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 "ui/console.h"
  33 #include "sysemu/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 SDL_Cursor *sdl_cursor_normal;
  53 static SDL_Cursor *sdl_cursor_hidden;
  54 static int absolute_enabled = 0;
  55 static int guest_cursor = 0;
  56 static int guest_x, guest_y;
  57 static SDL_Cursor *guest_sprite = NULL;
  58 static SDL_PixelFormat host_format;
  59 static int scaling_active = 0;
  60 static Notifier mouse_mode_notifier;
  61
  62 static void sdl_update(DisplayState *ds, int x, int y, int w, int h)
  63 {
  64     //    printf("updating x=%d y=%d w=%d h=%d\n", x, y, w, h);
  65     SDL_Rect rec;
  66     rec.x = x;
  67     rec.y = y;
  68     rec.w = w;
  69     rec.h = h;
  70
  71     if (guest_screen) {
  72         if (!scaling_active) {
  73             SDL_BlitSurface(guest_screen, &rec, real_screen, &rec);
  74         } else {
  75             if (sdl_zoom_blit(guest_screen, real_screen, SMOOTHING_ON, &rec) < 0) {
  76                 fprintf(stderr, "Zoom blit failed\n");
  77                 exit(1);
  78             }
  79         }
  80     }
  81     SDL_UpdateRect(real_screen, rec.x, rec.y, rec.w, rec.h);
  82 }
  83
  84 static void sdl_setdata(DisplayState *ds)
  85 {
  86     if (guest_screen != NULL) SDL_FreeSurface(guest_screen);
  87
  88     guest_screen = SDL_CreateRGBSurfaceFrom(ds_get_data(ds), ds_get_width(ds), ds_get_height(ds),
  89                                             ds_get_bits_per_pixel(ds), ds_get_linesize(ds),
  90                                             ds->surface->pf.rmask, ds->surface->pf.gmask,
  91                                             ds->surface->pf.bmask, ds->surface->pf.amask);
  92 }
  93
  94 static void do_sdl_resize(int width, int height, int bpp)
  95 {
  96     int flags;
  97
  98     //    printf("resizing to %d %d\n", w, h);
  99
 100     flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
 101     if (gui_fullscreen) {
 102         flags |= SDL_FULLSCREEN;
 103     } else {
 104         flags |= SDL_RESIZABLE;
 105     }
 106     if (gui_noframe)
 107         flags |= SDL_NOFRAME;
 108
 109     real_screen = SDL_SetVideoMode(width, height, bpp, flags);
 110     if (!real_screen) {
 111         fprintf(stderr, "Could not open SDL display (%dx%dx%d): %s\n", width,
 112                 height, bpp, SDL_GetError());
 113         exit(1);
 114     }
 115 }
 116
 117 static void sdl_resize(DisplayState *ds)
 118 {
 119     if (!scaling_active) {
 120         do_sdl_resize(ds_get_width(ds), ds_get_height(ds), 0);
 121     } else if (real_screen->format->BitsPerPixel != ds_get_bits_per_pixel(ds)) {
 122         do_sdl_resize(real_screen->w, real_screen->h,
 123                       ds_get_bits_per_pixel(ds));
 124     }
 125     sdl_setdata(ds);
 126 }
 127
 128 /* generic keyboard conversion */
 129
 130 #include "sdl_keysym.h"
 131
 132 static kbd_layout_t *kbd_layout = NULL;
 133
 134 static uint8_t sdl_keyevent_to_keycode_generic(const SDL_KeyboardEvent *ev)
 135 {
 136     int keysym;
 137     /* workaround for X11+SDL bug with AltGR */
 138     keysym = ev->keysym.sym;
 139     if (keysym == 0 && ev->keysym.scancode == 113)
 140         keysym = SDLK_MODE;
 141     /* For Japanese key '\' and '|' */
 142     if (keysym == 92 && ev->keysym.scancode == 133) {
 143         keysym = 0xa5;
 144     }
 145     return keysym2scancode(kbd_layout, keysym) & SCANCODE_KEYMASK;
 146 }
 147
