QWSTtyKbPrivate Class Reference

Inheritance diagram for QWSTtyKbPrivate:

Public Functions
	QWSTtyKbPrivate (QWSTtyKeyboardHandler *handler, const QString &device)
	~QWSTtyKbPrivate ()
Public Functions inherited from QObject
bool	blockSignals (bool b)
	If block is true, signals emitted by this object are blocked (i.e., emitting a signal will not invoke anything connected to it). More...
const QObjectList &	children () const
	Returns a list of child objects. More...
bool	connect (const QObject *sender, const char *signal, const char *member, Qt::ConnectionType type=Qt::AutoConnection) const
bool	disconnect (const char *signal=0, const QObject *receiver=0, const char *member=0)
bool	disconnect (const QObject *receiver, const char *member=0)
void	dumpObjectInfo ()
	Dumps information about signal connections, etc. More...
void	dumpObjectTree ()
	Dumps a tree of children to the debug output. More...
QList< QByteArray >	dynamicPropertyNames () const
	Returns the names of all properties that were dynamically added to the object using setProperty(). More...
virtual bool	event (QEvent *)
	This virtual function receives events to an object and should return true if the event e was recognized and processed. More...
virtual bool	eventFilter (QObject *, QEvent *)
	Filters events if this object has been installed as an event filter for the watched object. More...
template<typename T >
T	findChild (const QString &aName=QString()) const
	Returns the child of this object that can be cast into type T and that is called name, or 0 if there is no such object. More...
template<typename T >
QList< T >	findChildren (const QString &aName=QString()) const
	Returns all children of this object with the given name that can be cast to type T, or an empty list if there are no such objects. More...
template<typename T >
QList< T >	findChildren (const QRegExp &re) const
bool	inherits (const char *classname) const
	Returns true if this object is an instance of a class that inherits className or a QObject subclass that inherits className; otherwise returns false. More...
void	installEventFilter (QObject *)
	Installs an event filter filterObj on this object. More...
bool	isWidgetType () const
	Returns true if the object is a widget; otherwise returns false. More...
void	killTimer (int id)
	Kills the timer with timer identifier, id. More...
virtual const QMetaObject *	metaObject () const
	Returns a pointer to the meta-object of this object. More...
void	moveToThread (QThread *thread)
	Changes the thread affinity for this object and its children. More...
QString	objectName () const
QObject *	parent () const
	Returns a pointer to the parent object. More...
QVariant	property (const char *name) const
	Returns the value of the object's name property. More...
Q_INVOKABLE	QObject (QObject *parent=0)
	Constructs an object with parent object parent. More...
void	removeEventFilter (QObject *)
	Removes an event filter object obj from this object. More...
void	setObjectName (const QString &name)
void	setParent (QObject *)
	Makes the object a child of parent. More...
bool	setProperty (const char *name, const QVariant &value)
	Sets the value of the object's name property to value. More...
void	setUserData (uint id, QObjectUserData *data)
bool	signalsBlocked () const
	Returns true if signals are blocked; otherwise returns false. More...
int	startTimer (int interval)
	Starts a timer and returns a timer identifier, or returns zero if it could not start a timer. More...
QThread *	thread () const
	Returns the thread in which the object lives. More...
QObjectUserData *	userData (uint id) const
virtual	~QObject ()
	Destroys the object, deleting all its child objects. More...

Private Slots
void	handleConsoleSwitch (int sig)
void	readKeycode ()

Private Functions
void	switchConsole (int vt)
void	switchLed (char, bool)

Properties
QWSTtyKeyboardHandler *	m_handler
char	m_last_keycode
int	m_orig_kbmode
struct termios	m_tty_attr
int	m_tty_fd
int	m_vt_qws

