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 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 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;
 272     int has_evdev = 0;
 273     const char *keycodes;
 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 == NULL || desc->names == NULL)
 283         return 0;
 284
 285     keycodes = XGetAtomName(info.info.x11.display, desc->names->keycodes);
 286     if (keycodes == NULL)
 287         fprintf(stderr, "could not lookup keycode name\n");
 288     else if (strstart(keycodes, "evdev", NULL))
 289         has_evdev = 1;
 290     else if (!strstart(keycodes, "xfree86", NULL))
 291         fprintf(stderr,
 292                 "unknown keycodes `%s', please report to qemu-devel@nongnu.org\n",
 293                 keycodes);
 294
 295     XkbFreeClientMap(desc, XkbGBN_AllComponentsMask, True);
 296
 297     return has_evdev;
 298 }
 299 #else
 300 static int check_for_evdev(void)
 301 {
 302         return 0;
 303 }
 304 #endif
 305
 306 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 307 {
 308     int keycode;
 309     static int has_evdev = -1;
 310
 311     if (has_evdev == -1)
 312         has_evdev = check_for_evdev();
 313
 314     keycode = ev->keysym.scancode;
 315
 316     if (keycode < 9) {
 317         keycode = 0;
 318     } else if (keycode < 97) {
 319         keycode -= 8; /* just an offset */
 320     } else if (keycode < 158) {
 321         /* use conversion table */
 322         if (has_evdev)
 323             keycode = translate_evdev_keycode(keycode - 97);
 324         else
 325             keycode = translate_xfree86_keycode(keycode - 97);
 326     } else if (keycode == 208) { /* Hiragana_Katakana */
 327         keycode = 0x70;
 328     } else if (keycode == 211) { /* backslash */
 329         keycode = 0x73;
 330     } else {
 331         keycode = 0;
 332     }
 333     return keycode;
 334 }
 335
 336 #endif
 337
 338 static void reset_keys(void)
 339 {
 340     int i;
 341     for(i = 0; i < 256; i++) {
 342         if (modifiers_state[i]) {
 343             if (i & 0x80)
 344                 kbd_put_keycode(0xe0);
 345             kbd_put_keycode(i | 0x80);
 346             modifiers_state[i] = 0;
 347         }
 348     }
 349 }
 350
 351 static void sdl_process_key(SDL_KeyboardEvent *ev)
 352 {
 353     int keycode, v;
 354
 355     if (ev->keysym.sym == SDLK_PAUSE) {
 356         /* specific case */
 357         v = 0;
 358         if (ev->type == SDL_KEYUP)
 359             v |= 0x80;
 360         kbd_put_keycode(0xe1);
 361         kbd_put_keycode(0x1d | v);
 362         kbd_put_keycode(0x45 | v);
 363         return;
 364     }
 365
 366     if (kbd_layout) {
 367         keycode = sdl_keyevent_to_keycode_generic(ev);
 368     } else {
 369         keycode = sdl_keyevent_to_keycode(ev);
 370     }
 371
 372     switch(keycode) {
 373     case 0x00:
 374         /* sent when leaving window: reset the modifiers state */
 375         reset_keys();
 376         return;
 377     case 0x2a:                          /* Left Shift */
 378     case 0x36:                          /* Right Shift */
 379     case 0x1d:                          /* Left CTRL */
 380     case 0x9d:                          /* Right CTRL */
 381     case 0x38:                          /* Left ALT */
 382     case 0xb8:                         /* Right ALT */
 383         if (ev->type == SDL_KEYUP)
 384             modifiers_state[keycode] = 0;
 385         else
 386             modifiers_state[keycode] = 1;
 387         break;
 388     case 0x45: /* num lock */
 389     case 0x3a: /* caps lock */
 390         /* SDL does not send the key up event, so we generate it */
 391         kbd_put_keycode(keycode);
 392         kbd_put_keycode(keycode | 0x80);
 393         return;
 394     }
 395
 396     /* now send the key code */
 397     if (keycode & 0x80)
 398         kbd_put_keycode(0xe0);
 399     if (ev->type == SDL_KEYUP)
 400         kbd_put_keycode(keycode | 0x80);
 401     else
 402         kbd_put_keycode(keycode & 0x7f);
 403 }
 404
 405 static void sdl_update_caption(void)
 406 {
 407     char buf[1024];
 408     const char *status = "";
 409
 410     if (!vm_running)
 411         status = " [Stopped]";
 412     else if (gui_grab) {
 413         if (!alt_grab)
 414             status = " - Press Ctrl-Alt to exit grab";
