зеркало из https://github.com/mozilla/gecko-dev.git
8687 строки
318 KiB
C++
8687 строки
318 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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*/
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/*
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* structures that represent things to be painted (ordered in z-order),
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* used during painting and hit testing
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*/
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#include "nsDisplayList.h"
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#include <stdint.h>
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#include <algorithm>
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#include <limits>
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#include "gfxContext.h"
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#include "gfxUtils.h"
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#include "mozilla/DisplayPortUtils.h"
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#include "mozilla/Likely.h"
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#include "mozilla/dom/BrowserChild.h"
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#include "mozilla/dom/HTMLCanvasElement.h"
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#include "mozilla/dom/RemoteBrowser.h"
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#include "mozilla/dom/Selection.h"
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#include "mozilla/dom/ServiceWorkerRegistrar.h"
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#include "mozilla/dom/ServiceWorkerRegistration.h"
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#include "mozilla/dom/SVGElement.h"
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#include "mozilla/dom/TouchEvent.h"
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#include "mozilla/dom/PerformanceMainThread.h"
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#include "mozilla/gfx/2D.h"
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#include "mozilla/PresShell.h"
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#include "mozilla/ScrollContainerFrame.h"
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#include "mozilla/ShapeUtils.h"
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#include "mozilla/StaticPrefs_apz.h"
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#include "mozilla/StaticPrefs_gfx.h"
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#include "mozilla/StaticPrefs_layers.h"
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#include "mozilla/StaticPrefs_layout.h"
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#include "mozilla/StaticPrefs_print.h"
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#include "mozilla/SVGIntegrationUtils.h"
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#include "mozilla/SVGUtils.h"
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#include "mozilla/ViewportUtils.h"
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#include "nsCSSRendering.h"
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#include "nsCSSRenderingGradients.h"
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#include "nsCaseTreatment.h"
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#include "nsRefreshDriver.h"
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#include "nsRegion.h"
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#include "nsStyleStructInlines.h"
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#include "nsStyleTransformMatrix.h"
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#include "nsTransitionManager.h"
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#include "gfxMatrix.h"
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#include "nsLayoutUtils.h"
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#include "nsIFrameInlines.h"
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#include "nsStyleConsts.h"
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#include "BorderConsts.h"
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#include "mozilla/MathAlgorithms.h"
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#include "imgIContainer.h"
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#include "nsImageFrame.h"
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#include "nsSubDocumentFrame.h"
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#include "nsViewManager.h"
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#include "ImageContainer.h"
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#include "nsCanvasFrame.h"
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#include "nsSubDocumentFrame.h"
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#include "StickyScrollContainer.h"
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#include "mozilla/AnimationPerformanceWarning.h"
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#include "mozilla/AnimationUtils.h"
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#include "mozilla/AutoRestore.h"
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#include "mozilla/EffectCompositor.h"
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#include "mozilla/EffectSet.h"
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#include "mozilla/glean/GleanMetrics.h"
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#include "mozilla/HashTable.h"
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#include "mozilla/LookAndFeel.h"
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#include "mozilla/OperatorNewExtensions.h"
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#include "mozilla/Preferences.h"
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#include "mozilla/ProfilerLabels.h"
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#include "mozilla/ProfilerMarkers.h"
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#include "mozilla/StyleAnimationValue.h"
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#include "mozilla/ServoBindings.h"
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#include "mozilla/SVGClipPathFrame.h"
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#include "mozilla/SVGMaskFrame.h"
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#include "mozilla/SVGObserverUtils.h"
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#include "mozilla/Telemetry.h"
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#include "mozilla/UniquePtr.h"
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#include "mozilla/Unused.h"
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#include "mozilla/ViewportFrame.h"
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#include "mozilla/gfx/gfxVars.h"
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#include "ActiveLayerTracker.h"
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#include "nsEscape.h"
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#include "nsPrintfCString.h"
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#include "UnitTransforms.h"
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#include "LayerAnimationInfo.h"
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#include "mozilla/EventStateManager.h"
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#include "nsCaret.h"
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#include "nsDOMTokenList.h"
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#include "nsCSSProps.h"
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#include "nsTableCellFrame.h"
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#include "nsTableColFrame.h"
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#include "nsTextFrame.h"
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#include "nsTextPaintStyle.h"
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#include "nsSliderFrame.h"
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#include "nsFocusManager.h"
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#include "TextDrawTarget.h"
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#include "mozilla/layers/AnimationHelper.h"
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#include "mozilla/layers/CompositorThread.h"
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#include "mozilla/layers/InputAPZContext.h"
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#include "mozilla/layers/RenderRootStateManager.h"
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#include "mozilla/layers/StackingContextHelper.h"
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#include "mozilla/layers/TreeTraversal.h"
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#include "mozilla/layers/WebRenderBridgeChild.h"
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#include "mozilla/layers/WebRenderLayerManager.h"
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#include "mozilla/layers/WebRenderMessages.h"
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#include "mozilla/layers/WebRenderScrollData.h"
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namespace mozilla {
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using namespace dom;
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using namespace gfx;
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using namespace layout;
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using namespace layers;
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using namespace image;
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LazyLogModule sContentDisplayListLog("dl.content");
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LazyLogModule sParentDisplayListLog("dl.parent");
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LazyLogModule& GetLoggerByProcess() {
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return XRE_IsContentProcess() ? sContentDisplayListLog
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: sParentDisplayListLog;
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}
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#ifdef MOZ_DIAGNOSTIC_ASSERT_ENABLED
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void AssertUniqueItem(nsDisplayItem* aItem) {
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for (nsDisplayItem* i : aItem->Frame()->DisplayItems()) {
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if (i != aItem && !i->HasDeletedFrame() && i->Frame() == aItem->Frame() &&
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i->GetPerFrameKey() == aItem->GetPerFrameKey()) {
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if (i->IsPreProcessedItem() || i->IsPreProcessed()) {
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continue;
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}
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MOZ_DIAGNOSTIC_ASSERT(false, "Duplicate display item!");
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}
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}
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}
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#endif
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bool ShouldBuildItemForEvents(const DisplayItemType aType) {
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return aType == DisplayItemType::TYPE_COMPOSITOR_HITTEST_INFO ||
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(GetDisplayItemFlagsForType(aType) & TYPE_IS_CONTAINER);
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}
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static bool ItemTypeSupportsHitTesting(const DisplayItemType aType) {
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switch (aType) {
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case DisplayItemType::TYPE_BACKGROUND:
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case DisplayItemType::TYPE_BACKGROUND_COLOR:
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case DisplayItemType::TYPE_THEMED_BACKGROUND:
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return true;
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default:
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return false;
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}
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}
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void InitializeHitTestInfo(nsDisplayListBuilder* aBuilder,
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nsPaintedDisplayItem* aItem,
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const DisplayItemType aType) {
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if (ItemTypeSupportsHitTesting(aType)) {
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aItem->InitializeHitTestInfo(aBuilder);
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}
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}
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/* static */
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already_AddRefed<ActiveScrolledRoot> ActiveScrolledRoot::CreateASRForFrame(
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const ActiveScrolledRoot* aParent,
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ScrollContainerFrame* aScrollContainerFrame, bool aIsRetained) {
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RefPtr<ActiveScrolledRoot> asr;
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if (aIsRetained) {
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asr = aScrollContainerFrame->GetProperty(ActiveScrolledRootCache());
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}
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if (!asr) {
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asr = new ActiveScrolledRoot();
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if (aIsRetained) {
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RefPtr<ActiveScrolledRoot> ref = asr;
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aScrollContainerFrame->SetProperty(ActiveScrolledRootCache(),
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ref.forget().take());
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}
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}
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asr->mParent = aParent;
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asr->mScrollContainerFrame = aScrollContainerFrame;
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asr->mDepth = aParent ? aParent->mDepth + 1 : 1;
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asr->mRetained = aIsRetained;
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return asr.forget();
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}
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/* static */
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bool ActiveScrolledRoot::IsAncestor(const ActiveScrolledRoot* aAncestor,
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const ActiveScrolledRoot* aDescendant) {
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if (!aAncestor) {
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// nullptr is the root
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return true;
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}
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if (Depth(aAncestor) > Depth(aDescendant)) {
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return false;
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}
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const ActiveScrolledRoot* asr = aDescendant;
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while (asr) {
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if (asr == aAncestor) {
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return true;
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}
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asr = asr->mParent;
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}
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return false;
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}
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/* static */
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bool ActiveScrolledRoot::IsProperAncestor(
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const ActiveScrolledRoot* aAncestor,
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const ActiveScrolledRoot* aDescendant) {
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return aAncestor != aDescendant && IsAncestor(aAncestor, aDescendant);
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}
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/* static */
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nsCString ActiveScrolledRoot::ToString(
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const ActiveScrolledRoot* aActiveScrolledRoot) {
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nsAutoCString str;
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for (const auto* asr = aActiveScrolledRoot; asr; asr = asr->mParent) {
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str.AppendPrintf("<0x%p>", asr->mScrollContainerFrame);
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if (asr->mParent) {
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str.AppendLiteral(", ");
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}
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}
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return std::move(str);
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}
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ScrollableLayerGuid::ViewID ActiveScrolledRoot::ComputeViewId() const {
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nsIContent* content = mScrollContainerFrame->GetScrolledFrame()->GetContent();
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return nsLayoutUtils::FindOrCreateIDFor(content);
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}
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ActiveScrolledRoot::~ActiveScrolledRoot() {
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if (mScrollContainerFrame && mRetained) {
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mScrollContainerFrame->RemoveProperty(ActiveScrolledRootCache());
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}
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}
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static uint64_t AddAnimationsForWebRender(
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nsDisplayItem* aItem, RenderRootStateManager* aManager,
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nsDisplayListBuilder* aDisplayListBuilder,
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const Maybe<LayoutDevicePoint>& aPosition = Nothing()) {
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auto* effects = EffectSet::GetForFrame(aItem->Frame(), aItem->GetType());
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if (!effects || effects->IsEmpty()) {
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// If there is no animation on the nsIFrame, that means
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// 1) we've never created any animations on this frame or
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// 2) the frame was reconstruced or
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// 3) all animations on the frame have finished
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// in such cases we don't need do anything here.
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//
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// Even if there is a WebRenderAnimationData for the display item type on
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// this frame, it's going to be discarded since it's not marked as being
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// used.
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return 0;
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}
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RefPtr<WebRenderAnimationData> animationData =
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aManager->CommandBuilder()
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.CreateOrRecycleWebRenderUserData<WebRenderAnimationData>(aItem);
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AnimationInfo& animationInfo = animationData->GetAnimationInfo();
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nsIFrame* frame = aItem->Frame();
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animationInfo.AddAnimationsForDisplayItem(
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frame, aDisplayListBuilder, aItem, aItem->GetType(),
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aManager->LayerManager(), aPosition);
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// Note that animationsId can be 0 (uninitialized in AnimationInfo) if there
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// are no active animations.
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uint64_t animationsId = animationInfo.GetCompositorAnimationsId();
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if (!animationInfo.GetAnimations().IsEmpty()) {
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OpAddCompositorAnimations anim(
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CompositorAnimations(animationInfo.GetAnimations(), animationsId));
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aManager->WrBridge()->AddWebRenderParentCommand(anim);
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aManager->AddActiveCompositorAnimationId(animationsId);
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} else if (animationsId) {
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aManager->AddCompositorAnimationsIdForDiscard(animationsId);
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animationsId = 0;
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}
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return animationsId;
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}
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static bool GenerateAndPushTextMask(nsIFrame* aFrame, gfxContext* aContext,
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const nsRect& aFillRect,
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nsDisplayListBuilder* aBuilder) {
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if (aBuilder->IsForGenerateGlyphMask()) {
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return false;
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}
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SVGObserverUtils::GetAndObserveBackgroundClip(aFrame);
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// The main function of enabling background-clip:text property value.
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// When a nsDisplayBackgroundImage detects "text" bg-clip style, it will call
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// this function to
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// 1. Generate a mask by all descendant text frames
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// 2. Push the generated mask into aContext.
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gfxContext* sourceCtx = aContext;
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LayoutDeviceRect bounds = LayoutDeviceRect::FromAppUnits(
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aFillRect, aFrame->PresContext()->AppUnitsPerDevPixel());
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// Create a mask surface.
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RefPtr<DrawTarget> sourceTarget = sourceCtx->GetDrawTarget();
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RefPtr<DrawTarget> maskDT = sourceTarget->CreateClippedDrawTarget(
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bounds.ToUnknownRect(), SurfaceFormat::A8);
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if (!maskDT || !maskDT->IsValid()) {
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return false;
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}
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gfxContext maskCtx(maskDT, /* aPreserveTransform */ true);
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maskCtx.Multiply(Matrix::Translation(bounds.TopLeft().ToUnknownPoint()));
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// Shade text shape into mask A8 surface.
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nsLayoutUtils::PaintFrame(
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&maskCtx, aFrame, nsRect(nsPoint(0, 0), aFrame->GetSize()),
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NS_RGB(255, 255, 255), nsDisplayListBuilderMode::GenerateGlyph);
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// Push the generated mask into aContext, so that the caller can pop and
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// blend with it.
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Matrix currentMatrix = sourceCtx->CurrentMatrix();
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Matrix invCurrentMatrix = currentMatrix;
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invCurrentMatrix.Invert();
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RefPtr<SourceSurface> maskSurface = maskDT->Snapshot();
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sourceCtx->PushGroupForBlendBack(gfxContentType::COLOR_ALPHA, 1.0,
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maskSurface, invCurrentMatrix);
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return true;
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}
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nsDisplayWrapper* nsDisplayWrapList::CreateShallowCopy(
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nsDisplayListBuilder* aBuilder) {
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const nsDisplayWrapList* wrappedItem = AsDisplayWrapList();
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MOZ_ASSERT(wrappedItem);
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// Create a new nsDisplayWrapList using a copy-constructor. This is done
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// to preserve the information about bounds.
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nsDisplayWrapper* wrapper =
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new (aBuilder) nsDisplayWrapper(aBuilder, *wrappedItem);
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wrapper->SetType(nsDisplayWrapper::ItemType());
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MOZ_ASSERT(wrapper);
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// Set the display list pointer of the new wrapper item to the display list
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// of the wrapped item.
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wrapper->mListPtr = wrappedItem->mListPtr;
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return wrapper;
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}
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nsDisplayWrapList* nsDisplayListBuilder::MergeItems(
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nsTArray<nsDisplayItem*>& aItems) {
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// For merging, we create a temporary item by cloning the last item of the
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// mergeable items list. This ensures that the temporary item will have the
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// correct frame and bounds.
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nsDisplayWrapList* last = aItems.PopLastElement()->AsDisplayWrapList();
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MOZ_ASSERT(last);
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nsDisplayWrapList* merged = last->Clone(this);
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MOZ_ASSERT(merged);
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AddTemporaryItem(merged);
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// Create nsDisplayWrappers that point to the internal display lists of the
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// items we are merging. These nsDisplayWrappers are added to the display list
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// of the temporary item.
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for (nsDisplayItem* item : aItems) {
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MOZ_ASSERT(item);
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MOZ_ASSERT(merged->CanMerge(item));
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merged->Merge(item);
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MOZ_ASSERT(item->AsDisplayWrapList());
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merged->GetChildren()->AppendToTop(
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static_cast<nsDisplayWrapList*>(item)->CreateShallowCopy(this));
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}
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merged->GetChildren()->AppendToTop(last->CreateShallowCopy(this));
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return merged;
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}
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// FIXME(emilio): This whole business should ideally not be needed at all, but
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// there are a variety of hard-to-deal-with caret invalidation issues, like
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// bug 1888583, and caret changes are relatively uncommon, enough that it
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// probably isn't worth chasing all them down.
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void nsDisplayListBuilder::InvalidateCaretFramesIfNeeded() {
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if (mPaintedCarets.IsEmpty()) {
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return;
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}
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size_t i = mPaintedCarets.Length();
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while (i--) {
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nsCaret* caret = mPaintedCarets[i];
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nsIFrame* oldCaret = caret->GetLastPaintedFrame();
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nsRect caretRect;
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nsIFrame* currentCaret = caret->GetPaintGeometry(&caretRect);
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if (oldCaret == currentCaret) {
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// Keep tracking this caret, it hasn't changed.
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continue;
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}
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if (oldCaret) {
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oldCaret->MarkNeedsDisplayItemRebuild();
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}
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if (currentCaret) {
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currentCaret->MarkNeedsDisplayItemRebuild();
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}
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// If / when we paint this caret, we'll track it again.
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caret->SetLastPaintedFrame(nullptr);
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mPaintedCarets.RemoveElementAt(i);
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}
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}
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void nsDisplayListBuilder::AutoCurrentActiveScrolledRootSetter::
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SetCurrentActiveScrolledRoot(
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const ActiveScrolledRoot* aActiveScrolledRoot) {
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MOZ_ASSERT(!mUsed);
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// Set the builder's mCurrentActiveScrolledRoot.
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mBuilder->mCurrentActiveScrolledRoot = aActiveScrolledRoot;
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// We also need to adjust the builder's mCurrentContainerASR.
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// mCurrentContainerASR needs to be an ASR that all the container's
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// contents have finite bounds with respect to. If aActiveScrolledRoot
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// is an ancestor ASR of mCurrentContainerASR, that means we need to
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// set mCurrentContainerASR to aActiveScrolledRoot, because otherwise
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// the items that will be created with aActiveScrolledRoot wouldn't
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// have finite bounds with respect to mCurrentContainerASR. There's one
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// exception, in the case where there's a content clip on the builder
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// that is scrolled by a descendant ASR of aActiveScrolledRoot. This
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// content clip will clip all items that are created while this
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// AutoCurrentActiveScrolledRootSetter exists. This means that the items
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// created during our lifetime will have finite bounds with respect to
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// the content clip's ASR, even if the items' actual ASR is an ancestor
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// of that. And it also means that mCurrentContainerASR only needs to be
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// set to the content clip's ASR and not all the way to aActiveScrolledRoot.
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// This case is tested by fixed-pos-scrolled-clip-opacity-layerize.html
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// and fixed-pos-scrolled-clip-opacity-inside-layerize.html.
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// finiteBoundsASR is the leafmost ASR that all items created during
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// object's lifetime have finite bounds with respect to.
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const ActiveScrolledRoot* finiteBoundsASR =
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ActiveScrolledRoot::PickDescendant(mContentClipASR, aActiveScrolledRoot);
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// mCurrentContainerASR is adjusted so that it's still an ancestor of
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// finiteBoundsASR.
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mBuilder->mCurrentContainerASR = ActiveScrolledRoot::PickAncestor(
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mBuilder->mCurrentContainerASR, finiteBoundsASR);
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// If we are entering out-of-flow content inside a CSS filter, mark
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// scroll frames wrt. which the content is fixed as containing such content.
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if (mBuilder->mFilterASR && ActiveScrolledRoot::IsAncestor(
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aActiveScrolledRoot, mBuilder->mFilterASR)) {
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for (const ActiveScrolledRoot* asr = mBuilder->mFilterASR;
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asr && asr != aActiveScrolledRoot; asr = asr->mParent) {
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asr->mScrollContainerFrame->SetHasOutOfFlowContentInsideFilter();
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}
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}
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mUsed = true;
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}
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void nsDisplayListBuilder::AutoCurrentActiveScrolledRootSetter::
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InsertScrollFrame(ScrollContainerFrame* aScrollContainerFrame) {
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MOZ_ASSERT(!mUsed);
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size_t descendantsEndIndex = mBuilder->mActiveScrolledRoots.Length();
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const ActiveScrolledRoot* parentASR = mBuilder->mCurrentActiveScrolledRoot;
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const ActiveScrolledRoot* asr =
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mBuilder->AllocateActiveScrolledRoot(parentASR, aScrollContainerFrame);
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mBuilder->mCurrentActiveScrolledRoot = asr;
|
|
|
|
// All child ASRs of parentASR that were created while this
|
|
// AutoCurrentActiveScrolledRootSetter object was on the stack belong to us
|
|
// now. Reparent them to asr.
|
|
for (size_t i = mDescendantsStartIndex; i < descendantsEndIndex; i++) {
|
|
ActiveScrolledRoot* descendantASR = mBuilder->mActiveScrolledRoots[i];
|
|
if (ActiveScrolledRoot::IsAncestor(parentASR, descendantASR)) {
|
|
descendantASR->IncrementDepth();
|
|
if (descendantASR->mParent == parentASR) {
|
|
descendantASR->mParent = asr;
|
|
}
|
|
}
|
|
}
|
|
|
|
mUsed = true;
|
|
}
|
|
|
|
nsDisplayListBuilder::AutoContainerASRTracker::AutoContainerASRTracker(
|
|
nsDisplayListBuilder* aBuilder)
|
|
: mBuilder(aBuilder), mSavedContainerASR(aBuilder->mCurrentContainerASR) {
|
|
mBuilder->mCurrentContainerASR = mBuilder->mCurrentActiveScrolledRoot;
|
|
}
|
|
|
|
nsPresContext* nsDisplayListBuilder::CurrentPresContext() {
|
|
return CurrentPresShellState()->mPresShell->GetPresContext();
|
|
}
|
|
|
|
/* static */
|
|
nsRect nsDisplayListBuilder::OutOfFlowDisplayData::ComputeVisibleRectForFrame(
|
|
nsDisplayListBuilder* aBuilder, nsIFrame* aFrame,
|
|
const nsRect& aVisibleRect, const nsRect& aDirtyRect,
|
|
nsRect* aOutDirtyRect) {
|
|
nsRect visible = aVisibleRect;
|
|
nsRect dirtyRectRelativeToDirtyFrame = aDirtyRect;
|
|
|
|
bool inPartialUpdate =
|
|
aBuilder->IsRetainingDisplayList() && aBuilder->IsPartialUpdate();
|
|
if (StaticPrefs::apz_allow_zooming() &&
|
|
DisplayPortUtils::IsFixedPosFrameInDisplayPort(aFrame) &&
|
|
aBuilder->IsPaintingToWindow() && !inPartialUpdate) {
|
|
dirtyRectRelativeToDirtyFrame =
|
|
nsRect(nsPoint(0, 0), aFrame->GetParent()->GetSize());
|
|
|
|
// If there's a visual viewport size set, restrict the amount of the
|
|
// fixed-position element we paint to the visual viewport. (In general
|
|
// the fixed-position element can be as large as the layout viewport,
|
|
// which at a high zoom level can cause us to paint too large of an
|
|
// area.)
|
|
PresShell* presShell = aFrame->PresShell();
|
|
if (presShell->IsVisualViewportSizeSet()) {
|
|
dirtyRectRelativeToDirtyFrame =
|
|
nsRect(presShell->GetVisualViewportOffsetRelativeToLayoutViewport(),
|
|
presShell->GetVisualViewportSize());
|
|
// But if we have a displayport, expand it to the displayport, so
|
|
// that async-scrolling the visual viewport within the layout viewport
|
|
// will not checkerboard.
|
|
if (nsIFrame* rootScrollContainerFrame =
|
|
presShell->GetRootScrollContainerFrame()) {
|
|
nsRect displayport;
|
|
// Note that the displayport here is already in the right coordinate
|
|
// space: it's relative to the scroll port (= layout viewport), but
|
|
// covers the visual viewport with some margins around it, which is
|
|
// exactly what we want.
|
|
if (DisplayPortUtils::GetDisplayPort(
|
|
rootScrollContainerFrame->GetContent(), &displayport,
|
|
DisplayPortOptions().With(ContentGeometryType::Fixed))) {
|
|
dirtyRectRelativeToDirtyFrame = displayport;
|
|
}
|
|
}
|
|
}
|
|
visible = dirtyRectRelativeToDirtyFrame;
|
|
if (StaticPrefs::apz_test_logging_enabled() &&
|
|
presShell->GetDocument()->IsContentDocument()) {
|
|
nsLayoutUtils::LogAdditionalTestData(
|
|
aBuilder, "fixedPosDisplayport",
|
|
ToString(CSSSize::FromAppUnits(visible)));
|
|
}
|
|
}
|
|
|
|
*aOutDirtyRect = dirtyRectRelativeToDirtyFrame - aFrame->GetPosition();
|
|
visible -= aFrame->GetPosition();
|
|
|
|
nsRect overflowRect = aFrame->InkOverflowRect();
|
|
|
|
if (aFrame->IsTransformed() && EffectCompositor::HasAnimationsForCompositor(
|
|
aFrame, DisplayItemType::TYPE_TRANSFORM)) {
|
|
/**
|
|
* Add a fuzz factor to the overflow rectangle so that elements only
|
|
* just out of view are pulled into the display list, so they can be
|
|
* prerendered if necessary.
|
|
*/
|
|
overflowRect.Inflate(nsPresContext::CSSPixelsToAppUnits(32));
|
|
}
|
|
|
|
visible.IntersectRect(visible, overflowRect);
|
|
aOutDirtyRect->IntersectRect(*aOutDirtyRect, overflowRect);
|
|
|
|
return visible;
|
|
}
|
|
|
|
nsDisplayListBuilder::Linkifier::Linkifier(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame,
|
|
nsDisplayList* aList)
|
|
: mList(aList) {
|
|
// Find the element that we need to check for link-ness, bailing out if
|
|
// we can't find one.
|
|
Element* elem = Element::FromNodeOrNull(aFrame->GetContent());
|
|
if (!elem) {
|
|
return;
|
|
}
|
|
|
|
// If the element has an id and/or name attribute, generate a destination
|
|
// for possible internal linking.
|
|
auto maybeGenerateDest = [&](const nsAtom* aAttr) {
|
|
nsAutoString attrValue;
|
|
elem->GetAttr(aAttr, attrValue);
|
|
if (!attrValue.IsEmpty()) {
|
|
NS_ConvertUTF16toUTF8 dest(attrValue);
|
|
// Ensure that we only emit a given destination once, although there may
|
|
// be multiple frames associated with a given element; we'll simply use
|
|
// the first of them as the target of any links to it.
|
|
// XXX(jfkthame) This prevents emitting duplicate destinations *on the
|
|
// same page*, but does not prevent duplicates on subsequent pages, as
|
|
// each new page is handled by a new temporary DisplayListBuilder. This
|
|
// seems to be harmless in practice, though a bit wasteful of space. To
|
|
// fix, we need to maintain the set of already-seen destinations globally
|
|
// for the print job, rather than attached to the (per-page) builder.
|
|
if (aBuilder->mDestinations.EnsureInserted(dest)) {
|
|
auto* destination = MakeDisplayItem<nsDisplayDestination>(
|
|
aBuilder, aFrame, dest.get(), aFrame->GetRect().TopLeft());
|
|
mList->AppendToTop(destination);
|
|
}
|
|
}
|
|
};
|
|
|
|
if (StaticPrefs::print_save_as_pdf_internal_destinations_enabled()) {
|
|
if (elem->HasID()) {
|
|
maybeGenerateDest(nsGkAtoms::id);
|
|
}
|
|
if (elem->HasName()) {
|
|
maybeGenerateDest(nsGkAtoms::name);
|
|
}
|
|
}
|
|
|
|
// Links don't nest, so if the builder already has a destination, no need to
|
|
// check for a link element here.
|
|
if (!aBuilder->mLinkURI.IsEmpty() || !aBuilder->mLinkDest.IsEmpty()) {
|
|
return;
|
|
}
|
|
|
|
// Check if we have actually found a link.
|
|
if (!elem->IsLink()) {
|
|
return;
|
|
}
|
|
|
|
nsCOMPtr<nsIURI> uri = elem->GetHrefURI();
|
|
if (!uri) {
|
|
return;
|
|
}
|
|
|
|
// Is it potentially a local (in-document) destination?
|
|
bool hasRef, eqExRef;
|
|
nsIURI* docURI;
|
|
if (StaticPrefs::print_save_as_pdf_internal_destinations_enabled() &&
|
|
NS_SUCCEEDED(uri->GetHasRef(&hasRef)) && hasRef &&
|
|
(docURI = aFrame->PresContext()->Document()->GetDocumentURI()) &&
|
|
NS_SUCCEEDED(uri->EqualsExceptRef(docURI, &eqExRef)) && eqExRef) {
|
|
// Try to get a local destination name. If this fails, we'll leave the
|
|
// mLinkDest string empty, but still try to set mLinkURI below.
|
|
if (NS_FAILED(uri->GetRef(aBuilder->mLinkDest))) {
|
|
aBuilder->mLinkDest.Truncate();
|
|
}
|
|
// The destination name is simply a string; we don't want URL-escaping
|
|
// applied to it.
|
|
if (!aBuilder->mLinkDest.IsEmpty()) {
|
|
NS_UnescapeURL(aBuilder->mLinkDest);
|
|
}
|
|
}
|
|
|
|
if (NS_FAILED(uri->GetSpec(aBuilder->mLinkURI))) {
|
|
aBuilder->mLinkURI.Truncate();
|
|
}
|
|
|
|
// If we didn't get either kind of destination, we won't try to linkify at
|
|
// this level.
|
|
if (aBuilder->mLinkDest.IsEmpty() && aBuilder->mLinkURI.IsEmpty()) {
|
|
return;
|
|
}
|
|
|
|
// Record that we need to reset the builder's state on destruction.
|
|
mBuilderToReset = aBuilder;
|
|
}
|
|
|
|
void nsDisplayListBuilder::Linkifier::MaybeAppendLink(
|
|
nsDisplayListBuilder* aBuilder, nsIFrame* aFrame) {
|
|
// Note that we may generate a link here even if the constructor bailed out
|
|
// without updating aBuilder->mLinkURI/Dest, because it may have been set by
|
|
// an ancestor that was associated with a link element.
|
|
if (!aBuilder->mLinkURI.IsEmpty() || !aBuilder->mLinkDest.IsEmpty()) {
|
|
auto* link = MakeDisplayItem<nsDisplayLink>(
|
|
aBuilder, aFrame, aBuilder->mLinkDest.get(), aBuilder->mLinkURI.get(),
|
|
aFrame->GetRect());
|
|
mList->AppendToTop(link);
|
|
}
|
|
}
|
|
|
|
uint32_t nsDisplayListBuilder::sPaintSequenceNumber(1);
|
|
|
|
nsDisplayListBuilder::nsDisplayListBuilder(nsIFrame* aReferenceFrame,
|
|
nsDisplayListBuilderMode aMode,
|
|
bool aBuildCaret,
|
|
bool aRetainingDisplayList)
|
|
: mReferenceFrame(aReferenceFrame),
|
|
mIgnoreScrollFrame(nullptr),
|
|
mCurrentActiveScrolledRoot(nullptr),
|
|
mCurrentContainerASR(nullptr),
|
|
mCurrentFrame(aReferenceFrame),
|
|
mCurrentReferenceFrame(aReferenceFrame),
|
|
mScrollInfoItemsForHoisting(nullptr),
|
|
mFirstClipChainToDestroy(nullptr),
|
|
mTableBackgroundSet(nullptr),
|
|
mCurrentScrollParentId(ScrollableLayerGuid::NULL_SCROLL_ID),
|
|
mCurrentScrollbarTarget(ScrollableLayerGuid::NULL_SCROLL_ID),
|
|
mFilterASR(nullptr),
|
|
mDirtyRect(-1, -1, -1, -1),
|
|
mBuildingExtraPagesForPageNum(0),
|
|
mMode(aMode),
|
|
mContainsBlendMode(false),
|
|
mIsBuildingScrollbar(false),
|
|
mCurrentScrollbarWillHaveLayer(false),
|
|
mBuildCaret(aBuildCaret),
|
|
mRetainingDisplayList(aRetainingDisplayList),
|
|
mPartialUpdate(false),
|
|
mIgnoreSuppression(false),
|
|
mIncludeAllOutOfFlows(false),
|
|
mDescendIntoSubdocuments(true),
|
|
mSelectedFramesOnly(false),
|
|
mAllowMergingAndFlattening(true),
|
|
mInTransform(false),
|
|
mInEventsOnly(false),
|
|
mInFilter(false),
|
|
mInPageSequence(false),
|
|
mIsInChromePresContext(false),
|
|
mSyncDecodeImages(false),
|
|
mIsPaintingToWindow(false),
|
|
mUseHighQualityScaling(false),
|
|
mIsPaintingForWebRender(false),
|
|
mAncestorHasApzAwareEventHandler(false),
|
|
mHaveScrollableDisplayPort(false),
|
|
mWindowDraggingAllowed(false),
|
|
mIsBuildingForPopup(nsLayoutUtils::IsPopup(aReferenceFrame)),
|
|
mForceLayerForScrollParent(false),
|
|
mContainsNonMinimalDisplayPort(false),
|
|
mAsyncPanZoomEnabled(nsLayoutUtils::AsyncPanZoomEnabled(aReferenceFrame)),
|
|
mBuildingInvisibleItems(false),
|
|
mIsBuilding(false),
|
|
mInInvalidSubtree(false),
|
|
mDisablePartialUpdates(false),
|
|
mPartialBuildFailed(false),
|
|
mIsInActiveDocShell(false),
|
|
mBuildAsyncZoomContainer(false),
|
|
mIsRelativeToLayoutViewport(false),
|
|
mUseOverlayScrollbars(false),
|
|
mAlwaysLayerizeScrollbars(false) {
|
|
MOZ_COUNT_CTOR(nsDisplayListBuilder);
|
|
|
|
mBuildCompositorHitTestInfo = mAsyncPanZoomEnabled && IsForPainting();
|
|
|
|
ShouldRebuildDisplayListDueToPrefChange();
|
|
|
|
mUseOverlayScrollbars =
|
|
!!LookAndFeel::GetInt(LookAndFeel::IntID::UseOverlayScrollbars);
|
|
|
|
mAlwaysLayerizeScrollbars =
|
|
StaticPrefs::layout_scrollbars_always_layerize_track();
|
|
|
|
static_assert(
|
|
static_cast<uint32_t>(DisplayItemType::TYPE_MAX) < (1 << TYPE_BITS),
|
|
"Check TYPE_MAX should not overflow");
|
|
|
|
mIsReusingStackingContextItems =
|
|
mRetainingDisplayList && StaticPrefs::layout_display_list_retain_sc();
|
|
}
|
|
|
|
void nsDisplayListBuilder::BeginFrame() {
|
|
nsCSSRendering::BeginFrameTreesLocked();
|
|
|
|
mIsPaintingToWindow = false;
|
|
mUseHighQualityScaling = false;
|
|
mIgnoreSuppression = false;
|
|
mInTransform = false;
|
|
mInFilter = false;
|
|
mSyncDecodeImages = false;
|
|
}
|
|
|
|
void nsDisplayListBuilder::EndFrame() {
|
|
NS_ASSERTION(!mInInvalidSubtree,
|
|
"Someone forgot to cleanup mInInvalidSubtree!");
|
|
mCurrentContainerASR = nullptr;
|
|
mActiveScrolledRoots.Clear();
|
|
FreeClipChains();
|
|
FreeTemporaryItems();
|
|
nsCSSRendering::EndFrameTreesLocked();
|
|
}
|
|
|
|
void nsDisplayListBuilder::MarkFrameForDisplay(nsIFrame* aFrame,
|
|
const nsIFrame* aStopAtFrame) {
|
|
mFramesMarkedForDisplay.AppendElement(aFrame);
|
|
for (nsIFrame* f = aFrame; f;
|
|
f = nsLayoutUtils::GetParentOrPlaceholderForCrossDoc(f)) {
|
|
if (f->HasAnyStateBits(NS_FRAME_FORCE_DISPLAY_LIST_DESCEND_INTO)) {
|
|
return;
|
|
}
|
|
f->AddStateBits(NS_FRAME_FORCE_DISPLAY_LIST_DESCEND_INTO);
|
|
if (f == aStopAtFrame) {
|
|
// we've reached a frame that we know will be painted, so we can stop.
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void nsDisplayListBuilder::AddFrameMarkedForDisplayIfVisible(nsIFrame* aFrame) {
|
|
mFramesMarkedForDisplayIfVisible.AppendElement(aFrame);
|
|
}
|
|
|
|
static void MarkFrameForDisplayIfVisibleInternal(nsIFrame* aFrame,
|
|
const nsIFrame* aStopAtFrame) {
|
|
for (nsIFrame* f = aFrame; f; f = nsLayoutUtils::GetDisplayListParent(f)) {
|
|
if (f->ForceDescendIntoIfVisible()) {
|
|
return;
|
|
}
|
|
f->SetForceDescendIntoIfVisible(true);
|
|
|
|
// This condition must match the condition in
|
|
// nsLayoutUtils::GetParentOrPlaceholderFor which is used by
|
|
// nsLayoutUtils::GetDisplayListParent
|
|
if (f->HasAnyStateBits(NS_FRAME_OUT_OF_FLOW) && !f->GetPrevInFlow()) {
|
|
nsIFrame* parent = f->GetParent();
|
|
if (parent && !parent->ForceDescendIntoIfVisible()) {
|
|
// If the GetDisplayListParent call is going to walk to a placeholder,
|
|
// in rare cases the placeholder might be contained in a different
|
|
// continuation from the oof. So we have to make sure to mark the oofs
|
|
// parent. In the common case this doesn't make us do any extra work,
|
|
// just changes the order in which we visit the frames since walking
|
|
// through placeholders will walk through the parent, and we stop when
|
|
// we find a ForceDescendIntoIfVisible bit set.
|
|
MarkFrameForDisplayIfVisibleInternal(parent, aStopAtFrame);
|
|
}
|
|
}
|
|
|
|
if (f == aStopAtFrame) {
|
|
// we've reached a frame that we know will be painted, so we can stop.
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void nsDisplayListBuilder::MarkFrameForDisplayIfVisible(
|
|
nsIFrame* aFrame, const nsIFrame* aStopAtFrame) {
|
|
AddFrameMarkedForDisplayIfVisible(aFrame);
|
|
|
|
MarkFrameForDisplayIfVisibleInternal(aFrame, aStopAtFrame);
|
|
}
|
|
|
|
void nsDisplayListBuilder::SetIsRelativeToLayoutViewport() {
|
|
mIsRelativeToLayoutViewport = true;
|
|
UpdateShouldBuildAsyncZoomContainer();
|
|
}
|
|
|
|
void nsDisplayListBuilder::ForceLayerForScrollParent() {
|
|
mForceLayerForScrollParent = true;
|
|
mNumActiveScrollframesEncountered++;
|
|
}
|
|
|
|
void nsDisplayListBuilder::UpdateShouldBuildAsyncZoomContainer() {
|
|
const Document* document = mReferenceFrame->PresContext()->Document();
|
|
mBuildAsyncZoomContainer = !mIsRelativeToLayoutViewport &&
|
|
!document->Fullscreen() &&
|
|
nsLayoutUtils::AllowZoomingForDocument(document);
|
|
|
|
// If mIsRelativeToLayoutViewport == false, hit-testing on this
|
|
// display list will take into account the pres shell resolution.
|
|
// If we're not building an async zoom container (meaning, the
|
|
// resolution will not take effect visually), the resolution better
|
|
// be 1.0, otherwise rendering and hit-testing are out of sync.
|
|
#ifdef DEBUG
|
|
if (!mIsRelativeToLayoutViewport && !mBuildAsyncZoomContainer) {
|
|
MOZ_ASSERT(document->GetPresShell()->GetResolution() == 1.0f);
|
|
}
|
|
#endif
|
|
}
|
|
|
|
// Certain prefs may cause display list items to be added or removed when they
|
|
// are toggled. In those cases, we need to fully rebuild the display list.
|
|
bool nsDisplayListBuilder::ShouldRebuildDisplayListDueToPrefChange() {
|
|
// If we transition between wrapping the RCD-RSF contents into an async
|
|
// zoom container vs. not, we need to rebuild the display list. This only
|
|
// happens when the zooming or container scrolling prefs are toggled
|
|
// (manually by the user, or during test setup).
|
|
bool didBuildAsyncZoomContainer = mBuildAsyncZoomContainer;
|
|
UpdateShouldBuildAsyncZoomContainer();
|
|
|
|
bool hadOverlayScrollbarsLastTime = mUseOverlayScrollbars;
|
|
mUseOverlayScrollbars =
|
|
!!LookAndFeel::GetInt(LookAndFeel::IntID::UseOverlayScrollbars);
|
|
|
|
bool alwaysLayerizedScrollbarsLastTime = mAlwaysLayerizeScrollbars;
|
|
mAlwaysLayerizeScrollbars =
|
|
StaticPrefs::layout_scrollbars_always_layerize_track();
|
|
|
|
if (didBuildAsyncZoomContainer != mBuildAsyncZoomContainer) {
|
|
return true;
|
|
}
|
|
|
|
if (hadOverlayScrollbarsLastTime != mUseOverlayScrollbars) {
|
|
return true;
|
|
}
|
|
|
|
if (alwaysLayerizedScrollbarsLastTime != mAlwaysLayerizeScrollbars) {
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
void nsDisplayListBuilder::AddScrollContainerFrameToNotify(
|
|
ScrollContainerFrame* aScrollContainerFrame) {
|
|
mScrollContainerFramesToNotify.insert(aScrollContainerFrame);
|
|
}
|
|
|
|
void nsDisplayListBuilder::NotifyAndClearScrollContainerFrames() {
|
|
for (const auto& it : mScrollContainerFramesToNotify) {
|
|
it->NotifyApzTransaction();
|
|
}
|
|
mScrollContainerFramesToNotify.clear();
|
|
}
|
|
|
|
bool nsDisplayListBuilder::MarkOutOfFlowFrameForDisplay(
|
|
nsIFrame* aDirtyFrame, nsIFrame* aFrame, const nsRect& aVisibleRect,
|
|
const nsRect& aDirtyRect) {
|
|
MOZ_ASSERT(aFrame->GetParent() == aDirtyFrame);
|
|
nsRect dirty;
|
|
nsRect visible = OutOfFlowDisplayData::ComputeVisibleRectForFrame(
|
|
this, aFrame, aVisibleRect, aDirtyRect, &dirty);
|
|
if (!aFrame->HasAnyStateBits(NS_FRAME_FORCE_DISPLAY_LIST_DESCEND_INTO) &&
|
|
visible.IsEmpty()) {
|
|
return false;
|
|
}
|
|
|
|
// Only MarkFrameForDisplay if we're dirty. If this is a nested out-of-flow
|
|
// frame, then it will also mark any outer frames to ensure that building
|
|
// reaches the dirty feame.
|
|
if (!dirty.IsEmpty() || aFrame->ForceDescendIntoIfVisible()) {
|
|
MarkFrameForDisplay(aFrame, aDirtyFrame);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static void UnmarkFrameForDisplay(nsIFrame* aFrame,
|
|
const nsIFrame* aStopAtFrame) {
|
|
for (nsIFrame* f = aFrame; f;
|
|
f = nsLayoutUtils::GetParentOrPlaceholderForCrossDoc(f)) {
|
|
if (!f->HasAnyStateBits(NS_FRAME_FORCE_DISPLAY_LIST_DESCEND_INTO)) {
|
|
return;
|
|
}
|
|
f->RemoveStateBits(NS_FRAME_FORCE_DISPLAY_LIST_DESCEND_INTO);
|
|
if (f == aStopAtFrame) {
|
|
// we've reached a frame that we know will be painted, so we can stop.
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void UnmarkFrameForDisplayIfVisible(nsIFrame* aFrame) {
|
|
for (nsIFrame* f = aFrame; f; f = nsLayoutUtils::GetDisplayListParent(f)) {
|
|
if (!f->ForceDescendIntoIfVisible()) {
|
|
return;
|
|
}
|
|
f->SetForceDescendIntoIfVisible(false);
|
|
|
|
// This condition must match the condition in
|
|
// nsLayoutUtils::GetParentOrPlaceholderFor which is used by
|
|
// nsLayoutUtils::GetDisplayListParent
|
|
if (f->HasAnyStateBits(NS_FRAME_OUT_OF_FLOW) && !f->GetPrevInFlow()) {
|
|
nsIFrame* parent = f->GetParent();
|
|
if (parent && parent->ForceDescendIntoIfVisible()) {
|
|
// If the GetDisplayListParent call is going to walk to a placeholder,
|
|
// in rare cases the placeholder might be contained in a different
|
|
// continuation from the oof. So we have to make sure to mark the oofs
|
|
// parent. In the common case this doesn't make us do any extra work,
|
|
// just changes the order in which we visit the frames since walking
|
|
// through placeholders will walk through the parent, and we stop when
|
|
// we find a ForceDescendIntoIfVisible bit set.
|
|
UnmarkFrameForDisplayIfVisible(f);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
nsDisplayListBuilder::~nsDisplayListBuilder() {
|
|
NS_ASSERTION(mFramesMarkedForDisplay.Length() == 0,
|
|
"All frames should have been unmarked");
|
|
NS_ASSERTION(mFramesWithOOFData.Length() == 0,
|
|
"All OOF data should have been removed");
|
|
NS_ASSERTION(mPresShellStates.Length() == 0,
|
|
"All presshells should have been exited");
|
|
|
|
DisplayItemClipChain* c = mFirstClipChainToDestroy;
|
|
while (c) {
|
|
DisplayItemClipChain* next = c->mNextClipChainToDestroy;
|
|
c->DisplayItemClipChain::~DisplayItemClipChain();
|
|
c = next;
|
|
}
|
|
|
|
MOZ_COUNT_DTOR(nsDisplayListBuilder);
|
|
}
|
|
|
|
uint32_t nsDisplayListBuilder::GetBackgroundPaintFlags() {
|
|
uint32_t flags = 0;
|
|
if (mSyncDecodeImages) {
|
|
flags |= nsCSSRendering::PAINTBG_SYNC_DECODE_IMAGES;
|
|
}
|
|
if (mIsPaintingToWindow) {
|
|
flags |= nsCSSRendering::PAINTBG_TO_WINDOW;
|
|
}
|
|
if (mUseHighQualityScaling) {
|
|
flags |= nsCSSRendering::PAINTBG_HIGH_QUALITY_SCALING;
|
|
}
|
|
return flags;
|
|
}
|
|
|
|
// TODO(emilio): Maybe unify BackgroundPaintFlags and IamgeRendererFlags.
|
|
uint32_t nsDisplayListBuilder::GetImageRendererFlags() const {
|
|
uint32_t flags = 0;
|
|
if (mSyncDecodeImages) {
|
|
flags |= nsImageRenderer::FLAG_SYNC_DECODE_IMAGES;
|
|
}
|
|
if (mIsPaintingToWindow) {
|
|
flags |= nsImageRenderer::FLAG_PAINTING_TO_WINDOW;
|
|
}
|
|
if (mUseHighQualityScaling) {
|
|
flags |= nsImageRenderer::FLAG_HIGH_QUALITY_SCALING;
|
|
}
|
|
return flags;
|
|
}
|
|
|
|
uint32_t nsDisplayListBuilder::GetImageDecodeFlags() const {
|
|
uint32_t flags = imgIContainer::FLAG_ASYNC_NOTIFY;
|
|
if (mSyncDecodeImages) {
|
|
flags |= imgIContainer::FLAG_SYNC_DECODE;
|
|
} else {
|
|
flags |= imgIContainer::FLAG_SYNC_DECODE_IF_FAST;
|
|
}
|
|
if (mIsPaintingToWindow || mUseHighQualityScaling) {
|
|
flags |= imgIContainer::FLAG_HIGH_QUALITY_SCALING;
|
|
}
|
|
return flags;
|
|
}
|
|
|
|
nsCaret* nsDisplayListBuilder::GetCaret() {
|
|
RefPtr<nsCaret> caret = CurrentPresShellState()->mPresShell->GetCaret();
|
|
return caret;
|
|
}
|
|
|
|
void nsDisplayListBuilder::IncrementPresShellPaintCount(PresShell* aPresShell) {
|
|
if (mIsPaintingToWindow) {
|
|
aPresShell->IncrementPaintCount();
|
|
}
|
|
}
|
|
|
|
void nsDisplayListBuilder::EnterPresShell(const nsIFrame* aReferenceFrame,
|
|
bool aPointerEventsNoneDoc) {
|
|
PresShellState* state = mPresShellStates.AppendElement();
|
|
state->mPresShell = aReferenceFrame->PresShell();
|
|
state->mFirstFrameMarkedForDisplay = mFramesMarkedForDisplay.Length();
|
|
state->mFirstFrameWithOOFData = mFramesWithOOFData.Length();
|
|
|
|
ScrollContainerFrame* sf = state->mPresShell->GetRootScrollContainerFrame();
|
|
if (sf && IsInSubdocument()) {
|
|
// We are forcing a rebuild of nsDisplayCanvasBackgroundColor to make sure
|
|
// that the canvas background color will be set correctly, and that only one
|
|
// unscrollable item will be created.
|
|
// This is done to avoid, for example, a case where only scrollbar frames
|
|
// are invalidated - we would skip creating nsDisplayCanvasBackgroundColor
|
|
// and possibly end up with an extra nsDisplaySolidColor item.
|
|
// We skip this for the root document, since we don't want to use
|
|
// MarkFrameForDisplayIfVisible before ComputeRebuildRegion. We'll
|
|
// do it manually there.
|
|
nsCanvasFrame* canvasFrame = do_QueryFrame(sf->GetScrolledFrame());
|
|
if (canvasFrame) {
|
|
MarkFrameForDisplayIfVisible(canvasFrame, aReferenceFrame);
|
|
}
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
state->mAutoLayoutPhase.emplace(aReferenceFrame->PresContext(),
|
|
nsLayoutPhase::DisplayListBuilding);
|
|
#endif
|
|
|
|
state->mPresShell->UpdateCanvasBackground();
|
|
|
|
bool buildCaret = mBuildCaret;
|
|
if (mIgnoreSuppression || !state->mPresShell->IsPaintingSuppressed()) {
|
|
state->mIsBackgroundOnly = false;
|
|
} else {
|
|
state->mIsBackgroundOnly = true;
|
|
buildCaret = false;
|
|
}
|
|
|
|
bool pointerEventsNone = aPointerEventsNoneDoc;
|
|
if (IsInSubdocument()) {
|
|
pointerEventsNone |= mPresShellStates[mPresShellStates.Length() - 2]
|
|
.mInsidePointerEventsNoneDoc;
|
|
}
|
|
state->mInsidePointerEventsNoneDoc = pointerEventsNone;
|
|
|
|
state->mPresShellIgnoreScrollFrame =
|
|
state->mPresShell->IgnoringViewportScrolling()
|
|
? state->mPresShell->GetRootScrollContainerFrame()
|
|
: nullptr;
|
|
|
|
nsPresContext* pc = aReferenceFrame->PresContext();
|
|
mIsInChromePresContext = pc->IsChrome();
|
|
nsIDocShell* docShell = pc->GetDocShell();
|
|
|
|
if (docShell) {
|
|
docShell->GetWindowDraggingAllowed(&mWindowDraggingAllowed);
|
|
}
|
|
|
|
state->mTouchEventPrefEnabledDoc = dom::TouchEvent::PrefEnabled(docShell);
|
|
|
|
if (!buildCaret) {
|
|
return;
|
|
}
|
|
|
|
state->mCaretFrame = [&]() -> nsIFrame* {
|
|
RefPtr<nsCaret> caret = state->mPresShell->GetCaret();
|
|
nsIFrame* currentCaret = caret->GetPaintGeometry(&mCaretRect);
|
|
if (!currentCaret) {
|
|
return nullptr;
|
|
}
|
|
|
|
// Check if the display root for the caret matches the display root that
|
|
// we're painting, and only use it if it matches. Likely we only need this
|
|
// for carets inside popups.
|
|
if (nsLayoutUtils::GetDisplayRootFrame(currentCaret) !=
|
|
nsLayoutUtils::GetDisplayRootFrame(aReferenceFrame)) {
|
|
return nullptr;
|
|
}
|
|
|
|
// Caret frames add visual area to their frame, but we don't update the
|
|
// overflow area. Use flags to make sure we build display items for that
|
|
// frame instead.
|
|
MOZ_ASSERT(currentCaret->PresShell() == state->mPresShell);
|
|
MarkFrameForDisplay(currentCaret, aReferenceFrame);
|
|
caret->SetLastPaintedFrame(currentCaret);
|
|
if (!mPaintedCarets.Contains(caret)) {
|
|
mPaintedCarets.AppendElement(std::move(caret));
|
|
}
|
|
return currentCaret;
|
|
}();
|
|
}
|
|
|
|
// A non-blank paint is a paint that does not just contain the canvas
|
|
// background.
|
|
static bool DisplayListIsNonBlank(nsDisplayList* aList) {
|
|
for (nsDisplayItem* i : *aList) {
|
|
switch (i->GetType()) {
|
|
case DisplayItemType::TYPE_COMPOSITOR_HITTEST_INFO:
|
|
case DisplayItemType::TYPE_CANVAS_BACKGROUND_COLOR:
|
|
case DisplayItemType::TYPE_CANVAS_BACKGROUND_IMAGE:
|
|
continue;
|
|
case DisplayItemType::TYPE_SOLID_COLOR:
|
|
case DisplayItemType::TYPE_BACKGROUND:
|
|
case DisplayItemType::TYPE_BACKGROUND_COLOR:
|
|
if (i->Frame()->IsCanvasFrame()) {
|
|
continue;
|
|
}
|
|
return true;
|
|
default:
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// A contentful paint is a paint that does contains DOM content (text,
|
|
// images, non-blank canvases, SVG): "First Contentful Paint entry
|
|
// contains a DOMHighResTimeStamp reporting the time when the browser
|
|
// first rendered any text, image (including background images),
|
|
// non-white canvas or SVG. This excludes any content of iframes, but
|
|
// includes text with pending webfonts. This is the first time users
|
|
// could start consuming page content."
