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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** 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 "deviceorientation.h"
#include <stdio.h>
#include <stdlib.h>
class MaemoOrientation : public DeviceOrientation
{
Q_OBJECT
public:
MaemoOrientation()
: DeviceOrientation(),m_current(TopUp), m_lastSeen(TopUp), m_lastSeenCount(0)
{
m_current = get();
if (m_current == UnknownOrientation)
m_current = TopUp;
startTimer(100);
}
Orientation orientation() const {
return m_current;
}
void setOrientation(Orientation) { }
protected:
virtual void timerEvent(QTimerEvent *)
{
Orientation c = get();
if (c == m_lastSeen) {
m_lastSeenCount++;
} else {
m_lastSeenCount = 0;
m_lastSeen = c;
}
if (m_lastSeen != UnknownOrientation && m_lastSeen != m_current && m_lastSeenCount > 4) {
m_current = m_lastSeen;
emit orientationChanged();
printf("%d\n", m_current);
}
}
signals:
void changed();
private:
Orientation m_current;
Orientation m_lastSeen;
int m_lastSeenCount;
Orientation get()
{
Orientation o = UnknownOrientation;
int ax, ay, az;
read(&ax, &ay, &az);
if (abs(az) > 850) {
o = UnknownOrientation;
} else if (ax < -750) {
o = LeftUp;
} else if (ax > 750) {
o = RightUp;
} else if (ay < -750) {
o = TopUp;
} else if (ay > 750) {
o = TopDown;
}
return o;
}
int read(int *ax,int *ay,int *az)
{
static const char *accel_filename = "/sys/class/i2c-adapter/i2c-3/3-001d/coord";
FILE *fd;
int rs;
fd = fopen(accel_filename, "r");
if(fd==NULL){ printf("liqaccel, cannot open for reading\n"); return -1;}
rs=fscanf((FILE*) fd,"%i %i %i",ax,ay,az);
fclose(fd);
if(rs != 3){ printf("liqaccel, cannot read information\n"); return -2;}
return 0;
}
};
DeviceOrientation* DeviceOrientation::instance()
{
static MaemoOrientation *o = 0;
if (!o)
o = new MaemoOrientation;
return o;
}
#include "deviceorientation_maemo.moc"
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