ui/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
  25 /* Avoid compiler warning because macro is redefined in SDL_syswm.h. */
  26 #undef WIN32_LEAN_AND_MEAN
  27
  28 #include <SDL.h>
  29 #include <SDL_syswm.h>
  30
  31 #ifndef _WIN32
  32 #include <signal.h>
  33 #endif
  34
  35 #include "qemu-common.h"
  36 #include "console.h"
  37 #include "sysemu.h"
  38 #include "x_keymap.h"
  39 #include "sdl_zoom.h"
  40
  41 static DisplayChangeListener *dcl;
  42 static SDL_Surface *real_screen;
  43 static SDL_Surface *guest_screen = NULL;
  44 static int gui_grab; /* if true, all keyboard/mouse events are grabbed */
  45 static int last_vm_running;
  46 static int gui_saved_grab;
  47 static int gui_fullscreen;
  48 static int gui_noframe;
  49 static int gui_key_modifier_pressed;
  50 static int gui_keysym;
  51 static int gui_fullscreen_initial_grab;
  52 static int gui_grab_code = KMOD_LALT | KMOD_LCTRL;
  53 static uint8_t modifiers_state[256];
  54 static int width, height;
  55 static SDL_Cursor *sdl_cursor_normal;
  56 static SDL_Cursor *sdl_cursor_hidden;
  57 static int absolute_enabled = 0;
  58 static int guest_cursor = 0;
  59 static int guest_x, guest_y;
  60 static SDL_Cursor *guest_sprite = NULL;
  61 static uint8_t allocator;
  62 static SDL_PixelFormat host_format;
  63 static int scaling_active = 0;
  64 static Notifier mouse_mode_notifier;
  65
  66 static void sdl_update(DisplayState *ds, int x, int y, int w, int h)
  67 {
  68     //    printf("updating x=%d y=%d w=%d h=%d\n", x, y, w, h);
  69     SDL_Rect rec;
  70     rec.x = x;
  71     rec.y = y;
  72     rec.w = w;
  73     rec.h = h;
  74
  75     if (guest_screen) {
  76         if (!scaling_active) {
  77             SDL_BlitSurface(guest_screen, &rec, real_screen, &rec);
  78         } else {
  79             if (sdl_zoom_blit(guest_screen, real_screen, SMOOTHING_ON, &rec) < 0) {
  80                 fprintf(stderr, "Zoom blit failed\n");
  81                 exit(1);
  82             }
  83         }
  84     }
  85     SDL_UpdateRect(real_screen, rec.x, rec.y, rec.w, rec.h);
  86 }
  87
  88 static void sdl_setdata(DisplayState *ds)
  89 {
  90     if (guest_screen != NULL) SDL_FreeSurface(guest_screen);
  91
  92     guest_screen = SDL_CreateRGBSurfaceFrom(ds_get_data(ds), ds_get_width(ds), ds_get_height(ds),
  93                                             ds_get_bits_per_pixel(ds), ds_get_linesize(ds),
  94                                             ds->surface->pf.rmask, ds->surface->pf.gmask,
  95                                             ds->surface->pf.bmask, ds->surface->pf.amask);
  96 }
  97
  98 static void do_sdl_resize(int new_width, int new_height, int bpp)
  99 {
 100     int flags;
 101
 102     //    printf("resizing to %d %d\n", w, h);
 103
 104     flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL|SDL_RESIZABLE;
 105     if (gui_fullscreen)
 106         flags |= SDL_FULLSCREEN;
 107     if (gui_noframe)
 108         flags |= SDL_NOFRAME;
 109
 110     width = new_width;
 111     height = new_height;
 112     real_screen = SDL_SetVideoMode(width, height, bpp, flags);
 113     if (!real_screen) {
 114         fprintf(stderr, "Could not open SDL display (%dx%dx%d): %s\n", width,
 115                 height, bpp, SDL_GetError());
 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) & SCANCODE_KEYMASK;
 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 & SCANCODE_GREY)
 347                 kbd_put_keycode(SCANCODE_EMUL0);
 348             kbd_put_keycode(i | SCANCODE_UP);
 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 |= SCANCODE_UP;
 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 #define QEMU_SDL_VERSION ((SDL_MAJOR_VERSION << 8) + SDL_MINOR_VERSION)
