sdl.c

   1 /*
   2  * QEMU SDL display driver
   3  *
   4  * Copyright (c) 2003 Fabrice Bellard
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24 #include "vl.h"
  25
  26 #include <SDL.h>
  27
  28 #ifndef _WIN32
  29 #include <signal.h>
  30 #endif
  31
  32 static SDL_Surface *screen;
  33 static int gui_grab; /* if true, all keyboard/mouse events are grabbed */
  34 static int last_vm_running;
  35 static int gui_saved_grab;
  36 static int gui_fullscreen;
  37 static int gui_key_modifier_pressed;
  38 static int gui_keysym;
  39 static int gui_fullscreen_initial_grab;
  40 static int gui_grab_code = KMOD_LALT | KMOD_LCTRL;
  41 static uint8_t modifiers_state[256];
  42 static int width, height;
  43 static SDL_Cursor *sdl_cursor_normal;
  44 static SDL_Cursor *sdl_cursor_hidden;
  45 static int absolute_enabled = 0;
  46
  47 static void sdl_update(DisplayState *ds, int x, int y, int w, int h)
  48 {
  49     //    printf("updating x=%d y=%d w=%d h=%d\n", x, y, w, h);
  50     SDL_UpdateRect(screen, x, y, w, h);
  51 }
  52
  53 static void sdl_resize(DisplayState *ds, int w, int h)
  54 {
  55     int flags;
  56
  57     //    printf("resizing to %d %d\n", w, h);
  58
  59     flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
  60     if (gui_fullscreen)
  61         flags |= SDL_FULLSCREEN;
  62
  63     width = w;
  64     height = h;
  65
  66  again:
  67     screen = SDL_SetVideoMode(w, h, 0, flags);
  68     if (!screen) {
  69         fprintf(stderr, "Could not open SDL display\n");
  70         exit(1);
  71     }
  72     if (!screen->pixels && (flags & SDL_HWSURFACE) && (flags & SDL_FULLSCREEN)) {
  73         flags &= ~SDL_HWSURFACE;
  74         goto again;
  75     }
  76
  77     if (!screen->pixels) {
  78         fprintf(stderr, "Could not open SDL display\n");
  79         exit(1);
  80     }
  81     ds->data = screen->pixels;
  82     ds->linesize = screen->pitch;
  83     ds->depth = screen->format->BitsPerPixel;
  84     if (ds->depth == 32 && screen->format->Rshift == 0) {
  85         ds->bgr = 1;
  86     } else {
  87         ds->bgr = 0;
  88     }
  89     ds->width = w;
  90     ds->height = h;
  91 }
  92
  93 /* generic keyboard conversion */
  94
  95 #include "sdl_keysym.h"
  96 #include "keymaps.c"
  97
  98 static kbd_layout_t *kbd_layout = NULL;
  99
 100 static uint8_t sdl_keyevent_to_keycode_generic(const SDL_KeyboardEvent *ev)
 101 {
 102     int keysym;
 103     /* workaround for X11+SDL bug with AltGR */
 104     keysym = ev->keysym.sym;
 105     if (keysym == 0 && ev->keysym.scancode == 113)
 106         keysym = SDLK_MODE;
 107     /* For Japanese key '\' and '|' */
 108     if (keysym == 92 && ev->keysym.scancode == 133) {
 109         keysym = 0xa5;
 110     }
 111     return keysym2scancode(kbd_layout, keysym);
 112 }
 113
 114 /* specific keyboard conversions from scan codes */
 115
 116 #if defined(_WIN32)
 117
 118 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 119 {
 120     return ev->keysym.scancode;
 121 }
 122
 123 #else
 124
 125 static const uint8_t x_keycode_to_pc_keycode[115] = {
 126    0xc7,      /*  97  Home   */
 127    0xc8,      /*  98  Up     */
 128    0xc9,      /*  99  PgUp   */
 129    0xcb,      /* 100  Left   */
 130    0x4c,        /* 101  KP-5   */
 131    0xcd,      /* 102  Right  */
 132    0xcf,      /* 103  End    */
 133    0xd0,      /* 104  Down   */
 134    0xd1,      /* 105  PgDn   */
 135    0xd2,      /* 106  Ins    */
 136    0xd3,      /* 107  Del    */
 137    0x9c,      /* 108  Enter  */
 138    0x9d,      /* 109  Ctrl-R */
 139    0x0,       /* 110  Pause  */
 140    0xb7,      /* 111  Print  */
 141    0xb5,      /* 112  Divide */
 142    0xb8,      /* 113  Alt-R  */
 143    0xc6,      /* 114  Break  */
 144    0x0,         /* 115 */
 145    0x0,         /* 116 */
 146    0x0,         /* 117 */
 147    0x0,         /* 118 */
 148    0x0,         /* 119 */
 149    0x0,         /* 120 */
 150    0x0,         /* 121 */
