2011-07-05 Igor Oliveira <igor.oliveira@openbossa.org>
[Qt] Add ShadowBlur support
https://bugs.webkit.org/show_bug.cgi?id=62997
Use ShadowBlur instead of ContextShadow to handle canvas and css shadows. ShadowBlur is
a newer and platform independent shadow implementation.
Qt QPainter does not have support for shadows so is necessary to create a layer support
to draw complex shapes and fonts. The beginShadowLayer creates a temporary shadow buffer
where the canvas can draw onto and endShadowLayer applies the blur filter, colors the
shadow buffer and draw the final shadow to the graphics context.
Reviewed by Andreas Kling.
* WebCore.pro:
* platform/graphics/GraphicsContext.cpp:
* platform/graphics/GraphicsContext.h:
* platform/graphics/ShadowBlur.cpp:
(WebCore::ShadowBlur::ShadowBlur):
(WebCore::ShadowBlur::setShadowValues):
(WebCore::ShadowBlur::updateShadowBlurValues):
(WebCore::ShadowBlur::clear):
(WebCore::ShadowBlur::blurAndColorShadowBuffer):
(WebCore::ShadowBlur::beginShadowLayer):
(WebCore::ShadowBlur::endShadowLayer):
* platform/graphics/ShadowBlur.h:
(WebCore::ShadowBlur::type):
* platform/graphics/qt/ContextShadowQt.cpp: Removed.
* platform/graphics/qt/FontQt.cpp:
(WebCore::drawTextCommon):
(WebCore::Font::drawGlyphs):
* platform/graphics/qt/GraphicsContextQt.cpp:
(WebCore::GraphicsContextPlatformPrivate::mustUseShadowBlur):
(WebCore::GraphicsContextPlatformPrivate::GraphicsContextPlatformPrivate):
(WebCore::GraphicsContextPlatformPrivate::~GraphicsContextPlatformPrivate):
(WebCore::GraphicsContext::savePlatformState):
(WebCore::GraphicsContext::restorePlatformState):
(WebCore::GraphicsContext::fillPath):
(WebCore::GraphicsContext::strokePath):
(WebCore::GraphicsContext::fillRect):
(WebCore::GraphicsContext::fillRoundedRect):
(WebCore::GraphicsContext::shadowBlur):
(WebCore::GraphicsContext::clipBounds):
(WebCore::GraphicsContext::setPlatformShadow):
(WebCore::GraphicsContext::clearPlatformShadow):
* platform/graphics/qt/ImageQt.cpp:
(WebCore::BitmapImage::draw):
* platform/graphics/qt/StillImageQt.cpp:
(WebCore::StillImage::draw):
git-svn-id: http://svn.webkit.org/repository/webkit/trunk@90406 268f45cc-cd09-0410-ab3c-d52691b4dbfc
11 files changed
