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 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     SDL_Rect rec;
  87     rec.x = 0;
  88     rec.y = 0;
  89     rec.w = real_screen->w;
  90     rec.h = real_screen->h;
  91
  92     if (guest_screen != NULL) SDL_FreeSurface(guest_screen);
  93
  94     guest_screen = SDL_CreateRGBSurfaceFrom(ds_get_data(ds), ds_get_width(ds), ds_get_height(ds),
  95                                             ds_get_bits_per_pixel(ds), ds_get_linesize(ds),
  96                                             ds->surface->pf.rmask, ds->surface->pf.gmask,
  97                                             ds->surface->pf.bmask, ds->surface->pf.amask);
  98 }
  99
 100 static void do_sdl_resize(int new_width, int new_height, int bpp)
 101 {
 102     int flags;
 103
 104     //    printf("resizing to %d %d\n", w, h);
 105
 106     flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL|SDL_RESIZABLE;
 107     if (gui_fullscreen)
 108         flags |= SDL_FULLSCREEN;
 109     if (gui_noframe)
 110         flags |= SDL_NOFRAME;
 111
 112     width = new_width;
 113     height = new_height;
 114     real_screen = SDL_SetVideoMode(width, height, bpp, flags);
 115     if (!real_screen) {
 116         fprintf(stderr, "Could not open SDL display (%dx%dx%d): %s\n", width,
 117                 height, bpp, SDL_GetError());
 118         exit(1);
 119     }
 120 }
 121
 122 static void sdl_resize(DisplayState *ds)
 123 {
 124     if  (!allocator) {
 125         if (!scaling_active)
 126             do_sdl_resize(ds_get_width(ds), ds_get_height(ds), 0);
 127         else if (real_screen->format->BitsPerPixel != ds_get_bits_per_pixel(ds))
 128             do_sdl_resize(real_screen->w, real_screen->h, ds_get_bits_per_pixel(ds));
 129         sdl_setdata(ds);
 130     } else {
 131         if (guest_screen != NULL) {
 132             SDL_FreeSurface(guest_screen);
 133             guest_screen = NULL;
 134         }
 135     }
 136 }
 137
 138 static PixelFormat sdl_to_qemu_pixelformat(SDL_PixelFormat *sdl_pf)
 139 {
 140     PixelFormat qemu_pf;
 141
 142     memset(&qemu_pf, 0x00, sizeof(PixelFormat));
 143
 144     qemu_pf.bits_per_pixel = sdl_pf->BitsPerPixel;
 145     qemu_pf.bytes_per_pixel = sdl_pf->BytesPerPixel;
 146     qemu_pf.depth = (qemu_pf.bits_per_pixel) == 32 ? 24 : (qemu_pf.bits_per_pixel);
 147
 148     qemu_pf.rmask = sdl_pf->Rmask;
 149     qemu_pf.gmask = sdl_pf->Gmask;
 150     qemu_pf.bmask = sdl_pf->Bmask;
 151     qemu_pf.amask = sdl_pf->Amask;
 152
 153     qemu_pf.rshift = sdl_pf->Rshift;
 154     qemu_pf.gshift = sdl_pf->Gshift;
 155     qemu_pf.bshift = sdl_pf->Bshift;
 156     qemu_pf.ashift = sdl_pf->Ashift;
 157
 158     qemu_pf.rbits = 8 - sdl_pf->Rloss;
 159     qemu_pf.gbits = 8 - sdl_pf->Gloss;
 160     qemu_pf.bbits = 8 - sdl_pf->Bloss;
 161     qemu_pf.abits = 8 - sdl_pf->Aloss;
 162
 163     qemu_pf.rmax = ((1 << qemu_pf.rbits) - 1);
 164     qemu_pf.gmax = ((1 << qemu_pf.gbits) - 1);
 165     qemu_pf.bmax = ((1 << qemu_pf.bbits) - 1);
 166     qemu_pf.amax = ((1 << qemu_pf.abits) - 1);
 167
 168     return qemu_pf;
 169 }
 170
 171 static DisplaySurface* sdl_create_displaysurface(int width, int height)
 172 {
 173     DisplaySurface *surface = (DisplaySurface*) qemu_mallocz(sizeof(DisplaySurface));
 174     if (surface == NULL) {
 175         fprintf(stderr, "sdl_create_displaysurface: malloc failed\n");
 176         exit(1);
 177     }
 178
 179     surface->width = width;
 180     surface->height = height;
 181
 182     if (scaling_active) {
