/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ #ifndef nsMathMLmencloseFrame_h___ #define nsMathMLmencloseFrame_h___ #include "mozilla/Attributes.h" #include "nsMathMLContainerFrame.h" // // -- enclose content with a stretching symbol such // as a long division sign. // /* The MathML REC describes: The menclose element renders its content inside the enclosing notation specified by its notation attribute. menclose accepts any number of arguments; if this number is not 1, its contents are treated as a single "inferred mrow" containing its arguments, as described in Section 3.1.3 Required Arguments. */ enum nsMencloseNotation { NOTATION_LONGDIV = 0x1, NOTATION_RADICAL = 0x2, NOTATION_ROUNDEDBOX = 0x4, NOTATION_CIRCLE = 0x8, NOTATION_LEFT = 0x10, NOTATION_RIGHT = 0x20, NOTATION_TOP = 0x40, NOTATION_BOTTOM = 0x80, NOTATION_UPDIAGONALSTRIKE = 0x100, NOTATION_DOWNDIAGONALSTRIKE = 0x200, NOTATION_VERTICALSTRIKE = 0x400, NOTATION_HORIZONTALSTRIKE = 0x800, NOTATION_UPDIAGONALARROW = 0x1000, NOTATION_PHASORANGLE = 0x2000 }; class nsMathMLmencloseFrame : public nsMathMLContainerFrame { public: NS_DECL_FRAMEARENA_HELPERS(nsMathMLmencloseFrame) friend nsIFrame* NS_NewMathMLmencloseFrame(nsIPresShell* aPresShell, nsStyleContext* aContext); virtual nsresult Place(DrawTarget* aDrawTarget, bool aPlaceOrigin, ReflowOutput& aDesiredSize) override; virtual nsresult MeasureForWidth(DrawTarget* aDrawTarget, ReflowOutput& aDesiredSize) override; virtual nsresult AttributeChanged(int32_t aNameSpaceID, nsIAtom* aAttribute, int32_t aModType) override; virtual void SetAdditionalStyleContext(int32_t aIndex, nsStyleContext* aStyleContext) override; virtual nsStyleContext* GetAdditionalStyleContext(int32_t aIndex) const override; virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder, const nsRect& aDirtyRect, const nsDisplayListSet& aLists) override; NS_IMETHOD InheritAutomaticData(nsIFrame* aParent) override; NS_IMETHOD TransmitAutomaticData() override; virtual nscoord FixInterFrameSpacing(ReflowOutput& aDesiredSize) override; bool IsMrowLike() override { return mFrames.FirstChild() != mFrames.LastChild() || !mFrames.FirstChild(); } protected: explicit nsMathMLmencloseFrame(nsStyleContext* aContext, ClassID aID = kClassID); virtual ~nsMathMLmencloseFrame(); nsresult PlaceInternal(DrawTarget* aDrawTarget, bool aPlaceOrigin, ReflowOutput& aDesiredSize, bool aWidthOnly); // functions to parse the "notation" attribute. nsresult AddNotation(const nsAString& aNotation); void InitNotations(); // Description of the notations to draw uint32_t mNotationsToDraw; bool IsToDraw(nsMencloseNotation mask) { return mask & mNotationsToDraw; } nscoord mRuleThickness; nscoord mRadicalRuleThickness; nsTArray mMathMLChar; int8_t mLongDivCharIndex, mRadicalCharIndex; nscoord mContentWidth; nsresult AllocateMathMLChar(nsMencloseNotation mask); // Display a frame of the specified type. // @param aType Type of frame to display void DisplayNotation(nsDisplayListBuilder* aBuilder, nsIFrame* aFrame, const nsRect& aRect, const nsDisplayListSet& aLists, nscoord aThickness, nsMencloseNotation aType); }; #endif /* nsMathMLmencloseFrame_h___ */