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 #ifndef WIN32
  38 #include "x_keymap.h"
  39 #endif
  40 #include "sdl_zoom.h"
  41
  42 static DisplayChangeListener *dcl;
  43 static DisplaySurface *surface;
  44 static SDL_Surface *real_screen;
  45 static SDL_Surface *guest_screen = NULL;
  46 static int gui_grab; /* if true, all keyboard/mouse events are grabbed */
  47 static int last_vm_running;
  48 static bool gui_saved_scaling;
  49 static int gui_saved_width;
  50 static int gui_saved_height;
  51 static int gui_saved_grab;
  52 static int gui_fullscreen;
  53 static int gui_noframe;
  54 static int gui_key_modifier_pressed;
  55 static int gui_keysym;
  56 static int gui_grab_code = KMOD_LALT | KMOD_LCTRL;
  57 static uint8_t modifiers_state[256];
  58 static SDL_Cursor *sdl_cursor_normal;
  59 static SDL_Cursor *sdl_cursor_hidden;
  60 static int absolute_enabled = 0;
  61 static int guest_cursor = 0;
  62 static int guest_x, guest_y;
  63 static SDL_Cursor *guest_sprite = NULL;
  64 static SDL_PixelFormat host_format;
  65 static int scaling_active = 0;
  66 static Notifier mouse_mode_notifier;
  67 static int idle_counter;
  68 static const guint16 *keycode_map;
  69 static size_t keycode_maplen;
  70
  71 #define SDL_REFRESH_INTERVAL_BUSY 10
  72 #define SDL_MAX_IDLE_COUNT (2 * GUI_REFRESH_INTERVAL_DEFAULT \
  73                             / SDL_REFRESH_INTERVAL_BUSY + 1)
  74
  75 #if 0
  76 #define DEBUG_SDL
  77 #endif
  78
  79 static void sdl_update(DisplayChangeListener *dcl,
  80                        int x, int y, int w, int h)
  81 {
  82     SDL_Rect rec;
  83     rec.x = x;
  84     rec.y = y;
  85     rec.w = w;
  86     rec.h = h;
  87
  88 #ifdef DEBUG_SDL
  89     printf("SDL: Updating x=%d y=%d w=%d h=%d (scaling: %d)\n",
  90            x, y, w, h, scaling_active);
  91 #endif
  92
  93     if (guest_screen) {
  94         if (!scaling_active) {
  95             SDL_BlitSurface(guest_screen, &rec, real_screen, &rec);
  96         } else {
  97             if (sdl_zoom_blit(guest_screen, real_screen, SMOOTHING_ON, &rec) < 0) {
  98                 fprintf(stderr, "Zoom blit failed\n");
  99                 exit(1);
 100             }
 101         }
 102     }
 103     SDL_UpdateRect(real_screen, rec.x, rec.y, rec.w, rec.h);
 104 }
 105
 106 static void do_sdl_resize(int width, int height, int bpp)
 107 {
 108     int flags;
 109     SDL_Surface *tmp_screen;
 110
 111 #ifdef DEBUG_SDL
 112     printf("SDL: Resizing to %dx%d bpp %d\n", width, height, bpp);
 113 #endif
 114
 115     flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
 116     if (gui_fullscreen) {
 117         flags |= SDL_FULLSCREEN;
 118     } else {
 119         flags |= SDL_RESIZABLE;
 120     }
 121     if (gui_noframe)
 122         flags |= SDL_NOFRAME;
 123
 124     tmp_screen = SDL_SetVideoMode(width, height, bpp, flags);
 125     if (!real_screen) {
 126         if (!tmp_screen) {
 127             fprintf(stderr, "Could not open SDL display (%dx%dx%d): %s\n",
 128                     width, height, bpp, SDL_GetError());
 129             exit(1);
 130         }
 131     } else {
 132         /*
 133          * Revert to the previous video mode if the change of resizing or
 134          * resolution failed.
