Mercurial > sdl-ios-xcode
annotate include/SDL_syswm.h @ 1157:baf35853ad54
Date: Mon, 10 Oct 2005 13:09:32 +0300
From: Tommi Kyntola <tommi.kyntola@ray.fi>
To: sdl@libsdl.org
Subject: [SDL] [RFC] get_ticks broken on linux
It uses gettimeofday to calculate the timedifference.
Gettimeofday returns current time which is seldom monotonous.
This breaks SDL timer subsystem. (time callbacks and all that
get borked when the time difference ms is suddenly ~ 2^32)
I posted a message about this earlier but got no response.
Some thoughts on this matter would be appreciated.
(Or even an explanation for the lack of interest.)
A patch below would use the posix timers that have been around
since posix 93 and do provide a good source of monotonous time
on linux boxes (and on few others too).
The following patch is also availabe at:
http://www.hut.fi/u/tkyntola/SDL-1.2.9-clockfix.patch
It's against 1.2.9, but I can easily rediffit against
the cvs branch is needed.
cheers,
Tommi Kyntola tommi.kyntola@ray.fi
| author | Ryan C. Gordon <icculus@icculus.org> |
|---|---|
| date | Tue, 11 Oct 2005 18:16:12 +0000 |
| parents | 609c060fd2a2 |
| children | c9b51268668f |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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3 Copyright (C) 1997-2004 Sam Lantinga |
| 0 | 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 | |
|
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
| 28 /* Include file for SDL custom system window manager hooks */ | |
| 29 | |
| 30 #ifndef _SDL_syswm_h | |
| 31 #define _SDL_syswm_h | |
| 32 | |
| 33 #include "SDL_version.h" | |
| 34 | |
| 35 #include "begin_code.h" | |
| 36 /* Set up for C function definitions, even when using C++ */ | |
| 37 #ifdef __cplusplus | |
| 38 extern "C" { | |
| 39 #endif | |
| 40 | |
| 41 /* Your application has access to a special type of event 'SDL_SYSWMEVENT', | |
| 42 which contains window-manager specific information and arrives whenever | |
| 43 an unhandled window event occurs. This event is ignored by default, but | |
| 44 you can enable it with SDL_EventState() | |
| 45 */ | |
| 46 #ifdef SDL_PROTOTYPES_ONLY | |
| 47 struct SDL_SysWMinfo; | |
| 48 typedef struct SDL_SysWMinfo SDL_SysWMinfo; | |
| 49 #else | |
| 50 | |
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51 #if defined(__APPLE__) && defined(__MACH__) |
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52 // conflicts with Quickdraw.h |
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53 #define Cursor X11Cursor |
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54 #endif |
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55 |
| 0 | 56 /* This is the structure for custom window manager events */ |
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57 #if (defined(unix) || defined(__unix__) || defined(_AIX) || \ |
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58 defined(__OpenBSD__) || defined(__NetBSD__) || \ |
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59 (defined(__APPLE__) && defined(__MACH__))) && \ |
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60 (!defined(DISABLE_X11) && !defined(__CYGWIN32__) && !defined(ENABLE_NANOX) && \ |
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61 !defined(__QNXNTO__)) |
| 0 | 62 /* AIX is unix, of course, but the native compiler CSet doesn't define unix */ |
| 63 #include <X11/Xlib.h> | |
| 64 #include <X11/Xatom.h> | |
| 65 | |
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66 #if defined(__APPLE__) && defined(__MACH__) |
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67 // matches the re-define above |
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68 #undef Cursor |
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69 #endif |
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70 |
| 0 | 71 /* These are the various supported subsystems under UNIX */ |
| 72 typedef enum { | |
| 73 SDL_SYSWM_X11 | |
| 74 } SDL_SYSWM_TYPE; | |
| 75 | |
| 76 /* The UNIX custom event structure */ | |
| 77 struct SDL_SysWMmsg { | |
| 78 SDL_version version; | |
| 79 SDL_SYSWM_TYPE subsystem; | |
| 80 union { | |
| 81 XEvent xevent; | |
| 82 } event; | |
| 83 }; | |
| 84 | |
| 85 /* The UNIX custom window manager information structure. | |
| 86 When this structure is returned, it holds information about which | |
| 87 low level system it is using, and will be one of SDL_SYSWM_TYPE. | |
| 88 */ | |
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89 typedef struct SDL_SysWMinfo { |
| 0 | 90 SDL_version version; |
| 91 SDL_SYSWM_TYPE subsystem; | |
| 92 union { | |
| 93 struct { | |
| 94 Display *display; /* The X11 display */ | |
| 95 Window window; /* The X11 display window */ | |
| 96 /* These locking functions should be called around | |
| 97 any X11 functions using the display variable. | |
| 98 They lock the event thread, so should not be | |
| 99 called around event functions or from event filters. | |
| 100 */ | |
| 101 void (*lock_func)(void); | |
| 102 void (*unlock_func)(void); | |
| 103 | |
| 104 /* Introduced in SDL 1.0.2 */ | |
| 105 Window fswindow; /* The X11 fullscreen window */ | |
| 106 Window wmwindow; /* The X11 managed input window */ | |
| 107 } x11; | |
| 108 } info; | |
| 109 } SDL_SysWMinfo; | |
| 110 | |
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111 #elif defined(ENABLE_NANOX) |
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112 #include <microwin/nano-X.h> |
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113 |
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114 /* The generic custom event structure */ |
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115 struct SDL_SysWMmsg { |
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116 SDL_version version; |
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117 int data; |
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118 }; |
