/****************************************************************************+
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**+
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** Copyright (C) 2009 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 tools applications 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 "qvfbprotocol.h"+
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#include "qvfbhdr.h"+
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+
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#include <QDebug>+
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#include <QTimer>+
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+
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#include <sys/types.h>+
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#include <sys/stat.h>+
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#include <math.h>+
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#include <fcntl.h>+
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#include <stdlib.h>+
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#include <stdio.h>+
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+
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#ifdef Q_OS_UNIX+
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#include <unistd.h>+
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#endif+
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+
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#include "qvfbshmem.h"+
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+
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QT_BEGIN_NAMESPACE+
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+
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QVFbViewProtocol::QVFbViewProtocol(int display_id, QObject *parent) :+
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    QObject(parent), mDisplayId(display_id) { }+
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+
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QVFbViewProtocol::~QVFbViewProtocol() {}+
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+
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void QVFbViewProtocol::flushChanges() {}+
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+
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void QVFbViewProtocol::sendKeyboardData(QString unicode, int keycode,+
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                                        int modifiers, bool press, bool repeat)+
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{+
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    if (keyHandler())+
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        keyHandler()->sendKeyboardData(unicode, keycode, modifiers, press, repeat);+
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}+
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+
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void QVFbViewProtocol::sendMouseData(const QPoint &pos, int buttons, int wheel)+
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{+
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    if (mouseHandler())+
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        mouseHandler()->sendMouseData(pos, buttons, wheel);+
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}+
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+
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static int openPipe(const char *fileName)+
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{+
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    unlink(fileName);+
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+
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    mkfifo(fileName, 0666);+
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    int fd = ::open(fileName, O_RDWR | O_NDELAY);+
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    return fd;+
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}+
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+
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QVFbKeyPipeProtocol::QVFbKeyPipeProtocol(int display_id)+
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    : QVFbKeyProtocol(display_id)+
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{+
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    fileName = QT_VFB_KEYBOARD_PIPE(display_id);+
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    fd = openPipe(fileName.toLocal8Bit().constData());+
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+
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    if (fd == -1)+
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	qFatal("Cannot open keyboard pipe %s", fileName.toLocal8Bit().data());+
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}+
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+
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QVFbKeyPipeProtocol::~QVFbKeyPipeProtocol()+
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{+
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    sendKeyboardData(0, 0, 0, true, false); // magic die key+
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    ::close(fd);+
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    unlink(fileName.toLocal8Bit().constData());+
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}+
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+
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void QVFbKeyPipeProtocol::sendKeyboardData(QString unicode, int keycode,+
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                                           int modifiers, bool press, bool repeat)+
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{+
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    QVFbKeyData kd;+
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    kd.unicode = unicode[0].unicode();+
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    kd.keycode = keycode;+
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    kd.modifiers = static_cast<Qt::KeyboardModifier>(modifiers);+
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    kd.press = press;+
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    kd.repeat = repeat;+
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    write(fd, &kd, sizeof(QVFbKeyData));+
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}+
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+
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QVFbMousePipe::QVFbMousePipe(int display_id)+
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    : QVFbMouseProtocol(display_id)+
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{+
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    fileName = QT_VFB_MOUSE_PIPE(display_id);+
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    fd = openPipe(fileName.toLocal8Bit().constData());+
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+
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    if (fd == -1)+
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	qFatal("Cannot open mouse pipe %s", fileName.toLocal8Bit().data());+
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}+
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+
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QVFbMousePipe::~QVFbMousePipe()+
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{+
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    ::close(fd);+
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    unlink(fileName.toLocal8Bit().constData());+
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}+
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+
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+
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void QVFbMousePipe::sendMouseData(const QPoint &pos, int buttons, int wheel)+
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{+
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    write(fd, &pos, sizeof(QPoint));+
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    write(fd, &buttons, sizeof(int));+
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    write(fd, &wheel, sizeof(int));+
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}+
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+
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QVFbMouseLinuxTP::QVFbMouseLinuxTP(int display_id)+
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    : QObject(), QVFbMousePipe(display_id), lastPos(-1,-1)+
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{+
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    /* the timer is needed because a real touch screen send data as long as+
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       there is pressure.  And the linux tp driver will filter, requiring+
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       a minimum of 5 samples before it even registers a press.+
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    */+
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    repeater = new QTimer(this);+
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    connect(repeater, SIGNAL(timeout()), this, SLOT(repeatLastPress()));+
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}+
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+
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QVFbMouseLinuxTP::~QVFbMouseLinuxTP()+
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{+
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}+
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+
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+
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void QVFbMouseLinuxTP::sendMouseData(const QPoint &pos, int buttons, int)+
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{+
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    if (buttons & Qt::LeftButton) {+
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        // press+
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        repeater->start(5);+
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        writeToPipe(pos, 1);+
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        lastPos = pos;+
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    } else {+
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        // release+
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        if (lastPos == QPoint(-1,-1))+
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            return; /* only send one release */+
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        repeater->stop();+
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        writeToPipe(pos, 0);+
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        lastPos = QPoint(-1,-1);+
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    }+
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}+
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+
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void QVFbMouseLinuxTP::writeToPipe(const QPoint &pos, ushort pressure)+
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{+
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    ushort v;+
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    write(fd, &pressure, sizeof(ushort));+
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    v = pos.x();+
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    write(fd, &v, sizeof(ushort));+
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    v = pos.y();+
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    write(fd, &v, sizeof(ushort));+
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    v = 1; // pad+
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    write(fd, &v, sizeof(ushort));+
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}+
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+
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void QVFbMouseLinuxTP::repeatLastPress()+
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{+
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    writeToPipe(lastPos, 1);+
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}+
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+
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QT_END_NAMESPACE+
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