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| ****************************************************************************/ |
| |
| #include "qdevicediscovery_static_p.h" |
| |
| #include <QStringList> |
| #include <QCoreApplication> |
| #include <QObject> |
| #include <QHash> |
| #include <QDir> |
| #include <QLoggingCategory> |
| #include <QtCore/private/qcore_unix_p.h> |
| |
| #ifdef Q_OS_FREEBSD |
| #include <dev/evdev/input.h> |
| #else |
| #include <linux/input.h> |
| #endif |
| #include <fcntl.h> |
| |
| /* android (and perhaps some other linux-derived stuff) don't define everything |
| * in linux/input.h, so we'll need to do that ourselves. |
| */ |
| #ifndef KEY_CNT |
| #define KEY_CNT (KEY_MAX+1) |
| #endif |
| #ifndef REL_CNT |
| #define REL_CNT (REL_MAX+1) |
| #endif |
| #ifndef ABS_CNT |
| #define ABS_CNT (ABS_MAX+1) |
| #endif |
| #ifndef ABS_MT_POSITION_X |
| #define ABS_MT_POSITION_X 0x35 |
| #endif |
| #ifndef ABS_MT_POSITION_Y |
| #define ABS_MT_POSITION_Y 0x36 |
| #endif |
| |
| #define LONG_BITS (sizeof(long) * 8 ) |
| #define LONG_FIELD_SIZE(bits) ((bits / LONG_BITS) + 1) |
| |
| static bool testBit(long bit, const long *field) |
| { |
| return (field[bit / LONG_BITS] >> bit % LONG_BITS) & 1; |
| } |
| |
| QT_BEGIN_NAMESPACE |
| |
| Q_LOGGING_CATEGORY(lcDD, "qt.qpa.input") |
| |
| QDeviceDiscovery *QDeviceDiscovery::create(QDeviceTypes types, QObject *parent) |
| { |
| return new QDeviceDiscoveryStatic(types, parent); |
| } |
| |
| QDeviceDiscoveryStatic::QDeviceDiscoveryStatic(QDeviceTypes types, QObject *parent) |
| : QDeviceDiscovery(types, parent) |
| { |
| qCDebug(lcDD) << "static device discovery for type" << types; |
| } |
| |
| QStringList QDeviceDiscoveryStatic::scanConnectedDevices() |
| { |
| QStringList devices; |
| QDir dir; |
| dir.setFilter(QDir::System); |
| |
| // check for input devices |
| if (m_types & Device_InputMask) { |
| dir.setPath(QString::fromLatin1(QT_EVDEV_DEVICE_PATH)); |
| const auto deviceFiles = dir.entryList(); |
| for (const QString &deviceFile : deviceFiles) { |
| QString absoluteFilePath = dir.absolutePath() + QLatin1Char('/') + deviceFile; |
| if (checkDeviceType(absoluteFilePath)) |
| devices << absoluteFilePath; |
| } |
| } |
| |
| // check for drm devices |
| if (m_types & Device_VideoMask) { |
| dir.setPath(QString::fromLatin1(QT_DRM_DEVICE_PATH)); |
| const auto deviceFiles = dir.entryList(); |
| for (const QString &deviceFile : deviceFiles) { |
| QString absoluteFilePath = dir.absolutePath() + QLatin1Char('/') + deviceFile; |
| if (checkDeviceType(absoluteFilePath)) |
| devices << absoluteFilePath; |
| } |
| } |
| |
| qCDebug(lcDD) << "Found matching devices" << devices; |
| |
| return devices; |
| } |
| |
| bool QDeviceDiscoveryStatic::checkDeviceType(const QString &device) |
| { |
| int fd = QT_OPEN(device.toLocal8Bit().constData(), O_RDONLY | O_NDELAY, 0); |
| if (Q_UNLIKELY(fd == -1)) { |
| qWarning() << "Device discovery cannot open device" << device; |
| return false; |
| } |
| |
| qCDebug(lcDD) << "doing static device discovery for " << device; |
| |
| if ((m_types & Device_DRM) && device.contains(QLatin1String(QT_DRM_DEVICE_PREFIX))) { |
| QT_CLOSE(fd); |
| return true; |
| } |
| |
| long bitsAbs[LONG_FIELD_SIZE(ABS_CNT)]; |
| long bitsKey[LONG_FIELD_SIZE(KEY_CNT)]; |
| long bitsRel[LONG_FIELD_SIZE(REL_CNT)]; |
| memset(bitsAbs, 0, sizeof(bitsAbs)); |
| memset(bitsKey, 0, sizeof(bitsKey)); |
| memset(bitsRel, 0, sizeof(bitsRel)); |
| |
| ioctl(fd, EVIOCGBIT(EV_ABS, sizeof(bitsAbs)), bitsAbs); |
| ioctl(fd, EVIOCGBIT(EV_KEY, sizeof(bitsKey)), bitsKey); |
| ioctl(fd, EVIOCGBIT(EV_REL, sizeof(bitsRel)), bitsRel); |
| |
| QT_CLOSE(fd); |
| |
| if ((m_types & Device_Keyboard)) { |
| if (testBit(KEY_Q, bitsKey)) { |
| qCDebug(lcDD) << "Found keyboard at" << device; |
| return true; |
| } |
| } |
| |
| if ((m_types & Device_Mouse)) { |
| if (testBit(REL_X, bitsRel) && testBit(REL_Y, bitsRel) && testBit(BTN_MOUSE, bitsKey)) { |
| qCDebug(lcDD) << "Found mouse at" << device; |
| return true; |
| } |
| } |
| |
| if ((m_types & (Device_Touchpad | Device_Touchscreen))) { |
| if (testBit(ABS_X, bitsAbs) && testBit(ABS_Y, bitsAbs)) { |
| if ((m_types & Device_Touchpad) && testBit(BTN_TOOL_FINGER, bitsKey)) { |
| qCDebug(lcDD) << "Found touchpad at" << device; |
| return true; |
| } else if ((m_types & Device_Touchscreen) && testBit(BTN_TOUCH, bitsKey)) { |
| qCDebug(lcDD) << "Found touchscreen at" << device; |
| return true; |
| } else if ((m_types & Device_Tablet) && (testBit(BTN_STYLUS, bitsKey) || testBit(BTN_TOOL_PEN, bitsKey))) { |
| qCDebug(lcDD) << "Found tablet at" << device; |
| return true; |
| } |
| } else if (testBit(ABS_MT_POSITION_X, bitsAbs) && |
| testBit(ABS_MT_POSITION_Y, bitsAbs)) { |
| qCDebug(lcDD) << "Found new-style touchscreen at" << device; |
| return true; |
| } |
| } |
| |
| if ((m_types & Device_Joystick)) { |
| if (testBit(BTN_A, bitsKey) || testBit(BTN_TRIGGER, bitsKey) || testBit(ABS_RX, bitsAbs)) { |
| qCDebug(lcDD) << "Found joystick/gamepad at" << device; |
| return true; |
| } |
| } |
| |
| return false; |
| } |
| |
| QT_END_NAMESPACE |