Move touch CTM from X into Chrome

ui/events/x/events_x.cc

 // Copyright (c) 2012 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 "ui/events/event_constants.h"
 
 #include <cmath>
 #include <string.h>
 #include <X11/extensions/XInput.h>
 #include <X11/extensions/XInput2.h>
@@ skipping 416 matching lines @@
     case LeaveNotify:
       return gfx::Point(native_event->xcrossing.x, native_event->xcrossing.y);
     case ButtonPress:
     case ButtonRelease:
       return gfx::Point(native_event->xbutton.x, native_event->xbutton.y);
     case MotionNotify:
       return gfx::Point(native_event->xmotion.x, native_event->xmotion.y);
     case GenericEvent: {
       XIDeviceEvent* xievent =
           static_cast<XIDeviceEvent*>(native_event->xcookie.data);
-      return gfx::Point(static_cast<int>(xievent->event_x),
-                        static_cast<int>(xievent->event_y));
+      float x = xievent->event_x;
+      float y = xievent->event_y;
+#if defined(OS_CHROMEOS)
+      ui::EventType type = ui::EventTypeFromNative(native_event);
+      switch (type) {

[sadrul, 2014/03/15 19:32:51]

Let's do this for xievent->evtype == XI_Touch* events only.

[Yufeng Shen (Slow to review), 2014/04/29 20:34:18]

Done.

+        case ui::ET_TOUCH_MOVED:
+        case ui::ET_TOUCH_PRESSED:
+        case ui::ET_TOUCH_CANCELLED:
+        case ui::ET_TOUCH_RELEASED: {
+          ui::DeviceDataManager::GetInstance()->ApplyTouchCTM(
+              xievent->deviceid, &x, &y);
+          break;
+        }
+        default:
+          break;
+      }
+#endif  // defined(OS_CHROMEOS)
+      return gfx::Point(static_cast<int>(x), static_cast<int>(y));
     }
   }
   return gfx::Point();
 }
 
 gfx::Point EventSystemLocationFromNative(
     const base::NativeEvent& native_event) {
   switch (native_event->type) {
     case EnterNotify:
     case LeaveNotify: {
@@ skipping 224 matching lines @@
 
 bool IsNaturalScrollEnabled() {
   return DeviceDataManager::GetInstance()->natural_scroll_enabled();
 }
 
 bool IsTouchpadEvent(const base::NativeEvent& event) {
   return DeviceDataManager::GetInstance()->IsTouchpadXInputEvent(event);
 }
 
 }  // namespace ui