 151    0x0,         /* 122 */
 152    0x0,         /* 123 */
 153    0x0,         /* 124 */
 154    0x0,         /* 125 */
 155    0x0,         /* 126 */
 156    0x0,         /* 127 */
 157    0x0,         /* 128 */
 158    0x79,         /* 129 Henkan */
 159    0x0,         /* 130 */
 160    0x7b,         /* 131 Muhenkan */
 161    0x0,         /* 132 */
 162    0x7d,         /* 133 Yen */
 163    0x0,         /* 134 */
 164    0x0,         /* 135 */
 165    0x47,         /* 136 KP_7 */
 166    0x48,         /* 137 KP_8 */
 167    0x49,         /* 138 KP_9 */
 168    0x4b,         /* 139 KP_4 */
 169    0x4c,         /* 140 KP_5 */
 170    0x4d,         /* 141 KP_6 */
 171    0x4f,         /* 142 KP_1 */
 172    0x50,         /* 143 KP_2 */
 173    0x51,         /* 144 KP_3 */
 174    0x52,         /* 145 KP_0 */
 175    0x53,         /* 146 KP_. */
 176    0x47,         /* 147 KP_HOME */
 177    0x48,         /* 148 KP_UP */
 178    0x49,         /* 149 KP_PgUp */
 179    0x4b,         /* 150 KP_Left */
 180    0x4c,         /* 151 KP_ */
 181    0x4d,         /* 152 KP_Right */
 182    0x4f,         /* 153 KP_End */
 183    0x50,         /* 154 KP_Down */
 184    0x51,         /* 155 KP_PgDn */
 185    0x52,         /* 156 KP_Ins */
 186    0x53,         /* 157 KP_Del */
 187    0x0,         /* 158 */
 188    0x0,         /* 159 */
 189    0x0,         /* 160 */
 190    0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,         /* 170 */
 191    0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,         /* 180 */
 192    0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,         /* 190 */
 193    0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,         /* 200 */
 194    0x0,         /* 201 */
 195    0x0,         /* 202 */
 196    0x0,         /* 203 */
 197    0x0,         /* 204 */
 198    0x0,         /* 205 */
 199    0x0,         /* 206 */
 200    0x0,         /* 207 */
 201    0x70,         /* 208 Hiragana_Katakana */
 202    0x0,         /* 209 */
 203    0x0,         /* 210 */
 204    0x73,         /* 211 backslash */
 205 };
 206
 207 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 208 {
 209     int keycode;
 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 < 212) {
 218         /* use conversion table */
 219         keycode = x_keycode_to_pc_keycode[keycode - 97];
 220     } else {
 221         keycode = 0;
 222     }
 223     return keycode;
 224 }
 225
 226 #endif
 227
 228 static void reset_keys(void)
 229 {
 230     int i;
 231     for(i = 0; i < 256; i++) {
 232         if (modifiers_state[i]) {
 233             if (i & 0x80)
 234                 kbd_put_keycode(0xe0);
 235             kbd_put_keycode(i | 0x80);
 236             modifiers_state[i] = 0;
 237         }
 238     }
 239 }
 240
 241 static void sdl_process_key(SDL_KeyboardEvent *ev)
 242 {
 243     int keycode, v;
 244
 245     if (ev->keysym.sym == SDLK_PAUSE) {
 246         /* specific case */
 247         v = 0;
 248         if (ev->type == SDL_KEYUP)
 249             v |= 0x80;
 250         kbd_put_keycode(0xe1);
 251         kbd_put_keycode(0x1d | v);
 252         kbd_put_keycode(0x45 | v);
 253         return;
 254     }
 255
 256     if (kbd_layout) {
 257         keycode = sdl_keyevent_to_keycode_generic(ev);
 258     } else {
 259         keycode = sdl_keyevent_to_keycode(ev);
 260     }
 261
 262     switch(keycode) {
 263     case 0x00:
 264         /* sent when leaving window: reset the modifiers state */
 265         reset_keys();
 266         return;
 267     case 0x2a:                          /* Left Shift */
 268     case 0x36:                          /* Right Shift */
 269     case 0x1d:                          /* Left CTRL */
 270     case 0x9d:                          /* Right CTRL */
 271     case 0x38:                          /* Left ALT */
 272     case 0xb8:                         /* Right ALT */
 273         if (ev->type == SDL_KEYUP)
 274             modifiers_state[keycode] = 0;
 275         else
