mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
ce7cd52628
Displayports only get acted upon when painting to the window, and the async scroll clips only get computed when we use a displayport. In addition we change an assert because if we are painting to the window then our root reference frame is either a root frame, or a popup frame. In either case we should not be able to get to out of flows outside of the frame subtree rooted at the root reference frame by following placeholders.
6172 lines
235 KiB
C++
6172 lines
235 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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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 "mozilla/LookAndFeel.h"
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#include "mozilla/Maybe.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 "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 "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 "nsLayoutUtils.h"
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#include "nsPresContext.h"
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#include "nsPrintfCString.h"
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#include "nsRenderingContext.h"
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#include "nsSVGIntegrationUtils.h"
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#include "mozilla/LayerTimelineMarker.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/unused.h"
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#include "GeckoProfiler.h"
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#include "LayersLogging.h"
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#include "gfxPrefs.h"
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#include <algorithm>
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using namespace mozilla::layers;
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using namespace mozilla::gfx;
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namespace mozilla {
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class PaintedDisplayItemLayerUserData;
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static nsTHashtable<nsPtrHashKey<FrameLayerBuilder::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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FrameLayerBuilder::FrameLayerBuilder()
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: mRetainingManager(nullptr)
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, mDetectedDOMModification(false)
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, mInvalidateAllLayers(false)
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, mInLayerTreeCompressionMode(false)
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, mContainerLayerGeneration(0)
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, mMaxContainerLayerGeneration(0)
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{
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MOZ_COUNT_CTOR(FrameLayerBuilder);
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}
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FrameLayerBuilder::~FrameLayerBuilder()
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{
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MOZ_COUNT_DTOR(FrameLayerBuilder);
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}
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FrameLayerBuilder::DisplayItemData::DisplayItemData(LayerManagerData* aParent, uint32_t aKey,
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Layer* aLayer, nsIFrame* aFrame)
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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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{
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MOZ_COUNT_CTOR(FrameLayerBuilder::DisplayItemData);
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if (!sAliveDisplayItemDatas) {
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sAliveDisplayItemDatas = new nsTHashtable<nsPtrHashKey<FrameLayerBuilder::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
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FrameLayerBuilder::DisplayItemData::AddFrame(nsIFrame* aFrame)
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{
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MOZ_RELEASE_ASSERT(mLayer);
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mFrameList.AppendElement(aFrame);
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nsTArray<DisplayItemData*>* array =
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static_cast<nsTArray<DisplayItemData*>*>(aFrame->Properties().Get(FrameLayerBuilder::LayerManagerDataProperty()));
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if (!array) {
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array = new nsTArray<DisplayItemData*>();
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aFrame->Properties().Set(FrameLayerBuilder::LayerManagerDataProperty(), array);
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}
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array->AppendElement(this);
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}
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void
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FrameLayerBuilder::DisplayItemData::RemoveFrame(nsIFrame* aFrame)
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{
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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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nsTArray<DisplayItemData*>* array =
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static_cast<nsTArray<DisplayItemData*>*>(aFrame->Properties().Get(FrameLayerBuilder::LayerManagerDataProperty()));
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MOZ_RELEASE_ASSERT(array, "Must be already stored on the frame!");
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array->RemoveElement(this);
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}
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void
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FrameLayerBuilder::DisplayItemData::EndUpdate()
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{
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MOZ_RELEASE_ASSERT(mLayer);
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MOZ_ASSERT(!mItem);
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mIsInvalid = false;
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mUsed = false;
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}
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void
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FrameLayerBuilder::DisplayItemData::EndUpdate(nsAutoPtr<nsDisplayItemGeometry> aGeometry)
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{
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MOZ_RELEASE_ASSERT(mLayer);
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MOZ_ASSERT(mItem);
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mGeometry = aGeometry;
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mClip = mItem->GetClip();
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mFrameListChanges.Clear();
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mItem = nullptr;
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EndUpdate();
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}
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void
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FrameLayerBuilder::DisplayItemData::BeginUpdate(Layer* aLayer, LayerState aState,
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uint32_t aContainerLayerGeneration,
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nsDisplayItem* aItem /* = nullptr */)
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{
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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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mContainerLayerGeneration = aContainerLayerGeneration;
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mUsed = true;
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if (aLayer->AsPaintedLayer()) {
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mItem = aItem;
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}
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if (!aItem) {
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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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nsAutoTArray<nsIFrame*, 4> copy(mFrameList);
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if (!copy.RemoveElement(aItem->Frame())) {
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AddFrame(aItem->Frame());
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mFrameListChanges.AppendElement(aItem->Frame());
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}
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nsAutoTArray<nsIFrame*,4> mergedFrames;
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aItem->GetMergedFrames(&mergedFrames);
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for (uint32_t i = 0; i < mergedFrames.Length(); ++i) {
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if (!copy.RemoveElement(mergedFrames[i])) {
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AddFrame(mergedFrames[i]);
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mFrameListChanges.AppendElement(mergedFrames[i]);
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}
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}
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for (uint32_t i = 0; i < copy.Length(); i++) {
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RemoveFrame(copy[i]);
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mFrameListChanges.AppendElement(copy[i]);
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}
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}
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static nsIFrame* sDestroyedFrame = nullptr;
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FrameLayerBuilder::DisplayItemData::~DisplayItemData()
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{
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MOZ_COUNT_DTOR(FrameLayerBuilder::DisplayItemData);
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MOZ_RELEASE_ASSERT(mLayer);
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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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nsTArray<DisplayItemData*> *array =
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reinterpret_cast<nsTArray<DisplayItemData*>*>(frame->Properties().Get(LayerManagerDataProperty()));
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array->RemoveElement(this);
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}
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MOZ_RELEASE_ASSERT(sAliveDisplayItemDatas && sAliveDisplayItemDatas->Contains(this));
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sAliveDisplayItemDatas->RemoveEntry(this);
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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
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FrameLayerBuilder::DisplayItemData::ClearAnimationCompositorState()
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{
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if (mDisplayItemKey != nsDisplayItem::TYPE_TRANSFORM &&
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mDisplayItemKey != nsDisplayItem::TYPE_OPACITY) {
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return;
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}
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for (nsIFrame* frame : mFrameList) {
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nsCSSProperty prop = mDisplayItemKey == nsDisplayItem::TYPE_TRANSFORM ?
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eCSSProperty_transform : eCSSProperty_opacity;
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frame->PresContext()->AnimationManager()->
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ClearIsRunningOnCompositor(frame, prop);
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frame->PresContext()->TransitionManager()->
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ClearIsRunningOnCompositor(frame, prop);
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}
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}
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const nsTArray<nsIFrame*>&
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FrameLayerBuilder::DisplayItemData::GetFrameListChanges()
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{
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return mFrameListChanges;
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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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{
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MOZ_COUNT_CTOR(LayerManagerData);
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}
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~LayerManagerData() {
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MOZ_COUNT_DTOR(LayerManagerData);
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}
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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 iter = mDisplayItems.Iter(); !iter.Done(); iter.Next()) {
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FrameLayerBuilder::DisplayItemData* data = iter.Get()->GetKey();
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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 LAYER_NONE:
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layerState = "LAYER_NONE"; break;
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case LAYER_INACTIVE:
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layerState = "LAYER_INACTIVE"; break;
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case LAYER_ACTIVE:
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layerState = "LAYER_ACTIVE"; break;
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case LAYER_ACTIVE_FORCE:
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layerState = "LAYER_ACTIVE_FORCE"; break;
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case LAYER_ACTIVE_EMPTY:
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layerState = "LAYER_ACTIVE_EMPTY"; break;
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case LAYER_SVG_EFFECTS:
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layerState = "LAYER_SVG_EFFECTS"; break;
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}
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uint32_t mask = (1 << nsDisplayItem::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(static_cast<nsDisplayItem::Type>(data->mDisplayItemKey & mask));
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if ((data->mDisplayItemKey >> nsDisplayItem::TYPE_BITS)) {
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str += nsPrintfCString("(%i)", data->mDisplayItemKey >> nsDisplayItem::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", data->mInactiveManager.get());
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}
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str += "\n";
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printf_stderr("%s", str.get());
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if (data->mInactiveManager) {
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prefix += " ";
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printf_stderr("%sDumping inactive layer info:\n", prefix.get());
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LayerManagerData* lmd = static_cast<LayerManagerData*>
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(data->mInactiveManager->GetUserData(&gLayerManagerUserData));
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lmd->Dump(prefix.get());
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}
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}
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}
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#endif
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/**
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* Tracks which frames have layers associated with them.
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*/
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LayerManager *mLayerManager;
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#ifdef DEBUG_DISPLAY_ITEM_DATA
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LayerManagerData *mParent;
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#endif
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nsTHashtable<nsRefPtrHashKey<FrameLayerBuilder::DisplayItemData> > mDisplayItems;
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bool mInvalidateAllLayers;
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};
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/* static */ void
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FrameLayerBuilder::DestroyDisplayItemDataFor(nsIFrame* aFrame)
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{
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FrameProperties props = aFrame->Properties();
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props.Delete(LayerManagerDataProperty());
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}
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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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{
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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 AssignedDisplayItem
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{
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AssignedDisplayItem(nsDisplayItem* aItem,
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const DisplayItemClip& aClip,
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LayerState aLayerState)
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: mItem(aItem)
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, mClip(aClip)
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, mLayerState(aLayerState)
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{}
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nsDisplayItem* mItem;
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DisplayItemClip mClip;
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LayerState mLayerState;
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};
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/**
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* We keep a stack of these to represent the PaintedLayers that are
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* currently available to have display items added to.
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* We use a stack here because as much as possible we want to
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* assign display items to existing PaintedLayers, and to the lowest
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* PaintedLayer in z-order. This reduces the number of layers and
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* makes it more likely a display item will be rendered to an opaque
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* layer, giving us the best chance of getting subpixel AA.
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*/
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class PaintedLayerData {
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public:
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PaintedLayerData() :
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mAnimatedGeometryRoot(nullptr),
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mFixedPosFrameForLayerData(nullptr),
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mReferenceFrame(nullptr),
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mLayer(nullptr),
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mIsSolidColorInVisibleRegion(false),
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mFontSmoothingBackgroundColor(NS_RGBA(0,0,0,0)),
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mExclusiveToOneItem(false),
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mSingleItemFixedToViewport(false),
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mIsCaret(false),
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mNeedComponentAlpha(false),
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mForceTransparentSurface(false),
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mHideAllLayersBelow(false),
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mOpaqueForAnimatedGeometryRootParent(false),
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mDisableFlattening(false),
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mBackfaceHidden(false),
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mImage(nullptr),
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mCommonClipCount(-1),
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mNewChildLayersIndex(-1)
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{}
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#ifdef MOZ_DUMP_PAINTING
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/**
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* Keep track of important decisions for debugging.
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*/
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nsCString mLog;
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#define FLB_LOG_PAINTED_LAYER_DECISION(pld, ...) \
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if (gfxPrefs::LayersDumpDecision()) { \
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pld->mLog.AppendPrintf("\t\t\t\t"); \
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pld->mLog.AppendPrintf(__VA_ARGS__); \
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}
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#else
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#define FLB_LOG_PAINTED_LAYER_DECISION(...)
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#endif
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|
|
/**
|
|
* Record that an item has been added to the PaintedLayer, so we
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* need to update our regions.
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* @param aVisibleRect the area of the item that's visible
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|
* @param aSolidColor if non-null, the visible area of the item is
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* a constant color given by *aSolidColor
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*/
|
|
void Accumulate(ContainerState* aState,
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nsDisplayItem* aItem,
|
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const nsIntRegion& aClippedOpaqueRegion,
|
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const nsIntRect& aVisibleRect,
|
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const DisplayItemClip& aClip,
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LayerState aLayerState);
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const nsIFrame* GetAnimatedGeometryRoot() { return mAnimatedGeometryRoot; }
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|
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/**
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* Add the given hit regions to the hit regions to the hit retions for this
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* PaintedLayer.
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*/
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void AccumulateEventRegions(ContainerState* aState, nsDisplayLayerEventRegions* aEventRegions);
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|
|
/**
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* If this represents only a nsDisplayImage, and the image type supports being
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* optimized to an ImageLayer, returns true.
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*/
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|
bool CanOptimizeToImageLayer(nsDisplayListBuilder* aBuilder);
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|
|
|
/**
|
|
* If this represents only a nsDisplayImage, and the image type supports being
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|
* optimized to an ImageLayer, returns an ImageContainer for the underlying
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* image if one is available.
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*/
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|
already_AddRefed<ImageContainer> GetContainerForImageLayer(nsDisplayListBuilder* aBuilder);
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|
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bool VisibleAboveRegionIntersects(const nsIntRegion& aRegion) const
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|
{ return !mVisibleAboveRegion.Intersect(aRegion).IsEmpty(); }
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bool VisibleRegionIntersects(const nsIntRegion& aRegion) const
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|
{ return !mVisibleRegion.Intersect(aRegion).IsEmpty(); }
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|
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/**
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* The region of visible content in the layer, relative to the
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* container layer (which is at the snapped top-left of the display
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* list reference frame).
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|
*/
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nsIntRegion mVisibleRegion;
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|
/**
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|
* The region of visible content in the layer that is opaque.
|
|
* Same coordinate system as mVisibleRegion.
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*/
|
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nsIntRegion mOpaqueRegion;
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|
/**
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* The definitely-hit region for this PaintedLayer.
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*/
|
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nsRegion mHitRegion;
|
|
/**
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* The maybe-hit region for this PaintedLayer.
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*/
|
|
nsRegion mMaybeHitRegion;
|
|
/**
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|
* The dispatch-to-content hit region for this PaintedLayer.
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|
*/
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|
nsRegion mDispatchToContentHitRegion;
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|
/**
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|
* The region for this PaintedLayer that is sensitive to events
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|
* 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;
|
|
/**
|
|
* 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.
|
|
*/
|
|
const nsIFrame* mAnimatedGeometryRoot;
|
|
/**
|
|
* See NewLayerEntry::mAnimatedGeometryRootForScrollMetadata.
|
|
*/
|
|
const nsIFrame* mAnimatedGeometryRootForScrollMetadata;
|
|
/**
|
|
* 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* mFixedPosFrameForLayerData;
|
|
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;
|
|
/**
|
|
* The target background color for smoothing fonts that are drawn on top of
|
|
* transparent parts of the layer.
|
|
*/
|
|
nscolor mFontSmoothingBackgroundColor;
|
|
/**
|
|
* True if only one display item can be assigned to this layer.
|
|
*/
|
|
bool mExclusiveToOneItem;
|
|
/**
|
|
* True if the layer contains exactly one item that returned true for
|
|
* ShouldFixToViewport.
|
|
*/
|
|
bool mSingleItemFixedToViewport;
|
|
/**
|
|
* True if the layer contains exactly one item for the caret.
|
|
*/
|
|
bool mIsCaret;
|
|
/**
|
|
* 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 there is content in the layer that must avoid being flattened.
|
|
*/
|
|
bool mDisableFlattening;
|
|
/**
|
|
* 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;
|
|
/**
|
|
* 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.
|
|
*/
|
|
DisplayItemClip mItemClip;
|
|
/**
|
|
* The first mCommonClipCount rounded rectangle clips are identical for
|
|
* all items in the layer.
|
|
* -1 if there are no items in the layer; must be >=0 by the time that this
|
|
* data is popped from the stack.
|
|
*/
|
|
int32_t mCommonClipCount;
|
|
/**
|
|
* Index of this layer in mNewChildLayers.
|
|
*/
|
|
int32_t mNewChildLayersIndex;
|
|
/*
|
|
* Updates mCommonClipCount by checking for rounded rect clips in common
|
|
* between the clip on a new item (aCurrentClip) and the common clips
|
|
* on items already in the layer (the first mCommonClipCount rounded rects
|
|
* in mItemClip).
|
|
*/
|
|
void UpdateCommonClipCount(const DisplayItemClip& aCurrentClip);
|
|
/**
|
|
* The union of all the bounds of the display items in this layer.
|
|
*/
|
|
nsIntRect mBounds;
|
|
/**
|
|
* 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().
|
|
*/
|
|
nsTArray<AssignedDisplayItem> mAssignedDisplayItems;
|
|
|
|
};
|
|
|
|
struct NewLayerEntry {
|
|
NewLayerEntry()
|
|
: mAnimatedGeometryRoot(nullptr)
|
|
, mAnimatedGeometryRootForScrollMetadata(nullptr)
|
|
, mFixedPosFrameForLayerData(nullptr)
|
|
, mLayerContentsVisibleRect(0, 0, -1, -1)
|
|
, mHideAllLayersBelow(false)
|
|
, mOpaqueForAnimatedGeometryRootParent(false)
|
|
, mPropagateComponentAlphaFlattening(true)
|
|
, mUntransformedVisibleRegion(false)
|
|
, mIsCaret(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;
|
|
const nsIFrame* mAnimatedGeometryRoot;
|
|
// For fixed background layers, mAnimatedGeometryRoot is the animated geometry
|
|
// root of the viewport frame it's fixed to, but we need to annotate it with
|
|
// scroll metadata starting from the animated geometry root of the element
|
|
// it's the background of, so that during async scrolling we can correctly
|
|
// transform the fixed layer's clip.
|
|
const nsIFrame* mAnimatedGeometryRootForScrollMetadata;
|
|
const nsIFrame* mFixedPosFrameForLayerData;
|
|
// If non-null, this FrameMetrics is set to the be the first FrameMetrics
|
|
// on the layer.
|
|
UniquePtr<FrameMetrics> mBaseFrameMetrics;
|
|
// 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;
|
|
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 mIsCaret;
|
|
};
|
|
|
|
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,
|
|
const nsIFrame* aAnimatedGeometryRoot);
|
|
~PaintedLayerDataNode();
|
|
|
|
const nsIFrame* AnimatedGeometryRoot() 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(const nsIFrame* 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,
|
|
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 the topmost item in mPaintedLayerDataStack and pop it from the
|
|
* stack.
|
|
*/
|
|
void PopPaintedLayerData();
|
|
/**
|
|
* 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;
|
|
const nsIFrame* mAnimatedGeometryRoot;
|
|
|
|
/**
|
|
* Our contents: a PaintedLayerData stack and our child nodes.
|
|
*/
|
|
nsTArray<PaintedLayerData> 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)
|
|
{}
|
|
|
|
~PaintedLayerDataTree()
|
|
{
|
|
MOZ_ASSERT(!mRoot);
|
|
MOZ_ASSERT(mNodes.Count() == 0);
|
|
}
|
|
|
|
/**
|
|
* 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(const nsIFrame* 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(const nsIFrame* aAnimatedGeometryRoot,
|
|
const nsIntRect& aVisibleRect,
|
|
bool aForceOwnLayer,
|
|
bool aBackfaceidden,
|
|
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.
|
|
*/
|
|
const nsIFrame* GetParentAnimatedGeometryRoot(const nsIFrame* 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(const nsIFrame* aAnimatedGeometryRoot,
|
|
nsIntRect* aOutClip);
|
|
|
|
/**
|
|
* Called by PaintedLayerDataNode when it is finished, so that we can drop
|
|
* our pointers to it.
|
|
*/
|
|
void NodeWasFinished(const nsIFrame* 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(const nsIFrame* 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(const nsIFrame* 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(const nsIFrame* aAnimatedGeometryRoot,
|
|
const nsIFrame** aOutAncestorChild);
|
|
|
|
ContainerState& mContainerState;
|
|
UniquePtr<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<const nsIFrame>, PaintedLayerDataNode*> mNodes;
|
|
};
|
|
|
|
/**
|
|
* 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,
|
|
bool aFlattenToSingleLayer,
|
|
nscolor aBackgroundColor) :
|
|
mBuilder(aBuilder), mManager(aManager),
|
|
mLayerBuilder(aLayerBuilder),
|
|
mContainerFrame(aContainerFrame),
|
|
mContainerLayer(aContainerLayer),
|
|
mContainerBounds(aContainerBounds),
|
|
mParameters(aParameters),
|
|
mPaintedLayerDataTree(*this, aBackgroundColor),
|
|
mFlattenToSingleLayer(aFlattenToSingleLayer)
|
|
{
|
|
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_IF(isAtRoot, mContainerReferenceFrame == mBuilder->RootReferenceFrame());
|
|
mContainerAnimatedGeometryRoot = isAtRoot
|
|
? mContainerReferenceFrame
|
|
: nsLayoutUtils::GetAnimatedGeometryRootFor(aContainerItem, aBuilder);
|
|
MOZ_ASSERT(!mBuilder->IsPaintingToWindow() ||
|
|
nsLayoutUtils::IsAncestorFrameCrossDoc(mBuilder->RootReferenceFrame(),
|
|
mContainerAnimatedGeometryRoot));
|
|
NS_ASSERTION(!aContainerItem || !aContainerItem->ShouldFixToViewport(mBuilder),
|
|
"Container items never return true for ShouldFixToViewport");
|
|
mContainerFixedPosFrame =
|
|
FindFixedPosFrameForLayerData(mContainerAnimatedGeometryRoot, false);
|
|
// 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, LayerManagerData* aData,
|
|
const nsIntRect& aContainerPixelBounds,
|
|
nsDisplayList* aChildItems, bool& aHasComponentAlphaChildren);
|
|
|
|
nscoord GetAppUnitsPerDevPixel() { return mAppUnitsPerDevPixel; }
|
|
|
|
nsIntRect ScaleToNearestPixels(const nsRect& aRect) const
|
|
{
|
|
return aRect.ScaleToNearestPixels(mParameters.mXScale, mParameters.mYScale,
|
|
mAppUnitsPerDevPixel);
|
|
}
|
|
nsIntRegion ScaleRegionToNearestPixels(const nsRegion& aRegion) const
|
|
{
|
|
return aRegion.ScaleToNearestPixels(mParameters.mXScale, mParameters.mYScale,
|
|
mAppUnitsPerDevPixel);
|
|
}
|
|
nsIntRect ScaleToOutsidePixels(const nsRect& aRect, bool aSnap = false) const
|
|
{
|
|
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 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 (aSnap && mSnappingEnabled) {
|
|
return ScaleRegionToNearestPixels(aRegion);
|
|
}
|
|
return aRegion.ScaleToOutsidePixels(mParameters.mXScale, mParameters.mYScale,
|
|
mAppUnitsPerDevPixel);
|
|
}
|
|
|
|
nsIFrame* GetContainerFrame() const { return mContainerFrame; }
|
|
nsDisplayListBuilder* Builder() const { return mBuilder; }
|
|
|
|
/**
|
|
* 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;
|
|
|
|
LayerManager::PaintedLayerCreationHint
|
|
GetLayerCreationHint(const nsIFrame* 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(const nsIFrame* aAnimatedGeometryRoot,
|
|
nsDisplayItem* aItem,
|
|
const nsPoint& aTopLeft);
|
|
/**
|
|
* Recycle aLayer and do any necessary invalidation.
