|
|
// ScrollContentIntoView, which has a one-pixel disagreement of whether the
|
|
// frame is actually in view. The result is that the frame is aligned with
|
|
// the top of the window, but the menu is still at the bottom.
|
|
//
|
|
// Doing this call first forces the frame to be in view, eliminating the
|
|
// problem. The only difference in the result is that if your cursor is in
|
|
// an edit box below the current view, you'll get the edit box aligned with
|
|
// the top of the window. This is arguably better behavior anyway.
|
|
rv = ScrollContentIntoView(
|
|
content,
|
|
nsIPresShell::ScrollAxis(nsIPresShell::SCROLL_MINIMUM,
|
|
nsIPresShell::SCROLL_IF_NOT_VISIBLE),
|
|
nsIPresShell::ScrollAxis(nsIPresShell::SCROLL_MINIMUM,
|
|
nsIPresShell::SCROLL_IF_NOT_VISIBLE),
|
|
nsIPresShell::SCROLL_OVERFLOW_HIDDEN);
|
|
NS_ENSURE_SUCCESS(rv, false);
|
|
frame = content->GetPrimaryFrame();
|
|
NS_WARNING_ASSERTION(frame, "No frame for focused content?");
|
|
}
|
|
|
|
// Actually scroll the selection (ie caret) into view. Note that this must
|
|
// be synchronous since we will be checking the caret position on the screen.
|
|
//
|
|
// Be easy about errors, and just don't scroll in those cases. Better to have
|
|
// the correct menu at a weird place than the wrong menu.
|
|
// After ScrollSelectionIntoView(), the pending notifications might be
|
|
// flushed and PresShell/PresContext/Frames may be dead. See bug 418470.
|
|
nsCOMPtr<nsISelectionController> selCon;
|
|
if (frame)
|
|
frame->GetSelectionController(GetPresContext(), getter_AddRefs(selCon));
|
|
else
|
|
selCon = static_cast<nsISelectionController*>(this);
|
|
if (selCon) {
|
|
rv = selCon->ScrollSelectionIntoView(
|
|
nsISelectionController::SELECTION_NORMAL,
|
|
nsISelectionController::SELECTION_FOCUS_REGION,
|
|
nsISelectionController::SCROLL_SYNCHRONOUS);
|
|
NS_ENSURE_SUCCESS(rv, false);
|
|
}
|
|
|
|
nsPresContext* presContext = GetPresContext();
|
|
|
|
// get caret position relative to the closest view
|
|
nsRect caretCoords;
|
|
nsIFrame* caretFrame = caret->GetGeometry(&caretCoords);
|
|
if (!caretFrame) return false;
|
|
nsPoint viewOffset;
|
|
nsView* view = caretFrame->GetClosestView(&viewOffset);
|
|
if (!view) return false;
|
|
// and then get the caret coords relative to the event widget
|
|
if (aEventWidget) {
|
|
viewOffset += view->GetOffsetToWidget(aEventWidget);
|
|
}
|
|
caretCoords.MoveBy(viewOffset);
|
|
|
|
// caret coordinates are in app units, convert to pixels
|
|
aTargetPt.x =
|
|
presContext->AppUnitsToDevPixels(caretCoords.x + caretCoords.width);
|
|
aTargetPt.y =
|
|
presContext->AppUnitsToDevPixels(caretCoords.y + caretCoords.height);
|
|
|
|
// make sure rounding doesn't return a pixel which is outside the caret
|
|
// (e.g. one line lower)
|
|
aTargetPt.y -= 1;
|
|
|
|
return true;
|
|
}
|
|
|
|
void PresShell::GetCurrentItemAndPositionForElement(
|
|
Element* aFocusedElement, nsIContent** aTargetToUse,
|
|
LayoutDeviceIntPoint& aTargetPt, nsIWidget* aRootWidget) {
|
|
nsCOMPtr<nsIContent> focusedContent = aFocusedElement;
|
|
ScrollContentIntoView(focusedContent, ScrollAxis(), ScrollAxis(),
|
|
nsIPresShell::SCROLL_OVERFLOW_HIDDEN);
|
|
|
|
nsPresContext* presContext = GetPresContext();
|
|
|
|
bool istree = false, checkLineHeight = true;
|
|
nscoord extraTreeY = 0;
|
|
|
|
#ifdef MOZ_XUL
|
|
// Set the position to just underneath the current item for multi-select
|
|
// lists or just underneath the selected item for single-select lists. If
|
|
// the element is not a list, or there is no selection, leave the position
|
|
// as is.
|
|
nsCOMPtr<Element> item;
|
|
nsCOMPtr<nsIDOMXULMultiSelectControlElement> multiSelect =
|
|
aFocusedElement->AsXULMultiSelectControl();
|
|
if (multiSelect) {
|
|
checkLineHeight = false;
|
|
|
|
int32_t currentIndex;
|
|
multiSelect->GetCurrentIndex(¤tIndex);
|
|
if (currentIndex >= 0) {
|
|
RefPtr<nsXULElement> xulElement = nsXULElement::FromNode(focusedContent);
|
|
if (xulElement) {
|
|
nsCOMPtr<nsIBoxObject> box = xulElement->GetBoxObject(IgnoreErrors());
|
|
nsCOMPtr<nsITreeBoxObject> treeBox(do_QueryInterface(box));
|
|
// Tree view special case (tree items have no frames)
|
|
// Get the focused row and add its coordinates, which are already in
|
|
// pixels
|
|
// XXX Boris, should we create a new interface so that this doesn't
|
|
// need to know about trees? Something like nsINodelessChildCreator
|
|
// which could provide the current focus coordinates?
|
|
if (treeBox) {
|
|
treeBox->EnsureRowIsVisible(currentIndex);
|
|
int32_t firstVisibleRow, rowHeight;
|
|
treeBox->GetFirstVisibleRow(&firstVisibleRow);
|
|
treeBox->GetRowHeight(&rowHeight);
|
|
|
|
extraTreeY += nsPresContext::CSSPixelsToAppUnits(
|
|
(currentIndex - firstVisibleRow + 1) * rowHeight);
|
|
istree = true;
|
|
|
|
RefPtr<nsTreeColumns> cols;
|
|
treeBox->GetColumns(getter_AddRefs(cols));
|
|
if (cols) {
|
|
nsTreeColumn* col = cols->GetFirstColumn();
|
|
if (col) {
|
|
RefPtr<Element> colElement = col->Element();
|
|
nsIFrame* frame = colElement->GetPrimaryFrame();
|
|
if (frame) {
|
|
extraTreeY += frame->GetSize().height;
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
multiSelect->GetCurrentItem(getter_AddRefs(item));
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
// don't check menulists as the selected item will be inside a popup.
|
|
nsCOMPtr<nsIDOMXULMenuListElement> menulist =
|
|
aFocusedElement->AsXULMenuList();
|
|
if (!menulist) {
|
|
nsCOMPtr<nsIDOMXULSelectControlElement> select =
|
|
aFocusedElement->AsXULSelectControl();
|
|
if (select) {
|
|
checkLineHeight = false;
|
|
select->GetSelectedItem(getter_AddRefs(item));
|
|
}
|
|
}
|
|
}
|
|
|
|
if (item) {
|
|
focusedContent = item;
|
|
}
|
|
#endif
|
|
|
|
nsIFrame* frame = focusedContent->GetPrimaryFrame();
|
|
if (frame) {
|
|
NS_ASSERTION(
|
|
frame->PresContext() == GetPresContext(),
|
|
"handling event for focused content that is not in our document?");
|
|
|
|
nsPoint frameOrigin(0, 0);
|
|
|
|
// Get the frame's origin within its view
|
|
nsView* view = frame->GetClosestView(&frameOrigin);
|
|
NS_ASSERTION(view, "No view for frame");
|
|
|
|
// View's origin relative the widget
|
|
if (aRootWidget) {
|
|
frameOrigin += view->GetOffsetToWidget(aRootWidget);
|
|
}
|
|
|
|
// Start context menu down and to the right from top left of frame
|
|
// use the lineheight. This is a good distance to move the context
|
|
// menu away from the top left corner of the frame. If we always
|
|
// used the frame height, the context menu could end up far away,
|
|
// for example when we're focused on linked images.
|
|
// On the other hand, we want to use the frame height if it's less
|
|
// than the current line height, so that the context menu appears
|
|
// associated with the correct frame.
|
|
nscoord extra = 0;
|
|
if (!istree) {
|
|
extra = frame->GetSize().height;
|
|
if (checkLineHeight) {
|
|
nsIScrollableFrame* scrollFrame =
|
|
nsLayoutUtils::GetNearestScrollableFrame(frame);
|
|
if (scrollFrame) {
|
|
nsSize scrollAmount = scrollFrame->GetLineScrollAmount();
|
|
nsIFrame* f = do_QueryFrame(scrollFrame);
|
|
int32_t APD = presContext->AppUnitsPerDevPixel();
|
|
int32_t scrollAPD = f->PresContext()->AppUnitsPerDevPixel();
|
|
scrollAmount = scrollAmount.ScaleToOtherAppUnits(scrollAPD, APD);
|
|
if (extra > scrollAmount.height) {
|
|
extra = scrollAmount.height;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
aTargetPt.x = presContext->AppUnitsToDevPixels(frameOrigin.x);
|
|
aTargetPt.y =
|
|
presContext->AppUnitsToDevPixels(frameOrigin.y + extra + extraTreeY);
|
|
}
|
|
|
|
NS_IF_ADDREF(*aTargetToUse = focusedContent);
|
|
}
|
|
|
|
bool PresShell::ShouldIgnoreInvalidation() {
|
|
return mPaintingSuppressed || !mIsActive || mIsNeverPainting;
|
|
}
|
|
|
|
void PresShell::WillPaint() {
|
|
// Check the simplest things first. In particular, it's important to
|
|
// check mIsActive before making any of the more expensive calls such
|
|
// as GetRootPresContext, for the case of a browser with a large
|
|
// number of tabs.
|
|
// Don't bother doing anything if some viewmanager in our tree is painting
|
|
// while we still have painting suppressed or we are not active.
|
|
if (!mIsActive || mPaintingSuppressed || !IsVisible()) {
|
|
return;
|
|
}
|
|
|
|
nsRootPresContext* rootPresContext = mPresContext->GetRootPresContext();
|
|
if (!rootPresContext) {
|
|
// In some edge cases, such as when we don't have a root frame yet,
|
|
// we can't find the root prescontext. There's nothing to do in that
|
|
// case.
|
|
return;
|
|
}
|
|
|
|
rootPresContext->FlushWillPaintObservers();
|
|
if (mIsDestroying) return;
|
|
|
|
// Process reflows, if we have them, to reduce flicker due to invalidates and
|
|
// reflow being interspersed. Note that we _do_ allow this to be
|
|
// interruptible; if we can't do all the reflows it's better to flicker a bit
|
|
// than to freeze up.
|
|
FlushPendingNotifications(
|
|
ChangesToFlush(FlushType::InterruptibleLayout, false));
|
|
}
|
|
|
|
void PresShell::WillPaintWindow() {
|
|
nsRootPresContext* rootPresContext = mPresContext->GetRootPresContext();
|
|
if (rootPresContext != mPresContext) {
|
|
// This could be a popup's presshell. We don't allow plugins in popups
|
|
// so there's nothing to do here.
|
|
return;
|
|
}
|
|
|
|
#ifndef XP_MACOSX
|
|
rootPresContext->ApplyPluginGeometryUpdates();
|
|
#endif
|
|
}
|
|
|
|
void PresShell::DidPaintWindow() {
|
|
nsRootPresContext* rootPresContext = mPresContext->GetRootPresContext();
|
|
if (rootPresContext != mPresContext) {
|
|
// This could be a popup's presshell. No point in notifying XPConnect
|
|
// about compositing of popups.
