зеркало из https://github.com/mozilla/gecko-dev.git
908 строки
35 KiB
C++
908 строки
35 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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#ifndef mozilla_PresShell_h
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#define mozilla_PresShell_h
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#include "MobileViewportManager.h"
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#include "mozilla/Attributes.h"
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#include "mozilla/EventForwards.h"
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#include "mozilla/layers/FocusTarget.h"
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#include "mozilla/MemoryReporting.h"
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#include "mozilla/StyleSetHandle.h"
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#include "mozilla/UniquePtr.h"
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#include "nsAutoPtr.h"
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#include "nsContentUtils.h" // For AddScriptBlocker().
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#include "nsCRT.h"
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#include "nsIObserver.h"
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#include "nsIPresShell.h"
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#include "nsISelectionController.h"
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#include "nsIWidget.h"
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#include "nsPresContext.h"
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#include "nsRefreshDriver.h"
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#include "nsStubDocumentObserver.h"
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#include "nsThreadUtils.h"
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#include "nsWeakReference.h"
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#include "TouchManager.h"
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#include "ZoomConstraintsClient.h"
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class nsIDocShell;
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class nsRange;
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struct RangePaintInfo;
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struct nsCallbackEventRequest;
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#ifdef MOZ_REFLOW_PERF
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class ReflowCountMgr;
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#endif
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class nsPresShellEventCB;
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class nsAutoCauseReflowNotifier;
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class AutoPointerEventTargetUpdater;
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namespace mozilla {
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namespace dom {
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class Element;
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class Selection;
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} // namespace dom
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class EventDispatchingCallback;
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// A set type for tracking visible frames, for use by the visibility code in
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// PresShell. The set contains nsIFrame* pointers.
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typedef nsTHashtable<nsPtrHashKey<nsIFrame>> VisibleFrames;
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// A hash table type for tracking visible regions, for use by the visibility
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// code in PresShell. The mapping is from view IDs to regions in the
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// coordinate system of that view's scrolled frame.
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typedef nsClassHashtable<nsUint64HashKey, mozilla::CSSIntRegion> VisibleRegions;
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// This is actually pref-controlled, but we use this value if we fail
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// to get the pref for any reason.
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#ifdef MOZ_WIDGET_ANDROID
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#define PAINTLOCK_EVENT_DELAY 250
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#else
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#define PAINTLOCK_EVENT_DELAY 5
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#endif
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class PresShell final : public nsIPresShell,
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public nsISelectionController,
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public nsIObserver,
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public nsSupportsWeakReference
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{
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protected:
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typedef mozilla::layers::FocusTarget FocusTarget;
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public:
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PresShell();
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// nsISupports
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NS_DECL_ISUPPORTS
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static bool AccessibleCaretEnabled(nsIDocShell* aDocShell);
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void Init(nsIDocument* aDocument, nsPresContext* aPresContext,
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nsViewManager* aViewManager, mozilla::StyleSetHandle aStyleSet);
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virtual void Destroy() override;
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virtual void UpdatePreferenceStyles() override;
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NS_IMETHOD GetSelection(RawSelectionType aRawSelectionType,
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nsISelection** aSelection) override;
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dom::Selection* GetDOMSelection(RawSelectionType aRawSelectionType) override;
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virtual mozilla::dom::Selection*
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GetCurrentSelection(SelectionType aSelectionType) override;
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virtual already_AddRefed<nsISelectionController>
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GetSelectionControllerForFocusedContent(
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nsIContent** aFocusedContent = nullptr) override;
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NS_IMETHOD SetDisplaySelection(int16_t aToggle) override;
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NS_IMETHOD GetDisplaySelection(int16_t *aToggle) override;
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NS_IMETHOD ScrollSelectionIntoView(RawSelectionType aRawSelectionType,
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SelectionRegion aRegion,
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int16_t aFlags) override;
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NS_IMETHOD RepaintSelection(RawSelectionType aRawSelectionType) override;
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virtual nsresult Initialize(nscoord aWidth, nscoord aHeight) override;
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virtual nsresult ResizeReflow(nscoord aWidth, nscoord aHeight,
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nscoord aOldWidth = 0, nscoord aOldHeight = 0,
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ResizeReflowOptions aOptions =
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ResizeReflowOptions::eBSizeExact) override;
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virtual nsresult ResizeReflowIgnoreOverride(nscoord aWidth, nscoord aHeight,
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nscoord aOldWidth, nscoord aOldHeight,
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ResizeReflowOptions aOptions =
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ResizeReflowOptions::eBSizeExact) override;
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virtual nsIPageSequenceFrame* GetPageSequenceFrame() const override;
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virtual nsCanvasFrame* GetCanvasFrame() const override;
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virtual void FrameNeedsReflow(nsIFrame *aFrame, IntrinsicDirty aIntrinsicDirty,
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nsFrameState aBitToAdd,
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ReflowRootHandling aRootHandling =
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eInferFromBitToAdd) override;
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virtual void FrameNeedsToContinueReflow(nsIFrame *aFrame) override;
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virtual void CancelAllPendingReflows() override;
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virtual void DoFlushPendingNotifications(mozilla::FlushType aType) override;
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virtual void DoFlushPendingNotifications(mozilla::ChangesToFlush aType) override;
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virtual void DestroyFramesForAndRestyle(mozilla::dom::Element* aElement) override;
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/**
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* Post a callback that should be handled after reflow has finished.
