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Bug 1466613 - Prevent creation of DynamicImage instances that are excessively large. r=mstange

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Differential Revision: https://phabricator.services.mozilla.com/D11528

--HG--
extra : moz-landing-system : lando
This commit is contained in:
Kartikaya Gupta 2018-11-13 10:39:27 +00:00
parent 17eea57296
commit 76cb4247d3
1 changed files with 8 additions and 2 deletions
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10
layout/painting/nsImageRenderer.cpp
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@ -732,8 +732,13 @@ nsImageRenderer::DrawableForElement(const nsRect& aImageRect,
nsRect destRect = aImageRect - aImageRect.TopLeft();
nsIntSize roundedOut = destRect.ToOutsidePixels(appUnitsPerDevPixel).Size();
IntSize imageSize(roundedOut.width, roundedOut.height);
RefPtr<gfxDrawable> drawable =
nsSVGIntegrationUtils::DrawableFromPaintServer(
RefPtr<gfxDrawable> drawable;
SurfaceFormat format = aContext.GetDrawTarget()->GetFormat();
// Don't allow creating images that are too big
if (aContext.GetDrawTarget()->CanCreateSimilarDrawTarget(imageSize, format)) {
drawable = nsSVGIntegrationUtils::DrawableFromPaintServer(
mPaintServerFrame,
mForFrame,
mSize,
@ -741,6 +746,7 @@ nsImageRenderer::DrawableForElement(const nsRect& aImageRect,
aContext.GetDrawTarget(),
aContext.CurrentMatrixDouble(),
nsSVGIntegrationUtils::FLAG_SYNC_DECODE_IMAGES);
}
return drawable.forget();
}