зеркало из https://github.com/mozilla/gecko-dev.git
7547 строки
279 KiB
C++
7547 строки
279 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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#include "mozilla/DebugOnly.h"
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#include "FrameLayerBuilder.h"
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#include "gfxContext.h"
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#include "mozilla/LookAndFeel.h"
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#include "mozilla/Maybe.h"
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#include "mozilla/PresShell.h"
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#include "mozilla/dom/EffectsInfo.h"
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#include "mozilla/dom/RemoteBrowser.h"
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#include "mozilla/dom/ProfileTimelineMarkerBinding.h"
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#include "mozilla/gfx/Matrix.h"
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#include "ActiveLayerTracker.h"
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#include "BasicLayers.h"
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#include "ImageContainer.h"
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#include "ImageLayers.h"
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#include "LayerTreeInvalidation.h"
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#include "Layers.h"
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#include "LayerUserData.h"
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#include "MatrixStack.h"
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#include "MaskLayerImageCache.h"
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#include "UnitTransforms.h"
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#include "Units.h"
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#include "gfx2DGlue.h"
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#include "gfxEnv.h"
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#include "gfxUtils.h"
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#include "nsAutoPtr.h"
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#include "nsAnimationManager.h"
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#include "nsDisplayList.h"
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#include "nsDocShell.h"
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#include "nsIScrollableFrame.h"
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#include "nsImageFrame.h"
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#include "nsSubDocumentFrame.h"
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#include "nsLayoutUtils.h"
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#include "nsPresContext.h"
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#include "nsPrintfCString.h"
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#include "nsSVGIntegrationUtils.h"
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#include "nsTransitionManager.h"
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#include "mozilla/LayerTimelineMarker.h"
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#include "mozilla/EffectCompositor.h"
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#include "mozilla/LayerAnimationInfo.h"
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#include "mozilla/Move.h"
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#include "mozilla/ReverseIterator.h"
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#include "mozilla/gfx/2D.h"
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#include "mozilla/gfx/Tools.h"
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#include "mozilla/layers/ShadowLayers.h"
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#include "mozilla/layers/TextureClient.h"
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#include "mozilla/layers/TextureWrapperImage.h"
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#include "mozilla/layers/WebRenderUserData.h"
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#include "mozilla/PerfStats.h"
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#include "mozilla/Unused.h"
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#include "GeckoProfiler.h"
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#include "LayersLogging.h"
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#include "mozilla/StaticPrefs.h"
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#include <algorithm>
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#include <functional>
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#include <deque>
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using namespace mozilla::layers;
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using namespace mozilla::gfx;
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// PaintedLayerData::mAssignedDisplayItems is a std::vector, which is
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// non-memmovable
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DECLARE_USE_COPY_CONSTRUCTORS(mozilla::PaintedLayerData);
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namespace mozilla {
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class PaintedDisplayItemLayerUserData;
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static nsTHashtable<nsPtrHashKey<DisplayItemData>>* sAliveDisplayItemDatas;
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/**
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* The address of gPaintedDisplayItemLayerUserData is used as the user
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* data key for PaintedLayers created by FrameLayerBuilder.
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* It identifies PaintedLayers used to draw non-layer content, which are
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* therefore eligible for recycling. We want display items to be able to
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* create their own dedicated PaintedLayers in BuildLayer, if necessary,
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* and we wouldn't want to accidentally recycle those.
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* The user data is a PaintedDisplayItemLayerUserData.
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*/
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uint8_t gPaintedDisplayItemLayerUserData;
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/**
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* The address of gColorLayerUserData is used as the user
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* data key for ColorLayers created by FrameLayerBuilder.
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* The user data is null.
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*/
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uint8_t gColorLayerUserData;
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/**
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* The address of gImageLayerUserData is used as the user
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* data key for ImageLayers created by FrameLayerBuilder.
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* The user data is null.
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*/
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uint8_t gImageLayerUserData;
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/**
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* The address of gLayerManagerUserData is used as the user
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* data key for retained LayerManagers managed by FrameLayerBuilder.
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* The user data is a LayerManagerData.
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*/
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uint8_t gLayerManagerUserData;
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/**
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* The address of gMaskLayerUserData is used as the user
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* data key for mask layers managed by FrameLayerBuilder.
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* The user data is a MaskLayerUserData.
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*/
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uint8_t gMaskLayerUserData;
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/**
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* The address of gCSSMaskLayerUserData is used as the user
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* data key for mask layers of css masking managed by FrameLayerBuilder.
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* The user data is a CSSMaskLayerUserData.
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*/
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uint8_t gCSSMaskLayerUserData;
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// a global cache of image containers used for mask layers
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static MaskLayerImageCache* gMaskLayerImageCache = nullptr;
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static inline MaskLayerImageCache* GetMaskLayerImageCache() {
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if (!gMaskLayerImageCache) {
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gMaskLayerImageCache = new MaskLayerImageCache();
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}
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return gMaskLayerImageCache;
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}
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struct DisplayItemEntry {
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DisplayItemEntry(nsDisplayItem* aItem, DisplayItemEntryType aType)
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: mItem(aItem), mType(aType) {}
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nsDisplayItem* mItem;
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DisplayItemEntryType mType;
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};
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/**
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* Returns true if the given |aType| is an effect start marker.
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*/
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static bool IsEffectStartMarker(DisplayItemEntryType aType) {
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return aType == DisplayItemEntryType::PushOpacity ||
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aType == DisplayItemEntryType::PushOpacityWithBg ||
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aType == DisplayItemEntryType::PushTransform;
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}
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/**
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* Returns true if the given |aType| is an effect end marker.
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*/
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static bool IsEffectEndMarker(DisplayItemEntryType aType) {
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return aType == DisplayItemEntryType::PopOpacity ||
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aType == DisplayItemEntryType::PopTransform;
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}
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enum class MarkerType { StartMarker, EndMarker };
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/**
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* Returns true if the given nsDisplayOpacity |aItem| has had opacity applied
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* to its children and can be flattened away.
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*/
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static bool IsOpacityAppliedToChildren(nsDisplayItem* aItem) {
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MOZ_ASSERT(aItem->GetType() == DisplayItemType::TYPE_OPACITY);
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return static_cast<nsDisplayOpacity*>(aItem)->OpacityAppliedToChildren();
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}
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/**
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* Returns true if the given display item type supports flattening with markers.
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*/
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static bool SupportsFlatteningWithMarkers(const DisplayItemType& aType) {
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return aType == DisplayItemType::TYPE_OPACITY ||
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aType == DisplayItemType::TYPE_TRANSFORM;
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}
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/**
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* Adds the effect marker to |aMarkers| based on the type of |aItem| and whether
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* |markerType| is a start or end marker.
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*/
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template <MarkerType markerType>
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static bool AddMarkerIfNeeded(nsDisplayItem* aItem,
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std::deque<DisplayItemEntry>& aMarkers) {
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const DisplayItemType type = aItem->GetType();
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if (!SupportsFlatteningWithMarkers(type)) {
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return false;
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}
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DisplayItemEntryType marker;
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// Just a fancy way to avoid writing two separate functions to select between
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// PUSH and POP markers. This is done during compile time based on |markerType|.
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#define GET_MARKER(start_marker, end_marker) \
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std::conditional< \
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markerType == MarkerType::StartMarker, \
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std::integral_constant<DisplayItemEntryType, start_marker>, \
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std::integral_constant<DisplayItemEntryType, end_marker>>::type::value;
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switch (type) {
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case DisplayItemType::TYPE_OPACITY:
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if (IsOpacityAppliedToChildren(aItem)) {
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// TODO(miko): I am not a fan of this. The more correct solution would
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// be to return an enum from nsDisplayItem::ShouldFlattenAway(), so that
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// we could distinguish between different flattening methods and avoid
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// entering this function when markers are not needed.
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return false;
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}
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marker = GET_MARKER(DisplayItemEntryType::PushOpacity,
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DisplayItemEntryType::PopOpacity);
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break;
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case DisplayItemType::TYPE_TRANSFORM:
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marker = GET_MARKER(DisplayItemEntryType::PushTransform,
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DisplayItemEntryType::PopTransform);
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break;
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default:
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MOZ_ASSERT_UNREACHABLE("Invalid display item type!");
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break;
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}
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aMarkers.emplace_back(aItem, marker);
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return true;
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}
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DisplayItemData::DisplayItemData(LayerManagerData* aParent, uint32_t aKey,
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Layer* aLayer, nsIFrame* aFrame)
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: mRefCnt(0),
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mParent(aParent),
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mLayer(aLayer),
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mDisplayItemKey(aKey),
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mItem(nullptr),
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mUsed(true),
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mIsInvalid(false),
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mReusedItem(false) {
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MOZ_COUNT_CTOR(DisplayItemData);
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if (!sAliveDisplayItemDatas) {
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sAliveDisplayItemDatas = new nsTHashtable<nsPtrHashKey<DisplayItemData>>();
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}
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MOZ_RELEASE_ASSERT(!sAliveDisplayItemDatas->Contains(this));
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sAliveDisplayItemDatas->PutEntry(this);
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MOZ_RELEASE_ASSERT(mLayer);
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if (aFrame) {
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AddFrame(aFrame);
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}
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}
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void DisplayItemData::AddFrame(nsIFrame* aFrame) {
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MOZ_RELEASE_ASSERT(mLayer);
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MOZ_RELEASE_ASSERT(!mFrameList.Contains(aFrame));
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mFrameList.AppendElement(aFrame);
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SmallPointerArray<DisplayItemData>& array = aFrame->DisplayItemData();
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array.AppendElement(this);
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}
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void DisplayItemData::RemoveFrame(nsIFrame* aFrame) {
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MOZ_RELEASE_ASSERT(mLayer);
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bool result = mFrameList.RemoveElement(aFrame);
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MOZ_RELEASE_ASSERT(result, "Can't remove a frame that wasn't added!");
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SmallPointerArray<DisplayItemData>& array = aFrame->DisplayItemData();
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array.RemoveElement(this);
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}
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void DisplayItemData::EndUpdate() {
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MOZ_RELEASE_ASSERT(mLayer);
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mIsInvalid = false;
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mUsed = false;
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mReusedItem = false;
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mOldTransform = nullptr;
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}
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void DisplayItemData::EndUpdate(nsAutoPtr<nsDisplayItemGeometry> aGeometry) {
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MOZ_RELEASE_ASSERT(mLayer);
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MOZ_ASSERT(mItem);
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MOZ_ASSERT(mGeometry || aGeometry);
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if (aGeometry) {
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mGeometry = aGeometry;
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}
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mClip = mItem->GetClip();
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mChangedFrameInvalidations.SetEmpty();
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EndUpdate();
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}
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void DisplayItemData::BeginUpdate(Layer* aLayer, LayerState aState,
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bool aFirstUpdate,
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nsPaintedDisplayItem* aItem /* = nullptr */) {
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bool isReused = false;
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bool isMerged = false;
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if (aItem) {
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isReused = !aFirstUpdate ? aItem->IsReused() : false;
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const nsDisplayWrapList* wraplist = aItem->AsDisplayWrapList();
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isMerged = wraplist && wraplist->HasMergedFrames();
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}
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BeginUpdate(aLayer, aState, aItem, isReused, isMerged);
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}
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void DisplayItemData::BeginUpdate(Layer* aLayer, LayerState aState,
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nsPaintedDisplayItem* aItem, bool aIsReused,
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bool aIsMerged) {
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MOZ_RELEASE_ASSERT(mLayer);
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MOZ_RELEASE_ASSERT(aLayer);
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mLayer = aLayer;
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mOptLayer = nullptr;
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mInactiveManager = nullptr;
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mLayerState = aState;
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mUsed = true;
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if (aLayer->AsPaintedLayer()) {
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if (aItem != mItem) {
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aItem->SetDisplayItemData(this, aLayer->Manager());
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} else {
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MOZ_ASSERT(aItem->GetDisplayItemData() == this);
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}
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mReusedItem = aIsReused;
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}
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if (!aItem) {
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return;
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}
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if (!aIsMerged && mFrameList.Length() == 1) {
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MOZ_ASSERT(mFrameList[0] == aItem->Frame());
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return;
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}
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// We avoid adding or removing element unnecessarily
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// since we have to modify userdata each time
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AutoTArray<nsIFrame*, 4> copy(mFrameList);
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if (!copy.RemoveElement(aItem->Frame())) {
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AddFrame(aItem->Frame());
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mChangedFrameInvalidations.Or(mChangedFrameInvalidations,
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aItem->Frame()->GetVisualOverflowRect());
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}
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if (aIsMerged) {
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MOZ_ASSERT(aItem->AsDisplayWrapList());
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for (nsIFrame* frame : aItem->AsDisplayWrapList()->GetMergedFrames()) {
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if (!copy.RemoveElement(frame)) {
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AddFrame(frame);
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mChangedFrameInvalidations.Or(mChangedFrameInvalidations,
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frame->GetVisualOverflowRect());
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}
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}
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}
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for (nsIFrame* frame : copy) {
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RemoveFrame(frame);
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mChangedFrameInvalidations.Or(mChangedFrameInvalidations,
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frame->GetVisualOverflowRect());
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}
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}
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static const nsIFrame* sDestroyedFrame = nullptr;
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DisplayItemData::~DisplayItemData() {
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MOZ_COUNT_DTOR(DisplayItemData);
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if (mItem) {
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MOZ_ASSERT(mItem->GetDisplayItemData() == this);
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mItem->SetDisplayItemData(nullptr, nullptr);
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}
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for (uint32_t i = 0; i < mFrameList.Length(); i++) {
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nsIFrame* frame = mFrameList[i];
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if (frame == sDestroyedFrame) {
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continue;
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}
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SmallPointerArray<DisplayItemData>& array = frame->DisplayItemData();
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array.RemoveElement(this);
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}
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MOZ_RELEASE_ASSERT(sAliveDisplayItemDatas);
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nsPtrHashKey<mozilla::DisplayItemData>* entry =
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sAliveDisplayItemDatas->GetEntry(this);
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MOZ_RELEASE_ASSERT(entry);
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sAliveDisplayItemDatas->RemoveEntry(entry);
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if (sAliveDisplayItemDatas->Count() == 0) {
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delete sAliveDisplayItemDatas;
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sAliveDisplayItemDatas = nullptr;
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}
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}
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void DisplayItemData::NotifyRemoved() {
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if (mDisplayItemKey > static_cast<uint8_t>(DisplayItemType::TYPE_MAX)) {
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// This is sort of a hack. The display item key has higher bits set, which
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// means that it is not the only display item for the frame.
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// This branch skips separator transforms.
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return;
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}
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const DisplayItemType type = GetDisplayItemTypeFromKey(mDisplayItemKey);
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if (type == DisplayItemType::TYPE_REMOTE) {
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// TYPE_REMOTE doesn't support merging, so access it directly
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MOZ_ASSERT(mFrameList.Length() == 1);
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if (mFrameList.Length() != 1) {
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return;
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}
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// This is a remote browser that is going away, notify it that it is now
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// hidden
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nsIFrame* frame = mFrameList[0];
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nsSubDocumentFrame* subdoc = static_cast<nsSubDocumentFrame*>(frame);
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nsFrameLoader* frameLoader = subdoc->FrameLoader();
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if (frameLoader && frameLoader->GetRemoteBrowser()) {
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frameLoader->GetRemoteBrowser()->UpdateEffects(
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mozilla::dom::EffectsInfo::FullyHidden());
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}
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}
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// FIXME: Bug 1530857: Add background_color.
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if (type != DisplayItemType::TYPE_TRANSFORM &&
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type != DisplayItemType::TYPE_OPACITY) {
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return;
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}
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for (nsIFrame* frame : mFrameList) {
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EffectCompositor::ClearIsRunningOnCompositor(frame, type);
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}
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}
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const nsRegion& DisplayItemData::GetChangedFrameInvalidations() {
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return mChangedFrameInvalidations;
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}
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DisplayItemData* DisplayItemData::AssertDisplayItemData(
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DisplayItemData* aData) {
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MOZ_RELEASE_ASSERT(aData);
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MOZ_RELEASE_ASSERT(sAliveDisplayItemDatas &&
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sAliveDisplayItemDatas->Contains(aData));
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MOZ_RELEASE_ASSERT(aData->mLayer);
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return aData;
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}
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/**
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* This is the userdata we associate with a layer manager.
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*/
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class LayerManagerData : public LayerUserData {
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public:
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explicit LayerManagerData(LayerManager* aManager)
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: mLayerManager(aManager),
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#ifdef DEBUG_DISPLAY_ITEM_DATA
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mParent(nullptr),
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#endif
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mInvalidateAllLayers(false) {
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MOZ_COUNT_CTOR(LayerManagerData);
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}
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~LayerManagerData() override { MOZ_COUNT_DTOR(LayerManagerData); }
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#ifdef DEBUG_DISPLAY_ITEM_DATA
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void Dump(const char* aPrefix = "") {
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printf_stderr("%sLayerManagerData %p\n", aPrefix, this);
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for (auto& data : mDisplayItems) {
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nsAutoCString prefix;
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prefix += aPrefix;
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prefix += " ";
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const char* layerState;
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switch (data->mLayerState) {
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case LayerState::LAYER_NONE:
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layerState = "LAYER_NONE";
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break;
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case LayerState::LAYER_INACTIVE:
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layerState = "LAYER_INACTIVE";
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break;
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case LayerState::LAYER_ACTIVE:
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layerState = "LAYER_ACTIVE";
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break;
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case LayerState::LAYER_ACTIVE_FORCE:
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layerState = "LAYER_ACTIVE_FORCE";
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break;
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case LayerState::LAYER_ACTIVE_EMPTY:
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layerState = "LAYER_ACTIVE_EMPTY";
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break;
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case LayerState::LAYER_SVG_EFFECTS:
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layerState = "LAYER_SVG_EFFECTS";
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break;
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}
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uint32_t mask = (1 << TYPE_BITS) - 1;
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nsAutoCString str;
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str += prefix;
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str += nsPrintfCString("Frame %p ", data->mFrameList[0]);
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str += nsDisplayItem::DisplayItemTypeName(
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static_cast<nsDisplayItem::Type>(data->mDisplayItemKey & mask));
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if ((data->mDisplayItemKey >> TYPE_BITS)) {
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str += nsPrintfCString("(%i)", data->mDisplayItemKey >> TYPE_BITS);
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}
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str += nsPrintfCString(", %s, Layer %p", layerState, data->mLayer.get());
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if (data->mOptLayer) {
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str += nsPrintfCString(", OptLayer %p", data->mOptLayer.get());
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}
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if (data->mInactiveManager) {
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str += nsPrintfCString(", InactiveLayerManager %p",
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data->mInactiveManager.get());
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}
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str += "\n";
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|
|
printf_stderr("%s", str.get());
|
|
|
|
if (data->mInactiveManager) {
|
|
prefix += " ";
|
|
printf_stderr("%sDumping inactive layer info:\n", prefix.get());
|
|
LayerManagerData* lmd = static_cast<LayerManagerData*>(
|
|
data->mInactiveManager->GetUserData(&gLayerManagerUserData));
|
|
lmd->Dump(prefix.get());
|
|
}
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/**
|
|
* Tracks which frames have layers associated with them.
|
|
*/
|
|
LayerManager* mLayerManager;
|
|
#ifdef DEBUG_DISPLAY_ITEM_DATA
|
|
LayerManagerData* mParent;
|
|
#endif
|
|
std::vector<RefPtr<DisplayItemData>> mDisplayItems;
|
|
bool mInvalidateAllLayers;
|
|
};
|
|
|
|
/* static */
|
|
void FrameLayerBuilder::DestroyDisplayItemDataFor(nsIFrame* aFrame) {
|
|
RemoveFrameFromLayerManager(aFrame, aFrame->DisplayItemData());
|
|
aFrame->DisplayItemData().Clear();
|
|
|
|
// Destroying a WebRenderUserDataTable can cause destruction of other objects
|
|
// which can remove frame properties in their destructor. If we delete a frame
|
|
// property it runs the destructor of the stored object in the middle of
|
|
// updating the frame property table, so if the destruction of that object
|
|
// causes another update to the frame property table it would leave the frame
|
|
// property table in an inconsistent state. So we remove it from the table and
|
|
// then destroy it. (bug 1530657)
|
|
WebRenderUserDataTable* userDataTable =
|
|
aFrame->RemoveProperty(WebRenderUserDataProperty::Key());
|
|
if (userDataTable) {
|
|
for (auto iter = userDataTable->Iter(); !iter.Done(); iter.Next()) {
|
|
iter.UserData()->RemoveFromTable();
|
|
}
|
|
delete userDataTable;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* We keep a stack of these to represent the PaintedLayers that are
|
|
* currently available to have display items added to.
|
|
* We use a stack here because as much as possible we want to
|
|
* assign display items to existing PaintedLayers, and to the lowest
|
|
* PaintedLayer in z-order. This reduces the number of layers and
|
|
* makes it more likely a display item will be rendered to an opaque
|
|
* layer, giving us the best chance of getting subpixel AA.
|
|
*/
|
|
class PaintedLayerData {
|
|
public:
|
|
PaintedLayerData()
|
|
: mAnimatedGeometryRoot(nullptr),
|
|
mASR(nullptr),
|
|
mClipChain(nullptr),
|
|
mReferenceFrame(nullptr),
|
|
mLayer(nullptr),
|
|
mSolidColor(NS_RGBA(0, 0, 0, 0)),
|
|
mIsSolidColorInVisibleRegion(false),
|
|
mNeedComponentAlpha(false),
|
|
mForceTransparentSurface(false),
|
|
mHideAllLayersBelow(false),
|
|
mOpaqueForAnimatedGeometryRootParent(false),
|
|
mBackfaceHidden(false),
|
|
mShouldPaintOnContentSide(false),
|
|
mDTCRequiresTargetConfirmation(false),
|
|
mImage(nullptr),
|
|
mItemClip(nullptr),
|
|
mNewChildLayersIndex(-1)
|
|
#ifdef DEBUG
|
|
,
|
|
mTransformLevel(0)
|
|
#endif
|
|
{
|
|
}
|
|
|
|
PaintedLayerData(PaintedLayerData&& aRhs) = default;
|
|
|
|
~PaintedLayerData() { MOZ_ASSERT(mTransformLevel == 0); }
|
|
|
|
#ifdef MOZ_DUMP_PAINTING
|
|
/**
|
|
* Keep track of important decisions for debugging.
|
|
*/
|
|
nsCString mLog;
|
|
|
|
# define FLB_LOG_PAINTED_LAYER_DECISION(pld, ...) \
|
|
if (StaticPrefs::layers_dump_decision()) { \
|
|
pld->mLog.AppendPrintf("\t\t\t\t"); \
|
|
pld->mLog.AppendPrintf(__VA_ARGS__); \
|
|
}
|
|
#else
|
|
# define FLB_LOG_PAINTED_LAYER_DECISION(...)
|
|
#endif
|
|
|
|
/**
|
|
* Disables component alpha for |aItem| if the component alpha bounds are not
|
|
* contained in |mOpaqueRegion|. Alternatively if possible, sets
|
|
* |mNeedComponentAlpha| to true for this PaintedLayerData.
|
|
*/
|
|
bool SetupComponentAlpha(ContainerState* aState, nsPaintedDisplayItem* aItem,
|
|
const nsIntRect& aVisibleRect,
|
|
const TransformClipNode* aTransform);
|
|
|
|
/**
|
|
* Record that an item has been added to the PaintedLayer, so we
|
|
* need to update our regions.
|
|
* @param aVisibleRect the area of the item that's visible
|
|
* @param aSolidColor if non-null, the visible area of the item is
|
|
* a constant color given by *aSolidColor
|
|
*/
|
|
void Accumulate(ContainerState* aState, nsPaintedDisplayItem* aItem,
|
|
const nsIntRect& aVisibleRect, const nsRect& aContentRect,
|
|
const DisplayItemClip& aClip, LayerState aLayerState,
|
|
nsDisplayList* aList, DisplayItemEntryType aType,
|
|
nsTArray<size_t>& aOpacityIndices,
|
|
const RefPtr<TransformClipNode>& aTransform);
|
|
|
|
UniquePtr<InactiveLayerData> CreateInactiveLayerData(
|
|
ContainerState* aState, nsPaintedDisplayItem* aItem,
|
|
DisplayItemData* aData);
|
|
|
|
/**
|
|
* Updates the status of |mTransform| and |aOpacityIndices|, based on |aType|.
|
|
*/
|
|
void UpdateEffectStatus(DisplayItemEntryType aType,
|
|
nsTArray<size_t>& aOpacityIndices);
|
|
|
|
AnimatedGeometryRoot* GetAnimatedGeometryRoot() {
|
|
return mAnimatedGeometryRoot;
|
|
}
|
|
|
|
/**
|
|
* A region including the horizontal pan, vertical pan, and no action regions.
|
|
*/
|
|
nsRegion CombinedTouchActionRegion();
|
|
|
|
/**
|
|
* Add the given hit test info to the hit regions for this PaintedLayer.
|
|
*/
|
|
void AccumulateHitTestItem(ContainerState* aState, nsDisplayItem* aItem,
|
|
const DisplayItemClip& aClip,
|
|
TransformClipNode* aTransform);
|
|
|
|
void HitRegionsUpdated();
|
|
|
|
/**
|
|
* If this represents only a nsDisplayImage, and the image type supports being
|
|
* optimized to an ImageLayer, returns true.
|
|
*/
|
|
bool CanOptimizeToImageLayer(nsDisplayListBuilder* aBuilder);
|
|
|
|
/**
|
|
* If this represents only a nsDisplayImage, and the image type supports being
|
|
* optimized to an ImageLayer, returns an ImageContainer for the underlying
|
|
* image if one is available.
|
|
*/
|
|
already_AddRefed<ImageContainer> GetContainerForImageLayer(
|
|
nsDisplayListBuilder* aBuilder);
|
|
|
|
bool VisibleAboveRegionIntersects(const nsIntRegion& aRegion) const {
|
|
return !mVisibleAboveRegion.Intersect(aRegion).IsEmpty();
|
|
}
|
|
bool VisibleRegionIntersects(const nsIntRegion& aRegion) const {
|
|
return !mVisibleRegion.Intersect(aRegion).IsEmpty();
|
|
}
|
|
|
|
/**
|
|
* The owning ContainerState that created this PaintedLayerData.
|
|
*/
|
|
ContainerState* mState;
|
|
|
|
/**
|
|
* The region of visible content in the layer, relative to the
|
|
* container layer (which is at the snapped top-left of the display
|
|
* list reference frame).
|
|
*/
|
|
nsIntRegion mVisibleRegion;
|
|
/**
|
|
* The region of visible content in the layer that is opaque.
|
|
* Same coordinate system as mVisibleRegion.
|
|
*/
|
|
nsIntRegion mOpaqueRegion;
|
|
/**
|
|
* The definitely-hit region for this PaintedLayer.
|
|
*/
|
|
nsRegion mHitRegion;
|
|
/**
|
|
* The maybe-hit region for this PaintedLayer.
|
|
*/
|
|
nsRegion mMaybeHitRegion;
|
|
/**
|
|
* The dispatch-to-content hit region for this PaintedLayer.
|
|
*/
|
|
nsRegion mDispatchToContentHitRegion;
|
|
/**
|
|
* The region for this PaintedLayer that is sensitive to events
|
|
* but disallows panning and zooming. This is an approximation
|
|
* and any deviation from the true region will be part of the
|
|
* mDispatchToContentHitRegion.
|
|
*/
|
|
nsRegion mNoActionRegion;
|
|
/**
|
|
* The region for this PaintedLayer that is sensitive to events and
|
|
* allows horizontal panning but not zooming. This is an approximation
|
|
* and any deviation from the true region will be part of the
|
|
* mDispatchToContentHitRegion.
|
|
*/
|
|
nsRegion mHorizontalPanRegion;
|
|
/**
|
|
* The region for this PaintedLayer that is sensitive to events and
|
|
* allows vertical panning but not zooming. This is an approximation
|
|
* and any deviation from the true region will be part of the
|
|
* mDispatchToContentHitRegion.
|
|
*/
|
|
nsRegion mVerticalPanRegion;
|
|
|
|
bool mCollapsedTouchActions = false;
|
|
/**
|
|
* Scaled versions of the bounds of mHitRegion and mMaybeHitRegion.
|
|
* We store these because FindPaintedLayerFor() needs to consume them
|
|
* in this form, and it's a hot code path so we don't want to scale
|
|
* them inside that function.
|
|
*/
|
|
nsIntRect mScaledHitRegionBounds;
|
|
nsIntRect mScaledMaybeHitRegionBounds;
|
|
/**
|
|
* The "active scrolled root" for all content in the layer. Must
|
|
* be non-null; all content in a PaintedLayer must have the same
|
|
* active scrolled root.
|
|
*/
|
|
AnimatedGeometryRoot* mAnimatedGeometryRoot;
|
|
const ActiveScrolledRoot* mASR;
|
|
/**
|
|
* The chain of clips that should apply to this layer.
|
|
*/
|
|
const DisplayItemClipChain* mClipChain;
|
|
/**
|
|
* The offset between mAnimatedGeometryRoot and the reference frame.
|
|
*/
|
|
nsPoint mAnimatedGeometryRootOffset;
|
|
/**
|
|
* If non-null, the frame from which we'll extract "fixed positioning"
|
|
* metadata for this layer. This can be a position:fixed frame or a viewport
|
|
* frame; the latter case is used for background-attachment:fixed content.
|
|
*/
|
|
const nsIFrame* mReferenceFrame;
|
|
PaintedLayer* mLayer;
|
|
/**
|
|
* If mIsSolidColorInVisibleRegion is true, this is the color of the visible
|
|
* region.
|
|
*/
|
|
nscolor mSolidColor;
|
|
/**
|
|
* True if every pixel in mVisibleRegion will have color mSolidColor.
|
|
*/
|
|
bool mIsSolidColorInVisibleRegion;
|
|
/**
|
|
* True if there is any text visible in the layer that's over
|
|
* transparent pixels in the layer.
|
|
*/
|
|
bool mNeedComponentAlpha;
|
|
/**
|
|
* Set if the layer should be treated as transparent, even if its entire
|
|
* area is covered by opaque display items. For example, this needs to
|
|
* be set if something is going to "punch holes" in the layer by clearing
|
|
* part of its surface.
|
|
*/
|
|
bool mForceTransparentSurface;
|
|
/**
|
|
* Set if all layers below this PaintedLayer should be hidden.
|
|
*/
|
|
bool mHideAllLayersBelow;
|
|
/**
|
|
* Set if the opaque region for this layer can be applied to the parent
|
|
* animated geometry root of this layer's animated geometry root.
|
|
* We set this when a PaintedLayer's animated geometry root is a scrollframe
|
|
* and the PaintedLayer completely fills the displayport of the scrollframe.
|
|
*/
|
|
bool mOpaqueForAnimatedGeometryRootParent;
|
|
/**
|
|
* Set if the backface of this region is hidden to the user.
|
|
* Content that backface is hidden should not be draw on the layer
|
|
* with visible backface.
|
|
*/
|
|
bool mBackfaceHidden;
|
|
/**
|
|
* Set if it is better to render this layer on the content process, for
|
|
* example if it contains native theme widgets.
|
|
*/
|
|
bool mShouldPaintOnContentSide;
|
|
/**
|
|
* Set to true if events targeting the dispatch-to-content region
|
|
* require target confirmation.
|
|
* See CompositorHitTestFlags::eRequiresTargetConfirmation and
|
|
* EventRegions::mDTCRequiresTargetConfirmation.
|
|
*/
|
|
bool mDTCRequiresTargetConfirmation;
|
|
/**
|
|
* Stores the pointer to the nsDisplayImage if we want to
|
|
* convert this to an ImageLayer.
|
|
*/
|
|
nsDisplayImageContainer* mImage;
|
|
/**
|
|
* Stores the clip that we need to apply to the image or, if there is no
|
|
* image, a clip for SOME item in the layer. There is no guarantee which
|
|
* item's clip will be stored here and mItemClip should not be used to clip
|
|
* the whole layer - only some part of the clip should be used, as determined
|
|
* by PaintedDisplayItemLayerUserData::GetCommonClipCount() - which may even
|
|
* be no part at all.
|
|
*/
|
|
const DisplayItemClip* mItemClip;
|
|
/**
|
|
* Index of this layer in mNewChildLayers.
|
|
*/
|
|
int32_t mNewChildLayersIndex;
|
|
/**
|
|
* The region of visible content above the layer and below the
|
|
* next PaintedLayerData currently in the stack, if any.
|
|
* This is a conservative approximation: it contains the true region.
|
|
*/
|
|
nsIntRegion mVisibleAboveRegion;
|
|
/**
|
|
* All the display items that have been assigned to this painted layer.
|
|
* These items get added by Accumulate().
|
|
*/
|
|
std::vector<AssignedDisplayItem> mAssignedDisplayItems;
|
|
|
|
#ifdef DEBUG
|
|
/**
|
|
* Tracks the level of transform to ensure balanced PUSH/POP markers.
|
|
*/
|
|
int mTransformLevel;
|
|
#endif
|
|
};
|
|
|
|
struct NewLayerEntry {
|
|
NewLayerEntry()
|
|
: mAnimatedGeometryRoot(nullptr),
|
|
mASR(nullptr),
|
|
mClipChain(nullptr),
|
|
mScrollMetadataASR(nullptr),
|
|
mLayerContentsVisibleRect(0, 0, -1, -1),
|
|
mLayerState(LayerState::LAYER_INACTIVE),
|
|
mHideAllLayersBelow(false),
|
|
mOpaqueForAnimatedGeometryRootParent(false),
|
|
mPropagateComponentAlphaFlattening(true),
|
|
mUntransformedVisibleRegion(false),
|
|
mIsFixedToRootScrollFrame(false) {}
|
|
// mLayer is null if the previous entry is for a PaintedLayer that hasn't
|
|
// been optimized to some other form (yet).
|
|
RefPtr<Layer> mLayer;
|
|
AnimatedGeometryRoot* mAnimatedGeometryRoot;
|
|
const ActiveScrolledRoot* mASR;
|
|
const DisplayItemClipChain* mClipChain;
|
|
const ActiveScrolledRoot* mScrollMetadataASR;
|
|
// If non-null, this ScrollMetadata is set to the be the first ScrollMetadata
|
|
// on the layer.
|
|
UniquePtr<ScrollMetadata> mBaseScrollMetadata;
|
|
// The following are only used for retained layers (for occlusion
|
|
// culling of those layers). These regions are all relative to the
|
|
// container reference frame.
|
|
nsIntRegion mVisibleRegion;
|
|
nsIntRegion mOpaqueRegion;
|
|
// This rect is in the layer's own coordinate space. The computed visible
|
|
// region for the layer cannot extend beyond this rect.
|
|
nsIntRect mLayerContentsVisibleRect;
|
|
LayerState mLayerState;
|
|
bool mHideAllLayersBelow;
|
|
// When mOpaqueForAnimatedGeometryRootParent is true, the opaque region of
|
|
// this layer is opaque in the same position even subject to the animation of
|
|
// geometry of mAnimatedGeometryRoot. For example when mAnimatedGeometryRoot
|
|
// is a scrolled frame and the scrolled content is opaque everywhere in the
|
|
// displayport, we can set this flag.
|
|
// When this flag is set, we can treat this opaque region as covering
|
|
// content whose animated geometry root is the animated geometry root for
|
|
// mAnimatedGeometryRoot->GetParent().
|
|
bool mOpaqueForAnimatedGeometryRootParent;
|
|
|
|
// If true, then the content flags for this layer should contribute
|
|
// to our decision to flatten component alpha layers, false otherwise.
|
|
bool mPropagateComponentAlphaFlattening;
|
|
// mVisibleRegion is relative to the associated frame before
|
|
// transform.
|
|
bool mUntransformedVisibleRegion;
|
|
bool mIsFixedToRootScrollFrame;
|
|
};
|
|
|
|
class PaintedLayerDataTree;
|
|
|
|
/**
|
|
* This is tree node type for PaintedLayerDataTree.
|
|
* Each node corresponds to a different animated geometry root, and contains
|
|
* a stack of PaintedLayerDatas, in bottom-to-top order.
|
|
* There is at most one node per animated geometry root. The ancestor and
|
|
* descendant relations in PaintedLayerDataTree tree mirror those in the frame
|
|
* tree.
|
|
* Each node can have clip that describes the potential extents that items in
|
|
* this node can cover. If mHasClip is false, it means that the node's contents
|
|
* can move anywhere.
|
|
* Testing against the clip instead of the node's actual contents has the
|
|
* advantage that the node's contents can move or animate without affecting
|
|
* content in other nodes. So we don't need to re-layerize during animations
|
|
* (sync or async), and during async animations everything is guaranteed to
|
|
* look correct.
|
|
* The contents of a node's PaintedLayerData stack all share the node's
|
|
* animated geometry root. The child nodes are on top of the PaintedLayerData
|
|
* stack, in z-order, and the clip rects of the child nodes are allowed to
|
|
* intersect with the visible region or visible above region of their parent
|
|
* node's PaintedLayerDatas.
|
|
*/
|
|
class PaintedLayerDataNode {
|
|
public:
|
|
PaintedLayerDataNode(PaintedLayerDataTree& aTree,
|
|
PaintedLayerDataNode* aParent,
|
|
AnimatedGeometryRoot* aAnimatedGeometryRoot);
|
|
~PaintedLayerDataNode();
|
|
|
|
AnimatedGeometryRoot* GetAnimatedGeometryRoot() const {
|
|
return mAnimatedGeometryRoot;
|
|
}
|
|
|
|
/**
|
|
* Whether this node's contents can potentially intersect aRect.
|
|
* aRect is in our tree's ContainerState's coordinate space.
|
|
*/
|
|
bool Intersects(const nsIntRect& aRect) const {
|
|
return !mHasClip || mClipRect.Intersects(aRect);
|
|
}
|
|
|
|
/**
|
|
* Create a PaintedLayerDataNode for aAnimatedGeometryRoot, add it to our
|
|
* children, and return it.
|
|
*/
|
|
PaintedLayerDataNode* AddChildNodeFor(
|
|
AnimatedGeometryRoot* aAnimatedGeometryRoot);
|
|
|
|
/**
|
|
* Find a PaintedLayerData in our mPaintedLayerDataStack that aItem can be
|
|
* added to. Creates a new PaintedLayerData by calling
|
|
* aNewPaintedLayerCallback if necessary.
|
|
*/
|
|
template <typename NewPaintedLayerCallbackType>
|
|
PaintedLayerData* FindPaintedLayerFor(
|
|
const nsIntRect& aVisibleRect, bool aBackfaceHidden,
|
|
const ActiveScrolledRoot* aASR, const DisplayItemClipChain* aClipChain,
|
|
NewPaintedLayerCallbackType aNewPaintedLayerCallback);
|
|
|
|
/**
|
|
* Find an opaque background color for aRegion. Pulls a color from the parent
|
|
* geometry root if appropriate, but only if that color is present underneath
|
|
* the whole clip of this node, so that this node's contents can animate or
|
|
* move (possibly async) without having to change the background color.
|
|
* @param aUnderIndex Searching will start in mPaintedLayerDataStack right
|
|
* below aUnderIndex.
|
|
*/
|
|
enum { ABOVE_TOP = -1 };
|
|
nscolor FindOpaqueBackgroundColor(const nsIntRegion& aRegion,
|
|
int32_t aUnderIndex = ABOVE_TOP) const;
|
|
/**
|
|
* Same as FindOpaqueBackgroundColor, but only returns a color if absolutely
|
|
* nothing is in between, so that it can be used for a layer that can move
|
|
* anywhere inside our clip.
|
|
*/
|
|
nscolor FindOpaqueBackgroundColorCoveringEverything() const;
|
|
|
|
/**
|
|
* Adds aRect to this node's top PaintedLayerData's mVisibleAboveRegion,
|
|
* or mVisibleAboveBackgroundRegion if mPaintedLayerDataStack is empty.
|
|
*/
|
|
void AddToVisibleAboveRegion(const nsIntRect& aRect);
|
|
/**
|
|
* Call this if all of our existing content can potentially be covered, so
|
|
* nothing can merge with it and all new content needs to create new items
|
|
* on top. This will finish all of our children and pop our whole
|
|
* mPaintedLayerDataStack.
|
|
*/
|
|
void SetAllDrawingAbove();
|
|
|
|
/**
|
|
* Finish this node: Finish all children, finish our PaintedLayer contents,
|
|
* and (if requested) adjust our parent's visible above region to include
|
|
* our clip.
|
|
*/
|
|
void Finish(bool aParentNeedsAccurateVisibleAboveRegion);
|
|
|
|
/**
|
|
* Finish any children that intersect aRect.
|
|
*/
|
|
void FinishChildrenIntersecting(const nsIntRect& aRect);
|
|
|
|
/**
|
|
* Finish all children.
|
|
*/
|
|
void FinishAllChildren() { FinishAllChildren(true); }
|
|
|
|
protected:
|
|
/**
|
|
* Finish all items in mPaintedLayerDataStack and clear the stack.
|
|
*/
|
|
void PopAllPaintedLayerData();
|
|
/**
|
|
* Finish all of our child nodes, but don't touch mPaintedLayerDataStack.
|
|
*/
|
|
void FinishAllChildren(bool aThisNodeNeedsAccurateVisibleAboveRegion);
|
|
/**
|
|
* Pass off opaque background color searching to our parent node, if we have
|
|
* one.
|
|
*/
|
|
nscolor FindOpaqueBackgroundColorInParentNode() const;
|
|
|
|
PaintedLayerDataTree& mTree;
|
|
PaintedLayerDataNode* mParent;
|
|
AnimatedGeometryRoot* mAnimatedGeometryRoot;
|
|
|
|
/**
|
|
* Our contents: a PaintedLayerData stack and our child nodes.
|
|
*/
|
|
AutoTArray<PaintedLayerData, 3> mPaintedLayerDataStack;
|
|
|
|
/**
|
|
* UniquePtr is used here in the sense of "unique ownership", i.e. there is
|
|
* only one owner. Not in the sense of "this is the only pointer to the
|
|
* node": There are two other, non-owning, pointers to our child nodes: The
|
|
* node's respective children point to their parent node with their mParent
|
|
* pointer, and the tree keeps a map of animated geometry root to node in its
|
|
* mNodes member. These outside pointers are the reason that mChildren isn't
|
|
* just an nsTArray<PaintedLayerDataNode> (since the pointers would become
|
|
* invalid whenever the array expands its capacity).
|
|
*/
|
|
nsTArray<UniquePtr<PaintedLayerDataNode>> mChildren;
|
|
|
|
/**
|
|
* The region that's covered between our "background" and the bottom of
|
|
* mPaintedLayerDataStack. This is used to indicate whether we can pull
|
|
* a background color from our parent node. If mVisibleAboveBackgroundRegion
|
|
* should be considered infinite, mAllDrawingAboveBackground will be true and
|
|
* the value of mVisibleAboveBackgroundRegion will be meaningless.
|
|
*/
|
|
nsIntRegion mVisibleAboveBackgroundRegion;
|
|
|
|
/**
|
|
* Our clip, if we have any. If not, that means we can move anywhere, and
|
|
* mHasClip will be false and mClipRect will be meaningless.
|
|
*/
|
|
nsIntRect mClipRect;
|
|
bool mHasClip;
|
|
|
|
/**
|
|
* Whether mVisibleAboveBackgroundRegion should be considered infinite.
|
|
*/
|
|
bool mAllDrawingAboveBackground;
|
|
};
|
|
|
|
class ContainerState;
|
|
|
|
/**
|
|
* A tree of PaintedLayerDataNodes. At any point in time, the tree only
|
|
* contains nodes for animated geometry roots that new items can potentially
|
|
* merge into. Any time content is added on top that overlaps existing things
|
|
* in such a way that we no longer want to merge new items with some existing
|
|
* content, that existing content gets "finished".
|
|
* The public-facing methods of this class are FindPaintedLayerFor,
|
|
* AddingOwnLayer, and Finish. The other public methods are for
|
|
* PaintedLayerDataNode.
|
|
* The tree calls out to its containing ContainerState for some things.
|
|
* All coordinates / rects in the tree or the tree nodes are in the
|
|
* ContainerState's coordinate space, i.e. relative to the reference frame and
|
|
* in layer pixels.
|
|
* The clip rects of sibling nodes never overlap. This is ensured by finishing
|
|
* existing nodes before adding new ones, if this property were to be violated.
|
|
* The root tree node doesn't get finished until the ContainerState is
|
|
* finished.
|
|
* The tree's root node is always the root reference frame of the builder. We
|
|
* don't stop at the container state's mContainerAnimatedGeometryRoot because
|
|
* some of our contents can have animated geometry roots that are not
|
|
* descendants of the container's animated geometry root. Every animated
|
|
* geometry root we encounter for our contents needs to have a defined place in
|
|
* the tree.
