layout/mathml/nsMathMLmfencedFrame.h@97036ab72558 (annotated)
layout/mathml/nsMathMLmfencedFrame.h
Tue, 06 Jan 2015 21:39:09 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Tue, 06 Jan 2015 21:39:09 +0100
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
- permissions
- -rw-r--r--
Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| michael@0 | 2 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 3 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 4 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 5 | |
| michael@0 | 6 | #ifndef nsMathMLmfencedFrame_h |
| michael@0 | 7 | #define nsMathMLmfencedFrame_h |
| michael@0 | 8 | |
| michael@0 | 9 | #include "mozilla/Attributes.h" |
| michael@0 | 10 | #include "nsMathMLContainerFrame.h" |
| michael@0 | 11 | |
| michael@0 | 12 | // |
| michael@0 | 13 | // <mfenced> -- surround content with a pair of fences |
| michael@0 | 14 | // |
| michael@0 | 15 | |
| michael@0 | 16 | class nsMathMLmfencedFrame : public nsMathMLContainerFrame { |
| michael@0 | 17 | public: |
| michael@0 | 18 | NS_DECL_FRAMEARENA_HELPERS |
| michael@0 | 19 | |
| michael@0 | 20 | friend nsIFrame* NS_NewMathMLmfencedFrame(nsIPresShell* aPresShell, nsStyleContext* aContext); |
| michael@0 | 21 | |
| michael@0 | 22 | virtual void |
| michael@0 | 23 | SetAdditionalStyleContext(int32_t aIndex, |
| michael@0 | 24 | nsStyleContext* aStyleContext) MOZ_OVERRIDE; |
| michael@0 | 25 | virtual nsStyleContext* |
| michael@0 | 26 | GetAdditionalStyleContext(int32_t aIndex) const MOZ_OVERRIDE; |
| michael@0 | 27 | |
| michael@0 | 28 | NS_IMETHOD |
| michael@0 | 29 | InheritAutomaticData(nsIFrame* aParent) MOZ_OVERRIDE; |
| michael@0 | 30 | |
| michael@0 | 31 | virtual nsresult |
| michael@0 | 32 | SetInitialChildList(ChildListID aListID, |
| michael@0 | 33 | nsFrameList& aChildList) MOZ_OVERRIDE; |
| michael@0 | 34 | |
| michael@0 | 35 | virtual nsresult |
| michael@0 | 36 | Reflow(nsPresContext* aPresContext, |
| michael@0 | 37 | nsHTMLReflowMetrics& aDesiredSize, |
| michael@0 | 38 | const nsHTMLReflowState& aReflowState, |
| michael@0 | 39 | nsReflowStatus& aStatus) MOZ_OVERRIDE; |
| michael@0 | 40 | |
| michael@0 | 41 | virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder, |
| michael@0 | 42 | const nsRect& aDirtyRect, |
| michael@0 | 43 | const nsDisplayListSet& aLists) MOZ_OVERRIDE; |
| michael@0 | 44 | |
| michael@0 | 45 | virtual void |
| michael@0 | 46 | GetIntrinsicWidthMetrics(nsRenderingContext* aRenderingContext, |
| michael@0 | 47 | nsHTMLReflowMetrics& aDesiredSize) MOZ_OVERRIDE; |
| michael@0 | 48 | |
| michael@0 | 49 | virtual nsresult |
| michael@0 | 50 | AttributeChanged(int32_t aNameSpaceID, |
| michael@0 | 51 | nsIAtom* aAttribute, |
| michael@0 | 52 | int32_t aModType) MOZ_OVERRIDE; |
| michael@0 | 53 | |
| michael@0 | 54 | // override the base method because we must keep separators in sync |
| michael@0 | 55 | virtual nsresult |
| michael@0 | 56 | ChildListChanged(int32_t aModType) MOZ_OVERRIDE; |
| michael@0 | 57 | |
| michael@0 | 58 | // override the base method so that we can deal with fences and separators |
| michael@0 | 59 | virtual nscoord |
| michael@0 | 60 | FixInterFrameSpacing(nsHTMLReflowMetrics& aDesiredSize) MOZ_OVERRIDE; |
| michael@0 | 61 | |
| michael@0 | 62 | // helper routines to format the MathMLChars involved here |
| michael@0 | 63 | static nsresult |
| michael@0 | 64 | ReflowChar(nsPresContext* aPresContext, |
| michael@0 | 65 | nsRenderingContext& aRenderingContext, |
| michael@0 | 66 | nsMathMLChar* aMathMLChar, |
| michael@0 | 67 | nsOperatorFlags aForm, |
| michael@0 | 68 | int32_t aScriptLevel, |
| michael@0 | 69 | nscoord axisHeight, |
| michael@0 | 70 | nscoord leading, |
| michael@0 | 71 | nscoord em, |
| michael@0 | 72 | nsBoundingMetrics& aContainerSize, |
| michael@0 | 73 | nscoord& aAscent, |
| michael@0 | 74 | nscoord& aDescent, |
| michael@0 | 75 | bool aRTL); |
| michael@0 | 76 | |
| michael@0 | 77 | static void |
| michael@0 | 78 | PlaceChar(nsMathMLChar* aMathMLChar, |
| michael@0 | 79 | nscoord aDesiredSize, |
| michael@0 | 80 | nsBoundingMetrics& bm, |
| michael@0 | 81 | nscoord& dx); |
| michael@0 | 82 | |
| michael@0 | 83 | virtual bool |
| michael@0 | 84 | IsMrowLike() MOZ_OVERRIDE |
| michael@0 | 85 | { |
| michael@0 | 86 | // Always treated as an mrow with > 1 child as |
| michael@0 | 87 | // <mfenced> <mo>%</mo> </mfenced> |
| michael@0 | 88 | // renders equivalently to |
| michael@0 | 89 | // <mrow> <mo> ( </mo> <mo>%</mo> <mo> ) </mo> </mrow> |
| michael@0 | 90 | // This also holds with multiple children. (MathML3 3.3.8.1) |
| michael@0 | 91 | return true; |
| michael@0 | 92 | } |
| michael@0 | 93 | |
| michael@0 | 94 | protected: |
| michael@0 | 95 | nsMathMLmfencedFrame(nsStyleContext* aContext) : nsMathMLContainerFrame(aContext) {} |
| michael@0 | 96 | virtual ~nsMathMLmfencedFrame(); |
| michael@0 | 97 | |
| michael@0 | 98 | nsMathMLChar* mOpenChar; |
| michael@0 | 99 | nsMathMLChar* mCloseChar; |
| michael@0 | 100 | nsMathMLChar* mSeparatorsChar; |
| michael@0 | 101 | int32_t mSeparatorsCount; |
| michael@0 | 102 | |
| michael@0 | 103 | // clean up |
| michael@0 | 104 | void |
| michael@0 | 105 | RemoveFencesAndSeparators(); |
| michael@0 | 106 | |
| michael@0 | 107 | // add fences and separators when all child frames are known |
| michael@0 | 108 | void |
| michael@0 | 109 | CreateFencesAndSeparators(nsPresContext* aPresContext); |
| michael@0 | 110 | }; |
| michael@0 | 111 | |
| michael@0 | 112 | #endif /* nsMathMLmfencedFrame_h */ |