 415         else
 416             status = " - Press Ctrl-Alt-Shift to exit grab";
 417     }
 418
 419     if (qemu_name)
 420         snprintf(buf, sizeof(buf), "QEMU (%s)%s", qemu_name, status);
 421     else
 422         snprintf(buf, sizeof(buf), "QEMU%s", status);
 423
 424     SDL_WM_SetCaption(buf, "QEMU");
 425 }
 426
 427 static void sdl_hide_cursor(void)
 428 {
 429     if (!cursor_hide)
 430         return;
 431
 432     if (kbd_mouse_is_absolute()) {
 433         SDL_ShowCursor(1);
 434         SDL_SetCursor(sdl_cursor_hidden);
 435     } else {
 436         SDL_ShowCursor(0);
 437     }
 438 }
 439
 440 static void sdl_show_cursor(void)
 441 {
 442     if (!cursor_hide)
 443         return;
 444
 445     if (!kbd_mouse_is_absolute()) {
 446         SDL_ShowCursor(1);
 447         if (guest_cursor &&
 448                 (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
 449             SDL_SetCursor(guest_sprite);
 450         else
 451             SDL_SetCursor(sdl_cursor_normal);
 452     }
 453 }
 454
 455 static void sdl_grab_start(void)
 456 {
 457     if (guest_cursor) {
 458         SDL_SetCursor(guest_sprite);
 459         if (!kbd_mouse_is_absolute() && !absolute_enabled)
 460             SDL_WarpMouse(guest_x, guest_y);
 461     } else
 462         sdl_hide_cursor();
 463
 464     if (SDL_WM_GrabInput(SDL_GRAB_ON) == SDL_GRAB_ON) {
 465         gui_grab = 1;
 466         sdl_update_caption();
 467     } else
 468         sdl_show_cursor();
 469 }
 470
 471 static void sdl_grab_end(void)
 472 {
 473     SDL_WM_GrabInput(SDL_GRAB_OFF);
 474     gui_grab = 0;
 475     sdl_show_cursor();
 476     sdl_update_caption();
 477 }
 478
 479 static void sdl_send_mouse_event(int dx, int dy, int dz, int x, int y, int state)
 480 {
 481     int buttons;
 482     buttons = 0;
 483     if (state & SDL_BUTTON(SDL_BUTTON_LEFT))
 484         buttons |= MOUSE_EVENT_LBUTTON;
 485     if (state & SDL_BUTTON(SDL_BUTTON_RIGHT))
 486         buttons |= MOUSE_EVENT_RBUTTON;
 487     if (state & SDL_BUTTON(SDL_BUTTON_MIDDLE))
 488         buttons |= MOUSE_EVENT_MBUTTON;
 489
 490     if (kbd_mouse_is_absolute()) {
 491         if (!absolute_enabled) {
 492             sdl_hide_cursor();
 493             if (gui_grab) {
 494                 sdl_grab_end();
 495             }
 496             absolute_enabled = 1;
 497         }
 498
 499        dx = x * 0x7FFF / (width - 1);
 500        dy = y * 0x7FFF / (height - 1);
 501     } else if (absolute_enabled) {
 502         sdl_show_cursor();
 503         absolute_enabled = 0;
 504     } else if (guest_cursor) {
 505         x -= guest_x;
 506         y -= guest_y;
 507         guest_x += x;
 508         guest_y += y;
 509         dx = x;
 510         dy = y;
 511     }
 512
 513     kbd_mouse_event(dx, dy, dz, buttons);
 514 }
 515
 516 static void toggle_full_screen(DisplayState *ds)
 517 {
 518     gui_fullscreen = !gui_fullscreen;
 519     if (gui_fullscreen) {
 520         scaling_active = 0;
 521         gui_saved_grab = gui_grab;
 522         sdl_grab_start();
 523     } else {
 524         if (!gui_saved_grab)
 525             sdl_grab_end();
 526     }
 527     vga_hw_invalidate();
 528     vga_hw_update();
 529 }
 530
 531 static void sdl_refresh(DisplayState *ds)
 532 {
 533     SDL_Event ev1, *ev = &ev1;
 534     int mod_state;
 535     int buttonstate = SDL_GetMouseState(NULL, NULL);
 536
 537     if (last_vm_running != vm_running) {
 538         last_vm_running = vm_running;
 539         sdl_update_caption();
 540     }
 541
 542     vga_hw_update();
 543     SDL_EnableUNICODE(!is_graphic_console());
 544
 545     while (SDL_PollEvent(ev)) {
 546         switch (ev->type) {
 547         case SDL_VIDEOEXPOSE:
 548             sdl_update(ds, 0, 0, real_screen->w, real_screen->h);
 549             break;
 550         case SDL_KEYDOWN:
 551         case SDL_KEYUP:
 552             if (ev->type == SDL_KEYDOWN) {
 553                 if (!alt_grab) {
 554                     mod_state = (SDL_GetModState() & gui_grab_code) ==
 555                                 gui_grab_code;
 556                 } else {
 557                     mod_state = (SDL_GetModState() & (gui_grab_code | KMOD_LSHIFT)) ==
 558                                 (gui_grab_code | KMOD_LSHIFT);
 559                 }
 560                 gui_key_modifier_pressed = mod_state;
