sdl.c

   1 /*
   2  * QEMU SDL display driver
   3  *
   4  * Copyright (c) 2003 Fabrice Bellard
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24 #include "qemu-common.h"
  25 #include "console.h"
  26 #include "sysemu.h"
  27
  28 #include <SDL.h>
  29
  30 #ifndef _WIN32
  31 #include <signal.h>
  32 #endif
  33
  34 static DisplayChangeListener *dcl;
  35 static SDL_Surface *real_screen;
  36 static SDL_Surface *guest_screen = NULL;
  37 static int gui_grab; /* if true, all keyboard/mouse events are grabbed */
  38 static int last_vm_running;
  39 static int gui_saved_grab;
  40 static int gui_fullscreen;
  41 static int gui_noframe;
  42 static int gui_key_modifier_pressed;
  43 static int gui_keysym;
  44 static int gui_fullscreen_initial_grab;
  45 static int gui_grab_code = KMOD_LALT | KMOD_LCTRL;
  46 static uint8_t modifiers_state[256];
  47 static int width, height;
  48 static SDL_Cursor *sdl_cursor_normal;
  49 static SDL_Cursor *sdl_cursor_hidden;
  50 static int absolute_enabled = 0;
  51 static int guest_cursor = 0;
  52 static int guest_x, guest_y;
  53 static SDL_Cursor *guest_sprite = 0;
  54
  55 static void sdl_update(DisplayState *ds, int x, int y, int w, int h)
  56 {
  57     SDL_Rect rec;
  58     rec.x = x;
  59     rec.y = y;
  60     rec.w = w;
  61     rec.h = h;
  62     //    printf("updating x=%d y=%d w=%d h=%d\n", x, y, w, h);
  63
  64     SDL_BlitSurface(guest_screen, &rec, real_screen, &rec);
  65     SDL_UpdateRect(real_screen, x, y, w, h);
  66 }
  67
  68 static void sdl_setdata(DisplayState *ds)
  69 {
  70     SDL_Rect rec;
  71     rec.x = 0;
  72     rec.y = 0;
  73     rec.w = real_screen->w;
  74     rec.h = real_screen->h;
  75
  76     if (guest_screen != NULL) SDL_FreeSurface(guest_screen);
  77
  78     guest_screen = SDL_CreateRGBSurfaceFrom(ds_get_data(ds), ds_get_width(ds), ds_get_height(ds),
  79                                             ds_get_bits_per_pixel(ds), ds_get_linesize(ds),
  80                                             ds->surface->pf.rmask, ds->surface->pf.gmask,
  81                                             ds->surface->pf.bmask, ds->surface->pf.amask);
  82 }
  83
  84 static void sdl_resize(DisplayState *ds)
  85 {
  86     int flags;
  87
  88     //    printf("resizing to %d %d\n", w, h);
  89
  90     flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
  91     if (gui_fullscreen)
  92         flags |= SDL_FULLSCREEN;
  93     if (gui_noframe)
  94         flags |= SDL_NOFRAME;
  95
  96     real_screen = SDL_SetVideoMode(ds_get_width(ds), ds_get_height(ds), 0, flags);
  97     if (!real_screen) {
  98         fprintf(stderr, "Could not open SDL display\n");
  99         exit(1);
 100     }
 101
 102     sdl_setdata(ds);
 103 }
 104
 105 /* generic keyboard conversion */
 106
 107 #include "sdl_keysym.h"
 108 #include "keymaps.c"
 109
 110 static kbd_layout_t *kbd_layout = NULL;
 111
 112 static uint8_t sdl_keyevent_to_keycode_generic(const SDL_KeyboardEvent *ev)
 113 {
 114     int keysym;
 115     /* workaround for X11+SDL bug with AltGR */
 116     keysym = ev->keysym.sym;
 117     if (keysym == 0 && ev->keysym.scancode == 113)
 118         keysym = SDLK_MODE;
 119     /* For Japanese key '\' and '|' */
 120     if (keysym == 92 && ev->keysym.scancode == 133) {
 121         keysym = 0xa5;
 122     }
 123     return keysym2scancode(kbd_layout, keysym);
 124 }
 125
 126 /* specific keyboard conversions from scan codes */
 127
 128 #if defined(_WIN32)
 129
 130 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 131 {
 132     return ev->keysym.scancode;
 133 }
 134
 135 #else
 136
 137 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 138 {
 139     int keycode;
 140
 141     keycode = ev->keysym.scancode;
 142
 143     if (keycode < 9) {
