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Issue #438: Check for non-rectilinear transforms

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wolfbeast 2019-08-14 15:09:34 +02:00 • committed by Roy Tam
commit c2b844077e
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3
layout/svg/nsSVGOuterSVGFrame.cpp
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@ -1006,6 +1006,9 @@ nsSVGOuterSVGAnonChildFrame::IsSVGTransformed(Matrix* aOwnTransform,
if (ownMatrix.HasNonTranslation()) {
// Note: viewBox, currentScale and currentTranslate should only
// produce a rectilinear transform.
MOZ_ASSERT(ownMatrix.IsRectilinear(),
"Non-rectilinear transform will break the following logic");
// The nsDisplayTransform code will apply this transform to our frame,
// including to our frame position. We don't want our frame position to
// be scaled though, so we need to correct for that in the transform.