 561                 if (gui_key_modifier_pressed) {
 562                     int keycode;
 563                     keycode = sdl_keyevent_to_keycode(&ev->key);
 564                     switch(keycode) {
 565                     case 0x21: /* 'f' key on US keyboard */
 566                         toggle_full_screen(ds);
 567                         gui_keysym = 1;
 568                         break;
 569                     case 0x02 ... 0x0a: /* '1' to '9' keys */
 570                         /* Reset the modifiers sent to the current console */
 571                         reset_keys();
 572                         console_select(keycode - 0x02);
 573                         if (!is_graphic_console()) {
 574                             /* display grab if going to a text console */
 575                             if (gui_grab)
 576                                 sdl_grab_end();
 577                         }
 578                         gui_keysym = 1;
 579                         break;
 580                     default:
 581                         break;
 582                     }
 583                 } else if (!is_graphic_console()) {
 584                     int keysym;
 585                     keysym = 0;
 586                     if (ev->key.keysym.mod & (KMOD_LCTRL | KMOD_RCTRL)) {
 587                         switch(ev->key.keysym.sym) {
 588                         case SDLK_UP: keysym = QEMU_KEY_CTRL_UP; break;
 589                         case SDLK_DOWN: keysym = QEMU_KEY_CTRL_DOWN; break;
 590                         case SDLK_LEFT: keysym = QEMU_KEY_CTRL_LEFT; break;
 591                         case SDLK_RIGHT: keysym = QEMU_KEY_CTRL_RIGHT; break;
 592                         case SDLK_HOME: keysym = QEMU_KEY_CTRL_HOME; break;
 593                         case SDLK_END: keysym = QEMU_KEY_CTRL_END; break;
 594                         case SDLK_PAGEUP: keysym = QEMU_KEY_CTRL_PAGEUP; break;
 595                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_CTRL_PAGEDOWN; break;
 596                         default: break;
 597                         }
 598                     } else {
 599                         switch(ev->key.keysym.sym) {
 600                         case SDLK_UP: keysym = QEMU_KEY_UP; break;
 601                         case SDLK_DOWN: keysym = QEMU_KEY_DOWN; break;
 602                         case SDLK_LEFT: keysym = QEMU_KEY_LEFT; break;
 603                         case SDLK_RIGHT: keysym = QEMU_KEY_RIGHT; break;
 604                         case SDLK_HOME: keysym = QEMU_KEY_HOME; break;
 605                         case SDLK_END: keysym = QEMU_KEY_END; break;
 606                         case SDLK_PAGEUP: keysym = QEMU_KEY_PAGEUP; break;
 607                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_PAGEDOWN; break;
 608                         case SDLK_BACKSPACE: keysym = QEMU_KEY_BACKSPACE; break;
 609                         case SDLK_DELETE: keysym = QEMU_KEY_DELETE; break;
 610                         default: break;
 611                         }
 612                     }
 613                     if (keysym) {
 614                         kbd_put_keysym(keysym);
 615                     } else if (ev->key.keysym.unicode != 0) {
 616                         kbd_put_keysym(ev->key.keysym.unicode);
 617                     }
 618                 }
 619             } else if (ev->type == SDL_KEYUP) {
 620                 if (!alt_grab) {
 621                     mod_state = (ev->key.keysym.mod & gui_grab_code);
 622                 } else {
 623                     mod_state = (ev->key.keysym.mod &
 624                                  (gui_grab_code | KMOD_LSHIFT));
 625                 }
 626                 if (!mod_state) {
 627                     if (gui_key_modifier_pressed) {
 628                         gui_key_modifier_pressed = 0;
 629                         if (gui_keysym == 0) {
 630                             /* exit/enter grab if pressing Ctrl-Alt */
 631                             if (!gui_grab) {
 632                                 /* if the application is not active,
 633                                    do not try to enter grab state. It
 634                                    prevents
 635                                    'SDL_WM_GrabInput(SDL_GRAB_ON)'
 636                                    from blocking all the application
