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 #if defined(__APPLE__)
  33 #define CONFIG_SDL_GENERIC_KBD
  34 #endif
  35
  36 static SDL_Surface *screen;
  37 static int gui_grab; /* if true, all keyboard/mouse events are grabbed */
  38 static int last_vm_running;
  39 static int gui_saved_grab;
  40 static int gui_fullscreen;
  41 static int gui_key_modifier_pressed;
  42 static int gui_keysym;
  43 static int gui_fullscreen_initial_grab;
  44 static int gui_grab_code = KMOD_LALT | KMOD_LCTRL;
  45 static uint8_t modifiers_state[256];
  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     flags |= SDL_RESIZABLE;
  61     if (gui_fullscreen)
  62         flags |= SDL_FULLSCREEN;
  63     screen = SDL_SetVideoMode(w, h, 0, flags);
  64     if (!screen) {
  65         fprintf(stderr, "Could not open SDL display\n");
  66         exit(1);
  67     }
  68     ds->data = screen->pixels;
  69     ds->linesize = screen->pitch;
  70     ds->depth = screen->format->BitsPerPixel;
  71     ds->width = w;
  72     ds->height = h;
  73 }
  74
  75 #ifdef CONFIG_SDL_GENERIC_KBD
  76
  77 /* XXX: use keymap tables defined in the VNC patch because the
  78    following code suppose you have a US keyboard. */
  79
  80 static const uint8_t scancodes[SDLK_LAST] = {
  81     [SDLK_ESCAPE]   = 0x01,
  82     [SDLK_1]        = 0x02,
  83     [SDLK_2]        = 0x03,
  84     [SDLK_3]        = 0x04,
  85     [SDLK_4]        = 0x05,
  86     [SDLK_5]        = 0x06,
  87     [SDLK_6]        = 0x07,
  88     [SDLK_7]        = 0x08,
  89     [SDLK_8]        = 0x09,
  90     [SDLK_9]        = 0x0a,
  91     [SDLK_0]        = 0x0b,
  92     [SDLK_MINUS]    = 0x0c,
  93     [SDLK_EQUALS]   = 0x0d,
  94     [SDLK_BACKSPACE]        = 0x0e,
  95     [SDLK_TAB]      = 0x0f,
  96     [SDLK_q]        = 0x10,
  97     [SDLK_w]        = 0x11,
  98     [SDLK_e]        = 0x12,
  99     [SDLK_r]        = 0x13,
 100     [SDLK_t]        = 0x14,
 101     [SDLK_y]        = 0x15,
 102     [SDLK_u]        = 0x16,
 103     [SDLK_i]        = 0x17,
 104     [SDLK_o]        = 0x18,
 105     [SDLK_p]        = 0x19,
 106     [SDLK_LEFTBRACKET]      = 0x1a,
 107     [SDLK_RIGHTBRACKET]     = 0x1b,
 108     [SDLK_RETURN]   = 0x1c,
 109     [SDLK_LCTRL]    = 0x1d,
 110     [SDLK_a]        = 0x1e,
 111     [SDLK_s]        = 0x1f,
 112     [SDLK_d]        = 0x20,
 113     [SDLK_f]        = 0x21,
 114     [SDLK_g]        = 0x22,
 115     [SDLK_h]        = 0x23,
 116     [SDLK_j]        = 0x24,
 117     [SDLK_k]        = 0x25,
 118     [SDLK_l]        = 0x26,
 119     [SDLK_SEMICOLON]        = 0x27,
 120     [SDLK_QUOTE]    = 0x28,
 121     [SDLK_BACKQUOTE]        = 0x29,
 122     [SDLK_LSHIFT]   = 0x2a,
 123     [SDLK_BACKSLASH]        = 0x2b,
 124     [SDLK_z]        = 0x2c,
 125     [SDLK_x]        = 0x2d,
 126     [SDLK_c]        = 0x2e,
 127     [SDLK_v]        = 0x2f,
 128     [SDLK_b]        = 0x30,
 129     [SDLK_n]        = 0x31,
 130     [SDLK_m]        = 0x32,
 131     [SDLK_COMMA]    = 0x33,
 132     [SDLK_PERIOD]   = 0x34,
 133     [SDLK_SLASH]    = 0x35,
 134     [SDLK_KP_MULTIPLY]      = 0x37,
 135     [SDLK_LALT]     = 0x38,
 136     [SDLK_SPACE]    = 0x39,
 137     [SDLK_CAPSLOCK] = 0x3a,
 138     [SDLK_F1]       = 0x3b,
 139     [SDLK_F2]       = 0x3c,
 140     [SDLK_F3]       = 0x3d,
 141     [SDLK_F4]       = 0x3e,
 142     [SDLK_F5]       = 0x3f,
 143     [SDLK_F6]       = 0x40,
 144     [SDLK_F7]       = 0x41,
 145     [SDLK_F8]       = 0x42,
 146     [SDLK_F9]       = 0x43,
 147     [SDLK_F10]      = 0x44,
 148     [SDLK_NUMLOCK]  = 0x45,
 149     [SDLK_SCROLLOCK]        = 0x46,
 150     [SDLK_KP7]      = 0x47,
 151     [SDLK_KP8]      = 0x48,
 152     [SDLK_KP9]      = 0x49,
 153     [SDLK_KP_MINUS] = 0x4a,
 154     [SDLK_KP4]      = 0x4b,
 155     [SDLK_KP5]      = 0x4c,
 156     [SDLK_KP6]      = 0x4d,
