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 <SDL.h>
  29 #include <SDL_syswm.h>
  30
  31 #include "qemu-common.h"
  32 #include "console.h"
  33 #include "sysemu.h"
  34 #include "x_keymap.h"
  35 #include "sdl_zoom.h"
  36
  37 static DisplayChangeListener *dcl;
  38 static SDL_Surface *real_screen;
  39 static SDL_Surface *guest_screen = NULL;
  40 static int gui_grab; /* if true, all keyboard/mouse events are grabbed */
  41 static int last_vm_running;
  42 static bool gui_saved_scaling;
  43 static int gui_saved_width;
  44 static int gui_saved_height;
  45 static int gui_saved_grab;
  46 static int gui_fullscreen;
  47 static int gui_noframe;
  48 static int gui_key_modifier_pressed;
  49 static int gui_keysym;
  50 static int gui_grab_code = KMOD_LALT | KMOD_LCTRL;
  51 static uint8_t modifiers_state[256];
  52 static SDL_Cursor *sdl_cursor_normal;
  53 static SDL_Cursor *sdl_cursor_hidden;
  54 static int absolute_enabled = 0;
  55 static int guest_cursor = 0;
  56 static int guest_x, guest_y;
  57 static SDL_Cursor *guest_sprite = NULL;
  58 static uint8_t allocator;
  59 static SDL_PixelFormat host_format;
  60 static int scaling_active = 0;
  61 static Notifier mouse_mode_notifier;
  62
  63 static void sdl_update(DisplayState *ds, int x, int y, int w, int h)
  64 {
  65     //    printf("updating x=%d y=%d w=%d h=%d\n", x, y, w, h);
  66     SDL_Rect rec;
  67     rec.x = x;
  68     rec.y = y;
  69     rec.w = w;
  70     rec.h = h;
  71
  72     if (guest_screen) {
  73         if (!scaling_active) {
  74             SDL_BlitSurface(guest_screen, &rec, real_screen, &rec);
  75         } else {
  76             if (sdl_zoom_blit(guest_screen, real_screen, SMOOTHING_ON, &rec) < 0) {
  77                 fprintf(stderr, "Zoom blit failed\n");
  78                 exit(1);
  79             }
  80         }
  81     }
  82     SDL_UpdateRect(real_screen, rec.x, rec.y, rec.w, rec.h);
  83 }
  84
  85 static void sdl_setdata(DisplayState *ds)
  86 {
  87     if (guest_screen != NULL) SDL_FreeSurface(guest_screen);
  88
  89     guest_screen = SDL_CreateRGBSurfaceFrom(ds_get_data(ds), ds_get_width(ds), ds_get_height(ds),
  90                                             ds_get_bits_per_pixel(ds), ds_get_linesize(ds),
  91                                             ds->surface->pf.rmask, ds->surface->pf.gmask,
  92                                             ds->surface->pf.bmask, ds->surface->pf.amask);
  93 }
  94
  95 static void do_sdl_resize(int width, int height, int bpp)
  96 {
  97     int flags;
  98
  99     //    printf("resizing to %d %d\n", w, h);
 100
 101     flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
 102     if (gui_fullscreen) {
 103         flags |= SDL_FULLSCREEN;
 104     } else {
 105         flags |= SDL_RESIZABLE;
 106     }
 107     if (gui_noframe)
 108         flags |= SDL_NOFRAME;
 109
 110     real_screen = SDL_SetVideoMode(width, height, bpp, flags);
 111     if (!real_screen) {
 112         fprintf(stderr, "Could not open SDL display (%dx%dx%d): %s\n", width,
 113                 height, bpp, SDL_GetError());
 114         exit(1);
 115     }
 116 }
 117
 118 static void sdl_resize(DisplayState *ds)
 119 {
 120     if  (!allocator) {
 121         if (!scaling_active)
 122             do_sdl_resize(ds_get_width(ds), ds_get_height(ds), 0);
 123         else if (real_screen->format->BitsPerPixel != ds_get_bits_per_pixel(ds))
 124             do_sdl_resize(real_screen->w, real_screen->h, ds_get_bits_per_pixel(ds));
 125         sdl_setdata(ds);
 126     } else {
 127         if (guest_screen != NULL) {
 128             SDL_FreeSurface(guest_screen);
 129             guest_screen = NULL;
 130         }
 131     }
 132 }
 133
 134 static PixelFormat sdl_to_qemu_pixelformat(SDL_PixelFormat *sdl_pf)
 135 {
 136     PixelFormat qemu_pf;
 137
 138     memset(&qemu_pf, 0x00, sizeof(PixelFormat));
 139
 140     qemu_pf.bits_per_pixel = sdl_pf->BitsPerPixel;
 141     qemu_pf.bytes_per_pixel = sdl_pf->BytesPerPixel;
 142     qemu_pf.depth = (qemu_pf.bits_per_pixel) == 32 ? 24 : (qemu_pf.bits_per_pixel);
 143
 144     qemu_pf.rmask = sdl_pf->Rmask;
 145     qemu_pf.gmask = sdl_pf->Gmask;
 146     qemu_pf.bmask = sdl_pf->Bmask;
 147     qemu_pf.amask = sdl_pf->Amask;
 148
