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 "qemu/osdep.h"
  29 #include <SDL.h>
  30 #include <SDL_syswm.h>
  31
  32 #include "qemu-common.h"
  33 #include "ui/console.h"
  34 #include "ui/input.h"
  35 #include "sysemu/sysemu.h"
  36 #include "x_keymap.h"
  37 #include "sdl_zoom.h"
  38
  39 static DisplayChangeListener *dcl;
  40 static DisplaySurface *surface;
  41 static SDL_Surface *real_screen;
  42 static SDL_Surface *guest_screen = NULL;
  43 static int gui_grab; /* if true, all keyboard/mouse events are grabbed */
  44 static int last_vm_running;
  45 static bool gui_saved_scaling;
  46 static int gui_saved_width;
  47 static int gui_saved_height;
  48 static int gui_saved_grab;
  49 static int gui_fullscreen;
  50 static int gui_noframe;
  51 static int gui_key_modifier_pressed;
  52 static int gui_keysym;
  53 static int gui_grab_code = KMOD_LALT | KMOD_LCTRL;
  54 static uint8_t modifiers_state[256];
  55 static SDL_Cursor *sdl_cursor_normal;
  56 static SDL_Cursor *sdl_cursor_hidden;
  57 static int absolute_enabled = 0;
  58 static int guest_cursor = 0;
  59 static int guest_x, guest_y;
  60 static SDL_Cursor *guest_sprite = NULL;
  61 static SDL_PixelFormat host_format;
  62 static int scaling_active = 0;
  63 static Notifier mouse_mode_notifier;
  64 static int idle_counter;
  65
  66 #define SDL_REFRESH_INTERVAL_BUSY 10
  67 #define SDL_MAX_IDLE_COUNT (2 * GUI_REFRESH_INTERVAL_DEFAULT \
  68                             / SDL_REFRESH_INTERVAL_BUSY + 1)
  69
  70 #if 0
  71 #define DEBUG_SDL
  72 #endif
  73
  74 static void sdl_update(DisplayChangeListener *dcl,
  75                        int x, int y, int w, int h)
  76 {
  77     SDL_Rect rec;
  78     rec.x = x;
  79     rec.y = y;
  80     rec.w = w;
  81     rec.h = h;
  82
  83 #ifdef DEBUG_SDL
  84     printf("SDL: Updating x=%d y=%d w=%d h=%d (scaling: %d)\n",
  85            x, y, w, h, scaling_active);
  86 #endif
  87
  88     if (guest_screen) {
  89         if (!scaling_active) {
  90             SDL_BlitSurface(guest_screen, &rec, real_screen, &rec);
  91         } else {
  92             if (sdl_zoom_blit(guest_screen, real_screen, SMOOTHING_ON, &rec) < 0) {
  93                 fprintf(stderr, "Zoom blit failed\n");
  94                 exit(1);
  95             }
  96         }
  97     }
  98     SDL_UpdateRect(real_screen, rec.x, rec.y, rec.w, rec.h);
  99 }
 100
 101 static void do_sdl_resize(int width, int height, int bpp)
 102 {
 103     int flags;
 104     SDL_Surface *tmp_screen;
 105
 106 #ifdef DEBUG_SDL
 107     printf("SDL: Resizing to %dx%d bpp %d\n", width, height, bpp);
 108 #endif
 109
 110     flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
 111     if (gui_fullscreen) {
 112         flags |= SDL_FULLSCREEN;
 113     } else {
 114         flags |= SDL_RESIZABLE;
 115     }
 116     if (gui_noframe)
 117         flags |= SDL_NOFRAME;
 118
 119     tmp_screen = SDL_SetVideoMode(width, height, bpp, flags);
 120     if (!real_screen) {
 121         if (!tmp_screen) {
 122             fprintf(stderr, "Could not open SDL display (%dx%dx%d): %s\n",
 123                     width, height, bpp, SDL_GetError());
 124             exit(1);
 125         }
 126     } else {
 127         /*
 128          * Revert to the previous video mode if the change of resizing or
 129          * resolution failed.
