mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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2124e37b3a
We're keeping the core idea that, before we remove the frames-to-be-destroyed from the continuation chain, their textruns need to be disconnected/destroyed. However, nsContinuingTextFrame::DestroyFrom tries to optimize when the destroying frames that aren't mentioned in the userdata for the textrun, and certain other conditions are met; we need a similar optimization here. It's simpler here because the other conditions are definitely met, since all the text for the frames being deleted has already been consumed and reflowed by previous frames. We don't need the TEXT_STYLE_MATCHES_PREV_CONTINUATION state bit anymore because nsContinuingTextFrame::DestroyFrom will never see any textruns when called via RemoveEmptyInFlows. --HG-- extra : rebase_source : 6544f923499ef604d48ec15961716549dd25d279
707 lines
29 KiB
C++
707 lines
29 KiB
C++
/* -*- Mode: C++; tab-width: 2; 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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#ifndef nsTextFrame_h__
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#define nsTextFrame_h__
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#include "mozilla/Attributes.h"
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#include "nsFrame.h"
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#include "nsSplittableFrame.h"
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#include "nsLineBox.h"
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#include "gfxFont.h"
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#include "gfxSkipChars.h"
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#include "nsDisplayList.h"
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class nsTextPaintStyle;
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class PropertyProvider;
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typedef nsFrame nsTextFrameBase;
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class nsDisplayTextGeometry;
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class nsDisplayText;
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class nsTextFrameTextRunCache {
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public:
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static void Init();
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static void Shutdown();
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};
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class nsTextFrame : public nsTextFrameBase {
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public:
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NS_DECL_QUERYFRAME_TARGET(nsTextFrame)
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NS_DECL_FRAMEARENA_HELPERS
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friend class nsContinuingTextFrame;
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friend class nsDisplayTextGeometry;
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friend class nsDisplayText;
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nsTextFrame(nsStyleContext* aContext)
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: nsTextFrameBase(aContext)
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{
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NS_ASSERTION(mContentOffset == 0, "Bogus content offset");
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}
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// nsQueryFrame
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NS_DECL_QUERYFRAME
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// nsIFrame
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virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsRect& aDirtyRect,
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const nsDisplayListSet& aLists) MOZ_OVERRIDE;
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virtual void Init(nsIContent* aContent,
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nsContainerFrame* aParent,
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nsIFrame* aPrevInFlow) MOZ_OVERRIDE;
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virtual void DestroyFrom(nsIFrame* aDestructRoot) MOZ_OVERRIDE;
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virtual nsresult GetCursor(const nsPoint& aPoint,
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nsIFrame::Cursor& aCursor) MOZ_OVERRIDE;
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virtual nsresult CharacterDataChanged(CharacterDataChangeInfo* aInfo) MOZ_OVERRIDE;
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virtual void DidSetStyleContext(nsStyleContext* aOldStyleContext) MOZ_OVERRIDE;
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virtual nsIFrame* GetNextContinuation() const MOZ_OVERRIDE {
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return mNextContinuation;
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}
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virtual void SetNextContinuation(nsIFrame* aNextContinuation) MOZ_OVERRIDE {
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NS_ASSERTION (!aNextContinuation || GetType() == aNextContinuation->GetType(),
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"setting a next continuation with incorrect type!");
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NS_ASSERTION (!nsSplittableFrame::IsInNextContinuationChain(aNextContinuation, this),
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"creating a loop in continuation chain!");
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mNextContinuation = aNextContinuation;
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if (aNextContinuation)
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aNextContinuation->RemoveStateBits(NS_FRAME_IS_FLUID_CONTINUATION);
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}
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virtual nsIFrame* GetNextInFlowVirtual() const MOZ_OVERRIDE { return GetNextInFlow(); }
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nsIFrame* GetNextInFlow() const {
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return mNextContinuation && (mNextContinuation->GetStateBits() & NS_FRAME_IS_FLUID_CONTINUATION) ?
