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 #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 static Notifier mouse_mode_notifier;
  61
  62 static void sdl_update(DisplayState *ds, int x, int y, int w, int h)
  63 {
  64     //    printf("updating x=%d y=%d w=%d h=%d\n", x, y, w, h);
  65     SDL_Rect rec;
  66     rec.x = x;
  67     rec.y = y;
  68     rec.w = w;
  69     rec.h = h;
  70
  71     if (guest_screen) {
  72         if (!scaling_active) {
  73             SDL_BlitSurface(guest_screen, &rec, real_screen, &rec);
  74         } else {
  75             if (sdl_zoom_blit(guest_screen, real_screen, SMOOTHING_ON, &rec) < 0) {
  76                 fprintf(stderr, "Zoom blit failed\n");
  77                 exit(1);
  78             }
  79         }
  80     }
  81     SDL_UpdateRect(real_screen, rec.x, rec.y, rec.w, rec.h);
  82 }
  83
  84 static void sdl_setdata(DisplayState *ds)
  85 {
  86     if (guest_screen != NULL) SDL_FreeSurface(guest_screen);
  87
  88     guest_screen = SDL_CreateRGBSurfaceFrom(ds_get_data(ds), ds_get_width(ds), ds_get_height(ds),
  89                                             ds_get_bits_per_pixel(ds), ds_get_linesize(ds),
  90                                             ds->surface->pf.rmask, ds->surface->pf.gmask,
  91                                             ds->surface->pf.bmask, ds->surface->pf.amask);
  92 }
  93
  94 static void do_sdl_resize(int new_width, int new_height, int bpp)
  95 {
  96     int flags;
  97
  98     //    printf("resizing to %d %d\n", w, h);
  99
 100     flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
 101     if (gui_fullscreen) {
 102         flags |= SDL_FULLSCREEN;
 103     } else {
 104         flags |= SDL_RESIZABLE;
 105     }
 106     if (gui_noframe)
 107         flags |= SDL_NOFRAME;
 108
 109     width = new_width;
 110     height = new_height;
 111     real_screen = SDL_SetVideoMode(width, height, bpp, flags);
 112     if (!real_screen) {
 113         fprintf(stderr, "Could not open SDL display (%dx%dx%d): %s\n", width,
 114                 height, bpp, SDL_GetError());
 115         exit(1);
 116     }
 117 }
 118
 119 static void sdl_resize(DisplayState *ds)
 120 {
 121     if  (!allocator) {
 122         if (!scaling_active)
 123             do_sdl_resize(ds_get_width(ds), ds_get_height(ds), 0);
 124         else if (real_screen->format->BitsPerPixel != ds_get_bits_per_pixel(ds))
 125             do_sdl_resize(real_screen->w, real_screen->h, ds_get_bits_per_pixel(ds));
 126         sdl_setdata(ds);
 127     } else {
 128         if (guest_screen != NULL) {
 129             SDL_FreeSurface(guest_screen);
 130             guest_screen = NULL;
 131         }
 132     }
 133 }
 134
 135 static PixelFormat sdl_to_qemu_pixelformat(SDL_PixelFormat *sdl_pf)
 136 {
 137     PixelFormat qemu_pf;
 138
 139     memset(&qemu_pf, 0x00, sizeof(PixelFormat));
 140
 141     qemu_pf.bits_per_pixel = sdl_pf->BitsPerPixel;
 142     qemu_pf.bytes_per_pixel = sdl_pf->BytesPerPixel;
 143     qemu_pf.depth = (qemu_pf.bits_per_pixel) == 32 ? 24 : (qemu_pf.bits_per_pixel);
 144
 145     qemu_pf.rmask = sdl_pf->Rmask;
 146     qemu_pf.gmask = sdl_pf->Gmask;
 147     qemu_pf.bmask = sdl_pf->Bmask;
 148     qemu_pf.amask = sdl_pf->Amask;
 149
 150     qemu_pf.rshift = sdl_pf->Rshift;
 151     qemu_pf.gshift = sdl_pf->Gshift;
 152     qemu_pf.bshift = sdl_pf->Bshift;
 153     qemu_pf.ashift = sdl_pf->Ashift;
 154
 155     qemu_pf.rbits = 8 - sdl_pf->Rloss;
 156     qemu_pf.gbits = 8 - sdl_pf->Gloss;
 157     qemu_pf.bbits = 8 - sdl_pf->Bloss;
 158     qemu_pf.abits = 8 - sdl_pf->Aloss;
 159
 160     qemu_pf.rmax = ((1 << qemu_pf.rbits) - 1);
 161     qemu_pf.gmax = ((1 << qemu_pf.gbits) - 1);
 162     qemu_pf.bmax = ((1 << qemu_pf.bbits) - 1);
 163     qemu_pf.amax = ((1 << qemu_pf.abits) - 1);
 164