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*/
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virtual nsresult PostReflowCallback(nsIReflowCallback* aCallback) override;
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virtual void CancelReflowCallback(nsIReflowCallback* aCallback) override;
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virtual void ClearFrameRefs(nsIFrame* aFrame) override;
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virtual already_AddRefed<gfxContext> CreateReferenceRenderingContext() override;
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virtual nsresult GoToAnchor(const nsAString& aAnchorName, bool aScroll,
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uint32_t aAdditionalScrollFlags = 0) override;
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virtual nsresult ScrollToAnchor() override;
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virtual nsresult ScrollContentIntoView(nsIContent* aContent,
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ScrollAxis aVertical,
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ScrollAxis aHorizontal,
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uint32_t aFlags) override;
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virtual bool ScrollFrameRectIntoView(nsIFrame* aFrame,
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const nsRect& aRect,
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ScrollAxis aVertical,
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ScrollAxis aHorizontal,
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uint32_t aFlags) override;
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virtual nsRectVisibility GetRectVisibility(nsIFrame *aFrame,
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const nsRect &aRect,
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nscoord aMinTwips) const override;
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virtual void SetIgnoreFrameDestruction(bool aIgnore) override;
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virtual void NotifyDestroyingFrame(nsIFrame* aFrame) override;
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virtual nsresult CaptureHistoryState(nsILayoutHistoryState** aLayoutHistoryState) override;
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virtual void UnsuppressPainting() override;
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virtual nsresult GetAgentStyleSheets(
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nsTArray<RefPtr<mozilla::StyleSheet>>& aSheets) override;
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virtual nsresult SetAgentStyleSheets(
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const nsTArray<RefPtr<mozilla::StyleSheet>>& aSheets) override;
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virtual nsresult AddOverrideStyleSheet(mozilla::StyleSheet* aSheet) override;
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virtual nsresult RemoveOverrideStyleSheet(mozilla::StyleSheet* aSheet) override;
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virtual nsresult HandleEventWithTarget(
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mozilla::WidgetEvent* aEvent,
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nsIFrame* aFrame,
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nsIContent* aContent,
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nsEventStatus* aStatus,
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bool aIsHandlingNativeEvent = false,
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nsIContent** aTargetContent = nullptr) override;
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virtual nsIFrame* GetEventTargetFrame() override;
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virtual already_AddRefed<nsIContent> GetEventTargetContent(
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mozilla::WidgetEvent* aEvent) override;
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virtual void NotifyCounterStylesAreDirty() override;
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virtual void ReconstructFrames(void) override;
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virtual void Freeze() override;
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virtual void Thaw() override;
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virtual void FireOrClearDelayedEvents(bool aFireEvents) override;
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virtual nsresult RenderDocument(const nsRect& aRect, uint32_t aFlags,
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nscolor aBackgroundColor,
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gfxContext* aThebesContext) override;
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virtual already_AddRefed<SourceSurface>
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RenderNode(nsIDOMNode* aNode,
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nsIntRegion* aRegion,
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const mozilla::LayoutDeviceIntPoint aPoint,
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mozilla::LayoutDeviceIntRect* aScreenRect,
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uint32_t aFlags) override;
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virtual already_AddRefed<SourceSurface>
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RenderSelection(nsISelection* aSelection,
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const mozilla::LayoutDeviceIntPoint aPoint,
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mozilla::LayoutDeviceIntRect* aScreenRect,
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uint32_t aFlags) override;
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virtual already_AddRefed<nsPIDOMWindowOuter> GetRootWindow() override;
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virtual already_AddRefed<nsPIDOMWindowOuter> GetFocusedDOMWindowInOurWindow() override;
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virtual LayerManager* GetLayerManager() override;
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virtual bool AsyncPanZoomEnabled() override;
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virtual void SetIgnoreViewportScrolling(bool aIgnore) override;
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virtual nsresult SetResolution(float aResolution) override {
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return SetResolutionImpl(aResolution, /* aScaleToResolution = */ false);
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}
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virtual nsresult SetResolutionAndScaleTo(float aResolution) override {
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return SetResolutionImpl(aResolution, /* aScaleToResolution = */ true);
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}
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virtual bool ScaleToResolution() const override;
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virtual float GetCumulativeResolution() override;
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virtual float GetCumulativeNonRootScaleResolution() override;
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virtual void SetRestoreResolution(float aResolution,
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mozilla::LayoutDeviceIntSize aDisplaySize) override;
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//nsIViewObserver interface
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virtual void Paint(nsView* aViewToPaint, const nsRegion& aDirtyRegion,
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uint32_t aFlags) override;
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virtual nsresult HandleEvent(nsIFrame* aFrame,
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mozilla::WidgetGUIEvent* aEvent,
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bool aDontRetargetEvents,
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nsEventStatus* aEventStatus,
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nsIContent** aTargetContent = nullptr) override;
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virtual nsresult HandleDOMEventWithTarget(
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nsIContent* aTargetContent,