 149     qemu_pf.rshift = sdl_pf->Rshift;
 150     qemu_pf.gshift = sdl_pf->Gshift;
 151     qemu_pf.bshift = sdl_pf->Bshift;
 152     qemu_pf.ashift = sdl_pf->Ashift;
 153
 154     qemu_pf.rbits = 8 - sdl_pf->Rloss;
 155     qemu_pf.gbits = 8 - sdl_pf->Gloss;
 156     qemu_pf.bbits = 8 - sdl_pf->Bloss;
 157     qemu_pf.abits = 8 - sdl_pf->Aloss;
 158
 159     qemu_pf.rmax = ((1 << qemu_pf.rbits) - 1);
 160     qemu_pf.gmax = ((1 << qemu_pf.gbits) - 1);
 161     qemu_pf.bmax = ((1 << qemu_pf.bbits) - 1);
 162     qemu_pf.amax = ((1 << qemu_pf.abits) - 1);
 163
 164     return qemu_pf;
 165 }
 166
 167 static DisplaySurface* sdl_create_displaysurface(int width, int height)
 168 {
 169     DisplaySurface *surface = (DisplaySurface*) g_malloc0(sizeof(DisplaySurface));
 170
 171     surface->width = width;
 172     surface->height = height;
 173
 174     if (scaling_active) {
 175         int linesize;
 176         PixelFormat pf;
 177         if (host_format.BytesPerPixel != 2 && host_format.BytesPerPixel != 4) {
 178             linesize = width * 4;
 179             pf = qemu_default_pixelformat(32);
 180         } else {
 181             linesize = width * host_format.BytesPerPixel;
 182             pf = sdl_to_qemu_pixelformat(&host_format);
 183         }
 184         qemu_alloc_display(surface, width, height, linesize, pf, 0);
 185         return surface;
 186     }
 187
 188     if (host_format.BitsPerPixel == 16)
 189         do_sdl_resize(width, height, 16);
 190     else
 191         do_sdl_resize(width, height, 32);
 192
 193     surface->pf = sdl_to_qemu_pixelformat(real_screen->format);
 194     surface->linesize = real_screen->pitch;
 195     surface->data = real_screen->pixels;
 196
 197 #ifdef HOST_WORDS_BIGENDIAN
 198     surface->flags = QEMU_REALPIXELS_FLAG | QEMU_BIG_ENDIAN_FLAG;
 199 #else
 200     surface->flags = QEMU_REALPIXELS_FLAG;
 201 #endif
 202     allocator = 1;
 203
 204     return surface;
 205 }
 206
 207 static void sdl_free_displaysurface(DisplaySurface *surface)
 208 {
 209     allocator = 0;
 210     if (surface == NULL)
 211         return;
 212
 213     if (surface->flags & QEMU_ALLOCATED_FLAG)
 214         g_free(surface->data);
 215     g_free(surface);
 216 }
 217
 218 static DisplaySurface* sdl_resize_displaysurface(DisplaySurface *surface, int width, int height)
 219 {
 220     sdl_free_displaysurface(surface);
 221     return sdl_create_displaysurface(width, height);
 222 }
 223
 224 /* generic keyboard conversion */
 225
 226 #include "sdl_keysym.h"
 227
 228 static kbd_layout_t *kbd_layout = NULL;
 229
 230 static uint8_t sdl_keyevent_to_keycode_generic(const SDL_KeyboardEvent *ev)
 231 {
 232     int keysym;
 233     /* workaround for X11+SDL bug with AltGR */
 234     keysym = ev->keysym.sym;
 235     if (keysym == 0 && ev->keysym.scancode == 113)
 236         keysym = SDLK_MODE;
 237     /* For Japanese key '\' and '|' */
 238     if (keysym == 92 && ev->keysym.scancode == 133) {
 239         keysym = 0xa5;
 240     }
 241     return keysym2scancode(kbd_layout, keysym) & SCANCODE_KEYMASK;
 242 }
 243
 244 /* specific keyboard conversions from scan codes */
 245
 246 #if defined(_WIN32)
 247
 248 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 249 {
 250     return ev->keysym.scancode;
 251 }
 252
 253 #else
 254
 255 #if defined(SDL_VIDEO_DRIVER_X11)
 256 #include <X11/XKBlib.h>
 257
 258 static int check_for_evdev(void)
 259 {
 260     SDL_SysWMinfo info;
 261     XkbDescPtr desc = NULL;
 262     int has_evdev = 0;
 263     char *keycodes = NULL;
 264
 265     SDL_VERSION(&info.version);
 266     if (!SDL_GetWMInfo(&info)) {
 267         return 0;
 268     }
 269     desc = XkbGetKeyboard(info.info.x11.display,
 270                           XkbGBN_AllComponentsMask,
 271                           XkbUseCoreKbd);
 272     if (desc && desc->names) {
 273         keycodes = XGetAtomName(info.info.x11.display, desc->names->keycodes);
 274         if (keycodes == NULL) {
 275             fprintf(stderr, "could not lookup keycode name\n");
 276         } else if (strstart(keycodes, "evdev", NULL)) {
 277             has_evdev = 1;
 278         } else if (!strstart(keycodes, "xfree86", NULL)) {
 279             fprintf(stderr, "unknown keycodes `%s', please report to "
