diff options
Diffstat (limited to 'src/plugins/generic/evdevmouse')
| -rw-r--r-- | src/plugins/generic/evdevmouse/README | 11 | ||||
| -rw-r--r-- | src/plugins/generic/evdevmouse/evdevmouse.pro | 13 | ||||
| -rw-r--r-- | src/plugins/generic/evdevmouse/main.cpp | 77 | ||||
| -rw-r--r-- | src/plugins/generic/evdevmouse/qevdevmouse.cpp | 214 | ||||
| -rw-r--r-- | src/plugins/generic/evdevmouse/qevdevmouse.h | 84 |
5 files changed, 399 insertions, 0 deletions
diff --git a/src/plugins/generic/evdevmouse/README b/src/plugins/generic/evdevmouse/README new file mode 100644 index 0000000000..b89c0a7066 --- /dev/null +++ b/src/plugins/generic/evdevmouse/README @@ -0,0 +1,11 @@ +Generic plug-in for absolute & relative evdev pointer events. + +To use it, launch apps with -plugin EvdevMouse + +The plug-in will try to pick a mouse or touchpad device from udev. +If automatic detection does not work, use -plugin +EvdevMouse:/dev/input/eventN to explicitly set the device node. + +The initial cursor position is assumed to be (0, 0). Relative events +will generate Qt mouse events with screen positions relative to this +initial position. diff --git a/src/plugins/generic/evdevmouse/evdevmouse.pro b/src/plugins/generic/evdevmouse/evdevmouse.pro new file mode 100644 index 0000000000..f25199161b --- /dev/null +++ b/src/plugins/generic/evdevmouse/evdevmouse.pro @@ -0,0 +1,13 @@ +TARGET = qevdevmouseplugin +load(qt_plugin) + +DESTDIR = $$QT.gui.plugins/generic +target.path = $$[QT_INSTALL_PLUGINS]/generic +INSTALLS += target + +HEADERS = qevdevmouse.h + +QT += core-private platformsupport-private + +SOURCES = main.cpp \ + qevdevmouse.cpp diff --git a/src/plugins/generic/evdevmouse/main.cpp b/src/plugins/generic/evdevmouse/main.cpp new file mode 100644 index 0000000000..34ca62f960 --- /dev/null +++ b/src/plugins/generic/evdevmouse/main.cpp @@ -0,0 +1,77 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/ +** +** This file is part of the plugins 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 <qgenericplugin_qpa.h> +#include "qevdevmouse.h" + +QT_BEGIN_NAMESPACE + +class QEvdevMousePlugin : public QGenericPlugin +{ +public: + QEvdevMousePlugin(); + + QStringList keys() const; + QObject* create(const QString &key, const QString &specification); +}; + +QEvdevMousePlugin::QEvdevMousePlugin() + : QGenericPlugin() +{ +} + +QStringList QEvdevMousePlugin::keys() const +{ + return (QStringList() + << QLatin1String("EvdevMouse")); +} + +QObject* QEvdevMousePlugin::create(const QString &key, + const QString &specification) +{ + if (!key.compare(QLatin1String("EvdevMouse"), Qt::CaseInsensitive)) + return new QEvdevMouseHandler(key, specification); + return 0; +} + +Q_EXPORT_PLUGIN2(qevdevmouseplugin, QEvdevMousePlugin) + +QT_END_NAMESPACE diff --git a/src/plugins/generic/evdevmouse/qevdevmouse.cpp b/src/plugins/generic/evdevmouse/qevdevmouse.cpp new file mode 100644 index 0000000000..0b72123c02 --- /dev/null +++ b/src/plugins/generic/evdevmouse/qevdevmouse.cpp @@ -0,0 +1,214 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/ +** +** 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 "qevdevmouse.h" + +#include <QSocketNotifier> +#include <QStringList> +#include <QPoint> +#include <QWindowSystemInterface> + +#include <qplatformdefs.h> +#include <private/qcore_unix_p.h> // overrides QT_OPEN +#include <QtPlatformSupport/private/qudevhelper_p.h> + +#include <errno.h> + +#include <linux/kd.h> +#include <linux/input.h> + +#include <qdebug.h> + +QT_BEGIN_NAMESPACE + +QEvdevMouseHandler::QEvdevMouseHandler(const QString &key, + const QString &specification) + : m_notify(0), m_x(0), m_y(0), m_prevx(0), m_prevy(0), + m_xoffset(0), m_yoffset(0), m_buttons(0) +{ + Q_UNUSED(key); + setObjectName(QLatin1String("Evdev Mouse