|
|
*/
|
|
class PaintedLayerDataTree {
|
|
public:
|
|
PaintedLayerDataTree(ContainerState& aContainerState,
|
|
nscolor& aBackgroundColor)
|
|
: mContainerState(aContainerState),
|
|
mContainerUniformBackgroundColor(aBackgroundColor),
|
|
mForInactiveLayer(false) {}
|
|
|
|
~PaintedLayerDataTree() {
|
|
MOZ_ASSERT(!mRoot);
|
|
MOZ_ASSERT(mNodes.Count() == 0);
|
|
}
|
|
|
|
void InitializeForInactiveLayer(AnimatedGeometryRoot* aAnimatedGeometryRoot);
|
|
|
|
/**
|
|
* Notify our contents that some non-PaintedLayer content has been added.
|
|
* *aRect needs to be a rectangle that doesn't move with respect to
|
|
* aAnimatedGeometryRoot and that contains the added item.
|
|
* If aRect is null, the extents will be considered infinite.
|
|
* If aOutUniformBackgroundColor is non-null, it will be set to an opaque
|
|
* color that can be pulled into the background of the added content, or
|
|
* transparent if that is not possible.
|
|
*/
|
|
void AddingOwnLayer(AnimatedGeometryRoot* aAnimatedGeometryRoot,
|
|
const nsIntRect* aRect,
|
|
nscolor* aOutUniformBackgroundColor);
|
|
|
|
/**
|
|
* Find a PaintedLayerData for aItem. This can either be an existing
|
|
* PaintedLayerData from inside a node in our tree, or a new one that gets
|
|
* created by a call out to aNewPaintedLayerCallback.
|
|
*/
|
|
template <typename NewPaintedLayerCallbackType>
|
|
PaintedLayerData* FindPaintedLayerFor(
|
|
AnimatedGeometryRoot* aAnimatedGeometryRoot,
|
|
const ActiveScrolledRoot* aASR, const DisplayItemClipChain* aClipChain,
|
|
const nsIntRect& aVisibleRect, const bool aBackfaceHidden,
|
|
NewPaintedLayerCallbackType aNewPaintedLayerCallback);
|
|
|
|
/**
|
|
* Finish everything.
|
|
*/
|
|
void Finish();
|
|
|
|
/**
|
|
* Get the parent animated geometry root of aAnimatedGeometryRoot.
|
|
* That's either aAnimatedGeometryRoot's animated geometry root, or, if
|
|
* that's aAnimatedGeometryRoot itself, then it's the animated geometry
|
|
* root for aAnimatedGeometryRoot's cross-doc parent frame.
|
|
*/
|
|
AnimatedGeometryRoot* GetParentAnimatedGeometryRoot(
|
|
AnimatedGeometryRoot* aAnimatedGeometryRoot);
|
|
|
|
/**
|
|
* Whether aAnimatedGeometryRoot has an intrinsic clip that doesn't move with
|
|
* respect to aAnimatedGeometryRoot's parent animated geometry root.
|
|
* If aAnimatedGeometryRoot is a scroll frame, this will be the scroll frame's
|
|
* scroll port, otherwise there is no clip.
|
|
* This method doesn't have much to do with PaintedLayerDataTree, but this is
|
|
* where we have easy access to a display list builder, which we use to get
|
|
* the clip rect result into the right coordinate space.
|
|
*/
|
|
bool IsClippedWithRespectToParentAnimatedGeometryRoot(
|
|
AnimatedGeometryRoot* aAnimatedGeometryRoot, nsIntRect* aOutClip);
|
|
|
|
/**
|
|
* Called by PaintedLayerDataNode when it is finished, so that we can drop
|
|
* our pointers to it.
|
|
*/
|
|
void NodeWasFinished(AnimatedGeometryRoot* aAnimatedGeometryRoot);
|
|
|
|
nsDisplayListBuilder* Builder() const;
|
|
ContainerState& ContState() const { return mContainerState; }
|
|
nscolor UniformBackgroundColor() const {
|
|
return mContainerUniformBackgroundColor;
|
|
}
|
|
|
|
protected:
|
|
/**
|
|
* Finish all nodes that potentially intersect *aRect, where *aRect is a rect
|
|
* that doesn't move with respect to aAnimatedGeometryRoot.
|
|
* If aRect is null, *aRect will be considered infinite.
|
|
*/
|
|
void FinishPotentiallyIntersectingNodes(
|
|
AnimatedGeometryRoot* aAnimatedGeometryRoot, const nsIntRect* aRect);
|
|
|
|
/**
|
|
* Make sure that there is a node for aAnimatedGeometryRoot and all of its
|
|
* ancestor geometry roots. Return the node for aAnimatedGeometryRoot.
|
|
*/
|
|
PaintedLayerDataNode* EnsureNodeFor(
|
|
AnimatedGeometryRoot* aAnimatedGeometryRoot);
|
|
|
|
/**
|
|
* Find an existing node in the tree for an ancestor of aAnimatedGeometryRoot.
|
|
* *aOutAncestorChild will be set to the last ancestor that was encountered
|
|
* in the search up from aAnimatedGeometryRoot; it will be a child animated
|
|
* geometry root of the result, if neither are null.
|
|
*/
|
|
PaintedLayerDataNode* FindNodeForAncestorAnimatedGeometryRoot(
|
|
AnimatedGeometryRoot* aAnimatedGeometryRoot,
|
|
AnimatedGeometryRoot** aOutAncestorChild);
|
|
|
|
ContainerState& mContainerState;
|
|
Maybe<PaintedLayerDataNode> mRoot;
|
|
|
|
/**
|
|
* The uniform opaque color from behind this container layer, or
|
|
* NS_RGBA(0,0,0,0) if the background behind this container layer is not
|
|
* uniform and opaque. This color can be pulled into PaintedLayers that are
|
|
* directly above the background.
|
|
*/
|
|
nscolor mContainerUniformBackgroundColor;
|
|
|
|
/**
|
|
* A hash map for quick access the node belonging to a particular animated
|
|
* geometry root.
|
|
*/
|
|
nsDataHashtable<nsPtrHashKey<AnimatedGeometryRoot>, PaintedLayerDataNode*>
|
|
mNodes;
|
|
|
|
bool mForInactiveLayer;
|
|
};
|
|
|
|
/**
|
|
* This is a helper object used to build up the layer children for
|
|
* a ContainerLayer.
|
|
*/
|
|
class ContainerState {
|
|
public:
|
|
ContainerState(nsDisplayListBuilder* aBuilder, LayerManager* aManager,
|
|
FrameLayerBuilder* aLayerBuilder, nsIFrame* aContainerFrame,
|
|
nsDisplayItem* aContainerItem, const nsRect& aContainerBounds,
|
|
ContainerLayer* aContainerLayer,
|
|
const ContainerLayerParameters& aParameters,
|
|
nscolor aBackgroundColor,
|
|
const ActiveScrolledRoot* aContainerASR,
|
|
const ActiveScrolledRoot* aContainerScrollMetadataASR,
|
|
const ActiveScrolledRoot* aContainerCompositorASR)
|
|
: mBuilder(aBuilder),
|
|
mManager(aManager),
|
|
mLayerBuilder(aLayerBuilder),
|
|
mContainerFrame(aContainerFrame),
|
|
mContainerLayer(aContainerLayer),
|
|
mContainerBounds(aContainerBounds),
|
|
mContainerASR(aContainerASR),
|
|
mContainerScrollMetadataASR(aContainerScrollMetadataASR),
|
|
mContainerCompositorASR(aContainerCompositorASR),
|
|
mParameters(aParameters),
|
|
mPaintedLayerDataTree(*this, aBackgroundColor),
|
|
mLastDisplayPortAGR(nullptr),
|
|
mContainerItem(aContainerItem) {
|
|
nsPresContext* presContext = aContainerFrame->PresContext();
|
|
mAppUnitsPerDevPixel = presContext->AppUnitsPerDevPixel();
|
|
mContainerReferenceFrame = const_cast<nsIFrame*>(
|
|
aContainerItem ? aContainerItem->ReferenceFrameForChildren()
|
|
: mBuilder->FindReferenceFrameFor(mContainerFrame));
|
|
bool isAtRoot = !aContainerItem ||
|
|
(aContainerItem->Frame() == mBuilder->RootReferenceFrame());
|
|
MOZ_ASSERT(!isAtRoot ||
|
|
mContainerReferenceFrame == mBuilder->RootReferenceFrame());
|
|
mContainerAnimatedGeometryRoot =
|
|
isAtRoot ? aBuilder->GetRootAnimatedGeometryRoot()
|
|
: aContainerItem->GetAnimatedGeometryRoot();
|
|
MOZ_ASSERT(
|
|
!mBuilder->IsPaintingToWindow() ||
|
|
nsLayoutUtils::IsAncestorFrameCrossDoc(
|
|
mBuilder->RootReferenceFrame(), *mContainerAnimatedGeometryRoot));
|
|
// When AllowResidualTranslation is false, display items will be drawn
|
|
// scaled with a translation by integer pixels, so we know how the snapping
|
|
// will work.
|
|
mSnappingEnabled = aManager->IsSnappingEffectiveTransforms() &&
|
|
!mParameters.AllowResidualTranslation();
|
|
CollectOldLayers();
|
|
}
|
|
|
|
/**
|
|
* This is the method that actually walks a display list and builds
|
|
* the child layers.
|
|
*/
|
|
void ProcessDisplayItems(nsDisplayList* aList);
|
|
/**
|
|
* This finalizes all the open PaintedLayers by popping every element off
|
|
* mPaintedLayerDataStack, then sets the children of the container layer
|
|
* to be all the layers in mNewChildLayers in that order and removes any
|
|
* layers as children of the container that aren't in mNewChildLayers.
|
|
* @param aTextContentFlags if any child layer has CONTENT_COMPONENT_ALPHA,
|
|
* set *aTextContentFlags to CONTENT_COMPONENT_ALPHA
|
|
*/
|
|
void Finish(uint32_t* aTextContentFlags,
|
|
const nsIntRect& aContainerPixelBounds,
|
|
nsDisplayList* aChildItems);
|
|
|
|
nscoord GetAppUnitsPerDevPixel() { return mAppUnitsPerDevPixel; }
|
|
|
|
nsIntRect ScaleToNearestPixels(const nsRect& aRect) const {
|
|
return aRect.ScaleToNearestPixels(mParameters.mXScale, mParameters.mYScale,
|
|
mAppUnitsPerDevPixel);
|
|
}
|
|
nsIntRect ScaleToOutsidePixels(const nsRect& aRect,
|
|
bool aSnap = false) const {
|
|
if (aRect.IsEmpty()) {
|
|
return nsIntRect();
|
|
}
|
|
if (aSnap && mSnappingEnabled) {
|
|
return ScaleToNearestPixels(aRect);
|
|
}
|
|
return aRect.ScaleToOutsidePixels(mParameters.mXScale, mParameters.mYScale,
|
|
mAppUnitsPerDevPixel);
|
|
}
|
|
nsIntRect ScaleToInsidePixels(const nsRect& aRect, bool aSnap = false) const {
|
|
if (aSnap && mSnappingEnabled) {
|
|
return ScaleToNearestPixels(aRect);
|
|
}
|
|
return aRect.ScaleToInsidePixels(mParameters.mXScale, mParameters.mYScale,
|
|
mAppUnitsPerDevPixel);
|
|
}
|
|
nsIntRegion ScaleRegionToNearestPixels(const nsRegion& aRegion) const {
|
|
return aRegion.ScaleToNearestPixels(
|
|
mParameters.mXScale, mParameters.mYScale, mAppUnitsPerDevPixel);
|
|
}
|
|
nsIntRegion ScaleRegionToInsidePixels(const nsRegion& aRegion,
|
|
bool aSnap = false) const {
|
|
if (aSnap && mSnappingEnabled) {
|
|
return ScaleRegionToNearestPixels(aRegion);
|
|
}
|
|
return aRegion.ScaleToInsidePixels(mParameters.mXScale, mParameters.mYScale,
|
|
mAppUnitsPerDevPixel);
|
|
}
|
|
|
|
nsIntRegion ScaleRegionToOutsidePixels(const nsRegion& aRegion,
|
|
bool aSnap = false) const {
|
|
if (aRegion.IsEmpty()) {
|
|
return nsIntRegion();
|
|
}
|
|
if (aSnap && mSnappingEnabled) {
|
|
return ScaleRegionToNearestPixels(aRegion);
|
|
}
|
|
return aRegion.ScaleToOutsidePixels(
|
|
mParameters.mXScale, mParameters.mYScale, mAppUnitsPerDevPixel);
|
|
}
|
|
|
|
nsIFrame* GetContainerFrame() const { return mContainerFrame; }
|
|
nsDisplayListBuilder* Builder() const { return mBuilder; }
|
|
FrameLayerBuilder* LayerBuilder() const { return mLayerBuilder; }
|
|
|
|
/**
|
|
* Check if we are currently inside an inactive layer.
|
|
*/
|
|
bool IsInInactiveLayer() const {
|
|
return mLayerBuilder->GetContainingPaintedLayerData();
|
|
}
|
|
|
|
/**
|
|
* Sets aOuterVisibleRegion as aLayer's visible region.
|
|
* @param aOuterVisibleRegion
|
|
* is in the coordinate space of the container reference frame.
|
|
* @param aLayerContentsVisibleRect, if non-null, is in the layer's own
|
|
* coordinate system.
|
|
* @param aOuterUntransformed is true if the given aOuterVisibleRegion
|
|
* is already untransformed with the matrix of the layer.
|
|
*/
|
|
void SetOuterVisibleRegionForLayer(
|
|
Layer* aLayer, const nsIntRegion& aOuterVisibleRegion,
|
|
const nsIntRect* aLayerContentsVisibleRect = nullptr,
|
|
bool aOuterUntransformed = false) const;
|
|
|
|
/**
|
|
* Try to determine whether the PaintedLayer aData has a single opaque color
|
|
* covering aRect. If successful, return that color, otherwise return
|
|
* NS_RGBA(0,0,0,0).
|
|
* If aRect turns out not to intersect any content in the layer,
|
|
* *aOutIntersectsLayer will be set to false.
|
|
*/
|
|
nscolor FindOpaqueBackgroundColorInLayer(const PaintedLayerData* aData,
|
|
const nsIntRect& aRect,
|
|
bool* aOutIntersectsLayer) const;
|
|
|
|
/**
|
|
* Indicate that we are done adding items to the PaintedLayer represented by
|
|
* aData. Make sure that a real PaintedLayer exists for it, and set the final
|
|
* visible region and opaque-content.
|
|
*/
|
|
template <typename FindOpaqueBackgroundColorCallbackType>
|
|
void FinishPaintedLayerData(
|
|
PaintedLayerData& aData,
|
|
FindOpaqueBackgroundColorCallbackType aFindOpaqueBackgroundColor);
|
|
|
|
protected:
|
|
friend class PaintedLayerData;
|
|
friend class FLBDisplayListIterator;
|
|
|
|
LayerManager::PaintedLayerCreationHint GetLayerCreationHint(
|
|
AnimatedGeometryRoot* aAnimatedGeometryRoot);
|
|
|
|
/**
|
|
* Creates a new PaintedLayer and sets up the transform on the PaintedLayer
|
|
* to account for scrolling.
|
|
*/
|
|
already_AddRefed<PaintedLayer> CreatePaintedLayer(PaintedLayerData* aData);
|
|
|
|
/**
|
|
* Find a PaintedLayer for recycling, recycle it and prepare it for use, or
|
|
* return null if no suitable layer was found.
|
|
*/
|
|
already_AddRefed<PaintedLayer> AttemptToRecyclePaintedLayer(
|
|
AnimatedGeometryRoot* aAnimatedGeometryRoot, nsDisplayItem* aItem,
|
|
const nsPoint& aTopLeft, const nsIFrame* aReferenceFrame);
|
|
/**
|
|
* Recycle aLayer and do any necessary invalidation.
|
|
*/
|
|
PaintedDisplayItemLayerUserData* RecyclePaintedLayer(
|
|
PaintedLayer* aLayer, AnimatedGeometryRoot* aAnimatedGeometryRoot,
|
|
bool& didResetScrollPositionForLayerPixelAlignment);
|
|
|
|
/**
|
|
* Perform the last step of CreatePaintedLayer / AttemptToRecyclePaintedLayer:
|
|
* Initialize aData, set up the layer's transform for scrolling, and
|
|
* invalidate the layer for layer pixel alignment changes if necessary.
|
|
*/
|
|
void PreparePaintedLayerForUse(
|
|
PaintedLayer* aLayer, PaintedDisplayItemLayerUserData* aData,
|
|
AnimatedGeometryRoot* aAnimatedGeometryRoot,
|
|
const nsIFrame* aReferenceFrame, const nsPoint& aTopLeft,
|
|
bool aDidResetScrollPositionForLayerPixelAlignment);
|
|
|
|
/**
|
|
* Attempt to prepare an ImageLayer based upon the provided PaintedLayerData.
|
|
* Returns nullptr on failure.
|
|
*/
|
|
already_AddRefed<Layer> PrepareImageLayer(PaintedLayerData* aData);
|
|
|
|
/**
|
|
* Attempt to prepare a ColorLayer based upon the provided PaintedLayerData.
|
|
* Returns nullptr on failure.
|
|
*/
|
|
already_AddRefed<Layer> PrepareColorLayer(PaintedLayerData* aData);
|
|
|
|
/**
|
|
* Grab the next recyclable ColorLayer, or create one if there are no
|
|
* more recyclable ColorLayers.
|
|
*/
|
|
already_AddRefed<ColorLayer> CreateOrRecycleColorLayer(
|
|
PaintedLayer* aPainted);
|
|
/**
|
|
* Grab the next recyclable ImageLayer, or create one if there are no
|
|
* more recyclable ImageLayers.
|
|
*/
|
|
already_AddRefed<ImageLayer> CreateOrRecycleImageLayer(
|
|
PaintedLayer* aPainted);
|
|
/**
|
|
* Grab a recyclable ImageLayer for use as a mask layer for aLayer (that is a
|
|
* mask layer which has been used for aLayer before), or create one if such
|
|
* a layer doesn't exist.
|
|
*
|
|
* Since mask layers can exist either on the layer directly, or as a side-
|
|
* attachment to FrameMetrics (for ancestor scrollframe clips), we key the
|
|
* recycle operation on both the originating layer and the mask layer's
|
|
* index in the layer, if any.
|
|
*/
|
|
struct MaskLayerKey;
|
|
template <typename UserData>
|
|
already_AddRefed<ImageLayer> CreateOrRecycleMaskImageLayerFor(
|
|
const MaskLayerKey& aKey, UserData* (*aGetUserData)(Layer* aLayer),
|
|
void (*aSetDefaultUserData)(Layer* aLayer));
|
|
/**
|
|
* Grabs all PaintedLayers and ColorLayers from the ContainerLayer and makes
|
|
* them available for recycling.
|
|
*/
|
|
void CollectOldLayers();
|
|
/**
|
|
* If aItem used to belong to a PaintedLayer, invalidates the area of
|
|
* aItem in that layer. If aNewLayer is a PaintedLayer, invalidates the area
|
|
* of aItem in that layer.
|
|
*/
|
|
void InvalidateForLayerChange(nsDisplayItem* aItem, PaintedLayer* aNewLayer,
|
|
DisplayItemData* aData);
|
|
/**
|
|
* Returns true if aItem's opaque area (in aOpaque) covers the entire
|
|
* scrollable area of its presshell.
|
|
*/
|
|
bool ItemCoversScrollableArea(nsDisplayItem* aItem, const nsRegion& aOpaque);
|
|
|
|
/**
|
|
* Set ScrollMetadata and scroll-induced clipping on aEntry's layer.
|
|
*/
|
|
void SetupScrollingMetadata(NewLayerEntry* aEntry);
|
|
|
|
/**
|
|
* Applies occlusion culling.
|
|
* For each layer in mNewChildLayers, remove from its visible region the
|
|
* opaque regions of the layers at higher z-index, but only if they have
|
|
* the same animated geometry root and fixed-pos frame ancestor.
|
|
* The opaque region for the child layers that share the same animated
|
|
* geometry root as the container frame is returned in
|
|
* *aOpaqueRegionForContainer.
|
|
*
|
|
* Also sets scroll metadata on the layers.
|
|
*/
|
|
void PostprocessRetainedLayers(nsIntRegion* aOpaqueRegionForContainer);
|
|
|
|
/**
|
|
* Computes the snapped opaque area of aItem. Sets aList's opaque flag
|
|
* if it covers the entire list bounds. Sets *aHideAllLayersBelow to true
|
|
* this item covers the entire viewport so that all layers below are
|
|
* permanently invisible.
|
|
*/
|
|
nsIntRegion ComputeOpaqueRect(nsDisplayItem* aItem,
|
|
AnimatedGeometryRoot* aAnimatedGeometryRoot,
|
|
const ActiveScrolledRoot* aASR,
|
|
const DisplayItemClip& aClip,
|
|
nsDisplayList* aList, bool* aHideAllLayersBelow,
|
|
bool* aOpaqueForAnimatedGeometryRootParent);
|
|
|
|
/**
|
|
* Fills a PaintedLayerData object that is initialized for a layer that the
|
|
* current item will be assigned to. Also creates mNewChildLayers entries.
|
|
* @param aData The PaintedLayerData that will be filled.
|
|
* @param aVisibleRect The visible rect of the item.
|
|
* @param aAnimatedGeometryRoot The item's animated geometry root.
|
|
* @param aASR The active scrolled root that moves this
|
|
* PaintedLayer.
|
|
* @param aClipChain The clip chain that the compositor needs to
|
|
* apply to this layer.
|
|
* @param aScrollMetadataASR The leaf ASR for which scroll metadata needs
|
|
* to be set on the layer, because either the layer itself or its scrolled
|
|
* clip need to move with that ASR.
|
|
* @param aTopLeft The offset between aAnimatedGeometryRoot and
|
|
* the reference frame.
|
|
* @param aReferenceFrame The reference frame for the item.
|
|
* @param aBackfaceHidden The backface visibility for the item frame.
|
|
*/
|
|
void NewPaintedLayerData(
|
|
PaintedLayerData* aData, AnimatedGeometryRoot* aAnimatedGeometryRoot,
|
|
const ActiveScrolledRoot* aASR, const DisplayItemClipChain* aClipChain,
|
|
const ActiveScrolledRoot* aScrollMetadataASR, const nsPoint& aTopLeft,
|
|
const nsIFrame* aReferenceFrame, const bool aBackfaceHidden);
|
|
|
|
/* Build a mask layer to represent the clipping region. Will return null if
|
|
* there is no clipping specified or a mask layer cannot be built.
|
|
* Builds an ImageLayer for the appropriate backend; the mask is relative to
|
|
* aLayer's visible region.
|
|
* aLayer is the layer to be clipped.
|
|
* relative to the container reference frame
|
|
* aRoundedRectClipCount is used when building mask layers for PaintedLayers,
|
|
*/
|
|
void SetupMaskLayer(Layer* aLayer, const DisplayItemClip& aClip);
|
|
|
|
/**
|
|
* If |aClip| has rounded corners, create a mask layer for them, and
|
|
* add it to |aLayer|'s ancestor mask layers, returning an index into
|
|
* the array of ancestor mask layers. Returns an empty Maybe if
|
|
* |aClip| does not have rounded corners, or if no mask layer could
|
|
* be created.
|
|
*/
|
|
Maybe<size_t> SetupMaskLayerForScrolledClip(Layer* aLayer,
|
|
const DisplayItemClip& aClip);
|
|
|
|
/**
|
|
* Create/find a mask layer with suitable size for aMaskItem to paint
|
|
* css-positioned-masking onto.
|
|
*/
|
|
void SetupMaskLayerForCSSMask(Layer* aLayer,
|
|
nsDisplayMasksAndClipPaths* aMaskItem);
|
|
|
|
already_AddRefed<Layer> CreateMaskLayer(
|
|
Layer* aLayer, const DisplayItemClip& aClip,
|
|
const Maybe<size_t>& aForAncestorMaskLayer);
|
|
|
|
/**
|
|
* Get the display port for an AGR.
|
|
* The result would be cached for later reusing.
|
|
*/
|
|
nsRect GetDisplayPortForAnimatedGeometryRoot(
|
|
AnimatedGeometryRoot* aAnimatedGeometryRoot);
|
|
|
|
nsDisplayListBuilder* mBuilder;
|
|
LayerManager* mManager;
|
|
FrameLayerBuilder* mLayerBuilder;
|
|
nsIFrame* mContainerFrame;
|
|
nsIFrame* mContainerReferenceFrame;
|
|
AnimatedGeometryRoot* mContainerAnimatedGeometryRoot;
|
|
ContainerLayer* mContainerLayer;
|
|
nsRect mContainerBounds;
|
|
|
|
// Due to the way we store scroll annotations in the layer tree, we need to
|
|
// keep track of three (possibly different) ASRs here.
|
|
// mContainerASR is the ASR of the container display item that this
|
|
// ContainerState was created for.
|
|
// mContainerScrollMetadataASR is the ASR of the leafmost scroll metadata
|
|
// that's in effect on mContainerLayer.
|
|
// mContainerCompositorASR is the ASR that mContainerLayer moves with on
|
|
// the compositor / APZ side, taking into account both the scroll meta data
|
|
// and the fixed position annotation on itself and its ancestors.
|
|
const ActiveScrolledRoot* mContainerASR;
|
|
const ActiveScrolledRoot* mContainerScrollMetadataASR;
|
|
const ActiveScrolledRoot* mContainerCompositorASR;
|
|
#ifdef DEBUG
|
|
nsRect mAccumulatedChildBounds;
|
|
#endif
|
|
ContainerLayerParameters mParameters;
|
|
/**
|
|
* The region of PaintedLayers that should be invalidated every time
|
|
* we recycle one.
|
|
*/
|
|
nsIntRegion mInvalidPaintedContent;
|
|
PaintedLayerDataTree mPaintedLayerDataTree;
|
|
/**
|
|
* We collect the list of children in here. During ProcessDisplayItems,
|
|
* the layers in this array either have mContainerLayer as their parent,
|
|
* or no parent.
|
|
* PaintedLayers have two entries in this array: the second one is used only
|
|
* if the PaintedLayer is optimized away to a ColorLayer or ImageLayer. It's
|
|
* essential that this array is only appended to, since PaintedLayerData
|
|
* records the index of its PaintedLayer in this array.
|
|
*/
|
|
typedef AutoTArray<NewLayerEntry, 1> AutoLayersArray;
|
|
AutoLayersArray mNewChildLayers;
|
|
nsTHashtable<nsRefPtrHashKey<PaintedLayer>>
|
|
mPaintedLayersAvailableForRecycling;
|
|
nscoord mAppUnitsPerDevPixel;
|
|
bool mSnappingEnabled;
|
|
|
|
struct MaskLayerKey {
|
|
MaskLayerKey() : mLayer(nullptr) {}
|
|
MaskLayerKey(Layer* aLayer, const Maybe<size_t>& aAncestorIndex)
|
|
: mLayer(aLayer), mAncestorIndex(aAncestorIndex) {}
|
|
|
|
PLDHashNumber Hash() const {
|
|
// Hash the layer and add the layer index to the hash.
|
|
return (NS_PTR_TO_UINT32(mLayer) >> 2) +
|
|
(mAncestorIndex ? (*mAncestorIndex + 1) : 0);
|
|
}
|
|
bool operator==(const MaskLayerKey& aOther) const {
|
|
return mLayer == aOther.mLayer && mAncestorIndex == aOther.mAncestorIndex;
|
|
}
|
|
|
|
Layer* mLayer;
|
|
Maybe<size_t> mAncestorIndex;
|
|
};
|
|
|
|
nsDataHashtable<nsGenericHashKey<MaskLayerKey>, RefPtr<ImageLayer>>
|
|
mRecycledMaskImageLayers;
|
|
// Keep display port of AGR to avoid wasting time on doing the same
|
|
// thing repeatly.
|
|
AnimatedGeometryRoot* mLastDisplayPortAGR;
|
|
nsRect mLastDisplayPortRect;
|
|
|
|
nsDisplayItem* mContainerItem;
|
|
|
|
// Cache ScrollMetadata so it doesn't need recomputed if the ASR and clip are
|
|
// unchanged. If mASR == nullptr then mMetadata is not valid.
|
|
struct CachedScrollMetadata {
|
|
const ActiveScrolledRoot* mASR;
|
|
const DisplayItemClip* mClip;
|
|
Maybe<ScrollMetadata> mMetadata;
|
|
|
|
CachedScrollMetadata() : mASR(nullptr), mClip(nullptr) {}
|
|
};
|
|
CachedScrollMetadata mCachedScrollMetadata;
|
|
};
|
|
|
|
class FLBDisplayListIterator : public FlattenedDisplayListIterator {
|
|
public:
|
|
FLBDisplayListIterator(nsDisplayListBuilder* aBuilder, nsDisplayList* aList,
|
|
ContainerState* aState)
|
|
: FlattenedDisplayListIterator(aBuilder, aList, false), mState(aState) {
|
|
MOZ_ASSERT(mState);
|
|
|
|
if (mState->mContainerItem) {
|
|
// Add container item hit test information for processing, if needed.
|
|
AddHitTestMarkerIfNeeded(mState->mContainerItem);
|
|
}
|
|
|
|
ResolveFlattening();
|
|
}
|
|
|
|
DisplayItemEntry GetNextEntry() {
|
|
if (!mMarkers.empty()) {
|
|
DisplayItemEntry entry = mMarkers.front();
|
|
mMarkers.pop_front();
|
|
return entry;
|
|
}
|
|
|
|
return DisplayItemEntry{GetNextItem(), DisplayItemEntryType::Item};
|
|
}
|
|
|
|
bool HasNext() const override {
|
|
return FlattenedDisplayListIterator::HasNext() || !mMarkers.empty();
|
|
}
|
|
|
|
private:
|
|
void AddHitTestMarkerIfNeeded(nsDisplayItem* aItem) {
|
|
if (aItem->HasHitTestInfo()) {
|
|
mMarkers.emplace_back(aItem, DisplayItemEntryType::HitTestInfo);
|
|
}
|
|
}
|
|
|
|
bool ShouldFlattenNextItem() override {
|
|
if (!FlattenedDisplayListIterator::ShouldFlattenNextItem()) {
|
|
return false;
|
|
}
|
|
|
|
nsDisplayItem* next = PeekNext();
|
|
const DisplayItemType type = next->GetType();
|
|
|
|
if (type == DisplayItemType::TYPE_SVG_WRAPPER) {
|
|
// We mark SetContainsSVG for the CONTENT_FRAME_TIME_WITH_SVG metric
|
|
if (RefPtr<LayerManager> lm = mState->mBuilder->GetWidgetLayerManager()) {
|
|
lm->SetContainsSVG(true);
|
|
}
|
|
}
|
|
|
|
if (!SupportsFlatteningWithMarkers(type)) {
|
|
return true;
|
|
}
|
|
|
|
if (type == DisplayItemType::TYPE_OPACITY &&
|
|
IsOpacityAppliedToChildren(next)) {
|
|
// This is the previous opacity flattening path, where the opacity has
|
|
// been applied to children.
|
|
return true;
|
|
}
|
|
|
|
if (mState->IsInInactiveLayer() || !ItemWantsInactiveLayer(next)) {
|
|
// Do not flatten nested inactive display items, or display items that
|
|
// want an active layer.
|
|
return false;
|
|
}
|
|
|
|
// If we reach here, we will emit an effect start marker for
|
|
// nsDisplayTransform or nsDisplayOpacity.
|
|
MOZ_ASSERT(type == DisplayItemType::TYPE_TRANSFORM ||
|
|
!IsOpacityAppliedToChildren(next));
|
|
return true;
|
|
}
|
|
|
|
void EnterChildList(nsDisplayItem* aContainerItem) override {
|
|
mFlattenedLists.AppendElement(aContainerItem);
|
|
AddMarkerIfNeeded<MarkerType::StartMarker>(aContainerItem, mMarkers);
|
|
AddHitTestMarkerIfNeeded(aContainerItem);
|
|
}
|
|
|
|
void ExitChildList() override {
|
|
MOZ_ASSERT(!mFlattenedLists.IsEmpty());
|
|
nsDisplayItem* aContainerItem = mFlattenedLists.PopLastElement();
|
|
AddMarkerIfNeeded<MarkerType::EndMarker>(aContainerItem, mMarkers);
|
|
}
|
|
|
|
bool ItemWantsInactiveLayer(nsDisplayItem* aItem) {
|
|
const LayerState layerState = aItem->GetLayerState(
|
|
mState->mBuilder, mState->mManager, mState->mParameters);
|
|
|
|
return layerState == LayerState::LAYER_INACTIVE;
|
|
}
|
|
|
|
std::deque<DisplayItemEntry> mMarkers;
|
|
AutoTArray<nsDisplayItem*, 16> mFlattenedLists;
|
|
ContainerState* mState;
|
|
};
|
|
|
|
class PaintedDisplayItemLayerUserData : public LayerUserData {
|
|
public:
|
|
PaintedDisplayItemLayerUserData()
|
|
: mForcedBackgroundColor(NS_RGBA(0, 0, 0, 0)),
|
|
mXScale(1.f),
|
|
mYScale(1.f),
|
|
mAppUnitsPerDevPixel(0),
|
|
mTranslation(0, 0),
|
|
mAnimatedGeometryRootPosition(0, 0),
|
|
mLastItemCount(0),
|
|
mContainerLayerFrame(nullptr),
|
|
mHasExplicitLastPaintOffset(false),
|
|
mDisabledAlpha(false) {}
|
|
|
|
NS_INLINE_DECL_REFCOUNTING(PaintedDisplayItemLayerUserData);
|
|
|
|
/**
|
|
* A color that should be painted over the bounds of the layer's visible
|
|
* region before any other content is painted.
|
|
*/
|
|
nscolor mForcedBackgroundColor;
|
|
|
|
/**
|
|
* The resolution scale used.
|
|
*/
|
|
float mXScale, mYScale;
|
|
|
|
/**
|
|
* The appunits per dev pixel for the items in this layer.
|
|
*/
|
|
nscoord mAppUnitsPerDevPixel;
|
|
|
|
/**
|
|
* The offset from the PaintedLayer's 0,0 to the
|
|
* reference frame. This isn't necessarily the same as the transform
|
|
* set on the PaintedLayer since we might also be applying an extra
|
|
* offset specified by the parent ContainerLayer/
|
|
*/
|
|
nsIntPoint mTranslation;
|
|
|
|
/**
|
|
* We try to make 0,0 of the PaintedLayer be the top-left of the
|
|
* border-box of the "active scrolled root" frame (i.e. the nearest ancestor
|
|
* frame for the display items that is being actively scrolled). But
|
|
* we force the PaintedLayer transform to be an integer translation, and we
|
|
* may have a resolution scale, so we have to snap the PaintedLayer transform,
|
|
* so 0,0 may not be exactly the top-left of the active scrolled root. Here we
|
|
* store the coordinates in PaintedLayer space of the top-left of the
|
|
* active scrolled root.
|
|
*/
|
|
gfxPoint mAnimatedGeometryRootPosition;
|
|
|
|
nsIntRegion mRegionToInvalidate;
|
|
|
|
// The offset between the active scrolled root of this layer
|
|
// and the root of the container for the previous and current
|
|
// paints respectively.
|
|
nsPoint mLastAnimatedGeometryRootOrigin;
|
|
nsPoint mAnimatedGeometryRootOrigin;
|
|
|
|
RefPtr<ColorLayer> mColorLayer;
|
|
RefPtr<ImageLayer> mImageLayer;
|
|
|
|
// The region for which display item visibility for this layer has already
|
|
// been calculated. Used to reduce the number of calls to
|
|
// RecomputeVisibilityForItems if it is known in advance that a larger
|
|
// region will be painted during a transaction than in a single call to
|
|
// DrawPaintedLayer, for example when progressive paint is enabled.
|
|
nsIntRegion mVisibilityComputedRegion;
|
|
|
|
// The area for which we called RecomputeVisibilityForItems on the
|
|
// previous paint.
|
|
nsRect mPreviousRecomputeVisibilityRect;
|
|
|
|
// The number of items assigned to this layer on the previous paint.
|
|
size_t mLastItemCount;
|
|
|
|
// The translation set on this PaintedLayer before we started updating the
|
|
// layer tree.
|
|
nsIntPoint mLastPaintOffset;
|
|
|
|
// Temporary state only valid during the FrameLayerBuilder's lifetime.
|
|
// FLB's mPaintedLayerItems is responsible for cleaning these up when
|
|
// we finish painting to avoid dangling pointers.
|
|
std::vector<AssignedDisplayItem> mItems;
|
|
nsIFrame* mContainerLayerFrame;
|
|
|
|
bool mHasExplicitLastPaintOffset;
|
|
|
|
/**
|
|
* This is set when the painted layer has no component alpha.
|
|
*/
|
|
bool mDisabledAlpha;
|
|
|
|
protected:
|
|
~PaintedDisplayItemLayerUserData() override = default;
|
|
};
|
|
|
|
FrameLayerBuilder::FrameLayerBuilder()
|
|
: mRetainingManager(nullptr),
|
|
mDisplayListBuilder(nullptr),
|
|
mContainingPaintedLayer(nullptr),
|
|
mInactiveLayerClip(nullptr),
|
|
mInvalidateAllLayers(false),
|
|
mInLayerTreeCompressionMode(false),
|
|
mIsInactiveLayerManager(false) {
|
|
MOZ_COUNT_CTOR(FrameLayerBuilder);
|
|
}
|
|
|
|
FrameLayerBuilder::~FrameLayerBuilder() {
|
|
GetMaskLayerImageCache()->Sweep();
|
|
for (PaintedDisplayItemLayerUserData* userData : mPaintedLayerItems) {
|
|
userData->mItems.clear();
|
|
userData->mContainerLayerFrame = nullptr;
|
|
}
|
|
MOZ_COUNT_DTOR(FrameLayerBuilder);
|
|
}
|
|
|
|
void FrameLayerBuilder::AddPaintedLayerItemsEntry(
|
|
PaintedDisplayItemLayerUserData* aData) {
|
|
mPaintedLayerItems.AppendElement(aData);
|
|
}
|
|
|
|
/*
|
|
* User data for layers which will be used as masks.
|
|
*/
|
|
struct MaskLayerUserData : public LayerUserData {
|
|
MaskLayerUserData()
|
|
: mScaleX(-1.0f), mScaleY(-1.0f), mAppUnitsPerDevPixel(-1) {}
|
|
MaskLayerUserData(const DisplayItemClip& aClip, int32_t aAppUnitsPerDevPixel,
|
|
const ContainerLayerParameters& aParams)
|
|
: mScaleX(aParams.mXScale),
|
|
mScaleY(aParams.mYScale),
|
|
mOffset(aParams.mOffset),
|
|
mAppUnitsPerDevPixel(aAppUnitsPerDevPixel) {
|
|
aClip.AppendRoundedRects(&mRoundedClipRects);
|
|
}
|
|
|
|
void operator=(MaskLayerUserData&& aOther) {
|
|
mScaleX = aOther.mScaleX;
|
|
mScaleY = aOther.mScaleY;
|
|
mOffset = aOther.mOffset;
|
|
mAppUnitsPerDevPixel = aOther.mAppUnitsPerDevPixel;
|
|
mRoundedClipRects.SwapElements(aOther.mRoundedClipRects);
|
|
}
|
|
|
|
bool operator==(const MaskLayerUserData& aOther) const {
|
|
return mRoundedClipRects == aOther.mRoundedClipRects &&
|
|
mScaleX == aOther.mScaleX && mScaleY == aOther.mScaleY &&
|
|
mOffset == aOther.mOffset &&
|
|
mAppUnitsPerDevPixel == aOther.mAppUnitsPerDevPixel;
|
|
}
|
|
|
|
// Keeps a MaskLayerImageKey alive by managing its mLayerCount member-var
|
|
MaskLayerImageCache::MaskLayerImageKeyRef mImageKey;
|
|
// properties of the mask layer; the mask layer may be re-used if these
|
|
// remain unchanged.
|
|
nsTArray<DisplayItemClip::RoundedRect> mRoundedClipRects;
|
|
// scale from the masked layer which is applied to the mask
|
|
float mScaleX, mScaleY;
|
|
// The ContainerLayerParameters offset which is applied to the mask's
|
|
// transform.
|
|
nsIntPoint mOffset;
|
|
int32_t mAppUnitsPerDevPixel;
|
|
};
|
|
|
|
/*
|
|
* User data for layers which will be used as masks for css positioned mask.
|
|
*/
|
|
struct CSSMaskLayerUserData : public LayerUserData {
|
|
CSSMaskLayerUserData() : mMaskStyle(nsStyleImageLayers::LayerType::Mask) {}
|
|
|
|
CSSMaskLayerUserData(nsIFrame* aFrame, const nsIntRect& aMaskBounds,
|
|
const nsPoint& aMaskLayerOffset)
|
|
: mMaskBounds(aMaskBounds),
|
|
mMaskStyle(aFrame->StyleSVGReset()->mMask),
|
|
mMaskLayerOffset(aMaskLayerOffset) {}
|
|
|
|
void operator=(CSSMaskLayerUserData&& aOther) {
|
|
mMaskBounds = aOther.mMaskBounds;
|
|
mMaskStyle = std::move(aOther.mMaskStyle);
|
|
mMaskLayerOffset = aOther.mMaskLayerOffset;
|
|
}
|
|
|
|
bool operator==(const CSSMaskLayerUserData& aOther) const {
|
|
if (!mMaskBounds.IsEqualInterior(aOther.mMaskBounds)) {
|
|
return false;
|
|
}
|
|
|
|
// Make sure we draw the same portion of the mask onto mask layer.
|
|
if (mMaskLayerOffset != aOther.mMaskLayerOffset) {
|
|
return false;
|
|
}
|
|
|
|
return mMaskStyle == aOther.mMaskStyle;
|
|
}
|
|
|
|
private:
|
|
nsIntRect mMaskBounds;
|
|
nsStyleImageLayers mMaskStyle;
|
|
nsPoint mMaskLayerOffset; // The offset from the origin of mask bounds to
|
|
// the origin of mask layer.
|
|
};
|
|
|
|
/*
|
|
* A helper object to create a draw target for painting mask and create a
|
|
* image container to hold the drawing result. The caller can then bind this
|
|
* image container with a image mask layer via ImageLayer::SetContainer.
|
|
*/
|
|
class MaskImageData {
|
|
public:
|
|
MaskImageData(const gfx::IntSize& aSize, LayerManager* aLayerManager)
|
|
: mTextureClientLocked(false),
|
|
mSize(aSize),
|
|
mLayerManager(aLayerManager) {
|
|
MOZ_ASSERT(!mSize.IsEmpty());
|
|
MOZ_ASSERT(mLayerManager);
|
|
}
|
|
|
|
~MaskImageData() {
|
|
if (mTextureClientLocked) {
|
|
MOZ_ASSERT(mTextureClient);
|
|
// Clear DrawTarget before Unlock.
