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 #include "sdl_zoom.h"
  36
  37 static DisplayChangeListener *dcl;
  38 static SDL_Surface *real_screen;
  39 static SDL_Surface *guest_screen = NULL;
  40 static int gui_grab; /* if true, all keyboard/mouse events are grabbed */
  41 static int last_vm_running;
  42 static int gui_saved_grab;
  43 static int gui_fullscreen;
  44 static int gui_noframe;
  45 static int gui_key_modifier_pressed;
  46 static int gui_keysym;
  47 static int gui_fullscreen_initial_grab;
  48 static int gui_grab_code = KMOD_LALT | KMOD_LCTRL;
  49 static uint8_t modifiers_state[256];
  50 static int width, height;
  51 static SDL_Cursor *sdl_cursor_normal;
  52 static SDL_Cursor *sdl_cursor_hidden;
  53 static int absolute_enabled = 0;
  54 static int guest_cursor = 0;
  55 static int guest_x, guest_y;
  56 static SDL_Cursor *guest_sprite = 0;
  57 static uint8_t allocator;
  58 static SDL_PixelFormat host_format;
  59 static int scaling_active = 0;
  60
  61 static void sdl_update(DisplayState *ds, int x, int y, int w, int h)
  62 {
  63     //    printf("updating x=%d y=%d w=%d h=%d\n", x, y, w, h);
  64     SDL_Rect rec;
  65     rec.x = x;
  66     rec.y = y;
  67     rec.w = w;
  68     rec.h = h;
  69
  70     if (guest_screen) {
  71         if (!scaling_active) {
  72             SDL_BlitSurface(guest_screen, &rec, real_screen, &rec);
  73         } else {
  74             if (sdl_zoom_blit(guest_screen, real_screen, SMOOTHING_ON, &rec) < 0) {
  75                 fprintf(stderr, "Zoom blit failed\n");
  76                 exit(1);
  77             }
  78         }
  79     }
  80     SDL_UpdateRect(real_screen, rec.x, rec.y, rec.w, rec.h);
  81 }
  82
  83 static void sdl_setdata(DisplayState *ds)
  84 {
  85     SDL_Rect rec;
  86     rec.x = 0;
  87     rec.y = 0;
  88     rec.w = real_screen->w;
  89     rec.h = real_screen->h;
  90
  91     if (guest_screen != NULL) SDL_FreeSurface(guest_screen);
  92
  93     guest_screen = SDL_CreateRGBSurfaceFrom(ds_get_data(ds), ds_get_width(ds), ds_get_height(ds),
  94                                             ds_get_bits_per_pixel(ds), ds_get_linesize(ds),
  95                                             ds->surface->pf.rmask, ds->surface->pf.gmask,
  96                                             ds->surface->pf.bmask, ds->surface->pf.amask);
  97 }
  98
  99 static void do_sdl_resize(int new_width, int new_height, int bpp)
 100 {
 101     int flags;
 102
 103     //    printf("resizing to %d %d\n", w, h);
 104
 105     flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL|SDL_RESIZABLE;
 106     if (gui_fullscreen)
 107         flags |= SDL_FULLSCREEN;
 108     if (gui_noframe)
 109         flags |= SDL_NOFRAME;
 110
 111     width = new_width;
 112     height = new_height;
 113     real_screen = SDL_SetVideoMode(width, height, bpp, flags);
 114     if (!real_screen) {
 115         fprintf(stderr, "Could not open SDL display\n");
 116         exit(1);
 117     }
 118 }
 119
 120 static void sdl_resize(DisplayState *ds)
 121 {
 122     if  (!allocator) {
 123         if (!scaling_active)
 124             do_sdl_resize(ds_get_width(ds), ds_get_height(ds), 0);
 125         else if (real_screen->format->BitsPerPixel != ds_get_bits_per_pixel(ds))
 126             do_sdl_resize(real_screen->w, real_screen->h, ds_get_bits_per_pixel(ds));
 127         sdl_setdata(ds);
 128     } else {
 129         if (guest_screen != NULL) {
 130             SDL_FreeSurface(guest_screen);
 131             guest_screen = NULL;
 132         }
 133     }
 134 }
 135
 136 static PixelFormat sdl_to_qemu_pixelformat(SDL_PixelFormat *sdl_pf)
 137 {
 138     PixelFormat qemu_pf;
 139
 140     memset(&qemu_pf, 0x00, sizeof(PixelFormat));