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mNextContinuation : nullptr;
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}
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virtual void SetNextInFlow(nsIFrame* aNextInFlow) MOZ_OVERRIDE {
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NS_ASSERTION (!aNextInFlow || GetType() == aNextInFlow->GetType(),
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"setting a next in flow with incorrect type!");
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NS_ASSERTION (!nsSplittableFrame::IsInNextContinuationChain(aNextInFlow, this),
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"creating a loop in continuation chain!");
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mNextContinuation = aNextInFlow;
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if (aNextInFlow)
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aNextInFlow->AddStateBits(NS_FRAME_IS_FLUID_CONTINUATION);
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}
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virtual nsIFrame* LastInFlow() const MOZ_OVERRIDE;
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virtual nsIFrame* LastContinuation() const MOZ_OVERRIDE;
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virtual nsSplittableType GetSplittableType() const MOZ_OVERRIDE {
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return NS_FRAME_SPLITTABLE;
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}
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/**
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* Get the "type" of the frame
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*
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* @see nsGkAtoms::textFrame
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*/
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virtual nsIAtom* GetType() const MOZ_OVERRIDE;
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virtual bool IsFrameOfType(uint32_t aFlags) const MOZ_OVERRIDE
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{
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// Set the frame state bit for text frames to mark them as replaced.
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// XXX kipp: temporary
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return nsFrame::IsFrameOfType(aFlags & ~(nsIFrame::eReplaced |
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nsIFrame::eLineParticipant));
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}
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virtual void InvalidateFrame(uint32_t aDisplayItemKey = 0) MOZ_OVERRIDE;
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virtual void InvalidateFrameWithRect(const nsRect& aRect, uint32_t aDisplayItemKey = 0) MOZ_OVERRIDE;
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#ifdef DEBUG_FRAME_DUMP
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void List(FILE* out = stderr, const char* aPrefix = "", uint32_t aFlags = 0) const MOZ_OVERRIDE;
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virtual nsresult GetFrameName(nsAString& aResult) const MOZ_OVERRIDE;
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void ToCString(nsCString& aBuf, int32_t* aTotalContentLength) const;
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#endif
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#ifdef DEBUG
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virtual nsFrameState GetDebugStateBits() const MOZ_OVERRIDE;
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#endif
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virtual ContentOffsets CalcContentOffsetsFromFramePoint(nsPoint aPoint) MOZ_OVERRIDE;
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ContentOffsets GetCharacterOffsetAtFramePoint(const nsPoint &aPoint);
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/**
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* This is called only on the primary text frame. It indicates that
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* the selection state of the given character range has changed.
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* Text in the range is unconditionally invalidated
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* (Selection::Repaint depends on this).
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* @param aSelected true if the selection has been added to the range,
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* false otherwise
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* @param aType the type of selection added or removed
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*/
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void SetSelectedRange(uint32_t aStart, uint32_t aEnd, bool aSelected,
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SelectionType aType);
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virtual FrameSearchResult PeekOffsetNoAmount(bool aForward, int32_t* aOffset) MOZ_OVERRIDE;
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virtual FrameSearchResult PeekOffsetCharacter(bool aForward, int32_t* aOffset,
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bool aRespectClusters = true) MOZ_OVERRIDE;
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virtual FrameSearchResult PeekOffsetWord(bool aForward, bool aWordSelectEatSpace, bool aIsKeyboardSelect,
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int32_t* aOffset, PeekWordState* aState) MOZ_OVERRIDE;
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virtual nsresult CheckVisibility(nsPresContext* aContext, int32_t aStartIndex, int32_t aEndIndex, bool aRecurse, bool *aFinished, bool *_retval) MOZ_OVERRIDE;
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// Flags for aSetLengthFlags
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enum { ALLOW_FRAME_CREATION_AND_DESTRUCTION = 0x01 };
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// Update offsets to account for new length. This may clear mTextRun.
