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 <SDL.h>
  25 #include <SDL_syswm.h>
  26
  27 #ifndef _WIN32
  28 #include <signal.h>
  29 #endif
  30
  31 #include "qemu-common.h"
  32 #include "console.h"
  33 #include "sysemu.h"
  34 #include "x_keymap.h"
  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 static uint8_t allocator;
  57 static uint8_t hostbpp;
  58
  59 static void sdl_update(DisplayState *ds, int x, int y, int w, int h)
  60 {
  61     //    printf("updating x=%d y=%d w=%d h=%d\n", x, y, w, h);
  62     if (guest_screen) {
  63         SDL_Rect rec;
  64         rec.x = x;
  65         rec.y = y;
  66         rec.w = w;
  67         rec.h = h;
  68         SDL_BlitSurface(guest_screen, &rec, real_screen, &rec);
  69     }
  70     SDL_UpdateRect(real_screen, x, y, w, h);
  71 }
  72
  73 static void sdl_setdata(DisplayState *ds)
  74 {
  75     SDL_Rect rec;
  76     rec.x = 0;
  77     rec.y = 0;
  78     rec.w = real_screen->w;
  79     rec.h = real_screen->h;
  80
  81     if (guest_screen != NULL) SDL_FreeSurface(guest_screen);
  82
  83     guest_screen = SDL_CreateRGBSurfaceFrom(ds_get_data(ds), ds_get_width(ds), ds_get_height(ds),
  84                                             ds_get_bits_per_pixel(ds), ds_get_linesize(ds),
  85                                             ds->surface->pf.rmask, ds->surface->pf.gmask,
  86                                             ds->surface->pf.bmask, ds->surface->pf.amask);
  87 }
  88
  89 static void do_sdl_resize(int new_width, int new_height, int bpp)
  90 {
  91     int flags;
  92
  93     //    printf("resizing to %d %d\n", w, h);
  94
  95     flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
  96     if (gui_fullscreen)
  97         flags |= SDL_FULLSCREEN;
  98     if (gui_noframe)
  99         flags |= SDL_NOFRAME;
 100
 101     width = new_width;
 102     height = new_height;
 103     real_screen = SDL_SetVideoMode(width, height, bpp, flags);
 104     if (!real_screen) {
 105         fprintf(stderr, "Could not open SDL display\n");
 106         exit(1);
 107     }
 108 }
 109
 110 static void sdl_resize(DisplayState *ds)
 111 {
 112     if  (!allocator) {
 113         do_sdl_resize(ds_get_width(ds), ds_get_height(ds), 0);
 114         sdl_setdata(ds);
 115     } else {
 116         if (guest_screen != NULL) {
 117             SDL_FreeSurface(guest_screen);
 118             guest_screen = NULL;
 119         }
 120     }
 121 }
 122
 123 static PixelFormat sdl_to_qemu_pixelformat(SDL_PixelFormat *sdl_pf)
 124 {
 125     PixelFormat qemu_pf;
 126
 127     memset(&qemu_pf, 0x00, sizeof(PixelFormat));
 128
 129     qemu_pf.bits_per_pixel = sdl_pf->BitsPerPixel;
 130     qemu_pf.bytes_per_pixel = sdl_pf->BytesPerPixel;
 131     qemu_pf.depth = (qemu_pf.bits_per_pixel) == 32 ? 24 : (qemu_pf.bits_per_pixel);
 132
 133     qemu_pf.rmask = sdl_pf->Rmask;
 134     qemu_pf.gmask = sdl_pf->Gmask;
 135     qemu_pf.bmask = sdl_pf->Bmask;
 136     qemu_pf.amask = sdl_pf->Amask;
 137
 138     qemu_pf.rshift = sdl_pf->Rshift;
 139     qemu_pf.gshift = sdl_pf->Gshift;
 140     qemu_pf.bshift = sdl_pf->Bshift;
 141     qemu_pf.ashift = sdl_pf->Ashift;
 142
 143     qemu_pf.rbits = 8 - sdl_pf->Rloss;
 144     qemu_pf.gbits = 8 - sdl_pf->Gloss;
 145     qemu_pf.bbits = 8 - sdl_pf->Bloss;
 146     qemu_pf.abits = 8 - sdl_pf->Aloss;
 147
 148     qemu_pf.rmax = ((1 << qemu_pf.rbits) - 1);
 149     qemu_pf.gmax = ((1 << qemu_pf.gbits) - 1);
 150     qemu_pf.bmax = ((1 << qemu_pf.bbits) - 1);
 151     qemu_pf.amax = ((1 << qemu_pf.abits) - 1);
 152
 153     return qemu_pf;
 154 }
 155
 156 static DisplaySurface* sdl_create_displaysurface(int width, int height)
 157 {
 158     DisplaySurface *surface = (DisplaySurface*) qemu_mallocz(sizeof(DisplaySurface));
 159     if (surface == NULL) {
 160         fprintf(stderr, "sdl_create_displaysurface: malloc failed\n");
 161         exit(1);