|
|
*/
|
|
PaintedDisplayItemLayerUserData* RecyclePaintedLayer(PaintedLayer* aLayer,
|
|
const nsIFrame* 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,
|
|
const nsIFrame* 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;
|
|
already_AddRefed<ImageLayer> CreateOrRecycleMaskImageLayerFor(const MaskLayerKey& aKey);
|
|
/**
|
|
* 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);
|
|
/**
|
|
* Find the fixed-pos frame, if any, containing (or equal to)
|
|
* aAnimatedGeometryRoot. Only return a fixed-pos frame if its viewport
|
|
* has a displayport.
|
|
* aDisplayItemFixedToViewport is true if the layer contains a single display
|
|
* item which returned true for ShouldFixToViewport.
|
|
* This can return the actual viewport frame for layers whose display items
|
|
* are directly on the viewport (e.g. background-attachment:fixed backgrounds).
|
|
*/
|
|
const nsIFrame* FindFixedPosFrameForLayerData(const nsIFrame* aAnimatedGeometryRoot,
|
|
bool aDisplayItemFixedToViewport);
|
|
/**
|
|
* Set fixed-pos layer metadata on aLayer according to the data for aFixedPosFrame.
|
|
*/
|
|
void SetFixedPositionLayerData(Layer* aLayer,
|
|
const nsIFrame* aFixedPosFrame,
|
|
bool aIsClipFixed);
|
|
|
|
/**
|
|
* 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 FrameMetrics 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,
|
|
const nsIFrame* aAnimatedGeometryRoot,
|
|
const nsIFrame* aFixedPosFrame,
|
|
const DisplayItemClip& aClip,
|
|
nsDisplayList* aList,
|
|
bool* aHideAllLayersBelow,
|
|
bool* aOpaqueForAnimatedGeometryRootParent);
|
|
|
|
/**
|
|
* Return a PaintedLayerData object that is initialized for a layer that
|
|
* aItem will be assigned to.
|
|
* @param aItem The item that is going to be added.
|
|
* @param aVisibleRect The visible rect of the item.
|
|
* @param aAnimatedGeometryRoot The item's animated geometry root.
|
|
* @param aAnimatedGeometryRootForScrollMetadata
|
|
* The animated geometry root to be used as
|
|
* the starting point in SetupScrollMetadata().
|
|
* See NewLayerEntry::mAnimatedGeometryRootForScrollMetadata.
|
|
* @param aTopLeft The offset between aAnimatedGeometryRoot and
|
|
* the reference frame.
|
|
* @param aShouldFixToViewport If true, aAnimatedGeometryRoot is the
|
|
* viewport and we will be adding fixed-pos
|
|
* metadata for this layer because the display
|
|
* item returned true from ShouldFixToViewport.
|
|
*/
|
|
PaintedLayerData NewPaintedLayerData(nsDisplayItem* aItem,
|
|
const nsIntRect& aVisibleRect,
|
|
const nsIFrame* aAnimatedGeometryRoot,
|
|
const nsIFrame* aAnimatedGeometryRootForScrollMetadata,
|
|
const nsPoint& aTopLeft,
|
|
bool aShouldFixToViewport);
|
|
|
|
/* 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.
|
|
* aLayerVisibleRegion is the region that will be set as aLayer's visible region,
|
|
* relative to the container reference frame
|
|
* aRoundedRectClipCount is used when building mask layers for PaintedLayers,
|
|
* SetupMaskLayer will build a mask layer for only the first
|
|
* aRoundedRectClipCount rounded rects in aClip
|
|
*/
|
|
void SetupMaskLayer(Layer *aLayer, const DisplayItemClip& aClip,
|
|
const nsIntRegion& aLayerVisibleRegion,
|
|
uint32_t aRoundedRectClipCount = UINT32_MAX);
|
|
|
|
already_AddRefed<Layer> CreateMaskLayer(
|
|
Layer *aLayer, const DisplayItemClip& aClip,
|
|
const nsIntRegion& aLayerVisibleRegion,
|
|
const Maybe<size_t>& aForAncestorMaskLayer,
|
|
uint32_t aRoundedRectClipCount = UINT32_MAX);
|
|
|
|
bool ChooseAnimatedGeometryRoot(const nsDisplayList& aList,
|
|
const nsIFrame **aAnimatedGeometryRoot);
|
|
|
|
nsDisplayListBuilder* mBuilder;
|
|
LayerManager* mManager;
|
|
FrameLayerBuilder* mLayerBuilder;
|
|
nsIFrame* mContainerFrame;
|
|
nsIFrame* mContainerReferenceFrame;
|
|
const nsIFrame* mContainerAnimatedGeometryRoot;
|
|
const nsIFrame* mContainerFixedPosFrame;
|
|
ContainerLayer* mContainerLayer;
|
|
nsRect mContainerBounds;
|
|
DebugOnly<nsRect> mAccumulatedChildBounds;
|
|
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 nsAutoTArray<NewLayerEntry,1> AutoLayersArray;
|
|
AutoLayersArray mNewChildLayers;
|
|
nsTHashtable<nsRefPtrHashKey<PaintedLayer>> mPaintedLayersAvailableForRecycling;
|
|
nscoord mAppUnitsPerDevPixel;
|
|
bool mSnappingEnabled;
|
|
bool mFlattenToSingleLayer;
|
|
|
|
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;
|
|
};
|
|
|
|
class PaintedDisplayItemLayerUserData : public LayerUserData
|
|
{
|
|
public:
|
|
PaintedDisplayItemLayerUserData() :
|
|
mMaskClipCount(0),
|
|
mForcedBackgroundColor(NS_RGBA(0,0,0,0)),
|
|
mFontSmoothingBackgroundColor(NS_RGBA(0,0,0,0)),
|
|
mXScale(1.f), mYScale(1.f),
|
|
mAppUnitsPerDevPixel(0),
|
|
mTranslation(0, 0),
|
|
mAnimatedGeometryRootPosition(0, 0) {}
|
|
|
|
/**
|
|
* Record the number of clips in the PaintedLayer's mask layer.
|
|
* Should not be reset when the layer is recycled since it is used to track
|
|
* changes in the use of mask layers.
|
|
*/
|
|
uint32_t mMaskClipCount;
|
|
|
|
/**
|
|
* A color that should be painted over the bounds of the layer's visible
|
|
* region before any other content is painted.
|
|
*/
|
|
nscolor mForcedBackgroundColor;
|
|
|
|
/**
|
|
* The target background color for smoothing fonts that are drawn on top of
|
|
* transparent parts of the layer.
|
|
*/
|
|
nscolor mFontSmoothingBackgroundColor;
|
|
|
|
/**
|
|
* 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;
|
|
|
|
// If mIgnoreInvalidationsOutsideRect is set, this contains the bounds of the
|
|
// layer's old visible region, in layer pixels.
|
|
nsIntRect mOldVisibleBounds;
|
|
|
|
// If set, invalidations that fall outside of this rect should not result in
|
|
// calls to layer->InvalidateRegion during DLBI. Instead, the parts outside
|
|
// this rectangle will be invalidated in InvalidateVisibleBoundsChangesForScrolledLayer.
|
|
// See the comment in ComputeAndSetIgnoreInvalidationRect for more information.
|
|
Maybe<nsIntRect> mIgnoreInvalidationsOutsideRect;
|
|
|
|
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;
|
|
};
|
|
|
|
/*
|
|
* User data for layers which will be used as masks.
|
|
*/
|
|
struct MaskLayerUserData : public LayerUserData
|
|
{
|
|
MaskLayerUserData()
|
|
: mScaleX(-1.0f)
|
|
, mScaleY(-1.0f)
|
|
, mAppUnitsPerDevPixel(-1)
|
|
{ }
|
|
|
|
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;
|
|
};
|
|
|
|
/**
|
|
* Helper functions for getting user data and casting it to the correct type.
|
|
* aLayer is the layer where the user data is stored.
|
|
*/
|
|
MaskLayerUserData* GetMaskLayerUserData(Layer* aLayer)
|
|
{
|
|
return static_cast<MaskLayerUserData*>(aLayer->GetUserData(&gMaskLayerUserData));
|
|
}
|
|
|
|
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)
|
|
{
|
|
mDisplayListBuilder = aBuilder;
|
|
mRootPresContext = aBuilder->RootReferenceFrame()->PresContext()->GetRootPresContext();
|
|
if (mRootPresContext) {
|
|
mInitialDOMGeneration = mRootPresContext->GetDOMGeneration();
|
|
}
|
|
mContainingPaintedLayer = aLayerData;
|
|
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();
|
|
}
|
|
|
|
static FrameLayerBuilder::DisplayItemData*
|
|
AssertDisplayItemData(FrameLayerBuilder::DisplayItemData* aData)
|
|
{
|
|
MOZ_RELEASE_ASSERT(aData);
|
|
MOZ_RELEASE_ASSERT(sAliveDisplayItemDatas && sAliveDisplayItemDatas->Contains(aData));
|
|
MOZ_RELEASE_ASSERT(aData->mLayer);
|
|
return aData;
|
|
}
|
|
|
|
FrameLayerBuilder::DisplayItemData*
|
|
FrameLayerBuilder::GetDisplayItemData(nsIFrame* aFrame, uint32_t aKey)
|
|
{
|
|
const nsTArray<DisplayItemData*>* array =
|
|
static_cast<nsTArray<DisplayItemData*>*>(aFrame->Properties().Get(LayerManagerDataProperty()));
|
|
if (array) {
|
|
for (uint32_t i = 0; i < array->Length(); i++) {
|
|
DisplayItemData* item = AssertDisplayItemData(array->ElementAt(i));
|
|
if (item->mDisplayItemKey == aKey &&
|
|
item->mLayer->Manager() == mRetainingManager) {
|
|
return item;
|
|
}
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
nsACString&
|
|
AppendToString(nsACString& s, const nsIntRegion& r,
|
|
const char* pfx="", const char* sfx="")
|
|
{
|
|
s += pfx;
|
|
|
|
nsIntRegionRectIterator it(r);
|
|
s += "< ";
|
|
while (const nsIntRect* sr = it.Next()) {
|
|
AppendToString(s, *sr) += "; ";
|
|
}
|
|
s += ">";
|
|
|
|
return s += sfx;
|
|
}
|
|
|
|
/**
|
|
* 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.
|
|
*/
|
|
template<typename RegionOrRect> void
|
|
InvalidatePostTransformRegion(PaintedLayer* aLayer, const RegionOrRect& aRegion,
|
|
const nsIntPoint& aTranslation,
|
|
PaintedDisplayItemLayerUserData* aData)
|
|
{
|
|
// 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
|
|
RegionOrRect rgn = aRegion;
|
|
rgn.MoveBy(-aTranslation);
|
|
if (aData->mIgnoreInvalidationsOutsideRect) {
|
|
rgn = rgn.Intersect(*aData->mIgnoreInvalidationsOutsideRect);
|
|
}
|
|
if (!rgn.IsEmpty()) {
|
|
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
|
|
InvalidatePostTransformRegion(PaintedLayer* aLayer, const nsRect& aRect,
|
|
const DisplayItemClip& aClip,
|
|
const nsIntPoint& aTranslation)
|
|
{
|
|
PaintedDisplayItemLayerUserData* data =
|
|
static_cast<PaintedDisplayItemLayerUserData*>(aLayer->GetUserData(&gPaintedDisplayItemLayerUserData));
|
|
|
|
nsRect rect = aClip.ApplyNonRoundedIntersection(aRect);
|
|
|
|
nsIntRect pixelRect = rect.ScaleToOutsidePixels(data->mXScale, data->mYScale, data->mAppUnitsPerDevPixel);
|
|
InvalidatePostTransformRegion(aLayer, pixelRect, aTranslation, data);
|
|
}
|
|
|
|
|
|
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(nsIFrame* aFrame,
|
|
void* aPropertyValue)
|
|
{
|
|
MOZ_RELEASE_ASSERT(!sDestroyedFrame);
|
|
sDestroyedFrame = aFrame;
|
|
nsTArray<DisplayItemData*> *array =
|
|
reinterpret_cast<nsTArray<DisplayItemData*>*>(aPropertyValue);
|
|
|
|
// Hold a reference to all the items so that they don't get
|
|
// deleted from under us.
|
|
nsTArray<RefPtr<DisplayItemData> > arrayCopy;
|
|
for (uint32_t i = 0; i < array->Length(); ++i) {
|
|
arrayCopy.AppendElement(array->ElementAt(i));
|
|
}
|
|
|
|
#ifdef DEBUG_DISPLAY_ITEM_DATA
|
|
if (array->Length()) {
|
|
LayerManagerData *rootData = array->ElementAt(0)->mParent;
|
|
while (rootData->mParent) {
|
|
rootData = rootData->mParent;
|
|
}
|
|
printf_stderr("Removing frame %p - dumping display data\n", aFrame);
|
|
rootData->Dump();
|
|
}
|
|
#endif
|
|
|
|
for (uint32_t i = 0; i < array->Length(); ++i) {
|
|
DisplayItemData* data = array->ElementAt(i);
|
|
|
|
PaintedLayer* t = data->mLayer->AsPaintedLayer();
|
|
if (t) {
|
|
PaintedDisplayItemLayerUserData* paintedData =
|
|
static_cast<PaintedDisplayItemLayerUserData*>(t->GetUserData(&gPaintedDisplayItemLayerUserData));
|
|
if (paintedData) {
|
|
nsRegion old = data->mGeometry->ComputeInvalidationRegion();
|
|
nsIntRegion rgn = old.ScaleToOutsidePixels(paintedData->mXScale, paintedData->mYScale, paintedData->mAppUnitsPerDevPixel);
|
|
rgn.MoveBy(-GetTranslationForPaintedLayer(t));
|
|
paintedData->mRegionToInvalidate.Or(paintedData->mRegionToInvalidate, rgn);
|
|
paintedData->mRegionToInvalidate.SimplifyOutward(8);
|
|
}
|
|
}
|
|
|
|
data->mParent->mDisplayItems.RemoveEntry(data);
|
|
}
|
|
|
|
arrayCopy.Clear();
|
|
delete array;
|
|
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::StoreOptimizedLayerForFrame(nsDisplayItem* aItem, Layer* aLayer)
|
|
{
|
|
if (!mRetainingManager) {
|
|
return;
|
|
}
|
|
|
|
DisplayItemData* data = GetDisplayItemDataForManager(aItem, aLayer->Manager());
|
|
NS_ASSERTION(data, "Must have already stored data for this item!");
|
|
data->mOptLayer = aLayer;
|
|
}
|
|
|
|
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.
|
|
for (auto iter = data->mDisplayItems.Iter(); !iter.Done(); iter.Next()) {
|
|
DisplayItemData* data = iter.Get()->GetKey();
|
|
if (!data->mUsed) {
|
|
// This item was visible, but isn't anymore.
|
|
PaintedLayer* t = data->mLayer->AsPaintedLayer();
|
|
if (t && data->mGeometry) {
|
|
#ifdef MOZ_DUMP_PAINTING
|
|
if (nsLayoutUtils::InvalidationDebuggingIsEnabled()) {
|
|
printf_stderr("Invalidating unused display item (%i) belonging to frame %p from layer %p\n", data->mDisplayItemKey, data->mFrameList[0], t);
|
|
}
|
|
#endif
|
|
InvalidatePostTransformRegion(t,
|
|
data->mGeometry->ComputeInvalidationRegion(),
|
|
data->mClip,
|
|
GetLastPaintOffset(t));
|
|
}
|
|
|
|
data->ClearAnimationCompositorState();
|
|
iter.Remove();
|
|
} else {
|
|
ComputeGeometryChangeForItem(data);
|
|
}
|
|
}
|
|
|
|
data->mInvalidateAllLayers = false;
|
|
}
|
|
|
|
/* static */ FrameLayerBuilder::DisplayItemData*
|
|
FrameLayerBuilder::GetDisplayItemDataForManager(nsDisplayItem* aItem,
|
|
LayerManager* aManager)
|
|
{
|
|
const nsTArray<DisplayItemData*>* array =
|
|
static_cast<nsTArray<DisplayItemData*>*>(aItem->Frame()->Properties().Get(LayerManagerDataProperty()));
|
|
if (array) {
|
|
for (uint32_t i = 0; i < array->Length(); i++) {
|
|
DisplayItemData* item = AssertDisplayItemData(array->ElementAt(i));
|
|
if (item->mDisplayItemKey == aItem->GetPerFrameKey() &&
|
|
item->mLayer->Manager() == aManager) {
|
|
return item;
|
|
}
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
bool
|
|
FrameLayerBuilder::HasRetainedDataFor(nsIFrame* aFrame, uint32_t aDisplayItemKey)
|
|
{
|
|
const nsTArray<DisplayItemData*>* array =
|
|
static_cast<nsTArray<DisplayItemData*>*>(aFrame->Properties().Get(LayerManagerDataProperty()));
|
|
if (array) {
|
|
for (uint32_t i = 0; i < array->Length(); i++) {
|
|
if (AssertDisplayItemData(array->ElementAt(i))->mDisplayItemKey == aDisplayItemKey) {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void
|
|
FrameLayerBuilder::IterateRetainedDataFor(nsIFrame* aFrame, DisplayItemDataCallback aCallback)
|
|
{
|
|
const nsTArray<DisplayItemData*>* array =
|
|
static_cast<nsTArray<DisplayItemData*>*>(aFrame->Properties().Get(LayerManagerDataProperty()));
|
|
if (!array) {
|
|
return;
|
|
}
|
|
|
|
for (uint32_t i = 0; i < array->Length(); i++) {
|
|
DisplayItemData* data = AssertDisplayItemData(array->ElementAt(i));
|
|
if (data->mDisplayItemKey != nsDisplayItem::TYPE_ZERO) {
|
|
aCallback(aFrame, data);
|
|
}
|
|
}
|
|
}
|
|
|
|
FrameLayerBuilder::DisplayItemData*
|
|
FrameLayerBuilder::GetOldLayerForFrame(nsIFrame* aFrame, uint32_t aDisplayItemKey)
|
|
{
|
|
// If we need to build a new layer tree, then just refuse to recycle
|
|
// anything.
|
|
if (!mRetainingManager || mInvalidateAllLayers)
|
|
return nullptr;
|
|
|
|
DisplayItemData *data = GetDisplayItemData(aFrame, aDisplayItemKey);
|
|
|
|
if (data && data->mLayer->Manager() == mRetainingManager) {
|
|
return data;
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
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;
|
|
}
|
|
|
|
void
|
|
FrameLayerBuilder::ClearCachedGeometry(nsDisplayItem* aItem)
|
|
{
|
|
uint32_t key = aItem->GetPerFrameKey();
|
|
nsIFrame* frame = aItem->Frame();
|
|
|
|
DisplayItemData* oldData = GetOldLayerForFrame(frame, key);
|
|
if (oldData) {
|
|
oldData->mGeometry = nullptr;
|
|
}
|
|
}
|
|
|
|
/* static */ Layer*
|
|
FrameLayerBuilder::GetDebugOldLayerFor(nsIFrame* aFrame, uint32_t aDisplayItemKey)
|
|
{
|
|
const nsTArray<DisplayItemData*>* array =
|
|
static_cast<nsTArray<DisplayItemData*>*>(aFrame->Properties().Get(LayerManagerDataProperty()));
|
|
|
|
if (!array) {
|
|
return nullptr;
|
|
}
|
|
|
|
for (uint32_t i = 0; i < array->Length(); i++) {
|
|
DisplayItemData *data = AssertDisplayItemData(array->ElementAt(i));
|
|
|
|
if (data->mDisplayItemKey == aDisplayItemKey) {
|
|
return data->mLayer;
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
/* static */ Layer*
|
|
FrameLayerBuilder::GetDebugSingleOldLayerForFrame(nsIFrame* aFrame)
|
|
{
|
|
const nsTArray<DisplayItemData*>* array =
|
|
static_cast<nsTArray<DisplayItemData*>*>(aFrame->Properties().Get(LayerManagerDataProperty()));
|
|
|
|
if (!array) {
|
|
return nullptr;
|
|
}
|
|
|
|
Layer* layer = nullptr;
|
|
for (DisplayItemData* data : *array) {
|
|
AssertDisplayItemData(data);
|
|
if (layer && layer != data->mLayer) {
|
|
// More than one layer assigned, bail.
