https://bugs.webkit.org/show_bug.cgi?id=65769

Source/WebCore: 

Reviewed by Nikolas Zimmermann.

This patch introduces a new common base class called RenderSVGShape which
replaces the RenderSVGPath. This new base class has the same purpose
as the replaced class and has specialized descendants for common
shapes (like Rectangles and Circles), which allows faster painting
of these shapes when certain conditions are fulfilled. On some
benchmark programs we have seen 5% speedup.

The biggest motivation of this refactor is taking advantage
of faster primitive drawing in the most common and frequent
cases. However in some rare cases, like painting rounded
rects, we need to fallback to the original code path, which
is fully kept in the RenderSVGShape base class. Some other
cases, like dashed strokes, can be painted but mouse pointer
events cannot be handled by the descendant classes. A different
fallback mechanism is used in such cases which redirects
only the pointer event handling to the base class.

Tests: svg/custom/pointer-events-on-rounded-rect.xhtml
       svg/custom/pointer-events-with-linecaps-and-miterlimits.xhtml

* CMakeLists.txt:
* GNUmakefile.list.am:
* WebCore.gypi:
* WebCore.pro:
* WebCore.vcproj/WebCore.vcproj:
* platform/graphics/FloatRect.cpp:
(WebCore::FloatRect::contains):
* platform/graphics/FloatRect.h:
(WebCore::FloatRect::contains):
* rendering/RenderObject.h:
(WebCore::RenderObject::isSVGRect):
(WebCore::RenderObject::isSVGShape):
* rendering/RenderTreeAsText.cpp:
(WebCore::write):
* rendering/svg/RenderSVGAllInOne.cpp:
* rendering/svg/RenderSVGModelObject.cpp:
(WebCore::isGraphicsElement):
* rendering/svg/RenderSVGPath.cpp:
(WebCore::RenderSVGPath::RenderSVGPath):
(WebCore::RenderSVGPath::inflateWithStrokeAndMarkerBounds): Unite the markerBounds with strokeBoundingBox.
* rendering/svg/RenderSVGPath.h:
* rendering/svg/RenderSVGRect.cpp: Added.
(WebCore::RenderSVGRect::RenderSVGRect):
(WebCore::RenderSVGRect::~RenderSVGRect):
(WebCore::RenderSVGRect::createShape):
(WebCore::RenderSVGRect::objectBoundingBox):
(WebCore::RenderSVGRect::strokeBoundingBox):
(WebCore::RenderSVGRect::fillShape):
(WebCore::RenderSVGRect::strokeShape):
(WebCore::RenderSVGRect::shapeDependentStrokeContains):
(WebCore::RenderSVGRect::shapeDependentFillContains):
* rendering/svg/RenderSVGRect.h: Added.
(WebCore::RenderSVGRect::isSVGRect):
(WebCore::RenderSVGRect::renderName):
(WebCore::RenderSVGRect::isEmpty):
* rendering/svg/RenderSVGResource.h:
(WebCore::RenderSVGResource::postApplyResource): A new shape argument was added to allow shape specific faster painting.
* rendering/svg/RenderSVGResourceClipper.cpp:
(WebCore::RenderSVGResourceClipper::drawContentIntoMaskImage):
(WebCore::RenderSVGResourceClipper::calculateClipContentRepaintRect):
(WebCore::RenderSVGResourceClipper::hitTestClipContent):
* rendering/svg/RenderSVGResourceContainer.cpp:
(WebCore::RenderSVGResourceContainer::transformOnNonScalingStroke):
* rendering/svg/RenderSVGResourceFilter.cpp:
(WebCore::RenderSVGResourceFilter::postApplyResource):
* rendering/svg/RenderSVGResourceFilter.h:
* rendering/svg/RenderSVGResourceGradient.cpp:
(WebCore::RenderSVGResourceGradient::applyResource):
* rendering/svg/RenderSVGResourceGradient.h:
* rendering/svg/RenderSVGResourcePattern.cpp:
(WebCore::RenderSVGResourcePattern::postApplyResource):
* rendering/svg/RenderSVGResourcePattern.h:
* rendering/svg/RenderSVGResourceSolidColor.cpp:
(WebCore::RenderSVGResourceSolidColor::postApplyResource):
* rendering/svg/RenderSVGResourceSolidColor.h:
* rendering/svg/RenderSVGShape.cpp: Copied from Source/WebCore/rendering/svg/RenderSVGPath.cpp.
(WebCore::RenderSVGShape::RenderSVGShape):
(WebCore::RenderSVGShape::~RenderSVGShape):
