Qt 4.8
main.cpp
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41 
42 #include <qimageiohandler.h>
43 #include <qdebug.h>
44 
45 #ifndef QT_NO_IMAGEFORMATPLUGIN
46 
47 #ifdef QT_NO_IMAGEFORMAT_TIFF
48 #undef QT_NO_IMAGEFORMAT_TIFF
49 #endif
50 #include <qtiffhandler_p.h>
51 
53 
55 {
56 public:
57  Capabilities capabilities(QIODevice * device, const QByteArray & format) const;
58  QImageIOHandler * create(QIODevice * device, const QByteArray & format = QByteArray()) const;
59  QStringList keys() const;
60 };
61 
62 QImageIOPlugin::Capabilities QTiffPlugin::capabilities(QIODevice *device, const QByteArray &format) const
63 {
64  if (format == "tiff" || format == "tif")
65  return Capabilities(CanRead | CanWrite);
66  if (!format.isEmpty())
67  return 0;
68  if (!device->isOpen())
69  return 0;
70 
71  Capabilities cap;
72  if (device->isReadable() && QTiffHandler::canRead(device))
73  cap |= CanRead;
74  if (device->isWritable())
75  cap |= CanWrite;
76  return cap;
77 }
78 
80 {
81  QImageIOHandler *tiffHandler = new QTiffHandler();
82  tiffHandler->setDevice(device);
83  tiffHandler->setFormat(format);
84  return tiffHandler;
85 }
86 
88 {
89  return QStringList() << QLatin1String("tiff") << QLatin1String("tif");
90 }
91 
94 
96 
97 #endif /* QT_NO_IMAGEFORMATPLUGIN */
void setFormat(const QByteArray &format)
Sets the format of the QImageIOHandler to format.
#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
bool isWritable() const
Returns true if data can be written to the device; otherwise returns false.
Definition: qiodevice.cpp:558
The QByteArray class provides an array of bytes.
Definition: qbytearray.h:135
QLatin1String(DBUS_INTERFACE_DBUS))) Q_GLOBAL_STATIC_WITH_ARGS(QString
Q_EXPORT_PLUGIN2(qjpcodecs, JPTextCodecs)
Q_EXPORT_STATIC_PLUGIN(JPTextCodecs)
#define QT_BEGIN_NAMESPACE
This macro expands to.
Definition: qglobal.h:89
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:62
bool isOpen() const
Returns true if the device is open; otherwise returns false.
Definition: qiodevice.cpp:530
The QStringList class provides a list of strings.
Definition: qstringlist.h:66
bool canRead() const
Returns true if an image can be read from the device (i.
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...
bool isEmpty() const
Returns true if the byte array has size 0; otherwise returns false.
Definition: qbytearray.h:421
QImageIOHandler * create(QIODevice *device, const QByteArray &format=QByteArray()) const
Creates and returns a QImageIOHandler subclass, with device and format set.
Definition: main.cpp:79
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:87