|
|
static bool DisplayListIsContentful(nsDisplayListBuilder* aBuilder,
|
|
nsDisplayList* aList) {
|
|
for (nsDisplayItem* i : *aList) {
|
|
DisplayItemType type = i->GetType();
|
|
nsDisplayList* children = i->GetChildren();
|
|
|
|
switch (type) {
|
|
case DisplayItemType::TYPE_SUBDOCUMENT: // iframes are ignored
|
|
break;
|
|
// CANVASes check if they may have been modified (as a stand-in
|
|
// actually tracking all modifications)
|
|
default:
|
|
if (i->IsContentful()) {
|
|
bool dummy;
|
|
nsRect bound = i->GetBounds(aBuilder, &dummy);
|
|
if (!bound.IsEmpty()) {
|
|
return true;
|
|
}
|
|
}
|
|
if (children) {
|
|
if (DisplayListIsContentful(aBuilder, children)) {
|
|
return true;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void nsDisplayListBuilder::LeavePresShell(const nsIFrame* aReferenceFrame,
|
|
nsDisplayList* aPaintedContents) {
|
|
NS_ASSERTION(
|
|
CurrentPresShellState()->mPresShell == aReferenceFrame->PresShell(),
|
|
"Presshell mismatch");
|
|
|
|
if (mIsPaintingToWindow && aPaintedContents) {
|
|
nsPresContext* pc = aReferenceFrame->PresContext();
|
|
if (!pc->HadNonBlankPaint()) {
|
|
if (!CurrentPresShellState()->mIsBackgroundOnly &&
|
|
DisplayListIsNonBlank(aPaintedContents)) {
|
|
pc->NotifyNonBlankPaint();
|
|
}
|
|
}
|
|
nsRootPresContext* rootPresContext = pc->GetRootPresContext();
|
|
if (!pc->HasStoppedGeneratingLCP() && rootPresContext) {
|
|
if (!CurrentPresShellState()->mIsBackgroundOnly) {
|
|
if (pc->HasEverBuiltInvisibleText() ||
|
|
DisplayListIsContentful(this, aPaintedContents)) {
|
|
pc->NotifyContentfulPaint();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
ResetMarkedFramesForDisplayList(aReferenceFrame);
|
|
mPresShellStates.RemoveLastElement();
|
|
|
|
if (!mPresShellStates.IsEmpty()) {
|
|
nsPresContext* pc = CurrentPresContext();
|
|
nsIDocShell* docShell = pc->GetDocShell();
|
|
if (docShell) {
|
|
docShell->GetWindowDraggingAllowed(&mWindowDraggingAllowed);
|
|
}
|
|
mIsInChromePresContext = pc->IsChrome();
|
|
} else {
|
|
for (uint32_t i = 0; i < mFramesMarkedForDisplayIfVisible.Length(); ++i) {
|
|
UnmarkFrameForDisplayIfVisible(mFramesMarkedForDisplayIfVisible[i]);
|
|
}
|
|
mFramesMarkedForDisplayIfVisible.SetLength(0);
|
|
}
|
|
}
|
|
|
|
void nsDisplayListBuilder::FreeClipChains() {
|
|
// Iterate the clip chains from newest to oldest (forward
|
|
// iteration), so that we destroy descendants first which
|
|
// will drop the ref count on their ancestors.
|
|
DisplayItemClipChain** indirect = &mFirstClipChainToDestroy;
|
|
|
|
while (*indirect) {
|
|
if (!(*indirect)->mRefCount) {
|
|
DisplayItemClipChain* next = (*indirect)->mNextClipChainToDestroy;
|
|
|
|
mClipDeduplicator.erase(*indirect);
|
|
(*indirect)->DisplayItemClipChain::~DisplayItemClipChain();
|
|
Destroy(DisplayListArenaObjectId::CLIPCHAIN, *indirect);
|
|
|
|
*indirect = next;
|
|
} else {
|
|
indirect = &(*indirect)->mNextClipChainToDestroy;
|
|
}
|
|
}
|
|
}
|
|
|
|
void nsDisplayListBuilder::FreeTemporaryItems() {
|
|
for (nsDisplayItem* i : mTemporaryItems) {
|
|
// Temporary display items are not added to the frames.
|
|
MOZ_ASSERT(i->Frame());
|
|
i->RemoveFrame(i->Frame());
|
|
i->Destroy(this);
|
|
}
|
|
|
|
mTemporaryItems.Clear();
|
|
}
|
|
|
|
void nsDisplayListBuilder::ResetMarkedFramesForDisplayList(
|
|
const nsIFrame* aReferenceFrame) {
|
|
// Unmark and pop off the frames marked for display in this pres shell.
|
|
uint32_t firstFrameForShell =
|
|
CurrentPresShellState()->mFirstFrameMarkedForDisplay;
|
|
for (uint32_t i = firstFrameForShell; i < mFramesMarkedForDisplay.Length();
|
|
++i) {
|
|
UnmarkFrameForDisplay(mFramesMarkedForDisplay[i], aReferenceFrame);
|
|
}
|
|
mFramesMarkedForDisplay.SetLength(firstFrameForShell);
|
|
|
|
firstFrameForShell = CurrentPresShellState()->mFirstFrameWithOOFData;
|
|
for (uint32_t i = firstFrameForShell; i < mFramesWithOOFData.Length(); ++i) {
|
|
mFramesWithOOFData[i]->RemoveProperty(OutOfFlowDisplayDataProperty());
|
|
}
|
|
mFramesWithOOFData.SetLength(firstFrameForShell);
|
|
}
|
|
|
|
void nsDisplayListBuilder::ClearFixedBackgroundDisplayData() {
|
|
CurrentPresShellState()->mFixedBackgroundDisplayData = Nothing();
|
|
}
|
|
|
|
void nsDisplayListBuilder::MarkFramesForDisplayList(
|
|
nsIFrame* aDirtyFrame, const nsFrameList& aFrames) {
|
|
nsRect visibleRect = GetVisibleRect();
|
|
nsRect dirtyRect = GetDirtyRect();
|
|
|
|
// If we are entering content that is fixed to the RCD-RSF, we are
|
|
// crossing the async zoom container boundary, and need to convert from
|
|
// visual to layout coordinates.
|
|
if (ViewportFrame* viewportFrame = do_QueryFrame(aDirtyFrame)) {
|
|
if (IsForEventDelivery() && ShouldBuildAsyncZoomContainer() &&
|
|
viewportFrame->PresContext()->IsRootContentDocumentCrossProcess()) {
|
|
if (viewportFrame->PresShell()->GetRootScrollContainerFrame()) {
|
|
#ifdef DEBUG
|
|
for (nsIFrame* f : aFrames) {
|
|
MOZ_ASSERT(ViewportUtils::IsZoomedContentRoot(f));
|
|
}
|
|
#endif
|
|
visibleRect = ViewportUtils::VisualToLayout(visibleRect,
|
|
viewportFrame->PresShell());
|
|
dirtyRect = ViewportUtils::VisualToLayout(dirtyRect,
|
|
viewportFrame->PresShell());
|
|
}
|
|
#ifdef DEBUG
|
|
else {
|
|
// This is an edge case that should only happen if we are in a
|
|
// document with a XUL root element so that it does not have a root
|
|
// scroll frame but it has fixed pos content and all of the frames in
|
|
// aFrames are that fixed pos content.
|
|
for (nsIFrame* f : aFrames) {
|
|
MOZ_ASSERT(!ViewportUtils::IsZoomedContentRoot(f) &&
|
|
f->GetParent() == aDirtyFrame &&
|
|
f->StyleDisplay()->mPosition ==
|
|
StylePositionProperty::Fixed);
|
|
}
|
|
// There's no root scroll frame so there can't be any zooming or async
|
|
// panning so we don't need to adjust the visible and dirty rects.
|
|
}
|
|
#endif
|
|
}
|
|
}
|
|
|
|
bool markedFrames = false;
|
|
for (nsIFrame* e : aFrames) {
|
|
// Skip the AccessibleCaret frame when building no caret.
|
|
if (!IsBuildingCaret()) {
|
|
nsIContent* content = e->GetContent();
|
|
if (content && content->IsInNativeAnonymousSubtree() &&
|
|
content->IsElement()) {
|
|
const nsAttrValue* classes = content->AsElement()->GetClasses();
|
|
if (classes &&
|
|
classes->Contains(nsGkAtoms::mozAccessiblecaret, eCaseMatters)) {
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
if (MarkOutOfFlowFrameForDisplay(aDirtyFrame, e, visibleRect, dirtyRect)) {
|
|
markedFrames = true;
|
|
}
|
|
}
|
|
|
|
if (markedFrames) {
|
|
// mClipState.GetClipChainForContainingBlockDescendants can return pointers
|
|
// to objects on the stack, so we need to clone the chain.
|
|
const DisplayItemClipChain* clipChain =
|
|
CopyWholeChain(mClipState.GetClipChainForContainingBlockDescendants());
|
|
const DisplayItemClipChain* combinedClipChain =
|
|
mClipState.GetCurrentCombinedClipChain(this);
|
|
const ActiveScrolledRoot* asr = mCurrentActiveScrolledRoot;
|
|
|
|
OutOfFlowDisplayData* data = new OutOfFlowDisplayData(
|
|
clipChain, combinedClipChain, asr, this->mCurrentScrollParentId,
|
|
visibleRect, dirtyRect);
|
|
aDirtyFrame->SetProperty(
|
|
nsDisplayListBuilder::OutOfFlowDisplayDataProperty(), data);
|
|
mFramesWithOOFData.AppendElement(aDirtyFrame);
|
|
}
|
|
|
|
if (!aDirtyFrame->GetParent()) {
|
|
// This is the viewport frame of aDirtyFrame's presshell.
|
|
// Store the current display data so that it can be used for fixed
|
|
// background images.
|
|
NS_ASSERTION(
|
|
CurrentPresShellState()->mPresShell == aDirtyFrame->PresShell(),
|
|
"Presshell mismatch");
|
|
MOZ_ASSERT(!CurrentPresShellState()->mFixedBackgroundDisplayData,
|
|
"already traversed this presshell's root frame?");
|
|
|
|
const DisplayItemClipChain* clipChain =
|
|
CopyWholeChain(mClipState.GetClipChainForContainingBlockDescendants());
|
|
const DisplayItemClipChain* combinedClipChain =
|
|
mClipState.GetCurrentCombinedClipChain(this);
|
|
const ActiveScrolledRoot* asr = mCurrentActiveScrolledRoot;
|
|
CurrentPresShellState()->mFixedBackgroundDisplayData.emplace(
|
|
clipChain, combinedClipChain, asr, this->mCurrentScrollParentId,
|
|
GetVisibleRect(), GetDirtyRect());
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Mark all preserve-3d children with
|
|
* NS_FRAME_FORCE_DISPLAY_LIST_DESCEND_INTO to make sure
|
|
* nsIFrame::BuildDisplayListForChild() would visit them. Also compute
|
|
* dirty rect for preserve-3d children.
|
|
*
|
|
* @param aDirtyFrame is the frame to mark children extending context.
|
|
*/
|
|
void nsDisplayListBuilder::MarkPreserve3DFramesForDisplayList(
|
|
nsIFrame* aDirtyFrame) {
|
|
for (const auto& childList : aDirtyFrame->ChildLists()) {
|
|
for (nsIFrame* child : childList.mList) {
|
|
if (child->Combines3DTransformWithAncestors()) {
|
|
MarkFrameForDisplay(child, aDirtyFrame);
|
|
}
|
|
|
|
if (child->IsBlockWrapper()) {
|
|
// Mark preserve-3d frames inside the block wrapper.
|
|
MarkPreserve3DFramesForDisplayList(child);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
ActiveScrolledRoot* nsDisplayListBuilder::AllocateActiveScrolledRoot(
|
|
const ActiveScrolledRoot* aParent,
|
|
ScrollContainerFrame* aScrollContainerFrame) {
|
|
RefPtr<ActiveScrolledRoot> asr = ActiveScrolledRoot::CreateASRForFrame(
|
|
aParent, aScrollContainerFrame, IsRetainingDisplayList());
|
|
mActiveScrolledRoots.AppendElement(asr);
|
|
return asr;
|
|
}
|
|
|
|
const DisplayItemClipChain* nsDisplayListBuilder::AllocateDisplayItemClipChain(
|
|
const DisplayItemClip& aClip, const ActiveScrolledRoot* aASR,
|
|
const DisplayItemClipChain* aParent) {
|
|
MOZ_DIAGNOSTIC_ASSERT(!(aParent && aParent->mOnStack));
|
|
void* p = Allocate(sizeof(DisplayItemClipChain),
|
|
DisplayListArenaObjectId::CLIPCHAIN);
|
|
DisplayItemClipChain* c = new (KnownNotNull, p)
|
|
DisplayItemClipChain(aClip, aASR, aParent, mFirstClipChainToDestroy);
|
|
#if defined(DEBUG) || defined(MOZ_DIAGNOSTIC_ASSERT_ENABLED)
|
|
c->mOnStack = false;
|
|
#endif
|
|
auto result = mClipDeduplicator.insert(c);
|
|
if (!result.second) {
|
|
// An equivalent clip chain item was already created, so let's return that
|
|
// instead. Destroy the one we just created.
|
|
// Note that this can cause clip chains from different coordinate systems to
|
|
// collapse into the same clip chain object, because clip chains do not keep
|
|
// track of the reference frame that they were created in.
|
|
c->DisplayItemClipChain::~DisplayItemClipChain();
|
|
Destroy(DisplayListArenaObjectId::CLIPCHAIN, c);
|
|
return *(result.first);
|
|
}
|
|
mFirstClipChainToDestroy = c;
|
|
return c;
|
|
}
|
|
|
|
struct ClipChainItem {
|
|
DisplayItemClip clip;
|
|
const ActiveScrolledRoot* asr;
|
|
};
|
|
|
|
static const DisplayItemClipChain* FindCommonAncestorClipForIntersection(
|
|
const DisplayItemClipChain* aOne, const DisplayItemClipChain* aTwo) {
|
|
for (const ActiveScrolledRoot* asr =
|
|
ActiveScrolledRoot::PickDescendant(aOne->mASR, aTwo->mASR);
|
|
asr; asr = asr->mParent) {
|
|
if (aOne == aTwo) {
|
|
return aOne;
|
|
}
|
|
if (aOne->mASR == asr) {
|
|
aOne = aOne->mParent;
|
|
}
|
|
if (aTwo->mASR == asr) {
|
|
aTwo = aTwo->mParent;
|
|
}
|
|
if (!aOne) {
|
|
return aTwo;
|
|
}
|
|
if (!aTwo) {
|
|
return aOne;
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
const DisplayItemClipChain* nsDisplayListBuilder::CreateClipChainIntersection(
|
|
const DisplayItemClipChain* aAncestor,
|
|
const DisplayItemClipChain* aLeafClip1,
|
|
const DisplayItemClipChain* aLeafClip2) {
|
|
AutoTArray<ClipChainItem, 8> intersectedClips;
|
|
|
|
const DisplayItemClipChain* clip1 = aLeafClip1;
|
|
const DisplayItemClipChain* clip2 = aLeafClip2;
|
|
|
|
const ActiveScrolledRoot* asr = ActiveScrolledRoot::PickDescendant(
|
|
clip1 ? clip1->mASR : nullptr, clip2 ? clip2->mASR : nullptr);
|
|
|
|
// Build up the intersection from the leaf to the root and put it into
|
|
// intersectedClips. The loop below will convert intersectedClips into an
|
|
// actual DisplayItemClipChain.
|
|
// (We need to do this in two passes because we need the parent clip in order
|
|
// to create the DisplayItemClipChain object, but the parent clip has not
|
|
// been created at that point.)
|
|
while (!aAncestor || asr != aAncestor->mASR) {
|
|
if (clip1 && clip1->mASR == asr) {
|
|
if (clip2 && clip2->mASR == asr) {
|
|
DisplayItemClip intersection = clip1->mClip;
|
|
intersection.IntersectWith(clip2->mClip);
|
|
intersectedClips.AppendElement(ClipChainItem{intersection, asr});
|
|
clip2 = clip2->mParent;
|
|
} else {
|
|
intersectedClips.AppendElement(ClipChainItem{clip1->mClip, asr});
|
|
}
|
|
clip1 = clip1->mParent;
|
|
} else if (clip2 && clip2->mASR == asr) {
|
|
intersectedClips.AppendElement(ClipChainItem{clip2->mClip, asr});
|
|
clip2 = clip2->mParent;
|
|
}
|
|
if (!asr) {
|
|
MOZ_ASSERT(!aAncestor, "We should have exited this loop earlier");
|
|
break;
|
|
}
|
|
asr = asr->mParent;
|
|
}
|
|
|
|
// Convert intersectedClips into a DisplayItemClipChain.
|
|
const DisplayItemClipChain* parentSC = aAncestor;
|
|
for (auto& sc : Reversed(intersectedClips)) {
|
|
parentSC = AllocateDisplayItemClipChain(sc.clip, sc.asr, parentSC);
|
|
}
|
|
return parentSC;
|
|
}
|
|
|
|
const DisplayItemClipChain* nsDisplayListBuilder::CreateClipChainIntersection(
|
|
const DisplayItemClipChain* aLeafClip1,
|
|
const DisplayItemClipChain* aLeafClip2) {
|
|
// aLeafClip2 might be a reference to a clip on the stack. We need to make
|
|
// sure that CreateClipChainIntersection will allocate the actual intersected
|
|
// clip in the builder's arena, so for the aLeafClip1 == nullptr case,
|
|
// we supply nullptr as the common ancestor so that
|
|
// CreateClipChainIntersection clones the whole chain.
|
|
const DisplayItemClipChain* ancestorClip =
|
|
aLeafClip1 ? FindCommonAncestorClipForIntersection(aLeafClip1, aLeafClip2)
|
|
: nullptr;
|
|
|
|
return CreateClipChainIntersection(ancestorClip, aLeafClip1, aLeafClip2);
|
|
}
|
|
|
|
const DisplayItemClipChain* nsDisplayListBuilder::CopyWholeChain(
|
|
const DisplayItemClipChain* aClipChain) {
|
|
return CreateClipChainIntersection(nullptr, aClipChain, nullptr);
|
|
}
|
|
|
|
const nsIFrame* nsDisplayListBuilder::FindReferenceFrameFor(
|
|
const nsIFrame* aFrame, nsPoint* aOffset) const {
|
|
auto MaybeApplyAdditionalOffset = [&]() {
|
|
if (auto offset = AdditionalOffset()) {
|
|
*aOffset += *offset;
|
|
}
|
|
};
|
|
|
|
if (aFrame == mCurrentFrame) {
|
|
if (aOffset) {
|
|
*aOffset = mCurrentOffsetToReferenceFrame;
|
|
}
|
|
return mCurrentReferenceFrame;
|
|
}
|
|
|
|
for (const nsIFrame* f = aFrame; f;
|
|
f = nsLayoutUtils::GetCrossDocParentFrameInProcess(f)) {
|
|
if (f == mReferenceFrame || f->IsTransformed()) {
|
|
if (aOffset) {
|
|
*aOffset = aFrame->GetOffsetToCrossDoc(f);
|
|
MaybeApplyAdditionalOffset();
|
|
}
|
|
return f;
|
|
}
|
|
}
|
|
|
|
if (aOffset) {
|
|
*aOffset = aFrame->GetOffsetToCrossDoc(mReferenceFrame);
|
|
MaybeApplyAdditionalOffset();
|
|
}
|
|
|
|
return mReferenceFrame;
|
|
}
|
|
|
|
// Sticky frames are active if their nearest scrollable frame is also active.
|
|
static bool IsStickyFrameActive(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame) {
|
|
MOZ_ASSERT(aFrame->StyleDisplay()->mPosition ==
|
|
StylePositionProperty::Sticky);
|
|
|
|
StickyScrollContainer* stickyScrollContainer =
|
|
StickyScrollContainer::GetStickyScrollContainerForFrame(aFrame);
|
|
return stickyScrollContainer && stickyScrollContainer->ScrollContainer()
|
|
->IsMaybeAsynchronouslyScrolled();
|
|
}
|
|
|
|
bool nsDisplayListBuilder::IsAnimatedGeometryRoot(nsIFrame* aFrame,
|
|
nsIFrame** aParent) {
|
|
if (aFrame == mReferenceFrame) {
|
|
return true;
|
|
}
|
|
|
|
if (!IsPaintingToWindow()) {
|
|
if (aParent) {
|
|
*aParent = nsLayoutUtils::GetCrossDocParentFrameInProcess(aFrame);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
nsIFrame* parent = nsLayoutUtils::GetCrossDocParentFrameInProcess(aFrame);
|
|
if (!parent) {
|
|
return true;
|
|
}
|
|
*aParent = parent;
|
|
|
|
if (aFrame->StyleDisplay()->mPosition == StylePositionProperty::Sticky &&
|
|
IsStickyFrameActive(this, aFrame)) {
|
|
return true;
|
|
}
|
|
|
|
if (aFrame->IsTransformed()) {
|
|
if (EffectCompositor::HasAnimationsForCompositor(
|
|
aFrame, DisplayItemType::TYPE_TRANSFORM)) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
if (parent->IsScrollContainerOrSubclass()) {
|
|
ScrollContainerFrame* sf = do_QueryFrame(parent);
|
|
if (sf->GetScrolledFrame() == aFrame) {
|
|
MOZ_ASSERT(!aFrame->IsTransformed());
|
|
return sf->IsMaybeAsynchronouslyScrolled();
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
nsIFrame* nsDisplayListBuilder::FindAnimatedGeometryRootFrameFor(
|
|
nsIFrame* aFrame) {
|
|
MOZ_ASSERT(nsLayoutUtils::IsAncestorFrameCrossDocInProcess(
|
|
RootReferenceFrame(), aFrame));
|
|
nsIFrame* cursor = aFrame;
|
|
while (cursor != RootReferenceFrame()) {
|
|
nsIFrame* next;
|
|
if (IsAnimatedGeometryRoot(cursor, &next)) {
|
|
return cursor;
|
|
}
|
|
cursor = next;
|
|
}
|
|
return cursor;
|
|
}
|
|
|
|
static nsRect ApplyAllClipNonRoundedIntersection(
|
|
const DisplayItemClipChain* aClipChain, const nsRect& aRect) {
|
|
nsRect result = aRect;
|
|
while (aClipChain) {
|
|
result = aClipChain->mClip.ApplyNonRoundedIntersection(result);
|
|
aClipChain = aClipChain->mParent;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
void nsDisplayListBuilder::AdjustWindowDraggingRegion(nsIFrame* aFrame) {
|
|
if (!mWindowDraggingAllowed || !IsForPainting()) {
|
|
return;
|
|
}
|
|
|
|
const nsStyleUIReset* styleUI = aFrame->StyleUIReset();
|
|
if (styleUI->mWindowDragging == StyleWindowDragging::Default) {
|
|
// This frame has the default value and doesn't influence the window
|
|
// dragging region.
|
|
return;
|
|
}
|
|
|
|
LayoutDeviceToLayoutDeviceMatrix4x4 referenceFrameToRootReferenceFrame;
|
|
|
|
// The const_cast is for nsLayoutUtils::GetTransformToAncestor.
|
|
nsIFrame* referenceFrame =
|
|
const_cast<nsIFrame*>(FindReferenceFrameFor(aFrame));
|
|
|
|
if (IsInTransform()) {
|
|
// Only support 2d rectilinear transforms. Transform support is needed for
|
|
// the horizontal flip transform that's applied to the urlbar textbox in
|
|
// RTL mode - it should be able to exclude itself from the draggable region.
|
|
referenceFrameToRootReferenceFrame =
|
|
ViewAs<LayoutDeviceToLayoutDeviceMatrix4x4>(
|
|
nsLayoutUtils::GetTransformToAncestor(RelativeTo{referenceFrame},
|
|
RelativeTo{mReferenceFrame})
|
|
.GetMatrix());
|
|
Matrix referenceFrameToRootReferenceFrame2d;
|
|
if (!referenceFrameToRootReferenceFrame.Is2D(
|
|
&referenceFrameToRootReferenceFrame2d) ||
|
|
!referenceFrameToRootReferenceFrame2d.IsRectilinear()) {
|
|
return;
|
|
}
|
|
} else {
|
|
MOZ_ASSERT(referenceFrame == mReferenceFrame,
|
|
"referenceFrameToRootReferenceFrame needs to be adjusted");
|
|
}
|
|
|
|
// We do some basic visibility checking on the frame's border box here.
|
|
// We intersect it both with the current dirty rect and with the current
|
|
// clip. Either one is just a conservative approximation on its own, but
|
|
// their intersection luckily works well enough for our purposes, so that
|
|
// we don't have to do full-blown visibility computations.
|
|
// The most important case we need to handle is the scrolled-off tab:
|
|
// If the tab bar overflows, tab parts that are clipped by the scrollbox
|
|
// should not be allowed to interfere with the window dragging region. Using
|
|
// just the current DisplayItemClip is not enough to cover this case
|
|
// completely because clips are reset while building stacking context
|
|
// contents, so for example we'd fail to clip frames that have a clip path
|
|
// applied to them. But the current dirty rect doesn't get reset in that
|
|
// case, so we use it to make this case work.
|
|
nsRect borderBox = aFrame->GetRectRelativeToSelf().Intersect(mVisibleRect);
|
|
borderBox += ToReferenceFrame(aFrame);
|
|
const DisplayItemClipChain* clip =
|
|
ClipState().GetCurrentCombinedClipChain(this);
|
|
borderBox = ApplyAllClipNonRoundedIntersection(clip, borderBox);
|
|
if (borderBox.IsEmpty()) {
|
|
return;
|
|
}
|
|
|
|
LayoutDeviceRect devPixelBorderBox = LayoutDevicePixel::FromAppUnits(
|
|
borderBox, aFrame->PresContext()->AppUnitsPerDevPixel());
|
|
|
|
LayoutDeviceRect transformedDevPixelBorderBox =
|
|
TransformBy(referenceFrameToRootReferenceFrame, devPixelBorderBox);
|
|
transformedDevPixelBorderBox.Round();
|
|
LayoutDeviceIntRect transformedDevPixelBorderBoxInt;
|
|
|
|
if (!transformedDevPixelBorderBox.ToIntRect(
|
|
&transformedDevPixelBorderBoxInt)) {
|
|
return;
|
|
}
|
|
|
|
LayoutDeviceIntRegion& region =
|
|
styleUI->mWindowDragging == StyleWindowDragging::Drag
|
|
? mWindowDraggingRegion
|
|
: mWindowNoDraggingRegion;
|
|
|
|
if (!IsRetainingDisplayList()) {
|
|
region.OrWith(transformedDevPixelBorderBoxInt);
|
|
return;
|
|
}
|
|
|
|
gfx::IntRect rect(transformedDevPixelBorderBoxInt.ToUnknownRect());
|
|
if (styleUI->mWindowDragging == StyleWindowDragging::Drag) {
|
|
mRetainedWindowDraggingRegion.Add(aFrame, rect);
|
|
} else {
|
|
mRetainedWindowNoDraggingRegion.Add(aFrame, rect);
|
|
}
|
|
}
|
|
|
|
LayoutDeviceIntRegion nsDisplayListBuilder::GetWindowDraggingRegion() const {
|
|
LayoutDeviceIntRegion result;
|
|
if (!IsRetainingDisplayList()) {
|
|
result.Sub(mWindowDraggingRegion, mWindowNoDraggingRegion);
|
|
return result;
|
|
}
|
|
|
|
LayoutDeviceIntRegion dragRegion =
|
|
mRetainedWindowDraggingRegion.ToLayoutDeviceIntRegion();
|
|
|
|
LayoutDeviceIntRegion noDragRegion =
|
|
mRetainedWindowNoDraggingRegion.ToLayoutDeviceIntRegion();
|
|
|
|
result.Sub(dragRegion, noDragRegion);
|
|
return result;
|
|
}
|
|
|
|
void nsDisplayTransform::AddSizeOfExcludingThis(nsWindowSizes& aSizes) const {
|
|
nsPaintedDisplayItem::AddSizeOfExcludingThis(aSizes);
|
|
aSizes.mLayoutRetainedDisplayListSize +=
|
|
aSizes.mState.mMallocSizeOf(mTransformPreserves3D.get());
|
|
}
|
|
|
|
void nsDisplayListBuilder::AddSizeOfExcludingThis(nsWindowSizes& aSizes) const {
|
|
mPool.AddSizeOfExcludingThis(aSizes, Arena::ArenaKind::DisplayList);
|
|
|
|
size_t n = 0;
|
|
MallocSizeOf mallocSizeOf = aSizes.mState.mMallocSizeOf;
|
|
n += mDocumentWillChangeBudgets.ShallowSizeOfExcludingThis(mallocSizeOf);
|
|
n += mFrameWillChangeBudgets.ShallowSizeOfExcludingThis(mallocSizeOf);
|
|
n += mRetainedWindowDraggingRegion.SizeOfExcludingThis(mallocSizeOf);
|
|
n += mRetainedWindowNoDraggingRegion.SizeOfExcludingThis(mallocSizeOf);
|
|
n += mRetainedWindowOpaqueRegion.SizeOfExcludingThis(mallocSizeOf);
|
|
// XXX can't measure mClipDeduplicator since it uses std::unordered_set.
|
|
|
|
aSizes.mLayoutRetainedDisplayListSize += n;
|
|
}
|
|
|
|
void RetainedDisplayList::AddSizeOfExcludingThis(nsWindowSizes& aSizes) const {
|
|
for (nsDisplayItem* item : *this) {
|
|
item->AddSizeOfExcludingThis(aSizes);
|
|
if (RetainedDisplayList* children = item->GetChildren()) {
|
|
children->AddSizeOfExcludingThis(aSizes);
|
|
}
|
|
}
|
|
|
|
size_t n = 0;
|
|
|
|
n += mDAG.mDirectPredecessorList.ShallowSizeOfExcludingThis(
|
|
aSizes.mState.mMallocSizeOf);
|
|
n += mDAG.mNodesInfo.ShallowSizeOfExcludingThis(aSizes.mState.mMallocSizeOf);
|
|
n += mOldItems.ShallowSizeOfExcludingThis(aSizes.mState.mMallocSizeOf);
|
|
|
|
aSizes.mLayoutRetainedDisplayListSize += n;
|
|
}
|
|
|
|
size_t nsDisplayListBuilder::WeakFrameRegion::SizeOfExcludingThis(
|
|
MallocSizeOf aMallocSizeOf) const {
|
|
size_t n = 0;
|
|
n += mFrames.ShallowSizeOfExcludingThis(aMallocSizeOf);
|
|
for (const auto& frame : mFrames) {
|
|
const UniquePtr<WeakFrame>& weakFrame = frame.mWeakFrame;
|
|
n += aMallocSizeOf(weakFrame.get());
|
|
}
|
|
n += mRects.ShallowSizeOfExcludingThis(aMallocSizeOf);
|
|
return n;
|
|
}
|
|
|
|
/**
|
|
* Removes modified frames and rects from this WeakFrameRegion.
|
|
*/
|
|
void nsDisplayListBuilder::WeakFrameRegion::RemoveModifiedFramesAndRects() {
|
|
MOZ_ASSERT(mFrames.Length() == mRects.Length());
|
|
|
|
uint32_t i = 0;
|
|
uint32_t length = mFrames.Length();
|
|
|
|
while (i < length) {
|
|
auto& wrapper = mFrames[i];
|
|
|
|
if (!wrapper.mWeakFrame->IsAlive() ||
|
|
AnyContentAncestorModified(wrapper.mWeakFrame->GetFrame())) {
|
|
// To avoid multiple O(n) shifts in the array, move the last element of
|
|
// the array to the current position and decrease the array length.
|
|
mFrameSet.Remove(wrapper.mFrame);
|
|
mFrames[i] = std::move(mFrames[length - 1]);
|
|
mRects[i] = std::move(mRects[length - 1]);
|
|
length--;
|
|
} else {
|
|
i++;
|
|
}
|
|
}
|
|
|
|
mFrames.TruncateLength(length);
|
|
mRects.TruncateLength(length);
|
|
}
|
|
|
|
void nsDisplayListBuilder::RemoveModifiedWindowRegions() {
|
|
mRetainedWindowDraggingRegion.RemoveModifiedFramesAndRects();
|
|
mRetainedWindowNoDraggingRegion.RemoveModifiedFramesAndRects();
|
|
mRetainedWindowOpaqueRegion.RemoveModifiedFramesAndRects();
|
|
}
|
|
|
|
void nsDisplayListBuilder::ClearRetainedWindowRegions() {
|
|
mRetainedWindowDraggingRegion.Clear();
|
|
mRetainedWindowNoDraggingRegion.Clear();
|
|
mRetainedWindowOpaqueRegion.Clear();
|
|
}
|
|
|
|
const uint32_t gWillChangeAreaMultiplier = 3;
|
|
static uint32_t GetLayerizationCost(const nsSize& aSize) {
|
|
// There's significant overhead for each layer created from Gecko
|
|
// (IPC+Shared Objects) and from the backend (like an OpenGL texture).
|
|
// Therefore we set a minimum cost threshold of a 64x64 area.
|
|
const int minBudgetCost = 64 * 64;
|
|
|
|
const uint32_t budgetCost = std::max(
|
|
minBudgetCost, nsPresContext::AppUnitsToIntCSSPixels(aSize.width) *
|
|
nsPresContext::AppUnitsToIntCSSPixels(aSize.height));
|
|
|
|
return budgetCost;
|
|
}
|
|
|
|
bool nsDisplayListBuilder::AddToWillChangeBudget(nsIFrame* aFrame,
|
|
const nsSize& aSize) {
|
|
MOZ_ASSERT(IsForPainting());
|
|
|
|
if (aFrame->MayHaveWillChangeBudget()) {
|
|
// The frame is already in the will-change budget.
|
|
return true;
|
|
}
|
|
|
|
const nsPresContext* presContext = aFrame->PresContext();
|
|
const nsRect area = presContext->GetVisibleArea();
|
|
const uint32_t budgetLimit =
|
|
nsPresContext::AppUnitsToIntCSSPixels(area.width) *
|
|
nsPresContext::AppUnitsToIntCSSPixels(area.height);
|
|
const uint32_t cost = GetLayerizationCost(aSize);
|
|
|
|
DocumentWillChangeBudget& documentBudget =
|
|
mDocumentWillChangeBudgets.LookupOrInsert(presContext);
|
|
|
|
const bool onBudget =
|
|
(documentBudget + cost) / gWillChangeAreaMultiplier < budgetLimit;
|
|
|
|
if (onBudget) {
|
|
documentBudget += cost;
|
|
mFrameWillChangeBudgets.InsertOrUpdate(
|
|
aFrame, FrameWillChangeBudget(presContext, cost));
|
|
aFrame->SetMayHaveWillChangeBudget(true);
|
|
}
|
|
|
|
return onBudget;
|
|
}
|
|
|
|
bool nsDisplayListBuilder::IsInWillChangeBudget(nsIFrame* aFrame,
|
|
const nsSize& aSize) {
|
|
if (!IsForPainting()) {
|
|
// If this nsDisplayListBuilder is not for painting, the layerization should
|
|
// not matter. Do the simple thing and return false.
|
|
return false;
|
|
}
|
|
|
|
const bool onBudget = AddToWillChangeBudget(aFrame, aSize);
|
|
if (onBudget) {
|
|
return true;
|
|
}
|
|
|
|
auto* pc = aFrame->PresContext();
|
|
auto* doc = pc->Document();
|
|
if (!doc->HasWarnedAbout(Document::eIgnoringWillChangeOverBudget)) {
|
|
AutoTArray<nsString, 2> params;
|
|
params.AppendElement()->AppendInt(gWillChangeAreaMultiplier);
|
|
|
|
nsRect area = pc->GetVisibleArea();
|
|
uint32_t budgetLimit = nsPresContext::AppUnitsToIntCSSPixels(area.width) *
|
|
nsPresContext::AppUnitsToIntCSSPixels(area.height);
|
|
params.AppendElement()->AppendInt(budgetLimit);
|
|
|
|
doc->WarnOnceAbout(Document::eIgnoringWillChangeOverBudget, false, params);
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
void nsDisplayListBuilder::ClearWillChangeBudgetStatus(nsIFrame* aFrame) {
|
|
MOZ_ASSERT(IsForPainting());
|
|
|
|
if (!aFrame->MayHaveWillChangeBudget()) {
|
|
return;
|
|
}
|
|
|
|
aFrame->SetMayHaveWillChangeBudget(false);
|
|
RemoveFromWillChangeBudgets(aFrame);
|
|
}
|
|
|
|
void nsDisplayListBuilder::RemoveFromWillChangeBudgets(const nsIFrame* aFrame) {
|
|
if (auto entry = mFrameWillChangeBudgets.Lookup(aFrame)) {
|
|
const FrameWillChangeBudget& frameBudget = entry.Data();
|
|
|
|
auto documentBudget =
|
|
mDocumentWillChangeBudgets.Lookup(frameBudget.mPresContext);
|
|
|
|
if (documentBudget) {
|
|
*documentBudget -= frameBudget.mUsage;
|
|
}
|
|
|
|
entry.Remove();
|
|
}
|
|
}
|
|
|
|
void nsDisplayListBuilder::ClearWillChangeBudgets() {
|
|
mFrameWillChangeBudgets.Clear();
|
|
mDocumentWillChangeBudgets.Clear();
|
|
}
|
|
|
|
void nsDisplayListBuilder::EnterSVGEffectsContents(
|
|
nsIFrame* aEffectsFrame, nsDisplayList* aHoistedItemsStorage) {
|
|
MOZ_ASSERT(aHoistedItemsStorage);
|
|
if (mSVGEffectsFrames.IsEmpty()) {
|
|
MOZ_ASSERT(!mScrollInfoItemsForHoisting);
|
|
mScrollInfoItemsForHoisting = aHoistedItemsStorage;
|
|
}
|
|
mSVGEffectsFrames.AppendElement(aEffectsFrame);
|
|
}
|
|
|
|
void nsDisplayListBuilder::ExitSVGEffectsContents() {
|
|
MOZ_ASSERT(!mSVGEffectsFrames.IsEmpty());
|
|
mSVGEffectsFrames.RemoveLastElement();
|
|
MOZ_ASSERT(mScrollInfoItemsForHoisting);
|
|
if (mSVGEffectsFrames.IsEmpty()) {
|
|
mScrollInfoItemsForHoisting = nullptr;
|
|
}
|
|
}
|
|
|
|
bool nsDisplayListBuilder::ShouldBuildScrollInfoItemsForHoisting() const {
|
|
/*
|
|
* Note: if changing the conditions under which scroll info layers
|
|
* are created, make a corresponding change to
|
|
* ScrollFrameWillBuildScrollInfoLayer() in nsSliderFrame.cpp.
|
|
*/
|
|
for (nsIFrame* frame : mSVGEffectsFrames) {
|
|
if (SVGIntegrationUtils::UsesSVGEffectsNotSupportedInCompositor(frame)) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void nsDisplayListBuilder::AppendNewScrollInfoItemForHoisting(
|
|
nsDisplayScrollInfoLayer* aScrollInfoItem) {
|
|
MOZ_ASSERT(ShouldBuildScrollInfoItemsForHoisting());
|
|
MOZ_ASSERT(mScrollInfoItemsForHoisting);
|
|
mScrollInfoItemsForHoisting->AppendToTop(aScrollInfoItem);
|
|
}
|
|
|
|
void nsDisplayListBuilder::BuildCompositorHitTestInfoIfNeeded(
|
|
nsIFrame* aFrame, nsDisplayList* aList) {
|
|
MOZ_ASSERT(aFrame);
|
|
MOZ_ASSERT(aList);
|
|
|
|
if (!BuildCompositorHitTestInfo()) {
|
|
return;
|
|
}
|
|
|
|
const CompositorHitTestInfo info = aFrame->GetCompositorHitTestInfo(this);
|
|
if (info != CompositorHitTestInvisibleToHit) {
|
|
aList->AppendNewToTop<nsDisplayCompositorHitTestInfo>(this, aFrame);
|
|
}
|
|
}
|
|
|
|
void nsDisplayListBuilder::AddReusableDisplayItem(nsDisplayItem* aItem) {
|
|
mReuseableItems.Insert(aItem);
|
|
}
|
|
|
|
void nsDisplayListBuilder::RemoveReusedDisplayItem(nsDisplayItem* aItem) {
|
|
MOZ_ASSERT(aItem->IsReusedItem());
|
|
mReuseableItems.Remove(aItem);
|
|
}
|
|
|
|
void nsDisplayListBuilder::ClearReuseableDisplayItems() {
|
|
const size_t total = mReuseableItems.Count();
|
|
|
|
size_t reused = 0;
|
|
for (auto* item : mReuseableItems) {
|
|
if (item->IsReusedItem()) {
|
|
reused++;
|
|
item->SetReusable();
|
|
} else {
|
|
item->Destroy(this);
|
|
}
|
|
}
|
|
|
|
DL_LOGI("RDL - Reused %zu of %zu SC display items", reused, total);
|
|
mReuseableItems.Clear();
|
|
}
|
|
|
|
void nsDisplayListBuilder::ReuseDisplayItem(nsDisplayItem* aItem) {
|
|
const auto* previous = mCurrentContainerASR;
|
|
const auto* asr = aItem->GetActiveScrolledRoot();
|
|
mCurrentContainerASR =
|
|
ActiveScrolledRoot::PickAncestor(asr, mCurrentContainerASR);
|
|
|
|
if (previous != mCurrentContainerASR) {
|
|
DL_LOGV("RDL - Changed mCurrentContainerASR from %p to %p", previous,
|
|
mCurrentContainerASR);
|
|
}
|
|
|
|
aItem->SetReusedItem();
|
|
}
|
|
|
|
void nsDisplayListSet::CopyTo(const nsDisplayListSet& aDestination) const {
|
|
for (size_t i = 0; i < mLists.size(); ++i) {
|
|
auto* from = mLists[i];
|
|
auto* to = aDestination.mLists[i];
|
|
|
|
from->CopyTo(to);
|
|
}
|
|
}
|
|
|
|
void nsDisplayListSet::MoveTo(const nsDisplayListSet& aDestination) const {
|
|
aDestination.BorderBackground()->AppendToTop(BorderBackground());
|
|
aDestination.BlockBorderBackgrounds()->AppendToTop(BlockBorderBackgrounds());
|
|
aDestination.Floats()->AppendToTop(Floats());
|
|
aDestination.Content()->AppendToTop(Content());
|
|
aDestination.PositionedDescendants()->AppendToTop(PositionedDescendants());
|
|
aDestination.Outlines()->AppendToTop(Outlines());
|
|
}
|
|
|
|
nsRect nsDisplayList::GetClippedBounds(nsDisplayListBuilder* aBuilder) const {
|
|
nsRect bounds;
|
|
for (nsDisplayItem* i : *this) {
|
|
bounds.UnionRect(bounds, i->GetClippedBounds(aBuilder));
|
|
}
|
|
return bounds;
|
|
}
|
|
|
|
nsRect nsDisplayList::GetClippedBoundsWithRespectToASR(
|
|
nsDisplayListBuilder* aBuilder, const ActiveScrolledRoot* aASR,
|
|
nsRect* aBuildingRect) const {
|
|
nsRect bounds;
|
|
for (nsDisplayItem* i : *this) {
|
|
nsRect r = i->GetClippedBounds(aBuilder);
|
|
if (aASR != i->GetActiveScrolledRoot() && !r.IsEmpty()) {
|
|
if (Maybe<nsRect> clip = i->GetClipWithRespectToASR(aBuilder, aASR)) {
|
|
r = clip.ref();
|
|
}
|
|
}
|
|
if (aBuildingRect) {
|
|
aBuildingRect->UnionRect(*aBuildingRect, i->GetBuildingRect());
|
|
}
|
|
bounds.UnionRect(bounds, r);
|
|
}
|
|
return bounds;
|
|
}
|
|
|
|
nsRect nsDisplayList::GetBuildingRect() const {
|
|
nsRect result;
|
|
for (nsDisplayItem* i : *this) {
|
|
result.UnionRect(result, i->GetBuildingRect());
|
|
}
|
|
return result;
|
|
}
|
|
|
|
WindowRenderer* nsDisplayListBuilder::GetWidgetWindowRenderer(nsView** aView) {
|
|
if (aView) {
|
|
*aView = RootReferenceFrame()->GetView();
|
|
}
|
|
if (RootReferenceFrame() !=
|
|
nsLayoutUtils::GetDisplayRootFrame(RootReferenceFrame())) {
|
|
return nullptr;
|
|
}
|
|
nsIWidget* window = RootReferenceFrame()->GetNearestWidget();
|
|
if (window) {
|
|
return window->GetWindowRenderer();
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
WebRenderLayerManager* nsDisplayListBuilder::GetWidgetLayerManager(
|
|
nsView** aView) {
|
|
WindowRenderer* renderer = GetWidgetWindowRenderer();
|
|
if (renderer) {
|
|
return renderer->AsWebRender();
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
void nsDisplayList::Paint(nsDisplayListBuilder* aBuilder, gfxContext* aCtx,
|
|
int32_t aAppUnitsPerDevPixel) {
|
|
FlattenedDisplayListIterator iter(aBuilder, this);
|
|
while (iter.HasNext()) {
|
|
nsPaintedDisplayItem* item = iter.GetNextItem()->AsPaintedDisplayItem();
|
|
if (!item) {
|
|
continue;
|
|
}
|
|
|
|
nsRect visible = item->GetClippedBounds(aBuilder);
|
|
visible = visible.Intersect(item->GetPaintRect(aBuilder, aCtx));
|
|
if (visible.IsEmpty()) {
|
|
continue;
|
|
}
|
|
|
|
DisplayItemClip currentClip = item->GetClip();
|
|
if (currentClip.HasClip()) {
|
|
aCtx->Save();
|
|
if (currentClip.IsRectClippedByRoundedCorner(visible)) {
|
|
currentClip.ApplyTo(aCtx, aAppUnitsPerDevPixel);
|
|
} else {
|
|
currentClip.ApplyRectTo(aCtx, aAppUnitsPerDevPixel);
|
|
}
|
|
}
|
|
aCtx->NewPath();
|
|
|
|
item->Paint(aBuilder, aCtx);
|
|
|
|
if (currentClip.HasClip()) {
|
|
aCtx->Restore();
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* We paint by executing a layer manager transaction, constructing a
|
|
* single layer representing the display list, and then making it the
|
|
* root of the layer manager, drawing into the PaintedLayers.
|
|
*/
|
|
void nsDisplayList::PaintRoot(nsDisplayListBuilder* aBuilder, gfxContext* aCtx,
|
|
uint32_t aFlags,
|
|
Maybe<double> aDisplayListBuildTime) {
|
|
AUTO_PROFILER_LABEL("nsDisplayList::PaintRoot", GRAPHICS);
|
|
|
|
RefPtr<WebRenderLayerManager> layerManager;
|
|
WindowRenderer* renderer = nullptr;
|
|
bool widgetTransaction = false;
|
|
bool doBeginTransaction = true;
|
|
nsView* view = nullptr;
|
|
if (aFlags & PAINT_USE_WIDGET_LAYERS) {
|
|
renderer = aBuilder->GetWidgetWindowRenderer(&view);
|
|
if (renderer) {
|
|
// The fallback renderer doesn't retain any content, so it's
|
|
// not meaningful to use it when drawing to an external context.
|
|
if (aCtx && renderer->AsFallback()) {
|
|
MOZ_ASSERT(!(aFlags & PAINT_EXISTING_TRANSACTION));
|
|
renderer = nullptr;
|
|
} else {
|
|
layerManager = renderer->AsWebRender();
|
|
doBeginTransaction = !(aFlags & PAINT_EXISTING_TRANSACTION);
|
|
widgetTransaction = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
nsIFrame* frame = aBuilder->RootReferenceFrame();
|
|
nsPresContext* presContext = frame->PresContext();
|
|
PresShell* presShell = presContext->PresShell();
|
|
Document* document = presShell->GetDocument();
|
|
|
|
ScopeExit g([&]() {
|
|
#ifdef DEBUG
|
|
MOZ_ASSERT(!layerManager || !layerManager->GetTarget());
|
|
#endif
|
|
|
|
// For layers-free mode, we check the invalidation state bits in the
|
|
// EndTransaction. So we clear the invalidation state bits after
|
|
// EndTransaction.
|
|
if (widgetTransaction ||
|
|
// SVG-as-an-image docs don't paint as part of the retained layer tree,
|
|
// but they still need the invalidation state bits cleared in order for
|
|
// invalidation for CSS/SMIL animation to work properly.
|
|
(document && document->IsBeingUsedAsImage())) {
|
|
DL_LOGD("Clearing invalidation state bits");
|
|
frame->ClearInvalidationStateBits();
|
|
}
|
|
});
|
|
|
|
if (!renderer) {
|
|
if (!aCtx) {
|
|
NS_WARNING("Nowhere to paint into");
|
|
return;
|
|
}
|
|
Paint(aBuilder, aCtx, presContext->AppUnitsPerDevPixel());
|
|
|
|
return;
|
|
}
|
|
|
|
if (renderer->GetBackendType() == LayersBackend::LAYERS_WR) {
|
|
MOZ_ASSERT(layerManager);
|
|
if (doBeginTransaction) {
|
|
if (aCtx) {
|
|
if (!layerManager->BeginTransactionWithTarget(aCtx, nsCString())) {
|
|
return;
|
|
}
|
|
} else {
|
|
if (!layerManager->BeginTransaction(nsCString())) {
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
layerManager->SetTransactionIdAllocator(presContext->RefreshDriver());
|
|
|
|
bool sent = false;
|
|
if (aFlags & PAINT_IDENTICAL_DISPLAY_LIST) {
|
|
MOZ_ASSERT(!aCtx);
|
|
sent = layerManager->EndEmptyTransaction();
|
|
}
|
|
|
|
if (!sent) {
|
|
auto* wrManager = static_cast<WebRenderLayerManager*>(layerManager.get());
|
|
|
|
nsIDocShell* docShell = presContext->GetDocShell();
|
|
WrFiltersHolder wrFilters;
|
|
gfx::Matrix5x4* colorMatrix =
|
|
nsDocShell::Cast(docShell)->GetColorMatrix();
|
|
if (colorMatrix) {
|
|
// Note: This color matrix was added here in for accessibility in
|
|
// https://bugzilla.mozilla.org/show_bug.cgi?id=1431466 , it could be
|
|
// done with regular SVG in the document as long as it is accelerated,
|
|
// and it's probably best to do this in linearRGB, now that it is
|
|
// feasible to do so
|
|
// TODO(ahale): Make sure to test this works correctly before enabling
|
|
if (StaticPrefs::gfx_webrender_svg_filter_effects() &&
|
|
StaticPrefs::
|
|
gfx_webrender_svg_filter_effects_also_use_for_docshell_fecolormatrix()) {
|
|
// WebRender SVGFE code needs a valid filter region, so use 1<<30 as
|
|
// rendering will already be heavily degraded at that range.
|
|
static constexpr float kExtent = 1024.0f * 1024.0f * 1024.0f;
|
|
wr::LayoutRect subregion = {{-kExtent, -kExtent}, {kExtent, kExtent}};
|
|
auto node = wr::FilterOpGraphNode{};
|
|
node.input.buffer_id = wr::FilterOpGraphPictureBufferId::None();
|
|
node.input2.buffer_id = wr::FilterOpGraphPictureBufferId::None();
|
|
node.subregion = subregion;
|
|
wrFilters.filters.AppendElement(
|
|
wr::FilterOp::SVGFESourceGraphic(node));
|
|
node.input.buffer_id = wr::FilterOpGraphPictureBufferId::BufferId(0);
|
|
wrFilters.filters.AppendElement(
|
|
wr::FilterOp::SVGFEColorMatrix(node, colorMatrix->components));
|
|
} else {
|
|
wrFilters.filters.AppendElement(
|
|
wr::FilterOp::ColorMatrix(colorMatrix->components));
|
|
}
|
|
}
|
|
|
|
wrManager->EndTransactionWithoutLayer(this, aBuilder,
|
|
std::move(wrFilters), nullptr,
|
|
aDisplayListBuildTime.valueOr(0.0));
|
|
}
|
|
|
|
if (presContext->RefreshDriver()->HasScheduleFlush()) {
|
|
presContext->NotifyInvalidation(layerManager->GetLastTransactionId(),
|
|
frame->GetRect());
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
FallbackRenderer* fallback = renderer->AsFallback();
|
|
MOZ_ASSERT(fallback);
|
|
|
|
if (doBeginTransaction) {
|
|
MOZ_ASSERT(!aCtx);
|
|
if (!fallback->BeginTransaction()) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
fallback->EndTransactionWithList(aBuilder, this,
|
|
presContext->AppUnitsPerDevPixel(),
|
|
WindowRenderer::END_DEFAULT);
|
|
}
|
|
|
|
void nsDisplayList::DeleteAll(nsDisplayListBuilder* aBuilder) {
|
|
for (auto* item : TakeItems()) {
|
|
item->Destroy(aBuilder);
|
|
}
|
|
}
|
|
|
|
static bool IsFrameReceivingPointerEvents(nsIFrame* aFrame) {
|
|
return aFrame->Style()->PointerEvents() != StylePointerEvents::None;
|
|
}
|
|
|
|
// A list of frames, and their z depth. Used for sorting
|
|
// the results of hit testing.
