annotate src/events/SDL_resize.c @ 1199:2d6dc7de1145

From: Mike Frysinger <vapier@gentoo.org> To: sdl@libsdl.org Date: Sun, 11 Dec 2005 22:57:37 -0500 Subject: [SDL] exec stack in libsdl update i posted back in September a patch to remove executable stacks: http://www.devolution.com/pipermail/sdl/2005-September/070626.html later in November, a similar patch was merged it seems: http://www.libsdl.org/cgi/cvsweb.cgi/SDL12/src/hermes/mmx_main.asm however, this lacks the additional output format checks that i posted in my patch ... this isnt a problem if the hermes asm code is only ever used to produce ELF objects, but if this is not true, then the additional checks in my original patch will need to be merged -mike
author Ryan C. Gordon <icculus@icculus.org>
date Mon, 12 Dec 2005 09:13:12 +0000
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2004 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@libsdl.org
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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 #ifndef __OS2__
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50 || ((last_resize.w == w) && (last_resize.h == h))
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51 #endif
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52 ) {
0
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53 return(0);
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54 }
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55 last_resize.w = w;
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56 last_resize.h = h;
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57 if ( ! SDL_VideoSurface ||
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58 ((w == SDL_VideoSurface->w) && (h == SDL_VideoSurface->h)) ) {
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59 return(0);
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60 }
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61
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62 /* Pull out all old resize events */
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63 SDL_PeepEvents(events, sizeof(events)/sizeof(events[0]),
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64 SDL_GETEVENT, SDL_VIDEORESIZEMASK);
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65
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66 /* Post the event, if desired */
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67 posted = 0;
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68 if ( SDL_ProcessEvents[SDL_VIDEORESIZE] == SDL_ENABLE ) {
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69 SDL_Event event;
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70 event.type = SDL_VIDEORESIZE;
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71 event.resize.w = w;
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72 event.resize.h = h;
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73 if ( (SDL_EventOK == NULL) || (*SDL_EventOK)(&event) ) {
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74 posted = 1;
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75 SDL_PushEvent(&event);
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76 }
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77 }
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78 return(posted);
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79 }