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|SDL_RESIZABLE;
 101     if (gui_fullscreen)
 102         flags |= SDL_FULLSCREEN;
 103     if (gui_noframe)
 104         flags |= SDL_NOFRAME;
 105
 106     width = new_width;
 107     height = new_height;
 108     real_screen = SDL_SetVideoMode(width, height, bpp, flags);
 109     if (!real_screen) {
 110         fprintf(stderr, "Could not open SDL display (%dx%dx%d): %s\n", width,
 111                 height, bpp, SDL_GetError());
 112         exit(1);
 113     }
 114 }
 115
 116 static void sdl_resize(DisplayState *ds)
 117 {
 118     if  (!allocator) {
 119         if (!scaling_active)
 120             do_sdl_resize(ds_get_width(ds), ds_get_height(ds), 0);
 121         else if (real_screen->format->BitsPerPixel != ds_get_bits_per_pixel(ds))
 122             do_sdl_resize(real_screen->w, real_screen->h, ds_get_bits_per_pixel(ds));
 123         sdl_setdata(ds);
 124     } else {
 125         if (guest_screen != NULL) {
 126             SDL_FreeSurface(guest_screen);
 127             guest_screen = NULL;
 128         }
 129     }
 130 }
 131
 132 static PixelFormat sdl_to_qemu_pixelformat(SDL_PixelFormat *sdl_pf)
 133 {
 134     PixelFormat qemu_pf;
 135
 136     memset(&qemu_pf, 0x00, sizeof(PixelFormat));
 137
 138     qemu_pf.bits_per_pixel = sdl_pf->BitsPerPixel;
 139     qemu_pf.bytes_per_pixel = sdl_pf->BytesPerPixel;
 140     qemu_pf.depth = (qemu_pf.bits_per_pixel) == 32 ? 24 : (qemu_pf.bits_per_pixel);
 141
 142     qemu_pf.rmask = sdl_pf->Rmask;
 143     qemu_pf.gmask = sdl_pf->Gmask;
 144     qemu_pf.bmask = sdl_pf->Bmask;
 145     qemu_pf.amask = sdl_pf->Amask;
 146
 147     qemu_pf.rshift = sdl_pf->Rshift;
 148     qemu_pf.gshift = sdl_pf->Gshift;
 149     qemu_pf.bshift = sdl_pf->Bshift;
 150     qemu_pf.ashift = sdl_pf->Ashift;
 151
 152     qemu_pf.rbits = 8 - sdl_pf->Rloss;
 153     qemu_pf.gbits = 8 - sdl_pf->Gloss;
 154     qemu_pf.bbits = 8 - sdl_pf->Bloss;
 155     qemu_pf.abits = 8 - sdl_pf->Aloss;
 156
 157     qemu_pf.rmax = ((1 << qemu_pf.rbits) - 1);
 158     qemu_pf.gmax = ((1 << qemu_pf.gbits) - 1);
 159     qemu_pf.bmax = ((1 << qemu_pf.bbits) - 1);
 160     qemu_pf.amax = ((1 << qemu_pf.abits) - 1);
 161
 162     return qemu_pf;
 163 }
 164
 165 static DisplaySurface* sdl_create_displaysurface(int width, int height)
 166 {
 167     DisplaySurface *surface = (DisplaySurface*) qemu_mallocz(sizeof(DisplaySurface));
 168     if (surface == NULL) {
 169         fprintf(stderr, "sdl_create_displaysurface: malloc failed\n");
 170         exit(1);
 171     }
 172
 173     surface->width = width;
 174     surface->height = height;
 175
 176     if (scaling_active) {
 177         int linesize;
 178         PixelFormat pf;
 179         if (host_format.BytesPerPixel != 2 && host_format.BytesPerPixel != 4) {
 180             linesize = width * 4;
 181             pf = qemu_default_pixelformat(32);
 182         } else {
 183             linesize = width * host_format.BytesPerPixel;
 184             pf = sdl_to_qemu_pixelformat(&host_format);
 185         }
 186         qemu_alloc_display(surface, width, height, linesize, pf, 0);
 187         return surface;
 188     }
 189
 190     if (host_format.BitsPerPixel == 16)
 191         do_sdl_resize(width, height, 16);
 192     else
 193         do_sdl_resize(width, height, 32);
 194
 195     surface->pf = sdl_to_qemu_pixelformat(real_screen->format);
 196     surface->linesize = real_screen->pitch;
 197     surface->data = real_screen->pixels;
 198
 199 #ifdef HOST_WORDS_BIGENDIAN