|
|
struct FramesWithDepth {
|
|
explicit FramesWithDepth(float aDepth) : mDepth(aDepth) {}
|
|
|
|
bool operator<(const FramesWithDepth& aOther) const {
|
|
if (!FuzzyEqual(mDepth, aOther.mDepth, 0.1f)) {
|
|
// We want to sort so that the shallowest item (highest depth value) is
|
|
// first
|
|
return mDepth > aOther.mDepth;
|
|
}
|
|
return false;
|
|
}
|
|
bool operator==(const FramesWithDepth& aOther) const {
|
|
return this == &aOther;
|
|
}
|
|
|
|
float mDepth;
|
|
nsTArray<nsIFrame*> mFrames;
|
|
};
|
|
|
|
// Sort the frames by depth and then moves all the contained frames to the
|
|
// destination
|
|
static void FlushFramesArray(nsTArray<FramesWithDepth>& aSource,
|
|
nsTArray<nsIFrame*>* aDest) {
|
|
if (aSource.IsEmpty()) {
|
|
return;
|
|
}
|
|
aSource.StableSort();
|
|
uint32_t length = aSource.Length();
|
|
for (uint32_t i = 0; i < length; i++) {
|
|
aDest->AppendElements(std::move(aSource[i].mFrames));
|
|
}
|
|
aSource.Clear();
|
|
}
|
|
|
|
void nsDisplayList::HitTest(nsDisplayListBuilder* aBuilder, const nsRect& aRect,
|
|
nsDisplayItem::HitTestState* aState,
|
|
nsTArray<nsIFrame*>* aOutFrames) const {
|
|
nsDisplayItem* item;
|
|
|
|
if (aState->mInPreserves3D) {
|
|
// Collect leaves of the current 3D rendering context.
|
|
for (nsDisplayItem* item : *this) {
|
|
auto itemType = item->GetType();
|
|
if (itemType != DisplayItemType::TYPE_TRANSFORM ||
|
|
!static_cast<nsDisplayTransform*>(item)->IsLeafOf3DContext()) {
|
|
item->HitTest(aBuilder, aRect, aState, aOutFrames);
|
|
} else {
|
|
// One of leaves in the current 3D rendering context.
|
|
aState->mItemBuffer.AppendElement(item);
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
|
|
int32_t itemBufferStart = aState->mItemBuffer.Length();
|
|
for (nsDisplayItem* item : *this) {
|
|
aState->mItemBuffer.AppendElement(item);
|
|
}
|
|
|
|
AutoTArray<FramesWithDepth, 16> temp;
|
|
for (int32_t i = aState->mItemBuffer.Length() - 1; i >= itemBufferStart;
|
|
--i) {
|
|
// Pop element off the end of the buffer. We want to shorten the buffer
|
|
// so that recursive calls to HitTest have more buffer space.
|
|
item = aState->mItemBuffer[i];
|
|
aState->mItemBuffer.SetLength(i);
|
|
|
|
bool snap;
|
|
nsRect r = item->GetBounds(aBuilder, &snap).Intersect(aRect);
|
|
auto itemType = item->GetType();
|
|
bool same3DContext =
|
|
(itemType == DisplayItemType::TYPE_TRANSFORM &&
|
|
static_cast<nsDisplayTransform*>(item)->IsParticipating3DContext()) ||
|
|
(itemType == DisplayItemType::TYPE_PERSPECTIVE &&
|
|
item->Frame()->Extend3DContext());
|
|
if (same3DContext &&
|
|
(itemType != DisplayItemType::TYPE_TRANSFORM ||
|
|
!static_cast<nsDisplayTransform*>(item)->IsLeafOf3DContext())) {
|
|
if (!item->GetClip().MayIntersect(aRect)) {
|
|
continue;
|
|
}
|
|
AutoTArray<nsIFrame*, 1> neverUsed;
|
|
// Start gathering leaves of the 3D rendering context, and
|
|
// append leaves at the end of mItemBuffer. Leaves are
|
|
// processed at following iterations.
|
|
aState->mInPreserves3D = true;
|
|
item->HitTest(aBuilder, aRect, aState, &neverUsed);
|
|
aState->mInPreserves3D = false;
|
|
i = aState->mItemBuffer.Length();
|
|
continue;
|
|
}
|
|
if (same3DContext || item->GetClip().MayIntersect(r)) {
|
|
AutoTArray<nsIFrame*, 16> outFrames;
|
|
item->HitTest(aBuilder, aRect, aState, &outFrames);
|
|
|
|
// For 3d transforms with preserve-3d we add hit frames into the temp list
|
|
// so we can sort them later, otherwise we add them directly to the output
|
|
// list.
|
|
nsTArray<nsIFrame*>* writeFrames = aOutFrames;
|
|
if (item->GetType() == DisplayItemType::TYPE_TRANSFORM &&
|
|
static_cast<nsDisplayTransform*>(item)->IsLeafOf3DContext()) {
|
|
if (outFrames.Length()) {
|
|
nsDisplayTransform* transform =
|
|
static_cast<nsDisplayTransform*>(item);
|
|
nsPoint point = aRect.TopLeft();
|
|
// A 1x1 rect means a point, otherwise use the center of the rect
|
|
if (aRect.width != 1 || aRect.height != 1) {
|
|
point = aRect.Center();
|
|
}
|
|
temp.AppendElement(
|
|
FramesWithDepth(transform->GetHitDepthAtPoint(aBuilder, point)));
|
|
writeFrames = &temp[temp.Length() - 1].mFrames;
|
|
}
|
|
} else {
|
|
// We may have just finished a run of consecutive preserve-3d
|
|
// transforms, so flush these into the destination array before
|
|
// processing our frame list.
|
|
FlushFramesArray(temp, aOutFrames);
|
|
}
|
|
|
|
for (uint32_t j = 0; j < outFrames.Length(); j++) {
|
|
nsIFrame* f = outFrames.ElementAt(j);
|
|
// Filter out some frames depending on the type of hittest
|
|
// we are doing. For visibility tests, pass through all frames.
|
|
// For pointer tests, only pass through frames that are styled
|
|
// to receive pointer events.
|
|
if (aBuilder->HitTestIsForVisibility() ||
|
|
IsFrameReceivingPointerEvents(f)) {
|
|
writeFrames->AppendElement(f);
|
|
}
|
|
}
|
|
|
|
if (aBuilder->HitTestIsForVisibility()) {
|
|
aState->mHitOccludingItem = [&] {
|
|
if (aState->mHitOccludingItem) {
|
|
// We already hit something before.
|
|
return true;
|
|
}
|
|
if (aState->mCurrentOpacity == 1.0f &&
|
|
item->GetOpaqueRegion(aBuilder, &snap).Contains(aRect)) {
|
|
// An opaque item always occludes everything. Note that we need to
|
|
// check wrapping opacity and such as well.
|
|
return true;
|
|
}
|
|
float threshold = aBuilder->VisibilityThreshold();
|
|
if (threshold == 1.0f) {
|
|
return false;
|
|
}
|
|
float itemOpacity = [&] {
|
|
switch (item->GetType()) {
|
|
case DisplayItemType::TYPE_OPACITY:
|
|
return static_cast<nsDisplayOpacity*>(item)->GetOpacity();
|
|
case DisplayItemType::TYPE_BACKGROUND_COLOR:
|
|
return static_cast<nsDisplayBackgroundColor*>(item)
|
|
->GetOpacity();
|
|
default:
|
|
// Be conservative and assume it won't occlude other items.
|
|
return 0.0f;
|
|
}
|
|
}();
|
|
return itemOpacity * aState->mCurrentOpacity >= threshold;
|
|
}();
|
|
|
|
if (aState->mHitOccludingItem) {
|
|
// We're exiting early, so pop the remaining items off the buffer.
|
|
aState->mItemBuffer.TruncateLength(itemBufferStart);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
// Clear any remaining preserve-3d transforms.
|
|
FlushFramesArray(temp, aOutFrames);
|
|
NS_ASSERTION(aState->mItemBuffer.Length() == uint32_t(itemBufferStart),
|
|
"How did we forget to pop some elements?");
|
|
}
|
|
|
|
static nsIContent* FindContentInDocument(nsDisplayItem* aItem, Document* aDoc) {
|
|
nsIFrame* f = aItem->Frame();
|
|
while (f) {
|
|
nsPresContext* pc = f->PresContext();
|
|
if (pc->Document() == aDoc) {
|
|
return f->GetContent();
|
|
}
|
|
f = nsLayoutUtils::GetCrossDocParentFrameInProcess(
|
|
pc->PresShell()->GetRootFrame());
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
struct ZSortItem {
|
|
nsDisplayItem* item;
|
|
int32_t zIndex;
|
|
|
|
explicit ZSortItem(nsDisplayItem* aItem)
|
|
: item(aItem), zIndex(aItem->ZIndex()) {}
|
|
|
|
operator nsDisplayItem*() { return item; }
|
|
};
|
|
|
|
struct ZOrderComparator {
|
|
bool LessThan(const ZSortItem& aLeft, const ZSortItem& aRight) const {
|
|
return aLeft.zIndex < aRight.zIndex;
|
|
}
|
|
};
|
|
|
|
void nsDisplayList::SortByZOrder() { Sort<ZSortItem>(ZOrderComparator()); }
|
|
|
|
struct ContentComparator {
|
|
nsIContent* mCommonAncestor;
|
|
|
|
explicit ContentComparator(nsIContent* aCommonAncestor)
|
|
: mCommonAncestor(aCommonAncestor) {}
|
|
|
|
bool LessThan(nsDisplayItem* aLeft, nsDisplayItem* aRight) const {
|
|
// It's possible that the nsIContent for aItem1 or aItem2 is in a
|
|
// subdocument of commonAncestor, because display items for subdocuments
|
|
// have been mixed into the same list. Ensure that we're looking at content
|
|
// in commonAncestor's document.
|
|
Document* commonAncestorDoc = mCommonAncestor->OwnerDoc();
|
|
nsIContent* content1 = FindContentInDocument(aLeft, commonAncestorDoc);
|
|
nsIContent* content2 = FindContentInDocument(aRight, commonAncestorDoc);
|
|
if (!content1 || !content2) {
|
|
NS_ERROR("Document trees are mixed up!");
|
|
// Something weird going on
|
|
return true;
|
|
}
|
|
return content1 != content2 &&
|
|
nsContentUtils::CompareTreePosition<TreeKind::Flat>(
|
|
content1, content2, mCommonAncestor) < 0;
|
|
}
|
|
};
|
|
|
|
void nsDisplayList::SortByContentOrder(nsIContent* aCommonAncestor) {
|
|
Sort<nsDisplayItem*>(ContentComparator(aCommonAncestor));
|
|
}
|
|
|
|
#if !defined(DEBUG) && !defined(MOZ_DIAGNOSTIC_ASSERT_ENABLED)
|
|
static_assert(sizeof(nsDisplayItem) <= 176, "nsDisplayItem has grown");
|
|
#endif
|
|
|
|
nsDisplayItem::nsDisplayItem(nsDisplayListBuilder* aBuilder, nsIFrame* aFrame)
|
|
: nsDisplayItem(aBuilder, aFrame, aBuilder->CurrentActiveScrolledRoot()) {}
|
|
|
|
nsDisplayItem::nsDisplayItem(nsDisplayListBuilder* aBuilder, nsIFrame* aFrame,
|
|
const ActiveScrolledRoot* aActiveScrolledRoot)
|
|
: mFrame(aFrame), mActiveScrolledRoot(aActiveScrolledRoot) {
|
|
MOZ_COUNT_CTOR(nsDisplayItem);
|
|
MOZ_ASSERT(mFrame);
|
|
if (aBuilder->IsRetainingDisplayList()) {
|
|
mFrame->AddDisplayItem(this);
|
|
}
|
|
|
|
aBuilder->FindReferenceFrameFor(aFrame, &mToReferenceFrame);
|
|
NS_ASSERTION(
|
|
aBuilder->GetVisibleRect().width >= 0 || !aBuilder->IsForPainting(),
|
|
"visible rect not set");
|
|
|
|
mClipChain = aBuilder->ClipState().GetCurrentCombinedClipChain(aBuilder);
|
|
|
|
// The visible rect is for mCurrentFrame, so we have to use
|
|
// mCurrentOffsetToReferenceFrame
|
|
nsRect visible = aBuilder->GetVisibleRect() +
|
|
aBuilder->GetCurrentFrameOffsetToReferenceFrame();
|
|
SetBuildingRect(visible);
|
|
|
|
const nsStyleDisplay* disp = mFrame->StyleDisplay();
|
|
if (mFrame->BackfaceIsHidden(disp)) {
|
|
mItemFlags += ItemFlag::BackfaceHidden;
|
|
}
|
|
if (mFrame->Combines3DTransformWithAncestors()) {
|
|
mItemFlags += ItemFlag::Combines3DTransformWithAncestors;
|
|
}
|
|
}
|
|
|
|
void nsDisplayItem::SetDeletedFrame() { mItemFlags += ItemFlag::DeletedFrame; }
|
|
|
|
bool nsDisplayItem::HasDeletedFrame() const {
|
|
bool retval = mItemFlags.contains(ItemFlag::DeletedFrame) ||
|
|
(GetType() == DisplayItemType::TYPE_REMOTE &&
|
|
!static_cast<const nsDisplayRemote*>(this)->GetFrameLoader());
|
|
MOZ_ASSERT(retval || mFrame);
|
|
return retval;
|
|
}
|
|
|
|
/* static */
|
|
bool nsDisplayItem::ForceActiveLayers() {
|
|
return StaticPrefs::layers_force_active();
|
|
}
|
|
|
|
int32_t nsDisplayItem::ZIndex() const { return mFrame->ZIndex().valueOr(0); }
|
|
|
|
void nsDisplayItem::SetClipChain(const DisplayItemClipChain* aClipChain,
|
|
bool aStore) {
|
|
mClipChain = aClipChain;
|
|
}
|
|
|
|
Maybe<nsRect> nsDisplayItem::GetClipWithRespectToASR(
|
|
nsDisplayListBuilder* aBuilder, const ActiveScrolledRoot* aASR) const {
|
|
if (const DisplayItemClip* clip =
|
|
DisplayItemClipChain::ClipForASR(GetClipChain(), aASR)) {
|
|
return Some(clip->GetClipRect());
|
|
}
|
|
#ifdef DEBUG
|
|
NS_ASSERTION(false, "item should have finite clip with respect to aASR");
|
|
#endif
|
|
return Nothing();
|
|
}
|
|
|
|
const DisplayItemClip& nsDisplayItem::GetClip() const {
|
|
const DisplayItemClip* clip =
|
|
DisplayItemClipChain::ClipForASR(mClipChain, mActiveScrolledRoot);
|
|
return clip ? *clip : DisplayItemClip::NoClip();
|
|
}
|
|
|
|
void nsDisplayItem::IntersectClip(nsDisplayListBuilder* aBuilder,
|
|
const DisplayItemClipChain* aOther,
|
|
bool aStore) {
|
|
if (!aOther || mClipChain == aOther) {
|
|
return;
|
|
}
|
|
|
|
// aOther might be a reference to a clip on the stack. We need to make sure
|
|
// that CreateClipChainIntersection will allocate the actual intersected
|
|
// clip in the builder's arena, so for the mClipChain == nullptr case,
|
|
// we supply nullptr as the common ancestor so that
|
|
// CreateClipChainIntersection clones the whole chain.
|
|
const DisplayItemClipChain* ancestorClip =
|
|
mClipChain ? FindCommonAncestorClipForIntersection(mClipChain, aOther)
|
|
: nullptr;
|
|
|
|
SetClipChain(
|
|
aBuilder->CreateClipChainIntersection(ancestorClip, mClipChain, aOther),
|
|
aStore);
|
|
}
|
|
|
|
nsRect nsDisplayItem::GetClippedBounds(nsDisplayListBuilder* aBuilder) const {
|
|
bool snap;
|
|
nsRect r = GetBounds(aBuilder, &snap);
|
|
return GetClip().ApplyNonRoundedIntersection(r);
|
|
}
|
|
|
|
nsDisplayContainer::nsDisplayContainer(
|
|
nsDisplayListBuilder* aBuilder, nsIFrame* aFrame,
|
|
const ActiveScrolledRoot* aActiveScrolledRoot, nsDisplayList* aList)
|
|
: nsDisplayItem(aBuilder, aFrame, aActiveScrolledRoot),
|
|
mChildren(aBuilder) {
|
|
MOZ_COUNT_CTOR(nsDisplayContainer);
|
|
mChildren.AppendToTop(aList);
|
|
UpdateBounds(aBuilder);
|
|
|
|
// Clear and store the clip chain set by nsDisplayItem constructor.
|
|
nsDisplayItem::SetClipChain(nullptr, true);
|
|
}
|
|
|
|
nsRect nsDisplayItem::GetPaintRect(nsDisplayListBuilder* aBuilder,
|
|
gfxContext* aCtx) {
|
|
bool dummy;
|
|
nsRect result = GetBounds(aBuilder, &dummy);
|
|
if (aCtx) {
|
|
result.IntersectRect(result,
|
|
nsLayoutUtils::RoundGfxRectToAppRect(
|
|
aCtx->GetClipExtents(),
|
|
mFrame->PresContext()->AppUnitsPerDevPixel()));
|
|
}
|
|
return result;
|
|
}
|
|
|
|
bool nsDisplayContainer::CreateWebRenderCommands(
|
|
wr::DisplayListBuilder& aBuilder, wr::IpcResourceUpdateQueue& aResources,
|
|
const StackingContextHelper& aSc, RenderRootStateManager* aManager,
|
|
nsDisplayListBuilder* aDisplayListBuilder) {
|
|
aManager->CommandBuilder().CreateWebRenderCommandsFromDisplayList(
|
|
GetChildren(), this, aDisplayListBuilder, aSc, aBuilder, aResources,
|
|
false);
|
|
return true;
|
|
}
|
|
|
|
nsRect nsDisplayContainer::GetBounds(nsDisplayListBuilder* aBuilder,
|
|
bool* aSnap) const {
|
|
*aSnap = false;
|
|
return mBounds;
|
|
}
|
|
|
|
nsRect nsDisplayContainer::GetComponentAlphaBounds(
|
|
nsDisplayListBuilder* aBuilder) const {
|
|
return mChildren.GetComponentAlphaBounds(aBuilder);
|
|
}
|
|
|
|
static nsRegion GetOpaqueRegion(nsDisplayListBuilder* aBuilder,
|
|
nsDisplayList* aList,
|
|
const nsRect& aListBounds) {
|
|
return aList->GetOpaqueRegion(aBuilder);
|
|
}
|
|
|
|
nsRegion nsDisplayContainer::GetOpaqueRegion(nsDisplayListBuilder* aBuilder,
|
|
bool* aSnap) const {
|
|
return ::mozilla::GetOpaqueRegion(aBuilder, GetChildren(),
|
|
GetBounds(aBuilder, aSnap));
|
|
}
|
|
|
|
Maybe<nsRect> nsDisplayContainer::GetClipWithRespectToASR(
|
|
nsDisplayListBuilder* aBuilder, const ActiveScrolledRoot* aASR) const {
|
|
// Our children should have finite bounds with respect to |aASR|.
|
|
if (aASR == mActiveScrolledRoot) {
|
|
return Some(mBounds);
|
|
}
|
|
|
|
return Some(mChildren.GetClippedBoundsWithRespectToASR(aBuilder, aASR));
|
|
}
|
|
|
|
void nsDisplayContainer::HitTest(nsDisplayListBuilder* aBuilder,
|
|
const nsRect& aRect, HitTestState* aState,
|
|
nsTArray<nsIFrame*>* aOutFrames) {
|
|
mChildren.HitTest(aBuilder, aRect, aState, aOutFrames);
|
|
}
|
|
|
|
void nsDisplayContainer::UpdateBounds(nsDisplayListBuilder* aBuilder) {
|
|
// Container item bounds are expected to be clipped.
|
|
mBounds =
|
|
mChildren.GetClippedBoundsWithRespectToASR(aBuilder, mActiveScrolledRoot);
|
|
}
|
|
|
|
nsRect nsDisplaySolidColor::GetBounds(nsDisplayListBuilder* aBuilder,
|
|
bool* aSnap) const {
|
|
*aSnap = true;
|
|
return mBounds;
|
|
}
|
|
|
|
void nsDisplaySolidColor::Paint(nsDisplayListBuilder* aBuilder,
|
|
gfxContext* aCtx) {
|
|
int32_t appUnitsPerDevPixel = mFrame->PresContext()->AppUnitsPerDevPixel();
|
|
DrawTarget* drawTarget = aCtx->GetDrawTarget();
|
|
Rect rect = NSRectToSnappedRect(GetPaintRect(aBuilder, aCtx),
|
|
appUnitsPerDevPixel, *drawTarget);
|
|
drawTarget->FillRect(rect, ColorPattern(ToDeviceColor(mColor)));
|
|
}
|
|
|
|
void nsDisplaySolidColor::WriteDebugInfo(std::stringstream& aStream) {
|
|
aStream << " (rgba " << (int)NS_GET_R(mColor) << "," << (int)NS_GET_G(mColor)
|
|
<< "," << (int)NS_GET_B(mColor) << "," << (int)NS_GET_A(mColor)
|
|
<< ")";
|
|
}
|
|
|
|
bool nsDisplaySolidColor::CreateWebRenderCommands(
|
|
wr::DisplayListBuilder& aBuilder, wr::IpcResourceUpdateQueue& aResources,
|
|
const StackingContextHelper& aSc, RenderRootStateManager* aManager,
|
|
nsDisplayListBuilder* aDisplayListBuilder) {
|
|
LayoutDeviceRect bounds = LayoutDeviceRect::FromAppUnits(
|
|
mBounds, mFrame->PresContext()->AppUnitsPerDevPixel());
|
|
wr::LayoutRect r = wr::ToLayoutRect(bounds);
|
|
aBuilder.PushRect(r, r, !BackfaceIsHidden(), false, mIsCheckerboardBackground,
|
|
wr::ToColorF(ToDeviceColor(mColor)));
|
|
|
|
return true;
|
|
}
|
|
|
|
nsRect nsDisplaySolidColorRegion::GetBounds(nsDisplayListBuilder* aBuilder,
|
|
bool* aSnap) const {
|
|
*aSnap = true;
|
|
return mRegion.GetBounds();
|
|
}
|
|
|
|
void nsDisplaySolidColorRegion::Paint(nsDisplayListBuilder* aBuilder,
|
|
gfxContext* aCtx) {
|
|
int32_t appUnitsPerDevPixel = mFrame->PresContext()->AppUnitsPerDevPixel();
|
|
DrawTarget* drawTarget = aCtx->GetDrawTarget();
|
|
ColorPattern color(ToDeviceColor(mColor));
|
|
for (auto iter = mRegion.RectIter(); !iter.Done(); iter.Next()) {
|
|
Rect rect =
|
|
NSRectToSnappedRect(iter.Get(), appUnitsPerDevPixel, *drawTarget);
|
|
drawTarget->FillRect(rect, color);
|
|
}
|
|
}
|
|
|
|
void nsDisplaySolidColorRegion::WriteDebugInfo(std::stringstream& aStream) {
|
|
aStream << " (rgba " << int(mColor.r * 255) << "," << int(mColor.g * 255)
|
|
<< "," << int(mColor.b * 255) << "," << mColor.a << ")";
|
|
}
|
|
|
|
bool nsDisplaySolidColorRegion::CreateWebRenderCommands(
|
|
wr::DisplayListBuilder& aBuilder, wr::IpcResourceUpdateQueue& aResources,
|
|
const StackingContextHelper& aSc, RenderRootStateManager* aManager,
|
|
nsDisplayListBuilder* aDisplayListBuilder) {
|
|
for (auto iter = mRegion.RectIter(); !iter.Done(); iter.Next()) {
|
|
nsRect rect = iter.Get();
|
|
LayoutDeviceRect layerRects = LayoutDeviceRect::FromAppUnits(
|
|
rect, mFrame->PresContext()->AppUnitsPerDevPixel());
|
|
wr::LayoutRect r = wr::ToLayoutRect(layerRects);
|
|
aBuilder.PushRect(r, r, !BackfaceIsHidden(), false, false,
|
|
wr::ToColorF(ToDeviceColor(mColor)));
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static void RegisterThemeGeometry(nsDisplayListBuilder* aBuilder,
|
|
nsDisplayItem* aItem, nsIFrame* aFrame,
|
|
nsITheme::ThemeGeometryType aType) {
|
|
if (aBuilder->IsInChromeDocumentOrPopup()) {
|
|
nsIFrame* displayRoot = nsLayoutUtils::GetDisplayRootFrame(aFrame);
|
|
bool preservesAxisAlignedRectangles = false;
|
|
nsRect borderBox = nsLayoutUtils::TransformFrameRectToAncestor(
|
|
aFrame, aFrame->GetRectRelativeToSelf(), displayRoot,
|
|
&preservesAxisAlignedRectangles);
|
|
if (preservesAxisAlignedRectangles) {
|
|
aBuilder->RegisterThemeGeometry(
|
|
aType, aItem,
|
|
LayoutDeviceIntRect::FromUnknownRect(borderBox.ToNearestPixels(
|
|
aFrame->PresContext()->AppUnitsPerDevPixel())));
|
|
}
|
|
}
|
|
}
|
|
|
|
// Return the bounds of the viewport relative to |aFrame|'s reference frame.
|
|
// Returns Nothing() if transforming into |aFrame|'s coordinate space fails.
|
|
static Maybe<nsRect> GetViewportRectRelativeToReferenceFrame(
|
|
nsDisplayListBuilder* aBuilder, nsIFrame* aFrame) {
|
|
nsIFrame* rootFrame = aFrame->PresShell()->GetRootFrame();
|
|
nsRect rootRect = rootFrame->GetRectRelativeToSelf();
|
|
if (nsLayoutUtils::TransformRect(rootFrame, aFrame, rootRect) ==
|
|
nsLayoutUtils::TRANSFORM_SUCCEEDED) {
|
|
return Some(rootRect + aBuilder->ToReferenceFrame(aFrame));
|
|
}
|
|
return Nothing();
|
|
}
|
|
|
|
/* static */ nsDisplayBackgroundImage::InitData
|
|
nsDisplayBackgroundImage::GetInitData(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame, uint16_t aLayer,
|
|
const nsRect& aBackgroundRect,
|
|
const ComputedStyle* aBackgroundStyle) {
|
|
nsPresContext* presContext = aFrame->PresContext();
|
|
uint32_t flags = aBuilder->GetBackgroundPaintFlags();
|
|
const nsStyleImageLayers::Layer& layer =
|
|
aBackgroundStyle->StyleBackground()->mImage.mLayers[aLayer];
|
|
|
|
bool isTransformedFixed;
|
|
nsBackgroundLayerState state = nsCSSRendering::PrepareImageLayer(
|
|
presContext, aFrame, flags, aBackgroundRect, aBackgroundRect, layer,
|
|
&isTransformedFixed);
|
|
|
|
// background-attachment:fixed is treated as background-attachment:scroll
|
|
// if it's affected by a transform.
|
|
// See https://www.w3.org/Bugs/Public/show_bug.cgi?id=17521.
|
|
bool shouldTreatAsFixed =
|
|
layer.mAttachment == StyleImageLayerAttachment::Fixed &&
|
|
!isTransformedFixed;
|
|
|
|
bool shouldFixToViewport = shouldTreatAsFixed && !layer.mImage.IsNone();
|
|
bool isRasterImage = state.mImageRenderer.IsRasterImage();
|
|
nsCOMPtr<imgIContainer> image;
|
|
if (isRasterImage) {
|
|
image = state.mImageRenderer.GetImage();
|
|
}
|
|
return InitData{aBuilder, aBackgroundStyle, image,
|
|
aBackgroundRect, state.mFillArea, state.mDestArea,
|
|
aLayer, isRasterImage, shouldFixToViewport};
|
|
}
|
|
|
|
nsDisplayBackgroundImage::nsDisplayBackgroundImage(
|
|
nsDisplayListBuilder* aBuilder, nsIFrame* aFrame, const InitData& aInitData,
|
|
nsIFrame* aFrameForBounds)
|
|
: nsPaintedDisplayItem(aBuilder, aFrame),
|
|
mBackgroundStyle(aInitData.backgroundStyle),
|
|
mImage(aInitData.image),
|
|
mDependentFrame(nullptr),
|
|
mBackgroundRect(aInitData.backgroundRect),
|
|
mFillRect(aInitData.fillArea),
|
|
mDestRect(aInitData.destArea),
|
|
mLayer(aInitData.layer),
|
|
mIsRasterImage(aInitData.isRasterImage),
|
|
mShouldFixToViewport(aInitData.shouldFixToViewport) {
|
|
MOZ_COUNT_CTOR(nsDisplayBackgroundImage);
|
|
#ifdef DEBUG
|
|
if (mBackgroundStyle && mBackgroundStyle != mFrame->Style()) {
|
|
// If this changes, then you also need to adjust css::ImageLoader to
|
|
// invalidate mFrame as needed.
|
|
MOZ_ASSERT(mFrame->IsCanvasFrame() || mFrame->IsTablePart());
|
|
}
|
|
#endif
|
|
|
|
mBounds = GetBoundsInternal(aInitData.builder, aFrameForBounds);
|
|
if (mShouldFixToViewport) {
|
|
// Expand the item's visible rect to cover the entire bounds, limited to the
|
|
// viewport rect. This is necessary because the background's clip can move
|
|
// asynchronously.
|
|
if (Maybe<nsRect> viewportRect = GetViewportRectRelativeToReferenceFrame(
|
|
aInitData.builder, mFrame)) {
|
|
SetBuildingRect(mBounds.Intersect(*viewportRect));
|
|
}
|
|
}
|
|
}
|
|
|
|
nsDisplayBackgroundImage::~nsDisplayBackgroundImage() {
|
|
MOZ_COUNT_DTOR(nsDisplayBackgroundImage);
|
|
if (mDependentFrame) {
|
|
mDependentFrame->RemoveDisplayItem(this);
|
|
}
|
|
}
|
|
|
|
static void SetBackgroundClipRegion(
|
|
DisplayListClipState::AutoSaveRestore& aClipState, nsIFrame* aFrame,
|
|
const nsStyleImageLayers::Layer& aLayer, const nsRect& aBackgroundRect,
|
|
bool aWillPaintBorder) {
|
|
nsCSSRendering::ImageLayerClipState clip;
|
|
nsCSSRendering::GetImageLayerClip(
|
|
aLayer, aFrame, *aFrame->StyleBorder(), aBackgroundRect, aBackgroundRect,
|
|
aWillPaintBorder, aFrame->PresContext()->AppUnitsPerDevPixel(), &clip);
|
|
|
|
if (clip.mHasAdditionalBGClipArea) {
|
|
aClipState.ClipContentDescendants(
|
|
clip.mAdditionalBGClipArea, clip.mBGClipArea,
|
|
clip.mHasRoundedCorners ? clip.mRadii : nullptr);
|
|
} else {
|
|
aClipState.ClipContentDescendants(
|
|
clip.mBGClipArea, clip.mHasRoundedCorners ? clip.mRadii : nullptr);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* This is used for the find bar highlighter overlay. It's only accessible
|
|
* through the AnonymousContent API, so it's not exposed to general web pages.
|
|
*/
|
|
static bool SpecialCutoutRegionCase(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame,
|
|
const nsRect& aBackgroundRect,
|
|
nsDisplayList* aList, nscolor aColor) {
|
|
nsIContent* content = aFrame->GetContent();
|
|
if (!content) {
|
|
return false;
|
|
}
|
|
|
|
void* cutoutRegion = content->GetProperty(nsGkAtoms::cutoutregion);
|
|
if (!cutoutRegion) {
|
|
return false;
|
|
}
|
|
|
|
if (NS_GET_A(aColor) == 0) {
|
|
return true;
|
|
}
|
|
|
|
nsRegion region;
|
|
region.Sub(aBackgroundRect, *static_cast<nsRegion*>(cutoutRegion));
|
|
region.MoveBy(aBuilder->ToReferenceFrame(aFrame));
|
|
aList->AppendNewToTop<nsDisplaySolidColorRegion>(aBuilder, aFrame, region,
|
|
aColor);
|
|
|
|
return true;
|
|
}
|
|
|
|
enum class TableType : uint8_t {
|
|
Table,
|
|
TableCol,
|
|
TableColGroup,
|
|
TableRow,
|
|
TableRowGroup,
|
|
TableCell,
|
|
|
|
MAX,
|
|
};
|
|
|
|
enum class TableTypeBits : uint8_t { Count = 3 };
|
|
|
|
static_assert(static_cast<uint8_t>(TableType::MAX) <
|
|
(1 << (static_cast<uint8_t>(TableTypeBits::Count) + 1)),
|
|
"TableType cannot fit with TableTypeBits::Count");
|
|
TableType GetTableTypeFromFrame(nsIFrame* aFrame);
|
|
|
|
static uint16_t CalculateTablePerFrameKey(const uint16_t aIndex,
|
|
const TableType aType) {
|
|
const uint32_t key = (aIndex << static_cast<uint8_t>(TableTypeBits::Count)) |
|
|
static_cast<uint8_t>(aType);
|
|
|
|
return static_cast<uint16_t>(key);
|
|
}
|
|
|
|
static nsDisplayBackgroundImage* CreateBackgroundImage(
|
|
nsDisplayListBuilder* aBuilder, nsIFrame* aFrame, nsIFrame* aSecondaryFrame,
|
|
const nsDisplayBackgroundImage::InitData& aBgData) {
|
|
const auto index = aBgData.layer;
|
|
|
|
if (aSecondaryFrame) {
|
|
const auto tableType = GetTableTypeFromFrame(aFrame);
|
|
const uint16_t tableItemIndex = CalculateTablePerFrameKey(index, tableType);
|
|
|
|
return MakeDisplayItemWithIndex<nsDisplayTableBackgroundImage>(
|
|
aBuilder, aSecondaryFrame, tableItemIndex, aBgData, aFrame);
|
|
}
|
|
|
|
return MakeDisplayItemWithIndex<nsDisplayBackgroundImage>(aBuilder, aFrame,
|
|
index, aBgData);
|
|
}
|
|
|
|
static nsDisplayThemedBackground* CreateThemedBackground(
|
|
nsDisplayListBuilder* aBuilder, nsIFrame* aFrame, nsIFrame* aSecondaryFrame,
|
|
const nsRect& aBgRect) {
|
|
if (aSecondaryFrame) {
|
|
const uint16_t index = static_cast<uint16_t>(GetTableTypeFromFrame(aFrame));
|
|
return MakeDisplayItemWithIndex<nsDisplayTableThemedBackground>(
|
|
aBuilder, aSecondaryFrame, index, aBgRect, aFrame);
|
|
}
|
|
|
|
return MakeDisplayItem<nsDisplayThemedBackground>(aBuilder, aFrame, aBgRect);
|
|
}
|
|
|
|
static nsDisplayBackgroundColor* CreateBackgroundColor(
|
|
nsDisplayListBuilder* aBuilder, nsIFrame* aFrame, nsIFrame* aSecondaryFrame,
|
|
nsRect& aBgRect, const ComputedStyle* aBgSC, nscolor aColor) {
|
|
if (aSecondaryFrame) {
|
|
const uint16_t index = static_cast<uint16_t>(GetTableTypeFromFrame(aFrame));
|
|
return MakeDisplayItemWithIndex<nsDisplayTableBackgroundColor>(
|
|
aBuilder, aSecondaryFrame, index, aBgRect, aBgSC, aColor, aFrame);
|
|
}
|
|
|
|
return MakeDisplayItem<nsDisplayBackgroundColor>(aBuilder, aFrame, aBgRect,
|
|
aBgSC, aColor);
|
|
}
|
|
|
|
static void DealWithWindowsAppearanceHacks(nsIFrame* aFrame,
|
|
nsDisplayListBuilder* aBuilder) {
|
|
const auto& disp = *aFrame->StyleDisplay();
|
|
|
|
// We use default appearance rather than effective appearance because we want
|
|
// to handle when titlebar buttons that have appearance: none.
|
|
const auto defaultAppearance = disp.mDefaultAppearance;
|
|
if (MOZ_LIKELY(defaultAppearance == StyleAppearance::None)) {
|
|
return;
|
|
}
|
|
|
|
if (auto type = disp.GetWindowButtonType()) {
|
|
if (auto* widget = aFrame->GetNearestWidget()) {
|
|
auto rect = LayoutDevicePixel::FromAppUnitsToNearest(
|
|
nsRect(aBuilder->ToReferenceFrame(aFrame), aFrame->GetSize()),
|
|
aFrame->PresContext()->AppUnitsPerDevPixel());
|
|
widget->SetWindowButtonRect(*type, rect);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*static*/
|
|
AppendedBackgroundType nsDisplayBackgroundImage::AppendBackgroundItemsToTop(
|
|
nsDisplayListBuilder* aBuilder, nsIFrame* aFrame,
|
|
const nsRect& aBackgroundRect, nsDisplayList* aList,
|
|
bool aAllowWillPaintBorderOptimization, const nsRect& aBackgroundOriginRect,
|
|
nsIFrame* aSecondaryReferenceFrame,
|
|
Maybe<nsDisplayListBuilder::AutoBuildingDisplayList>*
|
|
aAutoBuildingDisplayList) {
|
|
MOZ_ASSERT(!aFrame->IsCanvasFrame(),
|
|
"We don't expect propagated canvas backgrounds here");
|
|
#ifdef DEBUG
|
|
{
|
|
nsIFrame* bgFrame = nsCSSRendering::FindBackgroundFrame(aFrame);
|
|
MOZ_ASSERT(
|
|
!bgFrame || bgFrame == aFrame,
|
|
"Should only suppress backgrounds, never propagate to another frame");
|
|
}
|
|
#endif
|
|
|
|
DealWithWindowsAppearanceHacks(aFrame, aBuilder);
|
|
|
|
const bool isThemed = aFrame->IsThemed();
|
|
|
|
const ComputedStyle* bgSC = aFrame->Style();
|
|
const nsStyleBackground* bg = bgSC->StyleBackground();
|
|
const bool needsBackgroundColor =
|
|
aBuilder->IsForEventDelivery() ||
|
|
(EffectCompositor::HasAnimationsForCompositor(
|
|
aFrame, DisplayItemType::TYPE_BACKGROUND_COLOR) &&
|
|
!isThemed);
|
|
if (!needsBackgroundColor && !isThemed && bg->IsTransparent(bgSC)) {
|
|
return AppendedBackgroundType::None;
|
|
}
|
|
|
|
bool drawBackgroundColor = false;
|
|
bool drawBackgroundImage = false;
|
|
nscolor color = NS_RGBA(0, 0, 0, 0);
|
|
// Don't get background color / images if we propagated our background to the
|
|
// canvas (that is, if FindBackgroundFrame is null). But don't early return
|
|
// yet, since we might still need a background-color item for hit-testing.
|
|
if (!isThemed && nsCSSRendering::FindBackgroundFrame(aFrame)) {
|
|
color = nsCSSRendering::DetermineBackgroundColor(
|
|
aFrame->PresContext(), bgSC, aFrame, drawBackgroundImage,
|
|
drawBackgroundColor);
|
|
}
|
|
|
|
if (SpecialCutoutRegionCase(aBuilder, aFrame, aBackgroundRect, aList,
|
|
color)) {
|
|
return AppendedBackgroundType::None;
|
|
}
|
|
|
|
const nsStyleBorder& border = *aFrame->StyleBorder();
|
|
const bool willPaintBorder =
|
|
aAllowWillPaintBorderOptimization && !isThemed &&
|
|
!aFrame->StyleEffects()->HasBoxShadowWithInset(true) &&
|
|
border.HasBorder();
|
|
|
|
auto EnsureBuildingDisplayList = [&] {
|
|
if (!aAutoBuildingDisplayList || *aAutoBuildingDisplayList) {
|
|
return;
|
|
}
|
|
nsPoint offset = aBuilder->GetCurrentFrame()->GetOffsetTo(aFrame);
|
|
aAutoBuildingDisplayList->emplace(aBuilder, aFrame,
|
|
aBuilder->GetVisibleRect() + offset,
|
|
aBuilder->GetDirtyRect() + offset);
|
|
};
|
|
|
|
// An auxiliary list is necessary in case we have background blending; if that
|
|
// is the case, background items need to be wrapped by a blend container to
|
|
// isolate blending to the background
|
|
nsDisplayList bgItemList(aBuilder);
|
|
// Even if we don't actually have a background color to paint, we may still
|
|
// need to create an item for hit testing and we still need to create an item
|
|
// for background-color animations.
|
|
if ((drawBackgroundColor && color != NS_RGBA(0, 0, 0, 0)) ||
|
|
needsBackgroundColor) {
|
|
EnsureBuildingDisplayList();
|
|
Maybe<DisplayListClipState::AutoSaveRestore> clipState;
|
|
nsRect bgColorRect = aBackgroundRect;
|
|
if (!isThemed && !aBuilder->IsForEventDelivery()) {
|
|
// Disable the will-paint-border optimization for background
|
|
// colors with no border-radius. Enabling it for background colors
|
|
// doesn't help much (there are no tiling issues) and clipping the
|
|
// background breaks detection of the element's border-box being
|
|
// opaque. For nonzero border-radius we still need it because we
|
|
// want to inset the background if possible to avoid antialiasing
|
|
// artifacts along the rounded corners.
|
|
const bool useWillPaintBorderOptimization =
|
|
willPaintBorder &&
|
|
nsLayoutUtils::HasNonZeroCorner(border.mBorderRadius);
|
|
|
|
nsCSSRendering::ImageLayerClipState clip;
|
|
nsCSSRendering::GetImageLayerClip(
|
|
bg->BottomLayer(), aFrame, border, aBackgroundRect, aBackgroundRect,
|
|
useWillPaintBorderOptimization,
|
|
aFrame->PresContext()->AppUnitsPerDevPixel(), &clip);
|
|
|
|
bgColorRect = bgColorRect.Intersect(clip.mBGClipArea);
|
|
if (clip.mHasAdditionalBGClipArea) {
|
|
bgColorRect = bgColorRect.Intersect(clip.mAdditionalBGClipArea);
|
|
}
|
|
if (clip.mHasRoundedCorners) {
|
|
clipState.emplace(aBuilder);
|
|
clipState->ClipContentDescendants(clip.mBGClipArea, clip.mRadii);
|
|
}
|
|
}
|
|
|
|
nsDisplayBackgroundColor* bgItem = CreateBackgroundColor(
|
|
aBuilder, aFrame, aSecondaryReferenceFrame, bgColorRect, bgSC,
|
|
drawBackgroundColor ? color : NS_RGBA(0, 0, 0, 0));
|
|
|
|
if (bgItem) {
|
|
bgItemList.AppendToTop(bgItem);
|
|
}
|
|
}
|
|
|
|
if (isThemed) {
|
|
nsDisplayThemedBackground* bgItem = CreateThemedBackground(
|
|
aBuilder, aFrame, aSecondaryReferenceFrame, aBackgroundRect);
|
|
|
|
if (bgItem) {
|
|
bgItem->Init(aBuilder);
|
|
bgItemList.AppendToTop(bgItem);
|
|
}
|
|
|
|
if (!bgItemList.IsEmpty()) {
|
|
aList->AppendToTop(&bgItemList);
|
|
return AppendedBackgroundType::ThemedBackground;
|
|
}
|
|
|
|
return AppendedBackgroundType::None;
|
|
}
|
|
|
|
if (!drawBackgroundImage) {
|
|
if (!bgItemList.IsEmpty()) {
|
|
aList->AppendToTop(&bgItemList);
|
|
return AppendedBackgroundType::Background;
|
|
}
|
|
|
|
return AppendedBackgroundType::None;
|
|
}
|
|
|
|
const ActiveScrolledRoot* asr = aBuilder->CurrentActiveScrolledRoot();
|
|
|
|
bool needBlendContainer = false;
|
|
const nsRect& bgOriginRect =
|
|
aBackgroundOriginRect.IsEmpty() ? aBackgroundRect : aBackgroundOriginRect;
|
|
|
|
// Passing bg == nullptr in this macro will result in one iteration with
|
|
// i = 0.
|
|
NS_FOR_VISIBLE_IMAGE_LAYERS_BACK_TO_FRONT(i, bg->mImage) {
|
|
if (bg->mImage.mLayers[i].mImage.IsNone()) {
|
|
continue;
|
|
}
|
|
|
|
EnsureBuildingDisplayList();
|
|
|
|
if (bg->mImage.mLayers[i].mBlendMode != StyleBlend::Normal) {
|
|
needBlendContainer = true;
|
|
}
|
|
|
|
DisplayListClipState::AutoSaveRestore clipState(aBuilder);
|
|
if (!aBuilder->IsForEventDelivery()) {
|
|
const nsStyleImageLayers::Layer& layer = bg->mImage.mLayers[i];
|
|
SetBackgroundClipRegion(clipState, aFrame, layer, aBackgroundRect,
|
|
willPaintBorder);
|
|
}
|
|
|
|
nsDisplayList thisItemList(aBuilder);
|
|
nsDisplayBackgroundImage::InitData bgData =
|
|
nsDisplayBackgroundImage::GetInitData(aBuilder, aFrame, i, bgOriginRect,
|
|
bgSC);
|
|
|
|
if (bgData.shouldFixToViewport) {
|
|
auto* displayData = aBuilder->GetCurrentFixedBackgroundDisplayData();
|
|
nsDisplayListBuilder::AutoBuildingDisplayList buildingDisplayList(
|
|
aBuilder, aFrame, aBuilder->GetVisibleRect(),
|
|
aBuilder->GetDirtyRect());
|
|
|
|
nsDisplayListBuilder::AutoCurrentActiveScrolledRootSetter asrSetter(
|
|
aBuilder);
|
|
if (displayData) {
|
|
asrSetter.SetCurrentActiveScrolledRoot(
|
|
displayData->mContainingBlockActiveScrolledRoot);
|
|
asrSetter.SetCurrentScrollParentId(displayData->mScrollParentId);
|
|
if (nsLayoutUtils::UsesAsyncScrolling(aFrame)) {
|
|
// Override the dirty rect on the builder to be the dirty rect of
|
|
// the viewport.
|
|
// displayData->mDirtyRect is relative to the presshell's viewport
|
|
// frame (the root frame), and we need it to be relative to aFrame.
|
|
nsIFrame* rootFrame =
|
|
aBuilder->CurrentPresShellState()->mPresShell->GetRootFrame();
|
|
// There cannot be any transforms between aFrame and rootFrame
|
|
// because then bgData.shouldFixToViewport would have been false.
|
|
nsRect visibleRect =
|
|
displayData->mVisibleRect + aFrame->GetOffsetTo(rootFrame);
|
|
aBuilder->SetVisibleRect(visibleRect);
|
|
nsRect dirtyRect =
|
|
displayData->mDirtyRect + aFrame->GetOffsetTo(rootFrame);
|
|
aBuilder->SetDirtyRect(dirtyRect);
|
|
}
|
|
}
|
|
|
|
nsDisplayBackgroundImage* bgItem = nullptr;
|
|
{
|
|
// The clip is captured by the nsDisplayFixedPosition, so clear the
|
|
// clip for the nsDisplayBackgroundImage inside.
|
|
DisplayListClipState::AutoSaveRestore bgImageClip(aBuilder);
|
|
bgImageClip.Clear();
|
|
bgItem = CreateBackgroundImage(aBuilder, aFrame,
|
|
aSecondaryReferenceFrame, bgData);
|
|
}
|
|
if (bgItem) {
|
|
thisItemList.AppendToTop(
|
|
nsDisplayFixedPosition::CreateForFixedBackground(
|
|
aBuilder, aFrame, aSecondaryReferenceFrame, bgItem, i, asr));
|
|
}
|
|
} else { // bgData.shouldFixToViewport == false
|
|
nsDisplayBackgroundImage* bgItem = CreateBackgroundImage(
|
|
aBuilder, aFrame, aSecondaryReferenceFrame, bgData);
|
|
if (bgItem) {
|
|
thisItemList.AppendToTop(bgItem);
|
|
}
|
|
}
|
|
|
|
if (bg->mImage.mLayers[i].mBlendMode != StyleBlend::Normal) {
|
|
// asr is scrolled. Even if we wrap a fixed background layer, that's
|
|
// fine, because the item will have a scrolled clip that limits the
|
|
// item with respect to asr.
|
|
if (aSecondaryReferenceFrame) {
|
|
const auto tableType = GetTableTypeFromFrame(aFrame);
|
|
const uint16_t index = CalculateTablePerFrameKey(i + 1, tableType);
|
|
|
|
thisItemList.AppendNewToTopWithIndex<nsDisplayTableBlendMode>(
|
|
aBuilder, aSecondaryReferenceFrame, index, &thisItemList,
|
|
bg->mImage.mLayers[i].mBlendMode, asr, aFrame, true);
|
|
} else {
|
|
thisItemList.AppendNewToTopWithIndex<nsDisplayBlendMode>(
|
|
aBuilder, aFrame, i + 1, &thisItemList,
|
|
bg->mImage.mLayers[i].mBlendMode, asr, true);
|
|
}
|
|
}
|
|
bgItemList.AppendToTop(&thisItemList);
|
|
}
|
|
|
|
if (needBlendContainer) {
|
|
bgItemList.AppendToTop(
|
|
nsDisplayBlendContainer::CreateForBackgroundBlendMode(
|
|
aBuilder, aFrame, aSecondaryReferenceFrame, &bgItemList, asr));
|
|
}
|
|
|
|
if (!bgItemList.IsEmpty()) {
|
|
aList->AppendToTop(&bgItemList);
|
|
return AppendedBackgroundType::Background;
|
|
}
|
|
|
|
return AppendedBackgroundType::None;
|
|
}
|
|
|
|
// Check that the rounded border of aFrame, added to aToReferenceFrame,
|
|
// intersects aRect. Assumes that the unrounded border has already
|
|
// been checked for intersection.
|
|
static bool RoundedBorderIntersectsRect(nsIFrame* aFrame,
|
|
const nsPoint& aFrameToReferenceFrame,
|
|
const nsRect& aTestRect) {
|
|
if (!nsRect(aFrameToReferenceFrame, aFrame->GetSize())
|
|
.Intersects(aTestRect)) {
|
|
return false;
|
|
}
|
|
|
|
nscoord radii[8];
|
|
return !aFrame->GetBorderRadii(radii) ||
|
|
nsLayoutUtils::RoundedRectIntersectsRect(
|
|
nsRect(aFrameToReferenceFrame, aFrame->GetSize()), radii,
|
|
aTestRect);
|
|
}
|
|
|
|
// Returns TRUE if aContainedRect is guaranteed to be contained in
|
|
// the rounded rect defined by aRoundedRect and aRadii. Complex cases are
|
|
// handled conservatively by returning FALSE in some situations where
|
|
// a more thorough analysis could return TRUE.
|
|
//
|
|
// See also RoundedRectIntersectsRect.
