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 "qemu/cutils.h"
  34 #include "ui/console.h"
  35 #include "ui/input.h"
  36 #include "sysemu/sysemu.h"
  37 #include "x_keymap.h"
  38 #include "sdl_zoom.h"
  39
  40 static DisplayChangeListener *dcl;
  41 static DisplaySurface *surface;
  42 static SDL_Surface *real_screen;
  43 static SDL_Surface *guest_screen = NULL;
  44 static int gui_grab; /* if true, all keyboard/mouse events are grabbed */
  45 static int last_vm_running;
  46 static bool gui_saved_scaling;
  47 static int gui_saved_width;
  48 static int gui_saved_height;
  49 static int gui_saved_grab;
  50 static int gui_fullscreen;
  51 static int gui_noframe;
  52 static int gui_key_modifier_pressed;
  53 static int gui_keysym;
  54 static int gui_grab_code = KMOD_LALT | KMOD_LCTRL;
  55 static uint8_t modifiers_state[256];
  56 static SDL_Cursor *sdl_cursor_normal;
  57 static SDL_Cursor *sdl_cursor_hidden;
  58 static int absolute_enabled = 0;
  59 static int guest_cursor = 0;
  60 static int guest_x, guest_y;
  61 static SDL_Cursor *guest_sprite = NULL;
  62 static SDL_PixelFormat host_format;
  63 static int scaling_active = 0;
  64 static Notifier mouse_mode_notifier;
  65 static int idle_counter;
  66
  67 #define SDL_REFRESH_INTERVAL_BUSY 10
  68 #define SDL_MAX_IDLE_COUNT (2 * GUI_REFRESH_INTERVAL_DEFAULT \
  69                             / SDL_REFRESH_INTERVAL_BUSY + 1)
  70
  71 #if 0
  72 #define DEBUG_SDL
  73 #endif
  74
  75 static void sdl_update(DisplayChangeListener *dcl,
  76                        int x, int y, int w, int h)
  77 {
  78     SDL_Rect rec;
  79     rec.x = x;
  80     rec.y = y;
  81     rec.w = w;
  82     rec.h = h;
  83
  84 #ifdef DEBUG_SDL
  85     printf("SDL: Updating x=%d y=%d w=%d h=%d (scaling: %d)\n",
  86            x, y, w, h, scaling_active);
  87 #endif
  88
  89     if (guest_screen) {
  90         if (!scaling_active) {
  91             SDL_BlitSurface(guest_screen, &rec, real_screen, &rec);
  92         } else {
  93             if (sdl_zoom_blit(guest_screen, real_screen, SMOOTHING_ON, &rec) < 0) {
  94                 fprintf(stderr, "Zoom blit failed\n");
  95                 exit(1);
  96             }
  97         }
  98     }
  99     SDL_UpdateRect(real_screen, rec.x, rec.y, rec.w, rec.h);
 100 }
 101
 102 static void do_sdl_resize(int width, int height, int bpp)
 103 {
 104     int flags;
 105     SDL_Surface *tmp_screen;
 106
 107 #ifdef DEBUG_SDL
 108     printf("SDL: Resizing to %dx%d bpp %d\n", width, height, bpp);
 109 #endif
 110
 111     flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
 112     if (gui_fullscreen) {
 113         flags |= SDL_FULLSCREEN;
 114     } else {
 115         flags |= SDL_RESIZABLE;
 116     }
 117     if (gui_noframe)
 118         flags |= SDL_NOFRAME;
 119
 120     tmp_screen = SDL_SetVideoMode(width, height, bpp, flags);
 121     if (!real_screen) {
 122         if (!tmp_screen) {
 123             fprintf(stderr, "Could not open SDL display (%dx%dx%d): %s\n",
 124                     width, height, bpp, SDL_GetError());
 125             exit(1);
 126         }
 127     } else {
 128         /*
 129          * Revert to the previous video mode if the change of resizing or
 130          * resolution failed.