 183         if (host_format.BytesPerPixel != 2 && host_format.BytesPerPixel != 4) {
 184             surface->linesize = width * 4;
 185             surface->pf = qemu_default_pixelformat(32);
 186         } else {
 187             surface->linesize = width * host_format.BytesPerPixel;
 188             surface->pf = sdl_to_qemu_pixelformat(&host_format);
 189         }
 190 #ifdef HOST_WORDS_BIGENDIAN
 191         surface->flags = QEMU_ALLOCATED_FLAG | QEMU_BIG_ENDIAN_FLAG;
 192 #else
 193         surface->flags = QEMU_ALLOCATED_FLAG;
 194 #endif
 195         surface->data = (uint8_t*) qemu_mallocz(surface->linesize * surface->height);
 196
 197         return surface;
 198     }
 199
 200     if (host_format.BitsPerPixel == 16)
 201         do_sdl_resize(width, height, 16);
 202     else
 203         do_sdl_resize(width, height, 32);
 204
 205     surface->pf = sdl_to_qemu_pixelformat(real_screen->format);
 206     surface->linesize = real_screen->pitch;
 207     surface->data = real_screen->pixels;
 208
 209 #ifdef HOST_WORDS_BIGENDIAN
 210     surface->flags = QEMU_REALPIXELS_FLAG | QEMU_BIG_ENDIAN_FLAG;
 211 #else
 212     surface->flags = QEMU_REALPIXELS_FLAG;
 213 #endif
 214     allocator = 1;
 215
 216     return surface;
 217 }
 218
 219 static void sdl_free_displaysurface(DisplaySurface *surface)
 220 {
 221     allocator = 0;
 222     if (surface == NULL)
 223         return;
 224
 225     if (surface->flags & QEMU_ALLOCATED_FLAG)
 226         qemu_free(surface->data);
 227     qemu_free(surface);
 228 }
 229
 230 static DisplaySurface* sdl_resize_displaysurface(DisplaySurface *surface, int width, int height)
 231 {
 232     sdl_free_displaysurface(surface);
 233     return sdl_create_displaysurface(width, height);
 234 }
 235
 236 /* generic keyboard conversion */
 237
 238 #include "sdl_keysym.h"
 239
 240 static kbd_layout_t *kbd_layout = NULL;
 241
 242 static uint8_t sdl_keyevent_to_keycode_generic(const SDL_KeyboardEvent *ev)
 243 {
 244     int keysym;
 245     /* workaround for X11+SDL bug with AltGR */
 246     keysym = ev->keysym.sym;
 247     if (keysym == 0 && ev->keysym.scancode == 113)
 248         keysym = SDLK_MODE;
 249     /* For Japanese key '\' and '|' */
 250     if (keysym == 92 && ev->keysym.scancode == 133) {
 251         keysym = 0xa5;
 252     }
 253     return keysym2scancode(kbd_layout, keysym) & SCANCODE_KEYMASK;
 254 }
 255
 256 /* specific keyboard conversions from scan codes */
 257
 258 #if defined(_WIN32)
 259
 260 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 261 {
 262     return ev->keysym.scancode;
 263 }
 264
 265 #else
 266
 267 #if defined(SDL_VIDEO_DRIVER_X11)
 268 #include <X11/XKBlib.h>
 269
 270 static int check_for_evdev(void)
 271 {
 272     SDL_SysWMinfo info;
 273     XkbDescPtr desc = NULL;
 274     int has_evdev = 0;
 275     char *keycodes = NULL;
 276
 277     SDL_VERSION(&info.version);
 278     if (!SDL_GetWMInfo(&info)) {
 279         return 0;
 280     }
 281     desc = XkbGetKeyboard(info.info.x11.display,
 282                           XkbGBN_AllComponentsMask,
 283                           XkbUseCoreKbd);
 284     if (desc && desc->names) {
 285         keycodes = XGetAtomName(info.info.x11.display, desc->names->keycodes);
 286         if (keycodes == NULL) {
 287             fprintf(stderr, "could not lookup keycode name\n");
 288         } else if (strstart(keycodes, "evdev", NULL)) {
 289             has_evdev = 1;
 290         } else if (!strstart(keycodes, "xfree86", NULL)) {
 291             fprintf(stderr, "unknown keycodes `%s', please report to "
 292                     "qemu-devel@nongnu.org\n", keycodes);
