ui/sdl.c

   1 /*
   2  * QEMU SDL display driver
   3  *
   4  * Copyright (c) 2003 Fabrice Bellard
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24
  25 /* Avoid compiler warning because macro is redefined in SDL_syswm.h. */
  26 #undef WIN32_LEAN_AND_MEAN
  27
  28 #include <SDL.h>
  29 #include <SDL_syswm.h>
  30
  31 #include "qemu-common.h"
  32 #include "console.h"
  33 #include "sysemu.h"
  34 #include "x_keymap.h"
  35 #include "sdl_zoom.h"
  36
  37 static DisplayChangeListener *dcl;
  38 static SDL_Surface *real_screen;
  39 static SDL_Surface *guest_screen = NULL;
  40 static int gui_grab; /* if true, all keyboard/mouse events are grabbed */
  41 static int last_vm_running;
  42 static bool gui_saved_scaling;
  43 static int gui_saved_width;
  44 static int gui_saved_height;
  45 static int gui_saved_grab;
  46 static int gui_fullscreen;
  47 static int gui_noframe;
  48 static int gui_key_modifier_pressed;
  49 static int gui_keysym;
  50 static int gui_grab_code = KMOD_LALT | KMOD_LCTRL;
  51 static uint8_t modifiers_state[256];
  52 static int width, height;
  53 static SDL_Cursor *sdl_cursor_normal;
  54 static SDL_Cursor *sdl_cursor_hidden;
  55 static int absolute_enabled = 0;
  56 static int guest_cursor = 0;
  57 static int guest_x, guest_y;
  58 static SDL_Cursor *guest_sprite = NULL;
  59 static uint8_t allocator;
  60 static SDL_PixelFormat host_format;
  61 static int scaling_active = 0;
  62 static Notifier mouse_mode_notifier;
  63
  64 static void sdl_update(DisplayState *ds, int x, int y, int w, int h)
  65 {
  66     //    printf("updating x=%d y=%d w=%d h=%d\n", x, y, w, h);
  67     SDL_Rect rec;
  68     rec.x = x;
  69     rec.y = y;
  70     rec.w = w;
  71     rec.h = h;
  72
  73     if (guest_screen) {
  74         if (!scaling_active) {
  75             SDL_BlitSurface(guest_screen, &rec, real_screen, &rec);
  76         } else {
  77             if (sdl_zoom_blit(guest_screen, real_screen, SMOOTHING_ON, &rec) < 0) {
  78                 fprintf(stderr, "Zoom blit failed\n");
  79                 exit(1);
  80             }
  81         }
  82     }
  83     SDL_UpdateRect(real_screen, rec.x, rec.y, rec.w, rec.h);
  84 }
  85
  86 static void sdl_setdata(DisplayState *ds)
  87 {
  88     if (guest_screen != NULL) SDL_FreeSurface(guest_screen);
  89
  90     guest_screen = SDL_CreateRGBSurfaceFrom(ds_get_data(ds), ds_get_width(ds), ds_get_height(ds),
  91                                             ds_get_bits_per_pixel(ds), ds_get_linesize(ds),
  92                                             ds->surface->pf.rmask, ds->surface->pf.gmask,
  93                                             ds->surface->pf.bmask, ds->surface->pf.amask);
  94 }
  95
  96 static void do_sdl_resize(int new_width, int new_height, int bpp)
  97 {
  98     int flags;
  99
 100     //    printf("resizing to %d %d\n", w, h);
 101
 102     flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
 103     if (gui_fullscreen) {
 104         flags |= SDL_FULLSCREEN;
 105     } else {
 106         flags |= SDL_RESIZABLE;
 107     }
 108     if (gui_noframe)
 109         flags |= SDL_NOFRAME;
 110
 111     width = new_width;
 112     height = new_height;
 113     real_screen = SDL_SetVideoMode(width, height, bpp, flags);
 114     if (!real_screen) {
 115         fprintf(stderr, "Could not open SDL display (%dx%dx%d): %s\n", width,
 116                 height, bpp, SDL_GetError());
 117         exit(1);
 118     }
 119 }
 120
 121 static void sdl_resize(DisplayState *ds)
 122 {
 123     if  (!allocator) {
 124         if (!scaling_active)
 125             do_sdl_resize(ds_get_width(ds), ds_get_height(ds), 0);
 126         else if (real_screen->format->BitsPerPixel != ds_get_bits_per_pixel(ds))
 127             do_sdl_resize(real_screen->w, real_screen->h, ds_get_bits_per_pixel(ds));
 128         sdl_setdata(ds);
 129     } else {
 130         if (guest_screen != NULL) {
 131             SDL_FreeSurface(guest_screen);
 132             guest_screen = NULL;
 133         }
 134     }
 135 }
 136
 137 static PixelFormat sdl_to_qemu_pixelformat(SDL_PixelFormat *sdl_pf)
 138 {
 139     PixelFormat qemu_pf;
 140
