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/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** This file may be used under the terms of the GNU Lesser General Public
** License version 2.1 as published by the Free Software Foundation and
** appearing in the file LICENSE.LGPL included in the packaging of this
** file. Please review the following information to ensure the GNU Lesser
** General Public License version 2.1 requirements will be met:
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU General
** Public License version 3.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of this
** file. Please review the following information to ensure the GNU General
** Public License version 3.0 requirements will be met:
** http://www.gnu.org/copyleft/gpl.html.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#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
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