| 1 | |
| 2 | /* Test out the window manager interaction functions */ |
| 3 | |
| 4 | #include <stdio.h> |
| 5 | #include <stdlib.h> |
| 6 | #include <string.h> |
| 7 | |
| 8 | #include "SDL.h" |
| 9 | |
| 10 | /* Is the cursor visible? */ |
| 11 | static int visible = 1; |
| 12 | |
| 13 | static Uint8 video_bpp; |
| 14 | static Uint32 video_flags; |
| 15 | |
| 16 | /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */ |
| 17 | static void quit(int rc) |
| 18 | { |
| 19 | SDL_Quit(); |
| 20 | exit(rc); |
| 21 | } |
| 22 | |
| 23 | int SetVideoMode(int w, int h) |
| 24 | { |
| 25 | SDL_Surface *screen; |
| 26 | int i; |
| 27 | Uint8 *buffer; |
| 28 | SDL_Color palette[256]; |
| 29 | |
| 30 | screen = SDL_SetVideoMode(w, h, video_bpp, video_flags); |
| 31 | if ( screen == NULL ) { |
| 32 | fprintf(stderr, "Couldn't set %dx%dx%d video mode: %s\n", |
| 33 | w, h, video_bpp, SDL_GetError()); |
| 34 | return(-1); |
| 35 | } |
| 36 | printf("Running in %s mode\n", screen->flags & SDL_FULLSCREEN ? |
| 37 | "fullscreen" : "windowed"); |
| 38 | |
| 39 | /* Set the surface pixels and refresh! */ |
| 40 | for ( i=0; i<256; ++i ) { |
| 41 | palette[i].r = 255-i; |
| 42 | palette[i].g = 255-i; |
| 43 | palette[i].b = 255-i; |
| 44 | } |
| 45 | SDL_SetColors(screen, palette, 0, 256); |
| 46 | if ( SDL_LockSurface(screen) < 0 ) { |
| 47 | fprintf(stderr, "Couldn't lock display surface: %s\n", |
| 48 | SDL_GetError()); |
| 49 | return(-1); |
| 50 | } |
| 51 | buffer = (Uint8 *)screen->pixels; |
| 52 | for ( i=0; i<screen->h; ++i ) { |
| 53 | memset(buffer,(i*255)/screen->h, |
| 54 | screen->w*screen->format->BytesPerPixel); |
| 55 | buffer += screen->pitch; |
| 56 | } |
| 57 | SDL_UnlockSurface(screen); |
| 58 | SDL_UpdateRect(screen, 0, 0, 0, 0); |
| 59 | |
| 60 | return(0); |
| 61 | } |
| 62 | |
| 63 | SDL_Surface *LoadIconSurface(char *file, Uint8 **maskp) |
| 64 | { |
| 65 | SDL_Surface *icon; |
| 66 | Uint8 *pixels; |
| 67 | Uint8 *mask; |
| 68 | int mlen, i, j; |
| 69 | |
| 70 | *maskp = NULL; |
| 71 | |
| 72 | /* Load the icon surface */ |
| 73 | icon = SDL_LoadBMP(file); |
| 74 | if ( icon == NULL ) { |
| 75 | fprintf(stderr, "Couldn't load %s: %s\n", file, SDL_GetError()); |
| 76 | return(NULL); |
| 77 | } |
| 78 | |
| 79 | /* Check width and height |
| 80 | if ( (icon->w%8) != 0 ) { |
| 81 | fprintf(stderr, "Icon width must be a multiple of 8!\n"); |
| 82 | SDL_FreeSurface(icon); |
| 83 | return(NULL); |
| 84 | } |
| 85 | */ |
| 86 | |
| 87 | |
| 88 | if ( icon->format->palette == NULL ) { |
| 89 | fprintf(stderr, "Icon must have a palette!\n"); |
| 90 | SDL_FreeSurface(icon); |
| 91 | return(NULL); |
| 92 | } |
| 93 | |
| 94 | /* Set the colorkey */ |
