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_key_modifier_pressed;
  54 static int gui_keysym;
  55 static int gui_grab_code = KMOD_LALT | KMOD_LCTRL;
  56 static uint8_t modifiers_state[256];
  57 static SDL_Cursor *sdl_cursor_normal;
  58 static SDL_Cursor *sdl_cursor_hidden;
  59 static int absolute_enabled = 0;
  60 static int guest_cursor = 0;
  61 static int guest_x, guest_y;
  62 static SDL_Cursor *guest_sprite = NULL;
  63 static SDL_PixelFormat host_format;
  64 static int scaling_active = 0;
  65 static Notifier mouse_mode_notifier;
  66 static int idle_counter;
  67 static const guint16 *keycode_map;
  68 static size_t keycode_maplen;
  69
  70 #define SDL_REFRESH_INTERVAL_BUSY 10
  71 #define SDL_MAX_IDLE_COUNT (2 * GUI_REFRESH_INTERVAL_DEFAULT \
  72                             / SDL_REFRESH_INTERVAL_BUSY + 1)
  73
  74 #if 0
  75 #define DEBUG_SDL
  76 #endif
  77
  78 static void sdl_update(DisplayChangeListener *dcl,
  79                        int x, int y, int w, int h)
  80 {
  81     SDL_Rect rec;
  82     rec.x = x;
  83     rec.y = y;
  84     rec.w = w;
  85     rec.h = h;
  86
  87 #ifdef DEBUG_SDL
  88     printf("SDL: Updating x=%d y=%d w=%d h=%d (scaling: %d)\n",
  89            x, y, w, h, scaling_active);
  90 #endif
  91
  92     if (guest_screen) {
  93         if (!scaling_active) {
  94             SDL_BlitSurface(guest_screen, &rec, real_screen, &rec);
  95         } else {
  96             if (sdl_zoom_blit(guest_screen, real_screen, SMOOTHING_ON, &rec) < 0) {
  97                 fprintf(stderr, "Zoom blit failed\n");
  98                 exit(1);
  99             }
 100         }
 101     }
 102     SDL_UpdateRect(real_screen, rec.x, rec.y, rec.w, rec.h);
 103 }
 104
 105 static void do_sdl_resize(int width, int height, int bpp)
 106 {
 107     int flags;
 108     SDL_Surface *tmp_screen;
 109
 110 #ifdef DEBUG_SDL
 111     printf("SDL: Resizing to %dx%d bpp %d\n", width, height, bpp);
 112 #endif
 113
 114     flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
 115     if (gui_fullscreen) {
 116         flags |= SDL_FULLSCREEN;
 117     } else {
 118         flags |= SDL_RESIZABLE;
 119     }
 120     if (no_frame) {
 121         flags |= SDL_NOFRAME;
 122     }
 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     int qcode;
 246     if (!keycode_map) {
 247         return 0;
 248     }
 249     if (ev->keysym.scancode > keycode_maplen) {
 250         return 0;
 251     }
 252
 253     qcode = keycode_map[ev->keysym.scancode];
 254
 255     if (qcode > qemu_input_map_qcode_to_qnum_len) {
 256         return 0;
 257     }
 258
 259     return qemu_input_map_qcode_to_qnum[qcode];
 260 }
 261
 262 static void reset_keys(void)
 263 {
 264     int i;
 265     for(i = 0; i < 256; i++) {
 266         if (modifiers_state[i]) {
 267             qemu_input_event_send_key_number(dcl->con, i, false);
 268             modifiers_state[i] = 0;
 269         }
 270     }
 271 }
 272
 273 static void sdl_process_key(SDL_KeyboardEvent *ev)
 274 {
 275     int keycode;
 276
 277     if (ev->keysym.sym == SDLK_PAUSE) {
 278         /* specific case */
 279         qemu_input_event_send_key_qcode(dcl->con, Q_KEY_CODE_PAUSE,
 280                                         ev->type == SDL_KEYDOWN);
 281         return;
 282     }
 283
 284     if (kbd_layout) {
 285         keycode = sdl_keyevent_to_keycode_generic(ev);
 286     } else {
 287         keycode = sdl_keyevent_to_keycode(ev);
