Mercurial > sdl-ios-xcode
annotate src/SDL.c @ 3896:1a327643e741 SDL-1.2
X11 backend: tell app that mouse focus has been obtained when grabbing the
input. This allows us to enable DGA mode, even when the system cursor was
outside of the window when the grab was initiated.
Fixes Bugzilla #299, which has a more detailed explanation of the issue.
| author | Ryan C. Gordon <icculus@icculus.org> |
|---|---|
| date | Mon, 13 Nov 2006 03:58:22 +0000 |
| parents | dc6b59e925a2 |
| children | 782fd950bd46 c121d94672cb e85e65aec22f |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
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3 Copyright (C) 1997-2006 Sam Lantinga |
| 0 | 4 |
| 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 |
| 0 | 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. |
| 0 | 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 | |
|
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13 Lesser General Public License for more details. |
| 0 | 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 |
| 0 | 18 |
| 19 Sam Lantinga | |
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20 slouken@libsdl.org |
| 0 | 21 */ |
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22 #include "SDL_config.h" |
| 0 | 23 |
| 24 /* Initialization code for SDL */ | |
| 25 | |
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26 #include "SDL.h" |
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27 #include "SDL_fatal.h" |
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28 #if !SDL_VIDEO_DISABLED |
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29 #include "video/SDL_leaks.h" |
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30 #endif |
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31 |
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32 #if SDL_THREAD_PTH |
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33 #include <pth.h> |
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34 #endif |
| 0 | 35 |
| 36 /* Initialization/Cleanup routines */ | |
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37 #if !SDL_JOYSTICK_DISABLED |
| 0 | 38 extern int SDL_JoystickInit(void); |
| 39 extern void SDL_JoystickQuit(void); | |
| 40 #endif | |
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41 #if !SDL_CDROM_DISABLED |
| 0 | 42 extern int SDL_CDROMInit(void); |
| 43 extern void SDL_CDROMQuit(void); | |
| 44 #endif | |
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45 #if !SDL_TIMERS_DISABLED |
| 0 | 46 extern void SDL_StartTicks(void); |
| 47 extern int SDL_TimerInit(void); | |
| 48 extern void SDL_TimerQuit(void); | |
| 49 #endif | |
| 50 | |
| 51 /* The current SDL version */ | |
| 52 static SDL_version version = | |
| 53 { SDL_MAJOR_VERSION, SDL_MINOR_VERSION, SDL_PATCHLEVEL }; | |
| 54 | |
| 55 /* The initialized subsystems */ | |
| 56 static Uint32 SDL_initialized = 0; | |
| 57 static Uint32 ticks_started = 0; | |
| 58 | |
| 59 #ifdef CHECK_LEAKS | |
| 60 int surfaces_allocated = 0; | |
| 61 #endif | |
| 62 | |
| 63 int SDL_InitSubSystem(Uint32 flags) | |
| 64 { | |
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65 #if !SDL_VIDEO_DISABLED |
| 0 | 66 /* Initialize the video/event subsystem */ |
| 67 if ( (flags & SDL_INIT_VIDEO) && !(SDL_initialized & SDL_INIT_VIDEO) ) { | |
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68 if ( SDL_VideoInit(SDL_getenv("SDL_VIDEODRIVER"), |
| 0 | 69 (flags&SDL_INIT_EVENTTHREAD)) < 0 ) { |
| 70 return(-1); | |
| 71 } | |
| 72 SDL_initialized |= SDL_INIT_VIDEO; | |
| 73 } | |
| 74 #else | |
| 75 if ( flags & SDL_INIT_VIDEO ) { | |
| 76 SDL_SetError("SDL not built with video support"); | |
| 77 return(-1); | |
| 78 } | |
| 79 #endif | |
| 80 | |
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81 #if !SDL_AUDIO_DISABLED |
