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 #ifndef _WIN32
  32 #include <signal.h>
  33 #endif
  34
  35 #include "qemu-common.h"
  36 #include "console.h"
  37 #include "sysemu.h"
  38 #include "x_keymap.h"
  39 #include "sdl_zoom.h"
  40
  41 static DisplayChangeListener *dcl;
  42 static SDL_Surface *real_screen;
  43 static SDL_Surface *guest_screen = NULL;
  44 static int gui_grab; /* if true, all keyboard/mouse events are grabbed */
  45 static int last_vm_running;
  46 static int gui_saved_grab;
  47 static int gui_fullscreen;
  48 static int gui_noframe;
  49 static int gui_key_modifier_pressed;
  50 static int gui_keysym;
  51 static int gui_fullscreen_initial_grab;
  52 static int gui_grab_code = KMOD_LALT | KMOD_LCTRL;
  53 static uint8_t modifiers_state[256];
  54 static int width, height;
  55 static SDL_Cursor *sdl_cursor_normal;
  56 static SDL_Cursor *sdl_cursor_hidden;
  57 static int absolute_enabled = 0;
  58 static int guest_cursor = 0;
  59 static int guest_x, guest_y;
  60 static SDL_Cursor *guest_sprite = NULL;
  61 static uint8_t allocator;
  62 static SDL_PixelFormat host_format;
  63 static int scaling_active = 0;
  64 static Notifier mouse_mode_notifier;
  65
  66 static void sdl_update(DisplayState *ds, int x, int y, int w, int h)
  67 {
  68     //    printf("updating x=%d y=%d w=%d h=%d\n", x, y, w, h);
  69     SDL_Rect rec;
  70     rec.x = x;
  71     rec.y = y;
  72     rec.w = w;
  73     rec.h = h;
  74
  75     if (guest_screen) {
  76         if (!scaling_active) {
  77             SDL_BlitSurface(guest_screen, &rec, real_screen, &rec);
  78         } else {
  79             if (sdl_zoom_blit(guest_screen, real_screen, SMOOTHING_ON, &rec) < 0) {
  80                 fprintf(stderr, "Zoom blit failed\n");
  81                 exit(1);
  82             }
  83         }
  84     }
  85     SDL_UpdateRect(real_screen, rec.x, rec.y, rec.w, rec.h);
  86 }
  87
  88 static void sdl_setdata(DisplayState *ds)
  89 {
  90     SDL_Rect rec;
  91     rec.x = 0;
  92     rec.y = 0;
  93     rec.w = real_screen->w;
  94     rec.h = real_screen->h;
  95
  96     if (guest_screen != NULL) SDL_FreeSurface(guest_screen);
  97
  98     guest_screen = SDL_CreateRGBSurfaceFrom(ds_get_data(ds), ds_get_width(ds), ds_get_height(ds),
  99                                             ds_get_bits_per_pixel(ds), ds_get_linesize(ds),
 100                                             ds->surface->pf.rmask, ds->surface->pf.gmask,
 101                                             ds->surface->pf.bmask, ds->surface->pf.amask);
 102 }
 103
 104 static void do_sdl_resize(int new_width, int new_height, int bpp)
 105 {
 106     int flags;
 107
 108     //    printf("resizing to %d %d\n", w, h);
 109
 110     flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL|SDL_RESIZABLE;
 111     if (gui_fullscreen)
 112         flags |= SDL_FULLSCREEN;
 113     if (gui_noframe)
 114         flags |= SDL_NOFRAME;
 115
 116     width = new_width;
 117     height = new_height;
 118     real_screen = SDL_SetVideoMode(width, height, bpp, flags);
 119     if (!real_screen) {
 120         fprintf(stderr, "Could not open SDL display (%dx%dx%d): %s\n", width,
 121                 height, bpp, SDL_GetError());
 122         exit(1);
 123     }
 124 }
 125
 126 static void sdl_resize(DisplayState *ds)
 127 {
 128     if  (!allocator) {
 129         if (!scaling_active)
 130             do_sdl_resize(ds_get_width(ds), ds_get_height(ds), 0);
 131         else if (real_screen->format->BitsPerPixel != ds_get_bits_per_pixel(ds))
 132             do_sdl_resize(real_screen->w, real_screen->h, ds_get_bits_per_pixel(ds));
 133         sdl_setdata(ds);
 134     } else {
 135         if (guest_screen != NULL) {
 136             SDL_FreeSurface(guest_screen);
 137             guest_screen = NULL;