|
|
return;
|
|
}
|
|
|
|
if (!mHasReceivedPaintMessage) {
|
|
mHasReceivedPaintMessage = true;
|
|
|
|
nsCOMPtr<nsIObserverService> obsvc = services::GetObserverService();
|
|
if (obsvc && mDocument) {
|
|
nsPIDOMWindowOuter* window = mDocument->GetWindow();
|
|
nsCOMPtr<nsIDOMChromeWindow> chromeWin(do_QueryInterface(window));
|
|
if (chromeWin) {
|
|
obsvc->NotifyObservers(chromeWin, "widget-first-paint", nullptr);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
bool PresShell::IsVisible() {
|
|
if (!mIsActive || !mViewManager) return false;
|
|
|
|
nsView* view = mViewManager->GetRootView();
|
|
if (!view) return true;
|
|
|
|
// inner view of subdoc frame
|
|
view = view->GetParent();
|
|
if (!view) return true;
|
|
|
|
// subdoc view
|
|
view = view->GetParent();
|
|
if (!view) return true;
|
|
|
|
nsIFrame* frame = view->GetFrame();
|
|
if (!frame) return true;
|
|
|
|
return frame->IsVisibleConsideringAncestors(
|
|
nsIFrame::VISIBILITY_CROSS_CHROME_CONTENT_BOUNDARY);
|
|
}
|
|
|
|
void PresShell::SuppressDisplayport(bool aEnabled) {
|
|
if (aEnabled) {
|
|
mActiveSuppressDisplayport++;
|
|
} else if (mActiveSuppressDisplayport > 0) {
|
|
bool isSuppressed = IsDisplayportSuppressed();
|
|
mActiveSuppressDisplayport--;
|
|
if (isSuppressed && !IsDisplayportSuppressed()) {
|
|
// We unsuppressed the displayport, trigger a paint
|
|
if (nsIFrame* rootFrame = mFrameConstructor->GetRootFrame()) {
|
|
rootFrame->SchedulePaint();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static bool sDisplayPortSuppressionRespected = true;
|
|
|
|
void PresShell::RespectDisplayportSuppression(bool aEnabled) {
|
|
bool isSuppressed = IsDisplayportSuppressed();
|
|
sDisplayPortSuppressionRespected = aEnabled;
|
|
if (isSuppressed && !IsDisplayportSuppressed()) {
|
|
// We unsuppressed the displayport, trigger a paint
|
|
if (nsIFrame* rootFrame = mFrameConstructor->GetRootFrame()) {
|
|
rootFrame->SchedulePaint();
|
|
}
|
|
}
|
|
}
|
|
|
|
bool PresShell::IsDisplayportSuppressed() {
|
|
return sDisplayPortSuppressionRespected && mActiveSuppressDisplayport > 0;
|
|
}
|
|
|
|
nsresult PresShell::GetAgentStyleSheets(nsTArray<RefPtr<StyleSheet>>& aSheets) {
|
|
aSheets.Clear();
|
|
int32_t sheetCount = mStyleSet->SheetCount(SheetType::Agent);
|
|
|
|
if (!aSheets.SetCapacity(sheetCount, fallible)) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
|
|
for (int32_t i = 0; i < sheetCount; ++i) {
|
|
StyleSheet* sheet = mStyleSet->StyleSheetAt(SheetType::Agent, i);
|
|
aSheets.AppendElement(sheet);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult PresShell::SetAgentStyleSheets(
|
|
const nsTArray<RefPtr<StyleSheet>>& aSheets) {
|
|
return mStyleSet->ReplaceSheets(SheetType::Agent, aSheets);
|
|
}
|
|
|
|
nsresult PresShell::AddOverrideStyleSheet(StyleSheet* aSheet) {
|
|
return mStyleSet->PrependStyleSheet(SheetType::Override, aSheet);
|
|
}
|
|
|
|
nsresult PresShell::RemoveOverrideStyleSheet(StyleSheet* aSheet) {
|
|
return mStyleSet->RemoveStyleSheet(SheetType::Override, aSheet);
|
|
}
|
|
|
|
static void FreezeElement(nsISupports* aSupports, void* /* unused */) {
|
|
nsCOMPtr<nsIObjectLoadingContent> olc(do_QueryInterface(aSupports));
|
|
if (olc) {
|
|
olc->StopPluginInstance();
|
|
}
|
|
}
|
|
|
|
static bool FreezeSubDocument(nsIDocument* aDocument, void* aData) {
|
|
nsIPresShell* shell = aDocument->GetShell();
|
|
if (shell) shell->Freeze();
|
|
|
|
return true;
|
|
}
|
|
|
|
void PresShell::Freeze() {
|
|
mUpdateApproximateFrameVisibilityEvent.Revoke();
|
|
|
|
MaybeReleaseCapturingContent();
|
|
|
|
mDocument->EnumerateActivityObservers(FreezeElement, nullptr);
|
|
|
|
if (mCaret) {
|
|
SetCaretEnabled(false);
|
|
}
|
|
|
|
mPaintingSuppressed = true;
|
|
|
|
if (mDocument) {
|
|
mDocument->EnumerateSubDocuments(FreezeSubDocument, nullptr);
|
|
}
|
|
|
|
nsPresContext* presContext = GetPresContext();
|
|
if (presContext) {
|
|
presContext->DisableInteractionTimeRecording();
|
|
if (presContext->RefreshDriver()->GetPresContext() == presContext) {
|
|
presContext->RefreshDriver()->Freeze();
|
|
}
|
|
}
|
|
|
|
mFrozen = true;
|
|
if (mDocument) {
|
|
UpdateImageLockingState();
|
|
}
|
|
}
|
|
|
|
void PresShell::FireOrClearDelayedEvents(bool aFireEvents) {
|
|
mNoDelayedMouseEvents = false;
|
|
mNoDelayedKeyEvents = false;
|
|
if (!aFireEvents) {
|
|
mDelayedEvents.Clear();
|
|
return;
|
|
}
|
|
|
|
if (mDocument) {
|
|
nsCOMPtr<nsIDocument> doc = mDocument;
|
|
while (!mIsDestroying && mDelayedEvents.Length() &&
|
|
!doc->EventHandlingSuppressed()) {
|
|
UniquePtr<DelayedEvent> ev = std::move(mDelayedEvents[0]);
|
|
mDelayedEvents.RemoveElementAt(0);
|
|
if (ev->IsKeyPressEvent() && mIsLastKeyDownCanceled) {
|
|
continue;
|
|
}
|
|
ev->Dispatch();
|
|
}
|
|
if (!doc->EventHandlingSuppressed()) {
|
|
mDelayedEvents.Clear();
|
|
}
|
|
}
|
|
}
|
|
|
|
static void ThawElement(nsISupports* aSupports, void* aShell) {
|
|
nsCOMPtr<nsIObjectLoadingContent> olc(do_QueryInterface(aSupports));
|
|
if (olc) {
|
|
olc->AsyncStartPluginInstance();
|
|
}
|
|
}
|
|
|
|
static bool ThawSubDocument(nsIDocument* aDocument, void* aData) {
|
|
nsIPresShell* shell = aDocument->GetShell();
|
|
if (shell) shell->Thaw();
|
|
|
|
return true;
|
|
}
|
|
|
|
void PresShell::Thaw() {
|
|
nsPresContext* presContext = GetPresContext();
|
|
if (presContext &&
|
|
presContext->RefreshDriver()->GetPresContext() == presContext) {
|
|
presContext->RefreshDriver()->Thaw();
|
|
}
|
|
|
|
mDocument->EnumerateActivityObservers(ThawElement, this);
|
|
|
|
if (mDocument) mDocument->EnumerateSubDocuments(ThawSubDocument, nullptr);
|
|
|
|
// Get the activeness of our presshell, as this might have changed
|
|
// while we were in the bfcache
|
|
QueryIsActive();
|
|
|
|
// We're now unfrozen
|
|
mFrozen = false;
|
|
UpdateImageLockingState();
|
|
|
|
UnsuppressPainting();
|
|
}
|
|
|
|
//--------------------------------------------------------
|
|
// Start of protected and private methods on the PresShell
|
|
//--------------------------------------------------------
|
|
|
|
void PresShell::MaybeScheduleReflow() {
|
|
ASSERT_REFLOW_SCHEDULED_STATE();
|
|
if (mObservingLayoutFlushes || mIsDestroying || mIsReflowing ||
|
|
mDirtyRoots.IsEmpty())
|
|
return;
|
|
|
|
if (!mPresContext->HasPendingInterrupt() || !ScheduleReflowOffTimer()) {
|
|
ScheduleReflow();
|
|
}
|
|
|
|
ASSERT_REFLOW_SCHEDULED_STATE();
|
|
}
|
|
|
|
void PresShell::ScheduleReflow() {
|
|
ASSERT_REFLOW_SCHEDULED_STATE();
|
|
DoObserveLayoutFlushes();
|
|
ASSERT_REFLOW_SCHEDULED_STATE();
|
|
}
|
|
|
|
nsresult PresShell::DidCauseReflow() {
|
|
NS_ASSERTION(mChangeNestCount != 0, "Unexpected call to DidCauseReflow()");
|
|
--mChangeNestCount;
|
|
nsContentUtils::RemoveScriptBlocker();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
void PresShell::WillDoReflow() {
|
|
mDocument->FlushUserFontSet();
|
|
|
|
mPresContext->FlushCounterStyles();
|
|
|
|
mPresContext->FlushFontFeatureValues();
|
|
|
|
mLastReflowStart = GetPerformanceNowUnclamped();
|
|
}
|
|
|
|
void PresShell::DidDoReflow(bool aInterruptible) {
|
|
HandlePostedReflowCallbacks(aInterruptible);
|
|
|
|
nsCOMPtr<nsIDocShell> docShell = mPresContext->GetDocShell();
|
|
if (docShell) {
|
|
DOMHighResTimeStamp now = GetPerformanceNowUnclamped();
|
|
docShell->NotifyReflowObservers(aInterruptible, mLastReflowStart, now);
|
|
}
|
|
|
|
if (sSynthMouseMove) {
|
|
SynthesizeMouseMove(false);
|
|
}
|
|
|
|
mPresContext->NotifyMissingFonts();
|
|
}
|
|
|
|
DOMHighResTimeStamp PresShell::GetPerformanceNowUnclamped() {
|
|
DOMHighResTimeStamp now = 0;
|
|
|
|
if (nsPIDOMWindowInner* window = mDocument->GetInnerWindow()) {
|
|
Performance* perf = window->GetPerformance();
|
|
|
|
if (perf) {
|
|
now = perf->NowUnclamped();
|
|
}
|
|
}
|
|
|
|
return now;
|
|
}
|
|
|
|
void PresShell::sReflowContinueCallback(nsITimer* aTimer, void* aPresShell) {
|
|
RefPtr<PresShell> self = static_cast<PresShell*>(aPresShell);
|
|
|
|
MOZ_ASSERT(aTimer == self->mReflowContinueTimer, "Unexpected timer");
|
|
self->mReflowContinueTimer = nullptr;
|
|
self->ScheduleReflow();
|
|
}
|
|
|
|
bool PresShell::ScheduleReflowOffTimer() {
|
|
MOZ_ASSERT(!mObservingLayoutFlushes, "Shouldn't get here");
|
|
ASSERT_REFLOW_SCHEDULED_STATE();
|
|
|
|
if (!mReflowContinueTimer) {
|
|
nsresult rv = NS_NewTimerWithFuncCallback(
|
|
getter_AddRefs(mReflowContinueTimer), sReflowContinueCallback, this, 30,
|
|
nsITimer::TYPE_ONE_SHOT, "sReflowContinueCallback",
|
|
mDocument->EventTargetFor(TaskCategory::Other));
|
|
return NS_SUCCEEDED(rv);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool PresShell::DoReflow(nsIFrame* target, bool aInterruptible,
|
|
OverflowChangedTracker* aOverflowTracker) {
|
|
#ifdef MOZ_GECKO_PROFILER
|
|
nsIURI* uri = mDocument->GetDocumentURI();
|
|
AUTO_PROFILER_LABEL_DYNAMIC_NSCSTRING(
|
|
"PresShell::DoReflow", LAYOUT,
|
|
uri ? uri->GetSpecOrDefault() : NS_LITERAL_CSTRING("N/A"));
|
|
#endif
|
|
|
|
gfxTextPerfMetrics* tp = mPresContext->GetTextPerfMetrics();
|
|
TimeStamp timeStart;
|
|
if (tp) {
|
|
tp->Accumulate();
|
|
tp->reflowCount++;
|
|
timeStart = TimeStamp::Now();
|
|
}
|
|
|
|
// Schedule a paint, but don't actually mark this frame as changed for
|
|
// retained DL building purposes. If any child frames get moved, then
|
|
// they will schedule paint again. We could probaby skip this, and just
|
|
// schedule a similar paint when a frame is deleted.
|
|
target->SchedulePaint(nsIFrame::PAINT_DEFAULT, false);
|
|
|
|
nsDocShell* docShell =
|
|
static_cast<nsDocShell*>(GetPresContext()->GetDocShell());
|
|
RefPtr<TimelineConsumers> timelines = TimelineConsumers::Get();
|
|
bool isTimelineRecording = timelines && timelines->HasConsumer(docShell);
|
|
|
|
if (isTimelineRecording) {
|
|
timelines->AddMarkerForDocShell(docShell, "Reflow",
|
|
MarkerTracingType::START);
|
|
}
|
|
|
|
#ifdef MOZ_GECKO_PROFILER
|
|
DECLARE_DOCSHELL_AND_HISTORY_ID(docShell);
|
|
AutoProfilerTracing tracingLayoutFlush("Paint", "Reflow",
|
|
std::move(mReflowCause), docShellId,
|
|
docShellHistoryId);
|
|
mReflowCause = nullptr;
|
|
#endif
|
|
|
|
if (mReflowContinueTimer) {
|
|
mReflowContinueTimer->Cancel();
|
|
mReflowContinueTimer = nullptr;
|
|
}
|
|
|
|
const bool isRoot = target == mFrameConstructor->GetRootFrame();
|
|
|
|
MOZ_ASSERT(isRoot || aOverflowTracker,
|
|
"caller must provide overflow tracker when reflowing "
|
|
"non-root frames");
|
|
|
|
// CreateReferenceRenderingContext can return nullptr
|
|
RefPtr<gfxContext> rcx(CreateReferenceRenderingContext());
|
|
|
|
#ifdef DEBUG
|
|
mCurrentReflowRoot = target;
|
|
#endif
|
|
|
|
// If the target frame is the root of the frame hierarchy, then
|
|
// use all the available space. If it's simply a `reflow root',
|
|
// then use the target frame's size as the available space.
