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 #include "x_keymap.h"
  28
  29 #include <SDL.h>
  30 #include <SDL_syswm.h>
  31
  32 #ifndef _WIN32
  33 #include <signal.h>
  34 #endif
  35
  36 static DisplayChangeListener *dcl;
  37 static SDL_Surface *real_screen;
  38 static SDL_Surface *guest_screen = NULL;
  39 static int gui_grab; /* if true, all keyboard/mouse events are grabbed */
  40 static int last_vm_running;
  41 static int gui_saved_grab;
  42 static int gui_fullscreen;
  43 static int gui_noframe;
  44 static int gui_key_modifier_pressed;
  45 static int gui_keysym;
  46 static int gui_fullscreen_initial_grab;
  47 static int gui_grab_code = KMOD_LALT | KMOD_LCTRL;
  48 static uint8_t modifiers_state[256];
  49 static int width, height;
  50 static SDL_Cursor *sdl_cursor_normal;
  51 static SDL_Cursor *sdl_cursor_hidden;
  52 static int absolute_enabled = 0;
  53 static int guest_cursor = 0;
  54 static int guest_x, guest_y;
  55 static SDL_Cursor *guest_sprite = 0;
  56
  57 static void sdl_update(DisplayState *ds, int x, int y, int w, int h)
  58 {
  59     SDL_Rect rec;
  60     rec.x = x;
  61     rec.y = y;
  62     rec.w = w;
  63     rec.h = h;
  64     //    printf("updating x=%d y=%d w=%d h=%d\n", x, y, w, h);
  65
  66     SDL_BlitSurface(guest_screen, &rec, real_screen, &rec);
  67     SDL_UpdateRect(real_screen, x, y, w, h);
  68 }
  69
  70 static void sdl_setdata(DisplayState *ds)
  71 {
  72     SDL_Rect rec;
  73     rec.x = 0;
  74     rec.y = 0;
  75     rec.w = real_screen->w;
  76     rec.h = real_screen->h;
  77
  78     if (guest_screen != NULL) SDL_FreeSurface(guest_screen);
  79
  80     guest_screen = SDL_CreateRGBSurfaceFrom(ds_get_data(ds), ds_get_width(ds), ds_get_height(ds),
  81                                             ds_get_bits_per_pixel(ds), ds_get_linesize(ds),
  82                                             ds->surface->pf.rmask, ds->surface->pf.gmask,
  83                                             ds->surface->pf.bmask, ds->surface->pf.amask);
  84 }
  85
  86 static void sdl_resize(DisplayState *ds)
  87 {
  88     int flags;
  89
  90     //    printf("resizing to %d %d\n", w, h);
  91
  92     flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
  93     if (gui_fullscreen)
  94         flags |= SDL_FULLSCREEN;
  95     if (gui_noframe)
  96         flags |= SDL_NOFRAME;
  97
  98     width = ds_get_width(ds);
  99     height = ds_get_height(ds);
 100     real_screen = SDL_SetVideoMode(width, height, 0, flags);
 101     if (!real_screen) {
 102         fprintf(stderr, "Could not open SDL display\n");
 103         exit(1);
 104     }
 105
 106     sdl_setdata(ds);
 107 }
 108
 109 /* generic keyboard conversion */
 110
 111 #include "sdl_keysym.h"
 112 #include "keymaps.c"
 113
 114 static kbd_layout_t *kbd_layout = NULL;
 115
 116 static uint8_t sdl_keyevent_to_keycode_generic(const SDL_KeyboardEvent *ev)
 117 {
 118     int keysym;
 119     /* workaround for X11+SDL bug with AltGR */
 120     keysym = ev->keysym.sym;
 121     if (keysym == 0 && ev->keysym.scancode == 113)
 122         keysym = SDLK_MODE;
 123     /* For Japanese key '\' and '|' */
 124     if (keysym == 92 && ev->keysym.scancode == 133) {
 125         keysym = 0xa5;
 126     }
 127     return keysym2scancode(kbd_layout, keysym);
 128 }
 129
 130 /* specific keyboard conversions from scan codes */
 131
 132 #if defined(_WIN32)
 133
 134 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 135 {
 136     return ev->keysym.scancode;
 137 }
 138
 139 #else
 140
 141 #if defined(SDL_VIDEO_DRIVER_X11)
 142 #include <X11/XKBlib.h>
 143
 144 static int check_for_evdev(void)
 145 {
 146     SDL_SysWMinfo info;
 147     XkbDescPtr desc;
 148     int has_evdev = 0;
 149     const char *keycodes;
 150
 151     SDL_VERSION(&info.version);
 152     if (!SDL_GetWMInfo(&info))
 153         return 0;
 154
 155     desc = XkbGetKeyboard(info.info.x11.display,
 156                           XkbGBN_AllComponentsMask,
 157                           XkbUseCoreKbd);
