annotate src/events/SDL_resize.c @ 3958:85b6fb6a5e3c SDL-1.2

Actually, this is a better fix...clear the error state once if everything we need loaded; it's more efficient, and works even if the last unnecessary xrandr symbol failed to load. Otherwise, leave the original loadso error, so the end user can find out what symbol failed.
author Ryan C. Gordon <icculus@icculus.org>
date Wed, 13 Jun 2007 08:00:10 +0000
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children a1b03ba2fcd0
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 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 Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 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 Lesser 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 Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 /* Resize event handling code for SDL */
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25
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26 #include "SDL_events.h"
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27 #include "SDL_events_c.h"
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28 #include "../video/SDL_sysvideo.h"
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30
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31 /* Keep the last resize event so we don't post duplicates */
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32 static struct {
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33 int w;
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34 int h;
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35 } last_resize;
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36
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37 /* This is global for SDL_eventloop.c */
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38 int SDL_PrivateResize(int w, int h)
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39 {
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40 int posted;
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41 SDL_Event events[32];
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42
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43 /* See if this event would change the video surface */
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44 if ( !w || !h
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45 #ifndef __OS2__
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46 || ((last_resize.w == w) && (last_resize.h == h))
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47 #endif
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48 ) {
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49 return(0);
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50 }
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51 last_resize.w = w;
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52 last_resize.h = h;
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53 if ( ! SDL_VideoSurface ||
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54 ((w == SDL_VideoSurface->w) && (h == SDL_VideoSurface->h)) ) {
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55 return(0);
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56 }
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57
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58 /* Pull out all old resize events */
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59 SDL_PeepEvents(events, sizeof(events)/sizeof(events[0]),
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60 SDL_GETEVENT, SDL_VIDEORESIZEMASK);
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61
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62 /* Post the event, if desired */
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63 posted = 0;
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64 if ( SDL_ProcessEvents[SDL_VIDEORESIZE] == SDL_ENABLE ) {
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65 SDL_Event event;
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66 event.type = SDL_VIDEORESIZE;
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67 event.resize.w = w;
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68 event.resize.h = h;
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69 if ( (SDL_EventOK == NULL) || (*SDL_EventOK)(&event) ) {
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70 posted = 1;
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71 SDL_PushEvent(&event);
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72 }
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73 }
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74 return(posted);
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75 }