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
  30 #if SDL_MAJOR_VERSION == 1
  31 #include <SDL_syswm.h>
  32
  33 #include "qemu-common.h"
  34 #include "ui/console.h"
  35 #include "ui/input.h"
  36 #include "sysemu/sysemu.h"
  37 #include "x_keymap.h"
  38 #include "sdl_zoom.h"
  39
  40 static DisplayChangeListener *dcl;
  41 static DisplaySurface *surface;
  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 bool gui_saved_scaling;
  47 static int gui_saved_width;
  48 static int gui_saved_height;
  49 static int gui_saved_grab;
  50 static int gui_fullscreen;
  51 static int gui_noframe;
  52 static int gui_key_modifier_pressed;
  53 static int gui_keysym;
  54 static int gui_grab_code = KMOD_LALT | KMOD_LCTRL;
  55 static uint8_t modifiers_state[256];
  56 static SDL_Cursor *sdl_cursor_normal;
  57 static SDL_Cursor *sdl_cursor_hidden;
  58 static int absolute_enabled = 0;
  59 static int guest_cursor = 0;
  60 static int guest_x, guest_y;
  61 static SDL_Cursor *guest_sprite = NULL;
  62 static SDL_PixelFormat host_format;
  63 static int scaling_active = 0;
  64 static Notifier mouse_mode_notifier;
  65
  66 static void sdl_update(DisplayChangeListener *dcl,
  67                        int x, int y, int w, int h)
  68 {
  69     //    printf("updating x=%d y=%d w=%d h=%d\n", x, y, w, h);
  70     SDL_Rect rec;
  71     rec.x = x;
  72     rec.y = y;
  73     rec.w = w;
  74     rec.h = h;
  75
  76     if (guest_screen) {
  77         if (!scaling_active) {
  78             SDL_BlitSurface(guest_screen, &rec, real_screen, &rec);
  79         } else {
  80             if (sdl_zoom_blit(guest_screen, real_screen, SMOOTHING_ON, &rec) < 0) {
  81                 fprintf(stderr, "Zoom blit failed\n");
  82                 exit(1);
  83             }
  84         }
  85     }
  86     SDL_UpdateRect(real_screen, rec.x, rec.y, rec.w, rec.h);
  87 }
  88
  89 static void do_sdl_resize(int width, int height, int bpp)
  90 {
  91     int flags;
  92     SDL_Surface *tmp_screen;
  93
  94     //    printf("resizing to %d %d\n", w, h);
  95
  96     flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
  97     if (gui_fullscreen) {
  98         flags |= SDL_FULLSCREEN;
  99     } else {
 100         flags |= SDL_RESIZABLE;
 101     }
 102     if (gui_noframe)
 103         flags |= SDL_NOFRAME;
 104
 105     tmp_screen = SDL_SetVideoMode(width, height, bpp, flags);
 106     if (!real_screen) {
 107         if (!tmp_screen) {
 108             fprintf(stderr, "Could not open SDL display (%dx%dx%d): %s\n",
 109                     width, height, bpp, SDL_GetError());
 110             exit(1);
 111         }
 112     } else {
 113         /*
 114          * Revert to the previous video mode if the change of resizing or
 115          * resolution failed.
