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 void
  58 surface_update_rects ( surface, ... )
  59         SDL_Surface *surface
  60         CODE:
  61                 SDL_Rect *rects, *temp;
  62                 int num_rects,i;
  63                 if ( items < 2 ) return;
  64                 num_rects = items - 1;
  65
  66                 rects = (SDL_Rect *)safemalloc(sizeof(SDL_Rect)*items);
  67                 for(i=0;i<num_rects;i++) {
  68                         temp = (SDL_Rect *)SvIV(ST(i+1));
  69                         rects[i].x = temp->x;
  70                         rects[i].y = temp->y;
  71                         rects[i].w = temp->w;
  72                         rects[i].h = temp->h;
  73                 }
  74                 SDL_UpdateRects(surface,num_rects,rects);
  75                 safefree(rects);
  76
  77 Uint16
  78 surface_pitch( surface )
  79         SDL_Surface *surface
  80         CODE:
  81                 RETVAL = surface->pitch;
  82         OUTPUT:
  83                 RETVAL
  84
  85 Uint16
  86 surface_w ( surface )
  87         SDL_Surface *surface
  88         CODE:
  89                 RETVAL = surface->w;
  90         OUTPUT:
  91                 RETVAL
  92
  93 Uint16
  94 surface_h ( surface )
  95         SDL_Surface *surface
  96         CODE:
  97                 RETVAL = surface->h;
  98         OUTPUT:
  99                 RETVAL
 100
 101 IV
 102 surface_get_pixels(surface)
 103         SDL_Surface *surface
 104         CODE:
 105           if(!surface->pixels) croak("Incomplete surface");
 106           RETVAL = PTR2IV(surface->pixels);
 107         OUTPUT:
 108           RETVAL
 109
 110 void
 111 surface_set_pixels(surface, pixels)
 112         SDL_Surface *surface
 113
 114         SV *pixels
 115
 116         PREINIT:
 117           STRLEN len;
 118           void *p;
 119
 120         CODE:
 121           p = SvPV(pixels, len);
 122           if (len > surface->pitch*surface->h)
 123                 len = surface->pitch*surface->h;
 124           memcpy(surface->pixels, p, len);
 125
 126 void
 127 surface_DESTROY(surface)
 128         SDL_Surface *surface
 129         CODE:
 130                 Uint8* pixels = surface->pixels;
 131                 Uint32 flags = surface->flags;
 132                 SDL_FreeSurface(surface);
 133                 if (flags & SDL_PREALLOC)
 134                         Safefree(pixels);