 130          */
 131         if (!tmp_screen) {
 132             fprintf(stderr, "Failed to set SDL display (%dx%dx%d): %s\n",
 133                     width, height, bpp, SDL_GetError());
 134             return;
 135         }
 136     }
 137
 138     real_screen = tmp_screen;
 139 }
 140
 141 static void sdl_switch(DisplayChangeListener *dcl,
 142                        DisplaySurface *new_surface)
 143 {
 144     PixelFormat pf;
 145
 146     /* temporary hack: allows to call sdl_switch to handle scaling changes */
 147     if (new_surface) {
 148         surface = new_surface;
 149     }
 150     pf = qemu_pixelformat_from_pixman(surface->format);
 151
 152     if (!scaling_active) {
 153         do_sdl_resize(surface_width(surface), surface_height(surface), 0);
 154     } else if (real_screen->format->BitsPerPixel !=
 155                surface_bits_per_pixel(surface)) {
 156         do_sdl_resize(real_screen->w, real_screen->h,
 157                       surface_bits_per_pixel(surface));
 158     }
 159
 160     if (guest_screen != NULL) {
 161         SDL_FreeSurface(guest_screen);
 162     }
 163
 164 #ifdef DEBUG_SDL
 165     printf("SDL: Creating surface with masks: %08x %08x %08x %08x\n",
 166            pf.rmask, pf.gmask, pf.bmask, pf.amask);
 167 #endif
 168
 169     guest_screen = SDL_CreateRGBSurfaceFrom
 170         (surface_data(surface),
 171          surface_width(surface), surface_height(surface),
 172          surface_bits_per_pixel(surface), surface_stride(surface),
 173          pf.rmask, pf.gmask,
 174          pf.bmask, pf.amask);
 175 }
 176
 177 static bool sdl_check_format(DisplayChangeListener *dcl,
 178                              pixman_format_code_t format)
 179 {
 180     /*
 181      * We let SDL convert for us a few more formats than,
 182      * the native ones. Thes are the ones I have tested.
 183      */
 184     return (format == PIXMAN_x8r8g8b8 ||
 185             format == PIXMAN_b8g8r8x8 ||
 186             format == PIXMAN_x1r5g5b5 ||
 187             format == PIXMAN_r5g6b5);
 188 }
 189
 190 /* generic keyboard conversion */
 191
 192 #include "sdl_keysym.h"
 193
 194 static kbd_layout_t *kbd_layout = NULL;
 195
 196 static uint8_t sdl_keyevent_to_keycode_generic(const SDL_KeyboardEvent *ev)
 197 {
 198     int keysym;
 199     /* workaround for X11+SDL bug with AltGR */
 200     keysym = ev->keysym.sym;
 201     if (keysym == 0 && ev->keysym.scancode == 113)
 202         keysym = SDLK_MODE;
 203     /* For Japanese key '\' and '|' */
 204     if (keysym == 92 && ev->keysym.scancode == 133) {
 205         keysym = 0xa5;
 206     }
 207     return keysym2scancode(kbd_layout, keysym) & SCANCODE_KEYMASK;
 208 }
 209
 210 /* specific keyboard conversions from scan codes */
 211
 212 #if defined(_WIN32)
 213
 214 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 215 {
 216     return ev->keysym.scancode;
 217 }
 218
 219 #else
 220
 221 #if defined(SDL_VIDEO_DRIVER_X11)
 222 #include <X11/XKBlib.h>
 223
 224 static int check_for_evdev(void)
 225 {
 226     SDL_SysWMinfo info;
 227     XkbDescPtr desc = NULL;
 228     int has_evdev = 0;
 229     char *keycodes = NULL;
 230
 231     SDL_VERSION(&info.version);
 232     if (!SDL_GetWMInfo(&info)) {
 233         return 0;
 234     }
 235     desc = XkbGetKeyboard(info.info.x11.display,
 236                           XkbGBN_AllComponentsMask,
 237                           XkbUseCoreKbd);
 238     if (desc && desc->names) {
 239         keycodes = XGetAtomName(info.info.x11.display, desc->names->keycodes);
 240         if (keycodes == NULL) {
 241             fprintf(stderr, "could not lookup keycode name\n");
 242         } else if (strstart(keycodes, "evdev", NULL)) {
 243             has_evdev = 1;
 244         } else if (!strstart(keycodes, "xfree86", NULL)) {
 245             fprintf(stderr, "unknown keycodes `%s', please report to "
 246                     "qemu-devel@nongnu.org\n", keycodes);
 247         }
 248     }
 249
 250     if (desc) {
 251         XkbFreeKeyboard(desc, XkbGBN_AllComponentsMask, True);
 252     }
 253     if (keycodes) {
 254         XFree(keycodes);
 255     }
 256     return has_evdev;
 257 }
 258 #else
 259 static int check_for_evdev(void)
 260 {
 261         return 0;
 262 }
 263 #endif
 264
 265 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 266 {
 267     int keycode;
 268     static int has_evdev = -1;
 269
 270     if (has_evdev == -1)
 271         has_evdev = check_for_evdev();
 272
 273     keycode = ev->keysym.scancode;
 274
 275     if (keycode < 9) {
 276         keycode = 0;
 277     } else if (keycode < 97) {
 278         keycode -= 8; /* just an offset */
 279     } else if (keycode < 158) {
