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 "ui/input.h"
  34 #include "sysemu/sysemu.h"
  35 #include "x_keymap.h"
  36 #include "sdl_zoom.h"
  37
  38 static DisplayChangeListener *dcl;
  39 static DisplaySurface *surface;
  40 static SDL_Surface *real_screen;
  41 static SDL_Surface *guest_screen = NULL;
  42 static int gui_grab; /* if true, all keyboard/mouse events are grabbed */
  43 static int last_vm_running;
  44 static bool gui_saved_scaling;
  45 static int gui_saved_width;
  46 static int gui_saved_height;
  47 static int gui_saved_grab;
  48 static int gui_fullscreen;
  49 static int gui_noframe;
  50 static int gui_key_modifier_pressed;
  51 static int gui_keysym;
  52 static int gui_grab_code = KMOD_LALT | KMOD_LCTRL;
  53 static uint8_t modifiers_state[256];
  54 static SDL_Cursor *sdl_cursor_normal;
  55 static SDL_Cursor *sdl_cursor_hidden;
  56 static int absolute_enabled = 0;
  57 static int guest_cursor = 0;
  58 static int guest_x, guest_y;
  59 static SDL_Cursor *guest_sprite = NULL;
  60 static SDL_PixelFormat host_format;
  61 static int scaling_active = 0;
  62 static Notifier mouse_mode_notifier;
  63 static int idle_counter;
  64
  65 #define SDL_REFRESH_INTERVAL_BUSY 10
  66 #define SDL_MAX_IDLE_COUNT (2 * GUI_REFRESH_INTERVAL_DEFAULT \
  67                             / SDL_REFRESH_INTERVAL_BUSY + 1)
  68
  69 #if 0
  70 #define DEBUG_SDL
  71 #endif
  72
  73 static void sdl_update(DisplayChangeListener *dcl,
  74                        int x, int y, int w, int h)
  75 {
  76     SDL_Rect rec;
  77     rec.x = x;
  78     rec.y = y;
  79     rec.w = w;
  80     rec.h = h;
  81
  82 #ifdef DEBUG_SDL
  83     printf("SDL: Updating x=%d y=%d w=%d h=%d (scaling: %d)\n",
  84            x, y, w, h, scaling_active);
  85 #endif
  86
  87     if (guest_screen) {
  88         if (!scaling_active) {
  89             SDL_BlitSurface(guest_screen, &rec, real_screen, &rec);
  90         } else {
  91             if (sdl_zoom_blit(guest_screen, real_screen, SMOOTHING_ON, &rec) < 0) {
  92                 fprintf(stderr, "Zoom blit failed\n");
  93                 exit(1);
  94             }
  95         }
  96     }
  97     SDL_UpdateRect(real_screen, rec.x, rec.y, rec.w, rec.h);
  98 }
  99
 100 static void do_sdl_resize(int width, int height, int bpp)
 101 {
 102     int flags;
 103     SDL_Surface *tmp_screen;
 104
 105 #ifdef DEBUG_SDL
 106     printf("SDL: Resizing to %dx%d bpp %d\n", width, height, bpp);
 107 #endif
 108
 109     flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
 110     if (gui_fullscreen) {
 111         flags |= SDL_FULLSCREEN;
 112     } else {
 113         flags |= SDL_RESIZABLE;
 114     }
 115     if (gui_noframe)
 116         flags |= SDL_NOFRAME;
 117
 118     tmp_screen = SDL_SetVideoMode(width, height, bpp, flags);
 119     if (!real_screen) {
 120         if (!tmp_screen) {
 121             fprintf(stderr, "Could not open SDL display (%dx%dx%d): %s\n",
 122                     width, height, bpp, SDL_GetError());
 123             exit(1);
 124         }
 125     } else {
 126         /*
 127          * Revert to the previous video mode if the change of resizing or
 128          * resolution failed.
