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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** 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, Digia gives you certain additional
** rights. These rights are described in the Digia 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.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QT_NO_QWS_MOUSE_QVFB
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include <qvfbhdr.h>
#include <qmousevfb_qws.h>
#include <qwindowsystem_qws.h>
#include <qsocketnotifier.h>
#include <qapplication.h>
#include <qtimer.h>
#include <private/qcore_unix_p.h> // overrides QT_OPEN
QT_BEGIN_NAMESPACE
QVFbMouseHandler::QVFbMouseHandler(const QString &driver, const QString &device)
: QObject(), QWSMouseHandler(driver, device)
{
QString mouseDev = device;
if (device.isEmpty())
mouseDev = QLatin1String("/dev/vmouse");
mouseFD = QT_OPEN(mouseDev.toLatin1().constData(), O_RDWR | O_NDELAY);
if (mouseFD == -1) {
perror("QVFbMouseHandler::QVFbMouseHandler");
qWarning("QVFbMouseHander: Unable to open device %s",
qPrintable(mouseDev));
return;
}
// Clear pending input
char buf[2];
while (QT_READ(mouseFD, buf, 1) > 0) { }
mouseIdx = 0;
mouseNotifier = new QSocketNotifier(mouseFD, QSocketNotifier::Read, this);
connect(mouseNotifier, SIGNAL(activated(int)),this, SLOT(readMouseData()));
}
QVFbMouseHandler::~QVFbMouseHandler()
{
if (mouseFD >= 0)
QT_CLOSE(mouseFD);
}
void QVFbMouseHandler::resume()
{
mouseNotifier->setEnabled(true);
}
void QVFbMouseHandler::suspend()
{
mouseNotifier->setEnabled(false);
}
void QVFbMouseHandler::readMouseData()
{
int n;
do {
n = QT_READ(mouseFD, mouseBuf+mouseIdx, mouseBufSize-mouseIdx);
if (n > 0)
mouseIdx += n;
} while (n > 0);
int idx = 0;
static const int packetsize = sizeof(QPoint) + 2*sizeof(int);
while (mouseIdx-idx >= packetsize) {
uchar *mb = mouseBuf+idx;
QPoint mousePos = *reinterpret_cast<QPoint *>(mb);
mb += sizeof(QPoint);
int bstate = *reinterpret_cast<int *>(mb);
mb += sizeof(int);
int wheel = *reinterpret_cast<int *>(mb);
// limitToScreen(mousePos);
mouseChanged(mousePos, bstate, wheel);
idx += packetsize;
}
int surplus = mouseIdx - idx;
for (int i = 0; i < surplus; i++)
mouseBuf[i] = mouseBuf[idx+i];
mouseIdx = surplus;
}
QT_END_NAMESPACE
#endif // QT_NO_QWS_MOUSE_QVFB
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