 158     if (desc == NULL || desc->names == NULL)
 159         return 0;
 160
 161     keycodes = XGetAtomName(info.info.x11.display, desc->names->keycodes);
 162     if (keycodes == NULL)
 163         fprintf(stderr, "could not lookup keycode name\n");
 164     else if (strstart(keycodes, "evdev", NULL))
 165         has_evdev = 1;
 166     else if (!strstart(keycodes, "xfree86", NULL))
 167         fprintf(stderr,
 168                 "unknown keycodes `%s', please report to qemu-devel@nongnu.org\n",
 169                 keycodes);
 170
 171     XkbFreeClientMap(desc, XkbGBN_AllComponentsMask, True);
 172
 173     return has_evdev;
 174 }
 175 #else
 176 static int check_for_evdev(void)
 177 {
 178         return 0;
 179 }
 180 #endif
 181
 182 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 183 {
 184     int keycode;
 185     static int has_evdev = -1;
 186
 187     if (has_evdev == -1)
 188         has_evdev = check_for_evdev();
 189
 190     keycode = ev->keysym.scancode;
 191
 192     if (keycode < 9) {
 193         keycode = 0;
 194     } else if (keycode < 97) {
 195         keycode -= 8; /* just an offset */
 196     } else if (keycode < 158) {
 197         /* use conversion table */
 198         if (has_evdev)
 199             keycode = translate_evdev_keycode(keycode - 97);
 200         else
 201             keycode = translate_xfree86_keycode(keycode - 97);
 202     } else if (keycode == 208) { /* Hiragana_Katakana */
 203         keycode = 0x70;
 204     } else if (keycode == 211) { /* backslash */
 205         keycode = 0x73;
 206     } else {
 207         keycode = 0;
 208     }
 209     return keycode;
 210 }
 211
 212 #endif
 213
 214 static void reset_keys(void)
 215 {
 216     int i;
 217     for(i = 0; i < 256; i++) {
 218         if (modifiers_state[i]) {
 219             if (i & 0x80)
 220                 kbd_put_keycode(0xe0);
 221             kbd_put_keycode(i | 0x80);
 222             modifiers_state[i] = 0;
 223         }
 224     }
 225 }
 226
 227 static void sdl_process_key(SDL_KeyboardEvent *ev)
 228 {
 229     int keycode, v;
 230
 231     if (ev->keysym.sym == SDLK_PAUSE) {
 232         /* specific case */
 233         v = 0;
 234         if (ev->type == SDL_KEYUP)
 235             v |= 0x80;
 236         kbd_put_keycode(0xe1);
 237         kbd_put_keycode(0x1d | v);
 238         kbd_put_keycode(0x45 | v);
 239         return;
 240     }
 241
 242     if (kbd_layout) {
 243         keycode = sdl_keyevent_to_keycode_generic(ev);
 244     } else {
 245         keycode = sdl_keyevent_to_keycode(ev);
 246     }
 247
 248     switch(keycode) {
 249     case 0x00:
 250         /* sent when leaving window: reset the modifiers state */
 251         reset_keys();
 252         return;
 253     case 0x2a:                          /* Left Shift */
 254     case 0x36:                          /* Right Shift */
 255     case 0x1d:                          /* Left CTRL */
 256     case 0x9d:                          /* Right CTRL */
 257     case 0x38:                          /* Left ALT */
 258     case 0xb8:                         /* Right ALT */
 259         if (ev->type == SDL_KEYUP)
 260             modifiers_state[keycode] = 0;
 261         else
 262             modifiers_state[keycode] = 1;
 263         break;
 264     case 0x45: /* num lock */
 265     case 0x3a: /* caps lock */
 266         /* SDL does not send the key up event, so we generate it */
 267         kbd_put_keycode(keycode);
 268         kbd_put_keycode(keycode | 0x80);
 269         return;
 270     }
 271
 272     /* now send the key code */
 273     if (keycode & 0x80)
 274         kbd_put_keycode(0xe0);
 275     if (ev->type == SDL_KEYUP)
 276         kbd_put_keycode(keycode | 0x80);
 277     else
 278         kbd_put_keycode(keycode & 0x7f);
 279 }
 280
 281 static void sdl_update_caption(void)
 282 {
 283     char buf[1024];
 284     const char *status = "";
 285
 286     if (!vm_running)
 287         status = " [Stopped]";
 288     else if (gui_grab) {
 289         if (!alt_grab)
 290             status = " - Press Ctrl-Alt to exit grab";