 129          */
 130         if (!tmp_screen) {
 131             fprintf(stderr, "Failed to set SDL display (%dx%dx%d): %s\n",
 132                     width, height, bpp, SDL_GetError());
 133             return;
 134         }
 135     }
 136
 137     real_screen = tmp_screen;
 138 }
 139
 140 static void sdl_switch(DisplayChangeListener *dcl,
 141                        DisplaySurface *new_surface)
 142 {
 143     PixelFormat pf;
 144
 145     /* temporary hack: allows to call sdl_switch to handle scaling changes */
 146     if (new_surface) {
 147         surface = new_surface;
 148     }
 149     pf = qemu_pixelformat_from_pixman(surface->format);
 150
 151     if (!scaling_active) {
 152         do_sdl_resize(surface_width(surface), surface_height(surface), 0);
 153     } else if (real_screen->format->BitsPerPixel !=
 154                surface_bits_per_pixel(surface)) {
 155         do_sdl_resize(real_screen->w, real_screen->h,
 156                       surface_bits_per_pixel(surface));
 157     }
 158
 159     if (guest_screen != NULL) {
 160         SDL_FreeSurface(guest_screen);
 161     }
 162
 163 #ifdef DEBUG_SDL
 164     printf("SDL: Creating surface with masks: %08x %08x %08x %08x\n",
 165            pf.rmask, pf.gmask, pf.bmask, pf.amask);
 166 #endif
 167
 168     guest_screen = SDL_CreateRGBSurfaceFrom
 169         (surface_data(surface),
 170          surface_width(surface), surface_height(surface),
 171          surface_bits_per_pixel(surface), surface_stride(surface),
 172          pf.rmask, pf.gmask,
 173          pf.bmask, pf.amask);
 174 }
 175
 176 static bool sdl_check_format(DisplayChangeListener *dcl,
 177                              pixman_format_code_t format)
 178 {
 179     /*
 180      * We let SDL convert for us a few more formats than,
 181      * the native ones. Thes are the ones I have tested.
 182      */
 183     return (format == PIXMAN_x8r8g8b8 ||
 184             format == PIXMAN_b8g8r8x8 ||
 185             format == PIXMAN_x1r5g5b5 ||
 186             format == PIXMAN_r5g6b5);
 187 }
 188
 189 /* generic keyboard conversion */
 190
 191 #include "sdl_keysym.h"
 192
 193 static kbd_layout_t *kbd_layout = NULL;
 194
 195 static uint8_t sdl_keyevent_to_keycode_generic(const SDL_KeyboardEvent *ev)
 196 {
 197     int keysym;
 198     /* workaround for X11+SDL bug with AltGR */
 199     keysym = ev->keysym.sym;
 200     if (keysym == 0 && ev->keysym.scancode == 113)
 201         keysym = SDLK_MODE;
 202     /* For Japanese key '\' and '|' */
 203     if (keysym == 92 && ev->keysym.scancode == 133) {
 204         keysym = 0xa5;
 205     }
 206     return keysym2scancode(kbd_layout, keysym) & SCANCODE_KEYMASK;
 207 }
 208
 209 /* specific keyboard conversions from scan codes */
 210
 211 #if defined(_WIN32)
 212
 213 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 214 {
 215     return ev->keysym.scancode;
 216 }
 217
 218 #else
 219
 220 #if defined(SDL_VIDEO_DRIVER_X11)
 221 #include <X11/XKBlib.h>
 222
 223 static int check_for_evdev(void)
 224 {
 225     SDL_SysWMinfo info;
 226     XkbDescPtr desc = NULL;
 227     int has_evdev = 0;
 228     char *keycodes = NULL;
 229
 230     SDL_VERSION(&info.version);
 231     if (!SDL_GetWMInfo(&info)) {
 232         return 0;
 233     }
 234     desc = XkbGetKeyboard(info.info.x11.display,
 235                           XkbGBN_AllComponentsMask,
 236                           XkbUseCoreKbd);
 237     if (desc && desc->names) {
 238         keycodes = XGetAtomName(info.info.x11.display, desc->names->keycodes);
 239         if (keycodes == NULL) {
 240             fprintf(stderr, "could not lookup keycode name\n");
 241         } else if (strstart(keycodes, "evdev", NULL)) {
 242             has_evdev = 1;
 243         } else if (!strstart(keycodes, "xfree86", NULL)) {
 244             fprintf(stderr, "unknown keycodes `%s', please report to "
 245                     "qemu-devel@nongnu.org\n", keycodes);
 246         }
 247     }
 248
 249     if (desc) {
 250         XkbFreeKeyboard(desc, XkbGBN_AllComponentsMask, True);
 251     }
 252     if (keycodes) {
 253         XFree(keycodes);
 254     }
 255     return has_evdev;
 256 }
 257 #else
 258 static int check_for_evdev(void)
 259 {
 260         return 0;
 261 }
 262 #endif
 263
 264 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 265 {
 266     int keycode;
 267     static int has_evdev = -1;
 268
 269     if (has_evdev == -1)
 270         has_evdev = check_for_evdev();
 271
 272     keycode = ev->keysym.scancode;
 273
 274     if (keycode < 9) {
 275         keycode = 0;
 276     } else if (keycode < 97) {
 277         keycode -= 8; /* just an offset */
 278     } else if (keycode < 158) {
