layout/mathml/nsMathMLmsubFrame.h

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* This Source Code Form is subject to the terms of the Mozilla Public
   3  * License, v. 2.0. If a copy of the MPL was not distributed with this
   4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   5
   6 #ifndef nsMathMLmsubFrame_h___
   7 #define nsMathMLmsubFrame_h___
   8
   9 #include "nsCOMPtr.h"
  10 #include "nsMathMLContainerFrame.h"
  11
  12 //
  13 // <msub> -- attach a subscript to a base
  14 //
  15
  16 class nsMathMLmsubFrame : public nsMathMLContainerFrame {
  17 public:
  18   NS_DECL_FRAMEARENA_HELPERS
  19
  20   friend nsIFrame* NS_NewMathMLmsubFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
  21
  22   NS_IMETHOD
  23   TransmitAutomaticData();
  24
  25   virtual nsresult
  26   Place(nsRenderingContext& aRenderingContext,
  27         bool                 aPlaceOrigin,
  28         nsHTMLReflowMetrics& aDesiredSize);
  29
  30   static nsresult
  31   PlaceSubScript (nsPresContext*      aPresContext,
  32                   nsRenderingContext& aRenderingContext,
  33                   bool                 aPlaceOrigin,
  34                   nsHTMLReflowMetrics& aDesiredSize,
  35                   nsMathMLContainerFrame* aForFrame,
  36                   nscoord              aUserSubScriptShift,
  37                   nscoord              aScriptSpace);
  38
  39  protected:
  40   nsMathMLmsubFrame(nsStyleContext* aContext) : nsMathMLContainerFrame(aContext) {}
  41   virtual ~nsMathMLmsubFrame();
  42
  43   virtual int GetSkipSides() const { return 0; }
  44 };
  45
  46 #endif /* nsMathMLmsubFrame_h___ */