| 95 | SDL_SetColorKey(icon, SDL_SRCCOLORKEY, *((Uint8 *)icon->pixels)); |
| 96 | |
| 97 | /* Create the mask */ |
| 98 | pixels = (Uint8 *)icon->pixels; |
| 99 | printf("Transparent pixel: (%d,%d,%d)\n", |
| 100 | icon->format->palette->colors[*pixels].r, |
| 101 | icon->format->palette->colors[*pixels].g, |
| 102 | icon->format->palette->colors[*pixels].b); |
| 103 | mlen = (icon->w*icon->h + 7) / 8; |
| 104 | mask = (Uint8 *)malloc(mlen); |
| 105 | if ( mask == NULL ) { |
| 106 | fprintf(stderr, "Out of memory!\n"); |
| 107 | SDL_FreeSurface(icon); |
| 108 | return(NULL); |
| 109 | } |
| 110 | memset(mask, 0, mlen); |
| 111 | for ( i=0; i < icon->h; i++) |
| 112 | for (j=0; j < icon->w; j++) { |
| 113 | int pindex = i * icon->pitch + j; |
| 114 | int mindex = i * icon->w + j; |
| 115 | if ( pixels[pindex] != *pixels ) |
| 116 | mask[mindex>>3] |= 1 << (7 - (mindex & 7)); |
| 117 | } |
| 118 | *maskp = mask; |
| 119 | return(icon); |
| 120 | } |
| 121 | |
| 122 | void HotKey_ToggleFullScreen(void) |
| 123 | { |
| 124 | SDL_Surface *screen; |
| 125 | |
| 126 | screen = SDL_GetVideoSurface(); |
| 127 | if ( SDL_WM_ToggleFullScreen(screen) ) { |
| 128 | printf("Toggled fullscreen mode - now %s\n", |
| 129 | (screen->flags&SDL_FULLSCREEN) ? "fullscreen" : "windowed"); |
| 130 | } else { |
| 131 | printf("Unable to toggle fullscreen mode\n"); |
| 132 | video_flags ^= SDL_FULLSCREEN; |
| 133 | SetVideoMode(screen->w, screen->h); |
| 134 | } |
| 135 | } |
| 136 | |
| 137 | void HotKey_ToggleGrab(void) |
| 138 | { |
| 139 | SDL_GrabMode mode; |
| 140 | |
| 141 | printf("Ctrl-G: toggling input grab!\n"); |
| 142 | mode = SDL_WM_GrabInput(SDL_GRAB_QUERY); |
| 143 | if ( mode == SDL_GRAB_ON ) { |
| 144 | printf("Grab was on\n"); |
| 145 | } else { |
| 146 | printf("Grab was off\n"); |
| 147 | } |
| 148 | mode = SDL_WM_GrabInput(mode ? SDL_GRAB_OFF : SDL_GRAB_ON); |
| 149 | if ( mode == SDL_GRAB_ON ) { |
| 150 | printf("Grab is now on\n"); |
| 151 | } else { |
| 152 | printf("Grab is now off\n"); |
| 153 | } |
| 154 | } |
| 155 | |
| 156 | void HotKey_Iconify(void) |
| 157 | { |
| 158 | printf("Ctrl-Z: iconifying window!\n"); |
| 159 | SDL_WM_IconifyWindow(); |
| 160 | } |
| 161 | |
| 162 | void HotKey_Quit(void) |
| 163 | { |
| 164 | SDL_Event event; |
| 165 | |
| 166 | printf("Posting internal quit request\n"); |
| 167 | event.type = SDL_USEREVENT; |
| 168 | SDL_PushEvent(&event); |
| 169 | } |
| 170 | |
| 171 | static void print_modifiers(void) |
| 172 | { |
| 173 | int mod; |
| 174 | printf(" modifiers:"); |
| 175 | mod = SDL_GetModState(); |
| 176 | if(!mod) { |
| 177 | printf(" (none)"); |
| 178 | return; |
| 179 | } |
| 180 | if(mod & KMOD_LSHIFT) |
| 181 | printf(" LSHIFT"); |
