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
 113 static kbd_layout_t *kbd_layout = NULL;
 114
 115 static uint8_t sdl_keyevent_to_keycode_generic(const SDL_KeyboardEvent *ev)
 116 {
 117     int keysym;
 118     /* workaround for X11+SDL bug with AltGR */
 119     keysym = ev->keysym.sym;
 120     if (keysym == 0 && ev->keysym.scancode == 113)
 121         keysym = SDLK_MODE;
 122     /* For Japanese key '\' and '|' */
 123     if (keysym == 92 && ev->keysym.scancode == 133) {
 124         keysym = 0xa5;
 125     }
 126     return keysym2scancode(kbd_layout, keysym);
 127 }
 128
 129 /* specific keyboard conversions from scan codes */
 130
 131 #if defined(_WIN32)
 132
 133 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 134 {
 135     return ev->keysym.scancode;
 136 }
 137
 138 #else
 139
 140 #if defined(SDL_VIDEO_DRIVER_X11)
 141 #include <X11/XKBlib.h>
 142
 143 static int check_for_evdev(void)
 144 {
 145     SDL_SysWMinfo info;
 146     XkbDescPtr desc = NULL;
 147     int has_evdev = 0;
 148     char *keycodes = NULL;
 149
 150     SDL_VERSION(&info.version);
 151     if (!SDL_GetWMInfo(&info)) {
 152         return 0;
 153     }
 154     desc = XkbGetKeyboard(info.info.x11.display,
 155                           XkbGBN_AllComponentsMask,
 156                           XkbUseCoreKbd);
 157     if (desc && desc->names) {
 158         keycodes = XGetAtomName(info.info.x11.display, desc->names->keycodes);
 159         if (keycodes == NULL) {
 160             fprintf(stderr, "could not lookup keycode name\n");
 161         } else if (strstart(keycodes, "evdev", NULL)) {
 162             has_evdev = 1;
 163         } else if (!strstart(keycodes, "xfree86", NULL)) {
 164             fprintf(stderr, "unknown keycodes `%s', please report to "
 165                     "qemu-devel@nongnu.org\n", keycodes);
 166         }
 167     }
 168
 169     if (desc) {
 170         XkbFreeKeyboard(desc, XkbGBN_AllComponentsMask, True);
 171     }
 172     if (keycodes) {
 173         XFree(keycodes);
 174     }
 175     return has_evdev;
 176 }
 177 #else
 178 static int check_for_evdev(void)
 179 {
 180         return 0;
 181 }
 182 #endif
 183
 184 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 185 {
 186     int keycode;
 187     static int has_evdev = -1;
 188
 189     if (has_evdev == -1)
 190         has_evdev = check_for_evdev();
 191
 192     keycode = ev->keysym.scancode;
 193
 194     if (keycode < 9) {
 195         keycode = 0;
 196     } else if (keycode < 97) {
 197         keycode -= 8; /* just an offset */
 198     } else if (keycode < 158) {
 199         /* use conversion table */
 200         if (has_evdev)
 201             keycode = translate_evdev_keycode(keycode - 97);
 202         else
 203             keycode = translate_xfree86_keycode(keycode - 97);
 204     } else if (keycode == 208) { /* Hiragana_Katakana */
 205         keycode = 0x70;
 206     } else if (keycode == 211) { /* backslash */
 207         keycode = 0x73;
 208     } else {
 209         keycode = 0;
 210     }
 211     return keycode;
 212 }
 213
 214 #endif
 215
 216 static void reset_keys(void)
 217 {
 218     int i;
 219     for(i = 0; i < 256; i++) {
 220         if (modifiers_state[i]) {
 221             if (i & 0x80)
 222                 kbd_put_keycode(0xe0);
 223             kbd_put_keycode(i | 0x80);
 224             modifiers_state[i] = 0;
 225         }
 226     }
 227 }
 228
 229 static void sdl_process_key(SDL_KeyboardEvent *ev)
 230 {
 231     int keycode, v;
 232
 233     if (ev->keysym.sym == SDLK_PAUSE) {
 234         /* specific case */
 235         v = 0;
 236         if (ev->type == SDL_KEYUP)
 237             v |= 0x80;
 238         kbd_put_keycode(0xe1);
 239         kbd_put_keycode(0x1d | v);
 240         kbd_put_keycode(0x45 | v);
 241         return;
 242     }
 243
 244     if (kbd_layout) {
 245         keycode = sdl_keyevent_to_keycode_generic(ev);
 246     } else {
 247         keycode = sdl_keyevent_to_keycode(ev);
 248     }
 249
 250     switch(keycode) {
 251     case 0x00:
 252         /* sent when leaving window: reset the modifiers state */
 253         reset_keys();
 254         return;
 255     case 0x2a:                          /* Left Shift */
 256     case 0x36:                          /* Right Shift */
 257     case 0x1d:                          /* Left CTRL */
