previewjob.h

/*  This file is part of the KDE libraries
    Copyright (C) 2000 David Faure <faure@kde.org>
                  2000 Carsten Pfeiffer <pfeiffer@kde.org>
                  2001 Malte Starostik <malte.starostik@t-online.de>
 
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.
 
    This library 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
    Library General Public License for more details.
 
    You should have received a copy of the GNU Library General Public License
    along with this library; see the file COPYING.LIB.  If not, write to
    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
    Boston, MA 02110-1301, USA.
*/
 
#ifndef __tdeio_previewjob_h__
#define __tdeio_previewjob_h__
 
#include <tdefileitem.h>
#include <tdeio/job.h>
 
class TQPixmap;
 
namespace TDEIO {
    class TDEIO_EXPORT PreviewJob : public TDEIO::Job
    {
        TQ_OBJECT
    public:
        PreviewJob( const KFileItemList &items, int width, int height,
            int iconSize, int iconAlpha, bool scale, bool save,
            const TQStringList *enabledPlugins, bool deleteItems = false );
        virtual ~PreviewJob();

        void removeItem( const KFileItem *item );

        void setIgnoreMaximumSize(bool ignoreSize = true);

        static TQStringList availablePlugins();

        static TQStringList supportedMimeTypes();

        virtual void kill( bool quietly = true );
 
    signals:
        void gotPreview( const KFileItem *item, const TQPixmap &preview );
        void failed( const KFileItem *item );
 
    protected:
        void getOrCreateThumbnail();
        bool statResultThumbnail();
        void createThumbnail( TQString );
 
    protected slots:
        virtual void slotResult( TDEIO::Job *job );
 
    private slots:
        void startPreview();
        void slotThumbData(TDEIO::Job *, const TQByteArray &);
 
    private:
        void determineNextFile();
        void emitPreview(const TQImage &thumb);
        void emitFailed(const KFileItem *item = 0);
 
    protected:
    virtual void virtual_hook( int id, void* data );
    private:
        struct PreviewJobPrivate *d;
    };

    TDEIO_EXPORT PreviewJob *filePreview( const KFileItemList &items, int width, int height = 0, int iconSize = 0, int iconAlpha = 70, bool scale = true, bool save = true, const TQStringList *enabledPlugins = 0 );

    TDEIO_EXPORT PreviewJob *filePreview( const KURL::List &items, int width, int height = 0, int iconSize = 0, int iconAlpha = 70, bool scale = true, bool save = true, const TQStringList *enabledPlugins = 0 );
}
 
#endif