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 = NULL;
 148     int has_evdev = 0;
 149     char *keycodes = NULL;
 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 && desc->names) {
 159         keycodes = XGetAtomName(info.info.x11.display, desc->names->keycodes);
 160         if (keycodes == NULL) {
 161             fprintf(stderr, "could not lookup keycode name\n");
 162         } else if (strstart(keycodes, "evdev", NULL)) {
 163             has_evdev = 1;
 164         } else if (!strstart(keycodes, "xfree86", NULL)) {
 165             fprintf(stderr, "unknown keycodes `%s', please report to "
 166                     "qemu-devel@nongnu.org\n", keycodes);
 167         }
 168     }
 169
 170     if (desc) {
 171         XkbFreeKeyboard(desc, XkbGBN_AllComponentsMask, True);
 172     }
 173     if (keycodes) {
 174         XFree(keycodes);
 175     }
 176     return has_evdev;
 177 }
 178 #else
 179 static int check_for_evdev(void)
 180 {
 181         return 0;
 182 }
 183 #endif
 184
 185 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 186 {
 187     int keycode;
 188     static int has_evdev = -1;
 189
 190     if (has_evdev == -1)
 191         has_evdev = check_for_evdev();
 192
 193     keycode = ev->keysym.scancode;
 194
 195     if (keycode < 9) {
 196         keycode = 0;
 197     } else if (keycode < 97) {
 198         keycode -= 8; /* just an offset */
 199     } else if (keycode < 158) {
 200         /* use conversion table */
 201         if (has_evdev)
 202             keycode = translate_evdev_keycode(keycode - 97);
 203         else
 204             keycode = translate_xfree86_keycode(keycode - 97);
 205     } else if (keycode == 208) { /* Hiragana_Katakana */
 206         keycode = 0x70;
 207     } else if (keycode == 211) { /* backslash */
 208         keycode = 0x73;
 209     } else {
 210         keycode = 0;
 211     }
 212     return keycode;
 213 }
 214
 215 #endif
 216
 217 static void reset_keys(void)
 218 {
 219     int i;
 220     for(i = 0; i < 256; i++) {
 221         if (modifiers_state[i]) {
 222             if (i & 0x80)
 223                 kbd_put_keycode(0xe0);
 224             kbd_put_keycode(i | 0x80);
 225             modifiers_state[i] = 0;
 226         }
 227     }
 228 }
 229
 230 static void sdl_process_key(SDL_KeyboardEvent *ev)
 231 {
 232     int keycode, v;
 233
 234     if (ev->keysym.sym == SDLK_PAUSE) {
 235         /* specific case */
 236         v = 0;
 237         if (ev->type == SDL_KEYUP)
 238             v |= 0x80;
 239         kbd_put_keycode(0xe1);
 240         kbd_put_keycode(0x1d | v);
 241         kbd_put_keycode(0x45 | v);
 242         return;
 243     }
 244
 245     if (kbd_layout) {
 246         keycode = sdl_keyevent_to_keycode_generic(ev);
 247     } else {
 248         keycode = sdl_keyevent_to_keycode(ev);
 249     }
 250
 251     switch(keycode) {
 252     case 0x00:
 253         /* sent when leaving window: reset the modifiers state */
 254         reset_keys();
 255         return;
 256     case 0x2a:                          /* Left Shift */
 257     case 0x36:                          /* Right Shift */
 258     case 0x1d:                          /* Left CTRL */
 259     case 0x9d:                          /* Right CTRL */
 260     case 0x38:                          /* Left ALT */
 261     case 0xb8:                         /* Right ALT */
 262         if (ev->type == SDL_KEYUP)
 263             modifiers_state[keycode] = 0;
 264         else
 265             modifiers_state[keycode] = 1;
 266         break;
 267     case 0x45: /* num lock */
 268     case 0x3a: /* caps lock */
 269         /* SDL does not send the key up event, so we generate it */
 270         kbd_put_keycode(keycode);
 271         kbd_put_keycode(keycode | 0x80);
 272         return;
 273     }
 274
 275     /* now send the key code */
 276     if (keycode & 0x80)
 277         kbd_put_keycode(0xe0);
 278     if (ev->type == SDL_KEYUP)
 279         kbd_put_keycode(keycode | 0x80);
 280     else
 281         kbd_put_keycode(keycode & 0x7f);
 282 }
 283
 284 static void sdl_update_caption(void)
 285 {
