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39
40#include "qevdevtabletmanager_p.h"
41#include "qevdevtablethandler_p.h"
42
43#include <QtInputSupport/private/qevdevutil_p.h>
44
45#include <QStringList>
46#include <QGuiApplication>
47#include <QLoggingCategory>
48#include <QtDeviceDiscoverySupport/private/qdevicediscovery_p.h>
49#include <private/qguiapplication_p.h>
50#include <private/qinputdevicemanager_p_p.h>
51#include <private/qmemory_p.h>
52
53QT_BEGIN_NAMESPACE
54
55Q_DECLARE_LOGGING_CATEGORY(qLcEvdevTablet)
56
57QEvdevTabletManager::QEvdevTabletManager(const QString &key, const QString &specification, QObject *parent)
58 : QObject(parent)
59{
60 Q_UNUSED(key);
61
62 if (qEnvironmentVariableIsSet("QT_QPA_EVDEV_DEBUG"))
63 const_cast<QLoggingCategory &>(qLcEvdevTablet()).setEnabled(QtDebugMsg, true);
64
65 QString spec = QString::fromLocal8Bit(qgetenv("QT_QPA_EVDEV_TABLET_PARAMETERS"));
66
67 if (spec.isEmpty())
68 spec = specification;
69
70 auto parsed = QEvdevUtil::parseSpecification(spec);
71 m_spec = std::move(parsed.spec);
72
73 for (const QString &device : qAsConst(parsed.devices))
74 addDevice(device);
75
76 // when no devices specified, use device discovery to scan and monitor
77 if (parsed.devices.isEmpty()) {
78 qCDebug(qLcEvdevTablet, "evdevtablet: Using device discovery");
79 if (auto deviceDiscovery = QDeviceDiscovery::create(QDeviceDiscovery::Device_Tablet, this)) {
80 const QStringList devices = deviceDiscovery->scanConnectedDevices();
81 for (const QString &device : devices)
82 addDevice(device);
83
84 connect(deviceDiscovery, &QDeviceDiscovery::deviceDetected,
85 this, &QEvdevTabletManager::addDevice);
86 connect(deviceDiscovery, &QDeviceDiscovery::deviceRemoved,
87 this, &QEvdevTabletManager::removeDevice);
88 }
89 }
90}
91
92QEvdevTabletManager::~QEvdevTabletManager()
93{
94}
95
96void QEvdevTabletManager::addDevice(const QString &deviceNode)
97{
98 qCDebug(qLcEvdevTablet, "Adding device at %ls", qUtf16Printable(deviceNode));
99 auto handler = qt_make_unique<QEvdevTabletHandlerThread>(deviceNode, m_spec);
100 if (handler) {
101 m_activeDevices.add(deviceNode, std::move(handler));
102 updateDeviceCount();
103 } else {
104 qWarning("evdevtablet: Failed to open tablet device %ls", qUtf16Printable(deviceNode));
105 }
106}
107
108void QEvdevTabletManager::removeDevice(const QString &deviceNode)
109{
110 if (m_activeDevices.remove(deviceNode)) {
111 qCDebug(qLcEvdevTablet, "Removing device at %ls", qUtf16Printable(deviceNode));
112 updateDeviceCount();
113 }
114}
115
116void QEvdevTabletManager::updateDeviceCount()
117{
118 QInputDeviceManagerPrivate::get(QGuiApplicationPrivate::inputDeviceManager())->setDeviceCount(
119 QInputDeviceManager::DeviceTypeTablet, m_activeDevices.count());
120}
121
122QT_END_NAMESPACE
123