 200     surface->flags = QEMU_REALPIXELS_FLAG | QEMU_BIG_ENDIAN_FLAG;
 201 #else
 202     surface->flags = QEMU_REALPIXELS_FLAG;
 203 #endif
 204     allocator = 1;
 205
 206     return surface;
 207 }
 208
 209 static void sdl_free_displaysurface(DisplaySurface *surface)
 210 {
 211     allocator = 0;
 212     if (surface == NULL)
 213         return;
 214
 215     if (surface->flags & QEMU_ALLOCATED_FLAG)
 216         qemu_free(surface->data);
 217     qemu_free(surface);
 218 }
 219
 220 static DisplaySurface* sdl_resize_displaysurface(DisplaySurface *surface, int width, int height)
 221 {
 222     sdl_free_displaysurface(surface);
 223     return sdl_create_displaysurface(width, height);
 224 }
 225
 226 /* generic keyboard conversion */
 227
 228 #include "sdl_keysym.h"
 229
 230 static kbd_layout_t *kbd_layout = NULL;
 231
 232 static uint8_t sdl_keyevent_to_keycode_generic(const SDL_KeyboardEvent *ev)
 233 {
 234     int keysym;
 235     /* workaround for X11+SDL bug with AltGR */
 236     keysym = ev->keysym.sym;
 237     if (keysym == 0 && ev->keysym.scancode == 113)
 238         keysym = SDLK_MODE;
 239     /* For Japanese key '\' and '|' */
 240     if (keysym == 92 && ev->keysym.scancode == 133) {
 241         keysym = 0xa5;
 242     }
 243     return keysym2scancode(kbd_layout, keysym) & SCANCODE_KEYMASK;
 244 }
 245
 246 /* specific keyboard conversions from scan codes */
 247
 248 #if defined(_WIN32)
 249
 250 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 251 {
 252     return ev->keysym.scancode;
 253 }
 254
 255 #else
 256
 257 #if defined(SDL_VIDEO_DRIVER_X11)
 258 #include <X11/XKBlib.h>
 259
 260 static int check_for_evdev(void)
 261 {
 262     SDL_SysWMinfo info;
 263     XkbDescPtr desc = NULL;
 264     int has_evdev = 0;
 265     char *keycodes = NULL;
 266
 267     SDL_VERSION(&info.version);
 268     if (!SDL_GetWMInfo(&info)) {
 269         return 0;
 270     }
 271     desc = XkbGetKeyboard(info.info.x11.display,
 272                           XkbGBN_AllComponentsMask,
 273                           XkbUseCoreKbd);
 274     if (desc && desc->names) {
 275         keycodes = XGetAtomName(info.info.x11.display, desc->names->keycodes);
 276         if (keycodes == NULL) {
 277             fprintf(stderr, "could not lookup keycode name\n");
 278         } else if (strstart(keycodes, "evdev", NULL)) {
 279             has_evdev = 1;
 280         } else if (!strstart(keycodes, "xfree86", NULL)) {
 281             fprintf(stderr, "unknown keycodes `%s', please report to "
 282                     "qemu-devel@nongnu.org\n", keycodes);
 283         }
 284     }
 285
 286     if (desc) {
 287         XkbFreeKeyboard(desc, XkbGBN_AllComponentsMask, True);
 288     }
 289     if (keycodes) {
 290         XFree(keycodes);
 291     }
 292     return has_evdev;
 293 }
 294 #else
 295 static int check_for_evdev(void)
 296 {
 297         return 0;
 298 }
 299 #endif
 300
 301 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 302 {
 303     int keycode;
 304     static int has_evdev = -1;
 305
 306     if (has_evdev == -1)
 307         has_evdev = check_for_evdev();
 308
 309     keycode = ev->keysym.scancode;
 310
 311     if (keycode < 9) {
 312         keycode = 0;
 313     } else if (keycode < 97) {
 314         keycode -= 8; /* just an offset */
 315     } else if (keycode < 158) {
 316         /* use conversion table */
 317         if (has_evdev)
 318             keycode = translate_evdev_keycode(keycode - 97);
 319         else
 320             keycode = translate_xfree86_keycode(keycode - 97);
