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
  36 static DisplayChangeListener *dcl;
  37 static SDL_Surface *real_screen;
  38 static SDL_Surface *guest_screen = NULL;
  39 static int gui_grab; /* if true, all keyboard/mouse events are grabbed */
  40 static int last_vm_running;
  41 static int gui_saved_grab;
  42 static int gui_fullscreen;
  43 static int gui_noframe;
  44 static int gui_key_modifier_pressed;
  45 static int gui_keysym;
  46 static int gui_fullscreen_initial_grab;
  47 static int gui_grab_code = KMOD_LALT | KMOD_LCTRL;
  48 static uint8_t modifiers_state[256];
  49 static int width, height;
  50 static SDL_Cursor *sdl_cursor_normal;
  51 static SDL_Cursor *sdl_cursor_hidden;
  52 static int absolute_enabled = 0;
  53 static int guest_cursor = 0;
  54 static int guest_x, guest_y;
  55 static SDL_Cursor *guest_sprite = 0;
  56 static uint8_t allocator;
  57 static uint8_t hostbpp;
  58
  59 static void sdl_update(DisplayState *ds, int x, int y, int w, int h)
  60 {
  61     //    printf("updating x=%d y=%d w=%d h=%d\n", x, y, w, h);
  62     if (guest_screen) {
  63         SDL_Rect rec;
  64         rec.x = x;
  65         rec.y = y;
  66         rec.w = w;
  67         rec.h = h;
  68         SDL_BlitSurface(guest_screen, &rec, real_screen, &rec);
  69     }
  70     SDL_UpdateRect(real_screen, x, y, w, h);
  71 }
  72
  73 static void sdl_setdata(DisplayState *ds)
  74 {
  75     SDL_Rect rec;
  76     rec.x = 0;
  77     rec.y = 0;
  78     rec.w = real_screen->w;
  79     rec.h = real_screen->h;
  80
  81     if (guest_screen != NULL) SDL_FreeSurface(guest_screen);
  82
  83     guest_screen = SDL_CreateRGBSurfaceFrom(ds_get_data(ds), ds_get_width(ds), ds_get_height(ds),
  84                                             ds_get_bits_per_pixel(ds), ds_get_linesize(ds),
  85                                             ds->surface->pf.rmask, ds->surface->pf.gmask,
  86                                             ds->surface->pf.bmask, ds->surface->pf.amask);
  87 }
  88
  89 static void do_sdl_resize(int width, int height, int bpp)
  90 {
  91     int flags;
  92
  93     //    printf("resizing to %d %d\n", w, h);
  94
  95     flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
  96     if (gui_fullscreen)
  97         flags |= SDL_FULLSCREEN;
  98     if (gui_noframe)
  99         flags |= SDL_NOFRAME;
 100
 101     real_screen = SDL_SetVideoMode(width, height, bpp, flags);
 102     if (!real_screen) {
 103         fprintf(stderr, "Could not open SDL display\n");
 104         exit(1);
 105     }
 106 }
 107
 108 static void sdl_resize(DisplayState *ds)
 109 {
 110     if  (!allocator) {
 111         do_sdl_resize(ds_get_width(ds), ds_get_height(ds), 0);
 112         sdl_setdata(ds);
 113     } else {
 114         if (guest_screen != NULL) {
 115             SDL_FreeSurface(guest_screen);
 116             guest_screen = NULL;
 117         }
 118     }
 119 }
 120
 121 static PixelFormat sdl_to_qemu_pixelformat(SDL_PixelFormat *sdl_pf)
 122 {
 123     PixelFormat qemu_pf;
 124
 125     memset(&qemu_pf, 0x00, sizeof(PixelFormat));
 126
 127     qemu_pf.bits_per_pixel = sdl_pf->BitsPerPixel;
 128     qemu_pf.bytes_per_pixel = sdl_pf->BytesPerPixel;
 129     qemu_pf.depth = (qemu_pf.bits_per_pixel) == 32 ? 24 : (qemu_pf.bits_per_pixel);
 130
 131     qemu_pf.rmask = sdl_pf->Rmask;
 132     qemu_pf.gmask = sdl_pf->Gmask;
 133     qemu_pf.bmask = sdl_pf->Bmask;
 134     qemu_pf.amask = sdl_pf->Amask;
 135
 136     qemu_pf.rshift = sdl_pf->Rshift;
 137     qemu_pf.gshift = sdl_pf->Gshift;
 138     qemu_pf.bshift = sdl_pf->Bshift;
 139     qemu_pf.ashift = sdl_pf->Ashift;
 140
 141     qemu_pf.rbits = 8 - sdl_pf->Rloss;
 142     qemu_pf.gbits = 8 - sdl_pf->Gloss;
 143     qemu_pf.bbits = 8 - sdl_pf->Bloss;
 144     qemu_pf.abits = 8 - sdl_pf->Aloss;
 145
 146     qemu_pf.rmax = ((1 << qemu_pf.rbits) - 1);
 147     qemu_pf.gmax = ((1 << qemu_pf.gbits) - 1);
 148     qemu_pf.bmax = ((1 << qemu_pf.bbits) - 1);