|
|
mDrawTarget = nullptr;
|
|
mTextureClient->Unlock();
|
|
}
|
|
}
|
|
|
|
gfx::DrawTarget* CreateDrawTarget() {
|
|
if (mDrawTarget) {
|
|
return mDrawTarget;
|
|
}
|
|
|
|
if (mLayerManager->GetBackendType() == LayersBackend::LAYERS_BASIC) {
|
|
mDrawTarget = mLayerManager->CreateOptimalMaskDrawTarget(mSize);
|
|
return mDrawTarget;
|
|
}
|
|
|
|
MOZ_ASSERT(mLayerManager->GetBackendType() ==
|
|
LayersBackend::LAYERS_CLIENT ||
|
|
mLayerManager->GetBackendType() == LayersBackend::LAYERS_WR);
|
|
|
|
KnowsCompositor* knowsCompositor = mLayerManager->AsKnowsCompositor();
|
|
if (!knowsCompositor) {
|
|
return nullptr;
|
|
}
|
|
mTextureClient = TextureClient::CreateForDrawing(
|
|
knowsCompositor, SurfaceFormat::A8, mSize, BackendSelector::Content,
|
|
TextureFlags::DISALLOW_BIGIMAGE,
|
|
TextureAllocationFlags::ALLOC_CLEAR_BUFFER);
|
|
if (!mTextureClient) {
|
|
return nullptr;
|
|
}
|
|
|
|
mTextureClientLocked = mTextureClient->Lock(OpenMode::OPEN_READ_WRITE);
|
|
if (!mTextureClientLocked) {
|
|
return nullptr;
|
|
}
|
|
|
|
mDrawTarget = mTextureClient->BorrowDrawTarget();
|
|
return mDrawTarget;
|
|
}
|
|
|
|
already_AddRefed<ImageContainer> CreateImageAndImageContainer() {
|
|
RefPtr<ImageContainer> container = LayerManager::CreateImageContainer();
|
|
RefPtr<Image> image = CreateImage();
|
|
|
|
if (!image) {
|
|
return nullptr;
|
|
}
|
|
container->SetCurrentImageInTransaction(image);
|
|
|
|
return container.forget();
|
|
}
|
|
|
|
private:
|
|
already_AddRefed<Image> CreateImage() {
|
|
if (mLayerManager->GetBackendType() == LayersBackend::LAYERS_BASIC &&
|
|
mDrawTarget) {
|
|
RefPtr<SourceSurface> surface = mDrawTarget->Snapshot();
|
|
RefPtr<SourceSurfaceImage> image = new SourceSurfaceImage(mSize, surface);
|
|
// Disallow BIGIMAGE (splitting into multiple textures) for mask
|
|
// layer images
|
|
image->SetTextureFlags(TextureFlags::DISALLOW_BIGIMAGE);
|
|
return image.forget();
|
|
}
|
|
|
|
if ((mLayerManager->GetBackendType() == LayersBackend::LAYERS_CLIENT ||
|
|
mLayerManager->GetBackendType() == LayersBackend::LAYERS_WR) &&
|
|
mTextureClient && mDrawTarget) {
|
|
RefPtr<TextureWrapperImage> image = new TextureWrapperImage(
|
|
mTextureClient, gfx::IntRect(gfx::IntPoint(0, 0), mSize));
|
|
return image.forget();
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
bool mTextureClientLocked;
|
|
gfx::IntSize mSize;
|
|
LayerManager* mLayerManager;
|
|
RefPtr<gfx::DrawTarget> mDrawTarget;
|
|
RefPtr<TextureClient> mTextureClient;
|
|
};
|
|
|
|
static PaintedDisplayItemLayerUserData* GetPaintedDisplayItemLayerUserData(
|
|
Layer* aLayer) {
|
|
return static_cast<PaintedDisplayItemLayerUserData*>(
|
|
aLayer->GetUserData(&gPaintedDisplayItemLayerUserData));
|
|
}
|
|
|
|
/* static */
|
|
void FrameLayerBuilder::Shutdown() {
|
|
if (gMaskLayerImageCache) {
|
|
delete gMaskLayerImageCache;
|
|
gMaskLayerImageCache = nullptr;
|
|
}
|
|
}
|
|
|
|
void FrameLayerBuilder::Init(nsDisplayListBuilder* aBuilder,
|
|
LayerManager* aManager,
|
|
PaintedLayerData* aLayerData,
|
|
bool aIsInactiveLayerManager,
|
|
const DisplayItemClip* aInactiveLayerClip) {
|
|
mDisplayListBuilder = aBuilder;
|
|
mRootPresContext =
|
|
aBuilder->RootReferenceFrame()->PresContext()->GetRootPresContext();
|
|
mContainingPaintedLayer = aLayerData;
|
|
mIsInactiveLayerManager = aIsInactiveLayerManager;
|
|
mInactiveLayerClip = aInactiveLayerClip;
|
|
aManager->SetUserData(&gLayerManagerLayerBuilder, this);
|
|
}
|
|
|
|
void FrameLayerBuilder::FlashPaint(gfxContext* aContext) {
|
|
float r = float(rand()) / RAND_MAX;
|
|
float g = float(rand()) / RAND_MAX;
|
|
float b = float(rand()) / RAND_MAX;
|
|
aContext->SetColor(Color(r, g, b, 0.4f));
|
|
aContext->Paint();
|
|
}
|
|
|
|
DisplayItemData* FrameLayerBuilder::GetDisplayItemData(nsIFrame* aFrame,
|
|
uint32_t aKey) {
|
|
const SmallPointerArray<DisplayItemData>& array = aFrame->DisplayItemData();
|
|
for (uint32_t i = 0; i < array.Length(); i++) {
|
|
DisplayItemData* item =
|
|
DisplayItemData::AssertDisplayItemData(array.ElementAt(i));
|
|
if (item->mDisplayItemKey == aKey && item->FirstFrame() == aFrame &&
|
|
item->mLayer->Manager() == mRetainingManager) {
|
|
return item;
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
#ifdef MOZ_DUMP_PAINTING
|
|
static nsACString& AppendToString(nsACString& s, const nsIntRect& r,
|
|
const char* pfx = "", const char* sfx = "") {
|
|
s += pfx;
|
|
s += nsPrintfCString("(x=%d, y=%d, w=%d, h=%d)", r.x, r.y, r.width, r.height);
|
|
return s += sfx;
|
|
}
|
|
|
|
static nsACString& AppendToString(nsACString& s, const nsIntRegion& r,
|
|
const char* pfx = "", const char* sfx = "") {
|
|
s += pfx;
|
|
|
|
s += "< ";
|
|
for (auto iter = r.RectIter(); !iter.Done(); iter.Next()) {
|
|
AppendToString(s, iter.Get()) += "; ";
|
|
}
|
|
s += ">";
|
|
|
|
return s += sfx;
|
|
}
|
|
#endif // MOZ_DUMP_PAINTING
|
|
|
|
/**
|
|
* Invalidate aRegion in aLayer. aLayer is in the coordinate system
|
|
* *after* aTranslation has been applied, so we need to
|
|
* apply the inverse of that transform before calling InvalidateRegion.
|
|
*/
|
|
static void InvalidatePostTransformRegion(PaintedLayer* aLayer,
|
|
const nsIntRegion& aRegion,
|
|
const nsIntPoint& aTranslation) {
|
|
// Convert the region from the coordinates of the container layer
|
|
// (relative to the snapped top-left of the display list reference frame)
|
|
// to the PaintedLayer's own coordinates
|
|
nsIntRegion rgn = aRegion;
|
|
|
|
rgn.MoveBy(-aTranslation);
|
|
aLayer->InvalidateRegion(rgn);
|
|
#ifdef MOZ_DUMP_PAINTING
|
|
if (nsLayoutUtils::InvalidationDebuggingIsEnabled()) {
|
|
nsAutoCString str;
|
|
AppendToString(str, rgn);
|
|
printf_stderr("Invalidating layer %p: %s\n", aLayer, str.get());
|
|
}
|
|
#endif
|
|
}
|
|
|
|
static void InvalidatePreTransformRect(PaintedLayer* aLayer,
|
|
const nsRect& aRect,
|
|
const DisplayItemClip& aClip,
|
|
const nsIntPoint& aTranslation,
|
|
TransformClipNode* aTransform) {
|
|
PaintedDisplayItemLayerUserData* data =
|
|
static_cast<PaintedDisplayItemLayerUserData*>(
|
|
aLayer->GetUserData(&gPaintedDisplayItemLayerUserData));
|
|
|
|
nsRect rect = aClip.ApplyNonRoundedIntersection(aRect);
|
|
|
|
if (aTransform) {
|
|
rect = aTransform->TransformRect(rect, data->mAppUnitsPerDevPixel);
|
|
}
|
|
|
|
nsIntRect pixelRect = rect.ScaleToOutsidePixels(data->mXScale, data->mYScale,
|
|
data->mAppUnitsPerDevPixel);
|
|
|
|
InvalidatePostTransformRegion(aLayer, pixelRect, aTranslation);
|
|
}
|
|
|
|
static nsIntPoint GetTranslationForPaintedLayer(PaintedLayer* aLayer) {
|
|
PaintedDisplayItemLayerUserData* data =
|
|
static_cast<PaintedDisplayItemLayerUserData*>(
|
|
aLayer->GetUserData(&gPaintedDisplayItemLayerUserData));
|
|
NS_ASSERTION(data, "Must be a tracked painted layer!");
|
|
|
|
return data->mTranslation;
|
|
}
|
|
|
|
/**
|
|
* Some frames can have multiple, nested, retaining layer managers
|
|
* associated with them (normal manager, inactive managers, SVG effects).
|
|
* In these cases we store the 'outermost' LayerManager data property
|
|
* on the frame since we can walk down the chain from there.
|
|
*
|
|
* If one of these frames has just been destroyed, we will free the inner
|
|
* layer manager when removing the entry from mFramesWithLayers. Destroying
|
|
* the layer manager destroys the LayerManagerData and calls into
|
|
* the DisplayItemData destructor. If the inner layer manager had any
|
|
* items with the same frame, then we attempt to retrieve properties
|
|
* from the deleted frame.
|
|
*
|
|
* Cache the destroyed frame pointer here so we can avoid crashing in this case.
|
|
*/
|
|
|
|
/* static */
|
|
void FrameLayerBuilder::RemoveFrameFromLayerManager(
|
|
const nsIFrame* aFrame, SmallPointerArray<DisplayItemData>& aArray) {
|
|
MOZ_RELEASE_ASSERT(!sDestroyedFrame);
|
|
sDestroyedFrame = aFrame;
|
|
|
|
// Hold a reference to all the items so that they don't get
|
|
// deleted from under us.
|
|
nsTArray<RefPtr<DisplayItemData>> arrayCopy;
|
|
for (DisplayItemData* data : aArray) {
|
|
arrayCopy.AppendElement(data);
|
|
}
|
|
|
|
#ifdef DEBUG_DISPLAY_ITEM_DATA
|
|
if (aArray->Length()) {
|
|
LayerManagerData* rootData = aArray->ElementAt(0)->mParent;
|
|
while (rootData->mParent) {
|
|
rootData = rootData->mParent;
|
|
}
|
|
printf_stderr("Removing frame %p - dumping display data\n", aFrame);
|
|
rootData->Dump();
|
|
}
|
|
#endif
|
|
|
|
for (DisplayItemData* data : aArray) {
|
|
PaintedLayer* t = data->mLayer ? data->mLayer->AsPaintedLayer() : nullptr;
|
|
if (t) {
|
|
PaintedDisplayItemLayerUserData* paintedData =
|
|
static_cast<PaintedDisplayItemLayerUserData*>(
|
|
t->GetUserData(&gPaintedDisplayItemLayerUserData));
|
|
if (paintedData && data->mGeometry) {
|
|
const int32_t appUnitsPerDevPixel = paintedData->mAppUnitsPerDevPixel;
|
|
nsRegion rgn = data->mGeometry->ComputeInvalidationRegion();
|
|
nsIntRegion pixelRgn = rgn.ToOutsidePixels(appUnitsPerDevPixel);
|
|
|
|
if (data->mTransform) {
|
|
pixelRgn = data->mTransform->TransformRegion(pixelRgn);
|
|
}
|
|
|
|
pixelRgn =
|
|
pixelRgn.ScaleRoundOut(paintedData->mXScale, paintedData->mYScale);
|
|
|
|
pixelRgn.MoveBy(-GetTranslationForPaintedLayer(t));
|
|
|
|
paintedData->mRegionToInvalidate.Or(paintedData->mRegionToInvalidate,
|
|
pixelRgn);
|
|
paintedData->mRegionToInvalidate.SimplifyOutward(8);
|
|
}
|
|
}
|
|
|
|
auto it = std::find(data->mParent->mDisplayItems.begin(),
|
|
data->mParent->mDisplayItems.end(), data);
|
|
MOZ_ASSERT(it != data->mParent->mDisplayItems.end());
|
|
std::iter_swap(it, data->mParent->mDisplayItems.end() - 1);
|
|
data->mParent->mDisplayItems.pop_back();
|
|
}
|
|
|
|
if (aFrame->IsSubDocumentFrame()) {
|
|
const nsSubDocumentFrame* subdoc =
|
|
static_cast<const nsSubDocumentFrame*>(aFrame);
|
|
nsFrameLoader* frameLoader = subdoc->FrameLoader();
|
|
if (frameLoader && frameLoader->GetRemoteBrowser()) {
|
|
// This is a remote browser that is going away, notify it that it is now
|
|
// hidden
|
|
frameLoader->GetRemoteBrowser()->UpdateEffects(
|
|
mozilla::dom::EffectsInfo::FullyHidden());
|
|
}
|
|
}
|
|
|
|
arrayCopy.Clear();
|
|
sDestroyedFrame = nullptr;
|
|
}
|
|
|
|
void FrameLayerBuilder::DidBeginRetainedLayerTransaction(
|
|
LayerManager* aManager) {
|
|
mRetainingManager = aManager;
|
|
LayerManagerData* data = static_cast<LayerManagerData*>(
|
|
aManager->GetUserData(&gLayerManagerUserData));
|
|
if (data) {
|
|
mInvalidateAllLayers = data->mInvalidateAllLayers;
|
|
} else {
|
|
data = new LayerManagerData(aManager);
|
|
aManager->SetUserData(&gLayerManagerUserData, data);
|
|
}
|
|
}
|
|
|
|
void FrameLayerBuilder::DidEndTransaction() {
|
|
GetMaskLayerImageCache()->Sweep();
|
|
}
|
|
|
|
void FrameLayerBuilder::WillEndTransaction() {
|
|
if (!mRetainingManager) {
|
|
return;
|
|
}
|
|
|
|
// We need to save the data we'll need to support retaining.
|
|
LayerManagerData* data = static_cast<LayerManagerData*>(
|
|
mRetainingManager->GetUserData(&gLayerManagerUserData));
|
|
NS_ASSERTION(data, "Must have data!");
|
|
|
|
// Update all the frames that used to have layers.
|
|
auto iter = data->mDisplayItems.begin();
|
|
while (iter != data->mDisplayItems.end()) {
|
|
DisplayItemData* did = iter->get();
|
|
if (!did->mUsed) {
|
|
// This item was visible, but isn't anymore.
|
|
PaintedLayer* t = did->mLayer->AsPaintedLayer();
|
|
if (t && did->mGeometry) {
|
|
#ifdef MOZ_DUMP_PAINTING
|
|
if (nsLayoutUtils::InvalidationDebuggingIsEnabled()) {
|
|
printf_stderr(
|
|
"Invalidating unused display item (%i) belonging to "
|
|
"frame %p from layer %p\n",
|
|
did->mDisplayItemKey, did->mFrameList[0], t);
|
|
}
|
|
#endif
|
|
InvalidatePreTransformRect(
|
|
t, did->mGeometry->ComputeInvalidationRegion(), did->mClip,
|
|
GetLastPaintOffset(t), did->mTransform);
|
|
}
|
|
|
|
did->NotifyRemoved();
|
|
|
|
// Remove this item. Swapping it with the last element first is
|
|
// quicker than erasing from the middle.
|
|
if (iter != data->mDisplayItems.end() - 1) {
|
|
std::iter_swap(iter, data->mDisplayItems.end() - 1);
|
|
data->mDisplayItems.pop_back();
|
|
} else {
|
|
data->mDisplayItems.pop_back();
|
|
break;
|
|
}
|
|
|
|
// Don't increment iter because we still need to process the item which
|
|
// was moved.
|
|
|
|
} else {
|
|
ComputeGeometryChangeForItem(did);
|
|
iter++;
|
|
}
|
|
}
|
|
|
|
data->mInvalidateAllLayers = false;
|
|
}
|
|
|
|
/* static */
|
|
DisplayItemData* FrameLayerBuilder::GetDisplayItemDataForManager(
|
|
nsPaintedDisplayItem* aItem, LayerManager* aManager) {
|
|
for (DisplayItemData* did : aItem->Frame()->DisplayItemData()) {
|
|
DisplayItemData* data = DisplayItemData::AssertDisplayItemData(did);
|
|
if (data->mDisplayItemKey == aItem->GetPerFrameKey() &&
|
|
data->mLayer->Manager() == aManager) {
|
|
return data;
|
|
}
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
bool FrameLayerBuilder::HasRetainedDataFor(nsIFrame* aFrame,
|
|
uint32_t aDisplayItemKey) {
|
|
const SmallPointerArray<DisplayItemData>& array = aFrame->DisplayItemData();
|
|
for (uint32_t i = 0; i < array.Length(); i++) {
|
|
if (DisplayItemData::AssertDisplayItemData(array.ElementAt(i))
|
|
->mDisplayItemKey == aDisplayItemKey) {
|
|
return true;
|
|
}
|
|
}
|
|
if (RefPtr<WebRenderUserData> data =
|
|
GetWebRenderUserData<WebRenderFallbackData>(aFrame,
|
|
aDisplayItemKey)) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
DisplayItemData* FrameLayerBuilder::GetOldLayerForFrame(
|
|
nsIFrame* aFrame, uint32_t aDisplayItemKey,
|
|
DisplayItemData* aOldData, /* = nullptr */
|
|
LayerManager* aOldLayerManager /* = nullptr */) {
|
|
// If we need to build a new layer tree, then just refuse to recycle
|
|
// anything.
|
|
if (!mRetainingManager || mInvalidateAllLayers) {
|
|
return nullptr;
|
|
}
|
|
|
|
MOZ_ASSERT(!aOldData || aOldLayerManager,
|
|
"You must provide aOldLayerManager to check aOldData's validity.");
|
|
MOZ_ASSERT_IF(aOldData, aOldLayerManager == aOldData->mLayer->Manager());
|
|
|
|
DisplayItemData* data = aOldData;
|
|
if (!data || aOldLayerManager != mRetainingManager) {
|
|
data = GetDisplayItemData(aFrame, aDisplayItemKey);
|
|
}
|
|
|
|
MOZ_ASSERT(data == GetDisplayItemData(aFrame, aDisplayItemKey));
|
|
|
|
return data;
|
|
}
|
|
|
|
Layer* FrameLayerBuilder::GetOldLayerFor(nsDisplayItem* aItem,
|
|
nsDisplayItemGeometry** aOldGeometry,
|
|
DisplayItemClip** aOldClip) {
|
|
uint32_t key = aItem->GetPerFrameKey();
|
|
nsIFrame* frame = aItem->Frame();
|
|
|
|
DisplayItemData* oldData = GetOldLayerForFrame(frame, key);
|
|
if (oldData) {
|
|
if (aOldGeometry) {
|
|
*aOldGeometry = oldData->mGeometry.get();
|
|
}
|
|
if (aOldClip) {
|
|
*aOldClip = &oldData->mClip;
|
|
}
|
|
return oldData->mLayer;
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
/* static */
|
|
DisplayItemData* FrameLayerBuilder::GetOldDataFor(nsDisplayItem* aItem) {
|
|
const SmallPointerArray<DisplayItemData>& array =
|
|
aItem->Frame()->DisplayItemData();
|
|
|
|
for (uint32_t i = 0; i < array.Length(); i++) {
|
|
DisplayItemData* data =
|
|
DisplayItemData::AssertDisplayItemData(array.ElementAt(i));
|
|
|
|
if (data->mDisplayItemKey == aItem->GetPerFrameKey()) {
|
|
return data;
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
// Reset state that should not persist when a layer is recycled.
|
|
static void ResetLayerStateForRecycling(Layer* aLayer) {
|
|
// Currently, this clears the mask layer and ancestor mask layers.
|
|
// Other cleanup may be added here.
|
|
aLayer->SetMaskLayer(nullptr);
|
|
aLayer->SetAncestorMaskLayers({});
|
|
}
|
|
|
|
already_AddRefed<ColorLayer> ContainerState::CreateOrRecycleColorLayer(
|
|
PaintedLayer* aPainted) {
|
|
PaintedDisplayItemLayerUserData* data =
|
|
static_cast<PaintedDisplayItemLayerUserData*>(
|
|
aPainted->GetUserData(&gPaintedDisplayItemLayerUserData));
|
|
RefPtr<ColorLayer> layer = data->mColorLayer;
|
|
if (layer) {
|
|
ResetLayerStateForRecycling(layer);
|
|
layer->ClearExtraDumpInfo();
|
|
} else {
|
|
// Create a new layer
|
|
layer = mManager->CreateColorLayer();
|
|
if (!layer) {
|
|
return nullptr;
|
|
}
|
|
// Mark this layer as being used for painting display items
|
|
data->mColorLayer = layer;
|
|
layer->SetUserData(&gColorLayerUserData, nullptr);
|
|
|
|
// Remove other layer types we might have stored for this PaintedLayer
|
|
data->mImageLayer = nullptr;
|
|
}
|
|
return layer.forget();
|
|
}
|
|
|
|
already_AddRefed<ImageLayer> ContainerState::CreateOrRecycleImageLayer(
|
|
PaintedLayer* aPainted) {
|
|
PaintedDisplayItemLayerUserData* data =
|
|
static_cast<PaintedDisplayItemLayerUserData*>(
|
|
aPainted->GetUserData(&gPaintedDisplayItemLayerUserData));
|
|
RefPtr<ImageLayer> layer = data->mImageLayer;
|
|
if (layer) {
|
|
ResetLayerStateForRecycling(layer);
|
|
layer->ClearExtraDumpInfo();
|
|
} else {
|
|
// Create a new layer
|
|
layer = mManager->CreateImageLayer();
|
|
if (!layer) {
|
|
return nullptr;
|
|
}
|
|
// Mark this layer as being used for painting display items
|
|
data->mImageLayer = layer;
|
|
layer->SetUserData(&gImageLayerUserData, nullptr);
|
|
|
|
// Remove other layer types we might have stored for this PaintedLayer
|
|
data->mColorLayer = nullptr;
|
|
}
|
|
return layer.forget();
|
|
}
|
|
|
|
template <typename UserData>
|
|
already_AddRefed<ImageLayer> ContainerState::CreateOrRecycleMaskImageLayerFor(
|
|
const MaskLayerKey& aKey, UserData* (*aGetUserData)(Layer* aLayer),
|
|
void (*aSetDefaultUserData)(Layer* aLayer)) {
|
|
RefPtr<ImageLayer> result = mRecycledMaskImageLayers.Get(aKey);
|
|
|
|
if (result && aGetUserData(result.get())) {
|
|
mRecycledMaskImageLayers.Remove(aKey);
|
|
aKey.mLayer->ClearExtraDumpInfo();
|
|
// XXX if we use clip on mask layers, null it out here
|
|
} else {
|
|
// Create a new layer
|
|
result = mManager->CreateImageLayer();
|
|
if (!result) {
|
|
return nullptr;
|
|
}
|
|
aSetDefaultUserData(result);
|
|
}
|
|
|
|
return result.forget();
|
|
}
|
|
|
|
static const double SUBPIXEL_OFFSET_EPSILON = 0.02;
|
|
|
|
/**
|
|
* This normally computes NSToIntRoundUp(aValue). However, if that would
|
|
* give a residual near 0.5 while aOldResidual is near -0.5, or
|
|
* it would give a residual near -0.5 while aOldResidual is near 0.5, then
|
|
* instead we return the integer in the other direction so that the residual
|
|
* is close to aOldResidual.
|
|
*/
|
|
static int32_t RoundToMatchResidual(double aValue, double aOldResidual) {
|
|
int32_t v = NSToIntRoundUp(aValue);
|
|
double residual = aValue - v;
|
|
if (aOldResidual < 0) {
|
|
if (residual > 0 &&
|
|
fabs(residual - 1.0 - aOldResidual) < SUBPIXEL_OFFSET_EPSILON) {
|
|
// Round up instead
|
|
return int32_t(ceil(aValue));
|
|
}
|
|
} else if (aOldResidual > 0) {
|
|
if (residual < 0 &&
|
|
fabs(residual + 1.0 - aOldResidual) < SUBPIXEL_OFFSET_EPSILON) {
|
|
// Round down instead
|
|
return int32_t(floor(aValue));
|
|
}
|
|
}
|
|
return v;
|
|
}
|
|
|
|
static void ResetScrollPositionForLayerPixelAlignment(
|
|
AnimatedGeometryRoot* aAnimatedGeometryRoot) {
|
|
nsIScrollableFrame* sf =
|
|
nsLayoutUtils::GetScrollableFrameFor(*aAnimatedGeometryRoot);
|
|
if (sf) {
|
|
sf->ResetScrollPositionForLayerPixelAlignment();
|
|
}
|
|
}
|
|
|
|
static void InvalidateEntirePaintedLayer(
|
|
PaintedLayer* aLayer, AnimatedGeometryRoot* aAnimatedGeometryRoot,
|
|
const char* aReason) {
|
|
#ifdef MOZ_DUMP_PAINTING
|
|
if (nsLayoutUtils::InvalidationDebuggingIsEnabled()) {
|
|
printf_stderr("Invalidating entire layer %p: %s\n", aLayer, aReason);
|
|
}
|
|
#endif
|
|
aLayer->InvalidateWholeLayer();
|
|
aLayer->SetInvalidRectToVisibleRegion();
|
|
ResetScrollPositionForLayerPixelAlignment(aAnimatedGeometryRoot);
|
|
}
|
|
|
|
LayerManager::PaintedLayerCreationHint ContainerState::GetLayerCreationHint(
|
|
AnimatedGeometryRoot* aAnimatedGeometryRoot) {
|
|
// Check whether the layer will be scrollable. This is used as a hint to
|
|
// influence whether tiled layers are used or not.
|
|
|
|
// Check creation hint inherited from our parent.
|
|
if (mParameters.mLayerCreationHint == LayerManager::SCROLLABLE) {
|
|
return LayerManager::SCROLLABLE;
|
|
}
|
|
|
|
// Check whether there's any active scroll frame on the animated geometry
|
|
// root chain.
|
|
for (AnimatedGeometryRoot* agr = aAnimatedGeometryRoot;
|
|
agr && agr != mContainerAnimatedGeometryRoot; agr = agr->mParentAGR) {
|
|
nsIFrame* fParent = nsLayoutUtils::GetCrossDocParentFrame(*agr);
|
|
if (!fParent) {
|
|
break;
|
|
}
|
|
nsIScrollableFrame* scrollable = do_QueryFrame(fParent);
|
|
if (scrollable) {
|
|
return LayerManager::SCROLLABLE;
|
|
}
|
|
}
|
|
return LayerManager::NONE;
|
|
}
|
|
|
|
already_AddRefed<PaintedLayer> ContainerState::AttemptToRecyclePaintedLayer(
|
|
AnimatedGeometryRoot* aAnimatedGeometryRoot, nsDisplayItem* aItem,
|
|
const nsPoint& aTopLeft, const nsIFrame* aReferenceFrame) {
|
|
Layer* oldLayer = mLayerBuilder->GetOldLayerFor(aItem);
|
|
if (!oldLayer || !oldLayer->AsPaintedLayer()) {
|
|
return nullptr;
|
|
}
|
|
|
|
if (!mPaintedLayersAvailableForRecycling.EnsureRemoved(
|
|
oldLayer->AsPaintedLayer())) {
|
|
// Not found.
|
|
return nullptr;
|
|
}
|
|
|
|
// Try to recycle the layer.
|
|
RefPtr<PaintedLayer> layer = oldLayer->AsPaintedLayer();
|
|
|
|
// Check if the layer hint has changed and whether or not the layer should
|
|
// be recreated because of it.
|
|
if (!layer->IsOptimizedFor(GetLayerCreationHint(aAnimatedGeometryRoot))) {
|
|
return nullptr;
|
|
}
|
|
|
|
bool didResetScrollPositionForLayerPixelAlignment = false;
|
|
PaintedDisplayItemLayerUserData* data =
|
|
RecyclePaintedLayer(layer, aAnimatedGeometryRoot,
|
|
didResetScrollPositionForLayerPixelAlignment);
|
|
PreparePaintedLayerForUse(layer, data, aAnimatedGeometryRoot, aReferenceFrame,
|
|
aTopLeft,
|
|
didResetScrollPositionForLayerPixelAlignment);
|
|
|
|
return layer.forget();
|
|
}
|
|
|
|
static void ReleaseLayerUserData(void* aData) {
|
|
PaintedDisplayItemLayerUserData* userData =
|
|
static_cast<PaintedDisplayItemLayerUserData*>(aData);
|
|
userData->Release();
|
|
}
|
|
|
|
already_AddRefed<PaintedLayer> ContainerState::CreatePaintedLayer(
|
|
PaintedLayerData* aData) {
|
|
LayerManager::PaintedLayerCreationHint creationHint =
|
|
GetLayerCreationHint(aData->mAnimatedGeometryRoot);
|
|
|
|
// Create a new painted layer
|
|
RefPtr<PaintedLayer> layer =
|
|
mManager->CreatePaintedLayerWithHint(creationHint);
|
|
if (!layer) {
|
|
return nullptr;
|
|
}
|
|
|
|
// Mark this layer as being used for painting display items
|
|
RefPtr<PaintedDisplayItemLayerUserData> userData =
|
|
new PaintedDisplayItemLayerUserData();
|
|
userData->mDisabledAlpha =
|
|
mParameters.mDisableSubpixelAntialiasingInDescendants;
|
|
userData.get()->AddRef();
|
|
layer->SetUserData(&gPaintedDisplayItemLayerUserData, userData,
|
|
ReleaseLayerUserData);
|
|
ResetScrollPositionForLayerPixelAlignment(aData->mAnimatedGeometryRoot);
|
|
|
|
PreparePaintedLayerForUse(layer, userData, aData->mAnimatedGeometryRoot,
|
|
aData->mReferenceFrame,
|
|
aData->mAnimatedGeometryRootOffset, true);
|
|
|
|
return layer.forget();
|
|
}
|
|
|
|
PaintedDisplayItemLayerUserData* ContainerState::RecyclePaintedLayer(
|
|
PaintedLayer* aLayer, AnimatedGeometryRoot* aAnimatedGeometryRoot,
|
|
bool& didResetScrollPositionForLayerPixelAlignment) {
|
|
// Clear clip rect and mask layer so we don't accidentally stay clipped.
|
|
// We will reapply any necessary clipping.
|
|
ResetLayerStateForRecycling(aLayer);
|
|
aLayer->ClearExtraDumpInfo();
|
|
|
|
PaintedDisplayItemLayerUserData* data =
|
|
static_cast<PaintedDisplayItemLayerUserData*>(
|
|
aLayer->GetUserData(&gPaintedDisplayItemLayerUserData));
|
|
NS_ASSERTION(data, "Recycled PaintedLayers must have user data");
|
|
|
|
// This gets called on recycled PaintedLayers that are going to be in the
|
|
// final layer tree, so it's a convenient time to invalidate the
|
|
// content that changed where we don't know what PaintedLayer it belonged
|
|
// to, or if we need to invalidate the entire layer, we can do that.
|
|
// This needs to be done before we update the PaintedLayer to its new
|
|
// transform. See nsGfxScrollFrame::InvalidateInternal, where
|
|
// we ensure that mInvalidPaintedContent is updated according to the
|
|
// scroll position as of the most recent paint.
|
|
if (!FuzzyEqual(data->mXScale, mParameters.mXScale, 0.00001f) ||
|
|
!FuzzyEqual(data->mYScale, mParameters.mYScale, 0.00001f) ||
|
|
data->mAppUnitsPerDevPixel != mAppUnitsPerDevPixel) {
|
|
#ifdef MOZ_DUMP_PAINTING
|
|
if (nsLayoutUtils::InvalidationDebuggingIsEnabled()) {
|
|
printf_stderr("Recycled layer %p changed scale\n", aLayer);
|
|
}
|
|
#endif
|
|
InvalidateEntirePaintedLayer(aLayer, aAnimatedGeometryRoot,
|
|
"recycled layer changed state");
|
|
didResetScrollPositionForLayerPixelAlignment = true;
|
|
}
|
|
if (!data->mRegionToInvalidate.IsEmpty()) {
|
|
#ifdef MOZ_DUMP_PAINTING
|
|
if (nsLayoutUtils::InvalidationDebuggingIsEnabled()) {
|
|
printf_stderr("Invalidating deleted frame content from layer %p\n",
|
|
aLayer);
|
|
}
|
|
#endif
|
|
aLayer->InvalidateRegion(data->mRegionToInvalidate);
|
|
#ifdef MOZ_DUMP_PAINTING
|
|
if (nsLayoutUtils::InvalidationDebuggingIsEnabled()) {
|
|
nsAutoCString str;
|
|
AppendToString(str, data->mRegionToInvalidate);
|
|
printf_stderr("Invalidating layer %p: %s\n", aLayer, str.get());
|
|
}
|
|
#endif
|
|
data->mRegionToInvalidate.SetEmpty();
|
|
}
|
|
return data;
|
|
}
|
|
|
|
void ContainerState::PreparePaintedLayerForUse(
|
|
PaintedLayer* aLayer, PaintedDisplayItemLayerUserData* aData,
|
|
AnimatedGeometryRoot* aAnimatedGeometryRoot,
|
|
const nsIFrame* aReferenceFrame, const nsPoint& aTopLeft,
|
|
bool didResetScrollPositionForLayerPixelAlignment) {
|
|
aData->mXScale = mParameters.mXScale;
|
|
aData->mYScale = mParameters.mYScale;
|
|
aData->mLastAnimatedGeometryRootOrigin = aData->mAnimatedGeometryRootOrigin;
|
|
aData->mAnimatedGeometryRootOrigin = aTopLeft;
|
|
aData->mAppUnitsPerDevPixel = mAppUnitsPerDevPixel;
|
|
aLayer->SetAllowResidualTranslation(mParameters.AllowResidualTranslation());
|
|
|
|
aData->mLastPaintOffset = GetTranslationForPaintedLayer(aLayer);
|
|
aData->mHasExplicitLastPaintOffset = true;
|
|
|
|
// Set up transform so that 0,0 in the PaintedLayer corresponds to the
|
|
// (pixel-snapped) top-left of the aAnimatedGeometryRoot.
|
|
nsPoint offset =
|
|
(*aAnimatedGeometryRoot)->GetOffsetToCrossDoc(aReferenceFrame);
|
|
nscoord appUnitsPerDevPixel =
|
|
(*aAnimatedGeometryRoot)->PresContext()->AppUnitsPerDevPixel();
|
|
gfxPoint scaledOffset(
|
|
NSAppUnitsToDoublePixels(offset.x, appUnitsPerDevPixel) *
|
|
mParameters.mXScale,
|
|
NSAppUnitsToDoublePixels(offset.y, appUnitsPerDevPixel) *
|
|
mParameters.mYScale);
|
|
// We call RoundToMatchResidual here so that the residual after rounding
|
|
// is close to aData->mAnimatedGeometryRootPosition if possible.
|
|
nsIntPoint pixOffset(
|
|
RoundToMatchResidual(scaledOffset.x,
|
|
aData->mAnimatedGeometryRootPosition.x),
|
|
RoundToMatchResidual(scaledOffset.y,
|
|
aData->mAnimatedGeometryRootPosition.y));
|
|
aData->mTranslation = pixOffset;
|
|
pixOffset += mParameters.mOffset;
|
|
Matrix matrix = Matrix::Translation(pixOffset.x, pixOffset.y);
|
|
aLayer->SetBaseTransform(Matrix4x4::From2D(matrix));
|
|
|
|
aData->mVisibilityComputedRegion.SetEmpty();
|
|
|
|
// Calculate exact position of the top-left of the active scrolled root.
|
|
// This might not be 0,0 due to the snapping in ScaleToNearestPixels.
|
|
gfxPoint animatedGeometryRootTopLeft =
|
|
scaledOffset - ThebesPoint(matrix.GetTranslation()) + mParameters.mOffset;
|
|
const bool disableAlpha =
|
|
mParameters.mDisableSubpixelAntialiasingInDescendants;
|
|
if (aData->mDisabledAlpha != disableAlpha) {
|
|
aData->mAnimatedGeometryRootPosition = animatedGeometryRootTopLeft;
|
|
InvalidateEntirePaintedLayer(aLayer, aAnimatedGeometryRoot,
|
|
"change of subpixel-AA");
|
|
aData->mDisabledAlpha = disableAlpha;
|
|
return;
|
|
}
|
|
|
|
// FIXME: Temporary workaround for bug 681192 and bug 724786.
|
|
#ifndef MOZ_WIDGET_ANDROID
|
|
// If it has changed, then we need to invalidate the entire layer since the
|
|
// pixels in the layer buffer have the content at a (subpixel) offset
|
|
// from what we need.
|
|
if (!animatedGeometryRootTopLeft.WithinEpsilonOf(
|
|
aData->mAnimatedGeometryRootPosition, SUBPIXEL_OFFSET_EPSILON)) {
|
|
aData->mAnimatedGeometryRootPosition = animatedGeometryRootTopLeft;
|
|
InvalidateEntirePaintedLayer(aLayer, aAnimatedGeometryRoot,
|
|
"subpixel offset");
|
|
} else if (didResetScrollPositionForLayerPixelAlignment) {
|
|
aData->mAnimatedGeometryRootPosition = animatedGeometryRootTopLeft;
|
|
}
|
|
#else
|
|
Unused << didResetScrollPositionForLayerPixelAlignment;
|
|
#endif
|
|
}
|
|
|
|
#if defined(DEBUG) || defined(MOZ_DUMP_PAINTING)
|
|
/**
|
|
* Returns the appunits per dev pixel for the item's frame
|
|
*/
|
|
static int32_t AppUnitsPerDevPixel(nsDisplayItem* aItem) {
|
|
// The underlying frame for zoom items is the root frame of the subdocument.
|
|
// But zoom display items report their bounds etc using the parent document's
|
|
// APD because zoom items act as a conversion layer between the two different
|
|
// APDs.
|
|
if (aItem->GetType() == DisplayItemType::TYPE_ZOOM) {
|
|
return static_cast<nsDisplayZoom*>(aItem)->GetParentAppUnitsPerDevPixel();
|
|
}
|
|
return aItem->Frame()->PresContext()->AppUnitsPerDevPixel();
|
|
}
|
|
#endif
|
|
|
|
/**
|
|
* Set the visible region for aLayer.
|
|
* aOuterVisibleRegion is the visible region relative to the parent layer.
|
|
* aLayerContentsVisibleRect, if non-null, is a rectangle in the layer's
|
|
* own coordinate system to which the layer's visible region is restricted.
|
|
* Consumes *aOuterVisibleRegion.
|
|
*/
|
|
static void SetOuterVisibleRegion(
|
|
Layer* aLayer, nsIntRegion* aOuterVisibleRegion,
|
|
const nsIntRect* aLayerContentsVisibleRect = nullptr,
|
|
bool aOuterUntransformed = false) {
|
|
Matrix4x4 transform = aLayer->GetTransform();
|
|
Matrix transform2D;
|
|
if (aOuterUntransformed) {
|
|
if (aLayerContentsVisibleRect) {
|
|
aOuterVisibleRegion->And(*aOuterVisibleRegion,
|
|
*aLayerContentsVisibleRect);
|
|
}
|
|
} else if (transform.Is2D(&transform2D) &&
|
|
!transform2D.HasNonIntegerTranslation()) {
|
|
aOuterVisibleRegion->MoveBy(-int(transform2D._31), -int(transform2D._32));
|
|
if (aLayerContentsVisibleRect) {
|
|
aOuterVisibleRegion->And(*aOuterVisibleRegion,
|
|
*aLayerContentsVisibleRect);
|
|
}
|
|
} else {
|
|
nsIntRect outerRect = aOuterVisibleRegion->GetBounds();
|
|
// if 'transform' is not invertible, then nothing will be displayed
|
|
// for the layer, so it doesn't really matter what we do here
|
|
Rect outerVisible(outerRect.x, outerRect.y, outerRect.width,
|
|
outerRect.height);
|
|
transform.Invert();
|
|
|
|
Rect layerContentsVisible = Rect::MaxIntRect();
|
|
|
|
if (aLayerContentsVisibleRect) {
|
|
NS_ASSERTION(aLayerContentsVisibleRect->width >= 0 &&
|
|
aLayerContentsVisibleRect->height >= 0,
|
|
"Bad layer contents rectangle");
|
|
// restrict to aLayerContentsVisibleRect before call GfxRectToIntRect,
|
|
// in case layerVisible is extremely large (as it can be when
|
|
// projecting through the inverse of a 3D transform)
|
|
layerContentsVisible = Rect(
|
|
aLayerContentsVisibleRect->x, aLayerContentsVisibleRect->y,
|
|
aLayerContentsVisibleRect->width, aLayerContentsVisibleRect->height);
|
|
}
|
|
|
|
Rect layerVisible =
|
|
transform.ProjectRectBounds(outerVisible, layerContentsVisible);
|
|
|
|
layerVisible.RoundOut();
|
|
|
|
IntRect intRect;
|
|
if (!layerVisible.ToIntRect(&intRect)) {
|
|
intRect = IntRect::MaxIntRect();
|
|
}
|
|
|
|
*aOuterVisibleRegion = intRect;
|
|
}
|
|
|
|
aLayer->SetVisibleRegion(
|
|
LayerIntRegion::FromUnknownRegion(*aOuterVisibleRegion));
|
|
}
|
|
|
|
void ContainerState::SetOuterVisibleRegionForLayer(
|
|
Layer* aLayer, const nsIntRegion& aOuterVisibleRegion,
|
|
const nsIntRect* aLayerContentsVisibleRect,
|
|
bool aOuterUntransformed) const {
|
|
nsIntRegion visRegion = aOuterVisibleRegion;
|
|
if (!aOuterUntransformed) {
|
|
visRegion.MoveBy(mParameters.mOffset);
|
|
}
|
|
SetOuterVisibleRegion(aLayer, &visRegion, aLayerContentsVisibleRect,
|
|
aOuterUntransformed);
|
|
}
|
|
|
|
nscolor ContainerState::FindOpaqueBackgroundColorInLayer(
|
|
const PaintedLayerData* aData, const nsIntRect& aRect,
|
|
bool* aOutIntersectsLayer) const {
|
|
*aOutIntersectsLayer = true;
|
|
|
|
// Scan the candidate's display items.
|
|
nsIntRect deviceRect = aRect;
|
|
nsRect appUnitRect = ToAppUnits(deviceRect, mAppUnitsPerDevPixel);
|
|
appUnitRect.ScaleInverseRoundOut(mParameters.mXScale, mParameters.mYScale);
|
|
|
|
for (auto& assignedItem : Reversed(aData->mAssignedDisplayItems)) {
|
|
if (assignedItem.HasOpacity() || assignedItem.HasTransform()) {
|
|
// We cannot easily calculate the opaque background color for items inside
|
|
// a flattened effect.
|
|
continue;
|
|
}
|
|
|
|
if (IsEffectEndMarker(assignedItem.mType)) {
|
|
// An optimization: the underlying display item for effect markers is the
|
|
// same for both start and end markers. Skip the effect end markers.
|
|
continue;
|
|
}
|
|
|
|
nsDisplayItem* item = assignedItem.mItem;
|
|
bool snap;
|
|
nsRect bounds = item->GetBounds(mBuilder, &snap);
|
|
if (snap && mSnappingEnabled) {
|
|
nsIntRect snappedBounds = ScaleToNearestPixels(bounds);
|
|
if (!snappedBounds.Intersects(deviceRect)) continue;
|
|
|
|
if (!snappedBounds.Contains(deviceRect)) return NS_RGBA(0, 0, 0, 0);
|
|
|
|
} else {
|
|
// The layer's visible rect is already (close enough to) pixel
|
|
// aligned, so no need to round out and in here.
|
|
if (!bounds.Intersects(appUnitRect)) continue;
|
|
|
|
if (!bounds.Contains(appUnitRect)) return NS_RGBA(0, 0, 0, 0);
|
|
}
|
|
|
|
if (item->IsInvisibleInRect(appUnitRect)) {
|
|
continue;
|
|
}
|
|
|
|
if (item->GetClip().IsRectAffectedByClip(deviceRect, mParameters.mXScale,
|
|
mParameters.mYScale,
|
|
mAppUnitsPerDevPixel)) {
|
|
return NS_RGBA(0, 0, 0, 0);
|
|
}
|
|
|
|
MOZ_ASSERT(!assignedItem.HasOpacity() && !assignedItem.HasTransform());
|
|
Maybe<nscolor> color = item->IsUniform(mBuilder);
|
|
|
|
if (color && NS_GET_A(*color) == 255) {
|
|
return *color;
|
|
}
|
|
|
|
return NS_RGBA(0, 0, 0, 0);
|
|
}
|
|
|
|
*aOutIntersectsLayer = false;
|
|
return NS_RGBA(0, 0, 0, 0);
|
|
}
|
|
|
|
nscolor PaintedLayerDataNode::FindOpaqueBackgroundColor(
|
|
const nsIntRegion& aTargetVisibleRegion, int32_t aUnderIndex) const {
|
|
if (aUnderIndex == ABOVE_TOP) {
|
|
aUnderIndex = mPaintedLayerDataStack.Length();
|
|
}
|
|
for (int32_t i = aUnderIndex - 1; i >= 0; --i) {
|
|
const PaintedLayerData* candidate = &mPaintedLayerDataStack[i];
|
|
if (candidate->VisibleAboveRegionIntersects(aTargetVisibleRegion)) {
|
|
// Some non-PaintedLayer content between target and candidate; this is
|
|
// hopeless
|
|
return NS_RGBA(0, 0, 0, 0);
|
|
}
|
|
|
|
if (!candidate->VisibleRegionIntersects(aTargetVisibleRegion)) {
|
|
// The layer doesn't intersect our target, ignore it and move on
|
|
continue;
|
|
}
|
|
|
|
bool intersectsLayer = true;
|
|
nsIntRect rect = aTargetVisibleRegion.GetBounds();
|
|
nscolor color = mTree.ContState().FindOpaqueBackgroundColorInLayer(
|
|
candidate, rect, &intersectsLayer);
|
|
if (!intersectsLayer) {
|
|
continue;
|
|
}
|
|
return color;
|
|
}
|
|
if (mAllDrawingAboveBackground ||
|
|
!mVisibleAboveBackgroundRegion.Intersect(aTargetVisibleRegion)
|
|
.IsEmpty()) {
|
|
// Some non-PaintedLayer content is between this node's background and
|
|
// target.
