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