sprite.c

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/***********************************************************************
 Freeciv - Copyright (C) 2005 The Freeciv Team
   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, or (at your option)
   any later version.
 
   This program 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 General Public License for more details.
***********************************************************************/
 
#ifdef HAVE_CONFIG_H
#include <fc_config.h>
#endif
 
/* SDL3 */
#include <SDL3/SDL.h>
#include <SDL3_image/SDL_image.h>
 
/* utility */
#include "fcintl.h"
#include "log.h"
#include "mem.h"
 
/* client/gui-sdl3 */
#include "colors.h"
#include "graphics.h"
 
#include "sprite.h"
 
static struct sprite *ctor_sprite(SDL_Surface *surf);
 
/************************************************************************/
const char **gfx_fileextensions(void)
{
  static const char *ext[] = {
    "png",
    "xpm",
    NULL
  };
 
  return ext;
}
 
/************************************************************************/
struct sprite *load_gfxfile(const char *filename, bool svgflag)
{
  SDL_Surface *pbuf = NULL;
  SDL_Surface *pconv;
 
  if ((pbuf = IMG_Load(filename)) == NULL) {
    log_error(_("load_gfxfile(): Unable to load graphic file %s!"), filename);
    return NULL; /* Should I use abort() ? */
  }
 
  pconv = convert_surf(pbuf);
  FREESURFACE(pbuf);
 
  return ctor_sprite(pconv);
}
 
/************************************************************************/
struct sprite *crop_sprite(struct sprite *source,
                           int x, int y, int width, int height,
                           struct sprite *mask,
                           int mask_offset_x, int mask_offset_y,
                           float scale, bool smooth)
{
  SDL_Rect src_rect = {(Sint16) x, (Sint16) y, (Uint16) width, (Uint16) height};
  SDL_Surface *psrc = crop_rect_from_surface(GET_SURF(source), &src_rect);
  SDL_Surface *pdest = NULL;
 
  if (mask) {
    pdest = mask_surface(psrc, mask->psurface, x - mask_offset_x, y - mask_offset_y);
    FREESURFACE(psrc);
    return ctor_sprite(pdest);
  }
 
  return ctor_sprite(psrc);
}
 
/************************************************************************/
struct sprite *create_sprite(int width, int height, struct color *pcolor)
{
  SDL_Surface *mypixbuf = NULL;
 
  fc_assert_ret_val(width > 0, NULL);
  fc_assert_ret_val(height > 0, NULL);
  fc_assert_ret_val(pcolor != NULL, NULL);
 
  mypixbuf = SDL_CreateSurface(width, height, SDL_PIXELFORMAT_RGBA8888);
 
  SDL_FillSurfaceRect(mypixbuf, NULL,
                      SDL_MapRGBA(SDL_GetPixelFormatDetails(mypixbuf->format),
                                  NULL,
                                  pcolor->color->r,
                                  pcolor->color->g,
                                  pcolor->color->b,
                                  pcolor->color->a));
 
  return ctor_sprite(mypixbuf);
}
 
/************************************************************************/
void get_sprite_dimensions(struct sprite *sprite, int *width, int *height)
{
  *width = GET_SURF(sprite)->w;
  *height = GET_SURF(sprite)->h;
}
 
/************************************************************************/
void free_sprite(struct sprite *s)
{
  fc_assert_ret(s != NULL);
  FREESURFACE(GET_SURF_REAL(s));
  FC_FREE(s);
}
 
/************************************************************************/
static struct sprite *ctor_sprite(SDL_Surface *surf)
{
  struct sprite *result = fc_malloc(sizeof(struct sprite));
 
  result->psurface = surf;
 
  return result;
}
 
/************************************************************************/
struct sprite *load_gfxnumber(int num)
{
  /* Not supported in sdl3-client */
  return NULL;
}