 116          */
 117         if (!tmp_screen) {
 118             fprintf(stderr, "Failed to set SDL display (%dx%dx%d): %s\n",
 119                     width, height, bpp, SDL_GetError());
 120             return;
 121         }
 122     }
 123
 124     real_screen = tmp_screen;
 125 }
 126
 127 static void sdl_switch(DisplayChangeListener *dcl,
 128                        DisplaySurface *new_surface)
 129 {
 130     PixelFormat pf = qemu_pixelformat_from_pixman(new_surface->format);
 131
 132     /* temporary hack: allows to call sdl_switch to handle scaling changes */
 133     if (new_surface) {
 134         surface = new_surface;
 135     }
 136
 137     if (!scaling_active) {
 138         do_sdl_resize(surface_width(surface), surface_height(surface), 0);
 139     } else if (real_screen->format->BitsPerPixel !=
 140                surface_bits_per_pixel(surface)) {
 141         do_sdl_resize(real_screen->w, real_screen->h,
 142                       surface_bits_per_pixel(surface));
 143     }
 144
 145     if (guest_screen != NULL) {
 146         SDL_FreeSurface(guest_screen);
 147     }
 148     guest_screen = SDL_CreateRGBSurfaceFrom
 149         (surface_data(surface),
 150          surface_width(surface), surface_height(surface),
 151          surface_bits_per_pixel(surface), surface_stride(surface),
 152          pf.rmask, pf.gmask,
 153          pf.bmask, pf.amask);
 154 }
 155
 156 /* generic keyboard conversion */
 157
 158 #include "sdl_keysym.h"
 159
 160 static kbd_layout_t *kbd_layout = NULL;
 161
 162 static uint8_t sdl_keyevent_to_keycode_generic(const SDL_KeyboardEvent *ev)
 163 {
 164     int keysym;
 165     /* workaround for X11+SDL bug with AltGR */
 166     keysym = ev->keysym.sym;
 167     if (keysym == 0 && ev->keysym.scancode == 113)
 168         keysym = SDLK_MODE;
 169     /* For Japanese key '\' and '|' */
 170     if (keysym == 92 && ev->keysym.scancode == 133) {
 171         keysym = 0xa5;
 172     }
 173     return keysym2scancode(kbd_layout, keysym) & SCANCODE_KEYMASK;
 174 }
 175
 176 /* specific keyboard conversions from scan codes */
 177
 178 #if defined(_WIN32)
 179
 180 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 181 {
 182     return ev->keysym.scancode;
 183 }
 184
 185 #else
 186
 187 #if defined(SDL_VIDEO_DRIVER_X11)
 188 #include <X11/XKBlib.h>
 189
 190 static int check_for_evdev(void)
 191 {
 192     SDL_SysWMinfo info;
 193     XkbDescPtr desc = NULL;
 194     int has_evdev = 0;
 195     char *keycodes = NULL;
 196
 197     SDL_VERSION(&info.version);
 198     if (!SDL_GetWMInfo(&info)) {
 199         return 0;
 200     }
 201     desc = XkbGetKeyboard(info.info.x11.display,
 202                           XkbGBN_AllComponentsMask,
 203                           XkbUseCoreKbd);
 204     if (desc && desc->names) {
 205         keycodes = XGetAtomName(info.info.x11.display, desc->names->keycodes);
 206         if (keycodes == NULL) {
 207             fprintf(stderr, "could not lookup keycode name\n");
 208         } else if (strstart(keycodes, "evdev", NULL)) {
 209             has_evdev = 1;
 210         } else if (!strstart(keycodes, "xfree86", NULL)) {
 211             fprintf(stderr, "unknown keycodes `%s', please report to "
 212                     "qemu-devel@nongnu.org\n", keycodes);
 213         }
 214     }
 215
 216     if (desc) {
 217         XkbFreeKeyboard(desc, XkbGBN_AllComponentsMask, True);
 218     }
 219     if (keycodes) {
 220         XFree(keycodes);
 221     }
 222     return has_evdev;
 223 }
 224 #else
 225 static int check_for_evdev(void)
 226 {
 227         return 0;
 228 }
 229 #endif
 230
 231 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 232 {
 233     int keycode;
 234     static int has_evdev = -1;
 235
 236     if (has_evdev == -1)
 237         has_evdev = check_for_evdev();
 238
 239     keycode = ev->keysym.scancode;
 240
 241     if (keycode < 9) {
 242         keycode = 0;
 243     } else if (keycode < 97) {
 244         keycode -= 8; /* just an offset */
 245     } else if (keycode < 158) {
 246         /* use conversion table */
 247         if (has_evdev)
 248             keycode = translate_evdev_keycode(keycode - 97);
 249         else
 250             keycode = translate_xfree86_keycode(keycode - 97);
 251     } else if (keycode == 208) { /* Hiragana_Katakana */
 252         keycode = 0x70;
 253     } else if (keycode == 211) { /* backslash */
