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oliver@apple.com authored
Reviewed by Simon Fraser. Animated scaling of background-image is too slow https://bugs.webkit.org/show_bug.cgi?id=33808 Implement a version of the RenderImage animated scaling optimisation for background images. Due to the possibility of arbitrary transforms being applied to containing elements we explicitly check the current CTM of the context for scaling or rotation. * platform/graphics/GraphicsContext.cpp: (WebCore::GraphicsContext::drawTiledImage): * platform/graphics/GraphicsContext.h: * platform/graphics/transforms/TransformationMatrix.h: (WebCore::TransformationMatrix::isIdentityOrTranslation): * rendering/RenderBoxModelObject.cpp: (WebCore::RenderBoxModelScaleData::RenderBoxModelScaleData): (WebCore::RenderBoxModelScaleData::~RenderBoxModelScaleData): (WebCore::RenderBoxModelScaleData::size): (WebCore::RenderBoxModelScaleData::time): (WebCore::RenderBoxModelScaleData::useLowQualityScale): (WebCore::RenderBoxModelScaleData::hiqhQualityRepaintTimer): (WebCore::RenderBoxModelScaleData::setSize): (WebCore::RenderBoxModelScaleData::setTime): (WebCore::RenderBoxModelScaleData::setUseLowQualityScale): (WebCore::RenderBoxModelScaleObserver::boxModelObjectDestroyed): (WebCore::RenderBoxModelScaleObserver::highQualityRepaintTimerFired): (WebCore::RenderBoxModelScaleObserver::shouldPaintBackgroundAtLowQuality): (WebCore::RenderBoxModelObject::highQualityRepaintTimerFired): (WebCore::RenderBoxModelObject::~RenderBoxModelObject): (WebCore::RenderBoxModelObject::paintFillLayerExtended): * rendering/RenderBoxModelObject.h: git-svn-id: http://svn.webkit.org/repository/webkit/trunk@53949 268f45cc-cd09-0410-ab3c-d52691b4dbfc
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