The Tor Browser / file comparison
comparison: layout/mathml/nsMathMLmfencedFrame.h
layout/mathml/nsMathMLmfencedFrame.h
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:7ed375ab5283 |
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| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #ifndef nsMathMLmfencedFrame_h | |
| 7 #define nsMathMLmfencedFrame_h | |
| 8 | |
| 9 #include "mozilla/Attributes.h" | |
| 10 #include "nsMathMLContainerFrame.h" | |
| 11 | |
| 12 // | |
| 13 // <mfenced> -- surround content with a pair of fences | |
| 14 // | |
| 15 | |
| 16 class nsMathMLmfencedFrame : public nsMathMLContainerFrame { | |
| 17 public: | |
| 18 NS_DECL_FRAMEARENA_HELPERS | |
| 19 | |
| 20 friend nsIFrame* NS_NewMathMLmfencedFrame(nsIPresShell* aPresShell, nsStyleContext* aContext); | |
| 21 | |
| 22 virtual void | |
| 23 SetAdditionalStyleContext(int32_t aIndex, | |
| 24 nsStyleContext* aStyleContext) MOZ_OVERRIDE; | |
| 25 virtual nsStyleContext* | |
| 26 GetAdditionalStyleContext(int32_t aIndex) const MOZ_OVERRIDE; | |
| 27 | |
| 28 NS_IMETHOD | |
| 29 InheritAutomaticData(nsIFrame* aParent) MOZ_OVERRIDE; | |
| 30 | |
| 31 virtual nsresult | |
| 32 SetInitialChildList(ChildListID aListID, | |
| 33 nsFrameList& aChildList) MOZ_OVERRIDE; | |
| 34 | |
| 35 virtual nsresult | |
| 36 Reflow(nsPresContext* aPresContext, | |
| 37 nsHTMLReflowMetrics& aDesiredSize, | |
| 38 const nsHTMLReflowState& aReflowState, | |
| 39 nsReflowStatus& aStatus) MOZ_OVERRIDE; | |
| 40 | |
| 41 virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder, | |
| 42 const nsRect& aDirtyRect, | |
| 43 const nsDisplayListSet& aLists) MOZ_OVERRIDE; | |
| 44 | |
| 45 virtual void | |
| 46 GetIntrinsicWidthMetrics(nsRenderingContext* aRenderingContext, | |
| 47 nsHTMLReflowMetrics& aDesiredSize) MOZ_OVERRIDE; | |
| 48 | |
| 49 virtual nsresult | |
| 50 AttributeChanged(int32_t aNameSpaceID, | |
| 51 nsIAtom* aAttribute, | |
| 52 int32_t aModType) MOZ_OVERRIDE; | |
| 53 | |
| 54 // override the base method because we must keep separators in sync | |
| 55 virtual nsresult | |
| 56 ChildListChanged(int32_t aModType) MOZ_OVERRIDE; | |
| 57 | |
| 58 // override the base method so that we can deal with fences and separators | |
| 59 virtual nscoord | |
| 60 FixInterFrameSpacing(nsHTMLReflowMetrics& aDesiredSize) MOZ_OVERRIDE; | |
| 61 | |
| 62 // helper routines to format the MathMLChars involved here | |
| 63 static nsresult | |
| 64 ReflowChar(nsPresContext* aPresContext, | |
| 65 nsRenderingContext& aRenderingContext, | |
| 66 nsMathMLChar* aMathMLChar, | |
| 67 nsOperatorFlags aForm, | |
| 68 int32_t aScriptLevel, | |
| 69 nscoord axisHeight, | |
| 70 nscoord leading, | |
| 71 nscoord em, | |
| 72 nsBoundingMetrics& aContainerSize, | |
| 73 nscoord& aAscent, | |
| 74 nscoord& aDescent, | |
| 75 bool aRTL); | |
| 76 | |
| 77 static void | |
| 78 PlaceChar(nsMathMLChar* aMathMLChar, | |
| 79 nscoord aDesiredSize, | |
| 80 nsBoundingMetrics& bm, | |
| 81 nscoord& dx); | |
| 82 | |
| 83 virtual bool | |
| 84 IsMrowLike() MOZ_OVERRIDE | |
| 85 { | |
| 86 // Always treated as an mrow with > 1 child as | |
| 87 // <mfenced> <mo>%</mo> </mfenced> | |
| 88 // renders equivalently to | |
| 89 // <mrow> <mo> ( </mo> <mo>%</mo> <mo> ) </mo> </mrow> | |
| 90 // This also holds with multiple children. (MathML3 3.3.8.1) | |
| 91 return true; | |
| 92 } | |
| 93 | |
| 94 protected: | |
| 95 nsMathMLmfencedFrame(nsStyleContext* aContext) : nsMathMLContainerFrame(aContext) {} | |
| 96 virtual ~nsMathMLmfencedFrame(); | |
| 97 | |
| 98 nsMathMLChar* mOpenChar; | |
| 99 nsMathMLChar* mCloseChar; | |
| 100 nsMathMLChar* mSeparatorsChar; | |
| 101 int32_t mSeparatorsCount; | |
| 102 | |
| 103 // clean up | |
| 104 void | |
| 105 RemoveFencesAndSeparators(); | |
| 106 | |
| 107 // add fences and separators when all child frames are known | |
| 108 void | |
| 109 CreateFencesAndSeparators(nsPresContext* aPresContext); | |
| 110 }; | |
| 111 | |
| 112 #endif /* nsMathMLmfencedFrame_h */ |