 131          */
 132         if (!tmp_screen) {
 133             fprintf(stderr, "Failed to set SDL display (%dx%dx%d): %s\n",
 134                     width, height, bpp, SDL_GetError());
 135             return;
 136         }
 137     }
 138
 139     real_screen = tmp_screen;
 140 }
 141
 142 static void sdl_switch(DisplayChangeListener *dcl,
 143                        DisplaySurface *new_surface)
 144 {
 145     PixelFormat pf;
 146
 147     /* temporary hack: allows to call sdl_switch to handle scaling changes */
 148     if (new_surface) {
 149         surface = new_surface;
 150     }
 151     pf = qemu_pixelformat_from_pixman(surface->format);
 152
 153     if (!scaling_active) {
 154         do_sdl_resize(surface_width(surface), surface_height(surface), 0);
 155     } else if (real_screen->format->BitsPerPixel !=
 156                surface_bits_per_pixel(surface)) {
 157         do_sdl_resize(real_screen->w, real_screen->h,
 158                       surface_bits_per_pixel(surface));
 159     }
 160
 161     if (guest_screen != NULL) {
 162         SDL_FreeSurface(guest_screen);
 163     }
 164
 165 #ifdef DEBUG_SDL
 166     printf("SDL: Creating surface with masks: %08x %08x %08x %08x\n",
 167            pf.rmask, pf.gmask, pf.bmask, pf.amask);
 168 #endif
 169
 170     guest_screen = SDL_CreateRGBSurfaceFrom
 171         (surface_data(surface),
 172          surface_width(surface), surface_height(surface),
 173          surface_bits_per_pixel(surface), surface_stride(surface),
 174          pf.rmask, pf.gmask,
 175          pf.bmask, pf.amask);
 176 }
 177
 178 static bool sdl_check_format(DisplayChangeListener *dcl,
 179                              pixman_format_code_t format)
 180 {
 181     /*
 182      * We let SDL convert for us a few more formats than,
 183      * the native ones. Thes are the ones I have tested.
 184      */
 185     return (format == PIXMAN_x8r8g8b8 ||
 186             format == PIXMAN_b8g8r8x8 ||
 187             format == PIXMAN_x1r5g5b5 ||
 188             format == PIXMAN_r5g6b5);
 189 }
 190
 191 /* generic keyboard conversion */
 192
 193 #include "sdl_keysym.h"
 194
 195 static kbd_layout_t *kbd_layout = NULL;
 196
 197 static uint8_t sdl_keyevent_to_keycode_generic(const SDL_KeyboardEvent *ev)
 198 {
 199     int keysym;
 200     /* workaround for X11+SDL bug with AltGR */
 201     keysym = ev->keysym.sym;
 202     if (keysym == 0 && ev->keysym.scancode == 113)
 203         keysym = SDLK_MODE;
 204     /* For Japanese key '\' and '|' */
 205     if (keysym == 92 && ev->keysym.scancode == 133) {
 206         keysym = 0xa5;
 207     }
 208     return keysym2scancode(kbd_layout, keysym) & SCANCODE_KEYMASK;
 209 }
 210
 211 /* specific keyboard conversions from scan codes */
 212
 213 #if defined(_WIN32)
 214
 215 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 216 {
 217     return ev->keysym.scancode;
 218 }
 219
 220 #else
 221
 222 #if defined(SDL_VIDEO_DRIVER_X11)
 223 #include <X11/XKBlib.h>
 224
 225 static int check_for_evdev(void)
 226 {
 227     SDL_SysWMinfo info;
 228     XkbDescPtr desc = NULL;
 229     int has_evdev = 0;
 230     char *keycodes = NULL;
 231
 232     SDL_VERSION(&info.version);
 233     if (!SDL_GetWMInfo(&info)) {
 234         return 0;
 235     }
 236     desc = XkbGetMap(info.info.x11.display,
 237                      XkbGBN_AllComponentsMask,
 238                      XkbUseCoreKbd);
 239     if (desc &&
 240         (XkbGetNames(info.info.x11.display,
 241                      XkbKeycodesNameMask, desc) == Success)) {
 242         keycodes = XGetAtomName(info.info.x11.display, desc->names->keycodes);
 243         if (keycodes == NULL) {
 244             fprintf(stderr, "could not lookup keycode name\n");
 245         } else if (strstart(keycodes, "evdev", NULL)) {
 246             has_evdev = 1;
 247         } else if (!strstart(keycodes, "xfree86", NULL)) {
 248             fprintf(stderr, "unknown keycodes `%s', please report to "
 249                     "qemu-devel@nongnu.org\n", keycodes);
 250         }
 251     }
 252
 253     if (desc) {
 254         XkbFreeKeyboard(desc, XkbGBN_AllComponentsMask, True);
 255     }
 256     if (keycodes) {
 257         XFree(keycodes);
 258     }
 259     return has_evdev;
 260 }
 261 #else
 262 static int check_for_evdev(void)
 263 {
 264         return 0;
 265 }
 266 #endif
 267
 268 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 269 {
 270     int keycode;
 271     static int has_evdev = -1;
 272
 273     if (has_evdev == -1)
 274         has_evdev = check_for_evdev();
 275
 276     keycode = ev->keysym.scancode;
 277
 278     if (keycode < 9) {
 279         keycode = 0;
 280     } else if (keycode < 97) {
 281         keycode -= 8; /* just an offset */