 280         /* use conversion table */
 281         if (has_evdev)
 282             keycode = translate_evdev_keycode(keycode - 97);
 283         else
 284             keycode = translate_xfree86_keycode(keycode - 97);
 285     } else if (keycode == 208) { /* Hiragana_Katakana */
 286         keycode = 0x70;
 287     } else if (keycode == 211) { /* backslash */
 288         keycode = 0x73;
 289     } else {
 290         keycode = 0;
 291     }
 292     return keycode;
 293 }
 294
 295 #endif
 296
 297 static void reset_keys(void)
 298 {
 299     int i;
 300     for(i = 0; i < 256; i++) {
 301         if (modifiers_state[i]) {
 302             qemu_input_event_send_key_number(dcl->con, i, false);
 303             modifiers_state[i] = 0;
 304         }
 305     }
 306 }
 307
 308 static void sdl_process_key(SDL_KeyboardEvent *ev)
 309 {
 310     int keycode;
 311
 312     if (ev->keysym.sym == SDLK_PAUSE) {
 313         /* specific case */
 314         qemu_input_event_send_key_qcode(dcl->con, Q_KEY_CODE_PAUSE,
 315                                         ev->type == SDL_KEYDOWN);
 316         return;
 317     }
 318
 319     if (kbd_layout) {
 320         keycode = sdl_keyevent_to_keycode_generic(ev);
 321     } else {
 322         keycode = sdl_keyevent_to_keycode(ev);
 323     }
 324
 325     switch(keycode) {
 326     case 0x00:
 327         /* sent when leaving window: reset the modifiers state */
 328         reset_keys();
 329         return;
 330     case 0x2a:                          /* Left Shift */
 331     case 0x36:                          /* Right Shift */
 332     case 0x1d:                          /* Left CTRL */
 333     case 0x9d:                          /* Right CTRL */
 334     case 0x38:                          /* Left ALT */
 335     case 0xb8:                         /* Right ALT */
 336         if (ev->type == SDL_KEYUP)
 337             modifiers_state[keycode] = 0;
 338         else
 339             modifiers_state[keycode] = 1;
 340         break;
 341 #define QEMU_SDL_VERSION ((SDL_MAJOR_VERSION << 8) + SDL_MINOR_VERSION)
 342 #if QEMU_SDL_VERSION < 0x102 || QEMU_SDL_VERSION == 0x102 && SDL_PATCHLEVEL < 14
 343         /* SDL versions before 1.2.14 don't support key up for caps/num lock. */
 344     case 0x45: /* num lock */
 345     case 0x3a: /* caps lock */
 346         /* SDL does not send the key up event, so we generate it */
 347         qemu_input_event_send_key_number(dcl->con, keycode, true);
 348         qemu_input_event_send_key_number(dcl->con, keycode, false);
 349         return;
 350 #endif
 351     }
 352
 353     /* now send the key code */
 354     qemu_input_event_send_key_number(dcl->con, keycode,
 355                                      ev->type == SDL_KEYDOWN);
 356 }
 357
 358 static void sdl_update_caption(void)
 359 {
 360     char win_title[1024];
 361     char icon_title[1024];
 362     const char *status = "";
 363
 364     if (!runstate_is_running())
 365         status = " [Stopped]";
 366     else if (gui_grab) {
 367         if (alt_grab)
 368             status = " - Press Ctrl-Alt-Shift to exit mouse grab";
 369         else if (ctrl_grab)
 370             status = " - Press Right-Ctrl to exit mouse grab";
 371         else
 372             status = " - Press Ctrl-Alt to exit mouse grab";
 373     }
 374
 375     if (qemu_name) {
 376         snprintf(win_title, sizeof(win_title), "QEMU (%s)%s", qemu_name, status);
 377         snprintf(icon_title, sizeof(icon_title), "QEMU (%s)", qemu_name);
 378     } else {
 379         snprintf(win_title, sizeof(win_title), "QEMU%s", status);
 380         snprintf(icon_title, sizeof(icon_title), "QEMU");
 381     }
 382
 383     SDL_WM_SetCaption(win_title, icon_title);
 384 }
 385
 386 static void sdl_hide_cursor(void)
 387 {
 388     if (!cursor_hide)
 389         return;
 390
 391     if (qemu_input_is_absolute()) {
 392         SDL_ShowCursor(1);
 393         SDL_SetCursor(sdl_cursor_hidden);
 394     } else {
 395         SDL_ShowCursor(0);
 396     }
 397 }
 398
 399 static void sdl_show_cursor(void)
 400 {
 401     if (!cursor_hide)
 402         return;
 403
 404     if (!qemu_input_is_absolute() || !qemu_console_is_graphic(NULL)) {
 405         SDL_ShowCursor(1);
 406         if (guest_cursor &&
 407                 (gui_grab || qemu_input_is_absolute() || absolute_enabled))
 408             SDL_SetCursor(guest_sprite);
 409         else
 410             SDL_SetCursor(sdl_cursor_normal);
 411     }
 412 }
 413
 414 static void sdl_grab_start(void)
 415 {
 416     /*
 417      * If the application is not active, do not try to enter grab state. This
 418      * prevents 'SDL_WM_GrabInput(SDL_GRAB_ON)' from blocking all the
 419      * application (SDL bug).
