layout/mathml/base/src/nsMathMLmsubFrame.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* ***** BEGIN LICENSE BLOCK *****
   3  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   4  *
   5  * The contents of this file are subject to the Mozilla Public License Version
   6  * 1.1 (the "License"); you may not use this file except in compliance with
   7  * the License. You may obtain a copy of the License at
   8  * http://www.mozilla.org/MPL/
   9  *
  10  * Software distributed under the License is distributed on an "AS IS" basis,
  11  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  12  * for the specific language governing rights and limitations under the
  13  * License.
  14  *
  15  * The Original Code is Mozilla MathML Project.
  16  *
  17  * The Initial Developer of the Original Code is
  18  * The University Of Queensland.
  19  * Portions created by the Initial Developer are Copyright (C) 1999
  20  * the Initial Developer. All Rights Reserved.
  21  *
  22  * Contributor(s):
  23  *   Roger B. Sidje <rbs@maths.uq.edu.au>
  24  *   David J. Fiddes <D.J.Fiddes@hw.ac.uk>
  25  *   Shyjan Mahamud <mahamud@cs.cmu.edu> (added TeX rendering rules)
  26  *
  27  * Alternatively, the contents of this file may be used under the terms of
  28  * either of the GNU General Public License Version 2 or later (the "GPL"),
  29  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  30  * in which case the provisions of the GPL or the LGPL are applicable instead
  31  * of those above. If you wish to allow use of your version of this file only
  32  * under the terms of either the GPL or the LGPL, and not to allow others to
  33  * use your version of this file under the terms of the MPL, indicate your
  34  * decision by deleting the provisions above and replace them with the notice
  35  * and other provisions required by the GPL or the LGPL. If you do not delete
  36  * the provisions above, a recipient may use your version of this file under
  37  * the terms of any one of the MPL, the GPL or the LGPL.
  38  *
  39  * ***** END LICENSE BLOCK ***** */
  40
  41 #ifndef nsMathMLmsubFrame_h___
  42 #define nsMathMLmsubFrame_h___
  43
  44 #include "nsCOMPtr.h"
  45 #include "nsMathMLContainerFrame.h"
  46
  47 //
  48 // <msub> -- attach a subscript to a base
  49 //
  50
  51 class nsMathMLmsubFrame : public nsMathMLContainerFrame {
  52 public:
  53   friend nsIFrame* NS_NewMathMLmsubFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
  54
  55   NS_IMETHOD
  56   TransmitAutomaticData();
  57
  58   virtual nsresult
  59   Place(nsIRenderingContext& aRenderingContext,
  60         PRBool               aPlaceOrigin,
  61         nsHTMLReflowMetrics& aDesiredSize);
  62
  63   static nsresult
  64   PlaceSubScript (nsPresContext*      aPresContext,
  65                   nsIRenderingContext& aRenderingContext,
  66                   PRBool               aPlaceOrigin,
  67                   nsHTMLReflowMetrics& aDesiredSize,
  68                   nsMathMLContainerFrame* aForFrame,
  69                   nscoord              aUserSubScriptShift,
  70                   nscoord              aScriptSpace);
  71
  72  protected:
  73   nsMathMLmsubFrame(nsStyleContext* aContext) : nsMathMLContainerFrame(aContext) {}
  74   virtual ~nsMathMLmsubFrame();
  75
  76   virtual PRIntn GetSkipSides() const { return 0; }
  77 };
  78
  79 #endif /* nsMathMLmsubFrame_h___ */