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
  44 static void sdl_update(DisplayState *ds, int x, int y, int w, int h)
  45 {
  46     //    printf("updating x=%d y=%d w=%d h=%d\n", x, y, w, h);
  47     SDL_UpdateRect(screen, x, y, w, h);
  48 }
  49
  50 static void sdl_resize(DisplayState *ds, int w, int h)
  51 {
  52     int flags;
  53
  54     //    printf("resizing to %d %d\n", w, h);
  55
  56     flags = SDL_HWSURFACE|SDL_ASYNCBLIT|SDL_HWACCEL;
  57     flags |= SDL_RESIZABLE;
  58     if (gui_fullscreen)
  59         flags |= SDL_FULLSCREEN;
  60     screen = SDL_SetVideoMode(w, h, 0, flags);
  61     if (!screen) {
  62         fprintf(stderr, "Could not open SDL display\n");
  63         exit(1);
  64     }
  65     ds->data = screen->pixels;
  66     ds->linesize = screen->pitch;
  67     ds->depth = screen->format->BitsPerPixel;
  68     ds->width = w;
  69     ds->height = h;
  70 }
  71
  72 #ifdef CONFIG_SDL_GENERIC_KBD
  73
  74 /* XXX: use keymap tables defined in the VNC patch because the
  75    following code suppose you have a US keyboard. */
  76
  77 static const uint8_t scancodes[SDLK_LAST] = {
  78     [SDLK_ESCAPE]   = 0x01,
  79     [SDLK_1]        = 0x02,
  80     [SDLK_2]        = 0x03,
  81     [SDLK_3]        = 0x04,
  82     [SDLK_4]        = 0x05,
  83     [SDLK_5]        = 0x06,
  84     [SDLK_6]        = 0x07,
  85     [SDLK_7]        = 0x08,
  86     [SDLK_8]        = 0x09,
  87     [SDLK_9]        = 0x0a,
  88     [SDLK_0]        = 0x0b,
  89     [SDLK_MINUS]    = 0x0c,
  90     [SDLK_EQUALS]   = 0x0d,
  91     [SDLK_BACKSPACE]        = 0x0e,
  92     [SDLK_TAB]      = 0x0f,
  93     [SDLK_q]        = 0x10,
  94     [SDLK_w]        = 0x11,
  95     [SDLK_e]        = 0x12,
  96     [SDLK_r]        = 0x13,
  97     [SDLK_t]        = 0x14,
  98     [SDLK_y]        = 0x15,
  99     [SDLK_u]        = 0x16,
 100     [SDLK_i]        = 0x17,
 101     [SDLK_o]        = 0x18,
 102     [SDLK_p]        = 0x19,
 103     [SDLK_LEFTBRACKET]      = 0x1a,
 104     [SDLK_RIGHTBRACKET]     = 0x1b,
 105     [SDLK_RETURN]   = 0x1c,
 106     [SDLK_LCTRL]    = 0x1d,
 107     [SDLK_a]        = 0x1e,
 108     [SDLK_s]        = 0x1f,
 109     [SDLK_d]        = 0x20,
 110     [SDLK_f]        = 0x21,
 111     [SDLK_g]        = 0x22,
 112     [SDLK_h]        = 0x23,
 113     [SDLK_j]        = 0x24,
 114     [SDLK_k]        = 0x25,
 115     [SDLK_l]        = 0x26,
 116     [SDLK_SEMICOLON]        = 0x27,
 117     [SDLK_QUOTE]    = 0x28,
 118     [SDLK_BACKQUOTE]        = 0x29,
 119     [SDLK_LSHIFT]   = 0x2a,
 120     [SDLK_BACKSLASH]        = 0x2b,
 121     [SDLK_z]        = 0x2c,
 122     [SDLK_x]        = 0x2d,
 123     [SDLK_c]        = 0x2e,
 124     [SDLK_v]        = 0x2f,
 125     [SDLK_b]        = 0x30,
 126     [SDLK_n]        = 0x31,
 127     [SDLK_m]        = 0x32,
 128     [SDLK_COMMA]    = 0x33,
 129     [SDLK_PERIOD]   = 0x34,
 130     [SDLK_SLASH]    = 0x35,
 131     [SDLK_KP_MULTIPLY]      = 0x37,
 132     [SDLK_LALT]     = 0x38,
 133     [SDLK_SPACE]    = 0x39,
 134     [SDLK_CAPSLOCK] = 0x3a,
 135     [SDLK_F1]       = 0x3b,
 136     [SDLK_F2]       = 0x3c,
 137     [SDLK_F3]       = 0x3d,
 138     [SDLK_F4]       = 0x3e,
 139     [SDLK_F5]       = 0x3f,
 140     [SDLK_F6]       = 0x40,
 141     [SDLK_F7]       = 0x41,
 142     [SDLK_F8]       = 0x42,
 143     [SDLK_F9]       = 0x43,
 144     [SDLK_F10]      = 0x44,
 145     [SDLK_NUMLOCK]  = 0x45,
 146     [SDLK_SCROLLOCK]        = 0x46,
 147     [SDLK_KP7]      = 0x47,
 148     [SDLK_KP8]      = 0x48,
 149     [SDLK_KP9]      = 0x49,
 150     [SDLK_KP_MINUS] = 0x4a,
 151     [SDLK_KP4]      = 0x4b,
 152     [SDLK_KP5]      = 0x4c,
 153     [SDLK_KP6]      = 0x4d,