 279         /* use conversion table */
 280         if (has_evdev)
 281             keycode = translate_evdev_keycode(keycode - 97);
 282         else
 283             keycode = translate_xfree86_keycode(keycode - 97);
 284     } else if (keycode == 208) { /* Hiragana_Katakana */
 285         keycode = 0x70;
 286     } else if (keycode == 211) { /* backslash */
 287         keycode = 0x73;
 288     } else {
 289         keycode = 0;
 290     }
 291     return keycode;
 292 }
 293
 294 #endif
 295
 296 static void reset_keys(void)
 297 {
 298     int i;
 299     for(i = 0; i < 256; i++) {
 300         if (modifiers_state[i]) {
 301             qemu_input_event_send_key_number(dcl->con, i, false);
 302             modifiers_state[i] = 0;
 303         }
 304     }
 305 }
 306
 307 static void sdl_process_key(SDL_KeyboardEvent *ev)
 308 {
 309     int keycode;
 310
 311     if (ev->keysym.sym == SDLK_PAUSE) {
 312         /* specific case */
 313         qemu_input_event_send_key_qcode(dcl->con, Q_KEY_CODE_PAUSE,
 314                                         ev->type == SDL_KEYDOWN);
 315         return;
 316     }
 317
 318     if (kbd_layout) {
 319         keycode = sdl_keyevent_to_keycode_generic(ev);
 320     } else {
 321         keycode = sdl_keyevent_to_keycode(ev);
 322     }
 323
 324     switch(keycode) {
 325     case 0x00:
 326         /* sent when leaving window: reset the modifiers state */
 327         reset_keys();
 328         return;
 329     case 0x2a:                          /* Left Shift */
 330     case 0x36:                          /* Right Shift */
 331     case 0x1d:                          /* Left CTRL */
 332     case 0x9d:                          /* Right CTRL */
 333     case 0x38:                          /* Left ALT */
 334     case 0xb8:                         /* Right ALT */
 335         if (ev->type == SDL_KEYUP)
 336             modifiers_state[keycode] = 0;
 337         else
 338             modifiers_state[keycode] = 1;
 339         break;
 340 #define QEMU_SDL_VERSION ((SDL_MAJOR_VERSION << 8) + SDL_MINOR_VERSION)
 341 #if QEMU_SDL_VERSION < 0x102 || QEMU_SDL_VERSION == 0x102 && SDL_PATCHLEVEL < 14
 342         /* SDL versions before 1.2.14 don't support key up for caps/num lock. */
 343     case 0x45: /* num lock */
 344     case 0x3a: /* caps lock */
 345         /* SDL does not send the key up event, so we generate it */
 346         qemu_input_event_send_key_number(dcl->con, keycode, true);
 347         qemu_input_event_send_key_number(dcl->con, keycode, false);
 348         return;
 349 #endif
 350     }
 351
 352     /* now send the key code */
 353     qemu_input_event_send_key_number(dcl->con, keycode,
 354                                      ev->type == SDL_KEYDOWN);
 355 }
 356
 357 static void sdl_update_caption(void)
 358 {
 359     char win_title[1024];
 360     char icon_title[1024];
 361     const char *status = "";
 362
 363     if (!runstate_is_running())
 364         status = " [Stopped]";
 365     else if (gui_grab) {
 366         if (alt_grab)
 367             status = " - Press Ctrl-Alt-Shift to exit mouse grab";
 368         else if (ctrl_grab)
 369             status = " - Press Right-Ctrl to exit mouse grab";
 370         else
 371             status = " - Press Ctrl-Alt to exit mouse grab";
 372     }
 373
 374     if (qemu_name) {
 375         snprintf(win_title, sizeof(win_title), "QEMU (%s)%s", qemu_name, status);
 376         snprintf(icon_title, sizeof(icon_title), "QEMU (%s)", qemu_name);
 377     } else {
 378         snprintf(win_title, sizeof(win_title), "QEMU%s", status);
 379         snprintf(icon_title, sizeof(icon_title), "QEMU");
 380     }
 381
 382     SDL_WM_SetCaption(win_title, icon_title);
 383 }
 384
 385 static void sdl_hide_cursor(void)
 386 {
 387     if (!cursor_hide)
 388         return;
 389
 390     if (qemu_input_is_absolute()) {
 391         SDL_ShowCursor(1);
 392         SDL_SetCursor(sdl_cursor_hidden);
 393     } else {
 394         SDL_ShowCursor(0);
 395     }
 396 }
 397
 398 static void sdl_show_cursor(void)
 399 {
 400     if (!cursor_hide)
 401         return;
 402
 403     if (!qemu_input_is_absolute() || !qemu_console_is_graphic(NULL)) {
 404         SDL_ShowCursor(1);
 405         if (guest_cursor &&
 406                 (gui_grab || qemu_input_is_absolute() || absolute_enabled))
 407             SDL_SetCursor(guest_sprite);
 408         else
 409             SDL_SetCursor(sdl_cursor_normal);
 410     }
 411 }
 412
 413 static void sdl_grab_start(void)
 414 {
 415     /*
 416      * If the application is not active, do not try to enter grab state. This
 417      * prevents 'SDL_WM_GrabInput(SDL_GRAB_ON)' from blocking all the
 418      * application (SDL bug).