|
|
static bool RoundedRectContainsRect(const nsRect& aRoundedRect,
|
|
const nscoord aRadii[8],
|
|
const nsRect& aContainedRect) {
|
|
nsRegion rgn = nsLayoutUtils::RoundedRectIntersectRect(aRoundedRect, aRadii,
|
|
aContainedRect);
|
|
return rgn.Contains(aContainedRect);
|
|
}
|
|
|
|
bool nsDisplayBackgroundImage::CanApplyOpacity(
|
|
WebRenderLayerManager* aManager, nsDisplayListBuilder* aBuilder) const {
|
|
return CanBuildWebRenderDisplayItems(aManager, aBuilder);
|
|
}
|
|
|
|
bool nsDisplayBackgroundImage::CanBuildWebRenderDisplayItems(
|
|
WebRenderLayerManager* aManager, nsDisplayListBuilder* aBuilder) const {
|
|
return mBackgroundStyle->StyleBackground()->mImage.mLayers[mLayer].mClip !=
|
|
StyleGeometryBox::Text &&
|
|
nsCSSRendering::CanBuildWebRenderDisplayItemsForStyleImageLayer(
|
|
aManager, *StyleFrame()->PresContext(), StyleFrame(),
|
|
mBackgroundStyle->StyleBackground(), mLayer,
|
|
aBuilder->GetBackgroundPaintFlags());
|
|
}
|
|
|
|
bool nsDisplayBackgroundImage::CreateWebRenderCommands(
|
|
wr::DisplayListBuilder& aBuilder, wr::IpcResourceUpdateQueue& aResources,
|
|
const StackingContextHelper& aSc, RenderRootStateManager* aManager,
|
|
nsDisplayListBuilder* aDisplayListBuilder) {
|
|
if (!CanBuildWebRenderDisplayItems(aManager->LayerManager(),
|
|
aDisplayListBuilder)) {
|
|
return false;
|
|
}
|
|
|
|
uint32_t paintFlags = aDisplayListBuilder->GetBackgroundPaintFlags();
|
|
bool dummy;
|
|
nsCSSRendering::PaintBGParams params =
|
|
nsCSSRendering::PaintBGParams::ForSingleLayer(
|
|
*StyleFrame()->PresContext(), GetBounds(aDisplayListBuilder, &dummy),
|
|
mBackgroundRect, StyleFrame(), paintFlags, mLayer,
|
|
CompositionOp::OP_OVER, aBuilder.GetInheritedOpacity());
|
|
params.bgClipRect = &mBounds;
|
|
ImgDrawResult result =
|
|
nsCSSRendering::BuildWebRenderDisplayItemsForStyleImageLayer(
|
|
params, aBuilder, aResources, aSc, aManager, this);
|
|
if (result == ImgDrawResult::NOT_SUPPORTED) {
|
|
return false;
|
|
}
|
|
|
|
if (nsIContent* content = StyleFrame()->GetContent()) {
|
|
if (imgRequestProxy* requestProxy = mBackgroundStyle->StyleBackground()
|
|
->mImage.mLayers[mLayer]
|
|
.mImage.GetImageRequest()) {
|
|
// LCP don't consider gradient backgrounds.
|
|
LCPHelpers::FinalizeLCPEntryForImage(content->AsElement(), requestProxy,
|
|
mBounds - ToReferenceFrame());
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void nsDisplayBackgroundImage::HitTest(nsDisplayListBuilder* aBuilder,
|
|
const nsRect& aRect,
|
|
HitTestState* aState,
|
|
nsTArray<nsIFrame*>* aOutFrames) {
|
|
if (RoundedBorderIntersectsRect(mFrame, ToReferenceFrame(), aRect)) {
|
|
aOutFrames->AppendElement(mFrame);
|
|
}
|
|
}
|
|
|
|
static nsRect GetInsideClipRect(const nsDisplayItem* aItem,
|
|
StyleGeometryBox aClip, const nsRect& aRect,
|
|
const nsRect& aBackgroundRect) {
|
|
if (aRect.IsEmpty()) {
|
|
return {};
|
|
}
|
|
|
|
nsIFrame* frame = aItem->Frame();
|
|
|
|
nsRect clipRect = aBackgroundRect;
|
|
if (frame->IsCanvasFrame()) {
|
|
nsCanvasFrame* canvasFrame = static_cast<nsCanvasFrame*>(frame);
|
|
clipRect = canvasFrame->CanvasArea() + aItem->ToReferenceFrame();
|
|
} else if (aClip == StyleGeometryBox::PaddingBox ||
|
|
aClip == StyleGeometryBox::ContentBox) {
|
|
nsMargin border = frame->GetUsedBorder();
|
|
if (aClip == StyleGeometryBox::ContentBox) {
|
|
border += frame->GetUsedPadding();
|
|
}
|
|
border.ApplySkipSides(frame->GetSkipSides());
|
|
clipRect.Deflate(border);
|
|
}
|
|
|
|
return clipRect.Intersect(aRect);
|
|
}
|
|
|
|
nsRegion nsDisplayBackgroundImage::GetOpaqueRegion(
|
|
nsDisplayListBuilder* aBuilder, bool* aSnap) const {
|
|
nsRegion result;
|
|
*aSnap = false;
|
|
|
|
if (!mBackgroundStyle) {
|
|
return result;
|
|
}
|
|
|
|
*aSnap = true;
|
|
|
|
// For StyleBoxDecorationBreak::Slice, don't try to optimize here, since
|
|
// this could easily lead to O(N^2) behavior inside InlineBackgroundData,
|
|
// which expects frames to be sent to it in content order, not reverse
|
|
// content order which we'll produce here.
|
|
// Of course, if there's only one frame in the flow, it doesn't matter.
|
|
if (mFrame->StyleBorder()->mBoxDecorationBreak ==
|
|
StyleBoxDecorationBreak::Clone ||
|
|
(!mFrame->GetPrevContinuation() && !mFrame->GetNextContinuation())) {
|
|
const nsStyleImageLayers::Layer& layer =
|
|
mBackgroundStyle->StyleBackground()->mImage.mLayers[mLayer];
|
|
if (layer.mImage.IsOpaque() && layer.mBlendMode == StyleBlend::Normal &&
|
|
layer.mRepeat.mXRepeat != StyleImageLayerRepeat::Space &&
|
|
layer.mRepeat.mYRepeat != StyleImageLayerRepeat::Space &&
|
|
layer.mClip != StyleGeometryBox::Text) {
|
|
result = GetInsideClipRect(this, layer.mClip, mBounds, mBackgroundRect);
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
Maybe<nscolor> nsDisplayBackgroundImage::IsUniform(
|
|
nsDisplayListBuilder* aBuilder) const {
|
|
if (!mBackgroundStyle) {
|
|
return Some(NS_RGBA(0, 0, 0, 0));
|
|
}
|
|
return Nothing();
|
|
}
|
|
|
|
nsRect nsDisplayBackgroundImage::GetPositioningArea() const {
|
|
if (!mBackgroundStyle) {
|
|
return nsRect();
|
|
}
|
|
nsIFrame* attachedToFrame;
|
|
bool transformedFixed;
|
|
return nsCSSRendering::ComputeImageLayerPositioningArea(
|
|
mFrame->PresContext(), mFrame, mBackgroundRect,
|
|
mBackgroundStyle->StyleBackground()->mImage.mLayers[mLayer],
|
|
&attachedToFrame, &transformedFixed) +
|
|
ToReferenceFrame();
|
|
}
|
|
|
|
bool nsDisplayBackgroundImage::RenderingMightDependOnPositioningAreaSizeChange()
|
|
const {
|
|
if (!mBackgroundStyle) {
|
|
return false;
|
|
}
|
|
|
|
nscoord radii[8];
|
|
if (mFrame->GetBorderRadii(radii)) {
|
|
// A change in the size of the positioning area might change the position
|
|
// of the rounded corners.
|
|
return true;
|
|
}
|
|
|
|
const nsStyleImageLayers::Layer& layer =
|
|
mBackgroundStyle->StyleBackground()->mImage.mLayers[mLayer];
|
|
return layer.RenderingMightDependOnPositioningAreaSizeChange();
|
|
}
|
|
|
|
void nsDisplayBackgroundImage::Paint(nsDisplayListBuilder* aBuilder,
|
|
gfxContext* aCtx) {
|
|
PaintInternal(aBuilder, aCtx, GetPaintRect(aBuilder, aCtx), &mBounds);
|
|
}
|
|
|
|
void nsDisplayBackgroundImage::PaintInternal(nsDisplayListBuilder* aBuilder,
|
|
gfxContext* aCtx,
|
|
const nsRect& aBounds,
|
|
nsRect* aClipRect) {
|
|
gfxContext* ctx = aCtx;
|
|
StyleGeometryBox clip =
|
|
mBackgroundStyle->StyleBackground()->mImage.mLayers[mLayer].mClip;
|
|
|
|
if (clip == StyleGeometryBox::Text) {
|
|
if (!GenerateAndPushTextMask(StyleFrame(), aCtx, mBackgroundRect,
|
|
aBuilder)) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
nsCSSRendering::PaintBGParams params =
|
|
nsCSSRendering::PaintBGParams::ForSingleLayer(
|
|
*StyleFrame()->PresContext(), aBounds, mBackgroundRect, StyleFrame(),
|
|
aBuilder->GetBackgroundPaintFlags(), mLayer, CompositionOp::OP_OVER,
|
|
1.0f);
|
|
params.bgClipRect = aClipRect;
|
|
Unused << nsCSSRendering::PaintStyleImageLayer(params, *aCtx);
|
|
|
|
if (clip == StyleGeometryBox::Text) {
|
|
ctx->PopGroupAndBlend();
|
|
}
|
|
}
|
|
|
|
void nsDisplayBackgroundImage::ComputeInvalidationRegion(
|
|
nsDisplayListBuilder* aBuilder, const nsDisplayItemGeometry* aGeometry,
|
|
nsRegion* aInvalidRegion) const {
|
|
if (!mBackgroundStyle) {
|
|
return;
|
|
}
|
|
|
|
const auto* geometry =
|
|
static_cast<const nsDisplayBackgroundGeometry*>(aGeometry);
|
|
|
|
bool snap;
|
|
nsRect bounds = GetBounds(aBuilder, &snap);
|
|
nsRect positioningArea = GetPositioningArea();
|
|
if (positioningArea.TopLeft() != geometry->mPositioningArea.TopLeft() ||
|
|
(positioningArea.Size() != geometry->mPositioningArea.Size() &&
|
|
RenderingMightDependOnPositioningAreaSizeChange())) {
|
|
// Positioning area changed in a way that could cause everything to change,
|
|
// so invalidate everything (both old and new painting areas).
|
|
aInvalidRegion->Or(bounds, geometry->mBounds);
|
|
return;
|
|
}
|
|
if (!mDestRect.IsEqualInterior(geometry->mDestRect)) {
|
|
// Dest area changed in a way that could cause everything to change,
|
|
// so invalidate everything (both old and new painting areas).
|
|
aInvalidRegion->Or(bounds, geometry->mBounds);
|
|
return;
|
|
}
|
|
if (!bounds.IsEqualInterior(geometry->mBounds)) {
|
|
// Positioning area is unchanged, so invalidate just the change in the
|
|
// painting area.
|
|
aInvalidRegion->Xor(bounds, geometry->mBounds);
|
|
}
|
|
}
|
|
|
|
nsRect nsDisplayBackgroundImage::GetBounds(nsDisplayListBuilder* aBuilder,
|
|
bool* aSnap) const {
|
|
*aSnap = true;
|
|
return mBounds;
|
|
}
|
|
|
|
nsRect nsDisplayBackgroundImage::GetBoundsInternal(
|
|
nsDisplayListBuilder* aBuilder, nsIFrame* aFrameForBounds) {
|
|
// This allows nsDisplayTableBackgroundImage to change the frame used for
|
|
// bounds calculation.
|
|
nsIFrame* frame = aFrameForBounds ? aFrameForBounds : mFrame;
|
|
|
|
nsPresContext* presContext = frame->PresContext();
|
|
|
|
if (!mBackgroundStyle) {
|
|
return nsRect();
|
|
}
|
|
|
|
nsRect clipRect = mBackgroundRect;
|
|
if (frame->IsCanvasFrame()) {
|
|
nsCanvasFrame* canvasFrame = static_cast<nsCanvasFrame*>(frame);
|
|
clipRect = canvasFrame->CanvasArea() + ToReferenceFrame();
|
|
}
|
|
const nsStyleImageLayers::Layer& layer =
|
|
mBackgroundStyle->StyleBackground()->mImage.mLayers[mLayer];
|
|
return nsCSSRendering::GetBackgroundLayerRect(
|
|
presContext, frame, mBackgroundRect, clipRect, layer,
|
|
aBuilder->GetBackgroundPaintFlags());
|
|
}
|
|
|
|
nsDisplayTableBackgroundImage::nsDisplayTableBackgroundImage(
|
|
nsDisplayListBuilder* aBuilder, nsIFrame* aFrame, const InitData& aData,
|
|
nsIFrame* aCellFrame)
|
|
: nsDisplayBackgroundImage(aBuilder, aFrame, aData, aCellFrame),
|
|
mStyleFrame(aCellFrame) {
|
|
if (aBuilder->IsRetainingDisplayList()) {
|
|
mStyleFrame->AddDisplayItem(this);
|
|
}
|
|
}
|
|
|
|
nsDisplayTableBackgroundImage::~nsDisplayTableBackgroundImage() {
|
|
if (mStyleFrame) {
|
|
mStyleFrame->RemoveDisplayItem(this);
|
|
}
|
|
}
|
|
|
|
bool nsDisplayTableBackgroundImage::IsInvalid(nsRect& aRect) const {
|
|
bool result = mStyleFrame ? mStyleFrame->IsInvalid(aRect) : false;
|
|
aRect += ToReferenceFrame();
|
|
return result;
|
|
}
|
|
|
|
nsDisplayThemedBackground::nsDisplayThemedBackground(
|
|
nsDisplayListBuilder* aBuilder, nsIFrame* aFrame,
|
|
const nsRect& aBackgroundRect)
|
|
: nsPaintedDisplayItem(aBuilder, aFrame), mBackgroundRect(aBackgroundRect) {
|
|
MOZ_COUNT_CTOR(nsDisplayThemedBackground);
|
|
}
|
|
|
|
void nsDisplayThemedBackground::Init(nsDisplayListBuilder* aBuilder) {
|
|
const nsStyleDisplay* disp = StyleFrame()->StyleDisplay();
|
|
mAppearance = disp->EffectiveAppearance();
|
|
StyleFrame()->IsThemed(disp, &mThemeTransparency);
|
|
|
|
// Perform necessary RegisterThemeGeometry
|
|
nsITheme* theme = StyleFrame()->PresContext()->Theme();
|
|
nsITheme::ThemeGeometryType type =
|
|
theme->ThemeGeometryTypeForWidget(StyleFrame(), mAppearance);
|
|
if (type != nsITheme::eThemeGeometryTypeUnknown) {
|
|
RegisterThemeGeometry(aBuilder, this, StyleFrame(), type);
|
|
}
|
|
|
|
mBounds = GetBoundsInternal();
|
|
}
|
|
|
|
void nsDisplayThemedBackground::WriteDebugInfo(std::stringstream& aStream) {
|
|
aStream << " (themed, appearance:" << (int)mAppearance << ")";
|
|
}
|
|
|
|
void nsDisplayThemedBackground::HitTest(nsDisplayListBuilder* aBuilder,
|
|
const nsRect& aRect,
|
|
HitTestState* aState,
|
|
nsTArray<nsIFrame*>* aOutFrames) {
|
|
// Assume that any point in our background rect is a hit.
|
|
if (mBackgroundRect.Intersects(aRect)) {
|
|
aOutFrames->AppendElement(mFrame);
|
|
}
|
|
}
|
|
|
|
nsRegion nsDisplayThemedBackground::GetOpaqueRegion(
|
|
nsDisplayListBuilder* aBuilder, bool* aSnap) const {
|
|
nsRegion result;
|
|
*aSnap = false;
|
|
|
|
if (mThemeTransparency == nsITheme::eOpaque) {
|
|
*aSnap = true;
|
|
result = mBackgroundRect;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
Maybe<nscolor> nsDisplayThemedBackground::IsUniform(
|
|
nsDisplayListBuilder* aBuilder) const {
|
|
return Nothing();
|
|
}
|
|
|
|
nsRect nsDisplayThemedBackground::GetPositioningArea() const {
|
|
return mBackgroundRect;
|
|
}
|
|
|
|
void nsDisplayThemedBackground::Paint(nsDisplayListBuilder* aBuilder,
|
|
gfxContext* aCtx) {
|
|
PaintInternal(aBuilder, aCtx, GetPaintRect(aBuilder, aCtx), nullptr);
|
|
}
|
|
|
|
void nsDisplayThemedBackground::PaintInternal(nsDisplayListBuilder* aBuilder,
|
|
gfxContext* aCtx,
|
|
const nsRect& aBounds,
|
|
nsRect* aClipRect) {
|
|
// XXXzw this ignores aClipRect.
|
|
nsPresContext* presContext = StyleFrame()->PresContext();
|
|
nsITheme* theme = presContext->Theme();
|
|
nsRect drawing(mBackgroundRect);
|
|
theme->GetWidgetOverflow(presContext->DeviceContext(), StyleFrame(),
|
|
mAppearance, &drawing);
|
|
drawing.IntersectRect(drawing, aBounds);
|
|
theme->DrawWidgetBackground(aCtx, StyleFrame(), mAppearance, mBackgroundRect,
|
|
drawing);
|
|
}
|
|
|
|
bool nsDisplayThemedBackground::CreateWebRenderCommands(
|
|
wr::DisplayListBuilder& aBuilder, wr::IpcResourceUpdateQueue& aResources,
|
|
const StackingContextHelper& aSc, RenderRootStateManager* aManager,
|
|
nsDisplayListBuilder* aDisplayListBuilder) {
|
|
nsITheme* theme = StyleFrame()->PresContext()->Theme();
|
|
return theme->CreateWebRenderCommandsForWidget(aBuilder, aResources, aSc,
|
|
aManager, StyleFrame(),
|
|
mAppearance, mBackgroundRect);
|
|
}
|
|
|
|
bool nsDisplayThemedBackground::IsWindowActive() const {
|
|
return !mFrame->PresContext()->Document()->IsTopLevelWindowInactive();
|
|
}
|
|
|
|
void nsDisplayThemedBackground::ComputeInvalidationRegion(
|
|
nsDisplayListBuilder* aBuilder, const nsDisplayItemGeometry* aGeometry,
|
|
nsRegion* aInvalidRegion) const {
|
|
const auto* geometry =
|
|
static_cast<const nsDisplayThemedBackgroundGeometry*>(aGeometry);
|
|
|
|
bool snap;
|
|
nsRect bounds = GetBounds(aBuilder, &snap);
|
|
nsRect positioningArea = GetPositioningArea();
|
|
if (!positioningArea.IsEqualInterior(geometry->mPositioningArea)) {
|
|
// Invalidate everything (both old and new painting areas).
|
|
aInvalidRegion->Or(bounds, geometry->mBounds);
|
|
return;
|
|
}
|
|
if (!bounds.IsEqualInterior(geometry->mBounds)) {
|
|
// Positioning area is unchanged, so invalidate just the change in the
|
|
// painting area.
|
|
aInvalidRegion->Xor(bounds, geometry->mBounds);
|
|
}
|
|
nsITheme* theme = StyleFrame()->PresContext()->Theme();
|
|
if (theme->WidgetAppearanceDependsOnWindowFocus(mAppearance) &&
|
|
IsWindowActive() != geometry->mWindowIsActive) {
|
|
aInvalidRegion->Or(*aInvalidRegion, bounds);
|
|
}
|
|
}
|
|
|
|
nsRect nsDisplayThemedBackground::GetBounds(nsDisplayListBuilder* aBuilder,
|
|
bool* aSnap) const {
|
|
*aSnap = true;
|
|
return mBounds;
|
|
}
|
|
|
|
nsRect nsDisplayThemedBackground::GetBoundsInternal() {
|
|
nsPresContext* presContext = mFrame->PresContext();
|
|
|
|
nsRect r = mBackgroundRect - ToReferenceFrame();
|
|
presContext->Theme()->GetWidgetOverflow(
|
|
presContext->DeviceContext(), mFrame,
|
|
mFrame->StyleDisplay()->EffectiveAppearance(), &r);
|
|
return r + ToReferenceFrame();
|
|
}
|
|
|
|
#if defined(MOZ_REFLOW_PERF_DSP) && defined(MOZ_REFLOW_PERF)
|
|
void nsDisplayReflowCount::Paint(nsDisplayListBuilder* aBuilder,
|
|
gfxContext* aCtx) {
|
|
mFrame->PresShell()->PaintCount(mFrameName, aCtx, mFrame->PresContext(),
|
|
mFrame, ToReferenceFrame(), mColor);
|
|
}
|
|
#endif
|
|
|
|
bool nsDisplayBackgroundColor::CanApplyOpacity(
|
|
WebRenderLayerManager* aManager, nsDisplayListBuilder* aBuilder) const {
|
|
// Don't apply opacity if the background color is animated since the color is
|
|
// going to be changed on the compositor.
|
|
return !EffectCompositor::HasAnimationsForCompositor(
|
|
mFrame, DisplayItemType::TYPE_BACKGROUND_COLOR);
|
|
}
|
|
|
|
bool nsDisplayBackgroundColor::CreateWebRenderCommands(
|
|
wr::DisplayListBuilder& aBuilder, wr::IpcResourceUpdateQueue& aResources,
|
|
const StackingContextHelper& aSc, RenderRootStateManager* aManager,
|
|
nsDisplayListBuilder* aDisplayListBuilder) {
|
|
gfx::sRGBColor color = mColor;
|
|
color.a *= aBuilder.GetInheritedOpacity();
|
|
|
|
if (color == sRGBColor() &&
|
|
!EffectCompositor::HasAnimationsForCompositor(
|
|
mFrame, DisplayItemType::TYPE_BACKGROUND_COLOR)) {
|
|
return true;
|
|
}
|
|
|
|
if (HasBackgroundClipText()) {
|
|
return false;
|
|
}
|
|
|
|
uint64_t animationsId = 0;
|
|
// We don't support background-color animations on table elements yet.
|
|
if (GetType() == DisplayItemType::TYPE_BACKGROUND_COLOR) {
|
|
animationsId =
|
|
AddAnimationsForWebRender(this, aManager, aDisplayListBuilder);
|
|
}
|
|
|
|
LayoutDeviceRect bounds = LayoutDeviceRect::FromAppUnits(
|
|
mBackgroundRect, mFrame->PresContext()->AppUnitsPerDevPixel());
|
|
wr::LayoutRect r = wr::ToLayoutRect(bounds);
|
|
|
|
if (animationsId) {
|
|
wr::WrAnimationProperty prop{
|
|
wr::WrAnimationType::BackgroundColor,
|
|
animationsId,
|
|
};
|
|
aBuilder.PushRectWithAnimation(r, r, !BackfaceIsHidden(),
|
|
wr::ToColorF(ToDeviceColor(color)), &prop);
|
|
} else {
|
|
aBuilder.StartGroup(this);
|
|
aBuilder.PushRect(r, r, !BackfaceIsHidden(), false, false,
|
|
wr::ToColorF(ToDeviceColor(color)));
|
|
aBuilder.FinishGroup();
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void nsDisplayBackgroundColor::PaintWithClip(nsDisplayListBuilder* aBuilder,
|
|
gfxContext* aCtx,
|
|
const DisplayItemClip& aClip) {
|
|
MOZ_ASSERT(!HasBackgroundClipText());
|
|
|
|
if (mColor == sRGBColor()) {
|
|
return;
|
|
}
|
|
|
|
nsRect fillRect = mBackgroundRect;
|
|
if (aClip.HasClip()) {
|
|
fillRect.IntersectRect(fillRect, aClip.GetClipRect());
|
|
}
|
|
|
|
DrawTarget* dt = aCtx->GetDrawTarget();
|
|
int32_t A2D = mFrame->PresContext()->AppUnitsPerDevPixel();
|
|
Rect bounds = ToRect(nsLayoutUtils::RectToGfxRect(fillRect, A2D));
|
|
MaybeSnapToDevicePixels(bounds, *dt);
|
|
ColorPattern fill(ToDeviceColor(mColor));
|
|
|
|
if (aClip.GetRoundedRectCount()) {
|
|
MOZ_ASSERT(aClip.GetRoundedRectCount() == 1);
|
|
|
|
AutoTArray<DisplayItemClip::RoundedRect, 1> roundedRect;
|
|
aClip.AppendRoundedRects(&roundedRect);
|
|
|
|
bool pushedClip = false;
|
|
if (!fillRect.Contains(roundedRect[0].mRect)) {
|
|
dt->PushClipRect(bounds);
|
|
pushedClip = true;
|
|
}
|
|
|
|
RectCornerRadii pixelRadii;
|
|
nsCSSRendering::ComputePixelRadii(roundedRect[0].mRadii, A2D, &pixelRadii);
|
|
dt->FillRoundedRect(
|
|
RoundedRect(NSRectToSnappedRect(roundedRect[0].mRect, A2D, *dt),
|
|
pixelRadii),
|
|
fill);
|
|
if (pushedClip) {
|
|
dt->PopClip();
|
|
}
|
|
} else {
|
|
dt->FillRect(bounds, fill);
|
|
}
|
|
}
|
|
|
|
void nsDisplayBackgroundColor::Paint(nsDisplayListBuilder* aBuilder,
|
|
gfxContext* aCtx) {
|
|
if (mColor == sRGBColor()) {
|
|
return;
|
|
}
|
|
|
|
#if 0
|
|
// See https://bugzilla.mozilla.org/show_bug.cgi?id=1148418#c21 for why this
|
|
// results in a precision induced rounding issue that makes the rect one
|
|
// pixel shorter in rare cases. Disabled in favor of the old code for now.
|
|
// Note that the pref layout.css.devPixelsPerPx needs to be set to 1 to
|
|
// reproduce the bug.
|
|
//
|
|
// TODO:
|
|
// This new path does not include support for background-clip:text; need to
|
|
// be fixed if/when we switch to this new code path.
|
|
|
|
DrawTarget& aDrawTarget = *aCtx->GetDrawTarget();
|
|
|
|
Rect rect = NSRectToSnappedRect(mBackgroundRect,
|
|
mFrame->PresContext()->AppUnitsPerDevPixel(),
|
|
aDrawTarget);
|
|
ColorPattern color(ToDeviceColor(mColor));
|
|
aDrawTarget.FillRect(rect, color);
|
|
#else
|
|
gfxContext* ctx = aCtx;
|
|
gfxRect bounds = nsLayoutUtils::RectToGfxRect(
|
|
mBackgroundRect, mFrame->PresContext()->AppUnitsPerDevPixel());
|
|
|
|
if (HasBackgroundClipText()) {
|
|
if (!GenerateAndPushTextMask(mFrame, aCtx, mBackgroundRect, aBuilder)) {
|
|
return;
|
|
}
|
|
|
|
ctx->SetColor(mColor);
|
|
ctx->NewPath();
|
|
ctx->SnappedRectangle(bounds);
|
|
ctx->Fill();
|
|
ctx->PopGroupAndBlend();
|
|
return;
|
|
}
|
|
|
|
ctx->SetColor(mColor);
|
|
ctx->NewPath();
|
|
ctx->SnappedRectangle(bounds);
|
|
ctx->Fill();
|
|
#endif
|
|
}
|
|
|
|
nsRegion nsDisplayBackgroundColor::GetOpaqueRegion(
|
|
nsDisplayListBuilder* aBuilder, bool* aSnap) const {
|
|
*aSnap = false;
|
|
|
|
if (mColor.a != 1 ||
|
|
// Even if the current alpha channel is 1, we treat this item as if it's
|
|
// non-opaque if there is a background-color animation since the animation
|
|
// might change the alpha channel.
|
|
EffectCompositor::HasAnimationsForCompositor(
|
|
mFrame, DisplayItemType::TYPE_BACKGROUND_COLOR)) {
|
|
return nsRegion();
|
|
}
|
|
|
|
if (!mHasStyle || HasBackgroundClipText()) {
|
|
return nsRegion();
|
|
}
|
|
|
|
*aSnap = true;
|
|
return GetInsideClipRect(this, mBottomLayerClip, mBackgroundRect,
|
|
mBackgroundRect);
|
|
}
|
|
|
|
Maybe<nscolor> nsDisplayBackgroundColor::IsUniform(
|
|
nsDisplayListBuilder* aBuilder) const {
|
|
return Some(mColor.ToABGR());
|
|
}
|
|
|
|
void nsDisplayBackgroundColor::HitTest(nsDisplayListBuilder* aBuilder,
|
|
const nsRect& aRect,
|
|
HitTestState* aState,
|
|
nsTArray<nsIFrame*>* aOutFrames) {
|
|
if (!RoundedBorderIntersectsRect(mFrame, ToReferenceFrame(), aRect)) {
|
|
// aRect doesn't intersect our border-radius curve.
|
|
return;
|
|
}
|
|
|
|
aOutFrames->AppendElement(mFrame);
|
|
}
|
|
|
|
void nsDisplayBackgroundColor::WriteDebugInfo(std::stringstream& aStream) {
|
|
aStream << " (rgba " << mColor.r << "," << mColor.g << "," << mColor.b << ","
|
|
<< mColor.a << ")";
|
|
aStream << " backgroundRect" << mBackgroundRect;
|
|
}
|
|
|
|
nsRect nsDisplayOutline::GetBounds(nsDisplayListBuilder* aBuilder,
|
|
bool* aSnap) const {
|
|
*aSnap = false;
|
|
return mFrame->InkOverflowRectRelativeToSelf() + ToReferenceFrame();
|
|
}
|
|
|
|
nsRect nsDisplayOutline::GetInnerRect() const {
|
|
if (nsRect* savedOutlineInnerRect =
|
|
mFrame->GetProperty(nsIFrame::OutlineInnerRectProperty())) {
|
|
return *savedOutlineInnerRect;
|
|
}
|
|
return mFrame->GetRectRelativeToSelf();
|
|
}
|
|
|
|
void nsDisplayOutline::Paint(nsDisplayListBuilder* aBuilder, gfxContext* aCtx) {
|
|
// TODO join outlines together
|
|
MOZ_ASSERT(mFrame->StyleOutline()->ShouldPaintOutline(),
|
|
"Should have not created a nsDisplayOutline!");
|
|
|
|
nsRect rect = GetInnerRect() + ToReferenceFrame();
|
|
nsPresContext* pc = mFrame->PresContext();
|
|
if (IsThemedOutline()) {
|
|
rect.Inflate(mFrame->StyleOutline()->EffectiveOffsetFor(rect));
|
|
pc->Theme()->DrawWidgetBackground(aCtx, mFrame,
|
|
StyleAppearance::FocusOutline, rect,
|
|
GetPaintRect(aBuilder, aCtx));
|
|
return;
|
|
}
|
|
|
|
nsCSSRendering::PaintNonThemedOutline(
|
|
pc, *aCtx, mFrame, GetPaintRect(aBuilder, aCtx), rect, mFrame->Style());
|
|
}
|
|
|
|
bool nsDisplayOutline::IsThemedOutline() const {
|
|
#ifdef DEBUG
|
|
nsPresContext* pc = mFrame->PresContext();
|
|
MOZ_ASSERT(
|
|
pc->Theme()->ThemeSupportsWidget(pc, mFrame,
|
|
StyleAppearance::FocusOutline),
|
|
"All of our supported platforms have support for themed focus-outlines");
|
|
#endif
|
|
return mFrame->StyleOutline()->mOutlineStyle.IsAuto();
|
|
}
|
|
|
|
bool nsDisplayOutline::CreateWebRenderCommands(
|
|
wr::DisplayListBuilder& aBuilder, wr::IpcResourceUpdateQueue& aResources,
|
|
const StackingContextHelper& aSc, RenderRootStateManager* aManager,
|
|
nsDisplayListBuilder* aDisplayListBuilder) {
|
|
nsPresContext* pc = mFrame->PresContext();
|
|
nsRect rect = GetInnerRect() + ToReferenceFrame();
|
|
if (IsThemedOutline()) {
|
|
rect.Inflate(mFrame->StyleOutline()->EffectiveOffsetFor(rect));
|
|
return pc->Theme()->CreateWebRenderCommandsForWidget(
|
|
aBuilder, aResources, aSc, aManager, mFrame,
|
|
StyleAppearance::FocusOutline, rect);
|
|
}
|
|
|
|
bool dummy;
|
|
Maybe<nsCSSBorderRenderer> borderRenderer =
|
|
nsCSSRendering::CreateBorderRendererForNonThemedOutline(
|
|
pc, /* aDrawTarget = */ nullptr, mFrame,
|
|
GetBounds(aDisplayListBuilder, &dummy), rect, mFrame->Style());
|
|
|
|
if (!borderRenderer) {
|
|
// No border renderer means "there is no outline".
|
|
// Paint nothing and return success.
|
|
return true;
|
|
}
|
|
|
|
borderRenderer->CreateWebRenderCommands(this, aBuilder, aResources, aSc);
|
|
return true;
|
|
}
|
|
|
|
bool nsDisplayOutline::HasRadius() const {
|
|
const auto& radius = mFrame->StyleBorder()->mBorderRadius;
|
|
return !nsLayoutUtils::HasNonZeroCorner(radius);
|
|
}
|
|
|
|
bool nsDisplayOutline::IsInvisibleInRect(const nsRect& aRect) const {
|
|
const nsStyleOutline* outline = mFrame->StyleOutline();
|
|
nsRect borderBox(ToReferenceFrame(), mFrame->GetSize());
|
|
if (borderBox.Contains(aRect) && !HasRadius() &&
|
|
outline->mOutlineOffset.ToCSSPixels() >= 0.0f) {
|
|
// aRect is entirely inside the border-rect, and the outline isn't rendered
|
|
// inside the border-rect, so the outline is not visible.
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void nsDisplayEventReceiver::HitTest(nsDisplayListBuilder* aBuilder,
|
|
const nsRect& aRect, HitTestState* aState,
|
|
nsTArray<nsIFrame*>* aOutFrames) {
|
|
if (!RoundedBorderIntersectsRect(mFrame, ToReferenceFrame(), aRect)) {
|
|
// aRect doesn't intersect our border-radius curve.
|
|
return;
|
|
}
|
|
|
|
aOutFrames->AppendElement(mFrame);
|
|
}
|
|
|
|
bool nsDisplayCompositorHitTestInfo::CreateWebRenderCommands(
|
|
wr::DisplayListBuilder& aBuilder, wr::IpcResourceUpdateQueue& aResources,
|
|
const StackingContextHelper& aSc, RenderRootStateManager* aManager,
|
|
nsDisplayListBuilder* aDisplayListBuilder) {
|
|
return true;
|
|
}
|
|
|
|
int32_t nsDisplayCompositorHitTestInfo::ZIndex() const {
|
|
return mOverrideZIndex ? *mOverrideZIndex : nsDisplayItem::ZIndex();
|
|
}
|
|
|
|
void nsDisplayCompositorHitTestInfo::SetOverrideZIndex(int32_t aZIndex) {
|
|
mOverrideZIndex = Some(aZIndex);
|
|
}
|
|
|
|
nsDisplayCaret::nsDisplayCaret(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aCaretFrame)
|
|
: nsPaintedDisplayItem(aBuilder, aCaretFrame),
|
|
mCaret(aBuilder->GetCaret()),
|
|
mBounds(aBuilder->GetCaretRect() + ToReferenceFrame()) {
|
|
MOZ_COUNT_CTOR(nsDisplayCaret);
|
|
// The presence of a caret doesn't change the overflow rect
|
|
// of the owning frame, so the normal building rect might not
|
|
// include the caret at all. We use MarkFrameForDisplay to ensure
|
|
// we build this item, and here we override the building rect
|
|
// to cover the pixels we're going to draw.
|
|
SetBuildingRect(mBounds);
|
|
}
|
|
|
|
#ifdef NS_BUILD_REFCNT_LOGGING
|
|
nsDisplayCaret::~nsDisplayCaret() { MOZ_COUNT_DTOR(nsDisplayCaret); }
|
|
#endif
|
|
|
|
nsRect nsDisplayCaret::GetBounds(nsDisplayListBuilder* aBuilder,
|
|
bool* aSnap) const {
|
|
*aSnap = true;
|
|
// The caret returns a rect in the coordinates of mFrame.
|
|
return mBounds;
|
|
}
|
|
|
|
void nsDisplayCaret::Paint(nsDisplayListBuilder* aBuilder, gfxContext* aCtx) {
|
|
// Note: Because we exist, we know that the caret is visible, so we don't
|
|
// need to check for the caret's visibility.
|
|
mCaret->PaintCaret(*aCtx->GetDrawTarget(), mFrame, ToReferenceFrame());
|
|
}
|
|
|
|
bool nsDisplayCaret::CreateWebRenderCommands(
|
|
wr::DisplayListBuilder& aBuilder, wr::IpcResourceUpdateQueue& aResources,
|
|
const StackingContextHelper& aSc, RenderRootStateManager* aManager,
|
|
nsDisplayListBuilder* aDisplayListBuilder) {
|
|
using namespace layers;
|
|
nsRect caretRect;
|
|
nsRect hookRect;
|
|
nscolor caretColor;
|
|
nsIFrame* frame =
|
|
mCaret->GetPaintGeometry(&caretRect, &hookRect, &caretColor);
|
|
if (NS_WARN_IF(!frame) || NS_WARN_IF(frame != mFrame)) {
|
|
return true;
|
|
}
|
|
|
|
int32_t appUnitsPerDevPixel = frame->PresContext()->AppUnitsPerDevPixel();
|
|
gfx::DeviceColor color = ToDeviceColor(caretColor);
|
|
LayoutDeviceRect devCaretRect = LayoutDeviceRect::FromAppUnits(
|
|
caretRect + ToReferenceFrame(), appUnitsPerDevPixel);
|
|
LayoutDeviceRect devHookRect = LayoutDeviceRect::FromAppUnits(
|
|
hookRect + ToReferenceFrame(), appUnitsPerDevPixel);
|
|
|
|
wr::LayoutRect caret = wr::ToLayoutRect(devCaretRect);
|
|
wr::LayoutRect hook = wr::ToLayoutRect(devHookRect);
|
|
|
|
// Note, WR will pixel snap anything that is layout aligned.
|
|
aBuilder.PushRect(caret, caret, !BackfaceIsHidden(), false, false,
|
|
wr::ToColorF(color));
|
|
|
|
if (!devHookRect.IsEmpty()) {
|
|
aBuilder.PushRect(hook, hook, !BackfaceIsHidden(), false, false,
|
|
wr::ToColorF(color));
|
|
}
|
|
return true;
|
|
}
|
|
|
|
nsDisplayBorder::nsDisplayBorder(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame)
|
|
: nsPaintedDisplayItem(aBuilder, aFrame) {
|
|
MOZ_COUNT_CTOR(nsDisplayBorder);
|
|
|
|
mBounds = CalculateBounds<nsRect>(*mFrame->StyleBorder());
|
|
}
|
|
|
|
bool nsDisplayBorder::IsInvisibleInRect(const nsRect& aRect) const {
|
|
nsRect paddingRect = GetPaddingRect();
|
|
const nsStyleBorder* styleBorder;
|
|
if (paddingRect.Contains(aRect) &&
|
|
!(styleBorder = mFrame->StyleBorder())->IsBorderImageSizeAvailable() &&
|
|
!nsLayoutUtils::HasNonZeroCorner(styleBorder->mBorderRadius)) {
|
|
// aRect is entirely inside the content rect, and no part
|
|
// of the border is rendered inside the content rect, so we are not
|
|
// visible
|
|
// Skip this if there's a border-image (which draws a background
|
|
// too) or if there is a border-radius (which makes the border draw
|
|
// further in).
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
nsDisplayItemGeometry* nsDisplayBorder::AllocateGeometry(
|
|
nsDisplayListBuilder* aBuilder) {
|
|
return new nsDisplayBorderGeometry(this, aBuilder);
|
|
}
|
|
|
|
void nsDisplayBorder::ComputeInvalidationRegion(
|
|
nsDisplayListBuilder* aBuilder, const nsDisplayItemGeometry* aGeometry,
|
|
nsRegion* aInvalidRegion) const {
|
|
const auto* geometry = static_cast<const nsDisplayBorderGeometry*>(aGeometry);
|
|
bool snap;
|
|
|
|
if (!geometry->mBounds.IsEqualInterior(GetBounds(aBuilder, &snap))) {
|
|
// We can probably get away with only invalidating the difference
|
|
// between the border and padding rects, but the XUL ui at least
|
|
// is apparently painting a background with this?
|
|
aInvalidRegion->Or(GetBounds(aBuilder, &snap), geometry->mBounds);
|
|
}
|
|
}
|
|
|
|
bool nsDisplayBorder::CreateWebRenderCommands(
|
|
wr::DisplayListBuilder& aBuilder, wr::IpcResourceUpdateQueue& aResources,
|
|
const StackingContextHelper& aSc, RenderRootStateManager* aManager,
|
|
nsDisplayListBuilder* aDisplayListBuilder) {
|
|
nsRect rect = nsRect(ToReferenceFrame(), mFrame->GetSize());
|
|
|
|
ImgDrawResult drawResult = nsCSSRendering::CreateWebRenderCommandsForBorder(
|
|
this, mFrame, rect, aBuilder, aResources, aSc, aManager,
|
|
aDisplayListBuilder);
|
|
|
|
if (drawResult == ImgDrawResult::NOT_SUPPORTED) {
|
|
return false;
|
|
}
|
|
return true;
|
|
};
|
|
|
|
void nsDisplayBorder::Paint(nsDisplayListBuilder* aBuilder, gfxContext* aCtx) {
|
|
nsPoint offset = ToReferenceFrame();
|
|
|
|
PaintBorderFlags flags = aBuilder->ShouldSyncDecodeImages()
|
|
? PaintBorderFlags::SyncDecodeImages
|
|
: PaintBorderFlags();
|
|
|
|
Unused << nsCSSRendering::PaintBorder(
|
|
mFrame->PresContext(), *aCtx, mFrame, GetPaintRect(aBuilder, aCtx),
|
|
nsRect(offset, mFrame->GetSize()), mFrame->Style(), flags,
|
|
mFrame->GetSkipSides());
|
|
}
|
|
|
|
nsRect nsDisplayBorder::GetBounds(nsDisplayListBuilder* aBuilder,
|
|
bool* aSnap) const {
|
|
*aSnap = true;
|
|
return mBounds;
|
|
}
|
|
|
|
void nsDisplayBoxShadowOuter::Paint(nsDisplayListBuilder* aBuilder,
|
|
gfxContext* aCtx) {
|
|
nsPoint offset = ToReferenceFrame();
|
|
nsRect borderRect = mFrame->VisualBorderRectRelativeToSelf() + offset;
|
|
nsPresContext* presContext = mFrame->PresContext();
|
|
|
|
AUTO_PROFILER_LABEL("nsDisplayBoxShadowOuter::Paint", GRAPHICS);
|
|
|
|
nsCSSRendering::PaintBoxShadowOuter(presContext, *aCtx, mFrame, borderRect,
|
|
GetPaintRect(aBuilder, aCtx), 1.0f);
|
|
}
|
|
|
|
nsRect nsDisplayBoxShadowOuter::GetBounds(nsDisplayListBuilder* aBuilder,
|
|
bool* aSnap) const {
|
|
*aSnap = false;
|
|
return mBounds;
|
|
}
|
|
|
|
nsRect nsDisplayBoxShadowOuter::GetBoundsInternal() {
|
|
return nsLayoutUtils::GetBoxShadowRectForFrame(mFrame, mFrame->GetSize()) +
|
|
ToReferenceFrame();
|
|
}
|
|
|
|
bool nsDisplayBoxShadowOuter::IsInvisibleInRect(const nsRect& aRect) const {
|
|
nsPoint origin = ToReferenceFrame();
|
|
nsRect frameRect(origin, mFrame->GetSize());
|
|
if (!frameRect.Contains(aRect)) {
|
|
return false;
|
|
}
|
|
|
|
// the visible region is entirely inside the border-rect, and box shadows
|
|
// never render within the border-rect (unless there's a border radius).
|
|
nscoord twipsRadii[8];
|
|
bool hasBorderRadii = mFrame->GetBorderRadii(twipsRadii);
|
|
if (!hasBorderRadii) {
|
|
return true;
|
|
}
|
|
|
|
return RoundedRectContainsRect(frameRect, twipsRadii, aRect);
|
|
}
|
|
|
|
bool nsDisplayBoxShadowOuter::CanBuildWebRenderDisplayItems() const {
|
|
auto shadows = mFrame->StyleEffects()->mBoxShadow.AsSpan();
|
|
if (shadows.IsEmpty()) {
|
|
return false;
|
|
}
|
|
|
|
bool hasBorderRadius;
|
|
// We don't support native themed things yet like box shadows around
|
|
// input buttons.
|
|
//
|
|
// TODO(emilio): The non-native theme could provide the right rect+radius
|
|
// instead relatively painlessly, if we find this causes performance issues or
|
|
// what not.
|
|
return !nsCSSRendering::HasBoxShadowNativeTheme(mFrame, hasBorderRadius);
|
|
}
|
|
|
|
bool nsDisplayBoxShadowOuter::CreateWebRenderCommands(
|
|
wr::DisplayListBuilder& aBuilder, wr::IpcResourceUpdateQueue& aResources,
|
|
const StackingContextHelper& aSc, RenderRootStateManager* aManager,
|
|
nsDisplayListBuilder* aDisplayListBuilder) {
|
|
if (!CanBuildWebRenderDisplayItems()) {
|
|
return false;
|
|
}
|
|
|
|
int32_t appUnitsPerDevPixel = mFrame->PresContext()->AppUnitsPerDevPixel();
|
|
nsPoint offset = ToReferenceFrame();
|
|
nsRect borderRect = mFrame->VisualBorderRectRelativeToSelf() + offset;
|
|
bool snap;
|
|
nsRect bounds = GetBounds(aDisplayListBuilder, &snap);
|
|
|
|
bool hasBorderRadius;
|
|
bool nativeTheme =
|
|
nsCSSRendering::HasBoxShadowNativeTheme(mFrame, hasBorderRadius);
|
|
|
|
// Don't need the full size of the shadow rect like we do in
|
|
// nsCSSRendering since WR takes care of calculations for blur
|
|
// and spread radius.
|
|
nsRect frameRect =
|
|
nsCSSRendering::GetShadowRect(borderRect, nativeTheme, mFrame);
|
|
|
|
RectCornerRadii borderRadii;
|
|
if (hasBorderRadius) {
|
|
hasBorderRadius = nsCSSRendering::GetBorderRadii(frameRect, borderRect,
|
|
mFrame, borderRadii);
|
|
}
|
|
|
|
// Everything here is in app units, change to device units.
|
|
LayoutDeviceRect clipRect =
|
|
LayoutDeviceRect::FromAppUnits(bounds, appUnitsPerDevPixel);
|
|
auto shadows = mFrame->StyleEffects()->mBoxShadow.AsSpan();
|
|
MOZ_ASSERT(!shadows.IsEmpty());
|
|
|
|
for (const auto& shadow : Reversed(shadows)) {
|
|
if (shadow.inset) {
|
|
continue;
|
|
}
|
|
|
|
float blurRadius =
|
|
float(shadow.base.blur.ToAppUnits()) / float(appUnitsPerDevPixel);
|
|
gfx::sRGBColor shadowColor = nsCSSRendering::GetShadowColor(
|
|
shadow.base, mFrame, aBuilder.GetInheritedOpacity());
|
|
|
|
// We don't move the shadow rect here since WR does it for us
|
|
// Now translate everything to device pixels.
|
|
const nsRect& shadowRect = frameRect;
|
|
LayoutDevicePoint shadowOffset = LayoutDevicePoint::FromAppUnits(
|
|
nsPoint(shadow.base.horizontal.ToAppUnits(),
|
|
shadow.base.vertical.ToAppUnits()),
|
|
appUnitsPerDevPixel);
|
|
|
|
LayoutDeviceRect deviceBox =
|
|
LayoutDeviceRect::FromAppUnits(shadowRect, appUnitsPerDevPixel);
|
|
wr::LayoutRect deviceBoxRect = wr::ToLayoutRect(deviceBox);
|
|
wr::LayoutRect deviceClipRect = wr::ToLayoutRect(clipRect);
|
|
|
|
LayoutDeviceSize zeroSize;
|
|
wr::BorderRadius borderRadius =
|
|
wr::ToBorderRadius(zeroSize, zeroSize, zeroSize, zeroSize);
|
|
if (hasBorderRadius) {
|
|
borderRadius = wr::ToBorderRadius(
|
|
LayoutDeviceSize::FromUnknownSize(borderRadii.TopLeft()),
|
|
LayoutDeviceSize::FromUnknownSize(borderRadii.TopRight()),
|
|
LayoutDeviceSize::FromUnknownSize(borderRadii.BottomLeft()),
|
|
LayoutDeviceSize::FromUnknownSize(borderRadii.BottomRight()));
|
|
}
|
|
|
|
float spreadRadius =
|
|
float(shadow.spread.ToAppUnits()) / float(appUnitsPerDevPixel);
|
|
|
|
aBuilder.PushBoxShadow(deviceBoxRect, deviceClipRect, !BackfaceIsHidden(),
|
|
deviceBoxRect, wr::ToLayoutVector2D(shadowOffset),
|
|
wr::ToColorF(ToDeviceColor(shadowColor)), blurRadius,
|
|
spreadRadius, borderRadius,
|
|
wr::BoxShadowClipMode::Outset);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void nsDisplayBoxShadowOuter::ComputeInvalidationRegion(
|
|
nsDisplayListBuilder* aBuilder, const nsDisplayItemGeometry* aGeometry,
|
|
nsRegion* aInvalidRegion) const {
|
|
const auto* geometry =
|
|
static_cast<const nsDisplayItemGenericGeometry*>(aGeometry);
|
|
bool snap;
|
|
if (!geometry->mBounds.IsEqualInterior(GetBounds(aBuilder, &snap)) ||
|
|
!geometry->mBorderRect.IsEqualInterior(GetBorderRect())) {
|
|
nsRegion oldShadow, newShadow;
|
|
nscoord dontCare[8];
|
|
bool hasBorderRadius = mFrame->GetBorderRadii(dontCare);
|
|
if (hasBorderRadius) {
|
|
// If we have rounded corners then we need to invalidate the frame area
|
|
// too since we paint into it.
|
|
oldShadow = geometry->mBounds;
|
|
newShadow = GetBounds(aBuilder, &snap);
|
|
} else {
|
|
oldShadow.Sub(geometry->mBounds, geometry->mBorderRect);
|
|
newShadow.Sub(GetBounds(aBuilder, &snap), GetBorderRect());
|
|
}
|
|
aInvalidRegion->Or(oldShadow, newShadow);
|
|
}
|
|
}
|
|
|
|
void nsDisplayBoxShadowInner::Paint(nsDisplayListBuilder* aBuilder,
|
|
gfxContext* aCtx) {
|
|
nsPoint offset = ToReferenceFrame();
|
|
nsRect borderRect = nsRect(offset, mFrame->GetSize());
|
|
nsPresContext* presContext = mFrame->PresContext();
|
|
|
|
AUTO_PROFILER_LABEL("nsDisplayBoxShadowInner::Paint", GRAPHICS);
|
|
|
|
nsCSSRendering::PaintBoxShadowInner(presContext, *aCtx, mFrame, borderRect);
|
|
}
|
|
|
|
bool nsDisplayBoxShadowInner::CanCreateWebRenderCommands(
|
|
nsDisplayListBuilder* aBuilder, nsIFrame* aFrame,
|
|
const nsPoint& aReferenceOffset) {
|
|
auto shadows = aFrame->StyleEffects()->mBoxShadow.AsSpan();
|
|
if (shadows.IsEmpty()) {
|
|
// Means we don't have to paint anything
|
|
return true;
|
|
}
|
|
|
|
bool hasBorderRadius;
|
|
bool nativeTheme =
|
|
nsCSSRendering::HasBoxShadowNativeTheme(aFrame, hasBorderRadius);
|
|
|
|
// We don't support native themed things yet like box shadows around
|
|
// input buttons.
|
|
return !nativeTheme;
|
|
}
|
|
|
|
/* static */
|
|
void nsDisplayBoxShadowInner::CreateInsetBoxShadowWebRenderCommands(
|
|
wr::DisplayListBuilder& aBuilder, const StackingContextHelper& aSc,
|
|
nsRect& aVisibleRect, nsIFrame* aFrame, const nsRect& aBorderRect) {
|
|
if (!nsCSSRendering::ShouldPaintBoxShadowInner(aFrame)) {
|
|
return;
|
|
}
|
|
|
|
int32_t appUnitsPerDevPixel = aFrame->PresContext()->AppUnitsPerDevPixel();
|
|
|
|
auto shadows = aFrame->StyleEffects()->mBoxShadow.AsSpan();
|
|
|
|
LayoutDeviceRect clipRect =
|
|
LayoutDeviceRect::FromAppUnits(aVisibleRect, appUnitsPerDevPixel);
|
|
|
|
for (const auto& shadow : Reversed(shadows)) {
|
|
if (!shadow.inset) {
|
|
continue;
|
|
}
|
|
|
|
nsRect shadowRect =
|
|
nsCSSRendering::GetBoxShadowInnerPaddingRect(aFrame, aBorderRect);
|
|
RectCornerRadii innerRadii;
|
|
nsCSSRendering::GetShadowInnerRadii(aFrame, aBorderRect, innerRadii);
|
|
|
|
// Now translate everything to device pixels.
|
|
LayoutDeviceRect deviceBoxRect =
|
|
LayoutDeviceRect::FromAppUnits(shadowRect, appUnitsPerDevPixel);
|
|
wr::LayoutRect deviceClipRect = wr::ToLayoutRect(clipRect);
|
|
sRGBColor shadowColor =
|
|
nsCSSRendering::GetShadowColor(shadow.base, aFrame, 1.0);
|
|
|
|
LayoutDevicePoint shadowOffset = LayoutDevicePoint::FromAppUnits(
|
|
nsPoint(shadow.base.horizontal.ToAppUnits(),
|
|
shadow.base.vertical.ToAppUnits()),
|
|
appUnitsPerDevPixel);
|
|
|
|
float blurRadius =
|
|
float(shadow.base.blur.ToAppUnits()) / float(appUnitsPerDevPixel);
|
|
|
|
wr::BorderRadius borderRadius = wr::ToBorderRadius(
|
|
LayoutDeviceSize::FromUnknownSize(innerRadii.TopLeft()),
|
|
LayoutDeviceSize::FromUnknownSize(innerRadii.TopRight()),
|
|
LayoutDeviceSize::FromUnknownSize(innerRadii.BottomLeft()),
|
|
LayoutDeviceSize::FromUnknownSize(innerRadii.BottomRight()));
|
|
// NOTE: Any spread radius > 0 will render nothing. WR Bug.