 293         }
 294     }
 295
 296     if (desc) {
 297         XkbFreeKeyboard(desc, XkbGBN_AllComponentsMask, True);
 298     }
 299     if (keycodes) {
 300         XFree(keycodes);
 301     }
 302     return has_evdev;
 303 }
 304 #else
 305 static int check_for_evdev(void)
 306 {
 307         return 0;
 308 }
 309 #endif
 310
 311 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 312 {
 313     int keycode;
 314     static int has_evdev = -1;
 315
 316     if (has_evdev == -1)
 317         has_evdev = check_for_evdev();
 318
 319     keycode = ev->keysym.scancode;
 320
 321     if (keycode < 9) {
 322         keycode = 0;
 323     } else if (keycode < 97) {
 324         keycode -= 8; /* just an offset */
 325     } else if (keycode < 158) {
 326         /* use conversion table */
 327         if (has_evdev)
 328             keycode = translate_evdev_keycode(keycode - 97);
 329         else
 330             keycode = translate_xfree86_keycode(keycode - 97);
 331     } else if (keycode == 208) { /* Hiragana_Katakana */
 332         keycode = 0x70;
 333     } else if (keycode == 211) { /* backslash */
 334         keycode = 0x73;
 335     } else {
 336         keycode = 0;
 337     }
 338     return keycode;
 339 }
 340
 341 #endif
 342
 343 static void reset_keys(void)
 344 {
 345     int i;
 346     for(i = 0; i < 256; i++) {
 347         if (modifiers_state[i]) {
 348             if (i & SCANCODE_GREY)
 349                 kbd_put_keycode(SCANCODE_EMUL0);
 350             kbd_put_keycode(i | SCANCODE_UP);
 351             modifiers_state[i] = 0;
 352         }
 353     }
 354 }
 355
 356 static void sdl_process_key(SDL_KeyboardEvent *ev)
 357 {
 358     int keycode, v;
 359
 360     if (ev->keysym.sym == SDLK_PAUSE) {
 361         /* specific case */
 362         v = 0;
 363         if (ev->type == SDL_KEYUP)
 364             v |= SCANCODE_UP;
 365         kbd_put_keycode(0xe1);
 366         kbd_put_keycode(0x1d | v);
 367         kbd_put_keycode(0x45 | v);
 368         return;
 369     }
 370
 371     if (kbd_layout) {
 372         keycode = sdl_keyevent_to_keycode_generic(ev);
 373     } else {
 374         keycode = sdl_keyevent_to_keycode(ev);
 375     }
 376
 377     switch(keycode) {
 378     case 0x00:
 379         /* sent when leaving window: reset the modifiers state */
 380         reset_keys();
 381         return;
 382     case 0x2a:                          /* Left Shift */
 383     case 0x36:                          /* Right Shift */
 384     case 0x1d:                          /* Left CTRL */
 385     case 0x9d:                          /* Right CTRL */
 386     case 0x38:                          /* Left ALT */
 387     case 0xb8:                         /* Right ALT */
 388         if (ev->type == SDL_KEYUP)
 389             modifiers_state[keycode] = 0;
 390         else
 391             modifiers_state[keycode] = 1;
 392         break;
 393     case 0x45: /* num lock */
 394     case 0x3a: /* caps lock */
 395         /* SDL does not send the key up event, so we generate it */
 396         kbd_put_keycode(keycode);
 397         kbd_put_keycode(keycode | SCANCODE_UP);
 398         return;
 399     }
 400
 401     /* now send the key code */
 402     if (keycode & SCANCODE_GREY)
 403         kbd_put_keycode(SCANCODE_EMUL0);
 404     if (ev->type == SDL_KEYUP)
 405         kbd_put_keycode(keycode | SCANCODE_UP);
 406     else
 407         kbd_put_keycode(keycode & SCANCODE_KEYCODEMASK);
 408 }
 409
 410 static void sdl_update_caption(void)
 411 {
 412     char win_title[1024];
