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 DisplayOptions *opts;
  45 static SDL_Surface *real_screen;
  46 static SDL_Surface *guest_screen = NULL;
  47 static int gui_grab; /* if true, all keyboard/mouse events are grabbed */
  48 static int last_vm_running;
  49 static bool gui_saved_scaling;
  50 static int gui_saved_width;
  51 static int gui_saved_height;
  52 static int gui_saved_grab;
  53 static int gui_fullscreen;
  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 (no_frame) {
 122         flags |= SDL_NOFRAME;
 123     }
 124
 125     tmp_screen = SDL_SetVideoMode(width, height, bpp, flags);
 126     if (!real_screen) {
 127         if (!tmp_screen) {
 128             fprintf(stderr, "Could not open SDL display (%dx%dx%d): %s\n",
 129                     width, height, bpp, SDL_GetError());
 130             exit(1);
 131         }
 132     } else {
 133         /*
 134          * Revert to the previous video mode if the change of resizing or
 135          * resolution failed.
 136          */
 137         if (!tmp_screen) {
 138             fprintf(stderr, "Failed to set SDL display (%dx%dx%d): %s\n",
 139                     width, height, bpp, SDL_GetError());
 140             return;
 141         }
 142     }
 143
 144     real_screen = tmp_screen;
 145 }
 146
 147 static void sdl_switch(DisplayChangeListener *dcl,
 148                        DisplaySurface *new_surface)
 149 {
 150     PixelFormat pf;
 151
 152     /* temporary hack: allows to call sdl_switch to handle scaling changes */
 153     if (new_surface) {
 154         surface = new_surface;
 155     }
 156     pf = qemu_pixelformat_from_pixman(surface->format);
 157
 158     if (!scaling_active) {
 159         do_sdl_resize(surface_width(surface), surface_height(surface), 0);
 160     } else if (real_screen->format->BitsPerPixel !=
 161                surface_bits_per_pixel(surface)) {
 162         do_sdl_resize(real_screen->w, real_screen->h,
 163                       surface_bits_per_pixel(surface));
 164     }
 165
 166     if (guest_screen != NULL) {
 167         SDL_FreeSurface(guest_screen);
 168     }
 169
 170 #ifdef DEBUG_SDL
 171     printf("SDL: Creating surface with masks: %08x %08x %08x %08x\n",
 172            pf.rmask, pf.gmask, pf.bmask, pf.amask);
 173 #endif
 174
 175     guest_screen = SDL_CreateRGBSurfaceFrom
 176         (surface_data(surface),
 177          surface_width(surface), surface_height(surface),
 178          surface_bits_per_pixel(surface), surface_stride(surface),
 179          pf.rmask, pf.gmask,
 180          pf.bmask, pf.amask);
 181 }
 182
 183 static bool sdl_check_format(DisplayChangeListener *dcl,
 184                              pixman_format_code_t format)
 185 {
 186     /*
 187      * We let SDL convert for us a few more formats than,
 188      * the native ones. Thes are the ones I have tested.
 189      */
 190     return (format == PIXMAN_x8r8g8b8 ||
 191             format == PIXMAN_b8g8r8x8 ||
 192             format == PIXMAN_x1r5g5b5 ||
 193             format == PIXMAN_r5g6b5);
 194 }
 195
 196 /* generic keyboard conversion */
 197
 198 #include "sdl_keysym.h"
 199
 200 static kbd_layout_t *kbd_layout = NULL;
 201
 202 static uint8_t sdl_keyevent_to_keycode_generic(const SDL_KeyboardEvent *ev)
 203 {
 204     int keysym;
 205     /* workaround for X11+SDL bug with AltGR */
 206     keysym = ev->keysym.sym;
 207     if (keysym == 0 && ev->keysym.scancode == 113)
 208         keysym = SDLK_MODE;
 209     /* For Japanese key '\' and '|' */
 210     if (keysym == 92 && ev->keysym.scancode == 133) {
 211         keysym = 0xa5;
 212     }
 213     return keysym2scancode(kbd_layout, keysym) & SCANCODE_KEYMASK;
 214 }
 215
 216
 217 static const guint16 *sdl_get_keymap(size_t *maplen)
 218 {
 219 #if defined(WIN32)
 220     *maplen = qemu_input_map_atset1_to_qcode_len;
 221     return qemu_input_map_atset1_to_qcode;
 222 #else
 223 #if defined(SDL_VIDEO_DRIVER_X11)
 224     SDL_SysWMinfo info;
 225
 226     SDL_VERSION(&info.version);
 227     if (SDL_GetWMInfo(&info) > 0) {
