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Avoid flushing during media query evaluation. (Bug 507457) r=bzbarsky

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This commit is contained in:
L. David Baron 2009-08-04 15:39:53 -07:00
parent f14734d0e5
commit a8f1170400
1 changed files with 7 additions and 12 deletions
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19
layout/style/nsMediaFeatures.cpp
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@ -90,20 +90,15 @@ GetHeight(nsPresContext* aPresContext, nsCSSValue& aResult)
return NS_OK;
}
static nsIDeviceContext*
inline static nsIDeviceContext*
GetDeviceContextFor(nsPresContext* aPresContext)
{
// Do this dance rather than aPresContext->DeviceContext() to get
// things right in multi-monitor situations.
// (It's not clear if this is really needed for GetDepth and GetColor,
// but do it anyway.)
nsIDeviceContext* ctx = nsLayoutUtils::GetDeviceContextForScreenInfo(
nsCOMPtr<nsIDocShell>(do_QueryInterface(
nsCOMPtr<nsISupports>(aPresContext->GetContainer()))));
if (!ctx) {
ctx = aPresContext->DeviceContext();
}
return ctx;
// It would be nice to call
// nsLayoutUtils::GetDeviceContextForScreenInfo here, except for two
// things: (1) it can flush, and flushing is bad here, and (2) it
// doesn't really get us consistency in multi-monitor situations
// *anyway*.
return aPresContext->DeviceContext();
}
// A helper for three features below.