| 182 | if(mod & KMOD_RSHIFT) |
| 183 | printf(" RSHIFT"); |
| 184 | if(mod & KMOD_LCTRL) |
| 185 | printf(" LCTRL"); |
| 186 | if(mod & KMOD_RCTRL) |
| 187 | printf(" RCTRL"); |
| 188 | if(mod & KMOD_LALT) |
| 189 | printf(" LALT"); |
| 190 | if(mod & KMOD_RALT) |
| 191 | printf(" RALT"); |
| 192 | if(mod & KMOD_LMETA) |
| 193 | printf(" LMETA"); |
| 194 | if(mod & KMOD_RMETA) |
| 195 | printf(" RMETA"); |
| 196 | if(mod & KMOD_NUM) |
| 197 | printf(" NUM"); |
| 198 | if(mod & KMOD_CAPS) |
| 199 | printf(" CAPS"); |
| 200 | if(mod & KMOD_MODE) |
| 201 | printf(" MODE"); |
| 202 | } |
| 203 | |
| 204 | static void PrintKey(const SDL_keysym *sym, int pressed) |
| 205 | { |
| 206 | /* Print the keycode, name and state */ |
| 207 | if ( sym->sym ) { |
| 208 | printf("Key %s: %d-%s ", pressed ? "pressed" : "released", |
| 209 | sym->sym, SDL_GetKeyName(sym->sym)); |
| 210 | } else { |
| 211 | printf("Unknown Key (scancode = %d) %s ", sym->scancode, |
| 212 | pressed ? "pressed" : "released"); |
| 213 | } |
| 214 | |
| 215 | /* Print the translated character, if one exists */ |
| 216 | if ( sym->unicode ) { |
| 217 | /* Is it a control-character? */ |
| 218 | if ( sym->unicode < ' ' ) { |
| 219 | printf(" (^%c)", sym->unicode+'@'); |
| 220 | } else { |
| 221 | #ifdef UNICODE |
| 222 | printf(" (%c)", sym->unicode); |
| 223 | #else |
| 224 | /* This is a Latin-1 program, so only show 8-bits */ |
| 225 | if ( !(sym->unicode & 0xFF00) ) |
| 226 | printf(" (%c)", sym->unicode); |
| 227 | else |
| 228 | printf(" (0x%X)", sym->unicode); |
| 229 | #endif |
| 230 | } |
| 231 | } |
| 232 | print_modifiers(); |
| 233 | printf("\n"); |
| 234 | } |
| 235 | |
| 236 | int SDLCALL FilterEvents(const SDL_Event *event) |
| 237 | { |
| 238 | static int reallyquit = 0; |
| 239 | |
| 240 | switch (event->type) { |
| 241 | |
| 242 | case SDL_ACTIVEEVENT: |
| 243 | /* See what happened */ |
| 244 | printf("App %s ", |
| 245 | event->active.gain ? "gained" : "lost"); |
| 246 | if ( event->active.state & SDL_APPACTIVE ) |
| 247 | printf("active "); |
| 248 | if ( event->active.state & SDL_APPINPUTFOCUS ) |
| 249 | printf("input "); |
| 250 | if ( event->active.state & SDL_APPMOUSEFOCUS ) |
| 251 | printf("mouse "); |
| 252 | printf("focus\n"); |
| 253 | |
| 254 | /* See if we are iconified or restored */ |
| 255 | if ( event->active.state & SDL_APPACTIVE ) { |
| 256 | printf("App has been %s\n", |
| 257 | event->active.gain ? |
| 258 | "restored" : "iconified"); |
| 259 | } |
| 260 | return(0); |
| 261 | |
| 262 | /* We want to toggle visibility on buttonpress */ |
| 263 | case SDL_MOUSEBUTTONDOWN: |
| 264 | case SDL_MOUSEBUTTONUP: |
| 265 | if ( event->button.state == SDL_PRESSED ) { |