| 0 | 82 /* Initialize the audio subsystem */ |
| 83 if ( (flags & SDL_INIT_AUDIO) && !(SDL_initialized & SDL_INIT_AUDIO) ) { | |
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84 if ( SDL_AudioInit(SDL_getenv("SDL_AUDIODRIVER")) < 0 ) { |
| 0 | 85 return(-1); |
| 86 } | |
| 87 SDL_initialized |= SDL_INIT_AUDIO; | |
| 88 } | |
| 89 #else | |
| 90 if ( flags & SDL_INIT_AUDIO ) { | |
| 91 SDL_SetError("SDL not built with audio support"); | |
| 92 return(-1); | |
| 93 } | |
| 94 #endif | |
| 95 | |
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96 #if !SDL_TIMERS_DISABLED |
| 0 | 97 /* Initialize the timer subsystem */ |
| 98 if ( ! ticks_started ) { | |
| 99 SDL_StartTicks(); | |
| 100 ticks_started = 1; | |
| 101 } | |
| 102 if ( (flags & SDL_INIT_TIMER) && !(SDL_initialized & SDL_INIT_TIMER) ) { | |
| 103 if ( SDL_TimerInit() < 0 ) { | |
| 104 return(-1); | |
| 105 } | |
| 106 SDL_initialized |= SDL_INIT_TIMER; | |
| 107 } | |
| 108 #else | |
| 109 if ( flags & SDL_INIT_TIMER ) { | |
| 110 SDL_SetError("SDL not built with timer support"); | |
| 111 return(-1); | |
| 112 } | |
| 113 #endif | |
| 114 | |
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115 #if !SDL_JOYSTICK_DISABLED |
| 0 | 116 /* Initialize the joystick subsystem */ |
| 117 if ( (flags & SDL_INIT_JOYSTICK) && | |
| 118 !(SDL_initialized & SDL_INIT_JOYSTICK) ) { | |
| 119 if ( SDL_JoystickInit() < 0 ) { | |
| 120 return(-1); | |
| 121 } | |
| 122 SDL_initialized |= SDL_INIT_JOYSTICK; | |
| 123 } | |
| 124 #else | |
| 125 if ( flags & SDL_INIT_JOYSTICK ) { | |
| 126 SDL_SetError("SDL not built with joystick support"); | |
| 127 return(-1); | |
| 128 } | |
| 129 #endif | |
| 130 | |
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131 #if !SDL_CDROM_DISABLED |
| 0 | 132 /* Initialize the CD-ROM subsystem */ |
| 133 if ( (flags & SDL_INIT_CDROM) && !(SDL_initialized & SDL_INIT_CDROM) ) { | |
| 134 if ( SDL_CDROMInit() < 0 ) { | |
| 135 return(-1); | |
| 136 } | |
| 137 SDL_initialized |= SDL_INIT_CDROM; | |
| 138 } | |
| 139 #else | |
| 140 if ( flags & SDL_INIT_CDROM ) { | |
| 141 SDL_SetError("SDL not built with cdrom support"); | |
| 142 return(-1); | |
| 143 } | |
| 144 #endif | |
| 145 return(0); | |
| 146 } | |
| 147 | |
| 148 int SDL_Init(Uint32 flags) | |
| 149 { | |
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150 #if !SDL_THREADS_DISABLED && SDL_THREAD_PTH |
| 397 | 151 if (!pth_init()) { |
| 152 return -1; | |
| 153 } | |
| 154 #endif | |
| 155 | |
| 0 | 156 /* Clear the error message */ |
| 157 SDL_ClearError(); | |
| 158 | |
| 159 /* Initialize the desired subsystems */ | |
| 160 if ( SDL_InitSubSystem(flags) < 0 ) { | |
| 161 return(-1); | |
| 162 } | |
| 163 | |
| 164 /* Everything is initialized */ | |
| 165 if ( !(flags & SDL_INIT_NOPARACHUTE) ) { | |
| 166 SDL_InstallParachute(); | |
| 167 } | |
| 168 return(0); | |
| 169 } | |
| 170 | |
| 171 void SDL_QuitSubSystem(Uint32 flags) | |
| 172 { | |
| 173 /* Shut down requested initialized subsystems */ | |
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174 #if !SDL_CDROM_DISABLED |
| 0 | 175 if ( (flags & SDL_initialized & SDL_INIT_CDROM) ) { |
| 176 SDL_CDROMQuit(); | |
| 177 SDL_initialized &= ~SDL_INIT_CDROM; | |
| 178 } | |
| 179 #endif | |
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180 #if !SDL_JOYSTICK_DISABLED |
| 0 | 181 if ( (flags & SDL_initialized & SDL_INIT_JOYSTICK) ) { |
| 182 SDL_JoystickQuit(); | |
| 183 SDL_initialized &= ~SDL_INIT_JOYSTICK; | |
| 184 } | |
| 185 #endif | |
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186 #if !SDL_TIMERS_DISABLED |
| 0 | 187 if ( (flags & SDL_initialized & SDL_INIT_TIMER) ) { |
| 188 SDL_TimerQuit(); | |
| 189 SDL_initialized &= ~SDL_INIT_TIMER; | |
