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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla MathML Project.
*
* The Initial Developer of the Original Code is
* The University Of Queensland.
* Portions created by the Initial Developer are Copyright (C) 1999
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Roger B. Sidje <rbs@maths.uq.edu.au>
* David J. Fiddes <D.J.Fiddes@hw.ac.uk>
* Vilya Harvey <vilya@nag.co.uk>
* Shyjan Mahamud <mahamud@cs.cmu.edu>
* Frederic Wang <fred.wang@free.fr> - extension of <msqrt/> to <menclose/>
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef nsMathMLmencloseFrame_h___
#define nsMathMLmencloseFrame_h___
#include "nsCOMPtr.h"
#include "nsMathMLContainerFrame.h"
//
// <menclose> -- enclose content with a stretching symbol such
// as a long division sign.
//
/*
The MathML REC describes:
The menclose element renders its content inside the enclosing notation
specified by its notation attribute. menclose accepts any number of arguments;
if this number is not 1, its contents are treated as a single "inferred mrow"
containing its arguments, as described in Section 3.1.3 Required Arguments.
*/
enum nsMencloseNotation
{
NOTATION_LONGDIV = 0x1,
NOTATION_RADICAL = 0x2,
NOTATION_ROUNDEDBOX = 0x4,
NOTATION_CIRCLE = 0x8,
NOTATION_LEFT = 0x10,
NOTATION_RIGHT = 0x20,
NOTATION_TOP = 0x40,
NOTATION_BOTTOM = 0x80,
NOTATION_UPDIAGONALSTRIKE = 0x100,
NOTATION_DOWNDIAGONALSTRIKE = 0x200,
NOTATION_VERTICALSTRIKE = 0x400,
NOTATION_HORIZONTALSTRIKE = 0x800
};
class nsMathMLmencloseFrame : public nsMathMLContainerFrame {
public:
NS_DECL_FRAMEARENA_HELPERS
friend nsIFrame* NS_NewMathMLmencloseFrame(nsIPresShell* aPresShell,
nsStyleContext* aContext);
virtual nsresult
Place(nsRenderingContext& aRenderingContext,
PRBool aPlaceOrigin,
nsHTMLReflowMetrics& aDesiredSize);
virtual nsresult
MeasureForWidth(nsRenderingContext& aRenderingContext,
nsHTMLReflowMetrics& aDesiredSize);
NS_IMETHOD
AttributeChanged(PRInt32 aNameSpaceID,
nsIAtom* aAttribute,
PRInt32 aModType);
virtual void
SetAdditionalStyleContext(PRInt32 aIndex,
nsStyleContext* aStyleContext);
virtual nsStyleContext*
GetAdditionalStyleContext(PRInt32 aIndex) const;
NS_IMETHOD BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsRect& aDirtyRect,
const nsDisplayListSet& aLists);
NS_IMETHOD
InheritAutomaticData(nsIFrame* aParent);
NS_IMETHOD
TransmitAutomaticData();
virtual nscoord
FixInterFrameSpacing(nsHTMLReflowMetrics& aDesiredSize);
protected:
nsMathMLmencloseFrame(nsStyleContext* aContext);
virtual ~nsMathMLmencloseFrame();
nsresult PlaceInternal(nsRenderingContext& aRenderingContext,
PRBool aPlaceOrigin,
nsHTMLReflowMetrics& aDesiredSize,
PRBool aWidthOnly);
// functions to parse the "notation" attribute.
nsresult AddNotation(const nsAString& aNotation);
void InitNotations();
// Description of the notations to draw
PRUint32 mNotationsToDraw;
PRBool IsToDraw(nsMencloseNotation mask)
{
return mask & mNotationsToDraw;
}
nscoord mRuleThickness;
nsTArray<nsMathMLChar> mMathMLChar;
PRInt8 mLongDivCharIndex, mRadicalCharIndex;
nscoord mContentWidth;
nsresult AllocateMathMLChar(nsMencloseNotation mask);
// Display a frame of the specified type.
// @param aType Type of frame to display
nsresult DisplayNotation(nsDisplayListBuilder* aBuilder,
nsIFrame* aFrame, const nsRect& aRect,
const nsDisplayListSet& aLists,
nscoord aThickness, nsMencloseNotation aType);
};
#endif /* nsMathMLmencloseFrame_h___ */
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