 420      */
 421     if (!(SDL_GetAppState() & SDL_APPINPUTFOCUS)) {
 422         return;
 423     }
 424     if (guest_cursor) {
 425         SDL_SetCursor(guest_sprite);
 426         if (!qemu_input_is_absolute() && !absolute_enabled) {
 427             SDL_WarpMouse(guest_x, guest_y);
 428         }
 429     } else
 430         sdl_hide_cursor();
 431     SDL_WM_GrabInput(SDL_GRAB_ON);
 432     gui_grab = 1;
 433     sdl_update_caption();
 434 }
 435
 436 static void sdl_grab_end(void)
 437 {
 438     SDL_WM_GrabInput(SDL_GRAB_OFF);
 439     gui_grab = 0;
 440     sdl_show_cursor();
 441     sdl_update_caption();
 442 }
 443
 444 static void absolute_mouse_grab(void)
 445 {
 446     int mouse_x, mouse_y;
 447
 448     SDL_GetMouseState(&mouse_x, &mouse_y);
 449     if (mouse_x > 0 && mouse_x < real_screen->w - 1 &&
 450         mouse_y > 0 && mouse_y < real_screen->h - 1) {
 451         sdl_grab_start();
 452     }
 453 }
 454
 455 static void sdl_mouse_mode_change(Notifier *notify, void *data)
 456 {
 457     if (qemu_input_is_absolute()) {
 458         if (!absolute_enabled) {
 459             absolute_enabled = 1;
 460             if (qemu_console_is_graphic(NULL)) {
 461                 absolute_mouse_grab();
 462             }
 463         }
 464     } else if (absolute_enabled) {
 465         if (!gui_fullscreen) {
 466             sdl_grab_end();
 467         }
 468         absolute_enabled = 0;
 469     }
 470 }
 471
 472 static void sdl_send_mouse_event(int dx, int dy, int x, int y, int state)
 473 {
 474     static uint32_t bmap[INPUT_BUTTON__MAX] = {
 475         [INPUT_BUTTON_LEFT]       = SDL_BUTTON(SDL_BUTTON_LEFT),
 476         [INPUT_BUTTON_MIDDLE]     = SDL_BUTTON(SDL_BUTTON_MIDDLE),
 477         [INPUT_BUTTON_RIGHT]      = SDL_BUTTON(SDL_BUTTON_RIGHT),
 478         [INPUT_BUTTON_WHEEL_UP]   = SDL_BUTTON(SDL_BUTTON_WHEELUP),
 479         [INPUT_BUTTON_WHEEL_DOWN] = SDL_BUTTON(SDL_BUTTON_WHEELDOWN),
 480     };
 481     static uint32_t prev_state;
 482
 483     if (prev_state != state) {
 484         qemu_input_update_buttons(dcl->con, bmap, prev_state, state);
 485         prev_state = state;
 486     }
 487
 488     if (qemu_input_is_absolute()) {
 489         qemu_input_queue_abs(dcl->con, INPUT_AXIS_X, x,
 490                              real_screen->w);
 491         qemu_input_queue_abs(dcl->con, INPUT_AXIS_Y, y,
 492                              real_screen->h);
 493     } else {
 494         if (guest_cursor) {
 495             x -= guest_x;
 496             y -= guest_y;
 497             guest_x += x;
 498             guest_y += y;
 499             dx = x;
 500             dy = y;
 501         }
 502         qemu_input_queue_rel(dcl->con, INPUT_AXIS_X, dx);
 503         qemu_input_queue_rel(dcl->con, INPUT_AXIS_Y, dy);
 504     }
 505     qemu_input_event_sync();
 506 }
 507
 508 static void sdl_scale(int width, int height)
 509 {
 510     int bpp = real_screen->format->BitsPerPixel;
 511
 512 #ifdef DEBUG_SDL
 513     printf("SDL: Scaling to %dx%d bpp %d\n", width, height, bpp);
 514 #endif
 515
 516     if (bpp != 16 && bpp != 32) {
 517         bpp = 32;
 518     }
 519     do_sdl_resize(width, height, bpp);
 520     scaling_active = 1;
 521 }
 522
 523 static void toggle_full_screen(void)
 524 {
 525     int width = surface_width(surface);
 526     int height = surface_height(surface);
 527     int bpp = surface_bits_per_pixel(surface);
 528
 529     gui_fullscreen = !gui_fullscreen;
 530     if (gui_fullscreen) {
 531         gui_saved_width = real_screen->w;
 532         gui_saved_height = real_screen->h;
 533         gui_saved_scaling = scaling_active;
 534
 535         do_sdl_resize(width, height, bpp);
 536         scaling_active = 0;
 537
 538         gui_saved_grab = gui_grab;
 539         sdl_grab_start();
 540     } else {
 541         if (gui_saved_scaling) {
 542             sdl_scale(gui_saved_width, gui_saved_height);
 543         } else {
 544             do_sdl_resize(width, height, 0);
 545         }
 546         if (!gui_saved_grab || !qemu_console_is_graphic(NULL)) {
 547             sdl_grab_end();
 548         }
 549     }
 550     graphic_hw_invalidate(NULL);
