src/events/SDL_resize.c
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FUNCTIONS
This source file includes following functions.
- SDL_PrivateResize
1 /*
2 SDL - Simple DirectMedia Layer
3 Copyright (C) 1997, 1998, 1999, 2000, 2001 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@devolution.com
21 */
22
23 #ifdef SAVE_RCSID
24 static char rcsid =
25 "@(#) $Id: SDL_resize.c,v 1.1.2.3 2001/02/10 07:20:04 hercules Exp $";
26 #endif
27
28 /* Resize event handling code for SDL */
29
30 #include "SDL_events.h"
31 #include "SDL_events_c.h"
32 #include "SDL_sysvideo.h"
33
34
35 /* Keep the last resize event so we don't post duplicates */
36 static struct {
37 int w;
38 int h;
39 } last_resize;
40
41 /* This is global for SDL_eventloop.c */
42 int SDL_PrivateResize(int w, int h)
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43 {
44 int posted;
45 SDL_Event events[32];
46
47 /* See if this event would change the video surface */
48 if ( !w || !h ||
49 ((last_resize.w == w) && (last_resize.h == h)) ) {
50 return(0);
51 }
52 last_resize.w = w;
53 last_resize.h = h;
54 if ( ! SDL_VideoSurface ||
55 ((w == SDL_VideoSurface->w) && (h == SDL_VideoSurface->h)) ) {
56 return(0);
57 }
58
59 /* Pull out all old resize events */
60 SDL_PeepEvents(events, sizeof(events)/sizeof(events[0]),
61 SDL_GETEVENT, SDL_VIDEORESIZEMASK);
62
63 /* Post the event, if desired */
64 posted = 0;
65 if ( SDL_ProcessEvents[SDL_VIDEORESIZE] == SDL_ENABLE ) {
66 SDL_Event event;
67 event.type = SDL_VIDEORESIZE;
68 event.resize.w = w;
69 event.resize.h = h;
70 if ( (SDL_EventOK == NULL) || (*SDL_EventOK)(&event) ) {
71 posted = 1;
72 SDL_PushEvent(&event);
73 }
74 }
75 return(posted);
76 }