 165     return qemu_pf;
 166 }
 167
 168 static DisplaySurface* sdl_create_displaysurface(int width, int height)
 169 {
 170     DisplaySurface *surface = (DisplaySurface*) qemu_mallocz(sizeof(DisplaySurface));
 171     if (surface == NULL) {
 172         fprintf(stderr, "sdl_create_displaysurface: malloc failed\n");
 173         exit(1);
 174     }
 175
 176     surface->width = width;
 177     surface->height = height;
 178
 179     if (scaling_active) {
 180         int linesize;
 181         PixelFormat pf;
 182         if (host_format.BytesPerPixel != 2 && host_format.BytesPerPixel != 4) {
 183             linesize = width * 4;
 184             pf = qemu_default_pixelformat(32);
 185         } else {
 186             linesize = width * host_format.BytesPerPixel;
 187             pf = sdl_to_qemu_pixelformat(&host_format);
 188         }
 189         qemu_alloc_display(surface, width, height, linesize, pf, 0);
 190         return surface;
 191     }
 192
 193     if (host_format.BitsPerPixel == 16)
 194         do_sdl_resize(width, height, 16);
 195     else
 196         do_sdl_resize(width, height, 32);
 197
 198     surface->pf = sdl_to_qemu_pixelformat(real_screen->format);
 199     surface->linesize = real_screen->pitch;
 200     surface->data = real_screen->pixels;
 201
 202 #ifdef HOST_WORDS_BIGENDIAN
 203     surface->flags = QEMU_REALPIXELS_FLAG | QEMU_BIG_ENDIAN_FLAG;
 204 #else
 205     surface->flags = QEMU_REALPIXELS_FLAG;
 206 #endif
 207     allocator = 1;
 208
 209     return surface;
 210 }
 211
 212 static void sdl_free_displaysurface(DisplaySurface *surface)
 213 {
 214     allocator = 0;
 215     if (surface == NULL)
 216         return;
 217
 218     if (surface->flags & QEMU_ALLOCATED_FLAG)
 219         qemu_free(surface->data);
 220     qemu_free(surface);
 221 }
 222
 223 static DisplaySurface* sdl_resize_displaysurface(DisplaySurface *surface, int width, int height)
 224 {
 225     sdl_free_displaysurface(surface);
 226     return sdl_create_displaysurface(width, height);
 227 }
 228
 229 /* generic keyboard conversion */
 230
 231 #include "sdl_keysym.h"
 232
 233 static kbd_layout_t *kbd_layout = NULL;
 234
 235 static uint8_t sdl_keyevent_to_keycode_generic(const SDL_KeyboardEvent *ev)
 236 {
 237     int keysym;
 238     /* workaround for X11+SDL bug with AltGR */
 239     keysym = ev->keysym.sym;
 240     if (keysym == 0 && ev->keysym.scancode == 113)
 241         keysym = SDLK_MODE;
 242     /* For Japanese key '\' and '|' */
 243     if (keysym == 92 && ev->keysym.scancode == 133) {
 244         keysym = 0xa5;
 245     }
 246     return keysym2scancode(kbd_layout, keysym) & SCANCODE_KEYMASK;
 247 }
 248
 249 /* specific keyboard conversions from scan codes */
 250
 251 #if defined(_WIN32)
 252
 253 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 254 {
 255     return ev->keysym.scancode;
 256 }
 257
 258 #else
 259
 260 #if defined(SDL_VIDEO_DRIVER_X11)
 261 #include <X11/XKBlib.h>
 262
 263 static int check_for_evdev(void)
 264 {
 265     SDL_SysWMinfo info;
 266     XkbDescPtr desc = NULL;
 267     int has_evdev = 0;
 268     char *keycodes = NULL;
 269
 270     SDL_VERSION(&info.version);
 271     if (!SDL_GetWMInfo(&info)) {
 272         return 0;
 273     }
 274     desc = XkbGetKeyboard(info.info.x11.display,
 275                           XkbGBN_AllComponentsMask,
 276                           XkbUseCoreKbd);
 277     if (desc && desc->names) {
 278         keycodes = XGetAtomName(info.info.x11.display, desc->names->keycodes);
 279         if (keycodes == NULL) {
 280             fprintf(stderr, "could not lookup keycode name\n");
 281         } else if (strstart(keycodes, "evdev", NULL)) {
 282             has_evdev = 1;
 283         } else if (!strstart(keycodes, "xfree86", NULL)) {
 284             fprintf(stderr, "unknown keycodes `%s', please report to "