 321     } else if (keycode == 208) { /* Hiragana_Katakana */
 322         keycode = 0x70;
 323     } else if (keycode == 211) { /* backslash */
 324         keycode = 0x73;
 325     } else {
 326         keycode = 0;
 327     }
 328     return keycode;
 329 }
 330
 331 #endif
 332
 333 static void reset_keys(void)
 334 {
 335     int i;
 336     for(i = 0; i < 256; i++) {
 337         if (modifiers_state[i]) {
 338             if (i & SCANCODE_GREY)
 339                 kbd_put_keycode(SCANCODE_EMUL0);
 340             kbd_put_keycode(i | SCANCODE_UP);
 341             modifiers_state[i] = 0;
 342         }
 343     }
 344 }
 345
 346 static void sdl_process_key(SDL_KeyboardEvent *ev)
 347 {
 348     int keycode, v;
 349
 350     if (ev->keysym.sym == SDLK_PAUSE) {
 351         /* specific case */
 352         v = 0;
 353         if (ev->type == SDL_KEYUP)
 354             v |= SCANCODE_UP;
 355         kbd_put_keycode(0xe1);
 356         kbd_put_keycode(0x1d | v);
 357         kbd_put_keycode(0x45 | v);
 358         return;
 359     }
 360
 361     if (kbd_layout) {
 362         keycode = sdl_keyevent_to_keycode_generic(ev);
 363     } else {
 364         keycode = sdl_keyevent_to_keycode(ev);
 365     }
 366
 367     switch(keycode) {
 368     case 0x00:
 369         /* sent when leaving window: reset the modifiers state */
 370         reset_keys();
 371         return;
 372     case 0x2a:                          /* Left Shift */
 373     case 0x36:                          /* Right Shift */
 374     case 0x1d:                          /* Left CTRL */
 375     case 0x9d:                          /* Right CTRL */
 376     case 0x38:                          /* Left ALT */
 377     case 0xb8:                         /* Right ALT */
 378         if (ev->type == SDL_KEYUP)
 379             modifiers_state[keycode] = 0;
 380         else
 381             modifiers_state[keycode] = 1;
 382         break;
 383 #define QEMU_SDL_VERSION ((SDL_MAJOR_VERSION << 8) + SDL_MINOR_VERSION)
 384 #if QEMU_SDL_VERSION < 0x102 || QEMU_SDL_VERSION == 0x102 && SDL_PATCHLEVEL < 14
 385         /* SDL versions before 1.2.14 don't support key up for caps/num lock. */
 386     case 0x45: /* num lock */
 387     case 0x3a: /* caps lock */
 388         /* SDL does not send the key up event, so we generate it */
 389         kbd_put_keycode(keycode);
 390         kbd_put_keycode(keycode | SCANCODE_UP);
 391         return;
 392 #endif
 393     }
 394
 395     /* now send the key code */
 396     if (keycode & SCANCODE_GREY)
 397         kbd_put_keycode(SCANCODE_EMUL0);
 398     if (ev->type == SDL_KEYUP)
 399         kbd_put_keycode(keycode | SCANCODE_UP);
 400     else
 401         kbd_put_keycode(keycode & SCANCODE_KEYCODEMASK);
 402 }
 403
 404 static void sdl_update_caption(void)
 405 {
 406     char win_title[1024];
 407     char icon_title[1024];
 408     const char *status = "";
 409
 410     if (!vm_running)
 411         status = " [Stopped]";
 412     else if (gui_grab) {
 413         if (alt_grab)
 414             status = " - Press Ctrl-Alt-Shift to exit mouse grab";
 415         else if (ctrl_grab)
 416             status = " - Press Right-Ctrl to exit mouse grab";
 417         else
 418             status = " - Press Ctrl-Alt to exit mouse grab";
 419     }
 420
 421     if (qemu_name) {
 422         snprintf(win_title, sizeof(win_title), "QEMU (%s)%s", qemu_name, status);
 423         snprintf(icon_title, sizeof(icon_title), "QEMU (%s)", qemu_name);
 424     } else {
 425         snprintf(win_title, sizeof(win_title), "QEMU%s", status);