 138         }
 139     }
 140 }
 141
 142 static PixelFormat sdl_to_qemu_pixelformat(SDL_PixelFormat *sdl_pf)
 143 {
 144     PixelFormat qemu_pf;
 145
 146     memset(&qemu_pf, 0x00, sizeof(PixelFormat));
 147
 148     qemu_pf.bits_per_pixel = sdl_pf->BitsPerPixel;
 149     qemu_pf.bytes_per_pixel = sdl_pf->BytesPerPixel;
 150     qemu_pf.depth = (qemu_pf.bits_per_pixel) == 32 ? 24 : (qemu_pf.bits_per_pixel);
 151
 152     qemu_pf.rmask = sdl_pf->Rmask;
 153     qemu_pf.gmask = sdl_pf->Gmask;
 154     qemu_pf.bmask = sdl_pf->Bmask;
 155     qemu_pf.amask = sdl_pf->Amask;
 156
 157     qemu_pf.rshift = sdl_pf->Rshift;
 158     qemu_pf.gshift = sdl_pf->Gshift;
 159     qemu_pf.bshift = sdl_pf->Bshift;
 160     qemu_pf.ashift = sdl_pf->Ashift;
 161
 162     qemu_pf.rbits = 8 - sdl_pf->Rloss;
 163     qemu_pf.gbits = 8 - sdl_pf->Gloss;
 164     qemu_pf.bbits = 8 - sdl_pf->Bloss;
 165     qemu_pf.abits = 8 - sdl_pf->Aloss;
 166
 167     qemu_pf.rmax = ((1 << qemu_pf.rbits) - 1);
 168     qemu_pf.gmax = ((1 << qemu_pf.gbits) - 1);
 169     qemu_pf.bmax = ((1 << qemu_pf.bbits) - 1);
 170     qemu_pf.amax = ((1 << qemu_pf.abits) - 1);
 171
 172     return qemu_pf;
 173 }
 174
 175 static DisplaySurface* sdl_create_displaysurface(int width, int height)
 176 {
 177     DisplaySurface *surface = (DisplaySurface*) qemu_mallocz(sizeof(DisplaySurface));
 178     if (surface == NULL) {
 179         fprintf(stderr, "sdl_create_displaysurface: malloc failed\n");
 180         exit(1);
 181     }
 182
 183     surface->width = width;
 184     surface->height = height;
 185
 186     if (scaling_active) {
 187         if (host_format.BytesPerPixel != 2 && host_format.BytesPerPixel != 4) {
 188             surface->linesize = width * 4;
 189             surface->pf = qemu_default_pixelformat(32);
 190         } else {
 191             surface->linesize = width * host_format.BytesPerPixel;
 192             surface->pf = sdl_to_qemu_pixelformat(&host_format);
 193         }
 194 #ifdef HOST_WORDS_BIGENDIAN
 195         surface->flags = QEMU_ALLOCATED_FLAG | QEMU_BIG_ENDIAN_FLAG;
 196 #else
 197         surface->flags = QEMU_ALLOCATED_FLAG;
 198 #endif
 199         surface->data = (uint8_t*) qemu_mallocz(surface->linesize * surface->height);
 200
 201         return surface;
 202     }
 203
 204     if (host_format.BitsPerPixel == 16)
 205         do_sdl_resize(width, height, 16);
 206     else
 207         do_sdl_resize(width, height, 32);
 208
 209     surface->pf = sdl_to_qemu_pixelformat(real_screen->format);
 210     surface->linesize = real_screen->pitch;
 211     surface->data = real_screen->pixels;
 212
 213 #ifdef HOST_WORDS_BIGENDIAN
 214     surface->flags = QEMU_REALPIXELS_FLAG | QEMU_BIG_ENDIAN_FLAG;
 215 #else
 216     surface->flags = QEMU_REALPIXELS_FLAG;
 217 #endif
 218     allocator = 1;
 219
 220     return surface;
 221 }
 222
 223 static void sdl_free_displaysurface(DisplaySurface *surface)
 224 {
 225     allocator = 0;
 226     if (surface == NULL)
 227         return;
 228
 229     if (surface->flags & QEMU_ALLOCATED_FLAG)
 230         qemu_free(surface->data);
 231     qemu_free(surface);
 232 }
 233
 234 static DisplaySurface* sdl_resize_displaysurface(DisplaySurface *surface, int width, int height)
 235 {
 236     sdl_free_displaysurface(surface);
 237     return sdl_create_displaysurface(width, height);
 238 }
 239
 240 /* generic keyboard conversion */
 241
 242 #include "sdl_keysym.h"
 243
 244 static kbd_layout_t *kbd_layout = NULL;
 245
 246 static uint8_t sdl_keyevent_to_keycode_generic(const SDL_KeyboardEvent *ev)
 247 {
 248     int keysym;
 249     /* workaround for X11+SDL bug with AltGR */
 250     keysym = ev->keysym.sym;
 251     if (keysym == 0 && ev->keysym.scancode == 113)
 252         keysym = SDLK_MODE;
 253     /* For Japanese key '\' and '|' */