 282     } else if (keycode < 158) {
 283         /* use conversion table */
 284         if (has_evdev)
 285             keycode = translate_evdev_keycode(keycode - 97);
 286         else
 287             keycode = translate_xfree86_keycode(keycode - 97);
 288     } else if (keycode == 208) { /* Hiragana_Katakana */
 289         keycode = 0x70;
 290     } else if (keycode == 211) { /* backslash */
 291         keycode = 0x73;
 292     } else {
 293         keycode = 0;
 294     }
 295     return keycode;
 296 }
 297
 298 #endif
 299
 300 static void reset_keys(void)
 301 {
 302     int i;
 303     for(i = 0; i < 256; i++) {
 304         if (modifiers_state[i]) {
 305             qemu_input_event_send_key_number(dcl->con, i, false);
 306             modifiers_state[i] = 0;
 307         }
 308     }
 309 }
 310
 311 static void sdl_process_key(SDL_KeyboardEvent *ev)
 312 {
 313     int keycode;
 314
 315     if (ev->keysym.sym == SDLK_PAUSE) {
 316         /* specific case */
 317         qemu_input_event_send_key_qcode(dcl->con, Q_KEY_CODE_PAUSE,
 318                                         ev->type == SDL_KEYDOWN);
 319         return;
 320     }
 321
 322     if (kbd_layout) {
 323         keycode = sdl_keyevent_to_keycode_generic(ev);
 324     } else {
 325         keycode = sdl_keyevent_to_keycode(ev);
 326     }
 327
 328     switch(keycode) {
 329     case 0x00:
 330         /* sent when leaving window: reset the modifiers state */
 331         reset_keys();
 332         return;
 333     case 0x2a:                          /* Left Shift */
 334     case 0x36:                          /* Right Shift */
 335     case 0x1d:                          /* Left CTRL */
 336     case 0x9d:                          /* Right CTRL */
 337     case 0x38:                          /* Left ALT */
 338     case 0xb8:                         /* Right ALT */
 339         if (ev->type == SDL_KEYUP)
 340             modifiers_state[keycode] = 0;
 341         else
 342             modifiers_state[keycode] = 1;
 343         break;
 344 #define QEMU_SDL_VERSION ((SDL_MAJOR_VERSION << 8) + SDL_MINOR_VERSION)
 345 #if QEMU_SDL_VERSION < 0x102 || QEMU_SDL_VERSION == 0x102 && SDL_PATCHLEVEL < 14
 346         /* SDL versions before 1.2.14 don't support key up for caps/num lock. */
 347     case 0x45: /* num lock */
 348     case 0x3a: /* caps lock */
 349         /* SDL does not send the key up event, so we generate it */
 350         qemu_input_event_send_key_number(dcl->con, keycode, true);
 351         qemu_input_event_send_key_number(dcl->con, keycode, false);
 352         return;
 353 #endif
 354     }
 355
 356     /* now send the key code */
 357     qemu_input_event_send_key_number(dcl->con, keycode,
 358                                      ev->type == SDL_KEYDOWN);
 359 }
 360
 361 static void sdl_update_caption(void)
 362 {
 363     char win_title[1024];
 364     char icon_title[1024];
 365     const char *status = "";
 366
 367     if (!runstate_is_running())
 368         status = " [Stopped]";
 369     else if (gui_grab) {
 370         if (alt_grab)
 371             status = " - Press Ctrl-Alt-Shift to exit mouse grab";
 372         else if (ctrl_grab)
 373             status = " - Press Right-Ctrl to exit mouse grab";
 374         else
 375             status = " - Press Ctrl-Alt to exit mouse grab";
 376     }
 377
 378     if (qemu_name) {
 379         snprintf(win_title, sizeof(win_title), "QEMU (%s)%s", qemu_name, status);
 380         snprintf(icon_title, sizeof(icon_title), "QEMU (%s)", qemu_name);
 381     } else {
 382         snprintf(win_title, sizeof(win_title), "QEMU%s", status);
 383         snprintf(icon_title, sizeof(icon_title), "QEMU");
 384     }
 385
 386     SDL_WM_SetCaption(win_title, icon_title);
 387 }
 388
 389 static void sdl_hide_cursor(void)
 390 {
 391     if (!cursor_hide)
 392         return;
 393
 394     if (qemu_input_is_absolute()) {
 395         SDL_ShowCursor(1);
 396         SDL_SetCursor(sdl_cursor_hidden);
 397     } else {
 398         SDL_ShowCursor(0);
 399     }
 400 }
 401
 402 static void sdl_show_cursor(void)
 403 {
 404     if (!cursor_hide)
 405         return;
 406
 407     if (!qemu_input_is_absolute() || !qemu_console_is_graphic(NULL)) {
 408         SDL_ShowCursor(1);
 409         if (guest_cursor &&
 410                 (gui_grab || qemu_input_is_absolute() || absolute_enabled))
 411             SDL_SetCursor(guest_sprite);
 412         else
 413             SDL_SetCursor(sdl_cursor_normal);
 414     }
 415 }
 416
 417 static void sdl_grab_start(void)
 418 {
 419     /*
 420      * If the application is not active, do not try to enter grab state. This
 421      * prevents 'SDL_WM_GrabInput(SDL_GRAB_ON)' from blocking all the
 422      * application (SDL bug).
