adbcc9920a
FrameLayerBuilder requires the the (frame,per-frame-key) for each display item is unique. It only enforces this in certain situations though, so there's cases where we've gotten away without this. Retained display lists introduces more situations where we rely on this, so I've found a few. MathML nsDisplayNotation and nsDisplayMathMLBar are the two fixed by this patch.
127 lines
3.9 KiB
C++
127 lines
3.9 KiB
C++
/* -*- 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 "mozilla/EnumSet.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,
|
|
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(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, 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___ */
|