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Bug 883416 (Part 3) - Coalesce invalidations in RasterImage using a listening flag. r=dholbert

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--HG--
extra : rebase_source : db6a580cacd0f0556c5e38ba1b4fb9924ecf9dfd
This commit is contained in:
Seth Fowler 2013-06-21 13:32:34 -07:00
parent ef28bbb58b
commit 8ec6ea7e2b
1 changed files with 17 additions and 4 deletions
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21
image/src/VectorImage.cpp
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@ -39,9 +39,10 @@ class SVGRootRenderingObserver MOZ_FINAL : public nsSVGRenderingObserver {
public:
SVGRootRenderingObserver(SVGDocumentWrapper* aDocWrapper,
VectorImage* aVectorImage)
: nsSVGRenderingObserver(),
mDocWrapper(aDocWrapper),
mVectorImage(aVectorImage)
: nsSVGRenderingObserver()
, mDocWrapper(aDocWrapper)
, mVectorImage(aVectorImage)
, mHonoringInvalidations(true)
{
MOZ_ASSERT(mDocWrapper, "Need a non-null SVG document wrapper");
MOZ_ASSERT(mVectorImage, "Need a non-null VectorImage");
@ -59,6 +60,11 @@ public:
StopListening();
}
void ResumeHonoringInvalidations()
{
mHonoringInvalidations = true;
}
protected:
virtual Element* GetTarget() MOZ_OVERRIDE
{
@ -70,13 +76,16 @@ protected:
Element* elem = GetTarget();
MOZ_ASSERT(elem, "missing root SVG node");
if (!mDocWrapper->ShouldIgnoreInvalidation()) {
if (mHonoringInvalidations && !mDocWrapper->ShouldIgnoreInvalidation()) {
nsIFrame* frame = elem->GetPrimaryFrame();
if (!frame || frame->PresContext()->PresShell()->IsDestroying()) {
// We're being destroyed. Bail out.
return;
}
// Ignore further invalidations until we draw.
mHonoringInvalidations = false;
mVectorImage->InvalidateObserver();
}
@ -91,6 +100,7 @@ protected:
// Private data
const nsRefPtr<SVGDocumentWrapper> mDocWrapper;
VectorImage* const mVectorImage; // Raw pointer because it owns me.
bool mHonoringInvalidations;
};
class SVGParseCompleteListener MOZ_FINAL : public nsStubDocumentObserver {
@ -730,6 +740,9 @@ VectorImage::Draw(gfxContext* aContext,
gfxASurface::ImageFormatARGB32, aFilter,
aFlags);
MOZ_ASSERT(mRenderingObserver, "Should have a rendering observer by now");
mRenderingObserver->ResumeHonoringInvalidations();
return NS_OK;
}