 288     }
 289
 290     switch(keycode) {
 291     case 0x00:
 292         /* sent when leaving window: reset the modifiers state */
 293         reset_keys();
 294         return;
 295     case 0x2a:                          /* Left Shift */
 296     case 0x36:                          /* Right Shift */
 297     case 0x1d:                          /* Left CTRL */
 298     case 0x9d:                          /* Right CTRL */
 299     case 0x38:                          /* Left ALT */
 300     case 0xb8:                         /* Right ALT */
 301         if (ev->type == SDL_KEYUP)
 302             modifiers_state[keycode] = 0;
 303         else
 304             modifiers_state[keycode] = 1;
 305         break;
 306 #define QEMU_SDL_VERSION ((SDL_MAJOR_VERSION << 8) + SDL_MINOR_VERSION)
 307 #if QEMU_SDL_VERSION < 0x102 || QEMU_SDL_VERSION == 0x102 && SDL_PATCHLEVEL < 14
 308         /* SDL versions before 1.2.14 don't support key up for caps/num lock. */
 309     case 0x45: /* num lock */
 310     case 0x3a: /* caps lock */
 311         /* SDL does not send the key up event, so we generate it */
 312         qemu_input_event_send_key_number(dcl->con, keycode, true);
 313         qemu_input_event_send_key_number(dcl->con, keycode, false);
 314         return;
 315 #endif
 316     }
 317
 318     /* now send the key code */
 319     qemu_input_event_send_key_number(dcl->con, keycode,
 320                                      ev->type == SDL_KEYDOWN);
 321 }
 322
 323 static void sdl_update_caption(void)
 324 {
 325     char win_title[1024];
 326     char icon_title[1024];
 327     const char *status = "";
 328
 329     if (!runstate_is_running())
 330         status = " [Stopped]";
 331     else if (gui_grab) {
 332         if (alt_grab)
 333             status = " - Press Ctrl-Alt-Shift-G to exit mouse grab";
 334         else if (ctrl_grab)
 335             status = " - Press Right-Ctrl-G to exit mouse grab";
 336         else
 337             status = " - Press Ctrl-Alt-G to exit mouse grab";
 338     }
 339
 340     if (qemu_name) {
 341         snprintf(win_title, sizeof(win_title), "QEMU (%s)%s", qemu_name, status);
 342         snprintf(icon_title, sizeof(icon_title), "QEMU (%s)", qemu_name);
 343     } else {
 344         snprintf(win_title, sizeof(win_title), "QEMU%s", status);
 345         snprintf(icon_title, sizeof(icon_title), "QEMU");
 346     }
 347
 348     SDL_WM_SetCaption(win_title, icon_title);
 349 }
 350
 351 static void sdl_hide_cursor(void)
 352 {
 353     if (!cursor_hide)
 354         return;
 355
 356     if (qemu_input_is_absolute()) {
 357         SDL_ShowCursor(1);
 358         SDL_SetCursor(sdl_cursor_hidden);
 359     } else {
 360         SDL_ShowCursor(0);
 361     }
 362 }
 363
 364 static void sdl_show_cursor(void)
 365 {
 366     if (!cursor_hide)
 367         return;
 368
 369     if (!qemu_input_is_absolute() || !qemu_console_is_graphic(NULL)) {
 370         SDL_ShowCursor(1);
 371         if (guest_cursor &&
 372                 (gui_grab || qemu_input_is_absolute() || absolute_enabled))
 373             SDL_SetCursor(guest_sprite);
 374         else
 375             SDL_SetCursor(sdl_cursor_normal);
 376     }
 377 }
 378
 379 static void sdl_grab_start(void)
 380 {
 381     /*
 382      * If the application is not active, do not try to enter grab state. This
 383      * prevents 'SDL_WM_GrabInput(SDL_GRAB_ON)' from blocking all the
 384      * application (SDL bug).
