ui/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
  25 /* Avoid compiler warning because macro is redefined in SDL_syswm.h. */
  26 #undef WIN32_LEAN_AND_MEAN
  27
  28 #include <SDL.h>
  29 #include <SDL_syswm.h>
  30
  31 #include "qemu-common.h"
  32 #include "ui/console.h"
  33 #include "sysemu/sysemu.h"
  34 #include "x_keymap.h"
  35 #include "sdl_zoom.h"
  36
  37 static DisplayChangeListener *dcl;
  38 static SDL_Surface *real_screen;
  39 static SDL_Surface *guest_screen = NULL;
  40 static int gui_grab; /* if true, all keyboard/mouse events are grabbed */
  41 static int last_vm_running;
  42 static bool gui_saved_scaling;
  43 static int gui_saved_width;
  44 static int gui_saved_height;
  45 static int gui_saved_grab;
  46 static int gui_fullscreen;
  47 static int gui_noframe;
  48 static int gui_key_modifier_pressed;
  49 static int gui_keysym;
  50 static int gui_grab_code = KMOD_LALT | KMOD_LCTRL;
  51 static uint8_t modifiers_state[256];
  52 static SDL_Cursor *sdl_cursor_normal;
  53 static SDL_Cursor *sdl_cursor_hidden;
  54 static int absolute_enabled = 0;
  55 static int guest_cursor = 0;
  56 static int guest_x, guest_y;
  57 static SDL_Cursor *guest_sprite = NULL;
  58 static SDL_PixelFormat host_format;
  59 static int scaling_active = 0;
  60 static Notifier mouse_mode_notifier;
  61
  62 static void sdl_update(DisplayChangeListener *dcl,
  63                        DisplayState *ds,
  64                        int x, int y, int w, int h)
  65 {
  66     //    printf("updating x=%d y=%d w=%d h=%d\n", x, y, w, h);
  67     SDL_Rect rec;
  68     rec.x = x;
  69     rec.y = y;
  70     rec.w = w;
  71     rec.h = h;
  72
  73     if (guest_screen) {
  74         if (!scaling_active) {
  75             SDL_BlitSurface(guest_screen, &rec, real_screen, &rec);
  76         } else {
  77             if (sdl_zoom_blit(guest_screen, real_screen, SMOOTHING_ON, &rec) < 0) {
  78                 fprintf(stderr, "Zoom blit failed\n");
  79                 exit(1);
  80             }
  81         }
  82     }
  83     SDL_UpdateRect(real_screen, rec.x, rec.y, rec.w, rec.h);
  84 }
  85
  86 static void sdl_setdata(DisplayChangeListener *dcl,
  87                         DisplayState *ds)
  88 {
  89     if (guest_screen != NULL) SDL_FreeSurface(guest_screen);
  90
  91     guest_screen = SDL_CreateRGBSurfaceFrom(ds_get_data(ds), ds_get_width(ds), ds_get_height(ds),
  92                                             ds_get_bits_per_pixel(ds), ds_get_linesize(ds),
  93                                             ds->surface->pf.rmask, ds->surface->pf.gmask,
  94                                             ds->surface->pf.bmask, ds->surface->pf.amask);
  95 }
  96
  97 static void do_sdl_resize(int width, int height, int bpp)
  98 {
  99     int flags;
 100
 101     //    printf("resizing to %d %d\n", w, h);
 102
 103     flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
 104     if (gui_fullscreen) {
 105         flags |= SDL_FULLSCREEN;
 106     } else {
 107         flags |= SDL_RESIZABLE;
 108     }
 109     if (gui_noframe)
 110         flags |= SDL_NOFRAME;
 111
 112     real_screen = SDL_SetVideoMode(width, height, bpp, flags);
 113     if (!real_screen) {
 114         fprintf(stderr, "Could not open SDL display (%dx%dx%d): %s\n", width,
 115                 height, bpp, SDL_GetError());
 116         exit(1);
 117     }
 118 }
 119
 120 static void sdl_resize(DisplayChangeListener *dcl,
 121                        DisplayState *ds)
 122 {
 123     if (!scaling_active) {
 124         do_sdl_resize(ds_get_width(ds), ds_get_height(ds), 0);
 125     } else if (real_screen->format->BitsPerPixel != ds_get_bits_per_pixel(ds)) {
 126         do_sdl_resize(real_screen->w, real_screen->h,
 127                       ds_get_bits_per_pixel(ds));