 291         else
 292             status = " - Press Ctrl-Alt-Shift to exit grab";
 293     }
 294
 295     if (qemu_name)
 296         snprintf(buf, sizeof(buf), "QEMU (%s)%s", qemu_name, status);
 297     else
 298         snprintf(buf, sizeof(buf), "QEMU%s", status);
 299
 300     SDL_WM_SetCaption(buf, "QEMU");
 301 }
 302
 303 static void sdl_hide_cursor(void)
 304 {
 305     if (!cursor_hide)
 306         return;
 307
 308     if (kbd_mouse_is_absolute()) {
 309         SDL_ShowCursor(1);
 310         SDL_SetCursor(sdl_cursor_hidden);
 311     } else {
 312         SDL_ShowCursor(0);
 313     }
 314 }
 315
 316 static void sdl_show_cursor(void)
 317 {
 318     if (!cursor_hide)
 319         return;
 320
 321     if (!kbd_mouse_is_absolute()) {
 322         SDL_ShowCursor(1);
 323         if (guest_cursor &&
 324                 (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
 325             SDL_SetCursor(guest_sprite);
 326         else
 327             SDL_SetCursor(sdl_cursor_normal);
 328     }
 329 }
 330
 331 static void sdl_grab_start(void)
 332 {
 333     if (guest_cursor) {
 334         SDL_SetCursor(guest_sprite);
 335         if (!kbd_mouse_is_absolute() && !absolute_enabled)
 336             SDL_WarpMouse(guest_x, guest_y);
 337     } else
 338         sdl_hide_cursor();
 339
 340     if (SDL_WM_GrabInput(SDL_GRAB_ON) == SDL_GRAB_ON) {
 341         gui_grab = 1;
 342         sdl_update_caption();
 343     } else
 344         sdl_show_cursor();
 345 }
 346
 347 static void sdl_grab_end(void)
 348 {
 349     SDL_WM_GrabInput(SDL_GRAB_OFF);
 350     gui_grab = 0;
 351     sdl_show_cursor();
 352     sdl_update_caption();
 353 }
 354
 355 static void sdl_send_mouse_event(int dx, int dy, int dz, int x, int y, int state)
 356 {
 357     int buttons;
 358     buttons = 0;
 359     if (state & SDL_BUTTON(SDL_BUTTON_LEFT))
 360         buttons |= MOUSE_EVENT_LBUTTON;
 361     if (state & SDL_BUTTON(SDL_BUTTON_RIGHT))
 362         buttons |= MOUSE_EVENT_RBUTTON;
 363     if (state & SDL_BUTTON(SDL_BUTTON_MIDDLE))
 364         buttons |= MOUSE_EVENT_MBUTTON;
 365
 366     if (kbd_mouse_is_absolute()) {
 367         if (!absolute_enabled) {
 368             sdl_hide_cursor();
 369             if (gui_grab) {
 370                 sdl_grab_end();
 371             }
 372             absolute_enabled = 1;
 373         }
 374
 375        dx = x * 0x7FFF / (width - 1);
 376        dy = y * 0x7FFF / (height - 1);
 377     } else if (absolute_enabled) {
 378         sdl_show_cursor();
 379         absolute_enabled = 0;
 380     } else if (guest_cursor) {
 381         x -= guest_x;
 382         y -= guest_y;
 383         guest_x += x;
 384         guest_y += y;
 385         dx = x;
 386         dy = y;
 387     }
 388
 389     kbd_mouse_event(dx, dy, dz, buttons);
 390 }
 391
 392 static void toggle_full_screen(DisplayState *ds)
 393 {
 394     gui_fullscreen = !gui_fullscreen;
 395     sdl_resize(ds);
 396     if (gui_fullscreen) {
 397         gui_saved_grab = gui_grab;
 398         sdl_grab_start();
 399     } else {
 400         if (!gui_saved_grab)
 401             sdl_grab_end();
 402     }
 403     vga_hw_invalidate();
 404     vga_hw_update();
 405 }
 406
 407 static void sdl_refresh(DisplayState *ds)
 408 {
 409     SDL_Event ev1, *ev = &ev1;
 410     int mod_state;
 411     int buttonstate = SDL_GetMouseState(NULL, NULL);
 412
 413     if (last_vm_running != vm_running) {
 414         last_vm_running = vm_running;
 415         sdl_update_caption();
 416     }
 417
 418     vga_hw_update();
 419     SDL_EnableUNICODE(!is_graphic_console());
 420
 421     while (SDL_PollEvent(ev)) {
 422         switch (ev->type) {
 423         case SDL_VIDEOEXPOSE:
 424             sdl_update(ds, 0, 0, real_screen->w, real_screen->h);
 425             break;
 426         case SDL_KEYDOWN:
 427         case SDL_KEYUP:
 428             if (ev->type == SDL_KEYDOWN) {
 429                 if (!alt_grab) {
 430                     mod_state = (SDL_GetModState() & gui_grab_code) ==
