Mercurial > sdl-ios-xcode
annotate src/events/SDL_events.c @ 1133:609c060fd2a2
The MacOSX Carbon/Cocoa/X11 all in one library patch. Relevant emails:
To: SDL Developers <sdl@libsdl.org>
From: =?ISO-8859-1?Q?Anders_F_Bj=F6rklund?= <afb@algonet.se>
Date: Mon, 30 May 2005 23:29:04 +0200
Subject: [SDL] Mac OS X Video Drivers [patch]
I've updated/added the Carbon and X11 video drivers
to the Mac OS X port of SDL 1.2 (the CVS version),
and made the Cocoa driver and runtime *optional*.
The default is still Cocoa, and the "Quartz" driver.
But you can now also use "toolbox" for Carbon, and
"x11" for running with Apple's (or other) X11 server:
export SDL_VIDEODRIVER=x11
export SDL_VIDEO_GL_DRIVER=/usr/X11R6/lib/libGL.dylib
It also checks if the frameworks are available, by a:
#include <Carbon/Carbon.h> or #import <Cocoa/Cocoa.h>
(this should make it configure on plain Darwin as well?)
Here are the new configure targets:
--enable-video-cocoa use Cocoa/Quartz video driver default=yes
--enable-video-carbon use Carbon/QuickDraw video driver default=yes
--enable-video-x11 use X11 video driver default=no
./configure --enable-video-cocoa --enable-video-carbon
--enable-video-x11 \
--x-includes=/usr/X11R6/include --x-libraries=/usr/X11R6/lib
The Carbon version is just an updated version of the old
SDL driver for Mac OS 9, and could probably be improved...
(but it does work, including the Carbon version of SDLmain)
If you disable cocoa, you can run with -framework Carbon only,
and the C version of SDL_main.c. And if you disable carbon too,
you can still use the X11 version which doesn't require SDLmain.
I updated the DrawSprocket version, but did not include it.
(no blitters or VRAM GWorlds etc. available on OS X anyway)
Besides for Mac OS 9, I don't think there's any use for it ?
And note that any performance on Mac OS X equals OpenGL anyway...
You can get "fair" software SDL results on captured CG displays,
but for decent frame rates you need to be using GL for rendering.
Finally, here is the patch itself:
http://www.algonet.se/~afb/SDL-12CVS-macvideo.patch
--anders
PS. It says "video", but as usual it applies to mouse/keyboard too.
------
To: A list for developers using the SDL library <sdl@libsdl.org>
From: =?ISO-8859-1?Q?Anders_F_Bj=F6rklund?= <afb@algonet.se>
Date: Sun, 4 Sep 2005 10:02:15 +0200
Subject: [SDL] Updated Mac patch
Updated the previous Mac patch to disable Carbon by default.
Also "fixed" the SDL.spec again, so that it builds on Darwin.
http://www.algonet.se/~afb/SDL-1.2.9-mac.patch
Also applied fine to SDL12 CVS, when I tried it.
| author | Ryan C. Gordon <icculus@icculus.org> |
|---|---|
| date | Thu, 08 Sep 2005 06:16:14 +0000 |
| parents | 28ac87a38c17 |
| children | af8b0f9ac2f4 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
769
b8d311d90021
Updated copyright information for 2004 (Happy New Year!)
