116 lines
4.1 KiB
C++
116 lines
4.1 KiB
C++
/* ***** 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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*
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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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#include "nsCOMPtr.h"
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#include "nsFrame.h"
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#include "nsPresContext.h"
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#include "nsUnitConversion.h"
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#include "nsStyleContext.h"
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#include "nsStyleConsts.h"
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#include "nsIRenderingContext.h"
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#include "nsIFontMetrics.h"
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#include "nsMathMLmrowFrame.h"
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//
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// <mrow> -- horizontally group any number of subexpressions - implementation
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//
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nsIFrame*
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NS_NewMathMLmrowFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
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{
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return new (aPresShell) nsMathMLmrowFrame(aContext);
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}
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nsMathMLmrowFrame::~nsMathMLmrowFrame()
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{
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}
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NS_IMETHODIMP
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nsMathMLmrowFrame::InheritAutomaticData(nsIFrame* aParent)
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{
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// let the base class get the default from our parent
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nsMathMLContainerFrame::InheritAutomaticData(aParent);
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mPresentationData.flags |= NS_MATHML_STRETCH_ALL_CHILDREN_VERTICALLY;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsMathMLmrowFrame::AttributeChanged(PRInt32 aNameSpaceID,
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nsIAtom* aAttribute,
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PRInt32 aModType)
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{
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// Special for <mtable>: In the frame construction code, we also use
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// this frame class as a wrapper for mtable. Hence, we should pass the
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// notification to the real mtable
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if (mContent->Tag() == nsMathMLAtoms::mtable_) {
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nsIFrame* frame = mFrames.FirstChild();
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for ( ; frame; frame = frame->GetFirstChild(nsnull)) {
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// drill down to the real mtable
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if (frame->GetType() == nsLayoutAtoms::tableOuterFrame)
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return frame->AttributeChanged(aNameSpaceID, aAttribute, aModType);
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}
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NS_NOTREACHED("mtable wrapper without the real table frame");
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}
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return nsMathMLContainerFrame::AttributeChanged(aNameSpaceID, aAttribute, aModType);
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}
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nsIFrame*
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nsMathMLmrowFrame::GetContentInsertionFrame()
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{
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// Special for <mtable>: In the frame construction code, we also use
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// this frame class as a wrapper for mtable. Hence, if we are asked
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// for the insertion frame in the context where we are such a wrapper,
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// we should return the real frame intended for mtable
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if (mContent->Tag() == nsMathMLAtoms::mtable_) {
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nsIFrame* frame = mFrames.FirstChild();
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for ( ; frame; frame = frame->GetFirstChild(nsnull)) {
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// drill down to the real mtable
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if (frame->GetType() == nsLayoutAtoms::tableOuterFrame)
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return frame->GetContentInsertionFrame();
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}
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NS_NOTREACHED("mtable wrapper without the real table frame");
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}
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return nsMathMLContainerFrame::GetContentInsertionFrame();
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}
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