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annotate src/video/x11/SDL_x11dga.c @ 1790:828a17e05192

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Date: Mon, 8 May 2006 14:19:30 -0700 From: Bob Ippolito Subject: SDL trunk (r2346) and Mac OS X The current state of the trunk doesn't quite compile on Mac OS X, I've attached a series of patches that gets it to compile and kills a few warnings. sdl-trunk-r2346-dlcompat-warnings.diff: The dlcompat thing is just loaded with incorrect type signatures .. some of them have changed since 10.2 and others are just flat wrong. This puts it in sync with the latest headers. People on 10.2 will get the warnings instead of people with new kits.
author Sam Lantinga <slouken@libsdl.org>
date Tue, 09 May 2006 07:26:58 +0000 (2006-05-09)
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children 782fd950bd46 c121d94672cb cbad710a6509
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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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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 #include "SDL_config.h"
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23
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24 /* This is currently only used to enable DGA mouse.
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25 The new fullscreen code makes it very difficult to handle DGA dynamically.
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26 There will be a completely separate DGA driver that is fullscreen-only.
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27 */
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28
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29 #include "SDL_video.h"
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30 #include "../SDL_cursor_c.h"
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31 #include "SDL_x11dga_c.h"
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32
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33 /* Global for the error handler */
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34 int dga_event, dga_error = -1;
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35
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36 void X11_EnableDGAMouse(_THIS)
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37 {
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38 #if SDL_VIDEO_DRIVER_X11_DGAMOUSE
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39 int dga_major, dga_minor;
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40 int use_dgamouse;
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41 const char *env_use_dgamouse;
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42
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43 /* Check configuration to see if we should use DGA mouse */
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44 use_dgamouse = 1;
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45 env_use_dgamouse = SDL_getenv("SDL_VIDEO_X11_DGAMOUSE");
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46 if ( env_use_dgamouse ) {
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47 use_dgamouse = atoi(env_use_dgamouse);
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48 }
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49 /* Check for buggy X servers */
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50 if ( use_dgamouse && BUGGY_XFREE86(==, 4000) ) {
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51 use_dgamouse = 0;
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52 }
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53 /* Only use DGA mouse if the cursor is not showing (in relative mode) */
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54 if ( use_dgamouse && local_X11 && !(using_dga & DGA_MOUSE) &&
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55 SDL_NAME(XF86DGAQueryExtension)(SDL_Display, &dga_event, &dga_error) &&
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56 SDL_NAME(XF86DGAQueryVersion)(SDL_Display, &dga_major, &dga_minor) ) {
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57 if ( SDL_NAME(XF86DGADirectVideo)(SDL_Display, SDL_Screen, XF86DGADirectMouse) ) {
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58 using_dga |= DGA_MOUSE;
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59 }
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60 }
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61 #endif /* SDL_VIDEO_DRIVER_X11_DGAMOUSE */
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62 }
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63
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64 /* Argh. Glide resets DGA mouse mode when it makes the context current! */
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65 void X11_CheckDGAMouse(_THIS)
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66 {
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67 #if SDL_VIDEO_DRIVER_X11_DGAMOUSE
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68 int flags;
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69
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70 if ( using_dga & DGA_MOUSE ) {
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71 SDL_NAME(XF86DGAQueryDirectVideo)(SDL_Display, SDL_Screen, &flags);
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72 if ( ! (flags & XF86DGADirectMouse) ) {
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73 SDL_NAME(XF86DGADirectVideo)(SDL_Display,SDL_Screen,XF86DGADirectMouse);
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74 }
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75 }
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76 #endif
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77 }
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78
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79 void X11_DisableDGAMouse(_THIS)
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80 {
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81 #if SDL_VIDEO_DRIVER_X11_DGAMOUSE
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82 if ( using_dga & DGA_MOUSE ) {
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83 SDL_NAME(XF86DGADirectVideo)(SDL_Display, SDL_Screen, 0);
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84 using_dga &= ~DGA_MOUSE;
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85 }
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86 #endif /* SDL_VIDEO_DRIVER_X11_DGAMOUSE */
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87 }