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void SetLength(int32_t aLength, nsLineLayout* aLineLayout,
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uint32_t aSetLengthFlags = 0);
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virtual nsresult GetOffsets(int32_t &start, int32_t &end)const MOZ_OVERRIDE;
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virtual void AdjustOffsetsForBidi(int32_t start, int32_t end) MOZ_OVERRIDE;
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virtual nsresult GetPointFromOffset(int32_t inOffset,
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nsPoint* outPoint) MOZ_OVERRIDE;
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virtual nsresult GetChildFrameContainingOffset(int32_t inContentOffset,
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bool inHint,
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int32_t* outFrameContentOffset,
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nsIFrame** outChildFrame) MOZ_OVERRIDE;
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virtual bool IsVisibleInSelection(nsISelection* aSelection) MOZ_OVERRIDE;
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virtual bool IsEmpty() MOZ_OVERRIDE;
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virtual bool IsSelfEmpty() MOZ_OVERRIDE { return IsEmpty(); }
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virtual nscoord GetBaseline() const MOZ_OVERRIDE;
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virtual bool HasSignificantTerminalNewline() const MOZ_OVERRIDE;
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/**
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* Returns true if this text frame is logically adjacent to the end of the
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* line.
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*/
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bool IsAtEndOfLine() const;
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/**
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* Call this only after reflow the frame. Returns true if non-collapsed
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* characters are present.
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*/
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bool HasNoncollapsedCharacters() const {
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return (GetStateBits() & TEXT_HAS_NONCOLLAPSED_CHARACTERS) != 0;
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}
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#ifdef ACCESSIBILITY
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virtual mozilla::a11y::AccType AccessibleType() MOZ_OVERRIDE;
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#endif
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float GetFontSizeInflation() const;
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bool IsCurrentFontInflation(float aInflation) const;
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bool HasFontSizeInflation() const {
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return (GetStateBits() & TEXT_HAS_FONT_INFLATION) != 0;
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}
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void SetFontSizeInflation(float aInflation);
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virtual void MarkIntrinsicWidthsDirty() MOZ_OVERRIDE;
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virtual nscoord GetMinWidth(nsRenderingContext *aRenderingContext) MOZ_OVERRIDE;
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virtual nscoord GetPrefWidth(nsRenderingContext *aRenderingContext) MOZ_OVERRIDE;
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virtual void AddInlineMinWidth(nsRenderingContext *aRenderingContext,
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InlineMinWidthData *aData) MOZ_OVERRIDE;
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virtual void AddInlinePrefWidth(nsRenderingContext *aRenderingContext,
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InlinePrefWidthData *aData) MOZ_OVERRIDE;
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virtual nsSize ComputeSize(nsRenderingContext *aRenderingContext,
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nsSize aCBSize, nscoord aAvailableWidth,
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nsSize aMargin, nsSize aBorder, nsSize aPadding,
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uint32_t aFlags) MOZ_OVERRIDE;
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virtual nsRect ComputeTightBounds(gfxContext* aContext) const MOZ_OVERRIDE;
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virtual nsresult GetPrefWidthTightBounds(nsRenderingContext* aContext,
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nscoord* aX,
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nscoord* aXMost) MOZ_OVERRIDE;
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virtual void Reflow(nsPresContext* aPresContext,
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nsHTMLReflowMetrics& aMetrics,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus) MOZ_OVERRIDE;
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virtual bool CanContinueTextRun() const MOZ_OVERRIDE;
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// Method that is called for a text frame that is logically
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// adjacent to the end of the line (i.e. followed only by empty text frames,
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// placeholders or inlines containing such).
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struct TrimOutput {
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// true if we trimmed some space or changed metrics in some other way.
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// In this case, we should call RecomputeOverflow on this frame.
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bool mChanged;
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// true if the last character is not justifiable so should be subtracted
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// from the count of justifiable characters in the frame, since the last
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// character in a line is not justifiable.
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bool mLastCharIsJustifiable;
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// an amount to *subtract* from the frame's width (zero if !mChanged)
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nscoord mDeltaWidth;
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};
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TrimOutput TrimTrailingWhiteSpace(nsRenderingContext* aRC);
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virtual nsresult GetRenderedText(nsAString* aString = nullptr,
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gfxSkipChars* aSkipChars = nullptr,
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gfxSkipCharsIterator* aSkipIter = nullptr,
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uint32_t aSkippedStartOffset = 0,
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uint32_t aSkippedMaxLength = UINT32_MAX) MOZ_OVERRIDE;
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nsOverflowAreas
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RecomputeOverflow(const nsHTMLReflowState& aBlockReflowState);
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enum TextRunType {
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// Anything in reflow (but not intrinsic width calculation) or
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// painting should use the inflated text run (i.e., with font size
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// inflation applied).