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
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 | |
|
252
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Updated the source with the correct e-mail address
Sam Lantinga <slouken@libsdl.org>
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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 /* General event handling code for SDL */ | |
| 29 | |
| 30 #include <stdio.h> | |
| 31 #include <string.h> | |
| 32 | |
| 33 #include "SDL.h" | |
| 34 #include "SDL_thread.h" | |
| 35 #include "SDL_mutex.h" | |
| 36 #include "SDL_events.h" | |
| 37 #include "SDL_events_c.h" | |
| 38 #include "SDL_timer_c.h" | |
| 39 #ifndef DISABLE_JOYSTICK | |
| 40 #include "SDL_joystick_c.h" | |
| 41 #endif | |
| 42 #ifndef ENABLE_X11 | |
| 43 #define DISABLE_X11 | |
| 44 #endif | |
| 45 #include "SDL_syswm.h" | |
| 46 #include "SDL_sysevents.h" | |
| 47 | |
| 48 /* Public data -- the event filter */ | |
| 49 SDL_EventFilter SDL_EventOK = NULL; | |
| 50 Uint8 SDL_ProcessEvents[SDL_NUMEVENTS]; | |
| 51 static Uint32 SDL_eventstate = 0; | |
| 52 | |
| 53 /* Private data -- event queue */ | |
| 54 #define MAXEVENTS 128 | |
| 55 static struct { | |
| 56 SDL_mutex *lock; | |
| 57 int active; | |
| 58 int head; | |
| 59 int tail; | |
| 60 SDL_Event event[MAXEVENTS]; | |
| 61 int wmmsg_next; | |
| 62 struct SDL_SysWMmsg wmmsg[MAXEVENTS]; | |
| 63 } SDL_EventQ; | |
| 64 | |
| 65 /* Private data -- event locking structure */ | |
| 66 static struct { | |
| 67 SDL_mutex *lock; | |
| 68 int safe; | |
| 69 } SDL_EventLock; | |
| 70 | |
| 71 /* Thread functions */ | |
| 72 static SDL_Thread *SDL_EventThread = NULL; /* Thread handle */ | |
| 73 static Uint32 event_thread; /* The event thread id */ | |
| 74 | |
| 75 void SDL_Lock_EventThread(void) | |
| 76 { | |
| 77 if ( SDL_EventThread && (SDL_ThreadID() != event_thread) ) { | |
| 78 /* Grab lock and spin until we're sure event thread stopped */ | |
| 79 SDL_mutexP(SDL_EventLock.lock); | |
| 80 while ( ! SDL_EventLock.safe ) { | |
| 81 SDL_Delay(1); | |
| 82 } | |
| 83 } | |
| 84 } | |
| 85 void SDL_Unlock_EventThread(void) | |
| 86 { | |
| 87 if ( SDL_EventThread && (SDL_ThreadID() != event_thread) ) { | |
| 88 SDL_mutexV(SDL_EventLock.lock); | |
| 89 } | |
| 90 } | |
| 91 | |
| 92 static int SDL_GobbleEvents(void *unused) | |
| 93 { | |
| 94 event_thread = SDL_ThreadID(); | |
| 95 while ( SDL_EventQ.active ) { | |
| 96 SDL_VideoDevice *video = current_video; | |
| 97 SDL_VideoDevice *this = current_video; | |
| 98 | |
| 99 /* Get events from the video subsystem */ | |
| 100 if ( video ) { | |
| 101 video->PumpEvents(this); | |
| 102 } | |
| 103 | |
| 104 /* Queue pending key-repeat events */ | |
| 105 SDL_CheckKeyRepeat(); | |
| 106 | |
| 107 #ifndef DISABLE_JOYSTICK | |
| 108 /* Check for joystick state change */ | |
| 109 if ( SDL_numjoysticks && (SDL_eventstate & SDL_JOYEVENTMASK) ) { | |
| 110 SDL_JoystickUpdate(); | |
| 111 } | |
| 112 #endif | |
| 113 | |
| 114 /* Give up the CPU for the rest of our timeslice */ | |
| 115 SDL_EventLock.safe = 1; | |
|
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Fix various problems with the timer code.
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parents:
769
diff
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|
116 if ( SDL_timer_running ) { |
| 0 | 117 SDL_ThreadedTimerCheck(); |
| 118 } | |
| 119 SDL_Delay(1); | |
| 120 | |
| 121 /* Check for event locking. | |
| 122 On the P of the lock mutex, if the lock is held, this thread | |
| 123 will wait until the lock is released before continuing. The | |
| 124 safe flag will be set, meaning that the other thread can go | |
| 125 about it's business. The safe flag is reset before the V, | |
| 126 so as soon as the mutex is free, other threads can see that | |
| 127 it's not safe to interfere with the event thread. | |
| 128 */ | |
| 129 SDL_mutexP(SDL_EventLock.lock); | |
| 130 SDL_EventLock.safe = 0; | |
| 131 SDL_mutexV(SDL_EventLock.lock); | |
| 132 } | |
| 133 SDL_SetTimerThreaded(0); | |
| 134 event_thread = 0; | |
| 135 return(0); | |
| 136 } | |
| 137 | |
| 138 static int SDL_StartEventThread(Uint32 flags) | |
| 139 { | |
| 140 /* Reset everything to zero */ | |
| 141 SDL_EventThread = NULL; | |
| 142 memset(&SDL_EventLock, 0, sizeof(SDL_EventLock)); | |
| 143 | |
| 144 /* Create the lock and set ourselves active */ | |
| 145 #ifndef DISABLE_THREADS | |
| 146 SDL_EventQ.lock = SDL_CreateMutex(); | |
| 147 if ( SDL_EventQ.lock == NULL ) { | |
| 148 #ifdef macintosh /* On MacOS 7/8, you can't multithread, so no lock needed */ | |
| 149 ; | |
| 150 #else | |
| 151 return(-1); | |
| 152 #endif | |
| 153 } | |
| 154 #endif /* !DISABLE_THREADS */ | |
| 155 SDL_EventQ.active = 1; | |
| 156 | |
| 157 if ( (flags&SDL_INIT_EVENTTHREAD) == SDL_INIT_EVENTTHREAD ) { | |
| 158 SDL_EventLock.lock = SDL_CreateMutex(); | |
| 159 if ( SDL_EventLock.lock == NULL ) { | |
| 160 return(-1); | |
| 161 } | |
| 162 SDL_EventLock.safe = 0; | |
| 163 | |
|
1028
5ba65305c954
Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
164 /* The event thread will handle timers too */ |
|
5ba65305c954
Fix various problems with the timer code.
