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issue #908 - implement missing parts of CSS mask

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yami 2018-12-16 16:17:20 +01:00 • committed by Roy Tam
commit b5376e63c5
28 changed files with 574 additions and 449 deletions
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21
layout/svg/nsSVGUtils.cpp
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@ -514,26 +514,7 @@ nsSVGUtils::DetermineMaskUsage(nsIFrame* aFrame, bool aHandleOpacity,
nsTArray<nsSVGMaskFrame*> maskFrames = effectProperties.GetMaskFrames();
#ifdef MOZ_ENABLE_MASK_AS_SHORTHAND
// For a HTML doc:
// According to css-masking spec, always create a mask surface when we
// have any item in maskFrame even if all of those items are
// non-resolvable <mask-sources> or <images>, we still need to create a
// transparent black mask layer under this condition.
// For a SVG doc:
// SVG 1.1 say that if we fail to resolve a mask, we should draw the
// object unmasked.
aUsage.shouldGenerateMaskLayer =
(aFrame->GetStateBits() & NS_FRAME_SVG_LAYOUT)
? maskFrames.Length() == 1 && maskFrames[0]
: maskFrames.Length() > 0;
#else
// Since we do not support image mask so far, we should treat any
// unresolvable mask as no mask. Otherwise, any object with a valid image
// mask, e.g. url("xxx.png"), will become invisible just because we can not
// handle image mask correctly. (See bug 1294171)
aUsage.shouldGenerateMaskLayer = maskFrames.Length() == 1 && maskFrames[0];
#endif
aUsage.shouldGenerateMaskLayer = (maskFrames.Length() > 0);
bool isOK = effectProperties.HasNoFilterOrHasValidFilter();
nsSVGClipPathFrame *clipPathFrame = effectProperties.GetClipPathFrame(&isOK);