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/* -*- 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"
//
// <menclose> -- 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
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 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);
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<nsMathMLChar> 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___ */
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