 254         keycode = 0x73;
 255     } else {
 256         keycode = 0;
 257     }
 258     return keycode;
 259 }
 260
 261 #endif
 262
 263 static void reset_keys(void)
 264 {
 265     int i;
 266     for(i = 0; i < 256; i++) {
 267         if (modifiers_state[i]) {
 268             qemu_input_event_send_key_number(dcl->con, i, false);
 269             modifiers_state[i] = 0;
 270         }
 271     }
 272 }
 273
 274 static void sdl_process_key(SDL_KeyboardEvent *ev)
 275 {
 276     int keycode;
 277
 278     if (ev->keysym.sym == SDLK_PAUSE) {
 279         /* specific case */
 280         qemu_input_event_send_key_qcode(dcl->con, Q_KEY_CODE_PAUSE,
 281                                         ev->type == SDL_KEYDOWN);
 282         return;
 283     }
 284
 285     if (kbd_layout) {
 286         keycode = sdl_keyevent_to_keycode_generic(ev);
 287     } else {
 288         keycode = sdl_keyevent_to_keycode(ev);
 289     }
 290
 291     switch(keycode) {
 292     case 0x00:
 293         /* sent when leaving window: reset the modifiers state */
 294         reset_keys();
 295         return;
 296     case 0x2a:                          /* Left Shift */
 297     case 0x36:                          /* Right Shift */
 298     case 0x1d:                          /* Left CTRL */
 299     case 0x9d:                          /* Right CTRL */
 300     case 0x38:                          /* Left ALT */
 301     case 0xb8:                         /* Right ALT */
 302         if (ev->type == SDL_KEYUP)
 303             modifiers_state[keycode] = 0;
 304         else
 305             modifiers_state[keycode] = 1;
 306         break;
 307 #define QEMU_SDL_VERSION ((SDL_MAJOR_VERSION << 8) + SDL_MINOR_VERSION)
 308 #if QEMU_SDL_VERSION < 0x102 || QEMU_SDL_VERSION == 0x102 && SDL_PATCHLEVEL < 14
 309         /* SDL versions before 1.2.14 don't support key up for caps/num lock. */
 310     case 0x45: /* num lock */
 311     case 0x3a: /* caps lock */
 312         /* SDL does not send the key up event, so we generate it */
 313         qemu_input_event_send_key_number(dcl->con, keycode, true);
 314         qemu_input_event_send_key_number(dcl->con, keycode, false);
 315         return;
 316 #endif
 317     }
 318
 319     /* now send the key code */
 320     qemu_input_event_send_key_number(dcl->con, keycode,
 321                                      ev->type == SDL_KEYDOWN);
 322 }
 323
 324 static void sdl_update_caption(void)
 325 {
 326     char win_title[1024];
 327     char icon_title[1024];
 328     const char *status = "";
 329
 330     if (!runstate_is_running())
 331         status = " [Stopped]";
 332     else if (gui_grab) {
 333         if (alt_grab)
 334             status = " - Press Ctrl-Alt-Shift to exit mouse grab";
 335         else if (ctrl_grab)
 336             status = " - Press Right-Ctrl to exit mouse grab";
 337         else
 338             status = " - Press Ctrl-Alt to exit mouse grab";
 339     }
 340
 341     if (qemu_name) {
 342         snprintf(win_title, sizeof(win_title), "QEMU (%s)%s", qemu_name, status);
 343         snprintf(icon_title, sizeof(icon_title), "QEMU (%s)", qemu_name);
 344     } else {
 345         snprintf(win_title, sizeof(win_title), "QEMU%s", status);
 346         snprintf(icon_title, sizeof(icon_title), "QEMU");
 347     }
 348
 349     SDL_WM_SetCaption(win_title, icon_title);
 350 }
 351
 352 static void sdl_hide_cursor(void)
 353 {
 354     if (!cursor_hide)
 355         return;
 356
 357     if (qemu_input_is_absolute()) {
 358         SDL_ShowCursor(1);
 359         SDL_SetCursor(sdl_cursor_hidden);
 360     } else {
 361         SDL_ShowCursor(0);
 362     }
 363 }
 364
 365 static void sdl_show_cursor(void)
 366 {
 367     if (!cursor_hide)
 368         return;
 369
 370     if (!qemu_input_is_absolute() || !qemu_console_is_graphic(NULL)) {
 371         SDL_ShowCursor(1);
 372         if (guest_cursor &&
 373                 (gui_grab || qemu_input_is_absolute() || absolute_enabled))
 374             SDL_SetCursor(guest_sprite);
 375         else
 376             SDL_SetCursor(sdl_cursor_normal);
 377     }
 378 }
 379
 380 static void sdl_grab_start(void)
 381 {
 382     /*
 383      * If the application is not active, do not try to enter grab state. This
 384      * prevents 'SDL_WM_GrabInput(SDL_GRAB_ON)' from blocking all the
 385      * application (SDL bug).