Additional Inherited Members
Public Slots inherited from QObject
void	deleteLater ()
	Schedules this object for deletion. More...
Signals inherited from QObject
void	destroyed (QObject *=0)
	This signal is emitted immediately before the object obj is destroyed, and can not be blocked. More...
Static Public Functions inherited from QObject
static bool	connect (const QObject *sender, const char *signal, const QObject *receiver, const char *member, Qt::ConnectionType=Qt::AutoConnection)
	Creates a connection of the given type from the signal in the sender object to the method in the receiver object. More...
static bool	connect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &method, Qt::ConnectionType type=Qt::AutoConnection)
static bool	disconnect (const QObject *sender, const char *signal, const QObject *receiver, const char *member)
	Disconnects signal in object sender from method in object receiver. More...
static bool	disconnect (const QObject *sender, const QMetaMethod &signal, const QObject *receiver, const QMetaMethod &member)
static uint	registerUserData ()
static QString	tr (const char *sourceText, const char *comment=0, int n=-1)
static QString	trUtf8 (const char *sourceText, const char *comment=0, int n=-1)
Static Public Variables inherited from QObject
static const QMetaObject	staticMetaObject
	This variable stores the meta-object for the class. More...
Protected Functions inherited from QObject
virtual void	childEvent (QChildEvent *)
	This event handler can be reimplemented in a subclass to receive child events. More...
virtual void	connectNotify (const char *signal)
	This virtual function is called when something has been connected to signal in this object. More...
virtual void	customEvent (QEvent *)
	This event handler can be reimplemented in a subclass to receive custom events. More...
virtual void	disconnectNotify (const char *signal)
	This virtual function is called when something has been disconnected from signal in this object. More...
	QObject (QObjectPrivate &dd, QObject *parent=0)
int	receivers (const char *signal) const
	Returns the number of receivers connected to the signal. More...
QObject *	sender () const
	Returns a pointer to the object that sent the signal, if called in a slot activated by a signal; otherwise it returns 0. More...
int	senderSignalIndex () const
virtual void	timerEvent (QTimerEvent *)
	This event handler can be reimplemented in a subclass to receive timer events for the object. More...
Protected Variables inherited from QObject
QScopedPointer< QObjectData >	d_ptr
Static Protected Variables inherited from QObject
static const QMetaObject	staticQtMetaObject
Related Functions inherited from QObject
T	qFindChildqFindChildren (const QObject *obj, const QString &name)()
QList< T >	qFindChildrenqFindChildren (const QObject *obj, const QString &name)()
QList< T >	qFindChildrenqFindChildren (const QObject *obj, const QRegExp &regExp)()
T *	qobject_cast (QObject *object)
	QObjectList
void *	qt_find_obj_child (QObject *parent, const char *type, const QString &name)
	Returns a pointer to the object named name that inherits type and with a given parent. More...

Detailed Description

Definition at line 72 of file qkbdtty_qws.cpp.

Constructors and Destructors

QWSTtyKbPrivate()

QWSTtyKbPrivate::QWSTtyKbPrivate	(	QWSTtyKeyboardHandler *	handler,
		const QString &	device
	)

Definition at line 113 of file qkbdtty_qws.cpp.

    : m_handler(h), m_tty_fd(-1), m_last_keycode(0), m_vt_qws(0), m_orig_kbmode(K_XLATE)
{
    setObjectName(QLatin1String("TTY Keyboard Handler"));
#ifndef QT_NO_QWS_SIGNALHANDLER
    QWSSignalHandler::instance()->addObject(this);
#endif

    QString dev = QLatin1String("/dev/tty0");
    int repeat_delay = -1;
    int repeat_rate = -1;

    QStringList args = device.split(QLatin1Char(':'));
    foreach (const QString &arg, args) {
        if (arg.startsWith(QLatin1String("repeat-delay=")))
            repeat_delay = arg.mid(13).toInt();
        else if (arg.startsWith(QLatin1String("repeat-rate=")))
            repeat_rate = arg.mid(12).toInt();
        else if (arg.startsWith(QLatin1String("/dev/")))
            dev = arg;
    }

    m_tty_fd = QT_OPEN(dev.toLocal8Bit().constData(), O_RDWR, 0);
    if (m_tty_fd >= 0) {
        if (repeat_delay > 0 && repeat_rate > 0) {
#if defined(Q_OS_LINUX)
            struct ::kbd_repeat kbdrep = { repeat_delay, repeat_rate };
            ::ioctl(m_tty_fd, KDKBDREP, &kbdrep);
#endif
        }

        QSocketNotifier *notifier;
        notifier = new QSocketNotifier(m_tty_fd, QSocketNotifier::Read, this);
        connect(notifier, SIGNAL(activated(int)), this, SLOT(readKeycode()));

        // save tty config for restore.
        tcgetattr(m_tty_fd, &m_tty_attr);

        struct ::termios termdata;
        tcgetattr(m_tty_fd, &termdata);

#if defined(Q_OS_LINUX)
        // record the original mode so we can restore it again in the destructor.
        ::ioctl(m_tty_fd, KDGKBMODE, &m_orig_kbmode);