 419      */
 420     if (!(SDL_GetAppState() & SDL_APPINPUTFOCUS)) {
 421         return;
 422     }
 423     if (guest_cursor) {
 424         SDL_SetCursor(guest_sprite);
 425         if (!qemu_input_is_absolute() && !absolute_enabled) {
 426             SDL_WarpMouse(guest_x, guest_y);
 427         }
 428     } else
 429         sdl_hide_cursor();
 430     SDL_WM_GrabInput(SDL_GRAB_ON);
 431     gui_grab = 1;
 432     sdl_update_caption();
 433 }
 434
 435 static void sdl_grab_end(void)
 436 {
 437     SDL_WM_GrabInput(SDL_GRAB_OFF);
 438     gui_grab = 0;
 439     sdl_show_cursor();
 440     sdl_update_caption();
 441 }
 442
 443 static void absolute_mouse_grab(void)
 444 {
 445     int mouse_x, mouse_y;
 446
 447     SDL_GetMouseState(&mouse_x, &mouse_y);
 448     if (mouse_x > 0 && mouse_x < real_screen->w - 1 &&
 449         mouse_y > 0 && mouse_y < real_screen->h - 1) {
 450         sdl_grab_start();
 451     }
 452 }
 453
 454 static void sdl_mouse_mode_change(Notifier *notify, void *data)
 455 {
 456     if (qemu_input_is_absolute()) {
 457         if (!absolute_enabled) {
 458             absolute_enabled = 1;
 459             if (qemu_console_is_graphic(NULL)) {
 460                 absolute_mouse_grab();
 461             }
 462         }
 463     } else if (absolute_enabled) {
 464         if (!gui_fullscreen) {
 465             sdl_grab_end();
 466         }
 467         absolute_enabled = 0;
 468     }
 469 }
 470
 471 static void sdl_send_mouse_event(int dx, int dy, int x, int y, int state)
 472 {
 473     static uint32_t bmap[INPUT_BUTTON__MAX] = {
 474         [INPUT_BUTTON_LEFT]       = SDL_BUTTON(SDL_BUTTON_LEFT),
 475         [INPUT_BUTTON_MIDDLE]     = SDL_BUTTON(SDL_BUTTON_MIDDLE),
 476         [INPUT_BUTTON_RIGHT]      = SDL_BUTTON(SDL_BUTTON_RIGHT),
 477         [INPUT_BUTTON_WHEELUP]    = SDL_BUTTON(SDL_BUTTON_WHEELUP),
 478         [INPUT_BUTTON_WHEELDOWN]  = SDL_BUTTON(SDL_BUTTON_WHEELDOWN),
 479     };
 480     static uint32_t prev_state;
 481
 482     if (prev_state != state) {
 483         qemu_input_update_buttons(dcl->con, bmap, prev_state, state);
 484         prev_state = state;
 485     }
 486
 487     if (qemu_input_is_absolute()) {
 488         qemu_input_queue_abs(dcl->con, INPUT_AXIS_X, x,
 489                              real_screen->w);
 490         qemu_input_queue_abs(dcl->con, INPUT_AXIS_Y, y,
 491                              real_screen->h);
 492     } else {
 493         if (guest_cursor) {
 494             x -= guest_x;
 495             y -= guest_y;
 496             guest_x += x;
 497             guest_y += y;
 498             dx = x;
 499             dy = y;
 500         }
 501         qemu_input_queue_rel(dcl->con, INPUT_AXIS_X, dx);
 502         qemu_input_queue_rel(dcl->con, INPUT_AXIS_Y, dy);
 503     }
 504     qemu_input_event_sync();
 505 }
 506
 507 static void sdl_scale(int width, int height)
 508 {
 509     int bpp = real_screen->format->BitsPerPixel;
 510
 511 #ifdef DEBUG_SDL
 512     printf("SDL: Scaling to %dx%d bpp %d\n", width, height, bpp);
 513 #endif
 514
 515     if (bpp != 16 && bpp != 32) {
 516         bpp = 32;
 517     }
 518     do_sdl_resize(width, height, bpp);
 519     scaling_active = 1;
 520 }
 521
 522 static void toggle_full_screen(void)
 523 {
 524     int width = surface_width(surface);
 525     int height = surface_height(surface);
 526     int bpp = surface_bits_per_pixel(surface);
 527
 528     gui_fullscreen = !gui_fullscreen;
 529     if (gui_fullscreen) {
 530         gui_saved_width = real_screen->w;
 531         gui_saved_height = real_screen->h;
 532         gui_saved_scaling = scaling_active;
 533
 534         do_sdl_resize(width, height, bpp);
 535         scaling_active = 0;
 536
 537         gui_saved_grab = gui_grab;
 538         sdl_grab_start();
 539     } else {
 540         if (gui_saved_scaling) {
 541             sdl_scale(gui_saved_width, gui_saved_height);
 542         } else {
 543             do_sdl_resize(width, height, 0);
 544         }
 545         if (!gui_saved_grab || !qemu_console_is_graphic(NULL)) {
 546             sdl_grab_end();
 547         }
 548     }
 549     graphic_hw_invalidate(NULL);
