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

third_party/WebKit/Source/core/events/MouseEvent.cpp

 /*
  * Copyright (C) 2001 Peter Kelly (pmk@post.com)
  * Copyright (C) 2001 Tobias Anton (anton@stud.fbi.fh-darmstadt.de)
  * Copyright (C) 2006 Samuel Weinig (sam.weinig@gmail.com)
  * Copyright (C) 2003, 2005, 2006, 2008 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
@@ skipping 33 matching lines @@
     bool isMouseEnterOrLeave = eventType == EventTypeNames::mouseenter || eventType == EventTypeNames::mouseleave;
     bool isCancelable = !isMouseEnterOrLeave;
     bool isBubbling = !isMouseEnterOrLeave;
 
     return MouseEvent::create(
         eventType, isBubbling, isCancelable, view,
         detail, event.globalPosition().x(), event.globalPosition().y(), event.position().x(), event.position().y(),
         event.movementDelta().x(), event.movementDelta().y(),
         event.getModifiers(), event.button(),
         platformModifiersToButtons(event.getModifiers()),
-        relatedTarget, event.timestamp(), event.getSyntheticEventType());
+        relatedTarget, event.timestamp(), event.getSyntheticEventType(), event.region());
 }
 
 PassRefPtrWillBeRawPtr<MouseEvent> MouseEvent::create(const AtomicString& type, bool canBubble, bool cancelable, PassRefPtrWillBeRawPtr<AbstractView> view,
     int detail, int screenX, int screenY, int windowX, int windowY,
     int movementX, int movementY,
     PlatformEvent::Modifiers modifiers,
     short button, unsigned short buttons,
     PassRefPtrWillBeRawPtr<EventTarget> relatedTarget,
     double platformTimeStamp,
-    PlatformMouseEvent::SyntheticEventType syntheticEventType)
+    PlatformMouseEvent::SyntheticEventType syntheticEventType,
+    const String& region)
 {
     return adoptRefWillBeNoop(new MouseEvent(type, canBubble, cancelable, view,
         detail, screenX, screenY, windowX, windowY,
         movementX, movementY,
-        modifiers, button, buttons, relatedTarget, platformTimeStamp, syntheticEventType));
+        modifiers, button, buttons, relatedTarget, platformTimeStamp, syntheticEventType, region));
 }
 
 PassRefPtrWillBeRawPtr<MouseEvent> MouseEvent::create(const AtomicString& eventType, PassRefPtrWillBeRawPtr<AbstractView> view, PassRefPtrWillBeRawPtr<Event> underlyingEvent, SimulatedClickCreationScope creationScope)
 {
     PlatformEvent::Modifiers modifiers = PlatformEvent::NoModifiers;
     if (UIEventWithKeyState* keyStateEvent = findEventWithKeyState(underlyingEvent.get())) {
         modifiers = keyStateEvent->modifiers();
     }
 
     PlatformMouseEvent::SyntheticEventType syntheticType = PlatformMouseEvent::Positionless;
     int screenX = 0;
     int screenY = 0;
     if (underlyingEvent && underlyingEvent->isMouseEvent()) {
         syntheticType = PlatformMouseEvent::RealOrIndistinguishable;
         MouseEvent* mouseEvent = toMouseEvent(underlyingEvent.get());
         screenX = mouseEvent->screenLocation().x();
         screenY = mouseEvent->screenLocation().y();
     }
 
     double timestamp = underlyingEvent ? underlyingEvent->platformTimeStamp() : monotonicallyIncreasingTime();
     RefPtrWillBeRawPtr<MouseEvent> createdEvent = MouseEvent::create(eventType, true, true, view,
         0, screenX, screenY, 0, 0, 0, 0, modifiers, 0, 0, nullptr,
-        timestamp, syntheticType);
+        timestamp, syntheticType, String());
 
     createdEvent->setTrusted(creationScope == SimulatedClickCreationScope::FromUserAgent);
     createdEvent->setUnderlyingEvent(underlyingEvent);
     if (syntheticType == PlatformMouseEvent::RealOrIndistinguishable) {
         MouseEvent* mouseEvent = toMouseEvent(createdEvent->underlyingEvent());
         createdEvent->initCoordinates(mouseEvent->clientLocation());
     }
 
     return createdEvent.release();
 }
 
 MouseEvent::MouseEvent()
     : m_button(0)
     , m_buttons(0)
     , m_relatedTarget(nullptr)
     , m_syntheticEventType(PlatformMouseEvent::RealOrIndistinguishable)
 {
 }
 
 MouseEvent::MouseEvent(const AtomicString& eventType, bool canBubble, bool cancelable, PassRefPtrWillBeRawPtr<AbstractView> view,
     int detail, int screenX, int screenY, int windowX, int windowY,
     int movementX, int movementY,
     PlatformEvent::Modifiers modifiers,
     short button, unsigned short buttons,
     PassRefPtrWillBeRawPtr<EventTarget> relatedTarget,
     double platformTimeStamp,
-    PlatformMouseEvent::SyntheticEventType syntheticEventType)
+    PlatformMouseEvent::SyntheticEventType syntheticEventType,
+    const String& region)
     : MouseRelatedEvent(eventType, canBubble, cancelable, view, detail, IntPoint(screenX, screenY),
         IntPoint(windowX, windowY), IntPoint(movementX, movementY), modifiers,
         platformTimeStamp,
         syntheticEventType == PlatformMouseEvent::Positionless ? PositionType::Positionless : PositionType::Position,
         syntheticEventType == PlatformMouseEvent::FromTouch ? InputDeviceCapabilities::firesTouchEventsSourceCapabilities() : InputDeviceCapabilities::doesntFireTouchEventsSourceCapabilities())
     , m_button(button)
     , m_buttons(buttons)
     , m_relatedTarget(relatedTarget)
     , m_syntheticEventType(syntheticEventType)
+    , m_region(region)
 {
 }
 
 MouseEvent::MouseEvent(const AtomicString& eventType, const MouseEventInit& initializer)
     : MouseRelatedEvent(eventType, initializer)
     , m_button(initializer.button())
     , m_buttons(initializer.buttons())
     , m_relatedTarget(initializer.relatedTarget())
     , m_syntheticEventType(PlatformMouseEvent::RealOrIndistinguishable)
+    , m_region(initializer.region())
 {
 }
 
 MouseEvent::~MouseEvent()
 {
 }
 
 unsigned short MouseEvent::platformModifiersToButtons(unsigned modifiers)
 {
     unsigned short buttons = 0;
@@ skipping 154 matching lines @@
     doubleClickEvent->setTrusted(mouseEvent.isTrusted());
     if (mouseEvent.defaultHandled())
         doubleClickEvent->setDefaultHandled();
     DispatchEventResult doubleClickDispatchResult = EventDispatcher::dispatchEvent(dispatcher.node(), MouseEventDispatchMediator::create(doubleClickEvent));
     if (doubleClickDispatchResult != DispatchEventResult::NotCanceled)
         return doubleClickDispatchResult;
     return dispatchResult;
 }
 
 } // namespace blink