 386      */
 387     if (!(SDL_GetAppState() & SDL_APPINPUTFOCUS)) {
 388         return;
 389     }
 390     if (guest_cursor) {
 391         SDL_SetCursor(guest_sprite);
 392         if (!qemu_input_is_absolute() && !absolute_enabled) {
 393             SDL_WarpMouse(guest_x, guest_y);
 394         }
 395     } else
 396         sdl_hide_cursor();
 397     SDL_WM_GrabInput(SDL_GRAB_ON);
 398     gui_grab = 1;
 399     sdl_update_caption();
 400 }
 401
 402 static void sdl_grab_end(void)
 403 {
 404     SDL_WM_GrabInput(SDL_GRAB_OFF);
 405     gui_grab = 0;
 406     sdl_show_cursor();
 407     sdl_update_caption();
 408 }
 409
 410 static void absolute_mouse_grab(void)
 411 {
 412     int mouse_x, mouse_y;
 413
 414     SDL_GetMouseState(&mouse_x, &mouse_y);
 415     if (mouse_x > 0 && mouse_x < real_screen->w - 1 &&
 416         mouse_y > 0 && mouse_y < real_screen->h - 1) {
 417         sdl_grab_start();
 418     }
 419 }
 420
 421 static void sdl_mouse_mode_change(Notifier *notify, void *data)
 422 {
 423     if (qemu_input_is_absolute()) {
 424         if (!absolute_enabled) {
 425             absolute_enabled = 1;
 426             if (qemu_console_is_graphic(NULL)) {
 427                 absolute_mouse_grab();
 428             }
 429         }
 430     } else if (absolute_enabled) {
 431         if (!gui_fullscreen) {
 432             sdl_grab_end();
 433         }
 434         absolute_enabled = 0;
 435     }
 436 }
 437
 438 static void sdl_send_mouse_event(int dx, int dy, int x, int y, int state)
 439 {
 440     static uint32_t bmap[INPUT_BUTTON_MAX] = {
 441         [INPUT_BUTTON_LEFT]       = SDL_BUTTON(SDL_BUTTON_LEFT),
 442         [INPUT_BUTTON_MIDDLE]     = SDL_BUTTON(SDL_BUTTON_MIDDLE),
 443         [INPUT_BUTTON_RIGHT]      = SDL_BUTTON(SDL_BUTTON_RIGHT),
 444         [INPUT_BUTTON_WHEEL_UP]   = SDL_BUTTON(SDL_BUTTON_WHEELUP),
 445         [INPUT_BUTTON_WHEEL_DOWN] = SDL_BUTTON(SDL_BUTTON_WHEELDOWN),
 446     };
 447     static uint32_t prev_state;
 448
 449     if (prev_state != state) {
 450         qemu_input_update_buttons(dcl->con, bmap, prev_state, state);
 451         prev_state = state;
 452     }
 453
 454     if (qemu_input_is_absolute()) {
 455         qemu_input_queue_abs(dcl->con, INPUT_AXIS_X, x,
 456                              real_screen->w);
 457         qemu_input_queue_abs(dcl->con, INPUT_AXIS_Y, y,
 458                              real_screen->h);
 459     } else {
 460         if (guest_cursor) {
 461             x -= guest_x;
 462             y -= guest_y;
 463             guest_x += x;
 464             guest_y += y;
 465             dx = x;
 466             dy = y;
 467         }
 468         qemu_input_queue_rel(dcl->con, INPUT_AXIS_X, dx);
 469         qemu_input_queue_rel(dcl->con, INPUT_AXIS_Y, dy);
 470     }
 471     qemu_input_event_sync();
 472 }
 473
 474 static void sdl_scale(int width, int height)
 475 {
 476     int bpp = real_screen->format->BitsPerPixel;
 477
 478     if (bpp != 16 && bpp != 32) {
 479         bpp = 32;
 480     }
 481     do_sdl_resize(width, height, bpp);
 482     scaling_active = 1;
 483 }
 484
 485 static void toggle_full_screen(void)
 486 {
 487     int width = surface_width(surface);
 488     int height = surface_height(surface);
 489     int bpp = surface_bits_per_pixel(surface);
 490
 491     gui_fullscreen = !gui_fullscreen;
 492     if (gui_fullscreen) {
 493         gui_saved_width = real_screen->w;
 494         gui_saved_height = real_screen->h;
 495         gui_saved_scaling = scaling_active;
 496
 497         do_sdl_resize(width, height, bpp);
 498         scaling_active = 0;
 499
 500         gui_saved_grab = gui_grab;
 501         sdl_grab_start();
 502     } else {
 503         if (gui_saved_scaling) {
 504             sdl_scale(gui_saved_width, gui_saved_height);
 505         } else {
 506             do_sdl_resize(width, height, 0);
 507         }
 508         if (!gui_saved_grab || !qemu_console_is_graphic(NULL)) {