 149     qemu_pf.amax = ((1 << qemu_pf.abits) - 1);
 150
 151     return qemu_pf;
 152 }
 153
 154 static DisplaySurface* sdl_create_displaysurface(int width, int height)
 155 {
 156     DisplaySurface *surface = (DisplaySurface*) qemu_mallocz(sizeof(DisplaySurface));
 157     if (surface == NULL) {
 158         fprintf(stderr, "sdl_create_displaysurface: malloc failed\n");
 159         exit(1);
 160     }
 161
 162     surface->width = width;
 163     surface->height = height;
 164
 165     if (hostbpp == 16)
 166         do_sdl_resize(width, height, 16);
 167     else
 168         do_sdl_resize(width, height, 32);
 169
 170     surface->pf = sdl_to_qemu_pixelformat(real_screen->format);
 171     surface->linesize = real_screen->pitch;
 172     surface->data = real_screen->pixels;
 173
 174 #ifdef WORDS_BIGENDIAN
 175     surface->flags = QEMU_ALLOCATED_FLAG | QEMU_BIG_ENDIAN_FLAG;
 176 #else
 177     surface->flags = QEMU_ALLOCATED_FLAG;
 178 #endif
 179     allocator = 1;
 180
 181     return surface;
 182 }
 183
 184 static void sdl_free_displaysurface(DisplaySurface *surface)
 185 {
 186     allocator = 0;
 187     if (surface == NULL)
 188         return;
 189     qemu_free(surface);
 190 }
 191
 192 static DisplaySurface* sdl_resize_displaysurface(DisplaySurface *surface, int width, int height)
 193 {
 194     sdl_free_displaysurface(surface);
 195     return sdl_create_displaysurface(width, height);
 196 }
 197
 198 /* generic keyboard conversion */
 199
 200 #include "sdl_keysym.h"
 201
 202 static kbd_layout_t *kbd_layout = NULL;
 203
 204 static uint8_t sdl_keyevent_to_keycode_generic(const SDL_KeyboardEvent *ev)
 205 {
 206     int keysym;
 207     /* workaround for X11+SDL bug with AltGR */
 208     keysym = ev->keysym.sym;
 209     if (keysym == 0 && ev->keysym.scancode == 113)
 210         keysym = SDLK_MODE;
 211     /* For Japanese key '\' and '|' */
 212     if (keysym == 92 && ev->keysym.scancode == 133) {
 213         keysym = 0xa5;
 214     }
 215     return keysym2scancode(kbd_layout, keysym);
 216 }
 217
 218 /* specific keyboard conversions from scan codes */
 219
 220 #if defined(_WIN32)
 221
 222 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 223 {
 224     return ev->keysym.scancode;
 225 }
 226
 227 #else
 228
 229 #if defined(SDL_VIDEO_DRIVER_X11)
 230 #include <X11/XKBlib.h>
 231
 232 static int check_for_evdev(void)
 233 {
 234     SDL_SysWMinfo info;
 235     XkbDescPtr desc;
 236     int has_evdev = 0;
 237     const char *keycodes;
 238
 239     SDL_VERSION(&info.version);
 240     if (!SDL_GetWMInfo(&info))
 241         return 0;
 242
 243     desc = XkbGetKeyboard(info.info.x11.display,
 244                           XkbGBN_AllComponentsMask,
 245                           XkbUseCoreKbd);
 246     if (desc == NULL || desc->names == NULL)
 247         return 0;
 248
 249     keycodes = XGetAtomName(info.info.x11.display, desc->names->keycodes);
 250     if (keycodes == NULL)
 251         fprintf(stderr, "could not lookup keycode name\n");
 252     else if (strstart(keycodes, "evdev_", NULL))
 253         has_evdev = 1;
 254     else if (!strstart(keycodes, "xfree86_", NULL))
 255         fprintf(stderr,
 256                 "unknown keycodes `%s', please report to qemu-devel@nongnu.org\n",
 257                 keycodes);
 258
 259     XkbFreeClientMap(desc, XkbGBN_AllComponentsMask, True);
 260
 261     return has_evdev;
 262 }
 263 #else
 264 static int check_for_evdev(void)
 265 {
 266         return 0;
 267 }
 268 #endif
 269
 270 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 271 {
 272     int keycode;
 273     static int has_evdev = -1;
 274
 275     if (has_evdev == -1)
 276         has_evdev = check_for_evdev();
 277
 278     keycode = ev->keysym.scancode;
 279
 280     if (keycode < 9) {
 281         keycode = 0;
 282     } else if (keycode < 97) {
 283         keycode -= 8; /* just an offset */
 284     } else if (keycode < 158) {
 285         /* use conversion table */