 254     if (keysym == 92 && ev->keysym.scancode == 133) {
 255         keysym = 0xa5;
 256     }
 257     return keysym2scancode(kbd_layout, keysym) & SCANCODE_KEYMASK;
 258 }
 259
 260 /* specific keyboard conversions from scan codes */
 261
 262 #if defined(_WIN32)
 263
 264 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 265 {
 266     return ev->keysym.scancode;
 267 }
 268
 269 #else
 270
 271 #if defined(SDL_VIDEO_DRIVER_X11)
 272 #include <X11/XKBlib.h>
 273
 274 static int check_for_evdev(void)
 275 {
 276     SDL_SysWMinfo info;
 277     XkbDescPtr desc = NULL;
 278     int has_evdev = 0;
 279     char *keycodes = NULL;
 280
 281     SDL_VERSION(&info.version);
 282     if (!SDL_GetWMInfo(&info)) {
 283         return 0;
 284     }
 285     desc = XkbGetKeyboard(info.info.x11.display,
 286                           XkbGBN_AllComponentsMask,
 287                           XkbUseCoreKbd);
 288     if (desc && desc->names) {
 289         keycodes = XGetAtomName(info.info.x11.display, desc->names->keycodes);
 290         if (keycodes == NULL) {
 291             fprintf(stderr, "could not lookup keycode name\n");
 292         } else if (strstart(keycodes, "evdev", NULL)) {
 293             has_evdev = 1;
 294         } else if (!strstart(keycodes, "xfree86", NULL)) {
 295             fprintf(stderr, "unknown keycodes `%s', please report to "
 296                     "[email protected]\n", keycodes);
 297         }
 298     }
 299
 300     if (desc) {
 301         XkbFreeKeyboard(desc, XkbGBN_AllComponentsMask, True);
 302     }
 303     if (keycodes) {
 304         XFree(keycodes);
 305     }
 306     return has_evdev;
 307 }
 308 #else
 309 static int check_for_evdev(void)
 310 {
 311         return 0;
 312 }
 313 #endif
 314
 315 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 316 {
 317     int keycode;
 318     static int has_evdev = -1;
 319
 320     if (has_evdev == -1)
 321         has_evdev = check_for_evdev();
 322
 323     keycode = ev->keysym.scancode;
 324
 325     if (keycode < 9) {
 326         keycode = 0;
 327     } else if (keycode < 97) {
 328         keycode -= 8; /* just an offset */
 329     } else if (keycode < 158) {
 330         /* use conversion table */
 331         if (has_evdev)
 332             keycode = translate_evdev_keycode(keycode - 97);
 333         else
 334             keycode = translate_xfree86_keycode(keycode - 97);
 335     } else if (keycode == 208) { /* Hiragana_Katakana */
 336         keycode = 0x70;
 337     } else if (keycode == 211) { /* backslash */
 338         keycode = 0x73;
 339     } else {
 340         keycode = 0;
 341     }
 342     return keycode;
 343 }
 344
 345 #endif
 346
 347 static void reset_keys(void)
 348 {
 349     int i;
 350     for(i = 0; i < 256; i++) {
 351         if (modifiers_state[i]) {
 352             if (i & SCANCODE_GREY)
 353                 kbd_put_keycode(SCANCODE_EMUL0);
 354             kbd_put_keycode(i | SCANCODE_UP);
 355             modifiers_state[i] = 0;
 356         }
 357     }
 358 }
 359
 360 static void sdl_process_key(SDL_KeyboardEvent *ev)
 361 {
 362     int keycode, v;
 363
 364     if (ev->keysym.sym == SDLK_PAUSE) {
 365         /* specific case */
 366         v = 0;
 367         if (ev->type == SDL_KEYUP)
 368             v |= SCANCODE_UP;
 369         kbd_put_keycode(0xe1);
 370         kbd_put_keycode(0x1d | v);
 371         kbd_put_keycode(0x45 | v);
 372         return;
 373     }
 374
 375     if (kbd_layout) {
 376         keycode = sdl_keyevent_to_keycode_generic(ev);
 377     } else {
 378         keycode = sdl_keyevent_to_keycode(ev);
 379     }
 380
 381     switch(keycode) {
 382     case 0x00:
 383         /* sent when leaving window: reset the modifiers state */
 384         reset_keys();
 385         return;
