src/ui/events/gestures/gesture_provider_aura.h

   1 // Copyright 2014 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 UI_EVENTS_GESTURE_DETECTION_UI_GESTURE_PROVIDER_H_
   6 #define UI_EVENTS_GESTURE_DETECTION_UI_GESTURE_PROVIDER_H_
   7
   8 #include "base/basictypes.h"
   9 #include "ui/events/event.h"
  10 #include "ui/events/events_export.h"
  11 #include "ui/events/gesture_detection/filtered_gesture_provider.h"
  12 #include "ui/events/gesture_detection/gesture_event_data_packet.h"
  13 #include "ui/events/gesture_detection/touch_disposition_gesture_filter.h"
  14 #include "ui/events/gestures/motion_event_aura.h"
  15
  16 namespace ui {
  17
  18 class EVENTS_EXPORT GestureProviderAuraClient {
  19  public:
  20   virtual ~GestureProviderAuraClient() {}
  21   virtual void OnGestureEvent(GestureEvent* event) = 0;
  22 };
  23
  24 // Provides gesture detection and dispatch given a sequence of touch events
  25 // and touch event acks.
  26 class EVENTS_EXPORT GestureProviderAura : public GestureProviderClient {
  27  public:
  28   GestureProviderAura(GestureProviderAuraClient* client);
  29   virtual ~GestureProviderAura();
  30
  31   bool OnTouchEvent(const TouchEvent& event);
  32   void OnTouchEventAck(bool event_consumed);
  33   const MotionEventAura& pointer_state() { return pointer_state_; }
  34
  35   // GestureProviderClient implementation
  36   virtual void OnGestureEvent(const GestureEventData& gesture) OVERRIDE;
  37
  38  private:
  39   GestureProviderAuraClient* client_;
  40   MotionEventAura pointer_state_;
  41   FilteredGestureProvider filtered_gesture_provider_;
  42
  43   int last_touch_event_flags_;
  44
  45   DISALLOW_COPY_AND_ASSIGN(GestureProviderAura);
  46 };
  47
  48 }  // namespace ui
  49
  50 #endif  // UI_EVENTS_GESTURE_DETECTION_UI_GESTURE_PROVIDER_H_