 392 #if QEMU_SDL_VERSION < 0x102 || QEMU_SDL_VERSION == 0x102 && SDL_PATCHLEVEL < 14
 393         /* SDL versions before 1.2.14 don't support key up for caps/num lock. */
 394     case 0x45: /* num lock */
 395     case 0x3a: /* caps lock */
 396         /* SDL does not send the key up event, so we generate it */
 397         kbd_put_keycode(keycode);
 398         kbd_put_keycode(keycode | SCANCODE_UP);
 399         return;
 400 #endif
 401     }
 402
 403     /* now send the key code */
 404     if (keycode & SCANCODE_GREY)
 405         kbd_put_keycode(SCANCODE_EMUL0);
 406     if (ev->type == SDL_KEYUP)
 407         kbd_put_keycode(keycode | SCANCODE_UP);
 408     else
 409         kbd_put_keycode(keycode & SCANCODE_KEYCODEMASK);
 410 }
 411
 412 static void sdl_update_caption(void)
 413 {
 414     char win_title[1024];
 415     char icon_title[1024];
 416     const char *status = "";
 417
 418     if (!vm_running)
 419         status = " [Stopped]";
 420     else if (gui_grab) {
 421         if (alt_grab)
 422             status = " - Press Ctrl-Alt-Shift to exit mouse grab";
 423         else if (ctrl_grab)
 424             status = " - Press Right-Ctrl to exit mouse grab";
 425         else
 426             status = " - Press Ctrl-Alt to exit mouse grab";
 427     }
 428
 429     if (qemu_name) {
 430         snprintf(win_title, sizeof(win_title), "QEMU (%s)%s", qemu_name, status);
 431         snprintf(icon_title, sizeof(icon_title), "QEMU (%s)", qemu_name);
 432     } else {
 433         snprintf(win_title, sizeof(win_title), "QEMU%s", status);
 434         snprintf(icon_title, sizeof(icon_title), "QEMU");
 435     }
 436
 437     SDL_WM_SetCaption(win_title, icon_title);
 438 }
 439
 440 static void sdl_hide_cursor(void)
 441 {
 442     if (!cursor_hide)
 443         return;
 444
 445     if (kbd_mouse_is_absolute()) {
 446         SDL_ShowCursor(1);
 447         SDL_SetCursor(sdl_cursor_hidden);
 448     } else {
 449         SDL_ShowCursor(0);
 450     }
 451 }
 452
 453 static void sdl_show_cursor(void)
 454 {
 455     if (!cursor_hide)
 456         return;
 457
 458     if (!kbd_mouse_is_absolute()) {
 459         SDL_ShowCursor(1);
 460         if (guest_cursor &&
 461                 (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
 462             SDL_SetCursor(guest_sprite);
 463         else
 464             SDL_SetCursor(sdl_cursor_normal);
 465     }
 466 }
 467
 468 static void sdl_grab_start(void)
 469 {
 470     if (guest_cursor) {
 471         SDL_SetCursor(guest_sprite);
 472         if (!kbd_mouse_is_absolute() && !absolute_enabled)
 473             SDL_WarpMouse(guest_x, guest_y);
 474     } else
 475         sdl_hide_cursor();
 476
 477     if (SDL_WM_GrabInput(SDL_GRAB_ON) == SDL_GRAB_ON) {
 478         gui_grab = 1;
 479         sdl_update_caption();
 480     } else
 481         sdl_show_cursor();
 482 }
 483
 484 static void sdl_grab_end(void)
 485 {
 486     SDL_WM_GrabInput(SDL_GRAB_OFF);
 487     gui_grab = 0;
 488     sdl_show_cursor();
 489     sdl_update_caption();
 490 }
 491
 492 static void sdl_mouse_mode_change(Notifier *notify)
 493 {
 494     if (kbd_mouse_is_absolute()) {
 495         if (!absolute_enabled) {
 496             sdl_hide_cursor();
 497             if (gui_grab) {
 498                 sdl_grab_end();
 499             }
 500             absolute_enabled = 1;
 501         }
 502     } else if (absolute_enabled) {
 503         sdl_show_cursor();
 504         absolute_enabled = 0;
 505     }
 506 }
 507
 508 static void sdl_send_mouse_event(int dx, int dy, int dz, int x, int y, int state)
 509 {
 510     int buttons;
 511     buttons = 0;
 512     if (state & SDL_BUTTON(SDL_BUTTON_LEFT))
 513         buttons |= MOUSE_EVENT_LBUTTON;
 514     if (state & SDL_BUTTON(SDL_BUTTON_RIGHT))
 515         buttons |= MOUSE_EVENT_RBUTTON;
