https://bugs.webkit.org/show_bug.cgi?id=52200

Reviewed by Dirk Schulze.

This patch allows repainting of filters, when their
attribute changes does not require relayout.

Existing dynamic-update tests cover this feature.

* platform/graphics/filters/FilterEffect.cpp:
(WebCore::FilterEffect::clearResult): Clearing the currently stored image
before repainting.
* platform/graphics/filters/FilterEffect.h:
* rendering/RenderObject.h:
(WebCore::RenderObject::isSVGResourceFilter): Not only the filter primitives,
but filters should also be detected to allow safe testing and casting.
* rendering/svg/RenderSVGResourceFilter.cpp:
(WebCore::RenderSVGResourceFilter::buildPrimitives): Passing the renderer.
(WebCore::RenderSVGResourceFilter::applyResource):
determineFilterPrimitiveSubregion does not require the filter anymore.
(WebCore::RenderSVGResourceFilter::postApplyResource): Repaint
if lastEffect->hasResult() is false.
(WebCore::RenderSVGResourceFilter::primitiveAttributeChanged):
Searching for all FilterEffects, whose created by the current FilterElement,
and clearing all resulting images depending on those FilterEffects.
* rendering/svg/RenderSVGResourceFilter.h:
(WebCore::RenderSVGResourceFilter::isSVGResourceFilter):
* rendering/svg/RenderSVGResourceFilterPrimitive.cpp:
(WebCore::RenderSVGResourceFilterPrimitive::determineFilterPrimitiveSubregion):
The filter argument is unnecessary anymore. But is is still kept as a static
member, since the primitive renderer still does not know about the
FilterEffect objects.
* rendering/svg/RenderSVGResourceFilterPrimitive.h:
(WebCore::RenderSVGResourceFilterPrimitive::RenderSVGResourceFilterPrimitive):
(WebCore::RenderSVGResourceFilterPrimitive::primitiveAttributeChanged):
Calls RenderSVGResourceFilter::primitiveAttributeChanged.
* svg/SVGFEDiffuseLightingElement.cpp:
(WebCore::SVGFEDiffuseLightingElement::setFilterEffectAttribute):
Setting the new attribute value for each FilterEffect.
(WebCore::SVGFEDiffuseLightingElement::svgAttributeChanged):
* svg/SVGFEDiffuseLightingElement.h:
Calling primitiveAttributeChanged.
* svg/SVGFilterPrimitiveStandardAttributes.cpp:
(WebCore::SVGFilterPrimitiveStandardAttributes::setFilterEffectAttribute):
This function will be removed when all FilterElement implements
their setFilterEffectAttribute
* svg/SVGFilterPrimitiveStandardAttributes.h:
(WebCore::SVGFilterPrimitiveStandardAttributes::primitiveAttributeChanged):
* svg/graphics/filters/SVGFilterBuilder.cpp:
(WebCore::SVGFilterBuilder::appendEffectToEffectReferences): The
renderers are assigned to the filter effects.
(WebCore::SVGFilterBuilder::clearEffects):
(WebCore::SVGFilterBuilder::clearResultsRecursive): Recursively
clearing the result images for those filters, whose depend on
the starting filter.
* svg/graphics/filters/SVGFilterBuilder.h:
(WebCore::SVGFilterBuilder::effectReferences): 'get' is unnecessary
(WebCore::SVGFilterBuilder::effectByRenderer): returns the
FilterEffect belongs to this RenderObject.



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@76590 268f45cc-cd09-0410-ab3c-d52691b4dbfc