| /**************************************************************************** |
| ** |
| ** Copyright (C) 2016 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the plugins module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL$ |
| ** Commercial License Usage |
| ** Licensees holding valid commercial Qt licenses may use this file in |
| ** accordance with the commercial license agreement provided with the |
| ** Software or, alternatively, in accordance with the terms contained in |
| ** a written agreement between you and The Qt Company. For licensing terms |
| ** and conditions see https://www.qt.io/terms-conditions. For further |
| ** information use the contact form at https://www.qt.io/contact-us. |
| ** |
| ** GNU Lesser General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU Lesser |
| ** General Public License version 3 as published by the Free Software |
| ** Foundation and appearing in the file LICENSE.LGPL3 included in the |
| ** packaging of this file. Please review the following information to |
| ** ensure the GNU Lesser General Public License version 3 requirements |
| ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. |
| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 2.0 or (at your option) the GNU General |
| ** Public license version 3 or any later version approved by the KDE Free |
| ** Qt Foundation. The licenses are as published by the Free Software |
| ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 |
| ** included in the packaging of this file. Please review the following |
| ** information to ensure the GNU General Public License requirements will |
| ** be met: https://www.gnu.org/licenses/gpl-2.0.html and |
| ** https://www.gnu.org/licenses/gpl-3.0.html. |
| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #include "qevdevtouchmanager_p.h" |
| #include "qevdevtouchhandler_p.h" |
| |
| #include <QtInputSupport/private/qevdevutil_p.h> |
| |
| #include <QStringList> |
| #include <QGuiApplication> |
| #include <QLoggingCategory> |
| #include <QtDeviceDiscoverySupport/private/qdevicediscovery_p.h> |
| #include <private/qguiapplication_p.h> |
| #include <private/qinputdevicemanager_p_p.h> |
| #include <private/qmemory_p.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| Q_DECLARE_LOGGING_CATEGORY(qLcEvdevTouch) |
| |
| QEvdevTouchManager::QEvdevTouchManager(const QString &key, const QString &specification, QObject *parent) |
| : QObject(parent) |
| { |
| Q_UNUSED(key); |
| |
| if (qEnvironmentVariableIsSet("QT_QPA_EVDEV_DEBUG")) |
| const_cast<QLoggingCategory &>(qLcEvdevTouch()).setEnabled(QtDebugMsg, true); |
| |
| QString spec = QString::fromLocal8Bit(qgetenv("QT_QPA_EVDEV_TOUCHSCREEN_PARAMETERS")); |
| |
| if (spec.isEmpty()) |
| spec = specification; |
| |
| auto parsed = QEvdevUtil::parseSpecification(spec); |
| m_spec = std::move(parsed.spec); |
| |
| for (const QString &device : qAsConst(parsed.devices)) |
| addDevice(device); |
| |
| // when no devices specified, use device discovery to scan and monitor |
| if (parsed.devices.isEmpty()) { |
| qCDebug(qLcEvdevTouch, "evdevtouch: Using device discovery"); |
| if (auto deviceDiscovery = QDeviceDiscovery::create(QDeviceDiscovery::Device_Touchpad | QDeviceDiscovery::Device_Touchscreen, this)) { |
| const QStringList devices = deviceDiscovery->scanConnectedDevices(); |
| for (const QString &device : devices) |
| addDevice(device); |
| |
| connect(deviceDiscovery, &QDeviceDiscovery::deviceDetected, |
| this, &QEvdevTouchManager::addDevice); |
| connect(deviceDiscovery, &QDeviceDiscovery::deviceRemoved, |
| this, &QEvdevTouchManager::removeDevice); |
| } |
| } |
| } |
| |
| QEvdevTouchManager::~QEvdevTouchManager() |
| { |
| } |
| |
| void QEvdevTouchManager::addDevice(const QString &deviceNode) |
| { |
| qCDebug(qLcEvdevTouch, "evdevtouch: Adding device at %ls", qUtf16Printable(deviceNode)); |
| auto handler = qt_make_unique<QEvdevTouchScreenHandlerThread>(deviceNode, m_spec); |
| if (handler) { |
| connect(handler.get(), &QEvdevTouchScreenHandlerThread::touchDeviceRegistered, this, &QEvdevTouchManager::updateInputDeviceCount); |
| m_activeDevices.add(deviceNode, std::move(handler)); |
| } else { |
| qWarning("evdevtouch: Failed to open touch device %ls", qUtf16Printable(deviceNode)); |
| } |
| } |
| |
| void QEvdevTouchManager::removeDevice(const QString &deviceNode) |
| { |
| if (m_activeDevices.remove(deviceNode)) { |
| qCDebug(qLcEvdevTouch, "evdevtouch: Removing device at %ls", qUtf16Printable(deviceNode)); |
| updateInputDeviceCount(); |
| } |
| } |
| |
| void QEvdevTouchManager::updateInputDeviceCount() |
| { |
| int registeredTouchDevices = 0; |
| for (const auto &device : m_activeDevices) { |
| if (device.handler->isTouchDeviceRegistered()) |
| ++registeredTouchDevices; |
| } |
| |
| qCDebug(qLcEvdevTouch, "evdevtouch: Updating QInputDeviceManager device count: %d touch devices, %d pending handler(s)", |
| registeredTouchDevices, m_activeDevices.count() - registeredTouchDevices); |
| |
| QInputDeviceManagerPrivate::get(QGuiApplicationPrivate::inputDeviceManager())->setDeviceCount( |
| QInputDeviceManager::DeviceTypeTouch, registeredTouchDevices); |
| } |
| |
| QT_END_NAMESPACE |