 141
 142     qemu_pf.bits_per_pixel = sdl_pf->BitsPerPixel;
 143     qemu_pf.bytes_per_pixel = sdl_pf->BytesPerPixel;
 144     qemu_pf.depth = (qemu_pf.bits_per_pixel) == 32 ? 24 : (qemu_pf.bits_per_pixel);
 145
 146     qemu_pf.rmask = sdl_pf->Rmask;
 147     qemu_pf.gmask = sdl_pf->Gmask;
 148     qemu_pf.bmask = sdl_pf->Bmask;
 149     qemu_pf.amask = sdl_pf->Amask;
 150
 151     qemu_pf.rshift = sdl_pf->Rshift;
 152     qemu_pf.gshift = sdl_pf->Gshift;
 153     qemu_pf.bshift = sdl_pf->Bshift;
 154     qemu_pf.ashift = sdl_pf->Ashift;
 155
 156     qemu_pf.rbits = 8 - sdl_pf->Rloss;
 157     qemu_pf.gbits = 8 - sdl_pf->Gloss;
 158     qemu_pf.bbits = 8 - sdl_pf->Bloss;
 159     qemu_pf.abits = 8 - sdl_pf->Aloss;
 160
 161     qemu_pf.rmax = ((1 << qemu_pf.rbits) - 1);
 162     qemu_pf.gmax = ((1 << qemu_pf.gbits) - 1);
 163     qemu_pf.bmax = ((1 << qemu_pf.bbits) - 1);
 164     qemu_pf.amax = ((1 << qemu_pf.abits) - 1);
 165
 166     return qemu_pf;
 167 }
 168
 169 static DisplaySurface* sdl_create_displaysurface(int width, int height)
 170 {
 171     DisplaySurface *surface = (DisplaySurface*) qemu_mallocz(sizeof(DisplaySurface));
 172     if (surface == NULL) {
 173         fprintf(stderr, "sdl_create_displaysurface: malloc failed\n");
 174         exit(1);
 175     }
 176
 177     surface->width = width;
 178     surface->height = height;
 179
 180     if (scaling_active) {
 181         if (host_format.BytesPerPixel != 2 && host_format.BytesPerPixel != 4) {
 182             surface->linesize = width * 4;
 183             surface->pf = qemu_default_pixelformat(32);
 184         } else {
 185             surface->linesize = width * host_format.BytesPerPixel;
 186             surface->pf = sdl_to_qemu_pixelformat(&host_format);
 187         }
 188 #ifdef HOST_WORDS_BIGENDIAN
 189         surface->flags = QEMU_ALLOCATED_FLAG | QEMU_BIG_ENDIAN_FLAG;
 190 #else
 191         surface->flags = QEMU_ALLOCATED_FLAG;
 192 #endif
 193         surface->data = (uint8_t*) qemu_mallocz(surface->linesize * surface->height);
 194
 195         return surface;
 196     }
 197
 198     if (host_format.BitsPerPixel == 16)
 199         do_sdl_resize(width, height, 16);
 200     else
 201         do_sdl_resize(width, height, 32);
 202
 203     surface->pf = sdl_to_qemu_pixelformat(real_screen->format);
 204     surface->linesize = real_screen->pitch;
 205     surface->data = real_screen->pixels;
 206
 207 #ifdef HOST_WORDS_BIGENDIAN
 208     surface->flags = QEMU_REALPIXELS_FLAG | QEMU_BIG_ENDIAN_FLAG;
 209 #else
 210     surface->flags = QEMU_REALPIXELS_FLAG;
 211 #endif
 212     allocator = 1;
 213
 214     return surface;
 215 }
 216
 217 static void sdl_free_displaysurface(DisplaySurface *surface)
 218 {
 219     allocator = 0;
 220     if (surface == NULL)
 221         return;
 222
 223     if (surface->flags & QEMU_ALLOCATED_FLAG)
 224         qemu_free(surface->data);
 225     qemu_free(surface);
 226 }
 227
 228 static DisplaySurface* sdl_resize_displaysurface(DisplaySurface *surface, int width, int height)
 229 {
 230     sdl_free_displaysurface(surface);
 231     return sdl_create_displaysurface(width, height);
 232 }
 233
 234 /* generic keyboard conversion */
 235
 236 #include "sdl_keysym.h"
 237
 238 static kbd_layout_t *kbd_layout = NULL;
 239
 240 static uint8_t sdl_keyevent_to_keycode_generic(const SDL_KeyboardEvent *ev)
 241 {
 242     int keysym;
 243     /* workaround for X11+SDL bug with AltGR */
 244     keysym = ev->keysym.sym;
 245     if (keysym == 0 && ev->keysym.scancode == 113)
 246         keysym = SDLK_MODE;
 247     /* For Japanese key '\' and '|' */
 248     if (keysym == 92 && ev->keysym.scancode == 133) {
 249         keysym = 0xa5;
 250     }
