Mercurial > sdl-ios-xcode
annotate test/threadwin.c @ 1045:63b8e93a3a52
Release CPU when waiting
| author | Patrice Mandin <patmandin@gmail.com> |
|---|---|
| date | Fri, 01 Apr 2005 15:19:26 +0000 |
| parents | cb40b26523a5 |
| children | be9c9c8f6d53 |
| rev | line source |
|---|---|
| 0 | 1 |
| 2 /* Test out the multi-threaded event handling functions */ | |
| 3 | |
| 4 #include <stdlib.h> | |
| 5 #include <stdio.h> | |
| 6 #include <string.h> | |
| 7 | |
| 8 #include "SDL.h" | |
| 9 #include "SDL_thread.h" | |
| 10 | |
| 11 /* Are we done yet? */ | |
| 12 static int done = 0; | |
| 13 | |
| 14 /* Is the cursor visible? */ | |
| 15 static int visible = 1; | |
| 16 | |
| 17 SDL_Surface *LoadIconSurface(char *file, Uint8 **maskp) | |
| 18 { | |
| 19 SDL_Surface *icon; | |
| 20 Uint8 *pixels; | |
| 21 Uint8 *mask; | |
| 22 int mlen, i; | |
| 23 | |
| 24 *maskp = NULL; | |
| 25 | |
| 26 /* Load the icon surface */ | |
| 27 icon = SDL_LoadBMP(file); | |
| 28 if ( icon == NULL ) { | |
| 29 fprintf(stderr, "Couldn't load %s: %s\n", file, SDL_GetError()); | |
| 30 return(NULL); | |
| 31 } | |
| 32 | |
| 33 /* Check width and height */ | |
| 34 if ( (icon->w%8) != 0 ) { | |
| 35 fprintf(stderr, "Icon width must be a multiple of 8!\n"); | |
| 36 SDL_FreeSurface(icon); | |
| 37 return(NULL); | |
| 38 } | |
| 39 if ( icon->format->palette == NULL ) { | |
| 40 fprintf(stderr, "Icon must have a palette!\n"); | |
| 41 SDL_FreeSurface(icon); | |
| 42 return(NULL); | |
| 43 } | |
| 44 | |
| 45 /* Set the colorkey */ | |
| 46 SDL_SetColorKey(icon, SDL_SRCCOLORKEY, *((Uint8 *)icon->pixels)); | |
| 47 | |
| 48 /* Create the mask */ | |
| 49 pixels = (Uint8 *)icon->pixels; | |
| 50 printf("Transparent pixel: (%d,%d,%d)\n", | |
| 51 icon->format->palette->colors[*pixels].r, | |
| 52 icon->format->palette->colors[*pixels].g, | |
| 53 icon->format->palette->colors[*pixels].b); | |
| 54 mlen = icon->w*icon->h; | |
| 55 mask = (Uint8 *)malloc(mlen/8); | |
| 56 if ( mask == NULL ) { | |
| 57 fprintf(stderr, "Out of memory!\n"); | |
| 58 SDL_FreeSurface(icon); | |
| 59 return(NULL); | |
| 60 } | |
| 61 memset(mask, 0, mlen/8); | |
| 62 for ( i=0; i<mlen; ) { | |
| 63 if ( pixels[i] != *pixels ) | |
| 64 mask[i/8] |= 0x01; | |
| 65 ++i; | |
| 66 if ( (i%8) != 0 ) | |
| 67 mask[i/8] <<= 1; | |
| 68 } | |
| 69 *maskp = mask; | |
| 70 return(icon); | |
| 71 } | |
| 72 | |
| 73 int FilterEvents(const SDL_Event *event) | |
| 74 { | |
| 75 static int reallyquit = 0; | |
| 76 | |
| 77 switch (event->type) { | |
| 78 | |
| 79 case SDL_ACTIVEEVENT: | |
| 80 /* See what happened */ | |
| 81 printf("App %s ", | |
| 82 event->active.gain ? "gained" : "lost"); | |
| 83 if ( event->active.state & SDL_APPACTIVE ) | |
| 84 printf("active "); | |
| 85 if ( event->active.state & SDL_APPMOUSEFOCUS ) | |
| 86 printf("mouse "); | |
| 87 if ( event->active.state & SDL_APPINPUTFOCUS ) | |
| 88 printf("input "); | |
| 89 printf("focus\n"); | |
| 90 | |
| 91 /* See if we are iconified or restored */ | |
| 92 if ( event->active.state & SDL_APPACTIVE ) { | |
| 93 printf("App has been %s\n", | |
| 94 event->active.gain ? | |
| 95 "restored" : "iconified"); | |
| 96 } | |
| 97 return(0); | |
| 98 | |
| 99 /* This is important! Queue it if we want to quit. */ | |
| 100 case SDL_QUIT: | |
| 101 if ( ! reallyquit ) { | |
| 102 reallyquit = 1; | |
| 103 printf("Quit requested\n"); | |
| 104 return(0); | |
| 105 } | |
| 106 printf("Quit demanded\n"); | |
| 107 return(1); | |
| 108 | |
