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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 nsMathMLmpaddedFrame_h___
#define nsMathMLmpaddedFrame_h___
#include "mozilla/Attributes.h"
#include "nsCSSValue.h"
#include "nsMathMLContainerFrame.h"
namespace mozilla {
class PresShell;
} // namespace mozilla
//
// <mpadded> -- adjust space around content
//
class nsMathMLmpaddedFrame final : public nsMathMLContainerFrame {
public:
NS_DECL_FRAMEARENA_HELPERS(nsMathMLmpaddedFrame)
friend nsIFrame* NS_NewMathMLmpaddedFrame(mozilla::PresShell* aPresShell,
ComputedStyle* aStyle);
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(ComputedStyle* aStyle,
nsPresContext* aPresContext)
: nsMathMLContainerFrame(aStyle, aPresContext, kClassID),
mWidthSign(0),
mHeightSign(0),
mDepthSign(0),
mLeadingSpaceSign(0),
mVerticalOffsetSign(0),
mWidthPseudoUnit(0),
mHeightPseudoUnit(0),
mDepthPseudoUnit(0),
mLeadingSpacePseudoUnit(0),
mVerticalOffsetPseudoUnit(0) {}
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();
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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