1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
|
/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ANDROID_MULTITOUCH_SCREEN_H_
#define ANDROID_MULTITOUCH_SCREEN_H_
#include "android/multitouch-port.h"
/*
* Encapsulates functionality of multi-touch screen. Main task of this component
* is to report touch events to the emulated system via event device (see
* hw/goldfish_events_device.c) The source of touch events can be a mouse, or an
* actual android device that is used for multi-touch emulation. Note that since
* we need to simultaneousely support a mouse and a device as event source, we
* need to know which one has sent us a touch event. This is important for proper
* tracking of pointer IDs when multitouch is in play.
*/
/* Defines a source of multi-touch event. This is used to properly track
* pointer IDs.
*/
typedef enum MTESource {
/* The event is associated with a mouse. */
MTES_MOUSE,
/* The event is associated with an actual android device. */
MTES_DEVICE,
} MTESource;
/* Initializes MTSState instance.
* Param:
* mtsp - Instance of the multi-touch port connected to the device.
*/
extern void multitouch_init(AndroidMTSPort* mtsp);
/* Handles a MT pointer event.
* Param:
* source - Identifies the source of the event (mouse or a device).
* tracking_id - Tracking ID of the pointer.
* x, y - Pointer coordinates,
* pressure - Pressure value for the pointer.
*/
extern void multitouch_update_pointer(MTESource source,
int tracking_id,
int x,
int y,
int pressure);
/* Gets maximum slot index available for the multi-touch emulation. */
extern int multitouch_get_max_slot();
/* Saves screen size reported by the device that emulates multi-touch. */
extern void multitouch_set_device_screen_size(int width, int height);
#endif /* ANDROID_MULTITOUCH_SCREEN_H_ */
|
