1 /****************************************************************************

     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 tools applications of the Qt Toolkit.

     8 **

     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

    22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

    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.

    27 **

    28 ** If you have questions regarding the use of this file, please contact

    29 ** Nokia at qt-info@nokia.com.

    30 **

    31 **

    32 **

    33 **

    34 **

    35 **

    36 **

    37 **

    38 ** $QT_END_LICENSE$

    39 **

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

    41 

    42 #include "qvfbprotocol.h"

    43 #include "qvfbhdr.h"

    44 

    45 #include <QDebug>

    46 #include <QTimer>

    47 

    48 #include <sys/types.h>

    49 #include <sys/stat.h>

    50 #include <math.h>

    51 #include <fcntl.h>

    52 #include <stdlib.h>

    53 #include <stdio.h>

    54 

    55 #ifdef Q_OS_UNIX

    56 #include <unistd.h>

    57 #endif

    58 

    59 #include "qvfbshmem.h"

    60 

    61 QT_BEGIN_NAMESPACE

    62 

    63 QVFbViewProtocol::QVFbViewProtocol(int display_id, QObject *parent) :

    64     QObject(parent), mDisplayId(display_id) { }

    65 

    66 QVFbViewProtocol::~QVFbViewProtocol() {}

    67 

    68 void QVFbViewProtocol::flushChanges() {}

    69 

    70 void QVFbViewProtocol::sendKeyboardData(QString unicode, int keycode,

    71                                         int modifiers, bool press, bool repeat)

    72 {

    73     if (keyHandler())

    74         keyHandler()->sendKeyboardData(unicode, keycode, modifiers, press, repeat);

    75 }

    76 

    77 void QVFbViewProtocol::sendMouseData(const QPoint &pos, int buttons, int wheel)

    78 {

    79     if (mouseHandler())

    80         mouseHandler()->sendMouseData(pos, buttons, wheel);

    81 }

    82 

    83 static int openPipe(const char *fileName)

    84 {

    85     unlink(fileName);

    86 

    87     mkfifo(fileName, 0666);

    88     int fd = ::open(fileName, O_RDWR | O_NDELAY);

    89     return fd;

    90 }

    91 

    92 QVFbKeyPipeProtocol::QVFbKeyPipeProtocol(int display_id)

    93     : QVFbKeyProtocol(display_id)

    94 {

    95     fileName = QT_VFB_KEYBOARD_PIPE(display_id);

    96     fd = openPipe(fileName.toLocal8Bit().constData());

    97 

    98     if (fd == -1)

    99 	qFatal("Cannot open keyboard pipe %s", fileName.toLocal8Bit().data());

   100 }

   101 

   102 QVFbKeyPipeProtocol::~QVFbKeyPipeProtocol()

   103 {

   104     sendKeyboardData(0, 0, 0, true, false); // magic die key

   105     ::close(fd);

   106     unlink(fileName.toLocal8Bit().constData());

   107 }

   108 

   109 void QVFbKeyPipeProtocol::sendKeyboardData(QString unicode, int keycode,

   110                                            int modifiers, bool press, bool repeat)

   111 {

   112     QVFbKeyData kd;

   113     kd.unicode = unicode[0].unicode();

   114     kd.keycode = keycode;

   115     kd.modifiers = static_cast<Qt::KeyboardModifier>(modifiers);

   116     kd.press = press;

   117     kd.repeat = repeat;

   118     write(fd, &kd, sizeof(QVFbKeyData));

   119 }

   120 

   121 QVFbMousePipe::QVFbMousePipe(int display_id)

   122     : QVFbMouseProtocol(display_id)

   123 {

   124     fileName = QT_VFB_MOUSE_PIPE(display_id);

   125     fd = openPipe(fileName.toLocal8Bit().constData());

   126 

   127     if (fd == -1)

   128 	qFatal("Cannot open mouse pipe %s", fileName.toLocal8Bit().data());

   129 }

   130 

   131 QVFbMousePipe::~QVFbMousePipe()

   132 {

   133     ::close(fd);

   134     unlink(fileName.toLocal8Bit().constData());

   135 }

   136 

   137 

   138 void QVFbMousePipe::sendMouseData(const QPoint &pos, int buttons, int wheel)

   139 {

   140     write(fd, &pos, sizeof(QPoint));

   141     write(fd, &buttons, sizeof(int));

   142     write(fd, &wheel, sizeof(int));

   143 }

   144 

   145 QVFbMouseLinuxTP::QVFbMouseLinuxTP(int display_id)

   146     : QObject(), QVFbMousePipe(display_id), lastPos(-1,-1)

   147 {

   148     /* the timer is needed because a real touch screen send data as long as

   149        there is pressure.  And the linux tp driver will filter, requiring

   150        a minimum of 5 samples before it even registers a press.

   151     */

   152     repeater = new QTimer(this);

   153     connect(repeater, SIGNAL(timeout()), this, SLOT(repeatLastPress()));

   154 }

   155 

   156 QVFbMouseLinuxTP::~QVFbMouseLinuxTP()

   157 {

   158 }

   159 

   160 

   161 void QVFbMouseLinuxTP::sendMouseData(const QPoint &pos, int buttons, int)

   162 {

   163     if (buttons & Qt::LeftButton) {

   164         // press

   165         repeater->start(5);

   166         writeToPipe(pos, 1);

   167         lastPos = pos;

   168     } else {

   169         // release

   170         if (lastPos == QPoint(-1,-1))

   171             return; /* only send one release */

   172         repeater->stop();

   173         writeToPipe(pos, 0);

   174         lastPos = QPoint(-1,-1);

   175     }

   176 }

   177 

   178 void QVFbMouseLinuxTP::writeToPipe(const QPoint &pos, ushort pressure)

   179 {

   180     ushort v;

   181     write(fd, &pressure, sizeof(ushort));

   182     v = pos.x();

   183     write(fd, &v, sizeof(ushort));

   184     v = pos.y();

   185     write(fd, &v, sizeof(ushort));

   186     v = 1; // pad

   187     write(fd, &v, sizeof(ushort));

   188 }

   189 

   190 void QVFbMouseLinuxTP::repeatLastPress()

   191 {

   192     writeToPipe(lastPos, 1);

   193 }

   194 

   195 QT_END_NAMESPACE