|
|
WritingMode wm = target->GetWritingMode();
|
|
LogicalSize size(wm);
|
|
if (isRoot) {
|
|
size = LogicalSize(wm, mPresContext->GetVisibleArea().Size());
|
|
} else {
|
|
size = target->GetLogicalSize();
|
|
}
|
|
|
|
nsOverflowAreas oldOverflow; // initialized and used only when !isRoot
|
|
if (!isRoot) {
|
|
oldOverflow = target->GetOverflowAreas();
|
|
}
|
|
|
|
NS_ASSERTION(!target->GetNextInFlow() && !target->GetPrevInFlow(),
|
|
"reflow roots should never split");
|
|
|
|
// Don't pass size directly to the reflow state, since a
|
|
// constrained height implies page/column breaking.
|
|
LogicalSize reflowSize(wm, size.ISize(wm), NS_UNCONSTRAINEDSIZE);
|
|
ReflowInput reflowInput(mPresContext, target, rcx, reflowSize,
|
|
ReflowInput::CALLER_WILL_INIT);
|
|
reflowInput.mOrthogonalLimit = size.BSize(wm);
|
|
|
|
if (isRoot) {
|
|
reflowInput.Init(mPresContext);
|
|
|
|
// When the root frame is being reflowed with unconstrained block-size
|
|
// (which happens when we're called from
|
|
// nsDocumentViewer::SizeToContent), we're effectively doing a
|
|
// resize in the block direction, since it changes the meaning of
|
|
// percentage block-sizes even if no block-sizes actually changed.
|
|
// The same applies when we reflow again after that computation. This is
|
|
// an unusual case, and isn't caught by ReflowInput::InitResizeFlags.
|
|
bool hasUnconstrainedBSize = size.BSize(wm) == NS_UNCONSTRAINEDSIZE;
|
|
|
|
if (hasUnconstrainedBSize || mLastRootReflowHadUnconstrainedBSize) {
|
|
reflowInput.SetBResize(true);
|
|
}
|
|
|
|
mLastRootReflowHadUnconstrainedBSize = hasUnconstrainedBSize;
|
|
} else {
|
|
// Initialize reflow state with current used border and padding,
|
|
// in case this was set specially by the parent frame when the reflow root
|
|
// was reflowed by its parent.
|
|
nsMargin currentBorder = target->GetUsedBorder();
|
|
nsMargin currentPadding = target->GetUsedPadding();
|
|
reflowInput.Init(mPresContext, nullptr, ¤tBorder, ¤tPadding);
|
|
}
|
|
|
|
// fix the computed height
|
|
NS_ASSERTION(reflowInput.ComputedPhysicalMargin() == nsMargin(0, 0, 0, 0),
|
|
"reflow state should not set margin for reflow roots");
|
|
if (size.BSize(wm) != NS_UNCONSTRAINEDSIZE) {
|
|
nscoord computedBSize =
|
|
size.BSize(wm) -
|
|
reflowInput.ComputedLogicalBorderPadding().BStartEnd(wm);
|
|
computedBSize = std::max(computedBSize, 0);
|
|
reflowInput.SetComputedBSize(computedBSize);
|
|
}
|
|
NS_ASSERTION(reflowInput.ComputedISize() ==
|
|
size.ISize(wm) -
|
|
reflowInput.ComputedLogicalBorderPadding().IStartEnd(wm),
|
|
"reflow state computed incorrect inline size");
|
|
|
|
mPresContext->ReflowStarted(aInterruptible);
|
|
mIsReflowing = true;
|
|
|
|
nsReflowStatus status;
|
|
ReflowOutput desiredSize(reflowInput);
|
|
target->Reflow(mPresContext, desiredSize, reflowInput, status);
|
|
|
|
// If an incremental reflow is initiated at a frame other than the
|
|
// root frame, then its desired size had better not change! If it's
|
|
// initiated at the root, then the size better not change unless its
|
|
// height was unconstrained to start with.
|
|
nsRect boundsRelativeToTarget =
|
|
nsRect(0, 0, desiredSize.Width(), desiredSize.Height());
|
|
NS_ASSERTION((isRoot && size.BSize(wm) == NS_UNCONSTRAINEDSIZE) ||
|
|
(desiredSize.ISize(wm) == size.ISize(wm) &&
|
|
desiredSize.BSize(wm) == size.BSize(wm)),
|
|
"non-root frame's desired size changed during an "
|
|
"incremental reflow");
|
|
NS_ASSERTION(status.IsEmpty(), "reflow roots should never split");
|
|
|
|
target->SetSize(boundsRelativeToTarget.Size());
|
|
|
|
// Always use boundsRelativeToTarget here, not
|
|
// desiredSize.GetVisualOverflowArea(), because for root frames (where they
|
|
// could be different, since root frames are allowed to have overflow) the
|
|
// root view bounds need to match the viewport bounds; the view manager
|
|
// "window dimensions" code depends on it.
|
|
nsContainerFrame::SyncFrameViewAfterReflow(
|
|
mPresContext, target, target->GetView(), boundsRelativeToTarget);
|
|
nsContainerFrame::SyncWindowProperties(mPresContext, target,
|
|
target->GetView(), rcx,
|
|
nsContainerFrame::SET_ASYNC);
|
|
|
|
target->DidReflow(mPresContext, nullptr);
|
|
if (isRoot && size.BSize(wm) == NS_UNCONSTRAINEDSIZE) {
|
|
mPresContext->SetVisibleArea(boundsRelativeToTarget);
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
mCurrentReflowRoot = nullptr;
|
|
#endif
|
|
|
|
if (!isRoot && oldOverflow != target->GetOverflowAreas()) {
|
|
// The overflow area changed. Propagate this change to ancestors.
|
|
aOverflowTracker->AddFrame(target->GetParent(),
|
|
OverflowChangedTracker::CHILDREN_CHANGED);
|
|
}
|
|
|
|
NS_ASSERTION(
|
|
mPresContext->HasPendingInterrupt() || mFramesToDirty.Count() == 0,
|
|
"Why do we need to dirty anything if not interrupted?");
|
|
|
|
mIsReflowing = false;
|
|
bool interrupted = mPresContext->HasPendingInterrupt();
|
|
if (interrupted) {
|
|
// Make sure target gets reflowed again.
|
|
for (auto iter = mFramesToDirty.Iter(); !iter.Done(); iter.Next()) {
|
|
// Mark frames dirty until target frame.
|
|
nsPtrHashKey<nsIFrame>* p = iter.Get();
|
|
for (nsIFrame* f = p->GetKey(); f && !NS_SUBTREE_DIRTY(f);
|
|
f = f->GetParent()) {
|
|
f->AddStateBits(NS_FRAME_HAS_DIRTY_CHILDREN);
|
|
|
|
if (f == target) {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
NS_ASSERTION(NS_SUBTREE_DIRTY(target), "Why is the target not dirty?");
|
|
mDirtyRoots.Add(target);
|
|
SetNeedLayoutFlush();
|
|
|
|
// Clear mFramesToDirty after we've done the NS_SUBTREE_DIRTY(target)
|
|
// assertion so that if it fails it's easier to see what's going on.
|
|
#ifdef NOISY_INTERRUPTIBLE_REFLOW
|
|
printf("mFramesToDirty.Count() == %u\n", mFramesToDirty.Count());
|
|
#endif /* NOISY_INTERRUPTIBLE_REFLOW */
|
|
mFramesToDirty.Clear();
|
|
|
|
// Any FlushPendingNotifications with interruptible reflows
|
|
// should be suppressed now. We don't want to do extra reflow work
|
|
// before our reflow event happens.
|
|
mWasLastReflowInterrupted = true;
|
|
MaybeScheduleReflow();
|
|
}
|
|
|
|
// dump text perf metrics for reflows with significant text processing
|
|
if (tp) {
|
|
if (tp->current.numChars > 100) {
|
|
TimeDuration reflowTime = TimeStamp::Now() - timeStart;
|
|
LogTextPerfStats(tp, this, tp->current, reflowTime.ToMilliseconds(),
|
|
eLog_reflow, nullptr);
|
|
}
|
|
tp->Accumulate();
|
|
}
|
|
|
|
if (isTimelineRecording) {
|
|
timelines->AddMarkerForDocShell(docShell, "Reflow", MarkerTracingType::END);
|
|
}
|
|
|
|
return !interrupted;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
void PresShell::DoVerifyReflow() {
|
|
if (GetVerifyReflowEnable()) {
|
|
// First synchronously render what we have so far so that we can
|
|
// see it.
|
|
nsView* rootView = mViewManager->GetRootView();
|
|
mViewManager->InvalidateView(rootView);
|
|
|
|
FlushPendingNotifications(FlushType::Layout);
|
|
mInVerifyReflow = true;
|
|
bool ok = VerifyIncrementalReflow();
|
|
mInVerifyReflow = false;
|
|
if (VERIFY_REFLOW_ALL & gVerifyReflowFlags) {
|
|
printf("ProcessReflowCommands: finished (%s)\n", ok ? "ok" : "failed");
|
|
}
|
|
|
|
if (!mDirtyRoots.IsEmpty()) {
|
|
printf("XXX yikes! reflow commands queued during verify-reflow\n");
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
// used with Telemetry metrics
|
|
#define NS_LONG_REFLOW_TIME_MS 5000
|
|
|
|
bool PresShell::ProcessReflowCommands(bool aInterruptible) {
|
|
if (mDirtyRoots.IsEmpty() && !mShouldUnsuppressPainting) {
|
|
// Nothing to do; bail out
|
|
return true;
|
|
}
|
|
|
|
mozilla::TimeStamp timerStart = mozilla::TimeStamp::Now();
|
|
bool interrupted = false;
|
|
if (!mDirtyRoots.IsEmpty()) {
|
|
#ifdef DEBUG
|
|
if (VERIFY_REFLOW_DUMP_COMMANDS & gVerifyReflowFlags) {
|
|
printf("ProcessReflowCommands: begin incremental reflow\n");
|
|
}
|
|
#endif
|
|
|
|
// If reflow is interruptible, then make a note of our deadline.
|
|
const PRIntervalTime deadline =
|
|
aInterruptible
|
|
? PR_IntervalNow() + PR_MicrosecondsToInterval(gMaxRCProcessingTime)
|
|
: (PRIntervalTime)0;
|
|
|
|
// Scope for the reflow entry point
|
|
{
|
|
nsAutoScriptBlocker scriptBlocker;
|
|
WillDoReflow();
|
|
AUTO_LAYOUT_PHASE_ENTRY_POINT(GetPresContext(), Reflow);
|
|
nsViewManager::AutoDisableRefresh refreshBlocker(mViewManager);
|
|
|
|
OverflowChangedTracker overflowTracker;
|
|
|
|
do {
|
|
// Send an incremental reflow notification to the target frame.
|
|
nsIFrame* target = mDirtyRoots.PopShallowestRoot();
|
|
|
|
if (!NS_SUBTREE_DIRTY(target)) {
|
|
// It's not dirty anymore, which probably means the notification
|
|
// was posted in the middle of a reflow (perhaps with a reflow
|
|
// root in the middle). Don't do anything.
|
|
continue;
|
|
}
|
|
|
|
interrupted = !DoReflow(target, aInterruptible, &overflowTracker);
|
|
|
|
// Keep going until we're out of reflow commands, or we've run
|
|
// past our deadline, or we're interrupted.
|
|
} while (!interrupted && !mDirtyRoots.IsEmpty() &&
|
|
(!aInterruptible || PR_IntervalNow() < deadline));
|
|
|
|
interrupted = !mDirtyRoots.IsEmpty();
|
|
|
|
overflowTracker.Flush();
|
|
}
|
|
|
|
// Exiting the scriptblocker might have killed us
|
|
if (!mIsDestroying) {
|
|
DidDoReflow(aInterruptible);
|
|
}
|
|
|
|
// DidDoReflow might have killed us
|
|
if (!mIsDestroying) {
|
|
#ifdef DEBUG
|
|
if (VERIFY_REFLOW_DUMP_COMMANDS & gVerifyReflowFlags) {
|
|
printf("\nPresShell::ProcessReflowCommands() finished: this=%p\n",
|
|
(void*)this);
|
|
}
|
|
DoVerifyReflow();
|
|
#endif
|
|
|
|
// If any new reflow commands were enqueued during the reflow, schedule
|
|
// another reflow event to process them. Note that we want to do this
|
|
// after DidDoReflow(), since that method can change whether there are
|
|
// dirty roots around by flushing, and there's no point in posting a
|
|
// reflow event just to have the flush revoke it.