 162     }
 163
 164     surface->width = width;
 165     surface->height = height;
 166
 167     if (hostbpp == 16)
 168         do_sdl_resize(width, height, 16);
 169     else
 170         do_sdl_resize(width, height, 32);
 171
 172     surface->pf = sdl_to_qemu_pixelformat(real_screen->format);
 173     surface->linesize = real_screen->pitch;
 174     surface->data = real_screen->pixels;
 175
 176 #ifdef WORDS_BIGENDIAN
 177     surface->flags = QEMU_ALLOCATED_FLAG | QEMU_BIG_ENDIAN_FLAG;
 178 #else
 179     surface->flags = QEMU_ALLOCATED_FLAG;
 180 #endif
 181     allocator = 1;
 182
 183     return surface;
 184 }
 185
 186 static void sdl_free_displaysurface(DisplaySurface *surface)
 187 {
 188     allocator = 0;
 189     if (surface == NULL)
 190         return;
 191     qemu_free(surface);
 192 }
 193
 194 static DisplaySurface* sdl_resize_displaysurface(DisplaySurface *surface, int width, int height)
 195 {
 196     sdl_free_displaysurface(surface);
 197     return sdl_create_displaysurface(width, height);
 198 }
 199
 200 /* generic keyboard conversion */
 201
 202 #include "sdl_keysym.h"
 203
 204 static kbd_layout_t *kbd_layout = NULL;
 205
 206 static uint8_t sdl_keyevent_to_keycode_generic(const SDL_KeyboardEvent *ev)
 207 {
 208     int keysym;
 209     /* workaround for X11+SDL bug with AltGR */
 210     keysym = ev->keysym.sym;
 211     if (keysym == 0 && ev->keysym.scancode == 113)
 212         keysym = SDLK_MODE;
 213     /* For Japanese key '\' and '|' */
 214     if (keysym == 92 && ev->keysym.scancode == 133) {
 215         keysym = 0xa5;
 216     }
 217     return keysym2scancode(kbd_layout, keysym);
 218 }
 219
 220 /* specific keyboard conversions from scan codes */
 221
 222 #if defined(_WIN32)
 223
 224 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 225 {
 226     return ev->keysym.scancode;
 227 }
 228
 229 #else
 230
 231 #if defined(SDL_VIDEO_DRIVER_X11)
 232 #include <X11/XKBlib.h>
 233
 234 static int check_for_evdev(void)
 235 {
 236     SDL_SysWMinfo info;
 237     XkbDescPtr desc;
 238     int has_evdev = 0;
 239     const char *keycodes;
 240
 241     SDL_VERSION(&info.version);
 242     if (!SDL_GetWMInfo(&info))
 243         return 0;
 244
 245     desc = XkbGetKeyboard(info.info.x11.display,
 246                           XkbGBN_AllComponentsMask,
 247                           XkbUseCoreKbd);
 248     if (desc == NULL || desc->names == NULL)
 249         return 0;
 250
 251     keycodes = XGetAtomName(info.info.x11.display, desc->names->keycodes);
 252     if (keycodes == NULL)
 253         fprintf(stderr, "could not lookup keycode name\n");
 254     else if (strstart(keycodes, "evdev", NULL))
 255         has_evdev = 1;
 256     else if (!strstart(keycodes, "xfree86", NULL))
 257         fprintf(stderr,
 258                 "unknown keycodes `%s', please report to qemu-devel@nongnu.org\n",
 259                 keycodes);
 260
 261     XkbFreeClientMap(desc, XkbGBN_AllComponentsMask, True);
 262
 263     return has_evdev;
 264 }
 265 #else
 266 static int check_for_evdev(void)
 267 {
 268         return 0;
 269 }
 270 #endif
 271
 272 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 273 {
 274     int keycode;
 275     static int has_evdev = -1;
 276
 277     if (has_evdev == -1)
 278         has_evdev = check_for_evdev();
 279
 280     keycode = ev->keysym.scancode;
 281
 282     if (keycode < 9) {
 283         keycode = 0;
 284     } else if (keycode < 97) {
 285         keycode -= 8; /* just an offset */
 286     } else if (keycode < 158) {
 287         /* use conversion table */
 288         if (has_evdev)
 289             keycode = translate_evdev_keycode(keycode - 97);
 290         else
 291             keycode = translate_xfree86_keycode(keycode - 97);
 292     } else if (keycode == 208) { /* Hiragana_Katakana */
 293         keycode = 0x70;
 294     } else if (keycode == 211) { /* backslash */