 228         return qemu_xkeymap_mapping_table(
 229             info.info.x11.display, maplen);
 230     }
 231 #endif
 232     g_warning("Unsupported SDL video driver / platform.\n"
 233               "Assuming Linux KBD scancodes, but probably wrong.\n"
 234               "Please report to qemu-devel@nongnu.org\n"
 235               "including the following information:\n"
 236               "\n"
 237               "  - Operating system\n"
 238               "  - SDL video driver\n");
 239     *maplen = qemu_input_map_xorgkbd_to_qcode_len;
 240     return qemu_input_map_xorgkbd_to_qcode;
 241 #endif
 242 }
 243
 244 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 245 {
 246     int qcode;
 247     if (!keycode_map) {
 248         return 0;
 249     }
 250     if (ev->keysym.scancode > keycode_maplen) {
 251         return 0;
 252     }
 253
 254     qcode = keycode_map[ev->keysym.scancode];
 255
 256     if (qcode > qemu_input_map_qcode_to_qnum_len) {
 257         return 0;
 258     }
 259
 260     return qemu_input_map_qcode_to_qnum[qcode];
 261 }
 262
 263 static void reset_keys(void)
 264 {
 265     int i;
 266     for(i = 0; i < 256; i++) {
 267         if (modifiers_state[i]) {
 268             qemu_input_event_send_key_number(dcl->con, i, false);
 269             modifiers_state[i] = 0;
 270         }
 271     }
 272 }
 273
 274 static void sdl_process_key(SDL_KeyboardEvent *ev)
 275 {
 276     int keycode;
 277
 278     if (ev->keysym.sym == SDLK_PAUSE) {
 279         /* specific case */
 280         qemu_input_event_send_key_qcode(dcl->con, Q_KEY_CODE_PAUSE,
 281                                         ev->type == SDL_KEYDOWN);
 282         return;
 283     }
 284
 285     if (kbd_layout) {
 286         keycode = sdl_keyevent_to_keycode_generic(ev);
 287     } else {
 288         keycode = sdl_keyevent_to_keycode(ev);
 289     }
 290
 291     switch(keycode) {
 292     case 0x00:
 293         /* sent when leaving window: reset the modifiers state */
 294         reset_keys();
 295         return;
 296     case 0x2a:                          /* Left Shift */
 297     case 0x36:                          /* Right Shift */
 298     case 0x1d:                          /* Left CTRL */
 299     case 0x9d:                          /* Right CTRL */
 300     case 0x38:                          /* Left ALT */
 301     case 0xb8:                         /* Right ALT */
 302         if (ev->type == SDL_KEYUP)
 303             modifiers_state[keycode] = 0;
 304         else
 305             modifiers_state[keycode] = 1;
 306         break;
 307 #define QEMU_SDL_VERSION ((SDL_MAJOR_VERSION << 8) + SDL_MINOR_VERSION)
 308 #if QEMU_SDL_VERSION < 0x102 || QEMU_SDL_VERSION == 0x102 && SDL_PATCHLEVEL < 14
 309         /* SDL versions before 1.2.14 don't support key up for caps/num lock. */
 310     case 0x45: /* num lock */
 311     case 0x3a: /* caps lock */
 312         /* SDL does not send the key up event, so we generate it */
 313         qemu_input_event_send_key_number(dcl->con, keycode, true);
 314         qemu_input_event_send_key_number(dcl->con, keycode, false);
 315         return;
 316 #endif
 317     }
 318
 319     /* now send the key code */
 320     qemu_input_event_send_key_number(dcl->con, keycode,
 321                                      ev->type == SDL_KEYDOWN);
 322 }
 323
 324 static void sdl_update_caption(void)
 325 {
 326     char win_title[1024];
 327     char icon_title[1024];
 328     const char *status = "";
 329
 330     if (!runstate_is_running())
 331         status = " [Stopped]";
 332     else if (gui_grab) {
 333         if (alt_grab)
 334             status = " - Press Ctrl-Alt-Shift-G to exit mouse grab";
 335         else if (ctrl_grab)
 336             status = " - Press Right-Ctrl-G to exit mouse grab";
 337         else
 338             status = " - Press Ctrl-Alt-G to exit mouse grab";
 339     }
 340
 341     if (qemu_name) {
 342         snprintf(win_title, sizeof(win_title), "QEMU (%s)%s", qemu_name, status);
 343         snprintf(icon_title, sizeof(icon_title), "QEMU (%s)", qemu_name);
