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33bb32f549
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-o -iname "*.h" \
-o -iname "*.c" \
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}
convert MOZ_OVERRIDE override
convert MOZ_FINAL final
117 lines
3.8 KiB
C++
117 lines
3.8 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 nsMathMLmfencedFrame_h
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#define nsMathMLmfencedFrame_h
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#include "mozilla/Attributes.h"
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#include "nsMathMLContainerFrame.h"
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class nsFontMetrics;
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//
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// <mfenced> -- surround content with a pair of fences
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//
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class nsMathMLmfencedFrame final : public nsMathMLContainerFrame {
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public:
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NS_DECL_FRAMEARENA_HELPERS
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friend nsIFrame* NS_NewMathMLmfencedFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
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virtual void
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SetAdditionalStyleContext(int32_t aIndex,
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nsStyleContext* aStyleContext) override;
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virtual nsStyleContext*
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GetAdditionalStyleContext(int32_t aIndex) const override;
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NS_IMETHOD
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InheritAutomaticData(nsIFrame* aParent) override;
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virtual void
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SetInitialChildList(ChildListID aListID,
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nsFrameList& aChildList) override;
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virtual void
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Reflow(nsPresContext* aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus) override;
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virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsRect& aDirtyRect,
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const nsDisplayListSet& aLists) override;
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virtual void
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GetIntrinsicISizeMetrics(nsRenderingContext* aRenderingContext,
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nsHTMLReflowMetrics& aDesiredSize) override;
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virtual nsresult
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AttributeChanged(int32_t aNameSpaceID,
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nsIAtom* aAttribute,
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int32_t aModType) override;
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// override the base method because we must keep separators in sync
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virtual nsresult
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ChildListChanged(int32_t aModType) override;
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// override the base method so that we can deal with fences and separators
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virtual nscoord
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FixInterFrameSpacing(nsHTMLReflowMetrics& aDesiredSize) override;
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// helper routines to format the MathMLChars involved here
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static nsresult
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ReflowChar(nsPresContext* aPresContext,
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nsRenderingContext& aRenderingContext,
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nsFontMetrics& aFontMetrics,
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float aFontSizeInflation,
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nsMathMLChar* aMathMLChar,
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nsOperatorFlags aForm,
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int32_t aScriptLevel,
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nscoord axisHeight,
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nscoord leading,
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nscoord em,
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nsBoundingMetrics& aContainerSize,
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nscoord& aAscent,
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nscoord& aDescent,
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bool aRTL);
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static void
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PlaceChar(nsMathMLChar* aMathMLChar,
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nscoord aDesiredSize,
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nsBoundingMetrics& bm,
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nscoord& dx);
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virtual bool
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IsMrowLike() override
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{
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// Always treated as an mrow with > 1 child as
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// <mfenced> <mo>%</mo> </mfenced>
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// renders equivalently to
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// <mrow> <mo> ( </mo> <mo>%</mo> <mo> ) </mo> </mrow>
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// This also holds with multiple children. (MathML3 3.3.8.1)
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return true;
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}
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protected:
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explicit nsMathMLmfencedFrame(nsStyleContext* aContext) : nsMathMLContainerFrame(aContext) {}
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virtual ~nsMathMLmfencedFrame();
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nsMathMLChar* mOpenChar;
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nsMathMLChar* mCloseChar;
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nsMathMLChar* mSeparatorsChar;
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int32_t mSeparatorsCount;
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// clean up
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void
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RemoveFencesAndSeparators();
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// add fences and separators when all child frames are known
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void
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CreateFencesAndSeparators(nsPresContext* aPresContext);
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};
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#endif /* nsMathMLmfencedFrame_h */
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