|
|
return NS_RGBA(0, 0, 0, 0);
|
|
}
|
|
return FindOpaqueBackgroundColorInParentNode();
|
|
}
|
|
|
|
nscolor PaintedLayerDataNode::FindOpaqueBackgroundColorCoveringEverything()
|
|
const {
|
|
if (!mPaintedLayerDataStack.IsEmpty() || mAllDrawingAboveBackground ||
|
|
!mVisibleAboveBackgroundRegion.IsEmpty()) {
|
|
return NS_RGBA(0, 0, 0, 0);
|
|
}
|
|
return FindOpaqueBackgroundColorInParentNode();
|
|
}
|
|
|
|
nscolor PaintedLayerDataNode::FindOpaqueBackgroundColorInParentNode() const {
|
|
if (mParent) {
|
|
if (mHasClip) {
|
|
// Check whether our parent node has uniform content behind our whole
|
|
// clip.
|
|
// There's one tricky case here: If our parent node is also a scrollable,
|
|
// and is currently scrolled in such a way that this inner one is
|
|
// clipped by it, then it's not really clear how we should determine
|
|
// whether we have a uniform background in the parent: There might be
|
|
// non-uniform content in the parts that our scroll port covers in the
|
|
// parent and that are currently outside the parent's clip.
|
|
// For now, we'll fail to pull a background color in that case.
|
|
return mParent->FindOpaqueBackgroundColor(mClipRect);
|
|
}
|
|
return mParent->FindOpaqueBackgroundColorCoveringEverything();
|
|
}
|
|
// We are the root.
|
|
return mTree.UniformBackgroundColor();
|
|
}
|
|
|
|
bool PaintedLayerData::CanOptimizeToImageLayer(nsDisplayListBuilder* aBuilder) {
|
|
if (!mImage) {
|
|
return false;
|
|
}
|
|
|
|
return mImage->CanOptimizeToImageLayer(mLayer->Manager(), aBuilder);
|
|
}
|
|
|
|
already_AddRefed<ImageContainer> PaintedLayerData::GetContainerForImageLayer(
|
|
nsDisplayListBuilder* aBuilder) {
|
|
if (!mImage) {
|
|
return nullptr;
|
|
}
|
|
|
|
return mImage->GetContainer(mLayer->Manager(), aBuilder);
|
|
}
|
|
|
|
PaintedLayerDataNode::PaintedLayerDataNode(
|
|
PaintedLayerDataTree& aTree, PaintedLayerDataNode* aParent,
|
|
AnimatedGeometryRoot* aAnimatedGeometryRoot)
|
|
: mTree(aTree),
|
|
mParent(aParent),
|
|
mAnimatedGeometryRoot(aAnimatedGeometryRoot),
|
|
mAllDrawingAboveBackground(false) {
|
|
MOZ_ASSERT(nsLayoutUtils::IsAncestorFrameCrossDoc(
|
|
mTree.Builder()->RootReferenceFrame(), *mAnimatedGeometryRoot));
|
|
mHasClip = mTree.IsClippedWithRespectToParentAnimatedGeometryRoot(
|
|
mAnimatedGeometryRoot, &mClipRect);
|
|
}
|
|
|
|
PaintedLayerDataNode::~PaintedLayerDataNode() {
|
|
MOZ_ASSERT(mPaintedLayerDataStack.IsEmpty());
|
|
MOZ_ASSERT(mChildren.IsEmpty());
|
|
}
|
|
|
|
PaintedLayerDataNode* PaintedLayerDataNode::AddChildNodeFor(
|
|
AnimatedGeometryRoot* aAnimatedGeometryRoot) {
|
|
MOZ_ASSERT(aAnimatedGeometryRoot->mParentAGR == mAnimatedGeometryRoot);
|
|
UniquePtr<PaintedLayerDataNode> child =
|
|
MakeUnique<PaintedLayerDataNode>(mTree, this, aAnimatedGeometryRoot);
|
|
mChildren.AppendElement(std::move(child));
|
|
return mChildren.LastElement().get();
|
|
}
|
|
|
|
template <typename NewPaintedLayerCallbackType>
|
|
PaintedLayerData* PaintedLayerDataNode::FindPaintedLayerFor(
|
|
const nsIntRect& aVisibleRect, const bool aBackfaceHidden,
|
|
const ActiveScrolledRoot* aASR, const DisplayItemClipChain* aClipChain,
|
|
NewPaintedLayerCallbackType aNewPaintedLayerCallback) {
|
|
if (!mPaintedLayerDataStack.IsEmpty()) {
|
|
PaintedLayerData* lowestUsableLayer = nullptr;
|
|
for (auto& data : Reversed(mPaintedLayerDataStack)) {
|
|
if (data.mVisibleAboveRegion.Intersects(aVisibleRect)) {
|
|
break;
|
|
}
|
|
if (data.mBackfaceHidden == aBackfaceHidden && data.mASR == aASR &&
|
|
data.mClipChain == aClipChain) {
|
|
lowestUsableLayer = &data;
|
|
}
|
|
// Also check whether the event-regions intersect the visible rect,
|
|
// unless we're in an inactive layer, in which case the event-regions
|
|
// will be hoisted out into their own layer.
|
|
// For performance reasons, we check the intersection with the bounds
|
|
// of the event-regions.
|
|
if (!mTree.ContState().IsInInactiveLayer() &&
|
|
(data.mScaledHitRegionBounds.Intersects(aVisibleRect) ||
|
|
data.mScaledMaybeHitRegionBounds.Intersects(aVisibleRect))) {
|
|
break;
|
|
}
|
|
// If the visible region intersects with the current layer then we
|
|
// can't possibly use any of the layers below it, so stop the search
|
|
// now.
|
|
//
|
|
// If we're trying to minimize painted layer size and we don't
|
|
// intersect the current visible region, then make sure we don't
|
|
// use this painted layer.
|
|
if (data.mVisibleRegion.Intersects(aVisibleRect)) {
|
|
break;
|
|
}
|
|
|
|
if (StaticPrefs::layout_smaller_painted_layers()) {
|
|
lowestUsableLayer = nullptr;
|
|
}
|
|
}
|
|
if (lowestUsableLayer) {
|
|
return lowestUsableLayer;
|
|
}
|
|
}
|
|
PaintedLayerData* data = mPaintedLayerDataStack.AppendElement();
|
|
aNewPaintedLayerCallback(data);
|
|
|
|
return data;
|
|
}
|
|
|
|
void PaintedLayerDataNode::FinishChildrenIntersecting(const nsIntRect& aRect) {
|
|
for (int32_t i = mChildren.Length() - 1; i >= 0; i--) {
|
|
if (mChildren[i]->Intersects(aRect)) {
|
|
mChildren[i]->Finish(true);
|
|
mChildren.RemoveElementAt(i);
|
|
}
|
|
}
|
|
}
|
|
|
|
void PaintedLayerDataNode::FinishAllChildren(
|
|
bool aThisNodeNeedsAccurateVisibleAboveRegion) {
|
|
for (int32_t i = mChildren.Length() - 1; i >= 0; i--) {
|
|
mChildren[i]->Finish(aThisNodeNeedsAccurateVisibleAboveRegion);
|
|
}
|
|
mChildren.Clear();
|
|
}
|
|
|
|
void PaintedLayerDataNode::Finish(bool aParentNeedsAccurateVisibleAboveRegion) {
|
|
// Skip "visible above region" maintenance, because this node is going away.
|
|
FinishAllChildren(false);
|
|
|
|
PopAllPaintedLayerData();
|
|
|
|
if (mParent && aParentNeedsAccurateVisibleAboveRegion) {
|
|
if (mHasClip) {
|
|
mParent->AddToVisibleAboveRegion(mClipRect);
|
|
} else {
|
|
mParent->SetAllDrawingAbove();
|
|
}
|
|
}
|
|
mTree.NodeWasFinished(mAnimatedGeometryRoot);
|
|
}
|
|
|
|
void PaintedLayerDataNode::AddToVisibleAboveRegion(const nsIntRect& aRect) {
|
|
nsIntRegion& visibleAboveRegion =
|
|
mPaintedLayerDataStack.IsEmpty()
|
|
? mVisibleAboveBackgroundRegion
|
|
: mPaintedLayerDataStack.LastElement().mVisibleAboveRegion;
|
|
visibleAboveRegion.Or(visibleAboveRegion, aRect);
|
|
visibleAboveRegion.SimplifyOutward(8);
|
|
}
|
|
|
|
void PaintedLayerDataNode::SetAllDrawingAbove() {
|
|
PopAllPaintedLayerData();
|
|
mAllDrawingAboveBackground = true;
|
|
mVisibleAboveBackgroundRegion.SetEmpty();
|
|
}
|
|
|
|
void PaintedLayerDataNode::PopAllPaintedLayerData() {
|
|
for (int32_t index = mPaintedLayerDataStack.Length() - 1; index >= 0;
|
|
index--) {
|
|
PaintedLayerData& data = mPaintedLayerDataStack[index];
|
|
mTree.ContState().FinishPaintedLayerData(data, [this, &data, index]() {
|
|
return this->FindOpaqueBackgroundColor(data.mVisibleRegion, index);
|
|
});
|
|
}
|
|
mPaintedLayerDataStack.Clear();
|
|
}
|
|
|
|
void PaintedLayerDataTree::InitializeForInactiveLayer(
|
|
AnimatedGeometryRoot* aAnimatedGeometryRoot) {
|
|
mForInactiveLayer = true;
|
|
mRoot.emplace(*this, nullptr, aAnimatedGeometryRoot);
|
|
}
|
|
|
|
nsDisplayListBuilder* PaintedLayerDataTree::Builder() const {
|
|
return mContainerState.Builder();
|
|
}
|
|
|
|
void PaintedLayerDataTree::Finish() {
|
|
if (mRoot) {
|
|
mRoot->Finish(false);
|
|
}
|
|
MOZ_ASSERT(mNodes.Count() == 0);
|
|
mRoot.reset();
|
|
}
|
|
|
|
void PaintedLayerDataTree::NodeWasFinished(
|
|
AnimatedGeometryRoot* aAnimatedGeometryRoot) {
|
|
mNodes.Remove(aAnimatedGeometryRoot);
|
|
}
|
|
|
|
void PaintedLayerDataTree::AddingOwnLayer(
|
|
AnimatedGeometryRoot* aAnimatedGeometryRoot, const nsIntRect* aRect,
|
|
nscolor* aOutUniformBackgroundColor) {
|
|
PaintedLayerDataNode* node = nullptr;
|
|
if (mForInactiveLayer) {
|
|
node = mRoot.ptr();
|
|
} else {
|
|
FinishPotentiallyIntersectingNodes(aAnimatedGeometryRoot, aRect);
|
|
node = EnsureNodeFor(aAnimatedGeometryRoot);
|
|
}
|
|
if (aRect) {
|
|
if (aOutUniformBackgroundColor) {
|
|
*aOutUniformBackgroundColor = node->FindOpaqueBackgroundColor(*aRect);
|
|
}
|
|
node->AddToVisibleAboveRegion(*aRect);
|
|
} else {
|
|
if (aOutUniformBackgroundColor) {
|
|
*aOutUniformBackgroundColor =
|
|
node->FindOpaqueBackgroundColorCoveringEverything();
|
|
}
|
|
node->SetAllDrawingAbove();
|
|
}
|
|
}
|
|
|
|
template <typename NewPaintedLayerCallbackType>
|
|
PaintedLayerData* PaintedLayerDataTree::FindPaintedLayerFor(
|
|
AnimatedGeometryRoot* aAnimatedGeometryRoot, const ActiveScrolledRoot* aASR,
|
|
const DisplayItemClipChain* aClipChain, const nsIntRect& aVisibleRect,
|
|
const bool aBackfaceHidden,
|
|
NewPaintedLayerCallbackType aNewPaintedLayerCallback) {
|
|
const nsIntRect* bounds = &aVisibleRect;
|
|
PaintedLayerDataNode* node = nullptr;
|
|
if (mForInactiveLayer) {
|
|
node = mRoot.ptr();
|
|
} else {
|
|
FinishPotentiallyIntersectingNodes(aAnimatedGeometryRoot, bounds);
|
|
node = EnsureNodeFor(aAnimatedGeometryRoot);
|
|
}
|
|
|
|
PaintedLayerData* data =
|
|
node->FindPaintedLayerFor(aVisibleRect, aBackfaceHidden, aASR, aClipChain,
|
|
aNewPaintedLayerCallback);
|
|
return data;
|
|
}
|
|
|
|
void PaintedLayerDataTree::FinishPotentiallyIntersectingNodes(
|
|
AnimatedGeometryRoot* aAnimatedGeometryRoot, const nsIntRect* aRect) {
|
|
AnimatedGeometryRoot* ancestorThatIsChildOfCommonAncestor = nullptr;
|
|
PaintedLayerDataNode* ancestorNode = FindNodeForAncestorAnimatedGeometryRoot(
|
|
aAnimatedGeometryRoot, &ancestorThatIsChildOfCommonAncestor);
|
|
if (!ancestorNode) {
|
|
// None of our ancestors are in the tree. This should only happen if this
|
|
// is the very first item we're looking at.
|
|
MOZ_ASSERT(!mRoot);
|
|
return;
|
|
}
|
|
|
|
if (ancestorNode->GetAnimatedGeometryRoot() == aAnimatedGeometryRoot) {
|
|
// aAnimatedGeometryRoot already has a node in the tree.
|
|
// This is the common case.
|
|
MOZ_ASSERT(!ancestorThatIsChildOfCommonAncestor);
|
|
if (aRect) {
|
|
ancestorNode->FinishChildrenIntersecting(*aRect);
|
|
} else {
|
|
ancestorNode->FinishAllChildren();
|
|
}
|
|
return;
|
|
}
|
|
|
|
// We have found an existing ancestor, but it's a proper ancestor of our
|
|
// animated geometry root.
|
|
// ancestorThatIsChildOfCommonAncestor is the last animated geometry root
|
|
// encountered on the way up from aAnimatedGeometryRoot to ancestorNode.
|
|
MOZ_ASSERT(ancestorThatIsChildOfCommonAncestor);
|
|
MOZ_ASSERT(nsLayoutUtils::IsAncestorFrameCrossDoc(
|
|
*ancestorThatIsChildOfCommonAncestor, *aAnimatedGeometryRoot));
|
|
MOZ_ASSERT(ancestorThatIsChildOfCommonAncestor->mParentAGR ==
|
|
ancestorNode->GetAnimatedGeometryRoot());
|
|
|
|
// ancestorThatIsChildOfCommonAncestor is not in the tree yet!
|
|
MOZ_ASSERT(!mNodes.Get(ancestorThatIsChildOfCommonAncestor));
|
|
|
|
// We're about to add a node for ancestorThatIsChildOfCommonAncestor, so we
|
|
// finish all intersecting siblings.
|
|
nsIntRect clip;
|
|
if (IsClippedWithRespectToParentAnimatedGeometryRoot(
|
|
ancestorThatIsChildOfCommonAncestor, &clip)) {
|
|
ancestorNode->FinishChildrenIntersecting(clip);
|
|
} else {
|
|
ancestorNode->FinishAllChildren();
|
|
}
|
|
}
|
|
|
|
PaintedLayerDataNode* PaintedLayerDataTree::EnsureNodeFor(
|
|
AnimatedGeometryRoot* aAnimatedGeometryRoot) {
|
|
MOZ_ASSERT(aAnimatedGeometryRoot);
|
|
PaintedLayerDataNode* node = mNodes.Get(aAnimatedGeometryRoot);
|
|
if (node) {
|
|
return node;
|
|
}
|
|
|
|
AnimatedGeometryRoot* parentAnimatedGeometryRoot =
|
|
aAnimatedGeometryRoot->mParentAGR;
|
|
if (!parentAnimatedGeometryRoot) {
|
|
MOZ_ASSERT(!mRoot);
|
|
MOZ_ASSERT(*aAnimatedGeometryRoot == Builder()->RootReferenceFrame());
|
|
mRoot.emplace(*this, nullptr, aAnimatedGeometryRoot);
|
|
node = mRoot.ptr();
|
|
} else {
|
|
PaintedLayerDataNode* parentNode =
|
|
EnsureNodeFor(parentAnimatedGeometryRoot);
|
|
MOZ_ASSERT(parentNode);
|
|
node = parentNode->AddChildNodeFor(aAnimatedGeometryRoot);
|
|
}
|
|
MOZ_ASSERT(node);
|
|
mNodes.Put(aAnimatedGeometryRoot, node);
|
|
return node;
|
|
}
|
|
|
|
bool PaintedLayerDataTree::IsClippedWithRespectToParentAnimatedGeometryRoot(
|
|
AnimatedGeometryRoot* aAnimatedGeometryRoot, nsIntRect* aOutClip) {
|
|
if (mForInactiveLayer) {
|
|
return false;
|
|
}
|
|
nsIScrollableFrame* scrollableFrame =
|
|
nsLayoutUtils::GetScrollableFrameFor(*aAnimatedGeometryRoot);
|
|
if (!scrollableFrame) {
|
|
return false;
|
|
}
|
|
nsIFrame* scrollFrame = do_QueryFrame(scrollableFrame);
|
|
nsRect scrollPort = scrollableFrame->GetScrollPortRect() +
|
|
Builder()->ToReferenceFrame(scrollFrame);
|
|
*aOutClip = mContainerState.ScaleToNearestPixels(scrollPort);
|
|
return true;
|
|
}
|
|
|
|
PaintedLayerDataNode*
|
|
PaintedLayerDataTree::FindNodeForAncestorAnimatedGeometryRoot(
|
|
AnimatedGeometryRoot* aAnimatedGeometryRoot,
|
|
AnimatedGeometryRoot** aOutAncestorChild) {
|
|
if (!aAnimatedGeometryRoot) {
|
|
return nullptr;
|
|
}
|
|
PaintedLayerDataNode* node = mNodes.Get(aAnimatedGeometryRoot);
|
|
if (node) {
|
|
return node;
|
|
}
|
|
*aOutAncestorChild = aAnimatedGeometryRoot;
|
|
return FindNodeForAncestorAnimatedGeometryRoot(
|
|
aAnimatedGeometryRoot->mParentAGR, aOutAncestorChild);
|
|
}
|
|
|
|
static bool CanOptimizeAwayPaintedLayer(PaintedLayerData* aData,
|
|
FrameLayerBuilder* aLayerBuilder) {
|
|
if (!aLayerBuilder->IsBuildingRetainedLayers()) {
|
|
return false;
|
|
}
|
|
|
|
// If there's no painted layer with valid content in it that we can reuse,
|
|
// always create a color or image layer (and potentially throw away an
|
|
// existing completely invalid painted layer).
|
|
if (aData->mLayer->GetValidRegion().IsEmpty()) {
|
|
return true;
|
|
}
|
|
|
|
// There is an existing painted layer we can reuse. Throwing it away can make
|
|
// compositing cheaper (see bug 946952), but it might cause us to re-allocate
|
|
// the painted layer frequently due to an animation. So we only discard it if
|
|
// we're in tree compression mode, which is triggered at a low frequency.
|
|
return aLayerBuilder->CheckInLayerTreeCompressionMode();
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
static int32_t FindIndexOfLayerIn(nsTArray<NewLayerEntry>& aArray,
|
|
Layer* aLayer) {
|
|
for (uint32_t i = 0; i < aArray.Length(); ++i) {
|
|
if (aArray[i].mLayer == aLayer) {
|
|
return i;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
#endif
|
|
|
|
already_AddRefed<Layer> ContainerState::PrepareImageLayer(
|
|
PaintedLayerData* aData) {
|
|
RefPtr<ImageContainer> imageContainer =
|
|
aData->GetContainerForImageLayer(mBuilder);
|
|
if (!imageContainer) {
|
|
return nullptr;
|
|
}
|
|
|
|
RefPtr<ImageLayer> imageLayer = CreateOrRecycleImageLayer(aData->mLayer);
|
|
imageLayer->SetContainer(imageContainer);
|
|
aData->mImage->ConfigureLayer(imageLayer, mParameters);
|
|
imageLayer->SetPostScale(mParameters.mXScale, mParameters.mYScale);
|
|
|
|
if (aData->mItemClip->HasClip()) {
|
|
ParentLayerIntRect clip = ViewAs<ParentLayerPixel>(
|
|
ScaleToNearestPixels(aData->mItemClip->GetClipRect()));
|
|
clip.MoveBy(ViewAs<ParentLayerPixel>(mParameters.mOffset));
|
|
imageLayer->SetClipRect(Some(clip));
|
|
} else {
|
|
imageLayer->SetClipRect(Nothing());
|
|
}
|
|
|
|
FLB_LOG_PAINTED_LAYER_DECISION(aData, " Selected image layer=%p\n",
|
|
imageLayer.get());
|
|
|
|
return imageLayer.forget();
|
|
}
|
|
|
|
already_AddRefed<Layer> ContainerState::PrepareColorLayer(
|
|
PaintedLayerData* aData) {
|
|
RefPtr<ColorLayer> colorLayer = CreateOrRecycleColorLayer(aData->mLayer);
|
|
colorLayer->SetColor(Color::FromABGR(aData->mSolidColor));
|
|
|
|
// Copy transform
|
|
colorLayer->SetBaseTransform(aData->mLayer->GetBaseTransform());
|
|
colorLayer->SetPostScale(aData->mLayer->GetPostXScale(),
|
|
aData->mLayer->GetPostYScale());
|
|
|
|
nsIntRect visibleRect = aData->mVisibleRegion.GetBounds();
|
|
visibleRect.MoveBy(-GetTranslationForPaintedLayer(aData->mLayer));
|
|
colorLayer->SetBounds(visibleRect);
|
|
colorLayer->SetClipRect(Nothing());
|
|
|
|
FLB_LOG_PAINTED_LAYER_DECISION(aData, " Selected color layer=%p\n",
|
|
colorLayer.get());
|
|
|
|
return colorLayer.forget();
|
|
}
|
|
|
|
static void SetBackfaceHiddenForLayer(bool aBackfaceHidden, Layer* aLayer) {
|
|
if (aBackfaceHidden) {
|
|
aLayer->SetContentFlags(aLayer->GetContentFlags() |
|
|
Layer::CONTENT_BACKFACE_HIDDEN);
|
|
} else {
|
|
aLayer->SetContentFlags(aLayer->GetContentFlags() &
|
|
~Layer::CONTENT_BACKFACE_HIDDEN);
|
|
}
|
|
}
|
|
|
|
template <typename FindOpaqueBackgroundColorCallbackType>
|
|
void ContainerState::FinishPaintedLayerData(
|
|
PaintedLayerData& aData,
|
|
FindOpaqueBackgroundColorCallbackType aFindOpaqueBackgroundColor) {
|
|
PaintedLayerData* data = &aData;
|
|
|
|
if (!data->mLayer) {
|
|
// No layer was recycled, so we create a new one.
|
|
RefPtr<PaintedLayer> paintedLayer = CreatePaintedLayer(data);
|
|
data->mLayer = paintedLayer;
|
|
|
|
NS_ASSERTION(FindIndexOfLayerIn(mNewChildLayers, paintedLayer) < 0,
|
|
"Layer already in list???");
|
|
mNewChildLayers[data->mNewChildLayersIndex].mLayer = paintedLayer.forget();
|
|
}
|
|
|
|
PaintedDisplayItemLayerUserData* userData =
|
|
GetPaintedDisplayItemLayerUserData(data->mLayer);
|
|
NS_ASSERTION(userData, "where did our user data go?");
|
|
userData->mLastItemCount = data->mAssignedDisplayItems.size();
|
|
|
|
NewLayerEntry* newLayerEntry = &mNewChildLayers[data->mNewChildLayersIndex];
|
|
|
|
RefPtr<Layer> layer;
|
|
bool canOptimizeToImageLayer = data->CanOptimizeToImageLayer(mBuilder);
|
|
|
|
FLB_LOG_PAINTED_LAYER_DECISION(data, "Selecting layer for pld=%p\n", data);
|
|
FLB_LOG_PAINTED_LAYER_DECISION(
|
|
data, " Solid=%i, hasImage=%c, canOptimizeAwayPaintedLayer=%i\n",
|
|
data->mIsSolidColorInVisibleRegion, canOptimizeToImageLayer ? 'y' : 'n',
|
|
CanOptimizeAwayPaintedLayer(data, mLayerBuilder));
|
|
|
|
if ((data->mIsSolidColorInVisibleRegion || canOptimizeToImageLayer) &&
|
|
CanOptimizeAwayPaintedLayer(data, mLayerBuilder)) {
|
|
NS_ASSERTION(
|
|
!(data->mIsSolidColorInVisibleRegion && canOptimizeToImageLayer),
|
|
"Can't be a solid color as well as an image!");
|
|
|
|
layer = canOptimizeToImageLayer ? PrepareImageLayer(data)
|
|
: PrepareColorLayer(data);
|
|
|
|
if (layer) {
|
|
NS_ASSERTION(FindIndexOfLayerIn(mNewChildLayers, layer) < 0,
|
|
"Layer already in list???");
|
|
NS_ASSERTION(newLayerEntry->mLayer == data->mLayer,
|
|
"Painted layer at wrong index");
|
|
// Store optimized layer in reserved slot
|
|
NewLayerEntry* paintedLayerEntry = newLayerEntry;
|
|
newLayerEntry = &mNewChildLayers[data->mNewChildLayersIndex + 1];
|
|
NS_ASSERTION(!newLayerEntry->mLayer, "Slot already occupied?");
|
|
newLayerEntry->mLayer = layer;
|
|
newLayerEntry->mAnimatedGeometryRoot = data->mAnimatedGeometryRoot;
|
|
newLayerEntry->mASR = paintedLayerEntry->mASR;
|
|
newLayerEntry->mClipChain = paintedLayerEntry->mClipChain;
|
|
newLayerEntry->mScrollMetadataASR = paintedLayerEntry->mScrollMetadataASR;
|
|
|
|
// Hide the PaintedLayer. We leave it in the layer tree so that we
|
|
// can find and recycle it later.
|
|
ParentLayerIntRect emptyRect;
|
|
data->mLayer->SetClipRect(Some(emptyRect));
|
|
data->mLayer->SetVisibleRegion(LayerIntRegion());
|
|
data->mLayer->InvalidateWholeLayer();
|
|
data->mLayer->SetEventRegions(EventRegions());
|
|
}
|
|
}
|
|
|
|
if (!layer) {
|
|
// We couldn't optimize to an image layer or a color layer above.
|
|
layer = data->mLayer;
|
|
layer->SetClipRect(Nothing());
|
|
FLB_LOG_PAINTED_LAYER_DECISION(data, " Selected painted layer=%p\n",
|
|
layer.get());
|
|
}
|
|
|
|
for (auto& item : data->mAssignedDisplayItems) {
|
|
MOZ_ASSERT(item.mItem->GetType() !=
|
|
DisplayItemType::TYPE_COMPOSITOR_HITTEST_INFO);
|
|
|
|
if (IsEffectEndMarker(item.mType)) {
|
|
// Do not invalidate for end markers.
|
|
continue;
|
|
}
|
|
|
|
InvalidateForLayerChange(item.mItem, data->mLayer, item.mDisplayItemData);
|
|
mLayerBuilder->AddPaintedDisplayItem(data, item, layer);
|
|
item.mDisplayItemData = nullptr;
|
|
}
|
|
|
|
if (mLayerBuilder->IsBuildingRetainedLayers()) {
|
|
newLayerEntry->mVisibleRegion = data->mVisibleRegion;
|
|
newLayerEntry->mOpaqueRegion = data->mOpaqueRegion;
|
|
newLayerEntry->mHideAllLayersBelow = data->mHideAllLayersBelow;
|
|
newLayerEntry->mOpaqueForAnimatedGeometryRootParent =
|
|
data->mOpaqueForAnimatedGeometryRootParent;
|
|
} else {
|
|
SetOuterVisibleRegionForLayer(layer, data->mVisibleRegion);
|
|
}
|
|
|
|
#ifdef MOZ_DUMP_PAINTING
|
|
if (!data->mLog.IsEmpty()) {
|
|
if (PaintedLayerData* containingPld =
|
|
mLayerBuilder->GetContainingPaintedLayerData()) {
|
|
containingPld->mLayer->AddExtraDumpInfo(nsCString(data->mLog));
|
|
} else {
|
|
layer->AddExtraDumpInfo(nsCString(data->mLog));
|
|
}
|
|
}
|
|
#endif
|
|
|
|
mLayerBuilder->AddPaintedLayerItemsEntry(userData);
|
|
|
|
nsIntRegion transparentRegion;
|
|
transparentRegion.Sub(data->mVisibleRegion, data->mOpaqueRegion);
|
|
bool isOpaque = transparentRegion.IsEmpty();
|
|
// For translucent PaintedLayers, try to find an opaque background
|
|
// color that covers the entire area beneath it so we can pull that
|
|
// color into this layer to make it opaque.
|
|
if (layer == data->mLayer) {
|
|
nscolor backgroundColor = NS_RGBA(0, 0, 0, 0);
|
|
if (!isOpaque) {
|
|
backgroundColor = aFindOpaqueBackgroundColor();
|
|
if (NS_GET_A(backgroundColor) == 255) {
|
|
isOpaque = true;
|
|
}
|
|
}
|
|
|
|
// Store the background color
|
|
if (userData->mForcedBackgroundColor != backgroundColor) {
|
|
// Invalidate the entire target PaintedLayer since we're changing
|
|
// the background color
|
|
#ifdef MOZ_DUMP_PAINTING
|
|
if (nsLayoutUtils::InvalidationDebuggingIsEnabled()) {
|
|
printf_stderr(
|
|
"Forced background color has changed from #%08X to #%08X "
|
|
"on layer %p\n",
|
|
userData->mForcedBackgroundColor, backgroundColor, data->mLayer);
|
|
nsAutoCString str;
|
|
AppendToString(str, data->mLayer->GetValidRegion());
|
|
printf_stderr("Invalidating layer %p: %s\n", data->mLayer, str.get());
|
|
}
|
|
#endif
|
|
data->mLayer->InvalidateWholeLayer();
|
|
}
|
|
userData->mForcedBackgroundColor = backgroundColor;
|
|
} else {
|
|
// mask layer for image and color layers
|
|
SetupMaskLayer(layer, *data->mItemClip);
|
|
}
|
|
|
|
uint32_t flags = 0;
|
|
nsIWidget* widget = mContainerReferenceFrame->PresContext()->GetRootWidget();
|
|
// See bug 941095. Not quite ready to disable this.
|
|
bool hidpi = false && widget && widget->GetDefaultScale().scale >= 2;
|
|
if (hidpi) {
|
|
flags |= Layer::CONTENT_DISABLE_SUBPIXEL_AA;
|
|
}
|
|
if (isOpaque && !data->mForceTransparentSurface) {
|
|
flags |= Layer::CONTENT_OPAQUE;
|
|
} else if (data->mNeedComponentAlpha && !hidpi) {
|
|
flags |= Layer::CONTENT_COMPONENT_ALPHA;
|
|
}
|
|
layer->SetContentFlags(flags);
|
|
|
|
userData->mItems = std::move(data->mAssignedDisplayItems);
|
|
userData->mContainerLayerFrame = GetContainerFrame();
|
|
|
|
PaintedLayerData* containingPaintedLayerData =
|
|
mLayerBuilder->GetContainingPaintedLayerData();
|
|
// If we're building layers for an inactive layer, the event regions are
|
|
// clipped to the inactive layer's clip prior to being combined into the
|
|
// event regions of the containing PLD.
|
|
// For the dispatch-to-content and maybe-hit regions, rounded corners on
|
|
// the clip are ignored, since these are approximate regions. For the
|
|
// remaining regions, rounded corners in the clip cause the region to
|
|
// be combined into the corresponding "imprecise" region of the
|
|
// containing's PLD (e.g. the maybe-hit region instead of the hit region).
|
|
const DisplayItemClip* inactiveLayerClip =
|
|
mLayerBuilder->GetInactiveLayerClip();
|
|
if (containingPaintedLayerData) {
|
|
if (!data->mDispatchToContentHitRegion.GetBounds().IsEmpty()) {
|
|
nsRect rect = nsLayoutUtils::TransformFrameRectToAncestor(
|
|
mContainerReferenceFrame,
|
|
data->mDispatchToContentHitRegion.GetBounds(),
|
|
containingPaintedLayerData->mReferenceFrame);
|
|
if (inactiveLayerClip) {
|
|
rect = inactiveLayerClip->ApplyNonRoundedIntersection(rect);
|
|
}
|
|
containingPaintedLayerData->mDispatchToContentHitRegion.Or(
|
|
containingPaintedLayerData->mDispatchToContentHitRegion, rect);
|
|
containingPaintedLayerData->mDispatchToContentHitRegion.SimplifyOutward(
|
|
8);
|
|
if (data->mDTCRequiresTargetConfirmation) {
|
|
containingPaintedLayerData->mDTCRequiresTargetConfirmation = true;
|
|
}
|
|
}
|
|
if (!data->mMaybeHitRegion.GetBounds().IsEmpty()) {
|
|
nsRect rect = nsLayoutUtils::TransformFrameRectToAncestor(
|
|
mContainerReferenceFrame, data->mMaybeHitRegion.GetBounds(),
|
|
containingPaintedLayerData->mReferenceFrame);
|
|
if (inactiveLayerClip) {
|
|
rect = inactiveLayerClip->ApplyNonRoundedIntersection(rect);
|
|
}
|
|
containingPaintedLayerData->mMaybeHitRegion.Or(
|
|
containingPaintedLayerData->mMaybeHitRegion, rect);
|
|
containingPaintedLayerData->mMaybeHitRegion.SimplifyOutward(8);
|
|
}
|
|
Maybe<Matrix4x4Flagged> matrixCache;
|
|
nsLayoutUtils::TransformToAncestorAndCombineRegions(
|
|
data->mHitRegion, mContainerReferenceFrame,
|
|
containingPaintedLayerData->mReferenceFrame,
|
|
&containingPaintedLayerData->mHitRegion,
|
|
&containingPaintedLayerData->mMaybeHitRegion, &matrixCache,
|
|
inactiveLayerClip);
|
|
// See the comment in nsDisplayList::AddFrame, where the touch action
|
|
// regions are handled. The same thing applies here.
|
|
bool alreadyHadRegions =
|
|
!containingPaintedLayerData->mNoActionRegion.IsEmpty() ||
|
|
!containingPaintedLayerData->mHorizontalPanRegion.IsEmpty() ||
|
|
!containingPaintedLayerData->mVerticalPanRegion.IsEmpty();
|
|
nsLayoutUtils::TransformToAncestorAndCombineRegions(
|
|
data->mNoActionRegion, mContainerReferenceFrame,
|
|
containingPaintedLayerData->mReferenceFrame,
|
|
&containingPaintedLayerData->mNoActionRegion,
|
|
&containingPaintedLayerData->mDispatchToContentHitRegion, &matrixCache,
|
|
inactiveLayerClip);
|
|
nsLayoutUtils::TransformToAncestorAndCombineRegions(
|
|
data->mHorizontalPanRegion, mContainerReferenceFrame,
|
|
containingPaintedLayerData->mReferenceFrame,
|
|
&containingPaintedLayerData->mHorizontalPanRegion,
|
|
&containingPaintedLayerData->mDispatchToContentHitRegion, &matrixCache,
|
|
inactiveLayerClip);
|
|
nsLayoutUtils::TransformToAncestorAndCombineRegions(
|
|
data->mVerticalPanRegion, mContainerReferenceFrame,
|
|
containingPaintedLayerData->mReferenceFrame,
|
|
&containingPaintedLayerData->mVerticalPanRegion,
|
|
&containingPaintedLayerData->mDispatchToContentHitRegion, &matrixCache,
|
|
inactiveLayerClip);
|
|
if (alreadyHadRegions) {
|
|
containingPaintedLayerData->mDispatchToContentHitRegion.OrWith(
|
|
containingPaintedLayerData->CombinedTouchActionRegion());
|
|
}
|
|
containingPaintedLayerData->HitRegionsUpdated();
|
|
} else {
|
|
EventRegions regions(
|
|
ScaleRegionToOutsidePixels(data->mHitRegion),
|
|
ScaleRegionToOutsidePixels(data->mMaybeHitRegion),
|
|
ScaleRegionToOutsidePixels(data->mDispatchToContentHitRegion),
|
|
ScaleRegionToOutsidePixels(data->mNoActionRegion),
|
|
ScaleRegionToOutsidePixels(data->mHorizontalPanRegion),
|
|
ScaleRegionToOutsidePixels(data->mVerticalPanRegion),
|
|
data->mDTCRequiresTargetConfirmation);
|
|
|
|
Matrix mat = layer->GetTransform().As2D();
|
|
mat.Invert();
|
|
regions.ApplyTranslationAndScale(mat._31, mat._32, mat._11, mat._22);
|
|
|
|
layer->SetEventRegions(regions);
|
|
}
|
|
|
|
SetBackfaceHiddenForLayer(data->mBackfaceHidden, data->mLayer);
|
|
if (layer != data->mLayer) {
|
|
SetBackfaceHiddenForLayer(data->mBackfaceHidden, layer);
|
|
}
|
|
}
|
|
|
|
static bool IsItemAreaInWindowOpaqueRegion(
|
|
nsDisplayListBuilder* aBuilder, nsDisplayItem* aItem,
|
|
const nsRect& aComponentAlphaBounds) {
|
|
if (!aItem->Frame()->PresContext()->IsChrome()) {
|
|
// Assume that Web content is always in the window opaque region.
|
|
return true;
|
|
}
|
|
if (aItem->ReferenceFrame() != aBuilder->RootReferenceFrame()) {
|
|
// aItem is probably in some transformed subtree.
|
|
// We're not going to bother figuring out where this landed, we're just
|
|
// going to assume it might have landed over a transparent part of
|
|
// the window.
|
|
return false;
|
|
}
|
|
return aBuilder->GetWindowOpaqueRegion().Contains(aComponentAlphaBounds);
|
|
}
|
|
|
|
void PaintedLayerData::UpdateEffectStatus(DisplayItemEntryType aType,
|
|
nsTArray<size_t>& aOpacityIndices) {
|
|
switch (aType) {
|
|
case DisplayItemEntryType::PushOpacity:
|
|
// The index of the new assigned display item in |mAssignedDisplayItems|
|
|
// array will be the current length of the array.
|
|
aOpacityIndices.AppendElement(mAssignedDisplayItems.size());
|
|
break;
|
|
case DisplayItemEntryType::PopOpacity:
|
|
MOZ_ASSERT(!aOpacityIndices.IsEmpty());
|
|
aOpacityIndices.RemoveLastElement();
|
|
break;
|
|
#ifdef DEBUG
|
|
case DisplayItemEntryType::PopTransform:
|
|
MOZ_ASSERT(mTransformLevel >= 0);
|
|
mTransformLevel--;
|
|
break;
|
|
case DisplayItemEntryType::PushTransform:
|
|
mTransformLevel++;
|
|
break;
|
|
#endif
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
bool PaintedLayerData::SetupComponentAlpha(
|
|
ContainerState* aState, nsPaintedDisplayItem* aItem,
|
|
const nsIntRect& aVisibleRect, const TransformClipNode* aTransform) {
|
|
nsRect componentAlphaBounds =
|
|
aItem->GetComponentAlphaBounds(aState->mBuilder);
|
|
|
|
if (componentAlphaBounds.IsEmpty()) {
|
|
// The item does not require component alpha, nothing do do here.
|
|
return false;
|
|
}
|
|
|
|
if (aTransform) {
|
|
componentAlphaBounds = aTransform->TransformRect(
|
|
componentAlphaBounds, aState->mAppUnitsPerDevPixel);
|
|
}
|
|
|
|
const nsIntRect pixelBounds =
|
|
aState->ScaleToOutsidePixels(componentAlphaBounds, false);
|
|
|
|
const nsIntRect visibleRect = pixelBounds.Intersect(aVisibleRect);
|
|
|
|
if (!mOpaqueRegion.Contains(visibleRect)) {
|
|
nsRect buildingRect = aItem->GetBuildingRect();
|
|
|
|
if (aTransform) {
|
|
buildingRect =
|
|
aTransform->TransformRect(buildingRect, aState->mAppUnitsPerDevPixel);
|
|
}
|
|
|
|
const nsRect tightBounds = componentAlphaBounds.Intersect(buildingRect);
|
|
|
|
if (IsItemAreaInWindowOpaqueRegion(aState->mBuilder, aItem, tightBounds)) {
|
|
mNeedComponentAlpha = true;
|
|
} else {
|
|
// There is no opaque background below the item, disable component alpha.
|
|
aItem->DisableComponentAlpha();
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
UniquePtr<InactiveLayerData> PaintedLayerData::CreateInactiveLayerData(
|
|
ContainerState* aState, nsPaintedDisplayItem* aItem,
|
|
DisplayItemData* aData) {
|
|
RefPtr<BasicLayerManager> tempManager;
|
|
if (aData) {
|
|
tempManager = aData->InactiveManager();
|
|
}
|
|
if (!tempManager) {
|
|
tempManager = new BasicLayerManager(BasicLayerManager::BLM_INACTIVE);
|
|
}
|
|
UniquePtr<InactiveLayerData> data = MakeUnique<InactiveLayerData>();
|
|
data->mLayerManager = tempManager;
|
|
|
|
FrameLayerBuilder* layerBuilder = new FrameLayerBuilder();
|
|
// Ownership of layerBuilder is passed to tempManager.
|
|
layerBuilder->Init(aState->Builder(), tempManager, this, true,
|
|
&aItem->GetClip());
|
|
|
|
tempManager->BeginTransaction();
|
|
if (aState->LayerBuilder()->GetRetainingLayerManager()) {
|
|
layerBuilder->DidBeginRetainedLayerTransaction(tempManager);
|
|
}
|
|
|
|
data->mProps = LayerProperties::CloneFrom(tempManager->GetRoot());
|
|
data->mLayer = aItem->BuildLayer(aState->Builder(), tempManager,
|
|
ContainerLayerParameters());
|
|
return data;
|
|
}
|
|
|
|
void PaintedLayerData::Accumulate(
|
|
ContainerState* aState, nsPaintedDisplayItem* aItem,
|
|
const nsIntRect& aVisibleRect, const nsRect& aContentRect,
|
|
const DisplayItemClip& aClip, LayerState aLayerState, nsDisplayList* aList,
|
|
DisplayItemEntryType aType, nsTArray<size_t>& aOpacityIndices,
|
|
const RefPtr<TransformClipNode>& aTransform) {
|
|
// If aItem is nullptr, the cast to nsPaintedDisplayItem failed.
|
|
MOZ_ASSERT(aItem, "Can only accumulate display items that are painted!");
|
|
|
|
FLB_LOG_PAINTED_LAYER_DECISION(
|
|
this, "Accumulating dp=%s(%p), f=%p against pld=%p\n", aItem->Name(),
|
|
aItem, aItem->Frame(), this);
|
|
|
|
const bool hasOpacity = aOpacityIndices.Length() > 0;
|
|
UpdateEffectStatus(aType, aOpacityIndices);
|
|
|
|
const DisplayItemClip* oldClip = mItemClip;
|
|
mItemClip = &aClip;
|
|
|
|
const bool isMerged = aItem->AsDisplayWrapList() &&
|
|
aItem->AsDisplayWrapList()->HasMergedFrames();
|
|
|
|
if (IsEffectEndMarker(aType)) {
|
|
mAssignedDisplayItems.emplace_back(aItem, aLayerState, nullptr,
|
|
aContentRect, aType, hasOpacity,
|
|
aTransform, isMerged);
|
|
return;
|
|
}
|
|
|
|
bool clipMatches =
|
|
(oldClip == mItemClip) || (oldClip && *oldClip == *mItemClip);
|
|
|
|
DisplayItemData* currentData =
|
|
isMerged ? nullptr : aItem->GetDisplayItemData();
|
|
|
|
DisplayItemData* oldData = aState->mLayerBuilder->GetOldLayerForFrame(
|
|
aItem->Frame(), aItem->GetPerFrameKey(), currentData,
|
|
aItem->GetDisplayItemDataLayerManager());
|
|
|
|
mAssignedDisplayItems.emplace_back(aItem, aLayerState, oldData, aContentRect,
|
|
aType, hasOpacity, aTransform, isMerged);
|
|
|
|
if (aLayerState != LayerState::LAYER_NONE) {
|
|
FLB_LOG_PAINTED_LAYER_DECISION(this, "Creating nested FLB for item %p\n",
|
|
aItem);
|
|
mAssignedDisplayItems.back().mInactiveLayerData =
|
|
CreateInactiveLayerData(aState, aItem, oldData);
|
|
}
|
|
|
|
if (aState->mBuilder->NeedToForceTransparentSurfaceForItem(aItem)) {
|
|
mForceTransparentSurface = true;
|
|
}
|
|
|
|
if (aState->mParameters.mDisableSubpixelAntialiasingInDescendants) {
|
|
// Disable component alpha.