 251     return keysym2scancode(kbd_layout, keysym);
 252 }
 253
 254 /* specific keyboard conversions from scan codes */
 255
 256 #if defined(_WIN32)
 257
 258 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 259 {
 260     return ev->keysym.scancode;
 261 }
 262
 263 #else
 264
 265 #if defined(SDL_VIDEO_DRIVER_X11)
 266 #include <X11/XKBlib.h>
 267
 268 static int check_for_evdev(void)
 269 {
 270     SDL_SysWMinfo info;
 271     XkbDescPtr desc = NULL;
 272     int has_evdev = 0;
 273     char *keycodes = NULL;
 274
 275     SDL_VERSION(&info.version);
 276     if (!SDL_GetWMInfo(&info)) {
 277         return 0;
 278     }
 279     desc = XkbGetKeyboard(info.info.x11.display,
 280                           XkbGBN_AllComponentsMask,
 281                           XkbUseCoreKbd);
 282     if (desc && desc->names) {
 283         keycodes = XGetAtomName(info.info.x11.display, desc->names->keycodes);
 284         if (keycodes == NULL) {
 285             fprintf(stderr, "could not lookup keycode name\n");
 286         } else if (strstart(keycodes, "evdev", NULL)) {
 287             has_evdev = 1;
 288         } else if (!strstart(keycodes, "xfree86", NULL)) {
 289             fprintf(stderr, "unknown keycodes `%s', please report to "
 290                     "qemu-devel@nongnu.org\n", keycodes);
 291         }
 292     }
 293
 294     if (desc) {
 295         XkbFreeKeyboard(desc, XkbGBN_AllComponentsMask, True);
 296     }
 297     if (keycodes) {
 298         XFree(keycodes);
 299     }
 300     return has_evdev;
 301 }
 302 #else
 303 static int check_for_evdev(void)
 304 {
 305         return 0;
 306 }
 307 #endif
 308
 309 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 310 {
 311     int keycode;
 312     static int has_evdev = -1;
 313
 314     if (has_evdev == -1)
 315         has_evdev = check_for_evdev();
 316
 317     keycode = ev->keysym.scancode;
 318
 319     if (keycode < 9) {
 320         keycode = 0;
 321     } else if (keycode < 97) {
 322         keycode -= 8; /* just an offset */
 323     } else if (keycode < 158) {
 324         /* use conversion table */
 325         if (has_evdev)
 326             keycode = translate_evdev_keycode(keycode - 97);
 327         else
 328             keycode = translate_xfree86_keycode(keycode - 97);
 329     } else if (keycode == 208) { /* Hiragana_Katakana */
 330         keycode = 0x70;
 331     } else if (keycode == 211) { /* backslash */
 332         keycode = 0x73;
 333     } else {
 334         keycode = 0;
 335     }
 336     return keycode;
 337 }
 338
 339 #endif
 340
 341 static void reset_keys(void)
 342 {
 343     int i;
 344     for(i = 0; i < 256; i++) {
 345         if (modifiers_state[i]) {
 346             if (i & 0x80)
 347                 kbd_put_keycode(0xe0);
 348             kbd_put_keycode(i | 0x80);
 349             modifiers_state[i] = 0;
 350         }
 351     }
 352 }
 353
 354 static void sdl_process_key(SDL_KeyboardEvent *ev)
 355 {
 356     int keycode, v;
 357
 358     if (ev->keysym.sym == SDLK_PAUSE) {
 359         /* specific case */
 360         v = 0;
 361         if (ev->type == SDL_KEYUP)
 362             v |= 0x80;
 363         kbd_put_keycode(0xe1);
 364         kbd_put_keycode(0x1d | v);
 365         kbd_put_keycode(0x45 | v);
 366         return;
 367     }
 368
 369     if (kbd_layout) {
 370         keycode = sdl_keyevent_to_keycode_generic(ev);
 371     } else {
 372         keycode = sdl_keyevent_to_keycode(ev);
 373     }
 374
 375     switch(keycode) {
 376     case 0x00:
 377         /* sent when leaving window: reset the modifiers state */
 378         reset_keys();
 379         return;
 380     case 0x2a:                          /* Left Shift */