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eInflated,
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// Intrinsic width calculation should use the non-inflated text run.
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// When there is font size inflation, it will be different.
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eNotInflated
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};
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void AddInlineMinWidthForFlow(nsRenderingContext *aRenderingContext,
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nsIFrame::InlineMinWidthData *aData,
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TextRunType aTextRunType);
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void AddInlinePrefWidthForFlow(nsRenderingContext *aRenderingContext,
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InlinePrefWidthData *aData,
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TextRunType aTextRunType);
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/**
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* Calculate the horizontal bounds of the grapheme clusters that fit entirely
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* inside the given left/right edges (which are positive lengths from the
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* respective frame edge). If an input value is zero it is ignored and the
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* result for that edge is zero. All out parameter values are undefined when
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* the method returns false.
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* @return true if at least one whole grapheme cluster fit between the edges
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*/
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bool MeasureCharClippedText(nscoord aLeftEdge, nscoord aRightEdge,
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nscoord* aSnappedLeftEdge,
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nscoord* aSnappedRightEdge);
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/**
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* Same as above; this method also the returns the corresponding text run
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* offset and number of characters that fit. All out parameter values are
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* undefined when the method returns false.
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* @return true if at least one whole grapheme cluster fit between the edges
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*/
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bool MeasureCharClippedText(PropertyProvider& aProvider,
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nscoord aLeftEdge, nscoord aRightEdge,
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uint32_t* aStartOffset, uint32_t* aMaxLength,
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nscoord* aSnappedLeftEdge,
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nscoord* aSnappedRightEdge);
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/**
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* Object with various callbacks for PaintText() to invoke for different parts
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* of the frame's text rendering, when we're generating paths rather than
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* painting.
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*
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* Callbacks are invoked in the following order:
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*
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* (NotifyBeforeSelectionBackground NotifySelectionBackgroundPathEmitted)?
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* (NotifyBeforeDecorationLine NotifyDecorationLinePathEmitted)*
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* NotifyBeforeText
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* (NotifyGlyphPathEmitted |
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* (NotifyBeforeSVGGlyphPainted NotifyAfterSVGGlyphPainted))*
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* NotifyAfterText
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* (NotifyBeforeDecorationLine NotifyDecorationLinePathEmitted)*
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* (NotifyBeforeSelectionDecorationLine NotifySelectionDecorationLinePathEmitted)*
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*
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* The color of each part of the frame's text rendering is passed as an argument
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* to the NotifyBefore* callback for that part. The nscolor can take on one of
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* the three selection special colors defined in LookAndFeel.h --
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* NS_TRANSPARENT, NS_SAME_AS_FOREGROUND_COLOR and
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* NS_40PERCENT_FOREGROUND_COLOR.
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*/
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struct DrawPathCallbacks : gfxTextRunDrawCallbacks
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{
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/**
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* @param aShouldPaintSVGGlyphs Whether SVG glyphs should be painted.
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*/
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DrawPathCallbacks(bool aShouldPaintSVGGlyphs = false)
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: gfxTextRunDrawCallbacks(aShouldPaintSVGGlyphs)
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{
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}
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/**
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* Called just before any paths have been emitted to the gfxContext
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* for the glyphs of the frame's text.
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*/
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virtual void NotifyBeforeText(nscolor aColor) { }
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/**
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* Called just after all the paths have been emitted to the gfxContext
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* for the glyphs of the frame's text.
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*/
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virtual void NotifyAfterText() { }
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/**
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* Called just before a path corresponding to the selection background
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* has been emitted to the gfxContext.
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*/
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virtual void NotifyBeforeSelectionBackground(nscolor aColor) { }
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/**
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* Called just after a path corresponding to the selection background
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* has been emitted to the gfxContext.
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*/
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virtual void NotifySelectionBackgroundPathEmitted() { }
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/**
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* Called just before a path corresponding to a text decoration line
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* has been emitted to the gfxContext.