|
|
// Note that the transform (if any) on the PaintedLayer is always an integer
|
|
// translation so we don't have to factor that in here.
|
|
aItem->DisableComponentAlpha();
|
|
} else {
|
|
const bool needsComponentAlpha =
|
|
SetupComponentAlpha(aState, aItem, aVisibleRect, aTransform);
|
|
|
|
if (needsComponentAlpha) {
|
|
// This display item needs background copy when pushing opacity group.
|
|
for (size_t i : aOpacityIndices) {
|
|
AssignedDisplayItem& item = mAssignedDisplayItems[i];
|
|
MOZ_ASSERT(item.mType == DisplayItemEntryType::PushOpacity ||
|
|
item.mType == DisplayItemEntryType::PushOpacityWithBg);
|
|
item.mType = DisplayItemEntryType::PushOpacityWithBg;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (aItem->MustPaintOnContentSide()) {
|
|
mShouldPaintOnContentSide = true;
|
|
}
|
|
|
|
if (aTransform && aType == DisplayItemEntryType::Item) {
|
|
// Bounds transformed with axis-aligned transforms could be included in the
|
|
// opaque region calculations. For simplicity, this is currently not done.
|
|
return;
|
|
}
|
|
|
|
if (!mIsSolidColorInVisibleRegion && mOpaqueRegion.Contains(aVisibleRect) &&
|
|
mVisibleRegion.Contains(aVisibleRect) && !mImage) {
|
|
// A very common case! Most pages have a PaintedLayer with the page
|
|
// background (opaque) visible and most or all of the page content over the
|
|
// top of that background.
|
|
// The rest of this method won't do anything. mVisibleRegion and
|
|
// mOpaqueRegion don't need updating. mVisibleRegion contains aVisibleRect
|
|
// already, mOpaqueRegion contains aVisibleRect and therefore whatever the
|
|
// opaque region of the item is. mVisibleRegion must contain mOpaqueRegion
|
|
// and therefore aVisibleRect.
|
|
return;
|
|
}
|
|
|
|
nsIntRegion opaquePixels;
|
|
|
|
// Active opacity means no opaque pixels.
|
|
if (!hasOpacity) {
|
|
opaquePixels = aState->ComputeOpaqueRect(
|
|
aItem, mAnimatedGeometryRoot, mASR, aClip, aList, &mHideAllLayersBelow,
|
|
&mOpaqueForAnimatedGeometryRootParent);
|
|
opaquePixels.AndWith(aVisibleRect);
|
|
}
|
|
|
|
/* Mark as available for conversion to image layer if this is a nsDisplayImage
|
|
* and it's the only thing visible in this layer.
|
|
*/
|
|
if (nsIntRegion(aVisibleRect).Contains(mVisibleRegion) &&
|
|
opaquePixels.Contains(mVisibleRegion) &&
|
|
aItem->SupportsOptimizingToImage()) {
|
|
mImage = static_cast<nsDisplayImageContainer*>(aItem);
|
|
FLB_LOG_PAINTED_LAYER_DECISION(
|
|
this, " Tracking image: nsDisplayImageContainer covers the layer\n");
|
|
} else if (mImage) {
|
|
FLB_LOG_PAINTED_LAYER_DECISION(this, " No longer tracking image\n");
|
|
mImage = nullptr;
|
|
}
|
|
|
|
bool isFirstVisibleItem = mVisibleRegion.IsEmpty();
|
|
|
|
Maybe<nscolor> uniformColor;
|
|
if (!hasOpacity) {
|
|
uniformColor = aItem->IsUniform(aState->mBuilder);
|
|
}
|
|
|
|
// Some display items have to exist (so they can set forceTransparentSurface
|
|
// below) but don't draw anything. They'll return true for isUniform but
|
|
// a color with opacity 0.
|
|
if (!uniformColor || NS_GET_A(*uniformColor) > 0) {
|
|
// Make sure that the visible area is covered by uniform pixels. In
|
|
// particular this excludes cases where the edges of the item are not
|
|
// pixel-aligned (thus the item will not be truly uniform).
|
|
if (uniformColor) {
|
|
bool snap;
|
|
nsRect bounds = aItem->GetBounds(aState->mBuilder, &snap);
|
|
if (!aState->ScaleToInsidePixels(bounds, snap).Contains(aVisibleRect)) {
|
|
uniformColor = Nothing();
|
|
FLB_LOG_PAINTED_LAYER_DECISION(
|
|
this, " Display item does not cover the visible rect\n");
|
|
}
|
|
}
|
|
if (uniformColor) {
|
|
if (isFirstVisibleItem) {
|
|
// This color is all we have
|
|
mSolidColor = *uniformColor;
|
|
mIsSolidColorInVisibleRegion = true;
|
|
} else if (mIsSolidColorInVisibleRegion &&
|
|
mVisibleRegion.IsEqual(nsIntRegion(aVisibleRect)) &&
|
|
clipMatches) {
|
|
// we can just blend the colors together
|
|
mSolidColor = NS_ComposeColors(mSolidColor, *uniformColor);
|
|
} else {
|
|
FLB_LOG_PAINTED_LAYER_DECISION(
|
|
this, " Layer not a solid color: Can't blend colors togethers\n");
|
|
mIsSolidColorInVisibleRegion = false;
|
|
}
|
|
} else {
|
|
FLB_LOG_PAINTED_LAYER_DECISION(this,
|
|
" Layer is not a solid color: Display "
|
|
"item is not uniform over the visible "
|
|
"bound\n");
|
|
mIsSolidColorInVisibleRegion = false;
|
|
}
|
|
|
|
mVisibleRegion.Or(mVisibleRegion, aVisibleRect);
|
|
mVisibleRegion.SimplifyOutward(4);
|
|
}
|
|
|
|
if (!opaquePixels.IsEmpty()) {
|
|
for (auto iter = opaquePixels.RectIter(); !iter.Done(); iter.Next()) {
|
|
// We don't use SimplifyInward here since it's not defined exactly
|
|
// what it will discard. For our purposes the most important case
|
|
// is a large opaque background at the bottom of z-order (e.g.,
|
|
// a canvas background), so we need to make sure that the first rect
|
|
// we see doesn't get discarded.
|
|
nsIntRegion tmp;
|
|
tmp.Or(mOpaqueRegion, iter.Get());
|
|
// Opaque display items in chrome documents whose window is partially
|
|
// transparent are always added to the opaque region. This helps ensure
|
|
// that we get as much subpixel-AA as possible in the chrome.
|
|
if (tmp.GetNumRects() <= 4 || aItem->Frame()->PresContext()->IsChrome()) {
|
|
mOpaqueRegion = std::move(tmp);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
nsRegion PaintedLayerData::CombinedTouchActionRegion() {
|
|
nsRegion result;
|
|
result.Or(mHorizontalPanRegion, mVerticalPanRegion);
|
|
result.OrWith(mNoActionRegion);
|
|
return result;
|
|
}
|
|
|
|
void PaintedLayerData::AccumulateHitTestItem(ContainerState* aState,
|
|
nsDisplayItem* aItem,
|
|
const DisplayItemClip& aClip,
|
|
TransformClipNode* aTransform) {
|
|
MOZ_ASSERT(aItem->HasHitTestInfo());
|
|
auto* item = static_cast<nsDisplayHitTestInfoItem*>(aItem);
|
|
|
|
const HitTestInfo& info = item->GetHitTestInfo();
|
|
|
|
nsRect area = info.mArea;
|
|
const CompositorHitTestInfo& flags = info.mFlags;
|
|
|
|
FLB_LOG_PAINTED_LAYER_DECISION(
|
|
this,
|
|
"Accumulating hit test info %p against pld=%p, "
|
|
"area: [%d, %d, %d, %d], flags: 0x%x]\n",
|
|
item, this, area.x, area.y, area.width, area.height, flags.serialize());
|
|
|
|
area = aClip.ApplyNonRoundedIntersection(area);
|
|
|
|
if (aTransform) {
|
|
area = aTransform->TransformRect(area, aState->mAppUnitsPerDevPixel);
|
|
}
|
|
|
|
if (area.IsEmpty()) {
|
|
FLB_LOG_PAINTED_LAYER_DECISION(
|
|
this, "Discarded empty hit test info %p for pld=%p\n", item, this);
|
|
return;
|
|
}
|
|
|
|
bool hasRoundedCorners = aClip.GetRoundedRectCount() > 0;
|
|
|
|
// use the NS_FRAME_SIMPLE_EVENT_REGIONS to avoid calling the slightly
|
|
// expensive HasNonZeroCorner function if we know from a previous run that
|
|
// the frame has zero corners.
|
|
nsIFrame* frame = item->Frame();
|
|
bool simpleRegions = frame->HasAnyStateBits(NS_FRAME_SIMPLE_EVENT_REGIONS);
|
|
if (!simpleRegions) {
|
|
if (nsLayoutUtils::HasNonZeroCorner(frame->StyleBorder()->mBorderRadius)) {
|
|
hasRoundedCorners = true;
|
|
} else {
|
|
frame->AddStateBits(NS_FRAME_SIMPLE_EVENT_REGIONS);
|
|
}
|
|
}
|
|
|
|
if (hasRoundedCorners || (frame->GetStateBits() & NS_FRAME_SVG_LAYOUT)) {
|
|
mMaybeHitRegion.OrWith(area);
|
|
} else {
|
|
mHitRegion.OrWith(area);
|
|
}
|
|
|
|
const auto dtcFlags = flags & CompositorHitTestDispatchToContent;
|
|
if (!dtcFlags.isEmpty()) {
|
|
mDispatchToContentHitRegion.OrWith(area);
|
|
|
|
if (flags.contains(CompositorHitTestFlags::eRequiresTargetConfirmation)) {
|
|
mDTCRequiresTargetConfirmation = true;
|
|
}
|
|
}
|
|
|
|
const auto touchFlags = flags & CompositorHitTestTouchActionMask;
|
|
if (!touchFlags.isEmpty()) {
|
|
// If there are multiple touch-action areas, there are multiple elements
|
|
// with touch-action properties. We don't know what the relationship is
|
|
// between those elements in terms of DOM ancestry, and so we don't know how
|
|
// to combine the regions properly. Instead, we just add all the areas to
|
|
// the dispatch-to-content region, so that the APZ knows to check with the
|
|
// main thread. See bug 1286957.
|
|
if (mCollapsedTouchActions) {
|
|
mDispatchToContentHitRegion.OrWith(area);
|
|
} else if (touchFlags == CompositorHitTestTouchActionMask) {
|
|
// everything was disabled, so touch-action:none
|
|
mNoActionRegion.OrWith(area);
|
|
} else {
|
|
// The event regions code does not store enough information to actually
|
|
// represent all the different states. Prior to the introduction of
|
|
// CompositorHitTestInfo here in bug 1389149, the following two cases
|
|
// were effectively getting collapsed:
|
|
// (1) touch-action: auto
|
|
// (2) touch-action: manipulation
|
|
// In both of these cases, none of {mNoActionRegion, mHorizontalPanRegion,
|
|
// mVerticalPanRegion} were modified, and so the fact that case (2) should
|
|
// have prevented double-tap-zooming was getting lost.
|
|
// With CompositorHitTestInfo we can now represent that case correctly,
|
|
// but only if we use CompositorHitTestInfo all the way to the compositor
|
|
// (i.e. in the WebRender-enabled case). In the non-WebRender case where
|
|
// we still use the event regions, we must collapse these two cases back
|
|
// together. Or add another region to the event regions to fix this
|
|
// properly.
|
|
if (touchFlags !=
|
|
CompositorHitTestFlags::eTouchActionDoubleTapZoomDisabled) {
|
|
if (!flags.contains(CompositorHitTestFlags::eTouchActionPanXDisabled)) {
|
|
// pan-x is allowed
|
|
mHorizontalPanRegion.OrWith(area);
|
|
}
|
|
if (!flags.contains(CompositorHitTestFlags::eTouchActionPanYDisabled)) {
|
|
// pan-y is allowed
|
|
mVerticalPanRegion.OrWith(area);
|
|
}
|
|
} else {
|
|
// the touch-action: manipulation case described above. To preserve the
|
|
// existing behaviour, don't touch either mHorizontalPanRegion or
|
|
// mVerticalPanRegion
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!mCollapsedTouchActions) {
|
|
// If there are multiple touch-action areas, there are multiple elements
|
|
// with touch-action properties. We don't know what the relationship is
|
|
// between those elements in terms of DOM ancestry, and so we don't know how
|
|
// to combine the regions properly. Instead, we just add all the areas to
|
|
// the dispatch-to-content region, so that the APZ knows to check with the
|
|
// main thread. See bug 1286957.
|
|
const int alreadyHadRegions = mNoActionRegion.GetNumRects() +
|
|
mHorizontalPanRegion.GetNumRects() +
|
|
mVerticalPanRegion.GetNumRects();
|
|
|
|
if (alreadyHadRegions > 1) {
|
|
mDispatchToContentHitRegion.OrWith(CombinedTouchActionRegion());
|
|
mNoActionRegion.SetEmpty();
|
|
mHorizontalPanRegion.SetEmpty();
|
|
mVerticalPanRegion.SetEmpty();
|
|
mCollapsedTouchActions = true;
|
|
}
|
|
}
|
|
|
|
// Avoid quadratic performance as a result of the region growing to include
|
|
// and arbitrarily large number of rects, which can happen on some pages.
|
|
mMaybeHitRegion.SimplifyOutward(8);
|
|
mDispatchToContentHitRegion.SimplifyOutward(8);
|
|
|
|
HitRegionsUpdated();
|
|
}
|
|
|
|
void PaintedLayerData::HitRegionsUpdated() {
|
|
// Calculate scaled versions of the bounds of mHitRegion and mMaybeHitRegion
|
|
// for quick access in FindPaintedLayerFor().
|
|
mScaledHitRegionBounds = mState->ScaleToOutsidePixels(mHitRegion.GetBounds());
|
|
mScaledMaybeHitRegionBounds =
|
|
mState->ScaleToOutsidePixels(mMaybeHitRegion.GetBounds());
|
|
}
|
|
|
|
void ContainerState::NewPaintedLayerData(
|
|
PaintedLayerData* aData, AnimatedGeometryRoot* aAnimatedGeometryRoot,
|
|
const ActiveScrolledRoot* aASR, const DisplayItemClipChain* aClipChain,
|
|
const ActiveScrolledRoot* aScrollMetadataASR, const nsPoint& aTopLeft,
|
|
const nsIFrame* aReferenceFrame, const bool aBackfaceHidden) {
|
|
aData->mState = this;
|
|
aData->mAnimatedGeometryRoot = aAnimatedGeometryRoot;
|
|
aData->mASR = aASR;
|
|
aData->mClipChain = aClipChain;
|
|
aData->mAnimatedGeometryRootOffset = aTopLeft;
|
|
aData->mReferenceFrame = aReferenceFrame;
|
|
aData->mBackfaceHidden = aBackfaceHidden;
|
|
|
|
aData->mNewChildLayersIndex = mNewChildLayers.Length();
|
|
NewLayerEntry* newLayerEntry = mNewChildLayers.AppendElement();
|
|
newLayerEntry->mAnimatedGeometryRoot = aAnimatedGeometryRoot;
|
|
newLayerEntry->mASR = aASR;
|
|
newLayerEntry->mScrollMetadataASR = aScrollMetadataASR;
|
|
newLayerEntry->mClipChain = aClipChain;
|
|
// newLayerEntry->mOpaqueRegion is filled in later from
|
|
// paintedLayerData->mOpaqueRegion, if necessary.
|
|
|
|
// Allocate another entry for this layer's optimization to
|
|
// ColorLayer/ImageLayer
|
|
mNewChildLayers.AppendElement();
|
|
}
|
|
|
|
#ifdef MOZ_DUMP_PAINTING
|
|
static void DumpPaintedImage(nsDisplayItem* aItem, SourceSurface* aSurface) {
|
|
nsCString string(aItem->Name());
|
|
string.Append('-');
|
|
string.AppendInt((uint64_t)aItem);
|
|
fprintf_stderr(gfxUtils::sDumpPaintFile, "<script>array[\"%s\"]=\"",
|
|
string.BeginReading());
|
|
gfxUtils::DumpAsDataURI(aSurface, gfxUtils::sDumpPaintFile);
|
|
fprintf_stderr(gfxUtils::sDumpPaintFile, "\";</script>\n");
|
|
}
|
|
#endif
|
|
|
|
static void PaintInactiveLayer(nsDisplayListBuilder* aBuilder,
|
|
LayerManager* aManager, nsDisplayItem* aItem,
|
|
gfxContext* aContext, gfxContext* aCtx) {
|
|
// This item has an inactive layer. Render it to a PaintedLayer
|
|
// using a temporary BasicLayerManager.
|
|
BasicLayerManager* basic = static_cast<BasicLayerManager*>(aManager);
|
|
RefPtr<gfxContext> context = aContext;
|
|
#ifdef MOZ_DUMP_PAINTING
|
|
int32_t appUnitsPerDevPixel = AppUnitsPerDevPixel(aItem);
|
|
nsIntRect itemVisibleRect =
|
|
aItem->GetPaintRect().ToOutsidePixels(appUnitsPerDevPixel);
|
|
|
|
RefPtr<DrawTarget> tempDT;
|
|
if (gfxEnv::DumpPaint()) {
|
|
tempDT = gfxPlatform::GetPlatform()->CreateOffscreenContentDrawTarget(
|
|
itemVisibleRect.Size(), SurfaceFormat::B8G8R8A8);
|
|
if (tempDT) {
|
|
context = gfxContext::CreateOrNull(tempDT);
|
|
if (!context) {
|
|
// Leave this as crash, it's in the debugging code, we want to know
|
|
gfxDevCrash(LogReason::InvalidContext)
|
|
<< "PaintInactive context problem " << gfx::hexa(tempDT);
|
|
return;
|
|
}
|
|
context->SetMatrix(
|
|
Matrix::Translation(-itemVisibleRect.x, -itemVisibleRect.y));
|
|
}
|
|
}
|
|
#endif
|
|
basic->BeginTransaction();
|
|
basic->SetTarget(context);
|
|
|
|
if (aItem->GetType() == DisplayItemType::TYPE_MASK) {
|
|
static_cast<nsDisplayMasksAndClipPaths*>(aItem)->PaintAsLayer(aBuilder,
|
|
aCtx, basic);
|
|
if (basic->InTransaction()) {
|
|
basic->AbortTransaction();
|
|
}
|
|
} else if (aItem->GetType() == DisplayItemType::TYPE_FILTER) {
|
|
static_cast<nsDisplayFilters*>(aItem)->PaintAsLayer(aBuilder, aCtx, basic);
|
|
if (basic->InTransaction()) {
|
|
basic->AbortTransaction();
|
|
}
|
|
} else {
|
|
basic->EndTransaction(FrameLayerBuilder::DrawPaintedLayer, aBuilder);
|
|
}
|
|
FrameLayerBuilder* builder = static_cast<FrameLayerBuilder*>(
|
|
basic->GetUserData(&gLayerManagerLayerBuilder));
|
|
if (builder) {
|
|
builder->DidEndTransaction();
|
|
}
|
|
|
|
basic->SetTarget(nullptr);
|
|
|
|
#ifdef MOZ_DUMP_PAINTING
|
|
if (gfxEnv::DumpPaint() && tempDT) {
|
|
RefPtr<SourceSurface> surface = tempDT->Snapshot();
|
|
DumpPaintedImage(aItem, surface);
|
|
|
|
DrawTarget* drawTarget = aContext->GetDrawTarget();
|
|
Rect rect(itemVisibleRect.x, itemVisibleRect.y, itemVisibleRect.width,
|
|
itemVisibleRect.height);
|
|
drawTarget->DrawSurface(surface, rect, Rect(Point(0, 0), rect.Size()));
|
|
|
|
aItem->SetPainted();
|
|
}
|
|
#endif
|
|
}
|
|
|
|
nsRect ContainerState::GetDisplayPortForAnimatedGeometryRoot(
|
|
AnimatedGeometryRoot* aAnimatedGeometryRoot) {
|
|
if (mLastDisplayPortAGR == aAnimatedGeometryRoot) {
|
|
return mLastDisplayPortRect;
|
|
}
|
|
|
|
mLastDisplayPortAGR = aAnimatedGeometryRoot;
|
|
|
|
nsIScrollableFrame* sf =
|
|
nsLayoutUtils::GetScrollableFrameFor(*aAnimatedGeometryRoot);
|
|
if (sf == nullptr ||
|
|
nsLayoutUtils::UsesAsyncScrolling(*aAnimatedGeometryRoot)) {
|
|
mLastDisplayPortRect = nsRect();
|
|
return mLastDisplayPortRect;
|
|
}
|
|
|
|
bool usingDisplayport = nsLayoutUtils::GetDisplayPort(
|
|
(*aAnimatedGeometryRoot)->GetContent(), &mLastDisplayPortRect,
|
|
RelativeTo::ScrollFrame);
|
|
if (!usingDisplayport) {
|
|
// No async scrolling, so all that matters is that the layer contents
|
|
// cover the scrollport.
|
|
mLastDisplayPortRect = sf->GetScrollPortRect();
|
|
}
|
|
nsIFrame* scrollFrame = do_QueryFrame(sf);
|
|
mLastDisplayPortRect +=
|
|
scrollFrame->GetOffsetToCrossDoc(mContainerReferenceFrame);
|
|
return mLastDisplayPortRect;
|
|
}
|
|
|
|
nsIntRegion ContainerState::ComputeOpaqueRect(
|
|
nsDisplayItem* aItem, AnimatedGeometryRoot* aAnimatedGeometryRoot,
|
|
const ActiveScrolledRoot* aASR, const DisplayItemClip& aClip,
|
|
nsDisplayList* aList, bool* aHideAllLayersBelow,
|
|
bool* aOpaqueForAnimatedGeometryRootParent) {
|
|
bool snapOpaque;
|
|
nsRegion opaque = aItem->GetOpaqueRegion(mBuilder, &snapOpaque);
|
|
if (opaque.IsEmpty()) {
|
|
return nsIntRegion();
|
|
}
|
|
|
|
nsIntRegion opaquePixels;
|
|
nsRegion opaqueClipped;
|
|
for (auto iter = opaque.RectIter(); !iter.Done(); iter.Next()) {
|
|
opaqueClipped.Or(opaqueClipped,
|
|
aClip.ApproximateIntersectInward(iter.Get()));
|
|
}
|
|
if (aAnimatedGeometryRoot == mContainerAnimatedGeometryRoot &&
|
|
aASR == mContainerASR && opaqueClipped.Contains(mContainerBounds)) {
|
|
*aHideAllLayersBelow = true;
|
|
aList->SetIsOpaque();
|
|
}
|
|
// Add opaque areas to the "exclude glass" region. Only do this when our
|
|
// container layer is going to be the rootmost layer, otherwise transforms
|
|
// etc will mess us up (and opaque contributions from other containers are
|
|
// not needed).
|
|
if (!nsLayoutUtils::GetCrossDocParentFrame(mContainerFrame)) {
|
|
mBuilder->AddWindowOpaqueRegion(opaqueClipped);
|
|
}
|
|
opaquePixels = ScaleRegionToInsidePixels(opaqueClipped, snapOpaque);
|
|
|
|
if (IsInInactiveLayer()) {
|
|
return opaquePixels;
|
|
}
|
|
|
|
const nsRect& displayport =
|
|
GetDisplayPortForAnimatedGeometryRoot(aAnimatedGeometryRoot);
|
|
if (!displayport.IsEmpty() &&
|
|
opaquePixels.Contains(ScaleRegionToNearestPixels(displayport))) {
|
|
*aOpaqueForAnimatedGeometryRootParent = true;
|
|
}
|
|
return opaquePixels;
|
|
}
|
|
|
|
Maybe<size_t> ContainerState::SetupMaskLayerForScrolledClip(
|
|
Layer* aLayer, const DisplayItemClip& aClip) {
|
|
if (aClip.GetRoundedRectCount() > 0) {
|
|
Maybe<size_t> maskLayerIndex = Some(aLayer->GetAncestorMaskLayerCount());
|
|
if (RefPtr<Layer> maskLayer =
|
|
CreateMaskLayer(aLayer, aClip, maskLayerIndex)) {
|
|
aLayer->AddAncestorMaskLayer(maskLayer);
|
|
return maskLayerIndex;
|
|
}
|
|
// Fall through to |return Nothing()|.
|
|
}
|
|
return Nothing();
|
|
}
|
|
|
|
static const ActiveScrolledRoot* GetASRForPerspective(
|
|
const ActiveScrolledRoot* aASR, nsIFrame* aPerspectiveFrame) {
|
|
for (const ActiveScrolledRoot* asr = aASR; asr; asr = asr->mParent) {
|
|
nsIFrame* scrolledFrame = asr->mScrollableFrame->GetScrolledFrame();
|
|
if (nsLayoutUtils::IsAncestorFrameCrossDoc(scrolledFrame,
|
|
aPerspectiveFrame)) {
|
|
return asr;
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
static CSSMaskLayerUserData* GetCSSMaskLayerUserData(Layer* aMaskLayer) {
|
|
if (!aMaskLayer) {
|
|
return nullptr;
|
|
}
|
|
|
|
return static_cast<CSSMaskLayerUserData*>(
|
|
aMaskLayer->GetUserData(&gCSSMaskLayerUserData));
|
|
}
|
|
|
|
static void SetCSSMaskLayerUserData(Layer* aMaskLayer) {
|
|
MOZ_ASSERT(aMaskLayer);
|
|
|
|
aMaskLayer->SetUserData(&gCSSMaskLayerUserData, new CSSMaskLayerUserData());
|
|
}
|
|
|
|
void ContainerState::SetupMaskLayerForCSSMask(
|
|
Layer* aLayer, nsDisplayMasksAndClipPaths* aMaskItem) {
|
|
RefPtr<ImageLayer> maskLayer = CreateOrRecycleMaskImageLayerFor(
|
|
MaskLayerKey(aLayer, Nothing()), GetCSSMaskLayerUserData,
|
|
SetCSSMaskLayerUserData);
|
|
CSSMaskLayerUserData* oldUserData = GetCSSMaskLayerUserData(maskLayer.get());
|
|
MOZ_ASSERT(oldUserData);
|
|
|
|
bool snap;
|
|
nsRect bounds = aMaskItem->GetBounds(mBuilder, &snap);
|
|
nsIntRect itemRect = ScaleToOutsidePixels(bounds, snap);
|
|
|
|
// Setup mask layer offset.
|
|
// We do not repaint mask for mask position change, so update base transform
|
|
// each time is required.
|
|
Matrix4x4 matrix;
|
|
matrix.PreTranslate(itemRect.x, itemRect.y, 0);
|
|
matrix.PreTranslate(mParameters.mOffset.x, mParameters.mOffset.y, 0);
|
|
maskLayer->SetBaseTransform(matrix);
|
|
|
|
nsPoint maskLayerOffset = aMaskItem->ToReferenceFrame() - bounds.TopLeft();
|
|
|
|
CSSMaskLayerUserData newUserData(aMaskItem->Frame(), itemRect,
|
|
maskLayerOffset);
|
|
nsRect dirtyRect;
|
|
if (!aMaskItem->IsInvalid(dirtyRect) && *oldUserData == newUserData) {
|
|
aLayer->SetMaskLayer(maskLayer);
|
|
return;
|
|
}
|
|
|
|
int32_t maxSize = mManager->GetMaxTextureSize();
|
|
IntSize surfaceSize(std::min(itemRect.width, maxSize),
|
|
std::min(itemRect.height, maxSize));
|
|
|
|
if (surfaceSize.IsEmpty()) {
|
|
// Return early if we know that the size of this mask surface is empty.
|
|
return;
|
|
}
|
|
|
|
MaskImageData imageData(surfaceSize, mManager);
|
|
RefPtr<DrawTarget> dt = imageData.CreateDrawTarget();
|
|
if (!dt || !dt->IsValid()) {
|
|
NS_WARNING("Could not create DrawTarget for mask layer.");
|
|
return;
|
|
}
|
|
|
|
RefPtr<gfxContext> maskCtx = gfxContext::CreateOrNull(dt);
|
|
maskCtx->SetMatrix(Matrix::Translation(-itemRect.TopLeft()));
|
|
maskCtx->Multiply(
|
|
gfxMatrix::Scaling(mParameters.mXScale, mParameters.mYScale));
|
|
|
|
bool isPaintFinished = aMaskItem->PaintMask(mBuilder, maskCtx);
|
|
|
|
RefPtr<ImageContainer> imgContainer =
|
|
imageData.CreateImageAndImageContainer();
|
|
if (!imgContainer) {
|
|
return;
|
|
}
|
|
maskLayer->SetContainer(imgContainer);
|
|
|
|
if (isPaintFinished) {
|
|
*oldUserData = std::move(newUserData);
|
|
}
|
|
aLayer->SetMaskLayer(maskLayer);
|
|
}
|
|
|
|
static bool IsScrollThumbLayer(nsDisplayItem* aItem) {
|
|
return aItem->GetType() == DisplayItemType::TYPE_OWN_LAYER &&
|
|
static_cast<nsDisplayOwnLayer*>(aItem)->IsScrollThumbLayer();
|
|
}
|
|
|
|
template <typename ClearFn, typename SelectFn>
|
|
static void ProcessDisplayItemMarker(DisplayItemEntryType aMarker,
|
|
ClearFn ClearLayerSelectionIfNeeded,
|
|
SelectFn SelectLayerIfNeeded) {
|
|
switch (aMarker) {
|
|
case DisplayItemEntryType::PushTransform:
|
|
case DisplayItemEntryType::PushOpacity:
|
|
SelectLayerIfNeeded();
|
|
break;
|
|
case DisplayItemEntryType::PopTransform:
|
|
case DisplayItemEntryType::PopOpacity:
|
|
ClearLayerSelectionIfNeeded();
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
/*
|
|
* Iterate through the non-clip items in aList and its descendants.
|
|
* For each item we compute the effective clip rect. Each item is assigned
|
|
* to a layer. We invalidate the areas in PaintedLayers where an item
|
|
* has moved from one PaintedLayer to another. Also,
|
|
* aState->mInvalidPaintedContent is invalidated in every PaintedLayer.
|
|
* We set the clip rect for items that generated their own layer, and
|
|
* create a mask layer to do any rounded rect clipping.
|
|
* (PaintedLayers don't need a clip rect on the layer, we clip the items
|
|
* individually when we draw them.)
|
|
* We set the visible rect for all layers, although the actual setting
|
|
* of visible rects for some PaintedLayers is deferred until the calling
|
|
* of ContainerState::Finish.
|
|
*/
|
|
void ContainerState::ProcessDisplayItems(nsDisplayList* aList) {
|
|
AUTO_PROFILER_LABEL("ContainerState::ProcessDisplayItems",
|
|
GRAPHICS_LayerBuilding);
|
|
PerfStats::AutoMetricRecording<PerfStats::Metric::LayerBuilding>
|
|
autoRecording;
|
|
|
|
nsPoint topLeft(0, 0);
|
|
|
|
int32_t maxLayers = StaticPrefs::layers_max_active();
|
|
int layerCount = 0;
|
|
|
|
if (!mManager->IsWidgetLayerManager()) {
|
|
mPaintedLayerDataTree.InitializeForInactiveLayer(
|
|
mContainerAnimatedGeometryRoot);
|
|
}
|
|
|
|
AnimatedGeometryRoot* lastAnimatedGeometryRoot = nullptr;
|
|
nsPoint lastTopLeft;
|
|
|
|
// Tracks the PaintedLayerData that the item will be accumulated in, if it is
|
|
// non-null.
|
|
PaintedLayerData* selectedLayer = nullptr;
|
|
AutoTArray<size_t, 2> opacityIndices;
|
|
|
|
// AGR and ASR for the container item that was flattened.
|
|
AnimatedGeometryRoot* containerAGR = nullptr;
|
|
const ActiveScrolledRoot* containerASR = nullptr;
|
|
nsIFrame* containerReferenceFrame = nullptr;
|
|
RefPtr<TransformClipNode> transformNode = nullptr;
|
|
|
|
const auto InTransform = [&]() { return transformNode; };
|
|
|
|
const auto InOpacity = [&]() {
|
|
return selectedLayer && opacityIndices.Length() > 0;
|
|
};
|
|
|
|
FLBDisplayListIterator iter(mBuilder, aList, this);
|
|
while (iter.HasNext()) {
|
|
DisplayItemEntry e = iter.GetNextEntry();
|
|
DisplayItemEntryType marker = e.mType;
|
|
nsDisplayItem* item = e.mItem;
|
|
MOZ_ASSERT(item);
|
|
DisplayItemType itemType = item->GetType();
|
|
|
|
if (itemType == DisplayItemType::TYPE_COMPOSITOR_HITTEST_INFO) {
|
|
// Override the marker for nsDisplayCompositorHitTestInfo items.
|
|
marker = DisplayItemEntryType::HitTestInfo;
|
|
}
|
|
|
|
const bool inEffect = InTransform() || InOpacity();
|
|
|
|
NS_ASSERTION(mAppUnitsPerDevPixel == AppUnitsPerDevPixel(item),
|
|
"items in a container layer should all have the same app "
|
|
"units per dev pixel");
|
|
|
|
if (mBuilder->NeedToForceTransparentSurfaceForItem(item)) {
|
|
aList->SetNeedsTransparentSurface();
|
|
}
|
|
|
|
LayerState layerState = LayerState::LAYER_NONE;
|
|
if (marker == DisplayItemEntryType::Item) {
|
|
layerState = item->GetLayerState(mBuilder, mManager, mParameters);
|
|
|
|
if (layerState == LayerState::LAYER_INACTIVE &&
|
|
nsDisplayItem::ForceActiveLayers()) {
|
|
layerState = LayerState::LAYER_ACTIVE;
|
|
}
|
|
}
|
|
|
|
AnimatedGeometryRoot* itemAGR = nullptr;
|
|
const ActiveScrolledRoot* itemASR = nullptr;
|
|
const DisplayItemClipChain* layerClipChain = nullptr;
|
|
const DisplayItemClipChain* itemClipChain = nullptr;
|
|
const DisplayItemClip* itemClipPtr = nullptr;
|
|
|
|
bool snap = false;
|
|
nsRect itemContent;
|
|
|
|
if (marker == DisplayItemEntryType::HitTestInfo) {
|
|
const auto& hitTestInfo =
|
|
static_cast<nsDisplayHitTestInfoItem*>(item)->GetHitTestInfo();
|
|
|
|
// Override the layer selection hints for items that have hit test
|
|
// information. This is needed because container items may have different
|
|
// clipping, AGR, or ASR than the child items in them.
|
|
itemAGR = hitTestInfo.mAGR;
|
|
itemASR = hitTestInfo.mASR;
|
|
itemClipChain = hitTestInfo.mClipChain;
|
|
itemClipPtr = hitTestInfo.mClip;
|
|
itemContent = hitTestInfo.mArea;
|
|
} else {
|
|
itemAGR = item->GetAnimatedGeometryRoot();
|
|
itemASR = item->GetActiveScrolledRoot();
|
|
itemClipChain = item->GetClipChain();
|
|
itemClipPtr = &item->GetClip();
|
|
itemContent = item->GetBounds(mBuilder, &snap);
|
|
}
|
|
|
|
if (mManager->IsWidgetLayerManager() && !inEffect) {
|
|
if (itemClipChain && itemClipChain->mASR == itemASR &&
|
|
itemType != DisplayItemType::TYPE_STICKY_POSITION) {
|
|
layerClipChain = itemClipChain->mParent;
|
|
} else {
|
|
layerClipChain = itemClipChain;
|
|
}
|
|
} else {
|
|
// Inside a flattened effect or inactive layer, use container AGR and ASR.
|
|
itemAGR = inEffect ? containerAGR : mContainerAnimatedGeometryRoot;
|
|
itemASR = inEffect ? containerASR : mContainerASR;
|
|
|
|
if (marker == DisplayItemEntryType::HitTestInfo) {
|
|
// Items with hit test info are processed twice, once with ::HitTestInfo
|
|
// marker and then with ::Item marker.
|
|
// With ::HitTestInfo markers, fuse the clip chain of hit test struct,
|
|
// and with ::Item markers, fuse the clip chain of the actual item.
|
|
itemClipChain = mBuilder->FuseClipChainUpTo(itemClipChain, itemASR);
|
|
} else if (!IsEffectEndMarker(marker)) {
|
|
// No need to fuse clip chain for effect end markers, since it was
|
|
// already done for effect start markers.
|
|
item->FuseClipChainUpTo(mBuilder, itemASR);
|
|
itemClipChain = item->GetClipChain();
|
|
}
|
|
|
|
itemClipPtr = itemClipChain ? &itemClipChain->mClip : nullptr;
|
|
}
|
|
|
|
const DisplayItemClip& itemClip =
|
|
itemClipPtr ? *itemClipPtr : DisplayItemClip::NoClip();
|
|
|
|
if (inEffect && marker == DisplayItemEntryType::HitTestInfo) {
|
|
// Fast-path for hit test items inside flattened inactive layers.
|
|
MOZ_ASSERT(selectedLayer);
|
|
selectedLayer->AccumulateHitTestItem(this, item, itemClip, transformNode);
|
|
continue;
|
|
}
|
|
|
|
if (inEffect && marker == DisplayItemEntryType::Item) {
|
|
// Fast-path for items inside flattened inactive layers. This works
|
|
// because the layer state of the item cannot be active, otherwise the
|
|
// parent item would not have been flattened.
|
|
MOZ_ASSERT(selectedLayer);
|
|
selectedLayer->Accumulate(this, item->AsPaintedDisplayItem(), nsIntRect(),
|
|
nsRect(), itemClip, layerState, aList, marker,
|
|
opacityIndices, transformNode);
|
|
continue;
|
|
}
|
|
|
|
// Items outside of flattened effects and non-item markers inside flattened
|
|
// effects are processed here.
|
|
MOZ_ASSERT(!inEffect || (marker != DisplayItemEntryType::Item));
|
|
|
|
if (itemAGR == lastAnimatedGeometryRoot) {
|
|
topLeft = lastTopLeft;
|
|
} else {
|
|
lastTopLeft = topLeft =
|
|
(*itemAGR)->GetOffsetToCrossDoc(mContainerReferenceFrame);
|
|
lastAnimatedGeometryRoot = itemAGR;
|
|
}
|
|
|
|
const ActiveScrolledRoot* scrollMetadataASR =
|
|
layerClipChain
|
|
? ActiveScrolledRoot::PickDescendant(itemASR, layerClipChain->mASR)
|
|
: itemASR;
|
|
|
|
const bool prerenderedTransform =
|
|
itemType == DisplayItemType::TYPE_TRANSFORM &&
|
|
static_cast<nsDisplayTransform*>(item)->MayBeAnimated(mBuilder);
|
|
|
|
nsIntRect itemDrawRect = ScaleToOutsidePixels(itemContent, snap);
|
|
ParentLayerIntRect clipRect;
|
|
if (itemClip.HasClip()) {
|
|
const nsRect& itemClipRect = itemClip.GetClipRect();
|
|
itemContent.IntersectRect(itemContent, itemClipRect);
|
|
clipRect = ViewAs<ParentLayerPixel>(ScaleToNearestPixels(itemClipRect));
|
|
|
|
if (!prerenderedTransform && !IsScrollThumbLayer(item)) {
|
|
itemDrawRect.IntersectRect(itemDrawRect, clipRect.ToUnknownRect());
|
|
}
|
|
|
|
clipRect.MoveBy(ViewAs<ParentLayerPixel>(mParameters.mOffset));
|
|
}
|
|
|
|
if (marker == DisplayItemEntryType::PopTransform) {
|
|
MOZ_ASSERT(transformNode);
|
|
transformNode = transformNode->Parent();
|
|
}
|
|
|
|
nsRect itemVisibleRectAu = itemContent;
|
|
if (transformNode) {
|
|
// If we are within transform, transform itemContent and itemDrawRect.
|
|
MOZ_ASSERT(transformNode);
|
|
|
|
itemContent =
|
|
transformNode->TransformRect(itemContent, mAppUnitsPerDevPixel);
|
|
|
|
itemDrawRect = transformNode->TransformRect(itemDrawRect);
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
nsRect bounds = itemContent;
|
|
|
|
if (marker == DisplayItemEntryType::HitTestInfo || inEffect) {
|
|
bounds.SetEmpty();
|
|
}
|
|
|
|
if (!bounds.IsEmpty() && itemASR != mContainerASR) {
|
|
if (Maybe<nsRect> clip =
|
|
item->GetClipWithRespectToASR(mBuilder, mContainerASR)) {
|
|
bounds = clip.ref();
|
|
}
|
|
}
|
|
|
|
((nsRect&)mAccumulatedChildBounds)
|
|
.UnionRect(mAccumulatedChildBounds, bounds);
|
|
#endif
|
|
|
|
nsIntRect itemVisibleRect = itemDrawRect;
|
|
|
|
// We intersect the building rect with the clipped item bounds to get a
|
|
// tighter visible rect.
|
|
if (!prerenderedTransform) {
|
|
nsRect itemBuildingRect = item->GetBuildingRect();
|
|
|
|
if (transformNode) {
|
|
itemBuildingRect = transformNode->TransformRect(itemBuildingRect,
|
|
mAppUnitsPerDevPixel);
|
|
}
|
|
|
|
itemVisibleRect = itemVisibleRect.Intersect(
|
|
ScaleToOutsidePixels(itemBuildingRect, false));
|
|
}
|
|
|
|
const bool forceInactive = maxLayers != -1 && layerCount >= maxLayers;
|
|
|
|
// Assign the item to a layer
|
|
bool treatInactiveItemAsActive =
|
|
(layerState == LayerState::LAYER_INACTIVE &&
|
|
mLayerBuilder->GetContainingPaintedLayerData());
|
|
if (layerState == LayerState::LAYER_ACTIVE_FORCE ||
|
|
treatInactiveItemAsActive ||
|
|
(!forceInactive && (layerState == LayerState::LAYER_ACTIVE_EMPTY ||
|
|
layerState == LayerState::LAYER_ACTIVE))) {
|
|
layerCount++;
|
|
|
|
// Currently we do not support flattening effects within nested inactive
|
|
// layer trees.
|
|
MOZ_ASSERT(selectedLayer == nullptr);
|
|
MOZ_ASSERT(marker == DisplayItemEntryType::Item);
|
|
|
|
// LayerState::LAYER_ACTIVE_EMPTY means the layer is created just for its
|
|
// metadata. We should never see an empty layer with any visible content!
|
|
NS_ASSERTION(
|
|
layerState != LayerState::LAYER_ACTIVE_EMPTY ||
|
|
itemVisibleRect.IsEmpty(),
|
|
"State is LayerState::LAYER_ACTIVE_EMPTY but visible rect is not.");
|
|
|
|
// As long as the new layer isn't going to be a PaintedLayer,
|
|
// InvalidateForLayerChange doesn't need the new layer pointer.
|
|
// We also need to check the old data now, because BuildLayer
|
|
// can overwrite it.
|
|
DisplayItemData* oldData = mLayerBuilder->GetOldLayerForFrame(
|
|
item->Frame(), item->GetPerFrameKey());
|
|
InvalidateForLayerChange(item, nullptr, oldData);
|
|
|
|
// 3D-transformed layers don't necessarily draw in the order in which
|
|
// they're added to their parent container layer.
|
|
bool mayDrawOutOfOrder = itemType == DisplayItemType::TYPE_TRANSFORM &&
|
|
(item->Combines3DTransformWithAncestors() ||
|
|
item->Frame()->Extend3DContext());
|
|
|
|
// Let mPaintedLayerDataTree know about this item, so that
|
|
// FindPaintedLayerFor and FindOpaqueBackgroundColor are aware of this
|
|
// item, even though it's not in any PaintedLayerDataStack.
|
|
// Ideally we'd only need the "else" case here and have
|
|
// mPaintedLayerDataTree figure out the right clip from the animated
|
|
// geometry root that we give it, but it can't easily figure about
|
|
// overflow:hidden clips on ancestors just by looking at the frame.
|
|
// So we'll do a little hand holding and pass the clip instead of the
|
|
// visible rect for the two important cases.
|
|
nscolor uniformColor = NS_RGBA(0, 0, 0, 0);
|
|
nscolor* uniformColorPtr =
|
|
(mayDrawOutOfOrder || IsInInactiveLayer()) ? nullptr : &uniformColor;
|
|
nsIntRect clipRectUntyped;
|
|
nsIntRect* clipPtr = nullptr;
|
|
if (itemClip.HasClip()) {
|
|
clipRectUntyped = clipRect.ToUnknownRect();
|
|
clipPtr = &clipRectUntyped;
|
|
}
|
|
|
|
bool hasScrolledClip =
|
|
layerClipChain && layerClipChain->mClip.HasClip() &&
|
|
(!ActiveScrolledRoot::IsAncestor(layerClipChain->mASR, itemASR) ||
|
|
itemType == DisplayItemType::TYPE_STICKY_POSITION);
|
|
|
|
if (hasScrolledClip) {
|
|
// If the clip is scrolled, reserve just the area of the clip for
|
|
// layerization, so that elements outside the clip can still merge
|
|
// into the same layer.
