StyleDifference RenderStyle::visualInvalidationDiff(const RenderStyle& other) const
{
// Note, we use .get() on each DataRef below because DataRef::operator== will do a deep
// compare, which is duplicate work when we're going to compare each property inside
// this function anyway.
StyleDifference diff;
if (diffNeedsFullLayout(other)) {
diff.setNeedsFullLayout();
} else if (position() != StaticPosition && surround->offset != other.surround->offset) {
// Optimize for the case where a positioned layer is moving but not changing size.
if (positionedObjectMovedOnly(surround->offset, other.surround->offset, m_box->width()))
diff.setNeedsPositionedMovementLayout();
else
diff.setNeedsFullLayout();
}
updatePropertySpecificDifferences(other, diff);
// Cursors are not checked, since they will be set appropriately in response to mouse events,
// so they don't need to cause any paint invalidation or layout.
return diff;
}
void RenderSVGResourceContainer::registerResource()
{
SVGDocumentExtensions& extensions = svgExtensionsFromElement(element());
if (!extensions.hasPendingResource(m_id)) {
extensions.addResource(m_id, this);
return;
}
OwnPtr<SVGDocumentExtensions::SVGPendingElements> clients(extensions.removePendingResource(m_id));
// Cache us with the new id.
extensions.addResource(m_id, this);
// Update cached resources of pending clients.
const SVGDocumentExtensions::SVGPendingElements::const_iterator end = clients->end();
for (SVGDocumentExtensions::SVGPendingElements::const_iterator it = clients->begin(); it != end; ++it) {
ASSERT((*it)->hasPendingResources());
extensions.clearHasPendingResourcesIfPossible(*it);
RenderObject* renderer = (*it)->renderer();
if (!renderer)
continue;
StyleDifference diff;
diff.setNeedsFullLayout();
SVGResourcesCache::clientStyleChanged(renderer, diff, renderer->style());
renderer->setNeedsLayoutAndFullPaintInvalidation();
}
}
StyleDifference SVGRenderStyle::diff(const SVGRenderStyle* other) const
{
StyleDifference styleDifference;
if (diffNeedsLayoutAndPaintInvalidation(other)) {
styleDifference.setNeedsFullLayout();
styleDifference.setNeedsPaintInvalidationObject();
} else if (diffNeedsPaintInvalidation(other)) {
styleDifference.setNeedsPaintInvalidationObject();
}
return styleDifference;
}
StyleDifference SVGRenderStyle::diff(const SVGRenderStyle* other) const
{
StyleDifference styleDifference;
if (diffNeedsLayoutAndRepaint(other)) {
styleDifference.setNeedsFullLayout();
styleDifference.setNeedsRepaintObject();
} else if (diffNeedsRepaint(other)) {
styleDifference.setNeedsRepaintObject();
}
return styleDifference;
}
void LayoutSVGResourceContainer::registerResource()
{
SVGDocumentExtensions& extensions = svgExtensionsFromElement(element());
if (!extensions.hasPendingResource(m_id)) {
extensions.addResource(m_id, this);
return;
}
SVGDocumentExtensions::SVGPendingElements* clients(extensions.removePendingResource(m_id));
// Cache us with the new id.
extensions.addResource(m_id, this);
// Update cached resources of pending clients.
for (const auto& pendingClient : *clients) {
ASSERT(pendingClient->hasPendingResources());
extensions.clearHasPendingResourcesIfPossible(pendingClient);
LayoutObject* layoutObject = pendingClient->layoutObject();
if (!layoutObject)
continue;
const ComputedStyle& style = layoutObject->styleRef();
// If the client has a layer (is a non-SVGElement) we need to signal
// invalidation in the same way as is done in markAllResourceClientsForInvalidation above.
if (layoutObject->hasLayer() && resourceType() == FilterResourceType) {
if (style.hasFilter())
toLayoutBoxModelObject(layoutObject)->layer()->filterNeedsPaintInvalidation();
// If this is the SVG root, we could have both 'filter' and
// '-webkit-filter' applied, so we need to do the invalidation
// below as well, unless we can optimistically determine that
// 'filter' does not apply to the element in question.
if (!layoutObject->isSVGRoot() || !style.svgStyle().hasFilter())
continue;
}
StyleDifference diff;
diff.setNeedsFullLayout();
SVGResourcesCache::clientStyleChanged(layoutObject, diff, style);
layoutObject->setNeedsLayoutAndFullPaintInvalidation(LayoutInvalidationReason::SvgResourceInvalidated);
}
}