 551     graphic_hw_update(NULL);
 552 }
 553
 554 static void handle_keydown(SDL_Event *ev)
 555 {
 556     int mod_state;
 557     int keycode;
 558
 559     if (alt_grab) {
 560         mod_state = (SDL_GetModState() & (gui_grab_code | KMOD_LSHIFT)) ==
 561                     (gui_grab_code | KMOD_LSHIFT);
 562     } else if (ctrl_grab) {
 563         mod_state = (SDL_GetModState() & KMOD_RCTRL) == KMOD_RCTRL;
 564     } else {
 565         mod_state = (SDL_GetModState() & gui_grab_code) == gui_grab_code;
 566     }
 567     gui_key_modifier_pressed = mod_state;
 568
 569     if (gui_key_modifier_pressed) {
 570         keycode = sdl_keyevent_to_keycode(&ev->key);
 571         switch (keycode) {
 572         case 0x21: /* 'f' key on US keyboard */
 573             toggle_full_screen();
 574             gui_keysym = 1;
 575             break;
 576         case 0x16: /* 'u' key on US keyboard */
 577             if (scaling_active) {
 578                 scaling_active = 0;
 579                 sdl_switch(dcl, NULL);
 580                 graphic_hw_invalidate(NULL);
 581                 graphic_hw_update(NULL);
 582             }
 583             gui_keysym = 1;
 584             break;
 585         case 0x02 ... 0x0a: /* '1' to '9' keys */
 586             /* Reset the modifiers sent to the current console */
 587             reset_keys();
 588             console_select(keycode - 0x02);
 589             gui_keysym = 1;
 590             if (gui_fullscreen) {
 591                 break;
 592             }
 593             if (!qemu_console_is_graphic(NULL)) {
 594                 /* release grab if going to a text console */
 595                 if (gui_grab) {
 596                     sdl_grab_end();
 597                 } else if (absolute_enabled) {
 598                     sdl_show_cursor();
 599                 }
 600             } else if (absolute_enabled) {
 601                 sdl_hide_cursor();
 602                 absolute_mouse_grab();
 603             }
 604             break;
 605         case 0x1b: /* '+' */
 606         case 0x35: /* '-' */
 607             if (!gui_fullscreen) {
 608                 int width = MAX(real_screen->w + (keycode == 0x1b ? 50 : -50),
 609                                 160);
 610                 int height = (surface_height(surface) * width) /
 611                     surface_width(surface);
 612
 613                 sdl_scale(width, height);
 614                 graphic_hw_invalidate(NULL);
 615                 graphic_hw_update(NULL);
 616                 gui_keysym = 1;
 617             }
 618         default:
 619             break;
 620         }
 621     } else if (!qemu_console_is_graphic(NULL)) {
 622         int keysym = 0;
 623
 624         if (ev->key.keysym.mod & (KMOD_LCTRL | KMOD_RCTRL)) {
 625             switch (ev->key.keysym.sym) {
 626             case SDLK_UP:
 627                 keysym = QEMU_KEY_CTRL_UP;
 628                 break;
 629             case SDLK_DOWN:
 630                 keysym = QEMU_KEY_CTRL_DOWN;
 631                 break;
 632             case SDLK_LEFT:
 633                 keysym = QEMU_KEY_CTRL_LEFT;
 634                 break;
 635             case SDLK_RIGHT:
 636                 keysym = QEMU_KEY_CTRL_RIGHT;
 637                 break;
 638             case SDLK_HOME:
 639                 keysym = QEMU_KEY_CTRL_HOME;
 640                 break;
 641             case SDLK_END:
 642                 keysym = QEMU_KEY_CTRL_END;
 643                 break;
 644             case SDLK_PAGEUP:
 645                 keysym = QEMU_KEY_CTRL_PAGEUP;
 646                 break;
 647             case SDLK_PAGEDOWN:
 648                 keysym = QEMU_KEY_CTRL_PAGEDOWN;
 649                 break;
 650             default:
 651                 break;
 652             }
 653         } else {
 654             switch (ev->key.keysym.sym) {
 655             case SDLK_UP:
 656                 keysym = QEMU_KEY_UP;
 657                 break;
 658             case SDLK_DOWN:
 659                 keysym = QEMU_KEY_DOWN;
 660                 break;
 661             case SDLK_LEFT:
 662                 keysym = QEMU_KEY_LEFT;