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mozilla::WidgetEvent* aEvent,
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nsEventStatus* aStatus) override;
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virtual nsresult HandleDOMEventWithTarget(nsIContent* aTargetContent,
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nsIDOMEvent* aEvent,
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nsEventStatus* aStatus) override;
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virtual bool ShouldIgnoreInvalidation() override;
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virtual void WillPaint() override;
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virtual void WillPaintWindow() override;
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virtual void DidPaintWindow() override;
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virtual void ScheduleViewManagerFlush(PaintType aType = PAINT_DEFAULT) override;
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virtual void DispatchSynthMouseMove(mozilla::WidgetGUIEvent* aEvent,
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bool aFlushOnHoverChange) override;
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virtual void ClearMouseCaptureOnView(nsView* aView) override;
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virtual bool IsVisible() override;
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virtual already_AddRefed<mozilla::AccessibleCaretEventHub> GetAccessibleCaretEventHub() const override;
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// caret handling
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virtual already_AddRefed<nsCaret> GetCaret() const override;
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NS_IMETHOD SetCaretEnabled(bool aInEnable) override;
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NS_IMETHOD SetCaretReadOnly(bool aReadOnly) override;
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NS_IMETHOD GetCaretEnabled(bool *aOutEnabled) override;
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NS_IMETHOD SetCaretVisibilityDuringSelection(bool aVisibility) override;
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NS_IMETHOD GetCaretVisible(bool *_retval) override;
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virtual void SetCaret(nsCaret *aNewCaret) override;
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virtual void RestoreCaret() override;
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NS_IMETHOD SetSelectionFlags(int16_t aInEnable) override;
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NS_IMETHOD GetSelectionFlags(int16_t *aOutEnable) override;
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// nsISelectionController
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NS_IMETHOD PhysicalMove(int16_t aDirection, int16_t aAmount, bool aExtend) override;
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NS_IMETHOD CharacterMove(bool aForward, bool aExtend) override;
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NS_IMETHOD CharacterExtendForDelete() override;
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NS_IMETHOD CharacterExtendForBackspace() override;
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NS_IMETHOD WordMove(bool aForward, bool aExtend) override;
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NS_IMETHOD WordExtendForDelete(bool aForward) override;
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NS_IMETHOD LineMove(bool aForward, bool aExtend) override;
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NS_IMETHOD IntraLineMove(bool aForward, bool aExtend) override;
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NS_IMETHOD PageMove(bool aForward, bool aExtend) override;
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NS_IMETHOD ScrollPage(bool aForward) override;
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NS_IMETHOD ScrollLine(bool aForward) override;
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NS_IMETHOD ScrollCharacter(bool aRight) override;
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NS_IMETHOD CompleteScroll(bool aForward) override;
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NS_IMETHOD CompleteMove(bool aForward, bool aExtend) override;
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NS_IMETHOD SelectAll() override;
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NS_IMETHOD CheckVisibility(nsIDOMNode *node, int16_t startOffset, int16_t EndOffset, bool *_retval) override;
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virtual nsresult CheckVisibilityContent(nsIContent* aNode, int16_t aStartOffset,
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int16_t aEndOffset, bool* aRetval) override;
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// nsIDocumentObserver
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NS_DECL_NSIDOCUMENTOBSERVER_BEGINUPDATE
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NS_DECL_NSIDOCUMENTOBSERVER_ENDUPDATE
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NS_DECL_NSIDOCUMENTOBSERVER_BEGINLOAD
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NS_DECL_NSIDOCUMENTOBSERVER_ENDLOAD
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NS_DECL_NSIDOCUMENTOBSERVER_CONTENTSTATECHANGED
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NS_DECL_NSIDOCUMENTOBSERVER_DOCUMENTSTATESCHANGED
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NS_DECL_NSIDOCUMENTOBSERVER_STYLESHEETADDED
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NS_DECL_NSIDOCUMENTOBSERVER_STYLESHEETREMOVED
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NS_DECL_NSIDOCUMENTOBSERVER_STYLESHEETAPPLICABLESTATECHANGED
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// nsIMutationObserver
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NS_DECL_NSIMUTATIONOBSERVER_CHARACTERDATACHANGED
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NS_DECL_NSIMUTATIONOBSERVER_ATTRIBUTEWILLCHANGE
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NS_DECL_NSIMUTATIONOBSERVER_ATTRIBUTECHANGED
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NS_DECL_NSIMUTATIONOBSERVER_CONTENTAPPENDED
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NS_DECL_NSIMUTATIONOBSERVER_CONTENTINSERTED
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NS_DECL_NSIMUTATIONOBSERVER_CONTENTREMOVED
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NS_DECL_NSIOBSERVER
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#ifdef MOZ_REFLOW_PERF
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virtual void DumpReflows() override;
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virtual void CountReflows(const char * aName, nsIFrame * aFrame) override;
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virtual void PaintCount(const char * aName,
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gfxContext* aRenderingContext,
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nsPresContext* aPresContext,
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nsIFrame * aFrame,
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const nsPoint& aOffset,
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uint32_t aColor) override;
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virtual void SetPaintFrameCount(bool aOn) override;
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virtual bool IsPaintingFrameCounts() override;
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#endif
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#ifdef DEBUG
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virtual void ListStyleContexts(FILE *out, int32_t aIndent = 0) override;
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virtual void ListStyleSheets(FILE *out, int32_t aIndent = 0) override;
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virtual void VerifyStyleTree() override;
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#endif
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static mozilla::LazyLogModule gLog;
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virtual void DisableNonTestMouseEvents(bool aDisable) override;
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virtual void UpdateCanvasBackground() override;
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virtual void AddCanvasBackgroundColorItem(nsDisplayListBuilder& aBuilder,