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119 |
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120 /* The windows custom window manager information structure */ |
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121 typedef struct SDL_SysWMinfo { |
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122 SDL_version version ; |
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123 GR_WINDOW_ID window ; /* The display window */ |
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124 } SDL_SysWMinfo; |
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125 |
| 0 | 126 #elif defined(WIN32) |
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127 #define WIN32_LEAN_AND_MEAN |
| 0 | 128 #include <windows.h> |
| 129 | |
| 130 /* The windows custom event structure */ | |
| 131 struct SDL_SysWMmsg { | |
| 132 SDL_version version; | |
| 133 HWND hwnd; /* The window for the message */ | |
| 134 UINT msg; /* The type of message */ | |
| 135 WPARAM wParam; /* WORD message parameter */ | |
| 136 LPARAM lParam; /* LONG message parameter */ | |
| 137 }; | |
| 138 | |
| 139 /* The windows custom window manager information structure */ | |
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140 typedef struct SDL_SysWMinfo { |
| 0 | 141 SDL_version version; |
| 142 HWND window; /* The Win32 display window */ | |
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143 HGLRC hglrc; /* The OpenGL context, if any */ |
| 0 | 144 } SDL_SysWMinfo; |
| 145 | |
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146 #elif defined(__riscos__) |
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147 |
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148 /* RISC OS custom event structure */ |
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149 struct SDL_SysWMmsg { |
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150 SDL_version version; |
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151 int eventCode; /* The window for the message */ |
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152 int pollBlock[64]; |
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153 }; |
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154 |
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155 /* The RISC OS custom window manager information structure */ |
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156 typedef struct SDL_SysWMinfo { |
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157 SDL_version version; |
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158 int wimpVersion; /* Wimp version running under */ |
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159 int taskHandle; /* The RISC OS task handle */ |
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160 int window; /* The RISC OS display window */ |
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161 } SDL_SysWMinfo; |
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162 |
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163 #elif defined(__QNXNTO__) |
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164 #include <sys/neutrino.h> |
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165 #include <Ph.h> |
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166 |
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167 /* The QNX custom event structure */ |
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168 struct SDL_SysWMmsg { |
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169 SDL_version version; |
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170 int data; |
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171 }; |
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172 |
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173 /* The QNX custom window manager information structure */ |
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174 typedef struct SDL_SysWMinfo { |
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175 SDL_version version; |
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176 int data; |
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177 } SDL_SysWMinfo; |
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178 |
| 0 | 179 #else |
| 180 | |
| 181 /* The generic custom event structure */ | |
| 182 struct SDL_SysWMmsg { | |
| 183 SDL_version version; | |
| 184 int data; | |
| 185 }; | |
| 186 | |
| 187 /* The generic custom window manager information structure */ | |
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188 typedef struct SDL_SysWMinfo { |
| 0 | 189 SDL_version version; |
| 190 int data; | |
| 191 } SDL_SysWMinfo; | |
| 192 | |
| 193 #endif /* OS type */ | |
| 194 | |
| 195 #endif /* SDL_PROTOTYPES_ONLY */ | |
| 196 | |
| 197 /* Function prototypes */ | |
| 198 /* | |
| 199 * This function gives you custom hooks into the window manager information. | |
| 200 * It fills the structure pointed to by 'info' with custom information and | |
| 201 * returns 1 if the function is implemented. If it's not implemented, or | |
| 202 * the version member of the 'info' structure is invalid, it returns 0. | |
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203 * |
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204 * You typically use this function like this: |
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205 * SDL_SysWMInfo info; |
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206 * SDL_VERSION(&info.version); |
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207 * if ( SDL_GetWMInfo(&info) ) { ... } |
| 0 | 208 */ |
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209 extern DECLSPEC int SDLCALL SDL_GetWMInfo(SDL_SysWMinfo *info); |
| 0 | 210 |
| 211 | |
| 212 /* Ends C function definitions when using C++ */ | |
| 213 #ifdef __cplusplus | |
| 214 } | |
| 215 #endif | |
| 216 #include "close_code.h" | |
| 217 | |
| 218 #endif /* _SDL_syswm_h */ |