 148 /* specific keyboard conversions from scan codes */
 149
 150 #if defined(_WIN32)
 151
 152 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 153 {
 154     return ev->keysym.scancode;
 155 }
 156
 157 #else
 158
 159 #if defined(SDL_VIDEO_DRIVER_X11)
 160 #include <X11/XKBlib.h>
 161
 162 static int check_for_evdev(void)
 163 {
 164     SDL_SysWMinfo info;
 165     XkbDescPtr desc = NULL;
 166     int has_evdev = 0;
 167     char *keycodes = NULL;
 168
 169     SDL_VERSION(&info.version);
 170     if (!SDL_GetWMInfo(&info)) {
 171         return 0;
 172     }
 173     desc = XkbGetKeyboard(info.info.x11.display,
 174                           XkbGBN_AllComponentsMask,
 175                           XkbUseCoreKbd);
 176     if (desc && desc->names) {
 177         keycodes = XGetAtomName(info.info.x11.display, desc->names->keycodes);
 178         if (keycodes == NULL) {
 179             fprintf(stderr, "could not lookup keycode name\n");
 180         } else if (strstart(keycodes, "evdev", NULL)) {
 181             has_evdev = 1;
 182         } else if (!strstart(keycodes, "xfree86", NULL)) {
 183             fprintf(stderr, "unknown keycodes `%s', please report to "
 184                     "qemu-devel@nongnu.org\n", keycodes);
 185         }
 186     }
 187
 188     if (desc) {
 189         XkbFreeKeyboard(desc, XkbGBN_AllComponentsMask, True);
 190     }
 191     if (keycodes) {
 192         XFree(keycodes);
 193     }
 194     return has_evdev;
 195 }
 196 #else
 197 static int check_for_evdev(void)
 198 {
 199         return 0;
 200 }
 201 #endif
 202
 203 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 204 {
 205     int keycode;
 206     static int has_evdev = -1;
 207
 208     if (has_evdev == -1)
 209         has_evdev = check_for_evdev();
 210
 211     keycode = ev->keysym.scancode;
 212
 213     if (keycode < 9) {
 214         keycode = 0;
 215     } else if (keycode < 97) {
 216         keycode -= 8; /* just an offset */
 217     } else if (keycode < 158) {
 218         /* use conversion table */
 219         if (has_evdev)
 220             keycode = translate_evdev_keycode(keycode - 97);
 221         else
 222             keycode = translate_xfree86_keycode(keycode - 97);
 223     } else if (keycode == 208) { /* Hiragana_Katakana */
 224         keycode = 0x70;
 225     } else if (keycode == 211) { /* backslash */
 226         keycode = 0x73;
 227     } else {
 228         keycode = 0;
 229     }
 230     return keycode;
 231 }
 232
 233 #endif
 234
 235 static void reset_keys(void)
 236 {
 237     int i;
 238     for(i = 0; i < 256; i++) {
 239         if (modifiers_state[i]) {
 240             if (i & SCANCODE_GREY)
 241                 kbd_put_keycode(SCANCODE_EMUL0);
 242             kbd_put_keycode(i | SCANCODE_UP);
 243             modifiers_state[i] = 0;
 244         }
 245     }
 246 }
 247
 248 static void sdl_process_key(SDL_KeyboardEvent *ev)
 249 {
 250     int keycode, v;
 251
 252     if (ev->keysym.sym == SDLK_PAUSE) {
 253         /* specific case */
 254         v = 0;
 255         if (ev->type == SDL_KEYUP)
 256             v |= SCANCODE_UP;
 257         kbd_put_keycode(0xe1);
 258         kbd_put_keycode(0x1d | v);
 259         kbd_put_keycode(0x45 | v);
 260         return;
 261     }
 262
 263     if (kbd_layout) {
 264         keycode = sdl_keyevent_to_keycode_generic(ev);
 265     } else {
 266         keycode = sdl_keyevent_to_keycode(ev);
 267     }
 268
 269     switch(keycode) {