 509             sdl_grab_end();
 510         }
 511     }
 512     graphic_hw_invalidate(NULL);
 513     graphic_hw_update(NULL);
 514 }
 515
 516 static void handle_keydown(SDL_Event *ev)
 517 {
 518     int mod_state;
 519     int keycode;
 520
 521     if (alt_grab) {
 522         mod_state = (SDL_GetModState() & (gui_grab_code | KMOD_LSHIFT)) ==
 523                     (gui_grab_code | KMOD_LSHIFT);
 524     } else if (ctrl_grab) {
 525         mod_state = (SDL_GetModState() & KMOD_RCTRL) == KMOD_RCTRL;
 526     } else {
 527         mod_state = (SDL_GetModState() & gui_grab_code) == gui_grab_code;
 528     }
 529     gui_key_modifier_pressed = mod_state;
 530
 531     if (gui_key_modifier_pressed) {
 532         keycode = sdl_keyevent_to_keycode(&ev->key);
 533         switch (keycode) {
 534         case 0x21: /* 'f' key on US keyboard */
 535             toggle_full_screen();
 536             gui_keysym = 1;
 537             break;
 538         case 0x16: /* 'u' key on US keyboard */
 539             if (scaling_active) {
 540                 scaling_active = 0;
 541                 sdl_switch(dcl, NULL);
 542                 graphic_hw_invalidate(NULL);
 543                 graphic_hw_update(NULL);
 544             }
 545             gui_keysym = 1;
 546             break;
 547         case 0x02 ... 0x0a: /* '1' to '9' keys */
 548             /* Reset the modifiers sent to the current console */
 549             reset_keys();
 550             console_select(keycode - 0x02);
 551             gui_keysym = 1;
 552             if (gui_fullscreen) {
 553                 break;
 554             }
 555             if (!qemu_console_is_graphic(NULL)) {
 556                 /* release grab if going to a text console */
 557                 if (gui_grab) {
 558                     sdl_grab_end();
 559                 } else if (absolute_enabled) {
 560                     sdl_show_cursor();
 561                 }
 562             } else if (absolute_enabled) {
 563                 sdl_hide_cursor();
 564                 absolute_mouse_grab();
 565             }
 566             break;
 567         case 0x1b: /* '+' */
 568         case 0x35: /* '-' */
 569             if (!gui_fullscreen) {
 570                 int width = MAX(real_screen->w + (keycode == 0x1b ? 50 : -50),
 571                                 160);
 572                 int height = (surface_height(surface) * width) /
 573                     surface_width(surface);
 574
 575                 sdl_scale(width, height);
 576                 graphic_hw_invalidate(NULL);
 577                 graphic_hw_update(NULL);
 578                 gui_keysym = 1;
 579             }
 580         default:
 581             break;
 582         }
 583     } else if (!qemu_console_is_graphic(NULL)) {
 584         int keysym = 0;
 585
 586         if (ev->key.keysym.mod & (KMOD_LCTRL | KMOD_RCTRL)) {
 587             switch (ev->key.keysym.sym) {
 588             case SDLK_UP:
 589                 keysym = QEMU_KEY_CTRL_UP;
 590                 break;
 591             case SDLK_DOWN:
 592                 keysym = QEMU_KEY_CTRL_DOWN;
 593                 break;
 594             case SDLK_LEFT:
 595                 keysym = QEMU_KEY_CTRL_LEFT;
 596                 break;
 597             case SDLK_RIGHT:
 598                 keysym = QEMU_KEY_CTRL_RIGHT;
 599                 break;
 600             case SDLK_HOME:
 601                 keysym = QEMU_KEY_CTRL_HOME;
 602                 break;
 603             case SDLK_END:
 604                 keysym = QEMU_KEY_CTRL_END;
 605                 break;
 606             case SDLK_PAGEUP:
 607                 keysym = QEMU_KEY_CTRL_PAGEUP;
 608                 break;
 609             case SDLK_PAGEDOWN:
 610                 keysym = QEMU_KEY_CTRL_PAGEDOWN;
 611                 break;
 612             default:
 613                 break;
 614             }
 615         } else {
 616             switch (ev->key.keysym.sym) {
