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Continuing to factor handlers to rebuild automatic data during dynamic changes

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git-svn-id: svn://10.0.0.236/trunk@113515 18797224-902f-48f8-a5cc-f745e15eee43
This commit is contained in:
rbs%maths.uq.edu.au
2002-02-02 05:43:03 +00:00
parent 1cc6cc00c4
commit 2ff8bf1765
9 changed files with 32 additions and 86 deletions
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23
mozilla/layout/mathml/base/src/nsMathMLmstyleFrame.cpp
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@@ -118,30 +118,15 @@ nsMathMLmstyleFrame::InheritAutomaticData(nsIPresContext* aPresContext,
return NS_OK;
}
// mstyle needs special care for its scriptlevel and displaystyle attributes
NS_IMETHODIMP
nsMathMLmstyleFrame::TransmitAutomaticData(nsIPresContext* aPresContext)
{
mEmbellishData.flags |= NS_MATHML_STRETCH_ALL_CHILDREN_VERTICALLY;
// figure out our current presentation data
nsPresentationData oldData = mPresentationData;
InheritAutomaticData(aPresContext, mParent);
// propagate to our children if something changed
if (oldData.flags != mPresentationData.flags ||
oldData.scriptLevel != mPresentationData.scriptLevel) {
PRUint32 whichFlags = NS_MATHML_DISPLAYSTYLE;
PRUint32 newValues = NS_MATHML_DISPLAYSTYLE & mPresentationData.flags;
if (newValues == (oldData.flags & NS_MATHML_DISPLAYSTYLE)) {
newValues = 0;
whichFlags = 0;
}
// use the base method here because we really want to reflect any updates
nsMathMLContainerFrame::UpdatePresentationDataFromChildAt(aPresContext, 0, -1,
mPresentationData.scriptLevel - oldData.scriptLevel, newValues, whichFlags);
}
// Nothing particular to do here, the values that we computed in
// InheritAutomaticData() are the values that we wanted to pass to
// our children. Our children would have inherited these values in
// their own InheritAutomaticData() as we descended the frame tree.
return NS_OK;
}