 637                                    (SDL bug). */
 638                                 if (SDL_GetAppState() & SDL_APPACTIVE)
 639                                     sdl_grab_start();
 640                             } else {
 641                                 sdl_grab_end();
 642                             }
 643                             /* SDL does not send back all the
 644                                modifiers key, so we must correct it */
 645                             reset_keys();
 646                             break;
 647                         }
 648                         gui_keysym = 0;
 649                     }
 650                 }
 651             }
 652             if (is_graphic_console() && !gui_keysym)
 653                 sdl_process_key(&ev->key);
 654             break;
 655         case SDL_QUIT:
 656             if (!no_quit)
 657                 qemu_system_shutdown_request();
 658             break;
 659         case SDL_MOUSEMOTION:
 660             if (gui_grab || kbd_mouse_is_absolute() ||
 661                 absolute_enabled) {
 662                 sdl_send_mouse_event(ev->motion.xrel, ev->motion.yrel, 0,
 663                        ev->motion.x, ev->motion.y, ev->motion.state);
 664             }
 665             break;
 666         case SDL_MOUSEBUTTONDOWN:
 667         case SDL_MOUSEBUTTONUP:
 668             {
 669                 SDL_MouseButtonEvent *bev = &ev->button;
 670                 if (!gui_grab && !kbd_mouse_is_absolute()) {
 671                     if (ev->type == SDL_MOUSEBUTTONDOWN &&
 672                         (bev->button == SDL_BUTTON_LEFT)) {
 673                         /* start grabbing all events */
 674                         sdl_grab_start();
 675                     }
 676                 } else {
 677                     int dz;
 678                     dz = 0;
 679                     if (ev->type == SDL_MOUSEBUTTONDOWN) {
 680                         buttonstate |= SDL_BUTTON(bev->button);
 681                     } else {
 682                         buttonstate &= ~SDL_BUTTON(bev->button);
 683                     }
 684 #ifdef SDL_BUTTON_WHEELUP
 685                     if (bev->button == SDL_BUTTON_WHEELUP && ev->type == SDL_MOUSEBUTTONDOWN) {
 686                         dz = -1;
 687                     } else if (bev->button == SDL_BUTTON_WHEELDOWN && ev->type == SDL_MOUSEBUTTONDOWN) {
 688                         dz = 1;
 689                     }
 690 #endif
 691                     sdl_send_mouse_event(0, 0, dz, bev->x, bev->y, buttonstate);
 692                 }
 693             }
 694             break;
 695         case SDL_ACTIVEEVENT:
 696             if (gui_grab && ev->active.state == SDL_APPINPUTFOCUS &&
 697                 !ev->active.gain && !gui_fullscreen_initial_grab) {
 698                 sdl_grab_end();
 699             }
 700             if (ev->active.state & SDL_APPACTIVE) {
 701                 if (ev->active.gain) {
 702                     /* Back to default interval */
 703                     dcl->gui_timer_interval = 0;
 704                     dcl->idle = 0;
 705                 } else {
 706                     /* Sleeping interval */
 707                     dcl->gui_timer_interval = 500;
 708                     dcl->idle = 1;
 709                 }
 710             }
 711             break;
 712         case SDL_VIDEORESIZE:
 713         {
 714             SDL_ResizeEvent *rev = &ev->resize;
 715             int bpp = real_screen->format->BitsPerPixel;
 716             if (bpp != 16 && bpp != 32)
 717                 bpp = 32;
 718             do_sdl_resize(rev->w, rev->h, bpp);
 719             scaling_active = 1;
 720             vga_hw_invalidate();
 721             vga_hw_update();
 722             break;
 723         }
 724         default:
 725             break;
 726         }
 727     }
 728 }
 729
 730 static void sdl_fill(DisplayState *ds, int x, int y, int w, int h, uint32_t c)
 731 {
 732     SDL_Rect dst = { x, y, w, h };
 733     SDL_FillRect(real_screen, &dst, c);
 734 }
 735
 736 static void sdl_mouse_warp(int x, int y, int on)
 737 {
 738     if (on) {
 739         if (!guest_cursor)
 740             sdl_show_cursor();
 741         if (gui_grab || kbd_mouse_is_absolute() || absolute_enabled) {