 144         keycode = 0;
 145     } else if (keycode < 97) {
 146         keycode -= 8; /* just an offset */
 147     } else if (keycode < 212) {
 148         /* use conversion table */
 149         keycode = _translate_keycode(keycode - 97);
 150     } else {
 151         keycode = 0;
 152     }
 153     return keycode;
 154 }
 155
 156 #endif
 157
 158 static void reset_keys(void)
 159 {
 160     int i;
 161     for(i = 0; i < 256; i++) {
 162         if (modifiers_state[i]) {
 163             if (i & 0x80)
 164                 kbd_put_keycode(0xe0);
 165             kbd_put_keycode(i | 0x80);
 166             modifiers_state[i] = 0;
 167         }
 168     }
 169 }
 170
 171 static void sdl_process_key(SDL_KeyboardEvent *ev)
 172 {
 173     int keycode, v;
 174
 175     if (ev->keysym.sym == SDLK_PAUSE) {
 176         /* specific case */
 177         v = 0;
 178         if (ev->type == SDL_KEYUP)
 179             v |= 0x80;
 180         kbd_put_keycode(0xe1);
 181         kbd_put_keycode(0x1d | v);
 182         kbd_put_keycode(0x45 | v);
 183         return;
 184     }
 185
 186     if (kbd_layout) {
 187         keycode = sdl_keyevent_to_keycode_generic(ev);
 188     } else {
 189         keycode = sdl_keyevent_to_keycode(ev);
 190     }
 191
 192     switch(keycode) {
 193     case 0x00:
 194         /* sent when leaving window: reset the modifiers state */
 195         reset_keys();
 196         return;
 197     case 0x2a:                          /* Left Shift */
 198     case 0x36:                          /* Right Shift */
 199     case 0x1d:                          /* Left CTRL */
 200     case 0x9d:                          /* Right CTRL */
 201     case 0x38:                          /* Left ALT */
 202     case 0xb8:                         /* Right ALT */
 203         if (ev->type == SDL_KEYUP)
 204             modifiers_state[keycode] = 0;
 205         else
 206             modifiers_state[keycode] = 1;
 207         break;
 208     case 0x45: /* num lock */
 209     case 0x3a: /* caps lock */
 210         /* SDL does not send the key up event, so we generate it */
 211         kbd_put_keycode(keycode);
 212         kbd_put_keycode(keycode | 0x80);
 213         return;
 214     }
 215
 216     /* now send the key code */
 217     if (keycode & 0x80)
 218         kbd_put_keycode(0xe0);
 219     if (ev->type == SDL_KEYUP)
 220         kbd_put_keycode(keycode | 0x80);
 221     else
 222         kbd_put_keycode(keycode & 0x7f);
 223 }
 224
 225 static void sdl_update_caption(void)
 226 {
 227     char buf[1024];
 228     const char *status = "";
 229
 230     if (!vm_running)
 231         status = " [Stopped]";
 232     else if (gui_grab) {
 233         if (!alt_grab)
 234             status = " - Press Ctrl-Alt to exit grab";
 235         else
 236             status = " - Press Ctrl-Alt-Shift to exit grab";
 237     }
 238
 239     if (qemu_name)
 240         snprintf(buf, sizeof(buf), "QEMU (%s)%s", qemu_name, status);
 241     else
 242         snprintf(buf, sizeof(buf), "QEMU%s", status);
 243
 244     SDL_WM_SetCaption(buf, "QEMU");
 245 }
 246
 247 static void sdl_hide_cursor(void)
 248 {
 249     if (!cursor_hide)
 250         return;
 251
 252     if (kbd_mouse_is_absolute()) {
 253         SDL_ShowCursor(1);
 254         SDL_SetCursor(sdl_cursor_hidden);
 255     } else {
 256         SDL_ShowCursor(0);
 257     }
 258 }
 259
 260 static void sdl_show_cursor(void)
 261 {
 262     if (!cursor_hide)
 263         return;
 264
 265     if (!kbd_mouse_is_absolute()) {
 266         SDL_ShowCursor(1);
 267         if (guest_cursor &&
 268                 (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
 269             SDL_SetCursor(guest_sprite);
 270         else
 271             SDL_SetCursor(sdl_cursor_normal);