 413     char icon_title[1024];
 414     const char *status = "";
 415
 416     if (!vm_running)
 417         status = " [Stopped]";
 418     else if (gui_grab) {
 419         if (alt_grab)
 420             status = " - Press Ctrl-Alt-Shift to exit mouse grab";
 421         else if (ctrl_grab)
 422             status = " - Press Right-Ctrl to exit mouse grab";
 423         else
 424             status = " - Press Ctrl-Alt to exit mouse grab";
 425     }
 426
 427     if (qemu_name) {
 428         snprintf(win_title, sizeof(win_title), "QEMU (%s)%s", qemu_name, status);
 429         snprintf(icon_title, sizeof(icon_title), "QEMU (%s)", qemu_name);
 430     } else {
 431         snprintf(win_title, sizeof(win_title), "QEMU%s", status);
 432         snprintf(icon_title, sizeof(icon_title), "QEMU");
 433     }
 434
 435     SDL_WM_SetCaption(win_title, icon_title);
 436 }
 437
 438 static void sdl_hide_cursor(void)
 439 {
 440     if (!cursor_hide)
 441         return;
 442
 443     if (kbd_mouse_is_absolute()) {
 444         SDL_ShowCursor(1);
 445         SDL_SetCursor(sdl_cursor_hidden);
 446     } else {
 447         SDL_ShowCursor(0);
 448     }
 449 }
 450
 451 static void sdl_show_cursor(void)
 452 {
 453     if (!cursor_hide)
 454         return;
 455
 456     if (!kbd_mouse_is_absolute()) {
 457         SDL_ShowCursor(1);
 458         if (guest_cursor &&
 459                 (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
 460             SDL_SetCursor(guest_sprite);
 461         else
 462             SDL_SetCursor(sdl_cursor_normal);
 463     }
 464 }
 465
 466 static void sdl_grab_start(void)
 467 {
 468     if (guest_cursor) {
 469         SDL_SetCursor(guest_sprite);
 470         if (!kbd_mouse_is_absolute() && !absolute_enabled)
 471             SDL_WarpMouse(guest_x, guest_y);
 472     } else
 473         sdl_hide_cursor();
 474
 475     if (SDL_WM_GrabInput(SDL_GRAB_ON) == SDL_GRAB_ON) {
 476         gui_grab = 1;
 477         sdl_update_caption();
 478     } else
 479         sdl_show_cursor();
 480 }
 481
 482 static void sdl_grab_end(void)
 483 {
 484     SDL_WM_GrabInput(SDL_GRAB_OFF);
 485     gui_grab = 0;
 486     sdl_show_cursor();
 487     sdl_update_caption();
 488 }
 489
 490 static void sdl_mouse_mode_change(Notifier *notify)
 491 {
 492     if (kbd_mouse_is_absolute()) {
 493         if (!absolute_enabled) {
 494             sdl_hide_cursor();
 495             if (gui_grab) {
 496                 sdl_grab_end();
 497             }
 498             absolute_enabled = 1;
 499         }
 500     } else if (absolute_enabled) {
 501         sdl_show_cursor();
 502         absolute_enabled = 0;
 503     }
 504 }
 505
 506 static void sdl_send_mouse_event(int dx, int dy, int dz, int x, int y, int state)
 507 {
 508     int buttons;
 509     buttons = 0;
 510     if (state & SDL_BUTTON(SDL_BUTTON_LEFT))
 511         buttons |= MOUSE_EVENT_LBUTTON;
 512     if (state & SDL_BUTTON(SDL_BUTTON_RIGHT))
 513         buttons |= MOUSE_EVENT_RBUTTON;
 514     if (state & SDL_BUTTON(SDL_BUTTON_MIDDLE))
 515         buttons |= MOUSE_EVENT_MBUTTON;
 516
 517     if (kbd_mouse_is_absolute()) {
 518        dx = x * 0x7FFF / (width - 1);
 519        dy = y * 0x7FFF / (height - 1);
 520     } else if (guest_cursor) {
 521         x -= guest_x;
 522         y -= guest_y;
 523         guest_x += x;
 524         guest_y += y;
 525         dx = x;
 526         dy = y;
 527     }
 528
 529     kbd_mouse_event(dx, dy, dz, buttons);
 530 }
 531
 532 static void toggle_full_screen(DisplayState *ds)
 533 {
 534     gui_fullscreen = !gui_fullscreen;