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
165 SDL_SetTimerThreaded(2); |
| 0 | 166 SDL_EventThread = SDL_CreateThread(SDL_GobbleEvents, NULL); |
| 167 if ( SDL_EventThread == NULL ) { | |
| 168 return(-1); | |
| 169 } | |
| 170 } else { | |
| 171 event_thread = 0; | |
| 172 } | |
| 173 return(0); | |
| 174 } | |
| 175 | |
| 176 static void SDL_StopEventThread(void) | |
| 177 { | |
| 178 SDL_EventQ.active = 0; | |
| 179 if ( SDL_EventThread ) { | |
| 180 SDL_WaitThread(SDL_EventThread, NULL); | |
| 181 SDL_EventThread = NULL; | |
| 182 SDL_DestroyMutex(SDL_EventLock.lock); | |
| 183 } | |
| 184 SDL_DestroyMutex(SDL_EventQ.lock); | |
| 185 } | |
| 186 | |
| 187 Uint32 SDL_EventThreadID(void) | |
| 188 { | |
| 189 return(event_thread); | |
| 190 } | |
| 191 | |
| 192 /* Public functions */ | |
| 193 | |
| 194 void SDL_StopEventLoop(void) | |
| 195 { | |
| 196 /* Halt the event thread, if running */ | |
| 197 SDL_StopEventThread(); | |
| 198 | |
|
1123
28ac87a38c17
Date: Fri, 08 Jul 2005 22:43:48 +0200 (CEST)
Sam Lantinga <slouken@libsdl.org>
parents:
1028
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199 /* Shutdown event handlers */ |
|
28ac87a38c17
Date: Fri, 08 Jul 2005 22:43:48 +0200 (CEST)
Sam Lantinga <slouken@libsdl.org>
parents:
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200 SDL_AppActiveQuit(); |
|
28ac87a38c17
Date: Fri, 08 Jul 2005 22:43:48 +0200 (CEST)
Sam Lantinga <slouken@libsdl.org>
parents:
1028
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changeset
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201 SDL_KeyboardQuit(); |
|
28ac87a38c17
Date: Fri, 08 Jul 2005 22:43:48 +0200 (CEST)
Sam Lantinga <slouken@libsdl.org>
parents:
1028
diff
changeset
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202 SDL_MouseQuit(); |
|
28ac87a38c17
Date: Fri, 08 Jul 2005 22:43:48 +0200 (CEST)
Sam Lantinga <slouken@libsdl.org>
parents:
1028
diff
changeset
|
203 SDL_QuitQuit(); |
|
28ac87a38c17
Date: Fri, 08 Jul 2005 22:43:48 +0200 (CEST)
Sam Lantinga <slouken@libsdl.org>
parents:
1028
diff
changeset
|
204 |
| 0 | 205 /* Clean out EventQ */ |
| 206 SDL_EventQ.head = 0; | |
| 207 SDL_EventQ.tail = 0; | |
| 208 SDL_EventQ.wmmsg_next = 0; | |
| 209 } | |
| 210 | |
| 211 /* This function (and associated calls) may be called more than once */ | |
| 212 int SDL_StartEventLoop(Uint32 flags) | |
| 213 { | |
| 214 int retcode; | |
| 215 | |
| 216 /* Clean out the event queue */ | |
| 217 SDL_EventThread = NULL; | |
| 218 SDL_EventQ.lock = NULL; | |
| 219 SDL_StopEventLoop(); | |
| 220 | |
| 221 /* No filter to start with, process most event types */ | |
| 222 SDL_EventOK = NULL; | |
| 223 memset(SDL_ProcessEvents,SDL_ENABLE,sizeof(SDL_ProcessEvents)); | |
| 224 SDL_eventstate = ~0; | |
| 225 /* It's not save to call SDL_EventState() yet */ | |
| 226 SDL_eventstate &= ~(0x00000001 << SDL_SYSWMEVENT); | |
| 227 SDL_ProcessEvents[SDL_SYSWMEVENT] = SDL_IGNORE; | |