 141     memset(&qemu_pf, 0x00, sizeof(PixelFormat));
 142
 143     qemu_pf.bits_per_pixel = sdl_pf->BitsPerPixel;
 144     qemu_pf.bytes_per_pixel = sdl_pf->BytesPerPixel;
 145     qemu_pf.depth = (qemu_pf.bits_per_pixel) == 32 ? 24 : (qemu_pf.bits_per_pixel);
 146
 147     qemu_pf.rmask = sdl_pf->Rmask;
 148     qemu_pf.gmask = sdl_pf->Gmask;
 149     qemu_pf.bmask = sdl_pf->Bmask;
 150     qemu_pf.amask = sdl_pf->Amask;
 151
 152     qemu_pf.rshift = sdl_pf->Rshift;
 153     qemu_pf.gshift = sdl_pf->Gshift;
 154     qemu_pf.bshift = sdl_pf->Bshift;
 155     qemu_pf.ashift = sdl_pf->Ashift;
 156
 157     qemu_pf.rbits = 8 - sdl_pf->Rloss;
 158     qemu_pf.gbits = 8 - sdl_pf->Gloss;
 159     qemu_pf.bbits = 8 - sdl_pf->Bloss;
 160     qemu_pf.abits = 8 - sdl_pf->Aloss;
 161
 162     qemu_pf.rmax = ((1 << qemu_pf.rbits) - 1);
 163     qemu_pf.gmax = ((1 << qemu_pf.gbits) - 1);
 164     qemu_pf.bmax = ((1 << qemu_pf.bbits) - 1);
 165     qemu_pf.amax = ((1 << qemu_pf.abits) - 1);
 166
 167     return qemu_pf;
 168 }
 169
 170 static DisplaySurface* sdl_create_displaysurface(int width, int height)
 171 {
 172     DisplaySurface *surface = (DisplaySurface*) qemu_mallocz(sizeof(DisplaySurface));
 173     if (surface == NULL) {
 174         fprintf(stderr, "sdl_create_displaysurface: malloc failed\n");
 175         exit(1);
 176     }
 177
 178     surface->width = width;
 179     surface->height = height;
 180
 181     if (scaling_active) {
 182         int linesize;
 183         PixelFormat pf;
 184         if (host_format.BytesPerPixel != 2 && host_format.BytesPerPixel != 4) {
 185             linesize = width * 4;
 186             pf = qemu_default_pixelformat(32);
 187         } else {
 188             linesize = width * host_format.BytesPerPixel;
 189             pf = sdl_to_qemu_pixelformat(&host_format);
 190         }
 191         qemu_alloc_display(surface, width, height, linesize, pf, 0);
 192         return surface;
 193     }
 194
 195     if (host_format.BitsPerPixel == 16)
 196         do_sdl_resize(width, height, 16);
 197     else
 198         do_sdl_resize(width, height, 32);
 199
 200     surface->pf = sdl_to_qemu_pixelformat(real_screen->format);
 201     surface->linesize = real_screen->pitch;
 202     surface->data = real_screen->pixels;
 203
 204 #ifdef HOST_WORDS_BIGENDIAN
 205     surface->flags = QEMU_REALPIXELS_FLAG | QEMU_BIG_ENDIAN_FLAG;
 206 #else
 207     surface->flags = QEMU_REALPIXELS_FLAG;
 208 #endif
 209     allocator = 1;
 210
 211     return surface;
 212 }
 213
 214 static void sdl_free_displaysurface(DisplaySurface *surface)
 215 {
 216     allocator = 0;
 217     if (surface == NULL)
 218         return;
 219
 220     if (surface->flags & QEMU_ALLOCATED_FLAG)
 221         qemu_free(surface->data);
 222     qemu_free(surface);
 223 }
 224
 225 static DisplaySurface* sdl_resize_displaysurface(DisplaySurface *surface, int width, int height)
 226 {
 227     sdl_free_displaysurface(surface);
 228     return sdl_create_displaysurface(width, height);
 229 }
 230
 231 /* generic keyboard conversion */
 232
 233 #include "sdl_keysym.h"
 234
 235 static kbd_layout_t *kbd_layout = NULL;
 236
 237 static uint8_t sdl_keyevent_to_keycode_generic(const SDL_KeyboardEvent *ev)
 238 {
 239     int keysym;
 240     /* workaround for X11+SDL bug with AltGR */
 241     keysym = ev->keysym.sym;
 242     if (keysym == 0 && ev->keysym.scancode == 113)
 243         keysym = SDLK_MODE;
 244     /* For Japanese key '\' and '|' */
 245     if (keysym == 92 && ev->keysym.scancode == 133) {
 246         keysym = 0xa5;
 247     }
 248     return keysym2scancode(kbd_layout, keysym) & SCANCODE_KEYMASK;
 249 }
 250
 251 /* specific keyboard conversions from scan codes */
 252
 253 #if defined(_WIN32)
 254
 255 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 256 {
 257     return ev->keysym.scancode;
 258 }
 259
 260 #else
 261
 262 #if defined(SDL_VIDEO_DRIVER_X11)
 263 #include <X11/XKBlib.h>
 264
 265 static int check_for_evdev(void)
 266 {
 267     SDL_SysWMinfo info;
 268     XkbDescPtr desc = NULL;
 269     int has_evdev = 0;
 270     char *keycodes = NULL;
 271
 272     SDL_VERSION(&info.version);
 273     if (!SDL_GetWMInfo(&info)) {
