1 /****************************************************************************

     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 Qt Mobility Components.

     8 **

     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

    21 ** ensure the GNU Lesser General Public License version 2.1 requirements

    22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

    23 **

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

    25 ** rights.  These rights are described in the Nokia Qt LGPL Exception

    26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

    27 **

    28 ** If you have questions regarding the use of this file, please contact

    29 ** Nokia at qt-info@nokia.com.

    30 **

    31 **

    32 **

    33 **

    34 **

    35 **

    36 **

    37 **

    38 ** $QT_END_LICENSE$

    39 **

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

    41 

    42 #ifndef QGEOINFOTHREAD_WINCE_P_H

    43 #define QGEOINFOTHREAD_WINCE_P_H

    44 

    45 #include "qmobilityglobal.h"

    46 

    47 #include <QThread>

    48 #include <QMutex>

    49 #include <QWaitCondition>

    50 #include <QDateTime>

    51 

    52 #include <windows.h>

    53 

    54 // including requires <windows.h>

    55 #include <gpsapi.h>

    56 

    57 // including requires <windows.h>

    58 // included here rather than in the cpp file to make sure it is included after <windows.h>

    59 #include <service.h> // used for SERVICE_STATE_ constants

    60 

    61 QTM_BEGIN_NAMESPACE

    62 

    63 // Used to determine if the dataUpdated signal should be emitted by a QGeoInfoThreadWinCE instance.

    64 // If valid() returns false the QGeoInfoThreadWinCE instance will ignore the data.

    65 // This is subclassed in order to filter for valid position or satellite data in GPS_POSITION

    66 // structs.

    67 class QGeoInfoValidator

    68 {

    69 public:

    70     QGeoInfoValidator();

    71     virtual ~QGeoInfoValidator();

    72     virtual bool valid(const GPS_POSITION &data) const = 0;

    73 };

    74 

    75 class QGeoInfoThreadWinCE : public QThread

    76 {

    77     Q_OBJECT

    78 

    79 public:

    80     enum {

    81         // The default timeout for requests if none is specified.

    82         DefaultRequestTimeout = 10000,

    83         // The maximum time to spend waiting for GPS events in the main loop of the thread.

    84         MaximumMainLoopWaitTime = 5000

    85     };

    86 

    87     QGeoInfoThreadWinCE(QGeoInfoValidator *validator, bool timeoutsForPeriodicUpdates, QObject *parent = 0);

    88     ~QGeoInfoThreadWinCE();

    89 

    90 //public slots:

    91     void requestUpdate(int timeout = 5000);

    92     void startUpdates();

    93     void stopUpdates();

    94     void setUpdateInterval(int updateInterval);

    95 

    96 signals:

    97     void dataUpdated(GPS_POSITION data);

    98     void updateTimeout();

    99 

   100 protected:

   101     void run();

   102 

   103 private:

   104     void wakeUp();

   105 

   106     QDateTime currentDateTime();

   107     int msecsTo(QDateTime from, QDateTime to);

   108 

   109     QGeoInfoValidator *validator;

   110     bool timeoutsForPeriodicUpdates;

   111 

   112     bool requestScheduled;

   113     qint32 requestInterval;

   114     QDateTime requestNextTime;

   115 

   116     bool updatesScheduled;

   117     qint32 updatesInterval;

   118     QDateTime updatesNextTime;

   119 

   120     bool stopping;

   121 

   122     bool gpsReachedOnState;

   123 

   124     bool hasLastPosition;

   125     bool invalidDataReceived;

   126     bool updateTimeoutTriggered;

   127     GPS_POSITION m_lastPosition;

   128 

   129     QMutex mutex;

   130     QWaitCondition statusUpdated;

   131 

   132     HANDLE m_gps;

   133     HANDLE m_newDataEvent;

   134     HANDLE m_gpsStateChange;

   135     HANDLE m_wakeUpEvent;

   136 };

   137 

   138 QTM_END_NAMESPACE

   139 

   140 #endif //#ifndef QGEOINFOTHREAD_WINCE_P_H