 295         keycode = 0x73;
 296     } else {
 297         keycode = 0;
 298     }
 299     return keycode;
 300 }
 301
 302 #endif
 303
 304 static void reset_keys(void)
 305 {
 306     int i;
 307     for(i = 0; i < 256; i++) {
 308         if (modifiers_state[i]) {
 309             if (i & 0x80)
 310                 kbd_put_keycode(0xe0);
 311             kbd_put_keycode(i | 0x80);
 312             modifiers_state[i] = 0;
 313         }
 314     }
 315 }
 316
 317 static void sdl_process_key(SDL_KeyboardEvent *ev)
 318 {
 319     int keycode, v;
 320
 321     if (ev->keysym.sym == SDLK_PAUSE) {
 322         /* specific case */
 323         v = 0;
 324         if (ev->type == SDL_KEYUP)
 325             v |= 0x80;
 326         kbd_put_keycode(0xe1);
 327         kbd_put_keycode(0x1d | v);
 328         kbd_put_keycode(0x45 | v);
 329         return;
 330     }
 331
 332     if (kbd_layout) {
 333         keycode = sdl_keyevent_to_keycode_generic(ev);
 334     } else {
 335         keycode = sdl_keyevent_to_keycode(ev);
 336     }
 337
 338     switch(keycode) {
 339     case 0x00:
 340         /* sent when leaving window: reset the modifiers state */
 341         reset_keys();
 342         return;
 343     case 0x2a:                          /* Left Shift */
 344     case 0x36:                          /* Right Shift */
 345     case 0x1d:                          /* Left CTRL */
 346     case 0x9d:                          /* Right CTRL */
 347     case 0x38:                          /* Left ALT */
 348     case 0xb8:                         /* Right ALT */
 349         if (ev->type == SDL_KEYUP)
 350             modifiers_state[keycode] = 0;
 351         else
 352             modifiers_state[keycode] = 1;
 353         break;
 354     case 0x45: /* num lock */
 355     case 0x3a: /* caps lock */
 356         /* SDL does not send the key up event, so we generate it */
 357         kbd_put_keycode(keycode);
 358         kbd_put_keycode(keycode | 0x80);
 359         return;
 360     }
 361
 362     /* now send the key code */
 363     if (keycode & 0x80)
 364         kbd_put_keycode(0xe0);
 365     if (ev->type == SDL_KEYUP)
 366         kbd_put_keycode(keycode | 0x80);
 367     else
 368         kbd_put_keycode(keycode & 0x7f);
 369 }
 370
 371 static void sdl_update_caption(void)
 372 {
 373     char buf[1024];
 374     const char *status = "";
 375
 376     if (!vm_running)
 377         status = " [Stopped]";
 378     else if (gui_grab) {
 379         if (!alt_grab)
 380             status = " - Press Ctrl-Alt to exit grab";
 381         else
 382             status = " - Press Ctrl-Alt-Shift to exit grab";
 383     }
 384
 385     if (qemu_name)
 386         snprintf(buf, sizeof(buf), "QEMU (%s)%s", qemu_name, status);
 387     else
 388         snprintf(buf, sizeof(buf), "QEMU%s", status);
 389
 390     SDL_WM_SetCaption(buf, "QEMU");
 391 }
 392
 393 static void sdl_hide_cursor(void)
 394 {
 395     if (!cursor_hide)
 396         return;
 397
 398     if (kbd_mouse_is_absolute()) {
 399         SDL_ShowCursor(1);
 400         SDL_SetCursor(sdl_cursor_hidden);
 401     } else {
 402         SDL_ShowCursor(0);
 403     }
 404 }
 405
 406 static void sdl_show_cursor(void)
 407 {
 408     if (!cursor_hide)
 409         return;
 410
 411     if (!kbd_mouse_is_absolute()) {
 412         SDL_ShowCursor(1);
 413         if (guest_cursor &&
 414                 (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
 415             SDL_SetCursor(guest_sprite);
 416         else
 417             SDL_SetCursor(sdl_cursor_normal);
 418     }
 419 }
 420
 421 static void sdl_grab_start(void)
 422 {
 423     if (guest_cursor) {
 424         SDL_SetCursor(guest_sprite);
 425         if (!kbd_mouse_is_absolute() && !absolute_enabled)
 426             SDL_WarpMouse(guest_x, guest_y);
 427     } else
 428         sdl_hide_cursor();
 429
 430     if (SDL_WM_GrabInput(SDL_GRAB_ON) == SDL_GRAB_ON) {