 285                     "qemu-devel@nongnu.org\n", keycodes);
 286         }
 287     }
 288
 289     if (desc) {
 290         XkbFreeKeyboard(desc, XkbGBN_AllComponentsMask, True);
 291     }
 292     if (keycodes) {
 293         XFree(keycodes);
 294     }
 295     return has_evdev;
 296 }
 297 #else
 298 static int check_for_evdev(void)
 299 {
 300         return 0;
 301 }
 302 #endif
 303
 304 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 305 {
 306     int keycode;
 307     static int has_evdev = -1;
 308
 309     if (has_evdev == -1)
 310         has_evdev = check_for_evdev();
 311
 312     keycode = ev->keysym.scancode;
 313
 314     if (keycode < 9) {
 315         keycode = 0;
 316     } else if (keycode < 97) {
 317         keycode -= 8; /* just an offset */
 318     } else if (keycode < 158) {
 319         /* use conversion table */
 320         if (has_evdev)
 321             keycode = translate_evdev_keycode(keycode - 97);
 322         else
 323             keycode = translate_xfree86_keycode(keycode - 97);
 324     } else if (keycode == 208) { /* Hiragana_Katakana */
 325         keycode = 0x70;
 326     } else if (keycode == 211) { /* backslash */
 327         keycode = 0x73;
 328     } else {
 329         keycode = 0;
 330     }
 331     return keycode;
 332 }
 333
 334 #endif
 335
 336 static void reset_keys(void)
 337 {
 338     int i;
 339     for(i = 0; i < 256; i++) {
 340         if (modifiers_state[i]) {
 341             if (i & SCANCODE_GREY)
 342                 kbd_put_keycode(SCANCODE_EMUL0);
 343             kbd_put_keycode(i | SCANCODE_UP);
 344             modifiers_state[i] = 0;
 345         }
 346     }
 347 }
 348
 349 static void sdl_process_key(SDL_KeyboardEvent *ev)
 350 {
 351     int keycode, v;
 352
 353     if (ev->keysym.sym == SDLK_PAUSE) {
 354         /* specific case */
 355         v = 0;
 356         if (ev->type == SDL_KEYUP)
 357             v |= SCANCODE_UP;
 358         kbd_put_keycode(0xe1);
 359         kbd_put_keycode(0x1d | v);
 360         kbd_put_keycode(0x45 | v);
 361         return;
 362     }
 363
 364     if (kbd_layout) {
 365         keycode = sdl_keyevent_to_keycode_generic(ev);
 366     } else {
 367         keycode = sdl_keyevent_to_keycode(ev);
 368     }
 369
 370     switch(keycode) {
 371     case 0x00:
 372         /* sent when leaving window: reset the modifiers state */
 373         reset_keys();
 374         return;
 375     case 0x2a:                          /* Left Shift */
 376     case 0x36:                          /* Right Shift */
 377     case 0x1d:                          /* Left CTRL */
 378     case 0x9d:                          /* Right CTRL */
 379     case 0x38:                          /* Left ALT */
 380     case 0xb8:                         /* Right ALT */
 381         if (ev->type == SDL_KEYUP)
 382             modifiers_state[keycode] = 0;
 383         else
 384             modifiers_state[keycode] = 1;
 385         break;
 386 #define QEMU_SDL_VERSION ((SDL_MAJOR_VERSION << 8) + SDL_MINOR_VERSION)
 387 #if QEMU_SDL_VERSION < 0x102 || QEMU_SDL_VERSION == 0x102 && SDL_PATCHLEVEL < 14
 388         /* SDL versions before 1.2.14 don't support key up for caps/num lock. */
 389     case 0x45: /* num lock */
 390     case 0x3a: /* caps lock */
 391         /* SDL does not send the key up event, so we generate it */
 392         kbd_put_keycode(keycode);
 393         kbd_put_keycode(keycode | SCANCODE_UP);
 394         return;
 395 #endif
 396     }
 397
 398     /* now send the key code */
 399     if (keycode & SCANCODE_GREY)
 400         kbd_put_keycode(SCANCODE_EMUL0);
 401     if (ev->type == SDL_KEYUP)
 402         kbd_put_keycode(keycode | SCANCODE_UP);
 403     else
 404         kbd_put_keycode(keycode & SCANCODE_KEYCODEMASK);
 405 }
 406
