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Bug 933567 - Implement MaskSurface for Skia. r=mattwoodrow

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This commit is contained in:
Kevin Simons 2013-11-25 09:20:56 -05:00
parent 62c4edbec0
commit b95c755355
2 changed files with 26 additions and 1 deletions
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25
gfx/2d/DrawTargetSkia.cpp
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@ -621,6 +621,31 @@ DrawTargetSkia::Mask(const Pattern &aSource,
mCanvas->drawPath(path, paint.mPaint);
}
void
DrawTargetSkia::MaskSurface(const Pattern &aSource,
SourceSurface *aMask,
Point aOffset,
const DrawOptions &aOptions)
{
MarkChanged();
AutoPaintSetup paint(mCanvas.get(), aOptions, aSource);
SkPaint maskPaint;
SetPaintPattern(maskPaint, SurfacePattern(aMask, EXTEND_CLAMP));
SkMatrix transform = maskPaint.getShader()->getLocalMatrix();
transform.postTranslate(SkFloatToScalar(aOffset.x), SkFloatToScalar(aOffset.y));
maskPaint.getShader()->setLocalMatrix(transform);
SkLayerRasterizer *raster = new SkLayerRasterizer();
raster->addLayer(maskPaint);
SkSafeUnref(paint.mPaint.setRasterizer(raster));
IntSize size = aMask->GetSize();
Rect rect = Rect(aOffset.x, aOffset.y, size.width, size.height);
mCanvas->drawRect(RectToSkRect(rect), paint.mPaint);
}
TemporaryRef<SourceSurface>
DrawTargetSkia::CreateSourceSurfaceFromData(unsigned char *aData,
const IntSize &aSize,

2
gfx/2d/DrawTargetSkia.h
View File

@ -78,7 +78,7 @@ public:
virtual void MaskSurface(const Pattern &aSource,
SourceSurface *aMask,
Point aOffset,
const DrawOptions &aOptions = DrawOptions()) { MOZ_ASSERT(0); };
const DrawOptions &aOptions = DrawOptions());
virtual void PushClip(const Path *aPath);
virtual void PushClipRect(const Rect& aRect);
virtual void PopClip();