 258     case 0x9d:                          /* Right CTRL */
 259     case 0x38:                          /* Left ALT */
 260     case 0xb8:                         /* Right ALT */
 261         if (ev->type == SDL_KEYUP)
 262             modifiers_state[keycode] = 0;
 263         else
 264             modifiers_state[keycode] = 1;
 265         break;
 266     case 0x45: /* num lock */
 267     case 0x3a: /* caps lock */
 268         /* SDL does not send the key up event, so we generate it */
 269         kbd_put_keycode(keycode);
 270         kbd_put_keycode(keycode | 0x80);
 271         return;
 272     }
 273
 274     /* now send the key code */
 275     if (keycode & 0x80)
 276         kbd_put_keycode(0xe0);
 277     if (ev->type == SDL_KEYUP)
 278         kbd_put_keycode(keycode | 0x80);
 279     else
 280         kbd_put_keycode(keycode & 0x7f);
 281 }
 282
 283 static void sdl_update_caption(void)
 284 {
 285     char buf[1024];
 286     const char *status = "";
 287
 288     if (!vm_running)
 289         status = " [Stopped]";
 290     else if (gui_grab) {
 291         if (!alt_grab)
 292             status = " - Press Ctrl-Alt to exit grab";
 293         else
 294             status = " - Press Ctrl-Alt-Shift to exit grab";
 295     }
 296
 297     if (qemu_name)
 298         snprintf(buf, sizeof(buf), "QEMU (%s)%s", qemu_name, status);
 299     else
 300         snprintf(buf, sizeof(buf), "QEMU%s", status);
 301
 302     SDL_WM_SetCaption(buf, "QEMU");
 303 }
 304
 305 static void sdl_hide_cursor(void)
 306 {
 307     if (!cursor_hide)
 308         return;
 309
 310     if (kbd_mouse_is_absolute()) {
 311         SDL_ShowCursor(1);
 312         SDL_SetCursor(sdl_cursor_hidden);
 313     } else {
 314         SDL_ShowCursor(0);
 315     }
 316 }
 317
 318 static void sdl_show_cursor(void)
 319 {
 320     if (!cursor_hide)
 321         return;
 322
 323     if (!kbd_mouse_is_absolute()) {
 324         SDL_ShowCursor(1);
 325         if (guest_cursor &&
 326                 (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
 327             SDL_SetCursor(guest_sprite);
 328         else
 329             SDL_SetCursor(sdl_cursor_normal);
 330     }
 331 }
 332
 333 static void sdl_grab_start(void)
 334 {
 335     if (guest_cursor) {
 336         SDL_SetCursor(guest_sprite);
 337         if (!kbd_mouse_is_absolute() && !absolute_enabled)
 338             SDL_WarpMouse(guest_x, guest_y);
 339     } else
 340         sdl_hide_cursor();
 341
 342     if (SDL_WM_GrabInput(SDL_GRAB_ON) == SDL_GRAB_ON) {
 343         gui_grab = 1;
 344         sdl_update_caption();
 345     } else
 346         sdl_show_cursor();
 347 }
 348
 349 static void sdl_grab_end(void)
 350 {
 351     SDL_WM_GrabInput(SDL_GRAB_OFF);
 352     gui_grab = 0;
 353     sdl_show_cursor();
 354     sdl_update_caption();
 355 }
 356
 357 static void sdl_send_mouse_event(int dx, int dy, int dz, int x, int y, int state)
 358 {
 359     int buttons;
 360     buttons = 0;
 361     if (state & SDL_BUTTON(SDL_BUTTON_LEFT))
 362         buttons |= MOUSE_EVENT_LBUTTON;
 363     if (state & SDL_BUTTON(SDL_BUTTON_RIGHT))
 364         buttons |= MOUSE_EVENT_RBUTTON;
 365     if (state & SDL_BUTTON(SDL_BUTTON_MIDDLE))
 366         buttons |= MOUSE_EVENT_MBUTTON;
 367
 368     if (kbd_mouse_is_absolute()) {
 369         if (!absolute_enabled) {
 370             sdl_hide_cursor();
 371             if (gui_grab) {
 372                 sdl_grab_end();
 373             }
 374             absolute_enabled = 1;
 375         }
 376
 377        dx = x * 0x7FFF / (width - 1);
 378        dy = y * 0x7FFF / (height - 1);
 379     } else if (absolute_enabled) {
 380         sdl_show_cursor();
 381         absolute_enabled = 0;
 382     } else if (guest_cursor) {
 383         x -= guest_x;
 384         y -= guest_y;
 385         guest_x += x;
 386         guest_y += y;
 387         dx = x;
 388         dy = y;
 389     }
 390
 391     kbd_mouse_event(dx, dy, dz, buttons);
 392 }
 393
 394 static void toggle_full_screen(DisplayState *ds)
 395 {
 396     gui_fullscreen = !gui_fullscreen;
 397     sdl_resize(ds);
 398     if (gui_fullscreen) {
 399         gui_saved_grab = gui_grab;
 400         sdl_grab_start();
 401     } else {
 402         if (!gui_saved_grab)
 403             sdl_grab_end();
 404     }
 405     vga_hw_invalidate();