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*/
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virtual void NotifyBeforeDecorationLine(nscolor aColor) { }
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/**
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* Called just after a path corresponding to a text decoration line
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* has been emitted to the gfxContext.
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*/
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virtual void NotifyDecorationLinePathEmitted() { }
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/**
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* Called just before a path corresponding to a selection decoration line
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* has been emitted to the gfxContext.
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*/
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virtual void NotifyBeforeSelectionDecorationLine(nscolor aColor) { }
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/**
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* Called just after a path corresponding to a selection decoration line
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* has been emitted to the gfxContext.
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*/
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virtual void NotifySelectionDecorationLinePathEmitted() { }
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};
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// Primary frame paint method called from nsDisplayText. Can also be used
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// to generate paths rather than paint the frame's text by passing a callback
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// object. The private DrawText() is what applies the text to a graphics
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// context.
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void PaintText(nsRenderingContext* aRenderingContext, nsPoint aPt,
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const nsRect& aDirtyRect, const nsCharClipDisplayItem& aItem,
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gfxTextContextPaint* aContextPaint = nullptr,
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DrawPathCallbacks* aCallbacks = nullptr);
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// helper: paint text frame when we're impacted by at least one selection.
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// Return false if the text was not painted and we should continue with
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// the fast path.
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bool PaintTextWithSelection(gfxContext* aCtx,
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const gfxPoint& aFramePt,
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const gfxPoint& aTextBaselinePt,
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const gfxRect& aDirtyRect,
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PropertyProvider& aProvider,
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uint32_t aContentOffset,
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uint32_t aContentLength,
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nsTextPaintStyle& aTextPaintStyle,
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const nsCharClipDisplayItem::ClipEdges& aClipEdges,
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gfxTextContextPaint* aContextPaint,
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DrawPathCallbacks* aCallbacks);
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// helper: paint text with foreground and background colors determined
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// by selection(s). Also computes a mask of all selection types applying to
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// our text, returned in aAllTypes.
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// Return false if the text was not painted and we should continue with
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// the fast path.
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bool PaintTextWithSelectionColors(gfxContext* aCtx,
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const gfxPoint& aFramePt,
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const gfxPoint& aTextBaselinePt,
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const gfxRect& aDirtyRect,
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PropertyProvider& aProvider,
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uint32_t aContentOffset,
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uint32_t aContentLength,
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nsTextPaintStyle& aTextPaintStyle,
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SelectionDetails* aDetails,
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SelectionType* aAllTypes,
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const nsCharClipDisplayItem::ClipEdges& aClipEdges,
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DrawPathCallbacks* aCallbacks);
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// helper: paint text decorations for text selected by aSelectionType
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void PaintTextSelectionDecorations(gfxContext* aCtx,
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const gfxPoint& aFramePt,
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const gfxPoint& aTextBaselinePt,
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const gfxRect& aDirtyRect,
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PropertyProvider& aProvider,
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uint32_t aContentOffset,
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uint32_t aContentLength,
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nsTextPaintStyle& aTextPaintStyle,
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SelectionDetails* aDetails,
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SelectionType aSelectionType,
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DrawPathCallbacks* aCallbacks);
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virtual nscolor GetCaretColorAt(int32_t aOffset) MOZ_OVERRIDE;
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int16_t GetSelectionStatus(int16_t* aSelectionFlags);
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int32_t GetContentOffset() const { return mContentOffset; }
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int32_t GetContentLength() const
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{
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NS_ASSERTION(GetContentEnd() - mContentOffset >= 0, "negative length");
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return GetContentEnd() - mContentOffset;
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}
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int32_t GetContentEnd() const;
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// This returns the length the frame thinks it *should* have after it was
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// last reflowed (0 if it hasn't been reflowed yet). This should be used only
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// when setting up the text offsets for a new continuation frame.
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int32_t GetContentLengthHint() const { return mContentLengthHint; }
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// Compute the length of the content mapped by this frame
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// and all its in-flow siblings. Basically this means starting at mContentOffset
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// and going to the end of the text node or the next bidi continuation
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// boundary.
