bool SVGRenderSupport::parentTransformDidChange(RenderObject* object)
{
// When a parent container is transformed in SVG, all children will be painted automatically
// so we are able to skip redundant repaint checks.
RenderObject* parent = object->parent();
return !(parent && parent->isSVGContainer() && toRenderSVGContainer(parent)->didTransformToRootUpdate());
}
void renderSubtreeToImage(ImageBuffer* image, RenderObject* item)
{
ASSERT(item);
ASSERT(image);
ASSERT(image->context());
// FIXME: This sets the rect to the viewable area of the current frame. This
// is used to support text drawings to the ImageBuffer. See bug 30399.
IntRect rect;
FrameView* frameView = item->document()->view();
if (frameView)
rect = IntRect(0, 0, frameView->visibleWidth(), frameView->visibleHeight());
RenderObject::PaintInfo info(image->context(), rect, PaintPhaseForeground, 0, 0, 0);
// FIXME: isSVGContainer returns true for RenderSVGViewportContainer, so if this is ever
// called with one of those, we will read from the wrong offset in an object due to a bad cast.
RenderSVGContainer* svgContainer = 0;
if (item && item->isSVGContainer())
svgContainer = toRenderSVGContainer(item);
bool drawsContents = svgContainer ? svgContainer->drawsContents() : false;
if (svgContainer && !drawsContents)
svgContainer->setDrawsContents(true);
item->layoutIfNeeded();
item->paint(info, 0, 0);
if (svgContainer && !drawsContents)
svgContainer->setDrawsContents(false);
}
void SVGImageBufferTools::renderSubtreeToImageBuffer(ImageBuffer* image, RenderObject* item, const AffineTransform& subtreeContentTransformation)
{
ASSERT(item);
ASSERT(image);
ASSERT(image->context());
PaintInfo info(image->context(), PaintInfo::infiniteRect(), PaintPhaseForeground, 0, 0, 0);
RenderSVGContainer* svgContainer = 0;
if (item && item->isSVGContainer() && !item->isSVGViewportContainer())
svgContainer = toRenderSVGContainer(item);
bool drawsContents = svgContainer ? svgContainer->drawsContents() : false;
if (svgContainer && !drawsContents)
svgContainer->setDrawsContents(true);
AffineTransform& contentTransformation = currentContentTransformation();
AffineTransform savedContentTransformation = contentTransformation;
contentTransformation.multiply(subtreeContentTransformation);
item->layoutIfNeeded();
item->paint(info, 0, 0);
contentTransformation = savedContentTransformation;
if (svgContainer && !drawsContents)
svgContainer->setDrawsContents(false);
}
bool SVGRenderSupport::checkForSVGRepaintDuringLayout(RenderObject* object)
{
if (!object->checkForRepaintDuringLayout())
return false;
// When a parent container is transformed in SVG, all children will be painted automatically
// so we are able to skip redundant repaint checks.
RenderObject* parent = object->parent();
return !(parent && parent->isSVGContainer() && toRenderSVGContainer(parent)->didTransformToRootUpdate());
}
bool SVGRenderSupport::checkForSVGRepaintDuringLayout(const RenderElement& renderer)
{
if (!renderer.checkForRepaintDuringLayout())
return false;
// When a parent container is transformed in SVG, all children will be painted automatically
// so we are able to skip redundant repaint checks.
auto parent = renderer.parent();
return !(parent && parent->isSVGContainer() && toRenderSVGContainer(parent)->didTransformToRootUpdate());
}
bool SVGRenderSupport::transformToRootChanged(RenderObject* ancestor)
{
while (ancestor && !ancestor->isSVGRoot()) {
if (ancestor->isSVGTransformableContainer())
return toRenderSVGContainer(ancestor)->didTransformToRootUpdate();
if (ancestor->isSVGViewportContainer())
return toRenderSVGViewportContainer(ancestor)->didTransformToRootUpdate();
ancestor = ancestor->parent();
}
return false;
}
// Update a bounding box taking into account the validity of the other bounding box.
inline void SVGRenderSupport::updateObjectBoundingBox(FloatRect& objectBoundingBox, bool& objectBoundingBoxValid, RenderObject* other, FloatRect otherBoundingBox)
{
bool otherValid = other->isSVGContainer() ? toRenderSVGContainer(other)->isObjectBoundingBoxValid() : true;
if (!otherValid)
return;
if (!objectBoundingBoxValid) {
objectBoundingBox = otherBoundingBox;
objectBoundingBoxValid = true;
return;
}
objectBoundingBox.uniteEvenIfEmpty(otherBoundingBox);
}
void renderSubtreeToImage(ImageBuffer* image, RenderObject* item)
{
ASSERT(item);
ASSERT(image);
ASSERT(image->context());
RenderObject::PaintInfo info(image->context(), IntRect(), PaintPhaseForeground, 0, 0, 0);
// FIXME: isSVGContainer returns true for RenderSVGViewportContainer, so if this is ever
// called with one of those, we will read from the wrong offset in an object due to a bad cast.
RenderSVGContainer* svgContainer = 0;
if (item && item->isSVGContainer())
svgContainer = toRenderSVGContainer(item);
bool drawsContents = svgContainer ? svgContainer->drawsContents() : false;
if (svgContainer && !drawsContents)
svgContainer->setDrawsContents(true);
item->layoutIfNeeded();
item->paint(info, 0, 0);
if (svgContainer && !drawsContents)
svgContainer->setDrawsContents(false);
}