 276             modifiers_state[keycode] = 1;
 277         break;
 278     case 0x45: /* num lock */
 279     case 0x3a: /* caps lock */
 280         /* SDL does not send the key up event, so we generate it */
 281         kbd_put_keycode(keycode);
 282         kbd_put_keycode(keycode | 0x80);
 283         return;
 284     }
 285
 286     /* now send the key code */
 287     if (keycode & 0x80)
 288         kbd_put_keycode(0xe0);
 289     if (ev->type == SDL_KEYUP)
 290         kbd_put_keycode(keycode | 0x80);
 291     else
 292         kbd_put_keycode(keycode & 0x7f);
 293 }
 294
 295 static void sdl_update_caption(void)
 296 {
 297     char buf[1024];
 298     strcpy(buf, "QEMU");
 299     if (!vm_running) {
 300         strcat(buf, " [Stopped]");
 301     }
 302     if (gui_grab) {
 303         strcat(buf, " - Press Ctrl-Alt to exit grab");
 304     }
 305     SDL_WM_SetCaption(buf, "QEMU");
 306 }
 307
 308 static void sdl_hide_cursor(void)
 309 {
 310     if (kbd_mouse_is_absolute()) {
 311         SDL_ShowCursor(1);
 312         SDL_SetCursor(sdl_cursor_hidden);
 313     } else {
 314         SDL_ShowCursor(0);
 315     }
 316 }
 317
 318 static void sdl_show_cursor(void)
 319 {
 320     if (!kbd_mouse_is_absolute()) {
 321         SDL_ShowCursor(1);
 322     }
 323 }
 324
 325 static void sdl_grab_start(void)
 326 {
 327     sdl_hide_cursor();
 328     SDL_WM_GrabInput(SDL_GRAB_ON);
 329     /* dummy read to avoid moving the mouse */
 330     SDL_GetRelativeMouseState(NULL, NULL);
 331     gui_grab = 1;
 332     sdl_update_caption();
 333 }
 334
 335 static void sdl_grab_end(void)
 336 {
 337     SDL_WM_GrabInput(SDL_GRAB_OFF);
 338     sdl_show_cursor();
 339     gui_grab = 0;
 340     sdl_update_caption();
 341 }
 342
 343 static void sdl_send_mouse_event(int dz)
 344 {
 345     int dx, dy, state, buttons;
 346     state = SDL_GetRelativeMouseState(&dx, &dy);
 347     buttons = 0;
 348     if (state & SDL_BUTTON(SDL_BUTTON_LEFT))
 349         buttons |= MOUSE_EVENT_LBUTTON;
 350     if (state & SDL_BUTTON(SDL_BUTTON_RIGHT))
 351         buttons |= MOUSE_EVENT_RBUTTON;
 352     if (state & SDL_BUTTON(SDL_BUTTON_MIDDLE))
 353         buttons |= MOUSE_EVENT_MBUTTON;
 354
 355     if (kbd_mouse_is_absolute()) {
 356         if (!absolute_enabled) {
 357             sdl_hide_cursor();
 358             if (gui_grab) {
 359                 sdl_grab_end();
 360             }
 361             absolute_enabled = 1;
 362         }
 363
 364         SDL_GetMouseState(&dx, &dy);
 365         dx = dx * 0x7FFF / width;
 366         dy = dy * 0x7FFF / height;
 367     }
 368
 369     kbd_mouse_event(dx, dy, dz, buttons);
 370 }
 371
 372 static void toggle_full_screen(DisplayState *ds)
 373 {
 374     gui_fullscreen = !gui_fullscreen;
 375     sdl_resize(ds, screen->w, screen->h);
 376     if (gui_fullscreen) {
 377         gui_saved_grab = gui_grab;
 378         sdl_grab_start();
 379     } else {
 380         if (!gui_saved_grab)
 381             sdl_grab_end();
 382     }
 383     vga_hw_invalidate();
 384     vga_hw_update();
 385 }
 386
 387 static void sdl_refresh(DisplayState *ds)
 388 {
 389     SDL_Event ev1, *ev = &ev1;
 390     int mod_state;
 391
 392     if (last_vm_running != vm_running) {
 393         last_vm_running = vm_running;
 394         sdl_update_caption();
 395     }
 396
 397     vga_hw_update();
 398
 399     while (SDL_PollEvent(ev)) {
 400         switch (ev->type) {
 401         case SDL_VIDEOEXPOSE:
 402             sdl_update(ds, 0, 0, screen->w, screen->h);
 403             break;
 404         case SDL_KEYDOWN:
 405         case SDL_KEYUP:
 406             if (ev->type == SDL_KEYDOWN) {
 407                 mod_state = (SDL_GetModState() & gui_grab_code) ==
 408                     gui_grab_code;
 409                 gui_key_modifier_pressed = mod_state;
 410                 if (gui_key_modifier_pressed) {
 411                     int keycode;
 412                     keycode = sdl_keyevent_to_keycode(&ev->key);
