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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 nsMathMLmpaddedFrame_h___
#define nsMathMLmpaddedFrame_h___
#include "mozilla/Attributes.h"
#include "nsMathMLContainerFrame.h"
//
// <mpadded> -- adjust space around content
//
class nsMathMLmpaddedFrame : public nsMathMLContainerFrame {
public:
NS_DECL_FRAMEARENA_HELPERS
friend nsIFrame* NS_NewMathMLmpaddedFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
NS_IMETHOD
InheritAutomaticData(nsIFrame* aParent) override;
NS_IMETHOD
TransmitAutomaticData() override {
return TransmitAutomaticDataForMrowLikeElement();
}
virtual void
Reflow(nsPresContext* aPresContext,
ReflowOutput& aDesiredSize,
const ReflowInput& aReflowInput,
nsReflowStatus& aStatus) override;
virtual nsresult
Place(DrawTarget* aDrawTarget,
bool aPlaceOrigin,
ReflowOutput& aDesiredSize) override;
bool
IsMrowLike() override {
return mFrames.FirstChild() != mFrames.LastChild() ||
!mFrames.FirstChild();
}
protected:
explicit nsMathMLmpaddedFrame(nsStyleContext* aContext) : nsMathMLContainerFrame(aContext) {}
virtual ~nsMathMLmpaddedFrame();
virtual nsresult
MeasureForWidth(DrawTarget* aDrawTarget,
ReflowOutput& aDesiredSize) override;
private:
nsCSSValue mWidth;
nsCSSValue mHeight;
nsCSSValue mDepth;
nsCSSValue mLeadingSpace;
nsCSSValue mVerticalOffset;
int32_t mWidthSign;
int32_t mHeightSign;
int32_t mDepthSign;
int32_t mLeadingSpaceSign;
int32_t mVerticalOffsetSign;
int32_t mWidthPseudoUnit;
int32_t mHeightPseudoUnit;
int32_t mDepthPseudoUnit;
int32_t mLeadingSpacePseudoUnit;
int32_t mVerticalOffsetPseudoUnit;
// helpers to process the attributes
void
ProcessAttributes();
static bool
ParseAttribute(nsString& aString,
int32_t& aSign,
nsCSSValue& aCSSValue,
int32_t& aPseudoUnit);
void
UpdateValue(int32_t aSign,
int32_t aPseudoUnit,
const nsCSSValue& aCSSValue,
const ReflowOutput& aDesiredSize,
nscoord& aValueToUpdate,
float aFontSizeInflation) const;
};
#endif /* nsMathMLmpaddedFrame_h___ */
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