 423      */
 424     if (!(SDL_GetAppState() & SDL_APPINPUTFOCUS)) {
 425         return;
 426     }
 427     if (guest_cursor) {
 428         SDL_SetCursor(guest_sprite);
 429         if (!qemu_input_is_absolute() && !absolute_enabled) {
 430             SDL_WarpMouse(guest_x, guest_y);
 431         }
 432     } else
 433         sdl_hide_cursor();
 434     SDL_WM_GrabInput(SDL_GRAB_ON);
 435     gui_grab = 1;
 436     sdl_update_caption();
 437 }
 438
 439 static void sdl_grab_end(void)
 440 {
 441     SDL_WM_GrabInput(SDL_GRAB_OFF);
 442     gui_grab = 0;
 443     sdl_show_cursor();
 444     sdl_update_caption();
 445 }
 446
 447 static void absolute_mouse_grab(void)
 448 {
 449     int mouse_x, mouse_y;
 450
 451     SDL_GetMouseState(&mouse_x, &mouse_y);
 452     if (mouse_x > 0 && mouse_x < real_screen->w - 1 &&
 453         mouse_y > 0 && mouse_y < real_screen->h - 1) {
 454         sdl_grab_start();
 455     }
 456 }
 457
 458 static void sdl_mouse_mode_change(Notifier *notify, void *data)
 459 {
 460     if (qemu_input_is_absolute()) {
 461         if (!absolute_enabled) {
 462             absolute_enabled = 1;
 463             if (qemu_console_is_graphic(NULL)) {
 464                 absolute_mouse_grab();
 465             }
 466         }
 467     } else if (absolute_enabled) {
 468         if (!gui_fullscreen) {
 469             sdl_grab_end();
 470         }
 471         absolute_enabled = 0;
 472     }
 473 }
 474
 475 static void sdl_send_mouse_event(int dx, int dy, int x, int y, int state)
 476 {
 477     static uint32_t bmap[INPUT_BUTTON__MAX] = {
 478         [INPUT_BUTTON_LEFT]       = SDL_BUTTON(SDL_BUTTON_LEFT),
 479         [INPUT_BUTTON_MIDDLE]     = SDL_BUTTON(SDL_BUTTON_MIDDLE),
 480         [INPUT_BUTTON_RIGHT]      = SDL_BUTTON(SDL_BUTTON_RIGHT),
 481         [INPUT_BUTTON_WHEEL_UP]   = SDL_BUTTON(SDL_BUTTON_WHEELUP),
 482         [INPUT_BUTTON_WHEEL_DOWN] = SDL_BUTTON(SDL_BUTTON_WHEELDOWN),
 483     };
 484     static uint32_t prev_state;
 485
 486     if (prev_state != state) {
 487         qemu_input_update_buttons(dcl->con, bmap, prev_state, state);
 488         prev_state = state;
 489     }
 490
 491     if (qemu_input_is_absolute()) {
 492         qemu_input_queue_abs(dcl->con, INPUT_AXIS_X, x,
 493                              real_screen->w);
 494         qemu_input_queue_abs(dcl->con, INPUT_AXIS_Y, y,
 495                              real_screen->h);
 496     } else {
 497         if (guest_cursor) {
 498             x -= guest_x;
 499             y -= guest_y;
 500             guest_x += x;
 501             guest_y += y;
 502             dx = x;
 503             dy = y;
 504         }
 505         qemu_input_queue_rel(dcl->con, INPUT_AXIS_X, dx);
 506         qemu_input_queue_rel(dcl->con, INPUT_AXIS_Y, dy);
 507     }
 508     qemu_input_event_sync();
 509 }
 510
 511 static void sdl_scale(int width, int height)
 512 {
 513     int bpp = real_screen->format->BitsPerPixel;
 514
 515 #ifdef DEBUG_SDL
 516     printf("SDL: Scaling to %dx%d bpp %d\n", width, height, bpp);
 517 #endif
 518
 519     if (bpp != 16 && bpp != 32) {
 520         bpp = 32;
 521     }
 522     do_sdl_resize(width, height, bpp);
 523     scaling_active = 1;
 524 }
 525
 526 static void toggle_full_screen(void)
 527 {
 528     int width = surface_width(surface);
 529     int height = surface_height(surface);
 530     int bpp = surface_bits_per_pixel(surface);
 531
 532     gui_fullscreen = !gui_fullscreen;
 533     if (gui_fullscreen) {
 534         gui_saved_width = real_screen->w;
 535         gui_saved_height = real_screen->h;
 536         gui_saved_scaling = scaling_active;
 537
 538         do_sdl_resize(width, height, bpp);
 539         scaling_active = 0;
 540
 541         gui_saved_grab = gui_grab;
 542         sdl_grab_start();
 543     } else {
 544         if (gui_saved_scaling) {
 545             sdl_scale(gui_saved_width, gui_saved_height);
 546         } else {
 547             do_sdl_resize(width, height, 0);
 548         }
 549         if (!gui_saved_grab || !qemu_console_is_graphic(NULL)) {
 550             sdl_grab_end();
 551         }
 552     }
 553     graphic_hw_invalidate(NULL);
 554     graphic_hw_update(NULL);
 555 }
 556
 557 static void handle_keydown(SDL_Event *ev)
 558 {
 559     int mod_state;
 560     int keycode;
 561
 562     if (alt_grab) {