 381     case 0x36:                          /* Right Shift */
 382     case 0x1d:                          /* Left CTRL */
 383     case 0x9d:                          /* Right CTRL */
 384     case 0x38:                          /* Left ALT */
 385     case 0xb8:                         /* Right ALT */
 386         if (ev->type == SDL_KEYUP)
 387             modifiers_state[keycode] = 0;
 388         else
 389             modifiers_state[keycode] = 1;
 390         break;
 391     case 0x45: /* num lock */
 392     case 0x3a: /* caps lock */
 393         /* SDL does not send the key up event, so we generate it */
 394         kbd_put_keycode(keycode);
 395         kbd_put_keycode(keycode | 0x80);
 396         return;
 397     }
 398
 399     /* now send the key code */
 400     if (keycode & 0x80)
 401         kbd_put_keycode(0xe0);
 402     if (ev->type == SDL_KEYUP)
 403         kbd_put_keycode(keycode | 0x80);
 404     else
 405         kbd_put_keycode(keycode & 0x7f);
 406 }
 407
 408 static void sdl_update_caption(void)
 409 {
 410     char buf[1024];
 411     const char *status = "";
 412
 413     if (!vm_running)
 414         status = " [Stopped]";
 415     else if (gui_grab) {
 416         if (!alt_grab)
 417             status = " - Press Ctrl-Alt to exit grab";
 418         else
 419             status = " - Press Ctrl-Alt-Shift to exit grab";
 420     }
 421
 422     if (qemu_name)
 423         snprintf(buf, sizeof(buf), "QEMU (%s)%s", qemu_name, status);
 424     else
 425         snprintf(buf, sizeof(buf), "QEMU%s", status);
 426
 427     SDL_WM_SetCaption(buf, "QEMU");
 428 }
 429
 430 static void sdl_hide_cursor(void)
 431 {
 432     if (!cursor_hide)
 433         return;
 434
 435     if (kbd_mouse_is_absolute()) {
 436         SDL_ShowCursor(1);
 437         SDL_SetCursor(sdl_cursor_hidden);
 438     } else {
 439         SDL_ShowCursor(0);
 440     }
 441 }
 442
 443 static void sdl_show_cursor(void)
 444 {
 445     if (!cursor_hide)
 446         return;
 447
 448     if (!kbd_mouse_is_absolute()) {
 449         SDL_ShowCursor(1);
 450         if (guest_cursor &&
 451                 (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
 452             SDL_SetCursor(guest_sprite);
 453         else
 454             SDL_SetCursor(sdl_cursor_normal);
 455     }
 456 }
 457
 458 static void sdl_grab_start(void)
 459 {
 460     if (guest_cursor) {
 461         SDL_SetCursor(guest_sprite);
 462         if (!kbd_mouse_is_absolute() && !absolute_enabled)
 463             SDL_WarpMouse(guest_x, guest_y);
 464     } else
 465         sdl_hide_cursor();
 466
 467     if (SDL_WM_GrabInput(SDL_GRAB_ON) == SDL_GRAB_ON) {
 468         gui_grab = 1;
 469         sdl_update_caption();
 470     } else
 471         sdl_show_cursor();
 472 }
 473
 474 static void sdl_grab_end(void)
 475 {
 476     SDL_WM_GrabInput(SDL_GRAB_OFF);
 477     gui_grab = 0;
 478     sdl_show_cursor();
 479     sdl_update_caption();
 480 }
 481
 482 static void sdl_send_mouse_event(int dx, int dy, int dz, int x, int y, int state)
 483 {
 484     int buttons;
 485     buttons = 0;
 486     if (state & SDL_BUTTON(SDL_BUTTON_LEFT))
 487         buttons |= MOUSE_EVENT_LBUTTON;
 488     if (state & SDL_BUTTON(SDL_BUTTON_RIGHT))
 489         buttons |= MOUSE_EVENT_RBUTTON;
 490     if (state & SDL_BUTTON(SDL_BUTTON_MIDDLE))
 491         buttons |= MOUSE_EVENT_MBUTTON;
 492
 493     if (kbd_mouse_is_absolute()) {
 494         if (!absolute_enabled) {
 495             sdl_hide_cursor();
 496             if (gui_grab) {
 497                 sdl_grab_end();
 498             }
 499             absolute_enabled = 1;
 500         }
 501
 502        dx = x * 0x7FFF / (width - 1);
 503        dy = y * 0x7FFF / (height - 1);
 504     } else if (absolute_enabled) {