 272     }
 273 }
 274
 275 static void sdl_grab_start(void)
 276 {
 277     if (guest_cursor) {
 278         SDL_SetCursor(guest_sprite);
 279         SDL_WarpMouse(guest_x, guest_y);
 280     } else
 281         sdl_hide_cursor();
 282
 283     if (SDL_WM_GrabInput(SDL_GRAB_ON) == SDL_GRAB_ON) {
 284         gui_grab = 1;
 285         sdl_update_caption();
 286     } else
 287         sdl_show_cursor();
 288 }
 289
 290 static void sdl_grab_end(void)
 291 {
 292     SDL_WM_GrabInput(SDL_GRAB_OFF);
 293     gui_grab = 0;
 294     sdl_show_cursor();
 295     sdl_update_caption();
 296 }
 297
 298 static void sdl_send_mouse_event(int dx, int dy, int dz, int x, int y, int state)
 299 {
 300     int buttons;
 301     buttons = 0;
 302     if (state & SDL_BUTTON(SDL_BUTTON_LEFT))
 303         buttons |= MOUSE_EVENT_LBUTTON;
 304     if (state & SDL_BUTTON(SDL_BUTTON_RIGHT))
 305         buttons |= MOUSE_EVENT_RBUTTON;
 306     if (state & SDL_BUTTON(SDL_BUTTON_MIDDLE))
 307         buttons |= MOUSE_EVENT_MBUTTON;
 308
 309     if (kbd_mouse_is_absolute()) {
 310         if (!absolute_enabled) {
 311             sdl_hide_cursor();
 312             if (gui_grab) {
 313                 sdl_grab_end();
 314             }
 315             absolute_enabled = 1;
 316         }
 317
 318        dx = x * 0x7FFF / (width - 1);
 319        dy = y * 0x7FFF / (height - 1);
 320     } else if (absolute_enabled) {
 321         sdl_show_cursor();
 322         absolute_enabled = 0;
 323     } else if (guest_cursor) {
 324         x -= guest_x;
 325         y -= guest_y;
 326         guest_x += x;
 327         guest_y += y;
 328         dx = x;
 329         dy = y;
 330     }
 331
 332     kbd_mouse_event(dx, dy, dz, buttons);
 333 }
 334
 335 static void toggle_full_screen(DisplayState *ds)
 336 {
 337     gui_fullscreen = !gui_fullscreen;
 338     sdl_resize(ds);
 339     if (gui_fullscreen) {
 340         gui_saved_grab = gui_grab;
 341         sdl_grab_start();
 342     } else {
 343         if (!gui_saved_grab)
 344             sdl_grab_end();
 345     }
 346     vga_hw_invalidate();
 347     vga_hw_update();
 348 }
 349
 350 static void sdl_refresh(DisplayState *ds)
 351 {
 352     SDL_Event ev1, *ev = &ev1;
 353     int mod_state;
 354     int buttonstate = SDL_GetMouseState(NULL, NULL);
 355
 356     if (last_vm_running != vm_running) {
 357         last_vm_running = vm_running;
 358         sdl_update_caption();
 359     }
 360
 361     vga_hw_update();
 362     SDL_EnableUNICODE(!is_graphic_console());
 363
 364     while (SDL_PollEvent(ev)) {
 365         switch (ev->type) {
 366         case SDL_VIDEOEXPOSE:
 367             sdl_update(ds, 0, 0, real_screen->w, real_screen->h);
 368             break;
 369         case SDL_KEYDOWN:
 370         case SDL_KEYUP:
 371             if (ev->type == SDL_KEYDOWN) {
 372                 if (!alt_grab) {
 373                     mod_state = (SDL_GetModState() & gui_grab_code) ==
 374                                 gui_grab_code;
 375                 } else {
 376                     mod_state = (SDL_GetModState() & (gui_grab_code | KMOD_LSHIFT)) ==
 377                                 (gui_grab_code | KMOD_LSHIFT);
 378                 }
 379                 gui_key_modifier_pressed = mod_state;
 380                 if (gui_key_modifier_pressed) {
 381                     int keycode;
 382                     keycode = sdl_keyevent_to_keycode(&ev->key);
 383                     switch(keycode) {
 384                     case 0x21: /* 'f' key on US keyboard */
 385                         toggle_full_screen(ds);
 386                         gui_keysym = 1;
 387                         break;
 388                     case 0x02 ... 0x0a: /* '1' to '9' keys */