| 190 } | |
| 191 #endif | |
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192 #if !SDL_AUDIO_DISABLED |
| 0 | 193 if ( (flags & SDL_initialized & SDL_INIT_AUDIO) ) { |
| 194 SDL_AudioQuit(); | |
| 195 SDL_initialized &= ~SDL_INIT_AUDIO; | |
| 196 } | |
| 197 #endif | |
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198 #if !SDL_VIDEO_DISABLED |
| 0 | 199 if ( (flags & SDL_initialized & SDL_INIT_VIDEO) ) { |
| 200 SDL_VideoQuit(); | |
| 201 SDL_initialized &= ~SDL_INIT_VIDEO; | |
| 202 } | |
| 203 #endif | |
| 204 } | |
| 205 | |
| 206 Uint32 SDL_WasInit(Uint32 flags) | |
| 207 { | |
| 208 if ( ! flags ) { | |
| 209 flags = SDL_INIT_EVERYTHING; | |
| 210 } | |
| 211 return (SDL_initialized&flags); | |
| 212 } | |
| 213 | |
| 214 void SDL_Quit(void) | |
| 215 { | |
| 216 /* Quit all subsystems */ | |
| 1190 | 217 #ifdef DEBUG_BUILD |
| 218 printf("[SDL_Quit] : Enter! Calling QuitSubSystem()\n"); fflush(stdout); | |
| 219 #endif | |
| 0 | 220 SDL_QuitSubSystem(SDL_INIT_EVERYTHING); |
| 221 | |
| 222 #ifdef CHECK_LEAKS | |
| 1190 | 223 #ifdef DEBUG_BUILD |
| 224 printf("[SDL_Quit] : CHECK_LEAKS\n"); fflush(stdout); | |
| 225 #endif | |
| 226 | |
| 0 | 227 /* Print the number of surfaces not freed */ |
| 228 if ( surfaces_allocated != 0 ) { | |
| 229 fprintf(stderr, "SDL Warning: %d SDL surfaces extant\n", | |
| 230 surfaces_allocated); | |
| 231 } | |
| 232 #endif | |
| 1190 | 233 #ifdef DEBUG_BUILD |
| 234 printf("[SDL_Quit] : SDL_UninstallParachute()\n"); fflush(stdout); | |
| 235 #endif | |
| 0 | 236 |
| 237 /* Uninstall any parachute signal handlers */ | |
| 238 SDL_UninstallParachute(); | |
| 397 | 239 |
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240 #if !SDL_THREADS_DISABLED && SDL_THREAD_PTH |
| 397 | 241 pth_kill(); |
| 242 #endif | |
| 1190 | 243 #ifdef DEBUG_BUILD |
| 244 printf("[SDL_Quit] : Returning!\n"); fflush(stdout); | |
| 245 #endif | |
| 246 | |
| 0 | 247 } |
| 248 | |
| 249 /* Return the library version number */ | |
| 250 const SDL_version * SDL_Linked_Version(void) | |
| 251 { | |
| 252 return(&version); | |
| 253 } | |
| 254 | |
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255 #if defined(__OS2__) |
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256 /* Building for OS/2 */ |
| 1190 | 257 #ifdef __WATCOMC__ |
| 258 | |
| 259 #define INCL_DOSERRORS | |
| 260 #define INCL_DOSEXCEPTIONS | |
| 261 #include <os2.h> | |
| 262 | |
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263 /* Exception handler to prevent the Audio thread hanging, making a zombie process! */ |
| 1190 | 264 ULONG _System SDL_Main_ExceptionHandler(PEXCEPTIONREPORTRECORD pERepRec, |
| 265 PEXCEPTIONREGISTRATIONRECORD pERegRec, | |
| 266 PCONTEXTRECORD pCtxRec, | |
| 267 PVOID p) | |
| 268 { | |
| 269 if (pERepRec->fHandlerFlags & EH_EXIT_UNWIND) | |
| 270 return XCPT_CONTINUE_SEARCH; | |
| 271 if (pERepRec->fHandlerFlags & EH_UNWINDING) | |
| 272 return XCPT_CONTINUE_SEARCH; | |
| 273 if (pERepRec->fHandlerFlags & EH_NESTED_CALL) | |
| 274 return XCPT_CONTINUE_SEARCH; | |
| 275 | |
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276 /* Do cleanup at every fatal exception! */ |
| 1190 | 277 if (((pERepRec->ExceptionNum & XCPT_SEVERITY_CODE) == XCPT_FATAL_EXCEPTION) && |
| 278 (pERepRec->ExceptionNum != XCPT_BREAKPOINT) && | |
| 279 (pERepRec->ExceptionNum != XCPT_SINGLE_STEP) | |
| 280 ) | |
| 281 { | |
| 282 if (SDL_initialized & SDL_INIT_AUDIO) | |
| 283 { | |
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284 /* This removes the zombie audio thread in case of emergency. */ |
| 1190 | 285 #ifdef DEBUG_BUILD |
| 286 printf("[SDL_Main_ExceptionHandler] : Calling SDL_CloseAudio()!\n"); | |
| 287 #endif | |
| 288 SDL_CloseAudio(); | |
| 289 } | |