 386     case 0x2a:                          /* Left Shift */
 387     case 0x36:                          /* Right Shift */
 388     case 0x1d:                          /* Left CTRL */
 389     case 0x9d:                          /* Right CTRL */
 390     case 0x38:                          /* Left ALT */
 391     case 0xb8:                         /* Right ALT */
 392         if (ev->type == SDL_KEYUP)
 393             modifiers_state[keycode] = 0;
 394         else
 395             modifiers_state[keycode] = 1;
 396         break;
 397     case 0x45: /* num lock */
 398     case 0x3a: /* caps lock */
 399         /* SDL does not send the key up event, so we generate it */
 400         kbd_put_keycode(keycode);
 401         kbd_put_keycode(keycode | SCANCODE_UP);
 402         return;
 403     }
 404
 405     /* now send the key code */
 406     if (keycode & SCANCODE_GREY)
 407         kbd_put_keycode(SCANCODE_EMUL0);
 408     if (ev->type == SDL_KEYUP)
 409         kbd_put_keycode(keycode | SCANCODE_UP);
 410     else
 411         kbd_put_keycode(keycode & SCANCODE_KEYCODEMASK);
 412 }
 413
 414 static void sdl_update_caption(void)
 415 {
 416     char win_title[1024];
 417     char icon_title[1024];
 418     const char *status = "";
 419
 420     if (!vm_running)
 421         status = " [Stopped]";
 422     else if (gui_grab) {
 423         if (alt_grab)
 424             status = " - Press Ctrl-Alt-Shift to exit mouse grab";
 425         else if (ctrl_grab)
 426             status = " - Press Right-Ctrl to exit mouse grab";
 427         else
 428             status = " - Press Ctrl-Alt to exit mouse grab";
 429     }
 430
 431     if (qemu_name) {
 432         snprintf(win_title, sizeof(win_title), "QEMU (%s)%s", qemu_name, status);
 433         snprintf(icon_title, sizeof(icon_title), "QEMU (%s)", qemu_name);
 434     } else {
 435         snprintf(win_title, sizeof(win_title), "QEMU%s", status);
 436         snprintf(icon_title, sizeof(icon_title), "QEMU");
 437     }
 438
 439     SDL_WM_SetCaption(win_title, icon_title);
 440 }
 441
 442 static void sdl_hide_cursor(void)
 443 {
 444     if (!cursor_hide)
 445         return;
 446
 447     if (kbd_mouse_is_absolute()) {
 448         SDL_ShowCursor(1);
 449         SDL_SetCursor(sdl_cursor_hidden);
 450     } else {
 451         SDL_ShowCursor(0);
 452     }
 453 }
 454
 455 static void sdl_show_cursor(void)
 456 {
 457     if (!cursor_hide)
 458         return;
 459
 460     if (!kbd_mouse_is_absolute()) {
 461         SDL_ShowCursor(1);
 462         if (guest_cursor &&
 463                 (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
 464             SDL_SetCursor(guest_sprite);
 465         else
 466             SDL_SetCursor(sdl_cursor_normal);
 467     }
 468 }
 469
 470 static void sdl_grab_start(void)
 471 {
 472     if (guest_cursor) {
 473         SDL_SetCursor(guest_sprite);
 474         if (!kbd_mouse_is_absolute() && !absolute_enabled)
 475             SDL_WarpMouse(guest_x, guest_y);
 476     } else
 477         sdl_hide_cursor();
 478
 479     if (SDL_WM_GrabInput(SDL_GRAB_ON) == SDL_GRAB_ON) {
 480         gui_grab = 1;
 481         sdl_update_caption();
 482     } else
 483         sdl_show_cursor();
 484 }
 485
 486 static void sdl_grab_end(void)
 487 {
 488     SDL_WM_GrabInput(SDL_GRAB_OFF);
 489     gui_grab = 0;
 490     sdl_show_cursor();
 491     sdl_update_caption();
 492 }
 493
 494 static void sdl_mouse_mode_change(Notifier *notify)
 495 {
 496     if (kbd_mouse_is_absolute()) {
 497         if (!absolute_enabled) {
 498             sdl_hide_cursor();
 499             if (gui_grab) {
 500                 sdl_grab_end();
 501             }
 502             absolute_enabled = 1;
 503         }
 504     } else if (absolute_enabled) {
 505         sdl_show_cursor();
 506         absolute_enabled = 0;
