diff options
Diffstat (limited to 'src/gui/embedded/qkbdtty_qws.cpp')
| -rw-r--r-- | src/gui/embedded/qkbdtty_qws.cpp | 353 |
1 files changed, 353 insertions, 0 deletions
diff --git a/src/gui/embedded/qkbdtty_qws.cpp b/src/gui/embedded/qkbdtty_qws.cpp new file mode 100644 index 0000000000..c4b7df2d9b --- /dev/null +++ b/src/gui/embedded/qkbdtty_qws.cpp @@ -0,0 +1,353 @@ +/**************************************************************************** +** +** 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. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the Technology Preview License Agreement accompanying +** this package. +** +** GNU Lesser General Public License Usage +** Alternatively, 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. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** +** +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#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 |