 286         if (has_evdev)
 287             keycode = translate_evdev_keycode(keycode - 97);
 288         else
 289             keycode = translate_xfree86_keycode(keycode - 97);
 290     } else if (keycode == 208) { /* Hiragana_Katakana */
 291         keycode = 0x70;
 292     } else if (keycode == 211) { /* backslash */
 293         keycode = 0x73;
 294     } else {
 295         keycode = 0;
 296     }
 297     return keycode;
 298 }
 299
 300 #endif
 301
 302 static void reset_keys(void)
 303 {
 304     int i;
 305     for(i = 0; i < 256; i++) {
 306         if (modifiers_state[i]) {
 307             if (i & 0x80)
 308                 kbd_put_keycode(0xe0);
 309             kbd_put_keycode(i | 0x80);
 310             modifiers_state[i] = 0;
 311         }
 312     }
 313 }
 314
 315 static void sdl_process_key(SDL_KeyboardEvent *ev)
 316 {
 317     int keycode, v;
 318
 319     if (ev->keysym.sym == SDLK_PAUSE) {
 320         /* specific case */
 321         v = 0;
 322         if (ev->type == SDL_KEYUP)
 323             v |= 0x80;
 324         kbd_put_keycode(0xe1);
 325         kbd_put_keycode(0x1d | v);
 326         kbd_put_keycode(0x45 | v);
 327         return;
 328     }
 329
 330     if (kbd_layout) {
 331         keycode = sdl_keyevent_to_keycode_generic(ev);
 332     } else {
 333         keycode = sdl_keyevent_to_keycode(ev);
 334     }
 335
 336     switch(keycode) {
 337     case 0x00:
 338         /* sent when leaving window: reset the modifiers state */
 339         reset_keys();
 340         return;
 341     case 0x2a:                          /* Left Shift */
 342     case 0x36:                          /* Right Shift */
 343     case 0x1d:                          /* Left CTRL */
 344     case 0x9d:                          /* Right CTRL */
 345     case 0x38:                          /* Left ALT */
 346     case 0xb8:                         /* Right ALT */
 347         if (ev->type == SDL_KEYUP)
 348             modifiers_state[keycode] = 0;
 349         else
 350             modifiers_state[keycode] = 1;
 351         break;
 352     case 0x45: /* num lock */
 353     case 0x3a: /* caps lock */
 354         /* SDL does not send the key up event, so we generate it */
 355         kbd_put_keycode(keycode);
 356         kbd_put_keycode(keycode | 0x80);
 357         return;
 358     }
 359
 360     /* now send the key code */
 361     if (keycode & 0x80)
 362         kbd_put_keycode(0xe0);
 363     if (ev->type == SDL_KEYUP)
 364         kbd_put_keycode(keycode | 0x80);
 365     else
 366         kbd_put_keycode(keycode & 0x7f);
 367 }
 368
 369 static void sdl_update_caption(void)
 370 {
 371     char buf[1024];
 372     const char *status = "";
 373
 374     if (!vm_running)
 375         status = " [Stopped]";
 376     else if (gui_grab) {
 377         if (!alt_grab)
 378             status = " - Press Ctrl-Alt to exit grab";
 379         else
 380             status = " - Press Ctrl-Alt-Shift to exit grab";
 381     }
 382
 383     if (qemu_name)
 384         snprintf(buf, sizeof(buf), "QEMU (%s)%s", qemu_name, status);
 385     else
 386         snprintf(buf, sizeof(buf), "QEMU%s", status);
 387
 388     SDL_WM_SetCaption(buf, "QEMU");
 389 }
 390
 391 static void sdl_hide_cursor(void)
 392 {
 393     if (!cursor_hide)
 394         return;
 395
 396     if (kbd_mouse_is_absolute()) {
 397         SDL_ShowCursor(1);
 398         SDL_SetCursor(sdl_cursor_hidden);
 399     } else {
 400         SDL_ShowCursor(0);
 401     }
 402 }
 403
 404 static void sdl_show_cursor(void)
 405 {
 406     if (!cursor_hide)
 407         return;
 408
 409     if (!kbd_mouse_is_absolute()) {
 410         SDL_ShowCursor(1);
 411         if (guest_cursor &&
 412                 (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
 413             SDL_SetCursor(guest_sprite);
 414         else
 415             SDL_SetCursor(sdl_cursor_normal);
 416     }
 417 }
 418
 419 static void sdl_grab_start(void)
 420 {