 431                                 gui_grab_code;
 432                 } else {
 433                     mod_state = (SDL_GetModState() & (gui_grab_code | KMOD_LSHIFT)) ==
 434                                 (gui_grab_code | KMOD_LSHIFT);
 435                 }
 436                 gui_key_modifier_pressed = mod_state;
 437                 if (gui_key_modifier_pressed) {
 438                     int keycode;
 439                     keycode = sdl_keyevent_to_keycode(&ev->key);
 440                     switch(keycode) {
 441                     case 0x21: /* 'f' key on US keyboard */
 442                         toggle_full_screen(ds);
 443                         gui_keysym = 1;
 444                         break;
 445                     case 0x02 ... 0x0a: /* '1' to '9' keys */
 446                         /* Reset the modifiers sent to the current console */
 447                         reset_keys();
 448                         console_select(keycode - 0x02);
 449                         if (!is_graphic_console()) {
 450                             /* display grab if going to a text console */
 451                             if (gui_grab)
 452                                 sdl_grab_end();
 453                         }
 454                         gui_keysym = 1;
 455                         break;
 456                     default:
 457                         break;
 458                     }
 459                 } else if (!is_graphic_console()) {
 460                     int keysym;
 461                     keysym = 0;
 462                     if (ev->key.keysym.mod & (KMOD_LCTRL | KMOD_RCTRL)) {
 463                         switch(ev->key.keysym.sym) {
 464                         case SDLK_UP: keysym = QEMU_KEY_CTRL_UP; break;
 465                         case SDLK_DOWN: keysym = QEMU_KEY_CTRL_DOWN; break;
 466                         case SDLK_LEFT: keysym = QEMU_KEY_CTRL_LEFT; break;
 467                         case SDLK_RIGHT: keysym = QEMU_KEY_CTRL_RIGHT; break;
 468                         case SDLK_HOME: keysym = QEMU_KEY_CTRL_HOME; break;
 469                         case SDLK_END: keysym = QEMU_KEY_CTRL_END; break;
 470                         case SDLK_PAGEUP: keysym = QEMU_KEY_CTRL_PAGEUP; break;
 471                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_CTRL_PAGEDOWN; break;
 472                         default: break;
 473                         }
 474                     } else {
 475                         switch(ev->key.keysym.sym) {
 476                         case SDLK_UP: keysym = QEMU_KEY_UP; break;
 477                         case SDLK_DOWN: keysym = QEMU_KEY_DOWN; break;
 478                         case SDLK_LEFT: keysym = QEMU_KEY_LEFT; break;
 479                         case SDLK_RIGHT: keysym = QEMU_KEY_RIGHT; break;
 480                         case SDLK_HOME: keysym = QEMU_KEY_HOME; break;
 481                         case SDLK_END: keysym = QEMU_KEY_END; break;
 482                         case SDLK_PAGEUP: keysym = QEMU_KEY_PAGEUP; break;
 483                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_PAGEDOWN; break;
 484                         case SDLK_BACKSPACE: keysym = QEMU_KEY_BACKSPACE; break;
 485                         case SDLK_DELETE: keysym = QEMU_KEY_DELETE; break;
 486                         default: break;
 487                         }
 488                     }
 489                     if (keysym) {
 490                         kbd_put_keysym(keysym);
 491                     } else if (ev->key.keysym.unicode != 0) {
 492                         kbd_put_keysym(ev->key.keysym.unicode);
 493                     }
 494                 }
 495             } else if (ev->type == SDL_KEYUP) {
 496                 if (!alt_grab) {
 497                     mod_state = (ev->key.keysym.mod & gui_grab_code);
 498                 } else {
 499                     mod_state = (ev->key.keysym.mod &
 500                                  (gui_grab_code | KMOD_LSHIFT));
 501                 }
 502                 if (!mod_state) {