 128     }
 129     sdl_setdata(dcl, ds);
 130 }
 131
 132 /* generic keyboard conversion */
 133
 134 #include "sdl_keysym.h"
 135
 136 static kbd_layout_t *kbd_layout = NULL;
 137
 138 static uint8_t sdl_keyevent_to_keycode_generic(const SDL_KeyboardEvent *ev)
 139 {
 140     int keysym;
 141     /* workaround for X11+SDL bug with AltGR */
 142     keysym = ev->keysym.sym;
 143     if (keysym == 0 && ev->keysym.scancode == 113)
 144         keysym = SDLK_MODE;
 145     /* For Japanese key '\' and '|' */
 146     if (keysym == 92 && ev->keysym.scancode == 133) {
 147         keysym = 0xa5;
 148     }
 149     return keysym2scancode(kbd_layout, keysym) & SCANCODE_KEYMASK;
 150 }
 151
 152 /* specific keyboard conversions from scan codes */
 153
 154 #if defined(_WIN32)
 155
 156 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 157 {
 158     return ev->keysym.scancode;
 159 }
 160
 161 #else
 162
 163 #if defined(SDL_VIDEO_DRIVER_X11)
 164 #include <X11/XKBlib.h>
 165
 166 static int check_for_evdev(void)
 167 {
 168     SDL_SysWMinfo info;
 169     XkbDescPtr desc = NULL;
 170     int has_evdev = 0;
 171     char *keycodes = NULL;
 172
 173     SDL_VERSION(&info.version);
 174     if (!SDL_GetWMInfo(&info)) {
 175         return 0;
 176     }
 177     desc = XkbGetKeyboard(info.info.x11.display,
 178                           XkbGBN_AllComponentsMask,
 179                           XkbUseCoreKbd);
 180     if (desc && desc->names) {
 181         keycodes = XGetAtomName(info.info.x11.display, desc->names->keycodes);
 182         if (keycodes == NULL) {
 183             fprintf(stderr, "could not lookup keycode name\n");
 184         } else if (strstart(keycodes, "evdev", NULL)) {
 185             has_evdev = 1;
 186         } else if (!strstart(keycodes, "xfree86", NULL)) {
 187             fprintf(stderr, "unknown keycodes `%s', please report to "
 188                     "qemu-devel@nongnu.org\n", keycodes);
 189         }
 190     }
 191
 192     if (desc) {
 193         XkbFreeKeyboard(desc, XkbGBN_AllComponentsMask, True);
 194     }
 195     if (keycodes) {
 196         XFree(keycodes);
 197     }
 198     return has_evdev;
 199 }
 200 #else
 201 static int check_for_evdev(void)
 202 {
 203         return 0;
 204 }
 205 #endif
 206
 207 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 208 {
 209     int keycode;
 210     static int has_evdev = -1;
 211
 212     if (has_evdev == -1)
 213         has_evdev = check_for_evdev();
 214
 215     keycode = ev->keysym.scancode;
 216
 217     if (keycode < 9) {
 218         keycode = 0;
 219     } else if (keycode < 97) {
 220         keycode -= 8; /* just an offset */
 221     } else if (keycode < 158) {
 222         /* use conversion table */
 223         if (has_evdev)
 224             keycode = translate_evdev_keycode(keycode - 97);
 225         else
 226             keycode = translate_xfree86_keycode(keycode - 97);
 227     } else if (keycode == 208) { /* Hiragana_Katakana */
 228         keycode = 0x70;
 229     } else if (keycode == 211) { /* backslash */
 230         keycode = 0x73;
 231     } else {
 232         keycode = 0;
 233     }
 234     return keycode;
 235 }
 236
 237 #endif
 238
 239 static void reset_keys(void)
 240 {
 241     int i;
 242     for(i = 0; i < 256; i++) {
 243         if (modifiers_state[i]) {
 244             if (i & SCANCODE_GREY)
 245                 kbd_put_keycode(SCANCODE_EMUL0);
 246             kbd_put_keycode(i | SCANCODE_UP);
 247             modifiers_state[i] = 0;
 248         }
 249     }
 250 }
 251
 252 static void sdl_process_key(SDL_KeyboardEvent *ev)
 253 {
 254     int keycode, v;
 255
 256     if (ev->keysym.sym == SDLK_PAUSE) {
 257         /* specific case */
 258         v = 0;
 259         if (ev->type == SDL_KEYUP)
 260             v |= SCANCODE_UP;
