void SVGFilterRecordingContext::endContent(FilterData* filterData)
{
ASSERT(filterData->m_state == FilterData::RecordingContent);
SourceGraphic* sourceGraphic = filterData->filter->sourceGraphic();
ASSERT(sourceGraphic);
GraphicsContext* context = &paintingContext();
// Use the context that contains the filtered content.
ASSERT(m_paintController);
ASSERT(m_context);
context = m_context.get();
context->beginRecording(filterData->filter->filterRegion());
m_paintController->commitNewDisplayItems();
m_paintController->paintArtifact().replay(*context);
sourceGraphic->setPicture(context->endRecording());
// Content is cached by the source graphic so temporaries can be freed.
m_paintController = nullptr;
m_context = nullptr;
filterData->m_state = FilterData::ReadyToPaint;
}
PassRefPtr<SkImageFilter> FEImage::createImageFilterForRenderer(RenderObject* renderer, SkiaImageFilterBuilder* builder)
{
FloatRect dstRect = filterPrimitiveSubregion();
AffineTransform transform;
SVGElement* contextNode = toSVGElement(renderer->node());
if (contextNode->hasRelativeLengths()) {
SVGLengthContext lengthContext(contextNode);
FloatSize viewportSize;
// If we're referencing an element with percentage units, eg. <rect with="30%"> those values were resolved against the viewport.
// Build up a transformation that maps from the viewport space to the filter primitive subregion.
if (lengthContext.determineViewport(viewportSize))
transform = makeMapBetweenRects(FloatRect(FloatPoint(), viewportSize), dstRect);
} else {
transform.translate(dstRect.x(), dstRect.y());
}
GraphicsContext* context = builder->context();
if (!context)
return adoptRef(SkBitmapSource::Create(SkBitmap()));
AffineTransform contentTransformation;
context->save();
context->beginRecording(FloatRect(FloatPoint(), dstRect.size()));
context->concatCTM(transform);
SVGRenderingContext::renderSubtree(context, renderer, contentTransformation);
RefPtr<DisplayList> displayList = context->endRecording();
context->restore();
RefPtr<SkImageFilter> result = adoptRef(SkPictureImageFilter::Create(displayList->picture(), dstRect));
return result.release();
}
DrawingRecorder::DrawingRecorder(GraphicsContext& context, const DisplayItemClientWrapper& displayItemClient, DisplayItem::Type displayItemType, const FloatRect& cullRect)
: m_context(context)
, m_displayItemClient(displayItemClient)
, m_displayItemType(displayItemType)
#if ENABLE(ASSERT)
, m_displayItemPosition(m_context.displayItemList()->newDisplayItems().size())
, m_underInvalidationCheckingMode(DrawingDisplayItem::CheckPicture)
#endif
{
ASSERT(context.displayItemList());
if (context.displayItemList()->displayItemConstructionIsDisabled())
return;
// Must check DrawingRecorder::useCachedDrawingIfPossible before creating the DrawingRecorder.
ASSERT((RuntimeEnabledFeatures::slimmingPaintOffsetCachingEnabled() && context.displayItemList()->paintOffsetWasInvalidated(displayItemClient.displayItemClient()))
|| RuntimeEnabledFeatures::slimmingPaintUnderInvalidationCheckingEnabled()
|| !useCachedDrawingIfPossible(m_context, m_displayItemClient, m_displayItemType));
ASSERT(DisplayItem::isDrawingType(displayItemType));
#if ENABLE(ASSERT)
context.setInDrawingRecorder(true);
#endif
context.beginRecording(cullRect);
#if ENABLE(ASSERT)
if (RuntimeEnabledFeatures::slimmingPaintStrictCullRectClippingEnabled()) {
// Skia depends on the cull rect containing all of the display item commands. When strict
// cull rect clipping is enabled, make this explicit. This allows us to identify potential
// incorrect cull rects that might otherwise be masked due to Skia internal optimizations.
context.save();
IntRect verificationClip = enclosingIntRect(cullRect);
// Expand the verification clip by one pixel to account for Skia's SkCanvas::getClipBounds()
// expansion, used in testing cull rects.
// TODO(schenney) This is not the best place to do this. Ideally, we would expand by one pixel
// in device (pixel) space, but to do that we would need to add the verification mode to Skia.
verificationClip.inflate(1);
context.clipRect(verificationClip, NotAntiAliased, SkRegion::kIntersect_Op);
}
#endif
}