 407 static void sdl_update_caption(void)
 408 {
 409     char win_title[1024];
 410     char icon_title[1024];
 411     const char *status = "";
 412
 413     if (!vm_running)
 414         status = " [Stopped]";
 415     else if (gui_grab) {
 416         if (alt_grab)
 417             status = " - Press Ctrl-Alt-Shift to exit mouse grab";
 418         else if (ctrl_grab)
 419             status = " - Press Right-Ctrl to exit mouse grab";
 420         else
 421             status = " - Press Ctrl-Alt to exit mouse grab";
 422     }
 423
 424     if (qemu_name) {
 425         snprintf(win_title, sizeof(win_title), "QEMU (%s)%s", qemu_name, status);
 426         snprintf(icon_title, sizeof(icon_title), "QEMU (%s)", qemu_name);
 427     } else {
 428         snprintf(win_title, sizeof(win_title), "QEMU%s", status);
 429         snprintf(icon_title, sizeof(icon_title), "QEMU");
 430     }
 431
 432     SDL_WM_SetCaption(win_title, icon_title);
 433 }
 434
 435 static void sdl_hide_cursor(void)
 436 {
 437     if (!cursor_hide)
 438         return;
 439
 440     if (kbd_mouse_is_absolute()) {
 441         SDL_ShowCursor(1);
 442         SDL_SetCursor(sdl_cursor_hidden);
 443     } else {
 444         SDL_ShowCursor(0);
 445     }
 446 }
 447
 448 static void sdl_show_cursor(void)
 449 {
 450     if (!cursor_hide)
 451         return;
 452
 453     if (!kbd_mouse_is_absolute()) {
 454         SDL_ShowCursor(1);
 455         if (guest_cursor &&
 456                 (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
 457             SDL_SetCursor(guest_sprite);
 458         else
 459             SDL_SetCursor(sdl_cursor_normal);
 460     }
 461 }
 462
 463 static void sdl_grab_start(void)
 464 {
 465     if (guest_cursor) {
 466         SDL_SetCursor(guest_sprite);
 467         if (!kbd_mouse_is_absolute() && !absolute_enabled)
 468             SDL_WarpMouse(guest_x, guest_y);
 469     } else
 470         sdl_hide_cursor();
 471
 472     if (SDL_WM_GrabInput(SDL_GRAB_ON) == SDL_GRAB_ON) {
 473         gui_grab = 1;
 474         sdl_update_caption();
 475     } else
 476         sdl_show_cursor();
 477 }
 478
 479 static void sdl_grab_end(void)
 480 {
 481     SDL_WM_GrabInput(SDL_GRAB_OFF);
 482     gui_grab = 0;
 483     sdl_show_cursor();
 484     sdl_update_caption();
 485 }
 486
 487 static void sdl_mouse_mode_change(Notifier *notify, void *data)
 488 {
 489     if (kbd_mouse_is_absolute()) {
 490         if (!absolute_enabled) {
 491             sdl_hide_cursor();
 492             if (gui_grab) {
 493                 sdl_grab_end();
 494             }
 495             absolute_enabled = 1;
 496         }
 497     } else if (absolute_enabled) {
 498         sdl_show_cursor();
 499         absolute_enabled = 0;
 500     }
 501 }
 502
 503 static void sdl_send_mouse_event(int dx, int dy, int dz, int x, int y, int state)
 504 {
 505     int buttons;
 506     buttons = 0;
 507     if (state & SDL_BUTTON(SDL_BUTTON_LEFT))
 508         buttons |= MOUSE_EVENT_LBUTTON;
 509     if (state & SDL_BUTTON(SDL_BUTTON_RIGHT))
 510         buttons |= MOUSE_EVENT_RBUTTON;
 511     if (state & SDL_BUTTON(SDL_BUTTON_MIDDLE))
 512         buttons |= MOUSE_EVENT_MBUTTON;
 513
 514     if (kbd_mouse_is_absolute()) {
 515        dx = x * 0x7FFF / (width - 1);
 516        dy = y * 0x7FFF / (height - 1);
 517     } else if (guest_cursor) {
 518         x -= guest_x;
 519         y -= guest_y;
 520         guest_x += x;
 521         guest_y += y;
 522         dx = x;
 523         dy = y;
 524     }
 525
 526     kbd_mouse_event(dx, dy, dz, buttons);
 527 }
 528
 529 static void toggle_full_screen(DisplayState *ds)
 530 {
 531     gui_fullscreen = !gui_fullscreen;
 532     do_sdl_resize(real_screen->w, real_screen->h, real_screen->format->BitsPerPixel);
 533     if (gui_fullscreen) {
 534         scaling_active = 0;