 270     case 0x00:
 271         /* sent when leaving window: reset the modifiers state */
 272         reset_keys();
 273         return;
 274     case 0x2a:                          /* Left Shift */
 275     case 0x36:                          /* Right Shift */
 276     case 0x1d:                          /* Left CTRL */
 277     case 0x9d:                          /* Right CTRL */
 278     case 0x38:                          /* Left ALT */
 279     case 0xb8:                         /* Right ALT */
 280         if (ev->type == SDL_KEYUP)
 281             modifiers_state[keycode] = 0;
 282         else
 283             modifiers_state[keycode] = 1;
 284         break;
 285 #define QEMU_SDL_VERSION ((SDL_MAJOR_VERSION << 8) + SDL_MINOR_VERSION)
 286 #if QEMU_SDL_VERSION < 0x102 || QEMU_SDL_VERSION == 0x102 && SDL_PATCHLEVEL < 14
 287         /* SDL versions before 1.2.14 don't support key up for caps/num lock. */
 288     case 0x45: /* num lock */
 289     case 0x3a: /* caps lock */
 290         /* SDL does not send the key up event, so we generate it */
 291         kbd_put_keycode(keycode);
 292         kbd_put_keycode(keycode | SCANCODE_UP);
 293         return;
 294 #endif
 295     }
 296
 297     /* now send the key code */
 298     if (keycode & SCANCODE_GREY)
 299         kbd_put_keycode(SCANCODE_EMUL0);
 300     if (ev->type == SDL_KEYUP)
 301         kbd_put_keycode(keycode | SCANCODE_UP);
 302     else
 303         kbd_put_keycode(keycode & SCANCODE_KEYCODEMASK);
 304 }
 305
 306 static void sdl_update_caption(void)
 307 {
 308     char win_title[1024];
 309     char icon_title[1024];
 310     const char *status = "";
 311
 312     if (!runstate_is_running())
 313         status = " [Stopped]";
 314     else if (gui_grab) {
 315         if (alt_grab)
 316             status = " - Press Ctrl-Alt-Shift to exit mouse grab";
 317         else if (ctrl_grab)
 318             status = " - Press Right-Ctrl to exit mouse grab";
 319         else
 320             status = " - Press Ctrl-Alt to exit mouse grab";
 321     }
 322
 323     if (qemu_name) {
 324         snprintf(win_title, sizeof(win_title), "QEMU (%s)%s", qemu_name, status);
 325         snprintf(icon_title, sizeof(icon_title), "QEMU (%s)", qemu_name);
 326     } else {
 327         snprintf(win_title, sizeof(win_title), "QEMU%s", status);
 328         snprintf(icon_title, sizeof(icon_title), "QEMU");
 329     }
 330
 331     SDL_WM_SetCaption(win_title, icon_title);
 332 }
 333
 334 static void sdl_hide_cursor(void)
 335 {
 336     if (!cursor_hide)
 337         return;
 338
 339     if (kbd_mouse_is_absolute()) {
 340         SDL_ShowCursor(1);
 341         SDL_SetCursor(sdl_cursor_hidden);
 342     } else {
 343         SDL_ShowCursor(0);
 344     }
 345 }
 346
 347 static void sdl_show_cursor(void)
 348 {
 349     if (!cursor_hide)
 350         return;
 351
 352     if (!kbd_mouse_is_absolute() || !is_graphic_console()) {
 353         SDL_ShowCursor(1);
 354         if (guest_cursor &&
 355                 (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
 356             SDL_SetCursor(guest_sprite);
 357         else
 358             SDL_SetCursor(sdl_cursor_normal);
 359     }
 360 }
 361
 362 static void sdl_grab_start(void)
 363 {
 364     /*
 365      * If the application is not active, do not try to enter grab state. This
 366      * prevents 'SDL_WM_GrabInput(SDL_GRAB_ON)' from blocking all the
 367      * application (SDL bug).