        // PLEASE NOTE:
        // the tty keycode interface can only report keycodes 0x01 .. 0x7f
        // KEY_MAX is however defined to 0x1ff. In practice this is sufficient
        // for a PC style keyboard though.
        // we don't support K_RAW anymore - if you need that, you have to add
        // a scan- to keycode converter yourself.
        ::ioctl(m_tty_fd, KDSKBMODE, K_MEDIUMRAW);
#endif

        // set the tty layer to pass-through
        termdata.c_iflag = (IGNPAR | IGNBRK) & (~PARMRK) & (~ISTRIP);
        termdata.c_oflag = 0;
        termdata.c_cflag = CREAD | CS8;
        termdata.c_lflag = 0;
        termdata.c_cc[VTIME]=0;
        termdata.c_cc[VMIN]=1;
        cfsetispeed(&termdata, 9600);
        cfsetospeed(&termdata, 9600);
        tcsetattr(m_tty_fd, TCSANOW, &termdata);

#if defined(Q_OS_LINUX)
        // VT switching is handled via unix signals
        connect(QApplication::instance(), SIGNAL(unixSignal(int)), this, SLOT(handleConsoleSwitch(int)));
        QApplication::instance()->watchUnixSignal(VTACQSIG, true);
        QApplication::instance()->watchUnixSignal(VTRELSIG, true);

        struct ::vt_mode vtMode;
        if (::ioctl(m_tty_fd, VT_GETMODE, &vtMode) == 0) {
            vtMode.mode = VT_PROCESS;
            vtMode.relsig = VTRELSIG;
            vtMode.acqsig = VTACQSIG;

            if (::ioctl(m_tty_fd, VT_SETMODE, &vtMode) == 0) {
                struct ::vt_stat vtStat;
                ::memset(&vtStat, 0, sizeof(vtStat));

                if (::ioctl(m_tty_fd, VT_GETSTATE, &vtStat) == 0 ) {
                    m_vt_qws = vtStat.v_active;
                }
            }
        }

        if (!m_vt_qws)
            qWarning("Could not initialize virtual console switching");
#endif
    } else {
        qWarning("Cannot open input device '%s': %s", qPrintable(dev), strerror(errno));
        return;
    }

}

~QWSTtyKbPrivate()

QWSTtyKbPrivate::~QWSTtyKbPrivate

(

)

Definition at line 210 of file qkbdtty_qws.cpp.

{
    if (m_tty_fd >= 0) {
#if defined(Q_OS_LINUX)
        ::ioctl(m_tty_fd, KDSKBMODE, m_orig_kbmode);
#endif
        tcsetattr(m_tty_fd, TCSANOW, &m_tty_attr);
        QT_CLOSE(m_tty_fd);
    }
}

Functions

handleConsoleSwitch

void QWSTtyKbPrivate::handleConsoleSwitch ( int  sig )

privateslot

Definition at line 308 of file qkbdtty_qws.cpp.

Referenced by QWSTtyKbPrivate().

{
#if defined(Q_OS_LINUX)
    // received a notification from the kernel that the current VT is
    // changing: either enable or disable QWS painting accordingly.

    if (sig == VTACQSIG) {
        if (::ioctl(m_tty_fd, VT_RELDISP, VT_ACKACQ) == 0) {
            qwsServer->enablePainting(true);
            qt_screen->restore();
            qwsServer->resumeMouse();
            qwsServer->refresh();
        }
    } else if (sig == VTRELSIG) {
        qwsServer->enablePainting(false);

        // Check for reserved surfaces which might still do painting
        bool allWindowsHidden = true;
        const QList<QWSWindow*> windows = QWSServer::instance()->clientWindows();
        for (int i = 0; i < windows.size(); ++i) {
            const QWSWindow *w = windows.at(i);
            QWSWindowSurface *s = w->windowSurface();
            if (s && s->isRegionReserved() && !w->allocatedRegion().isEmpty()) {
                allWindowsHidden = false;
                break;
            }
        }

        if (!allWindowsHidden) {
            ::ioctl(m_tty_fd, VT_RELDISP, 0); // abort console switch
            qwsServer->enablePainting(true);
        } else if (::ioctl(m_tty_fd, VT_RELDISP, 1) == 0) {
            qt_screen->save();
            qwsServer->suspendMouse();
        } else {
            qwsServer->enablePainting(true);
        }
    }
#endif
}

readKeycode

void QWSTtyKbPrivate::readKeycode ( )

privateslot

Definition at line 237 of file qkbdtty_qws.cpp.

Referenced by QWSTtyKbPrivate().