 280                     "qemu-devel@nongnu.org\n", keycodes);
 281         }
 282     }
 283
 284     if (desc) {
 285         XkbFreeKeyboard(desc, XkbGBN_AllComponentsMask, True);
 286     }
 287     if (keycodes) {
 288         XFree(keycodes);
 289     }
 290     return has_evdev;
 291 }
 292 #else
 293 static int check_for_evdev(void)
 294 {
 295         return 0;
 296 }
 297 #endif
 298
 299 static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 300 {
 301     int keycode;
 302     static int has_evdev = -1;
 303
 304     if (has_evdev == -1)
 305         has_evdev = check_for_evdev();
 306
 307     keycode = ev->keysym.scancode;
 308
 309     if (keycode < 9) {
 310         keycode = 0;
 311     } else if (keycode < 97) {
 312         keycode -= 8; /* just an offset */
 313     } else if (keycode < 158) {
 314         /* use conversion table */
 315         if (has_evdev)
 316             keycode = translate_evdev_keycode(keycode - 97);
 317         else
 318             keycode = translate_xfree86_keycode(keycode - 97);
 319     } else if (keycode == 208) { /* Hiragana_Katakana */
 320         keycode = 0x70;
 321     } else if (keycode == 211) { /* backslash */
 322         keycode = 0x73;
 323     } else {
 324         keycode = 0;
 325     }
 326     return keycode;
 327 }
 328
 329 #endif
 330
 331 static void reset_keys(void)
 332 {
 333     int i;
 334     for(i = 0; i < 256; i++) {
 335         if (modifiers_state[i]) {
 336             if (i & SCANCODE_GREY)
 337                 kbd_put_keycode(SCANCODE_EMUL0);
 338             kbd_put_keycode(i | SCANCODE_UP);
 339             modifiers_state[i] = 0;
 340         }
 341     }
 342 }
 343
 344 static void sdl_process_key(SDL_KeyboardEvent *ev)
 345 {
 346     int keycode, v;
 347
 348     if (ev->keysym.sym == SDLK_PAUSE) {
 349         /* specific case */
 350         v = 0;
 351         if (ev->type == SDL_KEYUP)
 352             v |= SCANCODE_UP;
 353         kbd_put_keycode(0xe1);
 354         kbd_put_keycode(0x1d | v);
 355         kbd_put_keycode(0x45 | v);
 356         return;
 357     }
 358
 359     if (kbd_layout) {
 360         keycode = sdl_keyevent_to_keycode_generic(ev);
 361     } else {
 362         keycode = sdl_keyevent_to_keycode(ev);
 363     }
 364
 365     switch(keycode) {
 366     case 0x00:
 367         /* sent when leaving window: reset the modifiers state */
 368         reset_keys();
 369         return;
 370     case 0x2a:                          /* Left Shift */
 371     case 0x36:                          /* Right Shift */
 372     case 0x1d:                          /* Left CTRL */
 373     case 0x9d:                          /* Right CTRL */
 374     case 0x38:                          /* Left ALT */
 375     case 0xb8:                         /* Right ALT */
 376         if (ev->type == SDL_KEYUP)
 377             modifiers_state[keycode] = 0;
 378         else
 379             modifiers_state[keycode] = 1;
 380         break;
 381 #define QEMU_SDL_VERSION ((SDL_MAJOR_VERSION << 8) + SDL_MINOR_VERSION)
 382 #if QEMU_SDL_VERSION < 0x102 || QEMU_SDL_VERSION == 0x102 && SDL_PATCHLEVEL < 14
 383         /* SDL versions before 1.2.14 don't support key up for caps/num lock. */
 384     case 0x45: /* num lock */
 385     case 0x3a: /* caps lock */
 386         /* SDL does not send the key up event, so we generate it */
 387         kbd_put_keycode(keycode);
 388         kbd_put_keycode(keycode | SCANCODE_UP);
 389         return;
 390 #endif
 391     }
 392
 393     /* now send the key code */
 394     if (keycode & SCANCODE_GREY)
 395         kbd_put_keycode(SCANCODE_EMUL0);
 396     if (ev->type == SDL_KEYUP)
 397         kbd_put_keycode(keycode | SCANCODE_UP);
 398     else
 399         kbd_put_keycode(keycode & SCANCODE_KEYCODEMASK);
 400 }
 401
 402 static void sdl_update_caption(void)
 403 {
 404     char win_title[1024];
 405     char icon_title[1024];
 406     const char *status = "";
 407
 408     if (!runstate_is_running())
 409         status = " [Stopped]";
 410     else if (gui_grab) {
 411         if (alt_grab)
 412             status = " - Press Ctrl-Alt-Shift to exit mouse grab";
 413         else if (ctrl_grab)
 414             status = " - Press Right-Ctrl to exit mouse grab";
 415         else