 535         gui_saved_grab = gui_grab;
 536         sdl_grab_start();
 537     } else {
 538         if (!gui_saved_grab)
 539             sdl_grab_end();
 540     }
 541     vga_hw_invalidate();
 542     vga_hw_update();
 543 }
 544
 545 static void sdl_refresh(DisplayState *ds)
 546 {
 547     SDL_Event ev1, *ev = &ev1;
 548     int mod_state;
 549     int buttonstate = SDL_GetMouseState(NULL, NULL);
 550
 551     if (last_vm_running != vm_running) {
 552         last_vm_running = vm_running;
 553         sdl_update_caption();
 554     }
 555
 556     vga_hw_update();
 557     SDL_EnableUNICODE(!is_graphic_console());
 558
 559     while (SDL_PollEvent(ev)) {
 560         switch (ev->type) {
 561         case SDL_VIDEOEXPOSE:
 562             sdl_update(ds, 0, 0, real_screen->w, real_screen->h);
 563             break;
 564         case SDL_KEYDOWN:
 565         case SDL_KEYUP:
 566             if (ev->type == SDL_KEYDOWN) {
 567                 if (alt_grab) {
 568                     mod_state = (SDL_GetModState() & (gui_grab_code | KMOD_LSHIFT)) ==
 569                                 (gui_grab_code | KMOD_LSHIFT);
 570                 } else if (ctrl_grab) {
 571                     mod_state = (SDL_GetModState() & KMOD_RCTRL) == KMOD_RCTRL;
 572                 } else {
 573                     mod_state = (SDL_GetModState() & gui_grab_code) ==
 574                                 gui_grab_code;
 575                 }
 576                 gui_key_modifier_pressed = mod_state;
 577                 if (gui_key_modifier_pressed) {
 578                     int keycode;
 579                     keycode = sdl_keyevent_to_keycode(&ev->key);
 580                     switch(keycode) {
 581                     case 0x21: /* 'f' key on US keyboard */
 582                         toggle_full_screen(ds);
 583                         gui_keysym = 1;
 584                         break;
 585                     case 0x16: /* 'u' key on US keyboard */
 586                         scaling_active = 0;
 587                         sdl_resize(ds);
 588                         vga_hw_invalidate();
 589                         vga_hw_update();
 590                         break;
 591                     case 0x02 ... 0x0a: /* '1' to '9' keys */
 592                         /* Reset the modifiers sent to the current console */
 593                         reset_keys();
 594                         console_select(keycode - 0x02);
 595                         if (!is_graphic_console()) {
 596                             /* display grab if going to a text console */
 597                             if (gui_grab)
 598                                 sdl_grab_end();
 599                         }
 600                         gui_keysym = 1;
 601                         break;
 602                     default:
 603                         break;
 604                     }
 605                 } else if (!is_graphic_console()) {
 606                     int keysym;
 607                     keysym = 0;
 608                     if (ev->key.keysym.mod & (KMOD_LCTRL | KMOD_RCTRL)) {
 609                         switch(ev->key.keysym.sym) {
 610                         case SDLK_UP: keysym = QEMU_KEY_CTRL_UP; break;
 611                         case SDLK_DOWN: keysym = QEMU_KEY_CTRL_DOWN; break;
 612                         case SDLK_LEFT: keysym = QEMU_KEY_CTRL_LEFT; break;
 613                         case SDLK_RIGHT: keysym = QEMU_KEY_CTRL_RIGHT; break;
 614                         case SDLK_HOME: keysym = QEMU_KEY_CTRL_HOME; break;
 615                         case SDLK_END: keysym = QEMU_KEY_CTRL_END; break;
 616                         case SDLK_PAGEUP: keysym = QEMU_KEY_CTRL_PAGEUP; break;
 617                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_CTRL_PAGEDOWN; break;
 618                         default: break;