 516     if (state & SDL_BUTTON(SDL_BUTTON_MIDDLE))
 517         buttons |= MOUSE_EVENT_MBUTTON;
 518
 519     if (kbd_mouse_is_absolute()) {
 520        dx = x * 0x7FFF / (width - 1);
 521        dy = y * 0x7FFF / (height - 1);
 522     } else if (guest_cursor) {
 523         x -= guest_x;
 524         y -= guest_y;
 525         guest_x += x;
 526         guest_y += y;
 527         dx = x;
 528         dy = y;
 529     }
 530
 531     kbd_mouse_event(dx, dy, dz, buttons);
 532 }
 533
 534 static void toggle_full_screen(DisplayState *ds)
 535 {
 536     gui_fullscreen = !gui_fullscreen;
 537     do_sdl_resize(real_screen->w, real_screen->h, real_screen->format->BitsPerPixel);
 538     if (gui_fullscreen) {
 539         scaling_active = 0;
 540         gui_saved_grab = gui_grab;
 541         sdl_grab_start();
 542     } else {
 543         if (!gui_saved_grab)
 544             sdl_grab_end();
 545     }
 546     vga_hw_invalidate();
 547     vga_hw_update();
 548 }
 549
 550 static void sdl_refresh(DisplayState *ds)
 551 {
 552     SDL_Event ev1, *ev = &ev1;
 553     int mod_state;
 554     int buttonstate = SDL_GetMouseState(NULL, NULL);
 555
 556     if (last_vm_running != vm_running) {
 557         last_vm_running = vm_running;
 558         sdl_update_caption();
 559     }
 560
 561     vga_hw_update();
 562     SDL_EnableUNICODE(!is_graphic_console());
 563
 564     while (SDL_PollEvent(ev)) {
 565         switch (ev->type) {
 566         case SDL_VIDEOEXPOSE:
 567             sdl_update(ds, 0, 0, real_screen->w, real_screen->h);
 568             break;
 569         case SDL_KEYDOWN:
 570         case SDL_KEYUP:
 571             if (ev->type == SDL_KEYDOWN) {
 572                 if (alt_grab) {
 573                     mod_state = (SDL_GetModState() & (gui_grab_code | KMOD_LSHIFT)) ==
 574                                 (gui_grab_code | KMOD_LSHIFT);
 575                 } else if (ctrl_grab) {
 576                     mod_state = (SDL_GetModState() & KMOD_RCTRL) == KMOD_RCTRL;
 577                 } else {
 578                     mod_state = (SDL_GetModState() & gui_grab_code) ==
 579                                 gui_grab_code;
 580                 }
 581                 gui_key_modifier_pressed = mod_state;
 582                 if (gui_key_modifier_pressed) {
 583                     int keycode;
 584                     keycode = sdl_keyevent_to_keycode(&ev->key);
 585                     switch(keycode) {
 586                     case 0x21: /* 'f' key on US keyboard */
 587                         toggle_full_screen(ds);
 588                         gui_keysym = 1;
 589                         break;
 590                     case 0x16: /* 'u' key on US keyboard */
 591                         scaling_active = 0;
 592                         sdl_resize(ds);
 593                         vga_hw_invalidate();
 594                         vga_hw_update();
 595                         break;
 596                     case 0x02 ... 0x0a: /* '1' to '9' keys */
 597                         /* Reset the modifiers sent to the current console */
 598                         reset_keys();
 599                         console_select(keycode - 0x02);
 600                         if (!is_graphic_console()) {
 601                             /* display grab if going to a text console */
 602                             if (gui_grab)
 603                                 sdl_grab_end();
 604                         }
 605                         gui_keysym = 1;
 606                         break;
 607                     default:
 608                         break;
 609                     }
 610                 } else if (!is_graphic_console()) {
 611                     int keysym;
 612                     keysym = 0;