 389                         /* Reset the modifiers sent to the current console */
 390                         reset_keys();
 391                         console_select(keycode - 0x02);
 392                         if (!is_graphic_console()) {
 393                             /* display grab if going to a text console */
 394                             if (gui_grab)
 395                                 sdl_grab_end();
 396                         }
 397                         gui_keysym = 1;
 398                         break;
 399                     default:
 400                         break;
 401                     }
 402                 } else if (!is_graphic_console()) {
 403                     int keysym;
 404                     keysym = 0;
 405                     if (ev->key.keysym.mod & (KMOD_LCTRL | KMOD_RCTRL)) {
 406                         switch(ev->key.keysym.sym) {
 407                         case SDLK_UP: keysym = QEMU_KEY_CTRL_UP; break;
 408                         case SDLK_DOWN: keysym = QEMU_KEY_CTRL_DOWN; break;
 409                         case SDLK_LEFT: keysym = QEMU_KEY_CTRL_LEFT; break;
 410                         case SDLK_RIGHT: keysym = QEMU_KEY_CTRL_RIGHT; break;
 411                         case SDLK_HOME: keysym = QEMU_KEY_CTRL_HOME; break;
 412                         case SDLK_END: keysym = QEMU_KEY_CTRL_END; break;
 413                         case SDLK_PAGEUP: keysym = QEMU_KEY_CTRL_PAGEUP; break;
 414                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_CTRL_PAGEDOWN; break;
 415                         default: break;
 416                         }
 417                     } else {
 418                         switch(ev->key.keysym.sym) {
 419                         case SDLK_UP: keysym = QEMU_KEY_UP; break;
 420                         case SDLK_DOWN: keysym = QEMU_KEY_DOWN; break;
 421                         case SDLK_LEFT: keysym = QEMU_KEY_LEFT; break;
 422                         case SDLK_RIGHT: keysym = QEMU_KEY_RIGHT; break;
 423                         case SDLK_HOME: keysym = QEMU_KEY_HOME; break;
 424                         case SDLK_END: keysym = QEMU_KEY_END; break;
 425                         case SDLK_PAGEUP: keysym = QEMU_KEY_PAGEUP; break;
 426                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_PAGEDOWN; break;
 427                         case SDLK_BACKSPACE: keysym = QEMU_KEY_BACKSPACE; break;
 428                         case SDLK_DELETE: keysym = QEMU_KEY_DELETE; break;
 429                         default: break;
 430                         }
 431                     }
 432                     if (keysym) {
 433                         kbd_put_keysym(keysym);
 434                     } else if (ev->key.keysym.unicode != 0) {
 435                         kbd_put_keysym(ev->key.keysym.unicode);
 436                     }
 437                 }
 438             } else if (ev->type == SDL_KEYUP) {
 439                 if (!alt_grab) {
 440                     mod_state = (ev->key.keysym.mod & gui_grab_code);
 441                 } else {
 442                     mod_state = (ev->key.keysym.mod &
 443                                  (gui_grab_code | KMOD_LSHIFT));
 444                 }
 445                 if (!mod_state) {
 446                     if (gui_key_modifier_pressed) {
 447                         gui_key_modifier_pressed = 0;
 448                         if (gui_keysym == 0) {
 449                             /* exit/enter grab if pressing Ctrl-Alt */
 450                             if (!gui_grab) {
 451                                 /* if the application is not active,
 452                                    do not try to enter grab state. It
 453                                    prevents
 454                                    'SDL_WM_GrabInput(SDL_GRAB_ON)'