 261         kbd_put_keycode(0xe1);
 262         kbd_put_keycode(0x1d | v);
 263         kbd_put_keycode(0x45 | v);
 264         return;
 265     }
 266
 267     if (kbd_layout) {
 268         keycode = sdl_keyevent_to_keycode_generic(ev);
 269     } else {
 270         keycode = sdl_keyevent_to_keycode(ev);
 271     }
 272
 273     switch(keycode) {
 274     case 0x00:
 275         /* sent when leaving window: reset the modifiers state */
 276         reset_keys();
 277         return;
 278     case 0x2a:                          /* Left Shift */
 279     case 0x36:                          /* Right Shift */
 280     case 0x1d:                          /* Left CTRL */
 281     case 0x9d:                          /* Right CTRL */
 282     case 0x38:                          /* Left ALT */
 283     case 0xb8:                         /* Right ALT */
 284         if (ev->type == SDL_KEYUP)
 285             modifiers_state[keycode] = 0;
 286         else
 287             modifiers_state[keycode] = 1;
 288         break;
 289 #define QEMU_SDL_VERSION ((SDL_MAJOR_VERSION << 8) + SDL_MINOR_VERSION)
 290 #if QEMU_SDL_VERSION < 0x102 || QEMU_SDL_VERSION == 0x102 && SDL_PATCHLEVEL < 14
 291         /* SDL versions before 1.2.14 don't support key up for caps/num lock. */
 292     case 0x45: /* num lock */
 293     case 0x3a: /* caps lock */
 294         /* SDL does not send the key up event, so we generate it */
 295         kbd_put_keycode(keycode);
 296         kbd_put_keycode(keycode | SCANCODE_UP);
 297         return;
 298 #endif
 299     }
 300
 301     /* now send the key code */
 302     if (keycode & SCANCODE_GREY)
 303         kbd_put_keycode(SCANCODE_EMUL0);
 304     if (ev->type == SDL_KEYUP)
 305         kbd_put_keycode(keycode | SCANCODE_UP);
 306     else
 307         kbd_put_keycode(keycode & SCANCODE_KEYCODEMASK);
 308 }
 309
 310 static void sdl_update_caption(void)
 311 {
 312     char win_title[1024];
 313     char icon_title[1024];
 314     const char *status = "";
 315
 316     if (!runstate_is_running())
 317         status = " [Stopped]";
 318     else if (gui_grab) {
 319         if (alt_grab)
 320             status = " - Press Ctrl-Alt-Shift to exit mouse grab";
 321         else if (ctrl_grab)
 322             status = " - Press Right-Ctrl to exit mouse grab";
 323         else
 324             status = " - Press Ctrl-Alt to exit mouse grab";
 325     }
 326
 327     if (qemu_name) {
 328         snprintf(win_title, sizeof(win_title), "QEMU (%s)%s", qemu_name, status);
 329         snprintf(icon_title, sizeof(icon_title), "QEMU (%s)", qemu_name);
 330     } else {
 331         snprintf(win_title, sizeof(win_title), "QEMU%s", status);
 332         snprintf(icon_title, sizeof(icon_title), "QEMU");
 333     }
 334
 335     SDL_WM_SetCaption(win_title, icon_title);
 336 }
 337
 338 static void sdl_hide_cursor(void)
 339 {
 340     if (!cursor_hide)
 341         return;
 342
 343     if (kbd_mouse_is_absolute()) {
 344         SDL_ShowCursor(1);
 345         SDL_SetCursor(sdl_cursor_hidden);
 346     } else {
 347         SDL_ShowCursor(0);
 348     }
 349 }
 350
 351 static void sdl_show_cursor(void)
 352 {
 353     if (!cursor_hide)
 354         return;
 355
 356     if (!kbd_mouse_is_absolute() || !is_graphic_console()) {
 357         SDL_ShowCursor(1);
 358         if (guest_cursor &&
 359                 (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
 360             SDL_SetCursor(guest_sprite);
 361         else
 362             SDL_SetCursor(sdl_cursor_normal);
 363     }
 364 }
 365
 366 static void sdl_grab_start(void)
 367 {
 368     /*
 369      * If the application is not active, do not try to enter grab state. This
 370      * prevents 'SDL_WM_GrabInput(SDL_GRAB_ON)' from blocking all the
 371      * application (SDL bug).