 416             status = " - Press Ctrl-Alt to exit mouse grab";
 417     }
 418
 419     if (qemu_name) {
 420         snprintf(win_title, sizeof(win_title), "QEMU (%s)%s", qemu_name, status);
 421         snprintf(icon_title, sizeof(icon_title), "QEMU (%s)", qemu_name);
 422     } else {
 423         snprintf(win_title, sizeof(win_title), "QEMU%s", status);
 424         snprintf(icon_title, sizeof(icon_title), "QEMU");
 425     }
 426
 427     SDL_WM_SetCaption(win_title, icon_title);
 428 }
 429
 430 static void sdl_hide_cursor(void)
 431 {
 432     if (!cursor_hide)
 433         return;
 434
 435     if (kbd_mouse_is_absolute()) {
 436         SDL_ShowCursor(1);
 437         SDL_SetCursor(sdl_cursor_hidden);
 438     } else {
 439         SDL_ShowCursor(0);
 440     }
 441 }
 442
 443 static void sdl_show_cursor(void)
 444 {
 445     if (!cursor_hide)
 446         return;
 447
 448     if (!kbd_mouse_is_absolute() || !is_graphic_console()) {
 449         SDL_ShowCursor(1);
 450         if (guest_cursor &&
 451                 (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
 452             SDL_SetCursor(guest_sprite);
 453         else
 454             SDL_SetCursor(sdl_cursor_normal);
 455     }
 456 }
 457
 458 static void sdl_grab_start(void)
 459 {
 460     /*
 461      * If the application is not active, do not try to enter grab state. This
 462      * prevents 'SDL_WM_GrabInput(SDL_GRAB_ON)' from blocking all the
 463      * application (SDL bug).
 464      */
 465     if (!(SDL_GetAppState() & SDL_APPINPUTFOCUS)) {
 466         return;
 467     }
 468     if (guest_cursor) {
 469         SDL_SetCursor(guest_sprite);
 470         if (!kbd_mouse_is_absolute() && !absolute_enabled)
 471             SDL_WarpMouse(guest_x, guest_y);
 472     } else
 473         sdl_hide_cursor();
 474     SDL_WM_GrabInput(SDL_GRAB_ON);
 475     gui_grab = 1;
 476     sdl_update_caption();
 477 }
 478
 479 static void sdl_grab_end(void)
 480 {
 481     SDL_WM_GrabInput(SDL_GRAB_OFF);
 482     gui_grab = 0;
 483     sdl_show_cursor();
 484     sdl_update_caption();
 485 }
 486
 487 static void absolute_mouse_grab(void)
 488 {
 489     int mouse_x, mouse_y;
 490
 491     SDL_GetMouseState(&mouse_x, &mouse_y);
 492     if (mouse_x > 0 && mouse_x < real_screen->w - 1 &&
 493         mouse_y > 0 && mouse_y < real_screen->h - 1) {
 494         sdl_grab_start();
 495     }
 496 }
 497
 498 static void sdl_mouse_mode_change(Notifier *notify, void *data)
 499 {
 500     if (kbd_mouse_is_absolute()) {
 501         if (!absolute_enabled) {
 502             absolute_enabled = 1;
 503             if (is_graphic_console()) {
 504                 absolute_mouse_grab();
 505             }
 506         }
 507     } else if (absolute_enabled) {
 508         if (!gui_fullscreen) {
 509             sdl_grab_end();
 510         }
 511         absolute_enabled = 0;
 512     }
 513 }
 514
 515 static void sdl_send_mouse_event(int dx, int dy, int dz, int x, int y, int state)
 516 {
 517     int buttons = 0;
 518
 519     if (state & SDL_BUTTON(SDL_BUTTON_LEFT)) {
 520         buttons |= MOUSE_EVENT_LBUTTON;
 521     }
 522     if (state & SDL_BUTTON(SDL_BUTTON_RIGHT)) {
 523         buttons |= MOUSE_EVENT_RBUTTON;
 524     }
 525     if (state & SDL_BUTTON(SDL_BUTTON_MIDDLE)) {
 526         buttons |= MOUSE_EVENT_MBUTTON;
 527     }
 528
 529     if (kbd_mouse_is_absolute()) {
 530         dx = x * 0x7FFF / (real_screen->w - 1);
 531         dy = y * 0x7FFF / (real_screen->h - 1);
 532     } else if (guest_cursor) {
 533         x -= guest_x;
 534         y -= guest_y;
 535         guest_x += x;
 536         guest_y += y;
 537         dx = x;
 538         dy = y;
 539     }
 540
 541     kbd_mouse_event(dx, dy, dz, buttons);
 542 }
 543
 544 static void sdl_scale(DisplayState *ds, int width, int height)
 545 {
 546     int bpp = real_screen->format->BitsPerPixel;
 547
 548     if (bpp != 16 && bpp != 32) {
 549         bpp = 32;
 550     }
 551     do_sdl_resize(width, height, bpp);
 552     scaling_active = 1;
 553     if (!is_buffer_shared(ds->surface)) {
 554         ds->surface = qemu_resize_displaysurface(ds, ds_get_width(ds),
 555                                                  ds_get_height(ds));
 556         dpy_resize(ds);
 557     }