(WebCore::RenderSVGShape::createShape):
(WebCore::RenderSVGShape::isEmpty):
(WebCore::RenderSVGShape::fillShape):
(WebCore::RenderSVGShape::objectBoundingBox):
(WebCore::RenderSVGShape::strokeBoundingBox):
(WebCore::RenderSVGShape::strokeShape):
(WebCore::RenderSVGShape::shapeDependentStrokeContains):
The purpose of this virtual function allows decendants to use their own fast checks.
(WebCore::RenderSVGShape::shapeDependentFillContains):
The purpose of this virtual function allows decendants to use their own fast checks.
(WebCore::RenderSVGShape::fillContains):
(WebCore::RenderSVGShape::strokeContains):
(WebCore::RenderSVGShape::layout):
(WebCore::RenderSVGShape::shouldStrokeZeroLengthSubpath):
(WebCore::RenderSVGShape::zeroLengthSubpathRect):
(WebCore::RenderSVGShape::setupSquareCapPath):
(WebCore::RenderSVGShape::setupNonScalingStrokePath):
(WebCore::RenderSVGShape::fillAndStrokePath):
(WebCore::RenderSVGShape::paint):
(WebCore::RenderSVGShape::addFocusRingRects):
(WebCore::RenderSVGShape::nodeAtFloatPoint):
(WebCore::RenderSVGShape::calculateMarkerBoundsIfNeeded):
(WebCore::RenderSVGShape::updateCachedBoundaries):
(WebCore::RenderSVGShape::strokeWidth):
* rendering/svg/RenderSVGShape.h: Copied from Source/WebCore/rendering/svg/RenderSVGPath.h.
(WebCore::BoundingRectStrokeStyleApplier::BoundingRectStrokeStyleApplier):
(WebCore::BoundingRectStrokeStyleApplier::strokeStyle):
(WebCore::RenderSVGShape::setNeedsShapeUpdate):
(WebCore::RenderSVGShape::setNeedsBoundariesUpdate):
(WebCore::RenderSVGShape::setNeedsTransformUpdate):
(WebCore::RenderSVGShape::isPaintingFallback):
(WebCore::RenderSVGShape::path):
(WebCore::RenderSVGShape::setIsPaintingFallback):
(WebCore::RenderSVGShape::setStrokeAndMarkerBoundingBox):
(WebCore::RenderSVGShape::hasPath):
(WebCore::RenderSVGShape::repaintRectInLocalCoordinates):
(WebCore::RenderSVGShape::localToParentTransform):
(WebCore::RenderSVGShape::localTransform):
(WebCore::RenderSVGShape::isSVGShape):
(WebCore::RenderSVGShape::renderName):
(WebCore::RenderSVGShape::isRoundedRect):
(WebCore::RenderSVGShape::inflateWithMarkerBounds):
(WebCore::toRenderSVGShape):
* rendering/svg/SVGInlineTextBox.cpp:
(WebCore::SVGInlineTextBox::releasePaintingResource):
* rendering/svg/SVGRenderSupport.cpp:
(WebCore::SVGRenderSupport::finishRenderSVGContent):
(WebCore::SVGRenderSupport::layoutChildren):
* rendering/svg/SVGRenderTreeAsText.cpp:
(WebCore::writeStyle):
(WebCore::operator<<):
(WebCore::write):
* rendering/svg/SVGRenderTreeAsText.h:
* rendering/svg/SVGTextRunRenderingContext.cpp:
(WebCore::SVGTextRunRenderingContext::drawSVGGlyphs):
* svg/SVGCircleElement.cpp:
(WebCore::SVGCircleElement::svgAttributeChanged):
* svg/SVGEllipseElement.cpp:
(WebCore::SVGEllipseElement::svgAttributeChanged):
* svg/SVGLineElement.cpp:
(WebCore::SVGLineElement::svgAttributeChanged):
* svg/SVGPathElement.cpp:
(WebCore::SVGPathElement::svgAttributeChanged):
(WebCore::SVGPathElement::pathSegListChanged):
(WebCore::SVGPathElement::createRenderer):
* svg/SVGPathElement.h:
* svg/SVGPolyElement.cpp:
(WebCore::SVGPolyElement::svgAttributeChanged):
* svg/SVGRectElement.cpp:
(WebCore::SVGRectElement::svgAttributeChanged):
(WebCore::SVGRectElement::createRenderer):
* svg/SVGRectElement.h:

LayoutTests: 

Add new tests to check the new shape based rendering mechanism of SVGRectElement.

Reviewed by Nikolas Zimmermann.

* svg/custom/pointer-events-on-rounded-rect-expected.txt: Added.
* svg/custom/pointer-events-on-rounded-rect.xhtml: Added.
* svg/custom/pointer-events-with-linecaps-and-miterlimits-expected.txt: Added.
* svg/custom/pointer-events-with-linecaps-and-miterlimits.xhtml: Added.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@101517 268f45cc-cd09-0410-ab3c-d52691b4dbfc