 455                                    from blocking all the application
 456                                    (SDL bug). */
 457                                 if (SDL_GetAppState() & SDL_APPACTIVE)
 458                                     sdl_grab_start();
 459                             } else {
 460                                 sdl_grab_end();
 461                             }
 462                             /* SDL does not send back all the
 463                                modifiers key, so we must correct it */
 464                             reset_keys();
 465                             break;
 466                         }
 467                         gui_keysym = 0;
 468                     }
 469                 }
 470             }
 471             if (is_graphic_console() && !gui_keysym)
 472                 sdl_process_key(&ev->key);
 473             break;
 474         case SDL_QUIT:
 475             if (!no_quit)
 476                 qemu_system_shutdown_request();
 477             break;
 478         case SDL_MOUSEMOTION:
 479             if (gui_grab || kbd_mouse_is_absolute() ||
 480                 absolute_enabled) {
 481                 sdl_send_mouse_event(ev->motion.xrel, ev->motion.yrel, 0,
 482                        ev->motion.x, ev->motion.y, ev->motion.state);
 483             }
 484             break;
 485         case SDL_MOUSEBUTTONDOWN:
 486         case SDL_MOUSEBUTTONUP:
 487             {
 488                 SDL_MouseButtonEvent *bev = &ev->button;
 489                 if (!gui_grab && !kbd_mouse_is_absolute()) {
 490                     if (ev->type == SDL_MOUSEBUTTONDOWN &&
 491                         (bev->button == SDL_BUTTON_LEFT)) {
 492                         /* start grabbing all events */
 493                         sdl_grab_start();
 494                     }
 495                 } else {
 496                     int dz;
 497                     dz = 0;
 498                     if (ev->type == SDL_MOUSEBUTTONDOWN) {
 499                         buttonstate |= SDL_BUTTON(bev->button);
 500                     } else {
 501                         buttonstate &= ~SDL_BUTTON(bev->button);
 502                     }
 503 #ifdef SDL_BUTTON_WHEELUP
 504                     if (bev->button == SDL_BUTTON_WHEELUP && ev->type == SDL_MOUSEBUTTONDOWN) {
 505                         dz = -1;
 506                     } else if (bev->button == SDL_BUTTON_WHEELDOWN && ev->type == SDL_MOUSEBUTTONDOWN) {
 507                         dz = 1;
 508                     }
 509 #endif
 510                     sdl_send_mouse_event(0, 0, dz, bev->x, bev->y, buttonstate);
 511                 }
 512             }
 513             break;
 514         case SDL_ACTIVEEVENT:
 515             if (gui_grab && ev->active.state == SDL_APPINPUTFOCUS &&
 516                 !ev->active.gain && !gui_fullscreen_initial_grab) {
 517                 sdl_grab_end();
 518             }
 519             if (ev->active.state & SDL_APPACTIVE) {
 520                 if (ev->active.gain) {
 521                     /* Back to default interval */
 522                     dcl->gui_timer_interval = 0;
 523                     dcl->idle = 0;
 524                 } else {
 525                     /* Sleeping interval */
 526                     dcl->gui_timer_interval = 500;
 527                     dcl->idle = 1;
 528                 }
 529             }
 530             break;
 531         default:
 532             break;
 533         }
 534     }
 535 }
 536
 537 static void sdl_fill(DisplayState *ds, int x, int y, int w, int h, uint32_t c)
 538 {
 539     SDL_Rect dst = { x, y, w, h };
 540     SDL_FillRect(real_screen, &dst, c);
 541 }
 542
 543 static void sdl_mouse_warp(int x, int y, int on)
 544 {