{
    char buffer[32];
    int n = 0;

    forever {
        n = QT_READ(m_tty_fd, buffer + n, 32 - n);

        if (n == 0) {
            qWarning("Got EOF from the input device.");
            return;
        } else if (n < 0 && (errno != EINTR && errno != EAGAIN)) {
            qWarning("Could not read from input device: %s", strerror(errno));
            return;
        } else {
            break;
        }
    }

    for (int i = 0; i < n; ++i) {
        if (m_handler->filterKeycode(buffer[i]))
            continue;

        QWSKeyboardHandler::KeycodeAction ka;
        ka = m_handler->processKeycode(buffer[i] & 0x7f, (buffer[i] & 0x80) == 0x00, buffer[i] == m_last_keycode);
        m_last_keycode = buffer[i];

        switch (ka) {
        case QWSKeyboardHandler::CapsLockOn:
        case QWSKeyboardHandler::CapsLockOff:
            switchLed(LED_CAP, ka == QWSKeyboardHandler::CapsLockOn);
            break;

        case QWSKeyboardHandler::NumLockOn:
        case QWSKeyboardHandler::NumLockOff:
            switchLed(LED_NUM, ka == QWSKeyboardHandler::NumLockOn);
            break;

        case QWSKeyboardHandler::ScrollLockOn:
        case QWSKeyboardHandler::ScrollLockOff:
            switchLed(LED_SCR, ka == QWSKeyboardHandler::ScrollLockOn);
            break;

        case QWSKeyboardHandler::PreviousConsole:
            switchConsole(qBound(1, m_vt_qws - 1, 10));
            break;

        case QWSKeyboardHandler::NextConsole:
            switchConsole(qBound(1, m_vt_qws + 1, 10));
            break;

        default:
            if (ka >= QWSKeyboardHandler::SwitchConsoleFirst &&
                ka <= QWSKeyboardHandler::SwitchConsoleLast) {
                switchConsole(1 + (ka & QWSKeyboardHandler::SwitchConsoleMask));
            }
            //ignore reboot
            break;
        }
    }
}

switchConsole()

void QWSTtyKbPrivate::switchConsole ( int  vt )

private

Definition at line 300 of file qkbdtty_qws.cpp.

Referenced by readKeycode().

{
#if defined(Q_OS_LINUX)
    if (m_vt_qws && vt && (m_tty_fd >= 0 ))
        ::ioctl(m_tty_fd, VT_ACTIVATE, vt);
#endif
}

switchLed()

void QWSTtyKbPrivate::switchLed ( char  led, bool  state  )

private

Definition at line 223 of file qkbdtty_qws.cpp.

Referenced by readKeycode().

{
#if defined(Q_OS_LINUX)
    char ledstate;

    ::ioctl(m_tty_fd, KDGETLED, &ledstate);
    if (state)
        ledstate |= led;
    else
        ledstate &= ~led;
    ::ioctl(m_tty_fd, KDSETLED, ledstate);
#endif
}

Properties

m_handler

QWSTtyKeyboardHandler* QWSTtyKbPrivate::m_handler

private

Definition at line 88 of file qkbdtty_qws.cpp.

Referenced by readKeycode().

m_last_keycode

char QWSTtyKbPrivate::m_last_keycode

private

Definition at line 91 of file qkbdtty_qws.cpp.

Referenced by readKeycode().

m_orig_kbmode

int QWSTtyKbPrivate::m_orig_kbmode

private

Definition at line 93 of file qkbdtty_qws.cpp.

Referenced by QWSTtyKbPrivate(), and ~QWSTtyKbPrivate().

m_tty_attr

struct termios QWSTtyKbPrivate::m_tty_attr

private

Definition at line 90 of file qkbdtty_qws.cpp.

Referenced by QWSTtyKbPrivate(), and ~QWSTtyKbPrivate().

m_tty_fd

int QWSTtyKbPrivate::m_tty_fd

private

Definition at line 89 of file qkbdtty_qws.cpp.

Referenced by handleConsoleSwitch(), QWSTtyKbPrivate(), readKeycode(), switchConsole(), switchLed(), and ~QWSTtyKbPrivate().

m_vt_qws

int QWSTtyKbPrivate::m_vt_qws

private

Definition at line 92 of file qkbdtty_qws.cpp.

Referenced by QWSTtyKbPrivate(), readKeycode(), and switchConsole().

---

The documentation for this class was generated from the following file:

• /src/gui/embedded/qkbdtty_qws.cpp