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int32_t GetInFlowContentLength();
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/**
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* Acquires the text run for this content, if necessary.
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* @param aWhichTextRun indicates whether to get an inflated or non-inflated
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* text run
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* @param aReferenceContext the rendering context to use as a reference for
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* creating the textrun, if available (if not, we'll create one which will
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|
* just be slower)
|
|
* @param aLineContainer the block ancestor for this frame, or nullptr if
|
|
* unknown
|
|
* @param aFlowEndInTextRun if non-null, this returns the textrun offset of
|
|
* end of the text associated with this frame and its in-flow siblings
|
|
* @return a gfxSkipCharsIterator set up to map DOM offsets for this frame
|
|
* to offsets into the textrun; its initial offset is set to this frame's
|
|
* content offset
|
|
*/
|
|
gfxSkipCharsIterator EnsureTextRun(TextRunType aWhichTextRun,
|
|
gfxContext* aReferenceContext = nullptr,
|
|
nsIFrame* aLineContainer = nullptr,
|
|
const nsLineList::iterator* aLine = nullptr,
|
|
uint32_t* aFlowEndInTextRun = nullptr);
|
|
|
|
gfxTextRun* GetTextRun(TextRunType aWhichTextRun) {
|
|
if (aWhichTextRun == eInflated || !HasFontSizeInflation())
|
|
return mTextRun;
|
|
return GetUninflatedTextRun();
|
|
}
|
|
gfxTextRun* GetUninflatedTextRun();
|
|
void SetTextRun(gfxTextRun* aTextRun, TextRunType aWhichTextRun,
|
|
float aInflation);
|
|
bool IsInTextRunUserData() const {
|
|
return GetStateBits() &
|
|
(TEXT_IN_TEXTRUN_USER_DATA | TEXT_IN_UNINFLATED_TEXTRUN_USER_DATA);
|
|
}
|
|
/**
|
|
* Notify the frame that it should drop its pointer to a text run.
|
|
* Returns whether the text run was removed (i.e., whether it was
|
|
* associated with this frame, either as its inflated or non-inflated
|
|
* text run.
|
|
*/
|
|
bool RemoveTextRun(gfxTextRun* aTextRun);
|
|
/**
|
|
* Clears out |mTextRun| (or the uninflated text run, when aInflated
|
|
* is nsTextFrame::eNotInflated and there is inflation) from all frames that hold a
|
|
* reference to it, starting at |aStartContinuation|, or if it's
|
|
* nullptr, starting at |this|. Deletes the text run if all references
|
|
* were cleared and it's not cached.
|
|
*/
|
|
void ClearTextRun(nsTextFrame* aStartContinuation,
|
|
TextRunType aWhichTextRun);
|
|
|
|
void ClearTextRuns() {
|
|
ClearTextRun(nullptr, nsTextFrame::eInflated);
|
|
if (HasFontSizeInflation()) {
|
|
ClearTextRun(nullptr, nsTextFrame::eNotInflated);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Wipe out references to textrun(s) without deleting the textruns.
|
|
*/
|
|
void DisconnectTextRuns();
|
|
|
|
// Get the DOM content range mapped by this frame after excluding
|
|
// whitespace subject to start-of-line and end-of-line trimming.
|
|
// The textrun must have been created before calling this.
|
|
struct TrimmedOffsets {
|
|
int32_t mStart;
|
|
int32_t mLength;
|
|
int32_t GetEnd() const { return mStart + mLength; }
|
|
};
|
|
TrimmedOffsets GetTrimmedOffsets(const nsTextFragment* aFrag,
|
|
bool aTrimAfter, bool aPostReflow = true);
|
|
|
|
// Similar to Reflow(), but for use from nsLineLayout
|
|
void ReflowText(nsLineLayout& aLineLayout, nscoord aAvailableWidth,
|
|
nsRenderingContext* aRenderingContext,
|
|
nsHTMLReflowMetrics& aMetrics, nsReflowStatus& aStatus);
|
|
|
|
bool IsFloatingFirstLetterChild() const;
|
|
|
|
protected:
|
|
virtual ~nsTextFrame();
|
|
|
|
nsIFrame* mNextContinuation;
|
|
// The key invariant here is that mContentOffset never decreases along
|
|
// a next-continuation chain. And of course mContentOffset is always <= the
|
|
// the text node's content length, and the mContentOffset for the first frame
|
|
// is always 0. Furthermore the text mapped by a frame is determined by
|
|
// GetContentOffset() and GetContentLength()/GetContentEnd(), which get
|
|
// the length from the difference between this frame's offset and the next
|
|
// frame's offset, or the text length if there is no next frame. This means
|
|
// the frames always map the text node without overlapping or leaving any gaps.
