rom/graphics/copyregion.c

   1 /*
   2     Copyright © 1995-2001, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc: (AROS only) Graphics function CopyRegion()
   6     Lang: english
   7 */
   8 #include "graphics_intern.h"
   9 #include <graphics/regions.h>
  10 #include "intregions.h"
  11
  12 /*****************************************************************************
  13
  14     NAME */
  15 #include <proto/graphics.h>
  16
  17         AROS_LH1(struct Region *, CopyRegion,
  18
  19 /*  SYNOPSIS */
  20         AROS_LHA(struct Region *, region, A0),
  21
  22 /*  LOCATION */
  23         struct GfxBase *, GfxBase, 188, Graphics)
  24
  25 /*  FUNCTION
  26         Make a copy of the given Region.
  27
  28     INPUTS
  29         region - pointer to a Region structure
  30
  31     RESULT
  32         the copy of the Region, or NULL if not enough memory.
  33
  34     NOTES
  35         This function does not exist in AmigaOS.
  36
  37     EXAMPLE
  38
  39     BUGS
  40
  41     SEE ALSO
  42         NewRegion() DisposeRegion()
  43
  44     INTERNALS
  45
  46     HISTORY
  47         13-12-2000  stegerg implemented
  48
  49 *****************************************************************************/
  50 {
  51     AROS_LIBFUNC_INIT
  52
  53     struct Region *nreg;
  54
  55     if ((nreg = NewRegion()))
  56     {
  57         if (region->RegionRectangle)
  58         {
  59             struct RegionRectangle *new = NULL;
  60
  61             nreg->bounds = region->bounds;
  62
  63             if (!_LinkRegionRectangleList(region->RegionRectangle, &new, GfxBase))
  64             {
  65                 DisposeRegion(nreg);
  66                 nreg = NULL;
  67             }
  68
  69             nreg->RegionRectangle = &Chunk(new)->FirstChunk->Rects[0].RR;
  70         }
  71     }
  72
  73     return nreg;
  74
  75     AROS_LIBFUNC_EXIT
  76
  77 } /* CopyRegion */