 344     } else {
 345         snprintf(win_title, sizeof(win_title), "QEMU%s", status);
 346         snprintf(icon_title, sizeof(icon_title), "QEMU");
 347     }
 348
 349     SDL_WM_SetCaption(win_title, icon_title);
 350 }
 351
 352 static void sdl_hide_cursor(void)
 353 {
 354     if (!cursor_hide)
 355         return;
 356
 357     if (qemu_input_is_absolute()) {
 358         SDL_ShowCursor(1);
 359         SDL_SetCursor(sdl_cursor_hidden);
 360     } else {
 361         SDL_ShowCursor(0);
 362     }
 363 }
 364
 365 static void sdl_show_cursor(void)
 366 {
 367     if (!cursor_hide)
 368         return;
 369
 370     if (!qemu_input_is_absolute() || !qemu_console_is_graphic(NULL)) {
 371         SDL_ShowCursor(1);
 372         if (guest_cursor &&
 373                 (gui_grab || qemu_input_is_absolute() || absolute_enabled))
 374             SDL_SetCursor(guest_sprite);
 375         else
 376             SDL_SetCursor(sdl_cursor_normal);
 377     }
 378 }
 379
 380 static void sdl_grab_start(void)
 381 {
 382     /*
 383      * If the application is not active, do not try to enter grab state. This
 384      * prevents 'SDL_WM_GrabInput(SDL_GRAB_ON)' from blocking all the
 385      * application (SDL bug).
 386      */
 387     if (!(SDL_GetAppState() & SDL_APPINPUTFOCUS)) {
 388         return;
 389     }
 390     if (guest_cursor) {
 391         SDL_SetCursor(guest_sprite);
 392         if (!qemu_input_is_absolute() && !absolute_enabled) {
 393             SDL_WarpMouse(guest_x, guest_y);
 394         }
 395     } else
 396         sdl_hide_cursor();
 397     SDL_WM_GrabInput(SDL_GRAB_ON);
 398     gui_grab = 1;
 399     sdl_update_caption();
 400 }
 401
 402 static void sdl_grab_end(void)
 403 {
 404     SDL_WM_GrabInput(SDL_GRAB_OFF);
 405     gui_grab = 0;
 406     sdl_show_cursor();
 407     sdl_update_caption();
 408 }
 409
 410 static void absolute_mouse_grab(void)
 411 {
 412     int mouse_x, mouse_y;
 413
 414     SDL_GetMouseState(&mouse_x, &mouse_y);
 415     if (mouse_x > 0 && mouse_x < real_screen->w - 1 &&
 416         mouse_y > 0 && mouse_y < real_screen->h - 1) {
 417         sdl_grab_start();
 418     }
 419 }
 420
 421 static void sdl_mouse_mode_change(Notifier *notify, void *data)
 422 {
 423     if (qemu_input_is_absolute()) {
 424         if (!absolute_enabled) {
 425             absolute_enabled = 1;
 426             if (qemu_console_is_graphic(NULL)) {
 427                 absolute_mouse_grab();
 428             }
 429         }
 430     } else if (absolute_enabled) {
 431         if (!gui_fullscreen) {
 432             sdl_grab_end();
 433         }
 434         absolute_enabled = 0;
 435     }
 436 }
 437
 438 static void sdl_send_mouse_event(int dx, int dy, int x, int y, int state)
 439 {
 440     static uint32_t bmap[INPUT_BUTTON__MAX] = {
 441         [INPUT_BUTTON_LEFT]       = SDL_BUTTON(SDL_BUTTON_LEFT),
 442         [INPUT_BUTTON_MIDDLE]     = SDL_BUTTON(SDL_BUTTON_MIDDLE),
 443         [INPUT_BUTTON_RIGHT]      = SDL_BUTTON(SDL_BUTTON_RIGHT),
 444         [INPUT_BUTTON_WHEEL_UP]   = SDL_BUTTON(SDL_BUTTON_WHEELUP),
 445         [INPUT_BUTTON_WHEEL_DOWN] = SDL_BUTTON(SDL_BUTTON_WHEELDOWN),
 446     };
 447     static uint32_t prev_state;
 448
 449     if (prev_state != state) {
 450         qemu_input_update_buttons(dcl->con, bmap, prev_state, state);
 451         prev_state = state;
 452     }
 453
 454     if (qemu_input_is_absolute()) {
 455         qemu_input_queue_abs(dcl->con, INPUT_AXIS_X, x,
 456                              0, real_screen->w);
 457         qemu_input_queue_abs(dcl->con, INPUT_AXIS_Y, y,
 458                              0, real_screen->h);
 459     } else {
 460         if (guest_cursor) {
 461             x -= guest_x;
 462             y -= guest_y;
 463             guest_x += x;
 464             guest_y += y;
 465             dx = x;
 466             dy = y;
 467         }
 468         qemu_input_queue_rel(dcl->con, INPUT_AXIS_X, dx);
 469         qemu_input_queue_rel(dcl->con, INPUT_AXIS_Y, dy);
 470     }
 471     qemu_input_event_sync();
 472 }
 473