 274         return 0;
 275     }
 276     desc = XkbGetKeyboard(info.info.x11.display,
 277                           XkbGBN_AllComponentsMask,
 278                           XkbUseCoreKbd);
 279     if (desc && desc->names) {
 280         keycodes = XGetAtomName(info.info.x11.display, desc->names->keycodes);
 281         if (keycodes == NULL) {
 282             fprintf(stderr, "could not lookup keycode name\n");
 283         } else if (strstart(keycodes, "evdev", NULL)) {
 284             has_evdev = 1;
 285         } else if (!strstart(keycodes, "xfree86", NULL)) {
 286             fprintf(stderr, "unknown keycodes `%s', please report to "
 287                     "qemu-devel@nongnu.org\n", keycodes);
 288         }
 289     }
 290
 291     if (desc) {
 292         XkbFreeKeyboard(desc, XkbGBN_AllComponentsMask, True);
 293     }
 294     if (keycodes) {
 295         XFree(keycodes);
 296     }
 297     return has_evdev;
 298 }
 299 #else
 300 static int check_for_evdev(void)
 301 {
 302         return 0;
 303 }
 304 #endif
 305
 306 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 307 {
 308     int keycode;
 309     static int has_evdev = -1;
 310
 311     if (has_evdev == -1)
 312         has_evdev = check_for_evdev();
 313
 314     keycode = ev->keysym.scancode;
 315
 316     if (keycode < 9) {
 317         keycode = 0;
 318     } else if (keycode < 97) {
 319         keycode -= 8; /* just an offset */
 320     } else if (keycode < 158) {
 321         /* use conversion table */
 322         if (has_evdev)
 323             keycode = translate_evdev_keycode(keycode - 97);
 324         else
 325             keycode = translate_xfree86_keycode(keycode - 97);
 326     } else if (keycode == 208) { /* Hiragana_Katakana */
 327         keycode = 0x70;
 328     } else if (keycode == 211) { /* backslash */
 329         keycode = 0x73;
 330     } else {
 331         keycode = 0;
 332     }
 333     return keycode;
 334 }
 335
 336 #endif
 337
 338 static void reset_keys(void)
 339 {
 340     int i;
 341     for(i = 0; i < 256; i++) {
 342         if (modifiers_state[i]) {
 343             if (i & SCANCODE_GREY)
 344                 kbd_put_keycode(SCANCODE_EMUL0);
 345             kbd_put_keycode(i | SCANCODE_UP);
 346             modifiers_state[i] = 0;
 347         }
 348     }
 349 }
 350
 351 static void sdl_process_key(SDL_KeyboardEvent *ev)
 352 {
 353     int keycode, v;
 354
 355     if (ev->keysym.sym == SDLK_PAUSE) {
 356         /* specific case */
 357         v = 0;
 358         if (ev->type == SDL_KEYUP)
 359             v |= SCANCODE_UP;
 360         kbd_put_keycode(0xe1);
 361         kbd_put_keycode(0x1d | v);
 362         kbd_put_keycode(0x45 | v);
 363         return;
 364     }
 365
 366     if (kbd_layout) {
 367         keycode = sdl_keyevent_to_keycode_generic(ev);
 368     } else {
 369         keycode = sdl_keyevent_to_keycode(ev);
 370     }
 371
 372     switch(keycode) {
 373     case 0x00:
 374         /* sent when leaving window: reset the modifiers state */
 375         reset_keys();
 376         return;
 377     case 0x2a:                          /* Left Shift */
 378     case 0x36:                          /* Right Shift */
 379     case 0x1d:                          /* Left CTRL */
 380     case 0x9d:                          /* Right CTRL */
 381     case 0x38:                          /* Left ALT */
 382     case 0xb8:                         /* Right ALT */
 383         if (ev->type == SDL_KEYUP)
 384             modifiers_state[keycode] = 0;
 385         else
 386             modifiers_state[keycode] = 1;
 387         break;
 388 #define QEMU_SDL_VERSION ((SDL_MAJOR_VERSION << 8) + SDL_MINOR_VERSION)
 389 #if QEMU_SDL_VERSION < 0x102 || QEMU_SDL_VERSION == 0x102 && SDL_PATCHLEVEL < 14
 390         /* SDL versions before 1.2.14 don't support key up for caps/num lock. */
 391     case 0x45: /* num lock */
 392     case 0x3a: /* caps lock */
 393         /* SDL does not send the key up event, so we generate it */
 394         kbd_put_keycode(keycode);
 395         kbd_put_keycode(keycode | SCANCODE_UP);
 396         return;
 397 #endif
 398     }
 399
