src/events/SDL_resize.c
author Sam Lantinga
Mon, 06 Feb 2006 08:28:51 +0000
changeset 1330 450721ad5436
parent 1312 c9b51268668f
child 1361 19418e4422cb
permissions -rw-r--r--
It's now possible to build SDL without any C runtime at all on Windows,
using Visual C++ 2005
     1 /*
     2     SDL - Simple DirectMedia Layer
     3     Copyright (C) 1997-2006 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@libsdl.org
    21 */
    22 
    23 /* Resize event handling code for SDL */
    24 
    25 #include "SDL_events.h"
    26 #include "SDL_events_c.h"
    27 #include "SDL_sysvideo.h"
    28 
    29 
    30 /* Keep the last resize event so we don't post duplicates */
    31 static struct {
    32 	int w;
    33 	int h;
    34 } last_resize;
    35 
    36 /* This is global for SDL_eventloop.c */
    37 int SDL_PrivateResize(int w, int h)
    38 {
    39 	int posted;
    40 	SDL_Event events[32];
    41 
    42 	/* See if this event would change the video surface */
    43 	if ( !w || !h
    44 #ifndef __OS2__
    45             || ((last_resize.w == w) && (last_resize.h == h))
    46 #endif
    47     ) {
    48 		return(0);
    49 	}
    50         last_resize.w = w;
    51         last_resize.h = h;
    52 	if ( ! SDL_VideoSurface ||
    53 	     ((w == SDL_VideoSurface->w) && (h == SDL_VideoSurface->h)) ) {
    54 		return(0);
    55 	}
    56 
    57 	/* Pull out all old resize events */
    58 	SDL_PeepEvents(events, sizeof(events)/sizeof(events[0]),
    59 	                    SDL_GETEVENT, SDL_VIDEORESIZEMASK);
    60 
    61 	/* Post the event, if desired */
    62 	posted = 0;
    63 	if ( SDL_ProcessEvents[SDL_VIDEORESIZE] == SDL_ENABLE ) {
    64 		SDL_Event event;
    65 		event.type = SDL_VIDEORESIZE;
    66 		event.resize.w = w;
    67 		event.resize.h = h;
    68 		if ( (SDL_EventOK == NULL) || (*SDL_EventOK)(&event) ) {
    69 			posted = 1;
    70 			SDL_PushEvent(&event);
    71 		}
    72 	}
    73 	return(posted);
    74 }