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Diffstat (limited to 'src/gvcore/imageloader.h')
-rw-r--r-- | src/gvcore/imageloader.h | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/src/gvcore/imageloader.h b/src/gvcore/imageloader.h new file mode 100644 index 0000000..c1cc1ec --- /dev/null +++ b/src/gvcore/imageloader.h @@ -0,0 +1,123 @@ +// vim: set tabstop=4 shiftwidth=4 noexpandtab +/* +Gwenview - A simple image viewer for KDE +Copyright 2000-2004 Aurélien Gâteau + +This program is free software; you can redistribute it and/or +modify it under the terms of the GNU General Public License +as published by the Free Software Foundation; either version 2 +of the License, or (at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + +*/ +#ifndef IMAGELOADER_H +#define IMAGELOADER_H + +// Qt +#include <qasyncimageio.h> +#include <qbuffer.h> +#include <qcstring.h> + +// KDE +#include <kio/job.h> + +// Local +#include "tsthread/tsthread.h" +#include "imageframe.h" +#include "busylevelmanager.h" +#include "mimetypeutils.h" + +#include "libgwenview_export.h" +namespace Gwenview { +class DecoderThread : public TSThread { +Q_OBJECT +public: + void setRawData(const QByteArray&); + QImage popLoadedImage(); + +signals: + void failed(); + void succeeded(); + +protected: + void run(); + +private: + QMutex mMutex; + QByteArray mRawData; + QImage mImage; +}; + +class ImageLoaderPrivate; + +class LIBGWENVIEW_EXPORT ImageLoader : public QObject, public QImageConsumer { +Q_OBJECT +public: + static ImageLoader* loader( const KURL& url, const QObject* owner, BusyLevel priority ); // use this instead of ctor + void release( const QObject* owner ); // use this instead of dtor + + QImage processedImage() const; + ImageFrames frames() const; + QCString imageFormat() const; + QByteArray rawData() const; + QString mimeType() const; + MimeTypeUtils::Kind urlKind() const; + KURL url() const; + QRegion loadedRegion() const; // valid parts of processedImage() + bool completed() const; + +signals: + void urlKindDetermined(); + void sizeLoaded(int, int); + void imageChanged(const QRect&); + void imageLoaded( bool ok ); + +private slots: + void slotStatResult(KIO::Job*); + void slotDataReceived(KIO::Job*, const QByteArray& chunk); + void slotGetResult(KIO::Job*); + void decodeChunk(); + void slotDecoderThreadFailed(); + void slotDecoderThreadSucceeded(); + void slotBusyLevelChanged( BusyLevel ); + void ownerDestroyed(); + void startLoading(); + void callFinish(); + +private: + ImageLoader(); + ~ImageLoader(); + void ref( const QObject* owner, BusyLevel priority ); + void deref( const QObject* owner ); + void suspendLoading(); + void resumeLoading(); + void finish( bool ok ); + void startThread(); + void setURL( const KURL& url ); + void checkPendingStat(); + void checkPendingGet(); + BusyLevel priority() const; + + // QImageConsumer methods + void end(); + void changed(const QRect&); + void frameDone(); + void frameDone(const QPoint& offset, const QRect& rect); + void setLooping(int); + void setFramePeriod(int milliseconds); + void setSize(int, int); + + ImageLoaderPrivate* d; +}; + +} // namespace +#endif /* IMAGELOADER_H */ + |