 619                         }
 620                     } else {
 621                         switch(ev->key.keysym.sym) {
 622                         case SDLK_UP: keysym = QEMU_KEY_UP; break;
 623                         case SDLK_DOWN: keysym = QEMU_KEY_DOWN; break;
 624                         case SDLK_LEFT: keysym = QEMU_KEY_LEFT; break;
 625                         case SDLK_RIGHT: keysym = QEMU_KEY_RIGHT; break;
 626                         case SDLK_HOME: keysym = QEMU_KEY_HOME; break;
 627                         case SDLK_END: keysym = QEMU_KEY_END; break;
 628                         case SDLK_PAGEUP: keysym = QEMU_KEY_PAGEUP; break;
 629                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_PAGEDOWN; break;
 630                         case SDLK_BACKSPACE: keysym = QEMU_KEY_BACKSPACE; break;
 631                         case SDLK_DELETE: keysym = QEMU_KEY_DELETE; break;
 632                         default: break;
 633                         }
 634                     }
 635                     if (keysym) {
 636                         kbd_put_keysym(keysym);
 637                     } else if (ev->key.keysym.unicode != 0) {
 638                         kbd_put_keysym(ev->key.keysym.unicode);
 639                     }
 640                 }
 641             } else if (ev->type == SDL_KEYUP) {
 642                 if (!alt_grab) {
 643                     mod_state = (ev->key.keysym.mod & gui_grab_code);
 644                 } else {
 645                     mod_state = (ev->key.keysym.mod &
 646                                  (gui_grab_code | KMOD_LSHIFT));
 647                 }
 648                 if (!mod_state) {
 649                     if (gui_key_modifier_pressed) {
 650                         gui_key_modifier_pressed = 0;
 651                         if (gui_keysym == 0) {
 652                             /* exit/enter grab if pressing Ctrl-Alt */
 653                             if (!gui_grab) {
 654                                 /* if the application is not active,
 655                                    do not try to enter grab state. It
 656                                    prevents
 657                                    'SDL_WM_GrabInput(SDL_GRAB_ON)'
 658                                    from blocking all the application
 659                                    (SDL bug). */
 660                                 if (SDL_GetAppState() & SDL_APPACTIVE)
 661                                     sdl_grab_start();
 662                             } else {
 663                                 sdl_grab_end();
 664                             }
 665                             /* SDL does not send back all the
 666                                modifiers key, so we must correct it */
 667                             reset_keys();
 668                             break;
 669                         }
 670                         gui_keysym = 0;
 671                     }
 672                 }
 673             }
 674             if (is_graphic_console() && !gui_keysym)
 675                 sdl_process_key(&ev->key);
 676             break;
 677         case SDL_QUIT:
 678             if (!no_quit) {
 679                 no_shutdown = 0;
 680                 qemu_system_shutdown_request();
 681             }
 682             break;
 683         case SDL_MOUSEMOTION:
 684             if (gui_grab || kbd_mouse_is_absolute() ||
 685                 absolute_enabled) {
 686                 sdl_send_mouse_event(ev->motion.xrel, ev->motion.yrel, 0,
 687                        ev->motion.x, ev->motion.y, ev->motion.state);
 688             }
 689             break;
 690         case SDL_MOUSEBUTTONDOWN:
 691         case SDL_MOUSEBUTTONUP:
 692             {
 693                 SDL_MouseButtonEvent *bev = &ev->button;
