/****************************************************************************+
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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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#include <stdlib.h>+
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#include <sys/types.h>+
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#include <sys/stat.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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+
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#include <qvfbhdr.h>+
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#include <qkbdvfb_qws.h>+
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+
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#ifndef QT_NO_QWS_KEYBOARD+
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#ifndef QT_NO_QWS_KBD_QVFB+
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+
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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 <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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QVFbKeyboardHandler::QVFbKeyboardHandler(const QString &device)+
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    : QObject()+
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{+
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    terminalName = device;+
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    if (terminalName.isEmpty())+
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        terminalName = QLatin1String("/dev/vkdb");+
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    kbdFD = -1;+
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    kbdIdx = 0;+
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    kbdBufferLen = sizeof(QVFbKeyData) * 5;+
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    kbdBuffer = new unsigned char [kbdBufferLen];+
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+
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    if ((kbdFD = QT_OPEN(terminalName.toLatin1().constData(), O_RDONLY | O_NDELAY)) < 0) {+
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        qWarning("Cannot open %s (%s)", terminalName.toLatin1().constData(),+
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        strerror(errno));+
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    } else {+
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        // Clear pending input+
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        char buf[2];+
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        while (QT_READ(kbdFD, buf, 1) > 0) { }+
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+
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        notifier = new QSocketNotifier(kbdFD, QSocketNotifier::Read, this);+
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        connect(notifier, SIGNAL(activated(int)),this, SLOT(readKeyboardData()));+
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    }+
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}+
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+
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QVFbKeyboardHandler::~QVFbKeyboardHandler()+
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{+
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    if (kbdFD >= 0)+
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        QT_CLOSE(kbdFD);+
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    delete [] kbdBuffer;+
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}+
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+
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+
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void QVFbKeyboardHandler::readKeyboardData()+
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{+
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    int n;+
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    do {+
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        n  = QT_READ(kbdFD, kbdBuffer+kbdIdx, kbdBufferLen - kbdIdx);+
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        if (n > 0)+
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            kbdIdx += n;+
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    } while (n > 0);+
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+
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    int idx = 0;+
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    while (kbdIdx - idx >= (int)sizeof(QVFbKeyData)) {+
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        QVFbKeyData *kd = (QVFbKeyData *)(kbdBuffer + idx);+
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        if (kd->unicode == 0 && kd->keycode == 0 && kd->modifiers == 0 && kd->press) {+
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            // magic exit key+
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            qWarning("Instructed to quit by Virtual Keyboard");+
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            qApp->quit();+
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        }+
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        QWSServer::processKeyEvent(kd->unicode ? kd->unicode : 0xffff, kd->keycode, kd->modifiers, kd->press, kd->repeat);+
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        idx += sizeof(QVFbKeyData);+
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    }+
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+
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    int surplus = kbdIdx - idx;+
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    for (int i = 0; i < surplus; i++)+
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        kbdBuffer[i] = kbdBuffer[idx+i];+
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    kbdIdx = 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_KBD_QVFB+
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#endif // QT_NO_QWS_KEYBOARD+
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