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 = NULL;
  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 (%dx%dx%d): %s\n", width,
 116                 height, bpp, SDL_GetError());
 117         exit(1);
 118     }
 119 }
 120
 121 static void sdl_resize(DisplayState *ds)
 122 {
 123     if  (!allocator) {
 124         if (!scaling_active)
 125             do_sdl_resize(ds_get_width(ds), ds_get_height(ds), 0);
 126         else if (real_screen->format->BitsPerPixel != ds_get_bits_per_pixel(ds))
 127             do_sdl_resize(real_screen->w, real_screen->h, ds_get_bits_per_pixel(ds));
 128         sdl_setdata(ds);
 129     } else {
 130         if (guest_screen != NULL) {
 131             SDL_FreeSurface(guest_screen);
 132             guest_screen = NULL;
 133         }
 134     }
 135 }
 136
 137 static PixelFormat sdl_to_qemu_pixelformat(SDL_PixelFormat *sdl_pf)
 138 {
 139     PixelFormat qemu_pf;
 140
 141     memset(&qemu_pf, 0x00, sizeof(PixelFormat));
 142
 143     qemu_pf.bits_per_pixel = sdl_pf->BitsPerPixel;
 144     qemu_pf.bytes_per_pixel = sdl_pf->BytesPerPixel;
 145     qemu_pf.depth = (qemu_pf.bits_per_pixel) == 32 ? 24 : (qemu_pf.bits_per_pixel);
 146
 147     qemu_pf.rmask = sdl_pf->Rmask;
 148     qemu_pf.gmask = sdl_pf->Gmask;
 149     qemu_pf.bmask = sdl_pf->Bmask;
 150     qemu_pf.amask = sdl_pf->Amask;
 151
 152     qemu_pf.rshift = sdl_pf->Rshift;
 153     qemu_pf.gshift = sdl_pf->Gshift;
 154     qemu_pf.bshift = sdl_pf->Bshift;
 155     qemu_pf.ashift = sdl_pf->Ashift;
 156
 157     qemu_pf.rbits = 8 - sdl_pf->Rloss;
 158     qemu_pf.gbits = 8 - sdl_pf->Gloss;
 159     qemu_pf.bbits = 8 - sdl_pf->Bloss;
 160     qemu_pf.abits = 8 - sdl_pf->Aloss;
 161
 162     qemu_pf.rmax = ((1 << qemu_pf.rbits) - 1);
 163     qemu_pf.gmax = ((1 << qemu_pf.gbits) - 1);
 164     qemu_pf.bmax = ((1 << qemu_pf.bbits) - 1);
 165     qemu_pf.amax = ((1 << qemu_pf.abits) - 1);
 166
 167     return qemu_pf;
 168 }
 169
 170 static DisplaySurface* sdl_create_displaysurface(int width, int height)
 171 {
 172     DisplaySurface *surface = (DisplaySurface*) qemu_mallocz(sizeof(DisplaySurface));
 173     if (surface == NULL) {
 174         fprintf(stderr, "sdl_create_displaysurface: malloc failed\n");
 175         exit(1);
 176     }
 177
 178     surface->width = width;
 179     surface->height = height;
 180
 181     if (scaling_active) {
 182         if (host_format.BytesPerPixel != 2 && host_format.BytesPerPixel != 4) {
 183             surface->linesize = width * 4;
 184             surface->pf = qemu_default_pixelformat(32);
 185         } else {
 186             surface->linesize = width * host_format.BytesPerPixel;
 187             surface->pf = sdl_to_qemu_pixelformat(&host_format);
 188         }
 189 #ifdef HOST_WORDS_BIGENDIAN
 190         surface->flags = QEMU_ALLOCATED_FLAG | QEMU_BIG_ENDIAN_FLAG;
 191 #else
 192         surface->flags = QEMU_ALLOCATED_FLAG;
 193 #endif
 194         surface->data = (uint8_t*) qemu_mallocz(surface->linesize * surface->height);
 195
 196         return surface;
 197     }
 198
 199     if (host_format.BitsPerPixel == 16)
 200         do_sdl_resize(width, height, 16);
 201     else
 202         do_sdl_resize(width, height, 32);
 203
 204     surface->pf = sdl_to_qemu_pixelformat(real_screen->format);
 205     surface->linesize = real_screen->pitch;
 206     surface->data = real_screen->pixels;
 207
 208 #ifdef HOST_WORDS_BIGENDIAN
 209     surface->flags = QEMU_REALPIXELS_FLAG | QEMU_BIG_ENDIAN_FLAG;
 210 #else
