pgdraw.h

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/*
    ParaGUI - crossplatform widgetset
    Copyright (C) 2000,2001,2002  Alexander Pipelka
 
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 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
    Library General Public License for more details.
 
    You should have received a copy of the GNU Library General Public
    License along with this library; if not, write to the Free
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
    Alexander Pipelka
    pipelka@teleweb.at
 
    Last Update:      $Author: mbickel $
    Update Date:      $Date: 2007-04-13 16:15:56 $
    Source File:      $Source: /home/cvspsrv/cvsroot/games/asc/source/libs/paragui/include/pgdraw.h,v $
    CVS/RCS Revision: $Revision: 1.2 $
    Status:           $State: Exp $
*/

#ifndef PG_DRAW_H
#define PG_DRAW_H

#include "pgrect.h"
#include "pgcolor.h"

#ifndef M_PI

#define M_PI 3.14159265359
#endif // M_PI

namespace PG_Draw {

// Background modes
enum BkMode {
    TILE,
    STRETCH,
    TILE3H,
    TILE3V,
    TILE9
};



DECLSPEC SDL_Surface* RotoScaleSurface(SDL_Surface *src, double angle,
                                       double zoom, bool smooth = true);


DECLSPEC SDL_Surface* ScaleSurface(SDL_Surface *src, double zoomx, double zoomy,
                                   bool smooth = true);


static inline SDL_Surface *ScaleSurface(SDL_Surface *src, const PG_Rect &rect,
                                        bool smooth = true) {
        return ScaleSurface(src, static_cast<double>(rect.w) / src->w,
                            static_cast<double>(rect.h) / src->h, smooth);
}


static inline SDL_Surface *ScaleSurface(SDL_Surface *src, Uint16 newx, Uint16 newy,
                                        bool smooth = true) {
        return ScaleSurface(src, static_cast<double>(newx) / src->w,
                            static_cast<double>(newy) / src->h, smooth);
}


DECLSPEC void BlitScale(SDL_Surface *src, SDL_Surface *dst, bool smooth = true);

DECLSPEC SDL_Surface* CreateGradient(const PG_Rect& r, PG_Gradient& gradient);

DECLSPEC SDL_Surface* CreateGradient(const PG_Rect& r, const PG_Color& ul, const PG_Color& ur, const PG_Color& dl, const PG_Color& dr);

DECLSPEC void DrawGradient(SDL_Surface* surface, const PG_Rect& r, PG_Gradient& gradient);

DECLSPEC void DrawGradient(SDL_Surface * surface, const PG_Rect& rect, const PG_Color& ul, const PG_Color& ur, const PG_Color& dl, const PG_Color& dr);

DECLSPEC SDL_Surface* CreateRGBSurface(Uint16 w, Uint16 h, int flags = SDL_SWSURFACE);

DECLSPEC void DrawThemedSurface(SDL_Surface* surface, const PG_Rect& r, PG_Gradient* gradient, SDL_Surface* background, BkMode bkmode, Uint8 blend);

DECLSPEC void DrawLine(SDL_Surface* surface, Uint32 x0, Uint32 y0, Uint32 x1, Uint32 y1, const PG_Color& color, Uint8 width = 1);

DECLSPEC void SetPixel(int x, int y, const PG_Color& c, SDL_Surface * surface);

inline void BlitSurface(SDL_Surface* srf_src, const PG_Rect& rect_src, SDL_Surface* srf_dst, const PG_Rect& rect_dst) {
        SDL_BlitSurface(srf_src, const_cast<PG_Rect*>(&rect_src), srf_dst, const_cast<PG_Rect*>(&rect_dst));
}

DECLSPEC void DrawTile(SDL_Surface* surface, const PG_Rect& ref, const PG_Rect& drawrect, SDL_Surface* tilemap);

#ifndef DOXYGEN_SKIP
// These will disappear (moved to another lib)
DECLSPEC void RectStretch(SDL_Surface* src_surface, int xs1, int ys1, int xs2, int ys2, SDL_Surface* dst_surface, int xd1, int yd1, int xd2, int yd2, Uint32* voiLUT);
DECLSPEC void CreateFilterLUT();
DECLSPEC void PG_SmoothFast(SDL_Surface* src, SDL_Surface* dst);
DECLSPEC void InterpolatePixel(SDL_Surface* src, SDL_Surface* dest);
#endif // DOXYGEN_SKIP

} // namespace PG_Draw

#endif // PG_DRAW_H

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