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     2 **

     3 ** Copyright (C) 2010 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.

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     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

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    24 ** In addition, as a special exception, Nokia gives you certain additional

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    36 **

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    38 ** $QT_END_LICENSE$

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

    41 

    42 #include "deviceorientation.h"

    43 #include <stdio.h>

    44 #include <stdlib.h>

    45 

    46 class MaemoOrientation : public DeviceOrientation

    47 {

    48     Q_OBJECT

    49 public:

    50     MaemoOrientation()

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

    52     {

    53         m_current = get();

    54         if (m_current == UnknownOrientation) 

    55             m_current = Portrait;

    56 

    57         startTimer(100);

    58     }

    59 

    60     Orientation orientation() const {

    61         return m_current;

    62     }

    63 

    64     void setOrientation(Orientation) { }

    65 

    66 protected:

    67     virtual void timerEvent(QTimerEvent *)

    68     {

    69         Orientation c = get();

    70 

    71         if (c == m_lastSeen) {

    72             m_lastSeenCount++;

    73         } else {

    74             m_lastSeenCount = 0;

    75             m_lastSeen = c;

    76         }

    77 

    78         if (m_lastSeen != UnknownOrientation && m_lastSeen != m_current && m_lastSeenCount > 4) {

    79             m_current = m_lastSeen;

    80             emit orientationChanged();

    81             printf("%d\n", m_current);

    82         }

    83     }

    84 

    85 signals:

    86     void changed();

    87 

    88 private:

    89     Orientation m_current;

    90     Orientation m_lastSeen;

    91     int m_lastSeenCount;

    92 

    93     Orientation get()

    94     {

    95         Orientation o = UnknownOrientation;

    96 

    97         int ax, ay, az;

    98 

    99         read(&ax, &ay, &az);

   100 

   101         if (abs(az) > 850) {

   102             o = UnknownOrientation;

   103         } else if (ax < -750) {

   104             o = Portrait;

   105         } else if (ay < -750) {

   106             o = Landscape;

   107         }

   108 

   109         return o;

   110     }

   111 

   112     int read(int *ax,int *ay,int *az)

   113     {

   114         static const char *accel_filename = "/sys/class/i2c-adapter/i2c-3/3-001d/coord";

   115 

   116         FILE *fd;

   117         int rs;

   118         fd = fopen(accel_filename, "r");

   119         if(fd==NULL){ printf("liqaccel, cannot open for reading\n"); return -1;}

   120         rs=fscanf((FILE*) fd,"%i %i %i",ax,ay,az);

   121         fclose(fd);

   122         if(rs != 3){ printf("liqaccel, cannot read information\n"); return -2;}

   123         return 0;

   124     }

   125 };

   126 

   127 

   128 DeviceOrientation* DeviceOrientation::instance()

   129 {

   130     static MaemoOrientation *o = 0;

   131     if (!o)

   132         o = new MaemoOrientation;

   133     return o;

   134 }

   135 

   136 #include "deviceorientation_maemo.moc"