 421     if (guest_cursor) {
 422         SDL_SetCursor(guest_sprite);
 423         if (!kbd_mouse_is_absolute() && !absolute_enabled)
 424             SDL_WarpMouse(guest_x, guest_y);
 425     } else
 426         sdl_hide_cursor();
 427
 428     if (SDL_WM_GrabInput(SDL_GRAB_ON) == SDL_GRAB_ON) {
 429         gui_grab = 1;
 430         sdl_update_caption();
 431     } else
 432         sdl_show_cursor();
 433 }
 434
 435 static void sdl_grab_end(void)
 436 {
 437     SDL_WM_GrabInput(SDL_GRAB_OFF);
 438     gui_grab = 0;
 439     sdl_show_cursor();
 440     sdl_update_caption();
 441 }
 442
 443 static void sdl_send_mouse_event(int dx, int dy, int dz, int x, int y, int state)
 444 {
 445     int buttons;
 446     buttons = 0;
 447     if (state & SDL_BUTTON(SDL_BUTTON_LEFT))
 448         buttons |= MOUSE_EVENT_LBUTTON;
 449     if (state & SDL_BUTTON(SDL_BUTTON_RIGHT))
 450         buttons |= MOUSE_EVENT_RBUTTON;
 451     if (state & SDL_BUTTON(SDL_BUTTON_MIDDLE))
 452         buttons |= MOUSE_EVENT_MBUTTON;
 453
 454     if (kbd_mouse_is_absolute()) {
 455         if (!absolute_enabled) {
 456             sdl_hide_cursor();
 457             if (gui_grab) {
 458                 sdl_grab_end();
 459             }
 460             absolute_enabled = 1;
 461         }
 462
 463        dx = x * 0x7FFF / (width - 1);
 464        dy = y * 0x7FFF / (height - 1);
 465     } else if (absolute_enabled) {
 466         sdl_show_cursor();
 467         absolute_enabled = 0;
 468     } else if (guest_cursor) {
 469         x -= guest_x;
 470         y -= guest_y;
 471         guest_x += x;
 472         guest_y += y;
 473         dx = x;
 474         dy = y;
 475     }
 476
 477     kbd_mouse_event(dx, dy, dz, buttons);
 478 }
 479
 480 static void toggle_full_screen(DisplayState *ds)
 481 {
 482     gui_fullscreen = !gui_fullscreen;
 483     do_sdl_resize(real_screen->w, real_screen->h, real_screen->format->BitsPerPixel);
 484     if (gui_fullscreen) {
 485         gui_saved_grab = gui_grab;
 486         sdl_grab_start();
 487     } else {
 488         if (!gui_saved_grab)
 489             sdl_grab_end();
 490     }
 491     vga_hw_invalidate();
 492     vga_hw_update();
 493 }
 494
 495 static void sdl_refresh(DisplayState *ds)
 496 {
 497     SDL_Event ev1, *ev = &ev1;
 498     int mod_state;
 499     int buttonstate = SDL_GetMouseState(NULL, NULL);
 500
 501     if (last_vm_running != vm_running) {
 502         last_vm_running = vm_running;
 503         sdl_update_caption();
 504     }
 505
 506     vga_hw_update();
 507     SDL_EnableUNICODE(!is_graphic_console());
 508
 509     while (SDL_PollEvent(ev)) {
 510         switch (ev->type) {
 511         case SDL_VIDEOEXPOSE:
 512             sdl_update(ds, 0, 0, real_screen->w, real_screen->h);
 513             break;
 514         case SDL_KEYDOWN:
 515         case SDL_KEYUP:
 516             if (ev->type == SDL_KEYDOWN) {
 517                 if (!alt_grab) {
 518                     mod_state = (SDL_GetModState() & gui_grab_code) ==
 519                                 gui_grab_code;
 520                 } else {
 521                     mod_state = (SDL_GetModState() & (gui_grab_code | KMOD_LSHIFT)) ==
 522                                 (gui_grab_code | KMOD_LSHIFT);
 523                 }
 524                 gui_key_modifier_pressed = mod_state;
 525                 if (gui_key_modifier_pressed) {
 526                     int keycode;
 527                     keycode = sdl_keyevent_to_keycode(&ev->key);
 528                     switch(keycode) {
 529                     case 0x21: /* 'f' key on US keyboard */
 530                         toggle_full_screen(ds);
 531                         gui_keysym = 1;
 532                         break;
 533                     case 0x02 ... 0x0a: /* '1' to '9' keys */
 534                         /* Reset the modifiers sent to the current console */
 535                         reset_keys();
 536                         console_select(keycode - 0x02);