| 228 | |
| 229 /* Initialize event handlers */ | |
| 230 retcode = 0; | |
| 231 retcode += SDL_AppActiveInit(); | |
| 232 retcode += SDL_KeyboardInit(); | |
| 233 retcode += SDL_MouseInit(); | |
| 234 retcode += SDL_QuitInit(); | |
| 235 if ( retcode < 0 ) { | |
| 236 /* We don't expect them to fail, but... */ | |
| 237 return(-1); | |
| 238 } | |
| 239 | |
| 240 /* Create the lock and event thread */ | |
| 241 if ( SDL_StartEventThread(flags) < 0 ) { | |
| 242 SDL_StopEventLoop(); | |
| 243 return(-1); | |
| 244 } | |
| 245 return(0); | |
| 246 } | |
| 247 | |
| 248 | |
| 249 /* Add an event to the event queue -- called with the queue locked */ | |
| 250 static int SDL_AddEvent(SDL_Event *event) | |
| 251 { | |
| 252 int tail, added; | |
| 253 | |
| 254 tail = (SDL_EventQ.tail+1)%MAXEVENTS; | |
| 255 if ( tail == SDL_EventQ.head ) { | |
| 256 /* Overflow, drop event */ | |
| 257 added = 0; | |
| 258 } else { | |
| 259 SDL_EventQ.event[SDL_EventQ.tail] = *event; | |
| 260 if (event->type == SDL_SYSWMEVENT) { | |
| 261 /* Note that it's possible to lose an event */ | |
| 262 int next = SDL_EventQ.wmmsg_next; | |
| 263 SDL_EventQ.wmmsg[next] = *event->syswm.msg; | |
| 264 SDL_EventQ.event[SDL_EventQ.tail].syswm.msg = | |
| 265 &SDL_EventQ.wmmsg[next]; | |
| 266 SDL_EventQ.wmmsg_next = (next+1)%MAXEVENTS; | |
| 267 } | |
| 268 SDL_EventQ.tail = tail; | |
| 269 added = 1; | |
| 270 } | |
| 271 return(added); | |
| 272 } | |
| 273 | |
| 274 /* Cut an event, and return the next valid spot, or the tail */ | |
| 275 /* -- called with the queue locked */ | |
| 276 static int SDL_CutEvent(int spot) | |
| 277 { | |
| 278 if ( spot == SDL_EventQ.head ) { | |
| 279 SDL_EventQ.head = (SDL_EventQ.head+1)%MAXEVENTS; | |
| 280 return(SDL_EventQ.head); | |
| 281 } else | |
| 282 if ( (spot+1)%MAXEVENTS == SDL_EventQ.tail ) { | |
| 283 SDL_EventQ.tail = spot; | |
| 284 return(SDL_EventQ.tail); | |
| 285 } else | |
| 286 /* We cut the middle -- shift everything over */ | |
| 287 { | |
| 288 int here, next; | |
| 289 | |
| 290 /* This can probably be optimized with memcpy() -- careful! */ | |
| 291 if ( --SDL_EventQ.tail < 0 ) { | |
| 292 SDL_EventQ.tail = MAXEVENTS-1; | |
| 293 } | |
| 294 for ( here=spot; here != SDL_EventQ.tail; here = next ) { | |
| 295 next = (here+1)%MAXEVENTS; | |
| 296 SDL_EventQ.event[here] = SDL_EventQ.event[next]; | |
| 297 } | |
| 298 return(spot); | |
| 299 } | |
| 300 /* NOTREACHED */ | |
| 301 } | |
| 302 | |
| 303 /* Lock the event queue, take a peep at it, and unlock it */ | |
| 304 int SDL_PeepEvents(SDL_Event *events, int numevents, SDL_eventaction action, | |
| 305 Uint32 mask) | |
| 306 { | |
| 307 int i, used; | |
| 308 | |
| 309 /* Don't look after we've quit */ | |
| 310 if ( ! SDL_EventQ.active ) { | |
|
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Updated the documentation for the SDL_PushEvent() call.
