diff options
Diffstat (limited to 'src/platformsupport/input/evdevtouch/qevdevtouchmanager.cpp')
-rw-r--r-- | src/platformsupport/input/evdevtouch/qevdevtouchmanager.cpp | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/src/platformsupport/input/evdevtouch/qevdevtouchmanager.cpp b/src/platformsupport/input/evdevtouch/qevdevtouchmanager.cpp new file mode 100644 index 0000000000..98fc83700c --- /dev/null +++ b/src/platformsupport/input/evdevtouch/qevdevtouchmanager.cpp @@ -0,0 +1,122 @@ +/**************************************************************************** +** +** Copyright (C) 2015 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ +** +** This file is part of the plugins module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL21$ +** 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 http://www.qt.io/terms-conditions. For further +** information use the contact form at http://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 2.1 or version 3 as published by the Free +** Software Foundation and appearing in the file LICENSE.LGPLv21 and +** LICENSE.LGPLv3 included in the packaging of this file. Please review the +** following information to ensure the GNU Lesser General Public License +** requirements will be met: https://www.gnu.org/licenses/lgpl.html and +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** As a special exception, The Qt Company gives you certain additional +** rights. These rights are described in The Qt Company LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qevdevtouchmanager_p.h" +#include "qevdevtouchhandler_p.h" + +#include <QStringList> +#include <QGuiApplication> +#include <QLoggingCategory> +#include <QtPlatformSupport/private/qdevicediscovery_p.h> +#include <private/qguiapplication_p.h> +#include <private/qinputdevicemanager_p_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; + + QStringList args = spec.split(QLatin1Char(':')); + QStringList devices; + + foreach (const QString &arg, args) { + if (arg.startsWith(QLatin1String("/dev/"))) { + devices.append(arg); + args.removeAll(arg); + } + } + + // build new specification without /dev/ elements + m_spec = args.join(QLatin1Char(':')); + + foreach (const QString &device, devices) + addDevice(device); + + // when no devices specified, use device discovery to scan and monitor + if (devices.isEmpty()) { + qCDebug(qLcEvdevTouch) << "evdevtouch: Using device discovery"; + m_deviceDiscovery = QDeviceDiscovery::create(QDeviceDiscovery::Device_Touchpad | QDeviceDiscovery::Device_Touchscreen, this); + if (m_deviceDiscovery) { + QStringList devices = m_deviceDiscovery->scanConnectedDevices(); + foreach (const QString &device, devices) + addDevice(device); + connect(m_deviceDiscovery, SIGNAL(deviceDetected(QString)), this, SLOT(addDevice(QString))); + connect(m_deviceDiscovery, SIGNAL(deviceRemoved(QString)), this, SLOT(removeDevice(QString))); + } + } +} + +QEvdevTouchManager::~QEvdevTouchManager() +{ + qDeleteAll(m_activeDevices); +} + +void QEvdevTouchManager::addDevice(const QString &deviceNode) +{ + qCDebug(qLcEvdevTouch) << "Adding device at" << deviceNode; + QEvdevTouchScreenHandlerThread *handler; + handler = new QEvdevTouchScreenHandlerThread(deviceNode, m_spec); + if (handler) { + m_activeDevices.insert(deviceNode, handler); + QInputDeviceManagerPrivate::get(QGuiApplicationPrivate::inputDeviceManager())->setDeviceCount( + QInputDeviceManager::DeviceTypeTouch, m_activeDevices.count()); + } else { + qWarning("evdevtouch: Failed to open touch device %s", qPrintable(deviceNode)); + } +} + +void QEvdevTouchManager::removeDevice(const QString &deviceNode) +{ + if (m_activeDevices.contains(deviceNode)) { + qCDebug(qLcEvdevTouch) << "Removing device at" << deviceNode; + QEvdevTouchScreenHandlerThread *handler = m_activeDevices.value(deviceNode); + m_activeDevices.remove(deviceNode); + QInputDeviceManagerPrivate::get(QGuiApplicationPrivate::inputDeviceManager())->setDeviceCount( + QInputDeviceManager::DeviceTypeTouch, m_activeDevices.count()); + delete handler; + } +} + +QT_END_NAMESPACE |