 385      */
 386     if (!(SDL_GetAppState() & SDL_APPINPUTFOCUS)) {
 387         return;
 388     }
 389     if (guest_cursor) {
 390         SDL_SetCursor(guest_sprite);
 391         if (!qemu_input_is_absolute() && !absolute_enabled) {
 392             SDL_WarpMouse(guest_x, guest_y);
 393         }
 394     } else
 395         sdl_hide_cursor();
 396     SDL_WM_GrabInput(SDL_GRAB_ON);
 397     gui_grab = 1;
 398     sdl_update_caption();
 399 }
 400
 401 static void sdl_grab_end(void)
 402 {
 403     SDL_WM_GrabInput(SDL_GRAB_OFF);
 404     gui_grab = 0;
 405     sdl_show_cursor();
 406     sdl_update_caption();
 407 }
 408
 409 static void absolute_mouse_grab(void)
 410 {
 411     int mouse_x, mouse_y;
 412
 413     SDL_GetMouseState(&mouse_x, &mouse_y);
 414     if (mouse_x > 0 && mouse_x < real_screen->w - 1 &&
 415         mouse_y > 0 && mouse_y < real_screen->h - 1) {
 416         sdl_grab_start();
 417     }
 418 }
 419
 420 static void sdl_mouse_mode_change(Notifier *notify, void *data)
 421 {
 422     if (qemu_input_is_absolute()) {
 423         if (!absolute_enabled) {
 424             absolute_enabled = 1;
 425             if (qemu_console_is_graphic(NULL)) {
 426                 absolute_mouse_grab();
 427             }
 428         }
 429     } else if (absolute_enabled) {
 430         if (!gui_fullscreen) {
 431             sdl_grab_end();
 432         }
 433         absolute_enabled = 0;
 434     }
 435 }
 436
 437 static void sdl_send_mouse_event(int dx, int dy, int x, int y, int state)
 438 {
 439     static uint32_t bmap[INPUT_BUTTON__MAX] = {
 440         [INPUT_BUTTON_LEFT]       = SDL_BUTTON(SDL_BUTTON_LEFT),
 441         [INPUT_BUTTON_MIDDLE]     = SDL_BUTTON(SDL_BUTTON_MIDDLE),
 442         [INPUT_BUTTON_RIGHT]      = SDL_BUTTON(SDL_BUTTON_RIGHT),
 443         [INPUT_BUTTON_WHEEL_UP]   = SDL_BUTTON(SDL_BUTTON_WHEELUP),
 444         [INPUT_BUTTON_WHEEL_DOWN] = SDL_BUTTON(SDL_BUTTON_WHEELDOWN),
 445     };
 446     static uint32_t prev_state;
 447
 448     if (prev_state != state) {
 449         qemu_input_update_buttons(dcl->con, bmap, prev_state, state);
 450         prev_state = state;
 451     }
 452
 453     if (qemu_input_is_absolute()) {
 454         qemu_input_queue_abs(dcl->con, INPUT_AXIS_X, x,
 455                              0, real_screen->w);
 456         qemu_input_queue_abs(dcl->con, INPUT_AXIS_Y, y,
 457                              0, real_screen->h);
 458     } else {
 459         if (guest_cursor) {
 460             x -= guest_x;
 461             y -= guest_y;
 462             guest_x += x;
 463             guest_y += y;
 464             dx = x;
 465             dy = y;
 466         }
 467         qemu_input_queue_rel(dcl->con, INPUT_AXIS_X, dx);
 468         qemu_input_queue_rel(dcl->con, INPUT_AXIS_Y, dy);
 469     }
 470     qemu_input_event_sync();
 471 }
 472
 473 static void sdl_scale(int width, int height)
 474 {
 475     int bpp = real_screen->format->BitsPerPixel;
 476
 477 #ifdef DEBUG_SDL
 478     printf("SDL: Scaling to %dx%d bpp %d\n", width, height, bpp);
 479 #endif
 480
 481     if (bpp != 16 && bpp != 32) {
 482         bpp = 32;
 483     }
 484     do_sdl_resize(width, height, bpp);
 485     scaling_active = 1;
 486 }
 487
 488 static void toggle_full_screen(void)
 489 {
 490     int width = surface_width(surface);
 491     int height = surface_height(surface);
 492     int bpp = surface_bits_per_pixel(surface);
 493
 494     gui_fullscreen = !gui_fullscreen;
 495     if (gui_fullscreen) {
 496         gui_saved_width = real_screen->w;
 497         gui_saved_height = real_screen->h;
 498         gui_saved_scaling = scaling_active;
 499
 500         do_sdl_resize(width, height, bpp);
