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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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4 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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6 ** |
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7 ** This file is part of the Qt Mobility Components. |
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8 ** |
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9 ** $QT_BEGIN_LICENSE:LGPL$ |
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10 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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15 ** |
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16 ** GNU Lesser General Public License Usage |
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17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
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18 ** General Public License version 2.1 as published by the Free Software |
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19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
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20 ** packaging of this file. Please review the following information to |
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21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
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22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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23 ** |
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24 ** In addition, as a special exception, Nokia gives you certain additional |
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25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
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26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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27 ** |
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28 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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38 ** $QT_END_LICENSE$ |
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39 ** |
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40 ****************************************************************************/ |
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41 |
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42 #include <QtCore/qmetaobject.h> |
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43 #include <QtCore/qtimer.h> |
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44 |
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45 #include <qmediacontrol.h> |
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46 #include <qmediacontrol_p.h> |
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47 |
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48 |
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49 |
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50 QTM_BEGIN_NAMESPACE |
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51 |
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52 /*! |
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53 \class QMediaControl |
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54 \ingroup multimedia-serv |
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55 |
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56 \preliminary |
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57 \brief The QMediaControl class provides a base interface for media service controls. |
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58 |
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59 Media controls provide an interface to individual features provided by a media service. Most |
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60 services implement a principal control which exposes the core functionality of the service and |
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61 a number optional controls which expose any additional functionality. |
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62 |
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63 A pointer to a control implemented by a media service can be obtained using the |
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64 \l {QMediaService::control()}{control()} member of QMediaService. If the service doesn't |
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65 implement a control it will instead return a null pointer. |
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66 |
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67 \code |
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68 QMediaPlayerControl *control = qobject_cast<QMediaPlayerControl *>( |
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69 service->control("com.nokia.Qt.QMediaPlayerControl/1.0")); |
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70 \endcode |
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71 |
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72 Alternatively if the IId of the control has been declared using Q_MEDIA_DECLARE_CONTROL |
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73 the template version of QMediaService::control() can be used to request the service without |
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74 explicitly passing the IId. |
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75 |
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76 \code |
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77 QMediaPlayerControl *control = service->control<QMediaPlayerControl *>(); |
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78 \endcode |
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79 |
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80 Most application code will not interface directly with a media service's controls, instead the |
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81 QMediaObject which owns the service acts as an intermeditary between one or more controls and |
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82 the application. |
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83 |
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84 \sa QMediaService, QMediaObject |
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85 */ |
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86 |
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87 /*! |
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88 \macro Q_MEDIA_DECLARE_CONTROL(Class, IId) |
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89 \relates QMediaControl |
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90 |
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91 The Q_MEDIA_DECLARE_CONTROL macro declares an \a IId for a \a Class that inherits from |
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92 QMediaControl. |
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93 |
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94 Declaring an IId for a QMediaControl allows an instance of that control to be requested from |
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95 QMediaService::control() without explicitly passing the IId. |
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96 |
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97 \code |
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98 QMediaPlayerControl *control = service->control<QMediaPlayerControl *>(); |
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99 \endcode |
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100 |
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101 \sa QMediaService::control() |
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102 */ |
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103 |
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104 /*! |
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105 Destroys a media control. |
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106 */ |
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107 |
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108 QMediaControl::~QMediaControl() |
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109 { |
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110 delete d_ptr; |
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111 } |
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112 |
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113 /*! |
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114 Constructs a media control with the given \a parent. |
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115 */ |
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116 |
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117 QMediaControl::QMediaControl(QObject *parent) |
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118 : QObject(parent) |
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119 , d_ptr(new QMediaControlPrivate) |
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120 { |
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121 d_ptr->q_ptr = this; |
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122 } |
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123 |
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124 /*! |
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125 \internal |
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126 */ |
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127 |
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128 QMediaControl::QMediaControl(QMediaControlPrivate &dd, QObject *parent) |
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129 : QObject(parent) |
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130 , d_ptr(&dd) |
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131 |
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132 { |
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133 d_ptr->q_ptr = this; |
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134 } |
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135 |
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136 #include "moc_qmediacontrol.cpp" |
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137 QTM_END_NAMESPACE |
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138 |