 368      */
 369     if (!(SDL_GetAppState() & SDL_APPINPUTFOCUS)) {
 370         return;
 371     }
 372     if (guest_cursor) {
 373         SDL_SetCursor(guest_sprite);
 374         if (!kbd_mouse_is_absolute() && !absolute_enabled)
 375             SDL_WarpMouse(guest_x, guest_y);
 376     } else
 377         sdl_hide_cursor();
 378     SDL_WM_GrabInput(SDL_GRAB_ON);
 379     gui_grab = 1;
 380     sdl_update_caption();
 381 }
 382
 383 static void sdl_grab_end(void)
 384 {
 385     SDL_WM_GrabInput(SDL_GRAB_OFF);
 386     gui_grab = 0;
 387     sdl_show_cursor();
 388     sdl_update_caption();
 389 }
 390
 391 static void absolute_mouse_grab(void)
 392 {
 393     int mouse_x, mouse_y;
 394
 395     SDL_GetMouseState(&mouse_x, &mouse_y);
 396     if (mouse_x > 0 && mouse_x < real_screen->w - 1 &&
 397         mouse_y > 0 && mouse_y < real_screen->h - 1) {
 398         sdl_grab_start();
 399     }
 400 }
 401
 402 static void sdl_mouse_mode_change(Notifier *notify, void *data)
 403 {
 404     if (kbd_mouse_is_absolute()) {
 405         if (!absolute_enabled) {
 406             absolute_enabled = 1;
 407             if (is_graphic_console()) {
 408                 absolute_mouse_grab();
 409             }
 410         }
 411     } else if (absolute_enabled) {
 412         if (!gui_fullscreen) {
 413             sdl_grab_end();
 414         }
 415         absolute_enabled = 0;
 416     }
 417 }
 418
 419 static void sdl_send_mouse_event(int dx, int dy, int dz, int x, int y, int state)
 420 {
 421     int buttons = 0;
 422
 423     if (state & SDL_BUTTON(SDL_BUTTON_LEFT)) {
 424         buttons |= MOUSE_EVENT_LBUTTON;
 425     }
 426     if (state & SDL_BUTTON(SDL_BUTTON_RIGHT)) {
 427         buttons |= MOUSE_EVENT_RBUTTON;
 428     }
 429     if (state & SDL_BUTTON(SDL_BUTTON_MIDDLE)) {
 430         buttons |= MOUSE_EVENT_MBUTTON;
 431     }
 432
 433     if (kbd_mouse_is_absolute()) {
 434         dx = x * 0x7FFF / (real_screen->w - 1);
 435         dy = y * 0x7FFF / (real_screen->h - 1);
 436     } else if (guest_cursor) {
 437         x -= guest_x;
 438         y -= guest_y;
 439         guest_x += x;
 440         guest_y += y;
 441         dx = x;
 442         dy = y;
 443     }
 444
 445     kbd_mouse_event(dx, dy, dz, buttons);
 446 }
 447
 448 static void sdl_scale(DisplayState *ds, int width, int height)
 449 {
 450     int bpp = real_screen->format->BitsPerPixel;
 451
 452     if (bpp != 16 && bpp != 32) {
 453         bpp = 32;
 454     }
 455     do_sdl_resize(width, height, bpp);
 456     scaling_active = 1;
 457     if (!is_buffer_shared(ds->surface)) {
 458         ds->surface = qemu_resize_displaysurface(ds, ds_get_width(ds),
 459                                                  ds_get_height(ds));
 460         dpy_gfx_resize(ds);
 461     }
 462 }
 463
 464 static void toggle_full_screen(DisplayState *ds)
 465 {
 466     gui_fullscreen = !gui_fullscreen;
 467     if (gui_fullscreen) {
 468         gui_saved_width = real_screen->w;
 469         gui_saved_height = real_screen->h;
 470         gui_saved_scaling = scaling_active;
 471
 472         do_sdl_resize(ds_get_width(ds), ds_get_height(ds),
 473                       ds_get_bits_per_pixel(ds));
 474         scaling_active = 0;
 475
 476         gui_saved_grab = gui_grab;
 477         sdl_grab_start();
 478     } else {
 479         if (gui_saved_scaling) {
 480             sdl_scale(ds, gui_saved_width, gui_saved_height);
 481         } else {
 482             do_sdl_resize(ds_get_width(ds), ds_get_height(ds), 0);
 483         }
 484         if (!gui_saved_grab || !is_graphic_console()) {
 485             sdl_grab_end();
 486         }
 487     }
 488     vga_hw_invalidate();
 489     vga_hw_update();
 490 }
 491
 492 static void handle_keydown(DisplayState *ds, SDL_Event *ev)
 493 {
