SDL/SDL_expose.c

   1 /*
   2     SDL - Simple DirectMedia Layer
   3     Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002  Sam Lantinga
   4
   5     This library is free software; you can redistribute it and/or
   6     modify it under the terms of the GNU Library General Public
   7     License as published by the Free Software Foundation; either
   8     version 2 of the License, or (at your option) any later version.
   9
  10     This library is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13     Library General Public License for more details.
  14
  15     You should have received a copy of the GNU Library General Public
  16     License along with this library; if not, write to the Free
  17     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  18
  19     Sam Lantinga
  20     slouken@libsdl.org
  21 */
  22
  23 #ifdef SAVE_RCSID
  24 static char rcsid =
  25  "@(#) $Id$";
  26 #endif
  27
  28 /* Refresh event handling code for SDL */
  29
  30 #include "SDL_events.h"
  31 #include "SDL_events_c.h"
  32
  33
  34 /* This is global for SDL_eventloop.c */
  35 int SDL_PrivateExpose(void)
  36 {
  37         int posted;
  38         SDL_Event events[32];
  39
  40         /* Pull out all old refresh events */
  41         SDL_PeepEvents(events, sizeof(events)/sizeof(events[0]),
  42                             SDL_GETEVENT, SDL_VIDEOEXPOSEMASK);
  43
  44         /* Post the event, if desired */
  45         posted = 0;
  46         if ( SDL_ProcessEvents[SDL_VIDEOEXPOSE] == SDL_ENABLE ) {
  47                 SDL_Event event;
  48                 event.type = SDL_VIDEOEXPOSE;
  49                 if ( (SDL_EventOK == NULL) || (*SDL_EventOK)(&event) ) {
  50                         posted = 1;
  51                         SDL_PushEvent(&event);
  52                 }
  53         }
  54         return(posted);
  55 }