gecko-dev/layout/mathml/nsMathMLmpaddedFrame.h

85 lines
2.3 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 nsMathMLmpaddedFrame_h___
#define nsMathMLmpaddedFrame_h___
#include "nsCOMPtr.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);
NS_IMETHOD
TransmitAutomaticData() {
return TransmitAutomaticDataForMrowLikeElement();
}
NS_IMETHOD
Reflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus);
virtual nsresult
Place(nsRenderingContext& aRenderingContext,
bool aPlaceOrigin,
nsHTMLReflowMetrics& aDesiredSize);
protected:
nsMathMLmpaddedFrame(nsStyleContext* aContext) : nsMathMLContainerFrame(aContext) {}
virtual ~nsMathMLmpaddedFrame();
virtual int GetSkipSides() const { return 0; }
private:
nsCSSValue mWidth;
nsCSSValue mHeight;
nsCSSValue mDepth;
nsCSSValue mLeadingSpace;
nsCSSValue mVerticalOffset;
PRInt32 mWidthSign;
PRInt32 mHeightSign;
PRInt32 mDepthSign;
PRInt32 mLeadingSpaceSign;
PRInt32 mVerticalOffsetSign;
PRInt32 mWidthPseudoUnit;
PRInt32 mHeightPseudoUnit;
PRInt32 mDepthPseudoUnit;
PRInt32 mLeadingSpacePseudoUnit;
PRInt32 mVerticalOffsetPseudoUnit;
// helpers to process the attributes
void
ProcessAttributes();
static bool
ParseAttribute(nsString& aString,
PRInt32& aSign,
nsCSSValue& aCSSValue,
PRInt32& aPseudoUnit);
void
UpdateValue(PRInt32 aSign,
PRInt32 aPseudoUnit,
const nsCSSValue& aCSSValue,
const nsBoundingMetrics& aBoundingMetrics,
nscoord& aValueToUpdate) const;
};
#endif /* nsMathMLmpaddedFrame_h___ */