 413                     switch(keycode) {
 414                     case 0x21: /* 'f' key on US keyboard */
 415                         toggle_full_screen(ds);
 416                         gui_keysym = 1;
 417                         break;
 418                     case 0x02 ... 0x0a: /* '1' to '9' keys */
 419                         /* Reset the modifiers sent to the current console */
 420                         reset_keys();
 421                         console_select(keycode - 0x02);
 422                         if (!is_graphic_console()) {
 423                             /* display grab if going to a text console */
 424                             if (gui_grab)
 425                                 sdl_grab_end();
 426                         }
 427                         gui_keysym = 1;
 428                         break;
 429                     default:
 430                         break;
 431                     }
 432                 } else if (!is_graphic_console()) {
 433                     int keysym;
 434                     keysym = 0;
 435                     if (ev->key.keysym.mod & (KMOD_LCTRL | KMOD_RCTRL)) {
 436                         switch(ev->key.keysym.sym) {
 437                         case SDLK_UP: keysym = QEMU_KEY_CTRL_UP; break;
 438                         case SDLK_DOWN: keysym = QEMU_KEY_CTRL_DOWN; break;
 439                         case SDLK_LEFT: keysym = QEMU_KEY_CTRL_LEFT; break;
 440                         case SDLK_RIGHT: keysym = QEMU_KEY_CTRL_RIGHT; break;
 441                         case SDLK_HOME: keysym = QEMU_KEY_CTRL_HOME; break;
 442                         case SDLK_END: keysym = QEMU_KEY_CTRL_END; break;
 443                         case SDLK_PAGEUP: keysym = QEMU_KEY_CTRL_PAGEUP; break;
 444                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_CTRL_PAGEDOWN; break;
 445                         default: break;
 446                         }
 447                     } else {
 448                         switch(ev->key.keysym.sym) {
 449                         case SDLK_UP: keysym = QEMU_KEY_UP; break;
 450                         case SDLK_DOWN: keysym = QEMU_KEY_DOWN; break;
 451                         case SDLK_LEFT: keysym = QEMU_KEY_LEFT; break;
 452                         case SDLK_RIGHT: keysym = QEMU_KEY_RIGHT; break;
 453                         case SDLK_HOME: keysym = QEMU_KEY_HOME; break;
 454                         case SDLK_END: keysym = QEMU_KEY_END; break;
 455                         case SDLK_PAGEUP: keysym = QEMU_KEY_PAGEUP; break;
 456                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_PAGEDOWN; break;
 457                         case SDLK_BACKSPACE: keysym = QEMU_KEY_BACKSPACE; break;                        case SDLK_DELETE: keysym = QEMU_KEY_DELETE; break;
 458                         default: break;
 459                         }
 460                     }
 461                     if (keysym) {
 462                         kbd_put_keysym(keysym);
 463                     } else if (ev->key.keysym.unicode != 0) {
 464                         kbd_put_keysym(ev->key.keysym.unicode);
 465                     }
 466                 }
 467             } else if (ev->type == SDL_KEYUP) {
 468                 mod_state = (ev->key.keysym.mod & gui_grab_code);
 469                 if (!mod_state) {
 470                     if (gui_key_modifier_pressed) {
 471                         gui_key_modifier_pressed = 0;
 472                         if (gui_keysym == 0) {
 473                             /* exit/enter grab if pressing Ctrl-Alt */
 474                             if (!gui_grab) {
 475                                 /* if the application is not active,
 476                                    do not try to enter grab state. It
 477                                    prevents
 478                                    'SDL_WM_GrabInput(SDL_GRAB_ON)'
 479                                    from blocking all the application
