SDL_resize.c
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/*
SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2004 Sam Lantinga
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This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Sam Lantinga
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slouken@libsdl.org
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*/
#ifdef SAVE_RCSID
static char rcsid =
"@(#) $Id$";
#endif
/* Resize event handling code for SDL */
#include "SDL_events.h"
#include "SDL_events_c.h"
#include "SDL_sysvideo.h"
/* Keep the last resize event so we don't post duplicates */
static struct {
int w;
int h;
} last_resize;
/* This is global for SDL_eventloop.c */
int SDL_PrivateResize(int w, int h)
{
int posted;
SDL_Event events[32];
/* See if this event would change the video surface */
if ( !w || !h ||
((last_resize.w == w) && (last_resize.h == h)) ) {
return(0);
}
last_resize.w = w;
last_resize.h = h;
if ( ! SDL_VideoSurface ||
((w == SDL_VideoSurface->w) && (h == SDL_VideoSurface->h)) ) {
return(0);
}
/* Pull out all old resize events */
SDL_PeepEvents(events, sizeof(events)/sizeof(events[0]),
SDL_GETEVENT, SDL_VIDEORESIZEMASK);
/* Post the event, if desired */
posted = 0;
if ( SDL_ProcessEvents[SDL_VIDEORESIZE] == SDL_ENABLE ) {
SDL_Event event;
event.type = SDL_VIDEORESIZE;
event.resize.w = w;
event.resize.h = h;
if ( (SDL_EventOK == NULL) || (*SDL_EventOK)(&event) ) {
posted = 1;
SDL_PushEvent(&event);
}
}
return(posted);
}