 494     int mod_state;
 495     int keycode;
 496
 497     if (alt_grab) {
 498         mod_state = (SDL_GetModState() & (gui_grab_code | KMOD_LSHIFT)) ==
 499                     (gui_grab_code | KMOD_LSHIFT);
 500     } else if (ctrl_grab) {
 501         mod_state = (SDL_GetModState() & KMOD_RCTRL) == KMOD_RCTRL;
 502     } else {
 503         mod_state = (SDL_GetModState() & gui_grab_code) == gui_grab_code;
 504     }
 505     gui_key_modifier_pressed = mod_state;
 506
 507     if (gui_key_modifier_pressed) {
 508         keycode = sdl_keyevent_to_keycode(&ev->key);
 509         switch (keycode) {
 510         case 0x21: /* 'f' key on US keyboard */
 511             toggle_full_screen(ds);
 512             gui_keysym = 1;
 513             break;
 514         case 0x16: /* 'u' key on US keyboard */
 515             if (scaling_active) {
 516                 scaling_active = 0;
 517                 sdl_resize(ds);
 518                 vga_hw_invalidate();
 519                 vga_hw_update();
 520             }
 521             gui_keysym = 1;
 522             break;
 523         case 0x02 ... 0x0a: /* '1' to '9' keys */
 524             /* Reset the modifiers sent to the current console */
 525             reset_keys();
 526             console_select(keycode - 0x02);
 527             gui_keysym = 1;
 528             if (gui_fullscreen) {
 529                 break;
 530             }
 531             if (!is_graphic_console()) {
 532                 /* release grab if going to a text console */
 533                 if (gui_grab) {
 534                     sdl_grab_end();
 535                 } else if (absolute_enabled) {
 536                     sdl_show_cursor();
 537                 }
 538             } else if (absolute_enabled) {
 539                 sdl_hide_cursor();
 540                 absolute_mouse_grab();
 541             }
 542             break;
 543         case 0x1b: /* '+' */
 544         case 0x35: /* '-' */
 545             if (!gui_fullscreen) {
 546                 int width = MAX(real_screen->w + (keycode == 0x1b ? 50 : -50),
 547                                 160);
 548                 int height = (ds_get_height(ds) * width) / ds_get_width(ds);
 549
 550                 sdl_scale(ds, width, height);
 551                 vga_hw_invalidate();
 552                 vga_hw_update();
 553                 gui_keysym = 1;
 554             }
 555         default:
 556             break;
 557         }
 558     } else if (!is_graphic_console()) {
 559         int keysym = 0;
 560
 561         if (ev->key.keysym.mod & (KMOD_LCTRL | KMOD_RCTRL)) {
 562             switch (ev->key.keysym.sym) {
 563             case SDLK_UP:
 564                 keysym = QEMU_KEY_CTRL_UP;
 565                 break;
 566             case SDLK_DOWN:
 567                 keysym = QEMU_KEY_CTRL_DOWN;
 568                 break;
 569             case SDLK_LEFT:
 570                 keysym = QEMU_KEY_CTRL_LEFT;
 571                 break;
 572             case SDLK_RIGHT:
 573                 keysym = QEMU_KEY_CTRL_RIGHT;
 574                 break;
 575             case SDLK_HOME:
 576                 keysym = QEMU_KEY_CTRL_HOME;
 577                 break;
 578             case SDLK_END:
 579                 keysym = QEMU_KEY_CTRL_END;
 580                 break;
 581             case SDLK_PAGEUP:
 582                 keysym = QEMU_KEY_CTRL_PAGEUP;
 583                 break;
 584             case SDLK_PAGEDOWN:
 585                 keysym = QEMU_KEY_CTRL_PAGEDOWN;
 586                 break;
 587             default:
 588                 break;
 589             }
 590         } else {
 591             switch (ev->key.keysym.sym) {
 592             case SDLK_UP:
 593                 keysym = QEMU_KEY_UP;
 594                 break;
 595             case SDLK_DOWN:
 596                 keysym = QEMU_KEY_DOWN;
 597                 break;
 598             case SDLK_LEFT:
 599                 keysym = QEMU_KEY_LEFT;
 600                 break;
 601             case SDLK_RIGHT:
 602                 keysym = QEMU_KEY_RIGHT;
 603                 break;
 604             case SDLK_HOME:
 605                 keysym = QEMU_KEY_HOME;
 606                 break;
 607             case SDLK_END:
 608                 keysym = QEMU_KEY_END;
 609                 break;
 610             case SDLK_PAGEUP:
 611                 keysym = QEMU_KEY_PAGEUP;
 612                 break;
 613             case SDLK_PAGEDOWN:
 614                 keysym = QEMU_KEY_PAGEDOWN;
 615                 break;
 616             case SDLK_BACKSPACE:
 617                 keysym = QEMU_KEY_BACKSPACE;
 618                 break;
 619             case SDLK_DELETE:
 620                 keysym = QEMU_KEY_DELETE;
 621                 break;
 622             default:
 623                 break;
 624             }
 625         }
 626         if (keysym) {
 627             kbd_put_keysym(keysym);
 628         } else if (ev->key.keysym.unicode != 0) {
 629             kbd_put_keysym(ev->key.keysym.unicode);
 630         }
 631     }
 632     if (is_graphic_console() && !gui_keysym) {
 633         sdl_process_key(&ev->key);
 634     }
 635 }
 636
 637 static void handle_keyup(DisplayState *ds, SDL_Event *ev)
 638 {
 639     int mod_state;
 640
 641     if (!alt_grab) {
 642         mod_state = (ev->key.keysym.mod & gui_grab_code);
 643     } else {
 644         mod_state = (ev->key.keysym.mod & (gui_grab_code | KMOD_LSHIFT));
 645     }
 646     if (!mod_state && gui_key_modifier_pressed) {
 647         gui_key_modifier_pressed = 0;
 648         if (gui_keysym == 0) {
 649             /* exit/enter grab if pressing Ctrl-Alt */
 650             if (!gui_grab) {
 651                 if (is_graphic_console()) {
 652                     sdl_grab_start();
 653                 }
 654             } else if (!gui_fullscreen) {
 655                 sdl_grab_end();
 656             }
 657             /* SDL does not send back all the modifiers key, so we must
 658              * correct it. */
 659             reset_keys();
 660             return;
 661         }
 662         gui_keysym = 0;
 663     }
 664     if (is_graphic_console() && !gui_keysym) {
 665         sdl_process_key(&ev->key);
 666     }
 667 }
 668
 669 static void handle_mousemotion(DisplayState *ds, SDL_Event *ev)
 670 {
 671     int max_x, max_y;
 672
 673     if (is_graphic_console() &&
 674         (kbd_mouse_is_absolute() || absolute_enabled)) {
 675         max_x = real_screen->w - 1;
 676         max_y = real_screen->h - 1;
 677         if (gui_grab && (ev->motion.x == 0 || ev->motion.y == 0 ||
 678             ev->motion.x == max_x || ev->motion.y == max_y)) {
 679             sdl_grab_end();
 680         }
 681         if (!gui_grab &&
 682             (ev->motion.x > 0 && ev->motion.x < max_x &&
 683             ev->motion.y > 0 && ev->motion.y < max_y)) {
 684             sdl_grab_start();
 685         }
 686     }
 687     if (gui_grab || kbd_mouse_is_absolute() || absolute_enabled) {
 688         sdl_send_mouse_event(ev->motion.xrel, ev->motion.yrel, 0,
 689                              ev->motion.x, ev->motion.y, ev->motion.state);
 690     }
 691 }
 692
 693 static void handle_mousebutton(DisplayState *ds, SDL_Event *ev)
 694 {
 695     int buttonstate = SDL_GetMouseState(NULL, NULL);
 696     SDL_MouseButtonEvent *bev;
 697     int dz;
 698
 699     if (!is_graphic_console()) {
 700         return;
 701     }
 702
 703     bev = &ev->button;
 704     if (!gui_grab && !kbd_mouse_is_absolute()) {
 705         if (ev->type == SDL_MOUSEBUTTONUP && bev->button == SDL_BUTTON_LEFT) {