 211     surface->flags = QEMU_REALPIXELS_FLAG;
 212 #endif
 213     allocator = 1;
 214
 215     return surface;
 216 }
 217
 218 static void sdl_free_displaysurface(DisplaySurface *surface)
 219 {
 220     allocator = 0;
 221     if (surface == NULL)
 222         return;
 223
 224     if (surface->flags & QEMU_ALLOCATED_FLAG)
 225         qemu_free(surface->data);
 226     qemu_free(surface);
 227 }
 228
 229 static DisplaySurface* sdl_resize_displaysurface(DisplaySurface *surface, int width, int height)
 230 {
 231     sdl_free_displaysurface(surface);
 232     return sdl_create_displaysurface(width, height);
 233 }
 234
 235 /* generic keyboard conversion */
 236
 237 #include "sdl_keysym.h"
 238
 239 static kbd_layout_t *kbd_layout = NULL;
 240
 241 static uint8_t sdl_keyevent_to_keycode_generic(const SDL_KeyboardEvent *ev)
 242 {
 243     int keysym;
 244     /* workaround for X11+SDL bug with AltGR */
 245     keysym = ev->keysym.sym;
 246     if (keysym == 0 && ev->keysym.scancode == 113)
 247         keysym = SDLK_MODE;
 248     /* For Japanese key '\' and '|' */
 249     if (keysym == 92 && ev->keysym.scancode == 133) {
 250         keysym = 0xa5;
 251     }
 252     return keysym2scancode(kbd_layout, keysym) & SCANCODE_KEYMASK;
 253 }
 254
 255 /* specific keyboard conversions from scan codes */
 256
 257 #if defined(_WIN32)
 258
 259 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 260 {
 261     return ev->keysym.scancode;
 262 }
 263
 264 #else
 265
 266 #if defined(SDL_VIDEO_DRIVER_X11)
 267 #include <X11/XKBlib.h>
 268
 269 static int check_for_evdev(void)
 270 {
 271     SDL_SysWMinfo info;
 272     XkbDescPtr desc = NULL;
 273     int has_evdev = 0;
 274     char *keycodes = NULL;
 275
 276     SDL_VERSION(&info.version);
 277     if (!SDL_GetWMInfo(&info)) {
 278         return 0;
 279     }
 280     desc = XkbGetKeyboard(info.info.x11.display,
 281                           XkbGBN_AllComponentsMask,
 282                           XkbUseCoreKbd);
 283     if (desc && desc->names) {
 284         keycodes = XGetAtomName(info.info.x11.display, desc->names->keycodes);
 285         if (keycodes == NULL) {
 286             fprintf(stderr, "could not lookup keycode name\n");
 287         } else if (strstart(keycodes, "evdev", NULL)) {
 288             has_evdev = 1;
 289         } else if (!strstart(keycodes, "xfree86", NULL)) {
 290             fprintf(stderr, "unknown keycodes `%s', please report to "
 291                     "qemu-devel@nongnu.org\n", keycodes);
 292         }
 293     }
 294
 295     if (desc) {
 296         XkbFreeKeyboard(desc, XkbGBN_AllComponentsMask, True);
 297     }
 298     if (keycodes) {
 299         XFree(keycodes);
 300     }
 301     return has_evdev;
 302 }
 303 #else
 304 static int check_for_evdev(void)
 305 {
 306         return 0;
 307 }
 308 #endif
 309
 310 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 311 {
 312     int keycode;
 313     static int has_evdev = -1;
 314
 315     if (has_evdev == -1)
 316         has_evdev = check_for_evdev();
 317
 318     keycode = ev->keysym.scancode;
 319
 320     if (keycode < 9) {
 321         keycode = 0;
 322     } else if (keycode < 97) {
 323         keycode -= 8; /* just an offset */
 324     } else if (keycode < 158) {
 325         /* use conversion table */
 326         if (has_evdev)
 327             keycode = translate_evdev_keycode(keycode - 97);
 328         else
 329             keycode = translate_xfree86_keycode(keycode - 97);
 330     } else if (keycode == 208) { /* Hiragana_Katakana */