 431         gui_grab = 1;
 432         sdl_update_caption();
 433     } else
 434         sdl_show_cursor();
 435 }
 436
 437 static void sdl_grab_end(void)
 438 {
 439     SDL_WM_GrabInput(SDL_GRAB_OFF);
 440     gui_grab = 0;
 441     sdl_show_cursor();
 442     sdl_update_caption();
 443 }
 444
 445 static void sdl_send_mouse_event(int dx, int dy, int dz, int x, int y, int state)
 446 {
 447     int buttons;
 448     buttons = 0;
 449     if (state & SDL_BUTTON(SDL_BUTTON_LEFT))
 450         buttons |= MOUSE_EVENT_LBUTTON;
 451     if (state & SDL_BUTTON(SDL_BUTTON_RIGHT))
 452         buttons |= MOUSE_EVENT_RBUTTON;
 453     if (state & SDL_BUTTON(SDL_BUTTON_MIDDLE))
 454         buttons |= MOUSE_EVENT_MBUTTON;
 455
 456     if (kbd_mouse_is_absolute()) {
 457         if (!absolute_enabled) {
 458             sdl_hide_cursor();
 459             if (gui_grab) {
 460                 sdl_grab_end();
 461             }
 462             absolute_enabled = 1;
 463         }
 464
 465        dx = x * 0x7FFF / (width - 1);
 466        dy = y * 0x7FFF / (height - 1);
 467     } else if (absolute_enabled) {
 468         sdl_show_cursor();
 469         absolute_enabled = 0;
 470     } else if (guest_cursor) {
 471         x -= guest_x;
 472         y -= guest_y;
 473         guest_x += x;
 474         guest_y += y;
 475         dx = x;
 476         dy = y;
 477     }
 478
 479     kbd_mouse_event(dx, dy, dz, buttons);
 480 }
 481
 482 static void toggle_full_screen(DisplayState *ds)
 483 {
 484     gui_fullscreen = !gui_fullscreen;
 485     do_sdl_resize(real_screen->w, real_screen->h, real_screen->format->BitsPerPixel);
 486     if (gui_fullscreen) {
 487         gui_saved_grab = gui_grab;
 488         sdl_grab_start();
 489     } else {
 490         if (!gui_saved_grab)
 491             sdl_grab_end();
 492     }
 493     vga_hw_invalidate();
 494     vga_hw_update();
 495 }
 496
 497 static void sdl_refresh(DisplayState *ds)
 498 {
 499     SDL_Event ev1, *ev = &ev1;
 500     int mod_state;
 501     int buttonstate = SDL_GetMouseState(NULL, NULL);
 502
 503     if (last_vm_running != vm_running) {
 504         last_vm_running = vm_running;
 505         sdl_update_caption();
 506     }
 507
 508     vga_hw_update();
 509     SDL_EnableUNICODE(!is_graphic_console());
 510
 511     while (SDL_PollEvent(ev)) {
 512         switch (ev->type) {
 513         case SDL_VIDEOEXPOSE:
 514             sdl_update(ds, 0, 0, real_screen->w, real_screen->h);
 515             break;
 516         case SDL_KEYDOWN:
 517         case SDL_KEYUP:
 518             if (ev->type == SDL_KEYDOWN) {
 519                 if (!alt_grab) {
 520                     mod_state = (SDL_GetModState() & gui_grab_code) ==
 521                                 gui_grab_code;
 522                 } else {
 523                     mod_state = (SDL_GetModState() & (gui_grab_code | KMOD_LSHIFT)) ==
 524                                 (gui_grab_code | KMOD_LSHIFT);
 525                 }
 526                 gui_key_modifier_pressed = mod_state;
 527                 if (gui_key_modifier_pressed) {
 528                     int keycode;
 529                     keycode = sdl_keyevent_to_keycode(&ev->key);
 530                     switch(keycode) {
 531                     case 0x21: /* 'f' key on US keyboard */
 532                         toggle_full_screen(ds);
 533                         gui_keysym = 1;
 534                         break;
 535                     case 0x02 ... 0x0a: /* '1' to '9' keys */
 536                         /* Reset the modifiers sent to the current console */
 537                         reset_keys();
 538                         console_select(keycode - 0x02);
 539                         if (!is_graphic_console()) {
 540                             /* display grab if going to a text console */
 541                             if (gui_grab)