|
|
const ActiveScrolledRoot* clipASR = layerClipChain->mASR;
|
|
AnimatedGeometryRoot* clipAGR =
|
|
mBuilder->AnimatedGeometryRootForASR(clipASR);
|
|
nsIntRect scrolledClipRect =
|
|
ScaleToNearestPixels(layerClipChain->mClip.GetClipRect()) +
|
|
mParameters.mOffset;
|
|
mPaintedLayerDataTree.AddingOwnLayer(clipAGR, &scrolledClipRect,
|
|
uniformColorPtr);
|
|
} else if (item->ShouldFixToViewport(mBuilder) && itemClip.HasClip() &&
|
|
item->AnimatedGeometryRootForScrollMetadata() != itemAGR &&
|
|
!nsLayoutUtils::UsesAsyncScrolling(item->Frame())) {
|
|
// This is basically the same as the case above, but for the non-APZ
|
|
// case. At the moment, when APZ is off, there is only the root ASR
|
|
// (because scroll frames without display ports don't create ASRs) and
|
|
// the whole clip chain is always just one fused clip.
|
|
// Bug 1336516 aims to change that and to remove this workaround.
|
|
AnimatedGeometryRoot* clipAGR =
|
|
item->AnimatedGeometryRootForScrollMetadata();
|
|
nsIntRect scrolledClipRect =
|
|
ScaleToNearestPixels(itemClip.GetClipRect()) + mParameters.mOffset;
|
|
mPaintedLayerDataTree.AddingOwnLayer(clipAGR, &scrolledClipRect,
|
|
uniformColorPtr);
|
|
} else if (IsScrollThumbLayer(item) && mManager->IsWidgetLayerManager()) {
|
|
// For scrollbar thumbs, the clip we care about is the clip added by the
|
|
// slider frame.
|
|
mPaintedLayerDataTree.AddingOwnLayer(itemAGR->mParentAGR, clipPtr,
|
|
uniformColorPtr);
|
|
} else if (prerenderedTransform && mManager->IsWidgetLayerManager()) {
|
|
if (itemAGR->mParentAGR) {
|
|
mPaintedLayerDataTree.AddingOwnLayer(itemAGR->mParentAGR, clipPtr,
|
|
uniformColorPtr);
|
|
} else {
|
|
mPaintedLayerDataTree.AddingOwnLayer(itemAGR, nullptr,
|
|
uniformColorPtr);
|
|
}
|
|
} else {
|
|
// Using itemVisibleRect here isn't perfect. itemVisibleRect can be
|
|
// larger or smaller than the potential bounds of item's contents in
|
|
// itemAGR: It's too large if there's a clipped display
|
|
// port somewhere among item's contents (see bug 1147673), and it can
|
|
// be too small if the contents can move, because it only looks at the
|
|
// contents' current bounds and doesn't anticipate any animations.
|
|
// Time will tell whether this is good enough, or whether we need to do
|
|
// something more sophisticated here.
|
|
mPaintedLayerDataTree.AddingOwnLayer(itemAGR, &itemVisibleRect,
|
|
uniformColorPtr);
|
|
}
|
|
|
|
ContainerLayerParameters params = mParameters;
|
|
params.mBackgroundColor = uniformColor;
|
|
params.mLayerCreationHint = GetLayerCreationHint(itemAGR);
|
|
if (!transformNode) {
|
|
params.mItemVisibleRect = &itemVisibleRectAu;
|
|
} else {
|
|
// We only use mItemVisibleRect for getting the visible rect for
|
|
// remote browsers (which should never have inactive transforms), so we
|
|
// avoid doing transforms on itemVisibleRectAu above and can't report
|
|
// an accurate bounds here.
|
|
params.mItemVisibleRect = nullptr;
|
|
}
|
|
params.mScrollMetadataASR =
|
|
ActiveScrolledRoot::IsAncestor(scrollMetadataASR,
|
|
mContainerScrollMetadataASR)
|
|
? mContainerScrollMetadataASR
|
|
: scrollMetadataASR;
|
|
params.mCompositorASR =
|
|
params.mScrollMetadataASR != mContainerScrollMetadataASR
|
|
? params.mScrollMetadataASR
|
|
: mContainerCompositorASR;
|
|
if (itemType == DisplayItemType::TYPE_FIXED_POSITION) {
|
|
params.mCompositorASR = itemASR;
|
|
}
|
|
|
|
if (itemType == DisplayItemType::TYPE_PERSPECTIVE) {
|
|
// Perspective items have a single child item, an nsDisplayTransform.
|
|
// If the perspective item is scrolled, but the perspective-inducing
|
|
// frame is outside the scroll frame (indicated by item->Frame()
|
|
// being outside that scroll frame), we have to take special care to
|
|
// make APZ scrolling work properly. APZ needs us to put the scroll
|
|
// frame's FrameMetrics on our child transform ContainerLayer instead.
|
|
// It's worth investigating whether this ASR adjustment can be done at
|
|
// display item creation time.
|
|
scrollMetadataASR = GetASRForPerspective(
|
|
scrollMetadataASR,
|
|
item->Frame()->GetContainingBlock(nsIFrame::SKIP_SCROLLED_FRAME));
|
|
params.mScrollMetadataASR = scrollMetadataASR;
|
|
itemASR = scrollMetadataASR;
|
|
}
|
|
|
|
// Just use its layer.
|
|
// Set layerContentsVisibleRect.width/height to -1 to indicate we
|
|
// currently don't know. If BuildContainerLayerFor gets called by
|
|
// item->BuildLayer, this will be set to a proper rect.
|
|
nsIntRect layerContentsVisibleRect(0, 0, -1, -1);
|
|
params.mLayerContentsVisibleRect = &layerContentsVisibleRect;
|
|
|
|
// If this display item wants to build inactive layers but we are treating
|
|
// it as active because we are already inside an inactive layer tree,
|
|
// we need to make sure that the display item's clip is reflected in
|
|
// FrameLayerBuilder::mInactiveLayerClip (which is normally set in
|
|
// AddPaintedDisplayItem() when entering an inactive layer tree).
|
|
// We intersect the display item's clip into any existing inactive layer
|
|
// clip.
|
|
const DisplayItemClip* originalInactiveClip = nullptr;
|
|
DisplayItemClip combinedInactiveClip;
|
|
if (treatInactiveItemAsActive) {
|
|
originalInactiveClip = mLayerBuilder->GetInactiveLayerClip();
|
|
if (originalInactiveClip) {
|
|
combinedInactiveClip = *originalInactiveClip;
|
|
}
|
|
DisplayItemClip nestedClip = item->GetClip();
|
|
if (nestedClip.HasClip()) {
|
|
nsRect nestedClipRect = nestedClip.NonRoundedIntersection();
|
|
|
|
// Transform the nested clip to be relative to the same reference
|
|
// frame as the existing mInactiveLayerClip, so that we can intersect
|
|
// them below.
|
|
nestedClipRect = nsLayoutUtils::TransformFrameRectToAncestor(
|
|
item->ReferenceFrame(), nestedClipRect,
|
|
mLayerBuilder->GetContainingPaintedLayerData()->mReferenceFrame);
|
|
|
|
nestedClip.SetTo(nestedClipRect);
|
|
combinedInactiveClip.IntersectWith(nestedClip);
|
|
mLayerBuilder->SetInactiveLayerClip(&combinedInactiveClip);
|
|
}
|
|
}
|
|
|
|
RefPtr<Layer> ownLayer =
|
|
item->AsPaintedDisplayItem()->BuildLayer(mBuilder, mManager, params);
|
|
|
|
// If above we combined a nested clip into mInactiveLayerClip, restore
|
|
// the original inactive layer clip here.
|
|
if (treatInactiveItemAsActive) {
|
|
mLayerBuilder->SetInactiveLayerClip(originalInactiveClip);
|
|
}
|
|
|
|
if (!ownLayer) {
|
|
continue;
|
|
}
|
|
|
|
NS_ASSERTION(!ownLayer->AsPaintedLayer(),
|
|
"Should never have created a dedicated Painted layer!");
|
|
|
|
if (item->BackfaceIsHidden()) {
|
|
ownLayer->SetContentFlags(ownLayer->GetContentFlags() |
|
|
Layer::CONTENT_BACKFACE_HIDDEN);
|
|
} else {
|
|
ownLayer->SetContentFlags(ownLayer->GetContentFlags() &
|
|
~Layer::CONTENT_BACKFACE_HIDDEN);
|
|
}
|
|
|
|
nsRect invalid;
|
|
if (item->IsInvalid(invalid)) {
|
|
ownLayer->SetInvalidRectToVisibleRegion();
|
|
}
|
|
|
|
// If it's not a ContainerLayer, we need to apply the scale transform
|
|
// ourselves.
|
|
if (!ownLayer->AsContainerLayer()) {
|
|
ownLayer->SetPostScale(mParameters.mXScale, mParameters.mYScale);
|
|
}
|
|
|
|
// Update that layer's clip and visible rects.
|
|
NS_ASSERTION(ownLayer->Manager() == mManager, "Wrong manager");
|
|
NS_ASSERTION(!ownLayer->HasUserData(&gLayerManagerUserData),
|
|
"We shouldn't have a FrameLayerBuilder-managed layer here!");
|
|
NS_ASSERTION(itemClip.HasClip() || itemClip.GetRoundedRectCount() == 0,
|
|
"If we have rounded rects, we must have a clip rect");
|
|
|
|
// It has its own layer. Update that layer's clip and visible rects.
|
|
ownLayer->SetClipRect(Nothing());
|
|
ownLayer->SetScrolledClip(Nothing());
|
|
ownLayer->SetAncestorMaskLayers({});
|
|
if (itemClip.HasClip()) {
|
|
ownLayer->SetClipRect(Some(clipRect));
|
|
|
|
// rounded rectangle clipping using mask layers
|
|
// (must be done after visible rect is set on layer)
|
|
if (itemClip.GetRoundedRectCount() > 0) {
|
|
SetupMaskLayer(ownLayer, itemClip);
|
|
}
|
|
}
|
|
|
|
if (hasScrolledClip) {
|
|
const DisplayItemClip& scrolledClip = layerClipChain->mClip;
|
|
LayerClip scrolledLayerClip;
|
|
scrolledLayerClip.SetClipRect(ViewAs<ParentLayerPixel>(
|
|
ScaleToNearestPixels(scrolledClip.GetClipRect()) +
|
|
mParameters.mOffset));
|
|
if (scrolledClip.GetRoundedRectCount() > 0) {
|
|
scrolledLayerClip.SetMaskLayerIndex(
|
|
SetupMaskLayerForScrolledClip(ownLayer.get(), scrolledClip));
|
|
}
|
|
ownLayer->SetScrolledClip(Some(scrolledLayerClip));
|
|
}
|
|
|
|
if (item->GetType() == DisplayItemType::TYPE_MASK) {
|
|
MOZ_ASSERT(itemClip.GetRoundedRectCount() == 0);
|
|
|
|
nsDisplayMasksAndClipPaths* maskItem =
|
|
static_cast<nsDisplayMasksAndClipPaths*>(item);
|
|
SetupMaskLayerForCSSMask(ownLayer, maskItem);
|
|
|
|
if (iter.PeekNext() && iter.PeekNext()->GetType() ==
|
|
DisplayItemType::TYPE_SCROLL_INFO_LAYER) {
|
|
// Since we do build a layer for mask, there is no need for this
|
|
// scroll info layer anymore.
|
|
iter.GetNextItem();
|
|
}
|
|
}
|
|
|
|
// Convert the visible rect to a region and give the item
|
|
// a chance to try restrict it further.
|
|
nsIntRegion itemVisibleRegion = itemVisibleRect;
|
|
nsRegion tightBounds = item->GetTightBounds(mBuilder, &snap);
|
|
if (!tightBounds.IsEmpty()) {
|
|
itemVisibleRegion.AndWith(
|
|
ScaleRegionToOutsidePixels(tightBounds, snap));
|
|
}
|
|
|
|
ContainerLayer* oldContainer = ownLayer->GetParent();
|
|
if (oldContainer && oldContainer != mContainerLayer) {
|
|
oldContainer->RemoveChild(ownLayer);
|
|
}
|
|
NS_ASSERTION(FindIndexOfLayerIn(mNewChildLayers, ownLayer) < 0,
|
|
"Layer already in list???");
|
|
|
|
NewLayerEntry* newLayerEntry = mNewChildLayers.AppendElement();
|
|
newLayerEntry->mLayer = ownLayer;
|
|
newLayerEntry->mAnimatedGeometryRoot = itemAGR;
|
|
newLayerEntry->mASR = itemASR;
|
|
newLayerEntry->mScrollMetadataASR = scrollMetadataASR;
|
|
newLayerEntry->mClipChain = layerClipChain;
|
|
newLayerEntry->mLayerState = layerState;
|
|
if (itemType == DisplayItemType::TYPE_FIXED_POSITION) {
|
|
newLayerEntry->mIsFixedToRootScrollFrame =
|
|
item->Frame()->StyleDisplay()->mPosition ==
|
|
NS_STYLE_POSITION_FIXED &&
|
|
nsLayoutUtils::IsReallyFixedPos(item->Frame());
|
|
}
|
|
|
|
// Don't attempt to flatten compnent alpha layers that are within
|
|
// a forced active layer, or an active transform;
|
|
if (itemType == DisplayItemType::TYPE_TRANSFORM ||
|
|
layerState == LayerState::LAYER_ACTIVE_FORCE) {
|
|
newLayerEntry->mPropagateComponentAlphaFlattening = false;
|
|
}
|
|
|
|
float contentXScale = 1.0f;
|
|
float contentYScale = 1.0f;
|
|
if (ContainerLayer* ownContainer = ownLayer->AsContainerLayer()) {
|
|
contentXScale = 1 / ownContainer->GetPreXScale();
|
|
contentYScale = 1 / ownContainer->GetPreYScale();
|
|
}
|
|
// nsDisplayTransform::BuildLayer must set layerContentsVisibleRect.
|
|
// We rely on this to ensure 3D transforms compute a reasonable
|
|
// layer visible region.
|
|
NS_ASSERTION(itemType != DisplayItemType::TYPE_TRANSFORM ||
|
|
layerContentsVisibleRect.width >= 0,
|
|
"Transform items must set layerContentsVisibleRect!");
|
|
if (mLayerBuilder->IsBuildingRetainedLayers()) {
|
|
newLayerEntry->mLayerContentsVisibleRect = layerContentsVisibleRect;
|
|
if (itemType == DisplayItemType::TYPE_PERSPECTIVE ||
|
|
(itemType == DisplayItemType::TYPE_TRANSFORM &&
|
|
(item->Combines3DTransformWithAncestors() ||
|
|
item->Frame()->Extend3DContext() ||
|
|
item->Frame()->HasPerspective()))) {
|
|
// Give untransformed visible region as outer visible region
|
|
// to avoid failure caused by singular transforms.
|
|
newLayerEntry->mUntransformedVisibleRegion = true;
|
|
newLayerEntry->mVisibleRegion =
|
|
item->GetBuildingRectForChildren().ScaleToOutsidePixels(
|
|
contentXScale, contentYScale, mAppUnitsPerDevPixel);
|
|
} else {
|
|
newLayerEntry->mVisibleRegion = itemVisibleRegion;
|
|
}
|
|
newLayerEntry->mOpaqueRegion = ComputeOpaqueRect(
|
|
item, itemAGR, itemASR, itemClip, aList,
|
|
&newLayerEntry->mHideAllLayersBelow,
|
|
&newLayerEntry->mOpaqueForAnimatedGeometryRootParent);
|
|
} else {
|
|
bool useChildrenVisible = itemType == DisplayItemType::TYPE_TRANSFORM &&
|
|
(item->Frame()->IsPreserve3DLeaf() ||
|
|
item->Frame()->HasPerspective());
|
|
const nsIntRegion& visible =
|
|
useChildrenVisible
|
|
? item->GetBuildingRectForChildren().ScaleToOutsidePixels(
|
|
contentXScale, contentYScale, mAppUnitsPerDevPixel)
|
|
: itemVisibleRegion;
|
|
|
|
SetOuterVisibleRegionForLayer(ownLayer, visible,
|
|
layerContentsVisibleRect.width >= 0
|
|
? &layerContentsVisibleRect
|
|
: nullptr,
|
|
useChildrenVisible);
|
|
}
|
|
if (itemType == DisplayItemType::TYPE_SCROLL_INFO_LAYER) {
|
|
nsDisplayScrollInfoLayer* scrollItem =
|
|
static_cast<nsDisplayScrollInfoLayer*>(item);
|
|
newLayerEntry->mOpaqueForAnimatedGeometryRootParent = false;
|
|
newLayerEntry->mBaseScrollMetadata =
|
|
scrollItem->ComputeScrollMetadata(ownLayer->Manager(), mParameters);
|
|
} else if ((itemType == DisplayItemType::TYPE_SUBDOCUMENT ||
|
|
itemType == DisplayItemType::TYPE_ZOOM ||
|
|
itemType == DisplayItemType::TYPE_RESOLUTION) &&
|
|
StaticPrefs::layout_scroll_root_frame_containers()) {
|
|
newLayerEntry->mBaseScrollMetadata =
|
|
static_cast<nsDisplaySubDocument*>(item)->ComputeScrollMetadata(
|
|
ownLayer->Manager(), mParameters);
|
|
}
|
|
|
|
/**
|
|
* No need to allocate geometry for items that aren't
|
|
* part of a PaintedLayer.
|
|
*/
|
|
if (ownLayer->Manager() == mLayerBuilder->GetRetainingLayerManager()) {
|
|
oldData = mLayerBuilder->GetOldLayerForFrame(item->Frame(),
|
|
item->GetPerFrameKey());
|
|
|
|
mLayerBuilder->StoreDataForFrame(item->AsPaintedDisplayItem(), ownLayer,
|
|
layerState, oldData);
|
|
}
|
|
} else {
|
|
const bool backfaceHidden = item->In3DContextAndBackfaceIsHidden();
|
|
|
|
// When container item hit test info is processed, we need to use the same
|
|
// reference frame as the container children.
|
|
const nsIFrame* referenceFrame = item == mContainerItem
|
|
? mContainerReferenceFrame
|
|
: item->ReferenceFrame();
|
|
|
|
MOZ_ASSERT(item != mContainerItem ||
|
|
marker == DisplayItemEntryType::HitTestInfo);
|
|
|
|
PaintedLayerData* paintedLayerData = selectedLayer;
|
|
|
|
if (!paintedLayerData) {
|
|
paintedLayerData = mPaintedLayerDataTree.FindPaintedLayerFor(
|
|
itemAGR, itemASR, layerClipChain, itemVisibleRect, backfaceHidden,
|
|
[&](PaintedLayerData* aData) {
|
|
NewPaintedLayerData(aData, itemAGR, itemASR, layerClipChain,
|
|
scrollMetadataASR, topLeft, referenceFrame,
|
|
backfaceHidden);
|
|
});
|
|
}
|
|
MOZ_ASSERT(paintedLayerData);
|
|
|
|
if (marker == DisplayItemEntryType::HitTestInfo) {
|
|
MOZ_ASSERT(!transformNode);
|
|
paintedLayerData->AccumulateHitTestItem(this, item, itemClip, nullptr);
|
|
} else {
|
|
paintedLayerData->Accumulate(
|
|
this, item->AsPaintedDisplayItem(), itemVisibleRect, itemContent,
|
|
itemClip, layerState, aList, marker, opacityIndices, transformNode);
|
|
|
|
if (!paintedLayerData->mLayer) {
|
|
// Try to recycle the old layer of this display item.
|
|
RefPtr<PaintedLayer> layer = AttemptToRecyclePaintedLayer(
|
|
itemAGR, item, topLeft,
|
|
inEffect ? containerReferenceFrame : referenceFrame);
|
|
if (layer) {
|
|
paintedLayerData->mLayer = layer;
|
|
|
|
PaintedDisplayItemLayerUserData* userData =
|
|
GetPaintedDisplayItemLayerUserData(layer);
|
|
paintedLayerData->mAssignedDisplayItems.reserve(
|
|
userData->mLastItemCount);
|
|
|
|
NS_ASSERTION(FindIndexOfLayerIn(mNewChildLayers, layer) < 0,
|
|
"Layer already in list???");
|
|
mNewChildLayers[paintedLayerData->mNewChildLayersIndex].mLayer =
|
|
layer.forget();
|
|
}
|
|
}
|
|
}
|
|
|
|
const auto ClearLayerSelectionIfNeeded = [&]() {
|
|
if (!InOpacity() && !InTransform()) {
|
|
selectedLayer = nullptr;
|
|
containerAGR = nullptr;
|
|
containerASR = nullptr;
|
|
containerReferenceFrame = nullptr;
|
|
}
|
|
};
|
|
|
|
const auto SelectLayerIfNeeded = [&]() {
|
|
if (!selectedLayer) {
|
|
selectedLayer = paintedLayerData;
|
|
containerAGR = itemAGR;
|
|
containerASR = itemASR;
|
|
containerReferenceFrame = const_cast<nsIFrame*>(referenceFrame);
|
|
}
|
|
};
|
|
|
|
if (marker == DisplayItemEntryType::PushTransform) {
|
|
nsDisplayTransform* transform = static_cast<nsDisplayTransform*>(item);
|
|
|
|
const Matrix4x4Flagged& matrix = transform->GetTransformForRendering();
|
|
|
|
Maybe<gfx::IntRect> clip;
|
|
if (itemClip.HasClip()) {
|
|
const nsRect nonRoundedClip = itemClip.NonRoundedIntersection();
|
|
clip.emplace(nonRoundedClip.ToNearestPixels(mAppUnitsPerDevPixel));
|
|
}
|
|
|
|
transformNode = new TransformClipNode(transformNode, matrix, clip);
|
|
}
|
|
|
|
ProcessDisplayItemMarker(marker, ClearLayerSelectionIfNeeded,
|
|
SelectLayerIfNeeded);
|
|
}
|
|
|
|
nsDisplayList* childItems = item->GetSameCoordinateSystemChildren();
|
|
if (childItems && childItems->NeedsTransparentSurface()) {
|
|
aList->SetNeedsTransparentSurface();
|
|
}
|
|
}
|
|
|
|
MOZ_ASSERT(selectedLayer == nullptr);
|
|
}
|
|
|
|
void ContainerState::InvalidateForLayerChange(nsDisplayItem* aItem,
|
|
PaintedLayer* aNewLayer,
|
|
DisplayItemData* aData) {
|
|
NS_ASSERTION(aItem->GetPerFrameKey(),
|
|
"Display items that render using Thebes must have a key");
|
|
Layer* oldLayer = aData ? aData->mLayer.get() : nullptr;
|
|
if (aNewLayer != oldLayer && oldLayer) {
|
|
// The item has changed layers.
|
|
// Invalidate the old bounds in the old layer and new bounds in the new
|
|
// layer.
|
|
PaintedLayer* t = oldLayer->AsPaintedLayer();
|
|
if (t && aData->mGeometry) {
|
|
// Note that whenever the layer's scale changes, we invalidate the whole
|
|
// thing, so it doesn't matter whether we are using the old scale at last
|
|
// paint or a new scale here
|
|
#ifdef MOZ_DUMP_PAINTING
|
|
if (nsLayoutUtils::InvalidationDebuggingIsEnabled()) {
|
|
printf_stderr("Display item type %s(%p) changed layers %p to %p!\n",
|
|
aItem->Name(), aItem->Frame(), t, aNewLayer);
|
|
}
|
|
#endif
|
|
InvalidatePreTransformRect(
|
|
t, aData->mGeometry->ComputeInvalidationRegion(), aData->mClip,
|
|
mLayerBuilder->GetLastPaintOffset(t), aData->mTransform);
|
|
}
|
|
// Clear the old geometry so that invalidation thinks the item has been
|
|
// added this paint.
|
|
aData->mGeometry = nullptr;
|
|
}
|
|
}
|
|
|
|
static nsRect GetInvalidationRect(nsDisplayItemGeometry* aGeometry,
|
|
const DisplayItemClip& aClip,
|
|
TransformClipNode* aTransform,
|
|
const int32_t aA2D) {
|
|
const nsRect& rect = aGeometry->ComputeInvalidationRegion();
|
|
const nsRect clipped = aClip.ApplyNonRoundedIntersection(rect);
|
|
|
|
if (aTransform) {
|
|
return aTransform->TransformRect(clipped, aA2D);
|
|
}
|
|
|
|
return clipped;
|
|
}
|
|
|
|
void FrameLayerBuilder::ComputeGeometryChangeForItem(DisplayItemData* aData) {
|
|
nsDisplayItem* item = aData->mItem;
|
|
PaintedLayer* paintedLayer = aData->mLayer->AsPaintedLayer();
|
|
// If aData->mOptLayer is presence, means this item has been optimized to the
|
|
// separate layer. Thus, skip geometry change calculation.
|
|
if (aData->mOptLayer || !item || !paintedLayer) {
|
|
aData->EndUpdate();
|
|
return;
|
|
}
|
|
|
|
// If we're a reused display item, then we can't be invalid, so no need to
|
|
// do an in-depth comparison. If we haven't previously stored geometry
|
|
// for this item (if it was an active layer), then we can't skip this
|
|
// yet.
|
|
nsAutoPtr<nsDisplayItemGeometry> geometry;
|
|
if (aData->mReusedItem && aData->mGeometry) {
|
|
aData->EndUpdate();
|
|
return;
|
|
}
|
|
|
|
PaintedDisplayItemLayerUserData* layerData =
|
|
static_cast<PaintedDisplayItemLayerUserData*>(
|
|
aData->mLayer->GetUserData(&gPaintedDisplayItemLayerUserData));
|
|
nsPoint shift = layerData->mAnimatedGeometryRootOrigin -
|
|
layerData->mLastAnimatedGeometryRootOrigin;
|
|
|
|
const DisplayItemClip& clip = item->GetClip();
|
|
const int32_t appUnitsPerDevPixel = layerData->mAppUnitsPerDevPixel;
|
|
|
|
// If the frame is marked as invalidated, and didn't specify a rect to
|
|
// invalidate then we want to invalidate both the old and new bounds,
|
|
// otherwise we only want to invalidate the changed areas. If we do get an
|
|
// invalid rect, then we want to add this on top of the change areas.
|
|
nsRect invalid;
|
|
nsIntRegion invalidPixels;
|
|
|
|
if (!aData->mGeometry) {
|
|
// This item is being added for the first time, invalidate its entire area.
|
|
geometry = item->AllocateGeometry(mDisplayListBuilder);
|
|
|
|
const nsRect bounds = GetInvalidationRect(geometry, clip, aData->mTransform,
|
|
appUnitsPerDevPixel);
|
|
|
|
invalidPixels = bounds.ScaleToOutsidePixels(
|
|
layerData->mXScale, layerData->mYScale, appUnitsPerDevPixel);
|
|
#ifdef MOZ_DUMP_PAINTING
|
|
if (nsLayoutUtils::InvalidationDebuggingIsEnabled()) {
|
|
printf_stderr("Display item type %s(%p) added to layer %p!\n",
|
|
item->Name(), item->Frame(), aData->mLayer.get());
|
|
}
|
|
#endif
|
|
} else if (aData->mIsInvalid ||
|
|
(item->IsInvalid(invalid) && invalid.IsEmpty())) {
|
|
// Layout marked item/frame as needing repainting (without an explicit
|
|
// rect), invalidate the entire old and new areas.
|
|
geometry = item->AllocateGeometry(mDisplayListBuilder);
|
|
|
|
nsRect oldArea =
|
|
GetInvalidationRect(aData->mGeometry, aData->mClip,
|
|
aData->mOldTransform, appUnitsPerDevPixel);
|
|
oldArea.MoveBy(shift);
|
|
|
|
nsRect newArea = GetInvalidationRect(geometry, clip, aData->mTransform,
|
|
appUnitsPerDevPixel);
|
|
|
|
nsRegion combined;
|
|
combined.Or(oldArea, newArea);
|
|
invalidPixels = combined.ScaleToOutsidePixels(
|
|
layerData->mXScale, layerData->mYScale, appUnitsPerDevPixel);
|
|
#ifdef MOZ_DUMP_PAINTING
|
|
if (nsLayoutUtils::InvalidationDebuggingIsEnabled()) {
|
|
printf_stderr(
|
|
"Display item type %s(%p) (in layer %p) belongs to an "
|
|
"invalidated frame!\n",
|
|
item->Name(), item->Frame(), aData->mLayer.get());
|
|
}
|
|
#endif
|
|
} else {
|
|
// Let the display item check for geometry changes and decide what needs to
|
|
// be repainted.
|
|
const nsRegion& changedFrameInvalidations =
|
|
aData->GetChangedFrameInvalidations();
|
|
|
|
if (aData->mTransform) {
|
|
// If this display item is inside a flattened transform the offset is
|
|
// already included in the root transform, so there is no need to shift.
|
|
shift = nsPoint();
|
|
}
|
|
|
|
aData->mGeometry->MoveBy(shift);
|
|
|
|
nsRegion combined;
|
|
item->ComputeInvalidationRegion(mDisplayListBuilder, aData->mGeometry,
|
|
&combined);
|
|
|
|
// Only allocate a new geometry object if something actually changed,
|
|
// otherwise the existing one should be fine. We always reallocate for
|
|
// inactive layers, since these types don't implement
|
|
// ComputeInvalidateRegion (and rely on the ComputeDifferences call in
|
|
// AddPaintedDisplayItem instead).
|
|
if (!combined.IsEmpty() ||
|
|
aData->mLayerState == LayerState::LAYER_INACTIVE ||
|
|
item->NeedsGeometryUpdates()) {
|
|
geometry = item->AllocateGeometry(mDisplayListBuilder);
|
|
}
|
|
|
|
aData->mClip.AddOffsetAndComputeDifference(
|
|
shift, aData->mGeometry->ComputeInvalidationRegion(), clip,
|
|
geometry ? geometry->ComputeInvalidationRegion()
|
|
: aData->mGeometry->ComputeInvalidationRegion(),
|
|
&combined);
|
|
|
|
// Add in any rect that the frame specified
|
|
combined.Or(combined, invalid);
|
|
combined.Or(combined, changedFrameInvalidations);
|
|
|
|
// Restrict invalidation to the clipped region
|
|
nsRegion clipRegion;
|
|
if (clip.ComputeRegionInClips(&aData->mClip, shift, &clipRegion)) {
|
|
combined.And(combined, clipRegion);
|
|
}
|
|
|
|
invalidPixels = combined.ToOutsidePixels(appUnitsPerDevPixel);
|
|
|
|
if (aData->mTransform) {
|
|
invalidPixels = aData->mTransform->TransformRegion(invalidPixels);
|
|
}
|
|
|
|
invalidPixels.ScaleRoundOut(layerData->mXScale, layerData->mYScale);
|
|
|
|
#ifdef MOZ_DUMP_PAINTING
|
|
if (nsLayoutUtils::InvalidationDebuggingIsEnabled()) {
|
|
if (!combined.IsEmpty()) {
|
|
printf_stderr(
|
|
"Display item type %s(%p) (in layer %p) changed geometry!\n",
|
|
item->Name(), item->Frame(), aData->mLayer.get());
|
|
}
|
|
}
|
|
#endif
|
|
}
|
|
|
|
if (!invalidPixels.IsEmpty()) {
|
|
InvalidatePostTransformRegion(paintedLayer, invalidPixels,
|
|
layerData->mTranslation);
|
|
}
|
|
|
|
aData->EndUpdate(geometry);
|
|
}
|
|
|
|
void FrameLayerBuilder::AddPaintedDisplayItem(PaintedLayerData* aLayerData,
|
|
AssignedDisplayItem& aItem,
|
|
Layer* aLayer) {
|
|
PaintedLayer* layer = aLayerData->mLayer;
|
|
PaintedDisplayItemLayerUserData* paintedData =
|
|
static_cast<PaintedDisplayItemLayerUserData*>(
|
|
layer->GetUserData(&gPaintedDisplayItemLayerUserData));
|
|
|
|
if (layer->Manager() == mRetainingManager) {
|
|
DisplayItemData* data = aItem.mDisplayItemData;
|
|
if (data && !data->mUsed) {
|
|
data->BeginUpdate(layer, aItem.mLayerState, aItem.mItem, aItem.mReused,
|
|
aItem.mMerged);
|
|
} else {
|
|
if (data && data->mUsed) {
|
|
// If the DID has already been used (by a previously merged frame,
|
|
// which is not merged this paint) we must create a new DID for the
|
|
// item.
|
|
aItem.mItem->SetDisplayItemData(nullptr, nullptr);
|
|
}
|
|
data = StoreDataForFrame(aItem.mItem, layer, aItem.mLayerState, nullptr);
|
|
}
|
|
data->mInactiveManager = aItem.mInactiveLayerData
|
|
? aItem.mInactiveLayerData->mLayerManager
|
|
: nullptr;
|
|
// We optimized this PaintedLayer into a ColorLayer/ImageLayer. Store the
|
|
// optimized layer here.
|
|
if (aLayer != layer) {
|
|
data->mOptLayer = aLayer;
|
|
}
|
|
|
|
data->mOldTransform = data->mTransform;
|
|
data->mTransform = aItem.mTransform;
|
|
}
|
|
|
|
if (aItem.mInactiveLayerData) {
|
|
RefPtr<BasicLayerManager> tempManager =
|
|
aItem.mInactiveLayerData->mLayerManager;
|
|
FrameLayerBuilder* layerBuilder = tempManager->GetLayerBuilder();
|
|
Layer* tmpLayer = aItem.mInactiveLayerData->mLayer;
|
|
|
|
// We have no easy way of detecting if this transaction will ever actually
|
|
// get finished. For now, I've just silenced the warning with nested
|
|
// transactions in BasicLayers.cpp
|
|
if (!tmpLayer) {
|
|
tempManager->EndTransaction(nullptr, nullptr);
|
|
tempManager->SetUserData(&gLayerManagerLayerBuilder, nullptr);
|
|
aItem.mItem = nullptr;
|
|
return;
|
|
}
|
|
|
|
bool snap;
|
|
nsRect visibleRect = aItem.mItem->GetBuildingRect().Intersect(
|
|
aItem.mItem->GetBounds(mDisplayListBuilder, &snap));
|
|
nsIntRegion rgn =
|
|
visibleRect.ToOutsidePixels(paintedData->mAppUnitsPerDevPixel);
|
|
|
|
// Convert the visible rect to a region and give the item
|
|
// a chance to try restrict it further.
|
|
nsRegion tightBounds =
|
|
aItem.mItem->GetTightBounds(mDisplayListBuilder, &snap);
|
|
if (!tightBounds.IsEmpty()) {
|
|
rgn.AndWith(
|
|
tightBounds.ToOutsidePixels(paintedData->mAppUnitsPerDevPixel));
|
|
}
|
|
SetOuterVisibleRegion(tmpLayer, &rgn);
|
|
|
|
DisplayItemData* data = nullptr;
|
|
// If BuildLayer didn't call BuildContainerLayerFor, then our new layer
|
|
// won't have been stored in layerBuilder. Manually add it now.
|
|
if (mRetainingManager) {
|
|
#ifdef DEBUG_DISPLAY_ITEM_DATA
|
|
LayerManagerData* parentLmd = static_cast<LayerManagerData*>(
|
|
layer->Manager()->GetUserData(&gLayerManagerUserData));
|
|
LayerManagerData* lmd = static_cast<LayerManagerData*>(
|
|
tempManager->GetUserData(&gLayerManagerUserData));
|
|
lmd->mParent = parentLmd;
|
|
#endif
|
|
data =
|
|
layerBuilder->GetDisplayItemDataForManager(aItem.mItem, tempManager);
|
|
data = layerBuilder->StoreDataForFrame(aItem.mItem, tmpLayer,
|
|
LayerState::LAYER_ACTIVE, data);
|
|
data->mOldTransform = data->mTransform;
|
|
data->mTransform = aItem.mTransform;
|
|
}
|
|
|
|
tempManager->SetRoot(tmpLayer);
|
|
layerBuilder->WillEndTransaction();
|
|
tempManager->AbortTransaction();
|
|
|
|
if (gfxUtils::DumpDisplayList() || gfxEnv::DumpPaint()) {
|
|
fprintf_stderr(
|
|
gfxUtils::sDumpPaintFile,
|
|
"Basic layer tree for painting contents of display item %s(%p):\n",
|
|
aItem.mItem->Name(), aItem.mItem->Frame());
|
|
std::stringstream stream;
|
|
tempManager->Dump(stream, "", gfxEnv::DumpPaintToFile());
|
|
fprint_stderr(
|
|
gfxUtils::sDumpPaintFile,
|
|
stream); // not a typo, fprint_stderr declared in LayersLogging.h
|
|
}
|
|
|
|
nsIntPoint offset =
|
|
GetLastPaintOffset(layer) - GetTranslationForPaintedLayer(layer);
|
|
aItem.mInactiveLayerData->mProps->MoveBy(-offset);
|
|
// Effective transforms are needed by ComputeDifferences().
|
|
tmpLayer->ComputeEffectiveTransforms(Matrix4x4());
|
|
nsIntRegion invalid;
|
|
if (!aItem.mInactiveLayerData->mProps->ComputeDifferences(tmpLayer, invalid,
|
|
nullptr)) {
|
|
nsRect visible = aItem.mItem->Frame()->GetVisualOverflowRect();
|
|
invalid = visible.ToOutsidePixels(paintedData->mAppUnitsPerDevPixel);
|
|
}
|
|
if (aItem.mLayerState == LayerState::LAYER_SVG_EFFECTS) {
|
|
invalid = nsSVGIntegrationUtils::AdjustInvalidAreaForSVGEffects(
|
|
aItem.mItem->Frame(), aItem.mItem->ToReferenceFrame(), invalid);
|
|
}
|
|
if (!invalid.IsEmpty()) {
|
|
#ifdef MOZ_DUMP_PAINTING
|
|
if (nsLayoutUtils::InvalidationDebuggingIsEnabled()) {
|
|
printf_stderr(
|
|
"Inactive LayerManager(%p) for display item %s(%p) has "
|
|
"an invalid region - invalidating layer %p\n",
|
|
tempManager.get(), aItem.mItem->Name(), aItem.mItem->Frame(),
|
|
layer);
|
|
}
|
|
#endif
|
|
|
|
if (data && data->mTransform) {
|
|
invalid = data->mTransform->TransformRegion(invalid);
|
|
}
|
|
|
|
invalid.ScaleRoundOut(paintedData->mXScale, paintedData->mYScale);
|
|
|
|
InvalidatePostTransformRegion(layer, invalid,
|
|
GetTranslationForPaintedLayer(layer));
|
|
}
|
|
}
|
|
}
|
|
|
|
DisplayItemData* FrameLayerBuilder::StoreDataForFrame(
|
|
nsPaintedDisplayItem* aItem, Layer* aLayer, LayerState aState,
|
|
DisplayItemData* aData) {
|
|
MOZ_ASSERT(aItem);
|
|
|
|
if (aData) {
|
|
if (!aData->mUsed) {
|
|
aData->BeginUpdate(aLayer, aState, false, aItem);
|
|
}
|
|
return aData;
|
|
}
|
|
|
|
LayerManagerData* lmd = static_cast<LayerManagerData*>(
|
|
mRetainingManager->GetUserData(&gLayerManagerUserData));
|
|
|
|
RefPtr<DisplayItemData> data = new (aItem->Frame()->PresContext())
|
|
DisplayItemData(lmd, aItem->GetPerFrameKey(), aLayer);
|
|
|
|
data->BeginUpdate(aLayer, aState, true, aItem);
|
|
|
|
lmd->mDisplayItems.push_back(data);
|
|
return data;
|
|
}
|
|
|
|
void FrameLayerBuilder::StoreDataForFrame(nsIFrame* aFrame,
|
|
uint32_t aDisplayItemKey,
|
|
Layer* aLayer, LayerState aState) {
|
|
DisplayItemData* oldData = GetDisplayItemData(aFrame, aDisplayItemKey);
|
|
if (oldData && oldData->mFrameList.Length() == 1) {
|
|
oldData->BeginUpdate(aLayer, aState, false);
|
|
return;
|
|
}
|
|
|
|
LayerManagerData* lmd = static_cast<LayerManagerData*>(
|
|
mRetainingManager->GetUserData(&gLayerManagerUserData));
|
|
|
|
RefPtr<DisplayItemData> data = new (aFrame->PresContext())
|
|
DisplayItemData(lmd, aDisplayItemKey, aLayer, aFrame);
|
|
|
|
data->BeginUpdate(aLayer, aState, true);
|
|
|
|
lmd->mDisplayItems.push_back(data);
|
|
}
|
|
|
|
AssignedDisplayItem::AssignedDisplayItem(
|
|
nsPaintedDisplayItem* aItem, LayerState aLayerState, DisplayItemData* aData,
|
|
const nsRect& aContentRect, DisplayItemEntryType aType,
|
|
const bool aHasOpacity, const RefPtr<TransformClipNode>& aTransform,
|
|
const bool aIsMerged)
|
|
: mItem(aItem),
|
|
mDisplayItemData(aData),
|
|
mTransform(aTransform),
|
|
mContentRect(aContentRect),
|
|
mLayerState(aLayerState),
|
|
mType(aType),
|
|
mReused(aItem->IsReused()),
|
|
mMerged(aIsMerged),
|
|
mHasOpacity(aHasOpacity),
|
|
mHasPaintRect(aItem->HasPaintRect()) {}
|
|
|
|
InactiveLayerData::~InactiveLayerData() {
|
|
if (mLayerManager) {
|
|
mLayerManager->SetUserData(&gLayerManagerLayerBuilder, nullptr);
|
|
}
|
|
}
|
|
|
|
nsIntPoint FrameLayerBuilder::GetLastPaintOffset(PaintedLayer* aLayer) {
|
|
PaintedDisplayItemLayerUserData* layerData =
|
|
GetPaintedDisplayItemLayerUserData(aLayer);
|
|
MOZ_ASSERT(layerData);
|
|
if (layerData->mHasExplicitLastPaintOffset) {
|
|
return layerData->mLastPaintOffset;
|
|
}
|
|
return GetTranslationForPaintedLayer(aLayer);
|
|
}
|
|
|
|
bool FrameLayerBuilder::CheckInLayerTreeCompressionMode() {
|
|
if (mInLayerTreeCompressionMode) {
|
|
return true;
|
|
}
|
|
|
|
// If we wanted to be in layer tree compression mode, but weren't, then
|
|
// scheduled a delayed repaint where we will be.
|
|
mRootPresContext->PresShell()->GetRootFrame()->SchedulePaint(
|
|
nsIFrame::PAINT_DELAYED_COMPRESS, false);
|
|
|
|
return false;
|
|
}
|
|
|
|
void ContainerState::CollectOldLayers() {
|
|
for (Layer* layer = mContainerLayer->GetFirstChild(); layer;
|
|
layer = layer->GetNextSibling()) {
|
|
NS_ASSERTION(!layer->HasUserData(&gMaskLayerUserData),
|
|
"Mask layers should not be part of the layer tree.");
|
|
if (layer->HasUserData(&gPaintedDisplayItemLayerUserData)) {
|
|
NS_ASSERTION(layer->AsPaintedLayer(), "Wrong layer type");
|
|
mPaintedLayersAvailableForRecycling.PutEntry(
|
|
static_cast<PaintedLayer*>(layer));
|
|
}
|
|
|
|
if (Layer* maskLayer = layer->GetMaskLayer()) {
|
|
NS_ASSERTION(maskLayer->GetType() == Layer::TYPE_IMAGE,
|
|
"Could not recycle mask layer, unsupported layer type.");
|
|
mRecycledMaskImageLayers.Put(MaskLayerKey(layer, Nothing()),
|
|
static_cast<ImageLayer*>(maskLayer));
|
|
}
|
|
for (size_t i = 0; i < layer->GetAncestorMaskLayerCount(); i++) {
|
|
Layer* maskLayer = layer->GetAncestorMaskLayerAt(i);
|
|
|
|
NS_ASSERTION(maskLayer->GetType() == Layer::TYPE_IMAGE,
|
|
"Could not recycle mask layer, unsupported layer type.");
|
|
mRecycledMaskImageLayers.Put(MaskLayerKey(layer, Some(i)),
|
|
static_cast<ImageLayer*>(maskLayer));
|
|
}
|
|
}
|
|
}
|
|
|
|
struct OpaqueRegionEntry {
|
|
AnimatedGeometryRoot* mAnimatedGeometryRoot;
|
|
const ActiveScrolledRoot* mASR;
|
|
nsIntRegion mOpaqueRegion;
|
|
};
|
|
|
|
static OpaqueRegionEntry* FindOpaqueRegionEntry(
|
|
nsTArray<OpaqueRegionEntry>& aEntries,
|
|
AnimatedGeometryRoot* aAnimatedGeometryRoot,
|
|
const ActiveScrolledRoot* aASR) {
|
|
for (uint32_t i = 0; i < aEntries.Length(); ++i) {
|
|
OpaqueRegionEntry* d = &aEntries[i];
|
|
if (d->mAnimatedGeometryRoot == aAnimatedGeometryRoot && d->mASR == aASR) {
|
|
return d;
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
static const ActiveScrolledRoot* FindDirectChildASR(
|
|
const ActiveScrolledRoot* aParent, const ActiveScrolledRoot* aDescendant) {
|
|
MOZ_ASSERT(aDescendant, "can't start at the root when looking for a child");
|
|
MOZ_ASSERT(ActiveScrolledRoot::IsAncestor(aParent, aDescendant));
|
|
const ActiveScrolledRoot* directChild = aDescendant;
|
|
while (directChild->mParent != aParent) {
|
|
directChild = directChild->mParent;
|
|
MOZ_RELEASE_ASSERT(directChild, "this must not be null");
|
|
}
|
|
return directChild;
|
|
}
|
|
|
|
static void FixUpFixedPositionLayer(
|
|
Layer* aLayer, const ActiveScrolledRoot* aTargetASR,
|
|
const ActiveScrolledRoot* aLeafScrollMetadataASR,
|
|
const ActiveScrolledRoot* aContainerScrollMetadataASR,
|
|
const ActiveScrolledRoot* aContainerCompositorASR,
|
|
bool aIsFixedToRootScrollFrame) {
|
|
if (!aLayer->GetIsFixedPosition()) {
|
|
return;
|
|
}
|
|
|
|
// Analyze ASRs to figure out if we need to fix up fixedness annotations on
|
|
// the layer. Fixed annotations are required in multiple cases:
|
|
// - Sometimes we set scroll metadata on a layer for a scroll frame that we
|
|
// don't want the layer to be moved by. (We have to do this if there is a
|
|
// scrolled clip that is moved by that scroll frame.) So we set the fixed
|
|
// annotation so that the compositor knows that it should ignore that
|
|
// scroll metadata when determining the layer's position.
