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94 lines
2.6 KiB
94 lines
2.6 KiB
#ifndef THUMBNAILSERVICE_H
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#define THUMBNAILSERVICE_H
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/**
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* Copyright (C) 1997-2003 the KGhostView authors. See file AUTHORS.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include <set>
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#include <tqobject.h>
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#include <tqpixmap.h>
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#include <tqguardedptr.h>
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#include <stdio.h>
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class KPSWidget;
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class KGVMiniWidget;
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class TQTimer;
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class ThumbnailService : public TQObject {
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Q_OBJECT
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TQ_OBJECT
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public:
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ThumbnailService( KGVMiniWidget* parent, const char* name = 0 );
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~ThumbnailService();
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public slots:
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void delayedGetThumbnail( int page, TQObject* receiver, const char* slot, bool urgent = false );
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/**
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* Cancels the request matching the signature below.
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*
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* @param page the page of the request. Use "-1" for wildcard
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* @param receiver the receiver. Use null for wildcard
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* @param slot Use null for wildcard
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*/
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void cancelRequests( int page, TQObject* receiver, const char* slot);
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void reset();
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/**
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* This "suspends" the service.
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* Unlike @ref reset(), if you call setEnabled( false ),
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* old requests will be kept and will be serviced when
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* you call setEnabled( true ) later.
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*/
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void setEnabled( bool );
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signals:
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/**
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* Don't connect to this directly
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*/
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void relayPixmap( TQPixmap );
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private slots:
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void slotDone( TQPixmap );
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void processOne();
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private:
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struct Request {
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Request( int p, TQObject* r, const char* s ) :
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page( p ), receiver( r ), slot( s ), urgent( false ) { }
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Request( int p, TQObject* r, const char* s, bool u ) :
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page( p ), receiver( r ), slot( s ), urgent( u ) { }
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int page;
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TQObject* receiver;
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const char* slot;
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bool urgent;
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bool operator < ( Request ) const;
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};
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static bool pageCmp( Request, Request );
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std::set<Request> pending;
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TQGuardedPtr<KPSWidget> _thumbnailDrawer;
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KGVMiniWidget* _mini;
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TQTimer* timer_;
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bool _busy;
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bool _enabled;
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};
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// vim:sw=4:sts=4:ts=8:sta:tw=78:noet
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#endif // THUMBNAILSERVICE_H
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