79 lines
2.5 KiB
C++
79 lines
2.5 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 limitions 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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* Shyjan Mahamud <mahamud@cs.cmu.edu> (added TeX rendering rules)
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*/
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#ifndef nsMathMLmsupFrame_h___
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#define nsMathMLmsupFrame_h___
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#include "nsCOMPtr.h"
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#include "nsMathMLContainerFrame.h"
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//
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// <msup> -- attach a superscript to a base
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//
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class nsMathMLmsupFrame : public nsMathMLContainerFrame {
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public:
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friend nsresult NS_NewMathMLmsupFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame);
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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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Place(nsIPresContext* aPresContext,
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nsIRenderingContext& aRenderingContext,
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PRBool aPlaceOrigin,
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nsHTMLReflowMetrics& aDesiredSize);
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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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{
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nsresult rv;
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rv = nsMathMLContainerFrame::SetInitialChildList(aPresContext, aListName, aChildList);
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UpdatePresentationDataFromChildAt(1, 1, PR_FALSE);
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// switch the style of the superscript
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InsertScriptLevelStyleContext(aPresContext);
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// check whether or not this is an embellished operator
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EmbellishOperator();
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return rv;
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}
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protected:
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nsMathMLmsupFrame();
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virtual ~nsMathMLmsupFrame();
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virtual PRIntn GetSkipSides() const { return 0; }
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private:
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nscoord mScriptSpace; // scriptspace from TeX for extra spacing after sup/subscript
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// = 0.5pt in plain TeX
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nscoord mSupScriptShift;
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};
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#endif /* nsMathMLmsupFrame_h___ */
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