diff options
Diffstat (limited to 'src/gui/embedded/qmouselinuxinput_qws.cpp')
| -rw-r--r-- | src/gui/embedded/qmouselinuxinput_qws.cpp | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/src/gui/embedded/qmouselinuxinput_qws.cpp b/src/gui/embedded/qmouselinuxinput_qws.cpp new file mode 100644 index 0000000000..534e9f16f7 --- /dev/null +++ b/src/gui/embedded/qmouselinuxinput_qws.cpp @@ -0,0 +1,205 @@ +/**************************************************************************** +** +** 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 plugins 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 "qmouselinuxinput_qws.h" + +#include <QScreen> +#include <QSocketNotifier> + +#include <qplatformdefs.h> +#include <private/qcore_unix_p.h> // overrides QT_OPEN + +#include <errno.h> + +#include <linux/input.h> + +QT_BEGIN_NAMESPACE + + +class QWSLinuxInputMousePrivate : public QObject +{ + Q_OBJECT +public: + QWSLinuxInputMousePrivate(QWSLinuxInputMouseHandler *, const QString &); + ~QWSLinuxInputMousePrivate(); + + void enable(bool on); + +private Q_SLOTS: + void readMouseData(); + +private: + QWSLinuxInputMouseHandler *m_handler; + QSocketNotifier * m_notify; + int m_fd; + int m_x, m_y; + int m_buttons; +}; + +QWSLinuxInputMouseHandler::QWSLinuxInputMouseHandler(const QString &device) + : QWSCalibratedMouseHandler(device) +{ + d = new QWSLinuxInputMousePrivate(this, device); +} + +QWSLinuxInputMouseHandler::~QWSLinuxInputMouseHandler() +{ + delete d; +} + +void QWSLinuxInputMouseHandler::suspend() +{ + d->enable(false); +} + +void QWSLinuxInputMouseHandler::resume() +{ + d->enable(true); +} + +QWSLinuxInputMousePrivate::QWSLinuxInputMousePrivate(QWSLinuxInputMouseHandler *h, const QString &device) + : m_handler(h), m_notify(0), m_x(0), m_y(0), m_buttons(0) +{ + setObjectName(QLatin1String("LinuxInputSubsystem Mouse Handler")); + + QString dev = QLatin1String("/dev/input/event0"); + if (device.startsWith(QLatin1String("/dev/"))) + dev = device; + + 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; + } +} + +QWSLinuxInputMousePrivate::~QWSLinuxInputMousePrivate() +{ + if (m_fd >= 0) + QT_CLOSE(m_fd); +} + +void QWSLinuxInputMousePrivate::enable(bool on) +{ + if (m_notify) + m_notify->setEnabled(on); +} + +void QWSLinuxInputMousePrivate::readMouseData() +{ + if (!qt_screen) + return; + + 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) { + struct ::input_event *data = &buffer[i]; + + bool unknown = false; + if (data->type == EV_ABS) { + if (data->code == ABS_X) { + m_x = data->value; + } else if (data->code == ABS_Y) { + m_y = data->value; + } else { + unknown = true; + } + } else if (data->type == EV_REL) { + if (data->code == REL_X) { + m_x += data->value; + } else if (data->code == REL_Y) { + m_y += data->value; + } else { + unknown = true; + } + } else if (data->type == EV_KEY && data->code == BTN_TOUCH) { + m_buttons = data->value ? Qt::LeftButton : 0; + } else if (data->type == EV_KEY) { + int button = 0; + 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; + } else if (data->type == EV_SYN && data->code == SYN_REPORT) { + QPoint pos(m_x, m_y); + 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); + } + } +} + +QT_END_NAMESPACE + +#include "qmouselinuxinput_qws.moc" |