 694                 if (!gui_grab && !kbd_mouse_is_absolute()) {
 695                     if (ev->type == SDL_MOUSEBUTTONDOWN &&
 696                         (bev->button == SDL_BUTTON_LEFT)) {
 697                         /* start grabbing all events */
 698                         sdl_grab_start();
 699                     }
 700                 } else {
 701                     int dz;
 702                     dz = 0;
 703                     if (ev->type == SDL_MOUSEBUTTONDOWN) {
 704                         buttonstate |= SDL_BUTTON(bev->button);
 705                     } else {
 706                         buttonstate &= ~SDL_BUTTON(bev->button);
 707                     }
 708 #ifdef SDL_BUTTON_WHEELUP
 709                     if (bev->button == SDL_BUTTON_WHEELUP && ev->type == SDL_MOUSEBUTTONDOWN) {
 710                         dz = -1;
 711                     } else if (bev->button == SDL_BUTTON_WHEELDOWN && ev->type == SDL_MOUSEBUTTONDOWN) {
 712                         dz = 1;
 713                     }
 714 #endif
 715                     sdl_send_mouse_event(0, 0, dz, bev->x, bev->y, buttonstate);
 716                 }
 717             }
 718             break;
 719         case SDL_ACTIVEEVENT:
 720             if (gui_grab && ev->active.state == SDL_APPINPUTFOCUS &&
 721                 !ev->active.gain && !gui_fullscreen_initial_grab) {
 722                 sdl_grab_end();
 723             }
 724             if (ev->active.state & SDL_APPACTIVE) {
 725                 if (ev->active.gain) {
 726                     /* Back to default interval */
 727                     dcl->gui_timer_interval = 0;
 728                     dcl->idle = 0;
 729                 } else {
 730                     /* Sleeping interval */
 731                     dcl->gui_timer_interval = 500;
 732                     dcl->idle = 1;
 733                 }
 734             }
 735             break;
 736         case SDL_VIDEORESIZE:
 737         {
 738             SDL_ResizeEvent *rev = &ev->resize;
 739             int bpp = real_screen->format->BitsPerPixel;
 740             if (bpp != 16 && bpp != 32)
 741                 bpp = 32;
 742             do_sdl_resize(rev->w, rev->h, bpp);
 743             scaling_active = 1;
 744             if (!is_buffer_shared(ds->surface)) {
 745                 ds->surface = qemu_resize_displaysurface(ds, ds_get_width(ds), ds_get_height(ds));
 746                 dpy_resize(ds);
 747             }
 748             vga_hw_invalidate();
 749             vga_hw_update();
 750             break;
 751         }
 752         default:
 753             break;
 754         }
 755     }
 756 }
 757
 758 static void sdl_fill(DisplayState *ds, int x, int y, int w, int h, uint32_t c)
 759 {
 760     SDL_Rect dst = { x, y, w, h };
 761     SDL_FillRect(real_screen, &dst, c);
 762 }
 763
 764 static void sdl_mouse_warp(int x, int y, int on)
 765 {
 766     if (on) {
 767         if (!guest_cursor)
 768             sdl_show_cursor();
 769         if (gui_grab || kbd_mouse_is_absolute() || absolute_enabled) {
 770             SDL_SetCursor(guest_sprite);
 771             if (!kbd_mouse_is_absolute() && !absolute_enabled)
 772                 SDL_WarpMouse(x, y);
 773         }
 774     } else if (gui_grab)
 775         sdl_hide_cursor();
 776     guest_cursor = on;
 777     guest_x = x, guest_y = y;
 778 }
 779
 780 static void sdl_mouse_define(QEMUCursor *c)
 781 {
 782     uint8_t *image, *mask;
 783     int bpl;
 784
 785     if (guest_sprite)
 786         SDL_FreeCursor(guest_sprite);
 787
 788     bpl = cursor_get_mono_bpl(c);
 789     image = qemu_mallocz(bpl * c->height);
 790     mask  = qemu_mallocz(bpl * c->height);
 791     cursor_get_mono_image(c, 0x000000, image);
 792     cursor_get_mono_mask(c, 0, mask);
 793     guest_sprite = SDL_CreateCursor(image, mask, c->width, c->height,