 331         keycode = 0x70;
 332     } else if (keycode == 211) { /* backslash */
 333         keycode = 0x73;
 334     } else {
 335         keycode = 0;
 336     }
 337     return keycode;
 338 }
 339
 340 #endif
 341
 342 static void reset_keys(void)
 343 {
 344     int i;
 345     for(i = 0; i < 256; i++) {
 346         if (modifiers_state[i]) {
 347             if (i & SCANCODE_GREY)
 348                 kbd_put_keycode(SCANCODE_EMUL0);
 349             kbd_put_keycode(i | SCANCODE_UP);
 350             modifiers_state[i] = 0;
 351         }
 352     }
 353 }
 354
 355 static void sdl_process_key(SDL_KeyboardEvent *ev)
 356 {
 357     int keycode, v;
 358
 359     if (ev->keysym.sym == SDLK_PAUSE) {
 360         /* specific case */
 361         v = 0;
 362         if (ev->type == SDL_KEYUP)
 363             v |= SCANCODE_UP;
 364         kbd_put_keycode(0xe1);
 365         kbd_put_keycode(0x1d | v);
 366         kbd_put_keycode(0x45 | v);
 367         return;
 368     }
 369
 370     if (kbd_layout) {
 371         keycode = sdl_keyevent_to_keycode_generic(ev);
 372     } else {
 373         keycode = sdl_keyevent_to_keycode(ev);
 374     }
 375
 376     switch(keycode) {
 377     case 0x00:
 378         /* sent when leaving window: reset the modifiers state */
 379         reset_keys();
 380         return;
 381     case 0x2a:                          /* Left Shift */
 382     case 0x36:                          /* Right Shift */
 383     case 0x1d:                          /* Left CTRL */
 384     case 0x9d:                          /* Right CTRL */
 385     case 0x38:                          /* Left ALT */
 386     case 0xb8:                         /* Right ALT */
 387         if (ev->type == SDL_KEYUP)
 388             modifiers_state[keycode] = 0;
 389         else
 390             modifiers_state[keycode] = 1;
 391         break;
 392     case 0x45: /* num lock */
 393     case 0x3a: /* caps lock */
 394         /* SDL does not send the key up event, so we generate it */
 395         kbd_put_keycode(keycode);
 396         kbd_put_keycode(keycode | SCANCODE_UP);
 397         return;
 398     }
 399
 400     /* now send the key code */
 401     if (keycode & SCANCODE_GREY)
 402         kbd_put_keycode(SCANCODE_EMUL0);
 403     if (ev->type == SDL_KEYUP)
 404         kbd_put_keycode(keycode | SCANCODE_UP);
 405     else
 406         kbd_put_keycode(keycode & SCANCODE_KEYCODEMASK);
 407 }
 408
 409 static void sdl_update_caption(void)
 410 {
 411     char win_title[1024];
 412     char icon_title[1024];
 413     const char *status = "";
 414
 415     if (!vm_running)
 416         status = " [Stopped]";
 417     else if (gui_grab) {
 418         if (alt_grab)
 419             status = " - Press Ctrl-Alt-Shift to exit mouse grab";
 420         else if (ctrl_grab)
 421             status = " - Press Right-Ctrl to exit mouse grab";
 422         else
 423             status = " - Press Ctrl-Alt to exit mouse grab";
 424     }
 425
 426     if (qemu_name) {
 427         snprintf(win_title, sizeof(win_title), "QEMU (%s)%s", qemu_name, status);
 428         snprintf(icon_title, sizeof(icon_title), "QEMU (%s)", qemu_name);
 429     } else {
 430         snprintf(win_title, sizeof(win_title), "QEMU%s", status);
 431         snprintf(icon_title, sizeof(icon_title), "QEMU");
 432     }
 433
 434     SDL_WM_SetCaption(win_title, icon_title);
 435 }
 436
 437 static void sdl_hide_cursor(void)
 438 {
 439     if (!cursor_hide)
 440         return;
 441
 442     if (kbd_mouse_is_absolute()) {
