#if ENABLE(SVG)
#include "SVGRenderingContext.h"
+#include "BasicShapes.h"
#include "Frame.h"
#include "FrameView.h"
#include "RenderSVGResource.h"
#include "RenderSVGResourceClipper.h"
#include "RenderSVGResourceFilter.h"
#include "RenderSVGResourceMasker.h"
-#include "SVGImageBufferTools.h"
#include "SVGResources.h"
#include "SVGResourcesCache.h"
+static int kMaxImageBufferSize = 4096;
+
namespace WebCore {
static inline bool isRenderingMaskImage(RenderObject* object)
ASSERT(m_filter);
m_filter->postApplyResource(static_cast<RenderSVGShape*>(m_object), m_paintInfo->context, ApplyToDefaultMode, 0, 0);
m_paintInfo->context = m_savedContext;
+ m_paintInfo->rect = m_savedPaintRect;
}
#endif
}
}
+ ClipPathOperation* clipPathOperation = style->clipPath();
+ if (clipPathOperation && clipPathOperation->getOperationType() == ClipPathOperation::SHAPE) {
+ ShapeClipPathOperation* clipPath = static_cast<ShapeClipPathOperation*>(clipPathOperation);
+ m_paintInfo->context->clipPath(clipPath->path(object->objectBoundingBox()), clipPath->windRule());
+ }
+
SVGResources* resources = SVGResourcesCache::cachedResourcesForRenderObject(m_object);
if (!resources) {
#if ENABLE(FILTERS)
}
}
- if (RenderSVGResourceClipper* clipper = resources->clipper()) {
+ RenderSVGResourceClipper* clipper = resources->clipper();
+ if (!clipPathOperation && clipper) {
if (!clipper->applyResource(m_object, style, m_paintInfo->context, ApplyToDefaultMode))
return;
}
m_filter = resources->filter();
if (m_filter) {
m_savedContext = m_paintInfo->context;
+ m_savedPaintRect = m_paintInfo->rect;
// Return with false here may mean that we don't need to draw the content
// (because it was either drawn before or empty) but we still need to apply the filter.
m_renderingFlags |= EndFilterLayer;
if (!m_filter->applyResource(m_object, style, m_paintInfo->context, ApplyToDefaultMode))
return;
+
+ // Since we're caching the resulting bitmap and do not invalidate it on repaint rect
+ // changes, we need to paint the whole filter region. Otherwise, elements not visible
+ // at the time of the initial paint (due to scrolling, window size, etc.) will never
+ // be drawn.
+ m_paintInfo->rect = IntRect(m_filter->drawingRegion(m_object));
}
}
#endif
m_renderingFlags |= RenderingPrepared;
}
+static AffineTransform& currentContentTransformation()
+{
+ DEFINE_STATIC_LOCAL(AffineTransform, s_currentContentTransformation, ());
+ return s_currentContentTransformation;
+}
+
+float SVGRenderingContext::calculateScreenFontSizeScalingFactor(const RenderObject* renderer)
+{
+ ASSERT(renderer);
+
+ AffineTransform ctm;
+ calculateTransformationToOutermostSVGCoordinateSystem(renderer, ctm);
+ return narrowPrecisionToFloat(sqrt((pow(ctm.xScale(), 2) + pow(ctm.yScale(), 2)) / 2));
+}
+
+void SVGRenderingContext::calculateTransformationToOutermostSVGCoordinateSystem(const RenderObject* renderer, AffineTransform& absoluteTransform)
+{
+ const RenderObject* current = renderer;
+ ASSERT(current);
+
+ absoluteTransform = currentContentTransformation();
+ while (current) {
+ absoluteTransform = current->localToParentTransform() * absoluteTransform;
+ if (current->isSVGRoot())
+ break;
+ current = current->parent();
+ }
+}
+
+bool SVGRenderingContext::createImageBuffer(const FloatRect& targetRect, const AffineTransform& absoluteTransform, OwnPtr<ImageBuffer>& imageBuffer, ColorSpace colorSpace, RenderingMode renderingMode)
+{
+ IntRect paintRect = calculateImageBufferRect(targetRect, absoluteTransform);
+ // Don't create empty ImageBuffers.