 535     do_sdl_resize(real_screen->w, real_screen->h, real_screen->format->BitsPerPixel);
 536     if (gui_fullscreen) {
 537         scaling_active = 0;
 538         gui_saved_grab = gui_grab;
 539         sdl_grab_start();
 540     } else {
 541         if (!gui_saved_grab)
 542             sdl_grab_end();
 543     }
 544     vga_hw_invalidate();
 545     vga_hw_update();
 546 }
 547
 548 static void sdl_refresh(DisplayState *ds)
 549 {
 550     SDL_Event ev1, *ev = &ev1;
 551     int mod_state;
 552     int buttonstate = SDL_GetMouseState(NULL, NULL);
 553
 554     if (last_vm_running != vm_running) {
 555         last_vm_running = vm_running;
 556         sdl_update_caption();
 557     }
 558
 559     vga_hw_update();
 560     SDL_EnableUNICODE(!is_graphic_console());
 561
 562     while (SDL_PollEvent(ev)) {
 563         switch (ev->type) {
 564         case SDL_VIDEOEXPOSE:
 565             sdl_update(ds, 0, 0, real_screen->w, real_screen->h);
 566             break;
 567         case SDL_KEYDOWN:
 568         case SDL_KEYUP:
 569             if (ev->type == SDL_KEYDOWN) {
 570                 if (alt_grab) {
 571                     mod_state = (SDL_GetModState() & (gui_grab_code | KMOD_LSHIFT)) ==
 572                                 (gui_grab_code | KMOD_LSHIFT);
 573                 } else if (ctrl_grab) {
 574                     mod_state = (SDL_GetModState() & KMOD_RCTRL) == KMOD_RCTRL;
 575                 } else {
 576                     mod_state = (SDL_GetModState() & gui_grab_code) ==
 577                                 gui_grab_code;
 578                 }
 579                 gui_key_modifier_pressed = mod_state;
 580                 if (gui_key_modifier_pressed) {
 581                     int keycode;
 582                     keycode = sdl_keyevent_to_keycode(&ev->key);
 583                     switch(keycode) {
 584                     case 0x21: /* 'f' key on US keyboard */
 585                         toggle_full_screen(ds);
 586                         gui_keysym = 1;
 587                         break;
 588                     case 0x16: /* 'u' key on US keyboard */
 589                         scaling_active = 0;
 590                         sdl_resize(ds);
 591                         vga_hw_invalidate();
 592                         vga_hw_update();
 593                         break;
 594                     case 0x02 ... 0x0a: /* '1' to '9' keys */
 595                         /* Reset the modifiers sent to the current console */
 596                         reset_keys();
 597                         console_select(keycode - 0x02);
 598                         if (!is_graphic_console()) {
 599                             /* display grab if going to a text console */
 600                             if (gui_grab)
 601                                 sdl_grab_end();
 602                         }
 603                         gui_keysym = 1;
 604                         break;
 605                     default:
 606                         break;
 607                     }
 608                 } else if (!is_graphic_console()) {
 609                     int keysym;
 610                     keysym = 0;
 611                     if (ev->key.keysym.mod & (KMOD_LCTRL | KMOD_RCTRL)) {
 612                         switch(ev->key.keysym.sym) {
 613                         case SDLK_UP: keysym = QEMU_KEY_CTRL_UP; break;
 614                         case SDLK_DOWN: keysym = QEMU_KEY_CTRL_DOWN; break;
 615                         case SDLK_LEFT: keysym = QEMU_KEY_CTRL_LEFT; break;
 616                         case SDLK_RIGHT: keysym = QEMU_KEY_CTRL_RIGHT; break;