 742             SDL_SetCursor(guest_sprite);
 743             if (!kbd_mouse_is_absolute() && !absolute_enabled)
 744                 SDL_WarpMouse(x, y);
 745         }
 746     } else if (gui_grab)
 747         sdl_hide_cursor();
 748     guest_cursor = on;
 749     guest_x = x, guest_y = y;
 750 }
 751
 752 static void sdl_mouse_define(int width, int height, int bpp,
 753                              int hot_x, int hot_y,
 754                              uint8_t *image, uint8_t *mask)
 755 {
 756     uint8_t sprite[256], *line;
 757     int x, y, dst, bypl, src = 0;
 758     if (guest_sprite)
 759         SDL_FreeCursor(guest_sprite);
 760
 761     memset(sprite, 0, 256);
 762     bypl = ((width * bpp + 31) >> 5) << 2;
 763     for (y = 0, dst = 0; y < height; y ++, image += bypl) {
 764         line = image;
 765         for (x = 0; x < width; x ++, dst ++) {
 766             switch (bpp) {
 767             case 24:
 768                 src = *(line ++); src |= *(line ++); src |= *(line ++);
 769                 break;
 770             case 16:
 771             case 15:
 772                 src = *(line ++); src |= *(line ++);
 773                 break;
 774             case 8:
 775                 src = *(line ++);
 776                 break;
 777             case 4:
 778                 src = 0xf & (line[x >> 1] >> ((x & 1)) << 2);
 779                 break;
 780             case 2:
 781                 src = 3 & (line[x >> 2] >> ((x & 3)) << 1);
 782                 break;
 783             case 1:
 784                 src = 1 & (line[x >> 3] >> (x & 7));
 785                 break;
 786             }
 787             if (!src)
 788                 sprite[dst >> 3] |= (1 << (~dst & 7)) & mask[dst >> 3];
 789         }
 790     }
 791     guest_sprite = SDL_CreateCursor(sprite, mask, width, height, hot_x, hot_y);
 792
 793     if (guest_cursor &&
 794             (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
 795         SDL_SetCursor(guest_sprite);
 796 }
 797
 798 static void sdl_cleanup(void)
 799 {
 800     if (guest_sprite)
 801         SDL_FreeCursor(guest_sprite);
 802     SDL_QuitSubSystem(SDL_INIT_VIDEO);
 803 }
 804
 805 void sdl_display_init(DisplayState *ds, int full_screen, int no_frame)
 806 {
 807     int flags;
 808     uint8_t data = 0;
 809     DisplayAllocator *da;
 810     const SDL_VideoInfo *vi;
 811
 812 #if defined(__APPLE__)
 813     /* always use generic keymaps */
 814     if (!keyboard_layout)
 815         keyboard_layout = "en-us";
 816 #endif
 817     if(keyboard_layout) {
 818         kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
 819         if (!kbd_layout)
 820             exit(1);
 821     }
 822
 823     if (no_frame)
 824         gui_noframe = 1;
 825
 826     flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
 827     if (SDL_Init (flags)) {
 828         fprintf(stderr, "Could not initialize SDL - exiting\n");
 829         exit(1);
 830     }
 831     vi = SDL_GetVideoInfo();
 832     host_format = *(vi->vfmt);
 833
 834     dcl = qemu_mallocz(sizeof(DisplayChangeListener));
 835     dcl->dpy_update = sdl_update;
 836     dcl->dpy_resize = sdl_resize;
 837     dcl->dpy_refresh = sdl_refresh;
 838     dcl->dpy_setdata = sdl_setdata;
 839     dcl->dpy_fill = sdl_fill;
 840     ds->mouse_set = sdl_mouse_warp;
 841     ds->cursor_define = sdl_mouse_define;
 842     register_displaychangelistener(ds, dcl);
 843
 844     da = qemu_mallocz(sizeof(DisplayAllocator));
 845     da->create_displaysurface = sdl_create_displaysurface;
 846     da->resize_displaysurface = sdl_resize_displaysurface;
 847     da->free_displaysurface = sdl_free_displaysurface;
 848     if (register_displayallocator(ds, da) == da) {
 849         DisplaySurface *surf;
 850         surf = sdl_create_displaysurface(ds_get_width(ds), ds_get_height(ds));
 851         defaultallocator_free_displaysurface(ds->surface);
 852         ds->surface = surf;
 853         dpy_resize(ds);
 854     }
 855
 856     sdl_update_caption();
 857     SDL_EnableKeyRepeat(250, 50);
 858     gui_grab = 0;
 859
 860     sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
 861     sdl_cursor_normal = SDL_GetCursor();
 862
 863     atexit(sdl_cleanup);
 864     if (full_screen) {
 865         gui_fullscreen = 1;
 866         gui_fullscreen_initial_grab = 1;
 867         sdl_grab_start();
 868     }
 869 }