 542                                 sdl_grab_end();
 543                         }
 544                         gui_keysym = 1;
 545                         break;
 546                     default:
 547                         break;
 548                     }
 549                 } else if (!is_graphic_console()) {
 550                     int keysym;
 551                     keysym = 0;
 552                     if (ev->key.keysym.mod & (KMOD_LCTRL | KMOD_RCTRL)) {
 553                         switch(ev->key.keysym.sym) {
 554                         case SDLK_UP: keysym = QEMU_KEY_CTRL_UP; break;
 555                         case SDLK_DOWN: keysym = QEMU_KEY_CTRL_DOWN; break;
 556                         case SDLK_LEFT: keysym = QEMU_KEY_CTRL_LEFT; break;
 557                         case SDLK_RIGHT: keysym = QEMU_KEY_CTRL_RIGHT; break;
 558                         case SDLK_HOME: keysym = QEMU_KEY_CTRL_HOME; break;
 559                         case SDLK_END: keysym = QEMU_KEY_CTRL_END; break;
 560                         case SDLK_PAGEUP: keysym = QEMU_KEY_CTRL_PAGEUP; break;
 561                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_CTRL_PAGEDOWN; break;
 562                         default: break;
 563                         }
 564                     } else {
 565                         switch(ev->key.keysym.sym) {
 566                         case SDLK_UP: keysym = QEMU_KEY_UP; break;
 567                         case SDLK_DOWN: keysym = QEMU_KEY_DOWN; break;
 568                         case SDLK_LEFT: keysym = QEMU_KEY_LEFT; break;
 569                         case SDLK_RIGHT: keysym = QEMU_KEY_RIGHT; break;
 570                         case SDLK_HOME: keysym = QEMU_KEY_HOME; break;
 571                         case SDLK_END: keysym = QEMU_KEY_END; break;
 572                         case SDLK_PAGEUP: keysym = QEMU_KEY_PAGEUP; break;
 573                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_PAGEDOWN; break;
 574                         case SDLK_BACKSPACE: keysym = QEMU_KEY_BACKSPACE; break;
 575                         case SDLK_DELETE: keysym = QEMU_KEY_DELETE; break;
 576                         default: break;
 577                         }
 578                     }
 579                     if (keysym) {
 580                         kbd_put_keysym(keysym);
 581                     } else if (ev->key.keysym.unicode != 0) {
 582                         kbd_put_keysym(ev->key.keysym.unicode);
 583                     }
 584                 }
 585             } else if (ev->type == SDL_KEYUP) {
 586                 if (!alt_grab) {
 587                     mod_state = (ev->key.keysym.mod & gui_grab_code);
 588                 } else {
 589                     mod_state = (ev->key.keysym.mod &
 590                                  (gui_grab_code | KMOD_LSHIFT));
 591                 }
 592                 if (!mod_state) {
 593                     if (gui_key_modifier_pressed) {
 594                         gui_key_modifier_pressed = 0;
 595                         if (gui_keysym == 0) {
 596                             /* exit/enter grab if pressing Ctrl-Alt */
 597                             if (!gui_grab) {
 598                                 /* if the application is not active,
 599                                    do not try to enter grab state. It
 600                                    prevents
 601                                    'SDL_WM_GrabInput(SDL_GRAB_ON)'
 602                                    from blocking all the application
 603                                    (SDL bug). */
 604                                 if (SDL_GetAppState() & SDL_APPACTIVE)
 605                                     sdl_grab_start();
 606                             } else {
 607                                 sdl_grab_end();
 608                             }
 609                             /* SDL does not send back all the
