*/
#include "config.h"
-
#include "core/rendering/svg/RenderSVGResourceFilter.h"
#include "core/dom/ElementTraversal.h"
-#include "core/frame/Settings.h"
-#include "core/rendering/svg/RenderSVGResourceFilterPrimitive.h"
-#include "core/rendering/svg/SVGRenderingContext.h"
#include "core/svg/SVGFilterPrimitiveStandardAttributes.h"
-#include "platform/graphics/UnacceleratedImageBufferSurface.h"
+#include "platform/graphics/GraphicsContext.h"
#include "platform/graphics/filters/SkiaImageFilterBuilder.h"
#include "platform/graphics/filters/SourceAlpha.h"
#include "platform/graphics/filters/SourceGraphic.h"
namespace blink {
-const RenderSVGResourceType RenderSVGResourceFilter::s_resourceType = FilterResourceType;
-
RenderSVGResourceFilter::RenderSVGResourceFilter(SVGFilterElement* node)
: RenderSVGResourceContainer(node)
{
RenderSVGResourceFilter::~RenderSVGResourceFilter()
{
+}
+
+void RenderSVGResourceFilter::destroy()
+{
m_filter.clear();
+ RenderSVGResourceContainer::destroy();
}
bool RenderSVGResourceFilter::isChildAllowed(RenderObject* child, RenderStyle*) const
{
ASSERT(client);
- if (FilterData* filterData = m_filter.get(client)) {
- if (filterData->savedContext)
- filterData->state = FilterData::MarkedForRemoval;
- else
- m_filter.remove(client);
- }
+ m_filter.remove(client);
markClientForInvalidation(client, markForInvalidation ? BoundariesInvalidation : ParentOnlyInvalidation);
}
return builder.release();
}
-void RenderSVGResourceFilter::adjustScaleForMaximumImageSize(const FloatSize& size, FloatSize& filterScale)
-{
- FloatSize scaledSize(size);
- scaledSize.scale(filterScale.width(), filterScale.height());
- float scaledArea = scaledSize.width() * scaledSize.height();
-
- if (scaledArea <= FilterEffect::maxFilterArea())
- return;
-
- // If area of scaled size is bigger than the upper limit, adjust the scale
- // to fit.
- filterScale.scale(sqrt(FilterEffect::maxFilterArea() / scaledArea));
-}
-
-static bool createImageBuffer(const Filter* filter, OwnPtr<ImageBuffer>& imageBuffer)
-{
- IntRect paintRect = filter->sourceImageRect();
- // Don't create empty ImageBuffers.
- if (paintRect.isEmpty())
- return false;
-
- OwnPtr<ImageBufferSurface> surface = adoptPtr(new UnacceleratedImageBufferSurface(paintRect.size()));
- if (!surface->isValid())
- return false;
- OwnPtr<ImageBuffer> image = ImageBuffer::create(surface.release());
-
- GraphicsContext* imageContext = image->context();
- ASSERT(imageContext);
-
- imageContext->translate(-paintRect.x(), -paintRect.y());
- imageContext->concatCTM(filter->absoluteTransform());
- imageBuffer = image.release();
- return true;
-}
-
static void beginDeferredFilter(GraphicsContext* context, FilterData* filterData)
{
context->beginRecording(filterData->boundaries);
+ context->setShouldSmoothFonts(false);
// We pass the boundaries to SkPictureImageFilter so it knows the
// world-space position of the filter primitives. It gets them
// from the DisplayList, which also applies the inverse translate
context->restore();
}
-bool RenderSVGResourceFilter::applyResource(RenderObject* object, RenderStyle*, GraphicsContext*& context, unsigned short resourceMode)
+bool RenderSVGResourceFilter::prepareEffect(RenderObject* object, GraphicsContext*& context)
{
ASSERT(object);
ASSERT(context);
- ASSERT_UNUSED(resourceMode, resourceMode == ApplyToDefaultMode);
clearInvalidationMask();
- bool deferredFiltersEnabled = object->document().settings()->deferredFiltersEnabled();
if (m_filter.contains(object)) {
FilterData* filterData = m_filter.get(object);
- if (filterData->state == FilterData::PaintingSource || filterData->state == FilterData::Applying)
+ if (filterData->state == FilterData::PaintingSource)
filterData->state = FilterData::CycleDetected;
- return false; // Already built, or we're in a cycle, or we're marked for removal. Regardless, just do nothing more now.