 157     [SDLK_KP_PLUS]  = 0x4e,
 158     [SDLK_KP1]      = 0x4f,
 159     [SDLK_KP2]      = 0x50,
 160     [SDLK_KP3]      = 0x51,
 161     [SDLK_KP0]      = 0x52,
 162     [SDLK_KP_PERIOD]        = 0x53,
 163     [SDLK_PRINT]    = 0x54,
 164     [SDLK_LMETA]    = 0x56,
 165
 166     [SDLK_KP_ENTER]  = 0x9c,
 167     [SDLK_KP_DIVIDE] = 0xb5,
 168
 169     [SDLK_UP]       = 0xc8,
 170     [SDLK_DOWN]     = 0xd0,
 171     [SDLK_RIGHT]    = 0xcd,
 172     [SDLK_LEFT]     = 0xcb,
 173     [SDLK_INSERT]   = 0xd2,
 174     [SDLK_HOME]     = 0xc7,
 175     [SDLK_END]      = 0xcf,
 176     [SDLK_PAGEUP]   = 0xc9,
 177     [SDLK_PAGEDOWN] = 0xd1,
 178     [SDLK_DELETE]   = 0xd3,
 179 };
 180
 181 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 182 {
 183     return scancodes[ev->keysym.sym];
 184 }
 185
 186 #elif defined(_WIN32)
 187
 188 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 189 {
 190     return ev->keysym.scancode;
 191 }
 192
 193 #else
 194
 195 static const uint8_t x_keycode_to_pc_keycode[61] = {
 196    0xc7,      /*  97  Home   */
 197    0xc8,      /*  98  Up     */
 198    0xc9,      /*  99  PgUp   */
 199    0xcb,      /* 100  Left   */
 200    0x4c,        /* 101  KP-5   */
 201    0xcd,      /* 102  Right  */
 202    0xcf,      /* 103  End    */
 203    0xd0,      /* 104  Down   */
 204    0xd1,      /* 105  PgDn   */
 205    0xd2,      /* 106  Ins    */
 206    0xd3,      /* 107  Del    */
 207    0x9c,      /* 108  Enter  */
 208    0x9d,      /* 109  Ctrl-R */
 209    0x0,       /* 110  Pause  */
 210    0xb7,      /* 111  Print  */
 211    0xb5,      /* 112  Divide */
 212    0xb8,      /* 113  Alt-R  */
 213    0xc6,      /* 114  Break  */
 214    0x0,         /* 115 */
 215    0x0,         /* 116 */
 216    0x0,         /* 117 */
 217    0x0,         /* 118 */
 218    0x0,         /* 119 */
 219    0x70,         /* 120 Hiragana_Katakana */
 220    0x0,         /* 121 */
 221    0x0,         /* 122 */
 222    0x73,         /* 123 backslash */
 223    0x0,         /* 124 */
 224    0x0,         /* 125 */
 225    0x0,         /* 126 */
 226    0x0,         /* 127 */
 227    0x0,         /* 128 */
 228    0x79,         /* 129 Henkan */
 229    0x0,         /* 130 */
 230    0x7b,         /* 131 Muhenkan */
 231    0x0,         /* 132 */
 232    0x7d,         /* 133 Yen */
 233    0x0,         /* 134 */
 234    0x0,         /* 135 */
 235    0x47,         /* 136 KP_7 */
 236    0x48,         /* 137 KP_8 */
 237    0x49,         /* 138 KP_9 */
 238    0x4b,         /* 139 KP_4 */
 239    0x4c,         /* 140 KP_5 */
 240    0x4d,         /* 141 KP_6 */
 241    0x4f,         /* 142 KP_1 */
 242    0x50,         /* 143 KP_2 */
 243    0x51,         /* 144 KP_3 */
 244    0x52,         /* 145 KP_0 */
 245    0x53,         /* 146 KP_. */
 246    0x47,         /* 147 KP_HOME */
 247    0x48,         /* 148 KP_UP */
 248    0x49,         /* 149 KP_PgUp */
 249    0x4b,         /* 150 KP_Left */
 250    0x4c,         /* 151 KP_ */
 251    0x4d,         /* 152 KP_Right */
 252    0x4f,         /* 153 KP_End */
 253    0x50,         /* 154 KP_Down */
 254    0x51,         /* 155 KP_PgDn */
 255    0x52,         /* 156 KP_Ins */
 256    0x53,         /* 157 KP_Del */
 257 };
 258
 259 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 260 {
 261     int keycode;
 262
 263     keycode = ev->keysym.scancode;
 264
 265     if (keycode < 9) {
 266         keycode = 0;
 267     } else if (keycode < 97) {
 268         keycode -= 8; /* just an offset */
 269     } else if (keycode < 158) {
 270         /* use conversion table */
 271         keycode = x_keycode_to_pc_keycode[keycode - 97];
 272     } else {
 273         keycode = 0;
 274     }
 275     return keycode;
 276 }
 277
 278 #endif
 279
 280 static void reset_keys(void)
 281 {
 282     int i;
