Canvas2d: Implement rerouting event by hit region's control.

third_party/WebKit/Source/core/dom/Document.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2011, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2008, 2009, 2011, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) Research In Motion Limited 2010-2011. All rights reserved.
@@ skipping 3200 matching lines @@
     // See also the similar code in EventHandler::hitTestResultAtPoint.
     if (!layoutView() || !view() || !view()->didFirstLayout())
         return MouseEventWithHitTestResults(event, HitTestResult(request, LayoutPoint()));
 
     HitTestResult result(request, documentPoint);
     layoutView()->hitTest(result);
 
     if (!request.readOnly())
         updateHoverActiveState(request, result.innerElement());
 
+    if (isHTMLCanvasElement(result.innerNode())) {
+        PlatformMouseEvent eventWithRegion = event;
+        std::pair<Element*, String> regionInfo = toHTMLCanvasElement(result.innerNode())->getControlAndIdIfHitRegionExists(result.pointInInnerNodeFrame());
+        if (regionInfo.first)
+            result.setInnerNode(regionInfo.first);
+        eventWithRegion.setRegion(regionInfo.second);
+        return MouseEventWithHitTestResults(eventWithRegion, result);
+    }
+
     return MouseEventWithHitTestResults(event, result);
 }
 
 // DOM Section 1.1.1
 bool Document::childTypeAllowed(NodeType type) const
 {
     switch (type) {
     case ATTRIBUTE_NODE:
     case CDATA_SECTION_NODE:
     case DOCUMENT_FRAGMENT_NODE:
@@ skipping 2198 matching lines @@
     if (!std::isfinite(rotationAngle))
         rotationAngle = 0;
     if (!std::isfinite(force))
         force = 0;
 
     // FIXME: It's not clear from the documentation at
     // http://developer.apple.com/library/safari/#documentation/UserExperience/Reference/DocumentAdditionsReference/DocumentAdditions/DocumentAdditions.html
     // when this method should throw and nor is it by inspection of iOS behavior. It would be nice to verify any cases where it throws under iOS
     // and implement them here. See https://bugs.webkit.org/show_bug.cgi?id=47819
     LocalFrame* frame = window && window->isLocalDOMWindow() ? toLocalDOMWindow(window)->frame() : this->frame();
-    return Touch::create(frame, target, identifier, FloatPoint(screenX, screenY), FloatPoint(pageX, pageY), FloatSize(radiusX, radiusY), rotationAngle, force);
+    return Touch::create(frame, target, identifier, FloatPoint(screenX, screenY), FloatPoint(pageX, pageY), FloatSize(radiusX, radiusY), rotationAngle, force, String());
 }
 
 PassRefPtrWillBeRawPtr<TouchList> Document::createTouchList(WillBeHeapVector<RefPtrWillBeMember<Touch>>& touches) const
 {
     return TouchList::adopt(touches);
 }
 
 DocumentLoader* Document::loader() const
 {
     if (!m_frame)
@@ skipping 546 matching lines @@
 #ifndef NDEBUG
 using namespace blink;
 void showLiveDocumentInstances()
 {
     Document::WeakDocumentSet& set = Document::liveDocumentSet();
     fprintf(stderr, "There are %u documents currently alive:\n", set.size());
     for (Document* document : set)
         fprintf(stderr, "- Document %p URL: %s\n", document, document->url().getString().utf8().data());
 }
 #endif