|
|
float spreadRadius =
|
|
float(shadow.spread.ToAppUnits()) / float(appUnitsPerDevPixel);
|
|
|
|
aBuilder.PushBoxShadow(
|
|
wr::ToLayoutRect(deviceBoxRect), deviceClipRect,
|
|
!aFrame->BackfaceIsHidden(), wr::ToLayoutRect(deviceBoxRect),
|
|
wr::ToLayoutVector2D(shadowOffset),
|
|
wr::ToColorF(ToDeviceColor(shadowColor)), blurRadius, spreadRadius,
|
|
borderRadius, wr::BoxShadowClipMode::Inset);
|
|
}
|
|
}
|
|
|
|
bool nsDisplayBoxShadowInner::CreateWebRenderCommands(
|
|
wr::DisplayListBuilder& aBuilder, wr::IpcResourceUpdateQueue& aResources,
|
|
const StackingContextHelper& aSc, RenderRootStateManager* aManager,
|
|
nsDisplayListBuilder* aDisplayListBuilder) {
|
|
if (!CanCreateWebRenderCommands(aDisplayListBuilder, mFrame,
|
|
ToReferenceFrame())) {
|
|
return false;
|
|
}
|
|
|
|
bool snap;
|
|
nsRect visible = GetBounds(aDisplayListBuilder, &snap);
|
|
nsPoint offset = ToReferenceFrame();
|
|
nsRect borderRect = nsRect(offset, mFrame->GetSize());
|
|
nsDisplayBoxShadowInner::CreateInsetBoxShadowWebRenderCommands(
|
|
aBuilder, aSc, visible, mFrame, borderRect);
|
|
|
|
return true;
|
|
}
|
|
|
|
nsDisplayWrapList::nsDisplayWrapList(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame, nsDisplayList* aList)
|
|
: nsDisplayWrapList(aBuilder, aFrame, aList,
|
|
aBuilder->CurrentActiveScrolledRoot(), false) {}
|
|
|
|
nsDisplayWrapList::nsDisplayWrapList(
|
|
nsDisplayListBuilder* aBuilder, nsIFrame* aFrame, nsDisplayList* aList,
|
|
const ActiveScrolledRoot* aActiveScrolledRoot, bool aClearClipChain)
|
|
: nsPaintedDisplayItem(aBuilder, aFrame, aActiveScrolledRoot),
|
|
mList(aBuilder),
|
|
mFrameActiveScrolledRoot(aBuilder->CurrentActiveScrolledRoot()),
|
|
mOverrideZIndex(0),
|
|
mHasZIndexOverride(false),
|
|
mClearingClipChain(aClearClipChain) {
|
|
MOZ_COUNT_CTOR(nsDisplayWrapList);
|
|
|
|
mBaseBuildingRect = GetBuildingRect();
|
|
|
|
mListPtr = &mList;
|
|
mListPtr->AppendToTop(aList);
|
|
mOriginalClipChain = mClipChain;
|
|
nsDisplayWrapList::UpdateBounds(aBuilder);
|
|
}
|
|
|
|
nsDisplayWrapList::nsDisplayWrapList(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame, nsDisplayItem* aItem)
|
|
: nsPaintedDisplayItem(aBuilder, aFrame,
|
|
aBuilder->CurrentActiveScrolledRoot()),
|
|
mList(aBuilder),
|
|
mOverrideZIndex(0),
|
|
mHasZIndexOverride(false) {
|
|
MOZ_COUNT_CTOR(nsDisplayWrapList);
|
|
|
|
mBaseBuildingRect = GetBuildingRect();
|
|
|
|
mListPtr = &mList;
|
|
mListPtr->AppendToTop(aItem);
|
|
mOriginalClipChain = mClipChain;
|
|
nsDisplayWrapList::UpdateBounds(aBuilder);
|
|
|
|
if (!aFrame || !aFrame->IsTransformed()) {
|
|
return;
|
|
}
|
|
|
|
// See the previous nsDisplayWrapList constructor
|
|
if (aItem->Frame() == aFrame) {
|
|
mToReferenceFrame = aItem->ToReferenceFrame();
|
|
}
|
|
|
|
nsRect visible = aBuilder->GetVisibleRect() +
|
|
aBuilder->GetCurrentFrameOffsetToReferenceFrame();
|
|
|
|
SetBuildingRect(visible);
|
|
}
|
|
|
|
nsDisplayWrapList::~nsDisplayWrapList() { MOZ_COUNT_DTOR(nsDisplayWrapList); }
|
|
|
|
void nsDisplayWrapList::HitTest(nsDisplayListBuilder* aBuilder,
|
|
const nsRect& aRect, HitTestState* aState,
|
|
nsTArray<nsIFrame*>* aOutFrames) {
|
|
mListPtr->HitTest(aBuilder, aRect, aState, aOutFrames);
|
|
}
|
|
|
|
nsRect nsDisplayWrapList::GetBounds(nsDisplayListBuilder* aBuilder,
|
|
bool* aSnap) const {
|
|
*aSnap = false;
|
|
return mBounds;
|
|
}
|
|
|
|
nsRegion nsDisplayWrapList::GetOpaqueRegion(nsDisplayListBuilder* aBuilder,
|
|
bool* aSnap) const {
|
|
*aSnap = false;
|
|
bool snap;
|
|
return ::mozilla::GetOpaqueRegion(aBuilder, GetChildren(),
|
|
GetBounds(aBuilder, &snap));
|
|
}
|
|
|
|
Maybe<nscolor> nsDisplayWrapList::IsUniform(
|
|
nsDisplayListBuilder* aBuilder) const {
|
|
// We could try to do something but let's conservatively just return Nothing.
|
|
return Nothing();
|
|
}
|
|
|
|
void nsDisplayWrapper::Paint(nsDisplayListBuilder* aBuilder, gfxContext* aCtx) {
|
|
NS_ERROR("nsDisplayWrapper should have been flattened away for painting");
|
|
}
|
|
|
|
nsRect nsDisplayWrapList::GetComponentAlphaBounds(
|
|
nsDisplayListBuilder* aBuilder) const {
|
|
return mListPtr->GetComponentAlphaBounds(aBuilder);
|
|
}
|
|
|
|
bool nsDisplayWrapList::CreateWebRenderCommandsNewClipListOption(
|
|
wr::DisplayListBuilder& aBuilder, wr::IpcResourceUpdateQueue& aResources,
|
|
const StackingContextHelper& aSc, RenderRootStateManager* aManager,
|
|
nsDisplayListBuilder* aDisplayListBuilder, bool aNewClipList) {
|
|
aManager->CommandBuilder().CreateWebRenderCommandsFromDisplayList(
|
|
GetChildren(), this, aDisplayListBuilder, aSc, aBuilder, aResources,
|
|
aNewClipList);
|
|
return true;
|
|
}
|
|
|
|
static nsresult WrapDisplayList(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame, nsDisplayList* aList,
|
|
nsDisplayItemWrapper* aWrapper) {
|
|
if (!aList->GetTop()) {
|
|
return NS_OK;
|
|
}
|
|
nsDisplayItem* item = aWrapper->WrapList(aBuilder, aFrame, aList);
|
|
if (!item) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
// aList was emptied
|
|
aList->AppendToTop(item);
|
|
return NS_OK;
|
|
}
|
|
|
|
static nsresult WrapEachDisplayItem(nsDisplayListBuilder* aBuilder,
|
|
nsDisplayList* aList,
|
|
nsDisplayItemWrapper* aWrapper) {
|
|
for (nsDisplayItem* item : aList->TakeItems()) {
|
|
item = aWrapper->WrapItem(aBuilder, item);
|
|
if (!item) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
aList->AppendToTop(item);
|
|
}
|
|
// aList was emptied
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult nsDisplayItemWrapper::WrapLists(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame,
|
|
const nsDisplayListSet& aIn,
|
|
const nsDisplayListSet& aOut) {
|
|
nsresult rv = WrapListsInPlace(aBuilder, aFrame, aIn);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
if (&aOut == &aIn) {
|
|
return NS_OK;
|
|
}
|
|
aOut.BorderBackground()->AppendToTop(aIn.BorderBackground());
|
|
aOut.BlockBorderBackgrounds()->AppendToTop(aIn.BlockBorderBackgrounds());
|
|
aOut.Floats()->AppendToTop(aIn.Floats());
|
|
aOut.Content()->AppendToTop(aIn.Content());
|
|
aOut.PositionedDescendants()->AppendToTop(aIn.PositionedDescendants());
|
|
aOut.Outlines()->AppendToTop(aIn.Outlines());
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult nsDisplayItemWrapper::WrapListsInPlace(
|
|
nsDisplayListBuilder* aBuilder, nsIFrame* aFrame,
|
|
const nsDisplayListSet& aLists) {
|
|
nsresult rv;
|
|
if (WrapBorderBackground()) {
|
|
// Our border-backgrounds are in-flow
|
|
rv = WrapDisplayList(aBuilder, aFrame, aLists.BorderBackground(), this);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
// Our block border-backgrounds are in-flow
|
|
rv = WrapDisplayList(aBuilder, aFrame, aLists.BlockBorderBackgrounds(), this);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
// The floats are not in flow
|
|
rv = WrapEachDisplayItem(aBuilder, aLists.Floats(), this);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
// Our child content is in flow
|
|
rv = WrapDisplayList(aBuilder, aFrame, aLists.Content(), this);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
// The positioned descendants may not be in-flow
|
|
rv = WrapEachDisplayItem(aBuilder, aLists.PositionedDescendants(), this);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
// The outlines may not be in-flow
|
|
return WrapEachDisplayItem(aBuilder, aLists.Outlines(), this);
|
|
}
|
|
|
|
nsDisplayOpacity::nsDisplayOpacity(
|
|
nsDisplayListBuilder* aBuilder, nsIFrame* aFrame, nsDisplayList* aList,
|
|
const ActiveScrolledRoot* aActiveScrolledRoot, bool aForEventsOnly,
|
|
bool aNeedsActiveLayer, bool aWrapsBackdropFilter)
|
|
: nsDisplayWrapList(aBuilder, aFrame, aList, aActiveScrolledRoot, true),
|
|
mOpacity(aFrame->StyleEffects()->mOpacity),
|
|
mForEventsOnly(aForEventsOnly),
|
|
mNeedsActiveLayer(aNeedsActiveLayer),
|
|
mChildOpacityState(ChildOpacityState::Unknown),
|
|
mWrapsBackdropFilter(aWrapsBackdropFilter) {
|
|
MOZ_COUNT_CTOR(nsDisplayOpacity);
|
|
}
|
|
|
|
void nsDisplayOpacity::HitTest(nsDisplayListBuilder* aBuilder,
|
|
const nsRect& aRect,
|
|
nsDisplayItem::HitTestState* aState,
|
|
nsTArray<nsIFrame*>* aOutFrames) {
|
|
AutoRestore<float> opacity(aState->mCurrentOpacity);
|
|
aState->mCurrentOpacity *= mOpacity;
|
|
|
|
// TODO(emilio): special-casing zero is a bit arbitrary... Maybe we should
|
|
// only consider fully opaque items? Or make this configurable somehow?
|
|
if (aBuilder->HitTestIsForVisibility() && mOpacity == 0.0f) {
|
|
return;
|
|
}
|
|
nsDisplayWrapList::HitTest(aBuilder, aRect, aState, aOutFrames);
|
|
}
|
|
|
|
nsRegion nsDisplayOpacity::GetOpaqueRegion(nsDisplayListBuilder* aBuilder,
|
|
bool* aSnap) const {
|
|
*aSnap = false;
|
|
// The only time where mOpacity == 1.0 should be when we have will-change.
|
|
// We could report this as opaque then but when the will-change value starts
|
|
// animating the element would become non opaque and could cause repaints.
|
|
return nsRegion();
|
|
}
|
|
|
|
void nsDisplayOpacity::Paint(nsDisplayListBuilder* aBuilder, gfxContext* aCtx) {
|
|
if (GetOpacity() == 0.0f) {
|
|
return;
|
|
}
|
|
|
|
if (GetOpacity() == 1.0f) {
|
|
GetChildren()->Paint(aBuilder, aCtx,
|
|
mFrame->PresContext()->AppUnitsPerDevPixel());
|
|
return;
|
|
}
|
|
|
|
// TODO: Compute a bounds rect to pass to PushLayer for a smaller
|
|
// allocation.
|
|
aCtx->GetDrawTarget()->PushLayer(false, GetOpacity(), nullptr, gfx::Matrix());
|
|
GetChildren()->Paint(aBuilder, aCtx,
|
|
mFrame->PresContext()->AppUnitsPerDevPixel());
|
|
aCtx->GetDrawTarget()->PopLayer();
|
|
}
|
|
|
|
/* static */
|
|
bool nsDisplayOpacity::NeedsActiveLayer(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame) {
|
|
return EffectCompositor::HasAnimationsForCompositor(
|
|
aFrame, DisplayItemType::TYPE_OPACITY) ||
|
|
(ActiveLayerTracker::IsStyleAnimated(
|
|
aBuilder, aFrame, nsCSSPropertyIDSet::OpacityProperties()));
|
|
}
|
|
|
|
bool nsDisplayOpacity::CanApplyOpacity(WebRenderLayerManager* aManager,
|
|
nsDisplayListBuilder* aBuilder) const {
|
|
return !EffectCompositor::HasAnimationsForCompositor(
|
|
mFrame, DisplayItemType::TYPE_OPACITY);
|
|
}
|
|
|
|
// Only try folding our opacity down if we have at most |kOpacityMaxChildCount|
|
|
// children that don't overlap and can all apply the opacity to themselves.
|
|
static const size_t kOpacityMaxChildCount = 3;
|
|
|
|
// |kOpacityMaxListSize| defines an early exit condition for opacity items that
|
|
// are likely have more child items than |kOpacityMaxChildCount|.
|
|
static const size_t kOpacityMaxListSize = kOpacityMaxChildCount * 2;
|
|
|
|
/**
|
|
* Recursively iterates through |aList| and collects at most
|
|
* |kOpacityMaxChildCount| display item pointers to items that return true for
|
|
* CanApplyOpacity(). The item pointers are added to |aArray|.
|
|
*
|
|
* LayerEventRegions and WrapList items are ignored.
|
|
*
|
|
* We need to do this recursively, because the child display items might contain
|
|
* nested nsDisplayWrapLists.
|
|
*
|
|
* Returns false if there are more than |kOpacityMaxChildCount| items, or if an
|
|
* item that returns false for CanApplyOpacity() is encountered.
|
|
* Otherwise returns true.
|
|
*/
|
|
static bool CollectItemsWithOpacity(WebRenderLayerManager* aManager,
|
|
nsDisplayListBuilder* aBuilder,
|
|
nsDisplayList* aList,
|
|
nsTArray<nsPaintedDisplayItem*>& aArray) {
|
|
if (aList->Length() > kOpacityMaxListSize) {
|
|
// Exit early, since |aList| will likely contain more than
|
|
// |kOpacityMaxChildCount| items.
|
|
return false;
|
|
}
|
|
|
|
for (nsDisplayItem* i : *aList) {
|
|
const DisplayItemType type = i->GetType();
|
|
|
|
if (type == DisplayItemType::TYPE_COMPOSITOR_HITTEST_INFO) {
|
|
continue;
|
|
}
|
|
|
|
// Descend only into wraplists.
|
|
if (type == DisplayItemType::TYPE_WRAP_LIST ||
|
|
type == DisplayItemType::TYPE_CONTAINER) {
|
|
// The current display item has children, process them first.
|
|
if (!CollectItemsWithOpacity(aManager, aBuilder, i->GetChildren(),
|
|
aArray)) {
|
|
return false;
|
|
}
|
|
|
|
continue;
|
|
}
|
|
|
|
if (aArray.Length() == kOpacityMaxChildCount) {
|
|
return false;
|
|
}
|
|
|
|
auto* item = i->AsPaintedDisplayItem();
|
|
if (!item || !item->CanApplyOpacity(aManager, aBuilder)) {
|
|
return false;
|
|
}
|
|
|
|
aArray.AppendElement(item);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool nsDisplayOpacity::CanApplyToChildren(WebRenderLayerManager* aManager,
|
|
nsDisplayListBuilder* aBuilder) {
|
|
if (mChildOpacityState == ChildOpacityState::Deferred) {
|
|
return false;
|
|
}
|
|
|
|
// Iterate through the child display list and copy at most
|
|
// |kOpacityMaxChildCount| child display item pointers to a temporary list.
|
|
AutoTArray<nsPaintedDisplayItem*, kOpacityMaxChildCount> items;
|
|
if (!CollectItemsWithOpacity(aManager, aBuilder, &mList, items)) {
|
|
mChildOpacityState = ChildOpacityState::Deferred;
|
|
return false;
|
|
}
|
|
|
|
struct {
|
|
nsPaintedDisplayItem* item{};
|
|
nsRect bounds;
|
|
} children[kOpacityMaxChildCount];
|
|
|
|
bool snap;
|
|
size_t childCount = 0;
|
|
for (nsPaintedDisplayItem* item : items) {
|
|
children[childCount].item = item;
|
|
children[childCount].bounds = item->GetBounds(aBuilder, &snap);
|
|
childCount++;
|
|
}
|
|
|
|
for (size_t i = 0; i < childCount; i++) {
|
|
for (size_t j = i + 1; j < childCount; j++) {
|
|
if (children[i].bounds.Intersects(children[j].bounds)) {
|
|
mChildOpacityState = ChildOpacityState::Deferred;
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
mChildOpacityState = ChildOpacityState::Applied;
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Returns true if this nsDisplayOpacity contains only a filter or a mask item
|
|
* that has the same frame as the opacity item, and that supports painting with
|
|
* opacity. In this case the opacity item can be optimized away.
|
|
*/
|
|
bool nsDisplayOpacity::ApplyToMask() {
|
|
if (mList.Length() != 1) {
|
|
return false;
|
|
}
|
|
|
|
nsDisplayItem* item = mList.GetBottom();
|
|
if (item->Frame() != mFrame) {
|
|
// The effect item needs to have the same frame as the opacity item.
|
|
return false;
|
|
}
|
|
|
|
const DisplayItemType type = item->GetType();
|
|
if (type == DisplayItemType::TYPE_MASK) {
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool nsDisplayOpacity::CanApplyOpacityToChildren(
|
|
WebRenderLayerManager* aManager, nsDisplayListBuilder* aBuilder,
|
|
float aInheritedOpacity) {
|
|
if (mFrame->GetPrevContinuation() || mFrame->GetNextContinuation() ||
|
|
mFrame->HasAnyStateBits(NS_FRAME_PART_OF_IBSPLIT)) {
|
|
// If we've been split, then we might need to merge, so
|
|
// don't flatten us away.
|
|
return false;
|
|
}
|
|
|
|
if (mNeedsActiveLayer || mOpacity == 0.0) {
|
|
// If our opacity is zero then we'll discard all descendant display items
|
|
// except for layer event regions, so there's no point in doing this
|
|
// optimization (and if we do do it, then invalidations of those descendants
|
|
// might trigger repainting).
|
|
return false;
|
|
}
|
|
|
|
if (mList.IsEmpty()) {
|
|
return false;
|
|
}
|
|
|
|
// We can only flatten opacity items into a mask if we haven't
|
|
// already flattened an earlier ancestor, since the SVG code pulls the opacity
|
|
// from style directly, and won't know about the outer opacity value.
|
|
if (aInheritedOpacity == 1.0f && ApplyToMask()) {
|
|
MOZ_ASSERT(SVGIntegrationUtils::UsingEffectsForFrame(mFrame));
|
|
mChildOpacityState = ChildOpacityState::Applied;
|
|
return true;
|
|
}
|
|
|
|
// Return true if we successfully applied opacity to child items.
|
|
return CanApplyToChildren(aManager, aBuilder);
|
|
}
|
|
|
|
void nsDisplayOpacity::ComputeInvalidationRegion(
|
|
nsDisplayListBuilder* aBuilder, const nsDisplayItemGeometry* aGeometry,
|
|
nsRegion* aInvalidRegion) const {
|
|
const auto* geometry =
|
|
static_cast<const nsDisplayOpacityGeometry*>(aGeometry);
|
|
|
|
bool snap;
|
|
if (mOpacity != geometry->mOpacity) {
|
|
aInvalidRegion->Or(GetBounds(aBuilder, &snap), geometry->mBounds);
|
|
}
|
|
}
|
|
|
|
void nsDisplayOpacity::WriteDebugInfo(std::stringstream& aStream) {
|
|
aStream << " (opacity " << mOpacity << ", mChildOpacityState: ";
|
|
switch (mChildOpacityState) {
|
|
case ChildOpacityState::Unknown:
|
|
aStream << "Unknown";
|
|
break;
|
|
case ChildOpacityState::Applied:
|
|
aStream << "Applied";
|
|
break;
|
|
case ChildOpacityState::Deferred:
|
|
aStream << "Deferred";
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
aStream << ")";
|
|
}
|
|
|
|
bool nsDisplayOpacity::CreateWebRenderCommands(
|
|
wr::DisplayListBuilder& aBuilder, wr::IpcResourceUpdateQueue& aResources,
|
|
const StackingContextHelper& aSc, RenderRootStateManager* aManager,
|
|
nsDisplayListBuilder* aDisplayListBuilder) {
|
|
MOZ_ASSERT(mChildOpacityState != ChildOpacityState::Applied);
|
|
float oldOpacity = aBuilder.GetInheritedOpacity();
|
|
const DisplayItemClipChain* oldClipChain = aBuilder.GetInheritedClipChain();
|
|
aBuilder.SetInheritedOpacity(1.0f);
|
|
aBuilder.SetInheritedClipChain(nullptr);
|
|
float opacity = mOpacity * oldOpacity;
|
|
float* opacityForSC = &opacity;
|
|
|
|
uint64_t animationsId =
|
|
AddAnimationsForWebRender(this, aManager, aDisplayListBuilder);
|
|
wr::WrAnimationProperty prop{
|
|
wr::WrAnimationType::Opacity,
|
|
animationsId,
|
|
};
|
|
|
|
wr::StackingContextParams params;
|
|
params.animation = animationsId ? &prop : nullptr;
|
|
params.opacity = opacityForSC;
|
|
params.clip =
|
|
wr::WrStackingContextClip::ClipChain(aBuilder.CurrentClipChainId());
|
|
if (mWrapsBackdropFilter) {
|
|
params.flags |= wr::StackingContextFlags::WRAPS_BACKDROP_FILTER;
|
|
}
|
|
StackingContextHelper sc(aSc, GetActiveScrolledRoot(), mFrame, this, aBuilder,
|
|
params);
|
|
|
|
aManager->CommandBuilder().CreateWebRenderCommandsFromDisplayList(
|
|
&mList, this, aDisplayListBuilder, sc, aBuilder, aResources);
|
|
aBuilder.SetInheritedOpacity(oldOpacity);
|
|
aBuilder.SetInheritedClipChain(oldClipChain);
|
|
return true;
|
|
}
|
|
|
|
nsDisplayBlendMode::nsDisplayBlendMode(
|
|
nsDisplayListBuilder* aBuilder, nsIFrame* aFrame, nsDisplayList* aList,
|
|
StyleBlend aBlendMode, const ActiveScrolledRoot* aActiveScrolledRoot,
|
|
const bool aIsForBackground)
|
|
: nsDisplayWrapList(aBuilder, aFrame, aList, aActiveScrolledRoot, true),
|
|
mBlendMode(aBlendMode),
|
|
mIsForBackground(aIsForBackground) {
|
|
MOZ_COUNT_CTOR(nsDisplayBlendMode);
|
|
}
|
|
|
|
nsRegion nsDisplayBlendMode::GetOpaqueRegion(nsDisplayListBuilder* aBuilder,
|
|
bool* aSnap) const {
|
|
*aSnap = false;
|
|
// We are never considered opaque
|
|
return nsRegion();
|
|
}
|
|
|
|
bool nsDisplayBlendMode::CreateWebRenderCommands(
|
|
wr::DisplayListBuilder& aBuilder, wr::IpcResourceUpdateQueue& aResources,
|
|
const StackingContextHelper& aSc, RenderRootStateManager* aManager,
|
|
nsDisplayListBuilder* aDisplayListBuilder) {
|
|
wr::StackingContextParams params;
|
|
params.mix_blend_mode =
|
|
wr::ToMixBlendMode(nsCSSRendering::GetGFXBlendMode(mBlendMode));
|
|
params.clip =
|
|
wr::WrStackingContextClip::ClipChain(aBuilder.CurrentClipChainId());
|
|
StackingContextHelper sc(aSc, GetActiveScrolledRoot(), mFrame, this, aBuilder,
|
|
params);
|
|
|
|
return nsDisplayWrapList::CreateWebRenderCommands(
|
|
aBuilder, aResources, sc, aManager, aDisplayListBuilder);
|
|
}
|
|
|
|
void nsDisplayBlendMode::Paint(nsDisplayListBuilder* aBuilder,
|
|
gfxContext* aCtx) {
|
|
// This should be switched to use PushLayerWithBlend, once it's
|
|
// been implemented for all DrawTarget backends.
|
|
DrawTarget* dt = aCtx->GetDrawTarget();
|
|
int32_t appUnitsPerDevPixel = mFrame->PresContext()->AppUnitsPerDevPixel();
|
|
Rect rect = NSRectToRect(GetPaintRect(aBuilder, aCtx), appUnitsPerDevPixel);
|
|
rect.RoundOut();
|
|
|
|
// Create a temporary DrawTarget that is clipped to the area that
|
|
// we're going to draw to. This will include the same transform as
|
|
// is currently on |dt|.
|
|
RefPtr<DrawTarget> temp =
|
|
dt->CreateClippedDrawTarget(rect, SurfaceFormat::B8G8R8A8);
|
|
if (!temp) {
|
|
return;
|
|
}
|
|
|
|
gfxContext ctx(temp, /* aPreserveTransform */ true);
|
|
|
|
GetChildren()->Paint(aBuilder, &ctx,
|
|
mFrame->PresContext()->AppUnitsPerDevPixel());
|
|
|
|
// Draw the temporary DT to the real destination, applying the blend mode, but
|
|
// no transform.
|
|
temp->Flush();
|
|
RefPtr<SourceSurface> surface = temp->Snapshot();
|
|
gfxContextMatrixAutoSaveRestore saveMatrix(aCtx);
|
|
dt->SetTransform(Matrix());
|
|
dt->DrawSurface(
|
|
surface, Rect(surface->GetRect()), Rect(surface->GetRect()),
|
|
DrawSurfaceOptions(),
|
|
DrawOptions(1.0f, nsCSSRendering::GetGFXBlendMode(mBlendMode)));
|
|
}
|
|
|
|
gfx::CompositionOp nsDisplayBlendMode::BlendMode() {
|
|
return nsCSSRendering::GetGFXBlendMode(mBlendMode);
|
|
}
|
|
|
|
bool nsDisplayBlendMode::CanMerge(const nsDisplayItem* aItem) const {
|
|
// Items for the same content element should be merged into a single
|
|
// compositing group.
|
|
if (!HasDifferentFrame(aItem) || !HasSameTypeAndClip(aItem) ||
|
|
!HasSameContent(aItem)) {
|
|
return false;
|
|
}
|
|
|
|
const auto* item = static_cast<const nsDisplayBlendMode*>(aItem);
|
|
if (mIsForBackground || item->mIsForBackground) {
|
|
// Don't merge background-blend-mode items
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/* static */
|
|
nsDisplayBlendContainer* nsDisplayBlendContainer::CreateForMixBlendMode(
|
|
nsDisplayListBuilder* aBuilder, nsIFrame* aFrame, nsDisplayList* aList,
|
|
const ActiveScrolledRoot* aActiveScrolledRoot) {
|
|
return MakeDisplayItem<nsDisplayBlendContainer>(aBuilder, aFrame, aList,
|
|
aActiveScrolledRoot, false);
|
|
}
|
|
|
|
/* static */
|
|
nsDisplayBlendContainer* nsDisplayBlendContainer::CreateForBackgroundBlendMode(
|
|
nsDisplayListBuilder* aBuilder, nsIFrame* aFrame, nsIFrame* aSecondaryFrame,
|
|
nsDisplayList* aList, const ActiveScrolledRoot* aActiveScrolledRoot) {
|
|
if (aSecondaryFrame) {
|
|
auto type = GetTableTypeFromFrame(aFrame);
|
|
auto index = static_cast<uint16_t>(type);
|
|
|
|
return MakeDisplayItemWithIndex<nsDisplayTableBlendContainer>(
|
|
aBuilder, aSecondaryFrame, index, aList, aActiveScrolledRoot, true,
|
|
aFrame);
|
|
}
|
|
|
|
return MakeDisplayItemWithIndex<nsDisplayBlendContainer>(
|
|
aBuilder, aFrame, 1, aList, aActiveScrolledRoot, true);
|
|
}
|
|
|
|
nsDisplayBlendContainer::nsDisplayBlendContainer(
|
|
nsDisplayListBuilder* aBuilder, nsIFrame* aFrame, nsDisplayList* aList,
|
|
const ActiveScrolledRoot* aActiveScrolledRoot, bool aIsForBackground)
|
|
: nsDisplayWrapList(aBuilder, aFrame, aList, aActiveScrolledRoot, true),
|
|
mIsForBackground(aIsForBackground) {
|
|
MOZ_COUNT_CTOR(nsDisplayBlendContainer);
|
|
}
|
|
|
|
void nsDisplayBlendContainer::Paint(nsDisplayListBuilder* aBuilder,
|
|
gfxContext* aCtx) {
|
|
aCtx->GetDrawTarget()->PushLayer(false, 1.0, nullptr, gfx::Matrix());
|
|
GetChildren()->Paint(aBuilder, aCtx,
|
|
mFrame->PresContext()->AppUnitsPerDevPixel());
|
|
aCtx->GetDrawTarget()->PopLayer();
|
|
}
|
|
|
|
bool nsDisplayBlendContainer::CreateWebRenderCommands(
|
|
wr::DisplayListBuilder& aBuilder, wr::IpcResourceUpdateQueue& aResources,
|
|
const StackingContextHelper& aSc, RenderRootStateManager* aManager,
|
|
nsDisplayListBuilder* aDisplayListBuilder) {
|
|
wr::StackingContextParams params;
|
|
params.flags |= wr::StackingContextFlags::IS_BLEND_CONTAINER;
|
|
params.clip =
|
|
wr::WrStackingContextClip::ClipChain(aBuilder.CurrentClipChainId());
|
|
StackingContextHelper sc(aSc, GetActiveScrolledRoot(), mFrame, this, aBuilder,
|
|
params);
|
|
|
|
return nsDisplayWrapList::CreateWebRenderCommands(
|
|
aBuilder, aResources, sc, aManager, aDisplayListBuilder);
|
|
}
|
|
|
|
nsDisplayOwnLayer::nsDisplayOwnLayer(
|
|
nsDisplayListBuilder* aBuilder, nsIFrame* aFrame, nsDisplayList* aList,
|
|
const ActiveScrolledRoot* aActiveScrolledRoot,
|
|
nsDisplayOwnLayerFlags aFlags, const ScrollbarData& aScrollbarData,
|
|
bool aForceActive, bool aClearClipChain)
|
|
: nsDisplayWrapList(aBuilder, aFrame, aList, aActiveScrolledRoot,
|
|
aClearClipChain),
|
|
mFlags(aFlags),
|
|
mScrollbarData(aScrollbarData),
|
|
mForceActive(aForceActive),
|
|
mWrAnimationId(0) {
|
|
MOZ_COUNT_CTOR(nsDisplayOwnLayer);
|
|
}
|
|
|
|
bool nsDisplayOwnLayer::IsScrollThumbLayer() const {
|
|
return mScrollbarData.mScrollbarLayerType == ScrollbarLayerType::Thumb;
|
|
}
|
|
|
|
bool nsDisplayOwnLayer::IsScrollbarContainer() const {
|
|
return mScrollbarData.mScrollbarLayerType == ScrollbarLayerType::Container;
|
|
}
|
|
|
|
bool nsDisplayOwnLayer::IsRootScrollbarContainer() const {
|
|
return IsScrollbarContainer() && IsScrollbarLayerForRoot();
|
|
}
|
|
|
|
bool nsDisplayOwnLayer::IsScrollbarLayerForRoot() const {
|
|
return mFrame->PresContext()->IsRootContentDocumentCrossProcess() &&
|
|
mScrollbarData.mTargetViewId ==
|
|
nsLayoutUtils::ScrollIdForRootScrollFrame(mFrame->PresContext());
|
|
}
|
|
|
|
bool nsDisplayOwnLayer::IsZoomingLayer() const {
|
|
return GetType() == DisplayItemType::TYPE_ASYNC_ZOOM;
|
|
}
|
|
|
|
bool nsDisplayOwnLayer::IsFixedPositionLayer() const {
|
|
return GetType() == DisplayItemType::TYPE_FIXED_POSITION ||
|
|
GetType() == DisplayItemType::TYPE_TABLE_FIXED_POSITION;
|
|
}
|
|
|
|
bool nsDisplayOwnLayer::IsStickyPositionLayer() const {
|
|
return GetType() == DisplayItemType::TYPE_STICKY_POSITION;
|
|
}
|
|
|
|
bool nsDisplayOwnLayer::HasDynamicToolbar() const {
|
|
if (!mFrame->PresContext()->IsRootContentDocumentCrossProcess()) {
|
|
return false;
|
|
}
|
|
return mFrame->PresContext()->HasDynamicToolbar() ||
|
|
// For tests on Android, this pref is set to simulate the dynamic
|
|
// toolbar
|
|
StaticPrefs::apz_fixed_margin_override_enabled();
|
|
}
|
|
|
|
bool nsDisplayOwnLayer::CreateWebRenderCommands(
|
|
wr::DisplayListBuilder& aBuilder, wr::IpcResourceUpdateQueue& aResources,
|
|
const StackingContextHelper& aSc, RenderRootStateManager* aManager,
|
|
nsDisplayListBuilder* aDisplayListBuilder) {
|
|
Maybe<wr::WrAnimationProperty> prop;
|
|
bool needsProp = aManager->LayerManager()->AsyncPanZoomEnabled() &&
|
|
(IsScrollThumbLayer() || IsZoomingLayer() ||
|
|
ShouldGetFixedAnimationId() ||
|
|
(IsRootScrollbarContainer() && HasDynamicToolbar()));
|
|
|
|
if (needsProp) {
|
|
// APZ is enabled and this is a scroll thumb or zooming layer, so we need
|
|
// to create and set an animation id. That way APZ can adjust the position/
|
|
// zoom of this content asynchronously as needed.
|
|
RefPtr<WebRenderAPZAnimationData> animationData =
|
|
aManager->CommandBuilder()
|
|
.CreateOrRecycleWebRenderUserData<WebRenderAPZAnimationData>(this);
|
|
mWrAnimationId = animationData->GetAnimationId();
|
|
|
|
prop.emplace();
|
|
prop->id = mWrAnimationId;
|
|
prop->key = wr::SpatialKey(uint64_t(mFrame), GetPerFrameKey(),
|
|
wr::SpatialKeyKind::APZ);
|
|
prop->effect_type = wr::WrAnimationType::Transform;
|
|
}
|
|
|
|
wr::StackingContextParams params;
|
|
params.animation = prop.ptrOr(nullptr);
|
|
params.clip =
|
|
wr::WrStackingContextClip::ClipChain(aBuilder.CurrentClipChainId());
|
|
if (IsScrollbarContainer() && IsRootScrollbarContainer()) {
|
|
params.prim_flags |= wr::PrimitiveFlags::IS_SCROLLBAR_CONTAINER;
|
|
}
|
|
if (IsZoomingLayer() ||
|
|
(ShouldGetFixedAnimationId() ||
|
|
(IsRootScrollbarContainer() && HasDynamicToolbar()))) {
|
|
params.is_2d_scale_translation = true;
|
|
params.should_snap = true;
|
|
}
|
|
|
|
StackingContextHelper sc(aSc, GetActiveScrolledRoot(), mFrame, this, aBuilder,
|
|
params);
|
|
|
|
nsDisplayWrapList::CreateWebRenderCommands(aBuilder, aResources, sc, aManager,
|
|
aDisplayListBuilder);
|
|
return true;
|
|
}
|
|
|
|
bool nsDisplayOwnLayer::UpdateScrollData(WebRenderScrollData* aData,
|
|
WebRenderLayerScrollData* aLayerData) {
|
|
bool isRelevantToApz = (IsScrollThumbLayer() || IsScrollbarContainer() ||
|
|
IsZoomingLayer() || ShouldGetFixedAnimationId());
|
|
|
|
if (!isRelevantToApz) {
|
|
return false;
|
|
}
|
|
|
|
if (!aLayerData) {
|
|
return true;
|
|
}
|
|
|
|
if (IsZoomingLayer()) {
|
|
aLayerData->SetZoomAnimationId(mWrAnimationId);
|
|
return true;
|
|
}
|
|
|
|
if (IsFixedPositionLayer() && ShouldGetFixedAnimationId()) {
|
|
aLayerData->SetFixedPositionAnimationId(mWrAnimationId);
|
|
return true;
|
|
}
|
|
|
|
MOZ_ASSERT(IsScrollbarContainer() || IsScrollThumbLayer());
|
|
|
|
aLayerData->SetScrollbarData(mScrollbarData);
|
|
|
|
if (IsRootScrollbarContainer() && HasDynamicToolbar()) {
|
|
aLayerData->SetScrollbarAnimationId(mWrAnimationId);
|
|
return true;
|
|
}
|
|
|
|
if (IsScrollThumbLayer()) {
|
|
aLayerData->SetScrollbarAnimationId(mWrAnimationId);
|
|
LayoutDeviceRect bounds = LayoutDeviceIntRect::FromAppUnits(
|
|
mBounds, mFrame->PresContext()->AppUnitsPerDevPixel());
|
|
// Subframe scrollbars are subject to the pinch-zoom scale,
|
|
// but root scrollbars are not because they are outside of the
|
|
// region that is zoomed.
|
|
const float resolution =
|
|
IsScrollbarLayerForRoot()
|
|
? 1.0f
|
|
: mFrame->PresShell()->GetCumulativeResolution();
|
|
LayerIntRect layerBounds =
|
|
RoundedOut(bounds * LayoutDeviceToLayerScale(resolution));
|
|
aLayerData->SetVisibleRect(layerBounds);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void nsDisplayOwnLayer::WriteDebugInfo(std::stringstream& aStream) {
|
|
aStream << nsPrintfCString(" (flags 0x%x) (scrolltarget %" PRIu64 ")",
|
|
(int)mFlags, mScrollbarData.mTargetViewId)
|
|
.get();
|
|
}
|
|
|
|
nsDisplaySubDocument::nsDisplaySubDocument(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame,
|
|
nsSubDocumentFrame* aSubDocFrame,
|
|
nsDisplayList* aList,
|
|
nsDisplayOwnLayerFlags aFlags)
|
|
: nsDisplayOwnLayer(aBuilder, aFrame, aList,
|
|
aBuilder->CurrentActiveScrolledRoot(), aFlags),
|
|
mScrollParentId(aBuilder->GetCurrentScrollParentId()),
|
|
mShouldFlatten(false),
|
|
mSubDocFrame(aSubDocFrame) {
|
|
MOZ_COUNT_CTOR(nsDisplaySubDocument);
|
|
|
|
if (mSubDocFrame && mSubDocFrame != mFrame) {
|
|
mSubDocFrame->AddDisplayItem(this);
|
|
}
|
|
}
|
|
|
|
nsDisplaySubDocument::~nsDisplaySubDocument() {
|
|
MOZ_COUNT_DTOR(nsDisplaySubDocument);
|
|
if (mSubDocFrame) {
|
|
mSubDocFrame->RemoveDisplayItem(this);
|
|
}
|
|
}
|
|
|
|
nsIFrame* nsDisplaySubDocument::FrameForInvalidation() const {
|
|
return mSubDocFrame ? mSubDocFrame : mFrame;
|
|
}
|
|
|
|
void nsDisplaySubDocument::RemoveFrame(nsIFrame* aFrame) {
|
|
if (aFrame == mSubDocFrame) {
|
|
mSubDocFrame = nullptr;
|
|
SetDeletedFrame();
|
|
}
|
|
nsDisplayOwnLayer::RemoveFrame(aFrame);
|
|
}
|
|
|
|
static bool UseDisplayPortForViewport(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame) {
|
|
return aBuilder->IsPaintingToWindow() &&
|
|
DisplayPortUtils::ViewportHasDisplayPort(aFrame->PresContext());
|
|
}
|
|
|
|
nsRect nsDisplaySubDocument::GetBounds(nsDisplayListBuilder* aBuilder,
|
|
bool* aSnap) const {
|
|
bool usingDisplayPort = UseDisplayPortForViewport(aBuilder, mFrame);
|
|
|
|
if ((mFlags & nsDisplayOwnLayerFlags::GenerateScrollableLayer) &&
|
|
usingDisplayPort) {
|
|
*aSnap = false;
|
|
return mFrame->GetRect() + aBuilder->ToReferenceFrame(mFrame);
|
|
}
|
|
|
|
return nsDisplayOwnLayer::GetBounds(aBuilder, aSnap);
|
|
}
|
|
|
|
nsRegion nsDisplaySubDocument::GetOpaqueRegion(nsDisplayListBuilder* aBuilder,
|
|
bool* aSnap) const {
|
|
bool usingDisplayPort = UseDisplayPortForViewport(aBuilder, mFrame);
|
|
|
|
if ((mFlags & nsDisplayOwnLayerFlags::GenerateScrollableLayer) &&
|
|
usingDisplayPort) {
|
|
*aSnap = false;
|
|
return nsRegion();
|
|
}
|
|
|
|
return nsDisplayOwnLayer::GetOpaqueRegion(aBuilder, aSnap);
|
|
}
|
|
|
|
/* static */
|
|
nsDisplayFixedPosition* nsDisplayFixedPosition::CreateForFixedBackground(
|
|
nsDisplayListBuilder* aBuilder, nsIFrame* aFrame, nsIFrame* aSecondaryFrame,
|
|
nsDisplayBackgroundImage* aImage, const uint16_t aIndex,
|
|
const ActiveScrolledRoot* aScrollTargetASR) {
|
|
nsDisplayList temp(aBuilder);
|
|
temp.AppendToTop(aImage);
|
|
|
|
if (aSecondaryFrame) {
|
|
auto tableType = GetTableTypeFromFrame(aFrame);
|
|
const uint16_t index = CalculateTablePerFrameKey(aIndex + 1, tableType);
|
|
return MakeDisplayItemWithIndex<nsDisplayTableFixedPosition>(
|
|
aBuilder, aSecondaryFrame, index, &temp, aFrame, aScrollTargetASR);
|
|
}
|
|
|
|
return MakeDisplayItemWithIndex<nsDisplayFixedPosition>(
|
|
aBuilder, aFrame, aIndex + 1, &temp, aScrollTargetASR);
|
|
}
|
|
|
|
nsDisplayFixedPosition::nsDisplayFixedPosition(
|
|
nsDisplayListBuilder* aBuilder, nsIFrame* aFrame, nsDisplayList* aList,
|
|
const ActiveScrolledRoot* aActiveScrolledRoot,
|
|
const ActiveScrolledRoot* aScrollTargetASR)
|
|
: nsDisplayOwnLayer(aBuilder, aFrame, aList, aActiveScrolledRoot),
|
|
mScrollTargetASR(aScrollTargetASR),
|
|
mIsFixedBackground(false) {
|
|
MOZ_COUNT_CTOR(nsDisplayFixedPosition);
|
|
}
|
|
|
|
nsDisplayFixedPosition::nsDisplayFixedPosition(
|
|
nsDisplayListBuilder* aBuilder, nsIFrame* aFrame, nsDisplayList* aList,
|
|
const ActiveScrolledRoot* aScrollTargetASR)
|
|
: nsDisplayOwnLayer(aBuilder, aFrame, aList,
|
|
aBuilder->CurrentActiveScrolledRoot()),
|
|
// For fixed backgrounds, this is the ASR for the nearest scroll frame.
|
|
mScrollTargetASR(aScrollTargetASR),
|
|
mIsFixedBackground(true) {
|
|
MOZ_COUNT_CTOR(nsDisplayFixedPosition);
|
|
}
|
|
|
|
ScrollableLayerGuid::ViewID nsDisplayFixedPosition::GetScrollTargetId() const {
|
|
if (mScrollTargetASR &&
|
|
(mIsFixedBackground || !nsLayoutUtils::IsReallyFixedPos(mFrame))) {
|
|
return mScrollTargetASR->GetViewId();
|
|
}
|
|
return nsLayoutUtils::ScrollIdForRootScrollFrame(mFrame->PresContext());
|
|
}
|
|
|
|
bool nsDisplayFixedPosition::CreateWebRenderCommands(
|
|
wr::DisplayListBuilder& aBuilder, wr::IpcResourceUpdateQueue& aResources,
|
|
const StackingContextHelper& aSc, RenderRootStateManager* aManager,
|
|
nsDisplayListBuilder* aDisplayListBuilder) {
|
|
SideBits sides = SideBits::eNone;
|
|
if (!mIsFixedBackground) {
|
|
sides = nsLayoutUtils::GetSideBitsForFixedPositionContent(mFrame);
|
|
}
|
|
|
|
// We install this RAII scrolltarget tracker so that any
|
|
// nsDisplayCompositorHitTestInfo items inside this fixed-pos item (and that
|
|
// share the same ASR as this item) use the correct scroll target. That way
|
|
// attempts to scroll on those items will scroll the root scroll frame.
|
|
wr::DisplayListBuilder::FixedPosScrollTargetTracker tracker(
|
|
aBuilder, GetActiveScrolledRoot(), GetScrollTargetId(), sides);
|
|
return nsDisplayOwnLayer::CreateWebRenderCommands(
|
|
aBuilder, aResources, aSc, aManager, aDisplayListBuilder);
|
|
}
|
|
|
|
bool nsDisplayFixedPosition::UpdateScrollData(
|
|
WebRenderScrollData* aData, WebRenderLayerScrollData* aLayerData) {
|
|
if (aLayerData) {
|
|
if (!mIsFixedBackground) {
|
|
aLayerData->SetFixedPositionSides(
|
|
nsLayoutUtils::GetSideBitsForFixedPositionContent(mFrame));
|
|
}
|
|
aLayerData->SetFixedPositionScrollContainerId(GetScrollTargetId());
|
|
}
|
|
nsDisplayOwnLayer::UpdateScrollData(aData, aLayerData);
|
|
return true;
|
|
}
|
|
|
|
bool nsDisplayFixedPosition::ShouldGetFixedAnimationId() {
|
|
#if defined(MOZ_WIDGET_ANDROID)
|
|
return mFrame->PresContext()->IsRootContentDocumentCrossProcess() &&
|
|
nsLayoutUtils::ScrollIdForRootScrollFrame(mFrame->PresContext()) ==
|
|
GetScrollTargetId();
|
|
#else
|
|
return false;
|
|
#endif
|
|
}
|
|
|
|
void nsDisplayFixedPosition::WriteDebugInfo(std::stringstream& aStream) {
|
|
aStream << nsPrintfCString(
|
|
" (containerASR %s) (scrolltarget %" PRIu64 ")",
|
|
ActiveScrolledRoot::ToString(mScrollTargetASR).get(),
|
|
GetScrollTargetId())
|
|
.get();
|
|
}
|
|
|
|
TableType GetTableTypeFromFrame(nsIFrame* aFrame) {
|
|
if (aFrame->IsTableFrame()) {
|
|
return TableType::Table;
|
|
}
|
|
|
|
if (aFrame->IsTableColFrame()) {
|
|
return TableType::TableCol;
|
|
}
|
|
|
|
if (aFrame->IsTableColGroupFrame()) {
|
|
return TableType::TableColGroup;
|
|
}
|
|
|
|
if (aFrame->IsTableRowFrame()) {
|
|
return TableType::TableRow;
|
|
}
|
|
|
|
if (aFrame->IsTableRowGroupFrame()) {
|
|
return TableType::TableRowGroup;
|
|
}
|
|
|
|
if (aFrame->IsTableCellFrame()) {
|
|
return TableType::TableCell;
|
|
}
|
|
|
|
MOZ_ASSERT_UNREACHABLE("Invalid frame.");
|
|
return TableType::Table;
|
|
}
|
|
|
|
nsDisplayTableFixedPosition::nsDisplayTableFixedPosition(
|
|
nsDisplayListBuilder* aBuilder, nsIFrame* aFrame, nsDisplayList* aList,
|
|
nsIFrame* aAncestorFrame, const ActiveScrolledRoot* aScrollTargetASR)
|
|
: nsDisplayFixedPosition(aBuilder, aFrame, aList, aScrollTargetASR),
|
|
mAncestorFrame(aAncestorFrame) {
|
|
if (aBuilder->IsRetainingDisplayList()) {
|
|
mAncestorFrame->AddDisplayItem(this);
|
|
}
|
|
}
|
|
|
|
nsDisplayStickyPosition::nsDisplayStickyPosition(
|
|
nsDisplayListBuilder* aBuilder, nsIFrame* aFrame, nsDisplayList* aList,
|
|
const ActiveScrolledRoot* aActiveScrolledRoot,
|
|
const ActiveScrolledRoot* aContainerASR, bool aClippedToDisplayPort)
|
|
: nsDisplayOwnLayer(aBuilder, aFrame, aList, aActiveScrolledRoot),
|
|
mContainerASR(aContainerASR),
|
|
mClippedToDisplayPort(aClippedToDisplayPort),
|
|
mShouldFlatten(false),
|
|
mWrStickyAnimationId(0) {
|
|
MOZ_COUNT_CTOR(nsDisplayStickyPosition);
|
|
}
|
|
|
|
// Returns the smallest distance from "0" to the range [min, max] where
|
|
// min <= max. Despite the name, the return value is actually a 1-D vector,
|
|
// and so may be negative if max < 0.
|
|
static nscoord DistanceToRange(nscoord min, nscoord max) {
|
|
MOZ_ASSERT(min <= max);
|
|
if (max < 0) {
|
|
return max;
|
|
}
|
|
if (min > 0) {
|
|
return min;
|
|
}
|
|
MOZ_ASSERT(min <= 0 && max >= 0);
|
|
return 0;
|
|
}
|
|
|
|
// Returns the magnitude of the part of the range [min, max] that is greater
|
|
// than zero. The return value is always non-negative.
|
|
static nscoord PositivePart(nscoord min, nscoord max) {
|
|
MOZ_ASSERT(min <= max);
|
|
if (min >= 0) {
|
|
return max - min;
|
|
}
|
|
if (max > 0) {
|
|
return max;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
// Returns the magnitude of the part of the range [min, max] that is less
|
|
// than zero. The return value is always non-negative.
|
|
static nscoord NegativePart(nscoord min, nscoord max) {
|
|
MOZ_ASSERT(min <= max);
|
|
if (max <= 0) {
|
|
return max - min;
|
|
}
|
|
if (min < 0) {
|
|
return 0 - min;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
StickyScrollContainer* nsDisplayStickyPosition::GetStickyScrollContainer() {
|
|
StickyScrollContainer* stickyScrollContainer =
|
|
StickyScrollContainer::GetStickyScrollContainerForFrame(mFrame);
|
|
if (stickyScrollContainer) {
|
|
// If there's no ASR for the scrollframe that this sticky item is attached
|
|
// to, then don't create a WR sticky item for it either. Trying to do so
|
|
// will end in sadness because WR will interpret some coordinates as
|
|
// relative to the nearest enclosing scrollframe, which will correspond
|
|
// to the nearest ancestor ASR on the gecko side. That ASR will not be the
|
|
// same as the scrollframe this sticky item is actually supposed to be
|
|
// attached to, thus the sadness.
|
|
// Not sending WR the sticky item is ok, because the enclosing scrollframe
|
|
// will never be asynchronously scrolled. Instead we will always position
|
|
// the sticky items correctly on the gecko side and WR will never need to
|
|
// adjust their position itself.