 537                         if (!is_graphic_console()) {
 538                             /* display grab if going to a text console */
 539                             if (gui_grab)
 540                                 sdl_grab_end();
 541                         }
 542                         gui_keysym = 1;
 543                         break;
 544                     default:
 545                         break;
 546                     }
 547                 } else if (!is_graphic_console()) {
 548                     int keysym;
 549                     keysym = 0;
 550                     if (ev->key.keysym.mod & (KMOD_LCTRL | KMOD_RCTRL)) {
 551                         switch(ev->key.keysym.sym) {
 552                         case SDLK_UP: keysym = QEMU_KEY_CTRL_UP; break;
 553                         case SDLK_DOWN: keysym = QEMU_KEY_CTRL_DOWN; break;
 554                         case SDLK_LEFT: keysym = QEMU_KEY_CTRL_LEFT; break;
 555                         case SDLK_RIGHT: keysym = QEMU_KEY_CTRL_RIGHT; break;
 556                         case SDLK_HOME: keysym = QEMU_KEY_CTRL_HOME; break;
 557                         case SDLK_END: keysym = QEMU_KEY_CTRL_END; break;
 558                         case SDLK_PAGEUP: keysym = QEMU_KEY_CTRL_PAGEUP; break;
 559                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_CTRL_PAGEDOWN; break;
 560                         default: break;
 561                         }
 562                     } else {
 563                         switch(ev->key.keysym.sym) {
 564                         case SDLK_UP: keysym = QEMU_KEY_UP; break;
 565                         case SDLK_DOWN: keysym = QEMU_KEY_DOWN; break;
 566                         case SDLK_LEFT: keysym = QEMU_KEY_LEFT; break;
 567                         case SDLK_RIGHT: keysym = QEMU_KEY_RIGHT; break;
 568                         case SDLK_HOME: keysym = QEMU_KEY_HOME; break;
 569                         case SDLK_END: keysym = QEMU_KEY_END; break;
 570                         case SDLK_PAGEUP: keysym = QEMU_KEY_PAGEUP; break;
 571                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_PAGEDOWN; break;
 572                         case SDLK_BACKSPACE: keysym = QEMU_KEY_BACKSPACE; break;
 573                         case SDLK_DELETE: keysym = QEMU_KEY_DELETE; break;
 574                         default: break;
 575                         }
 576                     }
 577                     if (keysym) {
 578                         kbd_put_keysym(keysym);
 579                     } else if (ev->key.keysym.unicode != 0) {
 580                         kbd_put_keysym(ev->key.keysym.unicode);
 581                     }
 582                 }
 583             } else if (ev->type == SDL_KEYUP) {
 584                 if (!alt_grab) {
 585                     mod_state = (ev->key.keysym.mod & gui_grab_code);
 586                 } else {
 587                     mod_state = (ev->key.keysym.mod &
 588                                  (gui_grab_code | KMOD_LSHIFT));
 589                 }
 590                 if (!mod_state) {
 591                     if (gui_key_modifier_pressed) {
 592                         gui_key_modifier_pressed = 0;
 593                         if (gui_keysym == 0) {
 594                             /* exit/enter grab if pressing Ctrl-Alt */
 595                             if (!gui_grab) {
 596                                 /* if the application is not active,
 597                                    do not try to enter grab state. It
 598                                    prevents
 599                                    'SDL_WM_GrabInput(SDL_GRAB_ON)'
 600                                    from blocking all the application
 601                                    (SDL bug). */
 602                                 if (SDL_GetAppState() & SDL_APPACTIVE)
 603                                     sdl_grab_start();
 604                             } else {
