static inline bool rendererObscuresBackground(RenderObject* object)
{
return object && object->style()->visibility() == VISIBLE
&& object->style()->opacity() == 1
&& !object->style()->hasTransform()
&& !isComposited(object);
}
bool RenderWidget::setWidgetGeometry(const LayoutRect& frame)
{
IntRect clipRect = roundedIntRect(enclosingLayer()->childrenClipRect());
IntRect newFrameRect = roundedIntRect(frame);
IntRect oldFrameRect = m_widget->frameRect();
bool clipChanged = m_clipRect != clipRect;
bool boundsChanged = oldFrameRect != newFrameRect;
if (!boundsChanged && !clipChanged)
return false;
m_clipRect = clipRect;
WeakPtr<RenderWidget> weakThis = createWeakPtr();
// These calls *may* cause this renderer to disappear from underneath...
if (boundsChanged)
m_widget->setFrameRect(newFrameRect);
else if (clipChanged)
m_widget->clipRectChanged();
// ...so we follow up with a sanity check.
if (!weakThis)
return true;
if (boundsChanged && isComposited())
layer()->backing()->updateAfterWidgetResize();
return oldFrameRect.size() != newFrameRect.size();
}
static inline bool rendererObscuresBackground(RenderObject* rootObject)
{
if (!rootObject)
return false;
RenderStyle* style = rootObject->style();
if (style->visibility() != VISIBLE
|| style->opacity() != 1
|| style->hasTransform())
return false;
if (isComposited(rootObject))
return false;
const RenderObject* rootRenderer = rootObject->rendererForRootBackground();
if (rootRenderer->style()->backgroundClip() == TextFillBox)
return false;
return true;
}