 610                                modifiers key, so we must correct it */
 611                             reset_keys();
 612                             break;
 613                         }
 614                         gui_keysym = 0;
 615                     }
 616                 }
 617             }
 618             if (is_graphic_console() && !gui_keysym)
 619                 sdl_process_key(&ev->key);
 620             break;
 621         case SDL_QUIT:
 622             if (!no_quit)
 623                 qemu_system_shutdown_request();
 624             break;
 625         case SDL_MOUSEMOTION:
 626             if (gui_grab || kbd_mouse_is_absolute() ||
 627                 absolute_enabled) {
 628                 sdl_send_mouse_event(ev->motion.xrel, ev->motion.yrel, 0,
 629                        ev->motion.x, ev->motion.y, ev->motion.state);
 630             }
 631             break;
 632         case SDL_MOUSEBUTTONDOWN:
 633         case SDL_MOUSEBUTTONUP:
 634             {
 635                 SDL_MouseButtonEvent *bev = &ev->button;
 636                 if (!gui_grab && !kbd_mouse_is_absolute()) {
 637                     if (ev->type == SDL_MOUSEBUTTONDOWN &&
 638                         (bev->button == SDL_BUTTON_LEFT)) {
 639                         /* start grabbing all events */
 640                         sdl_grab_start();
 641                     }
 642                 } else {
 643                     int dz;
 644                     dz = 0;
 645                     if (ev->type == SDL_MOUSEBUTTONDOWN) {
 646                         buttonstate |= SDL_BUTTON(bev->button);
 647                     } else {
 648                         buttonstate &= ~SDL_BUTTON(bev->button);
 649                     }
 650 #ifdef SDL_BUTTON_WHEELUP
 651                     if (bev->button == SDL_BUTTON_WHEELUP && ev->type == SDL_MOUSEBUTTONDOWN) {
 652                         dz = -1;
 653                     } else if (bev->button == SDL_BUTTON_WHEELDOWN && ev->type == SDL_MOUSEBUTTONDOWN) {
 654                         dz = 1;
 655                     }
 656 #endif
 657                     sdl_send_mouse_event(0, 0, dz, bev->x, bev->y, buttonstate);
 658                 }
 659             }
 660             break;
 661         case SDL_ACTIVEEVENT:
 662             if (gui_grab && ev->active.state == SDL_APPINPUTFOCUS &&
 663                 !ev->active.gain && !gui_fullscreen_initial_grab) {
 664                 sdl_grab_end();
 665             }
 666             if (ev->active.state & SDL_APPACTIVE) {
 667                 if (ev->active.gain) {
 668                     /* Back to default interval */
 669                     dcl->gui_timer_interval = 0;
 670                     dcl->idle = 0;
 671                 } else {
 672                     /* Sleeping interval */
 673                     dcl->gui_timer_interval = 500;
 674                     dcl->idle = 1;
 675                 }
 676             }
 677             break;
 678         default:
 679             break;
 680         }
 681     }
 682 }
 683
 684 static void sdl_fill(DisplayState *ds, int x, int y, int w, int h, uint32_t c)
 685 {
 686     SDL_Rect dst = { x, y, w, h };
 687     SDL_FillRect(real_screen, &dst, c);
 688 }
 689
 690 static void sdl_mouse_warp(int x, int y, int on)
 691 {
 692     if (on) {
 693         if (!guest_cursor)
 694             sdl_show_cursor();
 695         if (gui_grab || kbd_mouse_is_absolute() || absolute_enabled) {
 696             SDL_SetCursor(guest_sprite);
 697             if (!kbd_mouse_is_absolute() && !absolute_enabled)
 698                 SDL_WarpMouse(x, y);
 699         }
 700     } else if (gui_grab)
 701         sdl_hide_cursor();
 702     guest_cursor = on;
 703     guest_x = x, guest_y = y;
 704 }
 705
 706 static void sdl_mouse_define(int width, int height, int bpp,
 707                              int hot_x, int hot_y,