 372      */
 373     if (!(SDL_GetAppState() & SDL_APPINPUTFOCUS)) {
 374         return;
 375     }
 376     if (guest_cursor) {
 377         SDL_SetCursor(guest_sprite);
 378         if (!kbd_mouse_is_absolute() && !absolute_enabled)
 379             SDL_WarpMouse(guest_x, guest_y);
 380     } else
 381         sdl_hide_cursor();
 382     SDL_WM_GrabInput(SDL_GRAB_ON);
 383     gui_grab = 1;
 384     sdl_update_caption();
 385 }
 386
 387 static void sdl_grab_end(void)
 388 {
 389     SDL_WM_GrabInput(SDL_GRAB_OFF);
 390     gui_grab = 0;
 391     sdl_show_cursor();
 392     sdl_update_caption();
 393 }
 394
 395 static void absolute_mouse_grab(void)
 396 {
 397     int mouse_x, mouse_y;
 398
 399     SDL_GetMouseState(&mouse_x, &mouse_y);
 400     if (mouse_x > 0 && mouse_x < real_screen->w - 1 &&
 401         mouse_y > 0 && mouse_y < real_screen->h - 1) {
 402         sdl_grab_start();
 403     }
 404 }
 405
 406 static void sdl_mouse_mode_change(Notifier *notify, void *data)
 407 {
 408     if (kbd_mouse_is_absolute()) {
 409         if (!absolute_enabled) {
 410             absolute_enabled = 1;
 411             if (is_graphic_console()) {
 412                 absolute_mouse_grab();
 413             }
 414         }
 415     } else if (absolute_enabled) {
 416         if (!gui_fullscreen) {
 417             sdl_grab_end();
 418         }
 419         absolute_enabled = 0;
 420     }
 421 }
 422
 423 static void sdl_send_mouse_event(int dx, int dy, int dz, int x, int y, int state)
 424 {
 425     int buttons = 0;
 426
 427     if (state & SDL_BUTTON(SDL_BUTTON_LEFT)) {
 428         buttons |= MOUSE_EVENT_LBUTTON;
 429     }
 430     if (state & SDL_BUTTON(SDL_BUTTON_RIGHT)) {
 431         buttons |= MOUSE_EVENT_RBUTTON;
 432     }
 433     if (state & SDL_BUTTON(SDL_BUTTON_MIDDLE)) {
 434         buttons |= MOUSE_EVENT_MBUTTON;
 435     }
 436
 437     if (kbd_mouse_is_absolute()) {
 438         dx = x * 0x7FFF / (real_screen->w - 1);
 439         dy = y * 0x7FFF / (real_screen->h - 1);
 440     } else if (guest_cursor) {
 441         x -= guest_x;
 442         y -= guest_y;
 443         guest_x += x;
 444         guest_y += y;
 445         dx = x;
 446         dy = y;
 447     }
 448
 449     kbd_mouse_event(dx, dy, dz, buttons);
 450 }
 451
 452 static void sdl_scale(DisplayState *ds, int width, int height)
 453 {
 454     int bpp = real_screen->format->BitsPerPixel;
 455
 456     if (bpp != 16 && bpp != 32) {
 457         bpp = 32;
 458     }
 459     do_sdl_resize(width, height, bpp);
 460     scaling_active = 1;
 461     if (!is_buffer_shared(ds->surface)) {
 462         ds->surface = qemu_resize_displaysurface(ds, ds_get_width(ds),
 463                                                  ds_get_height(ds));
 464         dpy_gfx_resize(ds);
 465     }
 466 }
 467
 468 static void toggle_full_screen(DisplayState *ds)
 469 {
 470     gui_fullscreen = !gui_fullscreen;
 471     if (gui_fullscreen) {
 472         gui_saved_width = real_screen->w;
 473         gui_saved_height = real_screen->h;
 474         gui_saved_scaling = scaling_active;
 475
 476         do_sdl_resize(ds_get_width(ds), ds_get_height(ds),
 477                       ds_get_bits_per_pixel(ds));
 478         scaling_active = 0;
 479
 480         gui_saved_grab = gui_grab;
 481         sdl_grab_start();
 482     } else {
 483         if (gui_saved_scaling) {
 484             sdl_scale(ds, gui_saved_width, gui_saved_height);
 485         } else {
 486             do_sdl_resize(ds_get_width(ds), ds_get_height(ds), 0);
 487         }
 488         if (!gui_saved_grab || !is_graphic_console()) {
 489             sdl_grab_end();
 490         }
 491     }
 492     vga_hw_invalidate();
 493     vga_hw_update();
 494 }
 495
 496 static void handle_keydown(DisplayState *ds, SDL_Event *ev)
 497 {
 498     int mod_state;
 499     int keycode;
 500
 501     if (alt_grab) {
 502         mod_state = (SDL_GetModState() & (gui_grab_code | KMOD_LSHIFT)) ==
