121 lines
3.9 KiB
C++
121 lines
3.9 KiB
C++
/*
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* The contents of this file are subject to the Mozilla Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is Mozilla MathML Project.
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*
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* The Initial Developer of the Original Code is The University Of
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* Queensland. Portions created by The University Of Queensland are
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* Copyright (C) 1999 The University Of Queensland. All Rights Reserved.
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*
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* Contributor(s):
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* Roger B. Sidje <rbs@maths.uq.edu.au>
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* David J. Fiddes <D.J.Fiddes@hw.ac.uk>
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*/
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#ifndef nsMathMLmfencedFrame_h___
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#define nsMathMLmfencedFrame_h___
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#include "nsCOMPtr.h"
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#include "nsMathMLContainerFrame.h"
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//
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// <mfenced> -- surround content with a pair of fences
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//
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class nsMathMLmfencedFrame : public nsMathMLContainerFrame {
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public:
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friend nsresult NS_NewMathMLmfencedFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame);
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NS_IMETHOD
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SetAdditionalStyleContext(PRInt32 aIndex,
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nsIStyleContext* aStyleContext);
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NS_IMETHOD
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GetAdditionalStyleContext(PRInt32 aIndex,
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nsIStyleContext** aStyleContext) const;
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NS_IMETHOD
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Init(nsIPresContext* aPresContext,
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nsIContent* aContent,
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nsIFrame* aParent,
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nsIStyleContext* aContext,
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nsIFrame* aPrevInFlow);
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NS_IMETHOD
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SetInitialChildList(nsIPresContext* aPresContext,
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nsIAtom* aListName,
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nsIFrame* aChildList);
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NS_IMETHOD
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Reflow(nsIPresContext* aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus);
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NS_IMETHOD
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Paint(nsIPresContext* aPresContext,
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nsIRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect,
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nsFramePaintLayer aWhichLayer,
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PRUint32 aFlags = 0);
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// exported routine that both mfenced and mfrac share.
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// mfrac uses this when its bevelled attribute is set.
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static nsresult
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doReflow(nsIPresContext* aPresContext,
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const nsHTMLReflowState& aReflowState,
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nsHTMLReflowMetrics& aDesiredSize,
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nsReflowStatus& aStatus,
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nsIFrame* aForFrame,
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nsMathMLChar* aOpenChar,
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nsMathMLChar* aCloseChar,
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nsMathMLChar* aSeparatorsChar,
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PRInt32 aSeparatorsCount);
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// helper routines to format the MathMLChars involved here
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static nsresult
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ReflowChar(nsIPresContext* aPresContext,
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nsIRenderingContext& aRenderingContext,
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nsMathMLChar* aMathMLChar,
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nsOperatorFlags aForm,
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PRInt32 aScriptLevel,
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nscoord axisHeight,
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nscoord em,
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nsBoundingMetrics& aContainerSize,
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nsHTMLReflowMetrics& aDesiredSize);
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static void
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PlaceChar(nsMathMLChar* aMathMLChar,
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nscoord aDesiredSize,
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nsBoundingMetrics& bm,
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nscoord& dx);
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protected:
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nsMathMLmfencedFrame();
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virtual ~nsMathMLmfencedFrame();
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virtual PRIntn GetSkipSides() const { return 0; }
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nsMathMLChar* mOpenChar;
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nsMathMLChar* mCloseChar;
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nsMathMLChar* mSeparatorsChar;
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PRInt32 mSeparatorsCount;
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// clean up
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void
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RemoveFencesAndSeparators();
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// add fences and separators when all child frames are known
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nsresult
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CreateFencesAndSeparators(nsIPresContext* aPresContext);
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};
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#endif /* nsMathMLmfencedFrame_h___ */
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