 503                     if (gui_key_modifier_pressed) {
 504                         gui_key_modifier_pressed = 0;
 505                         if (gui_keysym == 0) {
 506                             /* exit/enter grab if pressing Ctrl-Alt */
 507                             if (!gui_grab) {
 508                                 /* if the application is not active,
 509                                    do not try to enter grab state. It
 510                                    prevents
 511                                    'SDL_WM_GrabInput(SDL_GRAB_ON)'
 512                                    from blocking all the application
 513                                    (SDL bug). */
 514                                 if (SDL_GetAppState() & SDL_APPACTIVE)
 515                                     sdl_grab_start();
 516                             } else {
 517                                 sdl_grab_end();
 518                             }
 519                             /* SDL does not send back all the
 520                                modifiers key, so we must correct it */
 521                             reset_keys();
 522                             break;
 523                         }
 524                         gui_keysym = 0;
 525                     }
 526                 }
 527             }
 528             if (is_graphic_console() && !gui_keysym)
 529                 sdl_process_key(&ev->key);
 530             break;
 531         case SDL_QUIT:
 532             if (!no_quit)
 533                 qemu_system_shutdown_request();
 534             break;
 535         case SDL_MOUSEMOTION:
 536             if (gui_grab || kbd_mouse_is_absolute() ||
 537                 absolute_enabled) {
 538                 sdl_send_mouse_event(ev->motion.xrel, ev->motion.yrel, 0,
 539                        ev->motion.x, ev->motion.y, ev->motion.state);
 540             }
 541             break;
 542         case SDL_MOUSEBUTTONDOWN:
 543         case SDL_MOUSEBUTTONUP:
 544             {
 545                 SDL_MouseButtonEvent *bev = &ev->button;
 546                 if (!gui_grab && !kbd_mouse_is_absolute()) {
 547                     if (ev->type == SDL_MOUSEBUTTONDOWN &&
 548                         (bev->button == SDL_BUTTON_LEFT)) {
 549                         /* start grabbing all events */
 550                         sdl_grab_start();
 551                     }
 552                 } else {
 553                     int dz;
 554                     dz = 0;
 555                     if (ev->type == SDL_MOUSEBUTTONDOWN) {
 556                         buttonstate |= SDL_BUTTON(bev->button);
 557                     } else {
 558                         buttonstate &= ~SDL_BUTTON(bev->button);
 559                     }
 560 #ifdef SDL_BUTTON_WHEELUP
 561                     if (bev->button == SDL_BUTTON_WHEELUP && ev->type == SDL_MOUSEBUTTONDOWN) {
 562                         dz = -1;
 563                     } else if (bev->button == SDL_BUTTON_WHEELDOWN && ev->type == SDL_MOUSEBUTTONDOWN) {
 564                         dz = 1;
 565                     }
 566 #endif
 567                     sdl_send_mouse_event(0, 0, dz, bev->x, bev->y, buttonstate);
 568                 }
 569             }
 570             break;
 571         case SDL_ACTIVEEVENT:
 572             if (gui_grab && ev->active.state == SDL_APPINPUTFOCUS &&
 573                 !ev->active.gain && !gui_fullscreen_initial_grab) {
 574                 sdl_grab_end();
 575             }
 576             if (ev->active.state & SDL_APPACTIVE) {
 577                 if (ev->active.gain) {
 578                     /* Back to default interval */
 579                     dcl->gui_timer_interval = 0;
 580                     dcl->idle = 0;
 581                 } else {
 582                     /* Sleeping interval */
 583                     dcl->gui_timer_interval = 500;
 584                     dcl->idle = 1;
 585                 }
 586             }
 587             break;
 588         default:
 589             break;
 590         }
 591     }
 592 }
 593