|
|
MOZ_ASSERT(stickyScrollContainer->ScrollContainer()
|
|
->IsMaybeAsynchronouslyScrolled());
|
|
if (!stickyScrollContainer->ScrollContainer()
|
|
->IsMaybeAsynchronouslyScrolled()) {
|
|
stickyScrollContainer = nullptr;
|
|
}
|
|
}
|
|
return stickyScrollContainer;
|
|
}
|
|
|
|
bool nsDisplayStickyPosition::CreateWebRenderCommands(
|
|
wr::DisplayListBuilder& aBuilder, wr::IpcResourceUpdateQueue& aResources,
|
|
const StackingContextHelper& aSc, RenderRootStateManager* aManager,
|
|
nsDisplayListBuilder* aDisplayListBuilder) {
|
|
StickyScrollContainer* stickyScrollContainer = GetStickyScrollContainer();
|
|
|
|
Maybe<wr::SpaceAndClipChainHelper> saccHelper;
|
|
|
|
if (stickyScrollContainer) {
|
|
float auPerDevPixel = mFrame->PresContext()->AppUnitsPerDevPixel();
|
|
|
|
bool snap;
|
|
nsRect itemBounds = GetBounds(aDisplayListBuilder, &snap);
|
|
|
|
Maybe<float> topMargin;
|
|
Maybe<float> rightMargin;
|
|
Maybe<float> bottomMargin;
|
|
Maybe<float> leftMargin;
|
|
wr::StickyOffsetBounds vBounds = {0.0, 0.0};
|
|
wr::StickyOffsetBounds hBounds = {0.0, 0.0};
|
|
nsPoint appliedOffset;
|
|
|
|
nsRectAbsolute outer;
|
|
nsRectAbsolute inner;
|
|
stickyScrollContainer->GetScrollRanges(mFrame, &outer, &inner);
|
|
|
|
nsPoint offset =
|
|
stickyScrollContainer->ScrollContainer()->GetOffsetToCrossDoc(Frame()) +
|
|
ToReferenceFrame();
|
|
|
|
// Adjust the scrollPort coordinates to be relative to the reference frame,
|
|
// so that it is in the same space as everything else.
|
|
nsRect scrollPort =
|
|
stickyScrollContainer->ScrollContainer()->GetScrollPortRect();
|
|
scrollPort += offset;
|
|
|
|
// The following computations make more sense upon understanding the
|
|
// semantics of "inner" and "outer", which is explained in the comment on
|
|
// SetStickyPositionData in Layers.h.
|
|
|
|
if (outer.YMost() != inner.YMost()) {
|
|
// Question: How far will itemBounds.y be from the top of the scrollport
|
|
// when we have scrolled from the current scroll position of "0" to
|
|
// reach the range [inner.YMost(), outer.YMost()] where the item gets
|
|
// stuck?
|
|
// Answer: the current distance is "itemBounds.y - scrollPort.y". That
|
|
// needs to be adjusted by the distance to the range, less any other
|
|
// sticky ranges that fall between 0 and the range. If the distance is
|
|
// negative (i.e. inner.YMost() <= outer.YMost() < 0) then we would be
|
|
// scrolling upwards (decreasing scroll offset) to reach that range,
|
|
// which would increase itemBounds.y and make it farther away from the
|
|
// top of the scrollport. So in that case the adjustment is -distance.
|
|
// If the distance is positive (0 < inner.YMost() <= outer.YMost()) then
|
|
// we would be scrolling downwards, itemBounds.y would decrease, and we
|
|
// again need to adjust by -distance. If we are already in the range
|
|
// then no adjustment is needed and distance is 0 so again using
|
|
// -distance works. If the distance is positive, and the item has both
|
|
// top and bottom sticky ranges, then the bottom sticky range may fall
|
|
// (entirely[1] or partly[2]) between the current scroll position.
|
|
// [1]: 0 <= outer.Y() <= inner.Y() < inner.YMost() <= outer.YMost()
|
|
// [2]: outer.Y() < 0 <= inner.Y() < inner.YMost() <= outer.YMost()
|
|
// In these cases, the item doesn't actually move for that part of the
|
|
// distance, so we need to subtract out that bit, which can be computed
|
|
// as the positive portion of the range [outer.Y(), inner.Y()].
|
|
nscoord distance = DistanceToRange(inner.YMost(), outer.YMost());
|
|
if (distance > 0) {
|
|
distance -= PositivePart(outer.Y(), inner.Y());
|
|
}
|
|
topMargin = Some(NSAppUnitsToFloatPixels(
|
|
itemBounds.y - scrollPort.y - distance, auPerDevPixel));
|
|
// Question: What is the maximum positive ("downward") offset that WR
|
|
// will have to apply to this item in order to prevent the item from
|
|
// visually moving?
|
|
// Answer: Since the item is "sticky" in the range [inner.YMost(),
|
|
// outer.YMost()], the maximum offset will be the size of the range, which
|
|
// is outer.YMost() - inner.YMost().
|
|
vBounds.max =
|
|
NSAppUnitsToFloatPixels(outer.YMost() - inner.YMost(), auPerDevPixel);
|
|
// Question: how much of an offset has layout already applied to the item?
|
|
// Answer: if we are
|
|
// (a) inside the sticky range (inner.YMost() < 0 <= outer.YMost()), or
|
|
// (b) past the sticky range (inner.YMost() < outer.YMost() < 0)
|
|
// then layout has already applied some offset to the position of the
|
|
// item. The amount of the adjustment is |0 - inner.YMost()| in case (a)
|
|
// and |outer.YMost() - inner.YMost()| in case (b).
|
|
if (inner.YMost() < 0) {
|
|
appliedOffset.y = std::min(0, outer.YMost()) - inner.YMost();
|
|
MOZ_ASSERT(appliedOffset.y > 0);
|
|
}
|
|
}
|
|
if (outer.Y() != inner.Y()) {
|
|
// Similar logic as in the previous section, but this time we care about
|
|
// the distance from itemBounds.YMost() to scrollPort.YMost().
|
|
nscoord distance = DistanceToRange(outer.Y(), inner.Y());
|
|
if (distance < 0) {
|
|
distance += NegativePart(inner.YMost(), outer.YMost());
|
|
}
|
|
bottomMargin = Some(NSAppUnitsToFloatPixels(
|
|
scrollPort.YMost() - itemBounds.YMost() + distance, auPerDevPixel));
|
|
// And here WR will be moving the item upwards rather than downwards so
|
|
// again things are inverted from the previous block.
|
|
vBounds.min =
|
|
NSAppUnitsToFloatPixels(outer.Y() - inner.Y(), auPerDevPixel);
|
|
// We can't have appliedOffset be both positive and negative, and the top
|
|
// adjustment takes priority. So here we only update appliedOffset.y if
|
|
// it wasn't set by the top-sticky case above.
|
|
if (appliedOffset.y == 0 && inner.Y() > 0) {
|
|
appliedOffset.y = std::max(0, outer.Y()) - inner.Y();
|
|
MOZ_ASSERT(appliedOffset.y < 0);
|
|
}
|
|
}
|
|
// Same as above, but for the x-axis
|
|
if (outer.XMost() != inner.XMost()) {
|
|
nscoord distance = DistanceToRange(inner.XMost(), outer.XMost());
|
|
if (distance > 0) {
|
|
distance -= PositivePart(outer.X(), inner.X());
|
|
}
|
|
leftMargin = Some(NSAppUnitsToFloatPixels(
|
|
itemBounds.x - scrollPort.x - distance, auPerDevPixel));
|
|
hBounds.max =
|
|
NSAppUnitsToFloatPixels(outer.XMost() - inner.XMost(), auPerDevPixel);
|
|
if (inner.XMost() < 0) {
|
|
appliedOffset.x = std::min(0, outer.XMost()) - inner.XMost();
|
|
MOZ_ASSERT(appliedOffset.x > 0);
|
|
}
|
|
}
|
|
if (outer.X() != inner.X()) {
|
|
nscoord distance = DistanceToRange(outer.X(), inner.X());
|
|
if (distance < 0) {
|
|
distance += NegativePart(inner.XMost(), outer.XMost());
|
|
}
|
|
rightMargin = Some(NSAppUnitsToFloatPixels(
|
|
scrollPort.XMost() - itemBounds.XMost() + distance, auPerDevPixel));
|
|
hBounds.min =
|
|
NSAppUnitsToFloatPixels(outer.X() - inner.X(), auPerDevPixel);
|
|
if (appliedOffset.x == 0 && inner.X() > 0) {
|
|
appliedOffset.x = std::max(0, outer.X()) - inner.X();
|
|
MOZ_ASSERT(appliedOffset.x < 0);
|
|
}
|
|
}
|
|
|
|
LayoutDeviceRect bounds =
|
|
LayoutDeviceRect::FromAppUnits(itemBounds, auPerDevPixel);
|
|
wr::LayoutVector2D applied = {
|
|
NSAppUnitsToFloatPixels(appliedOffset.x, auPerDevPixel),
|
|
NSAppUnitsToFloatPixels(appliedOffset.y, auPerDevPixel)};
|
|
bool needsProp = ShouldGetStickyAnimationId();
|
|
Maybe<wr::WrAnimationProperty> prop;
|
|
auto spatialKey = wr::SpatialKey(uint64_t(mFrame), GetPerFrameKey(),
|
|
wr::SpatialKeyKind::Sticky);
|
|
if (needsProp) {
|
|
RefPtr<WebRenderAPZAnimationData> animationData =
|
|
aManager->CommandBuilder()
|
|
.CreateOrRecycleWebRenderUserData<WebRenderAPZAnimationData>(
|
|
this);
|
|
mWrStickyAnimationId = animationData->GetAnimationId();
|
|
|
|
prop.emplace();
|
|
prop->id = mWrStickyAnimationId;
|
|
prop->key = spatialKey;
|
|
prop->effect_type = wr::WrAnimationType::Transform;
|
|
}
|
|
wr::WrSpatialId spatialId = aBuilder.DefineStickyFrame(
|
|
wr::ToLayoutRect(bounds), topMargin.ptrOr(nullptr),
|
|
rightMargin.ptrOr(nullptr), bottomMargin.ptrOr(nullptr),
|
|
leftMargin.ptrOr(nullptr), vBounds, hBounds, applied, spatialKey,
|
|
prop.ptrOr(nullptr));
|
|
|
|
saccHelper.emplace(aBuilder, spatialId);
|
|
aManager->CommandBuilder().PushOverrideForASR(mContainerASR, spatialId);
|
|
}
|
|
|
|
{
|
|
wr::StackingContextParams params;
|
|
params.clip =
|
|
wr::WrStackingContextClip::ClipChain(aBuilder.CurrentClipChainId());
|
|
StackingContextHelper sc(aSc, GetActiveScrolledRoot(), mFrame, this,
|
|
aBuilder, params);
|
|
nsDisplayOwnLayer::CreateWebRenderCommands(aBuilder, aResources, sc,
|
|
aManager, aDisplayListBuilder);
|
|
}
|
|
|
|
if (stickyScrollContainer) {
|
|
aManager->CommandBuilder().PopOverrideForASR(mContainerASR);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
void nsDisplayStickyPosition::CalculateLayerScrollRanges(
|
|
StickyScrollContainer* aStickyScrollContainer, float aAppUnitsPerDevPixel,
|
|
float aScaleX, float aScaleY, LayerRectAbsolute& aStickyOuter,
|
|
LayerRectAbsolute& aStickyInner) {
|
|
nsRectAbsolute outer;
|
|
nsRectAbsolute inner;
|
|
aStickyScrollContainer->GetScrollRanges(mFrame, &outer, &inner);
|
|
aStickyOuter.SetBox(
|
|
NSAppUnitsToFloatPixels(outer.X(), aAppUnitsPerDevPixel) * aScaleX,
|
|
NSAppUnitsToFloatPixels(outer.Y(), aAppUnitsPerDevPixel) * aScaleY,
|
|
NSAppUnitsToFloatPixels(outer.XMost(), aAppUnitsPerDevPixel) * aScaleX,
|
|
NSAppUnitsToFloatPixels(outer.YMost(), aAppUnitsPerDevPixel) * aScaleY);
|
|
aStickyInner.SetBox(
|
|
NSAppUnitsToFloatPixels(inner.X(), aAppUnitsPerDevPixel) * aScaleX,
|
|
NSAppUnitsToFloatPixels(inner.Y(), aAppUnitsPerDevPixel) * aScaleY,
|
|
NSAppUnitsToFloatPixels(inner.XMost(), aAppUnitsPerDevPixel) * aScaleX,
|
|
NSAppUnitsToFloatPixels(inner.YMost(), aAppUnitsPerDevPixel) * aScaleY);
|
|
}
|
|
|
|
bool nsDisplayStickyPosition::UpdateScrollData(
|
|
WebRenderScrollData* aData, WebRenderLayerScrollData* aLayerData) {
|
|
bool hasDynamicToolbar = HasDynamicToolbar();
|
|
if (aLayerData && hasDynamicToolbar) {
|
|
StickyScrollContainer* stickyScrollContainer = GetStickyScrollContainer();
|
|
if (stickyScrollContainer) {
|
|
float auPerDevPixel = mFrame->PresContext()->AppUnitsPerDevPixel();
|
|
float cumulativeResolution =
|
|
mFrame->PresShell()->GetCumulativeResolution();
|
|
LayerRectAbsolute stickyOuter;
|
|
LayerRectAbsolute stickyInner;
|
|
CalculateLayerScrollRanges(stickyScrollContainer, auPerDevPixel,
|
|
cumulativeResolution, cumulativeResolution,
|
|
stickyOuter, stickyInner);
|
|
aLayerData->SetStickyScrollRangeOuter(stickyOuter);
|
|
aLayerData->SetStickyScrollRangeInner(stickyInner);
|
|
|
|
SideBits sides =
|
|
nsLayoutUtils::GetSideBitsForFixedPositionContent(mFrame);
|
|
aLayerData->SetFixedPositionSides(sides);
|
|
|
|
ScrollableLayerGuid::ViewID scrollId = nsLayoutUtils::FindOrCreateIDFor(
|
|
stickyScrollContainer->ScrollContainer()
|
|
->GetScrolledFrame()
|
|
->GetContent());
|
|
aLayerData->SetStickyPositionScrollContainerId(scrollId);
|
|
}
|
|
|
|
if (ShouldGetStickyAnimationId()) {
|
|
aLayerData->SetStickyPositionAnimationId(mWrStickyAnimationId);
|
|
}
|
|
}
|
|
// Return true if either there is a dynamic toolbar affecting this sticky
|
|
// item or the OwnLayer base implementation returns true for some other
|
|
// reason.
|
|
bool ret = hasDynamicToolbar;
|
|
ret |= nsDisplayOwnLayer::UpdateScrollData(aData, aLayerData);
|
|
return ret;
|
|
}
|
|
|
|
bool nsDisplayStickyPosition::ShouldGetStickyAnimationId() const {
|
|
return HasDynamicToolbar(); // also implies being in the cross-process RCD
|
|
}
|
|
|
|
nsDisplayScrollInfoLayer::nsDisplayScrollInfoLayer(
|
|
nsDisplayListBuilder* aBuilder, nsIFrame* aScrolledFrame,
|
|
nsIFrame* aScrollFrame, const CompositorHitTestInfo& aHitInfo,
|
|
const nsRect& aHitArea)
|
|
: nsDisplayWrapList(aBuilder, aScrollFrame),
|
|
mScrollFrame(aScrollFrame),
|
|
mScrolledFrame(aScrolledFrame),
|
|
mScrollParentId(aBuilder->GetCurrentScrollParentId()),
|
|
mHitInfo(aHitInfo),
|
|
mHitArea(aHitArea) {
|
|
#ifdef NS_BUILD_REFCNT_LOGGING
|
|
MOZ_COUNT_CTOR(nsDisplayScrollInfoLayer);
|
|
#endif
|
|
}
|
|
|
|
UniquePtr<ScrollMetadata> nsDisplayScrollInfoLayer::ComputeScrollMetadata(
|
|
nsDisplayListBuilder* aBuilder, WebRenderLayerManager* aLayerManager) {
|
|
ScrollMetadata metadata = nsLayoutUtils::ComputeScrollMetadata(
|
|
mScrolledFrame, mScrollFrame, mScrollFrame->GetContent(), Frame(),
|
|
ToReferenceFrame(), aLayerManager, mScrollParentId,
|
|
mScrollFrame->GetSize(), false);
|
|
metadata.GetMetrics().SetIsScrollInfoLayer(true);
|
|
ScrollContainerFrame* scrollContainerFrame =
|
|
mScrollFrame->GetScrollTargetFrame();
|
|
if (scrollContainerFrame) {
|
|
aBuilder->AddScrollContainerFrameToNotify(scrollContainerFrame);
|
|
}
|
|
|
|
return UniquePtr<ScrollMetadata>(new ScrollMetadata(metadata));
|
|
}
|
|
|
|
bool nsDisplayScrollInfoLayer::UpdateScrollData(
|
|
WebRenderScrollData* aData, WebRenderLayerScrollData* aLayerData) {
|
|
if (aLayerData) {
|
|
UniquePtr<ScrollMetadata> metadata =
|
|
ComputeScrollMetadata(aData->GetBuilder(), aData->GetManager());
|
|
MOZ_ASSERT(aData);
|
|
MOZ_ASSERT(metadata);
|
|
aLayerData->AppendScrollMetadata(*aData, *metadata);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool nsDisplayScrollInfoLayer::CreateWebRenderCommands(
|
|
wr::DisplayListBuilder& aBuilder, wr::IpcResourceUpdateQueue& aResources,
|
|
const StackingContextHelper& aSc, RenderRootStateManager* aManager,
|
|
nsDisplayListBuilder* aDisplayListBuilder) {
|
|
ScrollableLayerGuid::ViewID scrollId =
|
|
nsLayoutUtils::FindOrCreateIDFor(mScrollFrame->GetContent());
|
|
|
|
const LayoutDeviceRect devRect = LayoutDeviceRect::FromAppUnits(
|
|
mHitArea, mScrollFrame->PresContext()->AppUnitsPerDevPixel());
|
|
|
|
const wr::LayoutRect rect = wr::ToLayoutRect(devRect);
|
|
|
|
aBuilder.PushHitTest(rect, rect, !BackfaceIsHidden(), scrollId, mHitInfo,
|
|
SideBits::eNone);
|
|
|
|
return true;
|
|
}
|
|
|
|
void nsDisplayScrollInfoLayer::WriteDebugInfo(std::stringstream& aStream) {
|
|
aStream << " (scrollframe " << mScrollFrame << " scrolledFrame "
|
|
<< mScrolledFrame << ")";
|
|
}
|
|
|
|
nsDisplayZoom::nsDisplayZoom(nsDisplayListBuilder* aBuilder, nsIFrame* aFrame,
|
|
nsSubDocumentFrame* aSubDocFrame,
|
|
nsDisplayList* aList, int32_t aAPD,
|
|
int32_t aParentAPD, nsDisplayOwnLayerFlags aFlags)
|
|
: nsDisplaySubDocument(aBuilder, aFrame, aSubDocFrame, aList, aFlags),
|
|
mAPD(aAPD),
|
|
mParentAPD(aParentAPD) {
|
|
MOZ_COUNT_CTOR(nsDisplayZoom);
|
|
}
|
|
|
|
nsRect nsDisplayZoom::GetBounds(nsDisplayListBuilder* aBuilder,
|
|
bool* aSnap) const {
|
|
nsRect bounds = nsDisplaySubDocument::GetBounds(aBuilder, aSnap);
|
|
*aSnap = false;
|
|
return bounds.ScaleToOtherAppUnitsRoundOut(mAPD, mParentAPD);
|
|
}
|
|
|
|
void nsDisplayZoom::HitTest(nsDisplayListBuilder* aBuilder, const nsRect& aRect,
|
|
HitTestState* aState,
|
|
nsTArray<nsIFrame*>* aOutFrames) {
|
|
nsRect rect;
|
|
// A 1x1 rect indicates we are just hit testing a point, so pass down a 1x1
|
|
// rect as well instead of possibly rounding the width or height to zero.
|
|
if (aRect.width == 1 && aRect.height == 1) {
|
|
rect.MoveTo(aRect.TopLeft().ScaleToOtherAppUnits(mParentAPD, mAPD));
|
|
rect.width = rect.height = 1;
|
|
} else {
|
|
rect = aRect.ScaleToOtherAppUnitsRoundOut(mParentAPD, mAPD);
|
|
}
|
|
mList.HitTest(aBuilder, rect, aState, aOutFrames);
|
|
}
|
|
|
|
nsDisplayAsyncZoom::nsDisplayAsyncZoom(
|
|
nsDisplayListBuilder* aBuilder, nsIFrame* aFrame, nsDisplayList* aList,
|
|
const ActiveScrolledRoot* aActiveScrolledRoot, FrameMetrics::ViewID aViewID)
|
|
: nsDisplayOwnLayer(aBuilder, aFrame, aList, aActiveScrolledRoot),
|
|
mViewID(aViewID) {
|
|
MOZ_COUNT_CTOR(nsDisplayAsyncZoom);
|
|
}
|
|
|
|
#ifdef NS_BUILD_REFCNT_LOGGING
|
|
nsDisplayAsyncZoom::~nsDisplayAsyncZoom() {
|
|
MOZ_COUNT_DTOR(nsDisplayAsyncZoom);
|
|
}
|
|
#endif
|
|
|
|
void nsDisplayAsyncZoom::HitTest(nsDisplayListBuilder* aBuilder,
|
|
const nsRect& aRect, HitTestState* aState,
|
|
nsTArray<nsIFrame*>* aOutFrames) {
|
|
#ifdef DEBUG
|
|
ScrollContainerFrame* scrollContainerFrame = do_QueryFrame(mFrame);
|
|
MOZ_ASSERT(scrollContainerFrame &&
|
|
ViewportUtils::IsZoomedContentRoot(
|
|
scrollContainerFrame->GetScrolledFrame()));
|
|
#endif
|
|
nsRect rect = ViewportUtils::VisualToLayout(aRect, mFrame->PresShell());
|
|
mList.HitTest(aBuilder, rect, aState, aOutFrames);
|
|
}
|
|
|
|
bool nsDisplayAsyncZoom::UpdateScrollData(
|
|
WebRenderScrollData* aData, WebRenderLayerScrollData* aLayerData) {
|
|
bool ret = nsDisplayOwnLayer::UpdateScrollData(aData, aLayerData);
|
|
MOZ_ASSERT(ret);
|
|
if (aLayerData) {
|
|
aLayerData->SetAsyncZoomContainerId(mViewID);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
///////////////////////////////////////////////////
|
|
// nsDisplayTransform Implementation
|
|
//
|
|
|
|
#ifndef DEBUG
|
|
static_assert(sizeof(nsDisplayTransform) <= 512,
|
|
"nsDisplayTransform has grown");
|
|
#endif
|
|
|
|
nsDisplayTransform::nsDisplayTransform(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame, nsDisplayList* aList,
|
|
const nsRect& aChildrenBuildingRect)
|
|
: nsPaintedDisplayItem(aBuilder, aFrame),
|
|
mChildren(aBuilder),
|
|
mTransform(Some(Matrix4x4())),
|
|
mChildrenBuildingRect(aChildrenBuildingRect),
|
|
mPrerenderDecision(PrerenderDecision::No),
|
|
mIsTransformSeparator(true),
|
|
mHasTransformGetter(false),
|
|
mHasAssociatedPerspective(false),
|
|
mContainsASRs(false),
|
|
mWrapsBackdropFilter(false) {
|
|
MOZ_COUNT_CTOR(nsDisplayTransform);
|
|
MOZ_ASSERT(aFrame, "Must have a frame!");
|
|
Init(aBuilder, aList);
|
|
}
|
|
|
|
nsDisplayTransform::nsDisplayTransform(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame, nsDisplayList* aList,
|
|
const nsRect& aChildrenBuildingRect,
|
|
PrerenderDecision aPrerenderDecision,
|
|
bool aWrapsBackdropFilter)
|
|
: nsPaintedDisplayItem(aBuilder, aFrame),
|
|
mChildren(aBuilder),
|
|
mChildrenBuildingRect(aChildrenBuildingRect),
|
|
mPrerenderDecision(aPrerenderDecision),
|
|
mIsTransformSeparator(false),
|
|
mHasTransformGetter(false),
|
|
mHasAssociatedPerspective(false),
|
|
mContainsASRs(false),
|
|
mWrapsBackdropFilter(aWrapsBackdropFilter) {
|
|
MOZ_COUNT_CTOR(nsDisplayTransform);
|
|
MOZ_ASSERT(aFrame, "Must have a frame!");
|
|
SetReferenceFrameToAncestor(aBuilder);
|
|
Init(aBuilder, aList);
|
|
}
|
|
|
|
nsDisplayTransform::nsDisplayTransform(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame, nsDisplayList* aList,
|
|
const nsRect& aChildrenBuildingRect,
|
|
decltype(WithTransformGetter))
|
|
: nsPaintedDisplayItem(aBuilder, aFrame),
|
|
mChildren(aBuilder),
|
|
mChildrenBuildingRect(aChildrenBuildingRect),
|
|
mPrerenderDecision(PrerenderDecision::No),
|
|
mIsTransformSeparator(false),
|
|
mHasTransformGetter(true),
|
|
mHasAssociatedPerspective(false),
|
|
mContainsASRs(false),
|
|
mWrapsBackdropFilter(false) {
|
|
MOZ_COUNT_CTOR(nsDisplayTransform);
|
|
MOZ_ASSERT(aFrame, "Must have a frame!");
|
|
MOZ_ASSERT(aFrame->GetTransformGetter());
|
|
Init(aBuilder, aList);
|
|
}
|
|
|
|
void nsDisplayTransform::SetReferenceFrameToAncestor(
|
|
nsDisplayListBuilder* aBuilder) {
|
|
if (mFrame == aBuilder->RootReferenceFrame()) {
|
|
return;
|
|
}
|
|
// We manually recompute mToReferenceFrame without going through the
|
|
// builder, since this won't apply the 'additional offset'. Our
|
|
// children will already be painting with that applied, and we don't
|
|
// want to include it a second time in our transform. We don't recompute
|
|
// our visible/building rects, since those should still include the additional
|
|
// offset.
|
|
// TODO: Are there are things computed using our ToReferenceFrame that should
|
|
// have the additional offset applied? Should we instead just manually remove
|
|
// the offset from our transform instead of this more general value?
|
|
// Can we instead apply the additional offset to us and not our children, like
|
|
// we do for all other offsets (and how reference frames are supposed to
|
|
// work)?
|
|
nsIFrame* outerFrame = nsLayoutUtils::GetCrossDocParentFrameInProcess(mFrame);
|
|
const nsIFrame* referenceFrame = aBuilder->FindReferenceFrameFor(outerFrame);
|
|
mToReferenceFrame = mFrame->GetOffsetToCrossDoc(referenceFrame);
|
|
}
|
|
|
|
void nsDisplayTransform::Init(nsDisplayListBuilder* aBuilder,
|
|
nsDisplayList* aChildren) {
|
|
mChildren.AppendToTop(aChildren);
|
|
UpdateBounds(aBuilder);
|
|
}
|
|
|
|
bool nsDisplayTransform::ShouldFlattenAway(nsDisplayListBuilder* aBuilder) {
|
|
return false;
|
|
}
|
|
|
|
/* Returns the delta specified by the transform-origin property.
|
|
* This is a positive delta, meaning that it indicates the direction to move
|
|
* to get from (0, 0) of the frame to the transform origin. This function is
|
|
* called off the main thread.
|
|
*/
|
|
/* static */
|
|
Point3D nsDisplayTransform::GetDeltaToTransformOrigin(
|
|
const nsIFrame* aFrame, TransformReferenceBox& aRefBox,
|
|
float aAppUnitsPerPixel) {
|
|
MOZ_ASSERT(aFrame, "Can't get delta for a null frame!");
|
|
MOZ_ASSERT(aFrame->IsTransformed() || aFrame->BackfaceIsHidden() ||
|
|
aFrame->Combines3DTransformWithAncestors(),
|
|
"Shouldn't get a delta for an untransformed frame!");
|
|
|
|
if (!aFrame->IsTransformed()) {
|
|
return Point3D();
|
|
}
|
|
|
|
/* For both of the coordinates, if the value of transform is a
|
|
* percentage, it's relative to the size of the frame. Otherwise, if it's
|
|
* a distance, it's already computed for us!
|
|
*/
|
|
const nsStyleDisplay* display = aFrame->StyleDisplay();
|
|
|
|
const StyleTransformOrigin& transformOrigin = display->mTransformOrigin;
|
|
CSSPoint origin = nsStyleTransformMatrix::Convert2DPosition(
|
|
transformOrigin.horizontal, transformOrigin.vertical, aRefBox);
|
|
|
|
// Note:
|
|
// 1. SVG frames have a reference box that can be (and typically is) offset
|
|
// from the TopLeft() of the frame. We need to account for that here.
|
|
// 2. If we are using transform-box:content-box in CSS layout, we have the
|
|
// offset from TopLeft() of the frame as well.
|
|
origin.x += CSSPixel::FromAppUnits(aRefBox.X());
|
|
origin.y += CSSPixel::FromAppUnits(aRefBox.Y());
|
|
|
|
float scale = AppUnitsPerCSSPixel() / float(aAppUnitsPerPixel);
|
|
float z = transformOrigin.depth._0;
|
|
return Point3D(origin.x * scale, origin.y * scale, z * scale);
|
|
}
|
|
|
|
/* static */
|
|
bool nsDisplayTransform::ComputePerspectiveMatrix(const nsIFrame* aFrame,
|
|
float aAppUnitsPerPixel,
|
|
Matrix4x4& aOutMatrix) {
|
|
MOZ_ASSERT(aFrame, "Can't get delta for a null frame!");
|
|
MOZ_ASSERT(aFrame->IsTransformed() || aFrame->BackfaceIsHidden() ||
|
|
aFrame->Combines3DTransformWithAncestors(),
|
|
"Shouldn't get a delta for an untransformed frame!");
|
|
MOZ_ASSERT(aOutMatrix.IsIdentity(), "Must have a blank output matrix");
|
|
|
|
if (!aFrame->IsTransformed()) {
|
|
return false;
|
|
}
|
|
|
|
// TODO: Is it possible that the perspectiveFrame's bounds haven't been set
|
|
// correctly yet (similar to the aBoundsOverride case for
|
|
// GetResultingTransformMatrix)?
|
|
nsIFrame* perspectiveFrame =
|
|
aFrame->GetClosestFlattenedTreeAncestorPrimaryFrame();
|
|
if (!perspectiveFrame) {
|
|
return false;
|
|
}
|
|
|
|
/* Grab the values for perspective and perspective-origin (if present) */
|
|
const nsStyleDisplay* perspectiveDisplay = perspectiveFrame->StyleDisplay();
|
|
if (perspectiveDisplay->mChildPerspective.IsNone()) {
|
|
return false;
|
|
}
|
|
|
|
MOZ_ASSERT(perspectiveDisplay->mChildPerspective.IsLength());
|
|
float perspective =
|
|
perspectiveDisplay->mChildPerspective.AsLength().ToCSSPixels();
|
|
perspective = std::max(1.0f, perspective);
|
|
if (perspective < std::numeric_limits<Float>::epsilon()) {
|
|
return true;
|
|
}
|
|
|
|
TransformReferenceBox refBox(perspectiveFrame);
|
|
|
|
Point perspectiveOrigin = nsStyleTransformMatrix::Convert2DPosition(
|
|
perspectiveDisplay->mPerspectiveOrigin.horizontal,
|
|
perspectiveDisplay->mPerspectiveOrigin.vertical, refBox,
|
|
aAppUnitsPerPixel);
|
|
|
|
/* GetOffsetTo computes the offset required to move from 0,0 in
|
|
* perspectiveFrame to 0,0 in aFrame. Although we actually want the inverse of
|
|
* this, it's faster to compute this way.
|
|
*/
|
|
nsPoint frameToPerspectiveOffset = -aFrame->GetOffsetTo(perspectiveFrame);
|
|
Point frameToPerspectiveGfxOffset(
|
|
NSAppUnitsToFloatPixels(frameToPerspectiveOffset.x, aAppUnitsPerPixel),
|
|
NSAppUnitsToFloatPixels(frameToPerspectiveOffset.y, aAppUnitsPerPixel));
|
|
|
|
/* Move the perspective origin to be relative to aFrame, instead of relative
|
|
* to the containing block which is how it was specified in the style system.
|
|
*/
|
|
perspectiveOrigin += frameToPerspectiveGfxOffset;
|
|
|
|
aOutMatrix._34 =
|
|
-1.0 / NSAppUnitsToFloatPixels(CSSPixel::ToAppUnits(perspective),
|
|
aAppUnitsPerPixel);
|
|
|
|
aOutMatrix.ChangeBasis(Point3D(perspectiveOrigin.x, perspectiveOrigin.y, 0));
|
|
return true;
|
|
}
|
|
|
|
nsDisplayTransform::FrameTransformProperties::FrameTransformProperties(
|
|
const nsIFrame* aFrame, TransformReferenceBox& aRefBox,
|
|
float aAppUnitsPerPixel)
|
|
: mFrame(aFrame),
|
|
mTranslate(aFrame->StyleDisplay()->mTranslate),
|
|
mRotate(aFrame->StyleDisplay()->mRotate),
|
|
mScale(aFrame->StyleDisplay()->mScale),
|
|
mTransform(aFrame->StyleDisplay()->mTransform),
|
|
mMotion(aFrame->StyleDisplay()->mOffsetPath.IsNone()
|
|
? Nothing()
|
|
: MotionPathUtils::ResolveMotionPath(aFrame, aRefBox)),
|
|
mToTransformOrigin(
|
|
GetDeltaToTransformOrigin(aFrame, aRefBox, aAppUnitsPerPixel)) {}
|
|
|
|
/* Wraps up the transform matrix in a change-of-basis matrix pair that
|
|
* translates from local coordinate space to transform coordinate space, then
|
|
* hands it back.
|
|
*/
|
|
Matrix4x4 nsDisplayTransform::GetResultingTransformMatrix(
|
|
const FrameTransformProperties& aProperties, TransformReferenceBox& aRefBox,
|
|
float aAppUnitsPerPixel) {
|
|
return GetResultingTransformMatrixInternal(aProperties, aRefBox, nsPoint(),
|
|
aAppUnitsPerPixel, 0);
|
|
}
|
|
|
|
Matrix4x4 nsDisplayTransform::GetResultingTransformMatrix(
|
|
const nsIFrame* aFrame, const nsPoint& aOrigin, float aAppUnitsPerPixel,
|
|
uint32_t aFlags) {
|
|
TransformReferenceBox refBox(aFrame);
|
|
FrameTransformProperties props(aFrame, refBox, aAppUnitsPerPixel);
|
|
return GetResultingTransformMatrixInternal(props, refBox, aOrigin,
|
|
aAppUnitsPerPixel, aFlags);
|
|
}
|
|
|
|
Matrix4x4 nsDisplayTransform::GetResultingTransformMatrixInternal(
|
|
const FrameTransformProperties& aProperties, TransformReferenceBox& aRefBox,
|
|
const nsPoint& aOrigin, float aAppUnitsPerPixel, uint32_t aFlags) {
|
|
const nsIFrame* frame = aProperties.mFrame;
|
|
NS_ASSERTION(frame || !(aFlags & INCLUDE_PERSPECTIVE),
|
|
"Must have a frame to compute perspective!");
|
|
|
|
// IncrementScaleRestyleCountIfNeeded in ActiveLayerTracker.cpp is a
|
|
// simplified copy of this function.
|
|
|
|
// Get the underlying transform matrix:
|
|
|
|
/* Get the matrix, then change its basis to factor in the origin. */
|
|
Matrix4x4 result;
|
|
|
|
// See the comment for SVGContainerFrame::HasChildrenOnlyTransform for
|
|
// an explanation of what children-only transforms are.
|
|
Matrix parentsChildrenOnlyTransform;
|
|
const bool parentHasChildrenOnlyTransform =
|
|
frame && frame->HasAnyStateBits(NS_FRAME_MAY_BE_TRANSFORMED) &&
|
|
frame->GetParentSVGTransforms(&parentsChildrenOnlyTransform) &&
|
|
!parentsChildrenOnlyTransform.IsIdentity();
|
|
bool shouldRound = nsLayoutUtils::ShouldSnapToGrid(frame);
|
|
|
|
/* Transformed frames always have a transform, or are preserving 3d (and might
|
|
* still have perspective!) */
|
|
if (aProperties.HasTransform()) {
|
|
result = nsStyleTransformMatrix::ReadTransforms(
|
|
aProperties.mTranslate, aProperties.mRotate, aProperties.mScale,
|
|
aProperties.mMotion.ptrOr(nullptr), aProperties.mTransform, aRefBox,
|
|
aAppUnitsPerPixel);
|
|
}
|
|
|
|
// Apply any translation due to 'transform-origin' and/or 'transform-box':
|
|
result.ChangeBasis(aProperties.mToTransformOrigin);
|
|
|
|
if (parentHasChildrenOnlyTransform) {
|
|
float pixelsPerCSSPx = AppUnitsPerCSSPixel() / aAppUnitsPerPixel;
|
|
parentsChildrenOnlyTransform._31 *= pixelsPerCSSPx;
|
|
parentsChildrenOnlyTransform._32 *= pixelsPerCSSPx;
|
|
|
|
Point3D frameOffset(
|
|
NSAppUnitsToFloatPixels(-frame->GetPosition().x, aAppUnitsPerPixel),
|
|
NSAppUnitsToFloatPixels(-frame->GetPosition().y, aAppUnitsPerPixel), 0);
|
|
Matrix4x4 parentsChildrenOnlyTransform3D =
|
|
Matrix4x4::From2D(parentsChildrenOnlyTransform)
|
|
.ChangeBasis(frameOffset);
|
|
|
|
result *= parentsChildrenOnlyTransform3D;
|
|
}
|
|
|
|
Matrix4x4 perspectiveMatrix;
|
|
bool hasPerspective = aFlags & INCLUDE_PERSPECTIVE;
|
|
if (hasPerspective) {
|
|
if (ComputePerspectiveMatrix(frame, aAppUnitsPerPixel, perspectiveMatrix)) {
|
|
result *= perspectiveMatrix;
|
|
}
|
|
}
|
|
|
|
if ((aFlags & INCLUDE_PRESERVE3D_ANCESTORS) && frame &&
|
|
frame->Combines3DTransformWithAncestors()) {
|
|
// Include the transform set on our parent
|
|
nsIFrame* parentFrame =
|
|
frame->GetClosestFlattenedTreeAncestorPrimaryFrame();
|
|
NS_ASSERTION(parentFrame && parentFrame->IsTransformed() &&
|
|
parentFrame->Extend3DContext(),
|
|
"Preserve3D mismatch!");
|
|
TransformReferenceBox refBox(parentFrame);
|
|
FrameTransformProperties props(parentFrame, refBox, aAppUnitsPerPixel);
|
|
|
|
uint32_t flags =
|
|
aFlags & (INCLUDE_PRESERVE3D_ANCESTORS | INCLUDE_PERSPECTIVE);
|
|
|
|
// If this frame isn't transformed (but we exist for backface-visibility),
|
|
// then we're not a reference frame so no offset to origin will be added.
|
|
// Otherwise we need to manually translate into our parent's coordinate
|
|
// space.
|
|
if (frame->IsTransformed()) {
|
|
nsLayoutUtils::PostTranslate(result, frame->GetPosition(),
|
|
aAppUnitsPerPixel, shouldRound);
|
|
}
|
|
Matrix4x4 parent = GetResultingTransformMatrixInternal(
|
|
props, refBox, nsPoint(0, 0), aAppUnitsPerPixel, flags);
|
|
result = result * parent;
|
|
}
|
|
|
|
if (aFlags & OFFSET_BY_ORIGIN) {
|
|
nsLayoutUtils::PostTranslate(result, aOrigin, aAppUnitsPerPixel,
|
|
shouldRound);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
bool nsDisplayOpacity::CanUseAsyncAnimations(nsDisplayListBuilder* aBuilder) {
|
|
static constexpr nsCSSPropertyIDSet opacitySet =
|
|
nsCSSPropertyIDSet::OpacityProperties();
|
|
if (ActiveLayerTracker::IsStyleAnimated(aBuilder, mFrame, opacitySet)) {
|
|
return true;
|
|
}
|
|
|
|
EffectCompositor::SetPerformanceWarning(
|
|
mFrame, opacitySet,
|
|
AnimationPerformanceWarning(
|
|
AnimationPerformanceWarning::Type::OpacityFrameInactive));
|
|
|
|
return false;
|
|
}
|
|
|
|
bool nsDisplayTransform::CanUseAsyncAnimations(nsDisplayListBuilder* aBuilder) {
|
|
return mPrerenderDecision != PrerenderDecision::No;
|
|
}
|
|
|
|
bool nsDisplayBackgroundColor::CanUseAsyncAnimations(
|
|
nsDisplayListBuilder* aBuilder) {
|
|
return StaticPrefs::gfx_omta_background_color();
|
|
}
|
|
|
|
static bool IsInStickyPositionedSubtree(const nsIFrame* aFrame) {
|
|
for (const nsIFrame* frame = aFrame; frame;
|
|
frame = nsLayoutUtils::GetCrossDocParentFrameInProcess(frame)) {
|
|
if (frame->IsStickyPositioned()) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static bool ShouldUsePartialPrerender(const nsIFrame* aFrame) {
|
|
return StaticPrefs::layout_animation_prerender_partial() &&
|
|
// Bug 1642547: Support partial prerender for position:sticky elements.
|
|
!IsInStickyPositionedSubtree(aFrame);
|
|
}
|
|
|
|
/* static */
|
|
auto nsDisplayTransform::ShouldPrerenderTransformedContent(
|
|
nsDisplayListBuilder* aBuilder, nsIFrame* aFrame,
|
|
nsRect* aDirtyRect) -> PrerenderInfo {
|
|
PrerenderInfo result;
|
|
// If we are in a preserve-3d tree, and we've disallowed async animations, we
|
|
// return No prerender decision directly.
|
|
if ((aFrame->Extend3DContext() ||
|
|
aFrame->Combines3DTransformWithAncestors()) &&
|
|
!aBuilder->GetPreserves3DAllowAsyncAnimation()) {
|
|
return result;
|
|
}
|
|
|
|
// Elements whose transform has been modified recently, or which
|
|
// have a compositor-animated transform, can be prerendered. An element
|
|
// might have only just had its transform animated in which case
|
|
// the ActiveLayerManager may not have been notified yet.
|
|
static constexpr nsCSSPropertyIDSet transformSet =
|
|
nsCSSPropertyIDSet::TransformLikeProperties();
|
|
if (!ActiveLayerTracker::IsTransformMaybeAnimated(aFrame) &&
|
|
!EffectCompositor::HasAnimationsForCompositor(
|
|
aFrame, DisplayItemType::TYPE_TRANSFORM)) {
|
|
EffectCompositor::SetPerformanceWarning(
|
|
aFrame, transformSet,
|
|
AnimationPerformanceWarning(
|
|
AnimationPerformanceWarning::Type::TransformFrameInactive));
|
|
|
|
// This case happens when we're sure that the frame is not animated and its
|
|
// preserve-3d ancestors are not, either. So we don't need to pre-render.
|
|
// However, this decision shouldn't affect the decisions for other frames in
|
|
// the preserve-3d context. We need this flag to determine whether we should
|
|
// block async animations on other frames in the current preserve-3d tree.
|
|
result.mHasAnimations = false;
|
|
return result;
|
|
}
|
|
|
|
// We should not allow prerender if any ancestor container element has
|
|
// mask/clip-path effects.
|
|
//
|
|
// With prerender and async transform animation, we do not need to restyle an
|
|
// animated element to respect position changes, since that transform is done
|
|
// by layer animation. As a result, the container element is not aware of
|
|
// position change of that containing element and loses the chance to update
|
|
// the content of mask/clip-path.
|
|
//
|
|
// Why do we need to update a mask? This is relative to how we generate a
|
|
// mask layer in ContainerState::SetupMaskLayerForCSSMask. While creating a
|
|
// mask layer, to reduce memory usage, we did not choose the size of the
|
|
// masked element as mask size. Instead, we read the union of bounds of all
|
|
// children display items by nsDisplayWrapList::GetBounds, which is smaller
|
|
// than or equal to the masked element's boundary, and use it as the position
|
|
// size of the mask layer. That union bounds is actually affected by the
|
|
// geometry of the animated element. To keep the content of mask up to date,
|
|
// forbidding of prerender is required.
|
|
for (nsIFrame* container =
|
|
nsLayoutUtils::GetCrossDocParentFrameInProcess(aFrame);
|
|
container;
|
|
container = nsLayoutUtils::GetCrossDocParentFrameInProcess(container)) {
|
|
const nsStyleSVGReset* svgReset = container->StyleSVGReset();
|
|
if (svgReset->HasMask() || svgReset->HasClipPath()) {
|
|
return result;
|
|
}
|
|
}
|
|
|
|
// If the incoming dirty rect already contains the entire overflow area,
|
|
// we are already rendering the entire content.
|
|
nsRect overflow = aFrame->InkOverflowRectRelativeToSelf();
|
|
// UntransformRect will not touch the output rect (`&untranformedDirtyRect`)
|
|
// in cases of non-invertible transforms, so we set `untransformedRect` to
|
|
// `aDirtyRect` as an initial value for such cases.
|
|
nsRect untransformedDirtyRect = *aDirtyRect;
|
|
UntransformRect(*aDirtyRect, overflow, aFrame, &untransformedDirtyRect);
|
|
if (untransformedDirtyRect.Contains(overflow)) {
|
|
*aDirtyRect = untransformedDirtyRect;
|
|
result.mDecision = PrerenderDecision::Full;
|
|
return result;
|
|
}
|
|
|
|
float viewportRatio =
|
|
StaticPrefs::layout_animation_prerender_viewport_ratio_limit();
|
|
uint32_t absoluteLimitX =
|
|
StaticPrefs::layout_animation_prerender_absolute_limit_x();
|
|
uint32_t absoluteLimitY =
|
|
StaticPrefs::layout_animation_prerender_absolute_limit_y();
|
|
nsSize refSize = aBuilder->RootReferenceFrame()->GetSize();
|
|
|
|
float resolution = aFrame->PresShell()->GetCumulativeResolution();
|
|
if (resolution < 1.0f) {
|
|
refSize.SizeTo(
|
|
NSCoordSaturatingNonnegativeMultiply(refSize.width, 1.0f / resolution),
|
|
NSCoordSaturatingNonnegativeMultiply(refSize.height,
|
|
1.0f / resolution));
|
|
}
|
|
|
|
// Only prerender if the transformed frame's size is <= a multiple of the
|
|
// reference frame size (~viewport), and less than an absolute limit.
|
|
// Both the ratio and the absolute limit are configurable.
|
|
nscoord maxLength = std::max(nscoord(refSize.width * viewportRatio),
|
|
nscoord(refSize.height * viewportRatio));
|
|
nsSize relativeLimit(maxLength, maxLength);
|
|
nsSize absoluteLimit(
|
|
aFrame->PresContext()->DevPixelsToAppUnits(absoluteLimitX),
|
|
aFrame->PresContext()->DevPixelsToAppUnits(absoluteLimitY));
|
|
nsSize maxSize = Min(relativeLimit, absoluteLimit);
|
|
|
|
const auto transform = nsLayoutUtils::GetTransformToAncestor(
|
|
RelativeTo{aFrame},
|
|
RelativeTo{nsLayoutUtils::GetDisplayRootFrame(aFrame)});
|
|
const gfxRect transformedBounds = transform.TransformAndClipBounds(
|
|
gfxRect(overflow.x, overflow.y, overflow.width, overflow.height),
|
|
gfxRect::MaxIntRect());
|
|
const nsSize frameSize =
|
|
nsSize(transformedBounds.width, transformedBounds.height);
|
|
|
|
uint64_t maxLimitArea = uint64_t(maxSize.width) * maxSize.height;
|
|
uint64_t frameArea = uint64_t(frameSize.width) * frameSize.height;
|
|
if (frameArea <= maxLimitArea && frameSize <= absoluteLimit) {
|
|
*aDirtyRect = overflow;
|
|
result.mDecision = PrerenderDecision::Full;
|
|
return result;
|
|
}
|
|
|
|
if (ShouldUsePartialPrerender(aFrame)) {
|
|
*aDirtyRect = nsLayoutUtils::ComputePartialPrerenderArea(
|
|
aFrame, untransformedDirtyRect, overflow, maxSize);
|
|
result.mDecision = PrerenderDecision::Partial;
|
|
return result;
|
|
}
|
|
|
|
if (frameArea > maxLimitArea) {
|
|
uint64_t appUnitsPerPixel = AppUnitsPerCSSPixel();
|
|
EffectCompositor::SetPerformanceWarning(
|
|
aFrame, transformSet,
|
|
AnimationPerformanceWarning(
|
|
AnimationPerformanceWarning::Type::ContentTooLargeArea,
|
|
{
|
|
int(frameArea / (appUnitsPerPixel * appUnitsPerPixel)),
|
|
int(maxLimitArea / (appUnitsPerPixel * appUnitsPerPixel)),
|
|
}));
|
|
} else {
|
|
EffectCompositor::SetPerformanceWarning(
|
|
aFrame, transformSet,
|
|
AnimationPerformanceWarning(
|
|
AnimationPerformanceWarning::Type::ContentTooLarge,
|
|
{
|
|
nsPresContext::AppUnitsToIntCSSPixels(frameSize.width),
|
|
nsPresContext::AppUnitsToIntCSSPixels(frameSize.height),
|
|
nsPresContext::AppUnitsToIntCSSPixels(relativeLimit.width),
|
|
nsPresContext::AppUnitsToIntCSSPixels(relativeLimit.height),
|
|
nsPresContext::AppUnitsToIntCSSPixels(absoluteLimit.width),
|
|
nsPresContext::AppUnitsToIntCSSPixels(absoluteLimit.height),
|
|
}));
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/* If the matrix is singular, or a hidden backface is shown, the frame won't be
|
|
* visible or hit. */
|
|
static bool IsFrameVisible(nsIFrame* aFrame, const Matrix4x4& aMatrix) {
|
|
if (aMatrix.IsSingular()) {
|
|
return false;
|
|
}
|
|
if (aFrame->BackfaceIsHidden() && aMatrix.IsBackfaceVisible()) {
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
const Matrix4x4Flagged& nsDisplayTransform::GetTransform() const {
|
|
if (mTransform) {
|
|
return *mTransform;
|
|
}
|
|
|
|
float scale = mFrame->PresContext()->AppUnitsPerDevPixel();
|
|
|
|
if (mHasTransformGetter) {
|
|
mTransform.emplace((mFrame->GetTransformGetter())(mFrame, scale));
|
|
Point3D newOrigin =
|
|
Point3D(NSAppUnitsToFloatPixels(mToReferenceFrame.x, scale),
|
|
NSAppUnitsToFloatPixels(mToReferenceFrame.y, scale), 0.0f);
|
|
mTransform->ChangeBasis(newOrigin.x, newOrigin.y, newOrigin.z);
|
|
} else if (!mIsTransformSeparator) {
|
|
DebugOnly<bool> isReference = mFrame->IsTransformed() ||
|
|
mFrame->Combines3DTransformWithAncestors() ||
|
|
mFrame->Extend3DContext();
|
|
MOZ_ASSERT(isReference);
|
|
mTransform.emplace(
|
|
GetResultingTransformMatrix(mFrame, ToReferenceFrame(), scale,
|
|
INCLUDE_PERSPECTIVE | OFFSET_BY_ORIGIN));
|
|
} else {
|
|
// Use identity matrix
|
|
mTransform.emplace();
|
|
}
|
|
|
|
return *mTransform;
|
|
}
|
|
|
|
const Matrix4x4Flagged& nsDisplayTransform::GetInverseTransform() const {
|
|
if (mInverseTransform) {
|
|
return *mInverseTransform;
|
|
}
|
|
|
|
MOZ_ASSERT(!GetTransform().IsSingular());
|
|
|
|
mInverseTransform.emplace(GetTransform().Inverse());
|
|
|
|
return *mInverseTransform;
|
|
}
|
|
|
|
Matrix4x4 nsDisplayTransform::GetTransformForRendering(
|
|
LayoutDevicePoint* aOutOrigin) const {
|
|
if (!mFrame->HasPerspective() || mHasTransformGetter ||
|
|
mIsTransformSeparator) {
|
|
if (!mHasTransformGetter && !mIsTransformSeparator && aOutOrigin) {
|
|
// If aOutOrigin is provided, put the offset to origin into it, because
|
|
// we need to keep it separate for webrender. The combination of
|
|
// *aOutOrigin and the returned matrix here should always be equivalent
|
|
// to what GetTransform() would have returned.
|
|
float scale = mFrame->PresContext()->AppUnitsPerDevPixel();
|
|
*aOutOrigin = LayoutDevicePoint::FromAppUnits(ToReferenceFrame(), scale);
|
|
|
|
// The rounding behavior should also be the same as GetTransform().
|
|
if (nsLayoutUtils::ShouldSnapToGrid(mFrame)) {
|
|
aOutOrigin->Round();
|
|
}
|
|
return GetResultingTransformMatrix(mFrame, nsPoint(0, 0), scale,
|
|
INCLUDE_PERSPECTIVE);
|
|
}
|
|
return GetTransform().GetMatrix();
|
|
}
|
|
MOZ_ASSERT(!mHasTransformGetter);
|
|
|
|
float scale = mFrame->PresContext()->AppUnitsPerDevPixel();
|
|
// Don't include perspective transform, or the offset to origin, since
|
|
// nsDisplayPerspective will handle both of those.
