static void accumulateDocumentEventTargetRects(Vector<IntRect>& rects, const Document* document)
{
ASSERT(document);
if (!document->touchEventTargets())
return;
const TouchEventTargetSet* targets = document->touchEventTargets();
for (TouchEventTargetSet::const_iterator iter = targets->begin(); iter != targets->end(); ++iter) {
const Node* touchTarget = iter->key;
if (!touchTarget->inDocument())
continue;
if (touchTarget == document) {
if (RenderView* view = document->renderView()) {
IntRect r = enclosingIntRect(view->clippedOverflowRectForRepaint(0));
if (!r.isEmpty())
rects.append(r);
}
return;
}
if (touchTarget->isDocumentNode() && touchTarget != document) {
accumulateDocumentEventTargetRects(rects, static_cast<const Document*>(touchTarget));
continue;
}
if (RenderObject* renderer = touchTarget->renderer())
accumulateRendererTouchEventTargetRects(rects, renderer);
}
}
static void accumulateRendererTouchEventTargetRects(Vector<IntRect>& rects, const RenderObject* renderer, const IntRect& parentRect = IntRect())
{
IntRect adjustedParentRect = parentRect;
if (parentRect.isEmpty() || renderer->isFloating() || renderer->isPositioned() || renderer->hasTransform()) {
// FIXME: This method is O(N^2) as it walks the tree to the root for every renderer. RenderGeometryMap would fix this.
IntRect r = enclosingIntRect(renderer->clippedOverflowRectForRepaint(0));
if (!r.isEmpty()) {
// Convert to the top-level view's coordinates.
ASSERT(renderer->document()->view());
r = renderer->document()->view()->convertToRootView(r);
if (!parentRect.contains(r)) {
rects.append(r);
adjustedParentRect = r;
}
}
}
for (RenderObject* child = renderer->firstChild(); child; child = child->nextSibling())
accumulateRendererTouchEventTargetRects(rects, child, adjustedParentRect);
}