 501         scaling_active = 0;
 502
 503         gui_saved_grab = gui_grab;
 504         sdl_grab_start();
 505     } else {
 506         if (gui_saved_scaling) {
 507             sdl_scale(gui_saved_width, gui_saved_height);
 508         } else {
 509             do_sdl_resize(width, height, 0);
 510         }
 511         if (!gui_saved_grab || !qemu_console_is_graphic(NULL)) {
 512             sdl_grab_end();
 513         }
 514     }
 515     graphic_hw_invalidate(NULL);
 516     graphic_hw_update(NULL);
 517 }
 518
 519 static void handle_keydown(SDL_Event *ev)
 520 {
 521     int mod_state;
 522     int keycode;
 523
 524     if (alt_grab) {
 525         mod_state = (SDL_GetModState() & (gui_grab_code | KMOD_LSHIFT)) ==
 526                     (gui_grab_code | KMOD_LSHIFT);
 527     } else if (ctrl_grab) {
 528         mod_state = (SDL_GetModState() & KMOD_RCTRL) == KMOD_RCTRL;
 529     } else {
 530         mod_state = (SDL_GetModState() & gui_grab_code) == gui_grab_code;
 531     }
 532     gui_key_modifier_pressed = mod_state;
 533
 534     if (gui_key_modifier_pressed) {
 535         keycode = sdl_keyevent_to_keycode(&ev->key);
 536         switch (keycode) {
 537         case 0x21: /* 'f' key on US keyboard */
 538             toggle_full_screen();
 539             gui_keysym = 1;
 540             break;
 541         case 0x22: /* 'g' key */
 542             if (!gui_grab) {
 543                 if (qemu_console_is_graphic(NULL)) {
 544                     sdl_grab_start();
 545                 }
 546             } else if (!gui_fullscreen) {
 547                 sdl_grab_end();
 548             }
 549             gui_keysym = 1;
 550             break;
 551         case 0x16: /* 'u' key on US keyboard */
 552             if (scaling_active) {
 553                 scaling_active = 0;
 554                 sdl_switch(dcl, NULL);
 555                 graphic_hw_invalidate(NULL);
 556                 graphic_hw_update(NULL);
 557             }
 558             gui_keysym = 1;
 559             break;
 560         case 0x02 ... 0x0a: /* '1' to '9' keys */
 561             /* Reset the modifiers sent to the current console */
 562             reset_keys();
 563             console_select(keycode - 0x02);
 564             gui_keysym = 1;
 565             if (gui_fullscreen) {
 566                 break;
 567             }
 568             if (!qemu_console_is_graphic(NULL)) {
 569                 /* release grab if going to a text console */
 570                 if (gui_grab) {
 571                     sdl_grab_end();
 572                 } else if (absolute_enabled) {
 573                     sdl_show_cursor();
 574                 }
 575             } else if (absolute_enabled) {
 576                 sdl_hide_cursor();
 577                 absolute_mouse_grab();
 578             }
 579             break;
 580         case 0x1b: /* '+' */
 581         case 0x35: /* '-' */
 582             if (!gui_fullscreen) {
 583                 int width = MAX(real_screen->w + (keycode == 0x1b ? 50 : -50),
 584                                 160);
 585                 int height = (surface_height(surface) * width) /
 586                     surface_width(surface);
 587
 588                 sdl_scale(width, height);
 589                 graphic_hw_invalidate(NULL);
 590                 graphic_hw_update(NULL);
 591                 gui_keysym = 1;
 592             }
 593         default:
 594             break;
 595         }
 596     } else if (!qemu_console_is_graphic(NULL)) {
 597         int keysym = 0;
 598
 599         if (ev->key.keysym.mod & (KMOD_LCTRL | KMOD_RCTRL)) {
 600             switch (ev->key.keysym.sym) {