| 266 | visible = !visible; |
| 267 | SDL_ShowCursor(visible); |
| 268 | } |
| 269 | printf("Mouse button %d has been %s\n", |
| 270 | event->button.button, |
| 271 | (event->button.state == SDL_PRESSED) ? |
| 272 | "pressed" : "released"); |
| 273 | return(0); |
| 274 | |
| 275 | /* Show relative mouse motion */ |
| 276 | case SDL_MOUSEMOTION: |
| 277 | #if 0 |
| 278 | printf("Mouse motion: {%d,%d} (%d,%d)\n", |
| 279 | event->motion.x, event->motion.y, |
| 280 | event->motion.xrel, event->motion.yrel); |
| 281 | #endif |
| 282 | return(0); |
| 283 | |
| 284 | case SDL_KEYDOWN: |
| 285 | PrintKey(&event->key.keysym, 1); |
| 286 | if ( event->key.keysym.sym == SDLK_ESCAPE ) { |
| 287 | HotKey_Quit(); |
| 288 | } |
| 289 | if ( (event->key.keysym.sym == SDLK_g) && |
| 290 | (event->key.keysym.mod & KMOD_CTRL) ) { |
| 291 | HotKey_ToggleGrab(); |
| 292 | } |
| 293 | if ( (event->key.keysym.sym == SDLK_z) && |
| 294 | (event->key.keysym.mod & KMOD_CTRL) ) { |
| 295 | HotKey_Iconify(); |
| 296 | } |
| 297 | if ( (event->key.keysym.sym == SDLK_RETURN) && |
| 298 | (event->key.keysym.mod & KMOD_ALT) ) { |
| 299 | HotKey_ToggleFullScreen(); |
| 300 | } |
| 301 | return(0); |
| 302 | |
| 303 | case SDL_KEYUP: |
| 304 | PrintKey(&event->key.keysym, 0); |
| 305 | return(0); |
| 306 | |
| 307 | /* Pass the video resize event through .. */ |
| 308 | case SDL_VIDEORESIZE: |
| 309 | return(1); |
| 310 | |
| 311 | /* This is important! Queue it if we want to quit. */ |
| 312 | case SDL_QUIT: |
| 313 | if ( ! reallyquit ) { |
| 314 | reallyquit = 1; |
| 315 | printf("Quit requested\n"); |
| 316 | return(0); |
| 317 | } |
| 318 | printf("Quit demanded\n"); |
| 319 | return(1); |
| 320 | |
| 321 | /* This will never happen because events queued directly |
| 322 | to the event queue are not filtered. |
| 323 | */ |
| 324 | case SDL_USEREVENT: |
| 325 | return(1); |
| 326 | |
| 327 | /* Drop all other events */ |
| 328 | default: |
| 329 | return(0); |
| 330 | } |
| 331 | } |
| 332 | |
| 333 | int main(int argc, char *argv[]) |
| 334 | { |
| 335 | SDL_Event event; |
| 336 | char *title; |
| 337 | SDL_Surface *icon; |
| 338 | Uint8 *icon_mask; |
| 339 | int parsed; |
| 340 | int w, h; |
| 341 | |
| 342 | if ( SDL_Init(SDL_INIT_VIDEO) < 0 ) { |
| 343 | fprintf(stderr, |
| 344 | "Couldn't initialize SDL: %s\n", SDL_GetError()); |
| 345 | return(1); |
| 346 | } |
| 347 | |
| 348 | /* Check command line arguments */ |
| 349 | w = 640; |
| 350 | h = 480; |
| 351 | video_bpp = 8; |
| 352 | video_flags = SDL_SWSURFACE; |
| 353 | parsed = 1; |
| 354 | while ( parsed ) { |
| 355 | if ( (argc >= 2) && (strcmp(argv[1], "-fullscreen") == 0) ) { |
| 356 | video_flags |= SDL_FULLSCREEN; |