|
|
return nullptr;
|
|
}
|
|
layer = data->mLayer;
|
|
}
|
|
return layer;
|
|
}
|
|
|
|
already_AddRefed<ColorLayer>
|
|
ContainerState::CreateOrRecycleColorLayer(PaintedLayer *aPainted)
|
|
{
|
|
PaintedDisplayItemLayerUserData* data =
|
|
static_cast<PaintedDisplayItemLayerUserData*>(aPainted->GetUserData(&gPaintedDisplayItemLayerUserData));
|
|
RefPtr<ColorLayer> layer = data->mColorLayer;
|
|
if (layer) {
|
|
layer->SetMaskLayer(nullptr);
|
|
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) {
|
|
layer->SetMaskLayer(nullptr);
|
|
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();
|
|
}
|
|
|
|
already_AddRefed<ImageLayer>
|
|
ContainerState::CreateOrRecycleMaskImageLayerFor(const MaskLayerKey& aKey)
|
|
{
|
|
RefPtr<ImageLayer> result = mRecycledMaskImageLayers.Get(aKey);
|
|
if (result) {
|
|
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;
|
|
result->SetUserData(&gMaskLayerUserData, new MaskLayerUserData());
|
|
result->SetDisallowBigImage(true);
|
|
}
|
|
|
|
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(const nsIFrame* aAnimatedGeometryRoot)
|
|
{
|
|
nsIScrollableFrame* sf = nsLayoutUtils::GetScrollableFrameFor(aAnimatedGeometryRoot);
|
|
if (sf) {
|
|
sf->ResetScrollPositionForLayerPixelAlignment();
|
|
}
|
|
}
|
|
|
|
static void
|
|
InvalidateEntirePaintedLayer(PaintedLayer* aLayer, const nsIFrame* aAnimatedGeometryRoot, const char *aReason)
|
|
{
|
|
#ifdef MOZ_DUMP_PAINTING
|
|
if (nsLayoutUtils::InvalidationDebuggingIsEnabled()) {
|
|
printf_stderr("Invalidating entire layer %p: %s\n", aLayer, aReason);
|
|
}
|
|
#endif
|
|
nsIntRect invalidate = aLayer->GetValidRegion().GetBounds();
|
|
aLayer->InvalidateRegion(invalidate);
|
|
aLayer->SetInvalidRectToVisibleRegion();
|
|
ResetScrollPositionForLayerPixelAlignment(aAnimatedGeometryRoot);
|
|
}
|
|
|
|
LayerManager::PaintedLayerCreationHint
|
|
ContainerState::GetLayerCreationHint(const nsIFrame* aAnimatedGeometryRoot)
|
|
{
|
|
// Check whether the layer will be scrollable. This is used as a hint to
|
|
// influence whether tiled layers are used or not.
|
|
|
|
// Check whether there's any active scroll frame on the animated geometry
|
|
// root chain.
|
|
nsIFrame* fParent;
|
|
for (const nsIFrame* f = aAnimatedGeometryRoot;
|
|
f != mContainerAnimatedGeometryRoot;
|
|
f = nsLayoutUtils::GetAnimatedGeometryRootForFrame(mBuilder, fParent)) {
|
|
fParent = nsLayoutUtils::GetCrossDocParentFrame(f);
|
|
if (!fParent) {
|
|
break;
|
|
}
|
|
nsIScrollableFrame* scrollable = do_QueryFrame(fParent);
|
|
if (scrollable
|
|
#ifdef MOZ_B2G
|
|
&& scrollable->WantAsyncScroll()
|
|
#endif
|
|
) {
|
|
// WantAsyncScroll() returns false when the frame has overflow:hidden,
|
|
// so we won't create tiled layers for overflow:hidden frames even if
|
|
// they have a display port. The main purpose of the WantAsyncScroll check
|
|
// is to allow the B2G camera app to use hardware composer for compositing.
|
|
return LayerManager::SCROLLABLE;
|
|
}
|
|
}
|
|
return LayerManager::NONE;
|
|
}
|
|
|
|
already_AddRefed<PaintedLayer>
|
|
ContainerState::AttemptToRecyclePaintedLayer(const nsIFrame* aAnimatedGeometryRoot,
|
|
nsDisplayItem* aItem,
|
|
const nsPoint& aTopLeft)
|
|
{
|
|
Layer* oldLayer = mLayerBuilder->GetOldLayerFor(aItem);
|
|
if (!oldLayer || !oldLayer->AsPaintedLayer() ||
|
|
!mPaintedLayersAvailableForRecycling.Contains(oldLayer->AsPaintedLayer())) {
|
|
return nullptr;
|
|
}
|
|
|
|
// Try to recycle a layer
|
|
RefPtr<PaintedLayer> layer = oldLayer->AsPaintedLayer();
|
|
mPaintedLayersAvailableForRecycling.RemoveEntry(layer);
|
|
|
|
// 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, aItem->ReferenceFrame(),
|
|
aTopLeft,
|
|
didResetScrollPositionForLayerPixelAlignment);
|
|
|
|
return layer.forget();
|
|
}
|
|
|
|
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
|
|
PaintedDisplayItemLayerUserData* userData = new PaintedDisplayItemLayerUserData();
|
|
layer->SetUserData(&gPaintedDisplayItemLayerUserData, userData);
|
|
ResetScrollPositionForLayerPixelAlignment(aData->mAnimatedGeometryRoot);
|
|
|
|
PreparePaintedLayerForUse(layer, userData, aData->mAnimatedGeometryRoot,
|
|
aData->mReferenceFrame,
|
|
aData->mAnimatedGeometryRootOffset, true);
|
|
|
|
return layer.forget();
|
|
}
|
|
|
|
PaintedDisplayItemLayerUserData*
|
|
ContainerState::RecyclePaintedLayer(PaintedLayer* aLayer,
|
|
const nsIFrame* aAnimatedGeometryRoot,
|
|
bool& didResetScrollPositionForLayerPixelAlignment)
|
|
{
|
|
// Clear clip rect and mask layer so we don't accidentally stay clipped.
|
|
// We will reapply any necessary clipping.
|
|
aLayer->SetMaskLayer(nullptr);
|
|
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;
|
|
}
|
|
|
|
static void
|
|
ComputeAndSetIgnoreInvalidationRect(PaintedLayer* aLayer,
|
|
PaintedDisplayItemLayerUserData* aData,
|
|
const nsIFrame* aAnimatedGeometryRoot,
|
|
nsDisplayListBuilder* aBuilder,
|
|
const nsIntPoint& aLayerTranslation)
|
|
{
|
|
if (!aLayer->Manager()->IsWidgetLayerManager()) {
|
|
// This optimization is only useful for layers with retained content.
|
|
return;
|
|
}
|
|
|
|
const nsIFrame* parentFrame = aAnimatedGeometryRoot->GetParent();
|
|
|
|
// GetDirtyRectForScrolledContents will return an empty rect if parentFrame
|
|
// is not a scrollable frame.
|
|
nsRect dirtyRect = aBuilder->GetDirtyRectForScrolledContents(parentFrame);
|
|
|
|
if (dirtyRect.IsEmpty()) {
|
|
// parentFrame is not a scrollable frame, or we didn't encounter it during
|
|
// display list building (though this shouldn't happen), or it's empty.
|
|
// In all those cases this optimization is not needed.
|
|
return;
|
|
}
|
|
|
|
// parentFrame is a scrollable frame, and aLayer contains the scrolled
|
|
// contents of that frame.
|
|
|
|
// maxNewVisibleBounds is a conservative approximation of the new visible
|
|
// region of aLayer.
|
|
nsIntRect maxNewVisibleBounds =
|
|
dirtyRect.ScaleToOutsidePixels(aData->mXScale, aData->mYScale,
|
|
aData->mAppUnitsPerDevPixel) - aLayerTranslation;
|
|
aData->mOldVisibleBounds = aLayer->GetVisibleRegion().GetBounds();
|
|
|
|
// When the visible region of aLayer changes (e.g. due to scrolling),
|
|
// three distinct types of invalidations need to be triggered:
|
|
// (1) Items (or parts of items) that have left the visible region need
|
|
// to be invalidated so that the pixels they painted are no longer
|
|
// part of the layer's valid region.
|
|
// (2) Items (or parts of items) that weren't in the old visible region
|
|
// but are in the new visible region need to be invalidated. This
|
|
// invalidation isn't required for painting the right layer
|
|
// contents, because these items weren't part of the layer's valid
|
|
// region, so they'd be painted anyway. It is, however, necessary in
|
|
// order to get an accurate invalid region for the layer tree that
|
|
// aLayer is in, for example for partial compositing.
|
|
// (3) Any changes that happened in the intersection of the old and the
|
|
// new visible region need to be invalidated. There shouldn't be any
|
|
// of these when scrolling static content.
|
|
//
|
|
// We'd like to guarantee that we won't invalidate anything in the
|
|
// intersection area of the old and the new visible region if all
|
|
// invalidation are of type (1) and (2). However, if we just call
|
|
// aLayer->InvalidateRegion for the invalidations of type (1) and (2),
|
|
// at some point we'll hit the complexity limit of the layer's invalid
|
|
// region. And the resulting region simplification can cause the region
|
|
// to intersect with the intersection of the old and the new visible
|
|
// region.
|
|
// In order to get around this problem, we're using the following approach:
|
|
// - aData->mIgnoreInvalidationsOutsideRect is set to a conservative
|
|
// approximation of the intersection of the old and the new visible
|
|
// region. At this point we don't know the layer's new visible region.
|
|
// - As long as we don't know the layer's new visible region, we ignore all
|
|
// invalidations outside that rectangle, so roughly some of the
|
|
// invalidations of type (1) and (2).
|
|
// - Once we know the layer's new visible region, which happens at some
|
|
// point during PostprocessRetainedLayers, we invalidate a conservative
|
|
// approximation of (1) and (2). Specifically, we invalidate the region
|
|
// union of the old visible bounds and the new visible bounds, minus
|
|
// aData->mIgnoreInvalidationsOutsideRect. That region is simple enough
|
|
// that it will never be simplified on its own.
|
|
// We unset mIgnoreInvalidationsOutsideRect at this point.
|
|
// - Any other invalidations that happen on the layer after this point, e.g.
|
|
// during WillEndTransaction, will just happen regularly. If they are of
|
|
// type (1) or (2), they won't change the layer's invalid region because
|
|
// they fall inside the region we invalidated in the previous step.
|
|
// Consequently, aData->mIgnoreInvalidationsOutsideRect is safe from
|
|
// invalidations as long as there are no invalidations of type (3).
|
|
aData->mIgnoreInvalidationsOutsideRect =
|
|
Some(maxNewVisibleBounds.Intersect(aData->mOldVisibleBounds));
|
|
}
|
|
|
|
void
|
|
ContainerState::PreparePaintedLayerForUse(PaintedLayer* aLayer,
|
|
PaintedDisplayItemLayerUserData* aData,
|
|
const nsIFrame* 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());
|
|
|
|
mLayerBuilder->SavePreviousDataForLayer(aLayer, aData->mMaskClipCount);
|
|
|
|
// 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));
|
|
|
|
ComputeAndSetIgnoreInvalidationRect(aLayer, aData, aAnimatedGeometryRoot, mBuilder, pixOffset);
|
|
|
|
aData->mVisibilityComputedRegion.SetEmpty();
|
|
|
|
// FIXME: Temporary workaround for bug 681192 and bug 724786.
|
|
#ifndef MOZ_WIDGET_ANDROID
|
|
// 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;
|
|
// 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() == nsDisplayItem::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(-float(INT32_MAX) / 2, -float(INT32_MAX) / 2,
|
|
float(INT32_MAX), float(INT32_MAX));
|
|
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);
|
|
}
|
|
gfxRect layerVisible = ThebesRect(transform.ProjectRectBounds(outerVisible, layerContentsVisible));
|
|
layerVisible.RoundOut();
|
|
nsIntRect visRect;
|
|
if (gfxUtils::GfxRectToIntRect(layerVisible, &visRect)) {
|
|
*aOuterVisibleRegion = visRect;
|
|
} else {
|
|
aOuterVisibleRegion->SetEmpty();
|
|
}
|
|
}
|
|
|
|
aLayer->SetVisibleRegion(*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)) {
|
|
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 (assignedItem.mClip.IsRectAffectedByClip(deviceRect,
|
|
mParameters.mXScale,
|
|
mParameters.mYScale,
|
|
mAppUnitsPerDevPixel)) {
|
|
return NS_RGBA(0,0,0,0);
|
|
}
|
|
|
|
nscolor color;
|
|
if (item->IsUniform(mBuilder, &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();
|
|
}
|
|
|
|
void
|
|
PaintedLayerData::UpdateCommonClipCount(
|
|
const DisplayItemClip& aCurrentClip)
|
|
{
|
|
if (mCommonClipCount >= 0) {
|
|
mCommonClipCount = mItemClip.GetCommonRoundedRectCount(aCurrentClip, mCommonClipCount);
|
|
} else {
|
|
// first item in the layer
|
|
mCommonClipCount = aCurrentClip.GetRoundedRectCount();
|
|
}
|
|
}
|
|
|
|
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,
|
|
const nsIFrame* 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(const nsIFrame* aAnimatedGeometryRoot)
|
|
{
|
|
MOZ_ASSERT(mTree.GetParentAnimatedGeometryRoot(aAnimatedGeometryRoot) == mAnimatedGeometryRoot);
|
|
UniquePtr<PaintedLayerDataNode> child =
|
|
MakeUnique<PaintedLayerDataNode>(mTree, this, aAnimatedGeometryRoot);
|
|
mChildren.AppendElement(Move(child));
|
|
return mChildren.LastElement().get();
|
|
}
|
|
|
|
template<typename NewPaintedLayerCallbackType>
|
|
PaintedLayerData*
|
|
PaintedLayerDataNode::FindPaintedLayerFor(const nsIntRect& aVisibleRect,
|
|
bool aBackfaceHidden,
|
|
NewPaintedLayerCallbackType aNewPaintedLayerCallback)
|
|
{
|
|
if (!mPaintedLayerDataStack.IsEmpty()) {
|
|
if (mPaintedLayerDataStack[0].mExclusiveToOneItem) {
|
|
MOZ_ASSERT(mPaintedLayerDataStack.Length() == 1);
|
|
SetAllDrawingAbove();
|
|
MOZ_ASSERT(mPaintedLayerDataStack.IsEmpty());
|
|
} else {
|
|
PaintedLayerData* lowestUsableLayer = nullptr;
|
|
for (auto& data : Reversed(mPaintedLayerDataStack)) {
|
|
if (data.mVisibleAboveRegion.Intersects(aVisibleRect)) {
|
|
break;
|
|
}
|
|
MOZ_ASSERT(!data.mExclusiveToOneItem);
|
|
if (data.mBackfaceHidden == aBackfaceHidden) {
|
|
lowestUsableLayer = &data;
|
|
}
|
|
nsIntRegion visibleRegion = data.mVisibleRegion;
|
|
// 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 (visibleRegion.Intersects(aVisibleRect)) {
|
|
break;
|
|
}
|
|
}
|
|
if (lowestUsableLayer) {
|
|
return lowestUsableLayer;
|
|
}
|
|
}
|
|
}
|
|
return mPaintedLayerDataStack.AppendElement(aNewPaintedLayerCallback());
|
|
}
|
|
|
|
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::PopPaintedLayerData()
|
|
{
|
|
MOZ_ASSERT(!mPaintedLayerDataStack.IsEmpty());
|
|
size_t lastIndex = mPaintedLayerDataStack.Length() - 1;
|
|
PaintedLayerData& data = mPaintedLayerDataStack[lastIndex];
|
|
mTree.ContState().FinishPaintedLayerData(data, [this, &data, lastIndex]() {
|
|
return this->FindOpaqueBackgroundColor(data.mVisibleRegion, lastIndex);
|
|
});
|
|
mPaintedLayerDataStack.RemoveElementAt(lastIndex);
|
|
}
|
|
|
|
void
|
|
PaintedLayerDataNode::PopAllPaintedLayerData()
|
|
{
|
|
while (!mPaintedLayerDataStack.IsEmpty()) {
|
|
PopPaintedLayerData();
|
|
}
|
|
}
|
|
|
|
nsDisplayListBuilder*
|
|
PaintedLayerDataTree::Builder() const
|
|
{
|
|
return mContainerState.Builder();
|
|
}
|
|
|
|
const nsIFrame*
|
|
PaintedLayerDataTree::GetParentAnimatedGeometryRoot(const nsIFrame* aAnimatedGeometryRoot)
|
|
{
|
|
MOZ_ASSERT(aAnimatedGeometryRoot);
|
|
MOZ_ASSERT(nsLayoutUtils::IsAncestorFrameCrossDoc(Builder()->RootReferenceFrame(), aAnimatedGeometryRoot));
|
|
|
|
if (aAnimatedGeometryRoot == Builder()->RootReferenceFrame()) {
|
|
return nullptr;
|
|
}
|
|
|
|
nsIFrame* agr = Builder()->FindAnimatedGeometryRootFor(
|
|
const_cast<nsIFrame*>(aAnimatedGeometryRoot));
|
|
MOZ_ASSERT_IF(agr, nsLayoutUtils::IsAncestorFrameCrossDoc(Builder()->RootReferenceFrame(), agr));
|
|
if (agr != aAnimatedGeometryRoot) {
|
|
return agr;
|
|
}
|
|
// aAnimatedGeometryRoot is its own animated geometry root.
|
|
// Find the animated geometry root for its cross-doc parent frame.
|
|
nsIFrame* parent = nsLayoutUtils::GetCrossDocParentFrame(aAnimatedGeometryRoot);
|
|
if (!parent) {
|
|
return nullptr;
|
|
}
|
|
return Builder()->FindAnimatedGeometryRootFor(parent);
|
|
}
|
|
|
|
void
|
|
PaintedLayerDataTree::Finish()
|
|
{
|
|
if (mRoot) {
|
|
mRoot->Finish(false);
|
|
}
|
|
MOZ_ASSERT(mNodes.Count() == 0);
|
|
mRoot = nullptr;
|
|
}
|
|
|
|
void
|
|
PaintedLayerDataTree::NodeWasFinished(const nsIFrame* aAnimatedGeometryRoot)
|
|
{
|
|
mNodes.Remove(aAnimatedGeometryRoot);
|
|
}
|
|
|
|
void
|
|
PaintedLayerDataTree::AddingOwnLayer(const nsIFrame* aAnimatedGeometryRoot,
|
|
const nsIntRect* aRect,
|
|
nscolor* aOutUniformBackgroundColor)
|
|
{
|
|
FinishPotentiallyIntersectingNodes(aAnimatedGeometryRoot, aRect);
|
|
PaintedLayerDataNode* 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(const nsIFrame* aAnimatedGeometryRoot,
|
|
const nsIntRect& aVisibleRect,
|
|
bool aForceOwnLayer,
|
|
bool aBackfaceHidden,
|
|
NewPaintedLayerCallbackType aNewPaintedLayerCallback)
|
|
{
|
|
const nsIntRect* bounds = aForceOwnLayer ? nullptr : &aVisibleRect;
|
|
FinishPotentiallyIntersectingNodes(aAnimatedGeometryRoot, bounds);
|
|
PaintedLayerDataNode* node = EnsureNodeFor(aAnimatedGeometryRoot);
|
|
if (aForceOwnLayer) {
|
|
node->SetAllDrawingAbove();
|
|
}
|
|
PaintedLayerData* data =
|
|
node->FindPaintedLayerFor(aVisibleRect, aBackfaceHidden,
|
|
aNewPaintedLayerCallback);
|
|
data->mExclusiveToOneItem = aForceOwnLayer;
|
|
return data;
|
|
}
|
|
|
|
void
|
|
PaintedLayerDataTree::FinishPotentiallyIntersectingNodes(const nsIFrame* aAnimatedGeometryRoot,
|
|
const nsIntRect* aRect)
|
|
{
|
|
const nsIFrame* 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->AnimatedGeometryRoot() == 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(GetParentAnimatedGeometryRoot(ancestorThatIsChildOfCommonAncestor) == ancestorNode->AnimatedGeometryRoot());
|
|
|
|
// 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(const nsIFrame* aAnimatedGeometryRoot)
|
|
{
|
|
MOZ_ASSERT(aAnimatedGeometryRoot);
|
|
PaintedLayerDataNode* node = mNodes.Get(aAnimatedGeometryRoot);
|
|
if (node) {
|
|
return node;
|
|
}
|
|
|
|
const nsIFrame* parentAnimatedGeometryRoot = GetParentAnimatedGeometryRoot(aAnimatedGeometryRoot);
|
|
if (!parentAnimatedGeometryRoot) {
|
|
MOZ_ASSERT(!mRoot);
|
|
MOZ_ASSERT(aAnimatedGeometryRoot == Builder()->RootReferenceFrame());
|
|
mRoot = MakeUnique<PaintedLayerDataNode>(*this, nullptr, aAnimatedGeometryRoot);
|
|
node = mRoot.get();
|
|
} else {
|
|
PaintedLayerDataNode* parentNode = EnsureNodeFor(parentAnimatedGeometryRoot);
|
|
MOZ_ASSERT(parentNode);
|
|
node = parentNode->AddChildNodeFor(aAnimatedGeometryRoot);
|
|
}
|
|
MOZ_ASSERT(node);
|
|
mNodes.Put(aAnimatedGeometryRoot, node);
|
|
return node;
|
|
}
|
|
|
|
bool
|
|
PaintedLayerDataTree::IsClippedWithRespectToParentAnimatedGeometryRoot(const nsIFrame* aAnimatedGeometryRoot,
|
|
nsIntRect* aOutClip)
|
|
{
|
|
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(const nsIFrame* aAnimatedGeometryRoot,
|
|
const nsIFrame** aOutAncestorChild)
|
|
{
|
|
if (!aAnimatedGeometryRoot) {
|
|
return nullptr;
|
|
}
|
|
PaintedLayerDataNode* node = mNodes.Get(aAnimatedGeometryRoot);
|
|
if (node) {
|
|
return node;
|
|
}
|
|
*aOutAncestorChild = aAnimatedGeometryRoot;
|
|
return FindNodeForAncestorAnimatedGeometryRoot(
|
|
GetParentAnimatedGeometryRoot(aAnimatedGeometryRoot), aOutAncestorChild);
|
|
}
|
|
|
|
const nsIFrame*
|
|
ContainerState::FindFixedPosFrameForLayerData(const nsIFrame* aAnimatedGeometryRoot,
|
|
bool aDisplayItemFixedToViewport)
|
|
{
|
|
if (!mManager->IsWidgetLayerManager()) {
|
|
// Never attach any fixed-pos metadata to inactive layers, it's pointless!
