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
  43 static void sdl_update(DisplayState *ds, int x, int y, int w, int h)
  44 {
  45     //    printf("updating x=%d y=%d w=%d h=%d\n", x, y, w, h);
  46     SDL_UpdateRect(screen, x, y, w, h);
  47 }
  48
  49 static void sdl_resize(DisplayState *ds, int w, int h)
  50 {
  51     int flags;
  52
  53     //    printf("resizing to %d %d\n", w, h);
  54
  55     flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
  56     if (gui_fullscreen)
  57         flags |= SDL_FULLSCREEN;
  58     screen = SDL_SetVideoMode(w, h, 0, flags);
  59     if (!screen) {
  60         fprintf(stderr, "Could not open SDL display\n");
  61         exit(1);
  62     }
  63     ds->data = screen->pixels;
  64     ds->linesize = screen->pitch;
  65     ds->depth = screen->format->BitsPerPixel;
  66     ds->width = w;
  67     ds->height = h;
  68 }
  69
  70 /* generic keyboard conversion */
  71
  72 #include "sdl_keysym.h"
  73 #include "keymaps.c"
  74
  75 static kbd_layout_t *kbd_layout = NULL;
  76
  77 static uint8_t sdl_keyevent_to_keycode_generic(const SDL_KeyboardEvent *ev)
  78 {
  79     int keysym;
  80     /* workaround for X11+SDL bug with AltGR */
  81     keysym = ev->keysym.sym;
  82     if (keysym == 0 && ev->keysym.scancode == 113)
  83         keysym = SDLK_MODE;
  84     return keysym2scancode(kbd_layout, keysym);
  85 }
  86
  87 /* specific keyboard conversions from scan codes */
  88
  89 #if defined(_WIN32)
  90
  91 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
  92 {
  93     return ev->keysym.scancode;
  94 }
  95
  96 #else
  97
  98 static const uint8_t x_keycode_to_pc_keycode[61] = {
  99    0xc7,      /*  97  Home   */
 100    0xc8,      /*  98  Up     */
 101    0xc9,      /*  99  PgUp   */
 102    0xcb,      /* 100  Left   */
 103    0x4c,        /* 101  KP-5   */
 104    0xcd,      /* 102  Right  */
 105    0xcf,      /* 103  End    */
 106    0xd0,      /* 104  Down   */
 107    0xd1,      /* 105  PgDn   */
 108    0xd2,      /* 106  Ins    */
 109    0xd3,      /* 107  Del    */
 110    0x9c,      /* 108  Enter  */
 111    0x9d,      /* 109  Ctrl-R */
 112    0x0,       /* 110  Pause  */
 113    0xb7,      /* 111  Print  */
 114    0xb5,      /* 112  Divide */
 115    0xb8,      /* 113  Alt-R  */
 116    0xc6,      /* 114  Break  */
 117    0x0,         /* 115 */
 118    0x0,         /* 116 */
 119    0x0,         /* 117 */
 120    0x0,         /* 118 */
 121    0x0,         /* 119 */
 122    0x70,         /* 120 Hiragana_Katakana */
 123    0x0,         /* 121 */
 124    0x0,         /* 122 */
 125    0x73,         /* 123 backslash */
 126    0x0,         /* 124 */
 127    0x0,         /* 125 */
 128    0x0,         /* 126 */
 129    0x0,         /* 127 */
 130    0x0,         /* 128 */
 131    0x79,         /* 129 Henkan */
 132    0x0,         /* 130 */
 133    0x7b,         /* 131 Muhenkan */
 134    0x0,         /* 132 */
 135    0x7d,         /* 133 Yen */
 136    0x0,         /* 134 */
 137    0x0,         /* 135 */
 138    0x47,         /* 136 KP_7 */
 139    0x48,         /* 137 KP_8 */
 140    0x49,         /* 138 KP_9 */
 141    0x4b,         /* 139 KP_4 */
 142    0x4c,         /* 140 KP_5 */
 143    0x4d,         /* 141 KP_6 */
 144    0x4f,         /* 142 KP_1 */
 145    0x50,         /* 143 KP_2 */
 146    0x51,         /* 144 KP_3 */
 147    0x52,         /* 145 KP_0 */
 148    0x53,         /* 146 KP_. */
 149    0x47,         /* 147 KP_HOME */
 150    0x48,         /* 148 KP_UP */
 151    0x49,         /* 149 KP_PgUp */
 152    0x4b,         /* 150 KP_Left */
 153    0x4c,         /* 151 KP_ */
 154    0x4d,         /* 152 KP_Right */
 155    0x4f,         /* 153 KP_End */
 156    0x50,         /* 154 KP_Down */
 157    0x51,         /* 155 KP_PgDn */
 158    0x52,         /* 156 KP_Ins */
 159    0x53,         /* 157 KP_Del */
 160 };
 161
 162 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 163 {
 164     int keycode;
 165
 166     keycode = ev->keysym.scancode;
 167
 168     if (keycode < 9) {
 169         keycode = 0;
 170     } else if (keycode < 97) {