 286     char buf[1024];
 287     const char *status = "";
 288
 289     if (!vm_running)
 290         status = " [Stopped]";
 291     else if (gui_grab) {
 292         if (!alt_grab)
 293             status = " - Press Ctrl-Alt to exit grab";
 294         else
 295             status = " - Press Ctrl-Alt-Shift to exit grab";
 296     }
 297
 298     if (qemu_name)
 299         snprintf(buf, sizeof(buf), "QEMU (%s)%s", qemu_name, status);
 300     else
 301         snprintf(buf, sizeof(buf), "QEMU%s", status);
 302
 303     SDL_WM_SetCaption(buf, "QEMU");
 304 }
 305
 306 static void sdl_hide_cursor(void)
 307 {
 308     if (!cursor_hide)
 309         return;
 310
 311     if (kbd_mouse_is_absolute()) {
 312         SDL_ShowCursor(1);
 313         SDL_SetCursor(sdl_cursor_hidden);
 314     } else {
 315         SDL_ShowCursor(0);
 316     }
 317 }
 318
 319 static void sdl_show_cursor(void)
 320 {
 321     if (!cursor_hide)
 322         return;
 323
 324     if (!kbd_mouse_is_absolute()) {
 325         SDL_ShowCursor(1);
 326         if (guest_cursor &&
 327                 (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
 328             SDL_SetCursor(guest_sprite);
 329         else
 330             SDL_SetCursor(sdl_cursor_normal);
 331     }
 332 }
 333
 334 static void sdl_grab_start(void)
 335 {
 336     if (guest_cursor) {
 337         SDL_SetCursor(guest_sprite);
 338         if (!kbd_mouse_is_absolute() && !absolute_enabled)
 339             SDL_WarpMouse(guest_x, guest_y);
 340     } else
 341         sdl_hide_cursor();
 342
 343     if (SDL_WM_GrabInput(SDL_GRAB_ON) == SDL_GRAB_ON) {
 344         gui_grab = 1;
 345         sdl_update_caption();
 346     } else
 347         sdl_show_cursor();
 348 }
 349
 350 static void sdl_grab_end(void)
 351 {
 352     SDL_WM_GrabInput(SDL_GRAB_OFF);
 353     gui_grab = 0;
 354     sdl_show_cursor();
 355     sdl_update_caption();
 356 }
 357
 358 static void sdl_send_mouse_event(int dx, int dy, int dz, int x, int y, int state)
 359 {
 360     int buttons;
 361     buttons = 0;
 362     if (state & SDL_BUTTON(SDL_BUTTON_LEFT))
 363         buttons |= MOUSE_EVENT_LBUTTON;
 364     if (state & SDL_BUTTON(SDL_BUTTON_RIGHT))
 365         buttons |= MOUSE_EVENT_RBUTTON;
 366     if (state & SDL_BUTTON(SDL_BUTTON_MIDDLE))
 367         buttons |= MOUSE_EVENT_MBUTTON;
 368
 369     if (kbd_mouse_is_absolute()) {
 370         if (!absolute_enabled) {
 371             sdl_hide_cursor();
 372             if (gui_grab) {
 373                 sdl_grab_end();
 374             }
 375             absolute_enabled = 1;
 376         }
 377
 378        dx = x * 0x7FFF / (width - 1);
 379        dy = y * 0x7FFF / (height - 1);
 380     } else if (absolute_enabled) {
 381         sdl_show_cursor();
 382         absolute_enabled = 0;
 383     } else if (guest_cursor) {
 384         x -= guest_x;
 385         y -= guest_y;
 386         guest_x += x;
 387         guest_y += y;
 388         dx = x;
 389         dy = y;
 390     }
 391
 392     kbd_mouse_event(dx, dy, dz, buttons);
 393 }
 394
 395 static void toggle_full_screen(DisplayState *ds)
 396 {
 397     gui_fullscreen = !gui_fullscreen;
 398     sdl_resize(ds);
 399     if (gui_fullscreen) {
 400         gui_saved_grab = gui_grab;
 401         sdl_grab_start();
 402     } else {
 403         if (!gui_saved_grab)
 404             sdl_grab_end();
 405     }
 406     vga_hw_invalidate();
 407     vga_hw_update();
 408 }
 409
 410 static void sdl_refresh(DisplayState *ds)
 411 {
 412     SDL_Event ev1, *ev = &ev1;
 413     int mod_state;
 414     int buttonstate = SDL_GetMouseState(NULL, NULL);
 415
 416     if (last_vm_running != vm_running) {
 417         last_vm_running = vm_running;
 418         sdl_update_caption();
 419     }
 420
 421     vga_hw_update();
 422     SDL_EnableUNICODE(!is_graphic_console());
 423
 424     while (SDL_PollEvent(ev)) {
 425         switch (ev->type) {
 426         case SDL_VIDEOEXPOSE:
 427             sdl_update(ds, 0, 0, real_screen->w, real_screen->h);
 428             break;
 429         case SDL_KEYDOWN:
 430         case SDL_KEYUP:
 431             if (ev->type == SDL_KEYDOWN) {
 432                 if (!alt_grab) {
 433                     mod_state = (SDL_GetModState() & gui_grab_code) ==
 434                                 gui_grab_code;
 435                 } else {
 436                     mod_state = (SDL_GetModState() & (gui_grab_code | KMOD_LSHIFT)) ==
 437                                 (gui_grab_code | KMOD_LSHIFT);
 438                 }
 439                 gui_key_modifier_pressed = mod_state;
 440                 if (gui_key_modifier_pressed) {
 441                     int keycode;
 442                     keycode = sdl_keyevent_to_keycode(&ev->key);
 443                     switch(keycode) {
 444                     case 0x21: /* 'f' key on US keyboard */
 445                         toggle_full_screen(ds);
 446                         gui_keysym = 1;
 447                         break;
 448                     case 0x02 ... 0x0a: /* '1' to '9' keys */
 449                         /* Reset the modifiers sent to the current console */
 450                         reset_keys();
 451                         console_select(keycode - 0x02);
 452                         if (!is_graphic_console()) {
 453                             /* display grab if going to a text console */
 454                             if (gui_grab)
 455                                 sdl_grab_end();
 456                         }
 457                         gui_keysym = 1;
 458                         break;
 459                     default:
 460                         break;
 461                     }
 462                 } else if (!is_graphic_console()) {
 463                     int keysym;
 464                     keysym = 0;
 465                     if (ev->key.keysym.mod & (KMOD_LCTRL | KMOD_RCTRL)) {
 466                         switch(ev->key.keysym.sym) {
 467                         case SDLK_UP: keysym = QEMU_KEY_CTRL_UP; break;
 468                         case SDLK_DOWN: keysym = QEMU_KEY_CTRL_DOWN; break;
 469                         case SDLK_LEFT: keysym = QEMU_KEY_CTRL_LEFT; break;
 470                         case SDLK_RIGHT: keysym = QEMU_KEY_CTRL_RIGHT; break;
 471                         case SDLK_HOME: keysym = QEMU_KEY_CTRL_HOME; break;
 472                         case SDLK_END: keysym = QEMU_KEY_CTRL_END; break;
 473                         case SDLK_PAGEUP: keysym = QEMU_KEY_CTRL_PAGEUP; break;
 474                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_CTRL_PAGEDOWN; break;
 475                         default: break;
 476                         }
 477                     } else {
 478                         switch(ev->key.keysym.sym) {
 479                         case SDLK_UP: keysym = QEMU_KEY_UP; break;
 480                         case SDLK_DOWN: keysym = QEMU_KEY_DOWN; break;
 481                         case SDLK_LEFT: keysym = QEMU_KEY_LEFT; break;
 482                         case SDLK_RIGHT: keysym = QEMU_KEY_RIGHT; break;
 483                         case SDLK_HOME: keysym = QEMU_KEY_HOME; break;
 484                         case SDLK_END: keysym = QEMU_KEY_END; break;
 485                         case SDLK_PAGEUP: keysym = QEMU_KEY_PAGEUP; break;
 486                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_PAGEDOWN; break;
 487                         case SDLK_BACKSPACE: keysym = QEMU_KEY_BACKSPACE; break;
 488                         case SDLK_DELETE: keysym = QEMU_KEY_DELETE; break;
 489                         default: break;
 490                         }
 491                     }
 492                     if (keysym) {
 493                         kbd_put_keysym(keysym);
 494                     } else if (ev->key.keysym.unicode != 0) {
 495                         kbd_put_keysym(ev->key.keysym.unicode);
 496                     }
 497                 }
 498             } else if (ev->type == SDL_KEYUP) {
 499                 if (!alt_grab) {
 500                     mod_state = (ev->key.keysym.mod & gui_grab_code);
 501                 } else {
 502                     mod_state = (ev->key.keysym.mod &
 503                                  (gui_grab_code | KMOD_LSHIFT));