|
|
return nullptr;
|
|
}
|
|
|
|
nsPresContext* presContext = mContainerFrame->PresContext();
|
|
nsIFrame* viewport = presContext->PresShell()->GetRootFrame();
|
|
|
|
if (viewport == aAnimatedGeometryRoot && aDisplayItemFixedToViewport &&
|
|
nsLayoutUtils::ViewportHasDisplayPort(presContext)) {
|
|
// Probably a background-attachment:fixed item
|
|
return viewport;
|
|
}
|
|
// Viewports with no fixed-pos frames are not relevant.
|
|
if (!viewport->GetFirstChild(nsIFrame::kFixedList)) {
|
|
return nullptr;
|
|
}
|
|
for (const nsIFrame* f = aAnimatedGeometryRoot; f; f = f->GetParent()) {
|
|
if (nsLayoutUtils::IsFixedPosFrameInDisplayPort(f)) {
|
|
return f;
|
|
}
|
|
if (f == mContainerReferenceFrame) {
|
|
// The metadata will go on an ancestor layer if necessary.
|
|
return nullptr;
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
void
|
|
ContainerState::SetFixedPositionLayerData(Layer* aLayer,
|
|
const nsIFrame* aFixedPosFrame,
|
|
bool aIsClipFixed)
|
|
{
|
|
aLayer->SetIsFixedPosition(aFixedPosFrame != nullptr);
|
|
if (!aFixedPosFrame) {
|
|
return;
|
|
}
|
|
|
|
nsPresContext* presContext = aFixedPosFrame->PresContext();
|
|
|
|
const nsIFrame* viewportFrame = aFixedPosFrame->GetParent();
|
|
// anchorRect will be in the container's coordinate system (aLayer's parent layer).
|
|
// This is the same as the display items' reference frame.
|
|
nsRect anchorRect;
|
|
if (viewportFrame) {
|
|
// Fixed position frames are reflowed into the scroll-port size if one has
|
|
// been set.
|
|
if (presContext->PresShell()->IsScrollPositionClampingScrollPortSizeSet()) {
|
|
anchorRect.SizeTo(presContext->PresShell()->GetScrollPositionClampingScrollPortSize());
|
|
} else {
|
|
anchorRect.SizeTo(viewportFrame->GetSize());
|
|
}
|
|
} else {
|
|
// A display item directly attached to the viewport.
|
|
// For background-attachment:fixed items, the anchor point is always the
|
|
// top-left of the viewport currently.
|
|
viewportFrame = aFixedPosFrame;
|
|
}
|
|
// The anchorRect top-left is always the viewport top-left.
|
|
anchorRect.MoveTo(viewportFrame->GetOffsetToCrossDoc(mContainerReferenceFrame));
|
|
|
|
nsLayoutUtils::SetFixedPositionLayerData(aLayer,
|
|
viewportFrame, anchorRect, aFixedPosFrame, presContext, mParameters,
|
|
aIsClipFixed);
|
|
}
|
|
|
|
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());
|
|
}
|
|
|
|
mLayerBuilder->StoreOptimizedLayerForFrame(aData->mImage, imageLayer);
|
|
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();
|
|
}
|
|
|
|
for (auto& item : data->mAssignedDisplayItems) {
|
|
MOZ_ASSERT(item.mItem->GetType() != nsDisplayItem::TYPE_LAYER_EVENT_REGIONS);
|
|
|
|
InvalidateForLayerChange(item.mItem, data->mLayer);
|
|
mLayerBuilder->AddPaintedDisplayItem(data, item.mItem, item.mClip,
|
|
*this, item.mLayerState,
|
|
data->mAnimatedGeometryRootOffset);
|
|
}
|
|
|
|
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 = &mNewChildLayers[data->mNewChildLayersIndex + 1];
|
|
NS_ASSERTION(!newLayerEntry->mLayer, "Slot already occupied?");
|
|
newLayerEntry->mLayer = layer;
|
|
newLayerEntry->mAnimatedGeometryRoot = data->mAnimatedGeometryRoot;
|
|
newLayerEntry->mAnimatedGeometryRootForScrollMetadata = data->mAnimatedGeometryRootForScrollMetadata;
|
|
newLayerEntry->mFixedPosFrameForLayerData = data->mFixedPosFrameForLayerData;
|
|
newLayerEntry->mIsCaret = data->mIsCaret;
|
|
|
|
// 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(nsIntRegion());
|
|
data->mLayer->InvalidateRegion(data->mLayer->GetValidRegion().GetBounds());
|
|
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());
|
|
}
|
|
|
|
if (mLayerBuilder->IsBuildingRetainedLayers()) {
|
|
newLayerEntry->mVisibleRegion = data->mVisibleRegion;
|
|
newLayerEntry->mOpaqueRegion = data->mOpaqueRegion;
|
|
newLayerEntry->mHideAllLayersBelow = data->mHideAllLayersBelow;
|
|
newLayerEntry->mOpaqueForAnimatedGeometryRootParent = data->mOpaqueForAnimatedGeometryRootParent;
|
|
} else {
|
|
SetOuterVisibleRegionForLayer(layer, data->mVisibleRegion);
|
|
}
|
|
|
|
nsIntRect layerBounds = data->mBounds;
|
|
layerBounds.MoveBy(-GetTranslationForPaintedLayer(data->mLayer));
|
|
layer->SetLayerBounds(layerBounds);
|
|
|
|
#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
|
|
|
|
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
|
|
PaintedDisplayItemLayerUserData* userData =
|
|
GetPaintedDisplayItemLayerUserData(data->mLayer);
|
|
NS_ASSERTION(userData, "where did our user data go?");
|
|
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->InvalidateRegion(data->mLayer->GetValidRegion());
|
|
}
|
|
userData->mForcedBackgroundColor = backgroundColor;
|
|
|
|
userData->mFontSmoothingBackgroundColor = data->mFontSmoothingBackgroundColor;
|
|
|
|
// use a mask layer for rounded rect clipping.
|
|
// data->mCommonClipCount may be -1 if we haven't put any actual
|
|
// drawable items in this layer (i.e. it's only catching events).
|
|
int32_t commonClipCount;
|
|
// If the layer contains a single item fixed to the viewport, we removed
|
|
// its clip in ProcessDisplayItems() and saved it to set on the layer instead.
|
|
// Set the clip on the layer now.
|
|
if (data->mSingleItemFixedToViewport && data->mItemClip.HasClip()) {
|
|
nsIntRect layerClipRect = ScaleToNearestPixels(data->mItemClip.GetClipRect());
|
|
layerClipRect.MoveBy(mParameters.mOffset);
|
|
data->mLayer->SetClipRect(Some(ViewAs<ParentLayerPixel>(layerClipRect)));
|
|
// There is only one item, so all of the clips are in common to all items.
|
|
// data->mCommonClipCount will be zero because we removed the clip from
|
|
// the display item. (It could also be -1 if we're inside an inactive
|
|
// layer tree in which we don't call UpdateCommonClipCount() at all.)
|
|
MOZ_ASSERT(data->mCommonClipCount == -1 || data->mCommonClipCount == 0);
|
|
commonClipCount = data->mItemClip.GetRoundedRectCount();
|
|
} else {
|
|
commonClipCount = std::max(0, data->mCommonClipCount);
|
|
}
|
|
SetupMaskLayer(layer, data->mItemClip, data->mVisibleRegion, commonClipCount);
|
|
// copy commonClipCount to the entry
|
|
FrameLayerBuilder::PaintedLayerItemsEntry* entry = mLayerBuilder->
|
|
GetPaintedLayerItemsEntry(static_cast<PaintedLayer*>(layer.get()));
|
|
entry->mCommonClipCount = commonClipCount;
|
|
} else {
|
|
// mask layer for image and color layers
|
|
SetupMaskLayer(layer, data->mItemClip, data->mVisibleRegion);
|
|
}
|
|
|
|
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;
|
|
}
|
|
if (data->mDisableFlattening) {
|
|
flags |= Layer::CONTENT_DISABLE_FLATTENING;
|
|
}
|
|
layer->SetContentFlags(flags);
|
|
|
|
SetFixedPositionLayerData(layer, data->mFixedPosFrameForLayerData,
|
|
!data->mSingleItemFixedToViewport);
|
|
|
|
PaintedLayerData* containingPaintedLayerData =
|
|
mLayerBuilder->GetContainingPaintedLayerData();
|
|
if (containingPaintedLayerData) {
|
|
if (!data->mDispatchToContentHitRegion.GetBounds().IsEmpty()) {
|
|
nsRect rect = nsLayoutUtils::TransformFrameRectToAncestor(
|
|
mContainerReferenceFrame,
|
|
data->mDispatchToContentHitRegion.GetBounds(),
|
|
containingPaintedLayerData->mReferenceFrame);
|
|
containingPaintedLayerData->mDispatchToContentHitRegion.Or(
|
|
containingPaintedLayerData->mDispatchToContentHitRegion, rect);
|
|
}
|
|
if (!data->mMaybeHitRegion.GetBounds().IsEmpty()) {
|
|
nsRect rect = nsLayoutUtils::TransformFrameRectToAncestor(
|
|
mContainerReferenceFrame,
|
|
data->mMaybeHitRegion.GetBounds(),
|
|
containingPaintedLayerData->mReferenceFrame);
|
|
containingPaintedLayerData->mMaybeHitRegion.Or(
|
|
containingPaintedLayerData->mMaybeHitRegion, rect);
|
|
}
|
|
nsLayoutUtils::TransformToAncestorAndCombineRegions(
|
|
data->mHitRegion.GetBounds(),
|
|
mContainerReferenceFrame,
|
|
containingPaintedLayerData->mReferenceFrame,
|
|
&containingPaintedLayerData->mHitRegion,
|
|
&containingPaintedLayerData->mMaybeHitRegion);
|
|
nsLayoutUtils::TransformToAncestorAndCombineRegions(
|
|
data->mNoActionRegion.GetBounds(),
|
|
mContainerReferenceFrame,
|
|
containingPaintedLayerData->mReferenceFrame,
|
|
&containingPaintedLayerData->mNoActionRegion,
|
|
&containingPaintedLayerData->mDispatchToContentHitRegion);
|
|
nsLayoutUtils::TransformToAncestorAndCombineRegions(
|
|
data->mHorizontalPanRegion.GetBounds(),
|
|
mContainerReferenceFrame,
|
|
containingPaintedLayerData->mReferenceFrame,
|
|
&containingPaintedLayerData->mHorizontalPanRegion,
|
|
&containingPaintedLayerData->mDispatchToContentHitRegion);
|
|
nsLayoutUtils::TransformToAncestorAndCombineRegions(
|
|
data->mVerticalPanRegion.GetBounds(),
|
|
mContainerReferenceFrame,
|
|
containingPaintedLayerData->mReferenceFrame,
|
|
&containingPaintedLayerData->mVerticalPanRegion,
|
|
&containingPaintedLayerData->mDispatchToContentHitRegion);
|
|
|
|
} else {
|
|
EventRegions regions;
|
|
regions.mHitRegion = ScaleRegionToOutsidePixels(data->mHitRegion);
|
|
regions.mNoActionRegion = ScaleRegionToOutsidePixels(data->mNoActionRegion);
|
|
regions.mHorizontalPanRegion = ScaleRegionToOutsidePixels(data->mHorizontalPanRegion);
|
|
regions.mVerticalPanRegion = ScaleRegionToOutsidePixels(data->mVerticalPanRegion);
|
|
// Points whose hit-region status we're not sure about need to be dispatched
|
|
// to the content thread. If a point is in both maybeHitRegion and hitRegion
|
|
// then it's not a "maybe" any more, and doesn't go into the dispatch-to-
|
|
// content region.
|
|
nsIntRegion maybeHitRegion = ScaleRegionToOutsidePixels(data->mMaybeHitRegion);
|
|
regions.mDispatchToContentHitRegion.Sub(maybeHitRegion, regions.mHitRegion);
|
|
regions.mDispatchToContentHitRegion.OrWith(
|
|
ScaleRegionToOutsidePixels(data->mDispatchToContentHitRegion));
|
|
regions.mHitRegion.OrWith(maybeHitRegion);
|
|
|
|
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::Accumulate(ContainerState* aState,
|
|
nsDisplayItem* aItem,
|
|
const nsIntRegion& aClippedOpaqueRegion,
|
|
const nsIntRect& aVisibleRect,
|
|
const DisplayItemClip& aClip,
|
|
LayerState aLayerState)
|
|
{
|
|
FLB_LOG_PAINTED_LAYER_DECISION(this, "Accumulating dp=%s(%p), f=%p against pld=%p\n", aItem->Name(), aItem, aItem->Frame(), this);
|
|
|
|
bool snap;
|
|
nsRect itemBounds = aItem->GetBounds(aState->mBuilder, &snap);
|
|
mBounds = mBounds.Union(aState->ScaleToOutsidePixels(itemBounds, snap));
|
|
|
|
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();
|
|
}
|
|
|
|
bool clipMatches = mItemClip == aClip;
|
|
mItemClip = aClip;
|
|
|
|
mAssignedDisplayItems.AppendElement(AssignedDisplayItem(aItem, aClip, aLayerState));
|
|
|
|
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;
|
|
}
|
|
|
|
/* 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) &&
|
|
aClippedOpaqueRegion.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();
|
|
if (isFirstVisibleItem) {
|
|
nscolor fontSmoothingBGColor;
|
|
if (aItem->ProvidesFontSmoothingBackgroundColor(aState->mBuilder,
|
|
&fontSmoothingBGColor)) {
|
|
mFontSmoothingBackgroundColor = fontSmoothingBGColor;
|
|
}
|
|
}
|
|
|
|
nscolor uniformColor;
|
|
bool isUniform = aItem->IsUniform(aState->mBuilder, &uniformColor);
|
|
|
|
// 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 (!isUniform || 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 (isUniform) {
|
|
bool snap;
|
|
nsRect bounds = aItem->GetBounds(aState->mBuilder, &snap);
|
|
if (!aState->ScaleToInsidePixels(bounds, snap).Contains(aVisibleRect)) {
|
|
isUniform = false;
|
|
FLB_LOG_PAINTED_LAYER_DECISION(this, " Display item does not cover the visible rect\n");
|
|
}
|
|
}
|
|
if (isUniform) {
|
|
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 (!aClippedOpaqueRegion.IsEmpty()) {
|
|
nsIntRegionRectIterator iter(aClippedOpaqueRegion);
|
|
for (const nsIntRect* r = iter.Next(); r; r = 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, *r);
|
|
// 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 = Move(tmp);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!aState->mParameters.mDisableSubpixelAntialiasingInDescendants) {
|
|
nsRect componentAlpha = aItem->GetComponentAlphaBounds(aState->mBuilder);
|
|
if (!componentAlpha.IsEmpty()) {
|
|
nsIntRect componentAlphaRect =
|
|
aState->ScaleToOutsidePixels(componentAlpha, false).Intersect(aVisibleRect);
|
|
if (!mOpaqueRegion.Contains(componentAlphaRect)) {
|
|
if (IsItemAreaInWindowOpaqueRegion(aState->mBuilder, aItem,
|
|
componentAlpha.Intersect(aItem->GetVisibleRect()))) {
|
|
mNeedComponentAlpha = true;
|
|
} else {
|
|
aItem->DisableComponentAlpha();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Ensure animated text does not get flattened, even if it forces other
|
|
// content in the container to be layerized. The content backend might
|
|
// not support subpixel positioning of text that animated transforms can
|
|
// generate. bug 633097
|
|
if (aState->mParameters.mInActiveTransformedSubtree &&
|
|
(mNeedComponentAlpha ||
|
|
!aItem->GetComponentAlphaBounds(aState->mBuilder).IsEmpty())) {
|
|
mDisableFlattening = true;
|
|
}
|
|
}
|
|
|
|
void
|
|
PaintedLayerData::AccumulateEventRegions(ContainerState* aState, nsDisplayLayerEventRegions* aEventRegions)
|
|
{
|
|
FLB_LOG_PAINTED_LAYER_DECISION(this, "Accumulating event regions %p against pld=%p\n", aEventRegions, this);
|
|
|
|
mHitRegion.Or(mHitRegion, aEventRegions->HitRegion());
|
|
mMaybeHitRegion.Or(mMaybeHitRegion, aEventRegions->MaybeHitRegion());
|
|
mDispatchToContentHitRegion.Or(mDispatchToContentHitRegion, aEventRegions->DispatchToContentHitRegion());
|
|
mNoActionRegion.Or(mNoActionRegion, aEventRegions->NoActionRegion());
|
|
mHorizontalPanRegion.Or(mHorizontalPanRegion, aEventRegions->HorizontalPanRegion());
|
|
mVerticalPanRegion.Or(mVerticalPanRegion, aEventRegions->VerticalPanRegion());
|
|
|
|
// Calculate scaled versions of the bounds of mHitRegion and mMaybeHitRegion
|
|
// for quick access in FindPaintedLayerFor().
|
|
mScaledHitRegionBounds = aState->ScaleToOutsidePixels(mHitRegion.GetBounds());
|
|
mScaledMaybeHitRegionBounds = aState->ScaleToOutsidePixels(mMaybeHitRegion.GetBounds());
|
|
}
|
|
|
|
PaintedLayerData
|
|
ContainerState::NewPaintedLayerData(nsDisplayItem* aItem,
|
|
const nsIntRect& aVisibleRect,
|
|
const nsIFrame* aAnimatedGeometryRoot,
|
|
const nsIFrame* aAnimatedGeometryRootForScrollMetadata,
|
|
const nsPoint& aTopLeft,
|
|
bool aShouldFixToViewport)
|
|
{
|
|
PaintedLayerData data;
|
|
data.mAnimatedGeometryRoot = aAnimatedGeometryRoot;
|
|
data.mAnimatedGeometryRootForScrollMetadata = aAnimatedGeometryRootForScrollMetadata;
|
|
data.mAnimatedGeometryRootOffset = aTopLeft;
|
|
data.mFixedPosFrameForLayerData =
|
|
FindFixedPosFrameForLayerData(aAnimatedGeometryRoot, aShouldFixToViewport);
|
|
data.mReferenceFrame = aItem->ReferenceFrame();
|
|
data.mSingleItemFixedToViewport = aShouldFixToViewport;
|
|
data.mBackfaceHidden = aItem->Frame()->BackfaceIsHidden();
|
|
data.mIsCaret = aItem->GetType() == nsDisplayItem::TYPE_CARET;
|
|
|
|
data.mNewChildLayersIndex = mNewChildLayers.Length();
|
|
NewLayerEntry* newLayerEntry = mNewChildLayers.AppendElement();
|
|
newLayerEntry->mAnimatedGeometryRoot = aAnimatedGeometryRoot;
|
|
newLayerEntry->mAnimatedGeometryRootForScrollMetadata = aAnimatedGeometryRootForScrollMetadata;
|
|
newLayerEntry->mFixedPosFrameForLayerData = data.mFixedPosFrameForLayerData;
|
|
newLayerEntry->mIsCaret = data.mIsCaret;
|
|
// newLayerEntry->mOpaqueRegion is filled in later from
|
|
// paintedLayerData->mOpaqueRegion, if necessary.
|
|
|
|
// Allocate another entry for this layer's optimization to ColorLayer/ImageLayer
|
|
mNewChildLayers.AppendElement();
|
|
|
|
return data;
|
|
}
|
|
|
|
#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,
|
|
nsRenderingContext* 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->GetVisibleRect().ToOutsidePixels(appUnitsPerDevPixel);
|
|
|
|
RefPtr<DrawTarget> tempDT;
|
|
if (gfxEnv::DumpPaint()) {
|
|
tempDT = gfxPlatform::GetPlatform()->CreateOffscreenContentDrawTarget(
|
|
itemVisibleRect.Size(),
|
|
SurfaceFormat::B8G8R8A8);
|
|
if (tempDT) {
|
|
context = new gfxContext(tempDT);
|
|
context->SetMatrix(gfxMatrix::Translation(-itemVisibleRect.x,
|
|
-itemVisibleRect.y));
|
|
}
|
|
}
|
|
#endif
|
|
basic->BeginTransaction();
|
|
basic->SetTarget(context);
|
|
|
|
if (aItem->GetType() == nsDisplayItem::TYPE_SVG_EFFECTS) {
|
|
static_cast<nsDisplaySVGEffects*>(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
|
|
}
|
|
|
|
/**
|
|
* Chooses a single active scrolled root for the entire display list, used
|
|
* when we are flattening layers.
|
|
*/
|
|
bool
|
|
ContainerState::ChooseAnimatedGeometryRoot(const nsDisplayList& aList,
|
|
const nsIFrame **aAnimatedGeometryRoot)
|
|
{
|
|
for (nsDisplayItem* item = aList.GetBottom(); item; item = item->GetAbove()) {
|
|
LayerState layerState = item->GetLayerState(mBuilder, mManager, mParameters);
|
|
// Don't use an item that won't be part of any PaintedLayers to pick the
|
|
// active scrolled root.
|
|
if (layerState == LAYER_ACTIVE_FORCE) {
|
|
continue;
|
|
}
|
|
|
|
// Try using the actual active scrolled root of the backmost item, as that
|
|
// should result in the least invalidation when scrolling.
