void SVGImage::drawSVGToImageBuffer(ImageBuffer* buffer, const IntSize& size, float zoom, ShouldClearBuffer shouldClear)
{
// FIXME: This doesn't work correctly with animations. If an image contains animations, that say run for 2 seconds,
// and we currently have one <img> that displays us. If we open another document referencing the same SVGImage it
// will display the document at a time where animations already ran - even though it has its own ImageBuffer.
// We currently don't implement SVGSVGElement::setCurrentTime, and can NOT go back in time, once animations started.
// There's no way to fix this besides avoiding style/attribute mutations from SVGAnimationElement.
ASSERT(buffer);
ASSERT(!size.isEmpty());
if (!m_page)
return;
Frame* frame = m_page->mainFrame();
SVGSVGElement* rootElement = static_cast<SVGDocument*>(frame->document())->rootElement();
if (!rootElement)
return;
RenderSVGRoot* renderer = toRenderSVGRoot(rootElement->renderer());
if (!renderer)
return;
// Draw image at requested size.
ImageObserver* observer = imageObserver();
ASSERT(observer);
// Temporarily reset image observer, we don't want to receive any changeInRect() calls due this relayout.
setImageObserver(0);
renderer->setContainerSize(size);
frame->view()->resize(this->size());
if (zoom != 1)
frame->setPageZoomFactor(zoom);
// Eventually clear image buffer.
IntRect rect(IntPoint(), size);
if (shouldClear == ClearImageBuffer)
buffer->context()->clearRect(rect);
// Draw SVG on top of ImageBuffer.
draw(buffer->context(), rect, rect, ColorSpaceDeviceRGB, CompositeSourceOver);
// Reset container size & zoom to initial state. Otherwhise the size() of this
// image would return whatever last size was set by drawSVGToImageBuffer().
if (zoom != 1)
frame->setPageZoomFactor(1);
renderer->setContainerSize(IntSize());
frame->view()->resize(this->size());
if (frame->view()->needsLayout())
frame->view()->layout();
setImageObserver(observer);
}
void SVGImage::setContainerSize(const FloatSize& size)
{
if (!m_page || !usesContainerSize())
return;
SVGSVGElement* rootElement = toSVGDocument(m_page->mainFrame().document())->rootElement();
if (!rootElement)
return;
RenderSVGRoot* renderer = toRenderSVGRoot(rootElement->renderer());
if (!renderer)
return;
FrameView* view = frameView();
view->resize(this->containerSize());
renderer->setContainerSize(IntSize(size));
}