KDECore
kfilterbase.h
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00019 #ifndef __kfilterbase__h
00020 #define __kfilterbase__h
00021
00022 #include <kdecore_export.h>
00023
00024 #include <QtCore/QObject>
00025 #include <QtCore/QString>
00026
00027 class QIODevice;
00028
00035 class KDECORE_EXPORT KFilterBase
00036 {
00037 public:
00038 KFilterBase();
00039 virtual ~KFilterBase();
00040
00046 void setDevice( QIODevice * dev, bool autodelete = false );
00047
00048
00049
00054 QIODevice * device();
00056 virtual void init( int mode ) = 0;
00058 virtual int mode() const = 0;
00060 virtual void terminate();
00062 virtual void reset();
00064 virtual bool readHeader() = 0;
00066 virtual bool writeHeader( const QByteArray & filename ) = 0;
00068 virtual void setOutBuffer( char * data, uint maxlen ) = 0;
00070 virtual void setInBuffer( const char * data, uint size ) = 0;
00072 virtual bool inBufferEmpty() const;
00074 virtual int inBufferAvailable() const = 0;
00076 virtual bool outBufferFull() const;
00078 virtual int outBufferAvailable() const = 0;
00079
00081 enum Result { Ok, End, Error };
00083 virtual Result uncompress() = 0;
00085 virtual Result compress( bool finish ) = 0;
00086
00093 static KFilterBase * findFilterByFileName( const QString & fileName );
00094
00101 static KFilterBase * findFilterByMimeType( const QString & mimeType );
00102
00103 protected:
00104 QIODevice * m_dev;
00105 bool m_bAutoDel;
00106 protected:
00110 virtual void virtual_hook( int id, void* data );
00111 private:
00112 Q_DISABLE_COPY( KFilterBase )
00113 class Private;
00114 Private * const d;
00115 };
00116
00117 #endif