 283     for(i = 0; i < 256; i++) {
 284         if (modifiers_state[i]) {
 285             if (i & 0x80)
 286                 kbd_put_keycode(0xe0);
 287             kbd_put_keycode(i | 0x80);
 288             modifiers_state[i] = 0;
 289         }
 290     }
 291 }
 292
 293 static void sdl_process_key(SDL_KeyboardEvent *ev)
 294 {
 295     int keycode, v;
 296
 297     if (ev->keysym.sym == SDLK_PAUSE) {
 298         /* specific case */
 299         v = 0;
 300         if (ev->type == SDL_KEYUP)
 301             v |= 0x80;
 302         kbd_put_keycode(0xe1);
 303         kbd_put_keycode(0x1d | v);
 304         kbd_put_keycode(0x45 | v);
 305         return;
 306     }
 307
 308     /* XXX: not portable, but avoids complicated mappings */
 309     keycode = sdl_keyevent_to_keycode(ev);
 310
 311     switch(keycode) {
 312     case 0x00:
 313         /* sent when leaving window: reset the modifiers state */
 314         reset_keys();
 315         return;
 316     case 0x2a:                          /* Left Shift */
 317     case 0x36:                          /* Right Shift */
 318     case 0x1d:                          /* Left CTRL */
 319     case 0x9d:                          /* Right CTRL */
 320     case 0x38:                          /* Left ALT */
 321     case 0xb8:                         /* Right ALT */
 322         if (ev->type == SDL_KEYUP)
 323             modifiers_state[keycode] = 0;
 324         else
 325             modifiers_state[keycode] = 1;
 326         break;
 327     case 0x45: /* num lock */
 328     case 0x3a: /* caps lock */
 329         /* SDL does not send the key up event, so we generate it */
 330         kbd_put_keycode(keycode);
 331         kbd_put_keycode(keycode | 0x80);
 332         return;
 333     }
 334
 335     /* now send the key code */
 336     if (keycode & 0x80)
 337         kbd_put_keycode(0xe0);
 338     if (ev->type == SDL_KEYUP)
 339         kbd_put_keycode(keycode | 0x80);
 340     else
 341         kbd_put_keycode(keycode & 0x7f);
 342 }
 343
 344 static void sdl_update_caption(void)
 345 {
 346     char buf[1024];
 347     strcpy(buf, "QEMU");
 348     if (!vm_running) {
 349         strcat(buf, " [Stopped]");
 350     }
 351     if (gui_grab) {
 352         strcat(buf, " - Press Ctrl-Alt to exit grab");
 353     }
 354     SDL_WM_SetCaption(buf, "QEMU");
 355 }
 356
 357 static void sdl_grab_start(void)
 358 {
 359     SDL_ShowCursor(0);
 360     SDL_WM_GrabInput(SDL_GRAB_ON);
 361     /* dummy read to avoid moving the mouse */
 362     SDL_GetRelativeMouseState(NULL, NULL);
 363     gui_grab = 1;
 364     sdl_update_caption();
 365 }
 366
 367 static void sdl_grab_end(void)
 368 {
 369     SDL_WM_GrabInput(SDL_GRAB_OFF);
 370     SDL_ShowCursor(1);
 371     gui_grab = 0;
 372     sdl_update_caption();
 373 }
 374
 375 static void sdl_send_mouse_event(void)
 376 {
 377     int dx, dy, dz, state, buttons;
 378     state = SDL_GetRelativeMouseState(&dx, &dy);
 379     buttons = 0;
 380     if (state & SDL_BUTTON(SDL_BUTTON_LEFT))
 381         buttons |= MOUSE_EVENT_LBUTTON;
 382     if (state & SDL_BUTTON(SDL_BUTTON_RIGHT))
 383         buttons |= MOUSE_EVENT_RBUTTON;
 384     if (state & SDL_BUTTON(SDL_BUTTON_MIDDLE))
 385         buttons |= MOUSE_EVENT_MBUTTON;
 386     /* XXX: test wheel */
 387     dz = 0;
 388 #ifdef SDL_BUTTON_WHEELUP
 389     if (state & SDL_BUTTON(SDL_BUTTON_WHEELUP))
 390         dz--;
 391     if (state & SDL_BUTTON(SDL_BUTTON_WHEELDOWN))
 392         dz++;
 393 #endif
 394     kbd_mouse_event(dx, dy, dz, buttons);
 395 }
 396
 397 static void toggle_full_screen(DisplayState *ds)
 398 {
 399     gui_fullscreen = !gui_fullscreen;
 400     sdl_resize(ds, screen->w, screen->h);
 401     if (gui_fullscreen) {
 402         gui_saved_grab = gui_grab;
 403         sdl_grab_start();
 404     } else {
 405         if (!gui_saved_grab)