| 109 /* Mouse and keyboard events go to threads */ | |
| 110 case SDL_MOUSEMOTION: | |
| 111 case SDL_MOUSEBUTTONDOWN: | |
| 112 case SDL_MOUSEBUTTONUP: | |
| 113 case SDL_KEYDOWN: | |
| 114 case SDL_KEYUP: | |
| 115 return(1); | |
| 116 | |
| 117 /* Drop all other events */ | |
| 118 default: | |
| 119 return(0); | |
| 120 } | |
| 121 } | |
| 122 | |
| 123 int HandleMouse(void *unused) | |
| 124 { | |
| 125 SDL_Event events[10]; | |
| 126 int i, found; | |
| 127 Uint32 mask; | |
| 128 | |
| 129 /* Handle mouse events here */ | |
| 130 mask = (SDL_MOUSEMOTIONMASK|SDL_MOUSEBUTTONDOWNMASK|SDL_MOUSEBUTTONUPMASK); | |
| 131 while ( ! done ) { | |
| 132 found = SDL_PeepEvents(events, 10, SDL_GETEVENT, mask); | |
| 133 for ( i=0; i<found; ++i ) { | |
| 134 switch(events[i].type) { | |
| 135 /* We want to toggle visibility on buttonpress */ | |
| 136 case SDL_MOUSEBUTTONDOWN: | |
| 137 case SDL_MOUSEBUTTONUP: | |
| 138 if ( events[i].button.state == SDL_PRESSED ) { | |
| 139 visible = !visible; | |
| 140 SDL_ShowCursor(visible); | |
| 141 } | |
| 142 printf("Mouse button %d has been %s\n", | |
| 143 events[i].button.button, | |
| 144 (events[i].button.state == SDL_PRESSED) ? | |
| 145 "pressed" : "released"); | |
| 146 break; | |
| 147 /* Show relative mouse motion */ | |
| 148 case SDL_MOUSEMOTION: | |
| 149 printf("Mouse relative motion: {%d,%d}\n", | |
| 150 events[i].motion.xrel, events[i].motion.yrel); | |
| 151 break; | |
| 152 } | |
| 153 } | |
| 154 /* Give up some CPU to allow events to arrive */ | |
| 155 SDL_Delay(20); | |
| 156 } | |
| 157 return(0); | |
| 158 } | |
| 159 | |
| 160 int HandleKeyboard(void *unused) | |
| 161 { | |
| 162 SDL_Event events[10]; | |
| 163 int i, found; | |
| 164 Uint32 mask; | |
| 165 | |
| 166 /* Handle mouse events here */ | |
| 167 mask = (SDL_KEYDOWNMASK|SDL_KEYUPMASK); | |
| 168 while ( ! done ) { | |
| 169 found = SDL_PeepEvents(events, 10, SDL_GETEVENT, mask); | |
| 170 for ( i=0; i<found; ++i ) { | |
| 171 switch(events[i].type) { | |
| 172 /* We want to toggle visibility on buttonpress */ | |
| 173 case SDL_KEYDOWN: | |
| 174 case SDL_KEYUP: | |
|
562
cb40b26523a5
Added some code to toggle fullscreen and input grab for testing... --ryan.
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
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175 printf("Key '%c' has been %s\n", |
|
cb40b26523a5
Added some code to toggle fullscreen and input grab for testing... --ryan.
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
176 events[i].key.keysym.unicode, |
|
cb40b26523a5
Added some code to toggle fullscreen and input grab for testing... --ryan.
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
177 (events[i].key.state == SDL_PRESSED) ? |
|
cb40b26523a5
Added some code to toggle fullscreen and input grab for testing... --ryan.
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
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178 "pressed" : "released"); |
|
cb40b26523a5
Added some code to toggle fullscreen and input grab for testing... --ryan.
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
179 |
| 0 | 180 /* Allow hitting <ESC> to quit the app */ |
| 181 if ( events[i].key.keysym.sym == SDLK_ESCAPE ) { | |
| 182 done = 1; | |
| 183 } | |
|
562
cb40b26523a5
Added some code to toggle fullscreen and input grab for testing... --ryan.
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
184 |
|
cb40b26523a5
Added some code to toggle fullscreen and input grab for testing... --ryan.