|
|
if (!mDirtyRoots.IsEmpty()) {
|
|
MaybeScheduleReflow();
|
|
// And record that we might need flushing
|
|
SetNeedLayoutFlush();
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!mIsDestroying && mShouldUnsuppressPainting && mDirtyRoots.IsEmpty()) {
|
|
// We only unlock if we're out of reflows. It's pointless
|
|
// to unlock if reflows are still pending, since reflows
|
|
// are just going to thrash the frames around some more. By
|
|
// waiting we avoid an overeager "jitter" effect.
|
|
mShouldUnsuppressPainting = false;
|
|
UnsuppressAndInvalidate();
|
|
}
|
|
|
|
if (mDocument->GetRootElement()) {
|
|
TimeDuration elapsed = TimeStamp::Now() - timerStart;
|
|
int32_t intElapsed = int32_t(elapsed.ToMilliseconds());
|
|
|
|
if (intElapsed > NS_LONG_REFLOW_TIME_MS) {
|
|
Telemetry::Accumulate(Telemetry::LONG_REFLOW_INTERRUPTIBLE,
|
|
aInterruptible ? 1 : 0);
|
|
}
|
|
}
|
|
|
|
return !interrupted;
|
|
}
|
|
|
|
void PresShell::WindowSizeMoveDone() {
|
|
if (mPresContext) {
|
|
EventStateManager::ClearGlobalActiveContent(nullptr);
|
|
ClearMouseCapture(nullptr);
|
|
}
|
|
}
|
|
|
|
#ifdef MOZ_XUL
|
|
/*
|
|
* It's better to add stuff to the |DidSetComputedStyle| method of the
|
|
* relevant frames than adding it here. These methods should (ideally,
|
|
* anyway) go away.
|
|
*/
|
|
|
|
// Return value says whether to walk children.
|
|
typedef bool (*frameWalkerFn)(nsIFrame* aFrame);
|
|
|
|
static bool ReResolveMenusAndTrees(nsIFrame* aFrame) {
|
|
// Trees have a special style cache that needs to be flushed when
|
|
// the theme changes.
|
|
nsTreeBodyFrame* treeBody = do_QueryFrame(aFrame);
|
|
if (treeBody) treeBody->ClearStyleAndImageCaches();
|
|
|
|
// We deliberately don't re-resolve style on a menu's popup
|
|
// sub-content, since doing so slows menus to a crawl. That means we
|
|
// have to special-case them on a skin switch, and ensure that the
|
|
// popup frames just get destroyed completely.
|
|
nsMenuFrame* menu = do_QueryFrame(aFrame);
|
|
if (menu) menu->CloseMenu(true);
|
|
return true;
|
|
}
|
|
|
|
static bool ReframeImageBoxes(nsIFrame* aFrame) {
|
|
if (aFrame->IsImageBoxFrame()) {
|
|
aFrame->PresContext()->RestyleManager()->PostRestyleEvent(
|
|
aFrame->GetContent()->AsElement(), nsRestyleHint(0),
|
|
nsChangeHint_ReconstructFrame);
|
|
return false; // don't walk descendants
|
|
}
|
|
return true; // walk descendants
|
|
}
|
|
|
|
static void WalkFramesThroughPlaceholders(nsPresContext* aPresContext,
|
|
nsIFrame* aFrame,
|
|
frameWalkerFn aFunc) {
|
|
bool walkChildren = (*aFunc)(aFrame);
|
|
if (!walkChildren) return;
|
|
|
|
nsIFrame::ChildListIterator lists(aFrame);
|
|
for (; !lists.IsDone(); lists.Next()) {
|
|
nsFrameList::Enumerator childFrames(lists.CurrentList());
|
|
for (; !childFrames.AtEnd(); childFrames.Next()) {
|
|
nsIFrame* child = childFrames.get();
|
|
if (!(child->GetStateBits() & NS_FRAME_OUT_OF_FLOW)) {
|
|
// only do frames that are in flow, and recur through the
|
|
// out-of-flows of placeholders.
|
|
WalkFramesThroughPlaceholders(
|
|
aPresContext, nsPlaceholderFrame::GetRealFrameFor(child), aFunc);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
NS_IMETHODIMP
|
|
PresShell::Observe(nsISupports* aSubject, const char* aTopic,
|
|
const char16_t* aData) {
|
|
if (mIsDestroying) {
|
|
NS_WARNING("our observers should have been unregistered by now");
|
|
return NS_OK;
|
|
}
|
|
|
|
#ifdef MOZ_XUL
|
|
if (!nsCRT::strcmp(aTopic, "chrome-flush-skin-caches")) {
|
|
// Need to null-check because "chrome-flush-skin-caches" can happen
|
|
// at interesting times during startup.
|
|
if (nsIFrame* rootFrame = mFrameConstructor->GetRootFrame()) {
|
|
NS_ASSERTION(mViewManager, "View manager must exist");
|
|
|
|
WalkFramesThroughPlaceholders(mPresContext, rootFrame,
|
|
ReResolveMenusAndTrees);
|
|
|
|
// Because "chrome:" URL equality is messy, reframe image box
|
|
// frames (hack!).
|
|
WalkFramesThroughPlaceholders(mPresContext, rootFrame, ReframeImageBoxes);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
#endif
|
|
|
|
if (!nsCRT::strcmp(aTopic, "memory-pressure")) {
|
|
if (!AssumeAllFramesVisible() && mPresContext->IsRootContentDocument()) {
|
|
DoUpdateApproximateFrameVisibility(/* aRemoveOnly = */ true);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
if (!nsCRT::strcmp(aTopic, NS_WIDGET_WAKE_OBSERVER_TOPIC)) {
|
|
mLastOSWake = TimeStamp::Now();
|
|
return NS_OK;
|
|
}
|
|
|
|
// For parent process, user may expect the UI is interactable after a
|
|
// tab (previously opened page or home page) has restored.
|
|
if (!nsCRT::strcmp(aTopic, "sessionstore-one-or-no-tab-restored")) {
|
|
MOZ_ASSERT(XRE_IsParentProcess());
|
|
sProcessInteractable = true;
|
|
|
|
nsCOMPtr<nsIObserverService> os = mozilla::services::GetObserverService();
|
|
if (os) {
|
|
os->RemoveObserver(this, "sessionstore-one-or-no-tab-restored");
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
if (!nsCRT::strcmp(aTopic, "font-info-updated")) {
|
|
mPresContext->ForceReflowForFontInfoUpdate();
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_WARNING("unrecognized topic in PresShell::Observe");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
bool nsIPresShell::AddRefreshObserver(nsARefreshObserver* aObserver,
|
|
FlushType aFlushType) {
|
|
nsPresContext* presContext = GetPresContext();
|
|
if (MOZ_UNLIKELY(!presContext)) {
|
|
return false;
|
|
}
|
|
presContext->RefreshDriver()->AddRefreshObserver(aObserver, aFlushType);
|
|
return true;
|
|
}
|
|
|
|
bool nsIPresShell::RemoveRefreshObserver(nsARefreshObserver* aObserver,
|
|
FlushType aFlushType) {
|
|
nsPresContext* presContext = GetPresContext();
|
|
return presContext && presContext->RefreshDriver()->RemoveRefreshObserver(
|
|
aObserver, aFlushType);
|
|
}
|
|
|
|
/* virtual */ bool nsIPresShell::AddPostRefreshObserver(
|
|
nsAPostRefreshObserver* aObserver) {
|
|
nsPresContext* presContext = GetPresContext();
|
|
if (!presContext) {
|
|
return false;
|
|
}
|
|
presContext->RefreshDriver()->AddPostRefreshObserver(aObserver);
|
|
return true;
|
|
}
|
|
|
|
/* virtual */ bool nsIPresShell::RemovePostRefreshObserver(
|
|
nsAPostRefreshObserver* aObserver) {
|
|
nsPresContext* presContext = GetPresContext();
|
|
if (!presContext) {
|
|
return false;
|
|
}
|
|
presContext->RefreshDriver()->RemovePostRefreshObserver(aObserver);
|
|
return true;
|
|
}
|
|
|
|
void nsIPresShell::DoObserveStyleFlushes() {
|
|
MOZ_ASSERT(!ObservingStyleFlushes());
|
|
mObservingStyleFlushes = true;
|
|
|
|
if (MOZ_LIKELY(!mDocument->GetBFCacheEntry())) {
|
|
mPresContext->RefreshDriver()->AddStyleFlushObserver(this);
|
|
}
|
|
}
|
|
|
|
void nsIPresShell::DoObserveLayoutFlushes() {
|
|
MOZ_ASSERT(!ObservingLayoutFlushes());
|
|
mObservingLayoutFlushes = true;
|
|
|
|
if (MOZ_LIKELY(!mDocument->GetBFCacheEntry())) {
|
|
mPresContext->RefreshDriver()->AddLayoutFlushObserver(this);
|
|
}
|
|
}
|
|
|
|
//------------------------------------------------------
|
|
// End of protected and private methods on the PresShell
|
|
//------------------------------------------------------
|
|
|
|
//------------------------------------------------------------------
|
|
//-- Delayed event Classes Impls
|
|
//------------------------------------------------------------------
|
|
|
|
PresShell::DelayedInputEvent::DelayedInputEvent()
|
|
: DelayedEvent(), mEvent(nullptr) {}
|
|
|
|
PresShell::DelayedInputEvent::~DelayedInputEvent() { delete mEvent; }
|
|
|
|
void PresShell::DelayedInputEvent::Dispatch() {
|
|
if (!mEvent || !mEvent->mWidget) {
|
|
return;
|
|
}
|
|
nsCOMPtr<nsIWidget> widget = mEvent->mWidget;
|
|
nsEventStatus status;
|
|
widget->DispatchEvent(mEvent, status);
|
|
}
|
|
|
|
PresShell::DelayedMouseEvent::DelayedMouseEvent(WidgetMouseEvent* aEvent)
|
|
: DelayedInputEvent() {
|
|
WidgetMouseEvent* mouseEvent = new WidgetMouseEvent(
|
|
aEvent->IsTrusted(), aEvent->mMessage, aEvent->mWidget, aEvent->mReason,
|
|
aEvent->mContextMenuTrigger);
|
|
mouseEvent->AssignMouseEventData(*aEvent, false);
|
|
mEvent = mouseEvent;
|
|
}
|
|
|
|
PresShell::DelayedKeyEvent::DelayedKeyEvent(WidgetKeyboardEvent* aEvent)
|
|
: DelayedInputEvent() {
|
|
WidgetKeyboardEvent* keyEvent = new WidgetKeyboardEvent(
|
|
aEvent->IsTrusted(), aEvent->mMessage, aEvent->mWidget);
|
|
keyEvent->AssignKeyEventData(*aEvent, false);
|
|
keyEvent->mFlags.mIsSynthesizedForTests =
|
|
aEvent->mFlags.mIsSynthesizedForTests;
|
|
keyEvent->mFlags.mIsSuppressedOrDelayed = true;
|
|
mEvent = keyEvent;
|
|
}
|
|
|
|
bool PresShell::DelayedKeyEvent::IsKeyPressEvent() {
|
|
return mEvent->mMessage == eKeyPress;
|
|
}
|
|
|
|
// Start of DEBUG only code
|
|
|
|
#ifdef DEBUG
|
|
|
|
static void LogVerifyMessage(nsIFrame* k1, nsIFrame* k2, const char* aMsg) {
|
|
nsAutoString n1, n2;
|
|
if (k1) {
|
|
k1->GetFrameName(n1);
|
|
} else {
|
|
n1.AssignLiteral(u"(null)");
|
|
}
|
|
|
|
if (k2) {
|
|
k2->GetFrameName(n2);
|
|
} else {
|
|
n2.AssignLiteral(u"(null)");
|
|
}
|
|
|
|
printf("verifyreflow: %s %p != %s %p %s\n",
|
|
NS_LossyConvertUTF16toASCII(n1).get(), (void*)k1,
|
|
NS_LossyConvertUTF16toASCII(n2).get(), (void*)k2, aMsg);
|
|
}
|
|
|
|
static void LogVerifyMessage(nsIFrame* k1, nsIFrame* k2, const char* aMsg,
|
|
const nsRect& r1, const nsRect& r2) {
|
|
printf("VerifyReflow Error:\n");
|
|
nsAutoString name;
|
|
|
|
if (k1) {
|
|
k1->GetFrameName(name);
|
|
printf(" %s %p ", NS_LossyConvertUTF16toASCII(name).get(), (void*)k1);
|
|
}
|
|
printf("{%d, %d, %d, %d} != \n", r1.x, r1.y, r1.width, r1.height);
|
|
|
|
if (k2) {
|
|
k2->GetFrameName(name);
|
|
printf(" %s %p ", NS_LossyConvertUTF16toASCII(name).get(), (void*)k2);
|
|
}
|
|
printf("{%d, %d, %d, %d}\n %s\n", r2.x, r2.y, r2.width, r2.height, aMsg);
|
|
}
|
|
|
|
static void LogVerifyMessage(nsIFrame* k1, nsIFrame* k2, const char* aMsg,
|
|
const nsIntRect& r1, const nsIntRect& r2) {
|
|
printf("VerifyReflow Error:\n");
|
|
nsAutoString name;
|
|
|
|
if (k1) {
|
|
k1->GetFrameName(name);
|
|
printf(" %s %p ", NS_LossyConvertUTF16toASCII(name).get(), (void*)k1);
|
|
}
|
|
printf("{%d, %d, %d, %d} != \n", r1.x, r1.y, r1.width, r1.height);
|
|
|
|
if (k2) {
|
|
k2->GetFrameName(name);
|
|
printf(" %s %p ", NS_LossyConvertUTF16toASCII(name).get(), (void*)k2);
|
|
}
|
|
printf("{%d, %d, %d, %d}\n %s\n", r2.x, r2.y, r2.width, r2.height, aMsg);
|
|
}
|
|
|
|
static bool CompareTrees(nsPresContext* aFirstPresContext,
|
|
nsIFrame* aFirstFrame,
|
|
nsPresContext* aSecondPresContext,
|
|
nsIFrame* aSecondFrame) {
|
|
if (!aFirstPresContext || !aFirstFrame || !aSecondPresContext ||
|
|
!aSecondFrame)
|
|
return true;
|
|
// XXX Evil hack to reduce false positives; I can't seem to figure
|
|
// out how to flush scrollbar changes correctly
|
|
// if (aFirstFrame->IsScrollbarFrame())
|
|
// return true;
|
|
bool ok = true;
|
|
nsIFrame::ChildListIterator lists1(aFirstFrame);
|
|
nsIFrame::ChildListIterator lists2(aSecondFrame);
|
|
do {
|
|
const nsFrameList& kids1 =
|
|
!lists1.IsDone() ? lists1.CurrentList() : nsFrameList();
|
|
const nsFrameList& kids2 =
|
|
!lists2.IsDone() ? lists2.CurrentList() : nsFrameList();
|
|
int32_t l1 = kids1.GetLength();
|
|
int32_t l2 = kids2.GetLength();
|
|
if (l1 != l2) {
|
|
ok = false;
|
|
LogVerifyMessage(kids1.FirstChild(), kids2.FirstChild(),
|
|
"child counts don't match: ");
|
|
printf("%d != %d\n", l1, l2);
|
|
if (0 == (VERIFY_REFLOW_ALL & gVerifyReflowFlags)) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
LayoutDeviceIntRect r1, r2;
|
|
nsView* v1;
|
|
nsView* v2;
|
|
for (nsFrameList::Enumerator e1(kids1), e2(kids2);; e1.Next(), e2.Next()) {
|
|
nsIFrame* k1 = e1.get();
|
|
nsIFrame* k2 = e2.get();
|
|
if (((nullptr == k1) && (nullptr != k2)) ||
|
|
((nullptr != k1) && (nullptr == k2))) {
|
|
ok = false;
|
|
LogVerifyMessage(k1, k2, "child lists are different\n");
|
|
break;
|
|
} else if (nullptr != k1) {
|
|
// Verify that the frames are the same size
|
|
if (!k1->GetRect().IsEqualInterior(k2->GetRect())) {
|
|
ok = false;
|
|
LogVerifyMessage(k1, k2, "(frame rects)", k1->GetRect(),
|
|
k2->GetRect());
|
|
}
|
|
|
|
// Make sure either both have views or neither have views; if they
|
|
// do have views, make sure the views are the same size. If the
|
|
// views have widgets, make sure they both do or neither does. If
|
|
// they do, make sure the widgets are the same size.