 426         snprintf(icon_title, sizeof(icon_title), "QEMU");
 427     }
 428
 429     SDL_WM_SetCaption(win_title, icon_title);
 430 }
 431
 432 static void sdl_hide_cursor(void)
 433 {
 434     if (!cursor_hide)
 435         return;
 436
 437     if (kbd_mouse_is_absolute()) {
 438         SDL_ShowCursor(1);
 439         SDL_SetCursor(sdl_cursor_hidden);
 440     } else {
 441         SDL_ShowCursor(0);
 442     }
 443 }
 444
 445 static void sdl_show_cursor(void)
 446 {
 447     if (!cursor_hide)
 448         return;
 449
 450     if (!kbd_mouse_is_absolute()) {
 451         SDL_ShowCursor(1);
 452         if (guest_cursor &&
 453                 (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
 454             SDL_SetCursor(guest_sprite);
 455         else
 456             SDL_SetCursor(sdl_cursor_normal);
 457     }
 458 }
 459
 460 static void sdl_grab_start(void)
 461 {
 462     if (guest_cursor) {
 463         SDL_SetCursor(guest_sprite);
 464         if (!kbd_mouse_is_absolute() && !absolute_enabled)
 465             SDL_WarpMouse(guest_x, guest_y);
 466     } else
 467         sdl_hide_cursor();
 468
 469     if (SDL_WM_GrabInput(SDL_GRAB_ON) == SDL_GRAB_ON) {
 470         gui_grab = 1;
 471         sdl_update_caption();
 472     } else
 473         sdl_show_cursor();
 474 }
 475
 476 static void sdl_grab_end(void)
 477 {
 478     SDL_WM_GrabInput(SDL_GRAB_OFF);
 479     gui_grab = 0;
 480     sdl_show_cursor();
 481     sdl_update_caption();
 482 }
 483
 484 static void sdl_mouse_mode_change(Notifier *notify, void *data)
 485 {
 486     if (kbd_mouse_is_absolute()) {
 487         if (!absolute_enabled) {
 488             sdl_hide_cursor();
 489             if (gui_grab) {
 490                 sdl_grab_end();
 491             }
 492             absolute_enabled = 1;
 493         }
 494     } else if (absolute_enabled) {
 495         sdl_show_cursor();
 496         absolute_enabled = 0;
 497     }
 498 }
 499
 500 static void sdl_send_mouse_event(int dx, int dy, int dz, int x, int y, int state)
 501 {
 502     int buttons;
 503     buttons = 0;
 504     if (state & SDL_BUTTON(SDL_BUTTON_LEFT))
 505         buttons |= MOUSE_EVENT_LBUTTON;
 506     if (state & SDL_BUTTON(SDL_BUTTON_RIGHT))
 507         buttons |= MOUSE_EVENT_RBUTTON;
 508     if (state & SDL_BUTTON(SDL_BUTTON_MIDDLE))
 509         buttons |= MOUSE_EVENT_MBUTTON;
 510
 511     if (kbd_mouse_is_absolute()) {
 512        dx = x * 0x7FFF / (width - 1);
 513        dy = y * 0x7FFF / (height - 1);
 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(QEMUCursor *c)
 776 {
 777     uint8_t *image, *mask;
 778     int bpl;
 779
 780     if (guest_sprite)
 781         SDL_FreeCursor(guest_sprite);
 782
 783     bpl = cursor_get_mono_bpl(c);
 784     image = qemu_mallocz(bpl * c->height);
 785     mask  = qemu_mallocz(bpl * c->height);
 786     cursor_get_mono_image(c, 0x000000, image);
 787     cursor_get_mono_mask(c, 0, mask);
 788     guest_sprite = SDL_CreateCursor(image, mask, c->width, c->height,
 789                                     c->hot_x, c->hot_y);
 790     qemu_free(image);
 791     qemu_free(mask);
 792
 793     if (guest_cursor &&
 794             (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
 795         SDL_SetCursor(guest_sprite);
 796 }
 797
 798 static void sdl_cleanup(void)
 799 {
 800     if (guest_sprite)
 801         SDL_FreeCursor(guest_sprite);
 802     SDL_QuitSubSystem(SDL_INIT_VIDEO);
 803 }
 804
 805 void sdl_display_init(DisplayState *ds, int full_screen, int no_frame)
 806 {