 406     vga_hw_update();
 407 }
 408
 409 static void sdl_refresh(DisplayState *ds)
 410 {
 411     SDL_Event ev1, *ev = &ev1;
 412     int mod_state;
 413     int buttonstate = SDL_GetMouseState(NULL, NULL);
 414
 415     if (last_vm_running != vm_running) {
 416         last_vm_running = vm_running;
 417         sdl_update_caption();
 418     }
 419
 420     vga_hw_update();
 421     SDL_EnableUNICODE(!is_graphic_console());
 422
 423     while (SDL_PollEvent(ev)) {
 424         switch (ev->type) {
 425         case SDL_VIDEOEXPOSE:
 426             sdl_update(ds, 0, 0, real_screen->w, real_screen->h);
 427             break;
 428         case SDL_KEYDOWN:
 429         case SDL_KEYUP:
 430             if (ev->type == SDL_KEYDOWN) {
 431                 if (!alt_grab) {
 432                     mod_state = (SDL_GetModState() & gui_grab_code) ==
 433                                 gui_grab_code;
 434                 } else {
 435                     mod_state = (SDL_GetModState() & (gui_grab_code | KMOD_LSHIFT)) ==
 436                                 (gui_grab_code | KMOD_LSHIFT);
 437                 }
 438                 gui_key_modifier_pressed = mod_state;
 439                 if (gui_key_modifier_pressed) {
 440                     int keycode;
 441                     keycode = sdl_keyevent_to_keycode(&ev->key);
 442                     switch(keycode) {
 443                     case 0x21: /* 'f' key on US keyboard */
 444                         toggle_full_screen(ds);
 445                         gui_keysym = 1;
 446                         break;
 447                     case 0x02 ... 0x0a: /* '1' to '9' keys */
 448                         /* Reset the modifiers sent to the current console */
 449                         reset_keys();
 450                         console_select(keycode - 0x02);
 451                         if (!is_graphic_console()) {
 452                             /* display grab if going to a text console */
 453                             if (gui_grab)
 454                                 sdl_grab_end();
 455                         }
 456                         gui_keysym = 1;
 457                         break;
 458                     default:
 459                         break;
 460                     }
 461                 } else if (!is_graphic_console()) {
 462                     int keysym;
 463                     keysym = 0;
 464                     if (ev->key.keysym.mod & (KMOD_LCTRL | KMOD_RCTRL)) {
 465                         switch(ev->key.keysym.sym) {
 466                         case SDLK_UP: keysym = QEMU_KEY_CTRL_UP; break;
 467                         case SDLK_DOWN: keysym = QEMU_KEY_CTRL_DOWN; break;
 468                         case SDLK_LEFT: keysym = QEMU_KEY_CTRL_LEFT; break;
 469                         case SDLK_RIGHT: keysym = QEMU_KEY_CTRL_RIGHT; break;
 470                         case SDLK_HOME: keysym = QEMU_KEY_CTRL_HOME; break;
 471                         case SDLK_END: keysym = QEMU_KEY_CTRL_END; break;
 472                         case SDLK_PAGEUP: keysym = QEMU_KEY_CTRL_PAGEUP; break;
 473                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_CTRL_PAGEDOWN; break;
 474                         default: break;
 475                         }
 476                     } else {
 477                         switch(ev->key.keysym.sym) {
 478                         case SDLK_UP: keysym = QEMU_KEY_UP; break;
 479                         case SDLK_DOWN: keysym = QEMU_KEY_DOWN; break;
 480                         case SDLK_LEFT: keysym = QEMU_KEY_LEFT; break;
 481                         case SDLK_RIGHT: keysym = QEMU_KEY_RIGHT; break;
 482                         case SDLK_HOME: keysym = QEMU_KEY_HOME; break;
 483                         case SDLK_END: keysym = QEMU_KEY_END; break;
 484                         case SDLK_PAGEUP: keysym = QEMU_KEY_PAGEUP; break;
 485                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_PAGEDOWN; break;
 486                         case SDLK_BACKSPACE: keysym = QEMU_KEY_BACKSPACE; break;
 487                         case SDLK_DELETE: keysym = QEMU_KEY_DELETE; break;
 488                         default: break;
 489                         }
 490                     }
 491                     if (keysym) {
 492                         kbd_put_keysym(keysym);