 558 }
 559
 560 static void toggle_full_screen(DisplayState *ds)
 561 {
 562     gui_fullscreen = !gui_fullscreen;
 563     if (gui_fullscreen) {
 564         gui_saved_width = real_screen->w;
 565         gui_saved_height = real_screen->h;
 566         gui_saved_scaling = scaling_active;
 567
 568         do_sdl_resize(ds_get_width(ds), ds_get_height(ds),
 569                       ds_get_bits_per_pixel(ds));
 570         scaling_active = 0;
 571
 572         gui_saved_grab = gui_grab;
 573         sdl_grab_start();
 574     } else {
 575         if (gui_saved_scaling) {
 576             sdl_scale(ds, gui_saved_width, gui_saved_height);
 577         } else {
 578             do_sdl_resize(ds_get_width(ds), ds_get_height(ds), 0);
 579         }
 580         if (!gui_saved_grab || !is_graphic_console()) {
 581             sdl_grab_end();
 582         }
 583     }
 584     vga_hw_invalidate();
 585     vga_hw_update();
 586 }
 587
 588 static void handle_keydown(DisplayState *ds, SDL_Event *ev)
 589 {
 590     int mod_state;
 591     int keycode;
 592
 593     if (alt_grab) {
 594         mod_state = (SDL_GetModState() & (gui_grab_code | KMOD_LSHIFT)) ==
 595                     (gui_grab_code | KMOD_LSHIFT);
 596     } else if (ctrl_grab) {
 597         mod_state = (SDL_GetModState() & KMOD_RCTRL) == KMOD_RCTRL;
 598     } else {
 599         mod_state = (SDL_GetModState() & gui_grab_code) == gui_grab_code;
 600     }
 601     gui_key_modifier_pressed = mod_state;
 602
 603     if (gui_key_modifier_pressed) {
 604         keycode = sdl_keyevent_to_keycode(&ev->key);
 605         switch (keycode) {
 606         case 0x21: /* 'f' key on US keyboard */
 607             toggle_full_screen(ds);
 608             gui_keysym = 1;
 609             break;
 610         case 0x16: /* 'u' key on US keyboard */
 611             if (scaling_active) {
 612                 scaling_active = 0;
 613                 sdl_resize(ds);
 614                 vga_hw_invalidate();
 615                 vga_hw_update();
 616             }
 617             gui_keysym = 1;
 618             break;
 619         case 0x02 ... 0x0a: /* '1' to '9' keys */
 620             /* Reset the modifiers sent to the current console */
 621             reset_keys();
 622             console_select(keycode - 0x02);
 623             gui_keysym = 1;
 624             if (gui_fullscreen) {
 625                 break;
 626             }
 627             if (!is_graphic_console()) {
 628                 /* release grab if going to a text console */
 629                 if (gui_grab) {
 630                     sdl_grab_end();
 631                 } else if (absolute_enabled) {
 632                     sdl_show_cursor();
 633                 }
 634             } else if (absolute_enabled) {
 635                 sdl_hide_cursor();
 636                 absolute_mouse_grab();
 637             }
 638             break;
 639         case 0x1b: /* '+' */
 640         case 0x35: /* '-' */
 641             if (!gui_fullscreen) {
 642                 int width = MAX(real_screen->w + (keycode == 0x1b ? 50 : -50),
 643                                 160);
 644                 int height = (ds_get_height(ds) * width) / ds_get_width(ds);
 645
 646                 sdl_scale(ds, width, height);
 647                 vga_hw_invalidate();
 648                 vga_hw_update();
 649                 gui_keysym = 1;
 650             }
 651         default:
 652             break;
 653         }
 654     } else if (!is_graphic_console()) {
 655         int keysym = 0;
 656
 657         if (ev->key.keysym.mod & (KMOD_LCTRL | KMOD_RCTRL)) {
 658             switch (ev->key.keysym.sym) {
 659             case SDLK_UP:
 660                 keysym = QEMU_KEY_CTRL_UP;
 661                 break;
 662             case SDLK_DOWN:
 663                 keysym = QEMU_KEY_CTRL_DOWN;
 664                 break;
 665             case SDLK_LEFT:
 666                 keysym = QEMU_KEY_CTRL_LEFT;
 667                 break;
 668             case SDLK_RIGHT:
 669                 keysym = QEMU_KEY_CTRL_RIGHT;
 670                 break;
 671             case SDLK_HOME:
 672                 keysym = QEMU_KEY_CTRL_HOME;
 673                 break;
 674             case SDLK_END:
 675                 keysym = QEMU_KEY_CTRL_END;