|
|
return GetResultingTransformMatrix(mFrame, ToReferenceFrame(), scale, 0);
|
|
}
|
|
|
|
const Matrix4x4& nsDisplayTransform::GetAccumulatedPreserved3DTransform(
|
|
nsDisplayListBuilder* aBuilder) {
|
|
MOZ_ASSERT(!mFrame->Extend3DContext() || IsLeafOf3DContext());
|
|
|
|
if (!IsLeafOf3DContext()) {
|
|
return GetTransform().GetMatrix();
|
|
}
|
|
|
|
if (!mTransformPreserves3D) {
|
|
const nsIFrame* establisher; // Establisher of the 3D rendering context.
|
|
for (establisher = mFrame;
|
|
establisher && establisher->Combines3DTransformWithAncestors();
|
|
establisher =
|
|
establisher->GetClosestFlattenedTreeAncestorPrimaryFrame()) {
|
|
}
|
|
const nsIFrame* establisherReference = aBuilder->FindReferenceFrameFor(
|
|
nsLayoutUtils::GetCrossDocParentFrameInProcess(establisher));
|
|
|
|
nsPoint offset = establisher->GetOffsetToCrossDoc(establisherReference);
|
|
float scale = mFrame->PresContext()->AppUnitsPerDevPixel();
|
|
uint32_t flags =
|
|
INCLUDE_PRESERVE3D_ANCESTORS | INCLUDE_PERSPECTIVE | OFFSET_BY_ORIGIN;
|
|
mTransformPreserves3D = MakeUnique<Matrix4x4>(
|
|
GetResultingTransformMatrix(mFrame, offset, scale, flags));
|
|
}
|
|
|
|
return *mTransformPreserves3D;
|
|
}
|
|
|
|
bool nsDisplayTransform::CreateWebRenderCommands(
|
|
wr::DisplayListBuilder& aBuilder, wr::IpcResourceUpdateQueue& aResources,
|
|
const StackingContextHelper& aSc, RenderRootStateManager* aManager,
|
|
nsDisplayListBuilder* aDisplayListBuilder) {
|
|
// We want to make sure we don't pollute the transform property in the WR
|
|
// stacking context by including the position of this frame (relative to the
|
|
// parent reference frame). We need to keep those separate; the position of
|
|
// this frame goes into the stacking context bounds while the transform goes
|
|
// into the transform.
|
|
LayoutDevicePoint position;
|
|
Matrix4x4 newTransformMatrix = GetTransformForRendering(&position);
|
|
|
|
gfx::Matrix4x4* transformForSC = &newTransformMatrix;
|
|
if (newTransformMatrix.IsIdentity()) {
|
|
// If the transform is an identity transform, strip it out so that WR
|
|
// doesn't turn this stacking context into a reference frame, as it
|
|
// affects positioning. Bug 1345577 tracks a better fix.
|
|
transformForSC = nullptr;
|
|
|
|
// In ChooseScaleAndSetTransform, we round the offset from the reference
|
|
// frame used to adjust the transform, if there is no transform, or it
|
|
// is just a translation. We need to do the same here.
|
|
if (nsLayoutUtils::ShouldSnapToGrid(mFrame)) {
|
|
position.Round();
|
|
}
|
|
}
|
|
|
|
auto key = wr::SpatialKey(uint64_t(mFrame), GetPerFrameKey(),
|
|
wr::SpatialKeyKind::Transform);
|
|
|
|
// We don't send animations for transform separator display items.
|
|
uint64_t animationsId =
|
|
mIsTransformSeparator
|
|
? 0
|
|
: AddAnimationsForWebRender(
|
|
this, aManager, aDisplayListBuilder,
|
|
IsPartialPrerender() ? Some(position) : Nothing());
|
|
wr::WrAnimationProperty prop{wr::WrAnimationType::Transform, animationsId,
|
|
key};
|
|
|
|
nsDisplayTransform* deferredTransformItem = nullptr;
|
|
if (ShouldDeferTransform()) {
|
|
// If it has perspective, we create a new scroll data via the
|
|
// UpdateScrollData call because that scenario is more complex. Otherwise,
|
|
// if we don't contain any ASRs then just stash the transform on the
|
|
// StackingContextHelper and apply it to any scroll data that are created
|
|
// inside this nsDisplayTransform.
|
|
deferredTransformItem = this;
|
|
}
|
|
|
|
// Determine if we're possibly animated (= would need an active layer in FLB).
|
|
bool animated = !mIsTransformSeparator &&
|
|
ActiveLayerTracker::IsTransformMaybeAnimated(Frame());
|
|
|
|
wr::StackingContextParams params;
|
|
params.mBoundTransform = &newTransformMatrix;
|
|
params.animation = animationsId ? &prop : nullptr;
|
|
|
|
if (mWrapsBackdropFilter) {
|
|
params.flags |= wr::StackingContextFlags::WRAPS_BACKDROP_FILTER;
|
|
}
|
|
|
|
wr::WrTransformInfo transform_info;
|
|
if (transformForSC) {
|
|
transform_info.transform = wr::ToLayoutTransform(newTransformMatrix);
|
|
transform_info.key = key;
|
|
params.mTransformPtr = &transform_info;
|
|
} else {
|
|
params.mTransformPtr = nullptr;
|
|
}
|
|
|
|
params.prim_flags = !BackfaceIsHidden()
|
|
? wr::PrimitiveFlags::IS_BACKFACE_VISIBLE
|
|
: wr::PrimitiveFlags{0};
|
|
params.paired_with_perspective = mHasAssociatedPerspective;
|
|
params.mDeferredTransformItem = deferredTransformItem;
|
|
params.mAnimated = animated;
|
|
// Determine if we would have to rasterize any items in local raster space
|
|
// (i.e. disable subpixel AA). We don't always need to rasterize locally even
|
|
// if the stacking context is possibly animated (at the cost of potentially
|
|
// some false negatives with respect to will-change handling), so we pass in
|
|
// this determination separately to accurately match with when FLB would
|
|
// normally disable subpixel AA.
|
|
params.mRasterizeLocally = animated && Frame()->HasAnimationOfTransform();
|
|
params.SetPreserve3D(mFrame->Extend3DContext() && !mIsTransformSeparator);
|
|
params.clip =
|
|
wr::WrStackingContextClip::ClipChain(aBuilder.CurrentClipChainId());
|
|
|
|
LayoutDeviceSize boundsSize = LayoutDeviceSize::FromAppUnits(
|
|
mChildBounds.Size(), mFrame->PresContext()->AppUnitsPerDevPixel());
|
|
|
|
StackingContextHelper sc(aSc, GetActiveScrolledRoot(), mFrame, this, aBuilder,
|
|
params, LayoutDeviceRect(position, boundsSize));
|
|
|
|
aManager->CommandBuilder().CreateWebRenderCommandsFromDisplayList(
|
|
GetChildren(), this, aDisplayListBuilder, sc, aBuilder, aResources);
|
|
return true;
|
|
}
|
|
|
|
bool nsDisplayTransform::UpdateScrollData(
|
|
WebRenderScrollData* aData, WebRenderLayerScrollData* aLayerData) {
|
|
if (ShouldDeferTransform()) {
|
|
// This case is handled in CreateWebRenderCommands by stashing the transform
|
|
// on the stacking context.
|
|
return false;
|
|
}
|
|
if (aLayerData) {
|
|
aLayerData->SetTransform(GetTransform().GetMatrix());
|
|
aLayerData->SetTransformIsPerspective(mFrame->ChildrenHavePerspective());
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool nsDisplayTransform::ShouldSkipTransform(
|
|
nsDisplayListBuilder* aBuilder) const {
|
|
return (aBuilder->RootReferenceFrame() == mFrame) &&
|
|
aBuilder->IsForGenerateGlyphMask();
|
|
}
|
|
|
|
void nsDisplayTransform::Collect3DTransformLeaves(
|
|
nsDisplayListBuilder* aBuilder, nsTArray<nsDisplayTransform*>& aLeaves) {
|
|
if (!IsParticipating3DContext() || IsLeafOf3DContext()) {
|
|
aLeaves.AppendElement(this);
|
|
return;
|
|
}
|
|
|
|
FlattenedDisplayListIterator iter(aBuilder, &mChildren);
|
|
while (iter.HasNext()) {
|
|
nsDisplayItem* item = iter.GetNextItem();
|
|
if (item->GetType() == DisplayItemType::TYPE_PERSPECTIVE) {
|
|
auto* perspective = static_cast<nsDisplayPerspective*>(item);
|
|
if (!perspective->GetChildren()->GetTop()) {
|
|
continue;
|
|
}
|
|
item = perspective->GetChildren()->GetTop();
|
|
}
|
|
if (item->GetType() != DisplayItemType::TYPE_TRANSFORM) {
|
|
gfxCriticalError() << "Invalid child item within 3D transform of type: "
|
|
<< item->Name();
|
|
continue;
|
|
}
|
|
static_cast<nsDisplayTransform*>(item)->Collect3DTransformLeaves(aBuilder,
|
|
aLeaves);
|
|
}
|
|
}
|
|
|
|
static RefPtr<gfx::Path> BuildPathFromPolygon(const RefPtr<DrawTarget>& aDT,
|
|
const gfx::Polygon& aPolygon) {
|
|
MOZ_ASSERT(!aPolygon.IsEmpty());
|
|
|
|
RefPtr<PathBuilder> pathBuilder = aDT->CreatePathBuilder();
|
|
const nsTArray<Point4D>& points = aPolygon.GetPoints();
|
|
|
|
pathBuilder->MoveTo(points[0].As2DPoint());
|
|
|
|
for (size_t i = 1; i < points.Length(); ++i) {
|
|
pathBuilder->LineTo(points[i].As2DPoint());
|
|
}
|
|
|
|
pathBuilder->Close();
|
|
return pathBuilder->Finish();
|
|
}
|
|
|
|
void nsDisplayTransform::CollectSorted3DTransformLeaves(
|
|
nsDisplayListBuilder* aBuilder, nsTArray<TransformPolygon>& aLeaves) {
|
|
std::list<TransformPolygon> inputLayers;
|
|
|
|
nsTArray<nsDisplayTransform*> leaves;
|
|
Collect3DTransformLeaves(aBuilder, leaves);
|
|
for (nsDisplayTransform* item : leaves) {
|
|
auto bounds = LayoutDeviceRect::FromAppUnits(
|
|
item->mChildBounds, item->mFrame->PresContext()->AppUnitsPerDevPixel());
|
|
Matrix4x4 transform = item->GetAccumulatedPreserved3DTransform(aBuilder);
|
|
|
|
if (!IsFrameVisible(item->mFrame, transform)) {
|
|
continue;
|
|
}
|
|
gfx::Polygon polygon =
|
|
gfx::Polygon::FromRect(gfx::Rect(bounds.ToUnknownRect()));
|
|
|
|
polygon.TransformToScreenSpace(transform);
|
|
|
|
if (polygon.GetPoints().Length() >= 3) {
|
|
inputLayers.push_back(TransformPolygon(item, std::move(polygon)));
|
|
}
|
|
}
|
|
|
|
if (inputLayers.empty()) {
|
|
return;
|
|
}
|
|
|
|
BSPTree<nsDisplayTransform> tree(inputLayers);
|
|
nsTArray<TransformPolygon> orderedLayers(tree.GetDrawOrder());
|
|
|
|
for (TransformPolygon& polygon : orderedLayers) {
|
|
Matrix4x4 inverse =
|
|
polygon.data->GetAccumulatedPreserved3DTransform(aBuilder).Inverse();
|
|
|
|
MOZ_ASSERT(polygon.geometry);
|
|
polygon.geometry->TransformToLayerSpace(inverse);
|
|
}
|
|
|
|
aLeaves = std::move(orderedLayers);
|
|
}
|
|
|
|
void nsDisplayTransform::Paint(nsDisplayListBuilder* aBuilder,
|
|
gfxContext* aCtx) {
|
|
Paint(aBuilder, aCtx, Nothing());
|
|
}
|
|
|
|
void nsDisplayTransform::Paint(nsDisplayListBuilder* aBuilder, gfxContext* aCtx,
|
|
const Maybe<gfx::Polygon>& aPolygon) {
|
|
if (IsParticipating3DContext() && !IsLeafOf3DContext()) {
|
|
MOZ_ASSERT(!aPolygon);
|
|
nsTArray<TransformPolygon> leaves;
|
|
CollectSorted3DTransformLeaves(aBuilder, leaves);
|
|
for (TransformPolygon& item : leaves) {
|
|
item.data->Paint(aBuilder, aCtx, item.geometry);
|
|
}
|
|
return;
|
|
}
|
|
|
|
gfxContextMatrixAutoSaveRestore saveMatrix(aCtx);
|
|
Matrix4x4 trans = ShouldSkipTransform(aBuilder)
|
|
? Matrix4x4()
|
|
: GetAccumulatedPreserved3DTransform(aBuilder);
|
|
if (!IsFrameVisible(mFrame, trans)) {
|
|
return;
|
|
}
|
|
|
|
Matrix trans2d;
|
|
if (trans.CanDraw2D(&trans2d)) {
|
|
aCtx->Multiply(ThebesMatrix(trans2d));
|
|
|
|
if (aPolygon) {
|
|
RefPtr<gfx::Path> path =
|
|
BuildPathFromPolygon(aCtx->GetDrawTarget(), *aPolygon);
|
|
aCtx->GetDrawTarget()->PushClip(path);
|
|
}
|
|
|
|
GetChildren()->Paint(aBuilder, aCtx,
|
|
mFrame->PresContext()->AppUnitsPerDevPixel());
|
|
|
|
if (aPolygon) {
|
|
aCtx->GetDrawTarget()->PopClip();
|
|
}
|
|
return;
|
|
}
|
|
|
|
// TODO: Implement 3d transform handling, including plane splitting and
|
|
// sorting. See BasicCompositor.
|
|
auto pixelBounds = LayoutDeviceRect::FromAppUnitsToOutside(
|
|
mChildBounds, mFrame->PresContext()->AppUnitsPerDevPixel());
|
|
RefPtr<DrawTarget> untransformedDT =
|
|
gfxPlatform::GetPlatform()->CreateOffscreenContentDrawTarget(
|
|
IntSize(pixelBounds.Width(), pixelBounds.Height()),
|
|
SurfaceFormat::B8G8R8A8, true);
|
|
if (!untransformedDT || !untransformedDT->IsValid()) {
|
|
return;
|
|
}
|
|
untransformedDT->SetTransform(
|
|
Matrix::Translation(-Point(pixelBounds.X(), pixelBounds.Y())));
|
|
|
|
gfxContext groupTarget(untransformedDT, /* aPreserveTransform */ true);
|
|
|
|
if (aPolygon) {
|
|
RefPtr<gfx::Path> path =
|
|
BuildPathFromPolygon(aCtx->GetDrawTarget(), *aPolygon);
|
|
aCtx->GetDrawTarget()->PushClip(path);
|
|
}
|
|
|
|
GetChildren()->Paint(aBuilder, &groupTarget,
|
|
mFrame->PresContext()->AppUnitsPerDevPixel());
|
|
|
|
if (aPolygon) {
|
|
aCtx->GetDrawTarget()->PopClip();
|
|
}
|
|
|
|
RefPtr<SourceSurface> untransformedSurf = untransformedDT->Snapshot();
|
|
|
|
trans.PreTranslate(pixelBounds.X(), pixelBounds.Y(), 0);
|
|
aCtx->GetDrawTarget()->Draw3DTransformedSurface(untransformedSurf, trans);
|
|
}
|
|
|
|
bool nsDisplayTransform::MayBeAnimated(nsDisplayListBuilder* aBuilder) const {
|
|
// If EffectCompositor::HasAnimationsForCompositor() is true then we can
|
|
// completely bypass the main thread for this animation, so it is always
|
|
// worthwhile.
|
|
// For ActiveLayerTracker::IsTransformAnimated() cases the main thread is
|
|
// already involved so there is less to be gained.
|
|
// Therefore we check that the *post-transform* bounds of this item are
|
|
// big enough to justify an active layer.
|
|
return EffectCompositor::HasAnimationsForCompositor(
|
|
mFrame, DisplayItemType::TYPE_TRANSFORM) ||
|
|
(ActiveLayerTracker::IsTransformAnimated(aBuilder, mFrame));
|
|
}
|
|
|
|
nsRect nsDisplayTransform::TransformUntransformedBounds(
|
|
nsDisplayListBuilder* aBuilder, const Matrix4x4Flagged& aMatrix) const {
|
|
bool snap;
|
|
const nsRect untransformedBounds = GetUntransformedBounds(aBuilder, &snap);
|
|
// GetTransform always operates in dev pixels.
|
|
const float factor = mFrame->PresContext()->AppUnitsPerDevPixel();
|
|
return nsLayoutUtils::MatrixTransformRect(untransformedBounds, aMatrix,
|
|
factor);
|
|
}
|
|
|
|
/**
|
|
* Returns the bounds for this transform. The bounds are calculated during
|
|
* display list building and merging, see |nsDisplayTransform::UpdateBounds()|.
|
|
*/
|
|
nsRect nsDisplayTransform::GetBounds(nsDisplayListBuilder* aBuilder,
|
|
bool* aSnap) const {
|
|
*aSnap = false;
|
|
return mBounds;
|
|
}
|
|
|
|
void nsDisplayTransform::ComputeBounds(nsDisplayListBuilder* aBuilder) {
|
|
MOZ_ASSERT(mFrame->Extend3DContext() || IsLeafOf3DContext());
|
|
|
|
/* Some transforms can get empty bounds in 2D, but might get transformed again
|
|
* and get non-empty bounds. A simple example of this would be a 180 degree
|
|
* rotation getting applied twice.
|
|
* We should not depend on transforming bounds level by level.
|
|
*
|
|
* This function collects the bounds of this transform and stores it in
|
|
* nsDisplayListBuilder. If this is not a leaf of a 3D context, we recurse
|
|
* down and include the bounds of the child transforms.
|
|
* The bounds are transformed with the accumulated transformation matrix up to
|
|
* the 3D context root coordinate space.
|
|
*/
|
|
nsDisplayListBuilder::AutoAccumulateTransform accTransform(aBuilder);
|
|
accTransform.Accumulate(GetTransform().GetMatrix());
|
|
|
|
// Do not dive into another 3D context.
|
|
if (!IsLeafOf3DContext()) {
|
|
for (nsDisplayItem* i : *GetChildren()) {
|
|
i->DoUpdateBoundsPreserves3D(aBuilder);
|
|
}
|
|
}
|
|
|
|
/* The child transforms that extend 3D context further will have empty bounds,
|
|
* so the untransformed bounds here is the bounds of all the non-preserve-3d
|
|
* content under this transform.
|
|
*/
|
|
const nsRect rect = TransformUntransformedBounds(
|
|
aBuilder, accTransform.GetCurrentTransform());
|
|
aBuilder->AccumulateRect(rect);
|
|
}
|
|
|
|
void nsDisplayTransform::DoUpdateBoundsPreserves3D(
|
|
nsDisplayListBuilder* aBuilder) {
|
|
MOZ_ASSERT(mFrame->Combines3DTransformWithAncestors() ||
|
|
IsTransformSeparator());
|
|
// Updating is not going through to child 3D context.
|
|
ComputeBounds(aBuilder);
|
|
}
|
|
|
|
void nsDisplayTransform::UpdateBounds(nsDisplayListBuilder* aBuilder) {
|
|
UpdateUntransformedBounds(aBuilder);
|
|
|
|
if (IsTransformSeparator()) {
|
|
MOZ_ASSERT(GetTransform().IsIdentity());
|
|
mBounds = mChildBounds;
|
|
return;
|
|
}
|
|
|
|
if (mFrame->Extend3DContext()) {
|
|
if (!Combines3DTransformWithAncestors()) {
|
|
// The transform establishes a 3D context. |UpdateBoundsFor3D()| will
|
|
// collect the bounds from the child transforms.
|
|
UpdateBoundsFor3D(aBuilder);
|
|
} else {
|
|
// With nested 3D transforms, the 2D bounds might not be useful.
|
|
mBounds = nsRect();
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
MOZ_ASSERT(!mFrame->Extend3DContext());
|
|
|
|
// We would like to avoid calculating 2D bounds here for nested 3D transforms,
|
|
// but mix-blend-mode relies on having bounds set. See bug 1556956.
|
|
|
|
// A stand-alone transform.
|
|
mBounds = TransformUntransformedBounds(aBuilder, GetTransform());
|
|
}
|
|
|
|
void nsDisplayTransform::UpdateBoundsFor3D(nsDisplayListBuilder* aBuilder) {
|
|
MOZ_ASSERT(mFrame->Extend3DContext() &&
|
|
!mFrame->Combines3DTransformWithAncestors() &&
|
|
!IsTransformSeparator());
|
|
|
|
// Always start updating from an establisher of a 3D rendering context.
|
|
nsDisplayListBuilder::AutoAccumulateRect accRect(aBuilder);
|
|
nsDisplayListBuilder::AutoAccumulateTransform accTransform(aBuilder);
|
|
accTransform.StartRoot();
|
|
ComputeBounds(aBuilder);
|
|
mBounds = aBuilder->GetAccumulatedRect();
|
|
}
|
|
|
|
void nsDisplayTransform::UpdateUntransformedBounds(
|
|
nsDisplayListBuilder* aBuilder) {
|
|
mChildBounds = GetChildren()->GetClippedBoundsWithRespectToASR(
|
|
aBuilder, mActiveScrolledRoot);
|
|
}
|
|
|
|
#ifdef DEBUG_HIT
|
|
# include <time.h>
|
|
#endif
|
|
|
|
/* HitTest does some fun stuff with matrix transforms to obtain the answer. */
|
|
void nsDisplayTransform::HitTest(nsDisplayListBuilder* aBuilder,
|
|
const nsRect& aRect, HitTestState* aState,
|
|
nsTArray<nsIFrame*>* aOutFrames) {
|
|
if (aState->mInPreserves3D) {
|
|
GetChildren()->HitTest(aBuilder, aRect, aState, aOutFrames);
|
|
return;
|
|
}
|
|
|
|
/* Here's how this works:
|
|
* 1. Get the matrix. If it's singular, abort (clearly we didn't hit
|
|
* anything).
|
|
* 2. Invert the matrix.
|
|
* 3. Use it to transform the rect into the correct space.
|
|
* 4. Pass that rect down through to the list's version of HitTest.
|
|
*/
|
|
// GetTransform always operates in dev pixels.
|
|
float factor = mFrame->PresContext()->AppUnitsPerDevPixel();
|
|
Matrix4x4 matrix = GetAccumulatedPreserved3DTransform(aBuilder);
|
|
|
|
if (!IsFrameVisible(mFrame, matrix)) {
|
|
return;
|
|
}
|
|
|
|
const bool oldHitOccludingItem = aState->mHitOccludingItem;
|
|
|
|
/* We want to go from transformed-space to regular space.
|
|
* Thus we have to invert the matrix, which normally does
|
|
* the reverse operation (e.g. regular->transformed)
|
|
*/
|
|
|
|
/* Now, apply the transform and pass it down the channel. */
|
|
matrix.Invert();
|
|
nsRect resultingRect;
|
|
// Magic width/height indicating we're hit testing a point, not a rect
|
|
const bool testingPoint = aRect.width == 1 && aRect.height == 1;
|
|
if (testingPoint) {
|
|
Point4D point =
|
|
matrix.ProjectPoint(Point(NSAppUnitsToFloatPixels(aRect.x, factor),
|
|
NSAppUnitsToFloatPixels(aRect.y, factor)));
|
|
if (!point.HasPositiveWCoord()) {
|
|
return;
|
|
}
|
|
|
|
Point point2d = point.As2DPoint();
|
|
|
|
resultingRect =
|
|
nsRect(NSFloatPixelsToAppUnits(float(point2d.x), factor),
|
|
NSFloatPixelsToAppUnits(float(point2d.y), factor), 1, 1);
|
|
|
|
} else {
|
|
Rect originalRect(NSAppUnitsToFloatPixels(aRect.x, factor),
|
|
NSAppUnitsToFloatPixels(aRect.y, factor),
|
|
NSAppUnitsToFloatPixels(aRect.width, factor),
|
|
NSAppUnitsToFloatPixels(aRect.height, factor));
|
|
|
|
Rect childGfxBounds(NSAppUnitsToFloatPixels(mChildBounds.x, factor),
|
|
NSAppUnitsToFloatPixels(mChildBounds.y, factor),
|
|
NSAppUnitsToFloatPixels(mChildBounds.width, factor),
|
|
NSAppUnitsToFloatPixels(mChildBounds.height, factor));
|
|
|
|
Rect rect = matrix.ProjectRectBounds(originalRect, childGfxBounds);
|
|
|
|
resultingRect =
|
|
nsRect(NSFloatPixelsToAppUnits(float(rect.X()), factor),
|
|
NSFloatPixelsToAppUnits(float(rect.Y()), factor),
|
|
NSFloatPixelsToAppUnits(float(rect.Width()), factor),
|
|
NSFloatPixelsToAppUnits(float(rect.Height()), factor));
|
|
}
|
|
|
|
if (resultingRect.IsEmpty()) {
|
|
return;
|
|
}
|
|
|
|
#ifdef DEBUG_HIT
|
|
printf("Frame: %p\n", dynamic_cast<void*>(mFrame));
|
|
printf(" Untransformed point: (%f, %f)\n", resultingRect.X(),
|
|
resultingRect.Y());
|
|
uint32_t originalFrameCount = aOutFrames.Length();
|
|
#endif
|
|
|
|
GetChildren()->HitTest(aBuilder, resultingRect, aState, aOutFrames);
|
|
|
|
if (aState->mHitOccludingItem && !testingPoint &&
|
|
!mChildBounds.Contains(aRect)) {
|
|
MOZ_ASSERT(aBuilder->HitTestIsForVisibility());
|
|
// We're hit-testing a rect that's bigger than our child bounds, but
|
|
// resultingRect is clipped by our bounds (in ProjectRectBounds above), so
|
|
// we can't stop hit-testing altogether.
|
|
//
|
|
// FIXME(emilio): I think this means that theoretically we might include
|
|
// some frames fully behind other transformed-but-opaque frames? Then again
|
|
// that's our pre-existing behavior for other untransformed content that
|
|
// doesn't fill the whole rect. To be fully correct I think we'd need proper
|
|
// "known occluded region" tracking, but that might be overkill for our
|
|
// purposes here.
|
|
aState->mHitOccludingItem = oldHitOccludingItem;
|
|
}
|
|
|
|
#ifdef DEBUG_HIT
|
|
if (originalFrameCount != aOutFrames.Length())
|
|
printf(" Hit! Time: %f, first frame: %p\n", static_cast<double>(clock()),
|
|
dynamic_cast<void*>(aOutFrames.ElementAt(0)));
|
|
printf("=== end of hit test ===\n");
|
|
#endif
|
|
}
|
|
|
|
float nsDisplayTransform::GetHitDepthAtPoint(nsDisplayListBuilder* aBuilder,
|
|
const nsPoint& aPoint) {
|
|
// GetTransform always operates in dev pixels.
|
|
float factor = mFrame->PresContext()->AppUnitsPerDevPixel();
|
|
Matrix4x4 matrix = GetAccumulatedPreserved3DTransform(aBuilder);
|
|
|
|
NS_ASSERTION(IsFrameVisible(mFrame, matrix),
|
|
"We can't have hit a frame that isn't visible!");
|
|
|
|
Matrix4x4 inverse = matrix;
|
|
inverse.Invert();
|
|
Point4D point =
|
|
inverse.ProjectPoint(Point(NSAppUnitsToFloatPixels(aPoint.x, factor),
|
|
NSAppUnitsToFloatPixels(aPoint.y, factor)));
|
|
|
|
Point point2d = point.As2DPoint();
|
|
|
|
Point3D transformed = matrix.TransformPoint(Point3D(point2d.x, point2d.y, 0));
|
|
return transformed.z;
|
|
}
|
|
|
|
/* The transform is opaque iff the transform consists solely of scales and
|
|
* translations and if the underlying content is opaque. Thus if the transform
|
|
* is of the form
|
|
*
|
|
* |a c e|
|
|
* |b d f|
|
|
* |0 0 1|
|
|
*
|
|
* We need b and c to be zero.
|
|
*
|
|
* We also need to check whether the underlying opaque content completely fills
|
|
* our visible rect. We use UntransformRect which expands to the axis-aligned
|
|
* bounding rect, but that's OK since if
|
|
* mStoredList.GetVisibleRect().Contains(untransformedVisible), then it
|
|
* certainly contains the actual (non-axis-aligned) untransformed rect.
|
|
*/
|
|
nsRegion nsDisplayTransform::GetOpaqueRegion(nsDisplayListBuilder* aBuilder,
|
|
bool* aSnap) const {
|
|
*aSnap = false;
|
|
|
|
nsRect untransformedVisible;
|
|
if (!UntransformBuildingRect(aBuilder, &untransformedVisible)) {
|
|
return nsRegion();
|
|
}
|
|
|
|
const Matrix4x4Flagged& matrix = GetTransform();
|
|
Matrix matrix2d;
|
|
if (!matrix.Is2D(&matrix2d) || !matrix2d.PreservesAxisAlignedRectangles()) {
|
|
return nsRegion();
|
|
}
|
|
|
|
nsRegion result;
|
|
|
|
bool tmpSnap;
|
|
const nsRect bounds = GetUntransformedBounds(aBuilder, &tmpSnap);
|
|
const nsRegion opaque =
|
|
::mozilla::GetOpaqueRegion(aBuilder, GetChildren(), bounds);
|
|
|
|
if (opaque.Contains(untransformedVisible)) {
|
|
result = GetBuildingRect().Intersect(GetBounds(aBuilder, &tmpSnap));
|
|
}
|
|
return result;
|
|
}
|
|
|
|
nsRect nsDisplayTransform::GetComponentAlphaBounds(
|
|
nsDisplayListBuilder* aBuilder) const {
|
|
if (GetChildren()->GetComponentAlphaBounds(aBuilder).IsEmpty()) {
|
|
return nsRect();
|
|
}
|
|
|
|
bool snap;
|
|
return GetBounds(aBuilder, &snap);
|
|
}
|
|
|
|
/* TransformRect takes in as parameters a rectangle (in app space) and returns
|
|
* the smallest rectangle (in app space) containing the transformed image of
|
|
* that rectangle. That is, it takes the four corners of the rectangle,
|
|
* transforms them according to the matrix associated with the specified frame,
|
|
* then returns the smallest rectangle containing the four transformed points.
|
|
*
|
|
* @param aUntransformedBounds The rectangle (in app units) to transform.
|
|
* @param aFrame The frame whose transformation should be applied.
|
|
* @param aOrigin The delta from the frame origin to the coordinate space origin
|
|
* @return The smallest rectangle containing the image of the transformed
|
|
* rectangle.
|
|
*/
|
|
nsRect nsDisplayTransform::TransformRect(const nsRect& aUntransformedBounds,
|
|
const nsIFrame* aFrame,
|
|
TransformReferenceBox& aRefBox) {
|
|
MOZ_ASSERT(aFrame, "Can't take the transform based on a null frame!");
|
|
|
|
float factor = aFrame->PresContext()->AppUnitsPerDevPixel();
|
|
|
|
FrameTransformProperties props(aFrame, aRefBox, factor);
|
|
return nsLayoutUtils::MatrixTransformRect(
|
|
aUntransformedBounds,
|
|
GetResultingTransformMatrixInternal(props, aRefBox, nsPoint(), factor,
|
|
kTransformRectFlags),
|
|
factor);
|
|
}
|
|
|
|
bool nsDisplayTransform::UntransformRect(const nsRect& aTransformedBounds,
|
|
const nsRect& aChildBounds,
|
|
const nsIFrame* aFrame,
|
|
nsRect* aOutRect) {
|
|
MOZ_ASSERT(aFrame, "Can't take the transform based on a null frame!");
|
|
|
|
float factor = aFrame->PresContext()->AppUnitsPerDevPixel();
|
|
Matrix4x4 transform = GetResultingTransformMatrix(aFrame, nsPoint(), factor,
|
|
kTransformRectFlags);
|
|
return UntransformRect(aTransformedBounds, aChildBounds, transform, factor,
|
|
aOutRect);
|
|
}
|
|
|
|
bool nsDisplayTransform::UntransformRect(const nsRect& aTransformedBounds,
|
|
const nsRect& aChildBounds,
|
|
const Matrix4x4& aMatrix,
|
|
float aAppUnitsPerPixel,
|
|
nsRect* aOutRect) {
|
|
if (aMatrix.IsSingular()) {
|
|
return false;
|
|
}
|
|
|
|
RectDouble result(
|
|
NSAppUnitsToFloatPixels(aTransformedBounds.x, aAppUnitsPerPixel),
|
|
NSAppUnitsToFloatPixels(aTransformedBounds.y, aAppUnitsPerPixel),
|
|
NSAppUnitsToFloatPixels(aTransformedBounds.width, aAppUnitsPerPixel),
|
|
NSAppUnitsToFloatPixels(aTransformedBounds.height, aAppUnitsPerPixel));
|
|
|
|
RectDouble childGfxBounds(
|
|
NSAppUnitsToFloatPixels(aChildBounds.x, aAppUnitsPerPixel),
|
|
NSAppUnitsToFloatPixels(aChildBounds.y, aAppUnitsPerPixel),
|
|
NSAppUnitsToFloatPixels(aChildBounds.width, aAppUnitsPerPixel),
|
|
NSAppUnitsToFloatPixels(aChildBounds.height, aAppUnitsPerPixel));
|
|
|
|
result = aMatrix.Inverse().ProjectRectBounds(result, childGfxBounds);
|
|
*aOutRect = nsLayoutUtils::RoundGfxRectToAppRect(ThebesRect(result),
|
|
aAppUnitsPerPixel);
|
|
return true;
|
|
}
|
|
|
|
bool nsDisplayTransform::UntransformRect(nsDisplayListBuilder* aBuilder,
|
|
const nsRect& aRect,
|
|
nsRect* aOutRect) const {
|
|
if (GetTransform().IsSingular()) {
|
|
return false;
|
|
}
|
|
|
|
// GetTransform always operates in dev pixels.
|
|
float factor = mFrame->PresContext()->AppUnitsPerDevPixel();
|
|
RectDouble result(NSAppUnitsToFloatPixels(aRect.x, factor),
|
|
NSAppUnitsToFloatPixels(aRect.y, factor),
|
|
NSAppUnitsToFloatPixels(aRect.width, factor),
|
|
NSAppUnitsToFloatPixels(aRect.height, factor));
|
|
|
|
bool snap;
|
|
nsRect childBounds = GetUntransformedBounds(aBuilder, &snap);
|
|
RectDouble childGfxBounds(
|
|
NSAppUnitsToFloatPixels(childBounds.x, factor),
|
|
NSAppUnitsToFloatPixels(childBounds.y, factor),
|
|
NSAppUnitsToFloatPixels(childBounds.width, factor),
|
|
NSAppUnitsToFloatPixels(childBounds.height, factor));
|
|
|
|
/* We want to untransform the matrix, so invert the transformation first! */
|
|
result = GetInverseTransform().ProjectRectBounds(result, childGfxBounds);
|
|
|
|
*aOutRect = nsLayoutUtils::RoundGfxRectToAppRect(ThebesRect(result), factor);
|
|
|
|
return true;
|
|
}
|
|
|
|
void nsDisplayTransform::WriteDebugInfo(std::stringstream& aStream) {
|
|
aStream << GetTransform().GetMatrix();
|
|
if (IsTransformSeparator()) {
|
|
aStream << " transform-separator";
|
|
}
|
|
if (IsLeafOf3DContext()) {
|
|
aStream << " 3d-context-leaf";
|
|
}
|
|
if (mFrame->Extend3DContext()) {
|
|
aStream << " extends-3d-context";
|
|
}
|
|
if (mFrame->Combines3DTransformWithAncestors()) {
|
|
aStream << " combines-3d-with-ancestors";
|
|
}
|
|
|
|
aStream << " prerender(";
|
|
switch (mPrerenderDecision) {
|
|
case PrerenderDecision::No:
|
|
aStream << "no";
|
|
break;
|
|
case PrerenderDecision::Partial:
|
|
aStream << "partial";
|
|
break;
|
|
case PrerenderDecision::Full:
|
|
aStream << "full";
|
|
break;
|
|
}
|
|
aStream << ")";
|
|
aStream << " childrenBuildingRect" << mChildrenBuildingRect;
|
|
}
|
|
|
|
nsDisplayPerspective::nsDisplayPerspective(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame,
|
|
nsDisplayList* aList)
|
|
: nsPaintedDisplayItem(aBuilder, aFrame), mList(aBuilder) {
|
|
mList.AppendToTop(aList);
|
|
MOZ_ASSERT(mList.Length() == 1);
|
|
MOZ_ASSERT(mList.GetTop()->GetType() == DisplayItemType::TYPE_TRANSFORM);
|
|
}
|
|
|
|
void nsDisplayPerspective::Paint(nsDisplayListBuilder* aBuilder,
|
|
gfxContext* aCtx) {
|
|
// Just directly recurse into children, since we'll include the persepctive
|
|
// value in any nsDisplayTransform children.
|
|
GetChildren()->Paint(aBuilder, aCtx,
|
|
mFrame->PresContext()->AppUnitsPerDevPixel());
|
|
}
|
|
|
|
nsRegion nsDisplayPerspective::GetOpaqueRegion(nsDisplayListBuilder* aBuilder,
|
|
bool* aSnap) const {
|
|
if (!GetChildren()->GetTop()) {
|
|
*aSnap = false;
|
|
return nsRegion();
|
|
}
|
|
|
|
return GetChildren()->GetTop()->GetOpaqueRegion(aBuilder, aSnap);
|
|
}
|
|
|
|
bool nsDisplayPerspective::CreateWebRenderCommands(
|
|
wr::DisplayListBuilder& aBuilder, wr::IpcResourceUpdateQueue& aResources,
|
|
const StackingContextHelper& aSc, RenderRootStateManager* aManager,
|
|
nsDisplayListBuilder* aDisplayListBuilder) {
|
|
float appUnitsPerPixel = mFrame->PresContext()->AppUnitsPerDevPixel();
|
|
Matrix4x4 perspectiveMatrix;
|
|
DebugOnly<bool> hasPerspective = nsDisplayTransform::ComputePerspectiveMatrix(
|
|
mFrame, appUnitsPerPixel, perspectiveMatrix);
|
|
MOZ_ASSERT(hasPerspective, "Why did we create nsDisplayPerspective?");
|
|
|
|
/*
|
|
* ClipListToRange can remove our child after we were created.
|
|
*/
|
|
if (!GetChildren()->GetTop()) {
|
|
return false;
|
|
}
|
|
|
|
/*
|
|
* The resulting matrix is still in the coordinate space of the transformed
|
|
* frame. Append a translation to the reference frame coordinates.
|
|
*/
|
|
nsDisplayTransform* transform =
|
|
static_cast<nsDisplayTransform*>(GetChildren()->GetTop());
|
|
|
|
Point3D newOrigin =
|
|
Point3D(NSAppUnitsToFloatPixels(transform->ToReferenceFrame().x,
|
|
appUnitsPerPixel),
|
|
NSAppUnitsToFloatPixels(transform->ToReferenceFrame().y,
|
|
appUnitsPerPixel),
|
|
0.0f);
|
|
Point3D roundedOrigin(NS_round(newOrigin.x), NS_round(newOrigin.y), 0);
|
|
|
|
perspectiveMatrix.PostTranslate(roundedOrigin);
|
|
|
|
nsIFrame* perspectiveFrame =
|
|
mFrame->GetClosestFlattenedTreeAncestorPrimaryFrame();
|
|
|
|
// Passing true here is always correct, since perspective always combines
|
|
// transforms with the descendants. However that'd make WR do a lot of work
|
|
// that it doesn't really need to do if there aren't other transforms forming
|
|
// part of the 3D context.
|
|
//
|
|
// WR knows how to treat perspective in that case, so the only thing we need
|
|
// to do is to ensure we pass true when we're involved in a 3d context in any
|
|
// other way via the transform-style property on either the transformed frame
|
|
// or the perspective frame in order to not confuse WR's preserve-3d code in
|
|
// very awful ways.
|
|
bool preserve3D =
|
|
mFrame->Extend3DContext() || perspectiveFrame->Extend3DContext();
|
|
|
|
wr::StackingContextParams params;
|
|
|
|
wr::WrTransformInfo transform_info;
|
|
transform_info.transform = wr::ToLayoutTransform(perspectiveMatrix);
|
|
transform_info.key = wr::SpatialKey(uint64_t(mFrame), GetPerFrameKey(),
|
|
wr::SpatialKeyKind::Perspective);
|
|
params.mTransformPtr = &transform_info;
|
|
|
|
params.reference_frame_kind = wr::WrReferenceFrameKind::Perspective;
|
|
params.prim_flags = !BackfaceIsHidden()
|
|
? wr::PrimitiveFlags::IS_BACKFACE_VISIBLE
|
|
: wr::PrimitiveFlags{0};
|
|
params.SetPreserve3D(preserve3D);
|
|
params.clip =
|
|
wr::WrStackingContextClip::ClipChain(aBuilder.CurrentClipChainId());
|
|
|
|
Maybe<uint64_t> scrollingRelativeTo;
|
|
for (const auto* asr = GetActiveScrolledRoot(); asr; asr = asr->mParent) {
|
|
// In OOP documents, the root scrollable frame of the in-process root
|
|
// document is always active, so using IsAncestorFrameCrossDocInProcess
|
|
// should be fine here.
|
|
if (nsLayoutUtils::IsAncestorFrameCrossDocInProcess(
|
|
asr->mScrollContainerFrame->GetScrolledFrame(), perspectiveFrame)) {
|
|
scrollingRelativeTo.emplace(asr->GetViewId());
|
|
break;
|
|
}
|
|
}
|
|
|
|
// We put the perspective reference frame wrapping the transformed frame,
|
|
// even though there may be arbitrarily nested scroll frames in between.
|
|
//
|
|
// We need to know how many ancestor scroll-frames are we nested in, in order
|
|
// for the async scrolling code in WebRender to calculate the right
|
|
// transformation for the perspective contents.
|
|
params.scrolling_relative_to = scrollingRelativeTo.ptrOr(nullptr);
|
|
|
|
StackingContextHelper sc(aSc, GetActiveScrolledRoot(), mFrame, this, aBuilder,
|
|
params);
|
|
|
|
aManager->CommandBuilder().CreateWebRenderCommandsFromDisplayList(
|
|
GetChildren(), this, aDisplayListBuilder, sc, aBuilder, aResources);
|
|
|
|
return true;
|
|
}
|
|
|
|
nsDisplayText::nsDisplayText(nsDisplayListBuilder* aBuilder,
|
|
nsTextFrame* aFrame)
|
|
: nsPaintedDisplayItem(aBuilder, aFrame),
|
|
mVisIStartEdge(0),
|
|
mVisIEndEdge(0) {
|
|
MOZ_COUNT_CTOR(nsDisplayText);
|
|
mBounds = mFrame->InkOverflowRectRelativeToSelf() + ToReferenceFrame();
|
|
// Bug 748228
|
|
mBounds.Inflate(mFrame->PresContext()->AppUnitsPerDevPixel());
|
|
mVisibleRect = aBuilder->GetVisibleRect() +
|
|
aBuilder->GetCurrentFrameOffsetToReferenceFrame();
|
|
}
|
|
|
|
bool nsDisplayText::CanApplyOpacity(WebRenderLayerManager* aManager,
|
|
nsDisplayListBuilder* aBuilder) const {
|
|
auto* f = static_cast<nsTextFrame*>(mFrame);
|
|
|
|
if (f->IsSelected()) {
|
|
return false;
|
|
}
|
|
|
|
const nsStyleText* textStyle = f->StyleText();
|
|
if (textStyle->HasTextShadow()) {
|
|
return false;
|
|
}
|
|
|
|
nsTextFrame::TextDecorations decorations;
|
|
f->GetTextDecorations(f->PresContext(), nsTextFrame::eResolvedColors,
|
|
decorations);
|
|
return !decorations.HasDecorationLines();
|
|
}
|
|
|
|
void nsDisplayText::Paint(nsDisplayListBuilder* aBuilder, gfxContext* aCtx) {
|
|
AUTO_PROFILER_LABEL("nsDisplayText::Paint", GRAPHICS);
|
|
// We don't pass mVisibleRect here, since this can be called from within
|
|
// the WebRender fallback painting path, and we don't want to issue
|
|
// recorded commands that are dependent on the visible/building rect.
|
|
RenderToContext(aCtx, aBuilder, GetPaintRect(aBuilder, aCtx));
|
|
|
|
auto* textFrame = static_cast<nsTextFrame*>(mFrame);
|
|
LCPTextFrameHelper::MaybeUnionTextFrame(textFrame,
|
|
mBounds - ToReferenceFrame());
|
|
}
|
|
|
|
bool nsDisplayText::CreateWebRenderCommands(
|
|
wr::DisplayListBuilder& aBuilder, wr::IpcResourceUpdateQueue& aResources,
|
|
const StackingContextHelper& aSc, RenderRootStateManager* aManager,
|
|
nsDisplayListBuilder* aDisplayListBuilder) {
|
|
auto* f = static_cast<nsTextFrame*>(mFrame);
|
|
auto appUnitsPerDevPixel = f->PresContext()->AppUnitsPerDevPixel();
|
|
|
|
nsRect bounds = f->WebRenderBounds() + ToReferenceFrame();
|
|
// Bug 748228
|
|
bounds.Inflate(appUnitsPerDevPixel);
|
|
|
|
if (bounds.IsEmpty()) {
|
|
return true;
|
|
}
|
|
|
|
// For large font sizes, punt to a blob image, to avoid the blurry rendering
|
|
// that results from WR clamping the glyph size used for rasterization.
|
|
//
|
|
// (See FONT_SIZE_LIMIT in webrender/src/glyph_rasterizer/mod.rs.)
|
|
//
|
|
// This is not strictly accurate, as final used font sizes might not be the
|
|
// same as claimed by the fontGroup's style.size (eg: due to font-size-adjust
|
|
// altering the used size of the font actually used).
|
|
// It also fails to consider how transforms might affect the device-font-size
|
|
// that webrender uses (and clamps).
|
|
// But it should be near enough for practical purposes; the limitations just
|
|
// mean we might sometimes end up with webrender still applying some bitmap
|
|
// scaling, or bail out when we didn't really need to.
|
|
constexpr float kWebRenderFontSizeLimit = 320.0;
|
|
f->EnsureTextRun(nsTextFrame::eInflated);
|
|
gfxTextRun* textRun = f->GetTextRun(nsTextFrame::eInflated);
|
|
if (textRun &&
|
|
textRun->GetFontGroup()->GetStyle()->size > kWebRenderFontSizeLimit) {
|
|
return false;
|
|
}
|
|
|
|
gfx::Point deviceOffset =
|
|
LayoutDevicePoint::FromAppUnits(bounds.TopLeft(), appUnitsPerDevPixel)
|
|
.ToUnknownPoint();
|
|
|
|
// Clipping the bounds to the PaintRect (factoring in what's covered by parent
|
|
// frames) lets us early reject a bunch of things.
|
|
nsRect visible = mVisibleRect;
|
|
|
|
// Add the "source rect" area from which the given shadows could intersect
|
|
// with mVisibleRect, and which therefore needs to included in the paint
|
|
// operation, to the `visible` rect that we will use to limit the bounds of
|
|
// what we send to the renderer.
|
|
auto addShadowSourceToVisible = [&](Span<const StyleSimpleShadow> aShadows) {
|
|
for (const auto& shadow : aShadows) {
|
|
nsRect sourceRect = mVisibleRect;
|
|
// Negate the offsets, because we're looking for the "source" rect that
|
|
// could cast a shadow into the visible rect, rather than a "target" area
|
|
// onto which the visible rect would cast a shadow.
|
|
sourceRect.MoveBy(-shadow.horizontal.ToAppUnits(),
|
|
-shadow.vertical.ToAppUnits());
|
|
// Inflate to account for the shadow blur.
|
|
sourceRect.Inflate(nsContextBoxBlur::GetBlurRadiusMargin(
|
|
shadow.blur.ToAppUnits(), appUnitsPerDevPixel));
|
|
visible.OrWith(sourceRect);
|
|
}
|
|
};
|
|
|
|
// Shadows can translate things back into view, so we enlarge the notional
|
|
// "visible" rect to ensure we don't skip painting relevant parts that might
|
|
// cast a shadow within the visible area.
|
|
addShadowSourceToVisible(f->StyleText()->mTextShadow.AsSpan());
|
|
|
|
// Similarly for shadows that may be cast by ::selection.
|
|
if (f->IsSelected()) {
|
|
nsTextPaintStyle textPaint(f);
|
|
Span<const StyleSimpleShadow> shadows;
|
|
f->GetSelectionTextShadow(SelectionType::eNormal, textPaint, &shadows);
|
|
addShadowSourceToVisible(shadows);
|
|
}
|
|
|
|
// Inflate a little extra to allow for potential antialiasing "blur".
|
|
visible.Inflate(3 * appUnitsPerDevPixel);
|
|
bounds = bounds.Intersect(visible);
|
|
|
|
gfxContext* textDrawer = aBuilder.GetTextContext(aResources, aSc, aManager,
|
|
this, bounds, deviceOffset);
|
|
|
|
LCPTextFrameHelper::MaybeUnionTextFrame(f, bounds - ToReferenceFrame());
|
|
|
|
aBuilder.StartGroup(this);
|
|
|
|
RenderToContext(textDrawer, aDisplayListBuilder, mVisibleRect,
|
|
aBuilder.GetInheritedOpacity(), true);
|
|
const bool result = textDrawer->GetTextDrawer()->Finish();
|
|
|
|
if (result) {
|
|
aBuilder.FinishGroup();
|
|
} else {
|
|
aBuilder.CancelGroup(true);
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
void nsDisplayText::RenderToContext(gfxContext* aCtx,
|
|
nsDisplayListBuilder* aBuilder,
|
|
const nsRect& aVisibleRect, float aOpacity,
|
|
bool aIsRecording) {
|
|
nsTextFrame* f = static_cast<nsTextFrame*>(mFrame);
|
|
|
|
// Add 1 pixel of dirty area around mVisibleRect to allow us to paint
|
|
// antialiased pixels beyond the measured text extents.
|
|
// This is temporary until we do this in the actual calculation of text
|
|
// extents.
|
|
auto A2D = mFrame->PresContext()->AppUnitsPerDevPixel();
|
|
LayoutDeviceRect extraVisible =
|
|
LayoutDeviceRect::FromAppUnits(aVisibleRect, A2D);
|
|
extraVisible.Inflate(1);
|
|
|
|
gfxRect pixelVisible(extraVisible.x, extraVisible.y, extraVisible.width,
|
|
extraVisible.height);
|
|
pixelVisible.Inflate(2);
|
|
pixelVisible.RoundOut();
|
|
|
|
gfxClipAutoSaveRestore autoSaveClip(aCtx);
|
|
if (!aBuilder->IsForGenerateGlyphMask() && !aIsRecording) {
|
|
autoSaveClip.Clip(pixelVisible);
|
|
}
|
|
|
|
NS_ASSERTION(mVisIStartEdge >= 0, "illegal start edge");
|
|
NS_ASSERTION(mVisIEndEdge >= 0, "illegal end edge");
|
|
|
|
gfxContextMatrixAutoSaveRestore matrixSR;
|
|
|
|
nsPoint framePt = ToReferenceFrame();
|
|
if (f->Style()->IsTextCombined()) {
|
|
float scaleFactor = nsTextFrame::GetTextCombineScaleFactor(f);
|
|
if (scaleFactor != 1.0f) {
|
|
if (auto* textDrawer = aCtx->GetTextDrawer()) {
|
|
// WebRender doesn't support scaling text like this yet
|
|
textDrawer->FoundUnsupportedFeature();
|
|
return;
|
|
}
|
|
matrixSR.SetContext(aCtx);
|
|
// Setup matrix to compress text for text-combine-upright if
|
|
// necessary. This is done here because we want selection be
|
|
// compressed at the same time as text.