 154     [SDLK_KP_PLUS]  = 0x4e,
 155     [SDLK_KP1]      = 0x4f,
 156     [SDLK_KP2]      = 0x50,
 157     [SDLK_KP3]      = 0x51,
 158     [SDLK_KP0]      = 0x52,
 159     [SDLK_KP_PERIOD]        = 0x53,
 160     [SDLK_PRINT]    = 0x54,
 161     [SDLK_LMETA]    = 0x56,
 162
 163     [SDLK_KP_ENTER]  = 0x9c,
 164     [SDLK_KP_DIVIDE] = 0xb5,
 165
 166     [SDLK_UP]       = 0xc8,
 167     [SDLK_DOWN]     = 0xd0,
 168     [SDLK_RIGHT]    = 0xcd,
 169     [SDLK_LEFT]     = 0xcb,
 170     [SDLK_INSERT]   = 0xd2,
 171     [SDLK_HOME]     = 0xc7,
 172     [SDLK_END]      = 0xcf,
 173     [SDLK_PAGEUP]   = 0xc9,
 174     [SDLK_PAGEDOWN] = 0xd1,
 175     [SDLK_DELETE]   = 0xd3,
 176 };
 177
 178 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 179 {
 180     return scancodes[ev->keysym.sym];
 181 }
 182
 183 #elif defined(_WIN32)
 184
 185 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 186 {
 187     return ev->keysym.scancode;
 188 }
 189
 190 #else
 191
 192 static const uint8_t x_keycode_to_pc_keycode[61] = {
 193    0xc7,      /*  97  Home   */
 194    0xc8,      /*  98  Up     */
 195    0xc9,      /*  99  PgUp   */
 196    0xcb,      /* 100  Left   */
 197    0x4c,        /* 101  KP-5   */
 198    0xcd,      /* 102  Right  */
 199    0xcf,      /* 103  End    */
 200    0xd0,      /* 104  Down   */
 201    0xd1,      /* 105  PgDn   */
 202    0xd2,      /* 106  Ins    */
 203    0xd3,      /* 107  Del    */
 204    0x9c,      /* 108  Enter  */
 205    0x9d,      /* 109  Ctrl-R */
 206    0x0,       /* 110  Pause  */
 207    0xb7,      /* 111  Print  */
 208    0xb5,      /* 112  Divide */
 209    0xb8,      /* 113  Alt-R  */
 210    0xc6,      /* 114  Break  */
 211    0x0,         /* 115 */
 212    0x0,         /* 116 */
 213    0x0,         /* 117 */
 214    0x0,         /* 118 */
 215    0x0,         /* 119 */
 216    0x70,         /* 120 Hiragana_Katakana */
 217    0x0,         /* 121 */
 218    0x0,         /* 122 */
 219    0x73,         /* 123 backslash */
 220    0x0,         /* 124 */
 221    0x0,         /* 125 */
 222    0x0,         /* 126 */
 223    0x0,         /* 127 */
 224    0x0,         /* 128 */
 225    0x79,         /* 129 Henkan */
 226    0x0,         /* 130 */
 227    0x7b,         /* 131 Muhenkan */
 228    0x0,         /* 132 */
 229    0x7d,         /* 133 Yen */
 230    0x0,         /* 134 */
 231    0x0,         /* 135 */
 232    0x47,         /* 136 KP_7 */
 233    0x48,         /* 137 KP_8 */
 234    0x49,         /* 138 KP_9 */
 235    0x4b,         /* 139 KP_4 */
 236    0x4c,         /* 140 KP_5 */
 237    0x4d,         /* 141 KP_6 */
 238    0x4f,         /* 142 KP_1 */
 239    0x50,         /* 143 KP_2 */
 240    0x51,         /* 144 KP_3 */
 241    0x52,         /* 145 KP_0 */
 242    0x53,         /* 146 KP_. */
 243    0x47,         /* 147 KP_HOME */
 244    0x48,         /* 148 KP_UP */
 245    0x49,         /* 149 KP_PgUp */
 246    0x4b,         /* 150 KP_Left */
 247    0x4c,         /* 151 KP_ */
 248    0x4d,         /* 152 KP_Right */
 249    0x4f,         /* 153 KP_End */
 250    0x50,         /* 154 KP_Down */
 251    0x51,         /* 155 KP_PgDn */
 252    0x52,         /* 156 KP_Ins */
 253    0x53,         /* 157 KP_Del */
 254 };
 255
 256 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 257 {
 258     int keycode;
 259
 260     keycode = ev->keysym.scancode;
 261
 262     if (keycode < 9) {
 263         keycode = 0;
 264     } else if (keycode < 97) {
 265         keycode -= 8; /* just an offset */
 266     } else if (keycode < 158) {
 267         /* use conversion table */
 268         keycode = x_keycode_to_pc_keycode[keycode - 97];
 269     } else {
 270         keycode = 0;