|
|
int32_t mContentOffset;
|
|
// This does *not* indicate the length of text currently mapped by the frame;
|
|
// instead it's a hint saying that this frame *wants* to map this much text
|
|
// so if we create a new continuation, this is where that continuation should
|
|
// start.
|
|
int32_t mContentLengthHint;
|
|
nscoord mAscent;
|
|
gfxTextRun* mTextRun;
|
|
|
|
/**
|
|
* Return true if the frame is part of a Selection.
|
|
* Helper method to implement the public IsSelected() API.
|
|
*/
|
|
virtual bool IsFrameSelected() const MOZ_OVERRIDE;
|
|
|
|
// The caller of this method must call DestroySelectionDetails() on the
|
|
// return value, if that return value is not null. Calling
|
|
// DestroySelectionDetails() on a null value is still OK, just not necessary.
|
|
SelectionDetails* GetSelectionDetails();
|
|
|
|
void UnionAdditionalOverflow(nsPresContext* aPresContext,
|
|
const nsHTMLReflowState& aBlockReflowState,
|
|
PropertyProvider& aProvider,
|
|
nsRect* aVisualOverflowRect,
|
|
bool aIncludeTextDecorations);
|
|
|
|
void PaintOneShadow(uint32_t aOffset,
|
|
uint32_t aLength,
|
|
nsCSSShadowItem* aShadowDetails,
|
|
PropertyProvider* aProvider,
|
|
const nsRect& aDirtyRect,
|
|
const gfxPoint& aFramePt,
|
|
const gfxPoint& aTextBaselinePt,
|
|
gfxContext* aCtx,
|
|
const nscolor& aForegroundColor,
|
|
const nsCharClipDisplayItem::ClipEdges& aClipEdges,
|
|
nscoord aLeftSideOffset,
|
|
gfxRect& aBoundingBox);
|
|
|
|
struct LineDecoration {
|
|
nsIFrame* mFrame;
|
|
|
|
// This is represents the offset from our baseline to mFrame's baseline;
|
|
// positive offsets are *above* the baseline and negative offsets below
|
|
nscoord mBaselineOffset;
|
|
|
|
nscolor mColor;
|
|
uint8_t mStyle;
|
|
|
|
LineDecoration(nsIFrame *const aFrame,
|
|
const nscoord aOff,
|
|
const nscolor aColor,
|
|
const uint8_t aStyle)
|
|
: mFrame(aFrame),
|
|
mBaselineOffset(aOff),
|
|
mColor(aColor),
|
|
mStyle(aStyle)
|
|
{}
|
|
|
|
LineDecoration(const LineDecoration& aOther)
|
|
: mFrame(aOther.mFrame),
|
|
mBaselineOffset(aOther.mBaselineOffset),
|
|
mColor(aOther.mColor),
|
|
mStyle(aOther.mStyle)
|
|
{}
|
|
|
|
bool operator==(const LineDecoration& aOther) const {
|
|
return mFrame == aOther.mFrame &&
|
|
mStyle == aOther.mStyle &&
|
|
mColor == aOther.mColor &&
|
|
mBaselineOffset == aOther.mBaselineOffset;
|
|
}
|
|
|
|
bool operator!=(const LineDecoration& aOther) const {
|
|
return !(*this == aOther);
|
|
}
|
|
};
|
|
struct TextDecorations {
|
|
nsAutoTArray<LineDecoration, 1> mOverlines, mUnderlines, mStrikes;
|
|
|
|
TextDecorations() { }
|
|
|
|
bool HasDecorationLines() const {
|
|
return HasUnderline() || HasOverline() || HasStrikeout();
|
|
}
|
|
bool HasUnderline() const {
