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     return keysym2scancode(kbd_layout, keysym);
 108 }
 109
 110 /* specific keyboard conversions from scan codes */
 111
 112 #if defined(_WIN32)
 113
 114 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 115 {
 116     return ev->keysym.scancode;
 117 }
 118
 119 #else
 120
 121 static const uint8_t x_keycode_to_pc_keycode[61] = {
 122    0xc7,      /*  97  Home   */
 123    0xc8,      /*  98  Up     */
 124    0xc9,      /*  99  PgUp   */
 125    0xcb,      /* 100  Left   */
 126    0x4c,        /* 101  KP-5   */
 127    0xcd,      /* 102  Right  */
 128    0xcf,      /* 103  End    */
 129    0xd0,      /* 104  Down   */
 130    0xd1,      /* 105  PgDn   */
 131    0xd2,      /* 106  Ins    */
 132    0xd3,      /* 107  Del    */
 133    0x9c,      /* 108  Enter  */
 134    0x9d,      /* 109  Ctrl-R */
 135    0x0,       /* 110  Pause  */
 136    0xb7,      /* 111  Print  */
 137    0xb5,      /* 112  Divide */
 138    0xb8,      /* 113  Alt-R  */
 139    0xc6,      /* 114  Break  */
 140    0x0,         /* 115 */
 141    0x0,         /* 116 */
 142    0x0,         /* 117 */
 143    0x0,         /* 118 */
 144    0x0,         /* 119 */
 145    0x70,         /* 120 Hiragana_Katakana */
 146    0x0,         /* 121 */
 147    0x0,         /* 122 */
 148    0x73,         /* 123 backslash */
 149    0x0,         /* 124 */
 150    0x0,         /* 125 */
 151    0x0,         /* 126 */
 152    0x0,         /* 127 */
 153    0x0,         /* 128 */
 154    0x79,         /* 129 Henkan */
 155    0x0,         /* 130 */
 156    0x7b,         /* 131 Muhenkan */
 157    0x0,         /* 132 */
 158    0x7d,         /* 133 Yen */
 159    0x0,         /* 134 */
 160    0x0,         /* 135 */
 161    0x47,         /* 136 KP_7 */
 162    0x48,         /* 137 KP_8 */
 163    0x49,         /* 138 KP_9 */
 164    0x4b,         /* 139 KP_4 */
 165    0x4c,         /* 140 KP_5 */
 166    0x4d,         /* 141 KP_6 */
 167    0x4f,         /* 142 KP_1 */
 168    0x50,         /* 143 KP_2 */
 169    0x51,         /* 144 KP_3 */
 170    0x52,         /* 145 KP_0 */
 171    0x53,         /* 146 KP_. */
 172    0x47,         /* 147 KP_HOME */
 173    0x48,         /* 148 KP_UP */
 174    0x49,         /* 149 KP_PgUp */
 175    0x4b,         /* 150 KP_Left */
 176    0x4c,         /* 151 KP_ */
 177    0x4d,         /* 152 KP_Right */
 178    0x4f,         /* 153 KP_End */
 179    0x50,         /* 154 KP_Down */
 180    0x51,         /* 155 KP_PgDn */
 181    0x52,         /* 156 KP_Ins */
 182    0x53,         /* 157 KP_Del */
 183 };
 184
 185 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 186 {
 187     int keycode;
 188
 189     keycode = ev->keysym.scancode;
 190
 191     if (keycode < 9) {
 192         keycode = 0;
 193     } else if (keycode < 97) {
 194         keycode -= 8; /* just an offset */
 195     } else if (keycode < 158) {
 196         /* use conversion table */
 197         keycode = x_keycode_to_pc_keycode[keycode - 97];
 198     } else {
 199         keycode = 0;
 200     }
 201     return keycode;
 202 }
 203
 204 #endif
 205
 206 static void reset_keys(void)
 207 {
 208     int i;
 209     for(i = 0; i < 256; i++) {
 210         if (modifiers_state[i]) {
 211             if (i & 0x80)
 212                 kbd_put_keycode(0xe0);
 213             kbd_put_keycode(i | 0x80);
 214             modifiers_state[i] = 0;
 215         }
 216     }
 217 }
 218
 219 static void sdl_process_key(SDL_KeyboardEvent *ev)
 220 {
 221     int keycode, v;
 222
 223     if (ev->keysym.sym == SDLK_PAUSE) {
 224         /* specific case */
 225         v = 0;
 226         if (ev->type == SDL_KEYUP)
 227             v |= 0x80;
 228         kbd_put_keycode(0xe1);
 229         kbd_put_keycode(0x1d | v);
 230         kbd_put_keycode(0x45 | v);
 231         return;
 232     }
 233
 234     if (kbd_layout) {
 235         keycode = sdl_keyevent_to_keycode_generic(ev);
 236     } else {