 505         sdl_show_cursor();
 506         absolute_enabled = 0;
 507     } else if (guest_cursor) {
 508         x -= guest_x;
 509         y -= guest_y;
 510         guest_x += x;
 511         guest_y += y;
 512         dx = x;
 513         dy = y;
 514     }
 515
 516     kbd_mouse_event(dx, dy, dz, buttons);
 517 }
 518
 519 static void toggle_full_screen(DisplayState *ds)
 520 {
 521     gui_fullscreen = !gui_fullscreen;
 522     if (gui_fullscreen) {
 523         scaling_active = 0;
 524         gui_saved_grab = gui_grab;
 525         sdl_grab_start();
 526     } else {
 527         if (!gui_saved_grab)
 528             sdl_grab_end();
 529     }
 530     vga_hw_invalidate();
 531     vga_hw_update();
 532 }
 533
 534 static void sdl_refresh(DisplayState *ds)
 535 {
 536     SDL_Event ev1, *ev = &ev1;
 537     int mod_state;
 538     int buttonstate = SDL_GetMouseState(NULL, NULL);
 539
 540     if (last_vm_running != vm_running) {
 541         last_vm_running = vm_running;
 542         sdl_update_caption();
 543     }
 544
 545     vga_hw_update();
 546     SDL_EnableUNICODE(!is_graphic_console());
 547
 548     while (SDL_PollEvent(ev)) {
 549         switch (ev->type) {
 550         case SDL_VIDEOEXPOSE:
 551             sdl_update(ds, 0, 0, real_screen->w, real_screen->h);
 552             break;
 553         case SDL_KEYDOWN:
 554         case SDL_KEYUP:
 555             if (ev->type == SDL_KEYDOWN) {
 556                 if (!alt_grab) {
 557                     mod_state = (SDL_GetModState() & gui_grab_code) ==
 558                                 gui_grab_code;
 559                 } else {
 560                     mod_state = (SDL_GetModState() & (gui_grab_code | KMOD_LSHIFT)) ==
 561                                 (gui_grab_code | KMOD_LSHIFT);
 562                 }
 563                 gui_key_modifier_pressed = mod_state;
 564                 if (gui_key_modifier_pressed) {
 565                     int keycode;
 566                     keycode = sdl_keyevent_to_keycode(&ev->key);
 567                     switch(keycode) {
 568                     case 0x21: /* 'f' key on US keyboard */
 569                         toggle_full_screen(ds);
 570                         gui_keysym = 1;
 571                         break;
 572                     case 0x02 ... 0x0a: /* '1' to '9' keys */
 573                         /* Reset the modifiers sent to the current console */
 574                         reset_keys();
 575                         console_select(keycode - 0x02);
 576                         if (!is_graphic_console()) {
 577                             /* display grab if going to a text console */
 578                             if (gui_grab)
 579                                 sdl_grab_end();
 580                         }
 581                         gui_keysym = 1;
 582                         break;
 583                     default:
 584                         break;
 585                     }
 586                 } else if (!is_graphic_console()) {
 587                     int keysym;
 588                     keysym = 0;
 589                     if (ev->key.keysym.mod & (KMOD_LCTRL | KMOD_RCTRL)) {
 590                         switch(ev->key.keysym.sym) {
 591                         case SDLK_UP: keysym = QEMU_KEY_CTRL_UP; break;
 592                         case SDLK_DOWN: keysym = QEMU_KEY_CTRL_DOWN; break;
 593                         case SDLK_LEFT: keysym = QEMU_KEY_CTRL_LEFT; break;
 594                         case SDLK_RIGHT: keysym = QEMU_KEY_CTRL_RIGHT; break;
 595                         case SDLK_HOME: keysym = QEMU_KEY_CTRL_HOME; break;
 596                         case SDLK_END: keysym = QEMU_KEY_CTRL_END; break;