 503                     (gui_grab_code | KMOD_LSHIFT);
 504     } else if (ctrl_grab) {
 505         mod_state = (SDL_GetModState() & KMOD_RCTRL) == KMOD_RCTRL;
 506     } else {
 507         mod_state = (SDL_GetModState() & gui_grab_code) == gui_grab_code;
 508     }
 509     gui_key_modifier_pressed = mod_state;
 510
 511     if (gui_key_modifier_pressed) {
 512         keycode = sdl_keyevent_to_keycode(&ev->key);
 513         switch (keycode) {
 514         case 0x21: /* 'f' key on US keyboard */
 515             toggle_full_screen(ds);
 516             gui_keysym = 1;
 517             break;
 518         case 0x16: /* 'u' key on US keyboard */
 519             if (scaling_active) {
 520                 scaling_active = 0;
 521                 sdl_resize(dcl, ds);
 522                 vga_hw_invalidate();
 523                 vga_hw_update();
 524             }
 525             gui_keysym = 1;
 526             break;
 527         case 0x02 ... 0x0a: /* '1' to '9' keys */
 528             /* Reset the modifiers sent to the current console */
 529             reset_keys();
 530             console_select(keycode - 0x02);
 531             gui_keysym = 1;
 532             if (gui_fullscreen) {
 533                 break;
 534             }
 535             if (!is_graphic_console()) {
 536                 /* release grab if going to a text console */
 537                 if (gui_grab) {
 538                     sdl_grab_end();
 539                 } else if (absolute_enabled) {
 540                     sdl_show_cursor();
 541                 }
 542             } else if (absolute_enabled) {
 543                 sdl_hide_cursor();
 544                 absolute_mouse_grab();
 545             }
 546             break;
 547         case 0x1b: /* '+' */
 548         case 0x35: /* '-' */
 549             if (!gui_fullscreen) {
 550                 int width = MAX(real_screen->w + (keycode == 0x1b ? 50 : -50),
 551                                 160);
 552                 int height = (ds_get_height(ds) * width) / ds_get_width(ds);
 553
 554                 sdl_scale(ds, width, height);
 555                 vga_hw_invalidate();
 556                 vga_hw_update();
 557                 gui_keysym = 1;
 558             }
 559         default:
 560             break;
 561         }
 562     } else if (!is_graphic_console()) {
 563         int keysym = 0;
 564
 565         if (ev->key.keysym.mod & (KMOD_LCTRL | KMOD_RCTRL)) {
 566             switch (ev->key.keysym.sym) {
 567             case SDLK_UP:
 568                 keysym = QEMU_KEY_CTRL_UP;
 569                 break;
 570             case SDLK_DOWN:
 571                 keysym = QEMU_KEY_CTRL_DOWN;
 572                 break;
 573             case SDLK_LEFT:
 574                 keysym = QEMU_KEY_CTRL_LEFT;
 575                 break;
 576             case SDLK_RIGHT:
 577                 keysym = QEMU_KEY_CTRL_RIGHT;
 578                 break;
 579             case SDLK_HOME:
 580                 keysym = QEMU_KEY_CTRL_HOME;
 581                 break;
 582             case SDLK_END:
 583                 keysym = QEMU_KEY_CTRL_END;
 584                 break;
 585             case SDLK_PAGEUP:
 586                 keysym = QEMU_KEY_CTRL_PAGEUP;
 587                 break;
 588             case SDLK_PAGEDOWN:
 589                 keysym = QEMU_KEY_CTRL_PAGEDOWN;
 590                 break;
 591             default:
 592                 break;
 593             }
 594         } else {
 595             switch (ev->key.keysym.sym) {
 596             case SDLK_UP:
 597                 keysym = QEMU_KEY_UP;
 598                 break;
 599             case SDLK_DOWN:
 600                 keysym = QEMU_KEY_DOWN;
 601                 break;
 602             case SDLK_LEFT:
 603                 keysym = QEMU_KEY_LEFT;
 604                 break;
 605             case SDLK_RIGHT:
 606                 keysym = QEMU_KEY_RIGHT;