 400     /* now send the key code */
 401     if (keycode & SCANCODE_GREY)
 402         kbd_put_keycode(SCANCODE_EMUL0);
 403     if (ev->type == SDL_KEYUP)
 404         kbd_put_keycode(keycode | SCANCODE_UP);
 405     else
 406         kbd_put_keycode(keycode & SCANCODE_KEYCODEMASK);
 407 }
 408
 409 static void sdl_update_caption(void)
 410 {
 411     char win_title[1024];
 412     char icon_title[1024];
 413     const char *status = "";
 414
 415     if (!vm_running)
 416         status = " [Stopped]";
 417     else if (gui_grab) {
 418         if (alt_grab)
 419             status = " - Press Ctrl-Alt-Shift to exit mouse grab";
 420         else if (ctrl_grab)
 421             status = " - Press Right-Ctrl to exit mouse grab";
 422         else
 423             status = " - Press Ctrl-Alt to exit mouse grab";
 424     }
 425
 426     if (qemu_name) {
 427         snprintf(win_title, sizeof(win_title), "QEMU (%s)%s", qemu_name, status);
 428         snprintf(icon_title, sizeof(icon_title), "QEMU (%s)", qemu_name);
 429     } else {
 430         snprintf(win_title, sizeof(win_title), "QEMU%s", status);
 431         snprintf(icon_title, sizeof(icon_title), "QEMU");
 432     }
 433
 434     SDL_WM_SetCaption(win_title, icon_title);
 435 }
 436
 437 static void sdl_hide_cursor(void)
 438 {
 439     if (!cursor_hide)
 440         return;
 441
 442     if (kbd_mouse_is_absolute()) {
 443         SDL_ShowCursor(1);
 444         SDL_SetCursor(sdl_cursor_hidden);
 445     } else {
 446         SDL_ShowCursor(0);
 447     }
 448 }
 449
 450 static void sdl_show_cursor(void)
 451 {
 452     if (!cursor_hide)
 453         return;
 454
 455     if (!kbd_mouse_is_absolute() || !is_graphic_console()) {
 456         SDL_ShowCursor(1);
 457         if (guest_cursor &&
 458                 (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
 459             SDL_SetCursor(guest_sprite);
 460         else
 461             SDL_SetCursor(sdl_cursor_normal);
 462     }
 463 }
 464
 465 static void sdl_grab_start(void)
 466 {
 467     if (guest_cursor) {
 468         SDL_SetCursor(guest_sprite);
 469         if (!kbd_mouse_is_absolute() && !absolute_enabled)
 470             SDL_WarpMouse(guest_x, guest_y);
 471     } else
 472         sdl_hide_cursor();
 473
 474     if (SDL_WM_GrabInput(SDL_GRAB_ON) == SDL_GRAB_ON) {
 475         gui_grab = 1;
 476         sdl_update_caption();
 477     } else
 478         sdl_show_cursor();
 479 }
 480
 481 static void sdl_grab_end(void)
 482 {
 483     SDL_WM_GrabInput(SDL_GRAB_OFF);
 484     gui_grab = 0;
 485     sdl_show_cursor();
 486     sdl_update_caption();
 487 }
 488
 489 static void sdl_mouse_mode_change(Notifier *notify, void *data)
 490 {
 491     if (kbd_mouse_is_absolute()) {
 492         if (!absolute_enabled) {
 493             sdl_hide_cursor();
 494             if (gui_grab) {
 495                 sdl_grab_end();
 496             }
 497             absolute_enabled = 1;
 498         }
 499     } else if (absolute_enabled) {
 500         sdl_show_cursor();
 501         absolute_enabled = 0;
 502     }
 503 }
 504
 505 static void sdl_send_mouse_event(int dx, int dy, int dz, int x, int y, int state)
 506 {
 507     int buttons;
 508     buttons = 0;
 509     if (state & SDL_BUTTON(SDL_BUTTON_LEFT))
 510         buttons |= MOUSE_EVENT_LBUTTON;
 511     if (state & SDL_BUTTON(SDL_BUTTON_RIGHT))
 512         buttons |= MOUSE_EVENT_RBUTTON;
 513     if (state & SDL_BUTTON(SDL_BUTTON_MIDDLE))
 514         buttons |= MOUSE_EVENT_MBUTTON;
 515
 516     if (kbd_mouse_is_absolute()) {
 517        dx = x * 0x7FFF / (width - 1);
 518        dy = y * 0x7FFF / (height - 1);
 519     } else if (guest_cursor) {
 520         x -= guest_x;
 521         y -= guest_y;
 522         guest_x += x;
 523         guest_y += y;
 524         dx = x;
 525         dy = y;
 526     }
 527
 528     kbd_mouse_event(dx, dy, dz, buttons);
 529 }
 530
 531 static void sdl_scale(DisplayState *ds, int width, int height)
 532 {
 533     int bpp = real_screen->format->BitsPerPixel;
 534
 535     if (bpp != 16 && bpp != 32) {
 536         bpp = 32;
 537     }
 538     do_sdl_resize(width, height, bpp);
 539     scaling_active = 1;
