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      1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef ASH_TOUCH_TOUCH_OBSERVER_UMA_H_
      6 #define ASH_TOUCH_TOUCH_OBSERVER_UMA_H_
      7 
      8 #include <map>
      9 
     10 #include "ash/shell.h"
     11 #include "base/memory/singleton.h"
     12 #include "ui/gfx/point.h"
     13 #include "ui/views/widget/widget.h"
     14 
     15 namespace aura {
     16 class Window;
     17 }
     18 
     19 namespace ash {
     20 
     21 // Records some touch/gesture event specific details (e.g. what gestures are
     22 // targetted to which components etc.)
     23 class ASH_EXPORT TouchUMA {
     24  public:
     25   enum GestureActionType {
     26     GESTURE_UNKNOWN,
     27     GESTURE_OMNIBOX_PINCH,
     28     GESTURE_OMNIBOX_SCROLL,
     29     GESTURE_TABSTRIP_PINCH,
     30     GESTURE_TABSTRIP_SCROLL,
     31     GESTURE_BEZEL_SCROLL,
     32     GESTURE_DESKTOP_SCROLL,
     33     GESTURE_DESKTOP_PINCH,
     34     GESTURE_WEBPAGE_PINCH,
     35     GESTURE_WEBPAGE_SCROLL,
     36     GESTURE_WEBPAGE_TAP,
     37     GESTURE_TABSTRIP_TAP,
     38     GESTURE_BEZEL_DOWN,
     39     GESTURE_TABSWITCH_TAP,
     40     GESTURE_TABNOSWITCH_TAP,
     41     GESTURE_TABCLOSE_TAP,
     42     GESTURE_NEWTAB_TAP,
     43     GESTURE_ROOTVIEWTOP_TAP,
     44     GESTURE_FRAMEMAXIMIZE_TAP,
     45     GESTURE_FRAMEVIEW_TAP,
     46     GESTURE_MAXIMIZE_DOUBLETAP,
     47     // NOTE: Add new action types only immediately above this line. Also,
     48     // make sure the enum list in tools/histogram/histograms.xml is
     49     // updated with any change in here.
     50     GESTURE_ACTION_COUNT
     51   };
     52 
     53   // Returns the singleton instance.
     54   static TouchUMA* GetInstance();
     55 
     56   void RecordGestureEvent(aura::Window* target,
     57                           const ui::GestureEvent& event);
     58   void RecordGestureAction(GestureActionType action);
     59   void RecordTouchEvent(aura::Window* target,
     60                         const ui::TouchEvent& event);
     61 
     62  private:
     63   friend struct DefaultSingletonTraits<TouchUMA>;
     64 
     65   TouchUMA();
     66   ~TouchUMA();
     67 
     68   void UpdateTouchState(const ui::TouchEvent& event);
     69   GestureActionType FindGestureActionType(aura::Window* window,
     70                                           const ui::GestureEvent& event);
     71 
     72   bool is_single_finger_gesture_;
     73   // These are used to measure the number of touch-start events we receive in a
     74   // quick succession, regardless of the target window.
     75   bool touch_in_progress_;
     76   int burst_length_;
     77   base::TimeDelta last_touch_down_time_;
     78 
     79   DISALLOW_COPY_AND_ASSIGN(TouchUMA);
     80 };
     81 
     82 }  // namespace ash
     83 
     84 #endif  // ASH_TOUCH_TOUCH_OBSERVER_UMA_H_
     85