SDL_resize.c
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/*
SDL - Simple DirectMedia Layer
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Copyright (C) 1997-2012 Sam Lantinga
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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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
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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Sam Lantinga
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slouken@libsdl.org
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*/
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#include "SDL_config.h"
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/* Resize event handling code for SDL */
#include "SDL_events.h"
#include "SDL_events_c.h"
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#include "../video/SDL_sysvideo.h"
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/* 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 */
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if ( !w || !h ||
(( last_resize.w == w ) && ( last_resize.h == h )) ||
!SDL_VideoSurface ) {
return(0);
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}
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last_resize.w = w;
last_resize.h = h;
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/* 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);
}