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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 QtGui module of the Qt Toolkit. |
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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 "qpictureformatplugin.h" |
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43 #if !defined(QT_NO_LIBRARY) && !defined(QT_NO_PICTURE) |
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44 #include "qpicture.h" |
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45 |
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46 QT_BEGIN_NAMESPACE |
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47 |
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48 /*! |
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49 \obsolete |
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50 |
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51 \class QPictureFormatPlugin |
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52 \brief The QPictureFormatPlugin class provides an abstract base |
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53 for custom picture format plugins. |
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54 |
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55 \ingroup plugins |
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56 |
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57 The picture format plugin is a simple plugin interface that makes |
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58 it easy to create custom picture formats that can be used |
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59 transparently by applications. |
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60 |
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61 Writing an picture format plugin is achieved by subclassing this |
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62 base class, reimplementing the pure virtual functions keys(), |
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63 loadPicture(), savePicture(), and installIOHandler(), and |
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64 exporting the class with the Q_EXPORT_PLUGIN2() macro. |
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65 |
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66 \sa {How to Create Qt Plugins} |
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67 */ |
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68 |
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69 /*! |
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70 \fn QStringList QPictureFormatPlugin::keys() const |
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71 |
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72 Returns the list of picture formats this plugin supports. |
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73 |
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74 \sa installIOHandler() |
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75 */ |
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76 |
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77 /*! |
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78 \fn bool QPictureFormatPlugin::installIOHandler(const QString &format) |
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79 |
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80 Installs a QPictureIO picture I/O handler for the picture format \a |
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81 format. |
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82 |
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83 \sa keys() |
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84 */ |
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85 |
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86 |
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87 /*! |
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88 Constructs an picture format plugin with the given \a parent. |
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89 This is invoked automatically by the Q_EXPORT_PLUGIN2() macro. |
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90 */ |
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91 QPictureFormatPlugin::QPictureFormatPlugin(QObject *parent) |
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92 : QObject(parent) |
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93 { |
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94 } |
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95 |
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96 /*! |
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97 Destroys the picture format plugin. |
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98 |
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99 You never have to call this explicitly. Qt destroys a plugin |
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100 automatically when it is no longer used. |
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101 */ |
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102 QPictureFormatPlugin::~QPictureFormatPlugin() |
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103 { |
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104 } |
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105 |
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106 |
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107 /*! |
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108 Loads the picture stored in the file called \a fileName, with the |
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109 given \a format, into *\a picture. Returns true on success; |
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110 otherwise returns false. |
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111 |
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112 \sa savePicture() |
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113 */ |
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114 bool QPictureFormatPlugin::loadPicture(const QString &format, const QString &fileName, QPicture *picture) |
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115 { |
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116 Q_UNUSED(format) |
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117 Q_UNUSED(fileName) |
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118 Q_UNUSED(picture) |
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119 return false; |
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120 } |
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121 |
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122 /*! |
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123 Saves the given \a picture into the file called \a fileName, |
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124 using the specified \a format. Returns true on success; otherwise |
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125 returns false. |
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126 |
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127 \sa loadPicture() |
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128 */ |
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129 bool QPictureFormatPlugin::savePicture(const QString &format, const QString &fileName, const QPicture &picture) |
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130 { |
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131 Q_UNUSED(format) |
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132 Q_UNUSED(fileName) |
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133 Q_UNUSED(picture) |
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134 return false; |
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135 } |
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136 |
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137 #endif // QT_NO_LIBRARY || QT_NO_PICTURE |
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138 |
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139 QT_END_NAMESPACE |