|
|
gfxPoint pt = nsLayoutUtils::PointToGfxPoint(framePt, A2D);
|
|
gfxTextRun* textRun = f->GetTextRun(nsTextFrame::eInflated);
|
|
if (textRun && textRun->IsRightToLeft()) {
|
|
pt.x += gfxFloat(f->GetSize().width) / A2D;
|
|
}
|
|
gfxMatrix mat = aCtx->CurrentMatrixDouble()
|
|
.PreTranslate(pt)
|
|
.PreScale(scaleFactor, 1.0)
|
|
.PreTranslate(-pt);
|
|
aCtx->SetMatrixDouble(mat);
|
|
}
|
|
}
|
|
nsTextFrame::PaintTextParams params(aCtx);
|
|
params.framePt = gfx::Point(framePt.x, framePt.y);
|
|
params.dirtyRect = extraVisible;
|
|
|
|
if (aBuilder->IsForGenerateGlyphMask()) {
|
|
params.state = nsTextFrame::PaintTextParams::GenerateTextMask;
|
|
} else {
|
|
params.state = nsTextFrame::PaintTextParams::PaintText;
|
|
}
|
|
|
|
f->PaintText(params, mVisIStartEdge, mVisIEndEdge, ToReferenceFrame(),
|
|
f->IsSelected(), aOpacity);
|
|
}
|
|
|
|
// This could go to nsDisplayListInvalidation.h, but
|
|
// |nsTextFrame::TextDecorations| requires including of nsTextFrame.h which
|
|
// would produce circular dependencies.
|
|
class nsDisplayTextGeometry : public nsDisplayItemGenericGeometry {
|
|
public:
|
|
nsDisplayTextGeometry(nsDisplayText* aItem, nsDisplayListBuilder* aBuilder)
|
|
: nsDisplayItemGenericGeometry(aItem, aBuilder),
|
|
mVisIStartEdge(aItem->VisIStartEdge()),
|
|
mVisIEndEdge(aItem->VisIEndEdge()) {
|
|
nsTextFrame* f = static_cast<nsTextFrame*>(aItem->Frame());
|
|
f->GetTextDecorations(f->PresContext(), nsTextFrame::eResolvedColors,
|
|
mDecorations);
|
|
}
|
|
|
|
/**
|
|
* We store the computed text decorations here since they are
|
|
* computed using style data from parent frames. Any changes to these
|
|
* styles will only invalidate the parent frame and not this frame.
|
|
*/
|
|
nsTextFrame::TextDecorations mDecorations;
|
|
nscoord mVisIStartEdge;
|
|
nscoord mVisIEndEdge;
|
|
};
|
|
|
|
nsDisplayItemGeometry* nsDisplayText::AllocateGeometry(
|
|
nsDisplayListBuilder* aBuilder) {
|
|
return new nsDisplayTextGeometry(this, aBuilder);
|
|
}
|
|
|
|
void nsDisplayText::ComputeInvalidationRegion(
|
|
nsDisplayListBuilder* aBuilder, const nsDisplayItemGeometry* aGeometry,
|
|
nsRegion* aInvalidRegion) const {
|
|
const nsDisplayTextGeometry* geometry =
|
|
static_cast<const nsDisplayTextGeometry*>(aGeometry);
|
|
nsTextFrame* f = static_cast<nsTextFrame*>(mFrame);
|
|
|
|
nsTextFrame::TextDecorations decorations;
|
|
f->GetTextDecorations(f->PresContext(), nsTextFrame::eResolvedColors,
|
|
decorations);
|
|
|
|
bool snap;
|
|
const nsRect& newRect = geometry->mBounds;
|
|
nsRect oldRect = GetBounds(aBuilder, &snap);
|
|
if (decorations != geometry->mDecorations ||
|
|
mVisIStartEdge != geometry->mVisIStartEdge ||
|
|
mVisIEndEdge != geometry->mVisIEndEdge ||
|
|
!oldRect.IsEqualInterior(newRect) ||
|
|
!geometry->mBorderRect.IsEqualInterior(GetBorderRect())) {
|
|
aInvalidRegion->Or(oldRect, newRect);
|
|
}
|
|
}
|
|
|
|
void nsDisplayText::WriteDebugInfo(std::stringstream& aStream) {
|
|
#ifdef DEBUG
|
|
aStream << " (\"";
|
|
|
|
nsTextFrame* f = static_cast<nsTextFrame*>(mFrame);
|
|
nsCString buf;
|
|
f->ToCString(buf);
|
|
|
|
aStream << buf.get() << "\")";
|
|
#endif
|
|
}
|
|
|
|
nsDisplayEffectsBase::nsDisplayEffectsBase(
|
|
nsDisplayListBuilder* aBuilder, nsIFrame* aFrame, nsDisplayList* aList,
|
|
const ActiveScrolledRoot* aActiveScrolledRoot, bool aClearClipChain)
|
|
: nsDisplayWrapList(aBuilder, aFrame, aList, aActiveScrolledRoot,
|
|
aClearClipChain) {
|
|
MOZ_COUNT_CTOR(nsDisplayEffectsBase);
|
|
}
|
|
|
|
nsDisplayEffectsBase::nsDisplayEffectsBase(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame,
|
|
nsDisplayList* aList)
|
|
: nsDisplayWrapList(aBuilder, aFrame, aList) {
|
|
MOZ_COUNT_CTOR(nsDisplayEffectsBase);
|
|
}
|
|
|
|
nsRegion nsDisplayEffectsBase::GetOpaqueRegion(nsDisplayListBuilder* aBuilder,
|
|
bool* aSnap) const {
|
|
*aSnap = false;
|
|
return nsRegion();
|
|
}
|
|
|
|
void nsDisplayEffectsBase::HitTest(nsDisplayListBuilder* aBuilder,
|
|
const nsRect& aRect, HitTestState* aState,
|
|
nsTArray<nsIFrame*>* aOutFrames) {
|
|
nsPoint rectCenter(aRect.x + aRect.width / 2, aRect.y + aRect.height / 2);
|
|
if (SVGIntegrationUtils::HitTestFrameForEffects(
|
|
mFrame, rectCenter - ToReferenceFrame())) {
|
|
mList.HitTest(aBuilder, aRect, aState, aOutFrames);
|
|
}
|
|
}
|
|
|
|
gfxRect nsDisplayEffectsBase::BBoxInUserSpace() const {
|
|
return SVGUtils::GetBBox(mFrame);
|
|
}
|
|
|
|
gfxPoint nsDisplayEffectsBase::UserSpaceOffset() const {
|
|
return SVGUtils::FrameSpaceInCSSPxToUserSpaceOffset(mFrame);
|
|
}
|
|
|
|
void nsDisplayEffectsBase::ComputeInvalidationRegion(
|
|
nsDisplayListBuilder* aBuilder, const nsDisplayItemGeometry* aGeometry,
|
|
nsRegion* aInvalidRegion) const {
|
|
const auto* geometry =
|
|
static_cast<const nsDisplaySVGEffectGeometry*>(aGeometry);
|
|
bool snap;
|
|
nsRect bounds = GetBounds(aBuilder, &snap);
|
|
if (geometry->mFrameOffsetToReferenceFrame != ToReferenceFrame() ||
|
|
geometry->mUserSpaceOffset != UserSpaceOffset() ||
|
|
!geometry->mBBox.IsEqualInterior(BBoxInUserSpace())) {
|
|
// Filter and mask output can depend on the location of the frame's user
|
|
// space and on the frame's BBox. We need to invalidate if either of these
|
|
// change relative to the reference frame.
|
|
// Invalidations from our inactive layer manager are not enough to catch
|
|
// some of these cases because filters can produce output even if there's
|
|
// nothing in the filter input.
|
|
aInvalidRegion->Or(bounds, geometry->mBounds);
|
|
}
|
|
}
|
|
|
|
bool nsDisplayEffectsBase::ValidateSVGFrame() {
|
|
if (mFrame->HasAnyStateBits(NS_FRAME_SVG_LAYOUT)) {
|
|
ISVGDisplayableFrame* svgFrame = do_QueryFrame(mFrame);
|
|
if (!svgFrame) {
|
|
return false;
|
|
}
|
|
if (auto* svgElement = SVGElement::FromNode(mFrame->GetContent())) {
|
|
// The SVG spec says only to draw filters if the element
|
|
// has valid dimensions.
|
|
return svgElement->HasValidDimensions();
|
|
}
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
using PaintFramesParams = SVGIntegrationUtils::PaintFramesParams;
|
|
|
|
static void ComputeMaskGeometry(PaintFramesParams& aParams) {
|
|
// Properties are added lazily and may have been removed by a restyle, so
|
|
// make sure all applicable ones are set again.
|
|
nsIFrame* firstFrame =
|
|
nsLayoutUtils::FirstContinuationOrIBSplitSibling(aParams.frame);
|
|
|
|
const nsStyleSVGReset* svgReset = firstFrame->StyleSVGReset();
|
|
|
|
nsTArray<SVGMaskFrame*> maskFrames;
|
|
// XXX check return value?
|
|
SVGObserverUtils::GetAndObserveMasks(firstFrame, &maskFrames);
|
|
|
|
if (maskFrames.Length() == 0) {
|
|
return;
|
|
}
|
|
|
|
gfxContext& ctx = aParams.ctx;
|
|
nsIFrame* frame = aParams.frame;
|
|
|
|
nsPoint offsetToUserSpace =
|
|
nsLayoutUtils::ComputeOffsetToUserSpace(aParams.builder, aParams.frame);
|
|
|
|
auto cssToDevScale = frame->PresContext()->CSSToDevPixelScale();
|
|
int32_t appUnitsPerDevPixel = frame->PresContext()->AppUnitsPerDevPixel();
|
|
|
|
gfxPoint devPixelOffsetToUserSpace =
|
|
nsLayoutUtils::PointToGfxPoint(offsetToUserSpace, appUnitsPerDevPixel);
|
|
|
|
gfxContextMatrixAutoSaveRestore matSR(&ctx);
|
|
ctx.SetMatrixDouble(
|
|
ctx.CurrentMatrixDouble().PreTranslate(devPixelOffsetToUserSpace));
|
|
|
|
// Convert boaderArea and dirtyRect to user space.
|
|
nsRect userSpaceBorderArea = aParams.borderArea - offsetToUserSpace;
|
|
nsRect userSpaceDirtyRect = aParams.dirtyRect - offsetToUserSpace;
|
|
|
|
// Union all mask layer rectangles in user space.
|
|
LayoutDeviceRect maskInUserSpace;
|
|
for (size_t i = 0; i < maskFrames.Length(); i++) {
|
|
SVGMaskFrame* maskFrame = maskFrames[i];
|
|
LayoutDeviceRect currentMaskSurfaceRect;
|
|
|
|
if (maskFrame) {
|
|
auto rect = maskFrame->GetMaskArea(aParams.frame);
|
|
currentMaskSurfaceRect =
|
|
CSSRect::FromUnknownRect(ToRect(rect)) * cssToDevScale;
|
|
} else {
|
|
nsCSSRendering::ImageLayerClipState clipState;
|
|
nsCSSRendering::GetImageLayerClip(
|
|
svgReset->mMask.mLayers[i], frame, *frame->StyleBorder(),
|
|
userSpaceBorderArea, userSpaceDirtyRect,
|
|
/* aWillPaintBorder = */ false, appUnitsPerDevPixel, &clipState);
|
|
currentMaskSurfaceRect = LayoutDeviceRect::FromUnknownRect(
|
|
ToRect(clipState.mDirtyRectInDevPx));
|
|
}
|
|
|
|
maskInUserSpace = maskInUserSpace.Union(currentMaskSurfaceRect);
|
|
}
|
|
|
|
if (!maskInUserSpace.IsEmpty()) {
|
|
aParams.maskRect = Some(maskInUserSpace);
|
|
} else {
|
|
aParams.maskRect = Nothing();
|
|
}
|
|
}
|
|
|
|
nsDisplayMasksAndClipPaths::nsDisplayMasksAndClipPaths(
|
|
nsDisplayListBuilder* aBuilder, nsIFrame* aFrame, nsDisplayList* aList,
|
|
const ActiveScrolledRoot* aActiveScrolledRoot, bool aWrapsBackdropFilter)
|
|
: nsDisplayEffectsBase(aBuilder, aFrame, aList, aActiveScrolledRoot, true),
|
|
mWrapsBackdropFilter(aWrapsBackdropFilter) {
|
|
MOZ_COUNT_CTOR(nsDisplayMasksAndClipPaths);
|
|
|
|
nsPresContext* presContext = mFrame->PresContext();
|
|
uint32_t flags =
|
|
aBuilder->GetBackgroundPaintFlags() | nsCSSRendering::PAINTBG_MASK_IMAGE;
|
|
const nsStyleSVGReset* svgReset = aFrame->StyleSVGReset();
|
|
NS_FOR_VISIBLE_IMAGE_LAYERS_BACK_TO_FRONT(i, svgReset->mMask) {
|
|
const auto& layer = svgReset->mMask.mLayers[i];
|
|
if (!layer.mImage.IsResolved()) {
|
|
continue;
|
|
}
|
|
const nsRect& borderArea = mFrame->GetRectRelativeToSelf();
|
|
// NOTE(emilio): We only care about the dest rect so we don't bother
|
|
// computing a clip.
|
|
bool isTransformedFixed = false;
|
|
nsBackgroundLayerState state = nsCSSRendering::PrepareImageLayer(
|
|
presContext, aFrame, flags, borderArea, borderArea, layer,
|
|
&isTransformedFixed);
|
|
mDestRects.AppendElement(state.mDestArea);
|
|
}
|
|
}
|
|
|
|
static bool CanMergeDisplayMaskFrame(nsIFrame* aFrame) {
|
|
// Do not merge items for box-decoration-break:clone elements,
|
|
// since each box should have its own mask in that case.
|
|
if (aFrame->StyleBorder()->mBoxDecorationBreak ==
|
|
StyleBoxDecorationBreak::Clone) {
|
|
return false;
|
|
}
|
|
|
|
// Do not merge if either frame has a mask. Continuation frames should apply
|
|
// the mask independently (just like nsDisplayBackgroundImage).
|
|
if (aFrame->StyleSVGReset()->HasMask()) {
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool nsDisplayMasksAndClipPaths::CanMerge(const nsDisplayItem* aItem) const {
|
|
// Items for the same content element should be merged into a single
|
|
// compositing group.
|
|
if (!HasDifferentFrame(aItem) || !HasSameTypeAndClip(aItem) ||
|
|
!HasSameContent(aItem)) {
|
|
return false;
|
|
}
|
|
|
|
return CanMergeDisplayMaskFrame(mFrame) &&
|
|
CanMergeDisplayMaskFrame(aItem->Frame());
|
|
}
|
|
|
|
bool nsDisplayMasksAndClipPaths::IsValidMask() {
|
|
if (!ValidateSVGFrame()) {
|
|
return false;
|
|
}
|
|
|
|
return SVGUtils::DetermineMaskUsage(mFrame, false).UsingMaskOrClipPath();
|
|
}
|
|
|
|
bool nsDisplayMasksAndClipPaths::PaintMask(nsDisplayListBuilder* aBuilder,
|
|
gfxContext* aMaskContext,
|
|
bool aHandleOpacity,
|
|
bool* aMaskPainted) {
|
|
MOZ_ASSERT(aMaskContext->GetDrawTarget()->GetFormat() == SurfaceFormat::A8);
|
|
|
|
imgDrawingParams imgParams(aBuilder->GetImageDecodeFlags());
|
|
nsRect borderArea = nsRect(ToReferenceFrame(), mFrame->GetSize());
|
|
PaintFramesParams params(*aMaskContext, mFrame, mBounds, borderArea, aBuilder,
|
|
aHandleOpacity, imgParams);
|
|
ComputeMaskGeometry(params);
|
|
bool maskIsComplete = false;
|
|
bool painted = SVGIntegrationUtils::PaintMask(params, maskIsComplete);
|
|
if (aMaskPainted) {
|
|
*aMaskPainted = painted;
|
|
}
|
|
|
|
return maskIsComplete &&
|
|
(imgParams.result == ImgDrawResult::SUCCESS ||
|
|
imgParams.result == ImgDrawResult::SUCCESS_NOT_COMPLETE ||
|
|
imgParams.result == ImgDrawResult::WRONG_SIZE);
|
|
}
|
|
|
|
void nsDisplayMasksAndClipPaths::ComputeInvalidationRegion(
|
|
nsDisplayListBuilder* aBuilder, const nsDisplayItemGeometry* aGeometry,
|
|
nsRegion* aInvalidRegion) const {
|
|
nsDisplayEffectsBase::ComputeInvalidationRegion(aBuilder, aGeometry,
|
|
aInvalidRegion);
|
|
|
|
const auto* geometry =
|
|
static_cast<const nsDisplayMasksAndClipPathsGeometry*>(aGeometry);
|
|
bool snap;
|
|
nsRect bounds = GetBounds(aBuilder, &snap);
|
|
|
|
if (mDestRects.Length() != geometry->mDestRects.Length()) {
|
|
aInvalidRegion->Or(bounds, geometry->mBounds);
|
|
} else {
|
|
for (size_t i = 0; i < mDestRects.Length(); i++) {
|
|
if (!mDestRects[i].IsEqualInterior(geometry->mDestRects[i])) {
|
|
aInvalidRegion->Or(bounds, geometry->mBounds);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void nsDisplayMasksAndClipPaths::PaintWithContentsPaintCallback(
|
|
nsDisplayListBuilder* aBuilder, gfxContext* aCtx,
|
|
const std::function<void()>& aPaintChildren) {
|
|
// Clip the drawing target by mVisibleRect, which contains the visible
|
|
// region of the target frame and its out-of-flow and inflow descendants.
|
|
Rect bounds = NSRectToRect(GetPaintRect(aBuilder, aCtx),
|
|
mFrame->PresContext()->AppUnitsPerDevPixel());
|
|
bounds.RoundOut();
|
|
gfxClipAutoSaveRestore autoSaveClip(aCtx);
|
|
autoSaveClip.Clip(bounds);
|
|
|
|
imgDrawingParams imgParams(aBuilder->GetImageDecodeFlags());
|
|
nsRect borderArea = nsRect(ToReferenceFrame(), mFrame->GetSize());
|
|
PaintFramesParams params(*aCtx, mFrame, GetPaintRect(aBuilder, aCtx),
|
|
borderArea, aBuilder, false, imgParams);
|
|
|
|
ComputeMaskGeometry(params);
|
|
|
|
SVGIntegrationUtils::PaintMaskAndClipPath(params, aPaintChildren);
|
|
}
|
|
|
|
void nsDisplayMasksAndClipPaths::Paint(nsDisplayListBuilder* aBuilder,
|
|
gfxContext* aCtx) {
|
|
if (!IsValidMask()) {
|
|
return;
|
|
}
|
|
PaintWithContentsPaintCallback(aBuilder, aCtx, [&] {
|
|
GetChildren()->Paint(aBuilder, aCtx,
|
|
mFrame->PresContext()->AppUnitsPerDevPixel());
|
|
});
|
|
}
|
|
|
|
static Maybe<wr::WrClipChainId> CreateSimpleClipRegion(
|
|
const nsDisplayMasksAndClipPaths& aDisplayItem,
|
|
wr::DisplayListBuilder& aBuilder) {
|
|
nsIFrame* frame = aDisplayItem.Frame();
|
|
const auto* style = frame->StyleSVGReset();
|
|
MOZ_ASSERT(style->HasClipPath() || style->HasMask());
|
|
if (!SVGUtils::DetermineMaskUsage(frame, false).IsSimpleClipShape()) {
|
|
return Nothing();
|
|
}
|
|
|
|
const auto& clipPath = style->mClipPath;
|
|
const auto& shape = *clipPath.AsShape()._0;
|
|
|
|
auto appUnitsPerDevPixel = frame->PresContext()->AppUnitsPerDevPixel();
|
|
const nsRect refBox =
|
|
nsLayoutUtils::ComputeClipPathGeometryBox(frame, clipPath.AsShape()._1);
|
|
|
|
wr::WrClipId clipId{};
|
|
|
|
switch (shape.tag) {
|
|
case StyleBasicShape::Tag::Rect: {
|
|
const nsRect rect =
|
|
ShapeUtils::ComputeInsetRect(shape.AsRect().rect, refBox) +
|
|
aDisplayItem.ToReferenceFrame();
|
|
|
|
nscoord radii[8] = {0};
|
|
if (ShapeUtils::ComputeRectRadii(shape.AsRect().round, refBox, rect,
|
|
radii)) {
|
|
clipId = aBuilder.DefineRoundedRectClip(
|
|
Nothing(),
|
|
wr::ToComplexClipRegion(rect, radii, appUnitsPerDevPixel));
|
|
} else {
|
|
clipId = aBuilder.DefineRectClip(
|
|
Nothing(), wr::ToLayoutRect(LayoutDeviceRect::FromAppUnits(
|
|
rect, appUnitsPerDevPixel)));
|
|
}
|
|
|
|
break;
|
|
}
|
|
case StyleBasicShape::Tag::Ellipse:
|
|
case StyleBasicShape::Tag::Circle: {
|
|
nsPoint center = ShapeUtils::ComputeCircleOrEllipseCenter(shape, refBox);
|
|
|
|
nsSize radii;
|
|
if (shape.IsEllipse()) {
|
|
radii = ShapeUtils::ComputeEllipseRadii(shape, center, refBox);
|
|
} else {
|
|
nscoord radius = ShapeUtils::ComputeCircleRadius(shape, center, refBox);
|
|
radii = {radius, radius};
|
|
}
|
|
|
|
nsRect ellipseRect(aDisplayItem.ToReferenceFrame() + center -
|
|
nsPoint(radii.width, radii.height),
|
|
radii * 2);
|
|
|
|
nscoord ellipseRadii[8];
|
|
for (const auto corner : AllPhysicalHalfCorners()) {
|
|
ellipseRadii[corner] =
|
|
HalfCornerIsX(corner) ? radii.width : radii.height;
|
|
}
|
|
|
|
clipId = aBuilder.DefineRoundedRectClip(
|
|
Nothing(), wr::ToComplexClipRegion(ellipseRect, ellipseRadii,
|
|
appUnitsPerDevPixel));
|
|
|
|
break;
|
|
}
|
|
default:
|
|
// Please don't add more exceptions, try to find a way to define the clip
|
|
// without using a mask image.
|
|
//
|
|
// And if you _really really_ need to add an exception, add it to
|
|
// SVGUtils::DetermineMaskUsage
|
|
MOZ_ASSERT_UNREACHABLE("Unhandled shape id?");
|
|
return Nothing();
|
|
}
|
|
|
|
wr::WrClipChainId clipChainId = aBuilder.DefineClipChain({clipId}, true);
|
|
|
|
return Some(clipChainId);
|
|
}
|
|
|
|
static void FillPolygonDataForDisplayItem(
|
|
const nsDisplayMasksAndClipPaths& aDisplayItem,
|
|
nsTArray<wr::LayoutPoint>& aPoints, wr::FillRule& aFillRule) {
|
|
nsIFrame* frame = aDisplayItem.Frame();
|
|
const auto* style = frame->StyleSVGReset();
|
|
bool isPolygon = style->HasClipPath() && style->mClipPath.IsShape() &&
|
|
style->mClipPath.AsShape()._0->IsPolygon();
|
|
if (!isPolygon) {
|
|
return;
|
|
}
|
|
|
|
const auto& clipPath = style->mClipPath;
|
|
const auto& shape = *clipPath.AsShape()._0;
|
|
const nsRect refBox =
|
|
nsLayoutUtils::ComputeClipPathGeometryBox(frame, clipPath.AsShape()._1);
|
|
|
|
// We only fill polygon data for polygons that are below a complexity
|
|
// limit.
|
|
nsTArray<nsPoint> vertices =
|
|
ShapeUtils::ComputePolygonVertices(shape, refBox);
|
|
if (vertices.Length() > wr::POLYGON_CLIP_VERTEX_MAX) {
|
|
return;
|
|
}
|
|
|
|
auto appUnitsPerDevPixel = frame->PresContext()->AppUnitsPerDevPixel();
|
|
|
|
for (size_t i = 0; i < vertices.Length(); ++i) {
|
|
wr::LayoutPoint point = wr::ToLayoutPoint(
|
|
LayoutDevicePoint::FromAppUnits(vertices[i], appUnitsPerDevPixel));
|
|
aPoints.AppendElement(point);
|
|
}
|
|
|
|
aFillRule = (shape.AsPolygon().fill == StyleFillRule::Nonzero)
|
|
? wr::FillRule::Nonzero
|
|
: wr::FillRule::Evenodd;
|
|
}
|
|
|
|
static Maybe<wr::WrClipChainId> CreateWRClipPathAndMasks(
|
|
nsDisplayMasksAndClipPaths* aDisplayItem, const LayoutDeviceRect& aBounds,
|
|
wr::IpcResourceUpdateQueue& aResources, wr::DisplayListBuilder& aBuilder,
|
|
const StackingContextHelper& aSc, RenderRootStateManager* aManager,
|
|
nsDisplayListBuilder* aDisplayListBuilder) {
|
|
if (auto clip = CreateSimpleClipRegion(*aDisplayItem, aBuilder)) {
|
|
return clip;
|
|
}
|
|
|
|
Maybe<wr::ImageMask> mask = aManager->CommandBuilder().BuildWrMaskImage(
|
|
aDisplayItem, aBuilder, aResources, aSc, aDisplayListBuilder, aBounds);
|
|
if (!mask) {
|
|
return Nothing();
|
|
}
|
|
|
|
// We couldn't create a simple clip region, but before we create an image
|
|
// mask clip, see if we can get a polygon clip to add to it.
|
|
nsTArray<wr::LayoutPoint> points;
|
|
wr::FillRule fillRule = wr::FillRule::Nonzero;
|
|
FillPolygonDataForDisplayItem(*aDisplayItem, points, fillRule);
|
|
|
|
wr::WrClipId clipId =
|
|
aBuilder.DefineImageMaskClip(mask.ref(), points, fillRule);
|
|
|
|
wr::WrClipChainId clipChainId = aBuilder.DefineClipChain({clipId}, true);
|
|
|
|
return Some(clipChainId);
|
|
}
|
|
|
|
bool nsDisplayMasksAndClipPaths::CreateWebRenderCommands(
|
|
wr::DisplayListBuilder& aBuilder, wr::IpcResourceUpdateQueue& aResources,
|
|
const StackingContextHelper& aSc, RenderRootStateManager* aManager,
|
|
nsDisplayListBuilder* aDisplayListBuilder) {
|
|
bool snap;
|
|
auto appUnitsPerDevPixel = mFrame->PresContext()->AppUnitsPerDevPixel();
|
|
nsRect displayBounds = GetBounds(aDisplayListBuilder, &snap);
|
|
LayoutDeviceRect bounds =
|
|
LayoutDeviceRect::FromAppUnits(displayBounds, appUnitsPerDevPixel);
|
|
|
|
Maybe<wr::WrClipChainId> clip = CreateWRClipPathAndMasks(
|
|
this, bounds, aResources, aBuilder, aSc, aManager, aDisplayListBuilder);
|
|
|
|
float oldOpacity = aBuilder.GetInheritedOpacity();
|
|
|
|
Maybe<StackingContextHelper> layer;
|
|
const StackingContextHelper* sc = &aSc;
|
|
if (clip) {
|
|
// Create a new stacking context to attach the mask to, ensuring the mask is
|
|
// applied to the aggregate, and not the individual elements.
|
|
|
|
// The stacking context shouldn't have any offset.
|
|
bounds.MoveTo(0, 0);
|
|
|
|
Maybe<float> opacity =
|
|
(SVGUtils::DetermineMaskUsage(mFrame, false).IsSimpleClipShape() &&
|
|
aBuilder.GetInheritedOpacity() != 1.0f)
|
|
? Some(aBuilder.GetInheritedOpacity())
|
|
: Nothing();
|
|
|
|
wr::StackingContextParams params;
|
|
params.clip = wr::WrStackingContextClip::ClipChain(clip->id);
|
|
params.opacity = opacity.ptrOr(nullptr);
|
|
if (mWrapsBackdropFilter) {
|
|
params.flags |= wr::StackingContextFlags::WRAPS_BACKDROP_FILTER;
|
|
}
|
|
layer.emplace(aSc, GetActiveScrolledRoot(), mFrame, this, aBuilder, params,
|
|
bounds);
|
|
sc = layer.ptr();
|
|
}
|
|
|
|
aBuilder.SetInheritedOpacity(1.0f);
|
|
const DisplayItemClipChain* oldClipChain = aBuilder.GetInheritedClipChain();
|
|
aBuilder.SetInheritedClipChain(nullptr);
|
|
CreateWebRenderCommandsNewClipListOption(aBuilder, aResources, *sc, aManager,
|
|
aDisplayListBuilder, layer.isSome());
|
|
aBuilder.SetInheritedOpacity(oldOpacity);
|
|
aBuilder.SetInheritedClipChain(oldClipChain);
|
|
|
|
return true;
|
|
}
|
|
|
|
Maybe<nsRect> nsDisplayMasksAndClipPaths::GetClipWithRespectToASR(
|
|
nsDisplayListBuilder* aBuilder, const ActiveScrolledRoot* aASR) const {
|
|
if (const DisplayItemClip* clip =
|
|
DisplayItemClipChain::ClipForASR(GetClipChain(), aASR)) {
|
|
return Some(clip->GetClipRect());
|
|
}
|
|
// This item does not have a clip with respect to |aASR|. However, we
|
|
// might still have finite bounds with respect to |aASR|. Check our
|
|
// children.
|
|
nsDisplayList* childList = GetSameCoordinateSystemChildren();
|
|
if (childList) {
|
|
return Some(childList->GetClippedBoundsWithRespectToASR(aBuilder, aASR));
|
|
}
|
|
#ifdef DEBUG
|
|
NS_ASSERTION(false, "item should have finite clip with respect to aASR");
|
|
#endif
|
|
return Nothing();
|
|
}
|
|
|
|
#ifdef MOZ_DUMP_PAINTING
|
|
void nsDisplayMasksAndClipPaths::PrintEffects(nsACString& aTo) {
|
|
nsIFrame* firstFrame =
|
|
nsLayoutUtils::FirstContinuationOrIBSplitSibling(mFrame);
|
|
bool first = true;
|
|
aTo += " effects=(";
|
|
SVGClipPathFrame* clipPathFrame;
|
|
// XXX Check return value?
|
|
SVGObserverUtils::GetAndObserveClipPath(firstFrame, &clipPathFrame);
|
|
if (clipPathFrame) {
|
|
if (!first) {
|
|
aTo += ", ";
|
|
}
|
|
aTo += nsPrintfCString(
|
|
"clip(%s)", clipPathFrame->IsTrivial() ? "trivial" : "non-trivial");
|
|
first = false;
|
|
} else if (mFrame->StyleSVGReset()->HasClipPath()) {
|
|
if (!first) {
|
|
aTo += ", ";
|
|
}
|
|
aTo += "clip(basic-shape)";
|
|
first = false;
|
|
}
|
|
|
|
nsTArray<SVGMaskFrame*> masks;
|
|
// XXX check return value?
|
|
SVGObserverUtils::GetAndObserveMasks(firstFrame, &masks);
|
|
if (!masks.IsEmpty() && masks[0]) {
|
|
if (!first) {
|
|
aTo += ", ";
|
|
}
|
|
aTo += "mask";
|
|
}
|
|
aTo += ")";
|
|
}
|
|
#endif
|
|
|
|
bool nsDisplayBackdropFilters::CreateWebRenderCommands(
|
|
wr::DisplayListBuilder& aBuilder, wr::IpcResourceUpdateQueue& aResources,
|
|
const StackingContextHelper& aSc, RenderRootStateManager* aManager,
|
|
nsDisplayListBuilder* aDisplayListBuilder) {
|
|
WrFiltersHolder wrFilters;
|
|
const ComputedStyle& style = mStyle ? *mStyle : *mFrame->Style();
|
|
auto filterChain = style.StyleEffects()->mBackdropFilters.AsSpan();
|
|
// Try building a CSS filter chain
|
|
WrFiltersStatus status = SVGIntegrationUtils::CreateWebRenderCSSFilters(
|
|
filterChain, mFrame, wrFilters);
|
|
if (status == WrFiltersStatus::BLOB_FALLBACK) {
|
|
// If the filters are too complex for CSS filters, try SVG filters
|
|
auto offsetForSVGFilters =
|
|
nsLayoutUtils::ComputeOffsetToUserSpace(aDisplayListBuilder, mFrame);
|
|
status = SVGIntegrationUtils::BuildWebRenderFilters(
|
|
mFrame, filterChain, StyleFilterType::BackdropFilter, wrFilters,
|
|
offsetForSVGFilters);
|
|
}
|
|
|
|
if (status == WrFiltersStatus::BLOB_FALLBACK) {
|
|
// TODO: If painting backdrop-filters on the content side is implemented,
|
|
// consider returning false to fall back to that.
|
|
wrFilters = {};
|
|
}
|
|
|
|
if (status == WrFiltersStatus::UNSUPPORTED) {
|
|
wrFilters = {};
|
|
}
|
|
|
|
nsCSSRendering::ImageLayerClipState clip;
|
|
nsCSSRendering::GetImageLayerClip(
|
|
style.StyleBackground()->BottomLayer(), mFrame, *style.StyleBorder(),
|
|
mBackdropRect, mBackdropRect, false,
|
|
mFrame->PresContext()->AppUnitsPerDevPixel(), &clip);
|
|
|
|
LayoutDeviceRect bounds = LayoutDeviceRect::FromAppUnits(
|
|
mBackdropRect, mFrame->PresContext()->AppUnitsPerDevPixel());
|
|
|
|
wr::ComplexClipRegion region =
|
|
wr::ToComplexClipRegion(clip.mBGClipArea, clip.mRadii,
|
|
mFrame->PresContext()->AppUnitsPerDevPixel());
|
|
|
|
aBuilder.PushBackdropFilter(wr::ToLayoutRect(bounds), region,
|
|
wrFilters.filters, wrFilters.filter_datas,
|
|
!BackfaceIsHidden());
|
|
|
|
wr::StackingContextParams params;
|
|
params.clip =
|
|
wr::WrStackingContextClip::ClipChain(aBuilder.CurrentClipChainId());
|
|
StackingContextHelper sc(aSc, GetActiveScrolledRoot(), mFrame, this, aBuilder,
|
|
params);
|
|
|
|
nsDisplayWrapList::CreateWebRenderCommands(aBuilder, aResources, sc, aManager,
|
|
aDisplayListBuilder);
|
|
return true;
|
|
}
|
|
|
|
void nsDisplayBackdropFilters::Paint(nsDisplayListBuilder* aBuilder,
|
|
gfxContext* aCtx) {
|
|
// TODO: Implement backdrop filters
|
|
GetChildren()->Paint(aBuilder, aCtx,
|
|
mFrame->PresContext()->AppUnitsPerDevPixel());
|
|
}
|
|
|
|
nsRect nsDisplayBackdropFilters::GetBounds(nsDisplayListBuilder* aBuilder,
|
|
bool* aSnap) const {
|
|
nsRect childBounds = nsDisplayWrapList::GetBounds(aBuilder, aSnap);
|
|
|
|
*aSnap = false;
|
|
|
|
return mBackdropRect.Union(childBounds);
|
|
}
|
|
|
|
/* static */
|
|
nsDisplayFilters::nsDisplayFilters(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame, nsDisplayList* aList,
|
|
nsIFrame* aStyleFrame,
|
|
bool aWrapsBackdropFilter)
|
|
: nsDisplayEffectsBase(aBuilder, aFrame, aList),
|
|
mStyle(aFrame == aStyleFrame ? nullptr : aStyleFrame->Style()),
|
|
mEffectsBounds(aFrame->InkOverflowRectRelativeToSelf()),
|
|
mWrapsBackdropFilter(aWrapsBackdropFilter) {
|
|
MOZ_COUNT_CTOR(nsDisplayFilters);
|
|
mVisibleRect = aBuilder->GetVisibleRect() +
|
|
aBuilder->GetCurrentFrameOffsetToReferenceFrame();
|
|
}
|
|
|
|
void nsDisplayFilters::Paint(nsDisplayListBuilder* aBuilder, gfxContext* aCtx) {
|
|
PaintWithContentsPaintCallback(aBuilder, aCtx, [&](gfxContext* aContext) {
|
|
GetChildren()->Paint(aBuilder, aContext,
|
|
mFrame->PresContext()->AppUnitsPerDevPixel());
|
|
});
|
|
}
|
|
|
|
void nsDisplayFilters::PaintWithContentsPaintCallback(
|
|
nsDisplayListBuilder* aBuilder, gfxContext* aCtx,
|
|
const std::function<void(gfxContext* aContext)>& aPaintChildren) {
|
|
imgDrawingParams imgParams(aBuilder->GetImageDecodeFlags());
|
|
nsRect borderArea = nsRect(ToReferenceFrame(), mFrame->GetSize());
|
|
PaintFramesParams params(*aCtx, mFrame, mVisibleRect, borderArea, aBuilder,
|
|
false, imgParams);
|
|
|
|
gfxPoint userSpaceToFrameSpaceOffset =
|
|
SVGIntegrationUtils::GetOffsetToUserSpaceInDevPx(mFrame, params);
|
|
|
|
auto filterChain = mStyle ? mStyle->StyleEffects()->mFilters.AsSpan()
|
|
: mFrame->StyleEffects()->mFilters.AsSpan();
|
|
SVGIntegrationUtils::PaintFilter(
|
|
params, filterChain,
|
|
[&](gfxContext& aContext, imgDrawingParams&, const gfxMatrix*,
|
|
const nsIntRect*) {
|
|
gfxContextMatrixAutoSaveRestore autoSR(&aContext);
|
|
aContext.SetMatrixDouble(aContext.CurrentMatrixDouble().PreTranslate(
|
|
-userSpaceToFrameSpaceOffset));
|
|
aPaintChildren(&aContext);
|
|
});
|
|
}
|
|
|
|
bool nsDisplayFilters::CanCreateWebRenderCommands() const {
|
|
return SVGIntegrationUtils::CanCreateWebRenderFiltersForFrame(mFrame);
|
|
}
|
|
|
|
bool nsDisplayFilters::CreateWebRenderCommands(
|
|
wr::DisplayListBuilder& aBuilder, wr::IpcResourceUpdateQueue& aResources,
|
|
const StackingContextHelper& aSc, RenderRootStateManager* aManager,
|
|
nsDisplayListBuilder* aDisplayListBuilder) {
|
|
WrFiltersHolder wrFilters;
|
|
const ComputedStyle& style = mStyle ? *mStyle : *mFrame->Style();
|
|
auto filterChain = style.StyleEffects()->mFilters.AsSpan();
|
|
// Try building a CSS filter chain
|
|
WrFiltersStatus status = SVGIntegrationUtils::CreateWebRenderCSSFilters(
|
|
filterChain, mFrame, wrFilters);
|
|
if (status == WrFiltersStatus::BLOB_FALLBACK) {
|
|
// Try building an SVG filter graph
|
|
auto offsetForSVGFilters =
|
|
nsLayoutUtils::ComputeOffsetToUserSpace(aDisplayListBuilder, mFrame);
|
|
status = SVGIntegrationUtils::BuildWebRenderFilters(
|
|
mFrame, filterChain, StyleFilterType::Filter, wrFilters,
|
|
offsetForSVGFilters);
|
|
if (status == WrFiltersStatus::BLOB_FALLBACK && mStyle) {
|
|
// TODO(bug 1769223): Support fallback filters in the root code-path,
|
|
// perhaps. For now treat it the same way as invalid filters.
|
|
status = WrFiltersStatus::UNSUPPORTED;
|
|
}
|
|
}
|
|
|
|
switch (status) {
|
|
case WrFiltersStatus::BLOB_FALLBACK:
|
|
// Draw using fallback.
|
|
return false;
|
|
case WrFiltersStatus::UNSUPPORTED:
|
|
// https://drafts.fxtf.org/filter-effects/#typedef-filter-url:
|
|
//
|
|
// If the filter references a non-existent object or the referenced
|
|
// object is not a filter element, then the whole filter chain is
|
|
// ignored. No filter is applied to the object.
|
|
//
|
|
// Note that other engines have a weird discrepancy between SVG and HTML
|
|
// content here, but the spec is clear.
|
|
wrFilters = {};
|
|
break;
|
|
case WrFiltersStatus::DISABLED_FOR_PERFORMANCE:
|
|
// SVG spec allows us to drop the entire filter graph if it contains too
|
|
// many filters to render or other performance considerations.
|
|
wrFilters = {};
|
|
break;
|
|
case WrFiltersStatus::CHAIN:
|
|
case WrFiltersStatus::SVGFE:
|
|
// Filter the image using the wrFilters produced above.
|
|
break;
|
|
}
|
|
|
|
uint64_t clipChainId;
|
|
if (wrFilters.post_filters_clip) {
|
|
auto devPxRect = LayoutDeviceRect::FromAppUnits(
|
|
wrFilters.post_filters_clip.value() + ToReferenceFrame(),
|
|
mFrame->PresContext()->AppUnitsPerDevPixel());
|
|
auto clipId =
|
|
aBuilder.DefineRectClip(Nothing(), wr::ToLayoutRect(devPxRect));
|
|
clipChainId = aBuilder.DefineClipChain({clipId}, true).id;
|
|
} else {
|
|
clipChainId = aBuilder.CurrentClipChainId();
|
|
}
|
|
wr::WrStackingContextClip clip =
|
|
wr::WrStackingContextClip::ClipChain(clipChainId);
|
|
|
|
float opacity = aBuilder.GetInheritedOpacity();
|
|
aBuilder.SetInheritedOpacity(1.0f);
|
|
const DisplayItemClipChain* oldClipChain = aBuilder.GetInheritedClipChain();
|
|
aBuilder.SetInheritedClipChain(nullptr);
|
|
wr::StackingContextParams params;
|
|
params.mFilters = std::move(wrFilters.filters);
|
|
params.mFilterDatas = std::move(wrFilters.filter_datas);
|
|
params.opacity = opacity != 1.0f ? &opacity : nullptr;
|
|
params.clip = clip;
|
|
if (mWrapsBackdropFilter) {
|
|
params.flags |= wr::StackingContextFlags::WRAPS_BACKDROP_FILTER;
|
|
}
|
|
StackingContextHelper sc(aSc, GetActiveScrolledRoot(), mFrame, this, aBuilder,
|
|
params);
|
|
|
|
nsDisplayEffectsBase::CreateWebRenderCommands(aBuilder, aResources, sc,
|
|
aManager, aDisplayListBuilder);
|
|
aBuilder.SetInheritedOpacity(opacity);
|
|
aBuilder.SetInheritedClipChain(oldClipChain);
|
|
|
|
return true;
|
|
}
|
|
|
|
#ifdef MOZ_DUMP_PAINTING
|
|
void nsDisplayFilters::PrintEffects(nsACString& aTo) {
|
|
nsIFrame* firstFrame =
|
|
nsLayoutUtils::FirstContinuationOrIBSplitSibling(mFrame);
|
|
bool first = true;
|
|
aTo += " effects=(";
|
|
// We may exist for a mix of CSS filter functions and/or references to SVG
|
|
// filters. If we have invalid references to SVG filters then we paint
|
|
// nothing, but otherwise we will apply one or more filters.
|
|
if (SVGObserverUtils::GetAndObserveFilters(firstFrame, nullptr) !=
|
|
SVGObserverUtils::eHasRefsSomeInvalid) {
|
|
if (!first) {
|
|
aTo += ", ";
|
|
}
|
|
aTo += "filter";
|
|
}
|
|
aTo += ")";
|
|
}
|
|
#endif
|
|
|
|
nsDisplaySVGWrapper::nsDisplaySVGWrapper(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame, nsDisplayList* aList)
|
|
: nsDisplayWrapList(aBuilder, aFrame, aList) {
|
|
MOZ_COUNT_CTOR(nsDisplaySVGWrapper);
|
|
}
|
|
|
|
bool nsDisplaySVGWrapper::ShouldFlattenAway(nsDisplayListBuilder* aBuilder) {
|
|
return !aBuilder->GetWidgetLayerManager();
|
|
}
|
|
|
|
bool nsDisplaySVGWrapper::CreateWebRenderCommands(
|
|
wr::DisplayListBuilder& aBuilder, wr::IpcResourceUpdateQueue& aResources,
|
|
const StackingContextHelper& aSc, RenderRootStateManager* aManager,
|
|
nsDisplayListBuilder* aDisplayListBuilder) {
|
|
return CreateWebRenderCommandsNewClipListOption(
|
|
aBuilder, aResources, aSc, aManager, aDisplayListBuilder, false);
|
|
}
|
|
|
|
nsDisplayForeignObject::nsDisplayForeignObject(nsDisplayListBuilder* aBuilder,
|
|
nsIFrame* aFrame,
|
|
nsDisplayList* aList)
|
|
: nsDisplayWrapList(aBuilder, aFrame, aList) {
|
|
MOZ_COUNT_CTOR(nsDisplayForeignObject);
|
|
}
|
|
|
|
#ifdef NS_BUILD_REFCNT_LOGGING
|
|
nsDisplayForeignObject::~nsDisplayForeignObject() {
|
|
MOZ_COUNT_DTOR(nsDisplayForeignObject);
|
|
}
|
|
#endif
|
|
|
|
bool nsDisplayForeignObject::ShouldFlattenAway(nsDisplayListBuilder* aBuilder) {
|
|
return !aBuilder->GetWidgetLayerManager();
|
|
}
|
|
|
|
bool nsDisplayForeignObject::CreateWebRenderCommands(
|
|
wr::DisplayListBuilder& aBuilder, wr::IpcResourceUpdateQueue& aResources,
|
|
const StackingContextHelper& aSc, RenderRootStateManager* aManager,
|
|
nsDisplayListBuilder* aDisplayListBuilder) {
|
|
AutoRestore<bool> restoreDoGrouping(aManager->CommandBuilder().mDoGrouping);
|
|
aManager->CommandBuilder().mDoGrouping = false;
|
|
return CreateWebRenderCommandsNewClipListOption(
|
|
aBuilder, aResources, aSc, aManager, aDisplayListBuilder, false);
|
|
}
|
|
|
|
void nsDisplayLink::Paint(nsDisplayListBuilder* aBuilder, gfxContext* aCtx) {
|
|
auto appPerDev = mFrame->PresContext()->AppUnitsPerDevPixel();
|
|
aCtx->GetDrawTarget()->Link(
|
|
mLinkURI.get(), mLinkDest.get(),
|
|
NSRectToRect(GetPaintRect(aBuilder, aCtx), appPerDev));
|
|
}
|
|
|
|
void nsDisplayDestination::Paint(nsDisplayListBuilder* aBuilder,
|
|
gfxContext* aCtx) {
|
|
auto appPerDev = mFrame->PresContext()->AppUnitsPerDevPixel();
|
|
aCtx->GetDrawTarget()->Destination(
|
|
mDestinationName.get(),
|
|
NSPointToPoint(GetPaintRect(aBuilder, aCtx).TopLeft(), appPerDev));
|
|
}
|
|
|
|
void nsDisplayListCollection::SerializeWithCorrectZOrder(
|
|
nsDisplayList* aOutResultList, nsIContent* aContent) {
|
|
// Sort PositionedDescendants() in CSS 'z-order' order. The list is already
|
|
// in content document order and SortByZOrder is a stable sort which
|
|
// guarantees that boxes produced by the same element are placed together
|
|
// in the sort. Consider a position:relative inline element that breaks
|
|
// across lines and has absolutely positioned children; all the abs-pos
|
|
// children should be z-ordered after all the boxes for the position:relative
|
|
// element itself.
|
|
PositionedDescendants()->SortByZOrder();
|
|
|
|
// Now follow the rules of http://www.w3.org/TR/CSS21/zindex.html
|
|
// 1,2: backgrounds and borders
|
|
aOutResultList->AppendToTop(BorderBackground());
|
|
// 3: negative z-index children.
|
|
for (auto* item : PositionedDescendants()->TakeItems()) {
|
|
if (item->ZIndex() < 0) {
|
|
aOutResultList->AppendToTop(item);
|
|
} else {
|
|
PositionedDescendants()->AppendToTop(item);
|
|
}
|
|
}
|
|
|
|
// 4: block backgrounds
|
|
aOutResultList->AppendToTop(BlockBorderBackgrounds());
|
|
// 5: floats
|
|
aOutResultList->AppendToTop(Floats());
|
|
// 7: general content
|
|
aOutResultList->AppendToTop(Content());
|
|
// 7.5: outlines, in content tree order. We need to sort by content order
|
|
// because an element with outline that breaks and has children with outline
|
|
// might have placed child outline items between its own outline items.
|
|
// The element's outline items need to all come before any child outline
|
|
// items.
|
|
if (aContent) {
|
|
Outlines()->SortByContentOrder(aContent);
|
|
}
|
|
aOutResultList->AppendToTop(Outlines());
|
|
// 8, 9: non-negative z-index children
|
|
aOutResultList->AppendToTop(PositionedDescendants());
|
|
}
|
|
|
|
uint32_t PaintTelemetry::sPaintLevel = 0;
|
|
|
|
PaintTelemetry::AutoRecordPaint::AutoRecordPaint() {
|
|
// Don't record nested paints.
|
|
if (sPaintLevel++ > 0) {
|
|
return;
|
|
}
|
|
|
|
mStart = TimeStamp::Now();
|
|
}
|
|
|
|
PaintTelemetry::AutoRecordPaint::~AutoRecordPaint() {
|
|
MOZ_ASSERT(sPaintLevel != 0);
|
|
if (--sPaintLevel > 0) {
|
|
return;
|
|
}
|
|
|
|
// If we're in multi-process mode, don't include paint times for the parent
|
|
// process.
|
|
if (gfxVars::BrowserTabsRemoteAutostart() && XRE_IsParentProcess()) {
|
|
return;
|
|
}
|
|
|
|
// Record the total time.
|
|
mozilla::glean::gfx_content::paint_time.AccumulateRawDuration(
|
|
TimeStamp::Now() - mStart);
|
|
}
|
|
|
|
static nsIFrame* GetSelfOrPlaceholderFor(nsIFrame* aFrame) {
|
|
if (aFrame->HasAnyStateBits(NS_FRAME_IS_PUSHED_FLOAT)) {
|
|
return aFrame;
|
|
}
|
|
|
|
if (aFrame->HasAnyStateBits(NS_FRAME_OUT_OF_FLOW) &&
|
|
!aFrame->GetPrevInFlow()) {
|
|
return aFrame->GetPlaceholderFrame();
|
|
}
|
|
|
|
return aFrame;
|
|
}
|
|
|
|
static nsIFrame* GetAncestorFor(nsIFrame* aFrame) {
|
|
nsIFrame* f = GetSelfOrPlaceholderFor(aFrame);
|
|
MOZ_ASSERT(f);
|
|
return nsLayoutUtils::GetCrossDocParentFrameInProcess(f);
|
|
}
|
|
|
|
nsDisplayListBuilder::AutoBuildingDisplayList::AutoBuildingDisplayList(
|
|
nsDisplayListBuilder* aBuilder, nsIFrame* aForChild,
|
|
const nsRect& aVisibleRect, const nsRect& aDirtyRect,
|
|
const bool aIsTransformed)
|
|
: mBuilder(aBuilder),
|
|
mPrevFrame(aBuilder->mCurrentFrame),
|
|
mPrevReferenceFrame(aBuilder->mCurrentReferenceFrame),
|
|
mPrevOffset(aBuilder->mCurrentOffsetToReferenceFrame),
|
|
mPrevAdditionalOffset(aBuilder->mAdditionalOffset),
|
|
mPrevVisibleRect(aBuilder->mVisibleRect),
|
|
mPrevDirtyRect(aBuilder->mDirtyRect),
|
|
mPrevCompositorHitTestInfo(aBuilder->mCompositorHitTestInfo),
|
|
mPrevAncestorHasApzAwareEventHandler(
|
|
aBuilder->mAncestorHasApzAwareEventHandler),
|
|
mPrevBuildingInvisibleItems(aBuilder->mBuildingInvisibleItems),
|
|
mPrevInInvalidSubtree(aBuilder->mInInvalidSubtree) {
|
|
if (aIsTransformed) {
|
|
aBuilder->mCurrentOffsetToReferenceFrame =
|
|
aBuilder->AdditionalOffset().refOr(nsPoint());
|
|
aBuilder->mCurrentReferenceFrame = aForChild;
|
|
} else if (aBuilder->mCurrentFrame == aForChild->GetParent()) {
|
|
aBuilder->mCurrentOffsetToReferenceFrame += aForChild->GetPosition();
|
|
} else {
|
|
aBuilder->mCurrentReferenceFrame = aBuilder->FindReferenceFrameFor(
|
|
aForChild, &aBuilder->mCurrentOffsetToReferenceFrame);
|
|
}
|
|
|
|
// If aForChild is being visited from a frame other than it's ancestor frame,
|
|
// mInInvalidSubtree will need to be recalculated the slow way.
|
|
if (aForChild == mPrevFrame || GetAncestorFor(aForChild) == mPrevFrame) {
|
|
aBuilder->mInInvalidSubtree =
|
|
aBuilder->mInInvalidSubtree || aForChild->IsFrameModified();
|
|
} else {
|
|
aBuilder->mInInvalidSubtree = AnyContentAncestorModified(aForChild);
|
|
}
|
|
|
|
aBuilder->mCurrentFrame = aForChild;
|
|
aBuilder->mVisibleRect = aVisibleRect;
|
|
aBuilder->mDirtyRect =
|
|
aBuilder->mInInvalidSubtree ? aVisibleRect : aDirtyRect;
|
|
}
|
|
|
|
} // namespace mozilla
|