 493                     } else if (ev->key.keysym.unicode != 0) {
 494                         kbd_put_keysym(ev->key.keysym.unicode);
 495                     }
 496                 }
 497             } else if (ev->type == SDL_KEYUP) {
 498                 if (!alt_grab) {
 499                     mod_state = (ev->key.keysym.mod & gui_grab_code);
 500                 } else {
 501                     mod_state = (ev->key.keysym.mod &
 502                                  (gui_grab_code | KMOD_LSHIFT));
 503                 }
 504                 if (!mod_state) {
 505                     if (gui_key_modifier_pressed) {
 506                         gui_key_modifier_pressed = 0;
 507                         if (gui_keysym == 0) {
 508                             /* exit/enter grab if pressing Ctrl-Alt */
 509                             if (!gui_grab) {
 510                                 /* if the application is not active,
 511                                    do not try to enter grab state. It
 512                                    prevents
 513                                    'SDL_WM_GrabInput(SDL_GRAB_ON)'
 514                                    from blocking all the application
 515                                    (SDL bug). */
 516                                 if (SDL_GetAppState() & SDL_APPACTIVE)
 517                                     sdl_grab_start();
 518                             } else {
 519                                 sdl_grab_end();
 520                             }
 521                             /* SDL does not send back all the
 522                                modifiers key, so we must correct it */
 523                             reset_keys();
 524                             break;
 525                         }
 526                         gui_keysym = 0;
 527                     }
 528                 }
 529             }
 530             if (is_graphic_console() && !gui_keysym)
 531                 sdl_process_key(&ev->key);
 532             break;
 533         case SDL_QUIT:
 534             if (!no_quit)
 535                 qemu_system_shutdown_request();
 536             break;
 537         case SDL_MOUSEMOTION:
 538             if (gui_grab || kbd_mouse_is_absolute() ||
 539                 absolute_enabled) {
 540                 sdl_send_mouse_event(ev->motion.xrel, ev->motion.yrel, 0,
 541                        ev->motion.x, ev->motion.y, ev->motion.state);
 542             }
 543             break;
 544         case SDL_MOUSEBUTTONDOWN:
 545         case SDL_MOUSEBUTTONUP:
 546             {
 547                 SDL_MouseButtonEvent *bev = &ev->button;
 548                 if (!gui_grab && !kbd_mouse_is_absolute()) {
 549                     if (ev->type == SDL_MOUSEBUTTONDOWN &&
 550                         (bev->button == SDL_BUTTON_LEFT)) {
 551                         /* start grabbing all events */
 552                         sdl_grab_start();
 553                     }
 554                 } else {
 555                     int dz;
 556                     dz = 0;
 557                     if (ev->type == SDL_MOUSEBUTTONDOWN) {
 558                         buttonstate |= SDL_BUTTON(bev->button);
 559                     } else {
 560                         buttonstate &= ~SDL_BUTTON(bev->button);
 561                     }
 562 #ifdef SDL_BUTTON_WHEELUP
 563                     if (bev->button == SDL_BUTTON_WHEELUP && ev->type == SDL_MOUSEBUTTONDOWN) {
 564                         dz = -1;
 565                     } else if (bev->button == SDL_BUTTON_WHEELDOWN && ev->type == SDL_MOUSEBUTTONDOWN) {
 566                         dz = 1;
 567                     }
 568 #endif
 569                     sdl_send_mouse_event(0, 0, dz, bev->x, bev->y, buttonstate);
 570                 }
 571             }
 572             break;
 573         case SDL_ACTIVEEVENT:
 574             if (gui_grab && ev->active.state == SDL_APPINPUTFOCUS &&
 575                 !ev->active.gain && !gui_fullscreen_initial_grab) {
 576                 sdl_grab_end();
 577             }
 578             if (ev->active.state & SDL_APPACTIVE) {
 579                 if (ev->active.gain) {
 580                     /* Back to default interval */
 581                     dcl->gui_timer_interval = 0;
 582                     dcl->idle = 0;
 583                 } else {
