src/Core/objects/Surface.xs

   1 #include "EXTERN.h"
   2 #include "perl.h"
   3 #include "XSUB.h"
   4
   5 #ifndef aTHX_
   6 #define aTHX_
   7 #endif
   8
   9 #include <SDL.h>
  10
  11 MODULE = SDL::Surface   PACKAGE = SDL::Surface    PREFIX = surface_
  12
  13 =for documentation
  14
  15 SDL_Surface -- Graphic surface structure
  16
  17   typedef struct SDL_Surface {
  18       Uint32 flags;                           /* Read-only */
  19       SDL_PixelFormat *format;                /* Read-only */
  20       int w, h;                               /* Read-only */
  21       Uint16 pitch;                           /* Read-only */
  22       void *pixels;                           /* Read-write */
  23       SDL_Rect clip_rect;                     /* Read-only */
  24       int refcount;                           /* Read-mostly */
  25
  26     /* This structure also contains private fields not shown here */
  27   } SDL_Surface;
  28
  29 =cut
  30
  31 SDL_Surface *
  32 surface_new (CLASS, flags, width, height, depth, Rmask, Gmask, Bmask, Amask )
  33         char* CLASS
  34         Uint32 flags
  35         int width
  36         int height
  37         int depth
  38         Uint32 Rmask
  39         Uint32 Gmask
  40         Uint32 Bmask
  41         Uint32 Amask
  42         CODE:
  43                 RETVAL = SDL_CreateRGBSurface ( flags, width, height,
  44                                 depth, Rmask, Gmask, Bmask, Amask );
  45         OUTPUT:
  46                 RETVAL
  47
  48 SDL_PixelFormat *
  49 surface_format ( surface )
  50         SDL_Surface *surface
  51         CODE:
  52                 char* CLASS = "SDL::PixelFormat";
  53                 RETVAL = surface->format;
  54         OUTPUT:
  55                 RETVAL
  56
  57 int
  58 surface_fill_rect ( dest, dest_rect, color )
  59         SDL_Surface *dest
  60         SDL_Color *color
  61         SDL_Rect *dest_rect
  62         CODE:
  63                 Uint32 pixel = SDL_MapRGB(dest->format,color->r,color->g,color->b);
  64                 RETVAL = SDL_FillRect(dest,dest_rect,pixel);
  65         OUTPUT:
  66                 RETVAL
  67
  68 void
  69 surface_update_rect ( surface, x, y, w ,h )
  70         SDL_Surface *surface
  71         int x
  72         int y
  73         int w
  74         int h
  75         CODE:
  76                 SDL_UpdateRect(surface,x,y,w,h);
  77
  78 void
  79 surface_update_rects ( surface, ... )
  80         SDL_Surface *surface
  81         CODE:
  82                 SDL_Rect *rects, *temp;
  83                 int num_rects,i;
  84                 if ( items < 2 ) return;
  85                 num_rects = items - 1;
  86
  87                 rects = (SDL_Rect *)safemalloc(sizeof(SDL_Rect)*items);
  88                 for(i=0;i<num_rects;i++) {
  89                         temp = (SDL_Rect *)SvIV(ST(i+1));
  90                         rects[i].x = temp->x;
  91                         rects[i].y = temp->y;
  92                         rects[i].w = temp->w;
  93                         rects[i].h = temp->h;
  94                 }
  95                 SDL_UpdateRects(surface,num_rects,rects);
  96                 safefree(rects);
  97
  98 SDL_Surface *
  99 surface_display ( surface )
 100         SDL_Surface *surface
 101         CODE:
 102                 char* CLASS = "SDL::Surface";
 103                 RETVAL = SDL_DisplayFormat(surface);
 104         OUTPUT:
 105                 RETVAL
 106
 107 SDL_Surface *
 108 surface_display_alpha ( surface )
 109         SDL_Surface *surface
 110         CODE:
 111                 char* CLASS = "SDL::Surface";
 112                 RETVAL = SDL_DisplayFormatAlpha(surface);
 113         OUTPUT:
 114                 RETVAL
 115
 116 Uint16
 117 surface_pitch( surface )
 118         SDL_Surface *surface
 119         CODE:
 120                 RETVAL = surface->pitch;
 121         OUTPUT:
 122                 RETVAL
 123
 124 Uint16
 125 surface_w ( surface )
 126         SDL_Surface *surface
 127         CODE:
 128                 RETVAL = surface->w;
 129         OUTPUT:
 130                 RETVAL
 131
 132 Uint16
 133 surface_h ( surface )
 134         SDL_Surface *surface
 135         CODE:
 136                 RETVAL = surface->h;
 137         OUTPUT:
 138                 RETVAL
 139
 140 IV
 141 surface_get_pixels(surface)
 142         SDL_Surface *surface
 143         CODE:
 144           if(!surface->pixels) croak("Incomplete surface");
 145           RETVAL = PTR2IV(surface->pixels);
 146         OUTPUT:
 147           RETVAL
 148
 149 void
 150 surface_set_pixels(surface, pixels)
 151         SDL_Surface *surface
 152
 153         SV *pixels
 154
 155         PREINIT:
 156           STRLEN len;
 157           void *p;
 158
 159         CODE:
 160           p = SvPV(pixels, len);
 161           if (len > surface->pitch*surface->h)
 162                 len = surface->pitch*surface->h;
 163           memcpy(surface->pixels, p, len);
 164
 165 void
 166 surface_DESTROY(surface)
 167         SDL_Surface *surface
 168         CODE:
 169                 Uint8* pixels = surface->pixels;
 170                 Uint32 flags = surface->flags;
 171                 SDL_FreeSurface(surface);
 172                 if (flags & SDL_PREALLOC)
 173                         Safefree(pixels);