rom/intuition/makescreen.c

   1 /*
   2     Copyright © 1995-2007, The AROS Development Team. All rights reserved.
   3     Copyright © 2001-2003, The MorphOS Development Team. All Rights Reserved.
   4     $Id$
   5 */
   6
   7 #include <proto/graphics.h>
   8 #include "intuition_intern.h"
   9
  10 /*****************************************************************************
  11
  12     NAME */
  13 #include <proto/intuition.h>
  14
  15     AROS_LH1(LONG, MakeScreen,
  16
  17 /*  SYNOPSIS */
  18          AROS_LHA(struct Screen *, screen, A0),
  19
  20 /*  LOCATION */
  21          struct IntuitionBase *, IntuitionBase, 63, Intuition)
  22
  23 /*  FUNCTION
  24     Create viewport of the screen.
  25
  26     INPUTS
  27     Pointer to your custom screen.
  28
  29     RESULT
  30     Zero for success, non-zero for failure.
  31
  32     NOTES
  33
  34     EXAMPLE
  35
  36     BUGS
  37
  38     SEE ALSO
  39     RemakeDisplay(), RethinkDisplay(), graphics.library/MakeVPort(),
  40
  41     INTERNALS
  42
  43     HISTORY
  44
  45 *****************************************************************************/
  46 {
  47     AROS_LIBFUNC_INIT
  48
  49     LONG  failure = TRUE;
  50     ULONG ilock = LockIBase(0);
  51
  52     if (screen)
  53     {
  54         if ((screen->ViewPort.Modes ^ IntuitionBase->ViewLord.Modes) & LACE)
  55         {
  56             failure = RemakeDisplay();
  57         }
  58         else
  59         {
  60             failure = MakeVPort(&IntuitionBase->ViewLord, &screen->ViewPort);
  61         }
  62     }
  63
  64     UnlockIBase(ilock);
  65
  66     return failure;
  67
  68     AROS_LIBFUNC_EXIT
  69 } /* MakeScreen */