void RenderSVGBlock::setStyle(RenderStyle* style)
{
RenderBlock::setStyle(style);
//FIXME: Once overflow rules are supported by SVG we should
//probably map the CSS overflow rules rather than just ignoring
//them
setHasOverflowClip(false);
}
void RenderScrollbarPart::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
{
RenderBlock::styleDidChange(diff, oldStyle);
setInline(false);
clearPositionedState();
setFloating(false);
setHasOverflowClip(false);
if (oldStyle && m_scrollbar && m_part != NoPart && diff >= StyleDifferenceRepaint)
m_scrollbar->theme()->invalidatePart(*m_scrollbar, m_part);
}
void LayoutScrollbarPart::styleDidChange(StyleDifference diff, const ComputedStyle* oldStyle)
{
LayoutBlock::styleDidChange(diff, oldStyle);
setInline(false);
clearPositionedState();
setFloating(false);
setHasOverflowClip(false);
if (oldStyle && m_scrollbar && m_part != NoPart && (diff.needsPaintInvalidation() || diff.needsLayout()))
m_scrollbar->theme()->invalidatePart(m_scrollbar, m_part);
}
void LayoutSVGBlock::updateFromStyle()
{
LayoutBlock::updateFromStyle();
// LayoutSVGlock, used by Layout(SVGText|ForeignObject), is not allowed to call setHasOverflowClip(true).
// LayoutBlock assumes a layer to be present when the overflow clip functionality is requested. Both
// Layout(SVGText|ForeignObject) return 'NoPaintLayer' on 'layerTypeRequired'. Fine for LayoutSVGText.
//
// If we want to support overflow rules for <foreignObject> we can choose between two solutions:
// a) make LayoutSVGForeignObject require layers and SVG layer aware
// b) reactor overflow logic out of Layer (as suggested by dhyatt), which is a large task
//
// Until this is resolved, disable overflow support. Opera/FF don't support it as well at the moment (Feb 2010).
//
// Note: This does NOT affect overflow handling on outer/inner <svg> elements - this is handled
// manually by LayoutSVGRoot - which owns the documents enclosing root layer and thus works fine.
setHasOverflowClip(false);
}