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** GNU General Public License Usage | |
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****************************************************************************/ | |
#include "qkbdlinuxinput_qws.h" | |
#ifndef QT_NO_QWS_KEYBOARD | |
#include <QSocketNotifier> | |
#include <QStringList> | |
#include <qplatformdefs.h> | |
#include <private/qcore_unix_p.h> // overrides QT_OPEN | |
#include <errno.h> | |
#include <termios.h> | |
#include <linux/kd.h> | |
#include <linux/input.h> | |
QT_BEGIN_NAMESPACE | |
class QWSLinuxInputKbPrivate : public QObject | |
{ | |
Q_OBJECT | |
public: | |
QWSLinuxInputKbPrivate(QWSLinuxInputKeyboardHandler *, const QString &); | |
~QWSLinuxInputKbPrivate(); | |
private: | |
void switchLed(int, bool); | |
private Q_SLOTS: | |
void readKeycode(); | |
private: | |
QWSLinuxInputKeyboardHandler *m_handler; | |
int m_fd; | |
int m_tty_fd; | |
struct termios m_tty_attr; | |
int m_orig_kbmode; | |
}; | |
QWSLinuxInputKeyboardHandler::QWSLinuxInputKeyboardHandler(const QString &device) | |
: QWSKeyboardHandler(device) | |
{ | |
d = new QWSLinuxInputKbPrivate(this, device); | |
} | |
QWSLinuxInputKeyboardHandler::~QWSLinuxInputKeyboardHandler() | |
{ | |
delete d; | |
} | |
bool QWSLinuxInputKeyboardHandler::filterInputEvent(quint16 &, qint32 &) | |
{ | |
return false; | |
} | |
QWSLinuxInputKbPrivate::QWSLinuxInputKbPrivate(QWSLinuxInputKeyboardHandler *h, const QString &device) | |
: m_handler(h), m_fd(-1), m_tty_fd(-1), m_orig_kbmode(K_XLATE) | |
{ | |
setObjectName(QLatin1String("LinuxInputSubsystem Keyboard Handler")); | |
QString dev = QLatin1String("/dev/input/event1"); | |
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_fd = QT_OPEN(dev.toLocal8Bit().constData(), O_RDWR, 0); | |
if (m_fd >= 0) { | |
if (repeat_delay > 0 && repeat_rate > 0) { | |
int kbdrep[2] = { repeat_delay, repeat_rate }; | |
::ioctl(m_fd, EVIOCSREP, kbdrep); | |
} | |
QSocketNotifier *notifier; | |
notifier = new QSocketNotifier(m_fd, QSocketNotifier::Read, this); | |
connect(notifier, SIGNAL(activated(int)), this, SLOT(readKeycode())); | |
// play nice in case we are started from a shell (e.g. for debugging) | |
m_tty_fd = isatty(0) ? 0 : -1; | |
if (m_tty_fd >= 0) { | |
// save tty config for restore. | |
tcgetattr(m_tty_fd, &m_tty_attr); | |
struct ::termios termdata; | |
tcgetattr(m_tty_fd, &termdata); | |
// record the original mode so we can restore it again in the destructor. | |
::ioctl(m_tty_fd, KDGKBMODE, &m_orig_kbmode); | |
// setting this translation mode is even needed in INPUT mode to prevent | |
// the shell from also interpreting codes, if the process has a tty | |
// attached: e.g. Ctrl+C wouldn't copy, but kill the application. | |
::ioctl(m_tty_fd, KDSKBMODE, K_MEDIUMRAW); | |
// 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); | |
} | |
} else { | |
qWarning("Cannot open keyboard input device '%s': %s", qPrintable(dev), strerror(errno)); | |
return; | |
} | |
} | |
QWSLinuxInputKbPrivate::~QWSLinuxInputKbPrivate() | |
{ | |
if (m_tty_fd >= 0) { | |
::ioctl(m_tty_fd, KDSKBMODE, m_orig_kbmode); | |
tcsetattr(m_tty_fd, TCSANOW, &m_tty_attr); | |
} | |
if (m_fd >= 0) | |
QT_CLOSE(m_fd); | |
} | |
void QWSLinuxInputKbPrivate::switchLed(int led, bool state) | |
{ | |
struct ::input_event led_ie; | |
::gettimeofday(&led_ie.time, 0); | |
led_ie.type = EV_LED; | |
led_ie.code = led; | |
led_ie.value = state; | |
QT_WRITE(m_fd, &led_ie, sizeof(led_ie)); | |
} | |
void QWSLinuxInputKbPrivate::readKeycode() | |
{ | |
struct ::input_event buffer[32]; | |
int n = 0; | |
forever { | |
n = QT_READ(m_fd, reinterpret_cast<char *>(buffer) + n, sizeof(buffer) - 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 if (n % sizeof(buffer[0]) == 0) { | |
break; | |
} | |
} | |
n /= sizeof(buffer[0]); | |
for (int i = 0; i < n; ++i) { | |
if (buffer[i].type != EV_KEY) | |
continue; | |
quint16 code = buffer[i].code; | |
qint32 value = buffer[i].value; | |
if (m_handler->filterInputEvent(code, value)) | |
continue; | |
QWSKeyboardHandler::KeycodeAction ka; | |
ka = m_handler->processKeycode(code, value != 0, value == 2); | |
switch (ka) { | |
case QWSKeyboardHandler::CapsLockOn: | |
case QWSKeyboardHandler::CapsLockOff: | |
switchLed(LED_CAPSL, ka == QWSKeyboardHandler::CapsLockOn); | |
break; | |
case QWSKeyboardHandler::NumLockOn: | |
case QWSKeyboardHandler::NumLockOff: | |
switchLed(LED_NUML, ka == QWSKeyboardHandler::NumLockOn); | |
break; | |
case QWSKeyboardHandler::ScrollLockOn: | |
case QWSKeyboardHandler::ScrollLockOff: | |
switchLed(LED_SCROLLL, ka == QWSKeyboardHandler::ScrollLockOn); | |
break; | |
default: | |
// ignore console switching and reboot | |
break; | |
} | |
} | |
} | |
QT_END_NAMESPACE | |
#include "qkbdlinuxinput_qws.moc" | |
#endif // QT_NO_QWS_KEYBOARD |