 135          */
 136         if (!tmp_screen) {
 137             fprintf(stderr, "Failed to set SDL display (%dx%dx%d): %s\n",
 138                     width, height, bpp, SDL_GetError());
 139             return;
 140         }
 141     }
 142
 143     real_screen = tmp_screen;
 144 }
 145
 146 static void sdl_switch(DisplayChangeListener *dcl,
 147                        DisplaySurface *new_surface)
 148 {
 149     PixelFormat pf;
 150
 151     /* temporary hack: allows to call sdl_switch to handle scaling changes */
 152     if (new_surface) {
 153         surface = new_surface;
 154     }
 155     pf = qemu_pixelformat_from_pixman(surface->format);
 156
 157     if (!scaling_active) {
 158         do_sdl_resize(surface_width(surface), surface_height(surface), 0);
 159     } else if (real_screen->format->BitsPerPixel !=
 160                surface_bits_per_pixel(surface)) {
 161         do_sdl_resize(real_screen->w, real_screen->h,
 162                       surface_bits_per_pixel(surface));
 163     }
 164
 165     if (guest_screen != NULL) {
 166         SDL_FreeSurface(guest_screen);
 167     }
 168
 169 #ifdef DEBUG_SDL
 170     printf("SDL: Creating surface with masks: %08x %08x %08x %08x\n",
 171            pf.rmask, pf.gmask, pf.bmask, pf.amask);
 172 #endif
 173
 174     guest_screen = SDL_CreateRGBSurfaceFrom
 175         (surface_data(surface),
 176          surface_width(surface), surface_height(surface),
 177          surface_bits_per_pixel(surface), surface_stride(surface),
 178          pf.rmask, pf.gmask,
 179          pf.bmask, pf.amask);
 180 }
 181
 182 static bool sdl_check_format(DisplayChangeListener *dcl,
 183                              pixman_format_code_t format)
 184 {
 185     /*
 186      * We let SDL convert for us a few more formats than,
 187      * the native ones. Thes are the ones I have tested.
 188      */
 189     return (format == PIXMAN_x8r8g8b8 ||
 190             format == PIXMAN_b8g8r8x8 ||
 191             format == PIXMAN_x1r5g5b5 ||
 192             format == PIXMAN_r5g6b5);
 193 }
 194
 195 /* generic keyboard conversion */
 196
 197 #include "sdl_keysym.h"
 198
 199 static kbd_layout_t *kbd_layout = NULL;
 200
 201 static uint8_t sdl_keyevent_to_keycode_generic(const SDL_KeyboardEvent *ev)
 202 {
 203     int keysym;
 204     /* workaround for X11+SDL bug with AltGR */
 205     keysym = ev->keysym.sym;
 206     if (keysym == 0 && ev->keysym.scancode == 113)
 207         keysym = SDLK_MODE;
 208     /* For Japanese key '\' and '|' */
 209     if (keysym == 92 && ev->keysym.scancode == 133) {
 210         keysym = 0xa5;
 211     }
 212     return keysym2scancode(kbd_layout, keysym) & SCANCODE_KEYMASK;
 213 }
 214
 215
 216 static const guint16 *sdl_get_keymap(size_t *maplen)
 217 {
 218 #if defined(WIN32)
 219     *maplen = qemu_input_map_atset1_to_qcode_len;
 220     return qemu_input_map_atset1_to_qcode;
 221 #else
 222 #if defined(SDL_VIDEO_DRIVER_X11)
 223     SDL_SysWMinfo info;
 224
 225     SDL_VERSION(&info.version);
 226     if (SDL_GetWMInfo(&info) > 0) {
 227         return qemu_xkeymap_mapping_table(
 228             info.info.x11.display, maplen);
 229     }
 230 #endif
 231     g_warning("Unsupported SDL video driver / platform.\n"
 232               "Assuming Linux KBD scancodes, but probably wrong.\n"
 233               "Please report to qemu-devel@nongnu.org\n"
 234               "including the following information:\n"
 235               "\n"
 236               "  - Operating system\n"
 237               "  - SDL video driver\n");
 238     *maplen = qemu_input_map_xorgkbd_to_qcode_len;
 239     return qemu_input_map_xorgkbd_to_qcode;
 240 #endif
 241 }
 242
 243 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 244 {
 245     if (!keycode_map) {
 246         return 0;
 247     }
 248     if (ev->keysym.scancode > keycode_maplen) {
 249         return 0;
 250     }
 251
 252     return keycode_map[ev->keysym.scancode];
 253 }
 254
 255 static void reset_keys(void)
 256 {
 257     int i;
 258     for(i = 0; i < 256; i++) {
 259         if (modifiers_state[i]) {