 676                 break;
 677             case SDLK_PAGEUP:
 678                 keysym = QEMU_KEY_CTRL_PAGEUP;
 679                 break;
 680             case SDLK_PAGEDOWN:
 681                 keysym = QEMU_KEY_CTRL_PAGEDOWN;
 682                 break;
 683             default:
 684                 break;
 685             }
 686         } else {
 687             switch (ev->key.keysym.sym) {
 688             case SDLK_UP:
 689                 keysym = QEMU_KEY_UP;
 690                 break;
 691             case SDLK_DOWN:
 692                 keysym = QEMU_KEY_DOWN;
 693                 break;
 694             case SDLK_LEFT:
 695                 keysym = QEMU_KEY_LEFT;
 696                 break;
 697             case SDLK_RIGHT:
 698                 keysym = QEMU_KEY_RIGHT;
 699                 break;
 700             case SDLK_HOME:
 701                 keysym = QEMU_KEY_HOME;
 702                 break;
 703             case SDLK_END:
 704                 keysym = QEMU_KEY_END;
 705                 break;
 706             case SDLK_PAGEUP:
 707                 keysym = QEMU_KEY_PAGEUP;
 708                 break;
 709             case SDLK_PAGEDOWN:
 710                 keysym = QEMU_KEY_PAGEDOWN;
 711                 break;
 712             case SDLK_BACKSPACE:
 713                 keysym = QEMU_KEY_BACKSPACE;
 714                 break;
 715             case SDLK_DELETE:
 716                 keysym = QEMU_KEY_DELETE;
 717                 break;
 718             default:
 719                 break;
 720             }
 721         }
 722         if (keysym) {
 723             kbd_put_keysym(keysym);
 724         } else if (ev->key.keysym.unicode != 0) {
 725             kbd_put_keysym(ev->key.keysym.unicode);
 726         }
 727     }
 728     if (is_graphic_console() && !gui_keysym) {
 729         sdl_process_key(&ev->key);
 730     }
 731 }
 732
 733 static void handle_keyup(DisplayState *ds, SDL_Event *ev)
 734 {
 735     int mod_state;
 736
 737     if (!alt_grab) {
 738         mod_state = (ev->key.keysym.mod & gui_grab_code);
 739     } else {
 740         mod_state = (ev->key.keysym.mod & (gui_grab_code | KMOD_LSHIFT));
 741     }
 742     if (!mod_state && gui_key_modifier_pressed) {
 743         gui_key_modifier_pressed = 0;
 744         if (gui_keysym == 0) {
 745             /* exit/enter grab if pressing Ctrl-Alt */
 746             if (!gui_grab) {
 747                 if (is_graphic_console()) {
 748                     sdl_grab_start();
 749                 }
 750             } else if (!gui_fullscreen) {
 751                 sdl_grab_end();
 752             }
 753             /* SDL does not send back all the modifiers key, so we must
 754              * correct it. */
 755             reset_keys();
 756             return;
 757         }
 758         gui_keysym = 0;
 759     }
 760     if (is_graphic_console() && !gui_keysym) {
 761         sdl_process_key(&ev->key);
 762     }
 763 }
 764
 765 static void handle_mousemotion(DisplayState *ds, SDL_Event *ev)
 766 {
 767     int max_x, max_y;
 768
 769     if (is_graphic_console() &&
 770         (kbd_mouse_is_absolute() || absolute_enabled)) {
 771         max_x = real_screen->w - 1;
 772         max_y = real_screen->h - 1;
 773         if (gui_grab && (ev->motion.x == 0 || ev->motion.y == 0 ||
 774             ev->motion.x == max_x || ev->motion.y == max_y)) {
 775             sdl_grab_end();
 776         }
 777         if (!gui_grab &&
 778             (ev->motion.x > 0 && ev->motion.x < max_x &&
 779             ev->motion.y > 0 && ev->motion.y < max_y)) {
 780             sdl_grab_start();
 781         }
 782     }
 783     if (gui_grab || kbd_mouse_is_absolute() || absolute_enabled) {
 784         sdl_send_mouse_event(ev->motion.xrel, ev->motion.yrel, 0,
 785                              ev->motion.x, ev->motion.y, ev->motion.state);
 786     }
 787 }
 788
 789 static void handle_mousebutton(DisplayState *ds, SDL_Event *ev)
 790 {
 791     int buttonstate = SDL_GetMouseState(NULL, NULL);
 792     SDL_MouseButtonEvent *bev;
 793     int dz;
 794
 795     if (!is_graphic_console()) {
 796         return;
 797     }
 798
 799     bev = &ev->button;
 800     if (!gui_grab && !kbd_mouse_is_absolute()) {
