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previewjob.h
00001 // -*- c++ -*-
00002 // vim: ts=4 sw=4 et
00003 /*  This file is part of the KDE libraries
00004     Copyright (C) 2000 David Faure <faure@kde.org>
00005                   2000 Carsten Pfeiffer <pfeiffer@kde.org>
00006                   2001 Malte Starostik <malte.starostik@t-online.de>
00007 
00008     This library is free software; you can redistribute it and/or
00009     modify it under the terms of the GNU Library General Public
00010     License as published by the Free Software Foundation; either
00011     version 2 of the License, or (at your option) any later version.
00012 
00013     This library is distributed in the hope that it will be useful,
00014     but WITHOUT ANY WARRANTY; without even the implied warranty of
00015     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00016     Library General Public License for more details.
00017 
00018     You should have received a copy of the GNU Library General Public License
00019     along with this library; see the file COPYING.LIB.  If not, write to
00020     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00021     Boston, MA 02110-1301, USA.
00022 */
00023 
00024 #ifndef __tdeio_previewjob_h__
00025 #define __tdeio_previewjob_h__
00026 
00027 #include <tdefileitem.h>
00028 #include <tdeio/job.h>
00029 
00030 class TQPixmap;
00031 
00032 namespace TDEIO {
00037     class TDEIO_EXPORT PreviewJob : public TDEIO::Job
00038     {
00039         Q_OBJECT
00040     public:
00057         PreviewJob( const KFileItemList &items, int width, int height,
00058             int iconSize, int iconAlpha, bool scale, bool save,
00059             const TQStringList *enabledPlugins, bool deleteItems = false );
00060         virtual ~PreviewJob();
00061 
00068         void removeItem( const KFileItem *item );
00069 
00076         void setIgnoreMaximumSize(bool ignoreSize = true);
00077 
00084         static TQStringList availablePlugins();
00085 
00091         static TQStringList supportedMimeTypes();
00092 
00096         virtual void kill( bool quietly = true );
00097 
00098     signals:
00105         void gotPreview( const KFileItem *item, const TQPixmap &preview );
00112         void failed( const KFileItem *item );
00113 
00114     protected:
00115         void getOrCreateThumbnail();
00116         bool statResultThumbnail();
00117         void createThumbnail( TQString );
00118 
00119     protected slots:
00120         virtual void slotResult( TDEIO::Job *job );
00121 
00122     private slots:
00123         void startPreview();
00124         void slotThumbData(TDEIO::Job *, const TQByteArray &);
00125 
00126     private:
00127         void determineNextFile();
00128         void emitPreview(const TQImage &thumb);
00129         void emitFailed(const KFileItem *item = 0);
00130 
00131     protected:
00132     virtual void virtual_hook( int id, void* data );
00133     private:
00134         struct PreviewJobPrivate *d;
00135     };
00136 
00157     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 );
00158 
00179     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 );
00180 }
00181 
00182 #endif

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