| 1 | // Copyright (C) 2016 The Qt Company Ltd. |
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| 2 | // 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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| 3 | |
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| 4 | #include "qevdevtabletmanager_p.h" |
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| 5 | #include "qevdevtablethandler_p.h" |
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| 6 | |
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| 7 | #include <QtInputSupport/private/qevdevutil_p.h> |
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| 8 | |
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| 9 | #include <QStringList> |
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| 10 | #include <QGuiApplication> |
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| 11 | #include <QLoggingCategory> |
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| 12 | #include <QtDeviceDiscoverySupport/private/qdevicediscovery_p.h> |
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| 13 | #include <private/qguiapplication_p.h> |
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| 14 | #include <private/qinputdevicemanager_p_p.h> |
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| 15 | |
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| 16 | QT_BEGIN_NAMESPACE |
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| 17 | |
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| 18 | QEvdevTabletManager::QEvdevTabletManager(const QString &key, const QString &specification, QObject *parent) |
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| 19 | : QObject(parent) |
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| 20 | { |
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| 21 | Q_UNUSED(key); |
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| 22 | |
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| 23 | if (qEnvironmentVariableIsSet(varName: "QT_QPA_EVDEV_DEBUG" )) |
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| 24 | const_cast<QLoggingCategory &>(qLcEvdevTablet()).setEnabled(type: QtDebugMsg, enable: true); |
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| 25 | |
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| 26 | QString spec = qEnvironmentVariable(varName: "QT_QPA_EVDEV_TABLET_PARAMETERS" ); |
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| 27 | |
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| 28 | if (spec.isEmpty()) |
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| 29 | spec = specification; |
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| 30 | |
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| 31 | auto parsed = QEvdevUtil::parseSpecification(specification: spec); |
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| 32 | m_spec = std::move(parsed.spec); |
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| 33 | |
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| 34 | for (const QString &device : std::as_const(t&: parsed.devices)) |
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| 35 | addDevice(deviceNode: device); |
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| 36 | |
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| 37 | // when no devices specified, use device discovery to scan and monitor |
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| 38 | if (parsed.devices.isEmpty()) { |
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| 39 | qCDebug(qLcEvdevTablet, "evdevtablet: Using device discovery" ); |
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| 40 | if (auto deviceDiscovery = QDeviceDiscovery::create(type: QDeviceDiscovery::Device_Tablet, parent: this)) { |
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| 41 | const QStringList devices = deviceDiscovery->scanConnectedDevices(); |
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| 42 | for (const QString &device : devices) |
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| 43 | addDevice(deviceNode: device); |
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| 44 | |
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| 45 | connect(sender: deviceDiscovery, signal: &QDeviceDiscovery::deviceDetected, |
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| 46 | context: this, slot: &QEvdevTabletManager::addDevice); |
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| 47 | connect(sender: deviceDiscovery, signal: &QDeviceDiscovery::deviceRemoved, |
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| 48 | context: this, slot: &QEvdevTabletManager::removeDevice); |
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| 49 | } |
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| 50 | } |
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| 51 | } |
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| 52 | |
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| 53 | QEvdevTabletManager::~QEvdevTabletManager() |
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| 54 | { |
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| 55 | } |
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| 56 | |
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| 57 | void QEvdevTabletManager::addDevice(const QString &deviceNode) |
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| 58 | { |
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| 59 | qCDebug(qLcEvdevTablet, "Adding device at %ls" , qUtf16Printable(deviceNode)); |
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| 60 | auto handler = std::make_unique<QEvdevTabletHandlerThread>(args: deviceNode, args&: m_spec); |
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| 61 | if (handler) { |
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| 62 | m_activeDevices.add(deviceNode, handler: std::move(handler)); |
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| 63 | updateDeviceCount(); |
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| 64 | } else { |
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| 65 | qWarning(msg: "evdevtablet: Failed to open tablet device %ls" , qUtf16Printable(deviceNode)); |
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| 66 | } |
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| 67 | } |
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| 68 | |
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| 69 | void QEvdevTabletManager::removeDevice(const QString &deviceNode) |
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| 70 | { |
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| 71 | if (m_activeDevices.remove(deviceNode)) { |
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| 72 | qCDebug(qLcEvdevTablet, "Removing device at %ls" , qUtf16Printable(deviceNode)); |
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| 73 | updateDeviceCount(); |
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| 74 | } |
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| 75 | } |
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| 76 | |
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| 77 | void QEvdevTabletManager::updateDeviceCount() |
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| 78 | { |
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| 79 | QInputDeviceManagerPrivate::get(mgr: QGuiApplicationPrivate::inputDeviceManager())->setDeviceCount( |
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| 80 | type: QInputDeviceManager::DeviceTypeTablet, count: m_activeDevices.count()); |
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| 81 | } |
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| 82 | |
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| 83 | QT_END_NAMESPACE |
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| 84 | |
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