+ return false; // Already built, or we're in a cycle. Regardless, just do nothing more now.
}
OwnPtr<FilterData> filterData(adoptPtr(new FilterData));
if (filterData->boundaries.isEmpty())
return false;
- // Determine absolute transformation matrix for filter.
- AffineTransform absoluteTransform;
- SVGRenderingContext::calculateDeviceSpaceTransformation(object, absoluteTransform);
- if (!absoluteTransform.isInvertible())
- return false;
-
- // Filters cannot handle a full transformation, only scales in each direction.
- FloatSize filterScale;
-
- // Calculate the scale factor for the filter.
- // Also see http://www.w3.org/TR/SVG/filters.html#FilterEffectsRegion
- if (filterElement->hasAttribute(SVGNames::filterResAttr)) {
- // If resolution is specified, scale to match it.
- filterScale = FloatSize(
- filterElement->filterResX()->currentValue()->value() / filterData->boundaries.width(),
- filterElement->filterResY()->currentValue()->value() / filterData->boundaries.height());
- } else {
- // Otherwise, use the scale of the absolute transform.
- filterScale = FloatSize(absoluteTransform.xScale(), absoluteTransform.yScale());
- }
- // The size of the scaled filter boundaries shouldn't be bigger than kMaxFilterSize.
- // Intermediate filters are limited by the filter boundaries so they can't be bigger than this.
- adjustScaleForMaximumImageSize(filterData->boundaries.size(), filterScale);
-
filterData->drawingRegion = object->strokeBoundingBox();
filterData->drawingRegion.intersect(filterData->boundaries);
- FloatRect absoluteDrawingRegion = filterData->drawingRegion;
- if (!deferredFiltersEnabled)
- absoluteDrawingRegion.scale(filterScale.width(), filterScale.height());
-
- IntRect intDrawingRegion = enclosingIntRect(absoluteDrawingRegion);
+ IntRect intDrawingRegion = enclosingIntRect(filterData->drawingRegion);
// Create the SVGFilter object.
bool primitiveBoundingBoxMode = filterElement->primitiveUnits()->currentValue()->enumValue() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX;
- filterData->shearFreeAbsoluteTransform = AffineTransform();
- if (!deferredFiltersEnabled)
- filterData->shearFreeAbsoluteTransform.scale(filterScale.width(), filterScale.height());
- filterData->filter = SVGFilter::create(filterData->shearFreeAbsoluteTransform, intDrawingRegion, targetBoundingBox, filterData->boundaries, primitiveBoundingBoxMode);
+ filterData->filter = SVGFilter::create(intDrawingRegion, targetBoundingBox, filterData->boundaries, primitiveBoundingBoxMode);
// Create all relevant filter primitives.
filterData->builder = buildPrimitives(filterData->filter.get());
lastEffect->determineFilterPrimitiveSubregion(ClipToFilterRegion);
- if (deferredFiltersEnabled) {
- FilterData* data = filterData.get();
- m_filter.set(object, filterData.release());
- beginDeferredFilter(context, data);
- return true;
- }
-
- // If the drawingRegion is empty, we have something like <g filter=".."/>.
- // Even if the target objectBoundingBox() is empty, we still have to draw the last effect result image in postApplyResource.