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diff
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311 return(-1); |
| 0 | 312 } |
| 313 /* Lock the event queue */ | |
| 314 used = 0; | |
| 315 if ( SDL_mutexP(SDL_EventQ.lock) == 0 ) { | |
| 316 if ( action == SDL_ADDEVENT ) { | |
| 317 for ( i=0; i<numevents; ++i ) { | |
| 318 used += SDL_AddEvent(&events[i]); | |
| 319 } | |
| 320 } else { | |
| 321 SDL_Event tmpevent; | |
| 322 int spot; | |
| 323 | |
| 324 /* If 'events' is NULL, just see if they exist */ | |
| 325 if ( events == NULL ) { | |
| 326 action = SDL_PEEKEVENT; | |
| 327 numevents = 1; | |
| 328 events = &tmpevent; | |
| 329 } | |
| 330 spot = SDL_EventQ.head; | |
| 331 while ((used < numevents)&&(spot != SDL_EventQ.tail)) { | |
| 332 if ( mask & SDL_EVENTMASK(SDL_EventQ.event[spot].type) ) { | |
| 333 events[used++] = SDL_EventQ.event[spot]; | |
| 334 if ( action == SDL_GETEVENT ) { | |
| 335 spot = SDL_CutEvent(spot); | |
| 336 } else { | |
| 337 spot = (spot+1)%MAXEVENTS; | |
| 338 } | |
| 339 } else { | |
| 340 spot = (spot+1)%MAXEVENTS; | |
| 341 } | |
| 342 } | |
| 343 } | |
| 344 SDL_mutexV(SDL_EventQ.lock); | |
| 345 } else { | |
| 346 SDL_SetError("Couldn't lock event queue"); | |
| 347 used = -1; | |
| 348 } | |
| 349 return(used); | |
| 350 } | |
| 351 | |
| 352 /* Run the system dependent event loops */ | |
| 353 void SDL_PumpEvents(void) | |
| 354 { | |
| 355 if ( !SDL_EventThread ) { | |
| 356 SDL_VideoDevice *video = current_video; | |
| 357 SDL_VideoDevice *this = current_video; | |
| 358 | |
| 359 /* Get events from the video subsystem */ | |
| 360 if ( video ) { | |
| 361 video->PumpEvents(this); | |
| 362 } | |
| 363 | |
| 364 /* Queue pending key-repeat events */ | |
| 365 SDL_CheckKeyRepeat(); | |
| 366 | |
| 367 #ifndef DISABLE_JOYSTICK | |
| 368 /* Check for joystick state change */ | |
| 369 if ( SDL_numjoysticks && (SDL_eventstate & SDL_JOYEVENTMASK) ) { | |
| 370 SDL_JoystickUpdate(); | |
| 371 } | |
| 372 #endif | |
| 373 } | |
| 374 } | |
| 375 | |
| 376 /* Public functions */ | |
| 377 | |
| 378 int SDL_PollEvent (SDL_Event *event) | |
| 379 { | |
| 380 SDL_PumpEvents(); | |
| 381 | |
|
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Fixed SDL_PollEvent() so it only returns a boolean value (not -1)
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297
diff
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382 /* We can't return -1, just return 0 (no event) on error */ |
|
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Fixed SDL_PollEvent() so it only returns a boolean value (not -1)
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parents:
297
diff
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383 if ( SDL_PeepEvents(event, 1, SDL_GETEVENT, SDL_ALLEVENTS) <= 0 ) |
|
b49fc922e7f6
Fixed SDL_PollEvent() so it only returns a boolean value (not -1)
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
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384 return 0; |
|
b49fc922e7f6
Fixed SDL_PollEvent() so it only returns a boolean value (not -1)
Sam Lantinga <slouken@libsdl.org>
parents:
297
diff
changeset
|
385 return 1; |
| 0 | 386 } |
| 387 | |
| 388 int SDL_WaitEvent (SDL_Event *event) | |
| 389 { | |
| 390 while ( 1 ) { | |
| 391 SDL_PumpEvents(); | |
| 392 switch(SDL_PeepEvents(event, 1, SDL_GETEVENT, SDL_ALLEVENTS)) { | |
|
353
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The documented error return value for SDL_WaitEvent() is 0.
