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// Copyright (c) 2011 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "views/touchui/touch_factory.h"
#include <gdk/gdkx.h>
#include <X11/extensions/XInput2.h>
#include "base/logging.h"
namespace views {
// static
TouchFactory* TouchFactory::GetInstance() {
return Singleton<TouchFactory>::get();
}
TouchFactory::TouchFactory()
: touch_device_lookup_(),
touch_device_list_() {
}
void TouchFactory::SetTouchDeviceList(
const std::vector<unsigned int>& devices) {
touch_device_lookup_.reset();
touch_device_list_.clear();
for (std::vector<unsigned int>::const_iterator iter = devices.begin();
iter != devices.end(); ++iter) {
DCHECK(*iter < touch_device_lookup_.size());
touch_device_lookup_[*iter] = true;
touch_device_list_.push_back(*iter);
}
}
bool TouchFactory::IsTouchDevice(unsigned deviceid) {
return deviceid < touch_device_lookup_.size() ?
touch_device_lookup_[deviceid] : false;
}
bool TouchFactory::GrabTouchDevices(Display* display, ::Window window) {
if (touch_device_list_.empty())
return true;
unsigned char mask[(XI_LASTEVENT + 7) / 8];
bool success = true;
memset(mask, 0, sizeof(mask));
XISetMask(mask, XI_ButtonPress);
XISetMask(mask, XI_ButtonRelease);
XISetMask(mask, XI_Motion);
XIEventMask evmask;
evmask.mask_len = sizeof(mask);
evmask.mask = mask;
for (std::vector<int>::const_iterator iter =
touch_device_list_.begin();
iter != touch_device_list_.end(); ++iter) {
evmask.deviceid = *iter;
Status status = XIGrabDevice(display, *iter, window, CurrentTime, None,
GrabModeAsync, GrabModeAsync, False, &evmask);
success = success && status == GrabSuccess;
}
return success;
}
bool TouchFactory::UngrabTouchDevices(Display* display) {
bool success = true;
for (std::vector<int>::const_iterator iter =
touch_device_list_.begin();
iter != touch_device_list_.end(); ++iter) {
Status status = XIUngrabDevice(display, *iter, CurrentTime);
success = success && status == GrabSuccess;
}
return success;
}
} // namespace views
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