 474 static void sdl_scale(int width, int height)
 475 {
 476     int bpp = real_screen->format->BitsPerPixel;
 477
 478 #ifdef DEBUG_SDL
 479     printf("SDL: Scaling to %dx%d bpp %d\n", width, height, bpp);
 480 #endif
 481
 482     if (bpp != 16 && bpp != 32) {
 483         bpp = 32;
 484     }
 485     do_sdl_resize(width, height, bpp);
 486     scaling_active = 1;
 487 }
 488
 489 static void toggle_full_screen(void)
 490 {
 491     int width = surface_width(surface);
 492     int height = surface_height(surface);
 493     int bpp = surface_bits_per_pixel(surface);
 494
 495     gui_fullscreen = !gui_fullscreen;
 496     if (gui_fullscreen) {
 497         gui_saved_width = real_screen->w;
 498         gui_saved_height = real_screen->h;
 499         gui_saved_scaling = scaling_active;
 500
 501         do_sdl_resize(width, height, bpp);
 502         scaling_active = 0;
 503
 504         gui_saved_grab = gui_grab;
 505         sdl_grab_start();
 506     } else {
 507         if (gui_saved_scaling) {
 508             sdl_scale(gui_saved_width, gui_saved_height);
 509         } else {
 510             do_sdl_resize(width, height, 0);
 511         }
 512         if (!gui_saved_grab || !qemu_console_is_graphic(NULL)) {
 513             sdl_grab_end();
 514         }
 515     }
 516     graphic_hw_invalidate(NULL);
 517     graphic_hw_update(NULL);
 518 }
 519
 520 static void handle_keydown(SDL_Event *ev)
 521 {
 522     int mod_state;
 523     int keycode;
 524
 525     if (alt_grab) {
 526         mod_state = (SDL_GetModState() & (gui_grab_code | KMOD_LSHIFT)) ==
 527                     (gui_grab_code | KMOD_LSHIFT);
 528     } else if (ctrl_grab) {
 529         mod_state = (SDL_GetModState() & KMOD_RCTRL) == KMOD_RCTRL;
 530     } else {
 531         mod_state = (SDL_GetModState() & gui_grab_code) == gui_grab_code;
 532     }
 533     gui_key_modifier_pressed = mod_state;
 534
 535     if (gui_key_modifier_pressed) {
 536         keycode = sdl_keyevent_to_keycode(&ev->key);
 537         switch (keycode) {
 538         case 0x21: /* 'f' key on US keyboard */
 539             toggle_full_screen();
 540             gui_keysym = 1;
 541             break;
 542         case 0x22: /* 'g' key */
 543             if (!gui_grab) {
 544                 if (qemu_console_is_graphic(NULL)) {
 545                     sdl_grab_start();
 546                 }
 547             } else if (!gui_fullscreen) {
 548                 sdl_grab_end();
 549             }
 550             gui_keysym = 1;
 551             break;
 552         case 0x16: /* 'u' key on US keyboard */
 553             if (scaling_active) {
 554                 scaling_active = 0;
 555                 sdl_switch(dcl, NULL);
 556                 graphic_hw_invalidate(NULL);
 557                 graphic_hw_update(NULL);
 558             }
 559             gui_keysym = 1;
 560             break;
 561         case 0x02 ... 0x0a: /* '1' to '9' keys */
 562             /* Reset the modifiers sent to the current console */
 563             reset_keys();
 564             console_select(keycode - 0x02);
 565             gui_keysym = 1;
 566             if (gui_fullscreen) {
 567                 break;
 568             }
 569             if (!qemu_console_is_graphic(NULL)) {
 570                 /* release grab if going to a text console */
 571                 if (gui_grab) {
 572                     sdl_grab_end();
 573                 } else if (absolute_enabled) {
 574                     sdl_show_cursor();
 575                 }
 576             } else if (absolute_enabled) {
 577                 sdl_hide_cursor();
 578                 absolute_mouse_grab();
 579             }
 580             break;
 581         case 0x1b: /* '+' */
 582         case 0x35: /* '-' */
 583             if (!gui_fullscreen) {
 584                 int width = MAX(real_screen->w + (keycode == 0x1b ? 50 : -50),
 585                                 160);
 586                 int height = (surface_height(surface) * width) /
 587                     surface_width(surface);
 588