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nsDisplayList& aList,
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nsIFrame* aFrame,
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const nsRect& aBounds,
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nscolor aBackstopColor,
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uint32_t aFlags) override;
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virtual void AddPrintPreviewBackgroundItem(nsDisplayListBuilder& aBuilder,
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nsDisplayList& aList,
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nsIFrame* aFrame,
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const nsRect& aBounds) override;
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virtual nscolor ComputeBackstopColor(nsView* aDisplayRoot) override;
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virtual nsresult SetIsActive(bool aIsActive) override;
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virtual bool GetIsViewportOverridden() override {
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return (mMobileViewportManager != nullptr);
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}
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virtual bool IsLayoutFlushObserver() override
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{
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return GetPresContext()->RefreshDriver()->
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IsLayoutFlushObserver(this);
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}
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virtual void LoadComplete() override;
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virtual void AddSizeOfIncludingThis(nsWindowSizes& aWindowSizes)
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const override;
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size_t SizeOfTextRuns(mozilla::MallocSizeOf aMallocSizeOf) const;
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// This data is stored as a content property (nsGkAtoms::scrolling) on
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// mContentToScrollTo when we have a pending ScrollIntoView.
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struct ScrollIntoViewData {
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ScrollAxis mContentScrollVAxis;
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ScrollAxis mContentScrollHAxis;
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uint32_t mContentToScrollToFlags;
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};
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//////////////////////////////////////////////////////////////////////////////
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// Approximate frame visibility tracking public API.
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//////////////////////////////////////////////////////////////////////////////
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void ScheduleApproximateFrameVisibilityUpdateSoon() override;
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void ScheduleApproximateFrameVisibilityUpdateNow() override;
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void RebuildApproximateFrameVisibilityDisplayList(const nsDisplayList& aList) override;
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void RebuildApproximateFrameVisibility(nsRect* aRect = nullptr,
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bool aRemoveOnly = false) override;
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void EnsureFrameInApproximatelyVisibleList(nsIFrame* aFrame) override;
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void RemoveFrameFromApproximatelyVisibleList(nsIFrame* aFrame) override;
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bool AssumeAllFramesVisible() override;
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virtual void RecordShadowStyleChange(mozilla::dom::ShadowRoot* aShadowRoot) override;
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virtual bool CanDispatchEvent(
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const mozilla::WidgetGUIEvent* aEvent = nullptr) const override;
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void SetNextPaintCompressed() { mNextPaintCompressed = true; }
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void NotifyStyleSheetServiceSheetAdded(mozilla::StyleSheet* aSheet,
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uint32_t aSheetType) override;
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void NotifyStyleSheetServiceSheetRemoved(mozilla::StyleSheet* aSheet,
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uint32_t aSheetType) override;
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virtual bool HasHandledUserInput() const override {
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return mHasHandledUserInput;
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}
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virtual void FireResizeEvent() override;
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static PresShell* GetShellForEventTarget(nsIFrame* aFrame,
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nsIContent* aContent);
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static PresShell* GetShellForTouchEvent(WidgetGUIEvent* aEvent);
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protected:
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virtual ~PresShell();
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void HandlePostedReflowCallbacks(bool aInterruptible);
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void CancelPostedReflowCallbacks();
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void ScheduleBeforeFirstPaint();
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void UnsuppressAndInvalidate();
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void WillCauseReflow() {
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nsContentUtils::AddScriptBlocker();
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++mChangeNestCount;
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}
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nsresult DidCauseReflow();
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friend class ::nsAutoCauseReflowNotifier;
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friend class ::AutoPointerEventTargetUpdater;
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nsresult DispatchEventToDOM(mozilla::WidgetEvent* aEvent,
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nsEventStatus* aStatus,
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nsPresShellEventCB* aEventCB);
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void DispatchTouchEventToDOM(mozilla::WidgetEvent* aEvent,
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nsEventStatus* aStatus,
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nsPresShellEventCB* aEventCB,
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bool aTouchIsNew);
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void WillDoReflow();
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/**
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* Callback handler for whether reflow happened.
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*
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* @param aInterruptible Whether or not reflow interruption is allowed.
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*/
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void DidDoReflow(bool aInterruptible);
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// ProcessReflowCommands returns whether we processed all our dirty roots
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// without interruptions.
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bool ProcessReflowCommands(bool aInterruptible);
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// MaybeScheduleReflow checks if posting a reflow is needed, then checks if
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// the last reflow was interrupted. In the interrupted case ScheduleReflow is
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// called off a timer, otherwise it is called directly.
