From 68ea2f7e9bb2d4ea6182101521325dbfd9b74abb Mon Sep 17 00:00:00 2001 From: Romain Pokrzywka Date: Tue, 22 Sep 2015 11:38:09 -0700 Subject: Synchronize QInputDeviceManager touch device count with QTouchDevice This ensures that the values and signals reported by QInputDeviceManager for touch devices always have corresponding entries in the list returned by QTouchDevice::devices(). It also adds proper QTouchDevice unregistration when the underlying input device gets removed by the evdevtouch QPA plugin. Change-Id: I7bdf2f7435c775d15bddce8ba1e731afdc1d948a Reviewed-by: Friedemann Kleint Reviewed-by: Laszlo Agocs --- .../input/evdevtouch/qevdevtouchhandler.cpp | 83 ++++++++++++++++------ 1 file changed, 60 insertions(+), 23 deletions(-) (limited to 'src/platformsupport/input/evdevtouch/qevdevtouchhandler.cpp') diff --git a/src/platformsupport/input/evdevtouch/qevdevtouchhandler.cpp b/src/platformsupport/input/evdevtouch/qevdevtouchhandler.cpp index 5560d910ac..ad348cc083 100644 --- a/src/platformsupport/input/evdevtouch/qevdevtouchhandler.cpp +++ b/src/platformsupport/input/evdevtouch/qevdevtouchhandler.cpp @@ -107,9 +107,8 @@ public: int m_currentSlot; int findClosestContact(const QHash &contacts, int x, int y, int *dist); - void reportPoints(); - void registerDevice(); void addTouchPoint(const Contact &contact, Qt::TouchPointStates *combinedStates); + void reportPoints(); int hw_range_x_min; int hw_range_x_max; @@ -119,7 +118,6 @@ public: int hw_pressure_max; QString hw_name; bool m_forceToActiveWindow; - QTouchDevice *m_device; bool m_typeB; QTransform m_rotate; bool m_singleTouch; @@ -132,23 +130,11 @@ QEvdevTouchScreenData::QEvdevTouchScreenData(QEvdevTouchScreenHandler *q_ptr, co hw_range_x_min(0), hw_range_x_max(0), hw_range_y_min(0), hw_range_y_max(0), hw_pressure_min(0), hw_pressure_max(0), - m_device(0), m_typeB(false), m_singleTouch(false) + m_typeB(false), m_singleTouch(false) { m_forceToActiveWindow = args.contains(QLatin1String("force_window")); } -void QEvdevTouchScreenData::registerDevice() -{ - m_device = new QTouchDevice; - m_device->setName(hw_name); - m_device->setType(QTouchDevice::TouchScreen); - m_device->setCapabilities(QTouchDevice::Position | QTouchDevice::Area); - if (hw_pressure_max > hw_pressure_min) - m_device->setCapabilities(m_device->capabilities() | QTouchDevice::Pressure); - - QWindowSystemInterface::registerTouchDevice(m_device); -} - #define LONG_BITS (sizeof(long) << 3) #define NUM_LONGS(bits) (((bits) + LONG_BITS - 1) / LONG_BITS) @@ -160,9 +146,9 @@ static inline bool testBit(long bit, const long *array) #endif QEvdevTouchScreenHandler::QEvdevTouchScreenHandler(const QString &device, const QString &spec, QObject *parent) - : QObject(parent), m_notify(0), m_fd(-1), d(0) + : QObject(parent), m_notify(Q_NULLPTR), m_fd(-1), d(Q_NULLPTR), m_device(Q_NULLPTR) #if !defined(QT_NO_MTDEV) - , m_mtdev(0) + , m_mtdev(Q_NULLPTR) #endif { setObjectName(QLatin1String("Evdev Touch Handler")); @@ -299,7 +285,7 @@ QEvdevTouchScreenHandler::QEvdevTouchScreenHandler(const QString &device, const if (inverty) d->m_rotate *= QTransform::fromTranslate(0.5, 0.5).scale(1.0, -1.0).translate(-0.5, -0.5); - d->registerDevice(); + registerTouchDevice(); } QEvdevTouchScreenHandler::~QEvdevTouchScreenHandler() @@ -315,6 +301,13 @@ QEvdevTouchScreenHandler::~QEvdevTouchScreenHandler() QT_CLOSE(m_fd); delete d; + + unregisterTouchDevice(); +} + +QTouchDevice *QEvdevTouchScreenHandler::touchDevice() const +{ + return m_device; } void QEvdevTouchScreenHandler::readData() @@ -368,15 +361,44 @@ err: qErrnoWarning(errno, "evdevtouch: Could not read from input device"); if (errno == ENODEV) { // device got disconnected -> stop reading delete m_notify; - m_notify = 0; + m_notify = Q_NULLPTR; + QT_CLOSE(m_fd); m_fd = -1; + + unregisterTouchDevice(); } return; } } } +void QEvdevTouchScreenHandler::registerTouchDevice() +{ + if (m_device) + return; + + m_device = new QTouchDevice; + m_device->setName(d->hw_name); + m_device->setType(QTouchDevice::TouchScreen); + m_device->setCapabilities(QTouchDevice::Position | QTouchDevice::Area); + if (d->hw_pressure_max > d->hw_pressure_min) + m_device->setCapabilities(m_device->capabilities() | QTouchDevice::Pressure); + + QWindowSystemInterface::registerTouchDevice(m_device); +} + +void QEvdevTouchScreenHandler::unregisterTouchDevice() +{ + if (!m_device) + return; + + QWindowSystemInterface::unregisterTouchDevice(m_device); + + delete m_device; + m_device = Q_NULLPTR; +} + void QEvdevTouchScreenData::addTouchPoint(const Contact &contact, Qt::TouchPointStates *combinedStates) { QWindowSystemInterface::TouchPoint tp; @@ -639,12 +661,12 @@ void QEvdevTouchScreenData::reportPoints() tp.pressure = (tp.pressure - hw_pressure_min) / qreal(hw_pressure_max - hw_pressure_min); } - QWindowSystemInterface::handleTouchEvent(0, m_device, m_touchPoints); + QWindowSystemInterface::handleTouchEvent(Q_NULLPTR, q->touchDevice(), m_touchPoints); } QEvdevTouchScreenHandlerThread::QEvdevTouchScreenHandlerThread(const QString &device, const QString &spec, QObject *parent) - : QDaemonThread(parent), m_device(device), m_spec(spec), m_handler(0) + : QDaemonThread(parent), m_device(device), m_spec(spec), m_handler(Q_NULLPTR), m_touchDeviceRegistered(false) { start(); } @@ -658,9 +680,24 @@ QEvdevTouchScreenHandlerThread::~QEvdevTouchScreenHandlerThread() void QEvdevTouchScreenHandlerThread::run() { m_handler = new QEvdevTouchScreenHandler(m_device, m_spec); + // Report the registration to the parent thread by invoking the method asynchronously + QMetaObject::invokeMethod(this, "notifyTouchDeviceRegistered", Qt::QueuedConnection); + exec(); + delete m_handler; - m_handler = 0; + m_handler = Q_NULLPTR; +} + +bool QEvdevTouchScreenHandlerThread::isTouchDeviceRegistered() const +{ + return m_touchDeviceRegistered; +} + +void QEvdevTouchScreenHandlerThread::notifyTouchDeviceRegistered() +{ + m_touchDeviceRegistered = true; + emit touchDeviceRegistered(); } -- cgit v1.2.3