 260             qemu_input_event_send_key_number(dcl->con, i, false);
 261             modifiers_state[i] = 0;
 262         }
 263     }
 264 }
 265
 266 static void sdl_process_key(SDL_KeyboardEvent *ev)
 267 {
 268     int keycode;
 269
 270     if (ev->keysym.sym == SDLK_PAUSE) {
 271         /* specific case */
 272         qemu_input_event_send_key_qcode(dcl->con, Q_KEY_CODE_PAUSE,
 273                                         ev->type == SDL_KEYDOWN);
 274         return;
 275     }
 276
 277     if (kbd_layout) {
 278         keycode = sdl_keyevent_to_keycode_generic(ev);
 279     } else {
 280         keycode = sdl_keyevent_to_keycode(ev);
 281     }
 282
 283     switch(keycode) {
 284     case 0x00:
 285         /* sent when leaving window: reset the modifiers state */
 286         reset_keys();
 287         return;
 288     case 0x2a:                          /* Left Shift */
 289     case 0x36:                          /* Right Shift */
 290     case 0x1d:                          /* Left CTRL */
 291     case 0x9d:                          /* Right CTRL */
 292     case 0x38:                          /* Left ALT */
 293     case 0xb8:                         /* Right ALT */
 294         if (ev->type == SDL_KEYUP)
 295             modifiers_state[keycode] = 0;
 296         else
 297             modifiers_state[keycode] = 1;
 298         break;
 299 #define QEMU_SDL_VERSION ((SDL_MAJOR_VERSION << 8) + SDL_MINOR_VERSION)
 300 #if QEMU_SDL_VERSION < 0x102 || QEMU_SDL_VERSION == 0x102 && SDL_PATCHLEVEL < 14
 301         /* SDL versions before 1.2.14 don't support key up for caps/num lock. */
 302     case 0x45: /* num lock */
 303     case 0x3a: /* caps lock */
 304         /* SDL does not send the key up event, so we generate it */
 305         qemu_input_event_send_key_number(dcl->con, keycode, true);
 306         qemu_input_event_send_key_number(dcl->con, keycode, false);
 307         return;
 308 #endif
 309     }
 310
 311     /* now send the key code */
 312     qemu_input_event_send_key_number(dcl->con, keycode,
 313                                      ev->type == SDL_KEYDOWN);
 314 }
 315
 316 static void sdl_update_caption(void)
 317 {
 318     char win_title[1024];
 319     char icon_title[1024];
 320     const char *status = "";
 321
 322     if (!runstate_is_running())
 323         status = " [Stopped]";
 324     else if (gui_grab) {
 325         if (alt_grab)
 326             status = " - Press Ctrl-Alt-Shift to exit mouse grab";
 327         else if (ctrl_grab)
 328             status = " - Press Right-Ctrl to exit mouse grab";
 329         else
 330             status = " - Press Ctrl-Alt to exit mouse grab";
 331     }
 332
 333     if (qemu_name) {
 334         snprintf(win_title, sizeof(win_title), "QEMU (%s)%s", qemu_name, status);
 335         snprintf(icon_title, sizeof(icon_title), "QEMU (%s)", qemu_name);
 336     } else {
 337         snprintf(win_title, sizeof(win_title), "QEMU%s", status);
 338         snprintf(icon_title, sizeof(icon_title), "QEMU");
 339     }
 340
 341     SDL_WM_SetCaption(win_title, icon_title);
 342 }
 343
 344 static void sdl_hide_cursor(void)
 345 {
 346     if (!cursor_hide)
 347         return;
 348
 349     if (qemu_input_is_absolute()) {
 350         SDL_ShowCursor(1);
 351         SDL_SetCursor(sdl_cursor_hidden);
 352     } else {
 353         SDL_ShowCursor(0);
 354     }
 355 }
 356
 357 static void sdl_show_cursor(void)
 358 {
 359     if (!cursor_hide)
 360         return;
 361
 362     if (!qemu_input_is_absolute() || !qemu_console_is_graphic(NULL)) {
 363         SDL_ShowCursor(1);
 364         if (guest_cursor &&
 365                 (gui_grab || qemu_input_is_absolute() || absolute_enabled))
 366             SDL_SetCursor(guest_sprite);
 367         else
 368             SDL_SetCursor(sdl_cursor_normal);
 369     }
 370 }
 371
 372 static void sdl_grab_start(void)
 373 {
 374     /*
 375      * If the application is not active, do not try to enter grab state. This
 376      * prevents 'SDL_WM_GrabInput(SDL_GRAB_ON)' from blocking all the
 377      * application (SDL bug).