 507     }
 508 }
 509
 510 static void sdl_send_mouse_event(int dx, int dy, int dz, int x, int y, int state)
 511 {
 512     int buttons;
 513     buttons = 0;
 514     if (state & SDL_BUTTON(SDL_BUTTON_LEFT))
 515         buttons |= MOUSE_EVENT_LBUTTON;
 516     if (state & SDL_BUTTON(SDL_BUTTON_RIGHT))
 517         buttons |= MOUSE_EVENT_RBUTTON;
 518     if (state & SDL_BUTTON(SDL_BUTTON_MIDDLE))
 519         buttons |= MOUSE_EVENT_MBUTTON;
 520
 521     if (kbd_mouse_is_absolute()) {
 522        dx = x * 0x7FFF / (width - 1);
 523        dy = y * 0x7FFF / (height - 1);
 524     } else if (guest_cursor) {
 525         x -= guest_x;
 526         y -= guest_y;
 527         guest_x += x;
 528         guest_y += y;
 529         dx = x;
 530         dy = y;
 531     }
 532
 533     kbd_mouse_event(dx, dy, dz, buttons);
 534 }
 535
 536 static void toggle_full_screen(DisplayState *ds)
 537 {
 538     gui_fullscreen = !gui_fullscreen;
 539     do_sdl_resize(real_screen->w, real_screen->h, real_screen->format->BitsPerPixel);
 540     if (gui_fullscreen) {
 541         scaling_active = 0;
 542         gui_saved_grab = gui_grab;
 543         sdl_grab_start();
 544     } else {
 545         if (!gui_saved_grab)
 546             sdl_grab_end();
 547     }
 548     vga_hw_invalidate();
 549     vga_hw_update();
 550 }
 551
 552 static void sdl_refresh(DisplayState *ds)
 553 {
 554     SDL_Event ev1, *ev = &ev1;
 555     int mod_state;
 556     int buttonstate = SDL_GetMouseState(NULL, NULL);
 557
 558     if (last_vm_running != vm_running) {
 559         last_vm_running = vm_running;
 560         sdl_update_caption();
 561     }
 562
 563     vga_hw_update();
 564     SDL_EnableUNICODE(!is_graphic_console());
 565
 566     while (SDL_PollEvent(ev)) {
 567         switch (ev->type) {
 568         case SDL_VIDEOEXPOSE:
 569             sdl_update(ds, 0, 0, real_screen->w, real_screen->h);
 570             break;
 571         case SDL_KEYDOWN:
 572         case SDL_KEYUP:
 573             if (ev->type == SDL_KEYDOWN) {
 574                 if (alt_grab) {
 575                     mod_state = (SDL_GetModState() & (gui_grab_code | KMOD_LSHIFT)) ==
 576                                 (gui_grab_code | KMOD_LSHIFT);
 577                 } else if (ctrl_grab) {
 578                     mod_state = (SDL_GetModState() & KMOD_RCTRL) == KMOD_RCTRL;
 579                 } else {
 580                     mod_state = (SDL_GetModState() & gui_grab_code) ==
 581                                 gui_grab_code;
 582                 }
 583                 gui_key_modifier_pressed = mod_state;
 584                 if (gui_key_modifier_pressed) {
 585                     int keycode;
 586                     keycode = sdl_keyevent_to_keycode(&ev->key);
 587                     switch(keycode) {
 588                     case 0x21: /* 'f' key on US keyboard */
 589                         toggle_full_screen(ds);
 590                         gui_keysym = 1;
 591                         break;
 592                     case 0x16: /* 'u' key on US keyboard */
 593                         scaling_active = 0;
 594                         sdl_resize(ds);
 595                         vga_hw_invalidate();
 596                         vga_hw_update();
 597                         break;
 598                     case 0x02 ... 0x0a: /* '1' to '9' keys */
 599                         /* Reset the modifiers sent to the current console */
 600                         reset_keys();
 601                         console_select(keycode - 0x02);
 602                         if (!is_graphic_console()) {
 603                             /* display grab if going to a text console */
 604                             if (gui_grab)
 605                                 sdl_grab_end();
 606                         }
