rom/graphics/getvpmodeid.c

   1 /*
   2     Copyright © 1995-2010, The AROS Development Team. All rights reserved.
   3     $Id$
   4
   5     Desc: Graphics function GetVPModeID()
   6     Lang: english
   7 */
   8 #include <aros/debug.h>
   9 #include <graphics/view.h>
  10 #include <graphics/modeid.h>
  11 #include <hidd/graphics.h>
  12 #include <proto/graphics.h>
  13
  14 #include "graphics_intern.h"
  15 #include "dispinfo.h"
  16 #include "gfxfuncsupport.h"
  17
  18 /*****************************************************************************
  19
  20     NAME */
  21 #include <proto/graphics.h>
  22
  23         AROS_LH1(ULONG, GetVPModeID,
  24
  25 /*  SYNOPSIS */
  26         AROS_LHA(struct ViewPort *, vp, A0),
  27
  28 /*  LOCATION */
  29         struct GfxBase *, GfxBase, 132, Graphics)
  30
  31 /*  FUNCTION
  32         returns the normal display modeID, if one is currently associated
  33         with this ViewPort
  34
  35     INPUTS
  36         vp - pointer to ViewPort structure
  37
  38     RESULT
  39         modeID - a 32 bit DisplayInfoRecord identifier associated
  40                  with this ViewPort, or INVALID_ID
  41
  42     NOTES
  43
  44     EXAMPLE
  45
  46     BUGS
  47
  48     SEE ALSO
  49         ModeNotAvailable(), graphics/displayinfo.h
  50
  51     INTERNALS
  52
  53     HISTORY
  54
  55
  56 ******************************************************************************/
  57 {
  58     AROS_LIBFUNC_INIT
  59
  60     ULONG modeid;
  61
  62     if (vp->ColorMap)
  63         /* If we have a colormap, get ModeID from it */
  64         modeid = vp->ColorMap->VPModeID;
  65     else if (IS_HIDD_BM(vp->RasInfo->BitMap))
  66         modeid = GET_BM_MODEID(vp->RasInfo->BitMap);
  67     else
  68         modeid = INVALID_ID;
  69
  70     D(bug(" GetVPModeID returning %x\n", modeid));
  71     return modeid;
  72
  73     AROS_LIBFUNC_EXIT
  74 } /* GetVPModeID */