 807     int flags;
 808     uint8_t data = 0;
 809     DisplayAllocator *da;
 810     const SDL_VideoInfo *vi;
 811     char *filename;
 812
 813 #if defined(__APPLE__)
 814     /* always use generic keymaps */
 815     if (!keyboard_layout)
 816         keyboard_layout = "en-us";
 817 #endif
 818     if(keyboard_layout) {
 819         kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
 820         if (!kbd_layout)
 821             exit(1);
 822     }
 823
 824     if (no_frame)
 825         gui_noframe = 1;
 826
 827     if (!full_screen) {
 828         setenv("SDL_VIDEO_ALLOW_SCREENSAVER", "1", 0);
 829     }
 830 #ifdef __linux__
 831     /* on Linux, SDL may use fbcon|directfb|svgalib when run without
 832      * accessible $DISPLAY to open X11 window.  This is often the case
 833      * when qemu is run using sudo.  But in this case, and when actually
 834      * run in X11 environment, SDL fights with X11 for the video card,
 835      * making current display unavailable, often until reboot.
 836      * So make x11 the default SDL video driver if this variable is unset.
 837      * This is a bit hackish but saves us from bigger problem.
 838      * Maybe it's a good idea to fix this in SDL instead.
 839      */
 840     setenv("SDL_VIDEODRIVER", "x11", 0);
 841 #endif
 842
 843     /* Enable normal up/down events for Caps-Lock and Num-Lock keys.
 844      * This requires SDL >= 1.2.14. */
 845     setenv("SDL_DISABLE_LOCK_KEYS", "1", 1);
 846
 847     flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
 848     if (SDL_Init (flags)) {
 849         fprintf(stderr, "Could not initialize SDL(%s) - exiting\n",
 850                 SDL_GetError());
 851         exit(1);
 852     }
 853     vi = SDL_GetVideoInfo();
 854     host_format = *(vi->vfmt);
 855
 856     /* Load a 32x32x4 image. White pixels are transparent. */
 857     filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, "qemu-icon.bmp");
 858     if (filename) {
 859         SDL_Surface *image = SDL_LoadBMP(filename);
 860         if (image) {
 861             uint32_t colorkey = SDL_MapRGB(image->format, 255, 255, 255);
 862             SDL_SetColorKey(image, SDL_SRCCOLORKEY, colorkey);
 863             SDL_WM_SetIcon(image, NULL);
 864         }
 865         qemu_free(filename);
 866     }
 867
 868     dcl = qemu_mallocz(sizeof(DisplayChangeListener));
 869     dcl->dpy_update = sdl_update;
 870     dcl->dpy_resize = sdl_resize;
 871     dcl->dpy_refresh = sdl_refresh;
 872     dcl->dpy_setdata = sdl_setdata;
 873     dcl->dpy_fill = sdl_fill;
 874     ds->mouse_set = sdl_mouse_warp;
 875     ds->cursor_define = sdl_mouse_define;
 876     register_displaychangelistener(ds, dcl);
 877
 878     da = qemu_mallocz(sizeof(DisplayAllocator));
 879     da->create_displaysurface = sdl_create_displaysurface;
 880     da->resize_displaysurface = sdl_resize_displaysurface;
 881     da->free_displaysurface = sdl_free_displaysurface;
 882     if (register_displayallocator(ds, da) == da) {
 883         dpy_resize(ds);
 884     }
 885
 886     mouse_mode_notifier.notify = sdl_mouse_mode_change;
 887     qemu_add_mouse_mode_change_notifier(&mouse_mode_notifier);
 888
 889     sdl_update_caption();
 890     SDL_EnableKeyRepeat(250, 50);
 891     gui_grab = 0;
 892
 893     sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
 894     sdl_cursor_normal = SDL_GetCursor();
 895
 896     atexit(sdl_cleanup);
 897     if (full_screen) {
 898         gui_fullscreen = 1;
 899         gui_fullscreen_initial_grab = 1;
 900         sdl_grab_start();
 901     }
 902 }