rom/intuition/beginrefresh.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/layers.h>
   8 #include <proto/graphics.h>
   9 #include "intuition_intern.h"
  10 #include "inputhandler_actions.h"
  11 #include "inputhandler_support.h"
  12
  13 #ifdef SKINS
  14 #   include "renderwindowframe.h"
  15 #endif
  16
  17 /*****************************************************************************
  18
  19     NAME */
  20 #include <proto/intuition.h>
  21
  22 AROS_LH1(void, BeginRefresh,
  23
  24          /*  SYNOPSIS */
  25          AROS_LHA(struct Window *, window, A0),
  26
  27          /*  LOCATION */
  28          struct IntuitionBase *, IntuitionBase, 59, Intuition)
  29
  30 /*  FUNCTION
  31
  32     INPUTS
  33
  34     RESULT
  35
  36     NOTES
  37
  38     EXAMPLE
  39
  40     BUGS
  41
  42     SEE ALSO
  43
  44     INTERNALS
  45
  46 *****************************************************************************/
  47 {
  48     AROS_LIBFUNC_INIT
  49
  50     ULONG mode = NO_DOUBLEBUFFER;
  51
  52 #ifdef BEGINUPDATEGADGETREFRESH
  53     BOOL gadgetrefresh = FALSE;
  54 #endif
  55
  56     DEBUG_REFRESH(dprintf("BeginRefresh: Window 0x%lx\n", window));
  57
  58     SANITY_CHECK(window)
  59
  60     //jDc: makes sure we've got 1 refresing window at a time
  61     LockLayerInfo(&window->WScreen->LayerInfo);
  62
  63     /* Find out whether it's a GimmeZeroZero window with an extra layer to lock */
  64     if (BLAYER(window))
  65         LockLayer(0, BLAYER(window));
  66
  67     /* jDc: in actual implementation border layer is created as the 1st one. this means it's added to
  68     ** screens layer semaphore list at the end (layers use AddTail), so here we also need to lock it
  69     ** as 1st one, otherwise we run into a deadlock with LockLayers() !!!
  70     */
  71
  72     LockLayer(0, WLAYER(window));
  73
  74     /* jDc: in current opaque implementation the damaged regions are added to
  75     ** window's internal damage list and matched against actual damage here
  76     */
  77
  78     if (IW(window)->specialflags & SPFLAG_WANTBUFFER) mode = DOUBLEBUFFER;
  79
  80     /* I don't think I ever have to update the BorderRPort's layer */
  81     if (!BeginUpdate(WLAYER(window)))
  82     {
  83         EndUpdate(WLAYER(window), FALSE);
  84
  85         //dprintf("%s :BeginUpdate returned FALSE!->Aborting BeginUpdate()\n",__FUNCTION__);
  86         return;
  87     }
  88
  89     /* jDc: because with opaque move window borders/gadgets are not refreshed to
  90     ** speed things up we do this here - this reduces cpu time spent in inputhandler
  91     */
  92
  93     /* let the user know that we're currently doing a refresh */
  94     AROS_ATOMIC_OR(window->Flags, WFLG_WINDOWREFRESH);
  95
  96     AROS_LIBFUNC_EXIT
  97 } /* BeginRefresh */