Handler")); + + QString dev; + q_udev_devicePath(UDev_Mouse | UDev_Touchpad, &dev); + if (dev.isEmpty()) + dev = QLatin1String("/dev/input/event0"); + + m_compression = true; + m_smooth = false; + int jitterLimit = 0; + + QStringList args = specification.split(QLatin1Char(':')); + foreach (const QString &arg, args) { + if (arg == "nocompress") + m_compression = false; + else if (arg.startsWith("dejitter=")) + jitterLimit = arg.mid(9).toInt(); + else if (arg.startsWith("xoffset=")) + m_xoffset = arg.mid(8).toInt(); + else if (arg.startsWith("yoffset=")) + m_yoffset = arg.mid(8).toInt(); + else if (arg.startsWith(QLatin1String("/dev/"))) + dev = arg; + } + m_jitterLimitSquared = jitterLimit*jitterLimit; + + qDebug("evdevmouse: Using device %s", qPrintable(dev)); + 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; + } +} + +QEvdevMouseHandler::~QEvdevMouseHandler() +{ + if (m_fd >= 0) + QT_CLOSE(m_fd); +} + +void QEvdevMouseHandler::sendMouseEvent() +{ + QPoint pos(m_x + m_xoffset, m_y + m_yoffset); + //qDebug("mouse event %d %d %d", pos.x(), pos.y(), int(m_buttons)); + QWindowSystemInterface::handleMouseEvent(0, pos, pos, m_buttons); + m_prevx = m_x; + m_prevy = m_y; +} + +void QEvdevMouseHandler::readMouseData() +{ + struct ::input_event buffer[32]; + int n = 0; + bool posChanged = false; + bool pendingMouseEvent = false; + int eventCompressCount = 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) { + struct ::input_event *data = &buffer[i]; + //qDebug() << ">>" << hex << data->type << data->code << dec << data->value; + 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 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 if (data->type == EV_KEY && data->code == BTN_TOUCH) { + m_buttons = data->value ? Qt::LeftButton : Qt::NoButton; + + sendMouseEvent(); + pendingMouseEvent = false; + } else if (data->type == EV_KEY && data->code >= BTN_LEFT && data->code <= BTN_MIDDLE) { + 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; + sendMouseEvent(); + pendingMouseEvent = false; + } else if (data->type == EV_SYN && data->code == SYN_REPORT) { + if (posChanged) { + posChanged = false; + if (m_compression) { + pendingMouseEvent = true; + eventCompressCount++; + } else { + sendMouseEvent(); + } + } + } else if (data->type == EV_MSC && data->code == MSC_SCAN) { + // kernel encountered an unmapped key - just ignore it + continue; + } + } + if (m_compression && pendingMouseEvent) { + int distanceSquared = (m_x - m_prevx)*(m_x - m_prevx) + (m_y - m_prevy)*(m_y - m_prevy); + if (distanceSquared > m_jitterLimitSquared) + sendMouseEvent(); + } +} + +QT_END_NAMESPACE diff --git a/src/plugins/generic/evdevmouse/qevdevmouse.h b/src/plugins/generic/evdevmouse/qevdevmouse.h new file mode 100644 index 0000000000..9542d133f2 --- /dev/null +++ b/src/plugins/generic/evdevmouse/qevdevmouse.h @@ -0,0 +1,84 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/ +** +** 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. +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QEVDEVMOUSE_H +#define QEVDEVMOUSE_H + +#include <QObject> +#include <QString> + +QT_BEGIN_HEADER + +QT_BEGIN_NAMESPACE + +class QSocketNotifier; + +class QEvdevMouseHandler : public QObject +{ + Q_OBJECT +public: + QEvdevMouseHandler(const QString &key, const QString &specification); + ~QEvdevMouseHandler(); + +private slots: + void readMouseData(); + +private: + void sendMouseEvent(); + void pathFromUdev(QString *path); + + QSocketNotifier *m_notify; + int m_fd; + int m_x, m_y; + int m_prevx, m_prevy; + int m_xoffset, m_yoffset; + int m_smoothx, m_smoothy; + Qt::MouseButtons m_buttons; + bool m_compression; + bool m_smooth; + int m_jitterLimitSquared; +}; + +QT_END_NAMESPACE + +QT_END_HEADER + +#endif // QEVDEVMOUSE_H |