|
|
return !mUnderlines.IsEmpty();
|
|
}
|
|
bool HasOverline() const {
|
|
return !mOverlines.IsEmpty();
|
|
}
|
|
bool HasStrikeout() const {
|
|
return !mStrikes.IsEmpty();
|
|
}
|
|
bool operator==(const TextDecorations& aOther) const {
|
|
return mOverlines == aOther.mOverlines &&
|
|
mUnderlines == aOther.mUnderlines &&
|
|
mStrikes == aOther.mStrikes;
|
|
}
|
|
|
|
bool operator!=(const TextDecorations& aOther) const {
|
|
return !(*this == aOther);
|
|
}
|
|
|
|
};
|
|
enum TextDecorationColorResolution {
|
|
eResolvedColors,
|
|
eUnresolvedColors
|
|
};
|
|
void GetTextDecorations(nsPresContext* aPresContext,
|
|
TextDecorationColorResolution aColorResolution,
|
|
TextDecorations& aDecorations);
|
|
|
|
void DrawTextRun(gfxContext* const aCtx,
|
|
const gfxPoint& aTextBaselinePt,
|
|
uint32_t aOffset,
|
|
uint32_t aLength,
|
|
PropertyProvider& aProvider,
|
|
nscolor aTextColor,
|
|
gfxFloat& aAdvanceWidth,
|
|
bool aDrawSoftHyphen,
|
|
gfxTextContextPaint* aContextPaint,
|
|
DrawPathCallbacks* aCallbacks);
|
|
|
|
void DrawTextRunAndDecorations(gfxContext* const aCtx,
|
|
const gfxRect& aDirtyRect,
|
|
const gfxPoint& aFramePt,
|
|
const gfxPoint& aTextBaselinePt,
|
|
uint32_t aOffset,
|
|
uint32_t aLength,
|
|
PropertyProvider& aProvider,
|
|
const nsTextPaintStyle& aTextStyle,
|
|
nscolor aTextColor,
|
|
const nsCharClipDisplayItem::ClipEdges& aClipEdges,
|
|
gfxFloat& aAdvanceWidth,
|
|
bool aDrawSoftHyphen,
|
|
const TextDecorations& aDecorations,
|
|
const nscolor* const aDecorationOverrideColor,
|
|
gfxTextContextPaint* aContextPaint,
|
|
DrawPathCallbacks* aCallbacks);
|
|
|
|
void DrawText(gfxContext* const aCtx,
|
|
const gfxRect& aDirtyRect,
|
|
const gfxPoint& aFramePt,
|
|
const gfxPoint& aTextBaselinePt,
|
|
uint32_t aOffset,
|
|
uint32_t aLength,
|
|
PropertyProvider& aProvider,
|
|
const nsTextPaintStyle& aTextStyle,
|
|
nscolor aTextColor,
|
|
const nsCharClipDisplayItem::ClipEdges& aClipEdges,
|
|
gfxFloat& aAdvanceWidth,
|
|
bool aDrawSoftHyphen,
|
|
const nscolor* const aDecorationOverrideColor = nullptr,
|
|
gfxTextContextPaint* aContextPaint = nullptr,
|
|
DrawPathCallbacks* aCallbacks = nullptr);
|
|
|
|
// Set non empty rect to aRect, it should be overflow rect or frame rect.
|
|
// If the result rect is larger than the given rect, this returns true.
|
|
bool CombineSelectionUnderlineRect(nsPresContext* aPresContext,
|
|
nsRect& aRect);
|
|
|
|
ContentOffsets GetCharacterOffsetAtFramePointInternal(nsPoint aPoint,
|
|
bool aForInsertionPoint);
|
|
|
|
void ClearFrameOffsetCache();
|
|
|
|
virtual bool HasAnyNoncollapsedCharacters() MOZ_OVERRIDE;
|
|
|
|
void ClearMetrics(nsHTMLReflowMetrics& aMetrics);
|
|
};
|
|
|
|
#endif
|