Sam Lantinga <slouken@libsdl.org>
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352
diff
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|
393 case -1: return 0; |
| 0 | 394 case 1: return 1; |
| 395 case 0: SDL_Delay(10); | |
| 396 } | |
| 397 } | |
| 398 } | |
| 399 | |
| 400 int SDL_PushEvent(SDL_Event *event) | |
| 401 { | |
| 384 | 402 if ( SDL_PeepEvents(event, 1, SDL_ADDEVENT, 0) <= 0 ) |
| 403 return -1; | |
| 404 return 0; | |
| 0 | 405 } |
| 406 | |
| 407 void SDL_SetEventFilter (SDL_EventFilter filter) | |
| 408 { | |
| 409 SDL_Event bitbucket; | |
| 410 | |
| 411 /* Set filter and discard pending events */ | |
| 412 SDL_EventOK = filter; | |
| 413 while ( SDL_PollEvent(&bitbucket) > 0 ) | |
| 414 ; | |
| 415 } | |
| 416 | |
| 417 SDL_EventFilter SDL_GetEventFilter(void) | |
| 418 { | |
| 419 return(SDL_EventOK); | |
| 420 } | |
| 421 | |
| 422 Uint8 SDL_EventState (Uint8 type, int state) | |
| 423 { | |
| 424 SDL_Event bitbucket; | |
| 425 Uint8 current_state; | |
| 426 | |
| 427 /* If SDL_ALLEVENTS was specified... */ | |
| 428 if ( type == 0xFF ) { | |
| 429 current_state = SDL_IGNORE; | |
| 430 for ( type=0; type<SDL_NUMEVENTS; ++type ) { | |
| 431 if ( SDL_ProcessEvents[type] != SDL_IGNORE ) { | |
| 432 current_state = SDL_ENABLE; | |
| 433 } | |
| 434 SDL_ProcessEvents[type] = state; | |
| 435 if ( state == SDL_ENABLE ) { | |
| 436 SDL_eventstate |= (0x00000001 << (type)); | |
| 437 } else { | |
| 438 SDL_eventstate &= ~(0x00000001 << (type)); | |
| 439 } | |
| 440 } | |
| 441 while ( SDL_PollEvent(&bitbucket) > 0 ) | |
| 442 ; | |
| 443 return(current_state); | |
| 444 } | |
| 445 | |
| 446 /* Just set the state for one event type */ | |
| 447 current_state = SDL_ProcessEvents[type]; | |
| 448 switch (state) { | |
| 449 case SDL_IGNORE: | |
| 450 case SDL_ENABLE: | |
| 451 /* Set state and discard pending events */ | |
| 452 SDL_ProcessEvents[type] = state; | |
| 453 if ( state == SDL_ENABLE ) { | |
| 454 SDL_eventstate |= (0x00000001 << (type)); | |
| 455 } else { | |
| 456 SDL_eventstate &= ~(0x00000001 << (type)); | |
| 457 } | |
| 458 while ( SDL_PollEvent(&bitbucket) > 0 ) | |
| 459 ; | |
| 460 break; | |
| 461 default: | |
| 462 /* Querying state? */ | |
| 463 break; | |
| 464 } | |
| 465 return(current_state); | |
| 466 } | |
| 467 | |
| 468 /* This is a generic event handler. | |
| 469 */ | |
| 470 int SDL_PrivateSysWMEvent(SDL_SysWMmsg *message) | |
| 471 { | |
| 472 int posted; | |
| 473 | |
| 474 posted = 0; | |
| 475 if ( SDL_ProcessEvents[SDL_SYSWMEVENT] == SDL_ENABLE ) { | |
| 476 SDL_Event event; | |
| 477 memset(&event, 0, sizeof(event)); | |
| 478 event.type = SDL_SYSWMEVENT; | |
| 479 event.syswm.msg = message; | |
| 480 if ( (SDL_EventOK == NULL) || (*SDL_EventOK)(&event) ) { | |
| 481 posted = 1; | |
| 482 SDL_PushEvent(&event); | |
| 483 } | |
| 484 } | |
| 485 /* Update internal event state */ | |
| 486 return(posted); | |
| 487 } |