 378      */
 379     if (!(SDL_GetAppState() & SDL_APPINPUTFOCUS)) {
 380         return;
 381     }
 382     if (guest_cursor) {
 383         SDL_SetCursor(guest_sprite);
 384         if (!qemu_input_is_absolute() && !absolute_enabled) {
 385             SDL_WarpMouse(guest_x, guest_y);
 386         }
 387     } else
 388         sdl_hide_cursor();
 389     SDL_WM_GrabInput(SDL_GRAB_ON);
 390     gui_grab = 1;
 391     sdl_update_caption();
 392 }
 393
 394 static void sdl_grab_end(void)
 395 {
 396     SDL_WM_GrabInput(SDL_GRAB_OFF);
 397     gui_grab = 0;
 398     sdl_show_cursor();
 399     sdl_update_caption();
 400 }
 401
 402 static void absolute_mouse_grab(void)
 403 {
 404     int mouse_x, mouse_y;
 405
 406     SDL_GetMouseState(&mouse_x, &mouse_y);
 407     if (mouse_x > 0 && mouse_x < real_screen->w - 1 &&
 408         mouse_y > 0 && mouse_y < real_screen->h - 1) {
 409         sdl_grab_start();
 410     }
 411 }
 412
 413 static void sdl_mouse_mode_change(Notifier *notify, void *data)
 414 {
 415     if (qemu_input_is_absolute()) {
 416         if (!absolute_enabled) {
 417             absolute_enabled = 1;
 418             if (qemu_console_is_graphic(NULL)) {
 419                 absolute_mouse_grab();
 420             }
 421         }
 422     } else if (absolute_enabled) {
 423         if (!gui_fullscreen) {
 424             sdl_grab_end();
 425         }
 426         absolute_enabled = 0;
 427     }
 428 }
 429
 430 static void sdl_send_mouse_event(int dx, int dy, int x, int y, int state)
 431 {
 432     static uint32_t bmap[INPUT_BUTTON__MAX] = {
 433         [INPUT_BUTTON_LEFT]       = SDL_BUTTON(SDL_BUTTON_LEFT),
 434         [INPUT_BUTTON_MIDDLE]     = SDL_BUTTON(SDL_BUTTON_MIDDLE),
 435         [INPUT_BUTTON_RIGHT]      = SDL_BUTTON(SDL_BUTTON_RIGHT),
 436         [INPUT_BUTTON_WHEEL_UP]   = SDL_BUTTON(SDL_BUTTON_WHEELUP),
 437         [INPUT_BUTTON_WHEEL_DOWN] = SDL_BUTTON(SDL_BUTTON_WHEELDOWN),
 438     };
 439     static uint32_t prev_state;
 440
 441     if (prev_state != state) {
 442         qemu_input_update_buttons(dcl->con, bmap, prev_state, state);
 443         prev_state = state;
 444     }
 445
 446     if (qemu_input_is_absolute()) {
 447         qemu_input_queue_abs(dcl->con, INPUT_AXIS_X, x,
 448                              0, real_screen->w);
 449         qemu_input_queue_abs(dcl->con, INPUT_AXIS_Y, y,
 450                              0, real_screen->h);
 451     } else {
 452         if (guest_cursor) {
 453             x -= guest_x;
 454             y -= guest_y;
 455             guest_x += x;
 456             guest_y += y;
 457             dx = x;
 458             dy = y;
 459         }
 460         qemu_input_queue_rel(dcl->con, INPUT_AXIS_X, dx);
 461         qemu_input_queue_rel(dcl->con, INPUT_AXIS_Y, dy);
 462     }
 463     qemu_input_event_sync();
 464 }
 465
 466 static void sdl_scale(int width, int height)
 467 {
 468     int bpp = real_screen->format->BitsPerPixel;
 469
 470 #ifdef DEBUG_SDL
 471     printf("SDL: Scaling to %dx%d bpp %d\n", width, height, bpp);
 472 #endif
 473
 474     if (bpp != 16 && bpp != 32) {
 475         bpp = 32;
 476     }
 477     do_sdl_resize(width, height, bpp);
 478     scaling_active = 1;
 479 }
 480
 481 static void toggle_full_screen(void)
 482 {
 483     int width = surface_width(surface);
 484     int height = surface_height(surface);
 485     int bpp = surface_bits_per_pixel(surface);
 486
 487     gui_fullscreen = !gui_fullscreen;
 488     if (gui_fullscreen) {
 489         gui_saved_width = real_screen->w;
 490         gui_saved_height = real_screen->h;
 491         gui_saved_scaling = scaling_active;
 492
 493         do_sdl_resize(width, height, bpp);
 494         scaling_active = 0;
 495
 496         gui_saved_grab = gui_grab;
 497         sdl_grab_start();
 498     } else {
 499         if (gui_saved_scaling) {
 500             sdl_scale(gui_saved_width, gui_saved_height);
 501         } else {
 502             do_sdl_resize(width, height, 0);
 503         }
 504         if (!gui_saved_grab || !qemu_console_is_graphic(NULL)) {
 505             sdl_grab_end();
 506         }
 507     }
 508     graphic_hw_invalidate(NULL);
 509     graphic_hw_update(NULL);
 510 }
 511
 512 static void handle_keydown(SDL_Event *ev)
 513 {
 514     int mod_state;
 515     int keycode;
 516
 517     if (alt_grab) {
 518         mod_state = (SDL_GetModState() & (gui_grab_code | KMOD_LSHIFT)) ==
 519                     (gui_grab_code | KMOD_LSHIFT);
 520     } else if (ctrl_grab) {
 521         mod_state = (SDL_GetModState() & KMOD_RCTRL) == KMOD_RCTRL;
 522     } else {
 523         mod_state = (SDL_GetModState() & gui_grab_code) == gui_grab_code;
 524     }
 525     gui_key_modifier_pressed = mod_state;
 526
 527     if (gui_key_modifier_pressed) {