|
|
*aAnimatedGeometryRoot =
|
|
nsLayoutUtils::GetAnimatedGeometryRootFor(item, mBuilder);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
nsIntRegion
|
|
ContainerState::ComputeOpaqueRect(nsDisplayItem* aItem,
|
|
const nsIFrame* aAnimatedGeometryRoot,
|
|
const nsIFrame* aFixedPosFrame,
|
|
const DisplayItemClip& aClip,
|
|
nsDisplayList* aList,
|
|
bool* aHideAllLayersBelow,
|
|
bool* aOpaqueForAnimatedGeometryRootParent)
|
|
{
|
|
bool snapOpaque;
|
|
nsRegion opaque = aItem->GetOpaqueRegion(mBuilder, &snapOpaque);
|
|
nsIntRegion opaquePixels;
|
|
if (!opaque.IsEmpty()) {
|
|
nsRegion opaqueClipped;
|
|
nsRegionRectIterator iter(opaque);
|
|
for (const nsRect* r = iter.Next(); r; r = iter.Next()) {
|
|
opaqueClipped.Or(opaqueClipped, aClip.ApproximateIntersectInward(*r));
|
|
}
|
|
if (aAnimatedGeometryRoot == mContainerAnimatedGeometryRoot &&
|
|
aFixedPosFrame == mContainerFixedPosFrame &&
|
|
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);
|
|
|
|
nsIScrollableFrame* sf = nsLayoutUtils::GetScrollableFrameFor(aAnimatedGeometryRoot);
|
|
if (sf) {
|
|
nsRect displayport;
|
|
bool usingDisplayport =
|
|
nsLayoutUtils::GetDisplayPort(aAnimatedGeometryRoot->GetContent(), &displayport);
|
|
if (!usingDisplayport) {
|
|
// No async scrolling, so all that matters is that the layer contents
|
|
// cover the scrollport.
|
|
displayport = sf->GetScrollPortRect();
|
|
}
|
|
nsIFrame* scrollFrame = do_QueryFrame(sf);
|
|
displayport += scrollFrame->GetOffsetToCrossDoc(mContainerReferenceFrame);
|
|
if (opaque.Contains(displayport)) {
|
|
*aOpaqueForAnimatedGeometryRootParent = true;
|
|
}
|
|
}
|
|
}
|
|
return opaquePixels;
|
|
}
|
|
|
|
static bool
|
|
IsCaretWithCustomClip(nsDisplayItem* aItem, nsDisplayItem::Type aItemType)
|
|
{
|
|
return aItemType == nsDisplayItem::TYPE_CARET &&
|
|
static_cast<nsDisplayCaret*>(aItem)->NeedsCustomScrollClip();
|
|
}
|
|
|
|
static DisplayItemClip
|
|
GetScrollClipIntersection(nsDisplayListBuilder* aBuilder, const nsIFrame* aAnimatedGeometryRoot,
|
|
const nsIFrame* aStopAtAnimatedGeometryRoot, bool aIsCaret)
|
|
{
|
|
DisplayItemClip resultClip;
|
|
nsIFrame* fParent;
|
|
for (const nsIFrame* f = aAnimatedGeometryRoot;
|
|
f != aStopAtAnimatedGeometryRoot;
|
|
f = nsLayoutUtils::GetAnimatedGeometryRootForFrame(aBuilder, fParent)) {
|
|
fParent = nsLayoutUtils::GetCrossDocParentFrame(f);
|
|
if (!fParent) {
|
|
// This means aStopAtAnimatedGeometryRoot was not an ancestor
|
|
// of aAnimatedGeometryRoot. This is a weird case but it
|
|
// can happen, e.g. when a scrolled frame contains a frame with opacity
|
|
// which contains a frame that is not scrolled by the scrolled frame.
|
|
// For now, we just don't apply any specific scroll clip to this layer.
|
|
return DisplayItemClip();
|
|
}
|
|
|
|
nsIScrollableFrame* scrollFrame = nsLayoutUtils::GetScrollableFrameFor(f);
|
|
if (!scrollFrame) {
|
|
continue;
|
|
}
|
|
|
|
Maybe<DisplayItemClip> clip = scrollFrame->ComputeScrollClip(aIsCaret);
|
|
if (clip) {
|
|
resultClip.IntersectWith(*clip);
|
|
}
|
|
}
|
|
return resultClip;
|
|
}
|
|
|
|
/*
|
|
* 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)
|
|
{
|
|
PROFILER_LABEL("ContainerState", "ProcessDisplayItems",
|
|
js::ProfileEntry::Category::GRAPHICS);
|
|
|
|
const nsIFrame* lastAnimatedGeometryRoot = mContainerReferenceFrame;
|
|
nsPoint topLeft(0,0);
|
|
|
|
// When NO_COMPONENT_ALPHA is set, items will be flattened into a single
|
|
// layer, so we need to choose which active scrolled root to use for all
|
|
// items.
|
|
if (mFlattenToSingleLayer) {
|
|
if (ChooseAnimatedGeometryRoot(*aList, &lastAnimatedGeometryRoot)) {
|
|
topLeft = lastAnimatedGeometryRoot->GetOffsetToCrossDoc(mContainerReferenceFrame);
|
|
}
|
|
}
|
|
|
|
int32_t maxLayers = nsDisplayItem::MaxActiveLayers();
|
|
int layerCount = 0;
|
|
|
|
nsDisplayList savedItems;
|
|
nsDisplayItem* item;
|
|
while ((item = aList->RemoveBottom()) != nullptr) {
|
|
// Peek ahead to the next item and try merging with it or swapping with it
|
|
// if necessary.
|
|
nsDisplayItem* aboveItem;
|
|
while ((aboveItem = aList->GetBottom()) != nullptr) {
|
|
if (aboveItem->TryMerge(mBuilder, item)) {
|
|
aList->RemoveBottom();
|
|
item->~nsDisplayItem();
|
|
item = aboveItem;
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
|
|
nsDisplayList* itemSameCoordinateSystemChildren
|
|
= item->GetSameCoordinateSystemChildren();
|
|
if (item->ShouldFlattenAway(mBuilder)) {
|
|
aList->AppendToBottom(itemSameCoordinateSystemChildren);
|
|
item->~nsDisplayItem();
|
|
continue;
|
|
}
|
|
|
|
savedItems.AppendToTop(item);
|
|
|
|
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 = item->GetLayerState(mBuilder, mManager, mParameters);
|
|
if (layerState == LAYER_INACTIVE &&
|
|
nsDisplayItem::ForceActiveLayers()) {
|
|
layerState = LAYER_ACTIVE;
|
|
}
|
|
|
|
bool forceInactive;
|
|
const nsIFrame* animatedGeometryRoot;
|
|
const nsIFrame* animatedGeometryRootForScrollMetadata = nullptr;
|
|
const nsIFrame* realAnimatedGeometryRootOfItem =
|
|
nsLayoutUtils::GetAnimatedGeometryRootFor(item, mBuilder);
|
|
if (mFlattenToSingleLayer) {
|
|
forceInactive = true;
|
|
animatedGeometryRoot = lastAnimatedGeometryRoot;
|
|
} else {
|
|
forceInactive = false;
|
|
if (mManager->IsWidgetLayerManager()) {
|
|
animatedGeometryRoot = realAnimatedGeometryRootOfItem;
|
|
// Unlike GetAnimatedGeometryRootFor(), GetAnimatedGeometryRootForFrame() does not
|
|
// take ShouldFixToViewport() into account, so it will return something different
|
|
// for fixed background items.
|
|
animatedGeometryRootForScrollMetadata = nsLayoutUtils::GetAnimatedGeometryRootFor(
|
|
item, mBuilder, nsLayoutUtils::AGR_IGNORE_BACKGROUND_ATTACHMENT_FIXED);
|
|
} else {
|
|
// For inactive layer subtrees, splitting content into PaintedLayers
|
|
// based on animated geometry roots is pointless. It's more efficient
|
|
// to build the minimum number of layers.
|
|
animatedGeometryRoot = mContainerAnimatedGeometryRoot;
|
|
|
|
}
|
|
if (animatedGeometryRoot != lastAnimatedGeometryRoot) {
|
|
lastAnimatedGeometryRoot = animatedGeometryRoot;
|
|
topLeft = animatedGeometryRoot->GetOffsetToCrossDoc(mContainerReferenceFrame);
|
|
}
|
|
}
|
|
if (!animatedGeometryRootForScrollMetadata) {
|
|
animatedGeometryRootForScrollMetadata = animatedGeometryRoot;
|
|
}
|
|
|
|
nsDisplayItem::Type itemType = item->GetType();
|
|
|
|
if (animatedGeometryRoot != realAnimatedGeometryRootOfItem) {
|
|
// Pick up any scroll clips that should apply to the item and apply them.
|
|
DisplayItemClip clip =
|
|
GetScrollClipIntersection(mBuilder, realAnimatedGeometryRootOfItem,
|
|
animatedGeometryRoot,
|
|
IsCaretWithCustomClip(item, itemType));
|
|
clip.IntersectWith(item->GetClip());
|
|
item->SetClip(mBuilder, clip);
|
|
}
|
|
|
|
bool shouldFixToViewport = !animatedGeometryRoot->GetParent() &&
|
|
item->ShouldFixToViewport(mBuilder);
|
|
|
|
// For items that are fixed to the viewport, remove their clip at the
|
|
// display item level because additional areas could be brought into
|
|
// view by async scrolling. Save the clip so we can set it on the layer
|
|
// instead later.
|
|
DisplayItemClip fixedToViewportClip = DisplayItemClip::NoClip();
|
|
if (shouldFixToViewport) {
|
|
fixedToViewportClip = item->GetClip();
|
|
item->SetClip(mBuilder, DisplayItemClip::NoClip());
|
|
}
|
|
|
|
bool snap;
|
|
nsRect itemContent = item->GetBounds(mBuilder, &snap);
|
|
if (itemType == nsDisplayItem::TYPE_LAYER_EVENT_REGIONS) {
|
|
nsDisplayLayerEventRegions* eventRegions =
|
|
static_cast<nsDisplayLayerEventRegions*>(item);
|
|
itemContent = eventRegions->GetHitRegionBounds(mBuilder, &snap);
|
|
}
|
|
nsIntRect itemDrawRect = ScaleToOutsidePixels(itemContent, snap);
|
|
bool prerenderedTransform = itemType == nsDisplayItem::TYPE_TRANSFORM &&
|
|
static_cast<nsDisplayTransform*>(item)->ShouldPrerender(mBuilder);
|
|
ParentLayerIntRect clipRect;
|
|
const DisplayItemClip& itemClip = item->GetClip();
|
|
if (itemClip.HasClip()) {
|
|
itemContent.IntersectRect(itemContent, itemClip.GetClipRect());
|
|
clipRect = ViewAs<ParentLayerPixel>(ScaleToNearestPixels(itemClip.GetClipRect()));
|
|
if (!prerenderedTransform) {
|
|
itemDrawRect.IntersectRect(itemDrawRect, ParentLayerIntRect::ToUntyped(clipRect));
|
|
}
|
|
clipRect.MoveBy(ViewAs<ParentLayerPixel>(mParameters.mOffset));
|
|
}
|
|
#ifdef DEBUG
|
|
nsRect bounds = itemContent;
|
|
bool dummy;
|
|
if (itemType == nsDisplayItem::TYPE_LAYER_EVENT_REGIONS) {
|
|
bounds = item->GetBounds(mBuilder, &dummy);
|
|
if (itemClip.HasClip()) {
|
|
bounds.IntersectRect(bounds, itemClip.GetClipRect());
|
|
}
|
|
}
|
|
bounds = fixedToViewportClip.ApplyNonRoundedIntersection(bounds);
|
|
((nsRect&)mAccumulatedChildBounds).UnionRect(mAccumulatedChildBounds, bounds);
|
|
#endif
|
|
|
|
nsIntRect itemVisibleRect = itemDrawRect;
|
|
if (!shouldFixToViewport) {
|
|
// We haven't computed visibility at this point, so item->GetVisibleRect()
|
|
// is just the dirty rect that item was initialized with. We intersect it
|
|
// with the clipped item bounds to get a tighter visible rect.
|
|
// However, we don't do this for fixed background images, because their
|
|
// clips can move asynchronously so we want the layer to contain the
|
|
// whole bounds of the display item.
|
|
itemVisibleRect = itemVisibleRect.Intersect(
|
|
ScaleToOutsidePixels(item->GetVisibleRect(), false));
|
|
}
|
|
|
|
if (maxLayers != -1 && layerCount >= maxLayers) {
|
|
forceInactive = true;
|
|
}
|
|
|
|
// Assign the item to a layer
|
|
if (layerState == LAYER_ACTIVE_FORCE ||
|
|
(layerState == LAYER_INACTIVE && !mManager->IsWidgetLayerManager()) ||
|
|
(!forceInactive &&
|
|
(layerState == LAYER_ACTIVE_EMPTY ||
|
|
layerState == LAYER_ACTIVE))) {
|
|
|
|
layerCount++;
|
|
|
|
// 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 != LAYER_ACTIVE_EMPTY ||
|
|
itemVisibleRect.IsEmpty(),
|
|
"State is 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.
|
|
InvalidateForLayerChange(item, nullptr);
|
|
|
|
// If the item would have its own layer but is invisible, just hide it.
|
|
// Note that items without their own layers can't be skipped this
|
|
// way, since their PaintedLayer may decide it wants to draw them
|
|
// into its buffer even if they're currently covered.
|
|
if (itemVisibleRect.IsEmpty() &&
|
|
!item->ShouldBuildLayerEvenIfInvisible(mBuilder)) {
|
|
continue;
|
|
}
|
|
|
|
// 3D-transformed layers don't necessarily draw in the order in which
|
|
// they're added to their parent container layer.
|
|
bool mayDrawOutOfOrder = itemType == nsDisplayItem::TYPE_TRANSFORM &&
|
|
(item->Frame()->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 ? &uniformColor : nullptr;
|
|
nsIntRect clipRectUntyped;
|
|
const DisplayItemClip& layerClip = shouldFixToViewport ? fixedToViewportClip : itemClip;
|
|
ParentLayerIntRect layerClipRect;
|
|
nsIntRect* clipPtr = nullptr;
|
|
if (layerClip.HasClip()) {
|
|
layerClipRect = ViewAs<ParentLayerPixel>(
|
|
ScaleToNearestPixels(layerClip.GetClipRect()) + mParameters.mOffset);
|
|
clipRectUntyped = ParentLayerIntRect::ToUntyped(layerClipRect);
|
|
clipPtr = &clipRectUntyped;
|
|
}
|
|
if (animatedGeometryRoot == item->Frame() &&
|
|
animatedGeometryRoot != mBuilder->RootReferenceFrame()) {
|
|
// This is the case for scrollbar thumbs, for example. In that case the
|
|
// clip we care about is the overflow:hidden clip on the scrollbar.
|
|
const nsIFrame* clipAnimatedGeometryRoot =
|
|
mPaintedLayerDataTree.GetParentAnimatedGeometryRoot(animatedGeometryRoot);
|
|
mPaintedLayerDataTree.AddingOwnLayer(clipAnimatedGeometryRoot,
|
|
clipPtr,
|
|
uniformColorPtr);
|
|
} else if (prerenderedTransform) {
|
|
mPaintedLayerDataTree.AddingOwnLayer(animatedGeometryRoot,
|
|
clipPtr,
|
|
uniformColorPtr);
|
|
} else {
|
|
// Using itemVisibleRect here isn't perfect. itemVisibleRect can be
|
|
// larger or smaller than the potential bounds of item's contents in
|
|
// animatedGeometryRoot: 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(animatedGeometryRoot,
|
|
&itemVisibleRect, uniformColorPtr);
|
|
}
|
|
|
|
mParameters.mBackgroundColor = uniformColor;
|
|
|
|
// 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);
|
|
mParameters.mLayerContentsVisibleRect = &layerContentsVisibleRect;
|
|
RefPtr<Layer> ownLayer = item->BuildLayer(mBuilder, mManager, mParameters);
|
|
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);
|
|
}
|
|
|
|
const nsIFrame* fixedPosFrame =
|
|
FindFixedPosFrameForLayerData(animatedGeometryRoot, shouldFixToViewport);
|
|
SetFixedPositionLayerData(ownLayer, fixedPosFrame, !shouldFixToViewport);
|
|
|
|
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(layerClip.HasClip() ||
|
|
layerClip.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.
|
|
if (layerClip.HasClip()) {
|
|
ownLayer->SetClipRect(Some(layerClipRect));
|
|
} else {
|
|
ownLayer->SetClipRect(Nothing());
|
|
}
|
|
|
|
// rounded rectangle clipping using mask layers
|
|
// (must be done after visible rect is set on layer)
|
|
if (layerClip.IsRectClippedByRoundedCorner(itemContent)) {
|
|
SetupMaskLayer(ownLayer, layerClip, itemVisibleRect);
|
|
}
|
|
|
|
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 = animatedGeometryRoot;
|
|
newLayerEntry->mAnimatedGeometryRootForScrollMetadata = animatedGeometryRootForScrollMetadata;
|
|
newLayerEntry->mFixedPosFrameForLayerData = fixedPosFrame;
|
|
|
|
// Don't attempt to flatten compnent alpha layers that are within
|
|
// a forced active layer, or an active transform;
|
|
if (itemType == nsDisplayItem::TYPE_TRANSFORM ||
|
|
layerState == LAYER_ACTIVE_FORCE) {
|
|
newLayerEntry->mPropagateComponentAlphaFlattening = false;
|
|
}
|
|
newLayerEntry->mIsCaret = itemType == nsDisplayItem::TYPE_CARET;
|
|
// nsDisplayTransform::BuildLayer must set layerContentsVisibleRect.
|
|
// We rely on this to ensure 3D transforms compute a reasonable
|
|
// layer visible region.
|
|
NS_ASSERTION(itemType != nsDisplayItem::TYPE_TRANSFORM ||
|
|
layerContentsVisibleRect.width >= 0,
|
|
"Transform items must set layerContentsVisibleRect!");
|
|
if (mLayerBuilder->IsBuildingRetainedLayers()) {
|
|
newLayerEntry->mLayerContentsVisibleRect = layerContentsVisibleRect;
|
|
if (itemType == nsDisplayItem::TYPE_TRANSFORM &&
|
|
(item->Frame()->Extend3DContext() ||
|
|
item->Frame()->Combines3DTransformWithAncestors())) {
|
|
// Give untransformed visible region as outer visible region
|
|
// to avoid failure caused by singular transforms.
|
|
newLayerEntry->mUntransformedVisibleRegion = true;
|
|
newLayerEntry->mVisibleRegion =
|
|
item->GetVisibleRectForChildren().ToOutsidePixels(mAppUnitsPerDevPixel);
|
|
} else {
|
|
newLayerEntry->mVisibleRegion = itemVisibleRect;
|
|
}
|
|
newLayerEntry->mOpaqueRegion = ComputeOpaqueRect(item,
|
|
animatedGeometryRoot, fixedPosFrame, layerClip, aList,
|
|
&newLayerEntry->mHideAllLayersBelow,
|
|
&newLayerEntry->mOpaqueForAnimatedGeometryRootParent);
|
|
} else {
|
|
bool useChildrenVisible =
|
|
itemType == nsDisplayItem::TYPE_TRANSFORM &&
|
|
item->Frame()->IsPreserve3DLeaf();
|
|
const nsIntRegion &visible = useChildrenVisible ?
|
|
item->GetVisibleRectForChildren().ToOutsidePixels(mAppUnitsPerDevPixel):
|
|
itemVisibleRect;
|
|
|
|
SetOuterVisibleRegionForLayer(ownLayer, visible,
|
|
layerContentsVisibleRect.width >= 0 ? &layerContentsVisibleRect : nullptr,
|
|
useChildrenVisible);
|
|
}
|
|
if (itemType == nsDisplayItem::TYPE_SCROLL_INFO_LAYER) {
|
|
nsDisplayScrollInfoLayer* scrollItem = static_cast<nsDisplayScrollInfoLayer*>(item);
|
|
newLayerEntry->mOpaqueForAnimatedGeometryRootParent = false;
|
|
newLayerEntry->mBaseFrameMetrics =
|
|
scrollItem->ComputeFrameMetrics(ownLayer, mParameters);
|
|
} else if ((itemType == nsDisplayItem::TYPE_SUBDOCUMENT ||
|
|
itemType == nsDisplayItem::TYPE_ZOOM ||
|
|
itemType == nsDisplayItem::TYPE_RESOLUTION) &&
|
|
gfxPrefs::LayoutUseContainersForRootFrames())
|
|
{
|
|
newLayerEntry->mBaseFrameMetrics =
|
|
static_cast<nsDisplaySubDocument*>(item)->ComputeFrameMetrics(ownLayer, mParameters);
|
|
}
|
|
|
|
/**
|
|
* No need to allocate geometry for items that aren't
|
|
* part of a PaintedLayer.
|
|
*/
|
|
mLayerBuilder->AddLayerDisplayItem(ownLayer, item,
|
|
layerState,
|
|
topLeft, nullptr);
|
|
} else {
|
|
bool forceOwnLayer = shouldFixToViewport || IsCaretWithCustomClip(item, itemType);
|
|
PaintedLayerData* paintedLayerData =
|
|
mPaintedLayerDataTree.FindPaintedLayerFor(animatedGeometryRoot, itemVisibleRect,
|
|
forceOwnLayer,
|
|
item->Frame()->BackfaceIsHidden(),
|
|
[&]() {
|
|
return NewPaintedLayerData(item, itemVisibleRect, animatedGeometryRoot,
|
|
animatedGeometryRootForScrollMetadata,
|
|
topLeft, shouldFixToViewport);
|
|
});
|
|
|
|
if (itemType == nsDisplayItem::TYPE_LAYER_EVENT_REGIONS) {
|
|
nsDisplayLayerEventRegions* eventRegions =
|
|
static_cast<nsDisplayLayerEventRegions*>(item);
|
|
paintedLayerData->AccumulateEventRegions(this, eventRegions);
|
|
} else {
|
|
// check to see if the new item has rounded rect clips in common with
|
|
// other items in the layer
|
|
if (mManager->IsWidgetLayerManager()) {
|
|
paintedLayerData->UpdateCommonClipCount(itemClip);
|
|
}
|
|
nsIntRegion opaquePixels = ComputeOpaqueRect(item,
|
|
animatedGeometryRoot, paintedLayerData->mFixedPosFrameForLayerData,
|
|
itemClip, aList,
|
|
&paintedLayerData->mHideAllLayersBelow,
|
|
&paintedLayerData->mOpaqueForAnimatedGeometryRootParent);
|
|
MOZ_ASSERT(nsIntRegion(itemDrawRect).Contains(opaquePixels));
|
|
opaquePixels.AndWith(itemVisibleRect);
|
|
paintedLayerData->Accumulate(this, item, opaquePixels,
|
|
itemVisibleRect, itemClip, layerState);
|
|
|
|
// If we removed the clip from the display item above because it's
|
|
// fixed to the viewport, save it on the PaintedLayerData so we can
|
|
// set it on the layer later.