 601             case SDLK_UP:
 602                 keysym = QEMU_KEY_CTRL_UP;
 603                 break;
 604             case SDLK_DOWN:
 605                 keysym = QEMU_KEY_CTRL_DOWN;
 606                 break;
 607             case SDLK_LEFT:
 608                 keysym = QEMU_KEY_CTRL_LEFT;
 609                 break;
 610             case SDLK_RIGHT:
 611                 keysym = QEMU_KEY_CTRL_RIGHT;
 612                 break;
 613             case SDLK_HOME:
 614                 keysym = QEMU_KEY_CTRL_HOME;
 615                 break;
 616             case SDLK_END:
 617                 keysym = QEMU_KEY_CTRL_END;
 618                 break;
 619             case SDLK_PAGEUP:
 620                 keysym = QEMU_KEY_CTRL_PAGEUP;
 621                 break;
 622             case SDLK_PAGEDOWN:
 623                 keysym = QEMU_KEY_CTRL_PAGEDOWN;
 624                 break;
 625             default:
 626                 break;
 627             }
 628         } else {
 629             switch (ev->key.keysym.sym) {
 630             case SDLK_UP:
 631                 keysym = QEMU_KEY_UP;
 632                 break;
 633             case SDLK_DOWN:
 634                 keysym = QEMU_KEY_DOWN;
 635                 break;
 636             case SDLK_LEFT:
 637                 keysym = QEMU_KEY_LEFT;
 638                 break;
 639             case SDLK_RIGHT:
 640                 keysym = QEMU_KEY_RIGHT;
 641                 break;
 642             case SDLK_HOME:
 643                 keysym = QEMU_KEY_HOME;
 644                 break;
 645             case SDLK_END:
 646                 keysym = QEMU_KEY_END;
 647                 break;
 648             case SDLK_PAGEUP:
 649                 keysym = QEMU_KEY_PAGEUP;
 650                 break;
 651             case SDLK_PAGEDOWN:
 652                 keysym = QEMU_KEY_PAGEDOWN;
 653                 break;
 654             case SDLK_BACKSPACE:
 655                 keysym = QEMU_KEY_BACKSPACE;
 656                 break;
 657             case SDLK_DELETE:
 658                 keysym = QEMU_KEY_DELETE;
 659                 break;
 660             default:
 661                 break;
 662             }
 663         }
 664         if (keysym) {
 665             kbd_put_keysym(keysym);
 666         } else if (ev->key.keysym.unicode != 0) {
 667             kbd_put_keysym(ev->key.keysym.unicode);
 668         }
 669     }
 670     if (qemu_console_is_graphic(NULL) && !gui_keysym) {
 671         sdl_process_key(&ev->key);
 672     }
 673 }
 674
 675 static void handle_keyup(SDL_Event *ev)
 676 {
 677     int mod_state;
 678
 679     if (!alt_grab) {
 680         mod_state = (ev->key.keysym.mod & gui_grab_code);
 681     } else {
 682         mod_state = (ev->key.keysym.mod & (gui_grab_code | KMOD_LSHIFT));
 683     }
 684     if (!mod_state && gui_key_modifier_pressed) {
 685         gui_key_modifier_pressed = 0;
 686         gui_keysym = 0;
 687     }
 688     if (qemu_console_is_graphic(NULL) && !gui_keysym) {
 689         sdl_process_key(&ev->key);
 690     }
 691 }
 692
 693 static void handle_mousemotion(SDL_Event *ev)
 694 {
 695     int max_x, max_y;
 696
 697     if (qemu_console_is_graphic(NULL) &&
 698         (qemu_input_is_absolute() || absolute_enabled)) {
 699         max_x = real_screen->w - 1;
 700         max_y = real_screen->h - 1;
 701         if (gui_grab && (ev->motion.x == 0 || ev->motion.y == 0 ||
 702             ev->motion.x == max_x || ev->motion.y == max_y)) {
 703             sdl_grab_end();
 704         }
 705         if (!gui_grab &&
 706             (ev->motion.x > 0 && ev->motion.x < max_x &&
 707             ev->motion.y > 0 && ev->motion.y < max_y)) {