 550     graphic_hw_update(NULL);
 551 }
 552
 553 static void handle_keydown(SDL_Event *ev)
 554 {
 555     int mod_state;
 556     int keycode;
 557
 558     if (alt_grab) {
 559         mod_state = (SDL_GetModState() & (gui_grab_code | KMOD_LSHIFT)) ==
 560                     (gui_grab_code | KMOD_LSHIFT);
 561     } else if (ctrl_grab) {
 562         mod_state = (SDL_GetModState() & KMOD_RCTRL) == KMOD_RCTRL;
 563     } else {
 564         mod_state = (SDL_GetModState() & gui_grab_code) == gui_grab_code;
 565     }
 566     gui_key_modifier_pressed = mod_state;
 567
 568     if (gui_key_modifier_pressed) {
 569         keycode = sdl_keyevent_to_keycode(&ev->key);
 570         switch (keycode) {
 571         case 0x21: /* 'f' key on US keyboard */
 572             toggle_full_screen();
 573             gui_keysym = 1;
 574             break;
 575         case 0x16: /* 'u' key on US keyboard */
 576             if (scaling_active) {
 577                 scaling_active = 0;
 578                 sdl_switch(dcl, NULL);
 579                 graphic_hw_invalidate(NULL);
 580                 graphic_hw_update(NULL);
 581             }
 582             gui_keysym = 1;
 583             break;
 584         case 0x02 ... 0x0a: /* '1' to '9' keys */
 585             /* Reset the modifiers sent to the current console */
 586             reset_keys();
 587             console_select(keycode - 0x02);
 588             gui_keysym = 1;
 589             if (gui_fullscreen) {
 590                 break;
 591             }
 592             if (!qemu_console_is_graphic(NULL)) {
 593                 /* release grab if going to a text console */
 594                 if (gui_grab) {
 595                     sdl_grab_end();
 596                 } else if (absolute_enabled) {
 597                     sdl_show_cursor();
 598                 }
 599             } else if (absolute_enabled) {
 600                 sdl_hide_cursor();
 601                 absolute_mouse_grab();
 602             }
 603             break;
 604         case 0x1b: /* '+' */
 605         case 0x35: /* '-' */
 606             if (!gui_fullscreen) {
 607                 int width = MAX(real_screen->w + (keycode == 0x1b ? 50 : -50),
 608                                 160);
 609                 int height = (surface_height(surface) * width) /
 610                     surface_width(surface);
 611
 612                 sdl_scale(width, height);
 613                 graphic_hw_invalidate(NULL);
 614                 graphic_hw_update(NULL);
 615                 gui_keysym = 1;
 616             }
 617         default:
 618             break;
 619         }
 620     } else if (!qemu_console_is_graphic(NULL)) {
 621         int keysym = 0;
 622
 623         if (ev->key.keysym.mod & (KMOD_LCTRL | KMOD_RCTRL)) {
 624             switch (ev->key.keysym.sym) {
 625             case SDLK_UP:
 626                 keysym = QEMU_KEY_CTRL_UP;
 627                 break;
 628             case SDLK_DOWN:
 629                 keysym = QEMU_KEY_CTRL_DOWN;
 630                 break;
 631             case SDLK_LEFT:
 632                 keysym = QEMU_KEY_CTRL_LEFT;
 633                 break;
 634             case SDLK_RIGHT:
 635                 keysym = QEMU_KEY_CTRL_RIGHT;
 636                 break;
 637             case SDLK_HOME:
 638                 keysym = QEMU_KEY_CTRL_HOME;
 639                 break;
 640             case SDLK_END:
 641                 keysym = QEMU_KEY_CTRL_END;
 642                 break;
 643             case SDLK_PAGEUP:
 644                 keysym = QEMU_KEY_CTRL_PAGEUP;
 645                 break;
 646             case SDLK_PAGEDOWN:
 647                 keysym = QEMU_KEY_CTRL_PAGEDOWN;
 648                 break;
 649             default:
 650                 break;
 651             }
 652         } else {
 653             switch (ev->key.keysym.sym) {
 654             case SDLK_UP:
 655                 keysym = QEMU_KEY_UP;
 656                 break;
 657             case SDLK_DOWN:
 658                 keysym = QEMU_KEY_DOWN;
 659                 break;
 660             case SDLK_LEFT:
 661                 keysym = QEMU_KEY_LEFT;
