/****************************************************************************+
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**+
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).+
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** All rights reserved.+
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** Contact: Nokia Corporation (qt-info@nokia.com)+
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**+
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** This file is part of the QtGui module of the Qt Toolkit.+
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**+
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** $QT_BEGIN_LICENSE:LGPL$+
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** No Commercial Usage+
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** This file contains pre-release code and may not be distributed.+
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** You may use this file in accordance with the terms and conditions+
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** contained in the Technology Preview License Agreement accompanying+
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** this package.+
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**+
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** GNU Lesser General Public License Usage+
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** Alternatively, this file may be used under the terms of the GNU Lesser+
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** General Public License version 2.1 as published by the Free Software+
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** Foundation and appearing in the file LICENSE.LGPL included in the+
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** packaging of this file.  Please review the following information to+
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** ensure the GNU Lesser General Public License version 2.1 requirements+
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.+
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**+
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** In addition, as a special exception, Nokia gives you certain additional+
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** rights.  These rights are described in the Nokia Qt LGPL Exception+
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.+
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**+
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** If you have questions regarding the use of this file, please contact+
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** Nokia at qt-info@nokia.com.+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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**+
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** $QT_END_LICENSE$+
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**+
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****************************************************************************/+
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+
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#ifndef QT_NO_QWS_MOUSE_QVFB+
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+
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#include <stdlib.h>+
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#include <sys/types.h>+
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#include <unistd.h>+
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#include <fcntl.h>+
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#include <errno.h>+
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#include <stdio.h>+
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+
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#include <qvfbhdr.h>+
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#include <qmousevfb_qws.h>+
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#include <qwindowsystem_qws.h>+
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#include <qsocketnotifier.h>+
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#include <qapplication.h>+
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#include <qtimer.h>+
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#include <private/qcore_unix_p.h> // overrides QT_OPEN+
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+
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QT_BEGIN_NAMESPACE+
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+
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QVFbMouseHandler::QVFbMouseHandler(const QString &driver, const QString &device)+
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    : QObject(), QWSMouseHandler(driver, device)+
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{+
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    QString mouseDev = device;+
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    if (device.isEmpty())+
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        mouseDev = QLatin1String("/dev/vmouse");+
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+
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    mouseFD = QT_OPEN(mouseDev.toLatin1().constData(), O_RDWR | O_NDELAY);+
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    if (mouseFD == -1) {+
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        perror("QVFbMouseHandler::QVFbMouseHandler");+
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        qWarning("QVFbMouseHander: Unable to open device %s",+
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                 qPrintable(mouseDev));+
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        return;+
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    }+
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+
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    // Clear pending input+
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    char buf[2];+
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    while (QT_READ(mouseFD, buf, 1) > 0) { }+
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+
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    mouseIdx = 0;+
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+
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    mouseNotifier = new QSocketNotifier(mouseFD, QSocketNotifier::Read, this);+
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    connect(mouseNotifier, SIGNAL(activated(int)),this, SLOT(readMouseData()));+
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}+
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+
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QVFbMouseHandler::~QVFbMouseHandler()+
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{+
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    if (mouseFD >= 0)+
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        QT_CLOSE(mouseFD);+
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}+
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+
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void QVFbMouseHandler::resume()+
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{+
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    mouseNotifier->setEnabled(true);+
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}+
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+
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void QVFbMouseHandler::suspend()+
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{+
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    mouseNotifier->setEnabled(false);+
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}+
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+
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void QVFbMouseHandler::readMouseData()+
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{+
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    int n;+
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    do {+
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        n = QT_READ(mouseFD, mouseBuf+mouseIdx, mouseBufSize-mouseIdx);+
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        if (n > 0)+
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            mouseIdx += n;+
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    } while (n > 0);+
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+
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    int idx = 0;+
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    static const int packetsize = sizeof(QPoint) + 2*sizeof(int);+
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    while (mouseIdx-idx >= packetsize) {+
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        uchar *mb = mouseBuf+idx;+
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        QPoint mousePos = *reinterpret_cast<QPoint *>(mb);+
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        mb += sizeof(QPoint);+
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        int bstate = *reinterpret_cast<int *>(mb);+
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        mb += sizeof(int);+
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        int wheel = *reinterpret_cast<int *>(mb);+
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//        limitToScreen(mousePos);+
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        mouseChanged(mousePos, bstate, wheel);+
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        idx += packetsize;+
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    }+
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+
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    int surplus = mouseIdx - idx;+
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    for (int i = 0; i < surplus; i++)+
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        mouseBuf[i] = mouseBuf[idx+i];+
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    mouseIdx = surplus;+
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}+
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+
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QT_END_NAMESPACE+
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+
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#endif // QT_NO_QWS_MOUSE_QVFB+
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