 563         mod_state = (SDL_GetModState() & (gui_grab_code | KMOD_LSHIFT)) ==
 564                     (gui_grab_code | KMOD_LSHIFT);
 565     } else if (ctrl_grab) {
 566         mod_state = (SDL_GetModState() & KMOD_RCTRL) == KMOD_RCTRL;
 567     } else {
 568         mod_state = (SDL_GetModState() & gui_grab_code) == gui_grab_code;
 569     }
 570     gui_key_modifier_pressed = mod_state;
 571
 572     if (gui_key_modifier_pressed) {
 573         keycode = sdl_keyevent_to_keycode(&ev->key);
 574         switch (keycode) {
 575         case 0x21: /* 'f' key on US keyboard */
 576             toggle_full_screen();
 577             gui_keysym = 1;
 578             break;
 579         case 0x16: /* 'u' key on US keyboard */
 580             if (scaling_active) {
 581                 scaling_active = 0;
 582                 sdl_switch(dcl, NULL);
 583                 graphic_hw_invalidate(NULL);
 584                 graphic_hw_update(NULL);
 585             }
 586             gui_keysym = 1;
 587             break;
 588         case 0x02 ... 0x0a: /* '1' to '9' keys */
 589             /* Reset the modifiers sent to the current console */
 590             reset_keys();
 591             console_select(keycode - 0x02);
 592             gui_keysym = 1;
 593             if (gui_fullscreen) {
 594                 break;
 595             }
 596             if (!qemu_console_is_graphic(NULL)) {
 597                 /* release grab if going to a text console */
 598                 if (gui_grab) {
 599                     sdl_grab_end();
 600                 } else if (absolute_enabled) {
 601                     sdl_show_cursor();
 602                 }
 603             } else if (absolute_enabled) {
 604                 sdl_hide_cursor();
 605                 absolute_mouse_grab();
 606             }
 607             break;
 608         case 0x1b: /* '+' */
 609         case 0x35: /* '-' */
 610             if (!gui_fullscreen) {
 611                 int width = MAX(real_screen->w + (keycode == 0x1b ? 50 : -50),
 612                                 160);
 613                 int height = (surface_height(surface) * width) /
 614                     surface_width(surface);
 615
 616                 sdl_scale(width, height);
 617                 graphic_hw_invalidate(NULL);
 618                 graphic_hw_update(NULL);
 619                 gui_keysym = 1;
 620             }
 621         default:
 622             break;
 623         }
 624     } else if (!qemu_console_is_graphic(NULL)) {
 625         int keysym = 0;
 626
 627         if (ev->key.keysym.mod & (KMOD_LCTRL | KMOD_RCTRL)) {
 628             switch (ev->key.keysym.sym) {
 629             case SDLK_UP:
 630                 keysym = QEMU_KEY_CTRL_UP;
 631                 break;
 632             case SDLK_DOWN:
 633                 keysym = QEMU_KEY_CTRL_DOWN;
 634                 break;
 635             case SDLK_LEFT:
 636                 keysym = QEMU_KEY_CTRL_LEFT;
 637                 break;
 638             case SDLK_RIGHT:
 639                 keysym = QEMU_KEY_CTRL_RIGHT;
 640                 break;
 641             case SDLK_HOME:
 642                 keysym = QEMU_KEY_CTRL_HOME;
 643                 break;
 644             case SDLK_END:
 645                 keysym = QEMU_KEY_CTRL_END;
 646                 break;
 647             case SDLK_PAGEUP:
 648                 keysym = QEMU_KEY_CTRL_PAGEUP;
 649                 break;
 650             case SDLK_PAGEDOWN:
 651                 keysym = QEMU_KEY_CTRL_PAGEDOWN;
 652                 break;
 653             default:
 654                 break;
 655             }
 656         } else {
 657             switch (ev->key.keysym.sym) {
 658             case SDLK_UP:
 659                 keysym = QEMU_KEY_UP;
 660                 break;
 661             case SDLK_DOWN:
 662                 keysym = QEMU_KEY_DOWN;
 663                 break;
 664             case SDLK_LEFT:
 665                 keysym = QEMU_KEY_LEFT;
 666                 break;
 667             case SDLK_RIGHT:
 668                 keysym = QEMU_KEY_RIGHT;
 669                 break;
 670             case SDLK_HOME:
 671                 keysym = QEMU_KEY_HOME;
 672                 break;
 673             case SDLK_END:
 674                 keysym = QEMU_KEY_END;
 675                 break;
 676             case SDLK_PAGEUP:
 677                 keysym = QEMU_KEY_PAGEUP;
 678                 break;
 679             case SDLK_PAGEDOWN:
 680                 keysym = QEMU_KEY_PAGEDOWN;
 681                 break;
 682             case SDLK_BACKSPACE:
 683                 keysym = QEMU_KEY_BACKSPACE;
 684                 break;
 685             case SDLK_DELETE:
 686                 keysym = QEMU_KEY_DELETE;
 687                 break;
 688             default:
 689                 break;
 690             }
 691         }
 692         if (keysym) {
 693             kbd_put_keysym(keysym);
 694         } else if (ev->key.keysym.unicode != 0) {
 695             kbd_put_keysym(ev->key.keysym.unicode);
 696         }
 697     }
 698     if (qemu_console_is_graphic(NULL) && !gui_keysym) {
 699         sdl_process_key(&ev->key);
 700     }
 701 }
 702
 703 static void handle_keyup(SDL_Event *ev)
 704 {
 705     int mod_state;
 706
 707     if (!alt_grab) {
 708         mod_state = (ev->key.keysym.mod & gui_grab_code);
 709     } else {
 710         mod_state = (ev->key.keysym.mod & (gui_grab_code | KMOD_LSHIFT));
 711     }
 712     if (!mod_state && gui_key_modifier_pressed) {
 713         gui_key_modifier_pressed = 0;
 714         if (gui_keysym == 0) {
 715             /* exit/enter grab if pressing Ctrl-Alt */
 716             if (!gui_grab) {
 717                 if (qemu_console_is_graphic(NULL)) {
 718                     sdl_grab_start();
 719                 }
 720             } else if (!gui_fullscreen) {
 721                 sdl_grab_end();
 722             }
 723             /* SDL does not send back all the modifiers key, so we must
 724              * correct it. */
 725             reset_keys();
 726             return;
 727         }
 728         gui_keysym = 0;
 729     }
 730     if (qemu_console_is_graphic(NULL) && !gui_keysym) {
 731         sdl_process_key(&ev->key);
 732     }
 733 }
 734
 735 static void handle_mousemotion(SDL_Event *ev)
 736 {
 737     int max_x, max_y;
 738
 739     if (qemu_console_is_graphic(NULL) &&
 740         (qemu_input_is_absolute() || absolute_enabled)) {
 741         max_x = real_screen->w - 1;
 742         max_y = real_screen->h - 1;
 743         if (gui_grab && (ev->motion.x == 0 || ev->motion.y == 0 ||
 744             ev->motion.x == max_x || ev->motion.y == max_y)) {
 745             sdl_grab_end();
 746         }
 747         if (!gui_grab &&
 748             (ev->motion.x > 0 && ev->motion.x < max_x &&
 749             ev->motion.y > 0 && ev->motion.y < max_y)) {
 750             sdl_grab_start();
 751         }
 752     }
 753     if (gui_grab || qemu_input_is_absolute() || absolute_enabled) {
 754         sdl_send_mouse_event(ev->motion.xrel, ev->motion.yrel,
 755                              ev->motion.x, ev->motion.y, ev->motion.state);
 756     }
 757 }
 758
 759 static void handle_mousebutton(SDL_Event *ev)
 760 {
 761     int buttonstate = SDL_GetMouseState(NULL, NULL);
 762     SDL_MouseButtonEvent *bev;
 763
 764     if (!qemu_console_is_graphic(NULL)) {
 765         return;
 766     }
 767
 768     bev = &ev->button;
 769     if (!gui_grab && !qemu_input_is_absolute()) {
 770         if (ev->type == SDL_MOUSEBUTTONUP && bev->button == SDL_BUTTON_LEFT) {
 771             /* start grabbing all events */
 772             sdl_grab_start();
 773         }
 774     } else {
 775         if (ev->type == SDL_MOUSEBUTTONDOWN) {
 776             buttonstate |= SDL_BUTTON(bev->button);
 777         } else {
 778             buttonstate &= ~SDL_BUTTON(bev->button);
 779         }
 780         sdl_send_mouse_event(0, 0, bev->x, bev->y, buttonstate);
 781     }
 782 }
 783
 784 static void handle_activation(SDL_Event *ev)
 785 {
 786 #ifdef _WIN32
 787     /* Disable grab if the window no longer has the focus
 788      * (Windows-only workaround) */
 789     if (gui_grab && ev->active.state == SDL_APPINPUTFOCUS &&
 790         !ev->active.gain && !gui_fullscreen) {
 791         sdl_grab_end();
 792     }
 793 #endif
 794     if (!gui_grab && ev->active.gain && qemu_console_is_graphic(NULL) &&
 795         (qemu_input_is_absolute() || absolute_enabled)) {
 796         absolute_mouse_grab();
 797     }
 798     if (ev->active.state & SDL_APPACTIVE) {
 799         if (ev->active.gain) {
 800             /* Back to default interval */
 801             update_displaychangelistener(dcl, GUI_REFRESH_INTERVAL_DEFAULT);
