| /**************************************************************************** |
| ** |
| ** 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. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL$ |
| ** 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 "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" |