 706             /* start grabbing all events */
 707             sdl_grab_start();
 708         }
 709     } else {
 710         dz = 0;
 711         if (ev->type == SDL_MOUSEBUTTONDOWN) {
 712             buttonstate |= SDL_BUTTON(bev->button);
 713         } else {
 714             buttonstate &= ~SDL_BUTTON(bev->button);
 715         }
 716 #ifdef SDL_BUTTON_WHEELUP
 717         if (bev->button == SDL_BUTTON_WHEELUP &&
 718             ev->type == SDL_MOUSEBUTTONDOWN) {
 719             dz = -1;
 720         } else if (bev->button == SDL_BUTTON_WHEELDOWN &&
 721                    ev->type == SDL_MOUSEBUTTONDOWN) {
 722             dz = 1;
 723         }
 724 #endif
 725         sdl_send_mouse_event(0, 0, dz, bev->x, bev->y, buttonstate);
 726     }
 727 }
 728
 729 static void handle_activation(DisplayState *ds, SDL_Event *ev)
 730 {
 731 #ifdef _WIN32
 732     /* Disable grab if the window no longer has the focus
 733      * (Windows-only workaround) */
 734     if (gui_grab && ev->active.state == SDL_APPINPUTFOCUS &&
 735         !ev->active.gain && !gui_fullscreen) {
 736         sdl_grab_end();
 737     }
 738 #endif
 739     if (!gui_grab && ev->active.gain && is_graphic_console() &&
 740         (kbd_mouse_is_absolute() || absolute_enabled)) {
 741         absolute_mouse_grab();
 742     }
 743     if (ev->active.state & SDL_APPACTIVE) {
 744         if (ev->active.gain) {
 745             /* Back to default interval */
 746             dcl->gui_timer_interval = 0;
 747             dcl->idle = 0;
 748         } else {
 749             /* Sleeping interval */
 750             dcl->gui_timer_interval = 500;
 751             dcl->idle = 1;
 752         }
 753     }
 754 }
 755
 756 static void sdl_refresh(DisplayState *ds)
 757 {
 758     SDL_Event ev1, *ev = &ev1;
 759
 760     if (last_vm_running != runstate_is_running()) {
 761         last_vm_running = runstate_is_running();
 762         sdl_update_caption();
 763     }
 764
 765     vga_hw_update();
 766     SDL_EnableUNICODE(!is_graphic_console());
 767
 768     while (SDL_PollEvent(ev)) {
 769         switch (ev->type) {
 770         case SDL_VIDEOEXPOSE:
 771             sdl_update(ds, 0, 0, real_screen->w, real_screen->h);
 772             break;
 773         case SDL_KEYDOWN:
 774             handle_keydown(ds, ev);
 775             break;
 776         case SDL_KEYUP:
 777             handle_keyup(ds, ev);
 778             break;
 779         case SDL_QUIT:
 780             if (!no_quit) {
 781                 no_shutdown = 0;
 782                 qemu_system_shutdown_request();
 783             }
 784             break;
 785         case SDL_MOUSEMOTION:
 786             handle_mousemotion(ds, ev);
 787             break;
 788         case SDL_MOUSEBUTTONDOWN:
 789         case SDL_MOUSEBUTTONUP:
 790             handle_mousebutton(ds, ev);
 791             break;
 792         case SDL_ACTIVEEVENT:
 793             handle_activation(ds, ev);
 794             break;
 795         case SDL_VIDEORESIZE:
 796             sdl_scale(ds, ev->resize.w, ev->resize.h);
 797             vga_hw_invalidate();
 798             vga_hw_update();
 799             break;
 800         default:
 801             break;
 802         }
 803     }
 804 }
 805
 806 static void sdl_mouse_warp(DisplayState *ds, int x, int y, int on)
 807 {
 808     if (on) {
 809         if (!guest_cursor)
 810             sdl_show_cursor();
 811         if (gui_grab || kbd_mouse_is_absolute() || absolute_enabled) {
 812             SDL_SetCursor(guest_sprite);
 813             if (!kbd_mouse_is_absolute() && !absolute_enabled)
 814                 SDL_WarpMouse(x, y);
 815         }
 816     } else if (gui_grab)
 817         sdl_hide_cursor();
 818     guest_cursor = on;
 819     guest_x = x, guest_y = y;
 820 }
 821