 540     if (!is_buffer_shared(ds->surface)) {
 541         ds->surface = qemu_resize_displaysurface(ds, ds_get_width(ds),
 542                                                  ds_get_height(ds));
 543         dpy_resize(ds);
 544     }
 545 }
 546
 547 static void toggle_full_screen(DisplayState *ds)
 548 {
 549     gui_fullscreen = !gui_fullscreen;
 550     if (gui_fullscreen) {
 551         gui_saved_width = real_screen->w;
 552         gui_saved_height = real_screen->h;
 553         gui_saved_scaling = scaling_active;
 554
 555         do_sdl_resize(ds_get_width(ds), ds_get_height(ds),
 556                       ds_get_bits_per_pixel(ds));
 557         scaling_active = 0;
 558
 559         gui_saved_grab = gui_grab;
 560         sdl_grab_start();
 561     } else {
 562         if (gui_saved_scaling) {
 563             sdl_scale(ds, gui_saved_width, gui_saved_height);
 564         } else {
 565             do_sdl_resize(ds_get_width(ds), ds_get_height(ds), 0);
 566         }
 567         if (!gui_saved_grab || !is_graphic_console()) {
 568             sdl_grab_end();
 569         }
 570     }
 571     vga_hw_invalidate();
 572     vga_hw_update();
 573 }
 574
 575 static void sdl_refresh(DisplayState *ds)
 576 {
 577     SDL_Event ev1, *ev = &ev1;
 578     int mod_state;
 579     int buttonstate = SDL_GetMouseState(NULL, NULL);
 580
 581     if (last_vm_running != vm_running) {
 582         last_vm_running = vm_running;
 583         sdl_update_caption();
 584     }
 585
 586     vga_hw_update();
 587     SDL_EnableUNICODE(!is_graphic_console());
 588
 589     while (SDL_PollEvent(ev)) {
 590         switch (ev->type) {
 591         case SDL_VIDEOEXPOSE:
 592             sdl_update(ds, 0, 0, real_screen->w, real_screen->h);
 593             break;
 594         case SDL_KEYDOWN:
 595         case SDL_KEYUP:
 596             if (ev->type == SDL_KEYDOWN) {
 597                 if (alt_grab) {
 598                     mod_state = (SDL_GetModState() & (gui_grab_code | KMOD_LSHIFT)) ==
 599                                 (gui_grab_code | KMOD_LSHIFT);
 600                 } else if (ctrl_grab) {
 601                     mod_state = (SDL_GetModState() & KMOD_RCTRL) == KMOD_RCTRL;
 602                 } else {
 603                     mod_state = (SDL_GetModState() & gui_grab_code) ==
 604                                 gui_grab_code;
 605                 }
 606                 gui_key_modifier_pressed = mod_state;
 607                 if (gui_key_modifier_pressed) {
 608                     int keycode;
 609                     keycode = sdl_keyevent_to_keycode(&ev->key);
 610                     switch(keycode) {
 611                     case 0x21: /* 'f' key on US keyboard */
 612                         toggle_full_screen(ds);
 613                         gui_keysym = 1;
 614                         break;
 615                     case 0x16: /* 'u' key on US keyboard */
 616                         if (scaling_active) {
 617                             scaling_active = 0;
 618                             sdl_resize(ds);
 619                             vga_hw_invalidate();
 620                             vga_hw_update();
 621                         }
 622                         gui_keysym = 1;
 623                         break;
 624                     case 0x02 ... 0x0a: /* '1' to '9' keys */
 625                         /* Reset the modifiers sent to the current console */
 626                         reset_keys();
 627                         console_select(keycode - 0x02);
 628                         gui_keysym = 1;
 629                         if (gui_fullscreen) {
 630                             break;
 631                         }
 632                         if (!is_graphic_console()) {
 633                             /* release grab if going to a text console */
 634                             if (gui_grab) {
 635                                 sdl_grab_end();
 636                             } else if (absolute_enabled) {
 637                                 sdl_show_cursor();
 638                             }
 639                         } else if (absolute_enabled) {
 640                             sdl_hide_cursor();
