layout/mathml/nsMathMLmspaceFrame.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 nsMathMLmspaceFrame_h___
   7 #define nsMathMLmspaceFrame_h___
   8
   9 #include "mozilla/Attributes.h"
  10 #include "nsMathMLContainerFrame.h"
  11
  12 //
  13 // <mspace> -- space
  14 //
  15
  16 class nsMathMLmspaceFrame : public nsMathMLContainerFrame {
  17 public:
  18   NS_DECL_FRAMEARENA_HELPERS
  19
  20   friend nsIFrame* NS_NewMathMLmspaceFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
  21
  22   NS_IMETHOD
  23   TransmitAutomaticData() MOZ_OVERRIDE {
  24     // The REC defines the following elements to be space-like:
  25     // * an mtext, mspace, maligngroup, or malignmark element;
  26     mPresentationData.flags |= NS_MATHML_SPACE_LIKE;
  27     return NS_OK;
  28   }
  29
  30   virtual bool IsLeaf() const MOZ_OVERRIDE;
  31
  32   virtual void
  33   Reflow(nsPresContext*          aPresContext,
  34          nsHTMLReflowMetrics&     aDesiredSize,
  35          const nsHTMLReflowState& aReflowState,
  36          nsReflowStatus&          aStatus) MOZ_OVERRIDE;
  37
  38 protected:
  39   explicit nsMathMLmspaceFrame(nsStyleContext* aContext) : nsMathMLContainerFrame(aContext) {}
  40   virtual ~nsMathMLmspaceFrame();
  41
  42   virtual nsresult
  43   MeasureForWidth(nsRenderingContext& aRenderingContext,
  44                   nsHTMLReflowMetrics& aDesiredSize) MOZ_OVERRIDE;
  45
  46 private:
  47   nscoord mWidth;
  48   nscoord mHeight;
  49   nscoord mDepth;
  50
  51   // helper method to initialize our member data
  52   void
  53   ProcessAttributes(nsPresContext* aPresContext);
  54 };
  55
  56 #endif /* nsMathMLmspaceFrame_h___ */