 597                         case SDLK_PAGEUP: keysym = QEMU_KEY_CTRL_PAGEUP; break;
 598                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_CTRL_PAGEDOWN; break;
 599                         default: break;
 600                         }
 601                     } else {
 602                         switch(ev->key.keysym.sym) {
 603                         case SDLK_UP: keysym = QEMU_KEY_UP; break;
 604                         case SDLK_DOWN: keysym = QEMU_KEY_DOWN; break;
 605                         case SDLK_LEFT: keysym = QEMU_KEY_LEFT; break;
 606                         case SDLK_RIGHT: keysym = QEMU_KEY_RIGHT; break;
 607                         case SDLK_HOME: keysym = QEMU_KEY_HOME; break;
 608                         case SDLK_END: keysym = QEMU_KEY_END; break;
 609                         case SDLK_PAGEUP: keysym = QEMU_KEY_PAGEUP; break;
 610                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_PAGEDOWN; break;
 611                         case SDLK_BACKSPACE: keysym = QEMU_KEY_BACKSPACE; break;
 612                         case SDLK_DELETE: keysym = QEMU_KEY_DELETE; break;
 613                         default: break;
 614                         }
 615                     }
 616                     if (keysym) {
 617                         kbd_put_keysym(keysym);
 618                     } else if (ev->key.keysym.unicode != 0) {
 619                         kbd_put_keysym(ev->key.keysym.unicode);
 620                     }
 621                 }
 622             } else if (ev->type == SDL_KEYUP) {
 623                 if (!alt_grab) {
 624                     mod_state = (ev->key.keysym.mod & gui_grab_code);
 625                 } else {
 626                     mod_state = (ev->key.keysym.mod &
 627                                  (gui_grab_code | KMOD_LSHIFT));
 628                 }
 629                 if (!mod_state) {
 630                     if (gui_key_modifier_pressed) {
 631                         gui_key_modifier_pressed = 0;
 632                         if (gui_keysym == 0) {
 633                             /* exit/enter grab if pressing Ctrl-Alt */
 634                             if (!gui_grab) {
 635                                 /* if the application is not active,
 636                                    do not try to enter grab state. It
 637                                    prevents
 638                                    'SDL_WM_GrabInput(SDL_GRAB_ON)'
 639                                    from blocking all the application
 640                                    (SDL bug). */
 641                                 if (SDL_GetAppState() & SDL_APPACTIVE)
 642                                     sdl_grab_start();
 643                             } else {
 644                                 sdl_grab_end();
 645                             }
 646                             /* SDL does not send back all the
 647                                modifiers key, so we must correct it */
 648                             reset_keys();
 649                             break;
 650                         }
 651                         gui_keysym = 0;
 652                     }
 653                 }
 654             }
 655             if (is_graphic_console() && !gui_keysym)
 656                 sdl_process_key(&ev->key);
 657             break;
 658         case SDL_QUIT:
 659             if (!no_quit)
 660                 qemu_system_shutdown_request();
 661             break;
 662         case SDL_MOUSEMOTION:
 663             if (gui_grab || kbd_mouse_is_absolute() ||
 664                 absolute_enabled) {
 665                 sdl_send_mouse_event(ev->motion.xrel, ev->motion.yrel, 0,
