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      1 /*
      2     SDL - Simple DirectMedia Layer
      3     Copyright (C) 1997-2012 Sam Lantinga
      4 
      5     This library is free software; you can redistribute it and/or
      6     modify it under the terms of the GNU Lesser General Public
      7     License as published by the Free Software Foundation; either
      8     version 2.1 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     Lesser General Public License for more details.
     14 
     15     You should have received a copy of the GNU Lesser General Public
     16     License along with this library; if not, write to the Free Software
     17     Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
     18 
     19     Sam Lantinga
     20     slouken (at) libsdl.org
     21 */
     22 #include "SDL_config.h"
     23 
     24 /* Refresh event handling code for SDL */
     25 
     26 #include "SDL_events.h"
     27 #include "SDL_events_c.h"
     28 
     29 
     30 /* This is global for SDL_eventloop.c */
     31 int SDL_PrivateExpose(void)
     32 {
     33 	int posted;
     34 	SDL_Event events[32];
     35 
     36 	/* Pull out all old refresh events */
     37 	SDL_PeepEvents(events, sizeof(events)/sizeof(events[0]),
     38 	                    SDL_GETEVENT, SDL_VIDEOEXPOSEMASK);
     39 
     40 	/* Post the event, if desired */
     41 	posted = 0;
     42 	if ( SDL_ProcessEvents[SDL_VIDEOEXPOSE] == SDL_ENABLE ) {
     43 		SDL_Event event;
     44 		event.type = SDL_VIDEOEXPOSE;
     45 		if ( (SDL_EventOK == NULL) || (*SDL_EventOK)(&event) ) {
     46 			posted = 1;
     47 			SDL_PushEvent(&event);
     48 		}
     49 	}
     50 	return(posted);
     51 }
     52