skymapdrawabstract.h

Go to the documentation of this file.

/***************************************************************************
                 skymapdrawabstract.h  -  K Desktop Planetarium
                             -------------------
    begin                : Mon Dec 20 2010 05:04 AM UTC-6
    copyright            : (C) 2010 Akarsh Simha
    email                : akarsh.simha@kdemail.net
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 ***************************************************************************/

#ifndef SKYMAPDRAWABSTRACT_H_
#define SKYMAPDRAWABSTRACT_H_

#include "kstarsdata.h"
#include <QPainter>
#include <QPaintEvent>
#include <QPaintDevice>

class SkyMap;
class SkyQPainter;

// In summary, this is a class created by stealing all the
// drawing-related methods from the old SkyMap class

class SkyMapDrawAbstract {

 protected:
    virtual ~SkyMapDrawAbstract() { };

 public:

    explicit SkyMapDrawAbstract( SkyMap *sm );

    // *********************** "IMPURE" VIRTUAL METHODS ******************* //
    // NOTE: The following methods are implemented using native
    //   QPainter in both cases. So it's virtual, but not pure virtual

    void drawOverlays( QPainter& p, bool drawFov = true );

    void drawTelescopeSymbols(QPainter &psky);

    void drawZoomBox( QPainter &psky );

    void drawAngleRuler( QPainter &psky );


    void exportSkyImage( QPaintDevice *pd, bool scale = false );

    void exportSkyImage( SkyQPainter *painter, bool scale = false );

    void drawObjectLabels( QList< SkyObject* >& labelObjects );

    static inline bool drawLock() { return m_DrawLock; }

    static void setDrawLock( bool state );

    // *********************** PURE VIRTUAL METHODS ******************* //
    // NOTE: The following methods differ between GL and QPainter backends
    //       Thus, they are pure virtual and must be implemented by the sublcass

 protected:
    virtual void paintEvent( QPaintEvent *e ) = 0;

    /*
     *NOTE:
     *  Depending on whether the implementation of this class is a
     *  GL-backend, it may need to implement these methods:
     *    virtual void resizeGL(int width, int height);
     *    virtual void initializeGL();
     *  So we will not even bother defining them here. 
     *  They must be taken care of in the subclasses
     */

    KStarsData *m_KStarsData;
    SkyMap *m_SkyMap;
    static bool m_DrawLock;

    void calculateFPS();
private:
    int m_framecount;     // To count FPS
    QTime m_fpstime;
};

#endif