diff options
Diffstat (limited to 'src/plugins/generic/linuxinput/qlinuxinput.cpp')
| -rw-r--r-- | src/plugins/generic/linuxinput/qlinuxinput.cpp | 385 |
1 files changed, 385 insertions, 0 deletions
diff --git a/src/plugins/generic/linuxinput/qlinuxinput.cpp b/src/plugins/generic/linuxinput/qlinuxinput.cpp new file mode 100644 index 0000000..32137ee --- /dev/null +++ b/src/plugins/generic/linuxinput/qlinuxinput.cpp @@ -0,0 +1,385 @@ +/**************************************************************************** +** +** Copyright (C) 2009 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 "qlinuxinput.h" + + +#include <QSocketNotifier> +#include <QStringList> +#include <QPoint> +#include <QWindowSystemInterface> + +#include <qkbd_qws.h> + + +#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> + +#include <qdebug.h> + +QT_BEGIN_NAMESPACE + +QLinuxInputMouseHandler::QLinuxInputMouseHandler(const QString &key, + const QString &specification) + : m_notify(0), m_x(0), m_y(0), m_buttons(0) +{ + qDebug() << "QLinuxInputMouseHandler" << key << specification; + + + setObjectName(QLatin1String("LinuxInputSubsystem Mouse Handler")); + + QString dev = QLatin1String("/dev/input/event0"); + if (specification.startsWith(QLatin1String("/dev/"))) + dev = specification; + + m_fd = QT_OPEN(dev.toLocal8Bit().constData(), O_RDONLY | O_NDELAY, 0); + if (m_fd >= 0) { + m_notify = new QSocketNotifier(m_fd, QSocketNotifier::Read, this); + connect(m_notify, SIGNAL(activated(int)), this, SLOT(readMouseData())); + } else { + qWarning("Cannot open mouse input device '%s': %s", qPrintable(dev), strerror(errno)); + return; + } + +} + + +QLinuxInputMouseHandler::~QLinuxInputMouseHandler() +{ + if (m_fd >= 0) + QT_CLOSE(m_fd); +} + +void QLinuxInputMouseHandler::readMouseData() +{ + struct ::input_event buffer[32]; + int n = 0; + bool posChanged = false; + + 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) { + struct ::input_event *data = &buffer[i]; + + bool unknown = false; + if (data->type == EV_ABS) { + if (data->code == ABS_X && m_x != data->value) { + m_x = data->value; + posChanged = true; + } else if (data->code == ABS_Y && m_y != data->value) { + m_y = data->value; + posChanged = true; + } else { + unknown = true; + } + } else if (data->type == EV_REL) { + if (data->code == REL_X) { + m_x += data->value; + posChanged = true; + } else if (data->code == REL_Y) { + m_y += data->value; + posChanged = true; + } else if (data->code == ABS_WHEEL) { // vertical scroll + // data->value: 1 == up, -1 == down + int delta = 120 * data->value; + QWindowSystemInterface::handleWheelEvent(0, QPoint(m_x, m_y), + QPoint(m_x, m_y), + delta, Qt::Vertical); + } else if (data->code == ABS_THROTTLE) { // horizontal scroll + // data->value: 1 == right, -1 == left + int delta = 120 * -data->value; + QWindowSystemInterface::handleWheelEvent(0, QPoint(m_x, m_y), + QPoint(m_x, m_y), + delta, Qt::Horizontal); + } else { + unknown = true; + } + } else if (data->type == EV_KEY && data->code == BTN_TOUCH) { + m_buttons = data->value ? Qt::LeftButton : Qt::NoButton; + } else if (data->type == EV_KEY) { + Qt::MouseButton button = Qt::NoButton; + switch (data->code) { + case BTN_LEFT: button = Qt::LeftButton; break; + case BTN_MIDDLE: button = Qt::MidButton; break; + case BTN_RIGHT: button = Qt::RightButton; break; + } + if (data->value) + m_buttons |= button; + else + m_buttons &= ~button; + + QWindowSystemInterface::handleMouseEvent(0, QPoint(m_x, m_y), + QPoint(m_x, m_y), m_buttons); + } else if (data->type == EV_SYN && data->code == SYN_REPORT) { + if (!posChanged) + continue; + posChanged = false; + QPoint pos(m_x, m_y); + + QWindowSystemInterface::handleMouseEvent(0, pos, pos, m_buttons); + + // pos = m_handler->transform(pos); + //m_handler->limitToScreen(pos); + //m_handler->mouseChanged(pos, m_buttons); + + } else if (data->type == EV_MSC && data->code == MSC_SCAN) { + // kernel encountered an unmapped key - just ignore it + continue; + } else { + unknown = true; + } + if (unknown) { + qWarning("unknown mouse event type=%x, code=%x, value=%x", data->type, data->code, data->value); + } + } +} + + + + +//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ +//Keyboard handler + + + + +class QWSLinuxInputKeyboardHandler : public QWSKeyboardHandler +{ +public: + QWSLinuxInputKeyboardHandler(const QString&); + ~QWSLinuxInputKeyboardHandler(); + + virtual bool filterInputEvent(quint16 &input_code, qint32 &input_value); + +//private: +// QWSLinuxInputKbPrivate *d; +}; + + +QWSLinuxInputKeyboardHandler::QWSLinuxInputKeyboardHandler(const QString &device) + : QWSKeyboardHandler(device) +{ +} + +QWSLinuxInputKeyboardHandler::~QWSLinuxInputKeyboardHandler() +{ +} + +bool QWSLinuxInputKeyboardHandler::filterInputEvent(quint16 &, qint32 &) +{ + return false; +} + + +QLinuxInputKeyboardHandler::QLinuxInputKeyboardHandler(const QString &key, const QString &specification) + : m_handler(0), 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 = specification.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_handler = new QWSLinuxInputKeyboardHandler(dev); //This is a hack to avoid copying all the QWS code + + 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 tranlation 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; + } +} + +QLinuxInputKeyboardHandler::~QLinuxInputKeyboardHandler() +{ + 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); + delete m_handler; +} + +void QLinuxInputKeyboardHandler::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 QLinuxInputKeyboardHandler::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 |