 443         SDL_ShowCursor(1);
 444         SDL_SetCursor(sdl_cursor_hidden);
 445     } else {
 446         SDL_ShowCursor(0);
 447     }
 448 }
 449
 450 static void sdl_show_cursor(void)
 451 {
 452     if (!cursor_hide)
 453         return;
 454
 455     if (!kbd_mouse_is_absolute()) {
 456         SDL_ShowCursor(1);
 457         if (guest_cursor &&
 458                 (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
 459             SDL_SetCursor(guest_sprite);
 460         else
 461             SDL_SetCursor(sdl_cursor_normal);
 462     }
 463 }
 464
 465 static void sdl_grab_start(void)
 466 {
 467     if (guest_cursor) {
 468         SDL_SetCursor(guest_sprite);
 469         if (!kbd_mouse_is_absolute() && !absolute_enabled)
 470             SDL_WarpMouse(guest_x, guest_y);
 471     } else
 472         sdl_hide_cursor();
 473
 474     if (SDL_WM_GrabInput(SDL_GRAB_ON) == SDL_GRAB_ON) {
 475         gui_grab = 1;
 476         sdl_update_caption();
 477     } else
 478         sdl_show_cursor();
 479 }
 480
 481 static void sdl_grab_end(void)
 482 {
 483     SDL_WM_GrabInput(SDL_GRAB_OFF);
 484     gui_grab = 0;
 485     sdl_show_cursor();
 486     sdl_update_caption();
 487 }
 488
 489 static void sdl_send_mouse_event(int dx, int dy, int dz, int x, int y, int state)
 490 {
 491     int buttons;
 492     buttons = 0;
 493     if (state & SDL_BUTTON(SDL_BUTTON_LEFT))
 494         buttons |= MOUSE_EVENT_LBUTTON;
 495     if (state & SDL_BUTTON(SDL_BUTTON_RIGHT))
 496         buttons |= MOUSE_EVENT_RBUTTON;
 497     if (state & SDL_BUTTON(SDL_BUTTON_MIDDLE))
 498         buttons |= MOUSE_EVENT_MBUTTON;
 499
 500     if (kbd_mouse_is_absolute()) {
 501         if (!absolute_enabled) {
 502             sdl_hide_cursor();
 503             if (gui_grab) {
 504                 sdl_grab_end();
 505             }
 506             absolute_enabled = 1;
 507         }
 508
 509        dx = x * 0x7FFF / (width - 1);
 510        dy = y * 0x7FFF / (height - 1);
 511     } else if (absolute_enabled) {
 512         sdl_show_cursor();
 513         absolute_enabled = 0;
 514     } else if (guest_cursor) {
 515         x -= guest_x;
 516         y -= guest_y;
 517         guest_x += x;
 518         guest_y += y;
 519         dx = x;
 520         dy = y;
 521     }
 522
 523     kbd_mouse_event(dx, dy, dz, buttons);
 524 }
 525
 526 static void toggle_full_screen(DisplayState *ds)
 527 {
 528     gui_fullscreen = !gui_fullscreen;
 529     do_sdl_resize(real_screen->w, real_screen->h, real_screen->format->BitsPerPixel);
 530     if (gui_fullscreen) {
 531         scaling_active = 0;
 532         gui_saved_grab = gui_grab;
 533         sdl_grab_start();
 534     } else {
 535         if (!gui_saved_grab)
 536             sdl_grab_end();
 537     }
 538     vga_hw_invalidate();
 539     vga_hw_update();
 540 }
 541
 542 static void sdl_refresh(DisplayState *ds)
 543 {
 544     SDL_Event ev1, *ev = &ev1;
 545     int mod_state;
 546     int buttonstate = SDL_GetMouseState(NULL, NULL);
 547
 548     if (last_vm_running != vm_running) {
 549         last_vm_running = vm_running;
 550         sdl_update_caption();
 551     }
 552
 553     vga_hw_update();
 554     SDL_EnableUNICODE(!is_graphic_console());
 555
 556     while (SDL_PollEvent(ev)) {
 557         switch (ev->type) {
 558         case SDL_VIDEOEXPOSE:
 559             sdl_update(ds, 0, 0, real_screen->w, real_screen->h);
 560             break;
 561         case SDL_KEYDOWN:
 562         case SDL_KEYUP:
 563             if (ev->type == SDL_KEYDOWN) {
 564                 if (alt_grab) {
 565                     mod_state = (SDL_GetModState() & (gui_grab_code | KMOD_LSHIFT)) ==
 566                                 (gui_grab_code | KMOD_LSHIFT);
 567                 } else if (ctrl_grab) {
 568                     mod_state = (SDL_GetModState() & KMOD_RCTRL) == KMOD_RCTRL;
 569                 } else {
 570                     mod_state = (SDL_GetModState() & gui_grab_code) ==
 571                                 gui_grab_code;
 572                 }
 573                 gui_key_modifier_pressed = mod_state;
 574                 if (gui_key_modifier_pressed) {
 575                     int keycode;
 576                     keycode = sdl_keyevent_to_keycode(&ev->key);
 577                     switch(keycode) {
 578                     case 0x21: /* 'f' key on US keyboard */
 579                         toggle_full_screen(ds);
 580                         gui_keysym = 1;
 581                         break;
 582                     case 0x16: /* 'u' key on US keyboard */
 583                         scaling_active = 0;
 584                         sdl_resize(ds);
 585                         vga_hw_invalidate();
 586                         vga_hw_update();
 587                         break;
 588                     case 0x02 ... 0x0a: /* '1' to '9' keys */
 589                         /* Reset the modifiers sent to the current console */
 590                         reset_keys();
 591                         console_select(keycode - 0x02);
 592                         if (!is_graphic_console()) {
 593                             /* display grab if going to a text console */
 594                             if (gui_grab)
 595                                 sdl_grab_end();
 596                         }
 597                         gui_keysym = 1;
 598                         break;
 599                     default:
 600                         break;
 601                     }
 602                 } else if (!is_graphic_console()) {
 603                     int keysym;
 604                     keysym = 0;
 605                     if (ev->key.keysym.mod & (KMOD_LCTRL | KMOD_RCTRL)) {
 606                         switch(ev->key.keysym.sym) {
 607                         case SDLK_UP: keysym = QEMU_KEY_CTRL_UP; break;
 608                         case SDLK_DOWN: keysym = QEMU_KEY_CTRL_DOWN; break;
 609                         case SDLK_LEFT: keysym = QEMU_KEY_CTRL_LEFT; break;
 610                         case SDLK_RIGHT: keysym = QEMU_KEY_CTRL_RIGHT; break;
 611                         case SDLK_HOME: keysym = QEMU_KEY_CTRL_HOME; break;
 612                         case SDLK_END: keysym = QEMU_KEY_CTRL_END; break;
 613                         case SDLK_PAGEUP: keysym = QEMU_KEY_CTRL_PAGEUP; break;
 614                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_CTRL_PAGEDOWN; break;
 615                         default: break;
 616                         }
 617                     } else {
 618                         switch(ev->key.keysym.sym) {
 619                         case SDLK_UP: keysym = QEMU_KEY_UP; break;
 620                         case SDLK_DOWN: keysym = QEMU_KEY_DOWN; break;
 621                         case SDLK_LEFT: keysym = QEMU_KEY_LEFT; break;
 622                         case SDLK_RIGHT: keysym = QEMU_KEY_RIGHT; break;
 623                         case SDLK_HOME: keysym = QEMU_KEY_HOME; break;
 624                         case SDLK_END: keysym = QEMU_KEY_END; break;
