forked from mirrors/gecko-dev
30535df923
We only set lazilySetParentPointer on the first reflow, then only call DrainSelfOverflowListInternal on non-first reflows. MozReview-Commit-ID: 364IwDoPE3W --HG-- extra : rebase_source : 6551f2a3bbe080582de525f4c095bc60868c1a49
223 lines
8 KiB
C++
223 lines
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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/* rendering object for CSS display:inline objects */
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#ifndef nsInlineFrame_h___
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#define nsInlineFrame_h___
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#include "mozilla/Attributes.h"
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#include "nsContainerFrame.h"
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class nsLineLayout;
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/**
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* Inline frame class.
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*
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* This class manages a list of child frames that are inline frames. Working with
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* nsLineLayout, the class will reflow and place inline frames on a line.
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*/
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class nsInlineFrame : public nsContainerFrame
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{
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public:
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NS_DECL_QUERYFRAME
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NS_DECL_FRAMEARENA_HELPERS(nsInlineFrame)
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friend nsInlineFrame* NS_NewInlineFrame(nsIPresShell* aPresShell,
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ComputedStyle* aStyle);
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// nsIFrame overrides
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virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsDisplayListSet& aLists) override;
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#ifdef ACCESSIBILITY
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virtual mozilla::a11y::AccType AccessibleType() override;
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#endif
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#ifdef DEBUG_FRAME_DUMP
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virtual nsresult GetFrameName(nsAString& aResult) const override;
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#endif
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virtual bool IsFrameOfType(uint32_t aFlags) const override
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{
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if (aFlags & eSupportsCSSTransforms) {
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return false;
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}
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return nsContainerFrame::IsFrameOfType(aFlags &
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~(nsIFrame::eBidiInlineContainer | nsIFrame::eLineParticipant));
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}
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virtual void InvalidateFrame(uint32_t aDisplayItemKey = 0, bool aRebuildDisplayItems = true) override;
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virtual void InvalidateFrameWithRect(const nsRect& aRect, uint32_t aDisplayItemKey = 0, bool aRebuildDisplayItems = true) override;
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virtual bool IsEmpty() override;
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virtual bool IsSelfEmpty() override;
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virtual FrameSearchResult
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PeekOffsetCharacter(bool aForward, int32_t* aOffset,
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PeekOffsetCharacterOptions aOptions =
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PeekOffsetCharacterOptions()) override;
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virtual void DestroyFrom(nsIFrame* aDestructRoot, PostDestroyData& aPostDestroyData) override;
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virtual nsresult StealFrame(nsIFrame* aChild) override;
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// nsIHTMLReflow overrides
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virtual void AddInlineMinISize(gfxContext *aRenderingContext,
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InlineMinISizeData *aData) override;
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virtual void AddInlinePrefISize(gfxContext *aRenderingContext,
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InlinePrefISizeData *aData) override;
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virtual mozilla::LogicalSize
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ComputeSize(gfxContext *aRenderingContext,
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mozilla::WritingMode aWritingMode,
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const mozilla::LogicalSize& aCBSize,
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nscoord aAvailableISize,
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const mozilla::LogicalSize& aMargin,
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const mozilla::LogicalSize& aBorder,
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const mozilla::LogicalSize& aPadding,
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ComputeSizeFlags aFlags) override;
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virtual nsRect ComputeTightBounds(DrawTarget* aDrawTarget) const override;
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virtual void Reflow(nsPresContext* aPresContext,
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ReflowOutput& aDesiredSize,
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const ReflowInput& aReflowInput,
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nsReflowStatus& aStatus) override;
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virtual nsresult AttributeChanged(int32_t aNameSpaceID,
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nsAtom* aAttribute,
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int32_t aModType) override;
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virtual bool CanContinueTextRun() const override;
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virtual void PullOverflowsFromPrevInFlow() override;
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virtual nscoord GetLogicalBaseline(mozilla::WritingMode aWritingMode) const override;
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virtual bool DrainSelfOverflowList() override;
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/**
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* Return true if the frame is first visual frame or first continuation
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*/
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bool IsFirst() const {
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// If the frame's bidi visual state is set, return is-first state
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// else return true if it's the first continuation.
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return (GetStateBits() & NS_INLINE_FRAME_BIDI_VISUAL_STATE_IS_SET)
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? !!(GetStateBits() & NS_INLINE_FRAME_BIDI_VISUAL_IS_FIRST)
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: (!GetPrevInFlow());
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}
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/**
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* Return true if the frame is last visual frame or last continuation.