|
|
if (fixedToViewportClip.HasClip()) {
|
|
paintedLayerData->mItemClip = fixedToViewportClip;
|
|
}
|
|
|
|
if (!paintedLayerData->mLayer) {
|
|
// Try to recycle the old layer of this display item.
|
|
RefPtr<PaintedLayer> layer =
|
|
AttemptToRecyclePaintedLayer(animatedGeometryRoot, item, topLeft);
|
|
if (layer) {
|
|
paintedLayerData->mLayer = layer;
|
|
|
|
NS_ASSERTION(FindIndexOfLayerIn(mNewChildLayers, layer) < 0,
|
|
"Layer already in list???");
|
|
mNewChildLayers[paintedLayerData->mNewChildLayersIndex].mLayer = layer.forget();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (itemSameCoordinateSystemChildren &&
|
|
itemSameCoordinateSystemChildren->NeedsTransparentSurface()) {
|
|
aList->SetNeedsTransparentSurface();
|
|
}
|
|
}
|
|
|
|
aList->AppendToTop(&savedItems);
|
|
}
|
|
|
|
void
|
|
ContainerState::InvalidateForLayerChange(nsDisplayItem* aItem, PaintedLayer* aNewLayer)
|
|
{
|
|
NS_ASSERTION(aItem->GetPerFrameKey(),
|
|
"Display items that render using Thebes must have a key");
|
|
nsDisplayItemGeometry* oldGeometry = nullptr;
|
|
DisplayItemClip* oldClip = nullptr;
|
|
Layer* oldLayer = mLayerBuilder->GetOldLayerFor(aItem, &oldGeometry, &oldClip);
|
|
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 && oldGeometry) {
|
|
// 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
|
|
InvalidatePostTransformRegion(t,
|
|
oldGeometry->ComputeInvalidationRegion(),
|
|
*oldClip,
|
|
mLayerBuilder->GetLastPaintOffset(t));
|
|
}
|
|
// Clear the old geometry so that invalidation thinks the item has been
|
|
// added this paint.
|
|
mLayerBuilder->ClearCachedGeometry(aItem);
|
|
aItem->NotifyRenderingChanged();
|
|
}
|
|
}
|
|
|
|
void
|
|
FrameLayerBuilder::ComputeGeometryChangeForItem(DisplayItemData* aData)
|
|
{
|
|
nsDisplayItem *item = aData->mItem;
|
|
PaintedLayer* paintedLayer = aData->mLayer->AsPaintedLayer();
|
|
if (!item || !paintedLayer) {
|
|
aData->EndUpdate();
|
|
return;
|
|
}
|
|
|
|
PaintedLayerItemsEntry* entry = mPaintedLayerItems.GetEntry(paintedLayer);
|
|
|
|
nsAutoPtr<nsDisplayItemGeometry> geometry(item->AllocateGeometry(mDisplayListBuilder));
|
|
|
|
PaintedDisplayItemLayerUserData* layerData =
|
|
static_cast<PaintedDisplayItemLayerUserData*>(aData->mLayer->GetUserData(&gPaintedDisplayItemLayerUserData));
|
|
nsPoint shift = layerData->mAnimatedGeometryRootOrigin - layerData->mLastAnimatedGeometryRootOrigin;
|
|
|
|
const DisplayItemClip& clip = item->GetClip();
|
|
|
|
// 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;
|
|
nsRegion combined;
|
|
bool notifyRenderingChanged = true;
|
|
if (!aData->mGeometry) {
|
|
// This item is being added for the first time, invalidate its entire area.
|
|
//TODO: We call GetGeometry again in AddPaintedDisplayItem, we should reuse this.
|
|
combined = clip.ApplyNonRoundedIntersection(geometry->ComputeInvalidationRegion());
|
|
#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())) {
|
|
// Either layout marked item as needing repainting, invalidate the entire old and new areas.
|
|
combined = aData->mClip.ApplyNonRoundedIntersection(aData->mGeometry->ComputeInvalidationRegion());
|
|
combined.MoveBy(shift);
|
|
combined.Or(combined, clip.ApplyNonRoundedIntersection(geometry->ComputeInvalidationRegion()));
|
|
#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 nsTArray<nsIFrame*>& changedFrames = aData->GetFrameListChanges();
|
|
|
|
// We have an optimization to cache the drawing background-attachment: fixed canvas
|
|
// background images so we can scroll and just blit them when they are flattened into
|
|
// the same layer as scrolling content. NotifyRenderingChanged is only used to tell
|
|
// the canvas bg image item to purge this cache. We want to be careful not to accidentally
|
|
// purge the cache if we are just invalidating due to scrolling (ie the background image
|
|
// moves on the scrolling layer but it's rendering stays the same) so if
|
|
// AddOffsetAndComputeDifference is the only thing that will invalidate we skip the
|
|
// NotifyRenderingChanged call (ComputeInvalidationRegion for background images also calls
|
|
// NotifyRenderingChanged if anything changes).
|
|
if (aData->mGeometry->ComputeInvalidationRegion() == geometry->ComputeInvalidationRegion() &&
|
|
aData->mClip == clip && invalid.IsEmpty() && changedFrames.Length() == 0) {
|
|
notifyRenderingChanged = false;
|
|
}
|
|
|
|
aData->mGeometry->MoveBy(shift);
|
|
item->ComputeInvalidationRegion(mDisplayListBuilder, aData->mGeometry, &combined);
|
|
aData->mClip.AddOffsetAndComputeDifference(entry->mCommonClipCount,
|
|
shift, aData->mGeometry->ComputeInvalidationRegion(),
|
|
clip, entry->mLastCommonClipCount, geometry->ComputeInvalidationRegion(),
|
|
&combined);
|
|
|
|
// Add in any rect that the frame specified
|
|
combined.Or(combined, invalid);
|
|
|
|
for (uint32_t i = 0; i < changedFrames.Length(); i++) {
|
|
combined.Or(combined, changedFrames[i]->GetVisualOverflowRect());
|
|
}
|
|
|
|
// Restrict invalidation to the clipped region
|
|
nsRegion clipRegion;
|
|
if (clip.ComputeRegionInClips(&aData->mClip, shift, &clipRegion)) {
|
|
combined.And(combined, clipRegion);
|
|
}
|
|
#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 (!combined.IsEmpty()) {
|
|
if (notifyRenderingChanged) {
|
|
item->NotifyRenderingChanged();
|
|
}
|
|
InvalidatePostTransformRegion(paintedLayer,
|
|
combined.ScaleToOutsidePixels(layerData->mXScale, layerData->mYScale, layerData->mAppUnitsPerDevPixel),
|
|
layerData->mTranslation,
|
|
layerData);
|
|
}
|
|
|
|
aData->EndUpdate(geometry);
|
|
}
|
|
|
|
void
|
|
FrameLayerBuilder::AddPaintedDisplayItem(PaintedLayerData* aLayerData,
|
|
nsDisplayItem* aItem,
|
|
const DisplayItemClip& aClip,
|
|
ContainerState& aContainerState,
|
|
LayerState aLayerState,
|
|
const nsPoint& aTopLeft)
|
|
{
|
|
PaintedLayer* layer = aLayerData->mLayer;
|
|
PaintedDisplayItemLayerUserData* paintedData =
|
|
static_cast<PaintedDisplayItemLayerUserData*>
|
|
(layer->GetUserData(&gPaintedDisplayItemLayerUserData));
|
|
RefPtr<BasicLayerManager> tempManager;
|
|
nsIntRect intClip;
|
|
bool hasClip = false;
|
|
if (aLayerState != LAYER_NONE) {
|
|
DisplayItemData *data = GetDisplayItemDataForManager(aItem, layer->Manager());
|
|
if (data) {
|
|
tempManager = data->mInactiveManager;
|
|
}
|
|
if (!tempManager) {
|
|
tempManager = new BasicLayerManager(BasicLayerManager::BLM_INACTIVE);
|
|
}
|
|
|
|
// We need to grab these before calling AddLayerDisplayItem because it will overwrite them.
|
|
nsRegion clip;
|
|
DisplayItemClip* oldClip = nullptr;
|
|
GetOldLayerFor(aItem, nullptr, &oldClip);
|
|
hasClip = aClip.ComputeRegionInClips(oldClip,
|
|
aTopLeft - paintedData->mLastAnimatedGeometryRootOrigin,
|
|
&clip);
|
|
|
|
if (hasClip) {
|
|
intClip = clip.GetBounds().ScaleToOutsidePixels(paintedData->mXScale,
|
|
paintedData->mYScale,
|
|
paintedData->mAppUnitsPerDevPixel);
|
|
}
|
|
}
|
|
|
|
AddLayerDisplayItem(layer, aItem, aLayerState, aTopLeft, tempManager);
|
|
|
|
PaintedLayerItemsEntry* entry = mPaintedLayerItems.PutEntry(layer);
|
|
if (entry) {
|
|
entry->mContainerLayerFrame = aContainerState.GetContainerFrame();
|
|
if (entry->mContainerLayerGeneration == 0) {
|
|
entry->mContainerLayerGeneration = mContainerLayerGeneration;
|
|
}
|
|
if (tempManager) {
|
|
FLB_LOG_PAINTED_LAYER_DECISION(aLayerData, "Creating nested FLB for item %p\n", aItem);
|
|
FrameLayerBuilder* layerBuilder = new FrameLayerBuilder();
|
|
layerBuilder->Init(mDisplayListBuilder, tempManager, aLayerData);
|
|
|
|
tempManager->BeginTransaction();
|
|
if (mRetainingManager) {
|
|
layerBuilder->DidBeginRetainedLayerTransaction(tempManager);
|
|
}
|
|
|
|
UniquePtr<LayerProperties> props(LayerProperties::CloneFrom(tempManager->GetRoot()));
|
|
RefPtr<Layer> tmpLayer =
|
|
aItem->BuildLayer(mDisplayListBuilder, tempManager, ContainerLayerParameters());
|
|
// 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);
|
|
return;
|
|
}
|
|
|
|
bool snap;
|
|
nsRect visibleRect =
|
|
aItem->GetVisibleRect().Intersect(aItem->GetBounds(mDisplayListBuilder, &snap));
|
|
nsIntRegion rgn = visibleRect.ToOutsidePixels(paintedData->mAppUnitsPerDevPixel);
|
|
SetOuterVisibleRegion(tmpLayer, &rgn);
|
|
|
|
// 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
|
|
layerBuilder->StoreDataForFrame(aItem, tmpLayer, LAYER_ACTIVE);
|
|
}
|
|
|
|
tempManager->SetRoot(tmpLayer);
|
|
layerBuilder->WillEndTransaction();
|
|
tempManager->AbortTransaction();
|
|
|
|
#ifdef MOZ_DUMP_PAINTING
|
|
if (gfxUtils::DumpDisplayList() || gfxEnv::DumpPaint()) {
|
|
fprintf_stderr(gfxUtils::sDumpPaintFile, "Basic layer tree for painting contents of display item %s(%p):\n", aItem->Name(), aItem->Frame());
|
|
std::stringstream stream;
|
|
tempManager->Dump(stream, "", gfxEnv::DumpPaintToFile());
|
|
fprint_stderr(gfxUtils::sDumpPaintFile, stream); // not a typo, fprint_stderr declared in LayersLogging.h
|
|
}
|
|
#endif
|
|
|
|
nsIntPoint offset = GetLastPaintOffset(layer) - GetTranslationForPaintedLayer(layer);
|
|
props->MoveBy(-offset);
|
|
nsIntRegion invalid = props->ComputeDifferences(tmpLayer, nullptr);
|
|
if (aLayerState == LAYER_SVG_EFFECTS) {
|
|
invalid = nsSVGIntegrationUtils::AdjustInvalidAreaForSVGEffects(aItem->Frame(),
|
|
aItem->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->Name(), aItem->Frame(), layer);
|
|
}
|
|
#endif
|
|
invalid.ScaleRoundOut(paintedData->mXScale, paintedData->mYScale);
|
|
|
|
if (hasClip) {
|
|
invalid.And(invalid, intClip);
|
|
}
|
|
|
|
InvalidatePostTransformRegion(layer, invalid,
|
|
GetTranslationForPaintedLayer(layer),
|
|
paintedData);
|
|
}
|
|
}
|
|
ClippedDisplayItem* cdi =
|
|
entry->mItems.AppendElement(ClippedDisplayItem(aItem,
|
|
mContainerLayerGeneration));
|
|
cdi->mInactiveLayerManager = tempManager;
|
|
}
|
|
}
|
|
|
|
FrameLayerBuilder::DisplayItemData*
|
|
FrameLayerBuilder::StoreDataForFrame(nsDisplayItem* aItem, Layer* aLayer, LayerState aState)
|
|
{
|
|
DisplayItemData* oldData = GetDisplayItemDataForManager(aItem, mRetainingManager);
|
|
if (oldData) {
|
|
if (!oldData->mUsed) {
|
|
oldData->BeginUpdate(aLayer, aState, mContainerLayerGeneration, aItem);
|
|
}
|
|
return oldData;
|
|
}
|
|
|
|
LayerManagerData* lmd = static_cast<LayerManagerData*>
|
|
(mRetainingManager->GetUserData(&gLayerManagerUserData));
|
|
|
|
RefPtr<DisplayItemData> data =
|
|
new DisplayItemData(lmd, aItem->GetPerFrameKey(), aLayer);
|
|
|
|
data->BeginUpdate(aLayer, aState, mContainerLayerGeneration, aItem);
|
|
|
|
lmd->mDisplayItems.PutEntry(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, mContainerLayerGeneration);
|
|
return;
|
|
}
|
|
|
|
LayerManagerData* lmd = static_cast<LayerManagerData*>
|
|
(mRetainingManager->GetUserData(&gLayerManagerUserData));
|
|
|
|
RefPtr<DisplayItemData> data =
|
|
new DisplayItemData(lmd, aDisplayItemKey, aLayer, aFrame);
|
|
|
|
data->BeginUpdate(aLayer, aState, mContainerLayerGeneration);
|
|
|
|
lmd->mDisplayItems.PutEntry(data);
|
|
}
|
|
|
|
FrameLayerBuilder::ClippedDisplayItem::ClippedDisplayItem(nsDisplayItem* aItem,
|
|
uint32_t aGeneration)
|
|
: mItem(aItem)
|
|
, mContainerLayerGeneration(aGeneration)
|
|
{
|
|
}
|
|
|
|
FrameLayerBuilder::ClippedDisplayItem::~ClippedDisplayItem()
|
|
{
|
|
if (mInactiveLayerManager) {
|
|
mInactiveLayerManager->SetUserData(&gLayerManagerLayerBuilder, nullptr);
|
|
}
|
|
}
|
|
|
|
FrameLayerBuilder::PaintedLayerItemsEntry::PaintedLayerItemsEntry(const PaintedLayer *aKey)
|
|
: nsPtrHashKey<PaintedLayer>(aKey)
|
|
, mContainerLayerFrame(nullptr)
|
|
, mLastCommonClipCount(0)
|
|
, mContainerLayerGeneration(0)
|
|
, mHasExplicitLastPaintOffset(false)
|
|
, mCommonClipCount(0)
|
|
{
|
|
}
|
|
|
|
FrameLayerBuilder::PaintedLayerItemsEntry::PaintedLayerItemsEntry(const PaintedLayerItemsEntry& aOther)
|
|
: nsPtrHashKey<PaintedLayer>(aOther.mKey)
|
|
, mItems(aOther.mItems)
|
|
{
|
|
NS_ERROR("Should never be called, since we ALLOW_MEMMOVE");
|
|
}
|
|
|
|
FrameLayerBuilder::PaintedLayerItemsEntry::~PaintedLayerItemsEntry()
|
|
{
|
|
}
|
|
|
|
void
|
|
FrameLayerBuilder::AddLayerDisplayItem(Layer* aLayer,
|
|
nsDisplayItem* aItem,
|
|
LayerState aLayerState,
|
|
const nsPoint& aTopLeft,
|
|
BasicLayerManager* aManager)
|
|
{
|
|
if (aLayer->Manager() != mRetainingManager)
|
|
return;
|
|
|
|
DisplayItemData *data = StoreDataForFrame(aItem, aLayer, aLayerState);
|
|
data->mInactiveManager = aManager;
|
|
}
|
|
|
|
nsIntPoint
|
|
FrameLayerBuilder::GetLastPaintOffset(PaintedLayer* aLayer)
|
|
{
|
|
PaintedLayerItemsEntry* entry = mPaintedLayerItems.PutEntry(aLayer);
|
|
if (entry) {
|
|
if (entry->mContainerLayerGeneration == 0) {
|
|
entry->mContainerLayerGeneration = mContainerLayerGeneration;
|
|
}
|
|
if (entry->mHasExplicitLastPaintOffset)
|
|
return entry->mLastPaintOffset;
|
|
}
|
|
return GetTranslationForPaintedLayer(aLayer);
|
|
}
|
|
|
|
void
|
|
FrameLayerBuilder::SavePreviousDataForLayer(PaintedLayer* aLayer, uint32_t aClipCount)
|
|
{
|
|
PaintedLayerItemsEntry* entry = mPaintedLayerItems.PutEntry(aLayer);
|
|
if (entry) {
|
|
if (entry->mContainerLayerGeneration == 0) {
|
|
entry->mContainerLayerGeneration = mContainerLayerGeneration;
|
|
}
|
|
entry->mLastPaintOffset = GetTranslationForPaintedLayer(aLayer);
|
|
entry->mHasExplicitLastPaintOffset = true;
|
|
entry->mLastCommonClipCount = aClipCount;
|
|
}
|
|
}
|
|
|
|
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);
|
|
|
|
return false;
|
|
}
|
|
|
|
void
|
|
ContainerState::CollectOldLayers()
|
|
{
|
|
for (Layer* layer = mContainerLayer->GetFirstChild(); layer;
|
|
layer = layer->GetNextSibling()) {
|
|
NS_ASSERTION(!layer->HasUserData(&gMaskLayerUserData),
|
|
"Mask layer in layer tree; could not be recycled.");
|
|
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 {
|
|
const nsIFrame* mAnimatedGeometryRoot;
|
|
const nsIFrame* mFixedPosFrameForLayerData;
|
|
nsIntRegion mOpaqueRegion;
|
|
};
|
|
|
|
static OpaqueRegionEntry*
|
|
FindOpaqueRegionEntry(nsTArray<OpaqueRegionEntry>& aEntries,
|
|
const nsIFrame* aAnimatedGeometryRoot,
|
|
const nsIFrame* aFixedPosFrameForLayerData)
|
|
{
|
|
for (uint32_t i = 0; i < aEntries.Length(); ++i) {
|
|
OpaqueRegionEntry* d = &aEntries[i];
|
|
if (d->mAnimatedGeometryRoot == aAnimatedGeometryRoot &&
|
|
d->mFixedPosFrameForLayerData == aFixedPosFrameForLayerData) {
|
|
return d;
|
|
}
|
|
}
|
|
return nullptr;
|
|
}
|
|
|
|
void
|
|
ContainerState::SetupScrollingMetadata(NewLayerEntry* aEntry)
|
|
{
|
|
if (mFlattenToSingleLayer) {
|
|
// animated geometry roots are forced to all match, so we can't
|
|
// use them and we don't get async scrolling.
|
|
return;
|
|
}
|
|
|
|
if (!mBuilder->IsPaintingToWindow()) {
|
|
// async scrolling not possible, and async scrolling info not computed
|
|
// for this paint.
|
|
return;
|
|
}
|
|
|
|
nsAutoTArray<FrameMetrics,2> metricsArray;
|
|
if (aEntry->mBaseFrameMetrics) {
|
|
metricsArray.AppendElement(*aEntry->mBaseFrameMetrics);
|
|
|
|
// The base FrameMetrics was not computed by the nsIScrollableframe, so it
|
|
// should not have a mask layer.
|
|
MOZ_ASSERT(!aEntry->mBaseFrameMetrics->GetMaskLayerIndex());
|
|
}
|
|
uint32_t baseLength = metricsArray.Length();
|
|
|
|
// Any extra mask layers we need to attach to FrameMetrics.
|
|
nsTArray<RefPtr<Layer>> maskLayers;
|
|
|
|
nsIFrame* fParent;
|
|
for (const nsIFrame* f = aEntry->mAnimatedGeometryRootForScrollMetadata;
|
|
f != mContainerAnimatedGeometryRoot;
|
|
f = nsLayoutUtils::GetAnimatedGeometryRootForFrame(this->mBuilder, fParent)) {
|
|
fParent = nsLayoutUtils::GetCrossDocParentFrame(f);
|
|
if (!fParent) {
|
|
// This means mContainerAnimatedGeometryRoot was not an ancestor
|
|
// of aEntry->mAnimatedGeometryRoot. This is a weird case but it
|
|
// can happen, e.g. when a scrolled frame contains a frame with opacity
|
|
// which contains a frame that is not scrolled by the scrolled frame.
|
|
// For now, we just don't apply any specific async scrolling to this layer.
|
|
// It will async-scroll with mContainerAnimatedGeometryRoot, which
|
|
// is substandard but not fatal.