 708                              uint8_t *image, uint8_t *mask)
 709 {
 710     uint8_t sprite[256], *line;
 711     int x, y, dst, bypl, src = 0;
 712     if (guest_sprite)
 713         SDL_FreeCursor(guest_sprite);
 714
 715     memset(sprite, 0, 256);
 716     bypl = ((width * bpp + 31) >> 5) << 2;
 717     for (y = 0, dst = 0; y < height; y ++, image += bypl) {
 718         line = image;
 719         for (x = 0; x < width; x ++, dst ++) {
 720             switch (bpp) {
 721             case 24:
 722                 src = *(line ++); src |= *(line ++); src |= *(line ++);
 723                 break;
 724             case 16:
 725             case 15:
 726                 src = *(line ++); src |= *(line ++);
 727                 break;
 728             case 8:
 729                 src = *(line ++);
 730                 break;
 731             case 4:
 732                 src = 0xf & (line[x >> 1] >> ((x & 1)) << 2);
 733                 break;
 734             case 2:
 735                 src = 3 & (line[x >> 2] >> ((x & 3)) << 1);
 736                 break;
 737             case 1:
 738                 src = 1 & (line[x >> 3] >> (x & 7));
 739                 break;
 740             }
 741             if (!src)
 742                 sprite[dst >> 3] |= (1 << (~dst & 7)) & mask[dst >> 3];
 743         }
 744     }
 745     guest_sprite = SDL_CreateCursor(sprite, mask, width, height, hot_x, hot_y);
 746
 747     if (guest_cursor &&
 748             (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
 749         SDL_SetCursor(guest_sprite);
 750 }
 751
 752 static void sdl_cleanup(void)
 753 {
 754     if (guest_sprite)
 755         SDL_FreeCursor(guest_sprite);
 756     SDL_Quit();
 757 }
 758
 759 void sdl_display_init(DisplayState *ds, int full_screen, int no_frame)
 760 {
 761     int flags;
 762     uint8_t data = 0;
 763     DisplayAllocator *da;
 764     const SDL_VideoInfo *vi;
 765
 766 #if defined(__APPLE__)
 767     /* always use generic keymaps */
 768     if (!keyboard_layout)
 769         keyboard_layout = "en-us";
 770 #endif
 771     if(keyboard_layout) {
 772         kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
 773         if (!kbd_layout)
 774             exit(1);
 775     }
 776
 777     if (no_frame)
 778         gui_noframe = 1;
 779
 780     flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
 781     if (SDL_Init (flags)) {
 782         fprintf(stderr, "Could not initialize SDL - exiting\n");
 783         exit(1);
 784     }
 785     vi = SDL_GetVideoInfo();
 786     hostbpp = vi->vfmt->BitsPerPixel;
 787
 788     dcl = qemu_mallocz(sizeof(DisplayChangeListener));
 789     dcl->dpy_update = sdl_update;
 790     dcl->dpy_resize = sdl_resize;
 791     dcl->dpy_refresh = sdl_refresh;
 792     dcl->dpy_setdata = sdl_setdata;
 793     dcl->dpy_fill = sdl_fill;
 794     ds->mouse_set = sdl_mouse_warp;
 795     ds->cursor_define = sdl_mouse_define;
 796     register_displaychangelistener(ds, dcl);
 797
 798     da = qemu_mallocz(sizeof(DisplayAllocator));
 799     da->create_displaysurface = sdl_create_displaysurface;
 800     da->resize_displaysurface = sdl_resize_displaysurface;
 801     da->free_displaysurface = sdl_free_displaysurface;
 802     if (register_displayallocator(ds, da) == da) {
 803         DisplaySurface *surf;
 804         surf = sdl_create_displaysurface(ds_get_width(ds), ds_get_height(ds));
 805         defaultallocator_free_displaysurface(ds->surface);
 806         ds->surface = surf;
 807         dpy_resize(ds);
 808     }
 809
 810     sdl_update_caption();
 811     SDL_EnableKeyRepeat(250, 50);
 812     gui_grab = 0;
 813
 814     sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
 815     sdl_cursor_normal = SDL_GetCursor();
 816
 817     atexit(sdl_cleanup);
 818     if (full_screen) {
 819         gui_fullscreen = 1;
 820         gui_fullscreen_initial_grab = 1;
 821         sdl_grab_start();
 822     }
 823 }