 406             sdl_grab_end();
 407     }
 408     vga_invalidate_display();
 409     vga_update_display();
 410 }
 411
 412 static void sdl_refresh(DisplayState *ds)
 413 {
 414     SDL_Event ev1, *ev = &ev1;
 415     int mod_state;
 416
 417     if (last_vm_running != vm_running) {
 418         last_vm_running = vm_running;
 419         sdl_update_caption();
 420     }
 421
 422     if (is_active_console(vga_console))
 423         vga_update_display();
 424
 425     while (SDL_PollEvent(ev)) {
 426         switch (ev->type) {
 427         case SDL_VIDEOEXPOSE:
 428             sdl_update(ds, 0, 0, screen->w, screen->h);
 429             break;
 430         case SDL_KEYDOWN:
 431         case SDL_KEYUP:
 432             if (ev->type == SDL_KEYDOWN) {
 433                 mod_state = (SDL_GetModState() & gui_grab_code) ==
 434                     gui_grab_code;
 435                 gui_key_modifier_pressed = mod_state;
 436                 if (gui_key_modifier_pressed) {
 437                     int keycode;
 438                     keycode = sdl_keyevent_to_keycode(&ev->key);
 439                     switch(keycode) {
 440                     case 0x21: /* 'f' key on US keyboard */
 441                         toggle_full_screen(ds);
 442                         gui_keysym = 1;
 443                         break;
 444                     case 0x02 ... 0x0a: /* '1' to '9' keys */
 445                         console_select(keycode - 0x02);
 446                         if (is_active_console(vga_console)) {
 447                             /* tell the vga console to redisplay itself */
 448                             vga_invalidate_display();
 449                         } else {
 450                             /* display grab if going to a text console */
 451                             if (gui_grab)
 452                                 sdl_grab_end();
 453                         }
 454                         gui_keysym = 1;
 455                         break;
 456                     default:
 457                         break;
 458                     }
 459                 } else if (!is_active_console(vga_console)) {
 460                     int keysym;
 461                     keysym = 0;
 462                     if (ev->key.keysym.mod & (KMOD_LCTRL | KMOD_RCTRL)) {
 463                         switch(ev->key.keysym.sym) {
 464                         case SDLK_UP: keysym = QEMU_KEY_CTRL_UP; break;
 465                         case SDLK_DOWN: keysym = QEMU_KEY_CTRL_DOWN; break;
 466                         case SDLK_LEFT: keysym = QEMU_KEY_CTRL_LEFT; break;
 467                         case SDLK_RIGHT: keysym = QEMU_KEY_CTRL_RIGHT; break;
 468                         case SDLK_HOME: keysym = QEMU_KEY_CTRL_HOME; break;
 469                         case SDLK_END: keysym = QEMU_KEY_CTRL_END; break;
 470                         case SDLK_PAGEUP: keysym = QEMU_KEY_CTRL_PAGEUP; break;
 471                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_CTRL_PAGEDOWN; break;
 472                         default: break;
 473                         }
 474                     } else {
 475                         switch(ev->key.keysym.sym) {
 476                         case SDLK_UP: keysym = QEMU_KEY_UP; break;
 477                         case SDLK_DOWN: keysym = QEMU_KEY_DOWN; break;
 478                         case SDLK_LEFT: keysym = QEMU_KEY_LEFT; break;
 479                         case SDLK_RIGHT: keysym = QEMU_KEY_RIGHT; break;
 480                         case SDLK_HOME: keysym = QEMU_KEY_HOME; break;
 481                         case SDLK_END: keysym = QEMU_KEY_END; break;
 482                         case SDLK_PAGEUP: keysym = QEMU_KEY_PAGEUP; break;
 483                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_PAGEDOWN; break;
