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91 lines
3.4 KiB
C++
91 lines
3.4 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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*
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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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//
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// a helper frame class to wrap non-MathML frames so that foreign elements
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// (e.g., html:img) can mix better with other surrounding MathML markups
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//
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#include "nsCOMPtr.h"
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#include "nsHTMLParts.h"
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#include "nsFrame.h"
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#include "nsBlockFrame.h"
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#include "nsLineLayout.h"
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#include "nsPresContext.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 "nsMathMLForeignFrameWrapper.h"
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NS_QUERYFRAME_HEAD(nsMathMLForeignFrameWrapper)
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NS_QUERYFRAME_ENTRY(nsMathMLFrame)
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NS_QUERYFRAME_TAIL_INHERITING(nsBlockFrame)
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nsIFrame*
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NS_NewMathMLForeignFrameWrapper(nsIPresShell* aPresShell, nsStyleContext* aContext)
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{
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return new (aPresShell) nsMathMLForeignFrameWrapper(aContext);
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}
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NS_IMETHODIMP
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nsMathMLForeignFrameWrapper::Reflow(nsPresContext* aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus)
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{
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// Let the base class do the reflow
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nsresult rv = nsBlockFrame::Reflow(aPresContext, aDesiredSize, aReflowState, aStatus);
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mReference.x = 0;
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mReference.y = aDesiredSize.ascent;
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// just make-up a bounding metrics
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mBoundingMetrics.Clear();
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mBoundingMetrics.ascent = aDesiredSize.ascent;
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mBoundingMetrics.descent = aDesiredSize.height - aDesiredSize.ascent;
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mBoundingMetrics.width = aDesiredSize.width;
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mBoundingMetrics.leftBearing = 0;
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mBoundingMetrics.rightBearing = aDesiredSize.width;
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aDesiredSize.mBoundingMetrics = mBoundingMetrics;
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NS_FRAME_SET_TRUNCATION(aStatus, aReflowState, aDesiredSize);
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return rv;
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}
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