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void MaybeScheduleReflow();
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// Actually schedules a reflow. This should only be called by
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// MaybeScheduleReflow and the reflow timer ScheduleReflowOffTimer
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// sets up.
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void ScheduleReflow();
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// DoReflow returns whether the reflow finished without interruption
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bool DoReflow(nsIFrame* aFrame, bool aInterruptible);
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#ifdef DEBUG
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void DoVerifyReflow();
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void VerifyHasDirtyRootAncestor(nsIFrame* aFrame);
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#endif
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// Helper for ScrollContentIntoView
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void DoScrollContentIntoView();
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/**
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* Initialize cached font inflation preference values and do an initial
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* computation to determine if font inflation is enabled.
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*
|
|
* @see nsLayoutUtils::sFontSizeInflationEmPerLine
|
|
* @see nsLayoutUtils::sFontSizeInflationMinTwips
|
|
* @see nsLayoutUtils::sFontSizeInflationLineThreshold
|
|
*/
|
|
void SetupFontInflation();
|
|
|
|
struct RenderingState {
|
|
explicit RenderingState(PresShell* aPresShell)
|
|
: mResolution(aPresShell->mResolution)
|
|
, mRenderFlags(aPresShell->mRenderFlags)
|
|
{ }
|
|
Maybe<float> mResolution;
|
|
RenderFlags mRenderFlags;
|
|
};
|
|
|
|
struct AutoSaveRestoreRenderingState {
|
|
explicit AutoSaveRestoreRenderingState(PresShell* aPresShell)
|
|
: mPresShell(aPresShell)
|
|
, mOldState(aPresShell)
|
|
{}
|
|
|
|
~AutoSaveRestoreRenderingState()
|
|
{
|
|
mPresShell->mRenderFlags = mOldState.mRenderFlags;
|
|
mPresShell->mResolution = mOldState.mResolution;
|
|
}
|
|
|
|
PresShell* mPresShell;
|
|
RenderingState mOldState;
|
|
};
|
|
static RenderFlags ChangeFlag(RenderFlags aFlags, bool aOnOff,
|
|
eRenderFlag aFlag)
|
|
{
|
|
return aOnOff ? (aFlags | aFlag) : (aFlag & ~aFlag);
|
|
}
|
|
|
|
|
|
void SetRenderingState(const RenderingState& aState);
|
|
|
|
friend class ::nsPresShellEventCB;
|
|
|
|
bool mCaretEnabled;
|
|
|
|
#ifdef DEBUG
|
|
nsStyleSet* CloneStyleSet(nsStyleSet* aSet);
|
|
ServoStyleSet* CloneStyleSet(ServoStyleSet* aSet);
|
|
bool VerifyIncrementalReflow();
|
|
bool mInVerifyReflow;
|
|
void ShowEventTargetDebug();
|
|
#endif
|
|
|
|
void RecordStyleSheetChange(mozilla::StyleSheet* aStyleSheet,
|
|
StyleSheet::ChangeType);
|
|
|
|
void RemovePreferenceStyles();
|
|
|
|
// methods for painting a range to an offscreen buffer
|
|
|
|
// given a display list, clip the items within the list to
|
|
// the range
|
|
nsRect ClipListToRange(nsDisplayListBuilder *aBuilder,
|
|
nsDisplayList* aList,
|
|
nsRange* aRange);
|
|
|
|
// create a RangePaintInfo for the range aRange containing the
|
|
// display list needed to paint the range to a surface
|
|
mozilla::UniquePtr<RangePaintInfo>
|
|
CreateRangePaintInfo(nsIDOMRange* aRange,
|
|
nsRect& aSurfaceRect,
|
|
bool aForPrimarySelection);
|
|
|
|
/*
|
|
* Paint the items to a new surface and return it.
|
|
*
|
|
* aSelection - selection being painted, if any
|
|
* aRegion - clip region, if any
|
|
* aArea - area that the surface occupies, relative to the root frame
|
|
* aPoint - reference point, typically the mouse position
|
|
* aScreenRect - [out] set to the area of the screen the painted area should
|
|
* be displayed at
|
|
* aFlags - set RENDER_AUTO_SCALE to scale down large images, but it must not
|
|
* be set if a custom image was specified
|
|
*/
|
|
already_AddRefed<SourceSurface>
|
|
PaintRangePaintInfo(const nsTArray<mozilla::UniquePtr<RangePaintInfo>>& aItems,
|
|
nsISelection* aSelection,
|
|
nsIntRegion* aRegion,
|
|
nsRect aArea,
|
|
const mozilla::LayoutDeviceIntPoint aPoint,
|
|
mozilla::LayoutDeviceIntRect* aScreenRect,
|
|
uint32_t aFlags);
|
|
|
|
/**
|
|
* Methods to handle changes to user and UA sheet lists that we get
|
|
* notified about.