|
|
v1 = k1->GetView();
|
|
v2 = k2->GetView();
|
|
if (((nullptr == v1) && (nullptr != v2)) ||
|
|
((nullptr != v1) && (nullptr == v2))) {
|
|
ok = false;
|
|
LogVerifyMessage(k1, k2, "child views are not matched\n");
|
|
} else if (nullptr != v1) {
|
|
if (!v1->GetBounds().IsEqualInterior(v2->GetBounds())) {
|
|
LogVerifyMessage(k1, k2, "(view rects)", v1->GetBounds(),
|
|
v2->GetBounds());
|
|
}
|
|
|
|
nsIWidget* w1 = v1->GetWidget();
|
|
nsIWidget* w2 = v2->GetWidget();
|
|
if (((nullptr == w1) && (nullptr != w2)) ||
|
|
((nullptr != w1) && (nullptr == w2))) {
|
|
ok = false;
|
|
LogVerifyMessage(k1, k2, "child widgets are not matched\n");
|
|
} else if (nullptr != w1) {
|
|
r1 = w1->GetBounds();
|
|
r2 = w2->GetBounds();
|
|
if (!r1.IsEqualEdges(r2)) {
|
|
LogVerifyMessage(k1, k2, "(widget rects)", r1.ToUnknownRect(),
|
|
r2.ToUnknownRect());
|
|
}
|
|
}
|
|
}
|
|
if (!ok && (0 == (VERIFY_REFLOW_ALL & gVerifyReflowFlags))) {
|
|
break;
|
|
}
|
|
|
|
// XXX Should perhaps compare their float managers.
|
|
|
|
// Compare the sub-trees too
|
|
if (!CompareTrees(aFirstPresContext, k1, aSecondPresContext, k2)) {
|
|
ok = false;
|
|
if (0 == (VERIFY_REFLOW_ALL & gVerifyReflowFlags)) {
|
|
break;
|
|
}
|
|
}
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
if (!ok && (0 == (VERIFY_REFLOW_ALL & gVerifyReflowFlags))) {
|
|
break;
|
|
}
|
|
|
|
lists1.Next();
|
|
lists2.Next();
|
|
if (lists1.IsDone() != lists2.IsDone() ||
|
|
(!lists1.IsDone() && lists1.CurrentID() != lists2.CurrentID())) {
|
|
if (0 == (VERIFY_REFLOW_ALL & gVerifyReflowFlags)) {
|
|
ok = false;
|
|
}
|
|
LogVerifyMessage(kids1.FirstChild(), kids2.FirstChild(),
|
|
"child list names are not matched: ");
|
|
fprintf(
|
|
stdout, "%s != %s\n",
|
|
!lists1.IsDone() ? mozilla::layout::ChildListName(lists1.CurrentID())
|
|
: "(null)",
|
|
!lists2.IsDone() ? mozilla::layout::ChildListName(lists2.CurrentID())
|
|
: "(null)");
|
|
break;
|
|
}
|
|
} while (ok && !lists1.IsDone());
|
|
|
|
return ok;
|
|
}
|
|
#endif
|
|
|
|
#if 0
|
|
static nsIFrame*
|
|
FindTopFrame(nsIFrame* aRoot)
|
|
{
|
|
if (aRoot) {
|
|
nsIContent* content = aRoot->GetContent();
|
|
if (content) {
|
|
nsAtom* tag;
|
|
content->GetTag(tag);
|
|
if (nullptr != tag) {
|
|
NS_RELEASE(tag);
|
|
return aRoot;
|
|
}
|
|
}
|
|
|
|
// Try one of the children
|
|
for (nsIFrame* kid : aRoot->PrincipalChildList()) {
|
|
nsIFrame* result = FindTopFrame(kid);
|
|
if (nullptr != result) {
|
|
return result;
|
|
}
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
#endif
|
|
|
|
#ifdef DEBUG
|
|
|
|
static void CopySheetsIntoClone(ServoStyleSet* aSet, ServoStyleSet* aClone) {
|
|
int32_t i, n = aSet->SheetCount(SheetType::Override);
|
|
for (i = 0; i < n; i++) {
|
|
StyleSheet* ss = aSet->StyleSheetAt(SheetType::Override, i);
|
|
if (ss) aClone->AppendStyleSheet(SheetType::Override, ss);
|
|
}
|
|
|
|
// The document expects to insert document stylesheets itself
|
|
#if 0
|
|
n = aSet->SheetCount(SheetType::Doc);
|
|
for (i = 0; i < n; i++) {
|
|
StyleSheet* ss = aSet->StyleSheetAt(SheetType::Doc, i);
|
|
if (ss)
|
|
aClone->AddDocStyleSheet(ss, mDocument);
|
|
}
|
|
#endif
|
|
|
|
n = aSet->SheetCount(SheetType::User);
|
|
for (i = 0; i < n; i++) {
|
|
StyleSheet* ss = aSet->StyleSheetAt(SheetType::User, i);
|
|
if (ss) aClone->AppendStyleSheet(SheetType::User, ss);
|
|
}
|
|
|
|
n = aSet->SheetCount(SheetType::Agent);
|
|
for (i = 0; i < n; i++) {
|
|
StyleSheet* ss = aSet->StyleSheetAt(SheetType::Agent, i);
|
|
if (ss) aClone->AppendStyleSheet(SheetType::Agent, ss);
|
|
}
|
|
}
|
|
|
|
UniquePtr<ServoStyleSet> PresShell::CloneStyleSet(ServoStyleSet* aSet) {
|
|
auto clone = MakeUnique<ServoStyleSet>();
|
|
CopySheetsIntoClone(aSet, clone.get());
|
|
return clone;
|
|
}
|
|
|
|
// After an incremental reflow, we verify the correctness by doing a
|
|
// full reflow into a fresh frame tree.
|
|
bool PresShell::VerifyIncrementalReflow() {
|
|
if (VERIFY_REFLOW_NOISY & gVerifyReflowFlags) {
|
|
printf("Building Verification Tree...\n");
|
|
}
|
|
|
|
// Create a presentation context to view the new frame tree
|
|
RefPtr<nsPresContext> cx = new nsRootPresContext(
|
|
mDocument, mPresContext->IsPaginated()
|
|
? nsPresContext::eContext_PrintPreview
|
|
: nsPresContext::eContext_Galley);
|
|
NS_ENSURE_TRUE(cx, false);
|
|
|
|
nsDeviceContext* dc = mPresContext->DeviceContext();
|
|
nsresult rv = cx->Init(dc);
|
|
NS_ENSURE_SUCCESS(rv, false);
|
|
|
|
// Get our scrolling preference
|
|
nsView* rootView = mViewManager->GetRootView();
|
|
NS_ENSURE_TRUE(rootView->HasWidget(), false);
|
|
nsIWidget* parentWidget = rootView->GetWidget();
|
|
|
|
// Create a new view manager.
|
|
RefPtr<nsViewManager> vm = new nsViewManager();
|
|
NS_ENSURE_TRUE(vm, false);
|
|
rv = vm->Init(dc);
|
|
NS_ENSURE_SUCCESS(rv, false);
|
|
|
|
// Create a child window of the parent that is our "root view/window"
|
|
// Create a view
|
|
nsRect tbounds = mPresContext->GetVisibleArea();
|
|
nsView* view = vm->CreateView(tbounds, nullptr);
|
|
NS_ENSURE_TRUE(view, false);
|
|
|
|
// now create the widget for the view
|
|
rv = view->CreateWidgetForParent(parentWidget, nullptr, true);
|
|
NS_ENSURE_SUCCESS(rv, false);
|
|
|
|
// Setup hierarchical relationship in view manager
|
|
vm->SetRootView(view);
|
|
|
|
// Make the new presentation context the same size as our
|
|
// presentation context.
|
|
cx->SetVisibleArea(mPresContext->GetVisibleArea());
|
|
|
|
// Create a new presentation shell to view the document. Use the
|
|
// exact same style information that this document has.
|
|
UniquePtr<ServoStyleSet> newSet = CloneStyleSet(StyleSet());
|
|
|
|
nsCOMPtr<nsIPresShell> sh = mDocument->CreateShell(cx, vm, std::move(newSet));
|
|
NS_ENSURE_TRUE(sh, false);
|
|
// Note that after we create the shell, we must make sure to destroy it
|
|
sh->SetVerifyReflowEnable(false); // turn off verify reflow while we're
|
|
// reflowing the test frame tree
|
|
vm->SetPresShell(sh);
|
|
{
|
|
nsAutoCauseReflowNotifier crNotifier(this);
|
|
sh->Initialize();
|
|
}
|
|
mDocument->BindingManager()->ProcessAttachedQueue();
|
|
sh->FlushPendingNotifications(FlushType::Layout);
|
|
sh->SetVerifyReflowEnable(true); // turn on verify reflow again now that
|
|
// we're done reflowing the test frame tree
|
|
// Force the non-primary presshell to unsuppress; it doesn't want to normally
|
|
// because it thinks it's hidden
|
|
((PresShell*)sh.get())->mPaintingSuppressed = false;
|
|
if (VERIFY_REFLOW_NOISY & gVerifyReflowFlags) {
|
|
printf("Verification Tree built, comparing...\n");
|
|
}
|
|
|
|
// Now that the document has been reflowed, use its frame tree to
|
|
// compare against our frame tree.
