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_rect ( surface, x, y, w ,h )
  59         SDL_Surface *surface
  60         int x
  61         int y
  62         int w
  63         int h
  64         CODE:
  65                 SDL_UpdateRect(surface,x,y,w,h);
  66
  67 void
  68 surface_update_rects ( surface, ... )
  69         SDL_Surface *surface
  70         CODE:
  71                 SDL_Rect *rects, *temp;
  72                 int num_rects,i;
  73                 if ( items < 2 ) return;
  74                 num_rects = items - 1;
  75
  76                 rects = (SDL_Rect *)safemalloc(sizeof(SDL_Rect)*items);
  77                 for(i=0;i<num_rects;i++) {
  78                         temp = (SDL_Rect *)SvIV(ST(i+1));
  79                         rects[i].x = temp->x;
  80                         rects[i].y = temp->y;
  81                         rects[i].w = temp->w;
  82                         rects[i].h = temp->h;
  83                 }
  84                 SDL_UpdateRects(surface,num_rects,rects);
  85                 safefree(rects);
  86
  87 SDL_Surface *
  88 surface_display ( surface )
  89         SDL_Surface *surface
  90         CODE:
  91                 char* CLASS = "SDL::Surface";
  92                 RETVAL = SDL_DisplayFormat(surface);
  93         OUTPUT:
  94                 RETVAL
  95
  96 SDL_Surface *
  97 surface_display_alpha ( surface )
  98         SDL_Surface *surface
  99         CODE:
 100                 char* CLASS = "SDL::Surface";
 101                 RETVAL = SDL_DisplayFormatAlpha(surface);
 102         OUTPUT:
 103                 RETVAL
 104
 105 Uint16
 106 surface_pitch( surface )
 107         SDL_Surface *surface
 108         CODE:
 109                 RETVAL = surface->pitch;
 110         OUTPUT:
 111                 RETVAL
 112
 113 Uint16
 114 surface_w ( surface )
 115         SDL_Surface *surface
 116         CODE:
 117                 RETVAL = surface->w;
 118         OUTPUT:
 119                 RETVAL
 120
 121 Uint16
 122 surface_h ( surface )
 123         SDL_Surface *surface
 124         CODE:
 125                 RETVAL = surface->h;
 126         OUTPUT:
 127                 RETVAL
 128
 129 IV
 130 surface_get_pixels(surface)
 131         SDL_Surface *surface
 132         CODE:
 133           if(!surface->pixels) croak("Incomplete surface");
 134           RETVAL = PTR2IV(surface->pixels);
 135         OUTPUT:
 136           RETVAL
 137
 138 void
 139 surface_set_pixels(surface, pixels)
 140         SDL_Surface *surface
 141
 142         SV *pixels
 143
 144         PREINIT:
 145           STRLEN len;
 146           void *p;
 147
 148         CODE:
 149           p = SvPV(pixels, len);
 150           if (len > surface->pitch*surface->h)
 151                 len = surface->pitch*surface->h;
 152           memcpy(surface->pixels, p, len);
 153
 154 void
 155 surface_DESTROY(surface)
 156         SDL_Surface *surface
 157         CODE:
 158                 Uint8* pixels = surface->pixels;
 159                 Uint32 flags = surface->flags;
 160                 SDL_FreeSurface(surface);
 161                 if (flags & SDL_PREALLOC)
 162                         Safefree(pixels);