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Bug 1058713 - Don't attempt to create a zero-sized CGContext for titlebar buttons. r=smichaud

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This commit is contained in:
Markus Stange 2014-08-28 02:16:25 +02:00
parent 91aec94103
commit 4a057edfbd
1 changed files with 5 additions and 0 deletions
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5
widget/cocoa/nsChildView.mm
View File

@ -2364,6 +2364,11 @@ nsChildView::UpdateTitlebarCGContext()
dirtyTitlebarRegion.And(mDirtyTitlebarRegion, mTitlebarRect); dirtyTitlebarRegion.And(mDirtyTitlebarRegion, mTitlebarRect);
mDirtyTitlebarRegion.SetEmpty(); mDirtyTitlebarRegion.SetEmpty();
if (mTitlebarRect.IsEmpty()) {
ReleaseTitlebarCGContext();
return;
}
nsIntSize texSize = RectTextureImage::TextureSizeForSize(mTitlebarRect.Size()); nsIntSize texSize = RectTextureImage::TextureSizeForSize(mTitlebarRect.Size());
if (!mTitlebarCGContext || if (!mTitlebarCGContext ||
CGBitmapContextGetWidth(mTitlebarCGContext) != size_t(texSize.width) || CGBitmapContextGetWidth(mTitlebarCGContext) != size_t(texSize.width) ||