|
|
*/
|
|
void AddUserSheet(StyleSheet* aSheet);
|
|
void AddAgentSheet(StyleSheet* aSheet);
|
|
void AddAuthorSheet(StyleSheet* aSheet);
|
|
void RemoveSheet(mozilla::SheetType aType, StyleSheet* aSheet);
|
|
|
|
// Hide a view if it is a popup
|
|
void HideViewIfPopup(nsView* aView);
|
|
|
|
// Utility method to restore the root scrollframe state
|
|
void RestoreRootScrollPosition();
|
|
|
|
void MaybeReleaseCapturingContent();
|
|
|
|
nsresult HandleRetargetedEvent(mozilla::WidgetEvent* aEvent,
|
|
nsEventStatus* aStatus,
|
|
nsIContent* aTarget)
|
|
{
|
|
PushCurrentEventInfo(nullptr, nullptr);
|
|
mCurrentEventContent = aTarget;
|
|
nsresult rv = NS_OK;
|
|
if (GetCurrentEventFrame()) {
|
|
rv = HandleEventInternal(aEvent, aStatus, true);
|
|
}
|
|
PopCurrentEventInfo();
|
|
return rv;
|
|
}
|
|
|
|
class DelayedEvent
|
|
{
|
|
public:
|
|
virtual ~DelayedEvent() { }
|
|
virtual void Dispatch() { }
|
|
virtual bool IsKeyPressEvent() { return false; }
|
|
};
|
|
|
|
class DelayedInputEvent : public DelayedEvent
|
|
{
|
|
public:
|
|
virtual void Dispatch() override;
|
|
|
|
protected:
|
|
DelayedInputEvent();
|
|
virtual ~DelayedInputEvent();
|
|
|
|
mozilla::WidgetInputEvent* mEvent;
|
|
};
|
|
|
|
class DelayedMouseEvent : public DelayedInputEvent
|
|
{
|
|
public:
|
|
explicit DelayedMouseEvent(mozilla::WidgetMouseEvent* aEvent);
|
|
};
|
|
|
|
class DelayedKeyEvent : public DelayedInputEvent
|
|
{
|
|
public:
|
|
explicit DelayedKeyEvent(mozilla::WidgetKeyboardEvent* aEvent);
|
|
virtual bool IsKeyPressEvent() override;
|
|
};
|
|
|
|
// Check if aEvent is a mouse event and record the mouse location for later
|
|
// synth mouse moves.
|
|
void RecordMouseLocation(mozilla::WidgetGUIEvent* aEvent);
|
|
class nsSynthMouseMoveEvent final : public nsARefreshObserver {
|
|
public:
|
|
nsSynthMouseMoveEvent(PresShell* aPresShell, bool aFromScroll)
|
|
: mPresShell(aPresShell), mFromScroll(aFromScroll) {
|
|
NS_ASSERTION(mPresShell, "null parameter");
|
|
}
|
|
|
|
private:
|
|
// Private destructor, to discourage deletion outside of Release():
|
|
~nsSynthMouseMoveEvent() {
|
|
Revoke();
|
|
}
|
|
|
|
public:
|
|
NS_INLINE_DECL_REFCOUNTING(nsSynthMouseMoveEvent, override)
|
|
|
|
void Revoke() {
|
|
if (mPresShell) {
|
|
mPresShell->GetPresContext()->RefreshDriver()->
|
|
RemoveRefreshObserver(this, FlushType::Display);
|
|
mPresShell = nullptr;
|
|
}
|
|
}
|
|
virtual void WillRefresh(mozilla::TimeStamp aTime) override {
|
|
if (mPresShell) {
|
|
RefPtr<PresShell> shell = mPresShell;
|
|
shell->ProcessSynthMouseMoveEvent(mFromScroll);
|
|
}
|
|
}
|
|
private:
|
|
PresShell* mPresShell;
|
|
bool mFromScroll;
|
|
};
|
|
void ProcessSynthMouseMoveEvent(bool aFromScroll);
|
|
|
|
void QueryIsActive();
|
|
nsresult UpdateImageLockingState();
|
|
|
|
bool InZombieDocument(nsIContent *aContent);
|
|
already_AddRefed<nsIPresShell> GetParentPresShellForEventHandling();
|
|
nsIContent* GetCurrentEventContent();
|
|
nsIFrame* GetCurrentEventFrame();
|
|
nsresult RetargetEventToParent(mozilla::WidgetGUIEvent* aEvent,
|
|
nsEventStatus* aEventStatus);
|
|
void PushCurrentEventInfo(nsIFrame* aFrame, nsIContent* aContent);
|
|
void PopCurrentEventInfo();
|
|
/**
|
|
* @param aIsHandlingNativeEvent true when the caller (perhaps) handles
|
|
* an event which is caused by native
|
|
* event. Otherwise, false.
|
|
*/
|
|
nsresult HandleEventInternal(mozilla::WidgetEvent* aEvent,
|
|
nsEventStatus* aStatus,
|
|
bool aIsHandlingNativeEvent);
|
|
|
|
/*
|
|
* This and the next two helper methods are used to target and position the
|
|
* context menu when the keyboard shortcut is used to open it.
|
|
*
|
|
* If another menu is open, the context menu is opened relative to the
|
|
* active menuitem within the menu, or the menu itself if no item is active.
|
|
* Otherwise, if the caret is visible, the menu is opened near the caret.
|
|
* Otherwise, if a selectable list such as a listbox is focused, the
|
|
* current item within the menu is opened relative to this item.