 237         keycode = sdl_keyevent_to_keycode(ev);
 238     }
 239
 240     switch(keycode) {
 241     case 0x00:
 242         /* sent when leaving window: reset the modifiers state */
 243         reset_keys();
 244         return;
 245     case 0x2a:                          /* Left Shift */
 246     case 0x36:                          /* Right Shift */
 247     case 0x1d:                          /* Left CTRL */
 248     case 0x9d:                          /* Right CTRL */
 249     case 0x38:                          /* Left ALT */
 250     case 0xb8:                         /* Right ALT */
 251         if (ev->type == SDL_KEYUP)
 252             modifiers_state[keycode] = 0;
 253         else
 254             modifiers_state[keycode] = 1;
 255         break;
 256     case 0x45: /* num lock */
 257     case 0x3a: /* caps lock */
 258         /* SDL does not send the key up event, so we generate it */
 259         kbd_put_keycode(keycode);
 260         kbd_put_keycode(keycode | 0x80);
 261         return;
 262     }
 263
 264     /* now send the key code */
 265     if (keycode & 0x80)
 266         kbd_put_keycode(0xe0);
 267     if (ev->type == SDL_KEYUP)
 268         kbd_put_keycode(keycode | 0x80);
 269     else
 270         kbd_put_keycode(keycode & 0x7f);
 271 }
 272
 273 static void sdl_update_caption(void)
 274 {
 275     char buf[1024];
 276     strcpy(buf, "QEMU");
 277     if (!vm_running) {
 278         strcat(buf, " [Stopped]");
 279     }
 280     if (gui_grab) {
 281         strcat(buf, " - Press Ctrl-Alt to exit grab");
 282     }
 283     SDL_WM_SetCaption(buf, "QEMU");
 284 }
 285
 286 static void sdl_hide_cursor(void)
 287 {
 288     SDL_SetCursor(sdl_cursor_hidden);
 289 }
 290
 291 static void sdl_show_cursor(void)
 292 {
 293     if (!kbd_mouse_is_absolute()) {
 294         SDL_SetCursor(sdl_cursor_normal);
 295     }
 296 }
 297
 298 static void sdl_grab_start(void)
 299 {
 300     sdl_hide_cursor();
 301     SDL_WM_GrabInput(SDL_GRAB_ON);
 302     /* dummy read to avoid moving the mouse */
 303     SDL_GetRelativeMouseState(NULL, NULL);
 304     gui_grab = 1;
 305     sdl_update_caption();
 306 }
 307
 308 static void sdl_grab_end(void)
 309 {
 310     SDL_WM_GrabInput(SDL_GRAB_OFF);
 311     sdl_show_cursor();
 312     gui_grab = 0;
 313     sdl_update_caption();
 314 }
 315
 316 static void sdl_send_mouse_event(int dz)
 317 {
 318     int dx, dy, state, buttons;
 319     state = SDL_GetRelativeMouseState(&dx, &dy);
 320     buttons = 0;
 321     if (state & SDL_BUTTON(SDL_BUTTON_LEFT))
 322         buttons |= MOUSE_EVENT_LBUTTON;
 323     if (state & SDL_BUTTON(SDL_BUTTON_RIGHT))
 324         buttons |= MOUSE_EVENT_RBUTTON;
 325     if (state & SDL_BUTTON(SDL_BUTTON_MIDDLE))
 326         buttons |= MOUSE_EVENT_MBUTTON;
 327
 328     if (kbd_mouse_is_absolute()) {
 329         if (!absolute_enabled) {
 330             sdl_hide_cursor();
 331             if (gui_grab) {
 332                 sdl_grab_end();
 333             }
 334             absolute_enabled = 1;
 335         }
 336
 337         SDL_GetMouseState(&dx, &dy);
 338         dx = dx * 0x7FFF / width;
 339         dy = dy * 0x7FFF / height;
 340     }
 341
 342     kbd_mouse_event(dx, dy, dz, buttons);
 343 }
 344
 345 static void toggle_full_screen(DisplayState *ds)
 346 {
 347     gui_fullscreen = !gui_fullscreen;
 348     sdl_resize(ds, screen->w, screen->h);
 349     if (gui_fullscreen) {
 350         gui_saved_grab = gui_grab;
 351         sdl_grab_start();
 352     } else {
 353         if (!gui_saved_grab)
 354             sdl_grab_end();
 355     }
 356     vga_hw_invalidate();
 357     vga_hw_update();
 358 }
 359
 360 static void sdl_refresh(DisplayState *ds)
 361 {
 362     SDL_Event ev1, *ev = &ev1;
 363     int mod_state;
 364
 365     if (last_vm_running != vm_running) {
 366         last_vm_running = vm_running;
 367         sdl_update_caption();
 368     }
 369
 370     vga_hw_update();
 371