 607                 break;
 608             case SDLK_HOME:
 609                 keysym = QEMU_KEY_HOME;
 610                 break;
 611             case SDLK_END:
 612                 keysym = QEMU_KEY_END;
 613                 break;
 614             case SDLK_PAGEUP:
 615                 keysym = QEMU_KEY_PAGEUP;
 616                 break;
 617             case SDLK_PAGEDOWN:
 618                 keysym = QEMU_KEY_PAGEDOWN;
 619                 break;
 620             case SDLK_BACKSPACE:
 621                 keysym = QEMU_KEY_BACKSPACE;
 622                 break;
 623             case SDLK_DELETE:
 624                 keysym = QEMU_KEY_DELETE;
 625                 break;
 626             default:
 627                 break;
 628             }
 629         }
 630         if (keysym) {
 631             kbd_put_keysym(keysym);
 632         } else if (ev->key.keysym.unicode != 0) {
 633             kbd_put_keysym(ev->key.keysym.unicode);
 634         }
 635     }
 636     if (is_graphic_console() && !gui_keysym) {
 637         sdl_process_key(&ev->key);
 638     }
 639 }
 640
 641 static void handle_keyup(DisplayState *ds, SDL_Event *ev)
 642 {
 643     int mod_state;
 644
 645     if (!alt_grab) {
 646         mod_state = (ev->key.keysym.mod & gui_grab_code);
 647     } else {
 648         mod_state = (ev->key.keysym.mod & (gui_grab_code | KMOD_LSHIFT));
 649     }
 650     if (!mod_state && gui_key_modifier_pressed) {
 651         gui_key_modifier_pressed = 0;
 652         if (gui_keysym == 0) {
 653             /* exit/enter grab if pressing Ctrl-Alt */
 654             if (!gui_grab) {
 655                 if (is_graphic_console()) {
 656                     sdl_grab_start();
 657                 }
 658             } else if (!gui_fullscreen) {
 659                 sdl_grab_end();
 660             }
 661             /* SDL does not send back all the modifiers key, so we must
 662              * correct it. */
 663             reset_keys();
 664             return;
 665         }
 666         gui_keysym = 0;
 667     }
 668     if (is_graphic_console() && !gui_keysym) {
 669         sdl_process_key(&ev->key);
 670     }
 671 }
 672
 673 static void handle_mousemotion(DisplayState *ds, SDL_Event *ev)
 674 {
 675     int max_x, max_y;
 676
 677     if (is_graphic_console() &&
 678         (kbd_mouse_is_absolute() || absolute_enabled)) {
 679         max_x = real_screen->w - 1;
 680         max_y = real_screen->h - 1;
 681         if (gui_grab && (ev->motion.x == 0 || ev->motion.y == 0 ||
 682             ev->motion.x == max_x || ev->motion.y == max_y)) {
 683             sdl_grab_end();
 684         }
 685         if (!gui_grab &&
 686             (ev->motion.x > 0 && ev->motion.x < max_x &&
 687             ev->motion.y > 0 && ev->motion.y < max_y)) {
 688             sdl_grab_start();
 689         }
 690     }
 691     if (gui_grab || kbd_mouse_is_absolute() || absolute_enabled) {
 692         sdl_send_mouse_event(ev->motion.xrel, ev->motion.yrel, 0,
 693                              ev->motion.x, ev->motion.y, ev->motion.state);
 694     }
 695 }
 696
 697 static void handle_mousebutton(DisplayState *ds, SDL_Event *ev)
 698 {
 699     int buttonstate = SDL_GetMouseState(NULL, NULL);
 700     SDL_MouseButtonEvent *bev;
 701     int dz;
 702
 703     if (!is_graphic_console()) {
 704         return;
 705     }
 706
 707     bev = &ev->button;
 708     if (!gui_grab && !kbd_mouse_is_absolute()) {
 709         if (ev->type == SDL_MOUSEBUTTONUP && bev->button == SDL_BUTTON_LEFT) {
 710             /* start grabbing all events */
 711             sdl_grab_start();
 712         }
 713     } else {
 714         dz = 0;
 715         if (ev->type == SDL_MOUSEBUTTONDOWN) {
 716             buttonstate |= SDL_BUTTON(bev->button);
 717         } else {
 718             buttonstate &= ~SDL_BUTTON(bev->button);
 719         }
 720 #ifdef SDL_BUTTON_WHEELUP
 721         if (bev->button == SDL_BUTTON_WHEELUP &&