|
|
* Otherwise, the context menu is opened at the topleft corner of the
|
|
* view.
|
|
*
|
|
* Returns true if the context menu event should fire and false if it should
|
|
* not.
|
|
*/
|
|
bool AdjustContextMenuKeyEvent(mozilla::WidgetMouseEvent* aEvent);
|
|
|
|
//
|
|
bool PrepareToUseCaretPosition(nsIWidget* aEventWidget,
|
|
mozilla::LayoutDeviceIntPoint& aTargetPt);
|
|
|
|
// Get the selected item and coordinates in device pixels relative to root
|
|
// document's root view for element, first ensuring the element is onscreen
|
|
void GetCurrentItemAndPositionForElement(nsIDOMElement *aCurrentEl,
|
|
nsIContent **aTargetToUse,
|
|
mozilla::LayoutDeviceIntPoint& aTargetPt,
|
|
nsIWidget *aRootWidget);
|
|
|
|
virtual void SynthesizeMouseMove(bool aFromScroll) override;
|
|
|
|
PresShell* GetRootPresShell();
|
|
|
|
nscolor GetDefaultBackgroundColorToDraw();
|
|
|
|
DOMHighResTimeStamp GetPerformanceNow();
|
|
|
|
// The callback for the mPaintSuppressionTimer timer.
|
|
static void sPaintSuppressionCallback(nsITimer* aTimer, void* aPresShell);
|
|
|
|
// The callback for the mReflowContinueTimer timer.
|
|
static void sReflowContinueCallback(nsITimer* aTimer, void* aPresShell);
|
|
bool ScheduleReflowOffTimer();
|
|
|
|
// Widget notificiations
|
|
virtual void WindowSizeMoveDone() override;
|
|
virtual void SysColorChanged() override { mPresContext->SysColorChanged(); }
|
|
virtual void ThemeChanged() override { mPresContext->ThemeChanged(); }
|
|
virtual void BackingScaleFactorChanged() override { mPresContext->UIResolutionChanged(); }
|
|
virtual nsIDocument* GetPrimaryContentDocument() override;
|
|
|
|
virtual void PausePainting() override;
|
|
virtual void ResumePainting() override;
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
// Approximate frame visibility tracking implementation.
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
|
|
void UpdateApproximateFrameVisibility();
|
|
void DoUpdateApproximateFrameVisibility(bool aRemoveOnly);
|
|
|
|
void ClearApproximatelyVisibleFramesList(const Maybe<mozilla::OnNonvisible>& aNonvisibleAction
|
|
= Nothing());
|
|
static void ClearApproximateFrameVisibilityVisited(nsView* aView, bool aClear);
|
|
static void MarkFramesInListApproximatelyVisible(const nsDisplayList& aList,
|
|
Maybe<VisibleRegions>& aVisibleRegions);
|
|
void MarkFramesInSubtreeApproximatelyVisible(nsIFrame* aFrame,
|
|
const nsRect& aRect,
|
|
Maybe<VisibleRegions>& aVisibleRegions,
|
|
bool aRemoveOnly = false);
|
|
|
|
void DecApproximateVisibleCount(VisibleFrames& aFrames,
|
|
const Maybe<OnNonvisible>& aNonvisibleAction = Nothing());
|
|
|
|
nsRevocableEventPtr<nsRunnableMethod<PresShell>> mUpdateApproximateFrameVisibilityEvent;
|
|
|
|
// A set of frames that were visible or could be visible soon at the time
|
|
// that we last did an approximate frame visibility update.
|
|
VisibleFrames mApproximatelyVisibleFrames;
|
|
|
|
nsresult SetResolutionImpl(float aResolution, bool aScaleToResolution);
|
|
|
|
#ifdef DEBUG
|
|
// The reflow root under which we're currently reflowing. Null when
|
|
// not in reflow.
|
|
nsIFrame* mCurrentReflowRoot;
|
|
uint32_t mUpdateCount;
|
|
#endif
|
|
|
|
#ifdef MOZ_REFLOW_PERF
|
|
ReflowCountMgr* mReflowCountMgr;
|
|
#endif
|
|
|
|
// This is used for synthetic mouse events that are sent when what is under
|
|
// the mouse pointer may have changed without the mouse moving (eg scrolling,
|
|
// change to the document contents).
|
|
// It is set only on a presshell for a root document, this value represents
|
|
// the last observed location of the mouse relative to that root document. It
|
|
// is set to (NS_UNCONSTRAINEDSIZE, NS_UNCONSTRAINEDSIZE) if the mouse isn't
|
|
// over our window or there is no last observed mouse location for some
|
|
// reason.
|
|
nsPoint mMouseLocation;
|
|
// This is an APZ state variable that tracks the target guid for the last
|
|
// mouse event that was processed (corresponding to mMouseLocation). This is
|
|
// needed for the synthetic mouse events.
|
|
mozilla::layers::ScrollableLayerGuid mMouseEventTargetGuid;
|
|
|
|
// mStyleSet owns it but we maintain a ref, may be null
|
|
RefPtr<mozilla::StyleSheet> mPrefStyleSheet;
|
|
|
|
// Set of frames that we should mark with NS_FRAME_HAS_DIRTY_CHILDREN after
|
|
// we finish reflowing mCurrentReflowRoot.
