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_ICO
48 #undef QT_NO_IMAGEFORMAT_ICO
49 #endif
50 #include "qicohandler.h"
51 
53 
54 class QICOPlugin : public QImageIOPlugin
55 {
56 public:
57  QStringList keys() const;
58  Capabilities capabilities(QIODevice *device, const QByteArray &format) const;
59  QImageIOHandler *create(QIODevice *device, const QByteArray &format = QByteArray()) const;
60 };
61 
63 {
64  return QStringList() << QLatin1String("ico");
65 }
66 
67 QImageIOPlugin::Capabilities QICOPlugin::capabilities(QIODevice *device, const QByteArray &format) const
68 {
69  if (format == "ico")
70  return Capabilities(CanRead | CanWrite);
71  if (!format.isEmpty())
72  return 0;
73  if (!device->isOpen())
74  return 0;
75 
76  Capabilities cap;
77  if (device->isReadable() && QtIcoHandler::canRead(device))
78  cap |= CanRead;
79  if (device->isWritable())
80  cap |= CanWrite;
81  return cap;
82 }
83 
85 {
86  QImageIOHandler *handler = new QtIcoHandler(device);
87 
88  handler->setFormat(format);
89  return handler;
90 }
91 
93 
95 
96 #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
bool canRead() const
Verifies if some values (magic bytes) are set as expected in the header of the file.
QLatin1String(DBUS_INTERFACE_DBUS))) Q_GLOBAL_STATIC_WITH_ARGS(QString
The QtIcoHandler class provides support for the ICO image format.
Definition: qicohandler.h:49
QImageIOHandler * create(QIODevice *device, const QByteArray &format=QByteArray()) const
Creates and returns a QImageIOHandler subclass, with device and format set.
Definition: main.cpp:84
Q_EXPORT_PLUGIN2(qjpcodecs, JPTextCodecs)
#define QT_BEGIN_NAMESPACE
This macro expands to.
Definition: qglobal.h:89
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
QStringList keys() const
Returns the list of image keys this plugin supports.
Definition: main.cpp:62
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
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:67
QImageIOHandler * handler
The QIODevice class is the base interface class of all I/O devices in Qt.
Definition: qiodevice.h:66