+ if (paintRect.isEmpty())
+ return false;
+
+ IntSize clampedSize = clampedAbsoluteSize(paintRect.size());
+ OwnPtr<ImageBuffer> image = ImageBuffer::create(clampedSize, 1, colorSpace, renderingMode);
+ if (!image)
+ return false;
+
+ GraphicsContext* imageContext = image->context();
+ ASSERT(imageContext);
+
+ imageContext->scale(FloatSize(static_cast<float>(clampedSize.width()) / paintRect.width(),
+ static_cast<float>(clampedSize.height()) / paintRect.height()));
+ imageContext->translate(-paintRect.x(), -paintRect.y());
+ imageContext->concatCTM(absoluteTransform);
+
+ imageBuffer = image.release();
+ return true;
+}
+
+bool SVGRenderingContext::createImageBufferForPattern(const FloatRect& absoluteTargetRect, const FloatRect& clampedAbsoluteTargetRect, OwnPtr<ImageBuffer>& imageBuffer, ColorSpace colorSpace, RenderingMode renderingMode)
+{
+ IntSize imageSize(roundedIntSize(clampedAbsoluteTargetRect.size()));
+ IntSize unclampedImageSize(roundedIntSize(absoluteTargetRect.size()));
+
+ // Don't create empty ImageBuffers.
+ if (imageSize.isEmpty())
+ return false;
+
+ OwnPtr<ImageBuffer> image = ImageBuffer::create(imageSize, 1, colorSpace, renderingMode);
+ if (!image)
+ return false;
+
+ GraphicsContext* imageContext = image->context();
+ ASSERT(imageContext);
+
+ // Compensate rounding effects, as the absolute target rect is using floating-point numbers and the image buffer size is integer.
+ imageContext->scale(FloatSize(unclampedImageSize.width() / absoluteTargetRect.width(), unclampedImageSize.height() / absoluteTargetRect.height()));
+
+ imageBuffer = image.release();
+ return true;
+}
+
+void SVGRenderingContext::renderSubtreeToImageBuffer(ImageBuffer* image, RenderObject* item, const AffineTransform& subtreeContentTransformation)
+{
+ ASSERT(item);
+ ASSERT(image);
+ ASSERT(image->context());
+
+ PaintInfo info(image->context(), PaintInfo::infiniteRect(), PaintPhaseForeground, PaintBehaviorNormal);
+
+ AffineTransform& contentTransformation = currentContentTransformation();
+ AffineTransform savedContentTransformation = contentTransformation;
+ contentTransformation = subtreeContentTransformation * contentTransformation;
+
+ ASSERT(!item->needsLayout());
+ item->paint(info, IntPoint());
+
+ contentTransformation = savedContentTransformation;
+}
+
+void SVGRenderingContext::clipToImageBuffer(GraphicsContext* context, const AffineTransform& absoluteTransform, const FloatRect& targetRect, OwnPtr<ImageBuffer>& imageBuffer, bool safeToClear)
+{
+ ASSERT(context);
+ ASSERT(imageBuffer);
+
+ FloatRect absoluteTargetRect = calculateImageBufferRect(targetRect, absoluteTransform);
+
+ // The mask image has been created in the absolute coordinate space, as the image should not be scaled.
+ // So the actual masking process has to be done in the absolute coordinate space as well.
+ context->concatCTM(absoluteTransform.inverse());
+ context->clipToImageBuffer(imageBuffer.get(), absoluteTargetRect);
+ context->concatCTM(absoluteTransform);
+
+ // When nesting resources, with objectBoundingBox as content unit types, there's no use in caching the
+ // resulting image buffer as the parent resource already caches the result.
+ if (safeToClear && !currentContentTransformation().isIdentity())
+ imageBuffer.clear();
+}
+
+FloatRect SVGRenderingContext::clampedAbsoluteTargetRect(const FloatRect& absoluteTargetRect)
+{
+ const FloatSize maxImageBufferSize(kMaxImageBufferSize, kMaxImageBufferSize);
+ return FloatRect(absoluteTargetRect.location(), absoluteTargetRect.size().shrunkTo(maxImageBufferSize));
+}
+
+IntSize SVGRenderingContext::clampedAbsoluteSize(const IntSize& absoluteSize)
+{
+ const IntSize maxImageBufferSize(kMaxImageBufferSize, kMaxImageBufferSize);
+ return absoluteSize.shrunkTo(maxImageBufferSize);
+}
+
+void SVGRenderingContext::clear2DRotation(AffineTransform& transform)
+{
+ AffineTransform::DecomposedType decomposition;
+ transform.decompose(decomposition);
+ decomposition.angle = 0;
+ transform.recompose(decomposition);
+}
+
}
#endif
git://git.webkit.org / WebKit-https.git / blobdiff