| 290 } | |
| 291 return (XCPT_CONTINUE_SEARCH); | |
| 292 } | |
| 293 | |
| 294 | |
| 295 EXCEPTIONREGISTRATIONRECORD SDL_Main_xcpthand = {0, SDL_Main_ExceptionHandler}; | |
| 296 | |
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297 /* The main DLL entry for DLL Initialization and Uninitialization: */ |
| 1190 | 298 unsigned _System LibMain(unsigned hmod, unsigned termination) |
| 299 { | |
| 300 if (termination) | |
| 301 { | |
| 302 #ifdef DEBUG_BUILD | |
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303 /* printf("[SDL DLL Unintialization] : Removing exception handler\n"); */ |
| 1190 | 304 #endif |
| 305 DosUnsetExceptionHandler(&SDL_Main_xcpthand); | |
| 306 return 1; | |
| 307 } else | |
| 308 { | |
| 309 #ifdef DEBUG_BUILD | |
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310 /* Make stdout and stderr unbuffered! */ |
| 1190 | 311 setbuf(stdout, NULL); |
| 312 setbuf(stderr, NULL); | |
| 313 #endif | |
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314 /* Fire up exception handler */ |
| 1190 | 315 #ifdef DEBUG_BUILD |
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316 /* printf("[SDL DLL Initialization] : Setting exception handler\n"); */ |
| 1190 | 317 #endif |
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318 /* Set exception handler */ |
| 1190 | 319 DosSetExceptionHandler(&SDL_Main_xcpthand); |
| 320 | |
| 321 return 1; | |
| 322 } | |
| 323 } | |
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324 #endif /* __WATCOMC__ */ |
| 1190 | 325 |
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326 #elif defined(__WIN32__) |
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327 |
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328 #if !defined(HAVE_LIBC) || (defined(__WATCOMC__) && defined(BUILD_DLL)) |
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329 /* Need to include DllMain() on Watcom C for some reason.. */ |
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330 #define WIN32_LEAN_AND_MEAN |
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331 #include <windows.h> |
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332 |
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333 BOOL APIENTRY _DllMainCRTStartup( HANDLE hModule, |
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334 DWORD ul_reason_for_call, |
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335 LPVOID lpReserved ) |
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336 { |
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337 switch (ul_reason_for_call) { |
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338 case DLL_PROCESS_ATTACH: |
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339 case DLL_THREAD_ATTACH: |
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It's now possible to build SDL without any C runtime at all on Windows,
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340 case DLL_THREAD_DETACH: |
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341 case DLL_PROCESS_DETACH: |
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342 break; |
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343 } |
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344 return TRUE; |
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345 } |
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Updated WinCE support by Dmitry (with some tweaks)
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346 #endif /* building DLL with Watcom C */ |
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347 |
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Use consistent identifiers for the various platforms we support.
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348 #endif /* OS/2 elif __WIN32__ */ |