 372     while (SDL_PollEvent(ev)) {
 373         switch (ev->type) {
 374         case SDL_VIDEOEXPOSE:
 375             sdl_update(ds, 0, 0, screen->w, screen->h);
 376             break;
 377         case SDL_KEYDOWN:
 378         case SDL_KEYUP:
 379             if (ev->type == SDL_KEYDOWN) {
 380                 mod_state = (SDL_GetModState() & gui_grab_code) ==
 381                     gui_grab_code;
 382                 gui_key_modifier_pressed = mod_state;
 383                 if (gui_key_modifier_pressed) {
 384                     int keycode;
 385                     keycode = sdl_keyevent_to_keycode(&ev->key);
 386                     switch(keycode) {
 387                     case 0x21: /* 'f' key on US keyboard */
 388                         toggle_full_screen(ds);
 389                         gui_keysym = 1;
 390                         break;
 391                     case 0x02 ... 0x0a: /* '1' to '9' keys */
 392                         console_select(keycode - 0x02);
 393                         if (!is_graphic_console()) {
 394                             /* display grab if going to a text console */
 395                             if (gui_grab)
 396                                 sdl_grab_end();
 397                         }
 398                         gui_keysym = 1;
 399                         break;
 400                     default:
 401                         break;
 402                     }
 403                 } else if (!is_graphic_console()) {
 404                     int keysym;
 405                     keysym = 0;
 406                     if (ev->key.keysym.mod & (KMOD_LCTRL | KMOD_RCTRL)) {
 407                         switch(ev->key.keysym.sym) {
 408                         case SDLK_UP: keysym = QEMU_KEY_CTRL_UP; break;
 409                         case SDLK_DOWN: keysym = QEMU_KEY_CTRL_DOWN; break;
 410                         case SDLK_LEFT: keysym = QEMU_KEY_CTRL_LEFT; break;
 411                         case SDLK_RIGHT: keysym = QEMU_KEY_CTRL_RIGHT; break;
 412                         case SDLK_HOME: keysym = QEMU_KEY_CTRL_HOME; break;
 413                         case SDLK_END: keysym = QEMU_KEY_CTRL_END; break;
 414                         case SDLK_PAGEUP: keysym = QEMU_KEY_CTRL_PAGEUP; break;
 415                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_CTRL_PAGEDOWN; break;
 416                         default: break;
 417                         }
 418                     } else {
 419                         switch(ev->key.keysym.sym) {
 420                         case SDLK_UP: keysym = QEMU_KEY_UP; break;
 421                         case SDLK_DOWN: keysym = QEMU_KEY_DOWN; break;
 422                         case SDLK_LEFT: keysym = QEMU_KEY_LEFT; break;
 423                         case SDLK_RIGHT: keysym = QEMU_KEY_RIGHT; break;
 424                         case SDLK_HOME: keysym = QEMU_KEY_HOME; break;
 425                         case SDLK_END: keysym = QEMU_KEY_END; break;
 426                         case SDLK_PAGEUP: keysym = QEMU_KEY_PAGEUP; break;
 427                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_PAGEDOWN; break;
 428                         case SDLK_BACKSPACE: keysym = QEMU_KEY_BACKSPACE; break;                        case SDLK_DELETE: keysym = QEMU_KEY_DELETE; break;
 429                         default: break;
 430                         }
 431                     }
 432                     if (keysym) {
 433                         kbd_put_keysym(keysym);
 434                     } else if (ev->key.keysym.unicode != 0) {
 435                         kbd_put_keysym(ev->key.keysym.unicode);
 436                     }
 437                 }
 438             } else if (ev->type == SDL_KEYUP) {
 439                 mod_state = (ev->key.keysym.mod & gui_grab_code);
 440                 if (!mod_state) {
 441                     if (gui_key_modifier_pressed) {
 442                         gui_key_modifier_pressed = 0;