 617                         case SDLK_HOME: keysym = QEMU_KEY_CTRL_HOME; break;
 618                         case SDLK_END: keysym = QEMU_KEY_CTRL_END; break;
 619                         case SDLK_PAGEUP: keysym = QEMU_KEY_CTRL_PAGEUP; break;
 620                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_CTRL_PAGEDOWN; break;
 621                         default: break;
 622                         }
 623                     } else {
 624                         switch(ev->key.keysym.sym) {
 625                         case SDLK_UP: keysym = QEMU_KEY_UP; break;
 626                         case SDLK_DOWN: keysym = QEMU_KEY_DOWN; break;
 627                         case SDLK_LEFT: keysym = QEMU_KEY_LEFT; break;
 628                         case SDLK_RIGHT: keysym = QEMU_KEY_RIGHT; break;
 629                         case SDLK_HOME: keysym = QEMU_KEY_HOME; break;
 630                         case SDLK_END: keysym = QEMU_KEY_END; break;
 631                         case SDLK_PAGEUP: keysym = QEMU_KEY_PAGEUP; break;
 632                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_PAGEDOWN; break;
 633                         case SDLK_BACKSPACE: keysym = QEMU_KEY_BACKSPACE; break;
 634                         case SDLK_DELETE: keysym = QEMU_KEY_DELETE; break;
 635                         default: break;
 636                         }
 637                     }
 638                     if (keysym) {
 639                         kbd_put_keysym(keysym);
 640                     } else if (ev->key.keysym.unicode != 0) {
 641                         kbd_put_keysym(ev->key.keysym.unicode);
 642                     }
 643                 }
 644             } else if (ev->type == SDL_KEYUP) {
 645                 if (!alt_grab) {
 646                     mod_state = (ev->key.keysym.mod & gui_grab_code);
 647                 } else {
 648                     mod_state = (ev->key.keysym.mod &
 649                                  (gui_grab_code | KMOD_LSHIFT));
 650                 }
 651                 if (!mod_state) {
 652                     if (gui_key_modifier_pressed) {
 653                         gui_key_modifier_pressed = 0;
 654                         if (gui_keysym == 0) {
 655                             /* exit/enter grab if pressing Ctrl-Alt */
 656                             if (!gui_grab) {
 657                                 /* if the application is not active,
 658                                    do not try to enter grab state. It
 659                                    prevents
 660                                    'SDL_WM_GrabInput(SDL_GRAB_ON)'
 661                                    from blocking all the application
 662                                    (SDL bug). */
 663                                 if (SDL_GetAppState() & SDL_APPACTIVE)
 664                                     sdl_grab_start();
 665                             } else {
 666                                 sdl_grab_end();
 667                             }
 668                             /* SDL does not send back all the
 669                                modifiers key, so we must correct it */
 670                             reset_keys();
 671                             break;
 672                         }
 673                         gui_keysym = 0;
 674                     }
 675                 }
 676             }
 677             if (is_graphic_console() && !gui_keysym)
 678                 sdl_process_key(&ev->key);
 679             break;
 680         case SDL_QUIT:
