381dca29ff
It's slightly more efficient. Change-Id: Id5ac04fc27eee108c8e5fffd786c3d5f793a0a9d Reviewed-by: Ahmad Samir <a.samirh78@gmail.com> (cherry picked from commit db34e27f7f6ade54bfae59e5eed14c05ac508a49) Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
93 lines
3.3 KiB
C++
93 lines
3.3 KiB
C++
// Copyright (C) 2016 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
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#include "qevdevtouchmanager_p.h"
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#include "qevdevtouchhandler_p.h"
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#include <QtInputSupport/private/qevdevutil_p.h>
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#include <QStringList>
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#include <QGuiApplication>
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#include <QLoggingCategory>
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#include <QtDeviceDiscoverySupport/private/qdevicediscovery_p.h>
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#include <private/qguiapplication_p.h>
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#include <private/qinputdevicemanager_p_p.h>
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QT_BEGIN_NAMESPACE
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QEvdevTouchManager::QEvdevTouchManager(const QString &key, const QString &specification, QObject *parent)
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: QObject(parent)
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{
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Q_UNUSED(key);
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if (qEnvironmentVariableIsSet("QT_QPA_EVDEV_DEBUG"))
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const_cast<QLoggingCategory &>(qLcEvdevTouch()).setEnabled(QtDebugMsg, true);
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QString spec = qEnvironmentVariable("QT_QPA_EVDEV_TOUCHSCREEN_PARAMETERS");
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if (spec.isEmpty())
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spec = specification;
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auto parsed = QEvdevUtil::parseSpecification(spec);
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m_spec = std::move(parsed.spec);
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for (const QString &device : std::as_const(parsed.devices))
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addDevice(device);
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// when no devices specified, use device discovery to scan and monitor
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if (parsed.devices.isEmpty()) {
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qCDebug(qLcEvdevTouch, "evdevtouch: Using device discovery");
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if (auto deviceDiscovery = QDeviceDiscovery::create(QDeviceDiscovery::Device_Touchpad | QDeviceDiscovery::Device_Touchscreen, this)) {
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const QStringList devices = deviceDiscovery->scanConnectedDevices();
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for (const QString &device : devices)
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addDevice(device);
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connect(deviceDiscovery, &QDeviceDiscovery::deviceDetected,
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this, &QEvdevTouchManager::addDevice);
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connect(deviceDiscovery, &QDeviceDiscovery::deviceRemoved,
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this, &QEvdevTouchManager::removeDevice);
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}
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}
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}
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QEvdevTouchManager::~QEvdevTouchManager()
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{
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}
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void QEvdevTouchManager::addDevice(const QString &deviceNode)
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{
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qCDebug(qLcEvdevTouch, "evdevtouch: Adding device at %ls", qUtf16Printable(deviceNode));
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auto handler = std::make_unique<QEvdevTouchScreenHandlerThread>(deviceNode, m_spec);
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if (handler) {
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connect(handler.get(), &QEvdevTouchScreenHandlerThread::touchDeviceRegistered, this, &QEvdevTouchManager::updateInputDeviceCount);
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m_activeDevices.add(deviceNode, std::move(handler));
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} else {
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qWarning("evdevtouch: Failed to open touch device %ls", qUtf16Printable(deviceNode));
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}
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}
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void QEvdevTouchManager::removeDevice(const QString &deviceNode)
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{
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if (m_activeDevices.remove(deviceNode)) {
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qCDebug(qLcEvdevTouch, "evdevtouch: Removing device at %ls", qUtf16Printable(deviceNode));
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updateInputDeviceCount();
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}
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}
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void QEvdevTouchManager::updateInputDeviceCount()
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{
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int registeredTouchDevices = 0;
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for (const auto &device : m_activeDevices) {
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if (device.handler->isPointingDeviceRegistered())
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++registeredTouchDevices;
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}
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qCDebug(qLcEvdevTouch, "evdevtouch: Updating QInputDeviceManager device count: %d touch devices, %d pending handler(s)",
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registeredTouchDevices, m_activeDevices.count() - registeredTouchDevices);
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QInputDeviceManagerPrivate::get(QGuiApplicationPrivate::inputDeviceManager())->setDeviceCount(
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QInputDeviceManager::DeviceTypeTouch, registeredTouchDevices);
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}
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QT_END_NAMESPACE
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