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_Flip(real_screen);
  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  again:
  97     real_screen = SDL_SetVideoMode(ds_get_width(ds), ds_get_height(ds), 0, flags);
  98     if (!real_screen) {
  99         fprintf(stderr, "Could not open SDL display\n");
 100         exit(1);
 101     }
 102     if (!real_screen->pixels && (flags & SDL_HWSURFACE) && (flags & SDL_FULLSCREEN)) {
 103         flags &= ~SDL_HWSURFACE;
 104         goto again;
 105     }
 106
 107     if (!real_screen->pixels) {
 108         fprintf(stderr, "Could not open SDL display\n");
 109         exit(1);
 110     }
 111
 112     sdl_setdata(ds);
 113 }
 114
 115 /* generic keyboard conversion */
 116
 117 #include "sdl_keysym.h"
 118 #include "keymaps.c"
 119
 120 static kbd_layout_t *kbd_layout = NULL;
 121
 122 static uint8_t sdl_keyevent_to_keycode_generic(const SDL_KeyboardEvent *ev)
 123 {
 124     int keysym;
 125     /* workaround for X11+SDL bug with AltGR */
 126     keysym = ev->keysym.sym;
 127     if (keysym == 0 && ev->keysym.scancode == 113)
 128         keysym = SDLK_MODE;
 129     /* For Japanese key '\' and '|' */
 130     if (keysym == 92 && ev->keysym.scancode == 133) {
 131         keysym = 0xa5;
 132     }
 133     return keysym2scancode(kbd_layout, keysym);
 134 }
 135
 136 /* specific keyboard conversions from scan codes */
 137
 138 #if defined(_WIN32)
 139
 140 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 141 {
 142     return ev->keysym.scancode;
 143 }
 144
 145 #else
 146
 147 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 148 {
 149     int keycode;
 150
 151     keycode = ev->keysym.scancode;
 152
 153     if (keycode < 9) {
 154         keycode = 0;
 155     } else if (keycode < 97) {
 156         keycode -= 8; /* just an offset */
 157     } else if (keycode < 212) {
 158         /* use conversion table */
 159         keycode = _translate_keycode(keycode - 97);
 160     } else {
 161         keycode = 0;
 162     }
 163     return keycode;
 164 }
 165
 166 #endif
 167
 168 static void reset_keys(void)
 169 {
 170     int i;
 171     for(i = 0; i < 256; i++) {
 172         if (modifiers_state[i]) {
 173             if (i & 0x80)
 174                 kbd_put_keycode(0xe0);
 175             kbd_put_keycode(i | 0x80);
 176             modifiers_state[i] = 0;
 177         }
 178     }
 179 }
 180
 181 static void sdl_process_key(SDL_KeyboardEvent *ev)
 182 {
 183     int keycode, v;
 184
 185     if (ev->keysym.sym == SDLK_PAUSE) {
 186         /* specific case */
 187         v = 0;
 188         if (ev->type == SDL_KEYUP)
 189             v |= 0x80;
 190         kbd_put_keycode(0xe1);
 191         kbd_put_keycode(0x1d | v);
 192         kbd_put_keycode(0x45 | v);
 193         return;
 194     }
 195
 196     if (kbd_layout) {
 197         keycode = sdl_keyevent_to_keycode_generic(ev);
 198     } else {
 199         keycode = sdl_keyevent_to_keycode(ev);
 200     }
 201
 202     switch(keycode) {
 203     case 0x00:
 204         /* sent when leaving window: reset the modifiers state */
 205         reset_keys();
 206         return;
 207     case 0x2a:                          /* Left Shift */
 208     case 0x36:                          /* Right Shift */
 209     case 0x1d:                          /* Left CTRL */
 210     case 0x9d:                          /* Right CTRL */
 211     case 0x38:                          /* Left ALT */
 212     case 0xb8:                         /* Right ALT */
 213         if (ev->type == SDL_KEYUP)
 214             modifiers_state[keycode] = 0;
 215         else
 216             modifiers_state[keycode] = 1;
 217         break;
 218     case 0x45: /* num lock */
 219     case 0x3a: /* caps lock */
 220         /* SDL does not send the key up event, so we generate it */
 221         kbd_put_keycode(keycode);
 222         kbd_put_keycode(keycode | 0x80);
 223         return;
 224     }
 225
 226     /* now send the key code */
 227     if (keycode & 0x80)
 228         kbd_put_keycode(0xe0);
 229     if (ev->type == SDL_KEYUP)
 230         kbd_put_keycode(keycode | 0x80);