|
|
// - Sometimes there is a scroll meta data on aLayer's parent layer for a
|
|
// scroll frame that we don't want aLayer to be moved by. The most common
|
|
// way for this to happen is with containerful root scrolling, where the
|
|
// scroll metadata for the root scroll frame is on a container layer that
|
|
// wraps the whole document's contents.
|
|
// - Sometimes it's just needed for hit testing, i.e. figuring out what
|
|
// scroll frame should be scrolled by events over the layer.
|
|
// A fixed layer needs to be annotated with the scroll ID of the scroll frame
|
|
// that it is *fixed with respect to*, i.e. the outermost scroll frame which
|
|
// does not move the layer. nsDisplayFixedPosition only ever annotates layers
|
|
// with the scroll ID of the presshell's root scroll frame, which is
|
|
// sometimes the wrong thing to do, so we correct it here. Specifically,
|
|
// it's the wrong thing to do if the fixed frame's containing block is a
|
|
// transformed frame - in that case, the fixed frame needs to scroll along
|
|
// with the transformed frame instead of being fixed with respect to the rsf.
|
|
// (It would be nice to compute the annotation only in one place and get it
|
|
// right, instead of fixing it up after the fact like this, but this will
|
|
// need to do for now.)
|
|
// compositorASR is the ASR that the layer would move with on the compositor
|
|
// if there were no fixed annotation on it.
|
|
const ActiveScrolledRoot* compositorASR =
|
|
aLeafScrollMetadataASR == aContainerScrollMetadataASR
|
|
? aContainerCompositorASR
|
|
: aLeafScrollMetadataASR;
|
|
|
|
// The goal of the annotation is to have the layer move with aTargetASR.
|
|
if (compositorASR && aTargetASR != compositorASR) {
|
|
// Mark this layer as fixed with respect to the child scroll frame of
|
|
// aTargetASR.
|
|
aLayer->SetFixedPositionData(
|
|
FindDirectChildASR(aTargetASR, compositorASR)->GetViewId(),
|
|
aLayer->GetFixedPositionAnchor(), aLayer->GetFixedPositionSides());
|
|
} else {
|
|
// Remove the fixed annotation from the layer, unless this layers is fixed
|
|
// to the document's root scroll frame - in that case, the annotation is
|
|
// needed for hit testing, because fixed layers in iframes should scroll
|
|
// the iframe, even though their position is not affected by scrolling in
|
|
// the iframe. (The APZ hit testing code has a special case for this.)
|
|
// nsDisplayFixedPosition has annotated this layer with the document's
|
|
// root scroll frame's scroll id.
|
|
aLayer->SetIsFixedPosition(aIsFixedToRootScrollFrame);
|
|
}
|
|
}
|
|
|
|
void ContainerState::SetupScrollingMetadata(NewLayerEntry* aEntry) {
|
|
if (!mBuilder->IsPaintingToWindow()) {
|
|
// async scrolling not possible, and async scrolling info not computed
|
|
// for this paint.
|
|
return;
|
|
}
|
|
|
|
const ActiveScrolledRoot* startASR = aEntry->mScrollMetadataASR;
|
|
const ActiveScrolledRoot* stopASR = mContainerScrollMetadataASR;
|
|
if (!ActiveScrolledRoot::IsAncestor(stopASR, startASR)) {
|
|
if (ActiveScrolledRoot::IsAncestor(startASR, stopASR)) {
|
|
// startASR and stopASR are in the same branch of the ASR tree, but
|
|
// startASR is closer to the root. Just start at stopASR so that the loop
|
|
// below doesn't actually do anything.
|
|
startASR = stopASR;
|
|
} else {
|
|
// startASR and stopASR are in different branches of the
|
|
// ASR tree. Find a common ancestor and make that the stopASR.
|
|
// This can happen when there's a scrollable frame inside a fixed layer
|
|
// which has a scrolled clip. As far as scroll metadata is concerned,
|
|
// the scroll frame's scroll metadata will be a child of the scroll ID
|
|
// that scrolls the clip on the fixed layer. But as far as ASRs are
|
|
// concerned, those two ASRs are siblings, parented to the ASR of the
|
|
// fixed layer.
|
|
do {
|
|
stopASR = stopASR->mParent;
|
|
} while (!ActiveScrolledRoot::IsAncestor(stopASR, startASR));
|
|
}
|
|
}
|
|
|
|
FixUpFixedPositionLayer(aEntry->mLayer, aEntry->mASR, startASR,
|
|
mContainerScrollMetadataASR, mContainerCompositorASR,
|
|
aEntry->mIsFixedToRootScrollFrame);
|
|
|
|
AutoTArray<ScrollMetadata, 2> metricsArray;
|
|
if (aEntry->mBaseScrollMetadata) {
|
|
metricsArray.AppendElement(*aEntry->mBaseScrollMetadata);
|
|
|
|
// The base FrameMetrics was not computed by the nsIScrollableframe, so it
|
|
// should not have a mask layer.
|
|
MOZ_ASSERT(!aEntry->mBaseScrollMetadata->HasMaskLayer());
|
|
}
|
|
|
|
// Any extra mask layers we need to attach to ScrollMetadatas.
|
|
// The list may already contain an entry added for the layer's scrolled clip
|
|
// so add to it rather than overwriting it (we clear the list when recycling
|
|
// a layer).
|
|
nsTArray<RefPtr<Layer>> maskLayers(
|
|
aEntry->mLayer->GetAllAncestorMaskLayers());
|
|
|
|
// Iterate over the ASR chain and create the corresponding scroll metadatas.
|
|
// This loop is slightly tricky because the scrollframe-to-clip relationship
|
|
// is reversed between DisplayItemClipChain and ScrollMetadata:
|
|
// - DisplayItemClipChain associates the clip with the scroll frame that
|
|
// this clip is *moved by*, i.e. the clip is moving inside the scroll
|
|
// frame.
|
|
// - ScrollMetaData associates the scroll frame with the clip that's
|
|
// *just outside* the scroll frame, i.e. not moved by the scroll frame
|
|
// itself.
|
|
// This discrepancy means that the leaf clip item of the clip chain is never
|
|
// applied to any scroll meta data. Instead, it was applied earlier as the
|
|
// layer's clip (or fused with the painted layer contents), or it was applied
|
|
// as a ScrolledClip on the layer.
|
|
const DisplayItemClipChain* clipChain = aEntry->mClipChain;
|
|
|
|
for (const ActiveScrolledRoot* asr = startASR; asr != stopASR;
|
|
asr = asr->mParent) {
|
|
if (!asr) {
|
|
MOZ_ASSERT_UNREACHABLE("Should have encountered stopASR on the way up.");
|
|
break;
|
|
}
|
|
if (clipChain && clipChain->mASR == asr) {
|
|
clipChain = clipChain->mParent;
|
|
}
|
|
|
|
nsIScrollableFrame* scrollFrame = asr->mScrollableFrame;
|
|
const DisplayItemClip* clip = (clipChain && clipChain->mASR == asr->mParent)
|
|
? &clipChain->mClip
|
|
: nullptr;
|
|
|
|
scrollFrame->ClipLayerToDisplayPort(aEntry->mLayer, clip, mParameters);
|
|
|
|
Maybe<ScrollMetadata> metadata;
|
|
if (mCachedScrollMetadata.mASR == asr &&
|
|
mCachedScrollMetadata.mClip == clip) {
|
|
metadata = mCachedScrollMetadata.mMetadata;
|
|
} else {
|
|
metadata = scrollFrame->ComputeScrollMetadata(aEntry->mLayer->Manager(),
|
|
mContainerReferenceFrame,
|
|
Some(mParameters), clip);
|
|
scrollFrame->NotifyApzTransaction();
|
|
mCachedScrollMetadata.mASR = asr;
|
|
mCachedScrollMetadata.mClip = clip;
|
|
mCachedScrollMetadata.mMetadata = metadata;
|
|
}
|
|
|
|
if (!metadata) {
|
|
continue;
|
|
}
|
|
|
|
if (clip && clip->HasClip() && clip->GetRoundedRectCount() > 0) {
|
|
// The clip in between this scrollframe and its ancestor scrollframe
|
|
// requires a mask layer. Since this mask layer should not move with
|
|
// the APZC associated with this FrameMetrics, we attach the mask
|
|
// layer as an additional, separate clip.
|
|
Maybe<size_t> nextIndex = Some(maskLayers.Length());
|
|
RefPtr<Layer> maskLayer =
|
|
CreateMaskLayer(aEntry->mLayer, *clip, nextIndex);
|
|
if (maskLayer) {
|
|
MOZ_ASSERT(metadata->HasScrollClip());
|
|
metadata->ScrollClip().SetMaskLayerIndex(nextIndex);
|
|
maskLayers.AppendElement(maskLayer);
|
|
}
|
|
}
|
|
|
|
metricsArray.AppendElement(*metadata);
|
|
}
|
|
|
|
// Watch out for FrameMetrics copies in profiles
|
|
aEntry->mLayer->SetScrollMetadata(metricsArray);
|
|
aEntry->mLayer->SetAncestorMaskLayers(maskLayers);
|
|
}
|
|
|
|
static inline Maybe<ParentLayerIntRect> GetStationaryClipInContainer(
|
|
Layer* aLayer) {
|
|
if (size_t metricsCount = aLayer->GetScrollMetadataCount()) {
|
|
return aLayer->GetScrollMetadata(metricsCount - 1).GetClipRect();
|
|
}
|
|
return aLayer->GetClipRect();
|
|
}
|
|
|
|
void ContainerState::PostprocessRetainedLayers(
|
|
nsIntRegion* aOpaqueRegionForContainer) {
|
|
AutoTArray<OpaqueRegionEntry, 4> opaqueRegions;
|
|
bool hideAll = false;
|
|
int32_t opaqueRegionForContainer = -1;
|
|
|
|
for (int32_t i = mNewChildLayers.Length() - 1; i >= 0; --i) {
|
|
NewLayerEntry* e = &mNewChildLayers.ElementAt(i);
|
|
if (!e->mLayer) {
|
|
continue;
|
|
}
|
|
|
|
OpaqueRegionEntry* data =
|
|
FindOpaqueRegionEntry(opaqueRegions, e->mAnimatedGeometryRoot, e->mASR);
|
|
|
|
SetupScrollingMetadata(e);
|
|
|
|
if (hideAll) {
|
|
e->mVisibleRegion.SetEmpty();
|
|
} else if (!e->mLayer->IsScrollbarContainer()) {
|
|
Maybe<ParentLayerIntRect> clipRect =
|
|
GetStationaryClipInContainer(e->mLayer);
|
|
if (clipRect && opaqueRegionForContainer >= 0 &&
|
|
opaqueRegions[opaqueRegionForContainer].mOpaqueRegion.Contains(
|
|
clipRect->ToUnknownRect())) {
|
|
e->mVisibleRegion.SetEmpty();
|
|
} else if (data) {
|
|
e->mVisibleRegion.Sub(e->mVisibleRegion, data->mOpaqueRegion);
|
|
}
|
|
}
|
|
|
|
SetOuterVisibleRegionForLayer(e->mLayer, e->mVisibleRegion,
|
|
e->mLayerContentsVisibleRect.width >= 0
|
|
? &e->mLayerContentsVisibleRect
|
|
: nullptr,
|
|
e->mUntransformedVisibleRegion);
|
|
|
|
if (!e->mOpaqueRegion.IsEmpty()) {
|
|
AnimatedGeometryRoot* animatedGeometryRootToCover =
|
|
e->mAnimatedGeometryRoot;
|
|
const ActiveScrolledRoot* asrToCover = e->mASR;
|
|
if (e->mOpaqueForAnimatedGeometryRootParent &&
|
|
e->mAnimatedGeometryRoot->mParentAGR ==
|
|
mContainerAnimatedGeometryRoot) {
|
|
animatedGeometryRootToCover = mContainerAnimatedGeometryRoot;
|
|
asrToCover = mContainerASR;
|
|
data = FindOpaqueRegionEntry(opaqueRegions, animatedGeometryRootToCover,
|
|
asrToCover);
|
|
}
|
|
|
|
if (!data) {
|
|
if (animatedGeometryRootToCover == mContainerAnimatedGeometryRoot &&
|
|
asrToCover == mContainerASR) {
|
|
NS_ASSERTION(opaqueRegionForContainer == -1, "Already found it?");
|
|
opaqueRegionForContainer = opaqueRegions.Length();
|
|
}
|
|
data = opaqueRegions.AppendElement();
|
|
data->mAnimatedGeometryRoot = animatedGeometryRootToCover;
|
|
data->mASR = asrToCover;
|
|
}
|
|
|
|
nsIntRegion clippedOpaque = e->mOpaqueRegion;
|
|
Maybe<ParentLayerIntRect> clipRect = e->mLayer->GetCombinedClipRect();
|
|
if (clipRect) {
|
|
clippedOpaque.AndWith(clipRect->ToUnknownRect());
|
|
}
|
|
if (e->mLayer->GetScrolledClip()) {
|
|
// The clip can move asynchronously, so we can't rely on opaque parts
|
|
// staying visible.
|
|
clippedOpaque.SetEmpty();
|
|
} else if (e->mHideAllLayersBelow) {
|
|
hideAll = true;
|
|
}
|
|
data->mOpaqueRegion.Or(data->mOpaqueRegion, clippedOpaque);
|
|
}
|
|
|
|
if (e->mLayer->GetType() == Layer::TYPE_READBACK) {
|
|
// ReadbackLayers need to accurately read what's behind them. So,
|
|
// we don't want to do any occlusion culling of layers behind them.
|
|
// Theoretically we could just punch out the ReadbackLayer's rectangle
|
|
// from all mOpaqueRegions, but that's probably not worth doing.
|
|
opaqueRegions.Clear();
|
|
opaqueRegionForContainer = -1;
|
|
}
|
|
}
|
|
|
|
if (opaqueRegionForContainer >= 0) {
|
|
aOpaqueRegionForContainer->Or(
|
|
*aOpaqueRegionForContainer,
|
|
opaqueRegions[opaqueRegionForContainer].mOpaqueRegion);
|
|
}
|
|
}
|
|
|
|
void ContainerState::Finish(uint32_t* aTextContentFlags,
|
|
const nsIntRect& aContainerPixelBounds,
|
|
nsDisplayList* aChildItems) {
|
|
mPaintedLayerDataTree.Finish();
|
|
|
|
if (!StaticPrefs::layout_scroll_root_frame_containers()) {
|
|
// Bug 1336544 tracks re-enabling this assertion in the
|
|
// StaticPrefs::layout_scroll_root_frame_containers() case.
|
|
NS_ASSERTION(mContainerBounds.IsEqualInterior(mAccumulatedChildBounds),
|
|
"Bounds computation mismatch");
|
|
}
|
|
|
|
if (mLayerBuilder->IsBuildingRetainedLayers()) {
|
|
nsIntRegion containerOpaqueRegion;
|
|
PostprocessRetainedLayers(&containerOpaqueRegion);
|
|
if (containerOpaqueRegion.Contains(aContainerPixelBounds)) {
|
|
aChildItems->SetIsOpaque();
|
|
}
|
|
}
|
|
|
|
uint32_t textContentFlags = 0;
|
|
|
|
// Make sure that current/existing layers are added to the parent and are
|
|
// in the correct order.
|
|
Layer* layer = nullptr;
|
|
Layer* prevChild = nullptr;
|
|
for (uint32_t i = 0; i < mNewChildLayers.Length(); ++i, prevChild = layer) {
|
|
if (!mNewChildLayers[i].mLayer) {
|
|
continue;
|
|
}
|
|
|
|
layer = mNewChildLayers[i].mLayer;
|
|
|
|
if (!layer->GetVisibleRegion().IsEmpty()) {
|
|
textContentFlags |= layer->GetContentFlags() &
|
|
(Layer::CONTENT_COMPONENT_ALPHA |
|
|
Layer::CONTENT_COMPONENT_ALPHA_DESCENDANT |
|
|
Layer::CONTENT_DISABLE_FLATTENING);
|
|
}
|
|
|
|
if (!layer->GetParent()) {
|
|
// This is not currently a child of the container, so just add it
|
|
// now.
|
|
mContainerLayer->InsertAfter(layer, prevChild);
|
|
} else {
|
|
NS_ASSERTION(layer->GetParent() == mContainerLayer,
|
|
"Layer shouldn't be the child of some other container");
|
|
if (layer->GetPrevSibling() != prevChild) {
|
|
mContainerLayer->RepositionChild(layer, prevChild);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Remove old layers that have become unused.
|
|
if (!layer) {
|
|
layer = mContainerLayer->GetFirstChild();
|
|
} else {
|
|
layer = layer->GetNextSibling();
|
|
}
|
|
while (layer) {
|
|
Layer* layerToRemove = layer;
|
|
layer = layer->GetNextSibling();
|
|
mContainerLayer->RemoveChild(layerToRemove);
|
|
}
|
|
|
|
*aTextContentFlags = textContentFlags;
|
|
}
|
|
|
|
static void RestrictScaleToMaxLayerSize(Size& aScale,
|
|
const nsRect& aVisibleRect,
|
|
nsIFrame* aContainerFrame,
|
|
Layer* aContainerLayer) {
|
|
if (!aContainerLayer->Manager()->IsWidgetLayerManager()) {
|
|
return;
|
|
}
|
|
|
|
nsIntRect pixelSize = aVisibleRect.ScaleToOutsidePixels(
|
|
aScale.width, aScale.height,
|
|
aContainerFrame->PresContext()->AppUnitsPerDevPixel());
|
|
|
|
int32_t maxLayerSize = aContainerLayer->GetMaxLayerSize();
|
|
|
|
if (pixelSize.width > maxLayerSize) {
|
|
float scale = (float)pixelSize.width / maxLayerSize;
|
|
scale = gfxUtils::ClampToScaleFactor(scale);
|
|
aScale.width /= scale;
|
|
}
|
|
if (pixelSize.height > maxLayerSize) {
|
|
float scale = (float)pixelSize.height / maxLayerSize;
|
|
scale = gfxUtils::ClampToScaleFactor(scale);
|
|
aScale.height /= scale;
|
|
}
|
|
}
|
|
|
|
static nsSize ComputeDesiredDisplaySizeForAnimation(nsIFrame* aContainerFrame) {
|
|
// Use the size of the nearest widget as the maximum size. This
|
|
// is important since it might be a popup that is bigger than the
|
|
// pres context's size.
|
|
nsPresContext* presContext = aContainerFrame->PresContext();
|
|
nsIWidget* widget = aContainerFrame->GetNearestWidget();
|
|
if (widget) {
|
|
return LayoutDevicePixel::ToAppUnits(widget->GetClientSize(),
|
|
presContext->AppUnitsPerDevPixel());
|
|
}
|
|
|
|
return presContext->GetVisibleArea().Size();
|
|
}
|
|
|
|
/* static */
|
|
Size FrameLayerBuilder::ChooseScale(nsIFrame* aContainerFrame,
|
|
nsDisplayItem* aContainerItem,
|
|
const nsRect& aVisibleRect, float aXScale,
|
|
float aYScale, const Matrix& aTransform2d,
|
|
bool aCanDraw2D) {
|
|
Size scale;
|
|
// XXX Should we do something for 3D transforms?
|
|
if (aCanDraw2D && !aContainerFrame->Combines3DTransformWithAncestors() &&
|
|
!aContainerFrame->HasPerspective()) {
|
|
// If the container's transform is animated off main thread, fix a suitable
|
|
// scale size for animation
|
|
if (aContainerItem &&
|
|
aContainerItem->GetType() == DisplayItemType::TYPE_TRANSFORM &&
|
|
// FIXME: What we need is only transform, rotate, and scale, not
|
|
// translate, so it's be better to use a property set, instead of
|
|
// display item type here.
|
|
EffectCompositor::HasAnimationsForCompositor(
|
|
aContainerFrame, DisplayItemType::TYPE_TRANSFORM)) {
|
|
nsSize displaySize =
|
|
ComputeDesiredDisplaySizeForAnimation(aContainerFrame);
|
|
// compute scale using the animation on the container, taking ancestors in
|
|
// to account
|
|
nsSize scaledVisibleSize = nsSize(aVisibleRect.Width() * aXScale,
|
|
aVisibleRect.Height() * aYScale);
|
|
scale = nsLayoutUtils::ComputeSuitableScaleForAnimation(
|
|
aContainerFrame, scaledVisibleSize, displaySize);
|
|
// multiply by the scale inherited from ancestors--we use a uniform
|
|
// scale factor to prevent blurring when the layer is rotated.
|
|
float incomingScale = std::max(aXScale, aYScale);
|
|
scale.width *= incomingScale;
|
|
scale.height *= incomingScale;
|
|
} else {
|
|
// Scale factors are normalized to a power of 2 to reduce the number of
|
|
// resolution changes
|
|
scale = aTransform2d.ScaleFactors(true);
|
|
// For frames with a changing scale transform round scale factors up to
|
|
// nearest power-of-2 boundary so that we don't keep having to redraw
|
|
// the content as it scales up and down. Rounding up to nearest
|
|
// power-of-2 boundary ensures we never scale up, only down --- avoiding
|
|
// jaggies. It also ensures we never scale down by more than a factor of
|
|
// 2, avoiding bad downscaling quality.
|
|
Matrix frameTransform;
|
|
if (ActiveLayerTracker::IsScaleSubjectToAnimation(aContainerFrame)) {
|
|
scale.width = gfxUtils::ClampToScaleFactor(scale.width);
|
|
scale.height = gfxUtils::ClampToScaleFactor(scale.height);
|
|
|
|
// Limit animated scale factors to not grow excessively beyond the
|
|
// display size.
|
|
nsSize maxScale(4, 4);
|
|
if (!aVisibleRect.IsEmpty()) {
|
|
nsSize displaySize =
|
|
ComputeDesiredDisplaySizeForAnimation(aContainerFrame);
|
|
maxScale = Max(maxScale, displaySize / aVisibleRect.Size());
|
|
}
|
|
if (scale.width > maxScale.width) {
|
|
scale.width = gfxUtils::ClampToScaleFactor(maxScale.width, true);
|
|
}
|
|
if (scale.height > maxScale.height) {
|
|
scale.height = gfxUtils::ClampToScaleFactor(maxScale.height, true);
|
|
}
|
|
} else {
|
|
// XXX Do we need to move nearly-integer values to integers here?
|
|
}
|
|
}
|
|
// If the scale factors are too small, just use 1.0. The content is being
|
|
// scaled out of sight anyway.
|
|
if (fabs(scale.width) < 1e-8 || fabs(scale.height) < 1e-8) {
|
|
scale = Size(1.0, 1.0);
|
|
}
|
|
} else {
|
|
scale = Size(1.0, 1.0);
|
|
}
|
|
|
|
return scale;
|
|
}
|
|
|
|
static bool ChooseScaleAndSetTransform(
|
|
FrameLayerBuilder* aLayerBuilder, nsDisplayListBuilder* aDisplayListBuilder,
|
|
nsIFrame* aContainerFrame, nsDisplayItem* aContainerItem,
|
|
const nsRect& aVisibleRect, const Matrix4x4* aTransform,
|
|
const ContainerLayerParameters& aIncomingScale, ContainerLayer* aLayer,
|
|
ContainerLayerParameters& aOutgoingScale) {
|
|
nsIntPoint offset;
|
|
|
|
Matrix4x4 transform =
|
|
Matrix4x4::Scaling(aIncomingScale.mXScale, aIncomingScale.mYScale, 1.0);
|
|
if (aTransform) {
|
|
// aTransform is applied first, then the scale is applied to the result
|
|
transform = (*aTransform) * transform;
|
|
// Set any matrix entries close to integers to be those exact integers.
|
|
// This protects against floating-point inaccuracies causing problems
|
|
// in the checks below.
|
|
// We use the fixed epsilon version here because we don't want the nudging
|
|
// to depend on the scroll position.
|
|
transform.NudgeToIntegersFixedEpsilon();
|
|
}
|
|
Matrix transform2d;
|
|
if (aContainerFrame && aLayerBuilder->GetContainingPaintedLayerData() &&
|
|
(!aTransform ||
|
|
(aTransform->Is2D(&transform2d) && !transform2d.HasNonTranslation()))) {
|
|
// When we have an inactive ContainerLayer, translate the container by the
|
|
// offset to the reference frame (and offset all child layers by the
|
|
// reverse) so that the coordinate space of the child layers isn't affected
|
|
// by scrolling. This gets confusing for complicated transform (since we'd
|
|
// have to compute the scale factors for the matrix), so we don't bother.
|
|
// Any frames that are building an nsDisplayTransform for a css transform
|
|
// would have 0,0 as their offset to the reference frame, so this doesn't
|
|
// matter.
|
|
nsPoint appUnitOffset =
|
|
aDisplayListBuilder->ToReferenceFrame(aContainerFrame);
|
|
nscoord appUnitsPerDevPixel =
|
|
aContainerFrame->PresContext()->AppUnitsPerDevPixel();
|
|
offset = nsIntPoint(NS_lround(NSAppUnitsToDoublePixels(
|
|
appUnitOffset.x, appUnitsPerDevPixel) *
|
|
aIncomingScale.mXScale),
|
|
NS_lround(NSAppUnitsToDoublePixels(
|
|
appUnitOffset.y, appUnitsPerDevPixel) *
|
|
aIncomingScale.mYScale));
|
|
}
|
|
transform.PostTranslate(offset.x + aIncomingScale.mOffset.x,
|
|
offset.y + aIncomingScale.mOffset.y, 0);
|
|
|
|
if (transform.IsSingular()) {
|
|
return false;
|
|
}
|
|
|
|
bool canDraw2D = transform.CanDraw2D(&transform2d);
|
|
Size scale = FrameLayerBuilder::ChooseScale(
|
|
aContainerFrame, aContainerItem, aVisibleRect, aIncomingScale.mXScale,
|
|
aIncomingScale.mYScale, transform2d, canDraw2D);
|
|
|
|
// If this is a transform container layer, then pre-rendering might
|
|
// mean we try render a layer bigger than the max texture size. If we have
|
|
// tiling, that's not a problem, since we'll automatically choose a tiled
|
|
// layer for layers of that size. If not, we need to apply clamping to
|
|
// prevent this.
|
|
if (aTransform && !StaticPrefs::layers_enable_tiles()) {
|
|
RestrictScaleToMaxLayerSize(scale, aVisibleRect, aContainerFrame, aLayer);
|
|
}
|
|
|
|
// Store the inverse of our resolution-scale on the layer
|
|
aLayer->SetBaseTransform(transform);
|
|
aLayer->SetPreScale(1.0f / scale.width, 1.0f / scale.height);
|
|
aLayer->SetInheritedScale(aIncomingScale.mXScale, aIncomingScale.mYScale);
|
|
|
|
aOutgoingScale = ContainerLayerParameters(scale.width, scale.height, -offset,
|
|
aIncomingScale);
|
|
if (aTransform) {
|
|
aOutgoingScale.mInTransformedSubtree = true;
|
|
if (ActiveLayerTracker::IsTransformAnimated(aDisplayListBuilder,
|
|
aContainerFrame)) {
|
|
aOutgoingScale.mInActiveTransformedSubtree = true;
|
|
}
|
|
}
|
|
if ((aLayerBuilder->IsBuildingRetainedLayers() &&
|
|
(!canDraw2D || transform2d.HasNonIntegerTranslation())) ||
|
|
aContainerFrame->Extend3DContext() ||
|
|
aContainerFrame->Combines3DTransformWithAncestors() ||
|
|
// For async transform animation, the value would be changed at
|
|
// any time, integer translation is not always true.
|
|
aContainerFrame->HasAnimationOfTransform()) {
|
|
aOutgoingScale.mDisableSubpixelAntialiasingInDescendants = true;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
already_AddRefed<ContainerLayer> FrameLayerBuilder::BuildContainerLayerFor(
|
|
nsDisplayListBuilder* aBuilder, LayerManager* aManager,
|
|
nsIFrame* aContainerFrame, nsDisplayItem* aContainerItem,
|
|
nsDisplayList* aChildren, const ContainerLayerParameters& aParameters,
|
|
const Matrix4x4* aTransform, uint32_t aFlags) {
|
|
uint32_t containerDisplayItemKey =
|
|
aContainerItem ? aContainerItem->GetPerFrameKey() : 0;
|
|
NS_ASSERTION(aContainerFrame,
|
|
"Container display items here should have a frame");
|
|
NS_ASSERTION(!aContainerItem || aContainerItem->Frame() == aContainerFrame,
|
|
"Container display item must match given frame");
|
|
|
|
if (!aParameters.mXScale || !aParameters.mYScale) {
|
|
return nullptr;
|
|
}
|
|
|
|
RefPtr<ContainerLayer> containerLayer;
|
|
if (aManager == mRetainingManager) {
|
|
// Using GetOldLayerFor will search merged frames, as well as the underlying
|
|
// frame. The underlying frame can change when a page scrolls, so this
|
|
// avoids layer recreation in the situation that a new underlying frame is
|
|
// picked for a layer.
|
|
Layer* oldLayer = nullptr;
|
|
if (aContainerItem) {
|
|
oldLayer = GetOldLayerFor(aContainerItem);
|
|
} else {
|
|
DisplayItemData* data =
|
|
GetOldLayerForFrame(aContainerFrame, containerDisplayItemKey);
|
|
if (data) {
|
|
oldLayer = data->mLayer;
|
|
}
|
|
}
|
|
|
|
if (oldLayer) {
|
|
NS_ASSERTION(oldLayer->Manager() == aManager, "Wrong manager");
|
|
if (oldLayer->HasUserData(&gPaintedDisplayItemLayerUserData)) {
|
|
// The old layer for this item is actually our PaintedLayer
|
|
// because we rendered its layer into that PaintedLayer. So we
|
|
// don't actually have a retained container layer.
|
|
} else {
|
|
NS_ASSERTION(oldLayer->GetType() == Layer::TYPE_CONTAINER,
|
|
"Wrong layer type");
|
|
containerLayer = static_cast<ContainerLayer*>(oldLayer);
|
|
ResetLayerStateForRecycling(containerLayer);
|
|
}
|
|
}
|
|
}
|
|
if (!containerLayer) {
|
|
// No suitable existing layer was found.
|
|
containerLayer = aManager->CreateContainerLayer();
|
|
if (!containerLayer) return nullptr;
|
|
}
|
|
|
|
if (aContainerItem &&
|
|
aContainerItem->GetType() == DisplayItemType::TYPE_SCROLL_INFO_LAYER) {
|
|
// Empty layers only have metadata and should never have display items. We
|
|
// early exit because later, invalidation will walk up the frame tree to
|
|
// determine which painted layer gets invalidated. Since an empty layer
|
|
// should never have anything to paint, it should never be invalidated.
|
|
NS_ASSERTION(aChildren->IsEmpty(), "Should have no children");
|
|
return containerLayer.forget();
|
|
}
|
|
|
|
const ActiveScrolledRoot* containerASR =
|
|
aContainerItem ? aContainerItem->GetActiveScrolledRoot() : nullptr;
|
|
const ActiveScrolledRoot* containerScrollMetadataASR =
|
|
aParameters.mScrollMetadataASR;
|
|
const ActiveScrolledRoot* containerCompositorASR = aParameters.mCompositorASR;
|
|
|
|
if (!aContainerItem && StaticPrefs::layout_scroll_root_frame_containers()) {
|
|
containerASR = aBuilder->ActiveScrolledRootForRootScrollframe();
|
|
containerScrollMetadataASR = containerASR;
|
|
containerCompositorASR = containerASR;
|
|
}
|
|
|
|
ContainerLayerParameters scaleParameters;
|
|
nsRect bounds =
|
|
aChildren->GetClippedBoundsWithRespectToASR(aBuilder, containerASR);
|
|
nsRect childrenVisible =
|
|
aContainerItem ? aContainerItem->GetBuildingRectForChildren()
|
|
: aContainerFrame->GetVisualOverflowRectRelativeToSelf();
|
|
if (!ChooseScaleAndSetTransform(
|
|
this, aBuilder, aContainerFrame, aContainerItem,
|
|
bounds.Intersect(childrenVisible), aTransform, aParameters,
|
|
containerLayer, scaleParameters)) {
|
|
return nullptr;
|
|
}
|
|
|
|
if (mRetainingManager) {
|
|
if (aContainerItem) {
|
|
nsPaintedDisplayItem* item = aContainerItem->AsPaintedDisplayItem();
|
|
MOZ_ASSERT(item, "Only painted display items should build layers");
|
|
|
|
DisplayItemData* data =
|
|
GetDisplayItemDataForManager(item, mRetainingManager);
|
|
StoreDataForFrame(item, containerLayer, LayerState::LAYER_ACTIVE, data);
|
|
} else {
|
|
StoreDataForFrame(aContainerFrame, containerDisplayItemKey,
|
|
containerLayer, LayerState::LAYER_ACTIVE);
|
|
}
|
|
}
|
|
|
|
nsIntRect pixBounds;
|
|
nscoord appUnitsPerDevPixel;
|
|
|
|
nscolor backgroundColor = NS_RGBA(0, 0, 0, 0);
|
|
if (aFlags & CONTAINER_ALLOW_PULL_BACKGROUND_COLOR) {
|
|
backgroundColor = aParameters.mBackgroundColor;
|
|
}
|
|
|
|
uint32_t flags;
|
|
ContainerState state(aBuilder, aManager, aManager->GetLayerBuilder(),
|
|
aContainerFrame, aContainerItem, bounds, containerLayer,
|
|
scaleParameters, backgroundColor, containerASR,
|
|
containerScrollMetadataASR, containerCompositorASR);
|
|
|
|
state.ProcessDisplayItems(aChildren);
|
|
|
|
// Set CONTENT_COMPONENT_ALPHA if any of our children have it.
|
|
// This is suboptimal ... a child could have text that's over transparent
|
|
// pixels in its own layer, but over opaque parts of previous siblings.
|
|
pixBounds = state.ScaleToOutsidePixels(bounds, false);
|
|
appUnitsPerDevPixel = state.GetAppUnitsPerDevPixel();
|
|
state.Finish(&flags, pixBounds, aChildren);
|
|
|
|
// CONTENT_COMPONENT_ALPHA is propogated up to the nearest CONTENT_OPAQUE
|
|
// ancestor so that BasicLayerManager knows when to copy the background into
|
|
// pushed groups. Accelerated layers managers can't necessarily do this (only
|
|
// when the visible region is a simple rect), so we propogate
|
|
// CONTENT_COMPONENT_ALPHA_DESCENDANT all the way to the root.
|
|
if (flags & Layer::CONTENT_COMPONENT_ALPHA) {
|
|
flags |= Layer::CONTENT_COMPONENT_ALPHA_DESCENDANT;
|
|
}
|
|
|
|
// Make sure that rounding the visible region out didn't add any area
|
|
// we won't paint
|
|
if (aChildren->IsOpaque() && !aChildren->NeedsTransparentSurface()) {
|
|
bounds.ScaleRoundIn(scaleParameters.mXScale, scaleParameters.mYScale);
|
|
if (bounds.Contains(ToAppUnits(pixBounds, appUnitsPerDevPixel))) {
|
|
// Clear CONTENT_COMPONENT_ALPHA and add CONTENT_OPAQUE instead.
|
|
flags &= ~Layer::CONTENT_COMPONENT_ALPHA;
|
|
flags |= Layer::CONTENT_OPAQUE;
|
|
}
|
|
}
|
|
containerLayer->SetContentFlags(flags);
|
|
// If aContainerItem is non-null some BuildContainerLayer further up the
|
|
// call stack is responsible for setting containerLayer's visible region.
|
|
if (!aContainerItem) {
|
|
containerLayer->SetVisibleRegion(
|
|
LayerIntRegion::FromUnknownRegion(pixBounds));
|
|
}
|
|
if (aParameters.mLayerContentsVisibleRect) {
|
|
*aParameters.mLayerContentsVisibleRect =
|
|
pixBounds + scaleParameters.mOffset;
|
|
}
|
|
|
|
nsPresContext::ClearNotifySubDocInvalidationData(containerLayer);
|
|
|
|
return containerLayer.forget();
|
|
}
|
|
|
|
Layer* FrameLayerBuilder::GetLeafLayerFor(nsDisplayListBuilder* aBuilder,
|
|
nsDisplayItem* aItem) {
|
|
Layer* layer = GetOldLayerFor(aItem);
|
|
if (!layer) {
|
|
return nullptr;
|
|
}
|
|
if (layer->HasUserData(&gPaintedDisplayItemLayerUserData)) {
|
|
// This layer was created to render Thebes-rendered content for this
|
|
// display item. The display item should not use it for its own
|
|
// layer rendering.
|
|
return nullptr;
|
|
}
|
|
ResetLayerStateForRecycling(layer);
|
|
return layer;
|
|
}
|
|
|
|
/* static */
|
|
void FrameLayerBuilder::InvalidateAllLayers(LayerManager* aManager) {
|
|
LayerManagerData* data = static_cast<LayerManagerData*>(
|
|
aManager->GetUserData(&gLayerManagerUserData));
|
|
if (data) {
|
|
data->mInvalidateAllLayers = true;
|
|
}
|
|
}
|
|
|
|
/* static */
|
|
void FrameLayerBuilder::InvalidateAllLayersForFrame(nsIFrame* aFrame) {
|
|
const SmallPointerArray<DisplayItemData>& array = aFrame->DisplayItemData();
|
|
|
|
for (uint32_t i = 0; i < array.Length(); i++) {
|
|
DisplayItemData::AssertDisplayItemData(array.ElementAt(i))
|
|
->mParent->mInvalidateAllLayers = true;
|
|
}
|
|
}
|
|
|
|
/* static */
|
|
Layer* FrameLayerBuilder::GetDedicatedLayer(nsIFrame* aFrame,
|
|
DisplayItemType aDisplayItemKey) {
|
|
// TODO: This isn't completely correct, since a frame could exist as a layer
|
|
// in the normal widget manager, and as a different layer (or no layer)
|
|
// in the secondary manager
|
|
|
|
const SmallPointerArray<DisplayItemData>& array = aFrame->DisplayItemData();
|
|
;
|
|
|
|
for (uint32_t i = 0; i < array.Length(); i++) {
|
|
DisplayItemData* element =
|
|
DisplayItemData::AssertDisplayItemData(array.ElementAt(i));
|
|
if (!element->mParent->mLayerManager->IsWidgetLayerManager()) {
|
|
continue;
|
|
}
|
|
if (GetDisplayItemTypeFromKey(element->mDisplayItemKey) ==
|
|
aDisplayItemKey) {
|
|
if (element->mOptLayer) {
|
|
return element->mOptLayer;
|
|
}
|
|
|
|
Layer* layer = element->mLayer;
|
|
if (!layer->HasUserData(&gColorLayerUserData) &&
|
|
!layer->HasUserData(&gImageLayerUserData) &&
|
|
!layer->HasUserData(&gPaintedDisplayItemLayerUserData)) {
|
|
return layer;
|
|
}
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
/* static */
|
|
void FrameLayerBuilder::EnumerateGenerationForDedicatedLayers(
|
|
const nsIFrame* aFrame, const AnimationGenerationCallback& aCallback) {
|
|
std::bitset<static_cast<uint32_t>(DisplayItemType::TYPE_MAX)> notFoundTypes;
|
|
for (auto displayItemType : LayerAnimationInfo::sDisplayItemTypes) {
|
|
notFoundTypes.set(static_cast<uint32_t>(displayItemType));
|
|
}
|
|
|
|
for (auto displayItemType : LayerAnimationInfo::sDisplayItemTypes) {
|
|
// For transform animations, the animation is on the primary frame but
|
|
// |aFrame| is the style frame.
|
|
const nsIFrame* frameToQuery =
|
|
displayItemType == DisplayItemType::TYPE_TRANSFORM
|
|
? nsLayoutUtils::GetPrimaryFrameFromStyleFrame(aFrame)
|
|
: aFrame;
|
|
const nsIFrame::DisplayItemDataArray& displayItemDataArray =
|
|
frameToQuery->DisplayItemData();
|
|
|
|
for (uint32_t i = 0; i < displayItemDataArray.Length(); i++) {
|
|
DisplayItemData* element = DisplayItemData::AssertDisplayItemData(
|
|
displayItemDataArray.ElementAt(i));
|
|
if (!element->mParent->mLayerManager->IsWidgetLayerManager()) {
|
|
continue;
|
|
}
|
|
|
|
if (GetDisplayItemTypeFromKey(element->mDisplayItemKey) !=
|
|
displayItemType) {
|
|
continue;
|
|
}
|
|
|
|
notFoundTypes.reset(static_cast<uint32_t>(displayItemType));
|
|
|
|
Maybe<uint64_t> generation;
|
|
if (element->mOptLayer) {
|
|
generation = element->mOptLayer->GetAnimationGeneration();
|
|
} else if (!element->mLayer->HasUserData(&gColorLayerUserData) &&
|
|
!element->mLayer->HasUserData(&gImageLayerUserData) &&
|
|
!element->mLayer->HasUserData(
|
|
&gPaintedDisplayItemLayerUserData)) {
|
|
generation = element->mLayer->GetAnimationGeneration();
|
|
}
|
|
|
|
if (!aCallback(generation, displayItemType)) {
|
|
return;
|
|
}
|
|
|
|
break;
|
|
}
|
|
}
|
|
|
|
// Bail out if we have already enumerated all possible layers for the given
|
|
// display item types.
|
|
if (notFoundTypes.none()) {
|
|
return;
|
|
}
|
|
|
|
// If there are any display item types that the nsIFrame doesn't have, we need
|
|
// to call the callback function for them respectively.
