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qpictureformatplugin.cpp

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1/****************************************************************************-
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3** Copyright (C) 2016 The Qt Company Ltd.-
4** Contact: https://www.qt.io/licensing/-
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38****************************************************************************/-
39-
40#include "qpictureformatplugin.h"-
41#if !defined(QT_NO_PICTURE)-
42#include "qpicture.h"-
43-
44QT_BEGIN_NAMESPACE-
45-
46/*!-
47 \obsolete-
48-
49 \class QPictureFormatPlugin-
50 \brief The QPictureFormatPlugin class provides an abstract base-
51 for custom picture format plugins.-
52-
53 \ingroup plugins-
54 \inmodule QtGui-
55-
56 The picture format plugin is a simple plugin interface that makes-
57 it easy to create custom picture formats that can be used-
58 transparently by applications.-
59-
60 Writing an picture format plugin is achieved by subclassing this-
61 base class, reimplementing the pure virtual functions-
62 loadPicture(), savePicture(), and installIOHandler(), and-
63 exporting the class with the Q_PLUGIN_METADATA() macro.-
64-
65 The json file containing the metadata should contain one entry-
66 with the list of picture formats supported by the plugin:-
67-
68 \code-
69 { "Keys": [ "mypictureformat" ] }-
70 \endcode-
71-
72 \sa {How to Create Qt Plugins}-
73*/-
74-
75/*!-
76 \fn bool QPictureFormatPlugin::installIOHandler(const QString &format)-
77-
78 Installs a QPictureIO picture I/O handler for the picture format \a-
79 format. Returns \c true on success.-
80*/-
81-
82-
83/*!-
84 Constructs an picture format plugin with the given \a parent.-
85 This is invoked automatically by the moc generated code that exports the plugin.-
86*/-
87QPictureFormatPlugin::QPictureFormatPlugin(QObject *parent)-
88 : QObject(parent)-
89{-
90}
never executed: end of block
0
91-
92/*!-
93 Destroys the picture format plugin.-
94-
95 You never have to call this explicitly. Qt destroys a plugin-
96 automatically when it is no longer used.-
97*/-
98QPictureFormatPlugin::~QPictureFormatPlugin()-
99{-
100}-
101-
102-
103/*!-
104 Loads the picture stored in the file called \a fileName, with the-
105 given \a format, into *\a picture. Returns \c true on success;-
106 otherwise returns \c false.-
107-
108 \sa savePicture()-
109*/-
110bool QPictureFormatPlugin::loadPicture(const QString &format, const QString &fileName, QPicture *picture)-
111{-
112 Q_UNUSED(format)-
113 Q_UNUSED(fileName)-
114 Q_UNUSED(picture)-
115 return false;
never executed: return false;
0
116}-
117-
118/*!-
119 Saves the given \a picture into the file called \a fileName,-
120 using the specified \a format. Returns \c true on success; otherwise-
121 returns \c false.-
122-
123 \sa loadPicture()-
124*/-
125bool QPictureFormatPlugin::savePicture(const QString &format, const QString &fileName, const QPicture &picture)-
126{-
127 Q_UNUSED(format)-
128 Q_UNUSED(fileName)-
129 Q_UNUSED(picture)-
130 return false;
never executed: return false;
0
131}-
132-
133#endif // QT_NO_PICTURE-
134-
135QT_END_NAMESPACE-
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