Qt 4.8
main.cpp
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41 
42 #include <qimageiohandler.h>
43 #include <qstringlist.h>
44 
45 #ifndef QT_NO_IMAGEFORMATPLUGIN
46 
47 #ifdef QT_NO_IMAGEFORMAT_GIF
48 #undef QT_NO_IMAGEFORMAT_GIF
49 #endif
50 #include <qgifhandler_p.h>
51 
53 
54 class QGifPlugin : public QImageIOPlugin
55 {
56 public:
57  QGifPlugin();
58  ~QGifPlugin();
59 
60  QStringList keys() const;
61  Capabilities capabilities(QIODevice *device, const QByteArray &format) const;
62  QImageIOHandler *create(QIODevice *device, const QByteArray &format = QByteArray()) const;
63 };
64 
66 {
67 }
68 
70 {
71 }
72 
74 {
75  return QStringList() << QLatin1String("gif");
76 }
77 
78 QImageIOPlugin::Capabilities QGifPlugin::capabilities(QIODevice *device, const QByteArray &format) const
79 {
80  if (format == "gif" || (device && device->isReadable() && QGifHandler::canRead(device)))
81  return Capabilities(CanRead);
82  return 0;
83 }
84 
86 {
88  handler->setDevice(device);
89  handler->setFormat(format);
90  return handler;
91 }
92 
95 
96 #endif // QT_NO_IMAGEFORMATPLUGIN
97 
Capabilities capabilities(QIODevice *device, const QByteArray &format) const
Returns the capabilities on the plugin, based on the data in device and the format format...
Definition: main.cpp:78
bool canRead() const
Returns true if an image can be read from the device (i.
void setFormat(const QByteArray &format)
Sets the format of the QImageIOHandler to format.
QImageIOHandler * create(QIODevice *device, const QByteArray &format=QByteArray()) const
Creates and returns a QImageIOHandler subclass, with device and format set.
Definition: main.cpp:85
#define QT_END_NAMESPACE
This macro expands to.
Definition: qglobal.h:90
bool isReadable() const
Returns true if data can be read from the device; otherwise returns false.
Definition: qiodevice.cpp:544
The QByteArray class provides an array of bytes.
Definition: qbytearray.h:135
QLatin1String(DBUS_INTERFACE_DBUS))) Q_GLOBAL_STATIC_WITH_ARGS(QString
QGifPlugin()
Definition: main.cpp:65
Q_EXPORT_PLUGIN2(qjpcodecs, JPTextCodecs)
Q_EXPORT_STATIC_PLUGIN(JPTextCodecs)
#define QT_BEGIN_NAMESPACE
This macro expands to.
Definition: qglobal.h:89
The QStringList class provides a list of strings.
Definition: qstringlist.h:66
~QGifPlugin()
Definition: main.cpp:69
void setDevice(QIODevice *device)
Sets the device of the QImageIOHandler to device.
The QImageIOPlugin class defines an interface for writing an image format plugin. ...
The QImageIOHandler class defines the common image I/O interface for all image formats in Qt...
QImageIOHandler * handler
The QIODevice class is the base interface class of all I/O devices in Qt.
Definition: qiodevice.h:66
QStringList keys() const
Returns the list of image keys this plugin supports.
Definition: main.cpp:73