|
|
nsIFrame* root1 = mFrameConstructor->GetRootFrame();
|
|
nsIFrame* root2 = sh->GetRootFrame();
|
|
bool ok = CompareTrees(mPresContext, root1, cx, root2);
|
|
if (!ok && (VERIFY_REFLOW_NOISY & gVerifyReflowFlags)) {
|
|
printf("Verify reflow failed, primary tree:\n");
|
|
root1->List(stdout, 0);
|
|
printf("Verification tree:\n");
|
|
root2->List(stdout, 0);
|
|
}
|
|
|
|
#if 0
|
|
// Sample code for dumping page to png
|
|
// XXX Needs to be made more flexible
|
|
if (!ok) {
|
|
nsString stra;
|
|
static int num = 0;
|
|
stra.AppendLiteral("C:\\mozilla\\mozilla\\debug\\filea");
|
|
stra.AppendInt(num);
|
|
stra.AppendLiteral(".png");
|
|
gfxUtils::WriteAsPNG(sh, stra);
|
|
nsString strb;
|
|
strb.AppendLiteral("C:\\mozilla\\mozilla\\debug\\fileb");
|
|
strb.AppendInt(num);
|
|
strb.AppendLiteral(".png");
|
|
gfxUtils::WriteAsPNG(sh, strb);
|
|
++num;
|
|
}
|
|
#endif
|
|
|
|
sh->EndObservingDocument();
|
|
sh->Destroy();
|
|
if (VERIFY_REFLOW_NOISY & gVerifyReflowFlags) {
|
|
printf("Finished Verifying Reflow...\n");
|
|
}
|
|
|
|
return ok;
|
|
}
|
|
|
|
// Layout debugging hooks
|
|
void PresShell::ListComputedStyles(FILE* out, int32_t aIndent) {
|
|
nsIFrame* rootFrame = GetRootFrame();
|
|
if (rootFrame) {
|
|
rootFrame->Style()->List(out, aIndent);
|
|
}
|
|
|
|
// The root element's frame's ComputedStyle is the root of a separate tree.
|
|
Element* rootElement = mDocument->GetRootElement();
|
|
if (rootElement) {
|
|
nsIFrame* rootElementFrame = rootElement->GetPrimaryFrame();
|
|
if (rootElementFrame) {
|
|
rootElementFrame->Style()->List(out, aIndent);
|
|
}
|
|
}
|
|
}
|
|
|
|
void PresShell::ListStyleSheets(FILE* out, int32_t aIndent) {
|
|
int32_t sheetCount = mStyleSet->SheetCount(SheetType::Doc);
|
|
for (int32_t i = 0; i < sheetCount; ++i) {
|
|
mStyleSet->StyleSheetAt(SheetType::Doc, i)->List(out, aIndent);
|
|
fputs("\n", out);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
//=============================================================
|
|
//=============================================================
|
|
//-- Debug Reflow Counts
|
|
//=============================================================
|
|
//=============================================================
|
|
#ifdef MOZ_REFLOW_PERF
|
|
//-------------------------------------------------------------
|
|
void PresShell::DumpReflows() {
|
|
if (mReflowCountMgr) {
|
|
nsAutoCString uriStr;
|
|
if (mDocument) {
|
|
nsIURI* uri = mDocument->GetDocumentURI();
|
|
if (uri) {
|
|
uri->GetPathQueryRef(uriStr);
|
|
}
|
|
}
|
|
mReflowCountMgr->DisplayTotals(uriStr.get());
|
|
mReflowCountMgr->DisplayHTMLTotals(uriStr.get());
|
|
mReflowCountMgr->DisplayDiffsInTotals();
|
|
}
|
|
}
|
|
|
|
//-------------------------------------------------------------
|
|
void PresShell::CountReflows(const char* aName, nsIFrame* aFrame) {
|
|
if (mReflowCountMgr) {
|
|
mReflowCountMgr->Add(aName, aFrame);
|
|
}
|
|
}
|
|
|
|
//-------------------------------------------------------------
|
|
void PresShell::PaintCount(const char* aName, gfxContext* aRenderingContext,
|
|
nsPresContext* aPresContext, nsIFrame* aFrame,
|
|
const nsPoint& aOffset, uint32_t aColor) {
|
|
if (mReflowCountMgr) {
|
|
mReflowCountMgr->PaintCount(aName, aRenderingContext, aPresContext, aFrame,
|
|
aOffset, aColor);
|
|
}
|
|
}
|
|
|
|
//-------------------------------------------------------------
|
|
void PresShell::SetPaintFrameCount(bool aPaintFrameCounts) {
|
|
if (mReflowCountMgr) {
|
|
mReflowCountMgr->SetPaintFrameCounts(aPaintFrameCounts);
|
|
}
|
|
}
|
|
|
|
bool PresShell::IsPaintingFrameCounts() {
|
|
if (mReflowCountMgr) return mReflowCountMgr->IsPaintingFrameCounts();
|
|
return false;
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
//-- Reflow Counter Classes Impls
|
|
//------------------------------------------------------------------
|
|
|
|
//------------------------------------------------------------------
|
|
ReflowCounter::ReflowCounter(ReflowCountMgr* aMgr) : mMgr(aMgr) {
|
|
ClearTotals();
|
|
SetTotalsCache();
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
ReflowCounter::~ReflowCounter() {}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCounter::ClearTotals() { mTotal = 0; }
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCounter::SetTotalsCache() { mCacheTotal = mTotal; }
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCounter::CalcDiffInTotals() { mCacheTotal = mTotal - mCacheTotal; }
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCounter::DisplayTotals(const char* aStr) {
|
|
DisplayTotals(mTotal, aStr ? aStr : "Totals");
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCounter::DisplayDiffTotals(const char* aStr) {
|
|
DisplayTotals(mCacheTotal, aStr ? aStr : "Diff Totals");
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCounter::DisplayHTMLTotals(const char* aStr) {
|
|
DisplayHTMLTotals(mTotal, aStr ? aStr : "Totals");
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCounter::DisplayTotals(uint32_t aTotal, const char* aTitle) {
|
|
// figure total
|
|
if (aTotal == 0) {
|
|
return;
|
|
}
|
|
ReflowCounter* gTots = (ReflowCounter*)mMgr->LookUp(kGrandTotalsStr);
|
|
|
|
printf("%25s\t", aTitle);
|
|
printf("%d\t", aTotal);
|
|
if (gTots != this && aTotal > 0) {
|
|
gTots->Add(aTotal);
|
|
}
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCounter::DisplayHTMLTotals(uint32_t aTotal, const char* aTitle) {
|
|
if (aTotal == 0) {
|
|
return;
|
|
}
|
|
|
|
ReflowCounter* gTots = (ReflowCounter*)mMgr->LookUp(kGrandTotalsStr);
|
|
FILE* fd = mMgr->GetOutFile();
|
|
if (!fd) {
|
|
return;
|
|
}
|
|
|
|
fprintf(fd, "<tr><td><center>%s</center></td>", aTitle);
|
|
fprintf(fd, "<td><center>%d</center></td></tr>\n", aTotal);
|
|
|
|
if (gTots != this && aTotal > 0) {
|
|
gTots->Add(aTotal);
|
|
}
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
//-- ReflowCountMgr
|
|
//------------------------------------------------------------------
|
|
|
|
#define KEY_BUF_SIZE_FOR_PTR 24 // adequate char[] buffer to sprintf a pointer
|
|
|
|
ReflowCountMgr::ReflowCountMgr() : mCounts(10), mIndiFrameCounts(10) {
|
|
mCycledOnce = false;
|
|
mDumpFrameCounts = false;
|
|
mDumpFrameByFrameCounts = false;
|
|
mPaintFrameByFrameCounts = false;
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
ReflowCountMgr::~ReflowCountMgr() {}
|
|
|
|
//------------------------------------------------------------------
|
|
ReflowCounter* ReflowCountMgr::LookUp(const char* aName) {
|
|
return mCounts.Get(aName);
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCountMgr::Add(const char* aName, nsIFrame* aFrame) {
|
|
NS_ASSERTION(aName != nullptr, "Name shouldn't be null!");
|
|
|
|
if (mDumpFrameCounts) {
|
|
ReflowCounter* counter = mCounts.LookupForAdd(aName).OrInsert(
|
|
[this]() { return new ReflowCounter(this); });
|
|
counter->Add();
|
|
}
|
|
|
|
if ((mDumpFrameByFrameCounts || mPaintFrameByFrameCounts) &&
|
|
aFrame != nullptr) {
|
|
char key[KEY_BUF_SIZE_FOR_PTR];
|
|
SprintfLiteral(key, "%p", (void*)aFrame);
|
|
IndiReflowCounter* counter =
|
|
mIndiFrameCounts.LookupForAdd(key).OrInsert([&aName, &aFrame, this]() {
|
|
auto counter = new IndiReflowCounter(this);
|
|
counter->mFrame = aFrame;
|
|
counter->mName.AssignASCII(aName);
|
|
return counter;
|
|
});
|
|
// this eliminates extra counts from super classes
|
|
if (counter != nullptr && counter->mName.EqualsASCII(aName)) {
|
|
counter->mCount++;
|
|
counter->mCounter.Add(1);
|
|
}
|
|
}
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCountMgr::PaintCount(const char* aName,
|
|
gfxContext* aRenderingContext,
|
|
nsPresContext* aPresContext, nsIFrame* aFrame,
|
|
const nsPoint& aOffset, uint32_t aColor) {
|
|
if (mPaintFrameByFrameCounts && aFrame != nullptr) {
|
|
char key[KEY_BUF_SIZE_FOR_PTR];
|
|
SprintfLiteral(key, "%p", (void*)aFrame);
|
|
IndiReflowCounter* counter = mIndiFrameCounts.Get(key);
|
|
if (counter != nullptr && counter->mName.EqualsASCII(aName)) {
|
|
DrawTarget* drawTarget = aRenderingContext->GetDrawTarget();
|
|
int32_t appUnitsPerDevPixel = aPresContext->AppUnitsPerDevPixel();
|
|
|
|
aRenderingContext->Save();
|
|
gfxPoint devPixelOffset =
|
|
nsLayoutUtils::PointToGfxPoint(aOffset, appUnitsPerDevPixel);
|
|
aRenderingContext->SetMatrixDouble(
|
|
aRenderingContext->CurrentMatrixDouble().PreTranslate(
|
|
devPixelOffset));
|
|
|
|
// We don't care about the document language or user fonts here;
|
|
// just get a default Latin font.