 708             sdl_grab_start();
 709         }
 710     }
 711     if (gui_grab || qemu_input_is_absolute() || absolute_enabled) {
 712         sdl_send_mouse_event(ev->motion.xrel, ev->motion.yrel,
 713                              ev->motion.x, ev->motion.y, ev->motion.state);
 714     }
 715 }
 716
 717 static void handle_mousebutton(SDL_Event *ev)
 718 {
 719     int buttonstate = SDL_GetMouseState(NULL, NULL);
 720     SDL_MouseButtonEvent *bev;
 721
 722     if (!qemu_console_is_graphic(NULL)) {
 723         return;
 724     }
 725
 726     bev = &ev->button;
 727     if (!gui_grab && !qemu_input_is_absolute()) {
 728         if (ev->type == SDL_MOUSEBUTTONUP && bev->button == SDL_BUTTON_LEFT) {
 729             /* start grabbing all events */
 730             sdl_grab_start();
 731         }
 732     } else {
 733         if (ev->type == SDL_MOUSEBUTTONDOWN) {
 734             buttonstate |= SDL_BUTTON(bev->button);
 735         } else {
 736             buttonstate &= ~SDL_BUTTON(bev->button);
 737         }
 738         sdl_send_mouse_event(0, 0, bev->x, bev->y, buttonstate);
 739     }
 740 }
 741
 742 static void handle_activation(SDL_Event *ev)
 743 {
 744 #ifdef _WIN32
 745     /* Disable grab if the window no longer has the focus
 746      * (Windows-only workaround) */
 747     if (gui_grab && ev->active.state == SDL_APPINPUTFOCUS &&
 748         !ev->active.gain && !gui_fullscreen) {
 749         sdl_grab_end();
 750     }
 751 #endif
 752     if (!gui_grab && ev->active.gain && qemu_console_is_graphic(NULL) &&
 753         (qemu_input_is_absolute() || absolute_enabled)) {
 754         absolute_mouse_grab();
 755     }
 756     if (ev->active.state & SDL_APPACTIVE) {
 757         if (ev->active.gain) {
 758             /* Back to default interval */
 759             update_displaychangelistener(dcl, GUI_REFRESH_INTERVAL_DEFAULT);
 760         } else {
 761             /* Sleeping interval.  Not using the long default here as
 762              * sdl_refresh does not only update the guest screen, but
 763              * also checks for gui events. */
 764             update_displaychangelistener(dcl, 500);
 765         }
 766     }
 767 }
 768
 769 static void sdl_refresh(DisplayChangeListener *dcl)
 770 {
 771     SDL_Event ev1, *ev = &ev1;
 772     int idle = 1;
 773
 774     if (last_vm_running != runstate_is_running()) {
 775         last_vm_running = runstate_is_running();
 776         sdl_update_caption();
 777     }
 778
 779     graphic_hw_update(NULL);
 780     SDL_EnableUNICODE(!qemu_console_is_graphic(NULL));
 781
 782     while (SDL_PollEvent(ev)) {
 783         switch (ev->type) {
 784         case SDL_VIDEOEXPOSE:
 785             sdl_update(dcl, 0, 0, real_screen->w, real_screen->h);
 786             break;
 787         case SDL_KEYDOWN:
 788             idle = 0;
 789             handle_keydown(ev);
 790             break;
 791         case SDL_KEYUP:
 792             idle = 0;
 793             handle_keyup(ev);
 794             break;
 795         case SDL_QUIT:
 796             if (!no_quit) {
 797                 no_shutdown = 0;
 798                 qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_UI);
 799             }
 800             break;
 801         case SDL_MOUSEMOTION:
 802             idle = 0;
 803             handle_mousemotion(ev);
 804             break;
 805         case SDL_MOUSEBUTTONDOWN:
 806         case SDL_MOUSEBUTTONUP:
 807             idle = 0;
 808             handle_mousebutton(ev);
 809             break;
 810         case SDL_ACTIVEEVENT:
 811             handle_activation(ev);
 812             break;
 813         case SDL_VIDEORESIZE:
 814             sdl_scale(ev->resize.w, ev->resize.h);