 605                                 sdl_grab_end();
 606                             }
 607                             /* SDL does not send back all the
 608                                modifiers key, so we must correct it */
 609                             reset_keys();
 610                             break;
 611                         }
 612                         gui_keysym = 0;
 613                     }
 614                 }
 615             }
 616             if (is_graphic_console() && !gui_keysym)
 617                 sdl_process_key(&ev->key);
 618             break;
 619         case SDL_QUIT:
 620             if (!no_quit)
 621                 qemu_system_shutdown_request();
 622             break;
 623         case SDL_MOUSEMOTION:
 624             if (gui_grab || kbd_mouse_is_absolute() ||
 625                 absolute_enabled) {
 626                 sdl_send_mouse_event(ev->motion.xrel, ev->motion.yrel, 0,
 627                        ev->motion.x, ev->motion.y, ev->motion.state);
 628             }
 629             break;
 630         case SDL_MOUSEBUTTONDOWN:
 631         case SDL_MOUSEBUTTONUP:
 632             {
 633                 SDL_MouseButtonEvent *bev = &ev->button;
 634                 if (!gui_grab && !kbd_mouse_is_absolute()) {
 635                     if (ev->type == SDL_MOUSEBUTTONDOWN &&
 636                         (bev->button == SDL_BUTTON_LEFT)) {
 637                         /* start grabbing all events */
 638                         sdl_grab_start();
 639                     }
 640                 } else {
 641                     int dz;
 642                     dz = 0;
 643                     if (ev->type == SDL_MOUSEBUTTONDOWN) {
 644                         buttonstate |= SDL_BUTTON(bev->button);
 645                     } else {
 646                         buttonstate &= ~SDL_BUTTON(bev->button);
 647                     }
 648 #ifdef SDL_BUTTON_WHEELUP
 649                     if (bev->button == SDL_BUTTON_WHEELUP && ev->type == SDL_MOUSEBUTTONDOWN) {
 650                         dz = -1;
 651                     } else if (bev->button == SDL_BUTTON_WHEELDOWN && ev->type == SDL_MOUSEBUTTONDOWN) {
 652                         dz = 1;
 653                     }
 654 #endif
 655                     sdl_send_mouse_event(0, 0, dz, bev->x, bev->y, buttonstate);
 656                 }
 657             }
 658             break;
 659         case SDL_ACTIVEEVENT:
 660             if (gui_grab && ev->active.state == SDL_APPINPUTFOCUS &&
 661                 !ev->active.gain && !gui_fullscreen_initial_grab) {
 662                 sdl_grab_end();
 663             }
 664             if (ev->active.state & SDL_APPACTIVE) {
 665                 if (ev->active.gain) {
 666                     /* Back to default interval */
 667                     dcl->gui_timer_interval = 0;
 668                     dcl->idle = 0;
 669                 } else {
 670                     /* Sleeping interval */
 671                     dcl->gui_timer_interval = 500;
 672                     dcl->idle = 1;
 673                 }
 674             }
 675             break;
 676         default:
 677             break;
 678         }
 679     }
 680 }
 681
 682 static void sdl_fill(DisplayState *ds, int x, int y, int w, int h, uint32_t c)
 683 {
 684     SDL_Rect dst = { x, y, w, h };
 685     SDL_FillRect(real_screen, &dst, c);
 686 }
 687
 688 static void sdl_mouse_warp(int x, int y, int on)
 689 {
 690     if (on) {
 691         if (!guest_cursor)
 692             sdl_show_cursor();
 693         if (gui_grab || kbd_mouse_is_absolute() || absolute_enabled) {
 694             SDL_SetCursor(guest_sprite);
 695             if (!kbd_mouse_is_absolute() && !absolute_enabled)
 696                 SDL_WarpMouse(x, y);
 697         }
 698     } else if (gui_grab)
 699         sdl_hide_cursor();
 700     guest_cursor = on;
 701     guest_x = x, guest_y = y;
 702 }
 703
 704 static void sdl_mouse_define(int width, int height, int bpp,