 641                         }
 642                         break;
 643                     default:
 644                         break;
 645                     }
 646                 } else if (!is_graphic_console()) {
 647                     int keysym;
 648                     keysym = 0;
 649                     if (ev->key.keysym.mod & (KMOD_LCTRL | KMOD_RCTRL)) {
 650                         switch(ev->key.keysym.sym) {
 651                         case SDLK_UP: keysym = QEMU_KEY_CTRL_UP; break;
 652                         case SDLK_DOWN: keysym = QEMU_KEY_CTRL_DOWN; break;
 653                         case SDLK_LEFT: keysym = QEMU_KEY_CTRL_LEFT; break;
 654                         case SDLK_RIGHT: keysym = QEMU_KEY_CTRL_RIGHT; break;
 655                         case SDLK_HOME: keysym = QEMU_KEY_CTRL_HOME; break;
 656                         case SDLK_END: keysym = QEMU_KEY_CTRL_END; break;
 657                         case SDLK_PAGEUP: keysym = QEMU_KEY_CTRL_PAGEUP; break;
 658                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_CTRL_PAGEDOWN; break;
 659                         default: break;
 660                         }
 661                     } else {
 662                         switch(ev->key.keysym.sym) {
 663                         case SDLK_UP: keysym = QEMU_KEY_UP; break;
 664                         case SDLK_DOWN: keysym = QEMU_KEY_DOWN; break;
 665                         case SDLK_LEFT: keysym = QEMU_KEY_LEFT; break;
 666                         case SDLK_RIGHT: keysym = QEMU_KEY_RIGHT; break;
 667                         case SDLK_HOME: keysym = QEMU_KEY_HOME; break;
 668                         case SDLK_END: keysym = QEMU_KEY_END; break;
 669                         case SDLK_PAGEUP: keysym = QEMU_KEY_PAGEUP; break;
 670                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_PAGEDOWN; break;
 671                         case SDLK_BACKSPACE: keysym = QEMU_KEY_BACKSPACE; break;
 672                         case SDLK_DELETE: keysym = QEMU_KEY_DELETE; break;
 673                         default: break;
 674                         }
 675                     }
 676                     if (keysym) {
 677                         kbd_put_keysym(keysym);
 678                     } else if (ev->key.keysym.unicode != 0) {
 679                         kbd_put_keysym(ev->key.keysym.unicode);
 680                     }
 681                 }
 682             } else if (ev->type == SDL_KEYUP) {
 683                 if (!alt_grab) {
 684                     mod_state = (ev->key.keysym.mod & gui_grab_code);
 685                 } else {
 686                     mod_state = (ev->key.keysym.mod &
 687                                  (gui_grab_code | KMOD_LSHIFT));
 688                 }
 689                 if (!mod_state) {
 690                     if (gui_key_modifier_pressed) {
 691                         gui_key_modifier_pressed = 0;
 692                         if (gui_keysym == 0) {
 693                             /* exit/enter grab if pressing Ctrl-Alt */
 694                             if (!gui_grab) {
 695                                 /* if the application is not active,
 696                                    do not try to enter grab state. It
 697                                    prevents
 698                                    'SDL_WM_GrabInput(SDL_GRAB_ON)'
 699                                    from blocking all the application
 700                                    (SDL bug). */
 701                                 if (is_graphic_console() &&
 702                                     SDL_GetAppState() & SDL_APPACTIVE) {
 703                                     sdl_grab_start();
 704                                 }
 705                             } else if (!gui_fullscreen) {
 706                                 sdl_grab_end();
 707                             }
 708                             /* SDL does not send back all the
 709                                modifiers key, so we must correct it */
 710                             reset_keys();
 711                             break;
 712                         }
 713                         gui_keysym = 0;