 171         keycode -= 8; /* just an offset */
 172     } else if (keycode < 158) {
 173         /* use conversion table */
 174         keycode = x_keycode_to_pc_keycode[keycode - 97];
 175     } else {
 176         keycode = 0;
 177     }
 178     return keycode;
 179 }
 180
 181 #endif
 182
 183 static void reset_keys(void)
 184 {
 185     int i;
 186     for(i = 0; i < 256; i++) {
 187         if (modifiers_state[i]) {
 188             if (i & 0x80)
 189                 kbd_put_keycode(0xe0);
 190             kbd_put_keycode(i | 0x80);
 191             modifiers_state[i] = 0;
 192         }
 193     }
 194 }
 195
 196 static void sdl_process_key(SDL_KeyboardEvent *ev)
 197 {
 198     int keycode, v;
 199
 200     if (ev->keysym.sym == SDLK_PAUSE) {
 201         /* specific case */
 202         v = 0;
 203         if (ev->type == SDL_KEYUP)
 204             v |= 0x80;
 205         kbd_put_keycode(0xe1);
 206         kbd_put_keycode(0x1d | v);
 207         kbd_put_keycode(0x45 | v);
 208         return;
 209     }
 210
 211     if (kbd_layout) {
 212         keycode = sdl_keyevent_to_keycode_generic(ev);
 213     } else {
 214         keycode = sdl_keyevent_to_keycode(ev);
 215     }
 216
 217     switch(keycode) {
 218     case 0x00:
 219         /* sent when leaving window: reset the modifiers state */
 220         reset_keys();
 221         return;
 222     case 0x2a:                          /* Left Shift */
 223     case 0x36:                          /* Right Shift */
 224     case 0x1d:                          /* Left CTRL */
 225     case 0x9d:                          /* Right CTRL */
 226     case 0x38:                          /* Left ALT */
 227     case 0xb8:                         /* Right ALT */
 228         if (ev->type == SDL_KEYUP)
 229             modifiers_state[keycode] = 0;
 230         else
 231             modifiers_state[keycode] = 1;
 232         break;
 233     case 0x45: /* num lock */
 234     case 0x3a: /* caps lock */
 235         /* SDL does not send the key up event, so we generate it */
 236         kbd_put_keycode(keycode);
 237         kbd_put_keycode(keycode | 0x80);
 238         return;
 239     }
 240
 241     /* now send the key code */
 242     if (keycode & 0x80)
 243         kbd_put_keycode(0xe0);
 244     if (ev->type == SDL_KEYUP)
 245         kbd_put_keycode(keycode | 0x80);
 246     else
 247         kbd_put_keycode(keycode & 0x7f);
 248 }
 249
 250 static void sdl_update_caption(void)
 251 {
 252     char buf[1024];
 253     strcpy(buf, "QEMU");
 254     if (!vm_running) {
 255         strcat(buf, " [Stopped]");
 256     }
 257     if (gui_grab) {
 258         strcat(buf, " - Press Ctrl-Alt to exit grab");
 259     }
 260     SDL_WM_SetCaption(buf, "QEMU");
 261 }
 262
 263 static void sdl_grab_start(void)
 264 {
 265     SDL_ShowCursor(0);
 266     SDL_WM_GrabInput(SDL_GRAB_ON);
 267     /* dummy read to avoid moving the mouse */
 268     SDL_GetRelativeMouseState(NULL, NULL);
 269     gui_grab = 1;
 270     sdl_update_caption();
 271 }
 272
 273 static void sdl_grab_end(void)
 274 {
 275     SDL_WM_GrabInput(SDL_GRAB_OFF);
 276     SDL_ShowCursor(1);
 277     gui_grab = 0;
 278     sdl_update_caption();
 279 }
 280
 281 static void sdl_send_mouse_event(int dz)
 282 {
 283     int dx, dy, state, buttons;
 284     state = SDL_GetRelativeMouseState(&dx, &dy);
 285     buttons = 0;
 286     if (state & SDL_BUTTON(SDL_BUTTON_LEFT))
 287         buttons |= MOUSE_EVENT_LBUTTON;
 288     if (state & SDL_BUTTON(SDL_BUTTON_RIGHT))
 289         buttons |= MOUSE_EVENT_RBUTTON;
 290     if (state & SDL_BUTTON(SDL_BUTTON_MIDDLE))
 291         buttons |= MOUSE_EVENT_MBUTTON;
 292     kbd_mouse_event(dx, dy, dz, buttons);
 293 }
 294
 295 static void toggle_full_screen(DisplayState *ds)
 296 {
 297     gui_fullscreen = !gui_fullscreen;
 298     sdl_resize(ds, screen->w, screen->h);
 299     if (gui_fullscreen) {
 300         gui_saved_grab = gui_grab;
 301         sdl_grab_start();
 302     } else {
 303         if (!gui_saved_grab)
 304             sdl_grab_end();
 305     }
 306     vga_invalidate_display();