 594 static void sdl_fill(DisplayState *ds, int x, int y, int w, int h, uint32_t c)
 595 {
 596     SDL_Rect dst = { x, y, w, h };
 597     SDL_FillRect(real_screen, &dst, c);
 598 }
 599
 600 static void sdl_mouse_warp(int x, int y, int on)
 601 {
 602     if (on) {
 603         if (!guest_cursor)
 604             sdl_show_cursor();
 605         if (gui_grab || kbd_mouse_is_absolute() || absolute_enabled) {
 606             SDL_SetCursor(guest_sprite);
 607             if (!kbd_mouse_is_absolute() && !absolute_enabled)
 608                 SDL_WarpMouse(x, y);
 609         }
 610     } else if (gui_grab)
 611         sdl_hide_cursor();
 612     guest_cursor = on;
 613     guest_x = x, guest_y = y;
 614 }
 615
 616 static void sdl_mouse_define(int width, int height, int bpp,
 617                              int hot_x, int hot_y,
 618                              uint8_t *image, uint8_t *mask)
 619 {
 620     uint8_t sprite[256], *line;
 621     int x, y, dst, bypl, src = 0;
 622     if (guest_sprite)
 623         SDL_FreeCursor(guest_sprite);
 624
 625     memset(sprite, 0, 256);
 626     bypl = ((width * bpp + 31) >> 5) << 2;
 627     for (y = 0, dst = 0; y < height; y ++, image += bypl) {
 628         line = image;
 629         for (x = 0; x < width; x ++, dst ++) {
 630             switch (bpp) {
 631             case 24:
 632                 src = *(line ++); src |= *(line ++); src |= *(line ++);
 633                 break;
 634             case 16:
 635             case 15:
 636                 src = *(line ++); src |= *(line ++);
 637                 break;
 638             case 8:
 639                 src = *(line ++);
 640                 break;
 641             case 4:
 642                 src = 0xf & (line[x >> 1] >> ((x & 1)) << 2);
 643                 break;
 644             case 2:
 645                 src = 3 & (line[x >> 2] >> ((x & 3)) << 1);
 646                 break;
 647             case 1:
 648                 src = 1 & (line[x >> 3] >> (x & 7));
 649                 break;
 650             }
 651             if (!src)
 652                 sprite[dst >> 3] |= (1 << (~dst & 7)) & mask[dst >> 3];
 653         }
 654     }
 655     guest_sprite = SDL_CreateCursor(sprite, mask, width, height, hot_x, hot_y);
 656
 657     if (guest_cursor &&
 658             (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
 659         SDL_SetCursor(guest_sprite);
 660 }
 661
 662 static void sdl_cleanup(void)
 663 {
 664     if (guest_sprite)
 665         SDL_FreeCursor(guest_sprite);
 666     SDL_Quit();
 667 }
 668
 669 void sdl_display_init(DisplayState *ds, int full_screen, int no_frame)
 670 {
 671     int flags;
 672     uint8_t data = 0;
 673
 674 #if defined(__APPLE__)
 675     /* always use generic keymaps */
 676     if (!keyboard_layout)
 677         keyboard_layout = "en-us";
 678 #endif
 679     if(keyboard_layout) {
 680         kbd_layout = init_keyboard_layout(keyboard_layout);
 681         if (!kbd_layout)
 682             exit(1);
 683     }
 684
 685     if (no_frame)
 686         gui_noframe = 1;
 687
 688     flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
 689     if (SDL_Init (flags)) {
 690         fprintf(stderr, "Could not initialize SDL - exiting\n");
 691         exit(1);
 692     }
 693
 694     dcl = qemu_mallocz(sizeof(DisplayChangeListener));
 695     dcl->dpy_update = sdl_update;
 696     dcl->dpy_resize = sdl_resize;
 697     dcl->dpy_refresh = sdl_refresh;
 698     dcl->dpy_setdata = sdl_setdata;
 699     dcl->dpy_fill = sdl_fill;
 700     ds->mouse_set = sdl_mouse_warp;
 701     ds->cursor_define = sdl_mouse_define;
 702     register_displaychangelistener(ds, dcl);
 703
 704     sdl_update_caption();
 705     SDL_EnableKeyRepeat(250, 50);
 706     gui_grab = 0;
 707
 708     sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
 709     sdl_cursor_normal = SDL_GetCursor();
 710
 711     atexit(sdl_cleanup);
 712     if (full_screen) {
 713         gui_fullscreen = 1;
 714         gui_fullscreen_initial_grab = 1;
 715         sdl_grab_start();
 716     }
 717 }