 607                         gui_keysym = 1;
 608                         break;
 609                     default:
 610                         break;
 611                     }
 612                 } else if (!is_graphic_console()) {
 613                     int keysym;
 614                     keysym = 0;
 615                     if (ev->key.keysym.mod & (KMOD_LCTRL | KMOD_RCTRL)) {
 616                         switch(ev->key.keysym.sym) {
 617                         case SDLK_UP: keysym = QEMU_KEY_CTRL_UP; break;
 618                         case SDLK_DOWN: keysym = QEMU_KEY_CTRL_DOWN; break;
 619                         case SDLK_LEFT: keysym = QEMU_KEY_CTRL_LEFT; break;
 620                         case SDLK_RIGHT: keysym = QEMU_KEY_CTRL_RIGHT; break;
 621                         case SDLK_HOME: keysym = QEMU_KEY_CTRL_HOME; break;
 622                         case SDLK_END: keysym = QEMU_KEY_CTRL_END; break;
 623                         case SDLK_PAGEUP: keysym = QEMU_KEY_CTRL_PAGEUP; break;
 624                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_CTRL_PAGEDOWN; break;
 625                         default: break;
 626                         }
 627                     } else {
 628                         switch(ev->key.keysym.sym) {
 629                         case SDLK_UP: keysym = QEMU_KEY_UP; break;
 630                         case SDLK_DOWN: keysym = QEMU_KEY_DOWN; break;
 631                         case SDLK_LEFT: keysym = QEMU_KEY_LEFT; break;
 632                         case SDLK_RIGHT: keysym = QEMU_KEY_RIGHT; break;
 633                         case SDLK_HOME: keysym = QEMU_KEY_HOME; break;
 634                         case SDLK_END: keysym = QEMU_KEY_END; break;
 635                         case SDLK_PAGEUP: keysym = QEMU_KEY_PAGEUP; break;
 636                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_PAGEDOWN; break;
 637                         case SDLK_BACKSPACE: keysym = QEMU_KEY_BACKSPACE; break;
 638                         case SDLK_DELETE: keysym = QEMU_KEY_DELETE; break;
 639                         default: break;
 640                         }
 641                     }
 642                     if (keysym) {
 643                         kbd_put_keysym(keysym);
 644                     } else if (ev->key.keysym.unicode != 0) {
 645                         kbd_put_keysym(ev->key.keysym.unicode);
 646                     }
 647                 }
 648             } else if (ev->type == SDL_KEYUP) {
 649                 if (!alt_grab) {
 650                     mod_state = (ev->key.keysym.mod & gui_grab_code);
 651                 } else {
 652                     mod_state = (ev->key.keysym.mod &
 653                                  (gui_grab_code | KMOD_LSHIFT));
 654                 }
 655                 if (!mod_state) {
 656                     if (gui_key_modifier_pressed) {
 657                         gui_key_modifier_pressed = 0;
 658                         if (gui_keysym == 0) {
 659                             /* exit/enter grab if pressing Ctrl-Alt */
 660                             if (!gui_grab) {
 661                                 /* if the application is not active,
 662                                    do not try to enter grab state. It
 663                                    prevents
 664                                    'SDL_WM_GrabInput(SDL_GRAB_ON)'
 665                                    from blocking all the application
 666                                    (SDL bug). */
 667                                 if (SDL_GetAppState() & SDL_APPACTIVE)
 668                                     sdl_grab_start();
 669                             } else {
 670                                 sdl_grab_end();
 671                             }
 672                             /* SDL does not send back all the