 307     vga_update_display();
 308 }
 309
 310 static void sdl_refresh(DisplayState *ds)
 311 {
 312     SDL_Event ev1, *ev = &ev1;
 313     int mod_state;
 314
 315     if (last_vm_running != vm_running) {
 316         last_vm_running = vm_running;
 317         sdl_update_caption();
 318     }
 319
 320     if (is_active_console(vga_console))
 321         vga_update_display();
 322
 323     while (SDL_PollEvent(ev)) {
 324         switch (ev->type) {
 325         case SDL_VIDEOEXPOSE:
 326             sdl_update(ds, 0, 0, screen->w, screen->h);
 327             break;
 328         case SDL_KEYDOWN:
 329         case SDL_KEYUP:
 330             if (ev->type == SDL_KEYDOWN) {
 331                 mod_state = (SDL_GetModState() & gui_grab_code) ==
 332                     gui_grab_code;
 333                 gui_key_modifier_pressed = mod_state;
 334                 if (gui_key_modifier_pressed) {
 335                     int keycode;
 336                     keycode = sdl_keyevent_to_keycode(&ev->key);
 337                     switch(keycode) {
 338                     case 0x21: /* 'f' key on US keyboard */
 339                         toggle_full_screen(ds);
 340                         gui_keysym = 1;
 341                         break;
 342                     case 0x02 ... 0x0a: /* '1' to '9' keys */
 343                         console_select(keycode - 0x02);
 344                         if (is_active_console(vga_console)) {
 345                             /* tell the vga console to redisplay itself */
 346                             vga_invalidate_display();
 347                         } else {
 348                             /* display grab if going to a text console */
 349                             if (gui_grab)
 350                                 sdl_grab_end();
 351                         }
 352                         gui_keysym = 1;
 353                         break;
 354                     default:
 355                         break;
 356                     }
 357                 } else if (!is_active_console(vga_console)) {
 358                     int keysym;
 359                     keysym = 0;
 360                     if (ev->key.keysym.mod & (KMOD_LCTRL | KMOD_RCTRL)) {
 361                         switch(ev->key.keysym.sym) {
 362                         case SDLK_UP: keysym = QEMU_KEY_CTRL_UP; break;
 363                         case SDLK_DOWN: keysym = QEMU_KEY_CTRL_DOWN; break;
 364                         case SDLK_LEFT: keysym = QEMU_KEY_CTRL_LEFT; break;
 365                         case SDLK_RIGHT: keysym = QEMU_KEY_CTRL_RIGHT; break;
 366                         case SDLK_HOME: keysym = QEMU_KEY_CTRL_HOME; break;
 367                         case SDLK_END: keysym = QEMU_KEY_CTRL_END; break;
 368                         case SDLK_PAGEUP: keysym = QEMU_KEY_CTRL_PAGEUP; break;
 369                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_CTRL_PAGEDOWN; break;
 370                         default: break;
 371                         }
 372                     } else {
 373                         switch(ev->key.keysym.sym) {
 374                         case SDLK_UP: keysym = QEMU_KEY_UP; break;
 375                         case SDLK_DOWN: keysym = QEMU_KEY_DOWN; break;
 376                         case SDLK_LEFT: keysym = QEMU_KEY_LEFT; break;
 377                         case SDLK_RIGHT: keysym = QEMU_KEY_RIGHT; break;
 378                         case SDLK_HOME: keysym = QEMU_KEY_HOME; break;
 379                         case SDLK_END: keysym = QEMU_KEY_END; break;
 380                         case SDLK_PAGEUP: keysym = QEMU_KEY_PAGEUP; break;
 381                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_PAGEDOWN; break;
 382                         case SDLK_BACKSPACE: keysym = QEMU_KEY_BACKSPACE; break;                        case SDLK_DELETE: keysym = QEMU_KEY_DELETE; break;
 383                         default: break;
 384                         }
 385                     }
 386                     if (keysym) {
 387                         kbd_put_keysym(keysym);
 388                     } else if (ev->key.keysym.unicode != 0) {