 589                 sdl_scale(width, height);
 590                 graphic_hw_invalidate(NULL);
 591                 graphic_hw_update(NULL);
 592                 gui_keysym = 1;
 593             }
 594         default:
 595             break;
 596         }
 597     } else if (!qemu_console_is_graphic(NULL)) {
 598         int keysym = 0;
 599
 600         if (ev->key.keysym.mod & (KMOD_LCTRL | KMOD_RCTRL)) {
 601             switch (ev->key.keysym.sym) {
 602             case SDLK_UP:
 603                 keysym = QEMU_KEY_CTRL_UP;
 604                 break;
 605             case SDLK_DOWN:
 606                 keysym = QEMU_KEY_CTRL_DOWN;
 607                 break;
 608             case SDLK_LEFT:
 609                 keysym = QEMU_KEY_CTRL_LEFT;
 610                 break;
 611             case SDLK_RIGHT:
 612                 keysym = QEMU_KEY_CTRL_RIGHT;
 613                 break;
 614             case SDLK_HOME:
 615                 keysym = QEMU_KEY_CTRL_HOME;
 616                 break;
 617             case SDLK_END:
 618                 keysym = QEMU_KEY_CTRL_END;
 619                 break;
 620             case SDLK_PAGEUP:
 621                 keysym = QEMU_KEY_CTRL_PAGEUP;
 622                 break;
 623             case SDLK_PAGEDOWN:
 624                 keysym = QEMU_KEY_CTRL_PAGEDOWN;
 625                 break;
 626             default:
 627                 break;
 628             }
 629         } else {
 630             switch (ev->key.keysym.sym) {
 631             case SDLK_UP:
 632                 keysym = QEMU_KEY_UP;
 633                 break;
 634             case SDLK_DOWN:
 635                 keysym = QEMU_KEY_DOWN;
 636                 break;
 637             case SDLK_LEFT:
 638                 keysym = QEMU_KEY_LEFT;
 639                 break;
 640             case SDLK_RIGHT:
 641                 keysym = QEMU_KEY_RIGHT;
 642                 break;
 643             case SDLK_HOME:
 644                 keysym = QEMU_KEY_HOME;
 645                 break;
 646             case SDLK_END:
 647                 keysym = QEMU_KEY_END;
 648                 break;
 649             case SDLK_PAGEUP:
 650                 keysym = QEMU_KEY_PAGEUP;
 651                 break;
 652             case SDLK_PAGEDOWN:
 653                 keysym = QEMU_KEY_PAGEDOWN;
 654                 break;
 655             case SDLK_BACKSPACE:
 656                 keysym = QEMU_KEY_BACKSPACE;
 657                 break;
 658             case SDLK_DELETE:
 659                 keysym = QEMU_KEY_DELETE;
 660                 break;
 661             default:
 662                 break;
 663             }
 664         }
 665         if (keysym) {
 666             kbd_put_keysym(keysym);
 667         } else if (ev->key.keysym.unicode != 0) {
 668             kbd_put_keysym(ev->key.keysym.unicode);
 669         }
 670     }
 671     if (qemu_console_is_graphic(NULL) && !gui_keysym) {
 672         sdl_process_key(&ev->key);
 673     }
 674 }
 675
 676 static void handle_keyup(SDL_Event *ev)
 677 {
 678     int mod_state;
 679
 680     if (!alt_grab) {
 681         mod_state = (ev->key.keysym.mod & gui_grab_code);
 682     } else {
 683         mod_state = (ev->key.keysym.mod & (gui_grab_code | KMOD_LSHIFT));
 684     }
 685     if (!mod_state && gui_key_modifier_pressed) {
 686         gui_key_modifier_pressed = 0;
 687         gui_keysym = 0;
 688     }
 689     if (qemu_console_is_graphic(NULL) && !gui_keysym) {
 690         sdl_process_key(&ev->key);
 691     }
 692 }
 693
 694 static void handle_mousemotion(SDL_Event *ev)
 695 {
 696     int max_x, max_y;
 697
 698     if (qemu_console_is_graphic(NULL) &&
 699         (qemu_input_is_absolute() || absolute_enabled)) {
 700         max_x = real_screen->w - 1;
 701         max_y = real_screen->h - 1;
 702         if (gui_grab && (ev->motion.x == 0 || ev->motion.y == 0 ||
 703             ev->motion.x == max_x || ev->motion.y == max_y)) {
 704             sdl_grab_end();
 705         }
 706         if (!gui_grab &&
 707             (ev->motion.x > 0 && ev->motion.x < max_x &&