 231     else
 232         kbd_put_keycode(keycode & 0x7f);
 233 }
 234
 235 static void sdl_update_caption(void)
 236 {
 237     char buf[1024];
 238     const char *status = "";
 239
 240     if (!vm_running)
 241         status = " [Stopped]";
 242     else if (gui_grab) {
 243         if (!alt_grab)
 244             status = " - Press Ctrl-Alt to exit grab";
 245         else
 246             status = " - Press Ctrl-Alt-Shift to exit grab";
 247     }
 248
 249     if (qemu_name)
 250         snprintf(buf, sizeof(buf), "QEMU (%s)%s", qemu_name, status);
 251     else
 252         snprintf(buf, sizeof(buf), "QEMU%s", status);
 253
 254     SDL_WM_SetCaption(buf, "QEMU");
 255 }
 256
 257 static void sdl_hide_cursor(void)
 258 {
 259     if (!cursor_hide)
 260         return;
 261
 262     if (kbd_mouse_is_absolute()) {
 263         SDL_ShowCursor(1);
 264         SDL_SetCursor(sdl_cursor_hidden);
 265     } else {
 266         SDL_ShowCursor(0);
 267     }
 268 }
 269
 270 static void sdl_show_cursor(void)
 271 {
 272     if (!cursor_hide)
 273         return;
 274
 275     if (!kbd_mouse_is_absolute()) {
 276         SDL_ShowCursor(1);
 277         if (guest_cursor &&
 278                 (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
 279             SDL_SetCursor(guest_sprite);
 280         else
 281             SDL_SetCursor(sdl_cursor_normal);
 282     }
 283 }
 284
 285 static void sdl_grab_start(void)
 286 {
 287     if (guest_cursor) {
 288         SDL_SetCursor(guest_sprite);
 289         SDL_WarpMouse(guest_x, guest_y);
 290     } else
 291         sdl_hide_cursor();
 292
 293     if (SDL_WM_GrabInput(SDL_GRAB_ON) == SDL_GRAB_ON) {
 294         gui_grab = 1;
 295         sdl_update_caption();
 296     } else
 297         sdl_show_cursor();
 298 }
 299
 300 static void sdl_grab_end(void)
 301 {
 302     SDL_WM_GrabInput(SDL_GRAB_OFF);
 303     gui_grab = 0;
 304     sdl_show_cursor();
 305     sdl_update_caption();
 306 }
 307
 308 static void sdl_send_mouse_event(int dx, int dy, int dz, int x, int y, int state)
 309 {
 310     int buttons;
 311     buttons = 0;
 312     if (state & SDL_BUTTON(SDL_BUTTON_LEFT))
 313         buttons |= MOUSE_EVENT_LBUTTON;
 314     if (state & SDL_BUTTON(SDL_BUTTON_RIGHT))
 315         buttons |= MOUSE_EVENT_RBUTTON;
 316     if (state & SDL_BUTTON(SDL_BUTTON_MIDDLE))
 317         buttons |= MOUSE_EVENT_MBUTTON;
 318
 319     if (kbd_mouse_is_absolute()) {
 320         if (!absolute_enabled) {
 321             sdl_hide_cursor();
 322             if (gui_grab) {
 323                 sdl_grab_end();
 324             }
 325             absolute_enabled = 1;
 326         }
 327
 328        dx = x * 0x7FFF / (width - 1);
 329        dy = y * 0x7FFF / (height - 1);
 330     } else if (absolute_enabled) {
 331         sdl_show_cursor();
 332         absolute_enabled = 0;
 333     } else if (guest_cursor) {
 334         x -= guest_x;
 335         y -= guest_y;
 336         guest_x += x;
 337         guest_y += y;
 338         dx = x;
 339         dy = y;
 340     }
 341
 342     kbd_mouse_event(dx, dy, dz, buttons);
 343 }
 344
 345 static void toggle_full_screen(DisplayState *ds)
 346 {
 347     gui_fullscreen = !gui_fullscreen;
 348     sdl_resize(ds);
 349     if (gui_fullscreen) {
 350         gui_saved_grab = gui_grab;
 351         sdl_grab_start();
 352     } else {
 353         if (!gui_saved_grab)
 354             sdl_grab_end();
 355     }
 356     vga_hw_invalidate();
 357     vga_hw_update();
 358 }
 359
 360 static void sdl_refresh(DisplayState *ds)
 361 {
 362     SDL_Event ev1, *ev = &ev1;
 363     int mod_state;
 364     int buttonstate = SDL_GetMouseState(NULL, NULL);
 365
 366     if (last_vm_running != vm_running) {
 367         last_vm_running = vm_running;
 368         sdl_update_caption();
 369     }
 370
 371     vga_hw_update();
 372     SDL_EnableUNICODE(!is_graphic_console());
 373
 374     while (SDL_PollEvent(ev)) {
 375         switch (ev->type) {
 376         case SDL_VIDEOEXPOSE:
 377             sdl_update(ds, 0, 0, real_screen->w, real_screen->h);
 378             break;
 379         case SDL_KEYDOWN:
 380         case SDL_KEYUP:
 381             if (ev->type == SDL_KEYDOWN) {
 382                 if (!alt_grab) {
 383                     mod_state = (SDL_GetModState() & gui_grab_code) ==
 384                                 gui_grab_code;
 385                 } else {
 386                     mod_state = (SDL_GetModState() & (gui_grab_code | KMOD_LSHIFT)) ==
 387                                 (gui_grab_code | KMOD_LSHIFT);
 388                 }
 389                 gui_key_modifier_pressed = mod_state;
 390                 if (gui_key_modifier_pressed) {
 391                     int keycode;
 392                     keycode = sdl_keyevent_to_keycode(&ev->key);
 393                     switch(keycode) {
 394                     case 0x21: /* 'f' key on US keyboard */
 395                         toggle_full_screen(ds);
 396                         gui_keysym = 1;
 397                         break;
 398                     case 0x02 ... 0x0a: /* '1' to '9' keys */
 399                         /* Reset the modifiers sent to the current console */
 400                         reset_keys();
 401                         console_select(keycode - 0x02);
 402                         if (!is_graphic_console()) {
 403                             /* display grab if going to a text console */
 404                             if (gui_grab)
 405                                 sdl_grab_end();
 406                         }
 407                         gui_keysym = 1;
 408                         break;
 409                     default:
 410                         break;
 411                     }
 412                 } else if (!is_graphic_console()) {
 413                     int keysym;
 414                     keysym = 0;
 415                     if (ev->key.keysym.mod & (KMOD_LCTRL | KMOD_RCTRL)) {
 416                         switch(ev->key.keysym.sym) {
 417                         case SDLK_UP: keysym = QEMU_KEY_CTRL_UP; break;
 418                         case SDLK_DOWN: keysym = QEMU_KEY_CTRL_DOWN; break;
 419                         case SDLK_LEFT: keysym = QEMU_KEY_CTRL_LEFT; break;
 420                         case SDLK_RIGHT: keysym = QEMU_KEY_CTRL_RIGHT; break;
 421                         case SDLK_HOME: keysym = QEMU_KEY_CTRL_HOME; break;
 422                         case SDLK_END: keysym = QEMU_KEY_CTRL_END; break;
 423                         case SDLK_PAGEUP: keysym = QEMU_KEY_CTRL_PAGEUP; break;
 424                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_CTRL_PAGEDOWN; break;
 425                         default: break;
 426                         }
 427                     } else {
 428                         switch(ev->key.keysym.sym) {
 429                         case SDLK_UP: keysym = QEMU_KEY_UP; break;
 430                         case SDLK_DOWN: keysym = QEMU_KEY_DOWN; break;
 431                         case SDLK_LEFT: keysym = QEMU_KEY_LEFT; break;
 432                         case SDLK_RIGHT: keysym = QEMU_KEY_RIGHT; break;
 433                         case SDLK_HOME: keysym = QEMU_KEY_HOME; break;
 434                         case SDLK_END: keysym = QEMU_KEY_END; break;
 435                         case SDLK_PAGEUP: keysym = QEMU_KEY_PAGEUP; break;
 436                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_PAGEDOWN; break;
 437                         case SDLK_BACKSPACE: keysym = QEMU_KEY_BACKSPACE; break;
 438                         case SDLK_DELETE: keysym = QEMU_KEY_DELETE; break;
 439                         default: break;
 440                         }
 441                     }
 442                     if (keysym) {
 443                         kbd_put_keysym(keysym);
 444                     } else if (ev->key.keysym.unicode != 0) {
 445                         kbd_put_keysym(ev->key.keysym.unicode);
 446                     }
 447                 }
 448             } else if (ev->type == SDL_KEYUP) {
 449                 if (!alt_grab) {
 450                     mod_state = (ev->key.keysym.mod & gui_grab_code);
 451                 } else {
 452                     mod_state = (ev->key.keysym.mod &