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*/
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bool IsLast() const {
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// If the frame's bidi visual state is set, return is-last state
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// else return true if it's the last continuation.
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return (GetStateBits() & NS_INLINE_FRAME_BIDI_VISUAL_STATE_IS_SET)
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? !!(GetStateBits() & NS_INLINE_FRAME_BIDI_VISUAL_IS_LAST)
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: (!GetNextInFlow());
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}
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// Restyles the block wrappers around our non-inline-outside kids.
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// This will only be called when such wrappers in fact exist.
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void UpdateStyleOfOwnedAnonBoxesForIBSplit(
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mozilla::ServoRestyleState& aRestyleState);
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protected:
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// Additional reflow state used during our reflow methods
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struct InlineReflowInput {
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nsIFrame* mPrevFrame;
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nsInlineFrame* mNextInFlow;
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nsIFrame* mLineContainer;
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nsLineLayout* mLineLayout;
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bool mSetParentPointer; // when reflowing child frame first set its
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// parent frame pointer
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InlineReflowInput() {
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mPrevFrame = nullptr;
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mNextInFlow = nullptr;
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mLineContainer = nullptr;
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mLineLayout = nullptr;
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mSetParentPointer = false;
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}
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};
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nsInlineFrame(ComputedStyle* aStyle, ClassID aID)
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: nsContainerFrame(aStyle, aID)
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, mBaseline(NS_INTRINSIC_WIDTH_UNKNOWN)
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{}
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virtual LogicalSides GetLogicalSkipSides(const ReflowInput* aReflowInput = nullptr) const override;
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void ReflowFrames(nsPresContext* aPresContext,
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const ReflowInput& aReflowInput,
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InlineReflowInput& rs,
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ReflowOutput& aMetrics,
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nsReflowStatus& aStatus);
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void ReflowInlineFrame(nsPresContext* aPresContext,
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const ReflowInput& aReflowInput,
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InlineReflowInput& rs,
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nsIFrame* aFrame,
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nsReflowStatus& aStatus);
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virtual nsIFrame* PullOneFrame(nsPresContext* aPresContext,
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InlineReflowInput& rs,
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bool* aIsComplete);
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virtual void PushFrames(nsPresContext* aPresContext,
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nsIFrame* aFromChild,
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nsIFrame* aPrevSibling,
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InlineReflowInput& aState);
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private:
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explicit nsInlineFrame(ComputedStyle* aStyle)
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: nsInlineFrame(aStyle, kClassID)
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{}
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/**
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* Move any frames on our overflow list to the end of our principal list.
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* @param aInFirstLine whether we're in a first-line frame.
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* @return true if there were any overflow frames
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*/
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bool DrainSelfOverflowListInternal(bool aInFirstLine);
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protected:
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nscoord mBaseline;
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};
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//----------------------------------------------------------------------
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/**
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* Variation on inline-frame used to manage lines for line layout in
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* special situations (:first-line style in particular).
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*/
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class nsFirstLineFrame final : public nsInlineFrame {
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public:
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NS_DECL_FRAMEARENA_HELPERS(nsFirstLineFrame)
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friend nsFirstLineFrame* NS_NewFirstLineFrame(nsIPresShell* aPresShell,
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ComputedStyle* aStyle);
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#ifdef DEBUG_FRAME_DUMP
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virtual nsresult GetFrameName(nsAString& aResult) const override;
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#endif
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virtual void Reflow(nsPresContext* aPresContext,
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ReflowOutput& aDesiredSize,
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const ReflowInput& aReflowInput,
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nsReflowStatus& aStatus) override;
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virtual void Init(nsIContent* aContent,
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nsContainerFrame* aParent,
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nsIFrame* aPrevInFlow) override;
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virtual void PullOverflowsFromPrevInFlow() override;
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virtual bool DrainSelfOverflowList() override;
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protected:
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explicit nsFirstLineFrame(ComputedStyle* aStyle)
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: nsInlineFrame(aStyle, kClassID)
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{}
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virtual nsIFrame* PullOneFrame(nsPresContext* aPresContext,
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InlineReflowInput& rs,
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bool* aIsComplete) override;
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};
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#endif /* nsInlineFrame_h___ */
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