- if (filterData->drawingRegion.isEmpty()) {
- ASSERT(!m_filter.contains(object));
- filterData->savedContext = context;
- m_filter.set(object, filterData.release());
- return false;
- }
-
- OwnPtr<ImageBuffer> sourceGraphic;
- if (!createImageBuffer(filterData->filter.get(), sourceGraphic)) {
- ASSERT(!m_filter.contains(object));
- filterData->savedContext = context;
- m_filter.set(object, filterData.release());
- return false;
- }
-
- GraphicsContext* sourceGraphicContext = sourceGraphic->context();
- ASSERT(sourceGraphicContext);
-
- filterData->sourceGraphicBuffer = sourceGraphic.release();
- filterData->savedContext = context;
-
- context = sourceGraphicContext;
-
- ASSERT(!m_filter.contains(object));
+ FilterData* data = filterData.get();
m_filter.set(object, filterData.release());
-
+ beginDeferredFilter(context, data);
return true;
}
-void RenderSVGResourceFilter::postApplyResource(RenderObject* object, GraphicsContext*& context, unsigned short resourceMode, const Path*, const RenderSVGShape*)
+void RenderSVGResourceFilter::finishEffect(RenderObject* object, GraphicsContext*& context)
{
ASSERT(object);
ASSERT(context);
- ASSERT_UNUSED(resourceMode, resourceMode == ApplyToDefaultMode);
FilterData* filterData = m_filter.get(object);
if (!filterData)
return;
- bool deferredFiltersEnabled = object->document().settings()->deferredFiltersEnabled();
-
switch (filterData->state) {
- case FilterData::MarkedForRemoval:
- m_filter.remove(object);
- return;
-
case FilterData::CycleDetected:
- case FilterData::Applying:
- // We have a cycle if we are already applying the data.
- // This can occur due to FeImage referencing a source that makes use of the FEImage itself.
- // This is the first place we've hit the cycle, so set the state back to PaintingSource so the return stack
- // will continue correctly.
+ // applyResource detected a cycle. This can occur due to FeImage
+ // referencing a source that makes use of the FEImage itself. This is
+ // the first place we've hit the cycle, so set the state back to
+ // PaintingSource so the return stack will continue correctly.
filterData->state = FilterData::PaintingSource;
return;
case FilterData::PaintingSource:
- if (deferredFiltersEnabled) {
- endDeferredFilter(context, filterData);
- } else {
- if (!filterData->savedContext) {
- removeClientFromCache(object);
- return;
- }
-
- context = filterData->savedContext;
- filterData->savedContext = 0;
- }
+ endDeferredFilter(context, filterData);
break;
case FilterData::Built: { } // Empty
}
- if (deferredFiltersEnabled) {
- drawDeferredFilter(context, filterData, toSVGFilterElement(element()));
- filterData->state = FilterData::Built;
- return;
- }
-
- FilterEffect* lastEffect = filterData->builder->lastEffect();
-
- if (lastEffect && !filterData->boundaries.isEmpty() && !lastEffect->filterPrimitiveSubregion().isEmpty()) {
- // This is the real filtering of the object. It just needs to be called on the
- // initial filtering process. We just take the stored filter result on a
- // second drawing.
- if (filterData->state != FilterData::Built)
- filterData->filter->setSourceImage(filterData->sourceGraphicBuffer.release());
-
- // Always true if filterData is just built (filterData->state == FilterData::Built).
- if (!lastEffect->hasResult()) {
- filterData->state = FilterData::Applying;
- lastEffect->apply();
- lastEffect->correctFilterResultIfNeeded();
- lastEffect->transformResultColorSpace(ColorSpaceDeviceRGB);
- }
- filterData->state = FilterData::Built;
-
- ImageBuffer* resultImage = lastEffect->asImageBuffer();
- if (resultImage) {
- context->drawImageBuffer(resultImage, filterData->filter->mapAbsoluteRectToLocalRect(lastEffect->absolutePaintRect()));
- }
- }
- filterData->sourceGraphicBuffer.clear();
+ drawDeferredFilter(context, filterData, toSVGFilterElement(element()));
+ filterData->state = FilterData::Built;
}
FloatRect RenderSVGResourceFilter::resourceBoundingBox(const RenderObject* object)
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