 625                         case SDLK_PAGEUP: keysym = QEMU_KEY_PAGEUP; break;
 626                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_PAGEDOWN; break;
 627                         case SDLK_BACKSPACE: keysym = QEMU_KEY_BACKSPACE; break;
 628                         case SDLK_DELETE: keysym = QEMU_KEY_DELETE; break;
 629                         default: break;
 630                         }
 631                     }
 632                     if (keysym) {
 633                         kbd_put_keysym(keysym);
 634                     } else if (ev->key.keysym.unicode != 0) {
 635                         kbd_put_keysym(ev->key.keysym.unicode);
 636                     }
 637                 }
 638             } else if (ev->type == SDL_KEYUP) {
 639                 if (!alt_grab) {
 640                     mod_state = (ev->key.keysym.mod & gui_grab_code);
 641                 } else {
 642                     mod_state = (ev->key.keysym.mod &
 643                                  (gui_grab_code | KMOD_LSHIFT));
 644                 }
 645                 if (!mod_state) {
 646                     if (gui_key_modifier_pressed) {
 647                         gui_key_modifier_pressed = 0;
 648                         if (gui_keysym == 0) {
 649                             /* exit/enter grab if pressing Ctrl-Alt */
 650                             if (!gui_grab) {
 651                                 /* if the application is not active,
 652                                    do not try to enter grab state. It
 653                                    prevents
 654                                    'SDL_WM_GrabInput(SDL_GRAB_ON)'
 655                                    from blocking all the application
 656                                    (SDL bug). */
 657                                 if (SDL_GetAppState() & SDL_APPACTIVE)
 658                                     sdl_grab_start();
 659                             } else {
 660                                 sdl_grab_end();
 661                             }
 662                             /* SDL does not send back all the
 663                                modifiers key, so we must correct it */
 664                             reset_keys();
 665                             break;
 666                         }
 667                         gui_keysym = 0;
 668                     }
 669                 }
 670             }
 671             if (is_graphic_console() && !gui_keysym)
 672                 sdl_process_key(&ev->key);
 673             break;
 674         case SDL_QUIT:
 675             if (!no_quit)
 676                 qemu_system_shutdown_request();
 677             break;
 678         case SDL_MOUSEMOTION:
 679             if (gui_grab || kbd_mouse_is_absolute() ||
 680                 absolute_enabled) {
 681                 sdl_send_mouse_event(ev->motion.xrel, ev->motion.yrel, 0,
 682                        ev->motion.x, ev->motion.y, ev->motion.state);
 683             }
 684             break;
 685         case SDL_MOUSEBUTTONDOWN:
 686         case SDL_MOUSEBUTTONUP:
 687             {
 688                 SDL_MouseButtonEvent *bev = &ev->button;
 689                 if (!gui_grab && !kbd_mouse_is_absolute()) {
 690                     if (ev->type == SDL_MOUSEBUTTONDOWN &&
 691                         (bev->button == SDL_BUTTON_LEFT)) {
 692                         /* start grabbing all events */
 693                         sdl_grab_start();
 694                     }
 695                 } else {