 708             ev->motion.y > 0 && ev->motion.y < max_y)) {
 709             sdl_grab_start();
 710         }
 711     }
 712     if (gui_grab || qemu_input_is_absolute() || absolute_enabled) {
 713         sdl_send_mouse_event(ev->motion.xrel, ev->motion.yrel,
 714                              ev->motion.x, ev->motion.y, ev->motion.state);
 715     }
 716 }
 717
 718 static void handle_mousebutton(SDL_Event *ev)
 719 {
 720     int buttonstate = SDL_GetMouseState(NULL, NULL);
 721     SDL_MouseButtonEvent *bev;
 722
 723     if (!qemu_console_is_graphic(NULL)) {
 724         return;
 725     }
 726
 727     bev = &ev->button;
 728     if (!gui_grab && !qemu_input_is_absolute()) {
 729         if (ev->type == SDL_MOUSEBUTTONUP && bev->button == SDL_BUTTON_LEFT) {
 730             /* start grabbing all events */
 731             sdl_grab_start();
 732         }
 733     } else {
 734         if (ev->type == SDL_MOUSEBUTTONDOWN) {
 735             buttonstate |= SDL_BUTTON(bev->button);
 736         } else {
 737             buttonstate &= ~SDL_BUTTON(bev->button);
 738         }
 739         sdl_send_mouse_event(0, 0, bev->x, bev->y, buttonstate);
 740     }
 741 }
 742
 743 static void handle_activation(SDL_Event *ev)
 744 {
 745 #ifdef _WIN32
 746     /* Disable grab if the window no longer has the focus
 747      * (Windows-only workaround) */
 748     if (gui_grab && ev->active.state == SDL_APPINPUTFOCUS &&
 749         !ev->active.gain && !gui_fullscreen) {
 750         sdl_grab_end();
 751     }
 752 #endif
 753     if (!gui_grab && ev->active.gain && qemu_console_is_graphic(NULL) &&
 754         (qemu_input_is_absolute() || absolute_enabled)) {
 755         absolute_mouse_grab();
 756     }
 757     if (ev->active.state & SDL_APPACTIVE) {
 758         if (ev->active.gain) {
 759             /* Back to default interval */
 760             update_displaychangelistener(dcl, GUI_REFRESH_INTERVAL_DEFAULT);
 761         } else {
 762             /* Sleeping interval.  Not using the long default here as
 763              * sdl_refresh does not only update the guest screen, but
 764              * also checks for gui events. */
 765             update_displaychangelistener(dcl, 500);
 766         }
 767     }
 768 }
 769
 770 static void sdl_refresh(DisplayChangeListener *dcl)
 771 {
 772     SDL_Event ev1, *ev = &ev1;
 773     bool allow_close = true;
 774     int idle = 1;
 775
 776     if (last_vm_running != runstate_is_running()) {
 777         last_vm_running = runstate_is_running();
 778         sdl_update_caption();
 779     }
 780
 781     graphic_hw_update(NULL);
 782     SDL_EnableUNICODE(!qemu_console_is_graphic(NULL));
 783
 784     while (SDL_PollEvent(ev)) {
 785         switch (ev->type) {
 786         case SDL_VIDEOEXPOSE:
 787             sdl_update(dcl, 0, 0, real_screen->w, real_screen->h);
 788             break;
 789         case SDL_KEYDOWN:
 790             idle = 0;
 791             handle_keydown(ev);
 792             break;
 793         case SDL_KEYUP:
 794             idle = 0;
 795             handle_keyup(ev);
 796             break;
 797         case SDL_QUIT:
 798             if (opts->has_window_close && !opts->window_close) {
 799                 allow_close = false;
 800             }
 801             if (allow_close) {
 802                 no_shutdown = 0;
 803                 qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_UI);
 804             }
 805             break;
 806         case SDL_MOUSEMOTION:
 807             idle = 0;
 808             handle_mousemotion(ev);
 809             break;
 810         case SDL_MOUSEBUTTONDOWN:
 811         case SDL_MOUSEBUTTONUP:
 812             idle = 0;
 813             handle_mousebutton(ev);
 814             break;
 815         case SDL_ACTIVEEVENT:
 816             handle_activation(ev);
 817             break;
 818         case SDL_VIDEORESIZE:
 819             sdl_scale(ev->resize.w, ev->resize.h);
 820             graphic_hw_invalidate(NULL);
 821             graphic_hw_update(NULL);
 822             break;
 823         default:
 824             break;