 617             case SDLK_UP:
 618                 keysym = QEMU_KEY_UP;
 619                 break;
 620             case SDLK_DOWN:
 621                 keysym = QEMU_KEY_DOWN;
 622                 break;
 623             case SDLK_LEFT:
 624                 keysym = QEMU_KEY_LEFT;
 625                 break;
 626             case SDLK_RIGHT:
 627                 keysym = QEMU_KEY_RIGHT;
 628                 break;
 629             case SDLK_HOME:
 630                 keysym = QEMU_KEY_HOME;
 631                 break;
 632             case SDLK_END:
 633                 keysym = QEMU_KEY_END;
 634                 break;
 635             case SDLK_PAGEUP:
 636                 keysym = QEMU_KEY_PAGEUP;
 637                 break;
 638             case SDLK_PAGEDOWN:
 639                 keysym = QEMU_KEY_PAGEDOWN;
 640                 break;
 641             case SDLK_BACKSPACE:
 642                 keysym = QEMU_KEY_BACKSPACE;
 643                 break;
 644             case SDLK_DELETE:
 645                 keysym = QEMU_KEY_DELETE;
 646                 break;
 647             default:
 648                 break;
 649             }
 650         }
 651         if (keysym) {
 652             kbd_put_keysym(keysym);
 653         } else if (ev->key.keysym.unicode != 0) {
 654             kbd_put_keysym(ev->key.keysym.unicode);
 655         }
 656     }
 657     if (qemu_console_is_graphic(NULL) && !gui_keysym) {
 658         sdl_process_key(&ev->key);
 659     }
 660 }
 661
 662 static void handle_keyup(SDL_Event *ev)
 663 {
 664     int mod_state;
 665
 666     if (!alt_grab) {
 667         mod_state = (ev->key.keysym.mod & gui_grab_code);
 668     } else {
 669         mod_state = (ev->key.keysym.mod & (gui_grab_code | KMOD_LSHIFT));
 670     }
 671     if (!mod_state && gui_key_modifier_pressed) {
 672         gui_key_modifier_pressed = 0;
 673         if (gui_keysym == 0) {
 674             /* exit/enter grab if pressing Ctrl-Alt */
 675             if (!gui_grab) {
 676                 if (qemu_console_is_graphic(NULL)) {
 677                     sdl_grab_start();
 678                 }
 679             } else if (!gui_fullscreen) {
 680                 sdl_grab_end();
 681             }
 682             /* SDL does not send back all the modifiers key, so we must
 683              * correct it. */
 684             reset_keys();
 685             return;
 686         }
 687         gui_keysym = 0;
 688     }
 689     if (qemu_console_is_graphic(NULL) && !gui_keysym) {
 690         sdl_process_key(&ev->key);
 691     }
 692 }
 693
 694 static void handle_mousemotion(SDL_Event *ev)
 695 {
 696     int max_x, max_y;
 697
 698     if (qemu_console_is_graphic(NULL) &&
 699         (qemu_input_is_absolute() || absolute_enabled)) {
 700         max_x = real_screen->w - 1;
 701         max_y = real_screen->h - 1;
 702         if (gui_grab && (ev->motion.x == 0 || ev->motion.y == 0 ||
 703             ev->motion.x == max_x || ev->motion.y == max_y)) {
 704             sdl_grab_end();
 705         }
 706         if (!gui_grab &&
 707             (ev->motion.x > 0 && ev->motion.x < max_x &&
 708             ev->motion.y > 0 && ev->motion.y < max_y)) {
 709             sdl_grab_start();
 710         }
 711     }
 712     if (gui_grab || qemu_input_is_absolute() || absolute_enabled) {
 713         sdl_send_mouse_event(ev->motion.xrel, ev->motion.yrel,
 714                              ev->motion.x, ev->motion.y, ev->motion.state);
 715     }
 716 }
 717
 718 static void handle_mousebutton(SDL_Event *ev)
 719 {
 720     int buttonstate = SDL_GetMouseState(NULL, NULL);
 721     SDL_MouseButtonEvent *bev;
 722
 723     if (!qemu_console_is_graphic(NULL)) {
 724         return;
 725     }
 726
 727     bev = &ev->button;
 728     if (!gui_grab && !qemu_input_is_absolute()) {
 729         if (ev->type == SDL_MOUSEBUTTONUP && bev->button == SDL_BUTTON_LEFT) {
 730             /* start grabbing all events */