 453                                  (gui_grab_code | KMOD_LSHIFT));
 454                 }
 455                 if (!mod_state) {
 456                     if (gui_key_modifier_pressed) {
 457                         gui_key_modifier_pressed = 0;
 458                         if (gui_keysym == 0) {
 459                             /* exit/enter grab if pressing Ctrl-Alt */
 460                             if (!gui_grab) {
 461                                 /* if the application is not active,
 462                                    do not try to enter grab state. It
 463                                    prevents
 464                                    'SDL_WM_GrabInput(SDL_GRAB_ON)'
 465                                    from blocking all the application
 466                                    (SDL bug). */
 467                                 if (SDL_GetAppState() & SDL_APPACTIVE)
 468                                     sdl_grab_start();
 469                             } else {
 470                                 sdl_grab_end();
 471                             }
 472                             /* SDL does not send back all the
 473                                modifiers key, so we must correct it */
 474                             reset_keys();
 475                             break;
 476                         }
 477                         gui_keysym = 0;
 478                     }
 479                 }
 480             }
 481             if (is_graphic_console() && !gui_keysym)
 482                 sdl_process_key(&ev->key);
 483             break;
 484         case SDL_QUIT:
 485             if (!no_quit)
 486                 qemu_system_shutdown_request();
 487             break;
 488         case SDL_MOUSEMOTION:
 489             if (gui_grab || kbd_mouse_is_absolute() ||
 490                 absolute_enabled) {
 491                 sdl_send_mouse_event(ev->motion.xrel, ev->motion.yrel, 0,
 492                        ev->motion.x, ev->motion.y, ev->motion.state);
 493             }
 494             break;
 495         case SDL_MOUSEBUTTONDOWN:
 496         case SDL_MOUSEBUTTONUP:
 497             {
 498                 SDL_MouseButtonEvent *bev = &ev->button;
 499                 if (!gui_grab && !kbd_mouse_is_absolute()) {
 500                     if (ev->type == SDL_MOUSEBUTTONDOWN &&
 501                         (bev->button == SDL_BUTTON_LEFT)) {
 502                         /* start grabbing all events */
 503                         sdl_grab_start();
 504                     }
 505                 } else {
 506                     int dz;
 507                     dz = 0;
 508                     if (ev->type == SDL_MOUSEBUTTONDOWN) {
 509                         buttonstate |= SDL_BUTTON(bev->button);
 510                     } else {
 511                         buttonstate &= ~SDL_BUTTON(bev->button);
 512                     }
 513 #ifdef SDL_BUTTON_WHEELUP
 514                     if (bev->button == SDL_BUTTON_WHEELUP && ev->type == SDL_MOUSEBUTTONDOWN) {
 515                         dz = -1;
 516                     } else if (bev->button == SDL_BUTTON_WHEELDOWN && ev->type == SDL_MOUSEBUTTONDOWN) {
 517                         dz = 1;
 518                     }
 519 #endif
 520                     sdl_send_mouse_event(0, 0, dz, bev->x, bev->y, buttonstate);
 521                 }
 522             }
 523             break;
 524         case SDL_ACTIVEEVENT:
 525             if (gui_grab && ev->active.state == SDL_APPINPUTFOCUS &&
 526                 !ev->active.gain && !gui_fullscreen_initial_grab) {
 527                 sdl_grab_end();
 528             }
 529             if (ev->active.state & SDL_APPACTIVE) {
 530                 if (ev->active.gain) {
 531                     /* Back to default interval */
 532                     dcl->gui_timer_interval = 0;
 533                     dcl->idle = 0;
 534                 } else {
 535                     /* Sleeping interval */
 536                     dcl->gui_timer_interval = 500;
 537                     dcl->idle = 1;
 538                 }
 539             }
 540             break;
