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     2 **

     3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

     4 ** All rights reserved.

     5 ** Contact: Nokia Corporation (qt-info@nokia.com)

     6 **

     7 ** This file is part of the QtGui module of the Qt Toolkit.

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     9 ** $QT_BEGIN_LICENSE:LGPL$

    10 ** No Commercial Usage

    11 ** This file contains pre-release code and may not be distributed.

    12 ** You may use this file in accordance with the terms and conditions

    13 ** contained in the Technology Preview License Agreement accompanying

    14 ** this package.

    15 **

    16 ** GNU Lesser General Public License Usage

    17 ** Alternatively, this file may be used under the terms of the GNU Lesser

    18 ** General Public License version 2.1 as published by the Free Software

    19 ** Foundation and appearing in the file LICENSE.LGPL included in the

    20 ** packaging of this file.  Please review the following information to

    21 ** ensure the GNU Lesser General Public License version 2.1 requirements

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    23 **

    24 ** In addition, as a special exception, Nokia gives you certain additional

    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception

    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

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    36 **

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    38 ** $QT_END_LICENSE$

    39 **

    40 ****************************************************************************/

    41 

    42 #include <stdlib.h>

    43 #include <sys/types.h>

    44 #include <sys/stat.h>

    45 #include <unistd.h>

    46 #include <fcntl.h>

    47 #include <errno.h>

    48 

    49 #include <qvfbhdr.h>

    50 #include <qkbdvfb_qws.h>

    51 

    52 #ifndef QT_NO_QWS_KEYBOARD

    53 #ifndef QT_NO_QWS_KBD_QVFB

    54 

    55 #include <qwindowsystem_qws.h>

    56 #include <qsocketnotifier.h>

    57 #include <qapplication.h>

    58 #include <private/qcore_unix_p.h> // overrides QT_OPEN

    59 

    60 QT_BEGIN_NAMESPACE

    61 

    62 QVFbKeyboardHandler::QVFbKeyboardHandler(const QString &device)

    63     : QObject()

    64 {

    65     terminalName = device;

    66     if (terminalName.isEmpty())

    67         terminalName = QLatin1String("/dev/vkdb");

    68     kbdFD = -1;

    69     kbdIdx = 0;

    70     kbdBufferLen = sizeof(QVFbKeyData) * 5;

    71     kbdBuffer = new unsigned char [kbdBufferLen];

    72 

    73     if ((kbdFD = QT_OPEN(terminalName.toLatin1().constData(), O_RDONLY | O_NDELAY)) < 0) {

    74         qWarning("Cannot open %s (%s)", terminalName.toLatin1().constData(),

    75         strerror(errno));

    76     } else {

    77         // Clear pending input

    78         char buf[2];

    79         while (QT_READ(kbdFD, buf, 1) > 0) { }

    80 

    81         notifier = new QSocketNotifier(kbdFD, QSocketNotifier::Read, this);

    82         connect(notifier, SIGNAL(activated(int)),this, SLOT(readKeyboardData()));

    83     }

    84 }

    85 

    86 QVFbKeyboardHandler::~QVFbKeyboardHandler()

    87 {

    88     if (kbdFD >= 0)

    89         QT_CLOSE(kbdFD);

    90     delete [] kbdBuffer;

    91 }

    92 

    93 

    94 void QVFbKeyboardHandler::readKeyboardData()

    95 {

    96     int n;

    97     do {

    98         n  = QT_READ(kbdFD, kbdBuffer+kbdIdx, kbdBufferLen - kbdIdx);

    99         if (n > 0)

   100             kbdIdx += n;

   101     } while (n > 0);

   102 

   103     int idx = 0;

   104     while (kbdIdx - idx >= (int)sizeof(QVFbKeyData)) {

   105         QVFbKeyData *kd = (QVFbKeyData *)(kbdBuffer + idx);

   106         if (kd->unicode == 0 && kd->keycode == 0 && kd->modifiers == 0 && kd->press) {

   107             // magic exit key

   108             qWarning("Instructed to quit by Virtual Keyboard");

   109             qApp->quit();

   110         }

   111         QWSServer::processKeyEvent(kd->unicode ? kd->unicode : 0xffff, kd->keycode, kd->modifiers, kd->press, kd->repeat);

   112         idx += sizeof(QVFbKeyData);

   113     }

   114 

   115     int surplus = kbdIdx - idx;

   116     for (int i = 0; i < surplus; i++)

   117         kbdBuffer[i] = kbdBuffer[idx+i];

   118     kbdIdx = surplus;

   119 }

   120 

   121 QT_END_NAMESPACE

   122 

   123 #endif // QT_NO_QWS_KBD_QVFB

   124 #endif // QT_NO_QWS_KEYBOARD