 714                     }
 715                 }
 716             }
 717             if (is_graphic_console() && !gui_keysym)
 718                 sdl_process_key(&ev->key);
 719             break;
 720         case SDL_QUIT:
 721             if (!no_quit) {
 722                 no_shutdown = 0;
 723                 qemu_system_shutdown_request();
 724             }
 725             break;
 726         case SDL_MOUSEMOTION:
 727             if (gui_grab || kbd_mouse_is_absolute() ||
 728                 absolute_enabled) {
 729                 sdl_send_mouse_event(ev->motion.xrel, ev->motion.yrel, 0,
 730                        ev->motion.x, ev->motion.y, ev->motion.state);
 731             }
 732             break;
 733         case SDL_MOUSEBUTTONDOWN:
 734         case SDL_MOUSEBUTTONUP:
 735             if (is_graphic_console()) {
 736                 SDL_MouseButtonEvent *bev = &ev->button;
 737                 if (!gui_grab && !kbd_mouse_is_absolute()) {
 738                     if (ev->type == SDL_MOUSEBUTTONDOWN &&
 739                         (bev->button == SDL_BUTTON_LEFT)) {
 740                         /* start grabbing all events */
 741                         sdl_grab_start();
 742                     }
 743                 } else {
 744                     int dz;
 745                     dz = 0;
 746                     if (ev->type == SDL_MOUSEBUTTONDOWN) {
 747                         buttonstate |= SDL_BUTTON(bev->button);
 748                     } else {
 749                         buttonstate &= ~SDL_BUTTON(bev->button);
 750                     }
 751 #ifdef SDL_BUTTON_WHEELUP
 752                     if (bev->button == SDL_BUTTON_WHEELUP && ev->type == SDL_MOUSEBUTTONDOWN) {
 753                         dz = -1;
 754                     } else if (bev->button == SDL_BUTTON_WHEELDOWN && ev->type == SDL_MOUSEBUTTONDOWN) {
 755                         dz = 1;
 756                     }
 757 #endif
 758                     sdl_send_mouse_event(0, 0, dz, bev->x, bev->y, buttonstate);
 759                 }
 760             }
 761             break;
 762         case SDL_ACTIVEEVENT:
 763             if (gui_grab && ev->active.state == SDL_APPINPUTFOCUS &&
 764                 !ev->active.gain && !gui_fullscreen) {
 765                 sdl_grab_end();
 766             }
 767             if (ev->active.state & SDL_APPACTIVE) {
 768                 if (ev->active.gain) {
 769                     /* Back to default interval */
 770                     dcl->gui_timer_interval = 0;
 771                     dcl->idle = 0;
 772                 } else {
 773                     /* Sleeping interval */
 774                     dcl->gui_timer_interval = 500;
 775                     dcl->idle = 1;
 776                 }
 777             }
 778             break;
 779         case SDL_VIDEORESIZE:
 780             sdl_scale(ds, ev->resize.w, ev->resize.h);
 781             vga_hw_invalidate();
 782             vga_hw_update();
 783             break;
 784         default:
 785             break;
 786         }
 787     }
 788 }
 789
 790 static void sdl_fill(DisplayState *ds, int x, int y, int w, int h, uint32_t c)
 791 {
 792     SDL_Rect dst = { x, y, w, h };
 793     SDL_FillRect(real_screen, &dst, c);
 794 }
 795
 796 static void sdl_mouse_warp(int x, int y, int on)
 797 {
 798     if (on) {
 799         if (!guest_cursor)
 800             sdl_show_cursor();
 801         if (gui_grab || kbd_mouse_is_absolute() || absolute_enabled) {
 802             SDL_SetCursor(guest_sprite);
 803             if (!kbd_mouse_is_absolute() && !absolute_enabled)
 804                 SDL_WarpMouse(x, y);
 805         }
 806     } else if (gui_grab)
 807         sdl_hide_cursor();
 808     guest_cursor = on;
 809     guest_x = x, guest_y = y;
 810 }
 811
 812 static void sdl_mouse_define(QEMUCursor *c)
 813 {
 814     uint8_t *image, *mask;
 815     int bpl;
 816
 817     if (guest_sprite)
 818         SDL_FreeCursor(guest_sprite);
 819
 820     bpl = cursor_get_mono_bpl(c);
 821     image = qemu_mallocz(bpl * c->height);
 822     mask  = qemu_mallocz(bpl * c->height);
 823     cursor_get_mono_image(c, 0x000000, image);
