blob: ca97b0a12ef01583a3faea0f028b5c2346e08913 [file] [log] [blame]
/****************************************************************************
**
** 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 "qkbdtty_qws.h"
#if !defined(QT_NO_QWS_KEYBOARD) && !defined(QT_NO_QWS_KBD_TTY)
#include <QSocketNotifier>
#include <QStringList>
#include <qplatformdefs.h>
#include <private/qcore_unix_p.h> // overrides QT_OPEN
#include <errno.h>
#include <termios.h>
#if defined Q_OS_LINUX
# include <linux/kd.h>
# include <linux/vt.h> //TODO: move vt handling somewhere else (QLinuxFbScreen?)
# include "qscreen_qws.h"
# include "qwindowsystem_qws.h"
# include "qapplication.h"
# include "private/qwindowsurface_qws_p.h"
# include "private/qwssignalhandler_p.h"
# define VTACQSIG SIGUSR1
# define VTRELSIG SIGUSR2
#endif
QT_BEGIN_NAMESPACE
class QWSTtyKbPrivate : public QObject
{
Q_OBJECT
public:
QWSTtyKbPrivate(QWSTtyKeyboardHandler *handler, const QString &device);
~QWSTtyKbPrivate();
private:
void switchLed(char, bool);
void switchConsole(int vt);
private Q_SLOTS:
void readKeycode();
void handleConsoleSwitch(int sig);
private:
QWSTtyKeyboardHandler *m_handler;
int m_tty_fd;
struct termios m_tty_attr;
char m_last_keycode;
int m_vt_qws;
int m_orig_kbmode;
};
QWSTtyKeyboardHandler::QWSTtyKeyboardHandler(const QString &device)
: QWSKeyboardHandler(device)
{
d = new QWSTtyKbPrivate(this, device);
}
QWSTtyKeyboardHandler::~QWSTtyKeyboardHandler()
{
delete d;
}
bool QWSTtyKeyboardHandler::filterKeycode(char &)
{
return false;
}
QWSTtyKbPrivate::QWSTtyKbPrivate(QWSTtyKeyboardHandler *h, const QString &device)
: 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()
{
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);
}
}
void QWSTtyKbPrivate::switchLed(char led, bool state)
{
#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
}
void QWSTtyKbPrivate::readKeycode()
{
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;
}
}
}
void QWSTtyKbPrivate::switchConsole(int vt)
{
#if defined(Q_OS_LINUX)
if (m_vt_qws && vt && (m_tty_fd >= 0 ))
::ioctl(m_tty_fd, VT_ACTIVATE, vt);
#endif
}
void QWSTtyKbPrivate::handleConsoleSwitch(int sig)
{
#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
}
QT_END_NAMESPACE
#include "qkbdtty_qws.moc"
#endif // QT_NO_QWS_KEYBOARD || QT_NO_QWS_KBD_TTY