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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 "mozilla/EnumSet.h"
#include "nsMathMLChar.h"
#include "nsMathMLContainerFrame.h"
namespace mozilla {
class PresShell;
} // namespace mozilla
//
// <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,
NOTATION_RADICAL,
NOTATION_ROUNDEDBOX,
NOTATION_CIRCLE,
NOTATION_LEFT,
NOTATION_RIGHT,
NOTATION_TOP,
NOTATION_BOTTOM,
NOTATION_UPDIAGONALSTRIKE,
NOTATION_DOWNDIAGONALSTRIKE,
NOTATION_VERTICALSTRIKE,
NOTATION_HORIZONTALSTRIKE,
NOTATION_UPDIAGONALARROW,
NOTATION_PHASORANGLE
};
class nsMathMLmencloseFrame : public nsMathMLContainerFrame {
public:
NS_DECL_FRAMEARENA_HELPERS(nsMathMLmencloseFrame)
friend nsIFrame* NS_NewMathMLmencloseFrame(mozilla::PresShell* aPresShell,
ComputedStyle* aStyle);
virtual nsresult Place(DrawTarget* aDrawTarget, bool aPlaceOrigin,
ReflowOutput& aDesiredSize) override;
virtual nsresult MeasureForWidth(DrawTarget* aDrawTarget,
ReflowOutput& aDesiredSize) override;
virtual nsresult AttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute,
int32_t aModType) override;
void DidSetComputedStyle(ComputedStyle* aOldStyle) 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(ComputedStyle* aStyle,
nsPresContext* aPresContext,
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
mozilla::EnumSet<nsMencloseNotation> mNotationsToDraw;
bool IsToDraw(nsMencloseNotation notation) {
return mNotationsToDraw.contains(notation);
}
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___ */