 541         default:
 542             break;
 543         }
 544     }
 545 }
 546
 547 static void sdl_fill(DisplayState *ds, int x, int y, int w, int h, uint32_t c)
 548 {
 549     SDL_Rect dst = { x, y, w, h };
 550     SDL_FillRect(real_screen, &dst, c);
 551 }
 552
 553 static void sdl_mouse_warp(int x, int y, int on)
 554 {
 555     if (on) {
 556         if (!guest_cursor)
 557             sdl_show_cursor();
 558         if (gui_grab || kbd_mouse_is_absolute() || absolute_enabled) {
 559             SDL_SetCursor(guest_sprite);
 560             SDL_WarpMouse(x, y);
 561         }
 562     } else if (gui_grab)
 563         sdl_hide_cursor();
 564     guest_cursor = on;
 565     guest_x = x, guest_y = y;
 566 }
 567
 568 static void sdl_mouse_define(int width, int height, int bpp,
 569                              int hot_x, int hot_y,
 570                              uint8_t *image, uint8_t *mask)
 571 {
 572     uint8_t sprite[256], *line;
 573     int x, y, dst, bypl, src = 0;
 574     if (guest_sprite)
 575         SDL_FreeCursor(guest_sprite);
 576
 577     memset(sprite, 0, 256);
 578     bypl = ((width * bpp + 31) >> 5) << 2;
 579     for (y = 0, dst = 0; y < height; y ++, image += bypl) {
 580         line = image;
 581         for (x = 0; x < width; x ++, dst ++) {
 582             switch (bpp) {
 583             case 24:
 584                 src = *(line ++); src |= *(line ++); src |= *(line ++);
 585                 break;
 586             case 16:
 587             case 15:
 588                 src = *(line ++); src |= *(line ++);
 589                 break;
 590             case 8:
 591                 src = *(line ++);
 592                 break;
 593             case 4:
 594                 src = 0xf & (line[x >> 1] >> ((x & 1)) << 2);
 595                 break;
 596             case 2:
 597                 src = 3 & (line[x >> 2] >> ((x & 3)) << 1);
 598                 break;
 599             case 1:
 600                 src = 1 & (line[x >> 3] >> (x & 7));
 601                 break;
 602             }
 603             if (!src)
 604                 sprite[dst >> 3] |= (1 << (~dst & 7)) & mask[dst >> 3];
 605         }
 606     }
 607     guest_sprite = SDL_CreateCursor(sprite, mask, width, height, hot_x, hot_y);
 608
 609     if (guest_cursor &&
 610             (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
 611         SDL_SetCursor(guest_sprite);
 612 }
 613
 614 static void sdl_cleanup(void)
 615 {
 616     if (guest_sprite)
 617         SDL_FreeCursor(guest_sprite);
 618     SDL_Quit();
 619 }
 620
 621 void sdl_display_init(DisplayState *ds, int full_screen, int no_frame)
 622 {
 623     int flags;
 624     uint8_t data = 0;
 625
 626 #if defined(__APPLE__)
 627     /* always use generic keymaps */
 628     if (!keyboard_layout)
 629         keyboard_layout = "en-us";
 630 #endif
 631     if(keyboard_layout) {
 632         kbd_layout = init_keyboard_layout(keyboard_layout);
 633         if (!kbd_layout)
 634             exit(1);
 635     }
 636
 637     if (no_frame)
 638         gui_noframe = 1;
 639
 640     flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
 641     if (SDL_Init (flags)) {
 642         fprintf(stderr, "Could not initialize SDL - exiting\n");
 643         exit(1);
 644     }
 645
 646     dcl = qemu_mallocz(sizeof(DisplayChangeListener));
 647     if (!dcl)
 648         exit(1);
 649     dcl->dpy_update = sdl_update;
 650     dcl->dpy_resize = sdl_resize;
 651     dcl->dpy_refresh = sdl_refresh;
 652     dcl->dpy_setdata = sdl_setdata;
 653     dcl->dpy_fill = sdl_fill;
 654     ds->mouse_set = sdl_mouse_warp;
 655     ds->cursor_define = sdl_mouse_define;
 656     register_displaychangelistener(ds, dcl);
 657
 658     sdl_update_caption();
 659     SDL_EnableKeyRepeat(250, 50);
 660     gui_grab = 0;
 661
 662     sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
 663     sdl_cursor_normal = SDL_GetCursor();
 664
 665     atexit(sdl_cleanup);
 666     if (full_screen) {
 667         gui_fullscreen = 1;
 668         gui_fullscreen_initial_grab = 1;
 669         sdl_grab_start();
 670     }
 671 }