 822 static void sdl_mouse_define(DisplayState *ds, QEMUCursor *c)
 823 {
 824     uint8_t *image, *mask;
 825     int bpl;
 826
 827     if (guest_sprite)
 828         SDL_FreeCursor(guest_sprite);
 829
 830     bpl = cursor_get_mono_bpl(c);
 831     image = g_malloc0(bpl * c->height);
 832     mask  = g_malloc0(bpl * c->height);
 833     cursor_get_mono_image(c, 0x000000, image);
 834     cursor_get_mono_mask(c, 0, mask);
 835     guest_sprite = SDL_CreateCursor(image, mask, c->width, c->height,
 836                                     c->hot_x, c->hot_y);
 837     g_free(image);
 838     g_free(mask);
 839
 840     if (guest_cursor &&
 841             (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
 842         SDL_SetCursor(guest_sprite);
 843 }
 844
 845 static void sdl_cleanup(void)
 846 {
 847     if (guest_sprite)
 848         SDL_FreeCursor(guest_sprite);
 849     SDL_QuitSubSystem(SDL_INIT_VIDEO);
 850 }
 851
 852 void sdl_display_init(DisplayState *ds, int full_screen, int no_frame)
 853 {
 854     int flags;
 855     uint8_t data = 0;
 856     const SDL_VideoInfo *vi;
 857     char *filename;
 858
 859 #if defined(__APPLE__)
 860     /* always use generic keymaps */
 861     if (!keyboard_layout)
 862         keyboard_layout = "en-us";
 863 #endif
 864     if(keyboard_layout) {
 865         kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
 866         if (!kbd_layout)
 867             exit(1);
 868     }
 869
 870     if (no_frame)
 871         gui_noframe = 1;
 872
 873     if (!full_screen) {
 874         setenv("SDL_VIDEO_ALLOW_SCREENSAVER", "1", 0);
 875     }
 876 #ifdef __linux__
 877     /* on Linux, SDL may use fbcon|directfb|svgalib when run without
 878      * accessible $DISPLAY to open X11 window.  This is often the case
 879      * when qemu is run using sudo.  But in this case, and when actually
 880      * run in X11 environment, SDL fights with X11 for the video card,
 881      * making current display unavailable, often until reboot.
 882      * So make x11 the default SDL video driver if this variable is unset.
 883      * This is a bit hackish but saves us from bigger problem.
 884      * Maybe it's a good idea to fix this in SDL instead.
 885      */
 886     setenv("SDL_VIDEODRIVER", "x11", 0);
 887 #endif
 888
 889     /* Enable normal up/down events for Caps-Lock and Num-Lock keys.
 890      * This requires SDL >= 1.2.14. */
 891     setenv("SDL_DISABLE_LOCK_KEYS", "1", 1);
 892
 893     flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
 894     if (SDL_Init (flags)) {
 895         fprintf(stderr, "Could not initialize SDL(%s) - exiting\n",
 896                 SDL_GetError());
 897         exit(1);
 898     }
 899     vi = SDL_GetVideoInfo();
 900     host_format = *(vi->vfmt);
 901
 902     /* Load a 32x32x4 image. White pixels are transparent. */
 903     filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, "qemu-icon.bmp");
 904     if (filename) {
 905         SDL_Surface *image = SDL_LoadBMP(filename);
 906         if (image) {
 907             uint32_t colorkey = SDL_MapRGB(image->format, 255, 255, 255);
 908             SDL_SetColorKey(image, SDL_SRCCOLORKEY, colorkey);
 909             SDL_WM_SetIcon(image, NULL);
 910         }
 911         g_free(filename);
 912     }
 913
 914     if (full_screen) {
 915         gui_fullscreen = 1;
 916         sdl_grab_start();
 917     }
 918
 919     dcl = g_malloc0(sizeof(DisplayChangeListener));
 920     dcl->dpy_gfx_update = sdl_update;
 921     dcl->dpy_gfx_resize = sdl_resize;
 922     dcl->dpy_refresh = sdl_refresh;
 923     dcl->dpy_gfx_setdata = sdl_setdata;
 924     dcl->dpy_mouse_set = sdl_mouse_warp;
 925     dcl->dpy_cursor_define = sdl_mouse_define;
 926     register_displaychangelistener(ds, dcl);
 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 }