 673                                modifiers key, so we must correct it */
 674                             reset_keys();
 675                             break;
 676                         }
 677                         gui_keysym = 0;
 678                     }
 679                 }
 680             }
 681             if (is_graphic_console() && !gui_keysym)
 682                 sdl_process_key(&ev->key);
 683             break;
 684         case SDL_QUIT:
 685             if (!no_quit)
 686                 qemu_system_shutdown_request();
 687             break;
 688         case SDL_MOUSEMOTION:
 689             if (gui_grab || kbd_mouse_is_absolute() ||
 690                 absolute_enabled) {
 691                 sdl_send_mouse_event(ev->motion.xrel, ev->motion.yrel, 0,
 692                        ev->motion.x, ev->motion.y, ev->motion.state);
 693             }
 694             break;
 695         case SDL_MOUSEBUTTONDOWN:
 696         case SDL_MOUSEBUTTONUP:
 697             {
 698                 SDL_MouseButtonEvent *bev = &ev->button;
 699                 if (!gui_grab && !kbd_mouse_is_absolute()) {
 700                     if (ev->type == SDL_MOUSEBUTTONDOWN &&
 701                         (bev->button == SDL_BUTTON_LEFT)) {
 702                         /* start grabbing all events */
 703                         sdl_grab_start();
 704                     }
 705                 } else {
 706                     int dz;
 707                     dz = 0;
 708                     if (ev->type == SDL_MOUSEBUTTONDOWN) {
 709                         buttonstate |= SDL_BUTTON(bev->button);
 710                     } else {
 711                         buttonstate &= ~SDL_BUTTON(bev->button);
 712                     }
 713 #ifdef SDL_BUTTON_WHEELUP
 714                     if (bev->button == SDL_BUTTON_WHEELUP && ev->type == SDL_MOUSEBUTTONDOWN) {
 715                         dz = -1;
 716                     } else if (bev->button == SDL_BUTTON_WHEELDOWN && ev->type == SDL_MOUSEBUTTONDOWN) {
 717                         dz = 1;
 718                     }
 719 #endif
 720                     sdl_send_mouse_event(0, 0, dz, bev->x, bev->y, buttonstate);
 721                 }
 722             }
 723             break;
 724         case SDL_ACTIVEEVENT:
 725             if (gui_grab && ev->active.state == SDL_APPINPUTFOCUS &&
 726                 !ev->active.gain && !gui_fullscreen_initial_grab) {
 727                 sdl_grab_end();
 728             }
 729             if (ev->active.state & SDL_APPACTIVE) {
 730                 if (ev->active.gain) {
 731                     /* Back to default interval */
 732                     dcl->gui_timer_interval = 0;
 733                     dcl->idle = 0;
 734                 } else {
 735                     /* Sleeping interval */
 736                     dcl->gui_timer_interval = 500;
 737                     dcl->idle = 1;
 738                 }
 739             }
 740             break;
 741         case SDL_VIDEORESIZE:
 742         {
 743             SDL_ResizeEvent *rev = &ev->resize;
 744             int bpp = real_screen->format->BitsPerPixel;
 745             if (bpp != 16 && bpp != 32)
 746                 bpp = 32;
 747             do_sdl_resize(rev->w, rev->h, bpp);
 748             scaling_active = 1;
 749             if (!is_buffer_shared(ds->surface)) {
 750                 ds->surface = qemu_resize_displaysurface(ds, ds_get_width(ds), ds_get_height(ds));
 751                 dpy_resize(ds);
 752             }
 753             vga_hw_invalidate();
 754             vga_hw_update();
 755             break;
 756         }
 757         default:
 758             break;
 759         }
 760     }
 761 }
 762
 763 static void sdl_fill(DisplayState *ds, int x, int y, int w, int h, uint32_t c)
 764 {
