зеркало из https://github.com/mozilla/gecko-dev.git
86 строки
2.8 KiB
C++
86 строки
2.8 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef RETAINEDDISPLAYLISTBUILDER_H_
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#define RETAINEDDISPLAYLISTBUILDER_H_
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#include "nsDisplayList.h"
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#include "mozilla/Maybe.h"
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namespace mozilla {
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class DisplayListChecker;
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} // namespace mozilla
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struct RetainedDisplayListBuilder
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{
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RetainedDisplayListBuilder(nsIFrame* aReferenceFrame,
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nsDisplayListBuilderMode aMode,
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bool aBuildCaret)
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: mBuilder(aReferenceFrame, aMode, aBuildCaret, true)
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{
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}
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~RetainedDisplayListBuilder() { mList.DeleteAll(&mBuilder); }
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nsDisplayListBuilder* Builder() { return &mBuilder; }
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nsDisplayList* List() { return &mList; }
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enum class PartialUpdateResult
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{
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Failed,
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NoChange,
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Updated
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};
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PartialUpdateResult AttemptPartialUpdate(
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nscolor aBackstop,
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mozilla::DisplayListChecker* aChecker);
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/**
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* Iterates through the display list builder reference frame document and
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* subdocuments, and clears the modified frame lists from the root frames.
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* Also clears the frame properties set by RetainedDisplayListBuilder for all
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* the frames in the modified frame lists.
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*/
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void ClearFramesWithProps();
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NS_DECLARE_FRAME_PROPERTY_DELETABLE(Cached, RetainedDisplayListBuilder)
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private:
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bool PreProcessDisplayList(RetainedDisplayList* aList,
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AnimatedGeometryRoot* aAGR,
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uint32_t aCallerKey = 0,
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uint32_t aNestingDepth = 0);
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bool MergeDisplayLists(
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nsDisplayList* aNewList,
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RetainedDisplayList* aOldList,
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RetainedDisplayList* aOutList,
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mozilla::Maybe<const mozilla::ActiveScrolledRoot*>& aOutContainerASR,
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uint32_t aOuterKey = 0);
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bool ComputeRebuildRegion(nsTArray<nsIFrame*>& aModifiedFrames,
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nsRect* aOutDirty,
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AnimatedGeometryRoot** aOutModifiedAGR,
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nsTArray<nsIFrame*>& aOutFramesWithProps);
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bool ProcessFrame(nsIFrame* aFrame,
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nsDisplayListBuilder& aBuilder,
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nsIFrame* aStopAtFrame,
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nsTArray<nsIFrame*>& aOutFramesWithProps,
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const bool aStopAtStackingContext,
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nsRect* aOutDirty,
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AnimatedGeometryRoot** aOutModifiedAGR);
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void IncrementSubDocPresShellPaintCount(nsDisplayItem* aItem);
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friend class MergeState;
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nsDisplayListBuilder mBuilder;
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RetainedDisplayList mList;
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WeakFrame mPreviousCaret;
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};
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#endif // RETAINEDDISPLAYLISTBUILDER_H_
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