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Bug 1224736: When image size lookup fails in nsTreeBodyFrame::PaintImage, only fall back to use the full destRect if we've got a VectorImage. r=tn

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This commit is contained in:
Daniel Holbert 2016-01-11 17:56:39 -08:00
parent 286aaa9a52
commit 01d9ef364b
1 changed files with 11 additions and 2 deletions
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11
layout/xul/tree/nsTreeBodyFrame.cpp
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@ -3634,9 +3634,18 @@ nsTreeBodyFrame::PaintImage(int32_t aRowIndex,
imageDestSize));
} else {
// GetWidth/GetHeight failed, so we can't easily map a subregion of the
// source image onto the destination area. So, just draw the whole image.
// source image onto the destination area.
// * If this happens with a RasterImage, it probably means the image is
// in an error state, and we shouldn't draw anything. Hence, we leave
// wholeImageDest as an empty rect (its initial state).
// * If this happens with a VectorImage, it probably means the image has
// no explicit width or height attribute -- but we can still proceed and
// just treat the destination area as our whole SVG image area. Hence, we
// set wholeImageDest to the full destRect.
if (image->GetType() == imgIContainer::TYPE_VECTOR) {
wholeImageDest = destRect;
}
}
gfxContext* ctx = aRenderingContext.ThebesContext();
if (opacity != 1.0f) {