 613                     if (ev->key.keysym.mod & (KMOD_LCTRL | KMOD_RCTRL)) {
 614                         switch(ev->key.keysym.sym) {
 615                         case SDLK_UP: keysym = QEMU_KEY_CTRL_UP; break;
 616                         case SDLK_DOWN: keysym = QEMU_KEY_CTRL_DOWN; break;
 617                         case SDLK_LEFT: keysym = QEMU_KEY_CTRL_LEFT; break;
 618                         case SDLK_RIGHT: keysym = QEMU_KEY_CTRL_RIGHT; break;
 619                         case SDLK_HOME: keysym = QEMU_KEY_CTRL_HOME; break;
 620                         case SDLK_END: keysym = QEMU_KEY_CTRL_END; break;
 621                         case SDLK_PAGEUP: keysym = QEMU_KEY_CTRL_PAGEUP; break;
 622                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_CTRL_PAGEDOWN; break;
 623                         default: break;
 624                         }
 625                     } else {
 626                         switch(ev->key.keysym.sym) {
 627                         case SDLK_UP: keysym = QEMU_KEY_UP; break;
 628                         case SDLK_DOWN: keysym = QEMU_KEY_DOWN; break;
 629                         case SDLK_LEFT: keysym = QEMU_KEY_LEFT; break;
 630                         case SDLK_RIGHT: keysym = QEMU_KEY_RIGHT; break;
 631                         case SDLK_HOME: keysym = QEMU_KEY_HOME; break;
 632                         case SDLK_END: keysym = QEMU_KEY_END; break;
 633                         case SDLK_PAGEUP: keysym = QEMU_KEY_PAGEUP; break;
 634                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_PAGEDOWN; break;
 635                         case SDLK_BACKSPACE: keysym = QEMU_KEY_BACKSPACE; break;
 636                         case SDLK_DELETE: keysym = QEMU_KEY_DELETE; break;
 637                         default: break;
 638                         }
 639                     }
 640                     if (keysym) {
 641                         kbd_put_keysym(keysym);
 642                     } else if (ev->key.keysym.unicode != 0) {
 643                         kbd_put_keysym(ev->key.keysym.unicode);
 644                     }
 645                 }
 646             } else if (ev->type == SDL_KEYUP) {
 647                 if (!alt_grab) {
 648                     mod_state = (ev->key.keysym.mod & gui_grab_code);
 649                 } else {
 650                     mod_state = (ev->key.keysym.mod &
 651                                  (gui_grab_code | KMOD_LSHIFT));
 652                 }
 653                 if (!mod_state) {
 654                     if (gui_key_modifier_pressed) {
 655                         gui_key_modifier_pressed = 0;
 656                         if (gui_keysym == 0) {
 657                             /* exit/enter grab if pressing Ctrl-Alt */
 658                             if (!gui_grab) {
 659                                 /* if the application is not active,
 660                                    do not try to enter grab state. It
 661                                    prevents
 662                                    'SDL_WM_GrabInput(SDL_GRAB_ON)'
 663                                    from blocking all the application
 664                                    (SDL bug). */
 665                                 if (SDL_GetAppState() & SDL_APPACTIVE)
 666                                     sdl_grab_start();
 667                             } else {
 668                                 sdl_grab_end();
 669                             }
 670                             /* SDL does not send back all the
 671                                modifiers key, so we must correct it */
 672                             reset_keys();
 673                             break;
 674                         }
 675                         gui_keysym = 0;