 681             if (!no_quit)
 682                 qemu_system_shutdown_request();
 683             break;
 684         case SDL_MOUSEMOTION:
 685             if (gui_grab || kbd_mouse_is_absolute() ||
 686                 absolute_enabled) {
 687                 sdl_send_mouse_event(ev->motion.xrel, ev->motion.yrel, 0,
 688                        ev->motion.x, ev->motion.y, ev->motion.state);
 689             }
 690             break;
 691         case SDL_MOUSEBUTTONDOWN:
 692         case SDL_MOUSEBUTTONUP:
 693             {
 694                 SDL_MouseButtonEvent *bev = &ev->button;
 695                 if (!gui_grab && !kbd_mouse_is_absolute()) {
 696                     if (ev->type == SDL_MOUSEBUTTONDOWN &&
 697                         (bev->button == SDL_BUTTON_LEFT)) {
 698                         /* start grabbing all events */
 699                         sdl_grab_start();
 700                     }
 701                 } else {
 702                     int dz;
 703                     dz = 0;
 704                     if (ev->type == SDL_MOUSEBUTTONDOWN) {
 705                         buttonstate |= SDL_BUTTON(bev->button);
 706                     } else {
 707                         buttonstate &= ~SDL_BUTTON(bev->button);
 708                     }
 709 #ifdef SDL_BUTTON_WHEELUP
 710                     if (bev->button == SDL_BUTTON_WHEELUP && ev->type == SDL_MOUSEBUTTONDOWN) {
 711                         dz = -1;
 712                     } else if (bev->button == SDL_BUTTON_WHEELDOWN && ev->type == SDL_MOUSEBUTTONDOWN) {
 713                         dz = 1;
 714                     }
 715 #endif
 716                     sdl_send_mouse_event(0, 0, dz, bev->x, bev->y, buttonstate);
 717                 }
 718             }
 719             break;
 720         case SDL_ACTIVEEVENT:
 721             if (gui_grab && ev->active.state == SDL_APPINPUTFOCUS &&
 722                 !ev->active.gain && !gui_fullscreen_initial_grab) {
 723                 sdl_grab_end();
 724             }
 725             if (ev->active.state & SDL_APPACTIVE) {
 726                 if (ev->active.gain) {
 727                     /* Back to default interval */
 728                     dcl->gui_timer_interval = 0;
 729                     dcl->idle = 0;
 730                 } else {
 731                     /* Sleeping interval */
 732                     dcl->gui_timer_interval = 500;
 733                     dcl->idle = 1;
 734                 }
 735             }
 736             break;
 737         case SDL_VIDEORESIZE:
 738         {
 739             SDL_ResizeEvent *rev = &ev->resize;
 740             int bpp = real_screen->format->BitsPerPixel;
 741             if (bpp != 16 && bpp != 32)
 742                 bpp = 32;
 743             do_sdl_resize(rev->w, rev->h, bpp);
 744             scaling_active = 1;
 745             if (!is_buffer_shared(ds->surface)) {
 746                 ds->surface = qemu_resize_displaysurface(ds, ds_get_width(ds), ds_get_height(ds));
 747                 dpy_resize(ds);
 748             }
 749             vga_hw_invalidate();
 750             vga_hw_update();
 751             break;
 752         }
 753         default:
 754             break;
 755         }
 756     }
 757 }
 758
 759 static void sdl_fill(DisplayState *ds, int x, int y, int w, int h, uint32_t c)
 760 {
 761     SDL_Rect dst = { x, y, w, h };
 762     SDL_FillRect(real_screen, &dst, c);
 763 }
 764
 765 static void sdl_mouse_warp(int x, int y, int on)
 766 {
 767     if (on) {
 768         if (!guest_cursor)
 769             sdl_show_cursor();
