image/qpictureformatplugin.cpp

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3** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). -
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40****************************************************************************/ -
41 -
42#include "qpictureformatplugin.h" -
43#if !defined(QT_NO_LIBRARY) && !defined(QT_NO_PICTURE) -
44#include "qpicture.h" -
45 -
46QT_BEGIN_NAMESPACE -
47 -
48/*! -
49 \obsolete -
50 -
51 \class QPictureFormatPlugin -
52 \brief The QPictureFormatPlugin class provides an abstract base -
53 for custom picture format plugins. -
54 -
55 \ingroup plugins -
56 \inmodule QtGui -
57 -
58 The picture format plugin is a simple plugin interface that makes -
59 it easy to create custom picture formats that can be used -
60 transparently by applications. -
61 -
62 Writing an picture format plugin is achieved by subclassing this -
63 base class, reimplementing the pure virtual functions -
64 loadPicture(), savePicture(), and installIOHandler(), and -
65 exporting the class with the Q_PLUGIN_METADATA() macro. -
66 -
67 The json file containing the metadata should contain one entry -
68 with the list of picture formats supported by the plugin: -
69 -
70 \code -
71 { "Keys": [ "mypictureformat" ] } -
72 \endcode -
73 -
74 \sa {How to Create Qt Plugins} -
75*/ -
76 -
77/*! -
78 \fn bool QPictureFormatPlugin::installIOHandler(const QString &format) -
79 -
80 Installs a QPictureIO picture I/O handler for the picture format \a -
81 format. Returns \c true on success. -
82 -
83 \sa keys() -
84*/ -
85 -
86 -
87/*! -
88 Constructs an picture format plugin with the given \a parent. -
89 This is invoked automatically by the moc generated code that exports the plugin. -
90*/ -
91QPictureFormatPlugin::QPictureFormatPlugin(QObject *parent) -
92 : QObject(parent) -
93{ -
94}
never executed: }
0
95 -
96/*! -
97 Destroys the picture format plugin. -
98 -
99 You never have to call this explicitly. Qt destroys a plugin -
100 automatically when it is no longer used. -
101*/ -
102QPictureFormatPlugin::~QPictureFormatPlugin() -
103{ -
104} -
105 -
106 -
107/*! -
108 Loads the picture stored in the file called \a fileName, with the -
109 given \a format, into *\a picture. Returns true on success; -
110 otherwise returns false. -
111 -
112 \sa savePicture() -
113*/ -
114bool QPictureFormatPlugin::loadPicture(const QString &format, const QString &fileName, QPicture *picture) -
115{ -
116 Q_UNUSED(format)
never executed (the execution status of this line is deduced): (void)format;
-
117 Q_UNUSED(fileName)
never executed (the execution status of this line is deduced): (void)fileName;
-
118 Q_UNUSED(picture)
never executed (the execution status of this line is deduced): (void)picture;
-
119 return false;
never executed: return false;
0
120} -
121 -
122/*! -
123 Saves the given \a picture into the file called \a fileName, -
124 using the specified \a format. Returns true on success; otherwise -
125 returns false. -
126 -
127 \sa loadPicture() -
128*/ -
129bool QPictureFormatPlugin::savePicture(const QString &format, const QString &fileName, const QPicture &picture) -
130{ -
131 Q_UNUSED(format)
never executed (the execution status of this line is deduced): (void)format;
-
132 Q_UNUSED(fileName)
never executed (the execution status of this line is deduced): (void)fileName;
-
133 Q_UNUSED(picture)
never executed (the execution status of this line is deduced): (void)picture;
-
134 return false;
never executed: return false;
0
135} -
136 -
137#endif // QT_NO_LIBRARY || QT_NO_PICTURE -
138 -
139QT_END_NAMESPACE -
140 -
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