 271     }
 272     return keycode;
 273 }
 274
 275 #endif
 276
 277 static void sdl_process_key(SDL_KeyboardEvent *ev)
 278 {
 279     int keycode, v, i;
 280     static uint8_t modifiers_state[256];
 281
 282     if (ev->keysym.sym == SDLK_PAUSE) {
 283         /* specific case */
 284         v = 0;
 285         if (ev->type == SDL_KEYUP)
 286             v |= 0x80;
 287         kbd_put_keycode(0xe1);
 288         kbd_put_keycode(0x1d | v);
 289         kbd_put_keycode(0x45 | v);
 290         return;
 291     }
 292
 293     /* XXX: not portable, but avoids complicated mappings */
 294     keycode = sdl_keyevent_to_keycode(ev);
 295
 296     switch(keycode) {
 297     case 0x00:
 298         /* sent when leaving window: reset the modifiers state */
 299         for(i = 0; i < 256; i++) {
 300             if (modifiers_state[i]) {
 301                 if (i & 0x80)
 302                     kbd_put_keycode(0xe0);
 303                 kbd_put_keycode(i | 0x80);
 304             }
 305         }
 306         return;
 307     case 0x2a:                          /* Left Shift */
 308     case 0x36:                          /* Right Shift */
 309     case 0x1d:                          /* Left CTRL */
 310     case 0x9d:                          /* Right CTRL */
 311     case 0x38:                          /* Left ALT */
 312     case 0xb8:                         /* Right ALT */
 313         if (ev->type == SDL_KEYUP)
 314             modifiers_state[keycode] = 0;
 315         else
 316             modifiers_state[keycode] = 1;
 317         break;
 318     case 0x45: /* num lock */
 319     case 0x3a: /* caps lock */
 320         /* SDL does not send the key up event, so we generate it */
 321         kbd_put_keycode(keycode);
 322         kbd_put_keycode(keycode | 0x80);
 323         return;
 324     }
 325
 326     /* now send the key code */
 327     if (keycode & 0x80)
 328         kbd_put_keycode(0xe0);
 329     if (ev->type == SDL_KEYUP)
 330         kbd_put_keycode(keycode | 0x80);
 331     else
 332         kbd_put_keycode(keycode & 0x7f);
 333 }
 334
 335 static void sdl_update_caption(void)
 336 {
 337     char buf[1024];
 338     strcpy(buf, "QEMU");
 339     if (!vm_running) {
 340         strcat(buf, " [Stopped]");
 341     }
 342     if (gui_grab) {
 343         strcat(buf, " - Press Ctrl-Shift to exit grab");
 344     }
 345     SDL_WM_SetCaption(buf, "QEMU");
 346 }
 347
 348 static void sdl_grab_start(void)
 349 {
 350     SDL_ShowCursor(0);
 351     SDL_WM_GrabInput(SDL_GRAB_ON);
 352     /* dummy read to avoid moving the mouse */
 353     SDL_GetRelativeMouseState(NULL, NULL);
 354     gui_grab = 1;
 355     sdl_update_caption();
 356 }
 357
 358 static void sdl_grab_end(void)
 359 {
 360     SDL_WM_GrabInput(SDL_GRAB_OFF);
 361     SDL_ShowCursor(1);
 362     gui_grab = 0;
 363     sdl_update_caption();
 364 }
 365
 366 static void sdl_send_mouse_event(void)
 367 {
 368     int dx, dy, dz, state, buttons;
 369     state = SDL_GetRelativeMouseState(&dx, &dy);
 370     buttons = 0;
 371     if (state & SDL_BUTTON(SDL_BUTTON_LEFT))
 372         buttons |= MOUSE_EVENT_LBUTTON;
 373     if (state & SDL_BUTTON(SDL_BUTTON_RIGHT))
 374         buttons |= MOUSE_EVENT_RBUTTON;
 375     if (state & SDL_BUTTON(SDL_BUTTON_MIDDLE))
 376         buttons |= MOUSE_EVENT_MBUTTON;
 377     /* XXX: test wheel */
 378     dz = 0;
 379 #ifdef SDL_BUTTON_WHEELUP
 380     if (state & SDL_BUTTON(SDL_BUTTON_WHEELUP))
 381         dz--;
 382     if (state & SDL_BUTTON(SDL_BUTTON_WHEELDOWN))
 383         dz++;
 384 #endif
 385     kbd_mouse_event(dx, dy, dz, buttons);
 386 }
 387
 388 static void toggle_full_screen(DisplayState *ds)
 389 {