 480                                    (SDL bug). */
 481                                 if (SDL_GetAppState() & SDL_APPACTIVE)
 482                                     sdl_grab_start();
 483                             } else {
 484                                 sdl_grab_end();
 485                             }
 486                             /* SDL does not send back all the
 487                                modifiers key, so we must correct it */
 488                             reset_keys();
 489                             break;
 490                         }
 491                         gui_keysym = 0;
 492                     }
 493                 }
 494             }
 495             if (is_graphic_console() && !gui_keysym)
 496                 sdl_process_key(&ev->key);
 497             break;
 498         case SDL_QUIT:
 499             qemu_system_shutdown_request();
 500             break;
 501         case SDL_MOUSEMOTION:
 502             if (gui_grab || kbd_mouse_is_absolute()) {
 503                 sdl_send_mouse_event(0);
 504             }
 505             break;
 506         case SDL_MOUSEBUTTONDOWN:
 507         case SDL_MOUSEBUTTONUP:
 508             {
 509                 SDL_MouseButtonEvent *bev = &ev->button;
 510                 if (!gui_grab && !kbd_mouse_is_absolute()) {
 511                     if (ev->type == SDL_MOUSEBUTTONDOWN &&
 512                         (bev->state & SDL_BUTTON_LMASK)) {
 513                         /* start grabbing all events */
 514                         sdl_grab_start();
 515                     }
 516                 } else {
 517                     int dz;
 518                     dz = 0;
 519 #ifdef SDL_BUTTON_WHEELUP
 520                     if (bev->button == SDL_BUTTON_WHEELUP && ev->type == SDL_MOUSEBUTTONDOWN) {
 521                         dz = -1;
 522                     } else if (bev->button == SDL_BUTTON_WHEELDOWN && ev->type == SDL_MOUSEBUTTONDOWN) {
 523                         dz = 1;
 524                     }
 525 #endif
 526                     sdl_send_mouse_event(dz);
 527                 }
 528             }
 529             break;
 530         case SDL_ACTIVEEVENT:
 531             if (gui_grab && ev->active.state == SDL_APPINPUTFOCUS &&
 532                 !ev->active.gain && !gui_fullscreen_initial_grab) {
 533                 sdl_grab_end();
 534             }
 535             break;
 536         default:
 537             break;
 538         }
 539     }
 540 }
 541
 542 static void sdl_cleanup(void)
 543 {
 544     SDL_Quit();
 545 }
 546
 547 void sdl_display_init(DisplayState *ds, int full_screen)
 548 {
 549     int flags;
 550     uint8_t data = 0;
 551
 552 #if defined(__APPLE__)
 553     /* always use generic keymaps */
 554     if (!keyboard_layout)
 555         keyboard_layout = "en-us";
 556 #endif
 557     if(keyboard_layout) {
 558         kbd_layout = init_keyboard_layout(keyboard_layout);
 559         if (!kbd_layout)
 560             exit(1);
 561     }
 562
 563     flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
 564     if (SDL_Init (flags)) {
 565         fprintf(stderr, "Could not initialize SDL - exiting\n");
 566         exit(1);
 567     }
 568 #ifndef _WIN32
 569     /* NOTE: we still want Ctrl-C to work, so we undo the SDL redirections */
 570     signal(SIGINT, SIG_DFL);
 571     signal(SIGQUIT, SIG_DFL);
 572 #endif
 573
 574     ds->dpy_update = sdl_update;
 575     ds->dpy_resize = sdl_resize;
 576     ds->dpy_refresh = sdl_refresh;
 577
 578     sdl_resize(ds, 640, 400);
 579     sdl_update_caption();
 580     SDL_EnableKeyRepeat(250, 50);
 581     SDL_EnableUNICODE(1);
 582     gui_grab = 0;
 583
 584     sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
 585     sdl_cursor_normal = SDL_GetCursor();
 586
 587     atexit(sdl_cleanup);
 588     if (full_screen) {
 589         gui_fullscreen = 1;
 590         gui_fullscreen_initial_grab = 1;
 591         sdl_grab_start();
 592     }
 593 }