1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/layout/mathml/nsMathMLmencloseFrame.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,124 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +
1.10 +#ifndef nsMathMLmencloseFrame_h___
1.11 +#define nsMathMLmencloseFrame_h___
1.12 +
1.13 +#include "mozilla/Attributes.h"
1.14 +#include "nsMathMLContainerFrame.h"
1.15 +
1.16 +//
1.17 +// <menclose> -- enclose content with a stretching symbol such
1.18 +// as a long division sign.
1.19 +//
1.20 +
1.21 +/*
1.22 + The MathML REC describes:
1.23 +
1.24 + The menclose element renders its content inside the enclosing notation
1.25 + specified by its notation attribute. menclose accepts any number of arguments;
1.26 + if this number is not 1, its contents are treated as a single "inferred mrow"
1.27 + containing its arguments, as described in Section 3.1.3 Required Arguments.
1.28 +*/
1.29 +
1.30 +enum nsMencloseNotation
1.31 + {
1.32 + NOTATION_LONGDIV = 0x1,
1.33 + NOTATION_RADICAL = 0x2,
1.34 + NOTATION_ROUNDEDBOX = 0x4,
1.35 + NOTATION_CIRCLE = 0x8,
1.36 + NOTATION_LEFT = 0x10,
1.37 + NOTATION_RIGHT = 0x20,
1.38 + NOTATION_TOP = 0x40,
1.39 + NOTATION_BOTTOM = 0x80,
1.40 + NOTATION_UPDIAGONALSTRIKE = 0x100,
1.41 + NOTATION_DOWNDIAGONALSTRIKE = 0x200,
1.42 + NOTATION_VERTICALSTRIKE = 0x400,
1.43 + NOTATION_HORIZONTALSTRIKE = 0x800,
1.44 + NOTATION_UPDIAGONALARROW = 0x1000
1.45 + };
1.46 +
1.47 +class nsMathMLmencloseFrame : public nsMathMLContainerFrame {
1.48 +public:
1.49 + NS_DECL_FRAMEARENA_HELPERS
1.50 +
1.51 + friend nsIFrame* NS_NewMathMLmencloseFrame(nsIPresShell* aPresShell,
1.52 + nsStyleContext* aContext);
1.53 +
1.54 + virtual nsresult
1.55 + Place(nsRenderingContext& aRenderingContext,
1.56 + bool aPlaceOrigin,
1.57 + nsHTMLReflowMetrics& aDesiredSize) MOZ_OVERRIDE;
1.58 +
1.59 + virtual nsresult
1.60 + MeasureForWidth(nsRenderingContext& aRenderingContext,
1.61 + nsHTMLReflowMetrics& aDesiredSize) MOZ_OVERRIDE;
1.62 +
1.63 + virtual nsresult
1.64 + AttributeChanged(int32_t aNameSpaceID,
1.65 + nsIAtom* aAttribute,
1.66 + int32_t aModType) MOZ_OVERRIDE;
1.67 +
1.68 + virtual void
1.69 + SetAdditionalStyleContext(int32_t aIndex,
1.70 + nsStyleContext* aStyleContext) MOZ_OVERRIDE;
1.71 + virtual nsStyleContext*
1.72 + GetAdditionalStyleContext(int32_t aIndex) const MOZ_OVERRIDE;
1.73 +
1.74 + virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
1.75 + const nsRect& aDirtyRect,
1.76 + const nsDisplayListSet& aLists) MOZ_OVERRIDE;
1.77 +
1.78 + NS_IMETHOD
1.79 + InheritAutomaticData(nsIFrame* aParent) MOZ_OVERRIDE;
1.80 +
1.81 + NS_IMETHOD
1.82 + TransmitAutomaticData() MOZ_OVERRIDE;
1.83 +
1.84 + virtual nscoord
1.85 + FixInterFrameSpacing(nsHTMLReflowMetrics& aDesiredSize) MOZ_OVERRIDE;
1.86 +
1.87 + bool
1.88 + IsMrowLike() MOZ_OVERRIDE {
1.89 + return mFrames.FirstChild() != mFrames.LastChild() ||
1.90 + !mFrames.FirstChild();
1.91 + }
1.92 +
1.93 +protected:
1.94 + nsMathMLmencloseFrame(nsStyleContext* aContext);
1.95 + virtual ~nsMathMLmencloseFrame();
1.96 +
1.97 + nsresult PlaceInternal(nsRenderingContext& aRenderingContext,
1.98 + bool aPlaceOrigin,
1.99 + nsHTMLReflowMetrics& aDesiredSize,
1.100 + bool aWidthOnly);
1.101 +
1.102 + // functions to parse the "notation" attribute.
1.103 + nsresult AddNotation(const nsAString& aNotation);
1.104 + void InitNotations();
1.105 +
1.106 + // Description of the notations to draw
1.107 + uint32_t mNotationsToDraw;
1.108 + bool IsToDraw(nsMencloseNotation mask)
1.109 + {
1.110 + return mask & mNotationsToDraw;
1.111 + }
1.112 +
1.113 + nscoord mRuleThickness;
1.114 + nsTArray<nsMathMLChar> mMathMLChar;
1.115 + int8_t mLongDivCharIndex, mRadicalCharIndex;
1.116 + nscoord mContentWidth;
1.117 + nsresult AllocateMathMLChar(nsMencloseNotation mask);
1.118 +
1.119 + // Display a frame of the specified type.
1.120 + // @param aType Type of frame to display
1.121 + void DisplayNotation(nsDisplayListBuilder* aBuilder,
1.122 + nsIFrame* aFrame, const nsRect& aRect,
1.123 + const nsDisplayListSet& aLists,
1.124 + nscoord aThickness, nsMencloseNotation aType);
1.125 +};
1.126 +
1.127 +#endif /* nsMathMLmencloseFrame_h___ */