 390     gui_fullscreen = !gui_fullscreen;
 391     sdl_resize(ds, screen->w, screen->h);
 392     if (gui_fullscreen) {
 393         gui_saved_grab = gui_grab;
 394         sdl_grab_start();
 395     } else {
 396         if (!gui_saved_grab)
 397             sdl_grab_end();
 398     }
 399     vga_invalidate_display();
 400     vga_update_display();
 401 }
 402
 403 static void sdl_refresh(DisplayState *ds)
 404 {
 405     SDL_Event ev1, *ev = &ev1;
 406     int mod_state;
 407
 408     if (last_vm_running != vm_running) {
 409         last_vm_running = vm_running;
 410         sdl_update_caption();
 411     }
 412
 413     if (is_active_console(vga_console))
 414         vga_update_display();
 415
 416     while (SDL_PollEvent(ev)) {
 417         switch (ev->type) {
 418         case SDL_VIDEOEXPOSE:
 419             sdl_update(ds, 0, 0, screen->w, screen->h);
 420             break;
 421         case SDL_KEYDOWN:
 422         case SDL_KEYUP:
 423             if (ev->type == SDL_KEYDOWN) {
 424                 mod_state = (SDL_GetModState() & (KMOD_LSHIFT | KMOD_LCTRL)) ==
 425                     (KMOD_LSHIFT | KMOD_LCTRL);
 426                 gui_key_modifier_pressed = mod_state;
 427                 if (gui_key_modifier_pressed) {
 428                     switch(ev->key.keysym.sym) {
 429                     case SDLK_f:
 430                         toggle_full_screen(ds);
 431                         gui_keysym = 1;
 432                         break;
 433                     case SDLK_F1 ... SDLK_F12:
 434                         console_select(ev->key.keysym.sym - SDLK_F1);
 435                         if (is_active_console(vga_console)) {
 436                             /* tell the vga console to redisplay itself */
 437                             vga_invalidate_display();
 438                         } else {
 439                             /* display grab if going to a text console */
 440                             if (gui_grab)
 441                                 sdl_grab_end();
 442                         }
 443                         gui_keysym = 1;
 444                         break;
 445                     default:
 446                         break;
 447                     }
 448                 }
 449                 if (!is_active_console(vga_console)) {
 450                     int keysym;
 451                     keysym = 0;
 452                     if (ev->key.keysym.mod & (KMOD_LCTRL | KMOD_RCTRL)) {
 453                         switch(ev->key.keysym.sym) {
 454                         case SDLK_UP: keysym = QEMU_KEY_CTRL_UP; break;
 455                         case SDLK_DOWN: keysym = QEMU_KEY_CTRL_DOWN; break;
 456                         case SDLK_LEFT: keysym = QEMU_KEY_CTRL_LEFT; break;
 457                         case SDLK_RIGHT: keysym = QEMU_KEY_CTRL_RIGHT; break;
 458                         case SDLK_HOME: keysym = QEMU_KEY_CTRL_HOME; break;
 459                         case SDLK_END: keysym = QEMU_KEY_CTRL_END; break;
 460                         case SDLK_PAGEUP: keysym = QEMU_KEY_CTRL_PAGEUP; break;
 461                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_CTRL_PAGEDOWN; break;
 462                         default: break;
 463                         }
 464                     } else {
 465                         switch(ev->key.keysym.sym) {
 466                         case SDLK_UP: keysym = QEMU_KEY_UP; break;
 467                         case SDLK_DOWN: keysym = QEMU_KEY_DOWN; break;
 468                         case SDLK_LEFT: keysym = QEMU_KEY_LEFT; break;
 469                         case SDLK_RIGHT: keysym = QEMU_KEY_RIGHT; break;
 470                         case SDLK_HOME: keysym = QEMU_KEY_HOME; break;