 504                 }
 505                 if (!mod_state) {
 506                     if (gui_key_modifier_pressed) {
 507                         gui_key_modifier_pressed = 0;
 508                         if (gui_keysym == 0) {
 509                             /* exit/enter grab if pressing Ctrl-Alt */
 510                             if (!gui_grab) {
 511                                 /* if the application is not active,
 512                                    do not try to enter grab state. It
 513                                    prevents
 514                                    'SDL_WM_GrabInput(SDL_GRAB_ON)'
 515                                    from blocking all the application
 516                                    (SDL bug). */
 517                                 if (SDL_GetAppState() & SDL_APPACTIVE)
 518                                     sdl_grab_start();
 519                             } else {
 520                                 sdl_grab_end();
 521                             }
 522                             /* SDL does not send back all the
 523                                modifiers key, so we must correct it */
 524                             reset_keys();
 525                             break;
 526                         }
 527                         gui_keysym = 0;
 528                     }
 529                 }
 530             }
 531             if (is_graphic_console() && !gui_keysym)
 532                 sdl_process_key(&ev->key);
 533             break;
 534         case SDL_QUIT:
 535             if (!no_quit)
 536                 qemu_system_shutdown_request();
 537             break;
 538         case SDL_MOUSEMOTION:
 539             if (gui_grab || kbd_mouse_is_absolute() ||
 540                 absolute_enabled) {
 541                 sdl_send_mouse_event(ev->motion.xrel, ev->motion.yrel, 0,
 542                        ev->motion.x, ev->motion.y, ev->motion.state);
 543             }
 544             break;
 545         case SDL_MOUSEBUTTONDOWN:
 546         case SDL_MOUSEBUTTONUP:
 547             {
 548                 SDL_MouseButtonEvent *bev = &ev->button;
 549                 if (!gui_grab && !kbd_mouse_is_absolute()) {
 550                     if (ev->type == SDL_MOUSEBUTTONDOWN &&
 551                         (bev->button == SDL_BUTTON_LEFT)) {
 552                         /* start grabbing all events */
 553                         sdl_grab_start();
 554                     }
 555                 } else {
 556                     int dz;
 557                     dz = 0;
 558                     if (ev->type == SDL_MOUSEBUTTONDOWN) {
 559                         buttonstate |= SDL_BUTTON(bev->button);
 560                     } else {
 561                         buttonstate &= ~SDL_BUTTON(bev->button);
 562                     }
 563 #ifdef SDL_BUTTON_WHEELUP
 564                     if (bev->button == SDL_BUTTON_WHEELUP && ev->type == SDL_MOUSEBUTTONDOWN) {
 565                         dz = -1;
 566                     } else if (bev->button == SDL_BUTTON_WHEELDOWN && ev->type == SDL_MOUSEBUTTONDOWN) {
 567                         dz = 1;
 568                     }
 569 #endif
 570                     sdl_send_mouse_event(0, 0, dz, bev->x, bev->y, buttonstate);
 571                 }
 572             }
 573             break;
 574         case SDL_ACTIVEEVENT:
 575             if (gui_grab && ev->active.state == SDL_APPINPUTFOCUS &&
 576                 !ev->active.gain && !gui_fullscreen_initial_grab) {
 577                 sdl_grab_end();
 578             }
 579             if (ev->active.state & SDL_APPACTIVE) {
 580                 if (ev->active.gain) {
 581                     /* Back to default interval */
 582                     dcl->gui_timer_interval = 0;
 583                     dcl->idle = 0;
 584                 } else {
 585                     /* Sleeping interval */
 586                     dcl->gui_timer_interval = 500;
 587                     dcl->idle = 1;
 588                 }
 589             }
 590             break;
 591         default:
 592             break;
 593         }
 594     }
 595 }
 596
 597 static void sdl_fill(DisplayState *ds, int x, int y, int w, int h, uint32_t c)
 598 {
 599     SDL_Rect dst = { x, y, w, h };
 600     SDL_FillRect(real_screen, &dst, c);
 601 }
 602
 603 static void sdl_mouse_warp(int x, int y, int on)
 604 {
 605     if (on) {
 606         if (!guest_cursor)
 607             sdl_show_cursor();
 608         if (gui_grab || kbd_mouse_is_absolute() || absolute_enabled) {
 609             SDL_SetCursor(guest_sprite);
 610             if (!kbd_mouse_is_absolute() && !absolute_enabled)
 611                 SDL_WarpMouse(x, y);
 612         }
 613     } else if (gui_grab)
 614         sdl_hide_cursor();
 615     guest_cursor = on;
 616     guest_x = x, guest_y = y;
 617 }
 618
 619 static void sdl_mouse_define(int width, int height, int bpp,
 620                              int hot_x, int hot_y,
 621                              uint8_t *image, uint8_t *mask)
 622 {
 623     uint8_t sprite[256], *line;
 624     int x, y, dst, bypl, src = 0;
 625     if (guest_sprite)
 626         SDL_FreeCursor(guest_sprite);
 627
 628     memset(sprite, 0, 256);
 629     bypl = ((width * bpp + 31) >> 5) << 2;
 630     for (y = 0, dst = 0; y < height; y ++, image += bypl) {
 631         line = image;
 632         for (x = 0; x < width; x ++, dst ++) {
 633             switch (bpp) {
 634             case 24:
 635                 src = *(line ++); src |= *(line ++); src |= *(line ++);
 636                 break;
 637             case 16:
 638             case 15:
 639                 src = *(line ++); src |= *(line ++);
 640                 break;
 641             case 8:
 642                 src = *(line ++);
 643                 break;
 644             case 4:
 645                 src = 0xf & (line[x >> 1] >> ((x & 1)) << 2);
 646                 break;
 647             case 2:
 648                 src = 3 & (line[x >> 2] >> ((x & 3)) << 1);
 649                 break;
 650             case 1:
 651                 src = 1 & (line[x >> 3] >> (x & 7));
 652                 break;
 653             }
 654             if (!src)
 655                 sprite[dst >> 3] |= (1 << (~dst & 7)) & mask[dst >> 3];
 656         }
 657     }
 658     guest_sprite = SDL_CreateCursor(sprite, mask, width, height, hot_x, hot_y);
 659
 660     if (guest_cursor &&
 661             (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
 662         SDL_SetCursor(guest_sprite);
 663 }
 664
 665 static void sdl_cleanup(void)
 666 {
 667     if (guest_sprite)
 668         SDL_FreeCursor(guest_sprite);
 669     SDL_Quit();
 670 }
 671
 672 void sdl_display_init(DisplayState *ds, int full_screen, int no_frame)
 673 {
 674     int flags;
 675     uint8_t data = 0;
 676
 677 #if defined(__APPLE__)
 678     /* always use generic keymaps */
 679     if (!keyboard_layout)
 680         keyboard_layout = "en-us";
 681 #endif
 682     if(keyboard_layout) {
 683         kbd_layout = init_keyboard_layout(keyboard_layout);
 684         if (!kbd_layout)
 685             exit(1);
 686     }
 687
 688     if (no_frame)
 689         gui_noframe = 1;
 690
 691     flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
 692     if (SDL_Init (flags)) {
 693         fprintf(stderr, "Could not initialize SDL - exiting\n");
 694         exit(1);
 695     }
 696
 697     dcl = qemu_mallocz(sizeof(DisplayChangeListener));
 698     dcl->dpy_update = sdl_update;
 699     dcl->dpy_resize = sdl_resize;
 700     dcl->dpy_refresh = sdl_refresh;
 701     dcl->dpy_setdata = sdl_setdata;
 702     dcl->dpy_fill = sdl_fill;
 703     ds->mouse_set = sdl_mouse_warp;
 704     ds->cursor_define = sdl_mouse_define;
 705     register_displaychangelistener(ds, dcl);
 706
 707     sdl_update_caption();
 708     SDL_EnableKeyRepeat(250, 50);
 709     gui_grab = 0;
 710
 711     sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
 712     sdl_cursor_normal = SDL_GetCursor();
 713
 714     atexit(sdl_cleanup);
 715     if (full_screen) {
 716         gui_fullscreen = 1;
 717         gui_fullscreen_initial_grab = 1;
 718         sdl_grab_start();
 719     }
 720 }