 825         }
 826     }
 827
 828     if (idle) {
 829         if (idle_counter < SDL_MAX_IDLE_COUNT) {
 830             idle_counter++;
 831             if (idle_counter >= SDL_MAX_IDLE_COUNT) {
 832                 dcl->update_interval = GUI_REFRESH_INTERVAL_DEFAULT;
 833             }
 834         }
 835     } else {
 836         idle_counter = 0;
 837         dcl->update_interval = SDL_REFRESH_INTERVAL_BUSY;
 838     }
 839 }
 840
 841 static void sdl_mouse_warp(DisplayChangeListener *dcl,
 842                            int x, int y, int on)
 843 {
 844     if (on) {
 845         if (!guest_cursor)
 846             sdl_show_cursor();
 847         if (gui_grab || qemu_input_is_absolute() || absolute_enabled) {
 848             SDL_SetCursor(guest_sprite);
 849             if (!qemu_input_is_absolute() && !absolute_enabled) {
 850                 SDL_WarpMouse(x, y);
 851             }
 852         }
 853     } else if (gui_grab)
 854         sdl_hide_cursor();
 855     guest_cursor = on;
 856     guest_x = x, guest_y = y;
 857 }
 858
 859 static void sdl_mouse_define(DisplayChangeListener *dcl,
 860                              QEMUCursor *c)
 861 {
 862     uint8_t *image, *mask;
 863     int bpl;
 864
 865     if (guest_sprite)
 866         SDL_FreeCursor(guest_sprite);
 867
 868     bpl = cursor_get_mono_bpl(c);
 869     image = g_malloc0(bpl * c->height);
 870     mask  = g_malloc0(bpl * c->height);
 871     cursor_get_mono_image(c, 0x000000, image);
 872     cursor_get_mono_mask(c, 0, mask);
 873     guest_sprite = SDL_CreateCursor(image, mask, c->width, c->height,
 874                                     c->hot_x, c->hot_y);
 875     g_free(image);
 876     g_free(mask);
 877
 878     if (guest_cursor &&
 879             (gui_grab || qemu_input_is_absolute() || absolute_enabled))
 880         SDL_SetCursor(guest_sprite);
 881 }
 882
 883 static void sdl_cleanup(void)
 884 {
 885     if (guest_sprite)
 886         SDL_FreeCursor(guest_sprite);
 887     SDL_QuitSubSystem(SDL_INIT_VIDEO);
 888 }
 889
 890 static const DisplayChangeListenerOps dcl_ops = {
 891     .dpy_name             = "sdl",
 892     .dpy_gfx_update       = sdl_update,
 893     .dpy_gfx_switch       = sdl_switch,
 894     .dpy_gfx_check_format = sdl_check_format,
 895     .dpy_refresh          = sdl_refresh,
 896     .dpy_mouse_set        = sdl_mouse_warp,
 897     .dpy_cursor_define    = sdl_mouse_define,
 898 };
 899
 900 void sdl_display_early_init(DisplayOptions *opts)
 901 {
 902     if (opts->has_gl && opts->gl) {
 903         fprintf(stderr,
 904                 "SDL1 display code has no opengl support.\n"
 905                 "Please recompile qemu with SDL2, using\n"
 906                 "./configure --enable-sdl --with-sdlabi=2.0\n");
 907     }
 908 }
 909
 910 void sdl_display_init(DisplayState *ds, DisplayOptions *o)
 911 {
 912     int flags;
 913     uint8_t data = 0;
 914     const SDL_VideoInfo *vi;
 915     SDL_SysWMinfo info;
 916     char *filename;
 917
 918     assert(o->type == DISPLAY_TYPE_SDL);
 919     opts = o;
 920 #if defined(__APPLE__)
 921     /* always use generic keymaps */
 922     if (!keyboard_layout)
 923         keyboard_layout = "en-us";
 924 #endif
 925     if(keyboard_layout) {
 926         kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
 927         if (!kbd_layout)
 928             exit(1);
 929     }
 930
 931     g_printerr("Running QEMU with SDL 1.2 is deprecated, and will be removed\n"
 932                "in a future release. Please switch to SDL 2.0 instead\n");
 933
 934     if (opts->has_full_screen && opts->full_screen) {
 935         setenv("SDL_VIDEO_ALLOW_SCREENSAVER", "1", 0);
 936     }
 937 #ifdef __linux__
 938     /* on Linux, SDL may use fbcon|directfb|svgalib when run without
 939      * accessible $DISPLAY to open X11 window.  This is often the case
 940      * when qemu is run using sudo.  But in this case, and when actually
 941      * run in X11 environment, SDL fights with X11 for the video card,
 942      * making current display unavailable, often until reboot.