 584                     /* Sleeping interval */
 585                     dcl->gui_timer_interval = 500;
 586                     dcl->idle = 1;
 587                 }
 588             }
 589             break;
 590         default:
 591             break;
 592         }
 593     }
 594 }
 595
 596 static void sdl_fill(DisplayState *ds, int x, int y, int w, int h, uint32_t c)
 597 {
 598     SDL_Rect dst = { x, y, w, h };
 599     SDL_FillRect(real_screen, &dst, c);
 600 }
 601
 602 static void sdl_mouse_warp(int x, int y, int on)
 603 {
 604     if (on) {
 605         if (!guest_cursor)
 606             sdl_show_cursor();
 607         if (gui_grab || kbd_mouse_is_absolute() || absolute_enabled) {
 608             SDL_SetCursor(guest_sprite);
 609             if (!kbd_mouse_is_absolute() && !absolute_enabled)
 610                 SDL_WarpMouse(x, y);
 611         }
 612     } else if (gui_grab)
 613         sdl_hide_cursor();
 614     guest_cursor = on;
 615     guest_x = x, guest_y = y;
 616 }
 617
 618 static void sdl_mouse_define(int width, int height, int bpp,
 619                              int hot_x, int hot_y,
 620                              uint8_t *image, uint8_t *mask)
 621 {
 622     uint8_t sprite[256], *line;
 623     int x, y, dst, bypl, src = 0;
 624     if (guest_sprite)
 625         SDL_FreeCursor(guest_sprite);
 626
 627     memset(sprite, 0, 256);
 628     bypl = ((width * bpp + 31) >> 5) << 2;
 629     for (y = 0, dst = 0; y < height; y ++, image += bypl) {
 630         line = image;
 631         for (x = 0; x < width; x ++, dst ++) {
 632             switch (bpp) {
 633             case 24:
 634                 src = *(line ++); src |= *(line ++); src |= *(line ++);
 635                 break;
 636             case 16:
 637             case 15:
 638                 src = *(line ++); src |= *(line ++);
 639                 break;
 640             case 8:
 641                 src = *(line ++);
 642                 break;
 643             case 4:
 644                 src = 0xf & (line[x >> 1] >> ((x & 1)) << 2);
 645                 break;
 646             case 2:
 647                 src = 3 & (line[x >> 2] >> ((x & 3)) << 1);
 648                 break;
 649             case 1:
 650                 src = 1 & (line[x >> 3] >> (x & 7));
 651                 break;
 652             }
 653             if (!src)
 654                 sprite[dst >> 3] |= (1 << (~dst & 7)) & mask[dst >> 3];
 655         }
 656     }
 657     guest_sprite = SDL_CreateCursor(sprite, mask, width, height, hot_x, hot_y);
 658
 659     if (guest_cursor &&
 660             (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
 661         SDL_SetCursor(guest_sprite);
 662 }
 663
 664 static void sdl_cleanup(void)
 665 {
 666     if (guest_sprite)
 667         SDL_FreeCursor(guest_sprite);
 668     SDL_Quit();
 669 }
 670
 671 void sdl_display_init(DisplayState *ds, int full_screen, int no_frame)
 672 {
 673     int flags;
 674     uint8_t data = 0;
 675
 676 #if defined(__APPLE__)
 677     /* always use generic keymaps */
 678     if (!keyboard_layout)
 679         keyboard_layout = "en-us";
 680 #endif
 681     if(keyboard_layout) {
 682         kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
 683         if (!kbd_layout)
 684             exit(1);
 685     }
 686
 687     if (no_frame)
 688         gui_noframe = 1;
 689
 690     flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
 691     if (SDL_Init (flags)) {
 692         fprintf(stderr, "Could not initialize SDL - exiting\n");
 693         exit(1);
 694     }
 695
 696     dcl = qemu_mallocz(sizeof(DisplayChangeListener));
 697     dcl->dpy_update = sdl_update;
 698     dcl->dpy_resize = sdl_resize;
 699     dcl->dpy_refresh = sdl_refresh;
 700     dcl->dpy_setdata = sdl_setdata;
 701     dcl->dpy_fill = sdl_fill;
 702     ds->mouse_set = sdl_mouse_warp;
 703     ds->cursor_define = sdl_mouse_define;
 704     register_displaychangelistener(ds, dcl);
 705
 706     sdl_update_caption();
 707     SDL_EnableKeyRepeat(250, 50);
 708     gui_grab = 0;
 709
 710     sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
 711     sdl_cursor_normal = SDL_GetCursor();
 712
 713     atexit(sdl_cleanup);
 714     if (full_screen) {
 715         gui_fullscreen = 1;
 716         gui_fullscreen_initial_grab = 1;
 717         sdl_grab_start();
 718     }
 719 }