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 SDL_Surface *
  78 surface_display ( surface )
  79         SDL_Surface *surface
  80         CODE:
  81                 char* CLASS = "SDL::Surface";
  82
  83                 SDL_Surface *new_surface = SDL_DisplayFormat(surface);
  84                 SDL_FreeSurface(surface);
  85                 RETVAL = new_surface;
  86         OUTPUT:
  87                 RETVAL
  88
  89 SDL_Surface *
  90 surface_display_alpha ( surface )
  91         SDL_Surface *surface
  92         CODE:
  93                 char* CLASS = "SDL::Surface";
  94                 SDL_Surface *new_surface = SDL_DisplayFormatAlpha(surface);
  95                 SDL_FreeSurface(surface);
  96                 RETVAL = new_surface;
  97         OUTPUT:
  98                 RETVAL
  99
 100 Uint16
 101 surface_pitch( surface )
 102         SDL_Surface *surface
 103         CODE:
 104                 RETVAL = surface->pitch;
 105         OUTPUT:
 106                 RETVAL
 107
 108 Uint16
 109 surface_w ( surface )
 110         SDL_Surface *surface
 111         CODE:
 112                 RETVAL = surface->w;
 113         OUTPUT:
 114                 RETVAL
 115
 116 Uint16
 117 surface_h ( surface )
 118         SDL_Surface *surface
 119         CODE:
 120                 RETVAL = surface->h;
 121         OUTPUT:
 122                 RETVAL
 123
 124 IV
 125 surface_get_pixels(surface)
 126         SDL_Surface *surface
 127         CODE:
 128           if(!surface->pixels) croak("Incomplete surface");
 129           RETVAL = PTR2IV(surface->pixels);
 130         OUTPUT:
 131           RETVAL
 132
 133 void
 134 surface_set_pixels(surface, pixels)
 135         SDL_Surface *surface
 136
 137         SV *pixels
 138
 139         PREINIT:
 140           STRLEN len;
 141           void *p;
 142
 143         CODE:
 144           p = SvPV(pixels, len);
 145           if (len > surface->pitch*surface->h)
 146                 len = surface->pitch*surface->h;
 147           memcpy(surface->pixels, p, len);
 148
 149 void
 150 surface_DESTROY(surface)
 151         SDL_Surface *surface
 152         CODE:
 153                 Uint8* pixels = surface->pixels;
 154                 Uint32 flags = surface->flags;
 155                 SDL_FreeSurface(surface);
 156                 if (flags & SDL_PREALLOC)
 157                         Safefree(pixels);