 443                         if (gui_keysym == 0) {
 444                             /* exit/enter grab if pressing Ctrl-Alt */
 445                             if (!gui_grab)
 446                                 sdl_grab_start();
 447                             else
 448                                 sdl_grab_end();
 449                             /* SDL does not send back all the
 450                                modifiers key, so we must correct it */
 451                             reset_keys();
 452                             break;
 453                         }
 454                         gui_keysym = 0;
 455                     }
 456                 }
 457             }
 458             if (is_graphic_console())
 459                 sdl_process_key(&ev->key);
 460             break;
 461         case SDL_QUIT:
 462             qemu_system_shutdown_request();
 463             break;
 464         case SDL_MOUSEMOTION:
 465             if (gui_grab || kbd_mouse_is_absolute()) {
 466                 sdl_send_mouse_event(0);
 467             }
 468             break;
 469         case SDL_MOUSEBUTTONDOWN:
 470         case SDL_MOUSEBUTTONUP:
 471             {
 472                 SDL_MouseButtonEvent *bev = &ev->button;
 473                 if (!gui_grab && !kbd_mouse_is_absolute()) {
 474                     if (ev->type == SDL_MOUSEBUTTONDOWN &&
 475                         (bev->state & SDL_BUTTON_LMASK)) {
 476                         /* start grabbing all events */
 477                         sdl_grab_start();
 478                     }
 479                 } else {
 480                     int dz;
 481                     dz = 0;
 482 #ifdef SDL_BUTTON_WHEELUP
 483                     if (bev->button == SDL_BUTTON_WHEELUP && ev->type == SDL_MOUSEBUTTONDOWN) {
 484                         dz = -1;
 485                     } else if (bev->button == SDL_BUTTON_WHEELDOWN && ev->type == SDL_MOUSEBUTTONDOWN) {
 486                         dz = 1;
 487                     }
 488 #endif
 489                     sdl_send_mouse_event(dz);
 490                 }
 491             }
 492             break;
 493         case SDL_ACTIVEEVENT:
 494             if (gui_grab && ev->active.state == SDL_APPINPUTFOCUS &&
 495                 !ev->active.gain && !gui_fullscreen_initial_grab) {
 496                 sdl_grab_end();
 497             }
 498             break;
 499         default:
 500             break;
 501         }
 502     }
 503 }
 504
 505 static void sdl_cleanup(void)
 506 {
 507     SDL_Quit();
 508 }
 509
 510 void sdl_display_init(DisplayState *ds, int full_screen)
 511 {
 512     int flags;
 513     uint8_t data = 0;
 514
 515 #if defined(__APPLE__)
 516     /* always use generic keymaps */
 517     if (!keyboard_layout)
 518         keyboard_layout = "en-us";
 519 #endif
 520     if(keyboard_layout) {
 521         kbd_layout = init_keyboard_layout(keyboard_layout);
 522         if (!kbd_layout)
 523             exit(1);
 524     }
 525
 526     flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
 527     if (SDL_Init (flags)) {
 528         fprintf(stderr, "Could not initialize SDL - exiting\n");
 529         exit(1);
 530     }
 531 #ifndef _WIN32
 532     /* NOTE: we still want Ctrl-C to work, so we undo the SDL redirections */
 533     signal(SIGINT, SIG_DFL);
 534     signal(SIGQUIT, SIG_DFL);
 535 #endif
 536
 537     ds->dpy_update = sdl_update;
 538     ds->dpy_resize = sdl_resize;
 539     ds->dpy_refresh = sdl_refresh;
 540
 541     sdl_resize(ds, 640, 400);
 542     sdl_update_caption();
 543     SDL_EnableKeyRepeat(250, 50);
 544     SDL_EnableUNICODE(1);
 545     gui_grab = 0;
 546
 547     sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
 548     sdl_cursor_normal = SDL_GetCursor();
 549
 550     atexit(sdl_cleanup);
 551     if (full_screen) {
 552         gui_fullscreen = 1;
 553         gui_fullscreen_initial_grab = 1;
 554         sdl_grab_start();
 555     }
 556 }