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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Library General Public License for more details.
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14
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15 You should have received a copy of the GNU Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 Sam Lantinga
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20 slouken@devolution.com
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21 */
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22
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23 #ifdef SAVE_RCSID
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24 static char rcsid =
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25 "@(#) $Id$";
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26 #endif
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27
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28 /* Resize event handling code for SDL */
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29
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30 #include "SDL_events.h"
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31 #include "SDL_events_c.h"
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32 #include "SDL_sysvideo.h"
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33
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34
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35 /* Keep the last resize event so we don't post duplicates */
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36 static struct {
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37 int w;
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38 int h;
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39 } last_resize;
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40
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41 /* This is global for SDL_eventloop.c */
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42 int SDL_PrivateResize(int w, int h)
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43 {
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44 int posted;
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45 SDL_Event events[32];
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46
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47 /* See if this event would change the video surface */
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48 if ( !w || !h ||
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49 ((last_resize.w == w) && (last_resize.h == h)) ) {
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50 return(0);
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51 }
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52 last_resize.w = w;
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53 last_resize.h = h;
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54 if ( ! SDL_VideoSurface ||
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55 ((w == SDL_VideoSurface->w) && (h == SDL_VideoSurface->h)) ) {
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56 return(0);
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57 }
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58
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59 /* Pull out all old resize events */
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60 SDL_PeepEvents(events, sizeof(events)/sizeof(events[0]),
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61 SDL_GETEVENT, SDL_VIDEORESIZEMASK);
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62
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63 /* Post the event, if desired */
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64 posted = 0;
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65 if ( SDL_ProcessEvents[SDL_VIDEORESIZE] == SDL_ENABLE ) {
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66 SDL_Event event;
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67 event.type = SDL_VIDEORESIZE;
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68 event.resize.w = w;
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69 event.resize.h = h;
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70 if ( (SDL_EventOK == NULL) || (*SDL_EventOK)(&event) ) {
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71 posted = 1;
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72 SDL_PushEvent(&event);
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73 }
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74 }
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75 return(posted);
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76 }
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