 528         keycode = sdl_keyevent_to_keycode(&ev->key);
 529         switch (keycode) {
 530         case 0x21: /* 'f' key on US keyboard */
 531             toggle_full_screen();
 532             gui_keysym = 1;
 533             break;
 534         case 0x16: /* 'u' key on US keyboard */
 535             if (scaling_active) {
 536                 scaling_active = 0;
 537                 sdl_switch(dcl, NULL);
 538                 graphic_hw_invalidate(NULL);
 539                 graphic_hw_update(NULL);
 540             }
 541             gui_keysym = 1;
 542             break;
 543         case 0x02 ... 0x0a: /* '1' to '9' keys */
 544             /* Reset the modifiers sent to the current console */
 545             reset_keys();
 546             console_select(keycode - 0x02);
 547             gui_keysym = 1;
 548             if (gui_fullscreen) {
 549                 break;
 550             }
 551             if (!qemu_console_is_graphic(NULL)) {
 552                 /* release grab if going to a text console */
 553                 if (gui_grab) {
 554                     sdl_grab_end();
 555                 } else if (absolute_enabled) {
 556                     sdl_show_cursor();
 557                 }
 558             } else if (absolute_enabled) {
 559                 sdl_hide_cursor();
 560                 absolute_mouse_grab();
 561             }
 562             break;
 563         case 0x1b: /* '+' */
 564         case 0x35: /* '-' */
 565             if (!gui_fullscreen) {
 566                 int width = MAX(real_screen->w + (keycode == 0x1b ? 50 : -50),
 567                                 160);
 568                 int height = (surface_height(surface) * width) /
 569                     surface_width(surface);
 570
 571                 sdl_scale(width, height);
 572                 graphic_hw_invalidate(NULL);
 573                 graphic_hw_update(NULL);
 574                 gui_keysym = 1;
 575             }
 576         default:
 577             break;
 578         }
 579     } else if (!qemu_console_is_graphic(NULL)) {
 580         int keysym = 0;
 581
 582         if (ev->key.keysym.mod & (KMOD_LCTRL | KMOD_RCTRL)) {
 583             switch (ev->key.keysym.sym) {
 584             case SDLK_UP:
 585                 keysym = QEMU_KEY_CTRL_UP;
 586                 break;
 587             case SDLK_DOWN:
 588                 keysym = QEMU_KEY_CTRL_DOWN;
 589                 break;
 590             case SDLK_LEFT:
 591                 keysym = QEMU_KEY_CTRL_LEFT;
 592                 break;
 593             case SDLK_RIGHT:
 594                 keysym = QEMU_KEY_CTRL_RIGHT;
 595                 break;
 596             case SDLK_HOME:
 597                 keysym = QEMU_KEY_CTRL_HOME;
 598                 break;
 599             case SDLK_END:
 600                 keysym = QEMU_KEY_CTRL_END;
 601                 break;
 602             case SDLK_PAGEUP:
 603                 keysym = QEMU_KEY_CTRL_PAGEUP;
 604                 break;
 605             case SDLK_PAGEDOWN:
 606                 keysym = QEMU_KEY_CTRL_PAGEDOWN;
 607                 break;
 608             default:
 609                 break;
 610             }
 611         } else {
 612             switch (ev->key.keysym.sym) {
 613             case SDLK_UP:
 614                 keysym = QEMU_KEY_UP;
 615                 break;
 616             case SDLK_DOWN:
 617                 keysym = QEMU_KEY_DOWN;
 618                 break;
 619             case SDLK_LEFT:
 620                 keysym = QEMU_KEY_LEFT;
 621                 break;
 622             case SDLK_RIGHT:
 623                 keysym = QEMU_KEY_RIGHT;
 624                 break;
 625             case SDLK_HOME:
 626                 keysym = QEMU_KEY_HOME;
 627                 break;
 628             case SDLK_END:
 629                 keysym = QEMU_KEY_END;
 630                 break;
 631             case SDLK_PAGEUP:
 632                 keysym = QEMU_KEY_PAGEUP;
 633                 break;
 634             case SDLK_PAGEDOWN:
 635                 keysym = QEMU_KEY_PAGEDOWN;
 636                 break;
 637             case SDLK_BACKSPACE:
 638                 keysym = QEMU_KEY_BACKSPACE;
 639                 break;
 640             case SDLK_DELETE:
 641                 keysym = QEMU_KEY_DELETE;
 642                 break;
 643             default:
 644                 break;
 645             }
 646         }
 647         if (keysym) {
 648             kbd_put_keysym(keysym);
 649         } else if (ev->key.keysym.unicode != 0) {
 650             kbd_put_keysym(ev->key.keysym.unicode);
 651         }
 652     }
 653     if (qemu_console_is_graphic(NULL) && !gui_keysym) {
 654         sdl_process_key(&ev->key);
 655     }
 656 }
 657
 658 static void handle_keyup(SDL_Event *ev)