 705                              int hot_x, int hot_y,
 706                              uint8_t *image, uint8_t *mask)
 707 {
 708     uint8_t sprite[256], *line;
 709     int x, y, dst, bypl, src = 0;
 710     if (guest_sprite)
 711         SDL_FreeCursor(guest_sprite);
 712
 713     memset(sprite, 0, 256);
 714     bypl = ((width * bpp + 31) >> 5) << 2;
 715     for (y = 0, dst = 0; y < height; y ++, image += bypl) {
 716         line = image;
 717         for (x = 0; x < width; x ++, dst ++) {
 718             switch (bpp) {
 719             case 24:
 720                 src = *(line ++); src |= *(line ++); src |= *(line ++);
 721                 break;
 722             case 16:
 723             case 15:
 724                 src = *(line ++); src |= *(line ++);
 725                 break;
 726             case 8:
 727                 src = *(line ++);
 728                 break;
 729             case 4:
 730                 src = 0xf & (line[x >> 1] >> ((x & 1)) << 2);
 731                 break;
 732             case 2:
 733                 src = 3 & (line[x >> 2] >> ((x & 3)) << 1);
 734                 break;
 735             case 1:
 736                 src = 1 & (line[x >> 3] >> (x & 7));
 737                 break;
 738             }
 739             if (!src)
 740                 sprite[dst >> 3] |= (1 << (~dst & 7)) & mask[dst >> 3];
 741         }
 742     }
 743     guest_sprite = SDL_CreateCursor(sprite, mask, width, height, hot_x, hot_y);
 744
 745     if (guest_cursor &&
 746             (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
 747         SDL_SetCursor(guest_sprite);
 748 }
 749
 750 static void sdl_cleanup(void)
 751 {
 752     if (guest_sprite)
 753         SDL_FreeCursor(guest_sprite);
 754     SDL_Quit();
 755 }
 756
 757 void sdl_display_init(DisplayState *ds, int full_screen, int no_frame)
 758 {
 759     int flags;
 760     uint8_t data = 0;
 761     DisplayAllocator *da;
 762     const SDL_VideoInfo *vi;
 763
 764 #if defined(__APPLE__)
 765     /* always use generic keymaps */
 766     if (!keyboard_layout)
 767         keyboard_layout = "en-us";
 768 #endif
 769     if(keyboard_layout) {
 770         kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
 771         if (!kbd_layout)
 772             exit(1);
 773     }
 774
 775     if (no_frame)
 776         gui_noframe = 1;
 777
 778     flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
 779     if (SDL_Init (flags)) {
 780         fprintf(stderr, "Could not initialize SDL - exiting\n");
 781         exit(1);
 782     }
 783     vi = SDL_GetVideoInfo();
 784     hostbpp = vi->vfmt->BitsPerPixel;
 785
 786     dcl = qemu_mallocz(sizeof(DisplayChangeListener));
 787     dcl->dpy_update = sdl_update;
 788     dcl->dpy_resize = sdl_resize;
 789     dcl->dpy_refresh = sdl_refresh;
 790     dcl->dpy_setdata = sdl_setdata;
 791     dcl->dpy_fill = sdl_fill;
 792     ds->mouse_set = sdl_mouse_warp;
 793     ds->cursor_define = sdl_mouse_define;
 794     register_displaychangelistener(ds, dcl);
 795
 796     da = qemu_mallocz(sizeof(DisplayAllocator));
 797     da->create_displaysurface = sdl_create_displaysurface;
 798     da->resize_displaysurface = sdl_resize_displaysurface;
 799     da->free_displaysurface = sdl_free_displaysurface;
 800     if (register_displayallocator(ds, da) == da) {
 801         DisplaySurface *surf;
 802         surf = sdl_create_displaysurface(ds_get_width(ds), ds_get_height(ds));
 803         defaultallocator_free_displaysurface(ds->surface);
 804         ds->surface = surf;
 805         dpy_resize(ds);
 806     }
 807
 808     sdl_update_caption();
 809     SDL_EnableKeyRepeat(250, 50);
 810     gui_grab = 0;
 811
 812     sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
 813     sdl_cursor_normal = SDL_GetCursor();
 814
 815     atexit(sdl_cleanup);
 816     if (full_screen) {
 817         gui_fullscreen = 1;
 818         gui_fullscreen_initial_grab = 1;
 819         sdl_grab_start();
 820     }
 821 }