 801         if (ev->type == SDL_MOUSEBUTTONUP && bev->button == SDL_BUTTON_LEFT) {
 802             /* start grabbing all events */
 803             sdl_grab_start();
 804         }
 805     } else {
 806         dz = 0;
 807         if (ev->type == SDL_MOUSEBUTTONDOWN) {
 808             buttonstate |= SDL_BUTTON(bev->button);
 809         } else {
 810             buttonstate &= ~SDL_BUTTON(bev->button);
 811         }
 812 #ifdef SDL_BUTTON_WHEELUP
 813         if (bev->button == SDL_BUTTON_WHEELUP &&
 814             ev->type == SDL_MOUSEBUTTONDOWN) {
 815             dz = -1;
 816         } else if (bev->button == SDL_BUTTON_WHEELDOWN &&
 817                    ev->type == SDL_MOUSEBUTTONDOWN) {
 818             dz = 1;
 819         }
 820 #endif
 821         sdl_send_mouse_event(0, 0, dz, bev->x, bev->y, buttonstate);
 822     }
 823 }
 824
 825 static void handle_activation(DisplayState *ds, SDL_Event *ev)
 826 {
 827 #ifdef _WIN32
 828     /* Disable grab if the window no longer has the focus
 829      * (Windows-only workaround) */
 830     if (gui_grab && ev->active.state == SDL_APPINPUTFOCUS &&
 831         !ev->active.gain && !gui_fullscreen) {
 832         sdl_grab_end();
 833     }
 834 #endif
 835     if (!gui_grab && ev->active.gain && is_graphic_console() &&
 836         (kbd_mouse_is_absolute() || absolute_enabled)) {
 837         absolute_mouse_grab();
 838     }
 839     if (ev->active.state & SDL_APPACTIVE) {
 840         if (ev->active.gain) {
 841             /* Back to default interval */
 842             dcl->gui_timer_interval = 0;
 843             dcl->idle = 0;
 844         } else {
 845             /* Sleeping interval */
 846             dcl->gui_timer_interval = 500;
 847             dcl->idle = 1;
 848         }
 849     }
 850 }
 851
 852 static void sdl_refresh(DisplayState *ds)
 853 {
 854     SDL_Event ev1, *ev = &ev1;
 855
 856     if (last_vm_running != runstate_is_running()) {
 857         last_vm_running = runstate_is_running();
 858         sdl_update_caption();
 859     }
 860
 861     vga_hw_update();
 862     SDL_EnableUNICODE(!is_graphic_console());
 863
 864     while (SDL_PollEvent(ev)) {
 865         switch (ev->type) {
 866         case SDL_VIDEOEXPOSE:
 867             sdl_update(ds, 0, 0, real_screen->w, real_screen->h);
 868             break;
 869         case SDL_KEYDOWN:
 870             handle_keydown(ds, ev);
 871             break;
 872         case SDL_KEYUP:
 873             handle_keyup(ds, ev);
 874             break;
 875         case SDL_QUIT:
 876             if (!no_quit) {
 877                 no_shutdown = 0;
 878                 qemu_system_shutdown_request();
 879             }
 880             break;
 881         case SDL_MOUSEMOTION:
 882             handle_mousemotion(ds, ev);
 883             break;
 884         case SDL_MOUSEBUTTONDOWN:
 885         case SDL_MOUSEBUTTONUP:
 886             handle_mousebutton(ds, ev);
 887             break;
 888         case SDL_ACTIVEEVENT:
 889             handle_activation(ds, ev);
 890             break;
 891         case SDL_VIDEORESIZE:
 892             sdl_scale(ds, ev->resize.w, ev->resize.h);
 893             vga_hw_invalidate();
 894             vga_hw_update();
 895             break;
 896         default:
 897             break;
 898         }
 899     }
 900 }
 901
 902 static void sdl_fill(DisplayState *ds, int x, int y, int w, int h, uint32_t c)
 903 {
 904     SDL_Rect dst = { x, y, w, h };
 905     SDL_FillRect(real_screen, &dst, c);
 906 }
 907
 908 static void sdl_mouse_warp(int x, int y, int on)
 909 {
 910     if (on) {
 911         if (!guest_cursor)
 912             sdl_show_cursor();
 913         if (gui_grab || kbd_mouse_is_absolute() || absolute_enabled) {
 914             SDL_SetCursor(guest_sprite);
 915             if (!kbd_mouse_is_absolute() && !absolute_enabled)
 916                 SDL_WarpMouse(x, y);
 917         }
 918     } else if (gui_grab)
 919         sdl_hide_cursor();
 920     guest_cursor = on;
 921     guest_x = x, guest_y = y;
 922 }
 923
 924 static void sdl_mouse_define(QEMUCursor *c)
 925 {
 926     uint8_t *image, *mask;
 927     int bpl;
 928
 929     if (guest_sprite)
 930         SDL_FreeCursor(guest_sprite);
 931
 932     bpl = cursor_get_mono_bpl(c);