 824     cursor_get_mono_mask(c, 0, mask);
 825     guest_sprite = SDL_CreateCursor(image, mask, c->width, c->height,
 826                                     c->hot_x, c->hot_y);
 827     qemu_free(image);
 828     qemu_free(mask);
 829
 830     if (guest_cursor &&
 831             (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
 832         SDL_SetCursor(guest_sprite);
 833 }
 834
 835 static void sdl_cleanup(void)
 836 {
 837     if (guest_sprite)
 838         SDL_FreeCursor(guest_sprite);
 839     SDL_QuitSubSystem(SDL_INIT_VIDEO);
 840 }
 841
 842 void sdl_display_init(DisplayState *ds, int full_screen, int no_frame)
 843 {
 844     int flags;
 845     uint8_t data = 0;
 846     DisplayAllocator *da;
 847     const SDL_VideoInfo *vi;
 848     char *filename;
 849
 850 #if defined(__APPLE__)
 851     /* always use generic keymaps */
 852     if (!keyboard_layout)
 853         keyboard_layout = "en-us";
 854 #endif
 855     if(keyboard_layout) {
 856         kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
 857         if (!kbd_layout)
 858             exit(1);
 859     }
 860
 861     if (no_frame)
 862         gui_noframe = 1;
 863
 864     if (!full_screen) {
 865         setenv("SDL_VIDEO_ALLOW_SCREENSAVER", "1", 0);
 866     }
 867 #ifdef __linux__
 868     /* on Linux, SDL may use fbcon|directfb|svgalib when run without
 869      * accessible $DISPLAY to open X11 window.  This is often the case
 870      * when qemu is run using sudo.  But in this case, and when actually
 871      * run in X11 environment, SDL fights with X11 for the video card,
 872      * making current display unavailable, often until reboot.
 873      * So make x11 the default SDL video driver if this variable is unset.
 874      * This is a bit hackish but saves us from bigger problem.
 875      * Maybe it's a good idea to fix this in SDL instead.
 876      */
 877     setenv("SDL_VIDEODRIVER", "x11", 0);
 878 #endif
 879
 880     /* Enable normal up/down events for Caps-Lock and Num-Lock keys.
 881      * This requires SDL >= 1.2.14. */
 882     setenv("SDL_DISABLE_LOCK_KEYS", "1", 1);
 883
 884     flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
 885     if (SDL_Init (flags)) {
 886         fprintf(stderr, "Could not initialize SDL(%s) - exiting\n",
 887                 SDL_GetError());
 888         exit(1);
 889     }
 890     vi = SDL_GetVideoInfo();
 891     host_format = *(vi->vfmt);
 892
 893     /* Load a 32x32x4 image. White pixels are transparent. */
 894     filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, "qemu-icon.bmp");
 895     if (filename) {
 896         SDL_Surface *image = SDL_LoadBMP(filename);
 897         if (image) {
 898             uint32_t colorkey = SDL_MapRGB(image->format, 255, 255, 255);
 899             SDL_SetColorKey(image, SDL_SRCCOLORKEY, colorkey);
 900             SDL_WM_SetIcon(image, NULL);
 901         }
 902         qemu_free(filename);
 903     }
 904
 905     if (full_screen) {
 906         gui_fullscreen = 1;
 907         sdl_grab_start();
 908     }
 909
 910     dcl = qemu_mallocz(sizeof(DisplayChangeListener));
 911     dcl->dpy_update = sdl_update;
 912     dcl->dpy_resize = sdl_resize;
 913     dcl->dpy_refresh = sdl_refresh;
 914     dcl->dpy_setdata = sdl_setdata;
 915     dcl->dpy_fill = sdl_fill;
 916     ds->mouse_set = sdl_mouse_warp;
 917     ds->cursor_define = sdl_mouse_define;
 918     register_displaychangelistener(ds, dcl);
 919
 920     da = qemu_mallocz(sizeof(DisplayAllocator));
 921     da->create_displaysurface = sdl_create_displaysurface;
 922     da->resize_displaysurface = sdl_resize_displaysurface;
 923     da->free_displaysurface = sdl_free_displaysurface;
 924     if (register_displayallocator(ds, da) == da) {
 925         dpy_resize(ds);
 926     }
 927
 928     mouse_mode_notifier.notify = sdl_mouse_mode_change;
 929     qemu_add_mouse_mode_change_notifier(&mouse_mode_notifier);
 930
 931     sdl_update_caption();
 932     SDL_EnableKeyRepeat(250, 50);
 933     gui_grab = 0;
 934
 935     sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
 936     sdl_cursor_normal = SDL_GetCursor();
 937
 938     atexit(sdl_cleanup);
 939 }