 722             ev->type == SDL_MOUSEBUTTONDOWN) {
 723             dz = -1;
 724         } else if (bev->button == SDL_BUTTON_WHEELDOWN &&
 725                    ev->type == SDL_MOUSEBUTTONDOWN) {
 726             dz = 1;
 727         }
 728 #endif
 729         sdl_send_mouse_event(0, 0, dz, bev->x, bev->y, buttonstate);
 730     }
 731 }
 732
 733 static void handle_activation(DisplayState *ds, SDL_Event *ev)
 734 {
 735 #ifdef _WIN32
 736     /* Disable grab if the window no longer has the focus
 737      * (Windows-only workaround) */
 738     if (gui_grab && ev->active.state == SDL_APPINPUTFOCUS &&
 739         !ev->active.gain && !gui_fullscreen) {
 740         sdl_grab_end();
 741     }
 742 #endif
 743     if (!gui_grab && ev->active.gain && is_graphic_console() &&
 744         (kbd_mouse_is_absolute() || absolute_enabled)) {
 745         absolute_mouse_grab();
 746     }
 747     if (ev->active.state & SDL_APPACTIVE) {
 748         if (ev->active.gain) {
 749             /* Back to default interval */
 750             dcl->gui_timer_interval = 0;
 751             dcl->idle = 0;
 752         } else {
 753             /* Sleeping interval */
 754             dcl->gui_timer_interval = 500;
 755             dcl->idle = 1;
 756         }
 757     }
 758 }
 759
 760 static void sdl_refresh(DisplayChangeListener *dcl,
 761                         DisplayState *ds)
 762 {
 763     SDL_Event ev1, *ev = &ev1;
 764
 765     if (last_vm_running != runstate_is_running()) {
 766         last_vm_running = runstate_is_running();
 767         sdl_update_caption();
 768     }
 769
 770     vga_hw_update();
 771     SDL_EnableUNICODE(!is_graphic_console());
 772
 773     while (SDL_PollEvent(ev)) {
 774         switch (ev->type) {
 775         case SDL_VIDEOEXPOSE:
 776             sdl_update(dcl, ds, 0, 0, real_screen->w, real_screen->h);
 777             break;
 778         case SDL_KEYDOWN:
 779             handle_keydown(ds, ev);
 780             break;
 781         case SDL_KEYUP:
 782             handle_keyup(ds, ev);
 783             break;
 784         case SDL_QUIT:
 785             if (!no_quit) {
 786                 no_shutdown = 0;
 787                 qemu_system_shutdown_request();
 788             }
 789             break;
 790         case SDL_MOUSEMOTION:
 791             handle_mousemotion(ds, ev);
 792             break;
 793         case SDL_MOUSEBUTTONDOWN:
 794         case SDL_MOUSEBUTTONUP:
 795             handle_mousebutton(ds, ev);
 796             break;
 797         case SDL_ACTIVEEVENT:
 798             handle_activation(ds, ev);
 799             break;
 800         case SDL_VIDEORESIZE:
 801             sdl_scale(ds, ev->resize.w, ev->resize.h);
 802             vga_hw_invalidate();
 803             vga_hw_update();
 804             break;
 805         default:
 806             break;
 807         }
 808     }
 809 }
 810
 811 static void sdl_mouse_warp(DisplayChangeListener *dcl,
 812                            DisplayState *ds,
 813                            int x, int y, int on)
 814 {
 815     if (on) {
 816         if (!guest_cursor)
 817             sdl_show_cursor();
 818         if (gui_grab || kbd_mouse_is_absolute() || absolute_enabled) {
 819             SDL_SetCursor(guest_sprite);
 820             if (!kbd_mouse_is_absolute() && !absolute_enabled)
 821                 SDL_WarpMouse(x, y);
 822         }
 823     } else if (gui_grab)
 824         sdl_hide_cursor();
 825     guest_cursor = on;
 826     guest_x = x, guest_y = y;
 827 }
 828
 829 static void sdl_mouse_define(DisplayChangeListener *dcl,
 830                              DisplayState *ds,
 831                              QEMUCursor *c)
 832 {
 833     uint8_t *image, *mask;
 834     int bpl;
 835
 836     if (guest_sprite)
 837         SDL_FreeCursor(guest_sprite);
 838
 839     bpl = cursor_get_mono_bpl(c);
 840     image = g_malloc0(bpl * c->height);
 841     mask  = g_malloc0(bpl * c->height);