 933     image = g_malloc0(bpl * c->height);
 934     mask  = g_malloc0(bpl * c->height);
 935     cursor_get_mono_image(c, 0x000000, image);
 936     cursor_get_mono_mask(c, 0, mask);
 937     guest_sprite = SDL_CreateCursor(image, mask, c->width, c->height,
 938                                     c->hot_x, c->hot_y);
 939     g_free(image);
 940     g_free(mask);
 941
 942     if (guest_cursor &&
 943             (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
 944         SDL_SetCursor(guest_sprite);
 945 }
 946
 947 static void sdl_cleanup(void)
 948 {
 949     if (guest_sprite)
 950         SDL_FreeCursor(guest_sprite);
 951     SDL_QuitSubSystem(SDL_INIT_VIDEO);
 952 }
 953
 954 void sdl_display_init(DisplayState *ds, int full_screen, int no_frame)
 955 {
 956     int flags;
 957     uint8_t data = 0;
 958     DisplayAllocator *da;
 959     const SDL_VideoInfo *vi;
 960     char *filename;
 961
 962 #if defined(__APPLE__)
 963     /* always use generic keymaps */
 964     if (!keyboard_layout)
 965         keyboard_layout = "en-us";
 966 #endif
 967     if(keyboard_layout) {
 968         kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
 969         if (!kbd_layout)
 970             exit(1);
 971     }
 972
 973     if (no_frame)
 974         gui_noframe = 1;
 975
 976     if (!full_screen) {
 977         setenv("SDL_VIDEO_ALLOW_SCREENSAVER", "1", 0);
 978     }
 979 #ifdef __linux__
 980     /* on Linux, SDL may use fbcon|directfb|svgalib when run without
 981      * accessible $DISPLAY to open X11 window.  This is often the case
 982      * when qemu is run using sudo.  But in this case, and when actually
 983      * run in X11 environment, SDL fights with X11 for the video card,
 984      * making current display unavailable, often until reboot.
 985      * So make x11 the default SDL video driver if this variable is unset.
 986      * This is a bit hackish but saves us from bigger problem.
 987      * Maybe it's a good idea to fix this in SDL instead.
 988      */
 989     setenv("SDL_VIDEODRIVER", "x11", 0);
 990 #endif
 991
 992     /* Enable normal up/down events for Caps-Lock and Num-Lock keys.
 993      * This requires SDL >= 1.2.14. */
 994     setenv("SDL_DISABLE_LOCK_KEYS", "1", 1);
 995
 996     flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
 997     if (SDL_Init (flags)) {
 998         fprintf(stderr, "Could not initialize SDL(%s) - exiting\n",
 999                 SDL_GetError());
1000         exit(1);
1001     }
1002     vi = SDL_GetVideoInfo();
1003     host_format = *(vi->vfmt);
1004
1005     /* Load a 32x32x4 image. White pixels are transparent. */
1006     filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, "qemu-icon.bmp");
1007     if (filename) {
1008         SDL_Surface *image = SDL_LoadBMP(filename);
1009         if (image) {
1010             uint32_t colorkey = SDL_MapRGB(image->format, 255, 255, 255);
1011             SDL_SetColorKey(image, SDL_SRCCOLORKEY, colorkey);
1012             SDL_WM_SetIcon(image, NULL);
1013         }
1014         g_free(filename);
1015     }
1016
1017     if (full_screen) {
1018         gui_fullscreen = 1;
1019         sdl_grab_start();
1020     }
1021
1022     dcl = g_malloc0(sizeof(DisplayChangeListener));
1023     dcl->dpy_update = sdl_update;
1024     dcl->dpy_resize = sdl_resize;
1025     dcl->dpy_refresh = sdl_refresh;
1026     dcl->dpy_setdata = sdl_setdata;
1027     dcl->dpy_fill = sdl_fill;
1028     ds->mouse_set = sdl_mouse_warp;
1029     ds->cursor_define = sdl_mouse_define;
1030     register_displaychangelistener(ds, dcl);
1031
1032     da = g_malloc0(sizeof(DisplayAllocator));
1033     da->create_displaysurface = sdl_create_displaysurface;
1034     da->resize_displaysurface = sdl_resize_displaysurface;
1035     da->free_displaysurface = sdl_free_displaysurface;
1036     if (register_displayallocator(ds, da) == da) {
1037         dpy_resize(ds);
1038     }
1039
1040     mouse_mode_notifier.notify = sdl_mouse_mode_change;
1041     qemu_add_mouse_mode_change_notifier(&mouse_mode_notifier);
1042
1043     sdl_update_caption();
1044     SDL_EnableKeyRepeat(250, 50);
1045     gui_grab = 0;
1046
1047     sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
1048     sdl_cursor_normal = SDL_GetCursor();
1049
1050     atexit(sdl_cleanup);
1051 }