 662                 break;
 663             case SDLK_RIGHT:
 664                 keysym = QEMU_KEY_RIGHT;
 665                 break;
 666             case SDLK_HOME:
 667                 keysym = QEMU_KEY_HOME;
 668                 break;
 669             case SDLK_END:
 670                 keysym = QEMU_KEY_END;
 671                 break;
 672             case SDLK_PAGEUP:
 673                 keysym = QEMU_KEY_PAGEUP;
 674                 break;
 675             case SDLK_PAGEDOWN:
 676                 keysym = QEMU_KEY_PAGEDOWN;
 677                 break;
 678             case SDLK_BACKSPACE:
 679                 keysym = QEMU_KEY_BACKSPACE;
 680                 break;
 681             case SDLK_DELETE:
 682                 keysym = QEMU_KEY_DELETE;
 683                 break;
 684             default:
 685                 break;
 686             }
 687         }
 688         if (keysym) {
 689             kbd_put_keysym(keysym);
 690         } else if (ev->key.keysym.unicode != 0) {
 691             kbd_put_keysym(ev->key.keysym.unicode);
 692         }
 693     }
 694     if (qemu_console_is_graphic(NULL) && !gui_keysym) {
 695         sdl_process_key(&ev->key);
 696     }
 697 }
 698
 699 static void handle_keyup(SDL_Event *ev)
 700 {
 701     int mod_state;
 702
 703     if (!alt_grab) {
 704         mod_state = (ev->key.keysym.mod & gui_grab_code);
 705     } else {
 706         mod_state = (ev->key.keysym.mod & (gui_grab_code | KMOD_LSHIFT));
 707     }
 708     if (!mod_state && gui_key_modifier_pressed) {
 709         gui_key_modifier_pressed = 0;
 710         if (gui_keysym == 0) {
 711             /* exit/enter grab if pressing Ctrl-Alt */
 712             if (!gui_grab) {
 713                 if (qemu_console_is_graphic(NULL)) {
 714                     sdl_grab_start();
 715                 }
 716             } else if (!gui_fullscreen) {
 717                 sdl_grab_end();
 718             }
 719             /* SDL does not send back all the modifiers key, so we must
 720              * correct it. */
 721             reset_keys();
 722             return;
 723         }
 724         gui_keysym = 0;
 725     }
 726     if (qemu_console_is_graphic(NULL) && !gui_keysym) {
 727         sdl_process_key(&ev->key);
 728     }
 729 }
 730
 731 static void handle_mousemotion(SDL_Event *ev)
 732 {
 733     int max_x, max_y;
 734
 735     if (qemu_console_is_graphic(NULL) &&
 736         (qemu_input_is_absolute() || absolute_enabled)) {
 737         max_x = real_screen->w - 1;
 738         max_y = real_screen->h - 1;
 739         if (gui_grab && (ev->motion.x == 0 || ev->motion.y == 0 ||
 740             ev->motion.x == max_x || ev->motion.y == max_y)) {
 741             sdl_grab_end();
 742         }
 743         if (!gui_grab &&
 744             (ev->motion.x > 0 && ev->motion.x < max_x &&
 745             ev->motion.y > 0 && ev->motion.y < max_y)) {
 746             sdl_grab_start();
 747         }
 748     }
 749     if (gui_grab || qemu_input_is_absolute() || absolute_enabled) {
 750         sdl_send_mouse_event(ev->motion.xrel, ev->motion.yrel,
 751                              ev->motion.x, ev->motion.y, ev->motion.state);
 752     }
 753 }
 754
 755 static void handle_mousebutton(SDL_Event *ev)
 756 {
 757     int buttonstate = SDL_GetMouseState(NULL, NULL);
 758     SDL_MouseButtonEvent *bev;
 759
 760     if (!qemu_console_is_graphic(NULL)) {
 761         return;
 762     }
 763
 764     bev = &ev->button;
 765     if (!gui_grab && !qemu_input_is_absolute()) {
 766         if (ev->type == SDL_MOUSEBUTTONUP && bev->button == SDL_BUTTON_LEFT) {
 767             /* start grabbing all events */
 768             sdl_grab_start();
 769         }
 770     } else {
 771         if (ev->type == SDL_MOUSEBUTTONDOWN) {
 772             buttonstate |= SDL_BUTTON(bev->button);
 773         } else {
 774             buttonstate &= ~SDL_BUTTON(bev->button);
 775         }
 776         sdl_send_mouse_event(0, 0, bev->x, bev->y, buttonstate);
 777     }
 778 }
 779
 780 static void handle_activation(SDL_Event *ev)
 781 {
 782 #ifdef _WIN32
 783     /* Disable grab if the window no longer has the focus
