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/****************************************************************************
**
** 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) << "evdevtouch: Adding device at" << deviceNode;
QEvdevTouchScreenHandlerThread *handler;
handler = new QEvdevTouchScreenHandlerThread(deviceNode, m_spec);
if (handler) {
m_activeDevices.insert(deviceNode, handler);
connect(handler, &QEvdevTouchScreenHandlerThread::touchDeviceRegistered, this, &QEvdevTouchManager::updateInputDeviceCount);
} else {
qWarning("evdevtouch: Failed to open touch device %s", qPrintable(deviceNode));
}
}
void QEvdevTouchManager::removeDevice(const QString &deviceNode)
{
if (m_activeDevices.contains(deviceNode)) {
qCDebug(qLcEvdevTouch) << "evdevtouch: Removing device at" << deviceNode;
QEvdevTouchScreenHandlerThread *handler = m_activeDevices.value(deviceNode);
m_activeDevices.remove(deviceNode);
delete handler;
updateInputDeviceCount();
}
}
void QEvdevTouchManager::updateInputDeviceCount()
{
int registeredTouchDevices = 0;
Q_FOREACH (QEvdevTouchScreenHandlerThread *handler, m_activeDevices) {
if (handler->isTouchDeviceRegistered())
++registeredTouchDevices;
}
qCDebug(qLcEvdevTouch) << "evdevtouch: Updating QInputDeviceManager device count:" << registeredTouchDevices << " touch devices,"
<< m_activeDevices.count() - registeredTouchDevices << "pending handler(s)" ;
QInputDeviceManagerPrivate::get(QGuiApplicationPrivate::inputDeviceManager())->setDeviceCount(
QInputDeviceManager::DeviceTypeTouch, registeredTouchDevices);
}
QT_END_NAMESPACE
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