Add support for new scroll valuators coming from CMT

ui/base/events.h

 // 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.
 
 #ifndef UI_BASE_EVENTS_H_
 #define UI_BASE_EVENTS_H_
 #pragma once
 
 #include "base/event_types.h"
 #include "ui/base/keycodes/keyboard_codes.h"
@@ skipping 17 matching lines @@
   ET_KEY_PRESSED,
   ET_KEY_RELEASED,
   ET_MOUSEWHEEL,
   ET_TOUCH_RELEASED,
   ET_TOUCH_PRESSED,
   ET_TOUCH_MOVED,
   ET_TOUCH_STATIONARY,
   ET_TOUCH_CANCELLED,
   ET_DROP_TARGET_EVENT,
   ET_FOCUS_CHANGE,
+  ET_SCROLL,
 };
 
 // Event flags currently supported
 enum EventFlags {
   EF_CAPS_LOCK_DOWN     = 1 << 0,
   EF_SHIFT_DOWN         = 1 << 1,
   EF_CONTROL_DOWN       = 1 << 2,
   EF_ALT_DOWN           = 1 << 3,
   EF_LEFT_BUTTON_DOWN   = 1 << 4,
   EF_MIDDLE_BUTTON_DOWN = 1 << 5,
@@ skipping 56 matching lines @@
 // Gets the radius along the X/Y axis from a native event. Default is 1.0.
 UI_EXPORT float GetTouchRadiusX(const base::NativeEvent& native_event);
 UI_EXPORT float GetTouchRadiusY(const base::NativeEvent& native_event);
 
 // Gets the angle of the major axis away from the X axis. Default is 0.0.
 UI_EXPORT float GetTouchAngle(const base::NativeEvent& native_event);
 
 // Gets the force from a native_event. Normalized to be [0, 1]. Default is 0.0.
 UI_EXPORT float GetTouchForce(const base::NativeEvent& native_event);
 
+UI_EXPORT bool GetScrollOffsets(const base::NativeEvent& native_event,

[Ben Goodger (Google), 2011/12/14 19:01:39]

Offset from what?

[DaveMoore, 2011/12/14 21:26:04]

Scrolls are always deltas. I can use a different word if you like
Distances, Deltas, Amounts, Offsets

On 2011/12/14 19:01:39, Ben Goodger (Google) wrote:

+                                float* x_offset,
+                                float* y_offset);
+
 // Creates and returns no-op event.
 UI_EXPORT base::NativeEvent CreateNoopEvent();
 
 }  // namespace ui
 
 #endif  // UI_BASE_EVENTS_H_