 943      * So make x11 the default SDL video driver if this variable is unset.
 944      * This is a bit hackish but saves us from bigger problem.
 945      * Maybe it's a good idea to fix this in SDL instead.
 946      */
 947     setenv("SDL_VIDEODRIVER", "x11", 0);
 948 #endif
 949
 950     /* Enable normal up/down events for Caps-Lock and Num-Lock keys.
 951      * This requires SDL >= 1.2.14. */
 952     setenv("SDL_DISABLE_LOCK_KEYS", "1", 1);
 953
 954     flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
 955     if (SDL_Init (flags)) {
 956         fprintf(stderr, "Could not initialize SDL(%s) - exiting\n",
 957                 SDL_GetError());
 958         exit(1);
 959     }
 960     vi = SDL_GetVideoInfo();
 961     host_format = *(vi->vfmt);
 962
 963     keycode_map = sdl_get_keymap(&keycode_maplen);
 964
 965     /* Load a 32x32x4 image. White pixels are transparent. */
 966     filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, "qemu-icon.bmp");
 967     if (filename) {
 968         SDL_Surface *image = SDL_LoadBMP(filename);
 969         if (image) {
 970             uint32_t colorkey = SDL_MapRGB(image->format, 255, 255, 255);
 971             SDL_SetColorKey(image, SDL_SRCCOLORKEY, colorkey);
 972             SDL_WM_SetIcon(image, NULL);
 973         }
 974         g_free(filename);
 975     }
 976
 977     if (opts->has_full_screen && opts->full_screen) {
 978         gui_fullscreen = 1;
 979         sdl_grab_start();
 980     }
 981
 982     dcl = g_new0(DisplayChangeListener, 1);
 983     dcl->ops = &dcl_ops;
 984     register_displaychangelistener(dcl);
 985
 986     mouse_mode_notifier.notify = sdl_mouse_mode_change;
 987     qemu_add_mouse_mode_change_notifier(&mouse_mode_notifier);
 988
 989     sdl_update_caption();
 990     SDL_EnableKeyRepeat(250, 50);
 991     gui_grab = 0;
 992
 993     sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
 994     sdl_cursor_normal = SDL_GetCursor();
 995
 996     memset(&info, 0, sizeof(info));
 997     SDL_VERSION(&info.version);
 998     if (SDL_GetWMInfo(&info)) {
 999         int i;
1000         for (i = 0; ; i++) {
1001             /* All consoles share the same window */
1002             QemuConsole *con = qemu_console_lookup_by_index(i);
1003             if (con) {
1004 #if defined(SDL_VIDEO_DRIVER_X11)
1005                 qemu_console_set_window_id(con, info.info.x11.wmwindow);
1006 #elif defined(SDL_VIDEO_DRIVER_NANOX) || \
1007       defined(SDL_VIDEO_DRIVER_WINDIB) || defined(SDL_VIDEO_DRIVER_DDRAW) || \
1008       defined(SDL_VIDEO_DRIVER_GAPI) || \
1009       defined(SDL_VIDEO_DRIVER_RISCOS)
1010                 qemu_console_set_window_id(con, (int) (uintptr_t) info.window);
1011 #else
1012                 qemu_console_set_window_id(con, info.data);
1013 #endif
1014             } else {
1015                 break;
1016             }
1017         }
1018     }
1019
1020     atexit(sdl_cleanup);
1021 }