 784      * (Windows-only workaround) */
 785     if (gui_grab && ev->active.state == SDL_APPINPUTFOCUS &&
 786         !ev->active.gain && !gui_fullscreen) {
 787         sdl_grab_end();
 788     }
 789 #endif
 790     if (!gui_grab && ev->active.gain && qemu_console_is_graphic(NULL) &&
 791         (qemu_input_is_absolute() || absolute_enabled)) {
 792         absolute_mouse_grab();
 793     }
 794     if (ev->active.state & SDL_APPACTIVE) {
 795         if (ev->active.gain) {
 796             /* Back to default interval */
 797             update_displaychangelistener(dcl, GUI_REFRESH_INTERVAL_DEFAULT);
 798         } else {
 799             /* Sleeping interval.  Not using the long default here as
 800              * sdl_refresh does not only update the guest screen, but
 801              * also checks for gui events. */
 802             update_displaychangelistener(dcl, 500);
 803         }
 804     }
 805 }
 806
 807 static void sdl_refresh(DisplayChangeListener *dcl)
 808 {
 809     SDL_Event ev1, *ev = &ev1;
 810     int idle = 1;
 811
 812     if (last_vm_running != runstate_is_running()) {
 813         last_vm_running = runstate_is_running();
 814         sdl_update_caption();
 815     }
 816
 817     graphic_hw_update(NULL);
 818     SDL_EnableUNICODE(!qemu_console_is_graphic(NULL));
 819
 820     while (SDL_PollEvent(ev)) {
 821         switch (ev->type) {
 822         case SDL_VIDEOEXPOSE:
 823             sdl_update(dcl, 0, 0, real_screen->w, real_screen->h);
 824             break;
 825         case SDL_KEYDOWN:
 826             idle = 0;
 827             handle_keydown(ev);
 828             break;
 829         case SDL_KEYUP:
 830             idle = 0;
 831             handle_keyup(ev);
 832             break;
 833         case SDL_QUIT:
 834             if (!no_quit) {
 835                 no_shutdown = 0;
 836                 qemu_system_shutdown_request();
 837             }
 838             break;
 839         case SDL_MOUSEMOTION:
 840             idle = 0;
 841             handle_mousemotion(ev);
 842             break;
 843         case SDL_MOUSEBUTTONDOWN:
 844         case SDL_MOUSEBUTTONUP:
 845             idle = 0;
 846             handle_mousebutton(ev);
 847             break;
 848         case SDL_ACTIVEEVENT:
 849             handle_activation(ev);
 850             break;
 851         case SDL_VIDEORESIZE:
 852             sdl_scale(ev->resize.w, ev->resize.h);
 853             graphic_hw_invalidate(NULL);
 854             graphic_hw_update(NULL);
 855             break;
 856         default:
 857             break;
 858         }
 859     }
 860
 861     if (idle) {
 862         if (idle_counter < SDL_MAX_IDLE_COUNT) {
 863             idle_counter++;
 864             if (idle_counter >= SDL_MAX_IDLE_COUNT) {
 865                 dcl->update_interval = GUI_REFRESH_INTERVAL_DEFAULT;
 866             }
 867         }
 868     } else {
 869         idle_counter = 0;
 870         dcl->update_interval = SDL_REFRESH_INTERVAL_BUSY;
 871     }
 872 }
 873
 874 static void sdl_mouse_warp(DisplayChangeListener *dcl,
 875                            int x, int y, int on)
 876 {
 877     if (on) {
 878         if (!guest_cursor)
 879             sdl_show_cursor();
 880         if (gui_grab || qemu_input_is_absolute() || absolute_enabled) {
 881             SDL_SetCursor(guest_sprite);
 882             if (!qemu_input_is_absolute() && !absolute_enabled) {
 883                 SDL_WarpMouse(x, y);
 884             }
 885         }
 886     } else if (gui_grab)
 887         sdl_hide_cursor();
 888     guest_cursor = on;
 889     guest_x = x, guest_y = y;
 890 }
 891
 892 static void sdl_mouse_define(DisplayChangeListener *dcl,
 893                              QEMUCursor *c)
 894 {
 895     uint8_t *image, *mask;
 896     int bpl;
 897
 898     if (guest_sprite)
 899         SDL_FreeCursor(guest_sprite);
 900
 901     bpl = cursor_get_mono_bpl(c);
 902     image = g_malloc0(bpl * c->height);
 903     mask  = g_malloc0(bpl * c->height);
 904     cursor_get_mono_image(c, 0x000000, image);
 905     cursor_get_mono_mask(c, 0, mask);
 906     guest_sprite = SDL_CreateCursor(image, mask, c->width, c->height,