 765     SDL_Rect dst = { x, y, w, h };
 766     SDL_FillRect(real_screen, &dst, c);
 767 }
 768
 769 static void sdl_mouse_warp(int x, int y, int on)
 770 {
 771     if (on) {
 772         if (!guest_cursor)
 773             sdl_show_cursor();
 774         if (gui_grab || kbd_mouse_is_absolute() || absolute_enabled) {
 775             SDL_SetCursor(guest_sprite);
 776             if (!kbd_mouse_is_absolute() && !absolute_enabled)
 777                 SDL_WarpMouse(x, y);
 778         }
 779     } else if (gui_grab)
 780         sdl_hide_cursor();
 781     guest_cursor = on;
 782     guest_x = x, guest_y = y;
 783 }
 784
 785 static void sdl_mouse_define(QEMUCursor *c)
 786 {
 787     uint8_t *image, *mask;
 788     int bpl;
 789
 790     if (guest_sprite)
 791         SDL_FreeCursor(guest_sprite);
 792
 793     bpl = cursor_get_mono_bpl(c);
 794     image = qemu_mallocz(bpl * c->height);
 795     mask  = qemu_mallocz(bpl * c->height);
 796     cursor_get_mono_image(c, 0x000000, image);
 797     cursor_get_mono_mask(c, 0, mask);
 798     guest_sprite = SDL_CreateCursor(image, mask, c->width, c->height,
 799                                     c->hot_x, c->hot_y);
 800     qemu_free(image);
 801     qemu_free(mask);
 802
 803     if (guest_cursor &&
 804             (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
 805         SDL_SetCursor(guest_sprite);
 806 }
 807
 808 static void sdl_cleanup(void)
 809 {
 810     if (guest_sprite)
 811         SDL_FreeCursor(guest_sprite);
 812     SDL_QuitSubSystem(SDL_INIT_VIDEO);
 813 }
 814
 815 void sdl_display_init(DisplayState *ds, int full_screen, int no_frame)
 816 {
 817     int flags;
 818     uint8_t data = 0;
 819     DisplayAllocator *da;
 820     const SDL_VideoInfo *vi;
 821
 822 #if defined(__APPLE__)
 823     /* always use generic keymaps */
 824     if (!keyboard_layout)
 825         keyboard_layout = "en-us";
 826 #endif
 827     if(keyboard_layout) {
 828         kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
 829         if (!kbd_layout)
 830             exit(1);
 831     }
 832
 833     if (no_frame)
 834         gui_noframe = 1;
 835
 836     if (!full_screen) {
 837         setenv("SDL_VIDEO_ALLOW_SCREENSAVER", "1", 0);
 838     }
 839
 840     flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
 841     if (SDL_Init (flags)) {
 842         fprintf(stderr, "Could not initialize SDL(%s) - exiting\n",
 843                 SDL_GetError());
 844         exit(1);
 845     }
 846     vi = SDL_GetVideoInfo();
 847     host_format = *(vi->vfmt);
 848
 849     dcl = qemu_mallocz(sizeof(DisplayChangeListener));
 850     dcl->dpy_update = sdl_update;
 851     dcl->dpy_resize = sdl_resize;
 852     dcl->dpy_refresh = sdl_refresh;
 853     dcl->dpy_setdata = sdl_setdata;
 854     dcl->dpy_fill = sdl_fill;
 855     ds->mouse_set = sdl_mouse_warp;
 856     ds->cursor_define = sdl_mouse_define;
 857     register_displaychangelistener(ds, dcl);
 858
 859     da = qemu_mallocz(sizeof(DisplayAllocator));
 860     da->create_displaysurface = sdl_create_displaysurface;
 861     da->resize_displaysurface = sdl_resize_displaysurface;
 862     da->free_displaysurface = sdl_free_displaysurface;
 863     if (register_displayallocator(ds, da) == da) {
 864         dpy_resize(ds);
 865     }
 866
 867     mouse_mode_notifier.notify = sdl_mouse_mode_change;
 868     qemu_add_mouse_mode_change_notifier(&mouse_mode_notifier);
 869
 870     sdl_update_caption();
 871     SDL_EnableKeyRepeat(250, 50);
 872     gui_grab = 0;
 873
 874     sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
 875     sdl_cursor_normal = SDL_GetCursor();
 876
 877     atexit(sdl_cleanup);
 878     if (full_screen) {
 879         gui_fullscreen = 1;
 880         gui_fullscreen_initial_grab = 1;
 881         sdl_grab_start();
 882     }
 883 }