|
|
metricsArray.SetLength(baseLength);
|
|
aEntry->mLayer->SetFrameMetrics(metricsArray);
|
|
return;
|
|
}
|
|
|
|
nsIScrollableFrame* scrollFrame = nsLayoutUtils::GetScrollableFrameFor(f);
|
|
if (!scrollFrame) {
|
|
continue;
|
|
}
|
|
|
|
Maybe<FrameMetricsAndClip> info =
|
|
scrollFrame->ComputeFrameMetrics(aEntry->mLayer, mContainerReferenceFrame, mParameters, aEntry->mIsCaret);
|
|
if (!info) {
|
|
continue;
|
|
}
|
|
|
|
FrameMetrics& metrics = info->metrics;
|
|
Maybe<DisplayItemClip> clip = info->clip;
|
|
|
|
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, aEntry->mVisibleRegion, nextIndex, clip->GetRoundedRectCount());
|
|
if (maskLayer) {
|
|
metrics.SetMaskLayerIndex(nextIndex);
|
|
maskLayers.AppendElement(maskLayer);
|
|
}
|
|
}
|
|
|
|
metricsArray.AppendElement(metrics);
|
|
}
|
|
|
|
// Watch out for FrameMetrics copies in profiles
|
|
aEntry->mLayer->SetFrameMetrics(metricsArray);
|
|
aEntry->mLayer->SetAncestorMaskLayers(maskLayers);
|
|
}
|
|
|
|
static void
|
|
InvalidateVisibleBoundsChangesForScrolledLayer(PaintedLayer* aLayer)
|
|
{
|
|
PaintedDisplayItemLayerUserData* data =
|
|
static_cast<PaintedDisplayItemLayerUserData*>(aLayer->GetUserData(&gPaintedDisplayItemLayerUserData));
|
|
|
|
if (data->mIgnoreInvalidationsOutsideRect) {
|
|
// We haven't invalidated anything outside *data->mIgnoreInvalidationsOutsideRect
|
|
// during DLBI. Now is the right time to do that, because at this point aLayer
|
|
// knows its new visible region.
|
|
// We use the visible regions' bounds here (as opposed to the true region)
|
|
// in order to limit rgn's complexity. The only possible disadvantage of
|
|
// this is that it might cause us to unnecessarily recomposite parts of the
|
|
// window that are in the visible region's bounds but not in the visible
|
|
// region itself, but that is acceptable for scrolled layers.
|
|
nsIntRegion rgn;
|
|
rgn.Or(data->mOldVisibleBounds, aLayer->GetVisibleRegion().GetBounds());
|
|
rgn.Sub(rgn, *data->mIgnoreInvalidationsOutsideRect);
|
|
if (!rgn.IsEmpty()) {
|
|
aLayer->InvalidateRegion(rgn);
|
|
#ifdef MOZ_DUMP_PAINTING
|
|
if (nsLayoutUtils::InvalidationDebuggingIsEnabled()) {
|
|
printf_stderr("Invalidating changes of the visible region bounds of the scrolled contents\n");
|
|
nsAutoCString str;
|
|
AppendToString(str, rgn);
|
|
printf_stderr("Invalidating layer %p: %s\n", aLayer, str.get());
|
|
}
|
|
#endif
|
|
}
|
|
data->mIgnoreInvalidationsOutsideRect = Nothing();
|
|
}
|
|
}
|
|
|
|
static inline const Maybe<ParentLayerIntRect>&
|
|
GetStationaryClipInContainer(Layer* aLayer)
|
|
{
|
|
if (size_t metricsCount = aLayer->GetFrameMetricsCount()) {
|
|
return aLayer->GetFrameMetrics(metricsCount - 1).GetClipRect();
|
|
}
|
|
return aLayer->GetClipRect();
|
|
}
|
|
|
|
void
|
|
ContainerState::PostprocessRetainedLayers(nsIntRegion* aOpaqueRegionForContainer)
|
|
{
|
|
nsAutoTArray<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;
|
|
}
|
|
|
|
// If mFlattenToSingleLayer is true, there isn't going to be any
|
|
// async scrolling so we can apply all our opaqueness to the same
|
|
// entry, the entry for mContainerAnimatedGeometryRoot.
|
|
const nsIFrame* animatedGeometryRootForOpaqueness =
|
|
mFlattenToSingleLayer ? mContainerAnimatedGeometryRoot : e->mAnimatedGeometryRoot;
|
|
OpaqueRegionEntry* data = FindOpaqueRegionEntry(opaqueRegions,
|
|
animatedGeometryRootForOpaqueness, e->mFixedPosFrameForLayerData);
|
|
|
|
SetupScrollingMetadata(e);
|
|
|
|
if (hideAll) {
|
|
e->mVisibleRegion.SetEmpty();
|
|
} else if (!e->mLayer->IsScrollbarContainer()) {
|
|
const Maybe<ParentLayerIntRect>& clipRect = GetStationaryClipInContainer(e->mLayer);
|
|
if (clipRect && opaqueRegionForContainer >= 0 &&
|
|
opaqueRegions[opaqueRegionForContainer].mOpaqueRegion.Contains(ParentLayerIntRect::ToUntyped(*clipRect))) {
|
|
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);
|
|
|
|
PaintedLayer* p = e->mLayer->AsPaintedLayer();
|
|
if (p) {
|
|
InvalidateVisibleBoundsChangesForScrolledLayer(p);
|
|
}
|
|
|
|
if (!e->mOpaqueRegion.IsEmpty()) {
|
|
const nsIFrame* animatedGeometryRootToCover = animatedGeometryRootForOpaqueness;
|
|
if (e->mOpaqueForAnimatedGeometryRootParent &&
|
|
nsLayoutUtils::GetAnimatedGeometryRootForFrame(mBuilder, e->mAnimatedGeometryRoot->GetParent())
|
|
== mContainerAnimatedGeometryRoot) {
|
|
animatedGeometryRootToCover = mContainerAnimatedGeometryRoot;
|
|
data = FindOpaqueRegionEntry(opaqueRegions,
|
|
animatedGeometryRootToCover, e->mFixedPosFrameForLayerData);
|
|
}
|
|
|
|
if (!data) {
|
|
if (animatedGeometryRootToCover == mContainerAnimatedGeometryRoot &&
|
|
e->mFixedPosFrameForLayerData == mContainerFixedPosFrame) {
|
|
NS_ASSERTION(opaqueRegionForContainer == -1, "Already found it?");
|
|
opaqueRegionForContainer = opaqueRegions.Length();
|
|
}
|
|
data = opaqueRegions.AppendElement();
|
|
data->mAnimatedGeometryRoot = animatedGeometryRootToCover;
|
|
data->mFixedPosFrameForLayerData = e->mFixedPosFrameForLayerData;
|
|
}
|
|
|
|
nsIntRegion clippedOpaque = e->mOpaqueRegion;
|
|
Maybe<ParentLayerIntRect> clipRect = e->mLayer->GetCombinedClipRect();
|
|
if (clipRect) {
|
|
clippedOpaque.AndWith(ParentLayerIntRect::ToUntyped(*clipRect));
|
|
}
|
|
if (e->mLayer->GetIsFixedPosition() && !e->mLayer->IsClipFixed()) {
|
|
// The clip can move asynchronously, so we can't rely on opaque parts
|
|
// staying in the same place.
|
|
clippedOpaque.SetEmpty();
|
|
}
|
|
data->mOpaqueRegion.Or(data->mOpaqueRegion, clippedOpaque);
|
|
if (e->mHideAllLayersBelow) {
|
|
hideAll = true;
|
|
}
|
|
}
|
|
|
|
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, LayerManagerData* aData,
|
|
const nsIntRect& aContainerPixelBounds,
|
|
nsDisplayList* aChildItems, bool& aHasComponentAlphaChildren)
|
|
{
|
|
mPaintedLayerDataTree.Finish();
|
|
|
|
NS_ASSERTION(mContainerBounds.Contains(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);
|
|
|
|
// Notify the parent of component alpha children unless it's coming from
|
|
// within a child that has asked not to contribute to layer flattening.
|
|
if (mNewChildLayers[i].mPropagateComponentAlphaFlattening &&
|
|
(layer->GetContentFlags() & Layer::CONTENT_COMPONENT_ALPHA)) {
|
|
aHasComponentAlphaChildren = true;
|
|
}
|
|
}
|
|
|
|
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 inline gfxSize RoundToFloatPrecision(const gfxSize& aSize)
|
|
{
|
|
return gfxSize(float(aSize.width), float(aSize.height));
|
|
}
|
|
|
|
static inline gfxSize NudgedToIntegerSize(const gfxSize& aSize)
|
|
{
|
|
float width = aSize.width;
|
|
float height = aSize.height;
|
|
gfx::NudgeToInteger(&width);
|
|
gfx::NudgeToInteger(&height);
|
|
return gfxSize(width, height);
|
|
}
|
|
|
|
static void RestrictScaleToMaxLayerSize(gfxSize& 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 bool
|
|
ChooseScaleAndSetTransform(FrameLayerBuilder* aLayerBuilder,
|
|
nsDisplayListBuilder* aDisplayListBuilder,
|
|
nsIFrame* aContainerFrame,
|
|
nsDisplayItem* aContainerItem,
|
|
const nsRect& aVisibleRect,
|
|
const Matrix4x4* aTransform,
|
|
const ContainerLayerParameters& aIncomingScale,
|
|
ContainerLayer* aLayer,
|
|
LayerState aState,
|
|
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 relevant 3d matrix entries that are close to integers to be those
|
|
// exact integers. This protects against floating-point inaccuracies
|
|
// causing problems in the CanDraw2D / Is2D checks below.
|
|
// We don't nudge all matrix components here. In particular, we don't want to
|
|
// nudge the X/Y translation components, because those include the scroll
|
|
// offset, and we don't want scrolling to affect whether we nudge or not.
|
|
transform.NudgeTo2D();
|
|
}
|
|
Matrix transform2d;
|
|
if (aContainerFrame &&
|
|
(aState == LAYER_INACTIVE || aState == LAYER_SVG_EFFECTS) &&
|
|
(!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);
|
|
gfxSize scale;
|
|
// XXX Should we do something for 3D transforms?
|
|
if (canDraw2D && !aContainerFrame->Combines3DTransformWithAncestors()) {
|
|
// If the container's transform is animated off main thread, fix a suitable scale size
|
|
// for animation
|
|
if (aContainerItem &&
|
|
aContainerItem->GetType() == nsDisplayItem::TYPE_TRANSFORM &&
|
|
nsLayoutUtils::HasAnimationsForCompositor(
|
|
aContainerFrame, eCSSProperty_transform)) {
|
|
// 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();
|
|
nsSize displaySize;
|
|
if (widget) {
|
|
IntSize widgetSize = widget->GetClientSize();
|
|
int32_t p2a = presContext->AppUnitsPerDevPixel();
|
|
displaySize.width = NSIntPixelsToAppUnits(widgetSize.width, p2a);
|
|
displaySize.height = NSIntPixelsToAppUnits(widgetSize.height, p2a);
|
|
} else {
|
|
displaySize = presContext->GetVisibleArea().Size();
|
|
}
|
|
// compute scale using the animation on the container (ignoring
|
|
// its ancestors)
|
|
scale = nsLayoutUtils::ComputeSuitableScaleForAnimation(
|
|
aContainerFrame, aVisibleRect.Size(),
|
|
displaySize);
|
|
// multiply by the scale inherited from ancestors
|
|
scale.width *= aIncomingScale.mXScale;
|
|
scale.height *= aIncomingScale.mYScale;
|
|
} else {
|
|
// Scale factors are normalized to a power of 2 to reduce the number of resolution changes
|
|
scale = RoundToFloatPrecision(ThebesMatrix(transform2d).ScaleFactors(true));
|
|
// For frames with a changing transform that's not just a translation,
|
|
// 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::IsStyleAnimated(aDisplayListBuilder, aContainerFrame, eCSSProperty_transform) &&
|
|
aTransform &&
|
|
(!aTransform->Is2D(&frameTransform) || frameTransform.HasNonTranslationOrFlip())) {
|
|
// Don't clamp the scale factor when the new desired scale factor matches the old one
|
|
// or it was previously unscaled.
|
|
bool clamp = true;
|
|
Matrix oldFrameTransform2d;
|
|
if (aLayer->GetBaseTransform().Is2D(&oldFrameTransform2d)) {
|
|
gfxSize oldScale = RoundToFloatPrecision(ThebesMatrix(oldFrameTransform2d).ScaleFactors(true));
|
|
if (oldScale == scale || oldScale == gfxSize(1.0, 1.0)) {
|
|
clamp = false;
|
|
}
|
|
}
|
|
if (clamp) {
|
|
scale.width = gfxUtils::ClampToScaleFactor(scale.width);
|
|
scale.height = gfxUtils::ClampToScaleFactor(scale.height);
|
|
}
|
|
} else {
|
|
scale = NudgedToIntegerSize(scale);
|
|
}
|
|
}
|
|
// 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 = gfxSize(1.0, 1.0);
|
|
}
|
|
// 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 && !gfxPrefs::LayersTilesEnabled()) {
|
|
RestrictScaleToMaxLayerSize(scale, aVisibleRect, aContainerFrame, aLayer);
|
|
}
|
|
} else {
|
|
scale = gfxSize(1.0, 1.0);
|
|
}
|
|
|
|
// Store the inverse of our resolution-scale on the layer
|
|
aLayer->SetBaseTransform(transform);
|
|
aLayer->SetPreScale(1.0f/float(scale.width),
|
|
1.0f/float(scale.height));
|
|
aLayer->SetInheritedScale(aIncomingScale.mXScale,
|
|
aIncomingScale.mYScale);
|
|
|
|
aOutgoingScale =
|
|
ContainerLayerParameters(scale.width, scale.height, -offset, aIncomingScale);
|
|
if (aTransform) {
|
|
aOutgoingScale.mInTransformedSubtree = true;
|
|
if (ActiveLayerTracker::IsStyleAnimated(aDisplayListBuilder, aContainerFrame,
|
|
eCSSProperty_transform)) {
|
|
aOutgoingScale.mInActiveTransformedSubtree = true;
|
|
}
|
|
}
|
|
if ((aLayerBuilder->IsBuildingRetainedLayers() &&
|
|
(!canDraw2D || transform2d.HasNonIntegerTranslation())) ||
|
|
aContainerFrame->Extend3DContext() ||
|
|
aContainerFrame->Combines3DTransformWithAncestors()) {
|
|
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() : nsDisplayItem::TYPE_ZERO;
|
|
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);
|
|
containerLayer->SetMaskLayer(nullptr);
|
|
}
|
|
}
|
|
}
|
|
if (!containerLayer) {
|
|
// No suitable existing layer was found.
|
|
containerLayer = aManager->CreateContainerLayer();
|
|
if (!containerLayer)
|
|
return nullptr;
|
|
}
|
|
|
|
LayerState state = aContainerItem ? aContainerItem->GetLayerState(aBuilder, aManager, aParameters) : LAYER_ACTIVE;
|
|
if (state == LAYER_INACTIVE &&
|
|
nsDisplayItem::ForceActiveLayers()) {
|
|
state = LAYER_ACTIVE;
|
|
}
|
|
|
|
if (aContainerItem && state == LAYER_ACTIVE_EMPTY) {
|
|
// 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();
|
|
}
|
|
|
|
ContainerLayerParameters scaleParameters;
|
|
nsRect bounds = aChildren->GetBounds(aBuilder);
|
|
nsRect childrenVisible =
|
|
aContainerItem ? aContainerItem->GetVisibleRectForChildren() :
|
|
aContainerFrame->GetVisualOverflowRectRelativeToSelf();
|
|
if (!ChooseScaleAndSetTransform(this, aBuilder, aContainerFrame,
|
|
aContainerItem,
|
|
bounds.Intersect(childrenVisible),
|
|
aTransform, aParameters,
|
|
containerLayer, state, scaleParameters)) {
|
|
return nullptr;
|
|
}
|
|
|
|
uint32_t oldGeneration = mContainerLayerGeneration;
|
|
mContainerLayerGeneration = ++mMaxContainerLayerGeneration;
|
|
|
|
RefPtr<RefCountedRegion> paintedLayerInvalidRegion = nullptr;
|
|
if (mRetainingManager) {
|
|
if (aContainerItem) {
|
|
StoreDataForFrame(aContainerItem, containerLayer, LAYER_ACTIVE);
|
|
} else {
|
|
StoreDataForFrame(aContainerFrame, containerDisplayItemKey, containerLayer, LAYER_ACTIVE);
|
|
}
|
|
}
|
|
|
|
LayerManagerData* data = static_cast<LayerManagerData*>
|
|
(aManager->GetUserData(&gLayerManagerUserData));
|
|
|
|
nsIntRect pixBounds;
|
|
nscoord appUnitsPerDevPixel;
|
|
bool flattenToSingleLayer = false;
|
|
if ((aContainerFrame->GetStateBits() & NS_FRAME_NO_COMPONENT_ALPHA) &&
|
|
mRetainingManager &&
|
|
mRetainingManager->ShouldAvoidComponentAlphaLayers() &&
|
|
!nsLayoutUtils::AsyncPanZoomEnabled(aContainerFrame))
|
|
{
|
|
flattenToSingleLayer = true;
|
|
}
|
|
|
|
nscolor backgroundColor = NS_RGBA(0,0,0,0);
|
|
if (aFlags & CONTAINER_ALLOW_PULL_BACKGROUND_COLOR) {
|
|
backgroundColor = aParameters.mBackgroundColor;
|
|
}
|
|
|
|
uint32_t flags;
|
|
while (true) {
|
|
ContainerState state(aBuilder, aManager, aManager->GetLayerBuilder(),
|
|
aContainerFrame, aContainerItem, bounds,
|
|
containerLayer, scaleParameters, flattenToSingleLayer,
|
|
backgroundColor);
|
|
|
|
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.
|
|
bool hasComponentAlphaChildren = false;
|
|
pixBounds = state.ScaleToOutsidePixels(bounds, false);
|
|
appUnitsPerDevPixel = state.GetAppUnitsPerDevPixel();
|
|
state.Finish(&flags, data, pixBounds, aChildren, hasComponentAlphaChildren);
|
|
|
|
if (hasComponentAlphaChildren &&
|
|
!(flags & Layer::CONTENT_DISABLE_FLATTENING) &&
|
|
mRetainingManager &&
|
|
mRetainingManager->ShouldAvoidComponentAlphaLayers() &&
|
|
containerLayer->HasMultipleChildren() &&
|
|
!flattenToSingleLayer &&
|
|
!nsLayoutUtils::AsyncPanZoomEnabled(aContainerFrame))
|
|
{
|
|
// Since we don't want any component alpha layers on BasicLayers, we repeat
|
|
// the layer building process with this explicitely forced off.
|
|
// We restore the previous FrameLayerBuilder state since the first set
|
|
// of layer building will have changed it.
|
|
flattenToSingleLayer = true;
|
|
|
|
// Restore DisplayItemData
|
|
for (auto iter = data->mDisplayItems.Iter(); !iter.Done(); iter.Next()) {
|
|
DisplayItemData* data = iter.Get()->GetKey();
|
|
if (data->mUsed && data->mContainerLayerGeneration >= mContainerLayerGeneration) {
|
|
iter.Remove();
|
|
}
|
|
}
|
|
|
|
// Restore PaintedLayerItemEntries
|
|
for (auto iter = mPaintedLayerItems.Iter(); !iter.Done(); iter.Next()) {
|
|
PaintedLayerItemsEntry* entry = iter.Get();
|
|
if (entry->mContainerLayerGeneration >= mContainerLayerGeneration) {
|
|
// We can just remove these items rather than attempting to revert them
|
|
// because we're going to want to invalidate everything when transitioning
|
|
// to component alpha flattening.
|
|
iter.Remove();
|
|
continue;
|
|
}
|
|
|
|
for (uint32_t i = 0; i < entry->mItems.Length(); i++) {
|
|
if (entry->mItems[i].mContainerLayerGeneration >= mContainerLayerGeneration) {
|
|
entry->mItems.TruncateLength(i);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
aContainerFrame->AddStateBits(NS_FRAME_NO_COMPONENT_ALPHA);
|
|
continue;
|
|
}
|
|
break;
|
|
}
|
|
|
|
// 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(pixBounds);
|
|
}
|
|
if (aParameters.mLayerContentsVisibleRect) {
|
|
*aParameters.mLayerContentsVisibleRect = pixBounds + scaleParameters.mOffset;
|
|
}
|
|
|
|
mContainerLayerGeneration = oldGeneration;
|
|
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;
|
|
}
|
|
layer->SetMaskLayer(nullptr);
|
|
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 nsTArray<DisplayItemData*>* array =
|
|
static_cast<nsTArray<DisplayItemData*>*>(aFrame->Properties().Get(LayerManagerDataProperty()));
|
|
if (array) {
|
|
for (uint32_t i = 0; i < array->Length(); i++) {
|
|
AssertDisplayItemData(array->ElementAt(i))->mParent->mInvalidateAllLayers = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
/* static */
|
|
Layer*
|
|
FrameLayerBuilder::GetDedicatedLayer(nsIFrame* aFrame, uint32_t 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 nsTArray<DisplayItemData*>* array =
|
|
static_cast<nsTArray<DisplayItemData*>*>(aFrame->Properties().Get(LayerManagerDataProperty()));
|
|
if (array) {
|
|
for (uint32_t i = 0; i < array->Length(); i++) {
|
|
DisplayItemData *element = AssertDisplayItemData(array->ElementAt(i));
|
|
if (!element->mParent->mLayerManager->IsWidgetLayerManager()) {
|
|
continue;
|
|
}
|
|
if (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 gfxSize
|
|
PredictScaleForContent(nsIFrame* aFrame, nsIFrame* aAncestorWithScale,
|
|
const gfxSize& aScale)
|
|
{
|
|
Matrix4x4 transform = Matrix4x4::Scaling(aScale.width, aScale.height, 1.0);
|
|
if (aFrame != aAncestorWithScale) {
|
|
// aTransform is applied first, then the scale is applied to the result
|
|
transform = nsLayoutUtils::GetTransformToAncestor(aFrame, aAncestorWithScale)*transform;
|
|
}
|
|
Matrix transform2d;
|
|
if (transform.CanDraw2D(&transform2d)) {
|
|
return ThebesMatrix(transform2d).ScaleFactors(true);
|
|
}
|
|
return gfxSize(1.0, 1.0);
|
|
}
|
|
|
|
gfxSize
|
|
FrameLayerBuilder::GetPaintedLayerScaleForFrame(nsIFrame* aFrame)
|
|
{
|
|
MOZ_ASSERT(aFrame, "need a frame");
|
|
nsIFrame* last = nullptr;
|
|
for (nsIFrame* f = aFrame; f; f = nsLayoutUtils::GetCrossDocParentFrame(f)) {
|
|
last = f;
|
|
|
|
if (nsLayoutUtils::IsPopup(f)) {
|
|
// Don't examine ancestors of a popup. It won't make sense to check
|
|
// the transform from some content inside the popup to some content
|
|
// which is an ancestor of the popup.