 731             sdl_grab_start();
 732         }
 733     } else {
 734         if (ev->type == SDL_MOUSEBUTTONDOWN) {
 735             buttonstate |= SDL_BUTTON(bev->button);
 736         } else {
 737             buttonstate &= ~SDL_BUTTON(bev->button);
 738         }
 739         sdl_send_mouse_event(0, 0, bev->x, bev->y, buttonstate);
 740     }
 741 }
 742
 743 static void handle_activation(SDL_Event *ev)
 744 {
 745 #ifdef _WIN32
 746     /* Disable grab if the window no longer has the focus
 747      * (Windows-only workaround) */
 748     if (gui_grab && ev->active.state == SDL_APPINPUTFOCUS &&
 749         !ev->active.gain && !gui_fullscreen) {
 750         sdl_grab_end();
 751     }
 752 #endif
 753     if (!gui_grab && ev->active.gain && qemu_console_is_graphic(NULL) &&
 754         (qemu_input_is_absolute() || absolute_enabled)) {
 755         absolute_mouse_grab();
 756     }
 757     if (ev->active.state & SDL_APPACTIVE) {
 758         if (ev->active.gain) {
 759             /* Back to default interval */
 760             update_displaychangelistener(dcl, GUI_REFRESH_INTERVAL_DEFAULT);
 761         } else {
 762             /* Sleeping interval.  Not using the long default here as
 763              * sdl_refresh does not only update the guest screen, but
 764              * also checks for gui events. */
 765             update_displaychangelistener(dcl, 500);
 766         }
 767     }
 768 }
 769
 770 static void sdl_refresh(DisplayChangeListener *dcl)
 771 {
 772     SDL_Event ev1, *ev = &ev1;
 773
 774     if (last_vm_running != runstate_is_running()) {
 775         last_vm_running = runstate_is_running();
 776         sdl_update_caption();
 777     }
 778
 779     graphic_hw_update(NULL);
 780     SDL_EnableUNICODE(!qemu_console_is_graphic(NULL));
 781
 782     while (SDL_PollEvent(ev)) {
 783         switch (ev->type) {
 784         case SDL_VIDEOEXPOSE:
 785             sdl_update(dcl, 0, 0, real_screen->w, real_screen->h);
 786             break;
 787         case SDL_KEYDOWN:
 788             handle_keydown(ev);
 789             break;
 790         case SDL_KEYUP:
 791             handle_keyup(ev);
 792             break;
 793         case SDL_QUIT:
 794             if (!no_quit) {
 795                 no_shutdown = 0;
 796                 qemu_system_shutdown_request();
 797             }
 798             break;
 799         case SDL_MOUSEMOTION:
 800             handle_mousemotion(ev);
 801             break;
 802         case SDL_MOUSEBUTTONDOWN:
 803         case SDL_MOUSEBUTTONUP:
 804             handle_mousebutton(ev);
 805             break;
 806         case SDL_ACTIVEEVENT:
 807             handle_activation(ev);
 808             break;
 809         case SDL_VIDEORESIZE:
 810             sdl_scale(ev->resize.w, ev->resize.h);
 811             graphic_hw_invalidate(NULL);
 812             graphic_hw_update(NULL);
 813             break;
 814         default:
 815             break;
 816         }
 817     }
 818 }
 819
 820 static void sdl_mouse_warp(DisplayChangeListener *dcl,
 821                            int x, int y, int on)
 822 {
 823     if (on) {
 824         if (!guest_cursor)
 825             sdl_show_cursor();
 826         if (gui_grab || qemu_input_is_absolute() || absolute_enabled) {
 827             SDL_SetCursor(guest_sprite);
 828             if (!qemu_input_is_absolute() && !absolute_enabled) {
 829                 SDL_WarpMouse(x, y);
 830             }
 831         }
 832     } else if (gui_grab)
 833         sdl_hide_cursor();
 834     guest_cursor = on;
 835     guest_x = x, guest_y = y;
 836 }
 837
 838 static void sdl_mouse_define(DisplayChangeListener *dcl,
 839                              QEMUCursor *c)
 840 {
 841     uint8_t *image, *mask;
 842     int bpl;
 843
 844     if (guest_sprite)
 845         SDL_FreeCursor(guest_sprite);
 846
 847     bpl = cursor_get_mono_bpl(c);
 848     image = g_malloc0(bpl * c->height);
