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// 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 */
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