 663                 break;
 664             case SDLK_RIGHT:
 665                 keysym = QEMU_KEY_RIGHT;
 666                 break;
 667             case SDLK_HOME:
 668                 keysym = QEMU_KEY_HOME;
 669                 break;
 670             case SDLK_END:
 671                 keysym = QEMU_KEY_END;
 672                 break;
 673             case SDLK_PAGEUP:
 674                 keysym = QEMU_KEY_PAGEUP;
 675                 break;
 676             case SDLK_PAGEDOWN:
 677                 keysym = QEMU_KEY_PAGEDOWN;
 678                 break;
 679             case SDLK_BACKSPACE:
 680                 keysym = QEMU_KEY_BACKSPACE;
 681                 break;
 682             case SDLK_DELETE:
 683                 keysym = QEMU_KEY_DELETE;
 684                 break;
 685             default:
 686                 break;
 687             }
 688         }
 689         if (keysym) {
 690             kbd_put_keysym(keysym);
 691         } else if (ev->key.keysym.unicode != 0) {
 692             kbd_put_keysym(ev->key.keysym.unicode);
 693         }
 694     }
 695     if (qemu_console_is_graphic(NULL) && !gui_keysym) {
 696         sdl_process_key(&ev->key);
 697     }
 698 }
 699
 700 static void handle_keyup(SDL_Event *ev)
 701 {
 702     int mod_state;
 703
 704     if (!alt_grab) {
 705         mod_state = (ev->key.keysym.mod & gui_grab_code);
 706     } else {
 707         mod_state = (ev->key.keysym.mod & (gui_grab_code | KMOD_LSHIFT));
 708     }
 709     if (!mod_state && gui_key_modifier_pressed) {
 710         gui_key_modifier_pressed = 0;
 711         if (gui_keysym == 0) {
 712             /* exit/enter grab if pressing Ctrl-Alt */
 713             if (!gui_grab) {
 714                 if (qemu_console_is_graphic(NULL)) {
 715                     sdl_grab_start();
 716                 }
 717             } else if (!gui_fullscreen) {
 718                 sdl_grab_end();
 719             }
 720             /* SDL does not send back all the modifiers key, so we must
 721              * correct it. */
 722             reset_keys();
 723             return;
 724         }
 725         gui_keysym = 0;
 726     }
 727     if (qemu_console_is_graphic(NULL) && !gui_keysym) {
 728         sdl_process_key(&ev->key);
 729     }
 730 }
 731
 732 static void handle_mousemotion(SDL_Event *ev)
 733 {
 734     int max_x, max_y;
 735
 736     if (qemu_console_is_graphic(NULL) &&
 737         (qemu_input_is_absolute() || absolute_enabled)) {
 738         max_x = real_screen->w - 1;
 739         max_y = real_screen->h - 1;
 740         if (gui_grab && (ev->motion.x == 0 || ev->motion.y == 0 ||
 741             ev->motion.x == max_x || ev->motion.y == max_y)) {
 742             sdl_grab_end();
 743         }
 744         if (!gui_grab &&
 745             (ev->motion.x > 0 && ev->motion.x < max_x &&
 746             ev->motion.y > 0 && ev->motion.y < max_y)) {
 747             sdl_grab_start();
 748         }
 749     }
 750     if (gui_grab || qemu_input_is_absolute() || absolute_enabled) {
 751         sdl_send_mouse_event(ev->motion.xrel, ev->motion.yrel,
 752                              ev->motion.x, ev->motion.y, ev->motion.state);
 753     }
 754 }
 755
 756 static void handle_mousebutton(SDL_Event *ev)
 757 {
 758     int buttonstate = SDL_GetMouseState(NULL, NULL);
 759     SDL_MouseButtonEvent *bev;
 760
 761     if (!qemu_console_is_graphic(NULL)) {
 762         return;
 763     }
 764
 765     bev = &ev->button;
 766     if (!gui_grab && !qemu_input_is_absolute()) {
 767         if (ev->type == SDL_MOUSEBUTTONUP && bev->button == SDL_BUTTON_LEFT) {
 768             /* start grabbing all events */
 769             sdl_grab_start();
 770         }
 771     } else {
 772         if (ev->type == SDL_MOUSEBUTTONDOWN) {
 773             buttonstate |= SDL_BUTTON(bev->button);
 774         } else {
 775             buttonstate &= ~SDL_BUTTON(bev->button);
 776         }
 777         sdl_send_mouse_event(0, 0, bev->x, bev->y, buttonstate);
 778     }
 779 }
 780
 781 static void handle_activation(SDL_Event *ev)
 782 {
 783 #ifdef _WIN32
 784     /* Disable grab if the window no longer has the focus