|
|
nsTHashtable<nsPtrHashKey<nsIFrame> > mFramesToDirty;
|
|
|
|
// Reflow roots that need to be reflowed.
|
|
nsTArray<nsIFrame*> mDirtyRoots;
|
|
|
|
nsTArray<nsAutoPtr<DelayedEvent> > mDelayedEvents;
|
|
private:
|
|
nsIFrame* mCurrentEventFrame;
|
|
nsCOMPtr<nsIContent> mCurrentEventContent;
|
|
nsTArray<nsIFrame*> mCurrentEventFrameStack;
|
|
nsCOMArray<nsIContent> mCurrentEventContentStack;
|
|
protected:
|
|
nsRevocableEventPtr<nsSynthMouseMoveEvent> mSynthMouseMoveEvent;
|
|
nsCOMPtr<nsIContent> mLastAnchorScrolledTo;
|
|
RefPtr<nsCaret> mCaret;
|
|
RefPtr<nsCaret> mOriginalCaret;
|
|
nsCallbackEventRequest* mFirstCallbackEventRequest;
|
|
nsCallbackEventRequest* mLastCallbackEventRequest;
|
|
|
|
mozilla::TouchManager mTouchManager;
|
|
|
|
RefPtr<ZoomConstraintsClient> mZoomConstraintsClient;
|
|
RefPtr<MobileViewportManager> mMobileViewportManager;
|
|
|
|
RefPtr<mozilla::AccessibleCaretEventHub> mAccessibleCaretEventHub;
|
|
|
|
// This timer controls painting suppression. Until it fires
|
|
// or all frames are constructed, we won't paint anything but
|
|
// our <body> background and scrollbars.
|
|
nsCOMPtr<nsITimer> mPaintSuppressionTimer;
|
|
|
|
nsCOMPtr<nsITimer> mDelayedPaintTimer;
|
|
|
|
// The `performance.now()` value when we last started to process reflows.
|
|
DOMHighResTimeStamp mLastReflowStart;
|
|
|
|
mozilla::TimeStamp mLoadBegin; // used to time loads
|
|
|
|
// Information needed to properly handle scrolling content into view if the
|
|
// pre-scroll reflow flush can be interrupted. mContentToScrollTo is
|
|
// non-null between the initial scroll attempt and the first time we finish
|
|
// processing all our dirty roots. mContentToScrollTo has a content property
|
|
// storing the details for the scroll operation, see ScrollIntoViewData above.
|
|
nsCOMPtr<nsIContent> mContentToScrollTo;
|
|
|
|
nscoord mLastAnchorScrollPositionY;
|
|
|
|
// Information about live content (which still stay in DOM tree).
|
|
// Used in case we need re-dispatch event after sending pointer event,
|
|
// when target of pointer event was deleted during executing user handlers.
|
|
nsCOMPtr<nsIContent> mPointerEventTarget;
|
|
|
|
// The focus sequence number of the last processed input event
|
|
uint64_t mAPZFocusSequenceNumber;
|
|
// The focus information needed for async keyboard scrolling
|
|
FocusTarget mAPZFocusTarget;
|
|
|
|
bool mDocumentLoading : 1;
|
|
bool mIgnoreFrameDestruction : 1;
|
|
bool mHaveShutDown : 1;
|
|
bool mLastRootReflowHadUnconstrainedBSize : 1;
|
|
bool mNoDelayedMouseEvents : 1;
|
|
bool mNoDelayedKeyEvents : 1;
|
|
|
|
// Indicates that it is safe to unlock painting once all pending reflows
|
|
// have been processed.
|
|
bool mShouldUnsuppressPainting : 1;
|
|
|
|
bool mResizeEventPending : 1;
|
|
|
|
bool mApproximateFrameVisibilityVisited : 1;
|
|
|
|
bool mNextPaintCompressed : 1;
|
|
|
|
bool mHasCSSBackgroundColor : 1;
|
|
|
|
// Whether content should be scaled by the resolution amount. If this is
|
|
// not set, a transform that scales by the inverse of the resolution is
|
|
// applied to rendered layers.
|
|
bool mScaleToResolution : 1;
|
|
|
|
// Whether the last chrome-only escape key event is consumed.
|
|
bool mIsLastChromeOnlyEscapeKeyConsumed : 1;
|
|
|
|
// Whether the widget has received a paint message yet.
|
|
bool mHasReceivedPaintMessage : 1;
|
|
|
|
bool mIsLastKeyDownCanceled : 1;
|
|
|
|
// Whether we have ever handled a user input event
|
|
bool mHasHandledUserInput : 1;
|
|
|
|
static bool sDisableNonTestMouseEvents;
|
|
|
|
mozilla::TimeStamp mLastOSWake;
|
|
|
|
static mozilla::TimeStamp sLastInputCreated;
|
|
static mozilla::TimeStamp sLastInputProcessed;
|
|
|
|
static bool sProcessInteractable;
|
|
};
|
|
|
|
} // namespace mozilla
|
|
|
|
#endif // mozilla_PresShell_h
|