 484                         case SDLK_BACKSPACE: keysym = QEMU_KEY_BACKSPACE; break;                        case SDLK_DELETE: keysym = QEMU_KEY_DELETE; break;
 485                         default: break;
 486                         }
 487                     }
 488                     if (keysym) {
 489                         kbd_put_keysym(keysym);
 490                     } else if (ev->key.keysym.unicode != 0) {
 491                         kbd_put_keysym(ev->key.keysym.unicode);
 492                     }
 493                 }
 494             } else if (ev->type == SDL_KEYUP) {
 495                 mod_state = (SDL_GetModState() & gui_grab_code);
 496                 if (!mod_state) {
 497                     if (gui_key_modifier_pressed) {
 498                         if (gui_keysym == 0) {
 499                             /* exit/enter grab if pressing Ctrl-Alt */
 500                             if (!gui_grab)
 501                                 sdl_grab_start();
 502                             else
 503                                 sdl_grab_end();
 504                             /* SDL does not send back all the
 505                                modifiers key, so we must correct it */
 506                             reset_keys();
 507                             break;
 508                         }
 509                         gui_key_modifier_pressed = 0;
 510                         gui_keysym = 0;
 511                     }
 512                 }
 513             }
 514             if (is_active_console(vga_console))
 515                 sdl_process_key(&ev->key);
 516             break;
 517         case SDL_QUIT:
 518             qemu_system_shutdown_request();
 519             break;
 520         case SDL_MOUSEMOTION:
 521             if (gui_grab) {
 522                 sdl_send_mouse_event();
 523             }
 524             break;
 525         case SDL_MOUSEBUTTONDOWN:
 526         case SDL_MOUSEBUTTONUP:
 527             {
 528                 SDL_MouseButtonEvent *bev = &ev->button;
 529                 if (!gui_grab) {
 530                     if (ev->type == SDL_MOUSEBUTTONDOWN &&
 531                         (bev->state & SDL_BUTTON_LMASK)) {
 532                         /* start grabbing all events */
 533                         sdl_grab_start();
 534                     }
 535                 } else {
 536                     sdl_send_mouse_event();
 537                 }
 538             }
 539             break;
 540         case SDL_ACTIVEEVENT:
 541             if (gui_grab && (ev->active.gain & SDL_ACTIVEEVENTMASK) == 0 &&
 542                 !gui_fullscreen_initial_grab) {
 543                 sdl_grab_end();
 544             }
 545             break;
 546         default:
 547             break;
 548         }
 549     }
 550 }
 551
 552 static void sdl_cleanup(void)
 553 {
 554     SDL_Quit();
 555 }
 556
 557 void sdl_display_init(DisplayState *ds, int full_screen)
 558 {
 559     int flags;
 560
 561     flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
 562     if (SDL_Init (flags)) {
 563         fprintf(stderr, "Could not initialize SDL - exiting\n");
 564         exit(1);
 565     }
 566 #ifndef _WIN32
 567     /* NOTE: we still want Ctrl-C to work, so we undo the SDL redirections */
 568     signal(SIGINT, SIG_DFL);
 569     signal(SIGQUIT, SIG_DFL);
 570 #endif
 571
 572     ds->dpy_update = sdl_update;
 573     ds->dpy_resize = sdl_resize;
 574     ds->dpy_refresh = sdl_refresh;
 575
 576     sdl_resize(ds, 640, 400);
 577     sdl_update_caption();
 578     SDL_EnableKeyRepeat(250, 50);
 579     SDL_EnableUNICODE(1);
 580     gui_grab = 0;
 581
 582     atexit(sdl_cleanup);
 583     if (full_screen) {
 584         gui_fullscreen = 1;
 585         gui_fullscreen_initial_grab = 1;
 586         sdl_grab_start();
 587     }
 588 }