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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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