 785      * (Windows-only workaround) */
 786     if (gui_grab && ev->active.state == SDL_APPINPUTFOCUS &&
 787         !ev->active.gain && !gui_fullscreen) {
 788         sdl_grab_end();
 789     }
 790 #endif
 791     if (!gui_grab && ev->active.gain && qemu_console_is_graphic(NULL) &&
 792         (qemu_input_is_absolute() || absolute_enabled)) {
 793         absolute_mouse_grab();
 794     }
 795     if (ev->active.state & SDL_APPACTIVE) {
 796         if (ev->active.gain) {
 797             /* Back to default interval */
 798             update_displaychangelistener(dcl, GUI_REFRESH_INTERVAL_DEFAULT);
 799         } else {
 800             /* Sleeping interval.  Not using the long default here as
 801              * sdl_refresh does not only update the guest screen, but
 802              * also checks for gui events. */
 803             update_displaychangelistener(dcl, 500);
 804         }
 805     }
 806 }
 807
 808 static void sdl_refresh(DisplayChangeListener *dcl)
 809 {
 810     SDL_Event ev1, *ev = &ev1;
 811     int idle = 1;
 812
 813     if (last_vm_running != runstate_is_running()) {
 814         last_vm_running = runstate_is_running();
 815         sdl_update_caption();
 816     }
 817
 818     graphic_hw_update(NULL);
 819     SDL_EnableUNICODE(!qemu_console_is_graphic(NULL));
 820
 821     while (SDL_PollEvent(ev)) {
 822         switch (ev->type) {
 823         case SDL_VIDEOEXPOSE:
 824             sdl_update(dcl, 0, 0, real_screen->w, real_screen->h);
 825             break;
 826         case SDL_KEYDOWN:
 827             idle = 0;
 828             handle_keydown(ev);
 829             break;
 830         case SDL_KEYUP:
 831             idle = 0;
 832             handle_keyup(ev);
 833             break;
 834         case SDL_QUIT:
 835             if (!no_quit) {
 836                 no_shutdown = 0;
 837                 qemu_system_shutdown_request();
 838             }
 839             break;
 840         case SDL_MOUSEMOTION:
 841             idle = 0;
 842             handle_mousemotion(ev);
 843             break;
 844         case SDL_MOUSEBUTTONDOWN:
 845         case SDL_MOUSEBUTTONUP:
 846             idle = 0;
 847             handle_mousebutton(ev);
 848             break;
 849         case SDL_ACTIVEEVENT:
 850             handle_activation(ev);
 851             break;
 852         case SDL_VIDEORESIZE:
 853             sdl_scale(ev->resize.w, ev->resize.h);
 854             graphic_hw_invalidate(NULL);
 855             graphic_hw_update(NULL);
 856             break;
 857         default:
 858             break;
 859         }
 860     }
 861
 862     if (idle) {
 863         if (idle_counter < SDL_MAX_IDLE_COUNT) {
 864             idle_counter++;
 865             if (idle_counter >= SDL_MAX_IDLE_COUNT) {
 866                 dcl->update_interval = GUI_REFRESH_INTERVAL_DEFAULT;
 867             }
 868         }
 869     } else {
 870         idle_counter = 0;
 871         dcl->update_interval = SDL_REFRESH_INTERVAL_BUSY;
 872     }
 873 }
 874
 875 static void sdl_mouse_warp(DisplayChangeListener *dcl,
 876                            int x, int y, int on)
 877 {
 878     if (on) {
 879         if (!guest_cursor)
 880             sdl_show_cursor();
 881         if (gui_grab || qemu_input_is_absolute() || absolute_enabled) {
 882             SDL_SetCursor(guest_sprite);
 883             if (!qemu_input_is_absolute() && !absolute_enabled) {
 884                 SDL_WarpMouse(x, y);
 885             }
 886         }
 887     } else if (gui_grab)
 888         sdl_hide_cursor();
 889     guest_cursor = on;
 890     guest_x = x, guest_y = y;
 891 }
 892
 893 static void sdl_mouse_define(DisplayChangeListener *dcl,
 894                              QEMUCursor *c)
 895 {
 896     uint8_t *image, *mask;
 897     int bpl;
 898
 899     if (guest_sprite)
 900         SDL_FreeCursor(guest_sprite);
 901
 902     bpl = cursor_get_mono_bpl(c);
 903     image = g_malloc0(bpl * c->height);
 904     mask  = g_malloc0(bpl * c->height);
 905     cursor_get_mono_image(c, 0x000000, image);
 906     cursor_get_mono_mask(c, 0, mask);
 907     guest_sprite = SDL_CreateCursor(image, mask, c->width, c->height,