 842     cursor_get_mono_image(c, 0x000000, image);
 843     cursor_get_mono_mask(c, 0, mask);
 844     guest_sprite = SDL_CreateCursor(image, mask, c->width, c->height,
 845                                     c->hot_x, c->hot_y);
 846     g_free(image);
 847     g_free(mask);
 848
 849     if (guest_cursor &&
 850             (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
 851         SDL_SetCursor(guest_sprite);
 852 }
 853
 854 static void sdl_cleanup(void)
 855 {
 856     if (guest_sprite)
 857         SDL_FreeCursor(guest_sprite);
 858     SDL_QuitSubSystem(SDL_INIT_VIDEO);
 859 }
 860
 861 static const DisplayChangeListenerOps dcl_ops = {
 862     .dpy_name          = "sdl",
 863     .dpy_gfx_update    = sdl_update,
 864     .dpy_gfx_resize    = sdl_resize,
 865     .dpy_refresh       = sdl_refresh,
 866     .dpy_gfx_setdata   = sdl_setdata,
 867     .dpy_mouse_set     = sdl_mouse_warp,
 868     .dpy_cursor_define = sdl_mouse_define,
 869 };
 870
 871 void sdl_display_init(DisplayState *ds, int full_screen, int no_frame)
 872 {
 873     int flags;
 874     uint8_t data = 0;
 875     const SDL_VideoInfo *vi;
 876     char *filename;
 877
 878 #if defined(__APPLE__)
 879     /* always use generic keymaps */
 880     if (!keyboard_layout)
 881         keyboard_layout = "en-us";
 882 #endif
 883     if(keyboard_layout) {
 884         kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
 885         if (!kbd_layout)
 886             exit(1);
 887     }
 888
 889     if (no_frame)
 890         gui_noframe = 1;
 891
 892     if (!full_screen) {
 893         setenv("SDL_VIDEO_ALLOW_SCREENSAVER", "1", 0);
 894     }
 895 #ifdef __linux__
 896     /* on Linux, SDL may use fbcon|directfb|svgalib when run without
 897      * accessible $DISPLAY to open X11 window.  This is often the case
 898      * when qemu is run using sudo.  But in this case, and when actually
 899      * run in X11 environment, SDL fights with X11 for the video card,
 900      * making current display unavailable, often until reboot.
 901      * So make x11 the default SDL video driver if this variable is unset.
 902      * This is a bit hackish but saves us from bigger problem.
 903      * Maybe it's a good idea to fix this in SDL instead.
 904      */
 905     setenv("SDL_VIDEODRIVER", "x11", 0);
 906 #endif
 907
 908     /* Enable normal up/down events for Caps-Lock and Num-Lock keys.
 909      * This requires SDL >= 1.2.14. */
 910     setenv("SDL_DISABLE_LOCK_KEYS", "1", 1);
 911
 912     flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
 913     if (SDL_Init (flags)) {
 914         fprintf(stderr, "Could not initialize SDL(%s) - exiting\n",
 915                 SDL_GetError());
 916         exit(1);
 917     }
 918     vi = SDL_GetVideoInfo();
 919     host_format = *(vi->vfmt);
 920
 921     /* Load a 32x32x4 image. White pixels are transparent. */
 922     filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, "qemu-icon.bmp");
 923     if (filename) {
 924         SDL_Surface *image = SDL_LoadBMP(filename);
 925         if (image) {
 926             uint32_t colorkey = SDL_MapRGB(image->format, 255, 255, 255);
 927             SDL_SetColorKey(image, SDL_SRCCOLORKEY, colorkey);
 928             SDL_WM_SetIcon(image, NULL);
 929         }
 930         g_free(filename);
 931     }
 932
 933     if (full_screen) {
 934         gui_fullscreen = 1;
 935         sdl_grab_start();
 936     }
 937
 938     dcl = g_malloc0(sizeof(DisplayChangeListener));
 939     dcl->ops = &dcl_ops;
 940     register_displaychangelistener(ds, dcl);
 941
 942     mouse_mode_notifier.notify = sdl_mouse_mode_change;
 943     qemu_add_mouse_mode_change_notifier(&mouse_mode_notifier);
 944
 945     sdl_update_caption();
 946     SDL_EnableKeyRepeat(250, 50);
 947     gui_grab = 0;
 948
 949     sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
 950     sdl_cursor_normal = SDL_GetCursor();
 951
 952     atexit(sdl_cleanup);
 953 }