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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the tools applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.1, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qvfbprotocol.h"
#include "qvfbhdr.h"
#include <QDebug>
#include <QTimer>
#include <sys/types.h>
#include <sys/stat.h>
#include <math.h>
#include <fcntl.h>
#include <stdlib.h>
#include <stdio.h>
#ifdef Q_OS_UNIX
#include <unistd.h>
#endif
QT_BEGIN_NAMESPACE
QVFbViewProtocol::QVFbViewProtocol(int display_id, QObject *parent) :
QObject(parent), mDisplayId(display_id) { }
QVFbViewProtocol::~QVFbViewProtocol() {}
void QVFbViewProtocol::flushChanges() {}
void QVFbViewProtocol::sendKeyboardData(QString unicode, int keycode,
int modifiers, bool press, bool repeat)
{
if (keyHandler())
keyHandler()->sendKeyboardData(unicode, keycode, modifiers, press, repeat);
}
void QVFbViewProtocol::sendMouseData(const QPoint &pos, int buttons, int wheel)
{
if (mouseHandler())
mouseHandler()->sendMouseData(pos, buttons, wheel);
}
static int openPipe(const char *fileName)
{
unlink(fileName);
mkfifo(fileName, 0666);
int fd = ::open(fileName, O_RDWR | O_NDELAY);
return fd;
}
QVFbKeyPipeProtocol::QVFbKeyPipeProtocol(int display_id)
: QVFbKeyProtocol(display_id)
{
fileName = QString(QT_VFB_KEYBOARD_PIPE).arg(display_id);
fd = openPipe(fileName.toLocal8Bit().constData());
if (fd == -1)
qFatal("Cannot open keyboard pipe %s", fileName.toLocal8Bit().data());
}
QVFbKeyPipeProtocol::~QVFbKeyPipeProtocol()
{
sendKeyboardData(0, 0, 0, true, false); // magic die key
::close(fd);
unlink(fileName.toLocal8Bit().constData());
}
void QVFbKeyPipeProtocol::sendKeyboardData(QString unicode, int keycode,
int modifiers, bool press, bool repeat)
{
QVFbKeyData kd;
kd.unicode = unicode[0].unicode();
kd.keycode = keycode;
kd.modifiers = static_cast<Qt::KeyboardModifier>(modifiers);
kd.press = press;
kd.repeat = repeat;
write(fd, &kd, sizeof(QVFbKeyData));
}
QVFbMousePipe::QVFbMousePipe(int display_id)
: QVFbMouseProtocol(display_id)
{
fileName = QString(QT_VFB_MOUSE_PIPE).arg(display_id);
fd = openPipe(fileName.toLocal8Bit().constData());
if (fd == -1)
qFatal("Cannot open mouse pipe %s", fileName.toLocal8Bit().data());
}
QVFbMousePipe::~QVFbMousePipe()
{
::close(fd);
unlink(fileName.toLocal8Bit().constData());
}
void QVFbMousePipe::sendMouseData(const QPoint &pos, int buttons, int wheel)
{
write(fd, &pos, sizeof(QPoint));
write(fd, &buttons, sizeof(int));
write(fd, &wheel, sizeof(int));
}
QVFbMouseLinuxTP::QVFbMouseLinuxTP(int display_id)
: QObject(), QVFbMousePipe(display_id), lastPos(-1,-1)
{
/* the timer is needed because a real touch screen send data as long as
there is pressure. And the linux tp driver will filter, requiring
a minimum of 5 samples before it even registers a press.
*/
repeater = new QTimer(this);
connect(repeater, SIGNAL(timeout()), this, SLOT(repeatLastPress()));
}
QVFbMouseLinuxTP::~QVFbMouseLinuxTP()
{
}
void QVFbMouseLinuxTP::sendMouseData(const QPoint &pos, int buttons, int)
{
if (buttons & Qt::LeftButton) {
// press
repeater->start(5);
writeToPipe(pos, 1);
lastPos = pos;
} else {
// release
if (lastPos == QPoint(-1,-1))
return; /* only send one release */
repeater->stop();
writeToPipe(pos, 0);
lastPos = QPoint(-1,-1);
}
}
void QVFbMouseLinuxTP::writeToPipe(const QPoint &pos, ushort pressure)
{
ushort v;
write(fd, &pressure, sizeof(ushort));
v = pos.x();
write(fd, &v, sizeof(ushort));
v = pos.y();
write(fd, &v, sizeof(ushort));
v = 1; // pad
write(fd, &v, sizeof(ushort));
}
void QVFbMouseLinuxTP::repeatLastPress()
{
writeToPipe(lastPos, 1);
}
QT_END_NAMESPACE
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