 849     mask  = g_malloc0(bpl * c->height);
 850     cursor_get_mono_image(c, 0x000000, image);
 851     cursor_get_mono_mask(c, 0, mask);
 852     guest_sprite = SDL_CreateCursor(image, mask, c->width, c->height,
 853                                     c->hot_x, c->hot_y);
 854     g_free(image);
 855     g_free(mask);
 856
 857     if (guest_cursor &&
 858             (gui_grab || qemu_input_is_absolute() || absolute_enabled))
 859         SDL_SetCursor(guest_sprite);
 860 }
 861
 862 static void sdl_cleanup(void)
 863 {
 864     if (guest_sprite)
 865         SDL_FreeCursor(guest_sprite);
 866     SDL_QuitSubSystem(SDL_INIT_VIDEO);
 867 }
 868
 869 static const DisplayChangeListenerOps dcl_ops = {
 870     .dpy_name          = "sdl",
 871     .dpy_gfx_update    = sdl_update,
 872     .dpy_gfx_switch    = sdl_switch,
 873     .dpy_refresh       = sdl_refresh,
 874     .dpy_mouse_set     = sdl_mouse_warp,
 875     .dpy_cursor_define = sdl_mouse_define,
 876 };
 877
 878 void sdl_display_init(DisplayState *ds, int full_screen, int no_frame)
 879 {
 880     int flags;
 881     uint8_t data = 0;
 882     const SDL_VideoInfo *vi;
 883     char *filename;
 884
 885 #if defined(__APPLE__)
 886     /* always use generic keymaps */
 887     if (!keyboard_layout)
 888         keyboard_layout = "en-us";
 889 #endif
 890     if(keyboard_layout) {
 891         kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
 892         if (!kbd_layout)
 893             exit(1);
 894     }
 895
 896     if (no_frame)
 897         gui_noframe = 1;
 898
 899     if (!full_screen) {
 900         setenv("SDL_VIDEO_ALLOW_SCREENSAVER", "1", 0);
 901     }
 902 #ifdef __linux__
 903     /* on Linux, SDL may use fbcon|directfb|svgalib when run without
 904      * accessible $DISPLAY to open X11 window.  This is often the case
 905      * when qemu is run using sudo.  But in this case, and when actually
 906      * run in X11 environment, SDL fights with X11 for the video card,
 907      * making current display unavailable, often until reboot.
 908      * So make x11 the default SDL video driver if this variable is unset.
 909      * This is a bit hackish but saves us from bigger problem.
 910      * Maybe it's a good idea to fix this in SDL instead.
 911      */
 912     setenv("SDL_VIDEODRIVER", "x11", 0);
 913 #endif
 914
 915     /* Enable normal up/down events for Caps-Lock and Num-Lock keys.
 916      * This requires SDL >= 1.2.14. */
 917     setenv("SDL_DISABLE_LOCK_KEYS", "1", 1);
 918
 919     flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
 920     if (SDL_Init (flags)) {
 921         fprintf(stderr, "Could not initialize SDL(%s) - exiting\n",
 922                 SDL_GetError());
 923         exit(1);
 924     }
 925     vi = SDL_GetVideoInfo();
 926     host_format = *(vi->vfmt);
 927
 928     /* Load a 32x32x4 image. White pixels are transparent. */
 929     filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, "qemu-icon.bmp");
 930     if (filename) {
 931         SDL_Surface *image = SDL_LoadBMP(filename);
 932         if (image) {
 933             uint32_t colorkey = SDL_MapRGB(image->format, 255, 255, 255);
 934             SDL_SetColorKey(image, SDL_SRCCOLORKEY, colorkey);
 935             SDL_WM_SetIcon(image, NULL);
 936         }
 937         g_free(filename);
 938     }
 939
 940     if (full_screen) {
 941         gui_fullscreen = 1;
 942         sdl_grab_start();
 943     }
 944
 945     dcl = g_malloc0(sizeof(DisplayChangeListener));
 946     dcl->ops = &dcl_ops;
 947     register_displaychangelistener(dcl);
 948
 949     mouse_mode_notifier.notify = sdl_mouse_mode_change;
 950     qemu_add_mouse_mode_change_notifier(&mouse_mode_notifier);
 951
 952     sdl_update_caption();
 953     SDL_EnableKeyRepeat(250, 50);
 954     gui_grab = 0;
 955
 956     sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
 957     sdl_cursor_normal = SDL_GetCursor();
 958
 959     atexit(sdl_cleanup);
 960 }
 961 #endif