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lightning-sunbird  0.9+nobinonly
nsMathMLmrowFrame.cpp
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00001 /* ***** BEGIN LICENSE BLOCK *****
00002  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00003  *
00004  * The contents of this file are subject to the Mozilla Public License Version
00005  * 1.1 (the "License"); you may not use this file except in compliance with
00006  * the License. You may obtain a copy of the License at
00007  * http://www.mozilla.org/MPL/
00008  *
00009  * Software distributed under the License is distributed on an "AS IS" basis,
00010  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00011  * for the specific language governing rights and limitations under the
00012  * License.
00013  *
00014  * The Original Code is Mozilla MathML Project.
00015  *
00016  * The Initial Developer of the Original Code is
00017  * The University Of Queensland.
00018  * Portions created by the Initial Developer are Copyright (C) 1999
00019  * the Initial Developer. All Rights Reserved.
00020  *
00021  * Contributor(s):
00022  *   Roger B. Sidje <rbs@maths.uq.edu.au>
00023  *   David J. Fiddes <D.J.Fiddes@hw.ac.uk>
00024  *
00025  * Alternatively, the contents of this file may be used under the terms of
00026  * either of the GNU General Public License Version 2 or later (the "GPL"),
00027  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00028  * in which case the provisions of the GPL or the LGPL are applicable instead
00029  * of those above. If you wish to allow use of your version of this file only
00030  * under the terms of either the GPL or the LGPL, and not to allow others to
00031  * use your version of this file under the terms of the MPL, indicate your
00032  * decision by deleting the provisions above and replace them with the notice
00033  * and other provisions required by the GPL or the LGPL. If you do not delete
00034  * the provisions above, a recipient may use your version of this file under
00035  * the terms of any one of the MPL, the GPL or the LGPL.
00036  *
00037  * ***** END LICENSE BLOCK ***** */
00038 
00039 
00040 #include "nsCOMPtr.h"
00041 #include "nsFrame.h"
00042 #include "nsPresContext.h"
00043 #include "nsUnitConversion.h"
00044 #include "nsStyleContext.h"
00045 #include "nsStyleConsts.h"
00046 #include "nsIRenderingContext.h"
00047 #include "nsIFontMetrics.h"
00048 
00049 #include "nsMathMLmrowFrame.h"
00050 
00051 //
00052 // <mrow> -- horizontally group any number of subexpressions - implementation
00053 //
00054 
00055 nsresult
00056 NS_NewMathMLmrowFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame)
00057 {
00058   NS_PRECONDITION(aNewFrame, "null OUT ptr");
00059   if (nsnull == aNewFrame) {
00060     return NS_ERROR_NULL_POINTER;
00061   }
00062   nsMathMLmrowFrame* it = new (aPresShell) nsMathMLmrowFrame;
00063   if (nsnull == it) {
00064     return NS_ERROR_OUT_OF_MEMORY;
00065   }
00066   *aNewFrame = it;  
00067   return NS_OK;
00068 }
00069 
00070 nsMathMLmrowFrame::nsMathMLmrowFrame()
00071 {
00072 }
00073 
00074 nsMathMLmrowFrame::~nsMathMLmrowFrame()
00075 {
00076 }
00077 
00078 NS_IMETHODIMP
00079 nsMathMLmrowFrame::InheritAutomaticData(nsIFrame* aParent)
00080 {
00081   // let the base class get the default from our parent
00082   nsMathMLContainerFrame::InheritAutomaticData(aParent);
00083 
00084   mPresentationData.flags |= NS_MATHML_STRETCH_ALL_CHILDREN_VERTICALLY;
00085 
00086   return NS_OK;
00087 }