 696                     int dz;
 697                     dz = 0;
 698                     if (ev->type == SDL_MOUSEBUTTONDOWN) {
 699                         buttonstate |= SDL_BUTTON(bev->button);
 700                     } else {
 701                         buttonstate &= ~SDL_BUTTON(bev->button);
 702                     }
 703 #ifdef SDL_BUTTON_WHEELUP
 704                     if (bev->button == SDL_BUTTON_WHEELUP && ev->type == SDL_MOUSEBUTTONDOWN) {
 705                         dz = -1;
 706                     } else if (bev->button == SDL_BUTTON_WHEELDOWN && ev->type == SDL_MOUSEBUTTONDOWN) {
 707                         dz = 1;
 708                     }
 709 #endif
 710                     sdl_send_mouse_event(0, 0, dz, bev->x, bev->y, buttonstate);
 711                 }
 712             }
 713             break;
 714         case SDL_ACTIVEEVENT:
 715             if (gui_grab && ev->active.state == SDL_APPINPUTFOCUS &&
 716                 !ev->active.gain && !gui_fullscreen_initial_grab) {
 717                 sdl_grab_end();
 718             }
 719             if (ev->active.state & SDL_APPACTIVE) {
 720                 if (ev->active.gain) {
 721                     /* Back to default interval */
 722                     dcl->gui_timer_interval = 0;
 723                     dcl->idle = 0;
 724                 } else {
 725                     /* Sleeping interval */
 726                     dcl->gui_timer_interval = 500;
 727                     dcl->idle = 1;
 728                 }
 729             }
 730             break;
 731         case SDL_VIDEORESIZE:
 732         {
 733             SDL_ResizeEvent *rev = &ev->resize;
 734             int bpp = real_screen->format->BitsPerPixel;
 735             if (bpp != 16 && bpp != 32)
 736                 bpp = 32;
 737             do_sdl_resize(rev->w, rev->h, bpp);
 738             scaling_active = 1;
 739             if (!is_buffer_shared(ds->surface)) {
 740                 ds->surface = qemu_resize_displaysurface(ds, ds_get_width(ds), ds_get_height(ds));
 741                 dpy_resize(ds);
 742             }
 743             vga_hw_invalidate();
 744             vga_hw_update();
 745             break;
 746         }
 747         default:
 748             break;
 749         }
 750     }
 751 }
 752
 753 static void sdl_fill(DisplayState *ds, int x, int y, int w, int h, uint32_t c)
 754 {
 755     SDL_Rect dst = { x, y, w, h };
 756     SDL_FillRect(real_screen, &dst, c);
 757 }
 758
 759 static void sdl_mouse_warp(int x, int y, int on)
 760 {
 761     if (on) {
 762         if (!guest_cursor)
 763             sdl_show_cursor();
 764         if (gui_grab || kbd_mouse_is_absolute() || absolute_enabled) {
 765             SDL_SetCursor(guest_sprite);
 766             if (!kbd_mouse_is_absolute() && !absolute_enabled)
 767                 SDL_WarpMouse(x, y);
 768         }
 769     } else if (gui_grab)
 770         sdl_hide_cursor();
 771     guest_cursor = on;
 772     guest_x = x, guest_y = y;
 773 }
 774
 775 static void sdl_mouse_define(int width, int height, int bpp,
 776                              int hot_x, int hot_y,
 777                              uint8_t *image, uint8_t *mask)
 778 {
 779     uint8_t sprite[256], *line;
 780     int x, y, dst, bypl, src = 0;
 781     if (guest_sprite)
 782         SDL_FreeCursor(guest_sprite);
 783
 784     memset(sprite, 0, 256);
 785     bypl = ((width * bpp + 31) >> 5) << 2;
 786     for (y = 0, dst = 0; y < height; y ++, image += bypl) {
 787         line = image;