 389                         kbd_put_keysym(ev->key.keysym.unicode);
 390                     }
 391                 }
 392             } else if (ev->type == SDL_KEYUP) {
 393                 mod_state = (ev->key.keysym.mod & gui_grab_code);
 394                 if (!mod_state) {
 395                     if (gui_key_modifier_pressed) {
 396                         if (gui_keysym == 0) {
 397                             /* exit/enter grab if pressing Ctrl-Alt */
 398                             if (!gui_grab)
 399                                 sdl_grab_start();
 400                             else
 401                                 sdl_grab_end();
 402                             /* SDL does not send back all the
 403                                modifiers key, so we must correct it */
 404                             reset_keys();
 405                             break;
 406                         }
 407                         gui_key_modifier_pressed = 0;
 408                         gui_keysym = 0;
 409                     }
 410                 }
 411             }
 412             if (is_active_console(vga_console))
 413                 sdl_process_key(&ev->key);
 414             break;
 415         case SDL_QUIT:
 416             qemu_system_shutdown_request();
 417             break;
 418         case SDL_MOUSEMOTION:
 419             if (gui_grab) {
 420                 sdl_send_mouse_event(0);
 421             }
 422             break;
 423         case SDL_MOUSEBUTTONDOWN:
 424         case SDL_MOUSEBUTTONUP:
 425             {
 426                 SDL_MouseButtonEvent *bev = &ev->button;
 427                 if (!gui_grab) {
 428                     if (ev->type == SDL_MOUSEBUTTONDOWN &&
 429                         (bev->state & SDL_BUTTON_LMASK)) {
 430                         /* start grabbing all events */
 431                         sdl_grab_start();
 432                     }
 433                 } else {
 434                     int dz;
 435                     dz = 0;
 436 #ifdef SDL_BUTTON_WHEELUP
 437                     if (bev->button == SDL_BUTTON_WHEELUP) {
 438                         dz = -1;
 439                     } else if (bev->button == SDL_BUTTON_WHEELDOWN) {
 440                         dz = 1;
 441                     }
 442 #endif
 443                     sdl_send_mouse_event(dz);
 444                 }
 445             }
 446             break;
 447         case SDL_ACTIVEEVENT:
 448             if (gui_grab && (ev->active.gain & SDL_ACTIVEEVENTMASK) == 0 &&
 449                 !gui_fullscreen_initial_grab) {
 450                 sdl_grab_end();
 451             }
 452             break;
 453         default:
 454             break;
 455         }
 456     }
 457 }
 458
 459 static void sdl_cleanup(void)
 460 {
 461     SDL_Quit();
 462 }
 463
 464 void sdl_display_init(DisplayState *ds, int full_screen)
 465 {
 466     int flags;
 467
 468 #if defined(__APPLE__)
 469     /* always use generic keymaps */
 470     if (!keyboard_layout)
 471         keyboard_layout = "en-us";
 472 #endif
 473     if(keyboard_layout) {
 474         kbd_layout = init_keyboard_layout(keyboard_layout);
 475         if (!kbd_layout)
 476             exit(1);
 477     }
 478
 479     flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
 480     if (SDL_Init (flags)) {
 481         fprintf(stderr, "Could not initialize SDL - exiting\n");
 482         exit(1);
 483     }
 484 #ifndef _WIN32
 485     /* NOTE: we still want Ctrl-C to work, so we undo the SDL redirections */
 486     signal(SIGINT, SIG_DFL);
 487     signal(SIGQUIT, SIG_DFL);
 488 #endif
 489
 490     ds->dpy_update = sdl_update;
 491     ds->dpy_resize = sdl_resize;
 492     ds->dpy_refresh = sdl_refresh;
 493
 494     sdl_resize(ds, 640, 400);
 495     sdl_update_caption();
 496     SDL_EnableKeyRepeat(250, 50);
 497     SDL_EnableUNICODE(1);
 498     gui_grab = 0;
 499
 500     atexit(sdl_cleanup);
 501     if (full_screen) {
 502         gui_fullscreen = 1;
 503         gui_fullscreen_initial_grab = 1;
 504         sdl_grab_start();
 505     }
 506 }