|
|
for (auto displayItemType : LayerAnimationInfo::sDisplayItemTypes) {
|
|
if (notFoundTypes[static_cast<uint32_t>(displayItemType)] &&
|
|
!aCallback(Nothing(), displayItemType)) {
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
gfxSize FrameLayerBuilder::GetPaintedLayerScaleForFrame(nsIFrame* aFrame) {
|
|
MOZ_ASSERT(aFrame, "need a frame");
|
|
|
|
nsPresContext* presCtx = aFrame->PresContext()->GetRootPresContext();
|
|
|
|
if (!presCtx) {
|
|
presCtx = aFrame->PresContext();
|
|
MOZ_ASSERT(presCtx);
|
|
}
|
|
|
|
nsIFrame* root = presCtx->PresShell()->GetRootFrame();
|
|
|
|
MOZ_ASSERT(root);
|
|
|
|
float resolution = presCtx->PresShell()->GetResolution();
|
|
|
|
Matrix4x4Flagged transform = Matrix4x4::Scaling(resolution, resolution, 1.0);
|
|
if (aFrame != root) {
|
|
// aTransform is applied first, then the scale is applied to the result
|
|
transform = nsLayoutUtils::GetTransformToAncestor(aFrame, root) * transform;
|
|
}
|
|
|
|
Matrix transform2d;
|
|
if (transform.CanDraw2D(&transform2d)) {
|
|
return ThebesMatrix(transform2d).ScaleFactors(true);
|
|
}
|
|
|
|
return gfxSize(1.0, 1.0);
|
|
}
|
|
|
|
#ifdef MOZ_DUMP_PAINTING
|
|
static void DebugPaintItem(DrawTarget& aDrawTarget, nsPresContext* aPresContext,
|
|
nsPaintedDisplayItem* aItem,
|
|
nsDisplayListBuilder* aBuilder) {
|
|
bool snap;
|
|
Rect bounds = NSRectToRect(aItem->GetBounds(aBuilder, &snap),
|
|
aPresContext->AppUnitsPerDevPixel());
|
|
|
|
const IntSize size = IntSize::Truncate(bounds.width, bounds.height);
|
|
if (size.IsEmpty()) {
|
|
return;
|
|
}
|
|
|
|
RefPtr<DrawTarget> tempDT =
|
|
aDrawTarget.CreateSimilarDrawTarget(size, SurfaceFormat::B8G8R8A8);
|
|
RefPtr<gfxContext> context = gfxContext::CreateOrNull(tempDT);
|
|
if (!context) {
|
|
// Leave this as crash, it's in the debugging code, we want to know
|
|
gfxDevCrash(LogReason::InvalidContext)
|
|
<< "DebugPaintItem context problem " << gfx::hexa(tempDT);
|
|
return;
|
|
}
|
|
context->SetMatrix(Matrix::Translation(-bounds.x, -bounds.y));
|
|
|
|
aItem->Paint(aBuilder, context);
|
|
RefPtr<SourceSurface> surface = tempDT->Snapshot();
|
|
DumpPaintedImage(aItem, surface);
|
|
|
|
aDrawTarget.DrawSurface(surface, bounds, Rect(Point(0, 0), bounds.Size()));
|
|
|
|
aItem->SetPainted();
|
|
}
|
|
#endif
|
|
|
|
/* static */
|
|
void FrameLayerBuilder::RecomputeVisibilityForItems(
|
|
std::vector<AssignedDisplayItem>& aItems, nsDisplayListBuilder* aBuilder,
|
|
const nsIntRegion& aRegionToDraw, nsRect& aPreviousRectToDraw,
|
|
const nsIntPoint& aOffset, int32_t aAppUnitsPerDevPixel, float aXScale,
|
|
float aYScale) {
|
|
// Update visible regions. We perform visibility analysis to take account
|
|
// of occlusion culling.
|
|
nsRegion visible = aRegionToDraw.ToAppUnits(aAppUnitsPerDevPixel);
|
|
visible.MoveBy(NSIntPixelsToAppUnits(aOffset.x, aAppUnitsPerDevPixel),
|
|
NSIntPixelsToAppUnits(aOffset.y, aAppUnitsPerDevPixel));
|
|
visible.ScaleInverseRoundOut(aXScale, aYScale);
|
|
|
|
// We're going to read from previousRectToDraw for every iteration, let's do
|
|
// that on the stack, and just update the heap allocated one now. By the end
|
|
// of this function {visible} will have been modified by occlusion culling.
|
|
nsRect previousRectToDraw = aPreviousRectToDraw;
|
|
aPreviousRectToDraw = visible.GetBounds();
|
|
|
|
for (uint32_t i = aItems.size(); i > 0; --i) {
|
|
AssignedDisplayItem* cdi = &aItems[i - 1];
|
|
if (!cdi->mItem) {
|
|
continue;
|
|
}
|
|
|
|
if (cdi->mHasPaintRect &&
|
|
!cdi->mContentRect.Intersects(visible.GetBounds()) &&
|
|
!cdi->mContentRect.Intersects(previousRectToDraw)) {
|
|
continue;
|
|
}
|
|
|
|
if (IsEffectEndMarker(cdi->mType) || cdi->HasOpacity() ||
|
|
cdi->HasTransform()) {
|
|
// The visibility calculations are skipped when the item is an effect end
|
|
// marker, or when the display item is within a flattened effect group.
|
|
// This is because RecomputeVisibility has already been called for the
|
|
// group item, and all the children.
|
|
continue;
|
|
}
|
|
|
|
const DisplayItemClip& clip = cdi->mItem->GetClip();
|
|
|
|
NS_ASSERTION(AppUnitsPerDevPixel(cdi->mItem) == aAppUnitsPerDevPixel,
|
|
"a painted layer should contain items only at the same zoom");
|
|
|
|
MOZ_ASSERT(clip.HasClip() || clip.GetRoundedRectCount() == 0,
|
|
"If we have rounded rects, we must have a clip rect");
|
|
|
|
if (!clip.IsRectAffectedByClip(visible.GetBounds())) {
|
|
cdi->mItem->RecomputeVisibility(aBuilder, &visible);
|
|
continue;
|
|
}
|
|
|
|
// Do a little dance to account for the fact that we're clipping
|
|
// to cdi->mClipRect
|
|
nsRegion clipped;
|
|
clipped.And(visible, clip.NonRoundedIntersection());
|
|
nsRegion finalClipped = clipped;
|
|
cdi->mItem->RecomputeVisibility(aBuilder, &finalClipped);
|
|
// If we have rounded clip rects, don't subtract from the visible
|
|
// region since we aren't displaying everything inside the rect.
|
|
if (clip.GetRoundedRectCount() == 0) {
|
|
nsRegion removed;
|
|
removed.Sub(clipped, finalClipped);
|
|
nsRegion newVisible;
|
|
newVisible.Sub(visible, removed);
|
|
// Don't let the visible region get too complex.
|
|
if (newVisible.GetNumRects() <= 15) {
|
|
visible = std::move(newVisible);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Tracks and caches the item clip.
|
|
*/
|
|
struct ItemClipTracker {
|
|
explicit ItemClipTracker(gfxContext* aContext,
|
|
const int32_t aAppUnitsPerDevPixel)
|
|
: mContext(aContext),
|
|
mHasClip(false),
|
|
mAppUnitsPerDevPixel(aAppUnitsPerDevPixel) {}
|
|
|
|
/**
|
|
* Returns true if a clip is set.
|
|
*/
|
|
bool HasClip() const { return mHasClip; }
|
|
|
|
/**
|
|
* Returns true if the given |aClip| is set.
|
|
*/
|
|
bool HasClip(const DisplayItemClip* aClip) const {
|
|
MOZ_ASSERT(aClip && aClip->HasClip());
|
|
return mHasClip && mCurrentClip == *aClip;
|
|
}
|
|
|
|
/**
|
|
* Removes the clip, if there is one.
|
|
*/
|
|
void Restore() {
|
|
if (mCurrentClip.HasClip()) {
|
|
mCurrentClip = DisplayItemClip::NoClip();
|
|
}
|
|
|
|
if (!HasClip()) {
|
|
return;
|
|
}
|
|
|
|
mContext->Restore();
|
|
mHasClip = false;
|
|
};
|
|
|
|
/**
|
|
* Sets the clip to |aClip|, if it is not set already.
|
|
*/
|
|
void ChangeClipIfNeeded(const DisplayItemClip* aClip) {
|
|
MOZ_ASSERT(aClip && aClip->HasClip());
|
|
|
|
if (HasClip(aClip)) {
|
|
// Reuse the old clip.
|
|
return;
|
|
}
|
|
|
|
// Remove the previous clip and save the current state.
|
|
Restore();
|
|
mContext->Save();
|
|
|
|
// Apply the new clip.
|
|
mHasClip = true;
|
|
mCurrentClip = *aClip;
|
|
mCurrentClip.ApplyTo(mContext, mAppUnitsPerDevPixel);
|
|
mContext->NewPath();
|
|
}
|
|
|
|
private:
|
|
gfxContext* mContext;
|
|
bool mHasClip;
|
|
const int32_t mAppUnitsPerDevPixel;
|
|
|
|
DisplayItemClip mCurrentClip;
|
|
};
|
|
|
|
/**
|
|
* Tracks clips managed by |PushClip()| and |PopClip()|.
|
|
* If allowed by the caller, the top clip may be reused when a new clip that
|
|
* matches the previous one is pushed to the stack.
|
|
*/
|
|
struct ClipStack {
|
|
explicit ClipStack(gfxContext* aContext, const int32_t aAppUnitsPerDevPixel)
|
|
: mContext(aContext),
|
|
mAppUnitsPerDevPixel(aAppUnitsPerDevPixel),
|
|
mDeferredPopClip(false) {}
|
|
|
|
~ClipStack() {
|
|
MOZ_ASSERT(!mDeferredPopClip);
|
|
MOZ_ASSERT(!HasClips());
|
|
}
|
|
|
|
/**
|
|
* Returns true if there are clips set.
|
|
*/
|
|
bool HasClips() const { return mClips.Length() > 0; }
|
|
|
|
/**
|
|
* Returns the clip at the top of the stack.
|
|
*/
|
|
const DisplayItemClip& TopClip() const {
|
|
MOZ_ASSERT(HasClips());
|
|
return mClips.LastElement();
|
|
}
|
|
|
|
/**
|
|
* Returns true if the top clip matches the given |aClip|.
|
|
*/
|
|
bool TopClipMatches(const DisplayItemClip& aClip) {
|
|
return HasClips() && TopClip() == aClip;
|
|
}
|
|
|
|
/**
|
|
* Pops the current top clip. If |aDeferPopClip| is true, the top clip will
|
|
* not be popped before the next call to |PopClip(false)|.
|
|
* This allows the previously set clip to be reused during the next
|
|
* |PushClip()| call, if the new clip is identical with the top clip.
|
|
*/
|
|
void PopClip(bool aDeferPopClip) {
|
|
MOZ_ASSERT(HasClips());
|
|
|
|
if (aDeferPopClip) {
|
|
// Do not allow reusing clip with nested effects.
|
|
MOZ_ASSERT(!mDeferredPopClip);
|
|
mDeferredPopClip = true;
|
|
return;
|
|
}
|
|
|
|
if (TopClip().HasClip()) {
|
|
mContext->Restore();
|
|
}
|
|
|
|
mClips.RemoveLastElement();
|
|
mDeferredPopClip = false;
|
|
}
|
|
|
|
/**
|
|
* Pops the clip, if a call to |PopClip()| has been deferred.
|
|
*/
|
|
void PopDeferredClip() {
|
|
if (mDeferredPopClip) {
|
|
PopClip(false);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Pushes the given |aClip| to the stack.
|
|
*/
|
|
void PushClip(const DisplayItemClip& aClip) {
|
|
if (mDeferredPopClip && TopClipMatches(aClip)) {
|
|
// Reuse this clip. Defer the decision to reuse it again until the next
|
|
// call to PopClip().
|
|
mDeferredPopClip = false;
|
|
return;
|
|
}
|
|
|
|
PopDeferredClip();
|
|
|
|
mClips.AppendElement(aClip);
|
|
|
|
// Save the current state and apply new clip, if needed.
|
|
if (aClip.HasClip()) {
|
|
mContext->Save();
|
|
aClip.ApplyTo(mContext, mAppUnitsPerDevPixel);
|
|
mContext->NewPath();
|
|
}
|
|
}
|
|
|
|
private:
|
|
gfxContext* mContext;
|
|
const int32_t mAppUnitsPerDevPixel;
|
|
AutoTArray<DisplayItemClip, 2> mClips;
|
|
bool mDeferredPopClip;
|
|
};
|
|
|
|
/**
|
|
* Returns a clip for the given |aItem|. If the clip can be simplified to not
|
|
* include rounded rects, |aOutClip| is used to store the simplified clip.
|
|
*/
|
|
static const DisplayItemClip* GetItemClip(const nsDisplayItem* aItem,
|
|
DisplayItemClip& aOutClip) {
|
|
const DisplayItemClip& clip = aItem->GetClip();
|
|
|
|
if (!clip.HasClip()) {
|
|
return nullptr;
|
|
}
|
|
|
|
if (clip.GetRoundedRectCount() > 0 &&
|
|
!clip.IsRectClippedByRoundedCorner(aItem->GetPaintRect())) {
|
|
aOutClip.SetTo(clip.GetClipRect());
|
|
return &aOutClip;
|
|
}
|
|
|
|
return &clip;
|
|
}
|
|
|
|
/**
|
|
* Pushes a new opacity group for |aContext| based on |aItem|.
|
|
*/
|
|
static void PushOpacity(gfxContext* aContext, AssignedDisplayItem& aItem) {
|
|
MOZ_ASSERT(aItem.mType == DisplayItemEntryType::PushOpacity ||
|
|
aItem.mType == DisplayItemEntryType::PushOpacityWithBg);
|
|
MOZ_ASSERT(aItem.mItem->GetType() == DisplayItemType::TYPE_OPACITY);
|
|
nsDisplayOpacity* item = static_cast<nsDisplayOpacity*>(aItem.mItem);
|
|
|
|
const float opacity = item->GetOpacity();
|
|
if (aItem.mType == DisplayItemEntryType::PushOpacityWithBg) {
|
|
aContext->PushGroupAndCopyBackground(gfxContentType::COLOR_ALPHA, opacity);
|
|
} else {
|
|
aContext->PushGroupForBlendBack(gfxContentType::COLOR_ALPHA, opacity);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Pushes the transformation matrix of |aItem| into |aMatrixStack| and sets the
|
|
* accumulated transform as the current transformation matrix for |aContext|.
|
|
*/
|
|
static void PushTransform(gfxContext* aContext, AssignedDisplayItem& aItem,
|
|
nsDisplayListBuilder* aBuilder,
|
|
MatrixStack4x4& aMatrixStack,
|
|
const Matrix4x4Flagged& aBaseMatrix) {
|
|
MOZ_ASSERT(aItem.mType == DisplayItemEntryType::PushTransform);
|
|
MOZ_ASSERT(aItem.mItem->GetType() == DisplayItemType::TYPE_TRANSFORM);
|
|
|
|
nsDisplayTransform* item = static_cast<nsDisplayTransform*>(aItem.mItem);
|
|
if (item->ShouldSkipTransform(aBuilder)) {
|
|
aMatrixStack.Push(Matrix4x4Flagged());
|
|
} else {
|
|
aMatrixStack.Push(item->GetTransformForRendering());
|
|
}
|
|
|
|
gfx::Matrix4x4Flagged matrix = aMatrixStack.CurrentMatrix() * aBaseMatrix;
|
|
gfx::Matrix matrix2d;
|
|
DebugOnly<bool> ok = matrix.CanDraw2D(&matrix2d);
|
|
MOZ_ASSERT(ok);
|
|
|
|
aContext->SetMatrix(matrix2d);
|
|
}
|
|
|
|
static void UpdateEffectTracking(int& aOpacityLevel, int& aTransformLevel,
|
|
const DisplayItemEntryType aType) {
|
|
switch (aType) {
|
|
case DisplayItemEntryType::PushOpacity:
|
|
case DisplayItemEntryType::PushOpacityWithBg:
|
|
aOpacityLevel++;
|
|
break;
|
|
case DisplayItemEntryType::PopOpacity:
|
|
aOpacityLevel--;
|
|
break;
|
|
case DisplayItemEntryType::PushTransform:
|
|
aTransformLevel++;
|
|
break;
|
|
case DisplayItemEntryType::PopTransform:
|
|
aTransformLevel--;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
MOZ_ASSERT(aOpacityLevel >= 0 && aTransformLevel >= 0);
|
|
}
|
|
|
|
void FrameLayerBuilder::PaintItems(std::vector<AssignedDisplayItem>& aItems,
|
|
const nsIntRect& aRect, gfxContext* aContext,
|
|
nsDisplayListBuilder* aBuilder,
|
|
nsPresContext* aPresContext,
|
|
const nsIntPoint& aOffset, float aXScale,
|
|
float aYScale) {
|
|
DrawTarget& aDrawTarget = *aContext->GetDrawTarget();
|
|
|
|
int32_t appUnitsPerDevPixel = aPresContext->AppUnitsPerDevPixel();
|
|
nsRect boundRect = ToAppUnits(aRect, appUnitsPerDevPixel);
|
|
boundRect.MoveBy(NSIntPixelsToAppUnits(aOffset.x, appUnitsPerDevPixel),
|
|
NSIntPixelsToAppUnits(aOffset.y, appUnitsPerDevPixel));
|
|
boundRect.ScaleInverseRoundOut(aXScale, aYScale);
|
|
|
|
if (boundRect.IsEmpty()) {
|
|
// Hack! This can happen if the conversion of |aRect| to scaled and offset
|
|
// app units overflowed. Ideally the conversion would detect this and handle
|
|
// such situations gracefully. For now, do nothing.
|
|
return;
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
// Tracks effect nesting level. These are used to track that every effect
|
|
// start marker has a corresponding end marker.
|
|
int opacityLevel = 0;
|
|
int transformLevel = 0;
|
|
#endif
|
|
|
|
// Tracks effect nesting level for skipping items between effect markers,
|
|
// when the effect display item does not intersect with the invalidated area.
|
|
int emptyEffectLevel = 0;
|
|
|
|
// Stores a simplified version of the item clip, if needed.
|
|
DisplayItemClip temporaryClip;
|
|
|
|
// Two types of clips are used during PaintItems(): clips for items and clips
|
|
// for effects. Item clips are always the most recent clip set, and they are
|
|
// never nested. The previous item clip is reused, if the next item has the
|
|
// same clip. Item clips are removed when an effect starts or ends.
|
|
ItemClipTracker itemClipTracker(aContext, appUnitsPerDevPixel);
|
|
|
|
// Since effects can be nested, the effect clips need to be nested as well.
|
|
// They are pushed for effect start marker, and popped for effect end marker.
|
|
// Effect clips are tracked by |effectClipStack|. If there are consecutive
|
|
// effects with the same clip, |effectClipStack| defers popping the clip for
|
|
// the first end marker, and tries to reuse the previously set clip, when
|
|
// processing the start marker for the next effect.
|
|
ClipStack effectClipStack(aContext, appUnitsPerDevPixel);
|
|
|
|
MatrixStack4x4 matrixStack;
|
|
const Matrix4x4Flagged base = Matrix4x4::From2D(aContext->CurrentMatrix());
|
|
|
|
for (uint32_t i = 0; i < aItems.size(); ++i) {
|
|
AssignedDisplayItem& cdi = aItems[i];
|
|
nsDisplayItem* item = cdi.mItem;
|
|
|
|
const auto NextItemStartsEffect = [&]() {
|
|
const uint32_t next = i + 1;
|
|
return next < aItems.size() && IsEffectStartMarker(aItems[next].mType);
|
|
};
|
|
|
|
if (!item) {
|
|
MOZ_ASSERT(cdi.mType == DisplayItemEntryType::Item);
|
|
continue;
|
|
}
|
|
|
|
nsRect visibleRect = item->GetPaintRect();
|
|
|
|
if (matrixStack.HasTransform()) {
|
|
MOZ_ASSERT(transformLevel > 0);
|
|
|
|
if (IsEffectEndMarker(cdi.mType)) {
|
|
// Always process the effect end markers.
|
|
visibleRect = boundRect;
|
|
} else {
|
|
const Matrix4x4Flagged& matrix = matrixStack.CurrentMatrix();
|
|
visibleRect = nsLayoutUtils::MatrixTransformRect(visibleRect, matrix,
|
|
appUnitsPerDevPixel);
|
|
}
|
|
}
|
|
|
|
const nsRect paintRect = visibleRect.Intersect(boundRect);
|
|
|
|
if (paintRect.IsEmpty() || emptyEffectLevel > 0) {
|
|
// In order for this branch to be hit, either this item has an empty paint
|
|
// rect and nothing would be drawn, or an effect marker before this
|
|
// item had an empty paint rect. In the latter case, the items are skipped
|
|
// until effect POP markers bring |emptyEffectLevel| back to 0.
|
|
UpdateEffectTracking(emptyEffectLevel, emptyEffectLevel, cdi.mType);
|
|
|
|
// Sometimes the item that was going to reuse the previous clip is culled.
|
|
// Since |PushClip()| is never called for culled items, pop the clip now.
|
|
effectClipStack.PopDeferredClip();
|
|
continue;
|
|
}
|
|
|
|
#ifdef MOZ_DUMP_PAINTING
|
|
AUTO_PROFILER_LABEL_DYNAMIC_CSTR("FrameLayerBuilder::PaintItems",
|
|
GRAPHICS_Rasterization, item->Name());
|
|
#else
|
|
AUTO_PROFILER_LABEL("FrameLayerBuilder::PaintItems",
|
|
GRAPHICS_Rasterization);
|
|
#endif
|
|
|
|
MOZ_ASSERT((opacityLevel == 0 && !cdi.HasOpacity()) ||
|
|
(opacityLevel > 0 && cdi.HasOpacity()) ||
|
|
(transformLevel == 0 && !cdi.HasTransform()) ||
|
|
(transformLevel > 0 && cdi.HasTransform()));
|
|
|
|
if (cdi.mType != DisplayItemEntryType::Item) {
|
|
// If we are processing an effect marker, remove the current item clip, if
|
|
// there is one.
|
|
itemClipTracker.Restore();
|
|
}
|
|
|
|
if (cdi.mType == DisplayItemEntryType::PushOpacity ||
|
|
cdi.mType == DisplayItemEntryType::PushOpacityWithBg) {
|
|
// To avoid pushing large temporary surfaces, it is important to clip
|
|
// opacity group with both the paint rect and the actual opacity clip.
|
|
DisplayItemClip effectClip;
|
|
effectClip.SetTo(item->GetPaintRect());
|
|
effectClip.IntersectWith(item->GetClip());
|
|
effectClipStack.PushClip(effectClip);
|
|
PushOpacity(aContext, cdi);
|
|
}
|
|
|
|
if (cdi.mType == DisplayItemEntryType::PopOpacity) {
|
|
MOZ_ASSERT(opacityLevel > 0);
|
|
aContext->PopGroupAndBlend();
|
|
}
|
|
|
|
if (cdi.mType == DisplayItemEntryType::PushTransform) {
|
|
effectClipStack.PushClip(item->GetClip());
|
|
aContext->Save();
|
|
PushTransform(aContext, cdi, aBuilder, matrixStack, base);
|
|
}
|
|
|
|
if (cdi.mType == DisplayItemEntryType::PopTransform) {
|
|
MOZ_ASSERT(transformLevel > 0);
|
|
matrixStack.Pop();
|
|
aContext->Restore();
|
|
}
|
|
|
|
if (IsEffectEndMarker(cdi.mType)) {
|
|
// Pop the clip for the effect.
|
|
MOZ_ASSERT(effectClipStack.HasClips());
|
|
|
|
// If the next item starts an effect, defer popping the current clip, and
|
|
// try to reuse it during the next call to |PushClip()|. Trying to reuse
|
|
// clips between nested effects would be difficult, for example due to
|
|
// possibly different coordinate system, so this optimization is limited
|
|
// to consecutive effects.
|
|
effectClipStack.PopClip(NextItemStartsEffect());
|
|
}
|
|
|
|
if (cdi.mType != DisplayItemEntryType::Item) {
|
|
#ifdef DEBUG
|
|
UpdateEffectTracking(opacityLevel, transformLevel, cdi.mType);
|
|
#endif
|
|
// Nothing more to do with effect markers.
|
|
continue;
|
|
}
|
|
|
|
const bool paintAsLayer = cdi.mInactiveLayerData.get();
|
|
nsPaintedDisplayItem* paintedItem = item->AsPaintedDisplayItem();
|
|
MOZ_ASSERT(paintAsLayer || paintedItem,
|
|
"The display item does not support painting");
|
|
|
|
const DisplayItemClip* itemClip = GetItemClip(item, temporaryClip);
|
|
bool itemPaintsOwnClip = false;
|
|
|
|
if (itemClip && !itemClipTracker.HasClip(itemClip)) {
|
|
// The clip has changed. Remove the previous clip.
|
|
itemClipTracker.Restore();
|
|
|
|
// Check if the item supports painting with clip.
|
|
itemPaintsOwnClip =
|
|
paintAsLayer ? false : paintedItem->CanPaintWithClip(*itemClip);
|
|
|
|
if (!itemPaintsOwnClip) {
|
|
// Item does not support painting with clip, set the clip.
|
|
itemClipTracker.ChangeClipIfNeeded(itemClip);
|
|
}
|
|
}
|
|
|
|
if (!itemClip) {
|
|
// Item does not need clipping, remove the clip if there is one.
|
|
itemClipTracker.Restore();
|
|
}
|
|
|
|
if (paintAsLayer) {
|
|
bool saved = aDrawTarget.GetPermitSubpixelAA();
|
|
PaintInactiveLayer(aBuilder, cdi.mInactiveLayerData->mLayerManager, item,
|
|
aContext, aContext);
|
|
aDrawTarget.SetPermitSubpixelAA(saved);
|
|
continue;
|
|
}
|
|
|
|
nsIFrame* frame = item->Frame();
|
|
if (aBuilder->IsPaintingToWindow()) {
|
|
frame->AddStateBits(NS_FRAME_PAINTED_THEBES);
|
|
}
|
|
|
|
#ifdef MOZ_DUMP_PAINTING
|
|
if (gfxEnv::DumpPaintItems()) {
|
|
DebugPaintItem(aDrawTarget, aPresContext, paintedItem, aBuilder);
|
|
continue;
|
|
}
|
|
#endif
|
|
|
|
if (itemPaintsOwnClip) {
|
|
MOZ_ASSERT(itemClip);
|
|
paintedItem->PaintWithClip(aBuilder, aContext, *itemClip);
|
|
} else {
|
|
paintedItem->Paint(aBuilder, aContext);
|
|
}
|
|
}
|
|
|
|
itemClipTracker.Restore();
|
|
|
|
MOZ_ASSERT(opacityLevel == 0);
|
|
MOZ_ASSERT(transformLevel == 0);
|
|
MOZ_ASSERT(emptyEffectLevel == 0);
|
|
}
|
|
|
|
/**
|
|
* Returns true if it is preferred to draw the list of display
|
|
* items separately for each rect in the visible region rather
|
|
* than clipping to a complex region.
|
|
*/
|
|
static bool ShouldDrawRectsSeparately(DrawTarget* aDrawTarget,
|
|
DrawRegionClip aClip) {
|
|
if (!StaticPrefs::layout_paint_rects_separately() ||
|
|
aClip == DrawRegionClip::NONE) {
|
|
return false;
|
|
}
|
|
|
|
return !aDrawTarget->SupportsRegionClipping();
|
|
}
|
|
|
|
static void DrawForcedBackgroundColor(DrawTarget& aDrawTarget,
|
|
const IntRect& aBounds,
|
|
nscolor aBackgroundColor) {
|
|
if (NS_GET_A(aBackgroundColor) > 0) {
|
|
ColorPattern color(ToDeviceColor(aBackgroundColor));
|
|
aDrawTarget.FillRect(Rect(aBounds), color);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* A note on residual transforms:
|
|
*
|
|
* In a transformed subtree we sometimes apply the PaintedLayer's
|
|
* "residual transform" when drawing content into the PaintedLayer.
|
|
* This is a translation by components in the range [-0.5,0.5) provided
|
|
* by the layer system; applying the residual transform followed by the
|
|
* transforms used by layer compositing ensures that the subpixel alignment
|
|
* of the content of the PaintedLayer exactly matches what it would be if
|
|
* we used cairo/Thebes to draw directly to the screen without going through
|
|
* retained layer buffers.
|
|
*
|
|
* The visible and valid regions of the PaintedLayer are computed without
|
|
* knowing the residual transform (because we don't know what the residual
|
|
* transform is going to be until we've built the layer tree!). So we have to
|
|
* consider whether content painted in the range [x, xmost) might be painted
|
|
* outside the visible region we computed for that content. The visible region
|
|
* would be [floor(x), ceil(xmost)). The content would be rendered at
|
|
* [x + r, xmost + r), where -0.5 <= r < 0.5. So some half-rendered pixels could
|
|
* indeed fall outside the computed visible region, which is not a big deal;
|
|
* similar issues already arise when we snap cliprects to nearest pixels.
|
|
* Note that if the rendering of the content is snapped to nearest pixels ---
|
|
* which it often is --- then the content is actually rendered at
|
|
* [snap(x + r), snap(xmost + r)). It turns out that floor(x) <= snap(x + r)
|
|
* and ceil(xmost) >= snap(xmost + r), so the rendering of snapped content
|
|
* always falls within the visible region we computed.
|
|
*/
|
|
|
|
/* static */
|
|
void FrameLayerBuilder::DrawPaintedLayer(PaintedLayer* aLayer,
|
|
gfxContext* aContext,
|
|
const nsIntRegion& aRegionToDraw,
|
|
const nsIntRegion& aDirtyRegion,
|
|
DrawRegionClip aClip,
|
|
const nsIntRegion& aRegionToInvalidate,
|
|
void* aCallbackData) {
|
|
DrawTarget& aDrawTarget = *aContext->GetDrawTarget();
|
|
|
|
AUTO_PROFILER_LABEL("FrameLayerBuilder::DrawPaintedLayer",
|
|
GRAPHICS_Rasterization);
|
|
|
|
nsDisplayListBuilder* builder =
|
|
static_cast<nsDisplayListBuilder*>(aCallbackData);
|
|
|
|
FrameLayerBuilder* layerBuilder = aLayer->Manager()->GetLayerBuilder();
|
|
NS_ASSERTION(layerBuilder, "Unexpectedly null layer builder!");
|
|
|
|
PaintedDisplayItemLayerUserData* userData =
|
|
static_cast<PaintedDisplayItemLayerUserData*>(
|
|
aLayer->GetUserData(&gPaintedDisplayItemLayerUserData));
|
|
NS_ASSERTION(userData, "where did our user data go?");
|
|
if (!userData->mContainerLayerFrame) {
|
|
return;
|
|
}
|
|
|
|
bool shouldDrawRectsSeparately =
|
|
ShouldDrawRectsSeparately(&aDrawTarget, aClip);
|
|
|
|
if (!shouldDrawRectsSeparately) {
|
|
if (aClip == DrawRegionClip::DRAW) {
|
|
gfxUtils::ClipToRegion(aContext, aRegionToDraw);
|
|
}
|
|
|
|
DrawForcedBackgroundColor(aDrawTarget, aRegionToDraw.GetBounds(),
|
|
userData->mForcedBackgroundColor);
|
|
}
|
|
|
|
// make the origin of the context coincide with the origin of the
|
|
// PaintedLayer
|
|
gfxContextMatrixAutoSaveRestore saveMatrix(aContext);
|
|
nsIntPoint offset = GetTranslationForPaintedLayer(aLayer);
|
|
nsPresContext* presContext = userData->mContainerLayerFrame->PresContext();
|
|
|
|
if (!userData->mVisibilityComputedRegion.Contains(aDirtyRegion) &&
|
|
!layerBuilder->GetContainingPaintedLayerData()) {
|
|
// Recompute visibility of items in our PaintedLayer, if required. Note
|
|
// that this recomputes visibility for all descendants of our display
|
|
// items too, so there's no need to do this for the items in inactive
|
|
// PaintedLayers. If aDirtyRegion has not changed since the previous call
|
|
// then we can skip this.
|
|
int32_t appUnitsPerDevPixel = presContext->AppUnitsPerDevPixel();
|
|
RecomputeVisibilityForItems(userData->mItems, builder, aDirtyRegion,
|
|
userData->mPreviousRecomputeVisibilityRect,
|
|
offset, appUnitsPerDevPixel, userData->mXScale,
|
|
userData->mYScale);
|
|
userData->mVisibilityComputedRegion = aDirtyRegion;
|
|
}
|
|
|
|
if (shouldDrawRectsSeparately) {
|
|
for (auto iter = aRegionToDraw.RectIter(); !iter.Done(); iter.Next()) {
|
|
const nsIntRect& iterRect = iter.Get();
|
|
gfxContextAutoSaveRestore save(aContext);
|
|
aContext->NewPath();
|
|
aContext->Rectangle(ThebesRect(iterRect));
|
|
aContext->Clip();
|
|
|
|
DrawForcedBackgroundColor(aDrawTarget, iterRect,
|
|
userData->mForcedBackgroundColor);
|
|
|
|
// Apply the residual transform if it has been enabled, to ensure that
|
|
// snapping when we draw into aContext exactly matches the ideal
|
|
// transform. See above for why this is OK.
|
|
aContext->SetMatrixDouble(
|
|
aContext->CurrentMatrixDouble()
|
|
.PreTranslate(aLayer->GetResidualTranslation() -
|
|
gfxPoint(offset.x, offset.y))
|
|
.PreScale(userData->mXScale, userData->mYScale));
|
|
|
|
layerBuilder->PaintItems(userData->mItems, iterRect, aContext, builder,
|
|
presContext, offset, userData->mXScale,
|
|
userData->mYScale);
|
|
if (StaticPrefs::gfx_logging_painted_pixel_count_enabled()) {
|
|
aLayer->Manager()->AddPaintedPixelCount(iterRect.Area());
|
|
}
|
|
}
|
|
} else {
|
|
// Apply the residual transform if it has been enabled, to ensure that
|
|
// snapping when we draw into aContext exactly matches the ideal transform.
|
|
// See above for why this is OK.
|
|
aContext->SetMatrixDouble(
|
|
aContext->CurrentMatrixDouble()
|
|
.PreTranslate(aLayer->GetResidualTranslation() -
|
|
gfxPoint(offset.x, offset.y))
|
|
.PreScale(userData->mXScale, userData->mYScale));
|
|
|
|
layerBuilder->PaintItems(userData->mItems, aRegionToDraw.GetBounds(),
|
|
aContext, builder, presContext, offset,
|
|
userData->mXScale, userData->mYScale);
|
|
if (StaticPrefs::gfx_logging_painted_pixel_count_enabled()) {
|
|
aLayer->Manager()->AddPaintedPixelCount(aRegionToDraw.GetBounds().Area());
|
|
}
|
|
}
|
|
|
|
bool isActiveLayerManager = !aLayer->Manager()->IsInactiveLayerManager();
|
|
|
|
if (presContext->GetPaintFlashing() && isActiveLayerManager) {
|
|
gfxContextAutoSaveRestore save(aContext);
|
|
if (shouldDrawRectsSeparately) {
|
|
if (aClip == DrawRegionClip::DRAW) {
|
|
gfxUtils::ClipToRegion(aContext, aRegionToDraw);
|
|
}
|
|
}
|
|
FlashPaint(aContext);
|
|
}
|
|
|
|
if (presContext->GetDocShell() && isActiveLayerManager) {
|
|
nsDocShell* docShell = static_cast<nsDocShell*>(presContext->GetDocShell());
|
|
RefPtr<TimelineConsumers> timelines = TimelineConsumers::Get();
|
|
|
|
if (timelines && timelines->HasConsumer(docShell)) {
|
|
timelines->AddMarkerForDocShell(
|
|
docShell, MakeUnique<LayerTimelineMarker>(aRegionToDraw));
|
|
}
|
|
}
|
|
|
|
if (!aRegionToInvalidate.IsEmpty()) {
|
|
aLayer->AddInvalidRect(aRegionToInvalidate.GetBounds());
|
|
}
|
|
}
|
|
|
|
/* static */
|
|
void FrameLayerBuilder::DumpRetainedLayerTree(LayerManager* aManager,
|
|
std::stringstream& aStream,
|
|
bool aDumpHtml) {
|
|
aManager->Dump(aStream, "", aDumpHtml);
|
|
}
|
|
|
|
nsDisplayItemGeometry* FrameLayerBuilder::GetMostRecentGeometry(
|
|
nsDisplayItem* aItem) {
|
|
typedef SmallPointerArray<DisplayItemData> DataArray;
|
|
|
|
// Retrieve the array of DisplayItemData associated with our frame.
|
|
DataArray& dataArray = aItem->Frame()->DisplayItemData();
|
|
|
|
// Find our display item data, if it exists, and return its geometry.
|
|
// We first check for ones with an inactive manager, since items that
|
|
// create inactive layers will create two DisplayItemData entries,
|
|
// and we want the outer one.
|
|
DisplayItemData* firstMatching = nullptr;
|
|
uint32_t itemPerFrameKey = aItem->GetPerFrameKey();
|
|
for (DisplayItemData* data : dataArray) {
|
|
DisplayItemData::AssertDisplayItemData(data);
|
|
if (data->GetDisplayItemKey() == itemPerFrameKey) {
|
|
if (data->InactiveManager()) {
|
|
return data->GetGeometry();
|
|
}
|
|
if (!firstMatching) {
|
|
firstMatching = data;
|
|
}
|
|
}
|
|
}
|
|
if (firstMatching) {
|
|
return firstMatching->GetGeometry();
|
|
}
|
|
if (RefPtr<WebRenderFallbackData> data =
|
|
GetWebRenderUserData<WebRenderFallbackData>(aItem->Frame(),
|
|
itemPerFrameKey)) {
|
|
return data->GetGeometry();
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
static gfx::Rect CalculateBounds(
|
|
const nsTArray<DisplayItemClip::RoundedRect>& aRects,
|
|
int32_t aAppUnitsPerDevPixel) {
|
|
nsRect bounds = aRects[0].mRect;
|
|
for (uint32_t i = 1; i < aRects.Length(); ++i) {
|
|
bounds.UnionRect(bounds, aRects[i].mRect);
|
|
}
|
|
|
|
return gfx::Rect(bounds.ToNearestPixels(aAppUnitsPerDevPixel));
|
|
}
|
|
|
|
void ContainerState::SetupMaskLayer(Layer* aLayer,
|
|
const DisplayItemClip& aClip) {
|
|
// don't build an unnecessary mask
|
|
if (aClip.GetRoundedRectCount() == 0) {
|
|
return;
|
|
}
|
|
|
|
RefPtr<Layer> maskLayer = CreateMaskLayer(aLayer, aClip, Nothing());
|
|
|
|
if (!maskLayer) {
|
|
return;
|
|
}
|
|
|
|
aLayer->SetMaskLayer(maskLayer);
|
|
}
|
|
|
|
static MaskLayerUserData* GetMaskLayerUserData(Layer* aMaskLayer) {
|
|
if (!aMaskLayer) {
|
|
return nullptr;
|
|
}
|
|
|
|
return static_cast<MaskLayerUserData*>(
|
|
aMaskLayer->GetUserData(&gMaskLayerUserData));
|
|
}
|
|
|
|
static void SetMaskLayerUserData(Layer* aMaskLayer) {
|
|
MOZ_ASSERT(aMaskLayer);
|
|
|
|
aMaskLayer->SetUserData(&gMaskLayerUserData, new MaskLayerUserData());
|
|
}
|
|
|
|
already_AddRefed<Layer> ContainerState::CreateMaskLayer(
|
|
Layer* aLayer, const DisplayItemClip& aClip,
|
|
const Maybe<size_t>& aForAncestorMaskLayer) {
|
|
// aLayer will never be the container layer created by an
|
|
// nsDisplayMasksAndClipPaths because nsDisplayMasksAndClipPaths propagates
|
|
// the DisplayItemClip to its contents and is not clipped itself.
|
|
// This assertion will fail if that ever stops being the case.
|
|
MOZ_ASSERT(!aLayer->GetUserData(&gCSSMaskLayerUserData),
|
|
"A layer contains round clips should not have css-mask on it.");
|
|
|
|
// check if we can re-use the mask layer
|
|
RefPtr<ImageLayer> maskLayer = CreateOrRecycleMaskImageLayerFor(
|
|
MaskLayerKey(aLayer, aForAncestorMaskLayer), GetMaskLayerUserData,
|
|
SetMaskLayerUserData);
|
|
MaskLayerUserData* userData = GetMaskLayerUserData(maskLayer.get());
|
|
|
|
int32_t A2D = mContainerFrame->PresContext()->AppUnitsPerDevPixel();
|
|
MaskLayerUserData newData(aClip, A2D, mParameters);
|
|
if (*userData == newData) {
|
|
return maskLayer.forget();
|
|
}
|
|
|
|
gfx::Rect boundingRect =
|
|
CalculateBounds(newData.mRoundedClipRects, newData.mAppUnitsPerDevPixel);
|
|
boundingRect.Scale(mParameters.mXScale, mParameters.mYScale);
|
|
if (boundingRect.IsEmpty()) {
|
|
// Return early if we know that there is effectively no visible data.
|
|
return nullptr;
|
|
}
|
|
|
|
uint32_t maxSize = mManager->GetMaxTextureSize();
|
|
NS_ASSERTION(maxSize > 0, "Invalid max texture size");
|
|
#ifdef MOZ_GFX_OPTIMIZE_MOBILE
|
|
// Make mask image width aligned to 4. See Bug 1245552.
|
|
gfx::Size surfaceSize(
|
|
std::min<gfx::Float>(
|
|
GetAlignedStride<4>(NSToIntCeil(boundingRect.Width()), 1), maxSize),
|
|
std::min<gfx::Float>(boundingRect.Height(), maxSize));
|
|
#else
|
|
gfx::Size surfaceSize(std::min<gfx::Float>(boundingRect.Width(), maxSize),
|
|
std::min<gfx::Float>(boundingRect.Height(), maxSize));
|
|
#endif
|
|
|
|
// maskTransform is applied to the clip when it is painted into the mask (as a
|
|
// component of imageTransform), and its inverse used when the mask is used
|
|
// for masking. It is the transform from the masked layer's space to mask
|
|
// space
|
|
gfx::Matrix maskTransform =
|
|
Matrix::Scaling(surfaceSize.width / boundingRect.Width(),
|
|
surfaceSize.height / boundingRect.Height());
|
|
if (surfaceSize.IsEmpty()) {
|
|
// Return early if we know that the size of this mask surface is empty.
|
|
return nullptr;
|
|
}
|
|
|
|
gfx::Point p = boundingRect.TopLeft();
|
|
maskTransform.PreTranslate(-p.x, -p.y);
|
|
// imageTransform is only used when the clip is painted to the mask
|
|
gfx::Matrix imageTransform = maskTransform;
|
|
imageTransform.PreScale(mParameters.mXScale, mParameters.mYScale);
|
|
|
|
nsAutoPtr<MaskLayerImageCache::MaskLayerImageKey> newKey(
|
|
new MaskLayerImageCache::MaskLayerImageKey());
|
|
|
|
// copy and transform the rounded rects
|
|
for (uint32_t i = 0; i < newData.mRoundedClipRects.Length(); ++i) {
|
|
newKey->mRoundedClipRects.AppendElement(
|
|
MaskLayerImageCache::PixelRoundedRect(newData.mRoundedClipRects[i],
|
|
mContainerFrame->PresContext()));
|
|
newKey->mRoundedClipRects[i].ScaleAndTranslate(imageTransform);
|
|
}
|
|
newKey->mKnowsCompositor = mManager->AsKnowsCompositor();
|
|
|
|
const MaskLayerImageCache::MaskLayerImageKey* lookupKey = newKey;
|
|
|
|
// check to see if we can reuse a mask image
|
|
RefPtr<ImageContainer> container =
|
|
GetMaskLayerImageCache()->FindImageFor(&lookupKey);
|
|
|
|
if (!container) {
|
|
IntSize surfaceSizeInt(NSToIntCeil(surfaceSize.width),
|
|
NSToIntCeil(surfaceSize.height));
|
|
// no existing mask image, so build a new one
|
|
MaskImageData imageData(surfaceSizeInt, mManager);
|
|
RefPtr<DrawTarget> dt = imageData.CreateDrawTarget();
|
|
|
|
// fail if we can't get the right surface
|
|
if (!dt || !dt->IsValid()) {
|
|
NS_WARNING("Could not create DrawTarget for mask layer.");
|
|
return nullptr;
|
|
}
|
|
|
|
RefPtr<gfxContext> context = gfxContext::CreateOrNull(dt);
|
|
MOZ_ASSERT(context); // already checked the draw target above
|
|
context->Multiply(ThebesMatrix(imageTransform));
|
|
|
|
// paint the clipping rects with alpha to create the mask
|
|
aClip.FillIntersectionOfRoundedRectClips(context, Color(1.f, 1.f, 1.f, 1.f),
|
|
newData.mAppUnitsPerDevPixel);
|
|
|
|
// build the image and container
|
|
MOZ_ASSERT(aLayer->Manager() == mManager);
|
|
container = imageData.CreateImageAndImageContainer();
|
|
NS_ASSERTION(container, "Could not create image container for mask layer.");
|
|
|
|
if (!container) {
|
|
return nullptr;
|
|
}
|
|
|
|
GetMaskLayerImageCache()->PutImage(newKey.forget(), container);
|
|
}
|
|
|
|
maskLayer->SetContainer(container);
|
|
|
|
maskTransform.Invert();
|
|
Matrix4x4 matrix = Matrix4x4::From2D(maskTransform);
|
|
matrix.PreTranslate(mParameters.mOffset.x, mParameters.mOffset.y, 0);
|
|
maskLayer->SetBaseTransform(matrix);
|
|
|
|
// save the details of the clip in user data
|
|
*userData = std::move(newData);
|
|
userData->mImageKey.Reset(lookupKey);
|
|
|
|
return maskLayer.forget();
|
|
}
|
|
|
|
} // namespace mozilla
|