 802         } else {
 803             /* Sleeping interval.  Not using the long default here as
 804              * sdl_refresh does not only update the guest screen, but
 805              * also checks for gui events. */
 806             update_displaychangelistener(dcl, 500);
 807         }
 808     }
 809 }
 810
 811 static void sdl_refresh(DisplayChangeListener *dcl)
 812 {
 813     SDL_Event ev1, *ev = &ev1;
 814     int idle = 1;
 815
 816     if (last_vm_running != runstate_is_running()) {
 817         last_vm_running = runstate_is_running();
 818         sdl_update_caption();
 819     }
 820
 821     graphic_hw_update(NULL);
 822     SDL_EnableUNICODE(!qemu_console_is_graphic(NULL));
 823
 824     while (SDL_PollEvent(ev)) {
 825         switch (ev->type) {
 826         case SDL_VIDEOEXPOSE:
 827             sdl_update(dcl, 0, 0, real_screen->w, real_screen->h);
 828             break;
 829         case SDL_KEYDOWN:
 830             idle = 0;
 831             handle_keydown(ev);
 832             break;
 833         case SDL_KEYUP:
 834             idle = 0;
 835             handle_keyup(ev);
 836             break;
 837         case SDL_QUIT:
 838             if (!no_quit) {
 839                 no_shutdown = 0;
 840                 qemu_system_shutdown_request();
 841             }
 842             break;
 843         case SDL_MOUSEMOTION:
 844             idle = 0;
 845             handle_mousemotion(ev);
 846             break;
 847         case SDL_MOUSEBUTTONDOWN:
 848         case SDL_MOUSEBUTTONUP:
 849             idle = 0;
 850             handle_mousebutton(ev);
 851             break;
 852         case SDL_ACTIVEEVENT:
 853             handle_activation(ev);
 854             break;
 855         case SDL_VIDEORESIZE:
 856             sdl_scale(ev->resize.w, ev->resize.h);
 857             graphic_hw_invalidate(NULL);
 858             graphic_hw_update(NULL);
 859             break;
 860         default:
 861             break;
 862         }
 863     }
 864
 865     if (idle) {
 866         if (idle_counter < SDL_MAX_IDLE_COUNT) {
 867             idle_counter++;
 868             if (idle_counter >= SDL_MAX_IDLE_COUNT) {
 869                 dcl->update_interval = GUI_REFRESH_INTERVAL_DEFAULT;
 870             }
 871         }
 872     } else {
 873         idle_counter = 0;
 874         dcl->update_interval = SDL_REFRESH_INTERVAL_BUSY;
 875     }
 876 }
 877
 878 static void sdl_mouse_warp(DisplayChangeListener *dcl,
 879                            int x, int y, int on)
 880 {
 881     if (on) {
 882         if (!guest_cursor)
 883             sdl_show_cursor();
 884         if (gui_grab || qemu_input_is_absolute() || absolute_enabled) {
 885             SDL_SetCursor(guest_sprite);
 886             if (!qemu_input_is_absolute() && !absolute_enabled) {
 887                 SDL_WarpMouse(x, y);
 888             }
 889         }
 890     } else if (gui_grab)
 891         sdl_hide_cursor();
 892     guest_cursor = on;
 893     guest_x = x, guest_y = y;
 894 }
 895
 896 static void sdl_mouse_define(DisplayChangeListener *dcl,
 897                              QEMUCursor *c)
 898 {
 899     uint8_t *image, *mask;
 900     int bpl;
 901
 902     if (guest_sprite)
 903         SDL_FreeCursor(guest_sprite);
 904
 905     bpl = cursor_get_mono_bpl(c);
 906     image = g_malloc0(bpl * c->height);
 907     mask  = g_malloc0(bpl * c->height);
 908     cursor_get_mono_image(c, 0x000000, image);
 909     cursor_get_mono_mask(c, 0, mask);
 910     guest_sprite = SDL_CreateCursor(image, mask, c->width, c->height,
 911                                     c->hot_x, c->hot_y);
 912     g_free(image);
 913     g_free(mask);
 914
 915     if (guest_cursor &&
 916             (gui_grab || qemu_input_is_absolute() || absolute_enabled))
 917         SDL_SetCursor(guest_sprite);
 918 }
 919
 920 static void sdl_cleanup(void)
 921 {
 922     if (guest_sprite)
 923         SDL_FreeCursor(guest_sprite);
 924     SDL_QuitSubSystem(SDL_INIT_VIDEO);
 925 }
 926
 927 static const DisplayChangeListenerOps dcl_ops = {
 928     .dpy_name             = "sdl",
 929     .dpy_gfx_update       = sdl_update,
 930     .dpy_gfx_switch       = sdl_switch,
 931     .dpy_gfx_check_format = sdl_check_format,
 932     .dpy_refresh          = sdl_refresh,
 933     .dpy_mouse_set        = sdl_mouse_warp,
