gecko-dev/layout/mathml/nsMathMLmphantomFrame.cpp

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 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
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 * The Original Code is Mozilla MathML Project.
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 * Contributor(s):
 *   Roger B. Sidje <rbs@maths.uq.edu.au>
 *   David J. Fiddes <D.J.Fiddes@hw.ac.uk>
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#include "nsCOMPtr.h"
#include "nsFrame.h"
#include "nsPresContext.h"
#include "nsStyleConsts.h"
#include "nsIRenderingContext.h"
#include "nsIFontMetrics.h"

#include "nsMathMLmphantomFrame.h"

//
// <mphantom> -- make content invisible but preserve its size
//

nsIFrame*
NS_NewMathMLmphantomFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
{
  return new (aPresShell) nsMathMLmphantomFrame(aContext);
}

NS_IMPL_FRAMEARENA_HELPERS(nsMathMLmphantomFrame)

nsMathMLmphantomFrame::~nsMathMLmphantomFrame()
{
}

NS_IMETHODIMP
nsMathMLmphantomFrame::InheritAutomaticData(nsIFrame* aParent)
{
  // let the base class get the default from our parent
  nsMathMLContainerFrame::InheritAutomaticData(aParent);

  mPresentationData.flags |= NS_MATHML_STRETCH_ALL_CHILDREN_VERTICALLY;

  return NS_OK;
}