 788         for (x = 0; x < width; x ++, dst ++) {
 789             switch (bpp) {
 790             case 32:
 791                 src = *(line ++); src |= *(line ++); src |= *(line ++); line++;
 792                 break;
 793             case 24:
 794                 src = *(line ++); src |= *(line ++); src |= *(line ++);
 795                 break;
 796             case 16:
 797             case 15:
 798                 src = *(line ++); src |= *(line ++);
 799                 break;
 800             case 8:
 801                 src = *(line ++);
 802                 break;
 803             case 4:
 804                 src = 0xf & (line[x >> 1] >> ((x & 1)) << 2);
 805                 break;
 806             case 2:
 807                 src = 3 & (line[x >> 2] >> ((x & 3)) << 1);
 808                 break;
 809             case 1:
 810                 src = 1 & (line[x >> 3] >> (x & 7));
 811                 break;
 812             }
 813             if (!src)
 814                 sprite[dst >> 3] |= (1 << (~dst & 7)) & mask[dst >> 3];
 815         }
 816     }
 817     guest_sprite = SDL_CreateCursor(sprite, mask, width, height, hot_x, hot_y);
 818
 819     if (guest_cursor &&
 820             (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
 821         SDL_SetCursor(guest_sprite);
 822 }
 823
 824 static void sdl_cleanup(void)
 825 {
 826     if (guest_sprite)
 827         SDL_FreeCursor(guest_sprite);
 828     SDL_QuitSubSystem(SDL_INIT_VIDEO);
 829 }
 830
 831 void sdl_display_init(DisplayState *ds, int full_screen, int no_frame)
 832 {
 833     int flags;
 834     uint8_t data = 0;
 835     DisplayAllocator *da;
 836     const SDL_VideoInfo *vi;
 837
 838 #if defined(__APPLE__)
 839     /* always use generic keymaps */
 840     if (!keyboard_layout)
 841         keyboard_layout = "en-us";
 842 #endif
 843     if(keyboard_layout) {
 844         kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
 845         if (!kbd_layout)
 846             exit(1);
 847     }
 848
 849     if (no_frame)
 850         gui_noframe = 1;
 851
 852     flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
 853     if (SDL_Init (flags)) {
 854         fprintf(stderr, "Could not initialize SDL(%s) - exiting\n",
 855                 SDL_GetError());
 856         exit(1);
 857     }
 858     vi = SDL_GetVideoInfo();
 859     host_format = *(vi->vfmt);
 860
 861     dcl = qemu_mallocz(sizeof(DisplayChangeListener));
 862     dcl->dpy_update = sdl_update;
 863     dcl->dpy_resize = sdl_resize;
 864     dcl->dpy_refresh = sdl_refresh;
 865     dcl->dpy_setdata = sdl_setdata;
 866     dcl->dpy_fill = sdl_fill;
 867     ds->mouse_set = sdl_mouse_warp;
 868     ds->cursor_define = sdl_mouse_define;
 869     register_displaychangelistener(ds, dcl);
 870
 871     da = qemu_mallocz(sizeof(DisplayAllocator));
 872     da->create_displaysurface = sdl_create_displaysurface;
 873     da->resize_displaysurface = sdl_resize_displaysurface;
 874     da->free_displaysurface = sdl_free_displaysurface;
 875     if (register_displayallocator(ds, da) == da) {
 876         dpy_resize(ds);
 877     }
 878
 879     sdl_update_caption();
 880     SDL_EnableKeyRepeat(250, 50);
 881     gui_grab = 0;
 882
 883     sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
 884     sdl_cursor_normal = SDL_GetCursor();
 885
 886     atexit(sdl_cleanup);
 887     if (full_screen) {
 888         gui_fullscreen = 1;
 889         gui_fullscreen_initial_grab = 1;
 890         sdl_grab_start();
 891     }
 892 }