 676                     }
 677                 }
 678             }
 679             if (is_graphic_console() && !gui_keysym)
 680                 sdl_process_key(&ev->key);
 681             break;
 682         case SDL_QUIT:
 683             if (!no_quit)
 684                 qemu_system_shutdown_request();
 685             break;
 686         case SDL_MOUSEMOTION:
 687             if (gui_grab || kbd_mouse_is_absolute() ||
 688                 absolute_enabled) {
 689                 sdl_send_mouse_event(ev->motion.xrel, ev->motion.yrel, 0,
 690                        ev->motion.x, ev->motion.y, ev->motion.state);
 691             }
 692             break;
 693         case SDL_MOUSEBUTTONDOWN:
 694         case SDL_MOUSEBUTTONUP:
 695             {
 696                 SDL_MouseButtonEvent *bev = &ev->button;
 697                 if (!gui_grab && !kbd_mouse_is_absolute()) {
 698                     if (ev->type == SDL_MOUSEBUTTONDOWN &&
 699                         (bev->button == SDL_BUTTON_LEFT)) {
 700                         /* start grabbing all events */
 701                         sdl_grab_start();
 702                     }
 703                 } else {
 704                     int dz;
 705                     dz = 0;
 706                     if (ev->type == SDL_MOUSEBUTTONDOWN) {
 707                         buttonstate |= SDL_BUTTON(bev->button);
 708                     } else {
 709                         buttonstate &= ~SDL_BUTTON(bev->button);
 710                     }
 711 #ifdef SDL_BUTTON_WHEELUP
 712                     if (bev->button == SDL_BUTTON_WHEELUP && ev->type == SDL_MOUSEBUTTONDOWN) {
 713                         dz = -1;
 714                     } else if (bev->button == SDL_BUTTON_WHEELDOWN && ev->type == SDL_MOUSEBUTTONDOWN) {
 715                         dz = 1;
 716                     }
 717 #endif
 718                     sdl_send_mouse_event(0, 0, dz, bev->x, bev->y, buttonstate);
 719                 }
 720             }
 721             break;
 722         case SDL_ACTIVEEVENT:
 723             if (gui_grab && ev->active.state == SDL_APPINPUTFOCUS &&
 724                 !ev->active.gain && !gui_fullscreen_initial_grab) {
 725                 sdl_grab_end();
 726             }
 727             if (ev->active.state & SDL_APPACTIVE) {
 728                 if (ev->active.gain) {
 729                     /* Back to default interval */
 730                     dcl->gui_timer_interval = 0;
 731                     dcl->idle = 0;
 732                 } else {
 733                     /* Sleeping interval */
 734                     dcl->gui_timer_interval = 500;
 735                     dcl->idle = 1;
 736                 }
 737             }
 738             break;
 739         case SDL_VIDEORESIZE:
 740         {
 741             SDL_ResizeEvent *rev = &ev->resize;
 742             int bpp = real_screen->format->BitsPerPixel;
 743             if (bpp != 16 && bpp != 32)
 744                 bpp = 32;
 745             do_sdl_resize(rev->w, rev->h, bpp);
 746             scaling_active = 1;
 747             if (!is_buffer_shared(ds->surface)) {
 748                 ds->surface = qemu_resize_displaysurface(ds, ds_get_width(ds), ds_get_height(ds));
 749                 dpy_resize(ds);
 750             }
 751             vga_hw_invalidate();
 752             vga_hw_update();
 753             break;
 754         }
 755         default:
 756             break;
 757         }
 758     }
 759 }
 760
 761 static void sdl_fill(DisplayState *ds, int x, int y, int w, int h, uint32_t c)
 762 {
 763     SDL_Rect dst = { x, y, w, h };
 764     SDL_FillRect(real_screen, &dst, c);
 765 }
 766
 767 static void sdl_mouse_warp(int x, int y, int on)
 768 {
 769     if (on) {
 770         if (!guest_cursor)