 770         if (gui_grab || kbd_mouse_is_absolute() || absolute_enabled) {
 771             SDL_SetCursor(guest_sprite);
 772             if (!kbd_mouse_is_absolute() && !absolute_enabled)
 773                 SDL_WarpMouse(x, y);
 774         }
 775     } else if (gui_grab)
 776         sdl_hide_cursor();
 777     guest_cursor = on;
 778     guest_x = x, guest_y = y;
 779 }
 780
 781 static void sdl_mouse_define(int width, int height, int bpp,
 782                              int hot_x, int hot_y,
 783                              uint8_t *image, uint8_t *mask)
 784 {
 785     uint8_t sprite[256], *line;
 786     int x, y, dst, bypl, src = 0;
 787     if (guest_sprite)
 788         SDL_FreeCursor(guest_sprite);
 789
 790     memset(sprite, 0, 256);
 791     bypl = ((width * bpp + 31) >> 5) << 2;
 792     for (y = 0, dst = 0; y < height; y ++, image += bypl) {
 793         line = image;
 794         for (x = 0; x < width; x ++, dst ++) {
 795             switch (bpp) {
 796             case 32:
 797                 src = *(line ++); src |= *(line ++); src |= *(line ++); line++;
 798                 break;
 799             case 24:
 800                 src = *(line ++); src |= *(line ++); src |= *(line ++);
 801                 break;
 802             case 16:
 803             case 15:
 804                 src = *(line ++); src |= *(line ++);
 805                 break;
 806             case 8:
 807                 src = *(line ++);
 808                 break;
 809             case 4:
 810                 src = 0xf & (line[x >> 1] >> ((x & 1)) << 2);
 811                 break;
 812             case 2:
 813                 src = 3 & (line[x >> 2] >> ((x & 3)) << 1);
 814                 break;
 815             case 1:
 816                 src = 1 & (line[x >> 3] >> (x & 7));
 817                 break;
 818             }
 819             if (!src)
 820                 sprite[dst >> 3] |= (1 << (~dst & 7)) & mask[dst >> 3];
 821         }
 822     }
 823     guest_sprite = SDL_CreateCursor(sprite, mask, width, height, hot_x, hot_y);
 824
 825     if (guest_cursor &&
 826             (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
 827         SDL_SetCursor(guest_sprite);
 828 }
 829
 830 static void sdl_cleanup(Notifier *notifier)
 831 {
 832     if (guest_sprite)
 833         SDL_FreeCursor(guest_sprite);
 834     SDL_QuitSubSystem(SDL_INIT_VIDEO);
 835 }
 836
 837 void sdl_display_init(DisplayState *ds, int full_screen, int no_frame)
 838 {
 839     int flags;
 840     uint8_t data = 0;
 841     DisplayAllocator *da;
 842     const SDL_VideoInfo *vi;
 843     static Notifier exit_notifier = { .notify = sdl_cleanup };
 844
 845 #if defined(__APPLE__)
 846     /* always use generic keymaps */
 847     if (!keyboard_layout)
 848         keyboard_layout = "en-us";
 849 #endif
 850     if(keyboard_layout) {
 851         kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
 852         if (!kbd_layout)
 853             exit(1);
 854     }
 855
 856     if (no_frame)
 857         gui_noframe = 1;
 858
 859     flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
 860     if (SDL_Init (flags)) {
 861         fprintf(stderr, "Could not initialize SDL(%s) - exiting\n",
 862                 SDL_GetError());
 863         exit(1);
 864     }
 865     vi = SDL_GetVideoInfo();
 866     host_format = *(vi->vfmt);
 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     exit_notifier_add(&exit_notifier);
 897     if (full_screen) {
 898         gui_fullscreen = 1;
 899         gui_fullscreen_initial_grab = 1;
 900         sdl_grab_start();
 901     }
 902 }