bool WebCompositorInputHandlerImpl::touchpadFlingScroll(const WebPoint& increment)
{
WebMouseWheelEvent syntheticWheel;
syntheticWheel.type = WebInputEvent::MouseWheel;
syntheticWheel.deltaX = increment.x;
syntheticWheel.deltaY = increment.y;
syntheticWheel.hasPreciseScrollingDeltas = true;
syntheticWheel.x = m_flingParameters.point.x;
syntheticWheel.y = m_flingParameters.point.y;
syntheticWheel.globalX = m_flingParameters.globalPoint.x;
syntheticWheel.globalY = m_flingParameters.globalPoint.y;
syntheticWheel.modifiers = m_flingParameters.modifiers;
WebCompositorInputHandlerImpl::EventDisposition disposition = handleInputEventInternal(syntheticWheel);
switch (disposition) {
case DidHandle:
return true;
case DropEvent:
break;
case DidNotHandle:
TRACE_EVENT_INSTANT0("webkit", "WebCompositorInputHandlerImpl::scrollBy::AbortFling");
// If we got a DidNotHandle, that means we need to deliver wheels on the main thread.
// In this case we need to schedule a commit and transfer the fling curve over to the main
// thread and run the rest of the wheels from there.
// This can happen when flinging a page that contains a scrollable subarea that we can't
// scroll on the thread if the fling starts outside the subarea but then is flung "under" the
// pointer.
m_client->transferActiveWheelFlingAnimation(m_flingParameters);
m_flingActiveOnMainThread = true;
cancelCurrentFling();
break;
}
return false;
}
void WebCompositorInputHandlerImpl::scrollBy(const IntPoint& increment)
{
if (increment == IntPoint::zero())
return;
TRACE_EVENT2("cc", "WebCompositorInputHandlerImpl::scrollBy", "x", increment.x(), "y", increment.y());
WebMouseWheelEvent event;
event.type = WebInputEvent::MouseWheel;
event.deltaX = -increment.x();
event.deltaY = -increment.y();
event.hasPreciseScrollingDeltas = true;
event.x = m_wheelFlingPoint.x();
event.y = m_wheelFlingPoint.y();
WebCompositorInputHandlerImpl::EventDisposition disposition = handleInputEventInternal(event);
switch (disposition) {
case DidHandle:
case DropEvent:
break;
case DidNotHandle:
TRACE_EVENT_INSTANT0("cc", "WebCompositorInputHandlerImpl::scrollBy::AbortFling");
// FIXME: If we got a DidNotHandle, that means we need to deliver wheels on the main thread.
// In this case we need to schedule a commit and transfer the fling curve over to the main
// thread and run the rest of the wheels from there.
// This can happen when flinging a page that contains a scrollable subarea that we can't
// scroll on the thread if the fling starts outside the subarea but then is flung "under" the
// pointer.
// For now, just abort the fling.
cancelCurrentFling();
}
}
void WebCompositorInputHandlerImpl::handleInputEvent(const WebInputEvent& event)
{
ASSERT(m_client);
WebCompositorInputHandlerImpl::EventDisposition disposition = handleInputEventInternal(event);
switch (disposition) {
case DidHandle:
m_client->didHandleInputEvent();
break;
case DidNotHandle:
m_client->didNotHandleInputEvent(true /* sendToWidget */);
break;
case DropEvent:
m_client->didNotHandleInputEvent(false /* sendToWidget */);
break;
}
}
void WebCompositorInputHandlerImpl::handleInputEvent(const WebInputEvent& event)
{
ASSERT(m_client);
WebCompositorInputHandlerImpl::EventDisposition disposition = handleInputEventInternal(event);
switch (disposition) {
case DidHandle:
m_client->didHandleInputEvent();
break;
case DidNotHandle:
m_client->didNotHandleInputEvent(true /* sendToWidget */);
break;
case DropEvent:
m_client->didNotHandleInputEvent(false /* sendToWidget */);
break;
}
if (event.modifiers & WebInputEvent::IsLastInputEventForCurrentVSync)
m_inputHandlerClient->didReceiveLastInputEventForVSync();
}