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#include "deviceorientation.h"

#include <stdio.h>

#include <stdlib.h>

class MaemoOrientation : public DeviceOrientation

{

    Q_OBJECT

public:

    MaemoOrientation()

        : DeviceOrientation(),m_current(Portrait), m_lastSeen(Portrait), m_lastSeenCount(0)

    {

        m_current = get();

        if (m_current == UnknownOrientation) 

            m_current = Portrait;

        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 = Portrait;

        } else if (ay < -750) {

            o = Landscape;

        }

        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"