touchui: support XInput2 MT

views/focus/accelerator_handler_touch.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "views/focus/accelerator_handler.h"
 
 #include <bitset>
 #include <gtk/gtk.h>
 #include <X11/extensions/XInput2.h>
 
@@ skipping 29 matching lines @@
 }  // namespace
 
 bool DispatchX2Event(Widget* widget, XEvent* xev) {
   XGenericEventCookie* cookie = &xev->xcookie;
   switch (cookie->evtype) {
     case XI_KeyPress:
     case XI_KeyRelease: {
       // TODO(sad): We don't capture XInput2 events from keyboard yet.
       break;
     }
-    case XI_ButtonPress:
-    case XI_ButtonRelease:
-    case XI_Motion: {
+    case XI_TouchBegin:
+    case XI_TouchEnd:
+    case XI_TouchUpdate: {
       XIDeviceEvent* xievent = static_cast<XIDeviceEvent*>(cookie->data);
       Event::FromNativeEvent2 from_native;
 
-      // Scrolling the wheel generates press/release events with button id's 4
-      // and 5. In case of a wheelscroll, we do not want to show the cursor.
-      if (xievent->detail == 4 || xievent->detail == 5) {
-        MouseWheelEvent wheelev(xev, from_native);
-        return widget->OnMouseEvent(wheelev);
-      }
-
       // Is the event coming from a touch device?
       if (TouchFactory::GetInstance()->IsTouchDevice(xievent->sourceid)) {
         // Hide the cursor when a touch event comes in.
         TouchFactory::GetInstance()->SetCursorVisible(false, false);
 
-        // With XInput 2.0, XI_ButtonPress and XI_ButtonRelease events are
-        // ignored, as XI_Motion events contain enough data to detect finger
-        // press and release. See more notes in TouchFactory::TouchParam.
-        if (cookie->evtype == XI_ButtonPress ||
-            cookie->evtype == XI_ButtonRelease)
-          return false;
-
         // If the TouchEvent is processed by |root|, then return. Otherwise let
         // it fall through so it can be used as a MouseEvent, if desired.
         TouchEvent touch(xev, from_native);
         if (widget->OnTouchEvent(touch) != ui::TOUCH_STATUS_UNKNOWN)
           return true;
 
         // We do not want to generate a mouse event for an unprocessed touch
         // event here. That is already done by the gesture manager in
         // RootView::OnTouchEvent.
         return false;
       } else {
-        MouseEvent mouseev(xev, from_native);
-
-        // Show the cursor. Start a timer to hide the cursor after a delay on
-        // move (not drag) events, or if the only button pressed is released.
-        bool start_timer = mouseev.type() == ui::ET_MOUSE_MOVED;
-        start_timer |= mouseev.type() == ui::ET_MOUSE_RELEASED &&
-                       (mouseev.IsOnlyLeftMouseButton() ||
-                        mouseev.IsOnlyMiddleMouseButton() ||
-                        mouseev.IsOnlyRightMouseButton());
-        TouchFactory::GetInstance()->SetCursorVisible(true, start_timer);
-
-        return widget->OnMouseEvent(mouseev);
+        return false;
       }
     }
   }
   return false;
 }
 
 bool DispatchXEvent(XEvent* xev) {
   GdkDisplay* gdisp = gdk_display_get_default();
   XID xwindow = xev->xany.window;
 
@@ skipping 57 matching lines @@
 AcceleratorHandler::AcceleratorHandler() {}
 
 base::MessagePumpDispatcher::DispatchStatus
     AcceleratorHandler::Dispatch(XEvent* xev) {
   return DispatchXEvent(xev) ?
       base::MessagePumpDispatcher::EVENT_PROCESSED :
       base::MessagePumpDispatcher::EVENT_IGNORED;
 }
 
 }  // namespace views