| 357 | argc -= 1; |
| 358 | argv += 1; |
| 359 | } else |
| 360 | if ( (argc >= 2) && (strcmp(argv[1], "-resize") == 0) ) { |
| 361 | video_flags |= SDL_RESIZABLE; |
| 362 | argc -= 1; |
| 363 | argv += 1; |
| 364 | } else |
| 365 | if ( (argc >= 2) && (strcmp(argv[1], "-noframe") == 0) ) { |
| 366 | video_flags |= SDL_NOFRAME; |
| 367 | argc -= 1; |
| 368 | argv += 1; |
| 369 | } else |
| 370 | if ( (argc >= 3) && (strcmp(argv[1], "-width") == 0) ) { |
| 371 | w = atoi(argv[2]); |
| 372 | argc -= 2; |
| 373 | argv += 2; |
| 374 | } else |
| 375 | if ( (argc >= 3) && (strcmp(argv[1], "-height") == 0) ) { |
| 376 | h = atoi(argv[2]); |
| 377 | argc -= 2; |
| 378 | argv += 2; |
| 379 | } else |
| 380 | if ( (argc >= 3) && (strcmp(argv[1], "-bpp") == 0) ) { |
| 381 | video_bpp = atoi(argv[2]); |
| 382 | argc -= 2; |
| 383 | argv += 2; |
| 384 | } else { |
| 385 | parsed = 0; |
| 386 | } |
| 387 | } |
| 388 | |
| 389 | /* Set the icon -- this must be done before the first mode set */ |
| 390 | icon = LoadIconSurface("icon.bmp", &icon_mask); |
| 391 | if ( icon != NULL ) { |
| 392 | SDL_WM_SetIcon(icon, icon_mask); |
| 393 | } |
| 394 | if ( icon_mask != NULL ) |
| 395 | free(icon_mask); |
| 396 | |
| 397 | /* Set the title bar */ |
| 398 | if ( argv[1] == NULL ) |
| 399 | title = "Testing 1.. 2.. 3..."; |
| 400 | else |
| 401 | title = argv[1]; |
| 402 | SDL_WM_SetCaption(title, "testwm"); |
| 403 | |
| 404 | /* See if it's really set */ |
| 405 | SDL_WM_GetCaption(&title, NULL); |
| 406 | if ( title ) |
| 407 | printf("Title was set to: %s\n", title); |
| 408 | else |
| 409 | printf("No window title was set!\n"); |
| 410 | |
| 411 | /* Initialize the display */ |
| 412 | if ( SetVideoMode(w, h) < 0 ) { |
| 413 | quit(1); |
| 414 | } |
| 415 | |
| 416 | /* Set an event filter that discards everything but QUIT */ |
| 417 | SDL_SetEventFilter(FilterEvents); |
| 418 | |
| 419 | /* Loop, waiting for QUIT */ |
| 420 | while ( SDL_WaitEvent(&event) ) { |
| 421 | switch (event.type) { |
| 422 | case SDL_VIDEORESIZE: |
| 423 | printf("Got a resize event: %dx%d\n", |
| 424 | event.resize.w, event.resize.h); |
| 425 | SetVideoMode(event.resize.w, event.resize.h); |
| 426 | break; |
| 427 | case SDL_USEREVENT: |
| 428 | printf("Handling internal quit request\n"); |
| 429 | /* Fall through to the quit handler */ |
| 430 | case SDL_QUIT: |
| 431 | printf("Bye bye..\n"); |
| 432 | quit(0); |
| 433 | default: |
| 434 | /* This should never happen */ |
| 435 | printf("Warning: Event %d wasn't filtered\n", |
| 436 | event.type); |
| 437 | break; |
| 438 | } |
| 439 | } |
| 440 | printf("SDL_WaitEvent() error: %s\n", SDL_GetError()); |
| 441 | SDL_Quit(); |
| 442 | return(255); |
| 443 | } |