 907                                     c->hot_x, c->hot_y);
 908     g_free(image);
 909     g_free(mask);
 910
 911     if (guest_cursor &&
 912             (gui_grab || qemu_input_is_absolute() || absolute_enabled))
 913         SDL_SetCursor(guest_sprite);
 914 }
 915
 916 static void sdl_cleanup(void)
 917 {
 918     if (guest_sprite)
 919         SDL_FreeCursor(guest_sprite);
 920     SDL_QuitSubSystem(SDL_INIT_VIDEO);
 921 }
 922
 923 static const DisplayChangeListenerOps dcl_ops = {
 924     .dpy_name             = "sdl",
 925     .dpy_gfx_update       = sdl_update,
 926     .dpy_gfx_switch       = sdl_switch,
 927     .dpy_gfx_check_format = sdl_check_format,
 928     .dpy_refresh          = sdl_refresh,
 929     .dpy_mouse_set        = sdl_mouse_warp,
 930     .dpy_cursor_define    = sdl_mouse_define,
 931 };
 932
 933 void sdl_display_early_init(int opengl)
 934 {
 935     if (opengl == 1 /* on */) {
 936         fprintf(stderr,
 937                 "SDL1 display code has no opengl support.\n"
 938                 "Please recompile qemu with SDL2, using\n"
 939                 "./configure --enable-sdl --with-sdlabi=2.0\n");
 940     }
 941 }
 942
 943 void sdl_display_init(DisplayState *ds, int full_screen, int no_frame)
 944 {
 945     int flags;
 946     uint8_t data = 0;
 947     const SDL_VideoInfo *vi;
 948     char *filename;
 949
 950 #if defined(__APPLE__)
 951     /* always use generic keymaps */
 952     if (!keyboard_layout)
 953         keyboard_layout = "en-us";
 954 #endif
 955     if(keyboard_layout) {
 956         kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
 957         if (!kbd_layout)
 958             exit(1);
 959     }
 960
 961     if (no_frame)
 962         gui_noframe = 1;
 963
 964     if (!full_screen) {
 965         setenv("SDL_VIDEO_ALLOW_SCREENSAVER", "1", 0);
 966     }
 967 #ifdef __linux__
 968     /* on Linux, SDL may use fbcon|directfb|svgalib when run without
 969      * accessible $DISPLAY to open X11 window.  This is often the case
 970      * when qemu is run using sudo.  But in this case, and when actually
 971      * run in X11 environment, SDL fights with X11 for the video card,
 972      * making current display unavailable, often until reboot.
 973      * So make x11 the default SDL video driver if this variable is unset.
 974      * This is a bit hackish but saves us from bigger problem.
 975      * Maybe it's a good idea to fix this in SDL instead.
 976      */
 977     setenv("SDL_VIDEODRIVER", "x11", 0);
 978 #endif
 979
 980     /* Enable normal up/down events for Caps-Lock and Num-Lock keys.
 981      * This requires SDL >= 1.2.14. */
 982     setenv("SDL_DISABLE_LOCK_KEYS", "1", 1);
 983
 984     flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
 985     if (SDL_Init (flags)) {
 986         fprintf(stderr, "Could not initialize SDL(%s) - exiting\n",
 987                 SDL_GetError());
 988         exit(1);
 989     }
 990     vi = SDL_GetVideoInfo();
 991     host_format = *(vi->vfmt);
 992
 993     /* Load a 32x32x4 image. White pixels are transparent. */
 994     filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, "qemu-icon.bmp");
 995     if (filename) {
 996         SDL_Surface *image = SDL_LoadBMP(filename);
 997         if (image) {
 998             uint32_t colorkey = SDL_MapRGB(image->format, 255, 255, 255);
 999             SDL_SetColorKey(image, SDL_SRCCOLORKEY, colorkey);
1000             SDL_WM_SetIcon(image, NULL);
1001         }
1002         g_free(filename);
1003     }
1004
1005     if (full_screen) {
1006         gui_fullscreen = 1;
1007         sdl_grab_start();
1008     }
1009
1010     dcl = g_new0(DisplayChangeListener, 1);
1011     dcl->ops = &dcl_ops;
1012     register_displaychangelistener(dcl);
1013
1014     mouse_mode_notifier.notify = sdl_mouse_mode_change;
1015     qemu_add_mouse_mode_change_notifier(&mouse_mode_notifier);
1016
1017     sdl_update_caption();
1018     SDL_EnableKeyRepeat(250, 50);
1019     gui_grab = 0;
1020
1021     sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
1022     sdl_cursor_normal = SDL_GetCursor();
1023
1024     atexit(sdl_cleanup);
1025 }