 471                         case SDLK_END: keysym = QEMU_KEY_END; break;
 472                         case SDLK_PAGEUP: keysym = QEMU_KEY_PAGEUP; break;
 473                         case SDLK_PAGEDOWN: keysym = QEMU_KEY_PAGEDOWN; break;
 474                         case SDLK_BACKSPACE: keysym = QEMU_KEY_BACKSPACE; break;                        case SDLK_DELETE: keysym = QEMU_KEY_DELETE; break;
 475                         default: break;
 476                         }
 477                     }
 478                     if (keysym) {
 479                         kbd_put_keysym(keysym);
 480                     } else if (ev->key.keysym.unicode != 0) {
 481                         kbd_put_keysym(ev->key.keysym.unicode);
 482                     }
 483                 }
 484             } else if (ev->type == SDL_KEYUP) {
 485                 mod_state = (SDL_GetModState() & (KMOD_LSHIFT | KMOD_LCTRL));
 486                 if (!mod_state) {
 487                     if (gui_key_modifier_pressed) {
 488                         if (gui_keysym == 0) {
 489                             /* exit/enter grab if pressing Ctrl-Shift */
 490                             if (!gui_grab)
 491                                 sdl_grab_start();
 492                             else
 493                                 sdl_grab_end();
 494                             break;
 495                         }
 496                         gui_key_modifier_pressed = 0;
 497                         gui_keysym = 0;
 498                     }
 499                 }
 500             }
 501             if (is_active_console(vga_console))
 502                 sdl_process_key(&ev->key);
 503             break;
 504         case SDL_QUIT:
 505             qemu_system_shutdown_request();
 506             break;
 507         case SDL_MOUSEMOTION:
 508             if (gui_grab) {
 509                 sdl_send_mouse_event();
 510             }
 511             break;
 512         case SDL_MOUSEBUTTONDOWN:
 513         case SDL_MOUSEBUTTONUP:
 514             {
 515                 SDL_MouseButtonEvent *bev = &ev->button;
 516                 if (!gui_grab) {
 517                     if (ev->type == SDL_MOUSEBUTTONDOWN &&
 518                         (bev->state & SDL_BUTTON_LMASK)) {
 519                         /* start grabbing all events */
 520                         sdl_grab_start();
 521                     }
 522                 } else {
 523                     sdl_send_mouse_event();
 524                 }
 525             }
 526             break;
 527         case SDL_ACTIVEEVENT:
 528             if (gui_grab && (ev->active.gain & SDL_ACTIVEEVENTMASK) == 0) {
 529                 sdl_grab_end();
 530             }
 531             break;
 532         default:
 533             break;
 534         }
 535     }
 536 }
 537
 538 static void sdl_cleanup(void)
 539 {
 540     SDL_Quit();
 541 }
 542
 543 void sdl_display_init(DisplayState *ds)
 544 {
 545     int flags;
 546
 547     flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
 548     if (SDL_Init (flags)) {
 549         fprintf(stderr, "Could not initialize SDL - exiting\n");
 550         exit(1);
 551     }
 552 #ifndef _WIN32
 553     /* NOTE: we still want Ctrl-C to work, so we undo the SDL redirections */
 554     signal(SIGINT, SIG_DFL);
 555     signal(SIGQUIT, SIG_DFL);
 556 #endif
 557
 558     ds->dpy_update = sdl_update;
 559     ds->dpy_resize = sdl_resize;
 560     ds->dpy_refresh = sdl_refresh;
 561
 562     sdl_resize(ds, 640, 400);
 563     sdl_update_caption();
 564     SDL_EnableKeyRepeat(250, 50);
 565     SDL_EnableUNICODE(1);
 566     gui_grab = 0;
 567
 568     atexit(sdl_cleanup);
 569 }