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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 CONTENT_BROWSER_RENDERER_HOST_INPUT_GESTURE_EVENT_PACKET_H_ | |
6 #define CONTENT_BROWSER_RENDERER_HOST_INPUT_GESTURE_EVENT_PACKET_H_ | |
7 | |
8 #include "content/common/content_export.h" | |
9 #include "third_party/WebKit/public/web/WebInputEvent.h" | |
10 | |
11 namespace content { | |
12 | |
13 // Acts as a transport container for gestures created (directly or indirectly) | |
14 // by a touch event. | |
15 class CONTENT_EXPORT GestureEventPacket { | |
16 public: | |
17 enum GestureSource { | |
18 UNDEFINED = -1, // Used only for a default-constructed packet. | |
19 INVALID, // The source of the gesture was invalid. | |
20 TOUCH_SEQUENCE_START, // The start of a new gesture sequence. | |
21 TOUCH_SEQUENCE_END, // The end of gesture sequence. | |
22 TOUCH_START, // A touch down occured during a gesture sequence. | |
23 TOUCH_MOVE, // A touch move occured during a gesture sequence. | |
24 TOUCH_END, // A touch up occured during a gesture sequence. | |
25 TOUCH_TIMEOUT, // Timeout from an existing gesture sequence. | |
26 }; | |
27 | |
28 GestureEventPacket(); | |
29 GestureEventPacket(const GestureEventPacket& other); | |
30 ~GestureEventPacket(); | |
31 GestureEventPacket& operator=(const GestureEventPacket& other); | |
32 | |
33 // Factory methods for creating a packet from a particular event. | |
34 static GestureEventPacket FromTouch(const blink::WebTouchEvent& event); | |
35 static GestureEventPacket FromTouchTimeout( | |
36 const blink::WebGestureEvent& event); | |
37 | |
38 void Push(const blink::WebGestureEvent& gesture); | |
39 | |
40 const blink::WebGestureEvent& gesture(size_t i) const { return gestures_[i]; } | |
41 size_t gesture_count() const { return gesture_count_; } | |
42 GestureSource gesture_source() const { return gesture_source_; } | |
43 | |
44 private: | |
45 explicit GestureEventPacket(GestureSource source); | |
46 | |
47 enum { kMaxGesturesPerTouch = 5 }; | |
48 blink::WebGestureEvent gestures_[kMaxGesturesPerTouch]; | |
49 size_t gesture_count_; | |
50 GestureSource gesture_source_; | |
51 }; | |
52 | |
53 } // namespace content | |
54 | |
55 #endif // CONTENT_BROWSER_RENDERER_HOST_INPUT_GESTURE_EVENT_PACKET_H_ | |
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