 771             sdl_show_cursor();
 772         if (gui_grab || kbd_mouse_is_absolute() || absolute_enabled) {
 773             SDL_SetCursor(guest_sprite);
 774             if (!kbd_mouse_is_absolute() && !absolute_enabled)
 775                 SDL_WarpMouse(x, y);
 776         }
 777     } else if (gui_grab)
 778         sdl_hide_cursor();
 779     guest_cursor = on;
 780     guest_x = x, guest_y = y;
 781 }
 782
 783 static void sdl_mouse_define(QEMUCursor *c)
 784 {
 785     uint8_t *image, *mask;
 786     int bpl;
 787
 788     if (guest_sprite)
 789         SDL_FreeCursor(guest_sprite);
 790
 791     bpl = cursor_get_mono_bpl(c);
 792     image = qemu_mallocz(bpl * c->height);
 793     mask  = qemu_mallocz(bpl * c->height);
 794     cursor_get_mono_image(c, 0x000000, image);
 795     cursor_get_mono_mask(c, 0, mask);
 796     guest_sprite = SDL_CreateCursor(image, mask, c->width, c->height,
 797                                     c->hot_x, c->hot_y);
 798     qemu_free(image);
 799     qemu_free(mask);
 800
 801     if (guest_cursor &&
 802             (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
 803         SDL_SetCursor(guest_sprite);
 804 }
 805
 806 static void sdl_cleanup(void)
 807 {
 808     if (guest_sprite)
 809         SDL_FreeCursor(guest_sprite);
 810     SDL_QuitSubSystem(SDL_INIT_VIDEO);
 811 }
 812
 813 void sdl_display_init(DisplayState *ds, int full_screen, int no_frame)
 814 {
 815     int flags;
 816     uint8_t data = 0;
 817     DisplayAllocator *da;
 818     const SDL_VideoInfo *vi;
 819
 820 #if defined(__APPLE__)
 821     /* always use generic keymaps */
 822     if (!keyboard_layout)
 823         keyboard_layout = "en-us";
 824 #endif
 825     if(keyboard_layout) {
 826         kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
 827         if (!kbd_layout)
 828             exit(1);
 829     }
 830
 831     if (no_frame)
 832         gui_noframe = 1;
 833
 834     if (!full_screen) {
 835         setenv("SDL_VIDEO_ALLOW_SCREENSAVER", "1", 0);
 836     }
 837
 838     /* Enable normal up/down events for Caps-Lock and Num-Lock keys.
 839      * This requires SDL >= 1.2.14. */
 840     setenv("SDL_DISABLE_LOCK_KEYS", "1", 1);
 841
 842     flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
 843     if (SDL_Init (flags)) {
 844         fprintf(stderr, "Could not initialize SDL(%s) - exiting\n",
 845                 SDL_GetError());
 846         exit(1);
 847     }
 848     vi = SDL_GetVideoInfo();
 849     host_format = *(vi->vfmt);
 850
 851     dcl = qemu_mallocz(sizeof(DisplayChangeListener));
 852     dcl->dpy_update = sdl_update;
 853     dcl->dpy_resize = sdl_resize;
 854     dcl->dpy_refresh = sdl_refresh;
 855     dcl->dpy_setdata = sdl_setdata;
 856     dcl->dpy_fill = sdl_fill;
 857     ds->mouse_set = sdl_mouse_warp;
 858     ds->cursor_define = sdl_mouse_define;
 859     register_displaychangelistener(ds, dcl);
 860
 861     da = qemu_mallocz(sizeof(DisplayAllocator));
 862     da->create_displaysurface = sdl_create_displaysurface;
 863     da->resize_displaysurface = sdl_resize_displaysurface;
 864     da->free_displaysurface = sdl_free_displaysurface;
 865     if (register_displayallocator(ds, da) == da) {
 866         dpy_resize(ds);
 867     }
 868
 869     mouse_mode_notifier.notify = sdl_mouse_mode_change;
 870     qemu_add_mouse_mode_change_notifier(&mouse_mode_notifier);
 871
 872     sdl_update_caption();
 873     SDL_EnableKeyRepeat(250, 50);
 874     gui_grab = 0;
 875
 876     sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
 877     sdl_cursor_normal = SDL_GetCursor();
 878
 879     atexit(sdl_cleanup);
 880     if (full_screen) {
 881         gui_fullscreen = 1;
 882         gui_fullscreen_initial_grab = 1;
 883         sdl_grab_start();
 884     }
 885 }