|
|
nsFont font(eFamily_serif, nsPresContext::CSSPixelsToAppUnits(11));
|
|
nsFontMetrics::Params params;
|
|
params.language = nsGkAtoms::x_western;
|
|
params.textPerf = aPresContext->GetTextPerfMetrics();
|
|
RefPtr<nsFontMetrics> fm =
|
|
aPresContext->DeviceContext()->GetMetricsFor(font, params);
|
|
|
|
char buf[16];
|
|
int len = SprintfLiteral(buf, "%d", counter->mCount);
|
|
nscoord x = 0, y = fm->MaxAscent();
|
|
nscoord width, height = fm->MaxHeight();
|
|
fm->SetTextRunRTL(false);
|
|
width = fm->GetWidth(buf, len, drawTarget);
|
|
|
|
Color color;
|
|
Color color2;
|
|
if (aColor != 0) {
|
|
color = Color::FromABGR(aColor);
|
|
color2 = Color(0.f, 0.f, 0.f);
|
|
} else {
|
|
gfx::Float rc = 0.f, gc = 0.f, bc = 0.f;
|
|
if (counter->mCount < 5) {
|
|
rc = 1.f;
|
|
gc = 1.f;
|
|
} else if (counter->mCount < 11) {
|
|
gc = 1.f;
|
|
} else {
|
|
rc = 1.f;
|
|
}
|
|
color = Color(rc, gc, bc);
|
|
color2 = Color(rc / 2, gc / 2, bc / 2);
|
|
}
|
|
|
|
nsRect rect(0, 0, width + 15, height + 15);
|
|
Rect devPxRect =
|
|
NSRectToSnappedRect(rect, appUnitsPerDevPixel, *drawTarget);
|
|
ColorPattern black(ToDeviceColor(Color(0.f, 0.f, 0.f, 1.f)));
|
|
drawTarget->FillRect(devPxRect, black);
|
|
|
|
aRenderingContext->SetColor(color2);
|
|
fm->DrawString(buf, len, x + 15, y + 15, aRenderingContext);
|
|
aRenderingContext->SetColor(color);
|
|
fm->DrawString(buf, len, x, y, aRenderingContext);
|
|
|
|
aRenderingContext->Restore();
|
|
}
|
|
}
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCountMgr::DoGrandTotals() {
|
|
auto entry = mCounts.LookupForAdd(kGrandTotalsStr);
|
|
if (!entry) {
|
|
entry.OrInsert([this]() { return new ReflowCounter(this); });
|
|
} else {
|
|
entry.Data()->ClearTotals();
|
|
}
|
|
|
|
printf("\t\t\t\tTotal\n");
|
|
for (uint32_t i = 0; i < 78; i++) {
|
|
printf("-");
|
|
}
|
|
printf("\n");
|
|
for (auto iter = mCounts.Iter(); !iter.Done(); iter.Next()) {
|
|
iter.Data()->DisplayTotals(iter.Key());
|
|
}
|
|
}
|
|
|
|
static void RecurseIndiTotals(
|
|
nsPresContext* aPresContext,
|
|
nsClassHashtable<nsCharPtrHashKey, IndiReflowCounter>& aHT,
|
|
nsIFrame* aParentFrame, int32_t aLevel) {
|
|
if (aParentFrame == nullptr) {
|
|
return;
|
|
}
|
|
|
|
char key[KEY_BUF_SIZE_FOR_PTR];
|
|
SprintfLiteral(key, "%p", (void*)aParentFrame);
|
|
IndiReflowCounter* counter = aHT.Get(key);
|
|
if (counter) {
|
|
counter->mHasBeenOutput = true;
|
|
char* name = ToNewCString(counter->mName);
|
|
for (int32_t i = 0; i < aLevel; i++) printf(" ");
|
|
printf("%s - %p [%d][", name, (void*)aParentFrame, counter->mCount);
|
|
printf("%d", counter->mCounter.GetTotal());
|
|
printf("]\n");
|
|
free(name);
|
|
}
|
|
|
|
for (nsIFrame* child : aParentFrame->PrincipalChildList()) {
|
|
RecurseIndiTotals(aPresContext, aHT, child, aLevel + 1);
|
|
}
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCountMgr::DoIndiTotalsTree() {
|
|
printf("\n------------------------------------------------\n");
|
|
printf("-- Individual Frame Counts\n");
|
|
printf("------------------------------------------------\n");
|
|
|
|
if (mPresShell) {
|
|
nsIFrame* rootFrame = mPresShell->GetRootFrame();
|
|
RecurseIndiTotals(mPresContext, mIndiFrameCounts, rootFrame, 0);
|
|
printf("------------------------------------------------\n");
|
|
printf("-- Individual Counts of Frames not in Root Tree\n");
|
|
printf("------------------------------------------------\n");
|
|
for (auto iter = mIndiFrameCounts.Iter(); !iter.Done(); iter.Next()) {
|
|
IndiReflowCounter* counter = iter.Data();
|
|
if (!counter->mHasBeenOutput) {
|
|
char* name = ToNewCString(counter->mName);
|
|
printf("%s - %p [%d][", name, (void*)counter->mFrame,
|
|
counter->mCount);
|
|
printf("%d", counter->mCounter.GetTotal());
|
|
printf("]\n");
|
|
free(name);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCountMgr::DoGrandHTMLTotals() {
|
|
auto entry = mCounts.LookupForAdd(kGrandTotalsStr);
|
|
if (!entry) {
|
|
entry.OrInsert([this]() { return new ReflowCounter(this); });
|
|
} else {
|
|
entry.Data()->ClearTotals();
|
|
}
|
|
|
|
static const char* title[] = {"Class", "Reflows"};
|
|
fprintf(mFD, "<tr>");
|
|
for (uint32_t i = 0; i < ArrayLength(title); i++) {
|
|
fprintf(mFD, "<td><center><b>%s<b></center></td>", title[i]);
|
|
}
|
|
fprintf(mFD, "</tr>\n");
|
|
|
|
for (auto iter = mCounts.Iter(); !iter.Done(); iter.Next()) {
|
|
iter.Data()->DisplayHTMLTotals(iter.Key());
|
|
}
|
|
}
|
|
|
|
//------------------------------------
|
|
void ReflowCountMgr::DisplayTotals(const char* aStr) {
|
|
#ifdef DEBUG_rods
|
|
printf("%s\n", aStr ? aStr : "No name");
|
|
#endif
|
|
if (mDumpFrameCounts) {
|
|
DoGrandTotals();
|
|
}
|
|
if (mDumpFrameByFrameCounts) {
|
|
DoIndiTotalsTree();
|
|
}
|
|
}
|
|
//------------------------------------
|
|
void ReflowCountMgr::DisplayHTMLTotals(const char* aStr) {
|
|
#ifdef WIN32x // XXX NOT XP!
|
|
char name[1024];
|
|
|
|
char* sptr = strrchr(aStr, '/');
|
|
if (sptr) {
|
|
sptr++;
|
|
strcpy(name, sptr);
|
|
char* eptr = strrchr(name, '.');
|
|
if (eptr) {
|
|
*eptr = 0;
|
|
}
|
|
strcat(name, "_stats.html");
|
|
}
|
|
mFD = fopen(name, "w");
|
|
if (mFD) {
|
|
fprintf(mFD, "<html><head><title>Reflow Stats</title></head><body>\n");
|
|
const char* title = aStr ? aStr : "No name";
|
|
fprintf(mFD,
|
|
"<center><b>%s</b><br><table border=1 "
|
|
"style=\"background-color:#e0e0e0\">",
|
|
title);
|
|
DoGrandHTMLTotals();
|
|
fprintf(mFD, "</center></table>\n");
|
|
fprintf(mFD, "</body></html>\n");
|
|
fclose(mFD);
|
|
mFD = nullptr;
|
|
}
|
|
#endif // not XP!
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCountMgr::ClearTotals() {
|
|
for (auto iter = mCounts.Iter(); !iter.Done(); iter.Next()) {
|
|
iter.Data()->ClearTotals();
|
|
}
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCountMgr::ClearGrandTotals() {
|
|
auto entry = mCounts.LookupForAdd(kGrandTotalsStr);
|
|
if (!entry) {
|
|
entry.OrInsert([this]() { return new ReflowCounter(this); });
|
|
} else {
|
|
entry.Data()->ClearTotals();
|
|
entry.Data()->SetTotalsCache();
|
|
}
|
|
}
|
|
|
|
//------------------------------------------------------------------
|
|
void ReflowCountMgr::DisplayDiffsInTotals() {
|
|
if (mCycledOnce) {
|
|
printf("Differences\n");
|
|
for (int32_t i = 0; i < 78; i++) {
|
|
printf("-");
|
|
}
|
|
printf("\n");
|
|
ClearGrandTotals();
|
|
}
|
|
|
|
for (auto iter = mCounts.Iter(); !iter.Done(); iter.Next()) {
|
|
if (mCycledOnce) {
|
|
iter.Data()->CalcDiffInTotals();
|
|
iter.Data()->DisplayDiffTotals(iter.Key());
|
|
}
|
|
iter.Data()->SetTotalsCache();
|
|
}
|
|
|
|
mCycledOnce = true;
|
|
}
|
|
|
|
#endif // MOZ_REFLOW_PERF
|
|
|
|
nsIFrame* nsIPresShell::GetAbsoluteContainingBlock(nsIFrame* aFrame) {
|
|
return FrameConstructor()->GetAbsoluteContainingBlock(
|
|
aFrame, nsCSSFrameConstructor::ABS_POS);
|
|
}
|
|
|
|
#ifdef ACCESSIBILITY
|
|
bool nsIPresShell::IsAccessibilityActive() {
|
|
return GetAccService() != nullptr;
|
|
}
|
|
|
|
nsAccessibilityService* nsIPresShell::AccService() { return GetAccService(); }
|
|
#endif
|
|
|
|
// Asks our docshell whether we're active.
|
|
void PresShell::QueryIsActive() {
|
|
nsCOMPtr<nsISupports> container = mPresContext->GetContainerWeak();
|
|
if (mDocument) {
|
|
nsIDocument* displayDoc = mDocument->GetDisplayDocument();
|
|
if (displayDoc) {
|
|
// Ok, we're an external resource document -- we need to use our display
|
|
// document's docshell to determine "IsActive" status, since we lack
|
|
// a container.
|
|
MOZ_ASSERT(!container,
|
|
"external resource doc shouldn't have its own container");
|
|
|
|
nsPresContext* displayPresContext = displayDoc->GetPresContext();
|
|
if (displayPresContext) {
|
|
container = displayPresContext->GetContainerWeak();
|
|
}
|
|
}
|
|
}
|
|
|
|
nsCOMPtr<nsIDocShell> docshell(do_QueryInterface(container));
|
|
if (docshell) {
|
|
bool isActive;
|
|
nsresult rv = docshell->GetIsActive(&isActive);
|
|
// Even though in theory the docshell here could be "Inactive and
|
|
// Foreground", thus implying aIsHidden=false for SetIsActive(),
|
|
// this is a newly created PresShell so we'd like to invalidate anyway
|
|
// upon being made active to ensure that the contents get painted.
|
|
if (NS_SUCCEEDED(rv)) SetIsActive(isActive);
|
|
}
|
|
}
|
|
|
|
// Helper for propagating mIsActive changes to external resources
|
|
static bool SetExternalResourceIsActive(nsIDocument* aDocument,
|
|
void* aClosure) {
|
|
nsIPresShell* shell = aDocument->GetShell();
|
|
if (shell) {
|
|
shell->SetIsActive(*static_cast<bool*>(aClosure));
|
|
}
|
|
return true;
|
|
}
|
|
|
|
static void SetPluginIsActive(nsISupports* aSupports, void* aClosure) {
|
|
nsCOMPtr<nsIContent> content(do_QueryInterface(aSupports));
|
|
if (!content) {
|
|
return;
|
|
}
|
|
|
|
nsIFrame* frame = content->GetPrimaryFrame();
|
|
nsIObjectFrame* objectFrame = do_QueryFrame(frame);
|
|
if (objectFrame) {
|
|
objectFrame->SetIsDocumentActive(*static_cast<bool*>(aClosure));
|
|
}
|
|
}
|
|
|
|
nsresult PresShell::SetIsActive(bool aIsActive) {
|
|
MOZ_ASSERT(mDocument, "should only be called with a document");
|
|
|
|
mIsActive = aIsActive;
|
|
|
|
nsPresContext* presContext = GetPresContext();
|
|
if (presContext &&
|
|
presContext->RefreshDriver()->GetPresContext() == presContext) {
|
|
presContext->RefreshDriver()->SetThrottled(!mIsActive);
|
|
}
|
|
|
|
// Propagate state-change to my resource documents' PresShells
|
|
mDocument->EnumerateExternalResources(SetExternalResourceIsActive,
|
|
&aIsActive);
|
|
mDocument->EnumerateActivityObservers(SetPluginIsActive, &aIsActive);
|
|
nsresult rv = UpdateImageLockingState();
|
|
#ifdef ACCESSIBILITY
|
|
if (aIsActive) {
|
|
nsAccessibilityService* accService = AccService();
|
|
if (accService) {
|
|
accService->PresShellActivated(this);
|
|
}
|
|
}
|
|
#endif
|
|
return rv;
|
|
}
|
|
|
|
void PresShell::UpdateViewportOverridden(bool aAfterInitialization) {
|
|
// Determine if we require a MobileViewportManager.
|
|
bool needMVM = nsLayoutUtils::ShouldHandleMetaViewport(mDocument) ||
|
|
gfxPrefs::APZAllowZooming();
|
|
|
|
if (needMVM == !!mMobileViewportManager) {
|
|
// Either we've need one and we've already got it, or we don't need one
|
|
// and don't have it. Either way, we're done.
|
|
return;
|
|
}
|
|
|
|
if (needMVM) {
|
|
if (mPresContext->IsRootContentDocument()) {
|
|
mMobileViewportManager = new MobileViewportManager(this, mDocument);
|
|
|
|
if (aAfterInitialization) {
|
|
// Setting the initial viewport will trigger a reflow.
|
|
mMobileViewportManager->SetInitialViewport();
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
MOZ_ASSERT(mMobileViewportManager,
|
|
"Shouldn't reach this without a MobileViewportManager.");
|
|
mMobileViewportManager->Destroy();
|
|
mMobileViewportManager = nullptr;
|
|
|
|
if (aAfterInitialization) {
|
|
// Force a reflow to our correct size by going back to the docShell
|
|
// and asking it to reassert its size. This is necessary because
|
|
// everything underneath the docShell, like the ViewManager, has been
|
|
// altered by the MobileViewportManager in an irreversible way.
|
|
nsDocShell* docShell =
|
|
static_cast<nsDocShell*>(GetPresContext()->GetDocShell());
|
|
int32_t width, height;
|
|
docShell->GetSize(&width, &height);
|
|
docShell->SetSize(width, height, false);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Determines the current image locking state. Called when one of the
|
|
* dependent factors changes.
|
|
*/
|
|
nsresult PresShell::UpdateImageLockingState() {
|
|
// We're locked if we're both thawed and active.
|
|
bool locked = !mFrozen && mIsActive;
|
|
|
|
nsresult rv = mDocument->ImageTracker()->SetLockingState(locked);
|
|
|
|
if (locked) {
|
|
// Request decodes for visible image frames; we want to start decoding as
|
|
// quickly as possible when we get foregrounded to minimize flashing.