 908                                     c->hot_x, c->hot_y);
 909     g_free(image);
 910     g_free(mask);
 911
 912     if (guest_cursor &&
 913             (gui_grab || qemu_input_is_absolute() || absolute_enabled))
 914         SDL_SetCursor(guest_sprite);
 915 }
 916
 917 static void sdl_cleanup(void)
 918 {
 919     if (guest_sprite)
 920         SDL_FreeCursor(guest_sprite);
 921     SDL_QuitSubSystem(SDL_INIT_VIDEO);
 922 }
 923
 924 static const DisplayChangeListenerOps dcl_ops = {
 925     .dpy_name             = "sdl",
 926     .dpy_gfx_update       = sdl_update,
 927     .dpy_gfx_switch       = sdl_switch,
 928     .dpy_gfx_check_format = sdl_check_format,
 929     .dpy_refresh          = sdl_refresh,
 930     .dpy_mouse_set        = sdl_mouse_warp,
 931     .dpy_cursor_define    = sdl_mouse_define,
 932 };
 933
 934 void sdl_display_early_init(int opengl)
 935 {
 936     if (opengl == 1 /* on */) {
 937         fprintf(stderr,
 938                 "SDL1 display code has no opengl support.\n"
 939                 "Please recompile qemu with SDL2, using\n"
 940                 "./configure --enable-sdl --with-sdlabi=2.0\n");
 941     }
 942 }
 943
 944 void sdl_display_init(DisplayState *ds, int full_screen, int no_frame)
 945 {
 946     int flags;
 947     uint8_t data = 0;
 948     const SDL_VideoInfo *vi;
 949     char *filename;
 950
 951 #if defined(__APPLE__)
 952     /* always use generic keymaps */
 953     if (!keyboard_layout)
 954         keyboard_layout = "en-us";
 955 #endif
 956     if(keyboard_layout) {
 957         kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
 958         if (!kbd_layout)
 959             exit(1);
 960     }
 961
 962     if (no_frame)
 963         gui_noframe = 1;
 964
 965     if (!full_screen) {
 966         setenv("SDL_VIDEO_ALLOW_SCREENSAVER", "1", 0);
 967     }
 968 #ifdef __linux__
 969     /* on Linux, SDL may use fbcon|directfb|svgalib when run without
 970      * accessible $DISPLAY to open X11 window.  This is often the case
 971      * when qemu is run using sudo.  But in this case, and when actually
 972      * run in X11 environment, SDL fights with X11 for the video card,
 973      * making current display unavailable, often until reboot.
 974      * So make x11 the default SDL video driver if this variable is unset.
 975      * This is a bit hackish but saves us from bigger problem.
 976      * Maybe it's a good idea to fix this in SDL instead.
 977      */
 978     setenv("SDL_VIDEODRIVER", "x11", 0);
 979 #endif
 980
 981     /* Enable normal up/down events for Caps-Lock and Num-Lock keys.
 982      * This requires SDL >= 1.2.14. */
 983     setenv("SDL_DISABLE_LOCK_KEYS", "1", 1);
 984
 985     flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
 986     if (SDL_Init (flags)) {
 987         fprintf(stderr, "Could not initialize SDL(%s) - exiting\n",
 988                 SDL_GetError());
 989         exit(1);
 990     }
 991     vi = SDL_GetVideoInfo();
 992     host_format = *(vi->vfmt);
 993
 994     /* Load a 32x32x4 image. White pixels are transparent. */
 995     filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, "qemu-icon.bmp");
 996     if (filename) {
 997         SDL_Surface *image = SDL_LoadBMP(filename);
 998         if (image) {
 999             uint32_t colorkey = SDL_MapRGB(image->format, 255, 255, 255);
1000             SDL_SetColorKey(image, SDL_SRCCOLORKEY, colorkey);
1001             SDL_WM_SetIcon(image, NULL);
1002         }
1003         g_free(filename);
1004     }
1005
1006     if (full_screen) {
1007         gui_fullscreen = 1;
1008         sdl_grab_start();
1009     }
1010
1011     dcl = g_new0(DisplayChangeListener, 1);
1012     dcl->ops = &dcl_ops;
1013     register_displaychangelistener(dcl);
1014
1015     mouse_mode_notifier.notify = sdl_mouse_mode_change;
1016     qemu_add_mouse_mode_change_notifier(&mouse_mode_notifier);
1017
1018     sdl_update_caption();
1019     SDL_EnableKeyRepeat(250, 50);
1020     gui_grab = 0;
1021
1022     sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
1023     sdl_cursor_normal = SDL_GetCursor();
1024
1025     atexit(sdl_cleanup);
1026 }