guirotator.h

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/********************************************************************************/
/*                                                                              */
/*  Netrinjo-Engine - a library for game-development                            */
/*  Copyright (C) 1999, 2000, 2005 by Tobias Nadler und Georg Schnattinger      */
/*                                                                              */
/*  This library is free software; you can redistribute it and/or               */
/*  modify it under the terms of the GNU Lesser General Public                  */
/*  License as published by the Free Software Foundation; either                */
/*  version 2.1 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           */
/*  Lesser General Public License for more details.                             */
/*                                                                              */
/*  You should have received a copy of the GNU Lesser General Public            */
/*  License along with this library; if not, write to the Free Software         */
/*  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA   */
/*                                                                              */
/********************************************************************************/

#ifndef GUIROTATOR_H
#define GUIROTATOR_H

#include "guielement.h"

class SdlSurface;

class DECLSPEC GuiRotator : public GuiElement
{
public:
    DECLSPEC GuiRotator( const SDL_Rect &r, GuiElement *p, const char *name, SdlSurface *bmp, double angle = 0 );
    DECLSPEC GuiRotator(TiXmlElement *el, GuiElement *p);
    virtual DECLSPEC ~GuiRotator();

    virtual const char *getClassName()  { return "GuiRotator"; }
    
    DECLSPEC void setAngleSpeed( double a, double speed );
    DECLSPEC void setAngle( double a );
    DECLSPEC void setSpeed( double speed );
    void setBmp( SdlSurface *s )    { sBmp = s; }

    double dZoom;
    bool bSmooth;

    static void newguiobject(void *presult, BasicObject *o, void *xmldata)
    {
        GuiElement *r = new GuiRotator((TiXmlElement*)xmldata, (GuiElement*)o);
        *(GuiElement**)presult = r;
    }
protected:
    virtual DECLSPEC Uint32 onFrame( SdlSurface *dst );
    virtual DECLSPEC void paintBg( SdlSurface *dst );
    virtual DECLSPEC void onInit();

private:
    SdlSurface *sBmp;
    double dAngle;
    double dSpeed;// 360 => one round per second
    Uint32 nTime;
};

#endif

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