 545     if (on) {
 546         if (!guest_cursor)
 547             sdl_show_cursor();
 548         if (gui_grab || kbd_mouse_is_absolute() || absolute_enabled) {
 549             SDL_SetCursor(guest_sprite);
 550             SDL_WarpMouse(x, y);
 551         }
 552     } else if (gui_grab)
 553         sdl_hide_cursor();
 554     guest_cursor = on;
 555     guest_x = x, guest_y = y;
 556 }
 557
 558 static void sdl_mouse_define(int width, int height, int bpp,
 559                              int hot_x, int hot_y,
 560                              uint8_t *image, uint8_t *mask)
 561 {
 562     uint8_t sprite[256], *line;
 563     int x, y, dst, bypl, src = 0;
 564     if (guest_sprite)
 565         SDL_FreeCursor(guest_sprite);
 566
 567     memset(sprite, 0, 256);
 568     bypl = ((width * bpp + 31) >> 5) << 2;
 569     for (y = 0, dst = 0; y < height; y ++, image += bypl) {
 570         line = image;
 571         for (x = 0; x < width; x ++, dst ++) {
 572             switch (bpp) {
 573             case 24:
 574                 src = *(line ++); src |= *(line ++); src |= *(line ++);
 575                 break;
 576             case 16:
 577             case 15:
 578                 src = *(line ++); src |= *(line ++);
 579                 break;
 580             case 8:
 581                 src = *(line ++);
 582                 break;
 583             case 4:
 584                 src = 0xf & (line[x >> 1] >> ((x & 1)) << 2);
 585                 break;
 586             case 2:
 587                 src = 3 & (line[x >> 2] >> ((x & 3)) << 1);
 588                 break;
 589             case 1:
 590                 src = 1 & (line[x >> 3] >> (x & 7));
 591                 break;
 592             }
 593             if (!src)
 594                 sprite[dst >> 3] |= (1 << (~dst & 7)) & mask[dst >> 3];
 595         }
 596     }
 597     guest_sprite = SDL_CreateCursor(sprite, mask, width, height, hot_x, hot_y);
 598
 599     if (guest_cursor &&
 600             (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
 601         SDL_SetCursor(guest_sprite);
 602 }
 603
 604 static void sdl_cleanup(void)
 605 {
 606     if (guest_sprite)
 607         SDL_FreeCursor(guest_sprite);
 608     SDL_Quit();
 609 }
 610
 611 void sdl_display_init(DisplayState *ds, int full_screen, int no_frame)
 612 {
 613     int flags;
 614     uint8_t data = 0;
 615
 616 #if defined(__APPLE__)
 617     /* always use generic keymaps */
 618     if (!keyboard_layout)
 619         keyboard_layout = "en-us";
 620 #endif
 621     if(keyboard_layout) {
 622         kbd_layout = init_keyboard_layout(keyboard_layout);
 623         if (!kbd_layout)
 624             exit(1);
 625     }
 626
 627     if (no_frame)
 628         gui_noframe = 1;
 629
 630     flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
 631     if (SDL_Init (flags)) {
 632         fprintf(stderr, "Could not initialize SDL - exiting\n");
 633         exit(1);
 634     }
 635
 636     dcl = qemu_mallocz(sizeof(DisplayChangeListener));
 637     if (!dcl)
 638         exit(1);
 639     dcl->dpy_update = sdl_update;
 640     dcl->dpy_resize = sdl_resize;
 641     dcl->dpy_refresh = sdl_refresh;
 642     dcl->dpy_setdata = sdl_setdata;
 643     dcl->dpy_fill = sdl_fill;
 644     ds->mouse_set = sdl_mouse_warp;
 645     ds->cursor_define = sdl_mouse_define;
 646     register_displaychangelistener(ds, dcl);
 647
 648     sdl_update_caption();
 649     SDL_EnableKeyRepeat(250, 50);
 650     gui_grab = 0;
 651
 652     sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
 653     sdl_cursor_normal = SDL_GetCursor();
 654
 655     atexit(sdl_cleanup);
 656     if (full_screen) {
 657         gui_fullscreen = 1;
 658         gui_fullscreen_initial_grab = 1;
 659         sdl_grab_start();
 660     }
 661 }