 659 {
 660     int mod_state;
 661
 662     if (!alt_grab) {
 663         mod_state = (ev->key.keysym.mod & gui_grab_code);
 664     } else {
 665         mod_state = (ev->key.keysym.mod & (gui_grab_code | KMOD_LSHIFT));
 666     }
 667     if (!mod_state && gui_key_modifier_pressed) {
 668         gui_key_modifier_pressed = 0;
 669         if (gui_keysym == 0) {
 670             /* exit/enter grab if pressing Ctrl-Alt */
 671             if (!gui_grab) {
 672                 if (qemu_console_is_graphic(NULL)) {
 673                     sdl_grab_start();
 674                 }
 675             } else if (!gui_fullscreen) {
 676                 sdl_grab_end();
 677             }
 678             /* SDL does not send back all the modifiers key, so we must
 679              * correct it. */
 680             reset_keys();
 681             return;
 682         }
 683         gui_keysym = 0;
 684     }
 685     if (qemu_console_is_graphic(NULL) && !gui_keysym) {
 686         sdl_process_key(&ev->key);
 687     }
 688 }
 689
 690 static void handle_mousemotion(SDL_Event *ev)
 691 {
 692     int max_x, max_y;
 693
 694     if (qemu_console_is_graphic(NULL) &&
 695         (qemu_input_is_absolute() || absolute_enabled)) {
 696         max_x = real_screen->w - 1;
 697         max_y = real_screen->h - 1;
 698         if (gui_grab && (ev->motion.x == 0 || ev->motion.y == 0 ||
 699             ev->motion.x == max_x || ev->motion.y == max_y)) {
 700             sdl_grab_end();
 701         }
 702         if (!gui_grab &&
 703             (ev->motion.x > 0 && ev->motion.x < max_x &&
 704             ev->motion.y > 0 && ev->motion.y < max_y)) {
 705             sdl_grab_start();
 706         }
 707     }
 708     if (gui_grab || qemu_input_is_absolute() || absolute_enabled) {
 709         sdl_send_mouse_event(ev->motion.xrel, ev->motion.yrel,
 710                              ev->motion.x, ev->motion.y, ev->motion.state);
 711     }
 712 }
 713
 714 static void handle_mousebutton(SDL_Event *ev)
 715 {
 716     int buttonstate = SDL_GetMouseState(NULL, NULL);
 717     SDL_MouseButtonEvent *bev;
 718
 719     if (!qemu_console_is_graphic(NULL)) {
 720         return;
 721     }
 722
 723     bev = &ev->button;
 724     if (!gui_grab && !qemu_input_is_absolute()) {
 725         if (ev->type == SDL_MOUSEBUTTONUP && bev->button == SDL_BUTTON_LEFT) {
 726             /* start grabbing all events */
 727             sdl_grab_start();
 728         }
 729     } else {
 730         if (ev->type == SDL_MOUSEBUTTONDOWN) {
 731             buttonstate |= SDL_BUTTON(bev->button);
 732         } else {
 733             buttonstate &= ~SDL_BUTTON(bev->button);
 734         }
 735         sdl_send_mouse_event(0, 0, bev->x, bev->y, buttonstate);
 736     }
 737 }
 738
 739 static void handle_activation(SDL_Event *ev)
 740 {
 741 #ifdef _WIN32
 742     /* Disable grab if the window no longer has the focus
 743      * (Windows-only workaround) */
 744     if (gui_grab && ev->active.state == SDL_APPINPUTFOCUS &&
 745         !ev->active.gain && !gui_fullscreen) {
 746         sdl_grab_end();
 747     }
 748 #endif
 749     if (!gui_grab && ev->active.gain && qemu_console_is_graphic(NULL) &&
 750         (qemu_input_is_absolute() || absolute_enabled)) {
 751         absolute_mouse_grab();
 752     }
 753     if (ev->active.state & SDL_APPACTIVE) {
 754         if (ev->active.gain) {
 755             /* Back to default interval */
 756             update_displaychangelistener(dcl, GUI_REFRESH_INTERVAL_DEFAULT);
 757         } else {
 758             /* Sleeping interval.  Not using the long default here as
 759              * sdl_refresh does not only update the guest screen, but
 760              * also checks for gui events. */
 761             update_displaychangelistener(dcl, 500);
 762         }
 763     }
 764 }
 765
 766 static void sdl_refresh(DisplayChangeListener *dcl)
 767 {
 768     SDL_Event ev1, *ev = &ev1;
 769     int idle = 1;
 770
 771     if (last_vm_running != runstate_is_running()) {
 772         last_vm_running = runstate_is_running();
 773         sdl_update_caption();
 774     }
 775
 776     graphic_hw_update(NULL);
 777     SDL_EnableUNICODE(!qemu_console_is_graphic(NULL));
 778
 779     while (SDL_PollEvent(ev)) {
 780         switch (ev->type) {
 781         case SDL_VIDEOEXPOSE:
 782             sdl_update(dcl, 0, 0, real_screen->w, real_screen->h);
 783             break;
 784         case SDL_KEYDOWN:
 785             idle = 0;
 786             handle_keydown(ev);
 787             break;
 788         case SDL_KEYUP:
 789             idle = 0;
 790             handle_keyup(ev);
 791             break;
 792         case SDL_QUIT:
 793             if (!no_quit) {
 794                 no_shutdown = 0;
