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1 // Copyright (c) 2011 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 #include "views/touchui/touch_factory.h" | |
6 | |
7 #include <gdk/gdkx.h> | |
8 #include <X11/extensions/XInput2.h> | |
9 | |
10 #include "base/logging.h" | |
11 | |
12 namespace views { | |
13 | |
14 // static | |
15 TouchFactory* TouchFactory::GetInstance() { | |
16 return Singleton<TouchFactory>::get(); | |
17 } | |
18 | |
19 TouchFactory::TouchFactory() | |
20 : touch_device_lookup_(), | |
21 touch_device_list_() { | |
22 } | |
23 | |
24 void TouchFactory::SetTouchDeviceList( | |
25 const std::vector<unsigned int>& devices) { | |
26 touch_device_lookup_.reset(); | |
27 touch_device_list_.clear(); | |
28 for (std::vector<unsigned int>::const_iterator iter = devices.begin(); | |
29 iter != devices.end(); ++iter) { | |
30 DCHECK(*iter < touch_device_lookup_.size()); | |
31 touch_device_lookup_[*iter] = true; | |
32 touch_device_list_.push_back(*iter); | |
33 } | |
34 } | |
35 | |
36 bool TouchFactory::IsTouchDevice(unsigned deviceid) { | |
37 return deviceid < touch_device_lookup_.size() ? | |
38 touch_device_lookup_[deviceid] : false; | |
39 } | |
40 | |
41 bool TouchFactory::GrabTouchDevices(Display* display, ::Window window) { | |
42 if (touch_device_list_.empty()) | |
43 return true; | |
44 | |
45 unsigned char mask[(XI_LASTEVENT + 7) / 8]; | |
46 bool success = true; | |
47 | |
48 memset(mask, 0, sizeof(mask)); | |
49 XISetMask(mask, XI_ButtonPress); | |
50 XISetMask(mask, XI_ButtonRelease); | |
51 XISetMask(mask, XI_Motion); | |
52 | |
53 XIEventMask evmask; | |
54 evmask.mask_len = sizeof(mask); | |
55 evmask.mask = mask; | |
56 for (std::vector<int>::const_iterator iter = | |
57 touch_device_list_.begin(); | |
58 iter != touch_device_list_.end(); ++iter) { | |
59 evmask.deviceid = *iter; | |
60 Status status = XIGrabDevice(display, *iter, window, CurrentTime, None, | |
61 GrabModeAsync, GrabModeAsync, False, &evmask); | |
62 success = success && status == GrabSuccess; | |
63 } | |
64 | |
65 return success; | |
66 } | |
67 | |
68 bool TouchFactory::UngrabTouchDevices(Display* display) { | |
69 bool success = true; | |
70 for (std::vector<int>::const_iterator iter = | |
71 touch_device_list_.begin(); | |
72 iter != touch_device_list_.end(); ++iter) { | |
73 Status status = XIUngrabDevice(display, *iter, CurrentTime); | |
74 success = success && status == GrabSuccess; | |
75 } | |
76 return success; | |
77 } | |
78 | |
79 } // namespace views | |
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