 934     .dpy_cursor_define    = sdl_mouse_define,
 935 };
 936
 937 void sdl_display_early_init(int opengl)
 938 {
 939     if (opengl == 1 /* on */) {
 940         fprintf(stderr,
 941                 "SDL1 display code has no opengl support.\n"
 942                 "Please recompile qemu with SDL2, using\n"
 943                 "./configure --enable-sdl --with-sdlabi=2.0\n");
 944     }
 945 }
 946
 947 void sdl_display_init(DisplayState *ds, int full_screen, int no_frame)
 948 {
 949     int flags;
 950     uint8_t data = 0;
 951     const SDL_VideoInfo *vi;
 952     SDL_SysWMinfo info;
 953     char *filename;
 954
 955 #if defined(__APPLE__)
 956     /* always use generic keymaps */
 957     if (!keyboard_layout)
 958         keyboard_layout = "en-us";
 959 #endif
 960     if(keyboard_layout) {
 961         kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
 962         if (!kbd_layout)
 963             exit(1);
 964     }
 965
 966     if (no_frame)
 967         gui_noframe = 1;
 968
 969     if (!full_screen) {
 970         setenv("SDL_VIDEO_ALLOW_SCREENSAVER", "1", 0);
 971     }
 972 #ifdef __linux__
 973     /* on Linux, SDL may use fbcon|directfb|svgalib when run without
 974      * accessible $DISPLAY to open X11 window.  This is often the case
 975      * when qemu is run using sudo.  But in this case, and when actually
 976      * run in X11 environment, SDL fights with X11 for the video card,
 977      * making current display unavailable, often until reboot.
 978      * So make x11 the default SDL video driver if this variable is unset.
 979      * This is a bit hackish but saves us from bigger problem.
 980      * Maybe it's a good idea to fix this in SDL instead.
 981      */
 982     setenv("SDL_VIDEODRIVER", "x11", 0);
 983 #endif
 984
 985     /* Enable normal up/down events for Caps-Lock and Num-Lock keys.
 986      * This requires SDL >= 1.2.14. */
 987     setenv("SDL_DISABLE_LOCK_KEYS", "1", 1);
 988
 989     flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
 990     if (SDL_Init (flags)) {
 991         fprintf(stderr, "Could not initialize SDL(%s) - exiting\n",
 992                 SDL_GetError());
 993         exit(1);
 994     }
 995     vi = SDL_GetVideoInfo();
 996     host_format = *(vi->vfmt);
 997
 998     /* Load a 32x32x4 image. White pixels are transparent. */
 999     filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, "qemu-icon.bmp");
1000     if (filename) {
1001         SDL_Surface *image = SDL_LoadBMP(filename);
1002         if (image) {
1003             uint32_t colorkey = SDL_MapRGB(image->format, 255, 255, 255);
1004             SDL_SetColorKey(image, SDL_SRCCOLORKEY, colorkey);
1005             SDL_WM_SetIcon(image, NULL);
1006         }
1007         g_free(filename);
1008     }
1009
1010     if (full_screen) {
1011         gui_fullscreen = 1;
1012         sdl_grab_start();
1013     }
1014
1015     dcl = g_new0(DisplayChangeListener, 1);
1016     dcl->ops = &dcl_ops;
1017     register_displaychangelistener(dcl);
1018
1019     mouse_mode_notifier.notify = sdl_mouse_mode_change;
1020     qemu_add_mouse_mode_change_notifier(&mouse_mode_notifier);
1021
1022     sdl_update_caption();
1023     SDL_EnableKeyRepeat(250, 50);
1024     gui_grab = 0;
1025
1026     sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
1027     sdl_cursor_normal = SDL_GetCursor();
1028
1029     memset(&info, 0, sizeof(info));
1030     SDL_VERSION(&info.version);
1031     if (SDL_GetWMInfo(&info)) {
1032         int i;
1033         for (i = 0; ; i++) {
1034             /* All consoles share the same window */
1035             QemuConsole *con = qemu_console_lookup_by_index(i);
1036             if (con) {
1037 #if defined(SDL_VIDEO_DRIVER_X11)
1038                 qemu_console_set_window_id(con, info.info.x11.wmwindow);
1039 #elif defined(SDL_VIDEO_DRIVER_NANOX) || \
1040       defined(SDL_VIDEO_DRIVER_WINDIB) || defined(SDL_VIDEO_DRIVER_DDRAW) || \
1041       defined(SDL_VIDEO_DRIVER_GAPI) || \
1042       defined(SDL_VIDEO_DRIVER_RISCOS)
1043                 qemu_console_set_window_id(con, (int) (uintptr_t) info.window);
1044 #else
1045                 qemu_console_set_window_id(con, info.data);
1046 #endif
1047             } else {
1048                 break;
1049             }
1050         }
1051     }
1052
1053     atexit(sdl_cleanup);
1054 }