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
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185 /* skip events now that aren't KEYUPs... */ |
|
cb40b26523a5
Added some code to toggle fullscreen and input grab for testing... --ryan.
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
186 if (events[i].key.state == SDL_PRESSED) |
|
cb40b26523a5
Added some code to toggle fullscreen and input grab for testing... --ryan.
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
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187 break; |
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cb40b26523a5
Added some code to toggle fullscreen and input grab for testing... --ryan.
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
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188 |
|
cb40b26523a5
Added some code to toggle fullscreen and input grab for testing... --ryan.
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
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189 if ( events[i].key.keysym.sym == SDLK_f ) { |
|
cb40b26523a5
Added some code to toggle fullscreen and input grab for testing... --ryan.
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
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190 int rc = 0; |
|
cb40b26523a5
Added some code to toggle fullscreen and input grab for testing... --ryan.
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
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191 printf("attempting to toggle fullscreen...\n"); |
|
cb40b26523a5
Added some code to toggle fullscreen and input grab for testing... --ryan.
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
192 rc = SDL_WM_ToggleFullScreen(SDL_GetVideoSurface()); |
|
cb40b26523a5
Added some code to toggle fullscreen and input grab for testing... --ryan.
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
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193 printf("SDL_WM_ToggleFullScreen returned %d.\n", rc); |
|
cb40b26523a5
Added some code to toggle fullscreen and input grab for testing... --ryan.
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
194 } |
|
cb40b26523a5
Added some code to toggle fullscreen and input grab for testing... --ryan.
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
195 |
|
cb40b26523a5
Added some code to toggle fullscreen and input grab for testing... --ryan.
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
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196 if ( events[i].key.keysym.sym == SDLK_g ) { |
|
cb40b26523a5
Added some code to toggle fullscreen and input grab for testing... --ryan.
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
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197 SDL_GrabMode m; |
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cb40b26523a5
Added some code to toggle fullscreen and input grab for testing... --ryan.
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
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198 m = SDL_WM_GrabInput(SDL_GRAB_QUERY) == SDL_GRAB_ON ? |
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cb40b26523a5
Added some code to toggle fullscreen and input grab for testing... --ryan.
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
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199 SDL_GRAB_OFF : SDL_GRAB_ON; |
|
cb40b26523a5
Added some code to toggle fullscreen and input grab for testing... --ryan.
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
200 printf("attempting to toggle input grab to %s...\n", |
|
cb40b26523a5
Added some code to toggle fullscreen and input grab for testing... --ryan.
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
201 m == SDL_GRAB_ON ? "ON" : "OFF"); |
|
cb40b26523a5
Added some code to toggle fullscreen and input grab for testing... --ryan.
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
202 SDL_WM_GrabInput(m); |
|
cb40b26523a5
Added some code to toggle fullscreen and input grab for testing... --ryan.
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
203 printf("attempt finished.\n"); |
|
cb40b26523a5
Added some code to toggle fullscreen and input grab for testing... --ryan.
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
204 } |
|
cb40b26523a5
Added some code to toggle fullscreen and input grab for testing... --ryan.