 795                 qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_UI);
 796             }
 797             break;
 798         case SDL_MOUSEMOTION:
 799             idle = 0;
 800             handle_mousemotion(ev);
 801             break;
 802         case SDL_MOUSEBUTTONDOWN:
 803         case SDL_MOUSEBUTTONUP:
 804             idle = 0;
 805             handle_mousebutton(ev);
 806             break;
 807         case SDL_ACTIVEEVENT:
 808             handle_activation(ev);
 809             break;
 810         case SDL_VIDEORESIZE:
 811             sdl_scale(ev->resize.w, ev->resize.h);
 812             graphic_hw_invalidate(NULL);
 813             graphic_hw_update(NULL);
 814             break;
 815         default:
 816             break;
 817         }
 818     }
 819
 820     if (idle) {
 821         if (idle_counter < SDL_MAX_IDLE_COUNT) {
 822             idle_counter++;
 823             if (idle_counter >= SDL_MAX_IDLE_COUNT) {
 824                 dcl->update_interval = GUI_REFRESH_INTERVAL_DEFAULT;
 825             }
 826         }
 827     } else {
 828         idle_counter = 0;
 829         dcl->update_interval = SDL_REFRESH_INTERVAL_BUSY;
 830     }
 831 }
 832
 833 static void sdl_mouse_warp(DisplayChangeListener *dcl,
 834                            int x, int y, int on)
 835 {
 836     if (on) {
 837         if (!guest_cursor)
 838             sdl_show_cursor();
 839         if (gui_grab || qemu_input_is_absolute() || absolute_enabled) {
 840             SDL_SetCursor(guest_sprite);
 841             if (!qemu_input_is_absolute() && !absolute_enabled) {
 842                 SDL_WarpMouse(x, y);
 843             }
 844         }
 845     } else if (gui_grab)
 846         sdl_hide_cursor();
 847     guest_cursor = on;
 848     guest_x = x, guest_y = y;
 849 }
 850
 851 static void sdl_mouse_define(DisplayChangeListener *dcl,
 852                              QEMUCursor *c)
 853 {
 854     uint8_t *image, *mask;
 855     int bpl;
 856
 857     if (guest_sprite)
 858         SDL_FreeCursor(guest_sprite);
 859
 860     bpl = cursor_get_mono_bpl(c);
 861     image = g_malloc0(bpl * c->height);
 862     mask  = g_malloc0(bpl * c->height);
 863     cursor_get_mono_image(c, 0x000000, image);
 864     cursor_get_mono_mask(c, 0, mask);
 865     guest_sprite = SDL_CreateCursor(image, mask, c->width, c->height,
 866                                     c->hot_x, c->hot_y);
 867     g_free(image);
 868     g_free(mask);
 869
 870     if (guest_cursor &&
 871             (gui_grab || qemu_input_is_absolute() || absolute_enabled))
 872         SDL_SetCursor(guest_sprite);
 873 }
 874
 875 static void sdl_cleanup(void)
 876 {
 877     if (guest_sprite)
 878         SDL_FreeCursor(guest_sprite);
 879     SDL_QuitSubSystem(SDL_INIT_VIDEO);
 880 }
 881
 882 static const DisplayChangeListenerOps dcl_ops = {
 883     .dpy_name             = "sdl",
 884     .dpy_gfx_update       = sdl_update,
 885     .dpy_gfx_switch       = sdl_switch,
 886     .dpy_gfx_check_format = sdl_check_format,
 887     .dpy_refresh          = sdl_refresh,
 888     .dpy_mouse_set        = sdl_mouse_warp,
 889     .dpy_cursor_define    = sdl_mouse_define,
 890 };
 891
 892 void sdl_display_early_init(int opengl)
 893 {
 894     if (opengl == 1 /* on */) {
 895         fprintf(stderr,
 896                 "SDL1 display code has no opengl support.\n"
 897                 "Please recompile qemu with SDL2, using\n"
 898                 "./configure --enable-sdl --with-sdlabi=2.0\n");
 899     }
 900 }
 901
 902 void sdl_display_init(DisplayState *ds, int full_screen, int no_frame)
 903 {
 904     int flags;
 905     uint8_t data = 0;
 906     const SDL_VideoInfo *vi;
 907     SDL_SysWMinfo info;
 908     char *filename;
 909
 910 #if defined(__APPLE__)
 911     /* always use generic keymaps */
 912     if (!keyboard_layout)
 913         keyboard_layout = "en-us";
 914 #endif
 915     if(keyboard_layout) {
 916         kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
 917         if (!kbd_layout)
 918             exit(1);
 919     }
 920
 921     g_printerr("Running QEMU with SDL 1.2 is deprecated, and will be removed\n"
 922                "in a future release. Please switch to SDL 2.0 instead\n");
 923
 924     if (no_frame)
 925         gui_noframe = 1;
 926
 927     if (!full_screen) {
 928         setenv("SDL_VIDEO_ALLOW_SCREENSAVER", "1", 0);
 929     }
 930 #ifdef __linux__
 931     /* on Linux, SDL may use fbcon|directfb|svgalib when run without
 932      * accessible $DISPLAY to open X11 window.  This is often the case
 933      * when qemu is run using sudo.  But in this case, and when actually
 934      * run in X11 environment, SDL fights with X11 for the video card,
 935      * making current display unavailable, often until reboot.
