workbench/libs/muimaster/mui_beginrefresh.c

   1 /*
   2     Copyright © 2002-2007, The AROS Development Team. All rights reserved.
   3     $Id$
   4 */
   5
   6 #include <proto/graphics.h>
   7 #include <proto/layers.h>
   8 #include <proto/intuition.h>
   9 #include <proto/muimaster.h>
  10
  11 #include "mui.h"
  12 #include "muimaster_intern.h"
  13
  14 /*****************************************************************************
  15
  16     NAME */
  17         AROS_LH2(BOOL, MUI_BeginRefresh,
  18
  19 /*  SYNOPSIS */
  20         AROS_LHA( struct MUI_RenderInfo *, mri, A0),
  21         AROS_LHA(ULONG, flags, D0),
  22
  23 /*  LOCATION */
  24         struct Library *, MUIMasterBase, 32, MUIMaster)
  25
  26 /*  FUNCTION
  27
  28     INPUTS
  29
  30     RESULT
  31
  32     NOTES
  33
  34     EXAMPLE
  35
  36     BUGS
  37
  38     SEE ALSO
  39
  40     INTERNALS
  41
  42 *****************************************************************************/
  43 {
  44     AROS_LIBFUNC_INIT
  45
  46     struct Window *w = mri->mri_Window;
  47     struct Layer  *l;
  48
  49     if ((w == NULL) || !(w->Flags & WFLG_SIMPLE_REFRESH))
  50         return 0;
  51
  52     l = w->WLayer;
  53
  54     /* doesn't need refreshing */
  55     if (!(l->Flags & LAYERREFRESH))
  56         return 0;
  57
  58     /* already refreshing */
  59     if (mri->mri_Flags & MUIMRI_REFRESHMODE)
  60         return 0;
  61
  62     mri->mri_Flags |= MUIMRI_REFRESHMODE;
  63     LockLayerInfo(&w->WScreen->LayerInfo);
  64     BeginRefresh(w);
  65     return 1;
  66
  67     AROS_LIBFUNC_EXIT
  68
  69 } /* MUIA_BeginRefresh */