 666                        ev->motion.x, ev->motion.y, ev->motion.state);
 667             }
 668             break;
 669         case SDL_MOUSEBUTTONDOWN:
 670         case SDL_MOUSEBUTTONUP:
 671             {
 672                 SDL_MouseButtonEvent *bev = &ev->button;
 673                 if (!gui_grab && !kbd_mouse_is_absolute()) {
 674                     if (ev->type == SDL_MOUSEBUTTONDOWN &&
 675                         (bev->button == SDL_BUTTON_LEFT)) {
 676                         /* start grabbing all events */
 677                         sdl_grab_start();
 678                     }
 679                 } else {
 680                     int dz;
 681                     dz = 0;
 682                     if (ev->type == SDL_MOUSEBUTTONDOWN) {
 683                         buttonstate |= SDL_BUTTON(bev->button);
 684                     } else {
 685                         buttonstate &= ~SDL_BUTTON(bev->button);
 686                     }
 687 #ifdef SDL_BUTTON_WHEELUP
 688                     if (bev->button == SDL_BUTTON_WHEELUP && ev->type == SDL_MOUSEBUTTONDOWN) {
 689                         dz = -1;
 690                     } else if (bev->button == SDL_BUTTON_WHEELDOWN && ev->type == SDL_MOUSEBUTTONDOWN) {
 691                         dz = 1;
 692                     }
 693 #endif
 694                     sdl_send_mouse_event(0, 0, dz, bev->x, bev->y, buttonstate);
 695                 }
 696             }
 697             break;
 698         case SDL_ACTIVEEVENT:
 699             if (gui_grab && ev->active.state == SDL_APPINPUTFOCUS &&
 700                 !ev->active.gain && !gui_fullscreen_initial_grab) {
 701                 sdl_grab_end();
 702             }
 703             if (ev->active.state & SDL_APPACTIVE) {
 704                 if (ev->active.gain) {
 705                     /* Back to default interval */
 706                     dcl->gui_timer_interval = 0;
 707                     dcl->idle = 0;
 708                 } else {
 709                     /* Sleeping interval */
 710                     dcl->gui_timer_interval = 500;
 711                     dcl->idle = 1;
 712                 }
 713             }
 714             break;
 715         case SDL_VIDEORESIZE:
 716         {
 717             SDL_ResizeEvent *rev = &ev->resize;
 718             int bpp = real_screen->format->BitsPerPixel;
 719             if (bpp != 16 && bpp != 32)
 720                 bpp = 32;
 721             do_sdl_resize(rev->w, rev->h, bpp);
 722             scaling_active = 1;
 723             vga_hw_invalidate();
 724             vga_hw_update();
 725             break;
 726         }
 727         default:
 728             break;
 729         }
 730     }
 731 }
 732
 733 static void sdl_fill(DisplayState *ds, int x, int y, int w, int h, uint32_t c)
 734 {
 735     SDL_Rect dst = { x, y, w, h };
 736     SDL_FillRect(real_screen, &dst, c);
 737 }
 738
 739 static void sdl_mouse_warp(int x, int y, int on)
 740 {
 741     if (on) {
 742         if (!guest_cursor)
 743             sdl_show_cursor();
 744         if (gui_grab || kbd_mouse_is_absolute() || absolute_enabled) {
 745             SDL_SetCursor(guest_sprite);
 746             if (!kbd_mouse_is_absolute() && !absolute_enabled)
 747                 SDL_WarpMouse(x, y);
 748         }
 749     } else if (gui_grab)
 750         sdl_hide_cursor();
 751     guest_cursor = on;
 752     guest_x = x, guest_y = y;
 753 }
 754
 755 static void sdl_mouse_define(int width, int height, int bpp,
 756                              int hot_x, int hot_y,
 757                              uint8_t *image, uint8_t *mask)
 758 {
 759     uint8_t sprite[256], *line;
 760     int x, y, dst, bypl, src = 0;
 761     if (guest_sprite)
 762         SDL_FreeCursor(guest_sprite);