|
|
break;
|
|
}
|
|
|
|
const nsTArray<DisplayItemData*>* array =
|
|
static_cast<nsTArray<DisplayItemData*>*>(f->Properties().Get(LayerManagerDataProperty()));
|
|
if (!array) {
|
|
continue;
|
|
}
|
|
|
|
for (uint32_t i = 0; i < array->Length(); i++) {
|
|
Layer* layer = AssertDisplayItemData(array->ElementAt(i))->mLayer;
|
|
ContainerLayer* container = layer->AsContainerLayer();
|
|
if (!container ||
|
|
!layer->Manager()->IsWidgetLayerManager()) {
|
|
continue;
|
|
}
|
|
for (Layer* l = container->GetFirstChild(); l; l = l->GetNextSibling()) {
|
|
PaintedDisplayItemLayerUserData* data =
|
|
static_cast<PaintedDisplayItemLayerUserData*>
|
|
(l->GetUserData(&gPaintedDisplayItemLayerUserData));
|
|
if (data) {
|
|
return PredictScaleForContent(aFrame, f, gfxSize(data->mXScale, data->mYScale));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
float presShellResolution = last->PresContext()->PresShell()->GetResolution();
|
|
return PredictScaleForContent(aFrame, last,
|
|
gfxSize(presShellResolution, presShellResolution));
|
|
}
|
|
|
|
#ifdef MOZ_DUMP_PAINTING
|
|
static void DebugPaintItem(DrawTarget& aDrawTarget,
|
|
nsPresContext* aPresContext,
|
|
nsDisplayItem *aItem,
|
|
nsDisplayListBuilder* aBuilder)
|
|
{
|
|
bool snap;
|
|
Rect bounds = NSRectToRect(aItem->GetBounds(aBuilder, &snap),
|
|
aPresContext->AppUnitsPerDevPixel());
|
|
|
|
RefPtr<DrawTarget> tempDT =
|
|
aDrawTarget.CreateSimilarDrawTarget(IntSize(bounds.width, bounds.height),
|
|
SurfaceFormat::B8G8R8A8);
|
|
RefPtr<gfxContext> context = new gfxContext(tempDT);
|
|
context->SetMatrix(gfxMatrix::Translation(-bounds.x, -bounds.y));
|
|
nsRenderingContext ctx(context);
|
|
|
|
aItem->Paint(aBuilder, &ctx);
|
|
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(nsTArray<ClippedDisplayItem>& aItems,
|
|
nsDisplayListBuilder *aBuilder,
|
|
const nsIntRegion& aRegionToDraw,
|
|
const nsIntPoint& aOffset,
|
|
int32_t aAppUnitsPerDevPixel,
|
|
float aXScale,
|
|
float aYScale)
|
|
{
|
|
uint32_t i;
|
|
// 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);
|
|
|
|
for (i = aItems.Length(); i > 0; --i) {
|
|
ClippedDisplayItem* cdi = &aItems[i - 1];
|
|
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 = newVisible;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void
|
|
FrameLayerBuilder::PaintItems(nsTArray<ClippedDisplayItem>& aItems,
|
|
const nsIntRect& aRect,
|
|
gfxContext *aContext,
|
|
nsRenderingContext *aRC,
|
|
nsDisplayListBuilder* aBuilder,
|
|
nsPresContext* aPresContext,
|
|
const nsIntPoint& aOffset,
|
|
float aXScale, float aYScale,
|
|
int32_t aCommonClipCount)
|
|
{
|
|
DrawTarget& aDrawTarget = *aRC->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);
|
|
|
|
DisplayItemClip currentClip;
|
|
bool currentClipIsSetInContext = false;
|
|
DisplayItemClip tmpClip;
|
|
|
|
for (uint32_t i = 0; i < aItems.Length(); ++i) {
|
|
ClippedDisplayItem* cdi = &aItems[i];
|
|
|
|
nsRect paintRect = cdi->mItem->GetVisibleRect().Intersect(boundRect);
|
|
if (paintRect.IsEmpty())
|
|
continue;
|
|
|
|
#ifdef MOZ_DUMP_PAINTING
|
|
PROFILER_LABEL_PRINTF("DisplayList", "Draw",
|
|
js::ProfileEntry::Category::GRAPHICS, "%s", cdi->mItem->Name());
|
|
#else
|
|
PROFILER_LABEL("DisplayList", "Draw",
|
|
js::ProfileEntry::Category::GRAPHICS);
|
|
#endif
|
|
|
|
// If the new desired clip state is different from the current state,
|
|
// update the clip.
|
|
const DisplayItemClip* clip = &cdi->mItem->GetClip();
|
|
if (clip->GetRoundedRectCount() > 0 &&
|
|
!clip->IsRectClippedByRoundedCorner(cdi->mItem->GetVisibleRect())) {
|
|
tmpClip = *clip;
|
|
tmpClip.RemoveRoundedCorners();
|
|
clip = &tmpClip;
|
|
}
|
|
if (currentClipIsSetInContext != clip->HasClip() ||
|
|
(clip->HasClip() && *clip != currentClip)) {
|
|
if (currentClipIsSetInContext) {
|
|
aContext->Restore();
|
|
}
|
|
currentClipIsSetInContext = clip->HasClip();
|
|
if (currentClipIsSetInContext) {
|
|
currentClip = *clip;
|
|
aContext->Save();
|
|
NS_ASSERTION(aCommonClipCount < 100,
|
|
"Maybe you really do have more than a hundred clipping rounded rects, or maybe something has gone wrong.");
|
|
currentClip.ApplyTo(aContext, aPresContext, aCommonClipCount);
|
|
aContext->NewPath();
|
|
}
|
|
}
|
|
|
|
if (cdi->mInactiveLayerManager) {
|
|
bool saved = aDrawTarget.GetPermitSubpixelAA();
|
|
PaintInactiveLayer(aBuilder, cdi->mInactiveLayerManager, cdi->mItem, aContext, aRC);
|
|
aDrawTarget.SetPermitSubpixelAA(saved);
|
|
} else {
|
|
nsIFrame* frame = cdi->mItem->Frame();
|
|
frame->AddStateBits(NS_FRAME_PAINTED_THEBES);
|
|
#ifdef MOZ_DUMP_PAINTING
|
|
if (gfxEnv::DumpPaintItems()) {
|
|
DebugPaintItem(aDrawTarget, aPresContext, cdi->mItem, aBuilder);
|
|
} else {
|
|
#else
|
|
{
|
|
#endif
|
|
cdi->mItem->Paint(aBuilder, aRC);
|
|
}
|
|
}
|
|
|
|
if (CheckDOMModified())
|
|
break;
|
|
}
|
|
|
|
if (currentClipIsSetInContext) {
|
|
aContext->Restore();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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(gfxContext* aContext, DrawRegionClip aClip)
|
|
{
|
|
if (!gfxPrefs::LayoutPaintRectsSeparately() ||
|
|
aClip == DrawRegionClip::NONE) {
|
|
return false;
|
|
}
|
|
|
|
DrawTarget *dt = aContext->GetDrawTarget();
|
|
return !dt->SupportsRegionClipping();
|
|
}
|
|
|
|
static void DrawForcedBackgroundColor(DrawTarget& aDrawTarget,
|
|
Layer* aLayer, nscolor
|
|
aBackgroundColor)
|
|
{
|
|
if (NS_GET_A(aBackgroundColor) > 0) {
|
|
nsIntRect r = aLayer->GetVisibleRegion().GetBounds();
|
|
ColorPattern color(ToDeviceColor(aBackgroundColor));
|
|
aDrawTarget.FillRect(Rect(r.x, r.y, r.width, r.height), 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();
|
|
|
|
PROFILER_LABEL("FrameLayerBuilder", "DrawPaintedLayer",
|
|
js::ProfileEntry::Category::GRAPHICS);
|
|
|
|
nsDisplayListBuilder* builder = static_cast<nsDisplayListBuilder*>
|
|
(aCallbackData);
|
|
|
|
FrameLayerBuilder *layerBuilder = aLayer->Manager()->GetLayerBuilder();
|
|
NS_ASSERTION(layerBuilder, "Unexpectedly null layer builder!");
|
|
|
|
if (layerBuilder->CheckDOMModified())
|
|
return;
|
|
|
|
PaintedLayerItemsEntry* entry = layerBuilder->mPaintedLayerItems.GetEntry(aLayer);
|
|
NS_ASSERTION(entry, "We shouldn't be drawing into a layer with no items!");
|
|
if (!entry->mContainerLayerFrame) {
|
|
return;
|
|
}
|
|
|
|
|
|
PaintedDisplayItemLayerUserData* userData =
|
|
static_cast<PaintedDisplayItemLayerUserData*>
|
|
(aLayer->GetUserData(&gPaintedDisplayItemLayerUserData));
|
|
NS_ASSERTION(userData, "where did our user data go?");
|
|
|
|
bool shouldDrawRectsSeparately = ShouldDrawRectsSeparately(aContext, aClip);
|
|
|
|
if (!shouldDrawRectsSeparately) {
|
|
if (aClip == DrawRegionClip::DRAW) {
|
|
gfxUtils::ClipToRegion(aContext, aRegionToDraw);
|
|
}
|
|
|
|
DrawForcedBackgroundColor(aDrawTarget, aLayer,
|
|
userData->mForcedBackgroundColor);
|
|
}
|
|
|
|
if (NS_GET_A(userData->mFontSmoothingBackgroundColor) > 0) {
|
|
aContext->SetFontSmoothingBackgroundColor(
|
|
Color::FromABGR(userData->mFontSmoothingBackgroundColor));
|
|
}
|
|
|
|
// make the origin of the context coincide with the origin of the
|
|
// PaintedLayer
|
|
gfxContextMatrixAutoSaveRestore saveMatrix(aContext);
|
|
nsIntPoint offset = GetTranslationForPaintedLayer(aLayer);
|
|
nsPresContext* presContext = entry->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(entry->mItems, builder, aDirtyRegion,
|
|
offset, appUnitsPerDevPixel,
|
|
userData->mXScale, userData->mYScale);
|
|
userData->mVisibilityComputedRegion = aDirtyRegion;
|
|
}
|
|
|
|
nsRenderingContext rc(aContext);
|
|
|
|
if (shouldDrawRectsSeparately) {
|
|
nsIntRegionRectIterator it(aRegionToDraw);
|
|
while (const nsIntRect* iterRect = it.Next()) {
|
|
gfxContextAutoSaveRestore save(aContext);
|
|
aContext->NewPath();
|
|
aContext->Rectangle(*iterRect);
|
|
aContext->Clip();
|
|
|
|
DrawForcedBackgroundColor(aDrawTarget, aLayer,
|
|
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->SetMatrix(
|
|
aContext->CurrentMatrix().Translate(aLayer->GetResidualTranslation() - gfxPoint(offset.x, offset.y)).
|
|
Scale(userData->mXScale, userData->mYScale));
|
|
|
|
layerBuilder->PaintItems(entry->mItems, *iterRect, aContext, &rc,
|
|
builder, presContext,
|
|
offset, userData->mXScale, userData->mYScale,
|
|
entry->mCommonClipCount);
|
|
}
|
|
} 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->SetMatrix(
|
|
aContext->CurrentMatrix().Translate(aLayer->GetResidualTranslation() - gfxPoint(offset.x, offset.y)).
|
|
Scale(userData->mXScale,userData->mYScale));
|
|
|
|
layerBuilder->PaintItems(entry->mItems, aRegionToDraw.GetBounds(), aContext, &rc,
|
|
builder, presContext,
|
|
offset, userData->mXScale, userData->mYScale,
|
|
entry->mCommonClipCount);
|
|
}
|
|
|
|
aContext->SetFontSmoothingBackgroundColor(Color());
|
|
|
|
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 && presContext->GetDocShell() && isActiveLayerManager) {
|
|
nsDocShell* docShell = static_cast<nsDocShell*>(presContext->GetDocShell());
|
|
RefPtr<TimelineConsumers> timelines = TimelineConsumers::Get();
|
|
|
|
if (timelines && timelines->HasConsumer(docShell)) {
|
|
timelines->AddMarkerForDocShell(docShell, Move(
|
|
MakeUnique<LayerTimelineMarker>(aRegionToDraw)));
|
|
}
|
|
}
|
|
|
|
if (!aRegionToInvalidate.IsEmpty()) {
|
|
aLayer->AddInvalidRect(aRegionToInvalidate.GetBounds());
|
|
}
|
|
}
|
|
|
|
bool
|
|
FrameLayerBuilder::CheckDOMModified()
|
|
{
|
|
if (!mRootPresContext ||
|
|
mInitialDOMGeneration == mRootPresContext->GetDOMGeneration())
|
|
return false;
|
|
if (mDetectedDOMModification) {
|
|
// Don't spam the console with extra warnings
|
|
return true;
|
|
}
|
|
mDetectedDOMModification = true;
|
|
// Painting is not going to complete properly. There's not much
|
|
// we can do here though. Invalidating the window to get another repaint
|
|
// is likely to lead to an infinite repaint loop.
|
|
NS_WARNING("Detected DOM modification during paint, bailing out!");
|
|
return true;
|
|
}
|
|
|
|
/* static */ void
|
|
FrameLayerBuilder::DumpRetainedLayerTree(LayerManager* aManager, std::stringstream& aStream, bool aDumpHtml)
|
|
{
|
|
aManager->Dump(aStream, "", aDumpHtml);
|
|
}
|
|
|
|
nsDisplayItemGeometry*
|
|
FrameLayerBuilder::GetMostRecentGeometry(nsDisplayItem* aItem)
|
|
{
|
|
typedef nsTArray<DisplayItemData*> DataArray;
|
|
|
|
// Retrieve the array of DisplayItemData associated with our frame.
|
|
FrameProperties properties = aItem->Frame()->Properties();
|
|
const DataArray* dataArray =
|
|
static_cast<DataArray*>(properties.Get(LayerManagerDataProperty()));
|
|
if (!dataArray) {
|
|
return nullptr;
|
|
}
|
|
|
|
// Find our display item data, if it exists, and return its geometry.
|
|
uint32_t itemPerFrameKey = aItem->GetPerFrameKey();
|
|
for (uint32_t i = 0; i < dataArray->Length(); i++) {
|
|
DisplayItemData* data = AssertDisplayItemData(dataArray->ElementAt(i));
|
|
if (data->GetDisplayItemKey() == itemPerFrameKey) {
|
|
return data->GetGeometry();
|
|
}
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
gfx::Rect
|
|
CalculateBounds(const nsTArray<DisplayItemClip::RoundedRect>& aRects, int32_t A2D)
|
|
{
|
|
nsRect bounds = aRects[0].mRect;
|
|
for (uint32_t i = 1; i < aRects.Length(); ++i) {
|
|
bounds.UnionRect(bounds, aRects[i].mRect);
|
|
}
|
|
|
|
return gfx::ToRect(nsLayoutUtils::RectToGfxRect(bounds, A2D));
|
|
}
|
|
|
|
static void
|
|
SetClipCount(PaintedDisplayItemLayerUserData* apaintedData,
|
|
uint32_t aClipCount)
|
|
{
|
|
if (apaintedData) {
|
|
apaintedData->mMaskClipCount = aClipCount;
|
|
}
|
|
}
|
|
|
|
void
|
|
ContainerState::SetupMaskLayer(Layer *aLayer,
|
|
const DisplayItemClip& aClip,
|
|
const nsIntRegion& aLayerVisibleRegion,
|
|
uint32_t aRoundedRectClipCount)
|
|
{
|
|
// if the number of clips we are going to mask has decreased, then aLayer might have
|
|
// cached graphics which assume the existence of a soon-to-be non-existent mask layer
|
|
// in that case, invalidate the whole layer.
|
|
PaintedDisplayItemLayerUserData* paintedData = GetPaintedDisplayItemLayerUserData(aLayer);
|
|
if (paintedData &&
|
|
aRoundedRectClipCount < paintedData->mMaskClipCount) {
|
|
PaintedLayer* painted = aLayer->AsPaintedLayer();
|
|
painted->InvalidateRegion(painted->GetValidRegion().GetBounds());
|
|
}
|
|
|
|
// don't build an unnecessary mask
|
|
nsIntRect layerBounds = aLayerVisibleRegion.GetBounds();
|
|
if (aClip.GetRoundedRectCount() == 0 ||
|
|
aRoundedRectClipCount == 0 ||
|
|
layerBounds.IsEmpty()) {
|
|
SetClipCount(paintedData, 0);
|
|
return;
|
|
}
|
|
|
|
RefPtr<Layer> maskLayer =
|
|
CreateMaskLayer(aLayer, aClip, aLayerVisibleRegion, Nothing(), aRoundedRectClipCount);
|
|
|
|
if (!maskLayer) {
|
|
SetClipCount(paintedData, 0);
|
|
return;
|
|
}
|
|
|
|
aLayer->SetMaskLayer(maskLayer);
|
|
SetClipCount(paintedData, aRoundedRectClipCount);
|
|
}
|
|
|
|
already_AddRefed<Layer>
|
|
ContainerState::CreateMaskLayer(Layer *aLayer,
|
|
const DisplayItemClip& aClip,
|
|
const nsIntRegion& aLayerVisibleRegion,
|
|
const Maybe<size_t>& aForAncestorMaskLayer,
|
|
uint32_t aRoundedRectClipCount)
|
|
{
|
|
// check if we can re-use the mask layer
|
|
MaskLayerKey recycleKey(aLayer, aForAncestorMaskLayer);
|
|
RefPtr<ImageLayer> maskLayer = CreateOrRecycleMaskImageLayerFor(recycleKey);
|
|
MaskLayerUserData* userData = GetMaskLayerUserData(maskLayer);
|
|
|
|
MaskLayerUserData newData;
|
|
aClip.AppendRoundedRects(&newData.mRoundedClipRects, aRoundedRectClipCount);
|
|
newData.mScaleX = mParameters.mXScale;
|
|
newData.mScaleY = mParameters.mYScale;
|
|
newData.mOffset = mParameters.mOffset;
|
|
newData.mAppUnitsPerDevPixel = mContainerFrame->PresContext()->AppUnitsPerDevPixel();
|
|
|
|
if (*userData == newData) {
|
|
return maskLayer.forget();
|
|
}
|
|
|
|
// calculate a more precise bounding rect
|
|
gfx::Rect boundingRect = CalculateBounds(newData.mRoundedClipRects,
|
|
newData.mAppUnitsPerDevPixel);
|
|
boundingRect.Scale(mParameters.mXScale, mParameters.mYScale);
|
|
|
|
uint32_t maxSize = mManager->GetMaxTextureSize();
|
|
NS_ASSERTION(maxSize > 0, "Invalid max texture size");
|
|
gfx::Size surfaceSize(std::min<gfx::Float>(boundingRect.Width(), maxSize),
|
|
std::min<gfx::Float>(boundingRect.Height(), maxSize));
|
|
|
|
// 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());
|
|
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);
|
|
}
|
|
|
|
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
|
|
RefPtr<DrawTarget> dt =
|
|
aLayer->Manager()->CreateOptimalMaskDrawTarget(surfaceSizeInt);
|
|
|
|
// fail if we can't get the right surface
|
|
if (!dt) {
|
|
NS_WARNING("Could not create DrawTarget for mask layer.");
|
|
return nullptr;
|
|
}
|
|
|
|
RefPtr<gfxContext> context = new gfxContext(dt);
|
|
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,
|
|
0,
|
|
aRoundedRectClipCount);
|
|
|
|
RefPtr<SourceSurface> surface = dt->Snapshot();
|
|
|
|
// build the image and container
|
|
container = aLayer->Manager()->CreateImageContainer();
|
|
NS_ASSERTION(container, "Could not create image container for mask layer.");
|
|
RefPtr<Image> image = container->CreateImage(ImageFormat::CAIRO_SURFACE);
|
|
NS_ASSERTION(image, "Could not create image container for mask layer.");
|
|
CairoImage::Data data;
|
|
data.mSize = surfaceSizeInt;
|
|
data.mSourceSurface = surface;
|
|
|
|
static_cast<CairoImage*>(image.get())->SetData(data);
|
|
container->SetCurrentImageInTransaction(image);
|
|
|
|
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->mScaleX = newData.mScaleX;
|
|
userData->mScaleY = newData.mScaleY;
|
|
userData->mOffset = newData.mOffset;
|
|
userData->mAppUnitsPerDevPixel = newData.mAppUnitsPerDevPixel;
|
|
userData->mRoundedClipRects.SwapElements(newData.mRoundedClipRects);
|
|
userData->mImageKey.Reset(lookupKey);
|
|
|
|
return maskLayer.forget();
|
|
}
|
|
|
|
} // namespace mozilla
|