Ryan C. Gordon <icculus@icculus.org>
parents:
0
diff
changeset
|
205 |
| 0 | 206 break; |
| 207 } | |
| 208 } | |
| 209 /* Give up some CPU to allow events to arrive */ | |
| 210 SDL_Delay(20); | |
| 211 } | |
| 212 return(0); | |
| 213 } | |
| 214 | |
| 215 int main(int argc, char *argv[]) | |
| 216 { | |
| 217 SDL_Surface *screen; | |
| 218 SDL_Surface *icon; | |
| 219 Uint8 *icon_mask; | |
| 220 int i, parsed; | |
| 221 Uint8 *buffer; | |
| 222 SDL_Color palette[256]; | |
| 223 Uint32 init_flags; | |
| 224 Uint8 video_bpp; | |
| 225 Uint32 video_flags; | |
| 226 SDL_Thread *mouse_thread; | |
| 227 SDL_Thread *keybd_thread; | |
| 228 | |
| 229 /* Set the options, based on command line arguments */ | |
| 230 init_flags = SDL_INIT_VIDEO; | |
| 231 video_bpp = 8; | |
| 232 video_flags = SDL_SWSURFACE; | |
| 233 parsed = 1; | |
| 234 while ( parsed ) { | |
| 235 /* If the threaded option is enabled, and the SDL library hasn't | |
| 236 been compiled with threaded events enabled, then the mouse and | |
| 237 keyboard won't respond. | |
| 238 */ | |
| 239 if ( (argc >= 2) && (strcmp(argv[1], "-threaded") == 0) ) { | |
| 240 init_flags |= SDL_INIT_EVENTTHREAD; | |
| 241 argc -= 1; | |
| 242 argv += 1; | |
| 243 printf("Running with threaded events\n"); | |
| 244 } else | |
| 245 if ( (argc >= 2) && (strcmp(argv[1], "-fullscreen") == 0) ) { | |
| 246 video_flags |= SDL_FULLSCREEN; | |
| 247 argc -= 1; | |
| 248 argv += 1; | |
| 249 } else | |
| 250 if ( (argc >= 3) && (strcmp(argv[1], "-bpp") == 0) ) { | |
| 251 video_bpp = atoi(argv[2]); | |
| 252 argc -= 2; | |
| 253 argv += 2; | |
| 254 } else { | |
| 255 parsed = 0; | |
| 256 } | |
| 257 } | |
| 258 | |
| 259 /* Initialize SDL with the requested flags */ | |
| 260 if ( SDL_Init(init_flags) < 0 ) { | |
| 261 fprintf(stderr, | |
| 262 "Couldn't initialize SDL: %s\n", SDL_GetError()); | |
| 263 exit(1); | |
| 264 } | |
| 265 atexit(SDL_Quit); | |
| 266 | |
| 267 /* Set the icon -- this must be done before the first mode set */ | |
| 268 icon = LoadIconSurface("icon.bmp", &icon_mask); | |
| 269 if ( icon != NULL ) { | |
| 270 SDL_WM_SetIcon(icon, icon_mask); | |
| 271 } | |
| 272 if ( icon_mask != NULL ) | |
| 273 free(icon_mask); | |
| 274 | |
| 275 /* Initialize the display */ | |
| 276 screen = SDL_SetVideoMode(640, 480, video_bpp, video_flags); | |
| 277 if ( screen == NULL ) { | |
| 278 fprintf(stderr, "Couldn't set 640x480x%d video mode: %s\n", | |
| 279 video_bpp, SDL_GetError()); | |
| 280 exit(1); | |
| 281 } | |
| 282 printf("Running in %s mode\n", screen->flags & SDL_FULLSCREEN ? | |
| 283 "fullscreen" : "windowed"); | |
| 284 | |
| 285 /* Enable printable characters */ | |
| 286 SDL_EnableUNICODE(1); | |
| 287 | |
| 288 /* Set an event filter that discards everything but QUIT */ | |
| 289 SDL_SetEventFilter(FilterEvents); | |
| 290 | |
| 291 /* Create the event handling threads */ | |
| 292 mouse_thread = SDL_CreateThread(HandleMouse, NULL); | |
| 293 keybd_thread = SDL_CreateThread(HandleKeyboard, NULL); | |
| 294 | |
| 295 /* Set the surface pixels and refresh! */ | |
| 296 for ( i=0; i<256; ++i ) { | |
| 297 palette[i].r = 255-i; | |
| 298 palette[i].g = 255-i; | |
| 299 palette[i].b = 255-i; | |
| 300 } | |
| 301 SDL_SetColors(screen, palette, 0, 256); | |
| 302 if ( SDL_LockSurface(screen) < 0 ) { | |
| 303 fprintf(stderr, "Couldn't lock display surface: %s\n", | |
| 304 SDL_GetError()); | |
| 305 exit(2); | |
| 306 } | |
| 307 buffer = (Uint8 *)screen->pixels; | |
| 308 for ( i=0; i<screen->h; ++i ) { | |
| 309 memset(buffer,(i*255)/screen->h, | |
| 310 screen->w*screen->format->BytesPerPixel); | |
| 311 buffer += screen->pitch; | |
| 312 } | |
| 313 SDL_UnlockSurface(screen); | |
| 314 SDL_UpdateRect(screen, 0, 0, 0, 0); | |
| 315 | |
| 316 /* Loop, waiting for QUIT */ | |
| 317 while ( ! done ) { | |
| 318 if ( ! (init_flags & SDL_INIT_EVENTTHREAD) ) { | |
| 319 SDL_PumpEvents(); /* Needed when event thread is off */ | |
| 320 } | |
| 321 if ( SDL_PeepEvents(NULL, 0, SDL_PEEKEVENT, SDL_QUITMASK) ) { | |
| 322 done = 1; | |
| 323 } | |
| 324 /* Give up some CPU so the events can accumulate */ | |
| 325 SDL_Delay(20); | |
| 326 } | |
| 327 SDL_WaitThread(mouse_thread, NULL); | |
| 328 SDL_WaitThread(keybd_thread, NULL); | |
| 329 return(0); | |
| 330 } |