 936      * So make x11 the default SDL video driver if this variable is unset.
 937      * This is a bit hackish but saves us from bigger problem.
 938      * Maybe it's a good idea to fix this in SDL instead.
 939      */
 940     setenv("SDL_VIDEODRIVER", "x11", 0);
 941 #endif
 942
 943     /* Enable normal up/down events for Caps-Lock and Num-Lock keys.
 944      * This requires SDL >= 1.2.14. */
 945     setenv("SDL_DISABLE_LOCK_KEYS", "1", 1);
 946
 947     flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
 948     if (SDL_Init (flags)) {
 949         fprintf(stderr, "Could not initialize SDL(%s) - exiting\n",
 950                 SDL_GetError());
 951         exit(1);
 952     }
 953     vi = SDL_GetVideoInfo();
 954     host_format = *(vi->vfmt);
 955
 956     keycode_map = sdl_get_keymap(&keycode_maplen);
 957
 958     /* Load a 32x32x4 image. White pixels are transparent. */
 959     filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, "qemu-icon.bmp");
 960     if (filename) {
 961         SDL_Surface *image = SDL_LoadBMP(filename);
 962         if (image) {
 963             uint32_t colorkey = SDL_MapRGB(image->format, 255, 255, 255);
 964             SDL_SetColorKey(image, SDL_SRCCOLORKEY, colorkey);
 965             SDL_WM_SetIcon(image, NULL);
 966         }
 967         g_free(filename);
 968     }
 969
 970     if (full_screen) {
 971         gui_fullscreen = 1;
 972         sdl_grab_start();
 973     }
 974
 975     dcl = g_new0(DisplayChangeListener, 1);
 976     dcl->ops = &dcl_ops;
 977     register_displaychangelistener(dcl);
 978
 979     mouse_mode_notifier.notify = sdl_mouse_mode_change;
 980     qemu_add_mouse_mode_change_notifier(&mouse_mode_notifier);
 981
 982     sdl_update_caption();
 983     SDL_EnableKeyRepeat(250, 50);
 984     gui_grab = 0;
 985
 986     sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
 987     sdl_cursor_normal = SDL_GetCursor();
 988
 989     memset(&info, 0, sizeof(info));
 990     SDL_VERSION(&info.version);
 991     if (SDL_GetWMInfo(&info)) {
 992         int i;
 993         for (i = 0; ; i++) {
 994             /* All consoles share the same window */
 995             QemuConsole *con = qemu_console_lookup_by_index(i);
 996             if (con) {
 997 #if defined(SDL_VIDEO_DRIVER_X11)
 998                 qemu_console_set_window_id(con, info.info.x11.wmwindow);
 999 #elif defined(SDL_VIDEO_DRIVER_NANOX) || \
1000       defined(SDL_VIDEO_DRIVER_WINDIB) || defined(SDL_VIDEO_DRIVER_DDRAW) || \
1001       defined(SDL_VIDEO_DRIVER_GAPI) || \
1002       defined(SDL_VIDEO_DRIVER_RISCOS)
1003                 qemu_console_set_window_id(con, (int) (uintptr_t) info.window);
1004 #else
1005                 qemu_console_set_window_id(con, info.data);
1006 #endif
1007             } else {
1008                 break;
1009             }
1010         }
1011     }
1012
1013     atexit(sdl_cleanup);
1014 }