 815             graphic_hw_invalidate(NULL);
 816             graphic_hw_update(NULL);
 817             break;
 818         default:
 819             break;
 820         }
 821     }
 822
 823     if (idle) {
 824         if (idle_counter < SDL_MAX_IDLE_COUNT) {
 825             idle_counter++;
 826             if (idle_counter >= SDL_MAX_IDLE_COUNT) {
 827                 dcl->update_interval = GUI_REFRESH_INTERVAL_DEFAULT;
 828             }
 829         }
 830     } else {
 831         idle_counter = 0;
 832         dcl->update_interval = SDL_REFRESH_INTERVAL_BUSY;
 833     }
 834 }
 835
 836 static void sdl_mouse_warp(DisplayChangeListener *dcl,
 837                            int x, int y, int on)
 838 {
 839     if (on) {
 840         if (!guest_cursor)
 841             sdl_show_cursor();
 842         if (gui_grab || qemu_input_is_absolute() || absolute_enabled) {
 843             SDL_SetCursor(guest_sprite);
 844             if (!qemu_input_is_absolute() && !absolute_enabled) {
 845                 SDL_WarpMouse(x, y);
 846             }
 847         }
 848     } else if (gui_grab)
 849         sdl_hide_cursor();
 850     guest_cursor = on;
 851     guest_x = x, guest_y = y;
 852 }
 853
 854 static void sdl_mouse_define(DisplayChangeListener *dcl,
 855                              QEMUCursor *c)
 856 {
 857     uint8_t *image, *mask;
 858     int bpl;
 859
 860     if (guest_sprite)
 861         SDL_FreeCursor(guest_sprite);
 862
 863     bpl = cursor_get_mono_bpl(c);
 864     image = g_malloc0(bpl * c->height);
 865     mask  = g_malloc0(bpl * c->height);
 866     cursor_get_mono_image(c, 0x000000, image);
 867     cursor_get_mono_mask(c, 0, mask);
 868     guest_sprite = SDL_CreateCursor(image, mask, c->width, c->height,
 869                                     c->hot_x, c->hot_y);
 870     g_free(image);
 871     g_free(mask);
 872
 873     if (guest_cursor &&
 874             (gui_grab || qemu_input_is_absolute() || absolute_enabled))
 875         SDL_SetCursor(guest_sprite);
 876 }
 877
 878 static void sdl_cleanup(void)
 879 {
 880     if (guest_sprite)
 881         SDL_FreeCursor(guest_sprite);
 882     SDL_QuitSubSystem(SDL_INIT_VIDEO);
 883 }
 884
 885 static const DisplayChangeListenerOps dcl_ops = {
 886     .dpy_name             = "sdl",
 887     .dpy_gfx_update       = sdl_update,
 888     .dpy_gfx_switch       = sdl_switch,
 889     .dpy_gfx_check_format = sdl_check_format,
 890     .dpy_refresh          = sdl_refresh,
 891     .dpy_mouse_set        = sdl_mouse_warp,
 892     .dpy_cursor_define    = sdl_mouse_define,
 893 };
 894
 895 void sdl_display_early_init(int opengl)
 896 {
 897     if (opengl == 1 /* on */) {
 898         fprintf(stderr,
 899                 "SDL1 display code has no opengl support.\n"
 900                 "Please recompile qemu with SDL2, using\n"
 901                 "./configure --enable-sdl --with-sdlabi=2.0\n");
 902     }
 903 }
 904
 905 void sdl_display_init(DisplayState *ds, int full_screen)
 906 {
 907     int flags;
 908     uint8_t data = 0;
 909     const SDL_VideoInfo *vi;
 910     SDL_SysWMinfo info;
 911     char *filename;
 912
 913 #if defined(__APPLE__)
 914     /* always use generic keymaps */
 915     if (!keyboard_layout)
 916         keyboard_layout = "en-us";
 917 #endif
 918     if(keyboard_layout) {
 919         kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
 920         if (!kbd_layout)
 921             exit(1);
 922     }
 923
 924     g_printerr("Running QEMU with SDL 1.2 is deprecated, and will be removed\n"
 925                "in a future release. Please switch to SDL 2.0 instead\n");
 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 }