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core/StelSkyLayer.hpp

00001 /*
00002  * Copyright (C) 2009 Fabien Chereau
00003  *
00004  * This program is free software; you can redistribute it and/or
00005  * modify it under the terms of the GNU General Public License
00006  * as published by the Free Software Foundation; either version 2
00007  * of the License, or (at your option) any later version.
00008  *
00009  * This program is distributed in the hope that it will be useful,
00010  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00011  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00012  * GNU General Public License for more details.
00013  *
00014  * You should have received a copy of the GNU General Public License
00015  * along with this program; if not, write to the Free Software
00016  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
00017  */
00018 
00019 #ifndef STELSKYLAYER_HPP
00020 #define STELSKYLAYER_HPP
00021 
00022 #include <QObject>
00023 #include <QString>
00024 #include <QSharedPointer>
00025 
00026 class StelCore;
00027 class StelPainter;
00028 
00032 class StelSkyLayer : public QObject
00033 {
00034     Q_OBJECT
00035 public:
00036     StelSkyLayer(QObject* parent=NULL) : QObject(parent) {;}
00037 
00039     virtual void draw(StelCore* core, StelPainter& sPainter, float opacity=1.)=0;
00040 
00042     virtual QString getShortName() const =0;
00043 
00045     virtual QString getShortServerCredits() const {return QString();}
00046 
00049     virtual QString getKeyHint() const {return getShortName();}
00050 
00053     virtual QString getLayerDescriptionHtml() const {return "No description.";}
00054 
00055 signals:
00058     void loadingStateChanged(bool b);
00059 
00062     void percentLoadedChanged(int percentage);
00063 };
00064 
00067 
00070 typedef QSharedPointer<StelSkyLayer> StelSkyLayerP;
00071 
00072 #endif // STELSKYLAYER_HPP

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