 794                                     c->hot_x, c->hot_y);
 795     qemu_free(image);
 796     qemu_free(mask);
 797
 798     if (guest_cursor &&
 799             (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
 800         SDL_SetCursor(guest_sprite);
 801 }
 802
 803 static void sdl_cleanup(void)
 804 {
 805     if (guest_sprite)
 806         SDL_FreeCursor(guest_sprite);
 807     SDL_QuitSubSystem(SDL_INIT_VIDEO);
 808 }
 809
 810 void sdl_display_init(DisplayState *ds, int full_screen, int no_frame)
 811 {
 812     int flags;
 813     uint8_t data = 0;
 814     DisplayAllocator *da;
 815     const SDL_VideoInfo *vi;
 816     char *filename;
 817
 818 #if defined(__APPLE__)
 819     /* always use generic keymaps */
 820     if (!keyboard_layout)
 821         keyboard_layout = "en-us";
 822 #endif
 823     if(keyboard_layout) {
 824         kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
 825         if (!kbd_layout)
 826             exit(1);
 827     }
 828
 829     if (no_frame)
 830         gui_noframe = 1;
 831
 832     if (!full_screen) {
 833         setenv("SDL_VIDEO_ALLOW_SCREENSAVER", "1", 0);
 834     }
 835 #ifdef __linux__
 836     /* on Linux, SDL may use fbcon|directfb|svgalib when run without
 837      * accessible $DISPLAY to open X11 window.  This is often the case
 838      * when qemu is run using sudo.  But in this case, and when actually
 839      * run in X11 environment, SDL fights with X11 for the video card,
 840      * making current display unavailable, often until reboot.
 841      * So make x11 the default SDL video driver if this variable is unset.
 842      * This is a bit hackish but saves us from bigger problem.
 843      * Maybe it's a good idea to fix this in SDL instead.
 844      */
 845     setenv("SDL_VIDEODRIVER", "x11", 0);
 846 #endif
 847
 848     /* Enable normal up/down events for Caps-Lock and Num-Lock keys.
 849      * This requires SDL >= 1.2.14. */
 850     setenv("SDL_DISABLE_LOCK_KEYS", "1", 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     /* Load a 32x32x4 image. White pixels are transparent. */
 862     filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, "qemu-icon.bmp");
 863     if (filename) {
 864         SDL_Surface *image = SDL_LoadBMP(filename);
 865         if (image) {
 866             uint32_t colorkey = SDL_MapRGB(image->format, 255, 255, 255);
 867             SDL_SetColorKey(image, SDL_SRCCOLORKEY, colorkey);
 868             SDL_WM_SetIcon(image, NULL);
 869         }
 870         qemu_free(filename);
 871     }
 872
 873     dcl = qemu_mallocz(sizeof(DisplayChangeListener));
 874     dcl->dpy_update = sdl_update;
 875     dcl->dpy_resize = sdl_resize;
 876     dcl->dpy_refresh = sdl_refresh;
 877     dcl->dpy_setdata = sdl_setdata;
 878     dcl->dpy_fill = sdl_fill;
 879     ds->mouse_set = sdl_mouse_warp;
 880     ds->cursor_define = sdl_mouse_define;
 881     register_displaychangelistener(ds, dcl);
 882
 883     da = qemu_mallocz(sizeof(DisplayAllocator));
 884     da->create_displaysurface = sdl_create_displaysurface;
 885     da->resize_displaysurface = sdl_resize_displaysurface;
 886     da->free_displaysurface = sdl_free_displaysurface;
 887     if (register_displayallocator(ds, da) == da) {
 888         dpy_resize(ds);
 889     }
 890
 891     mouse_mode_notifier.notify = sdl_mouse_mode_change;
 892     qemu_add_mouse_mode_change_notifier(&mouse_mode_notifier);
 893
 894     sdl_update_caption();
 895     SDL_EnableKeyRepeat(250, 50);
 896     gui_grab = 0;
 897
 898     sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
 899     sdl_cursor_normal = SDL_GetCursor();
 900
 901     atexit(sdl_cleanup);
 902     if (full_screen) {
 903         gui_fullscreen = 1;
 904         gui_fullscreen_initial_grab = 1;
 905         sdl_grab_start();
 906     }
 907 }