 763
 764     memset(sprite, 0, 256);
 765     bypl = ((width * bpp + 31) >> 5) << 2;
 766     for (y = 0, dst = 0; y < height; y ++, image += bypl) {
 767         line = image;
 768         for (x = 0; x < width; x ++, dst ++) {
 769             switch (bpp) {
 770             case 24:
 771                 src = *(line ++); src |= *(line ++); src |= *(line ++);
 772                 break;
 773             case 16:
 774             case 15:
 775                 src = *(line ++); src |= *(line ++);
 776                 break;
 777             case 8:
 778                 src = *(line ++);
 779                 break;
 780             case 4:
 781                 src = 0xf & (line[x >> 1] >> ((x & 1)) << 2);
 782                 break;
 783             case 2:
 784                 src = 3 & (line[x >> 2] >> ((x & 3)) << 1);
 785                 break;
 786             case 1:
 787                 src = 1 & (line[x >> 3] >> (x & 7));
 788                 break;
 789             }
 790             if (!src)
 791                 sprite[dst >> 3] |= (1 << (~dst & 7)) & mask[dst >> 3];
 792         }
 793     }
 794     guest_sprite = SDL_CreateCursor(sprite, mask, width, height, hot_x, hot_y);
 795
 796     if (guest_cursor &&
 797             (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
 798         SDL_SetCursor(guest_sprite);
 799 }
 800
 801 static void sdl_cleanup(void)
 802 {
 803     if (guest_sprite)
 804         SDL_FreeCursor(guest_sprite);
 805     SDL_QuitSubSystem(SDL_INIT_VIDEO);
 806 }
 807
 808 void sdl_display_init(DisplayState *ds, int full_screen, int no_frame)
 809 {
 810     int flags;
 811     uint8_t data = 0;
 812     DisplayAllocator *da;
 813     const SDL_VideoInfo *vi;
 814
 815 #if defined(__APPLE__)
 816     /* always use generic keymaps */
 817     if (!keyboard_layout)
 818         keyboard_layout = "en-us";
 819 #endif
 820     if(keyboard_layout) {
 821         kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
 822         if (!kbd_layout)
 823             exit(1);
 824     }
 825
 826     if (no_frame)
 827         gui_noframe = 1;
 828
 829     flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
 830     if (SDL_Init (flags)) {
 831         fprintf(stderr, "Could not initialize SDL - exiting\n");
 832         exit(1);
 833     }
 834     vi = SDL_GetVideoInfo();
 835     host_format = *(vi->vfmt);
 836
 837     dcl = qemu_mallocz(sizeof(DisplayChangeListener));
 838     dcl->dpy_update = sdl_update;
 839     dcl->dpy_resize = sdl_resize;
 840     dcl->dpy_refresh = sdl_refresh;
 841     dcl->dpy_setdata = sdl_setdata;
 842     dcl->dpy_fill = sdl_fill;
 843     ds->mouse_set = sdl_mouse_warp;
 844     ds->cursor_define = sdl_mouse_define;
 845     register_displaychangelistener(ds, dcl);
 846
 847     da = qemu_mallocz(sizeof(DisplayAllocator));
 848     da->create_displaysurface = sdl_create_displaysurface;
 849     da->resize_displaysurface = sdl_resize_displaysurface;
 850     da->free_displaysurface = sdl_free_displaysurface;
 851     if (register_displayallocator(ds, da) == da) {
 852         DisplaySurface *surf;
 853         surf = sdl_create_displaysurface(ds_get_width(ds), ds_get_height(ds));
 854         defaultallocator_free_displaysurface(ds->surface);
 855         ds->surface = surf;
 856         dpy_resize(ds);
 857     }
 858
 859     sdl_update_caption();
 860     SDL_EnableKeyRepeat(250, 50);
 861     gui_grab = 0;
 862
 863     sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
 864     sdl_cursor_normal = SDL_GetCursor();
 865
 866     atexit(sdl_cleanup);
 867     if (full_screen) {
 868         gui_fullscreen = 1;
 869         gui_fullscreen_initial_grab = 1;
 870         sdl_grab_start();
 871     }
 872 }