|
|
for (auto iter = mApproximatelyVisibleFrames.Iter(); !iter.Done();
|
|
iter.Next()) {
|
|
nsImageFrame* imageFrame = do_QueryFrame(iter.Get()->GetKey());
|
|
if (imageFrame) {
|
|
imageFrame->MaybeDecodeForPredictedSize();
|
|
}
|
|
}
|
|
}
|
|
|
|
return rv;
|
|
}
|
|
|
|
PresShell* PresShell::GetRootPresShell() {
|
|
if (mPresContext) {
|
|
nsPresContext* rootPresContext = mPresContext->GetRootPresContext();
|
|
if (rootPresContext) {
|
|
return static_cast<PresShell*>(rootPresContext->PresShell());
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
void PresShell::AddSizeOfIncludingThis(nsWindowSizes& aSizes) const {
|
|
MallocSizeOf mallocSizeOf = aSizes.mState.mMallocSizeOf;
|
|
mFrameArena.AddSizeOfExcludingThis(aSizes);
|
|
aSizes.mLayoutPresShellSize += mallocSizeOf(this);
|
|
if (mCaret) {
|
|
aSizes.mLayoutPresShellSize += mCaret->SizeOfIncludingThis(mallocSizeOf);
|
|
}
|
|
aSizes.mLayoutPresShellSize +=
|
|
mApproximatelyVisibleFrames.ShallowSizeOfExcludingThis(mallocSizeOf) +
|
|
mFramesToDirty.ShallowSizeOfExcludingThis(mallocSizeOf);
|
|
|
|
StyleSet()->AddSizeOfIncludingThis(aSizes);
|
|
|
|
aSizes.mLayoutTextRunsSize += SizeOfTextRuns(mallocSizeOf);
|
|
|
|
aSizes.mLayoutPresContextSize +=
|
|
mPresContext->SizeOfIncludingThis(mallocSizeOf);
|
|
|
|
mFrameConstructor->AddSizeOfIncludingThis(aSizes);
|
|
}
|
|
|
|
size_t PresShell::SizeOfTextRuns(MallocSizeOf aMallocSizeOf) const {
|
|
nsIFrame* rootFrame = mFrameConstructor->GetRootFrame();
|
|
if (!rootFrame) {
|
|
return 0;
|
|
}
|
|
|
|
// clear the TEXT_RUN_MEMORY_ACCOUNTED flags
|
|
nsLayoutUtils::SizeOfTextRunsForFrames(rootFrame, nullptr,
|
|
/* clear = */ true);
|
|
|
|
// collect the total memory in use for textruns
|
|
return nsLayoutUtils::SizeOfTextRunsForFrames(rootFrame, aMallocSizeOf,
|
|
/* clear = */ false);
|
|
}
|
|
|
|
void nsIPresShell::MarkFixedFramesForReflow(IntrinsicDirty aIntrinsicDirty) {
|
|
nsIFrame* rootFrame = mFrameConstructor->GetRootFrame();
|
|
if (rootFrame) {
|
|
const nsFrameList& childList =
|
|
rootFrame->GetChildList(nsIFrame::kFixedList);
|
|
for (nsIFrame* childFrame : childList) {
|
|
FrameNeedsReflow(childFrame, aIntrinsicDirty, NS_FRAME_IS_DIRTY);
|
|
}
|
|
}
|
|
}
|
|
|
|
void nsIPresShell::SetVisualViewportSize(nscoord aWidth, nscoord aHeight) {
|
|
if (!mVisualViewportSizeSet || mVisualViewportSize.width != aWidth ||
|
|
mVisualViewportSize.height != aHeight) {
|
|
mVisualViewportSizeSet = true;
|
|
mVisualViewportSize.width = aWidth;
|
|
mVisualViewportSize.height = aHeight;
|
|
|
|
if (nsIScrollableFrame* rootScrollFrame =
|
|
GetRootScrollFrameAsScrollable()) {
|
|
rootScrollFrame->MarkScrollbarsDirtyForReflow();
|
|
}
|
|
MarkFixedFramesForReflow(nsIPresShell::eResize);
|
|
|
|
if (auto* window = nsGlobalWindowInner::Cast(mDocument->GetInnerWindow())) {
|
|
window->VisualViewport()->PostResizeEvent();
|
|
}
|
|
}
|
|
}
|
|
|
|
void nsIPresShell::SetVisualViewportOffset(
|
|
const nsPoint& aScrollOffset, const nsPoint& aPrevLayoutScrollPos) {
|
|
if (mVisualViewportOffset != aScrollOffset) {
|
|
nsPoint prevOffset = mVisualViewportOffset;
|
|
mVisualViewportOffset = aScrollOffset;
|
|
|
|
if (auto* window = nsGlobalWindowInner::Cast(mDocument->GetInnerWindow())) {
|
|
window->VisualViewport()->PostScrollEvent(prevOffset,
|
|
aPrevLayoutScrollPos);
|
|
}
|
|
}
|
|
}
|
|
|
|
nsPoint nsIPresShell::GetVisualViewportOffsetRelativeToLayoutViewport() const {
|
|
return GetVisualViewportOffset() - GetLayoutViewportOffset();
|
|
}
|
|
|
|
nsPoint nsIPresShell::GetLayoutViewportOffset() const {
|
|
nsPoint result;
|
|
if (nsIScrollableFrame* sf = GetRootScrollFrameAsScrollable()) {
|
|
result = sf->GetScrollPosition();
|
|
}
|
|
return result;
|
|
}
|
|
|
|
void nsIPresShell::RecomputeFontSizeInflationEnabled() {
|
|
mFontSizeInflationEnabled = DetermineFontSizeInflationState();
|
|
|
|
float fontScale = nsLayoutUtils::SystemFontScale();
|
|
if (fontScale == 0.0f) {
|
|
return;
|
|
}
|
|
|
|
MOZ_ASSERT(mDocument);
|
|
MOZ_ASSERT(mPresContext);
|
|
if (mFontSizeInflationEnabled || mDocument->IsSyntheticDocument()) {
|
|
mPresContext->SetSystemFontScale(1.0f);
|
|
} else {
|
|
mPresContext->SetSystemFontScale(fontScale);
|
|
}
|
|
}
|
|
|
|
bool nsIPresShell::DetermineFontSizeInflationState() {
|
|
MOZ_ASSERT(mPresContext, "our pres context should not be null");
|
|
if (mPresContext->IsChrome()) {
|
|
return false;
|
|
}
|
|
|
|
if (FontSizeInflationEmPerLine() == 0 && FontSizeInflationMinTwips() == 0) {
|
|
return false;
|
|
}
|
|
|
|
// Force-enabling font inflation always trumps the heuristics here.
|
|
if (!FontSizeInflationForceEnabled()) {
|
|
if (TabChild* tab = TabChild::GetFrom(this)) {
|
|
// We're in a child process. Cancel inflation if we're not
|
|
// async-pan zoomed.
|
|
if (!tab->AsyncPanZoomEnabled()) {
|
|
return false;
|
|
}
|
|
} else if (XRE_IsParentProcess()) {
|
|
// We're in the master process. Cancel inflation if it's been
|
|
// explicitly disabled.
|
|
if (FontSizeInflationDisabledInMasterProcess()) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
// XXXjwir3:
|
|
// See bug 706918, comment 23 for more information on this particular section
|
|
// of the code. We're using "screen size" in place of the size of the content
|
|
// area, because on mobile, these are close or equal. This will work for our
|
|
// purposes (bug 706198), but it will need to be changed in the future to be
|
|
// more correct when we bring the rest of the viewport code into platform.
|
|
// We actually want the size of the content area, in the event that we don't
|
|
// have any metadata about the width and/or height. On mobile, the screen size
|
|
// and the size of the content area are very close, or the same value.
|
|
// In XUL fennec, the content area is the size of the <browser> widget, but
|
|
// in native fennec, the content area is the size of the Gecko LayerView
|
|
// object.
|
|
|
|
// TODO:
|
|
// Once bug 716575 has been resolved, this code should be changed so that it
|
|
// does the right thing on all platforms.
|
|
nsresult rv;
|
|
nsCOMPtr<nsIScreenManager> screenMgr =
|
|
do_GetService("@mozilla.org/gfx/screenmanager;1", &rv);
|
|
if (!NS_SUCCEEDED(rv)) {
|
|
return false;
|
|
}
|
|
|
|
nsCOMPtr<nsIScreen> screen;
|
|
screenMgr->GetPrimaryScreen(getter_AddRefs(screen));
|
|
if (screen) {
|
|
int32_t screenLeft, screenTop, screenWidth, screenHeight;
|
|
screen->GetRect(&screenLeft, &screenTop, &screenWidth, &screenHeight);
|
|
|
|
nsViewportInfo vInf = GetDocument()->GetViewportInfo(
|
|
ScreenIntSize(screenWidth, screenHeight));
|
|
|
|
if (vInf.GetDefaultZoom() >= CSSToScreenScale(1.0f) ||
|
|
vInf.IsAutoSizeEnabled()) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void PresShell::PausePainting() {
|
|
if (GetPresContext()->RefreshDriver()->GetPresContext() != GetPresContext())
|
|
return;
|
|
|
|
mPaintingIsFrozen = true;
|
|
GetPresContext()->RefreshDriver()->Freeze();
|
|
}
|
|
|
|
void PresShell::ResumePainting() {
|
|
if (GetPresContext()->RefreshDriver()->GetPresContext() != GetPresContext())
|
|
return;
|
|
|
|
mPaintingIsFrozen = false;
|
|
GetPresContext()->RefreshDriver()->Thaw();
|
|
}
|
|
|
|
void nsIPresShell::SyncWindowProperties(nsView* aView) {
|
|
nsIFrame* frame = aView->GetFrame();
|
|
if (frame && mPresContext) {
|
|
// CreateReferenceRenderingContext can return nullptr
|
|
RefPtr<gfxContext> rcx(CreateReferenceRenderingContext());
|
|
nsContainerFrame::SyncWindowProperties(mPresContext, frame, aView, rcx, 0);
|
|
}
|
|
}
|
|
|
|
static SheetType ToSheetType(uint32_t aServiceSheetType) {
|
|
switch (aServiceSheetType) {
|
|
case nsIStyleSheetService::AGENT_SHEET:
|
|
return SheetType::Agent;
|
|
break;
|
|
case nsIStyleSheetService::USER_SHEET:
|
|
return SheetType::User;
|
|
break;
|
|
default:
|
|
MOZ_FALLTHROUGH_ASSERT("unexpected aSheetType value");
|
|
case nsIStyleSheetService::AUTHOR_SHEET:
|
|
return SheetType::Doc;
|
|
}
|
|
}
|
|
|
|
nsresult nsIPresShell::HasRuleProcessorUsedByMultipleStyleSets(
|
|
uint32_t aSheetType, bool* aRetVal) {
|
|
*aRetVal = false;
|
|
return NS_OK;
|
|
}
|
|
|
|
void PresShell::NotifyStyleSheetServiceSheetAdded(StyleSheet* aSheet,
|
|
uint32_t aSheetType) {
|
|
if (!mStyleSet) {
|
|
return;
|
|
}
|
|
|
|
switch (aSheetType) {
|
|
case nsIStyleSheetService::AGENT_SHEET:
|
|
AddAgentSheet(aSheet);
|
|
break;
|
|
case nsIStyleSheetService::USER_SHEET:
|
|
AddUserSheet(aSheet);
|
|
break;
|
|
case nsIStyleSheetService::AUTHOR_SHEET:
|
|
AddAuthorSheet(aSheet);
|
|
break;
|
|
default:
|
|
MOZ_ASSERT_UNREACHABLE("unexpected aSheetType value");
|
|
break;
|
|
}
|
|
}
|
|
|
|
void PresShell::NotifyStyleSheetServiceSheetRemoved(StyleSheet* aSheet,
|
|
uint32_t aSheetType) {
|
|
if (!mStyleSet) {
|
|
return;
|
|
}
|
|
|
|
RemoveSheet(ToSheetType(aSheetType), aSheet);
|
|
}
|
|
|
|
nsIContent* PresShell::GetOverrideClickTarget(WidgetGUIEvent* aEvent,
|
|
nsIFrame* aFrame) {
|
|
if (aEvent->mMessage != eMouseUp) {
|
|
return nullptr;
|
|
}
|
|
|
|
MOZ_ASSERT(aEvent->mClass == eMouseEventClass);
|
|
WidgetMouseEvent* mouseEvent = aEvent->AsMouseEvent();
|
|
|
|
uint32_t flags = 0;
|
|
nsPoint eventPoint =
|
|
nsLayoutUtils::GetEventCoordinatesRelativeTo(aEvent, aFrame);
|
|
if (mouseEvent->mIgnoreRootScrollFrame) {
|
|
flags |= INPUT_IGNORE_ROOT_SCROLL_FRAME;
|
|
}
|
|
|
|
nsIFrame* target =
|
|
FindFrameTargetedByInputEvent(aEvent, aFrame, eventPoint, flags);
|
|
if (!target) {
|
|
return nullptr;
|
|
}
|
|
|
|
nsIContent* overrideClickTarget = target->GetContent();
|
|
while (overrideClickTarget && !overrideClickTarget->IsElement()) {
|
|
overrideClickTarget = overrideClickTarget->GetFlattenedTreeParent();
|
|
}
|
|
return overrideClickTarget;
|
|
}
|