qemu/ui/sdl.c
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   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
  37static DisplayChangeListener *dcl;
  38static SDL_Surface *real_screen;
  39static SDL_Surface *guest_screen = NULL;
  40static int gui_grab; /* if true, all keyboard/mouse events are grabbed */
  41static int last_vm_running;
  42static bool gui_saved_scaling;
  43static int gui_saved_width;
  44static int gui_saved_height;
  45static int gui_saved_grab;
  46static int gui_fullscreen;
  47static int gui_noframe;
  48static int gui_key_modifier_pressed;
  49static int gui_keysym;
  50static int gui_grab_code = KMOD_LALT | KMOD_LCTRL;
  51static uint8_t modifiers_state[256];
  52static SDL_Cursor *sdl_cursor_normal;
  53static SDL_Cursor *sdl_cursor_hidden;
  54static int absolute_enabled = 0;
  55static int guest_cursor = 0;
  56static int guest_x, guest_y;
  57static SDL_Cursor *guest_sprite = NULL;
  58static uint8_t allocator;
  59static SDL_PixelFormat host_format;
  60static int scaling_active = 0;
  61static Notifier mouse_mode_notifier;
  62
  63static 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
  85static 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
  95static 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
 118static 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
 134static 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
 167static DisplaySurface* sdl_create_displaysurface(int width, int height)
 168{
 169    DisplaySurface *surface = (DisplaySurface*) g_malloc0(sizeof(DisplaySurface));
 170    if (surface == NULL) {
 171        fprintf(stderr, "sdl_create_displaysurface: malloc failed\n");
 172        exit(1);
 173    }
 174
 175    surface->width = width;
 176    surface->height = height;
 177
 178    if (scaling_active) {
 179        int linesize;
 180        PixelFormat pf;
 181        if (host_format.BytesPerPixel != 2 && host_format.BytesPerPixel != 4) {
 182            linesize = width * 4;
 183            pf = qemu_default_pixelformat(32);
 184        } else {
 185            linesize = width * host_format.BytesPerPixel;
 186            pf = sdl_to_qemu_pixelformat(&host_format);
 187        }
 188        qemu_alloc_display(surface, width, height, linesize, pf, 0);
 189        return surface;
 190    }
 191
 192    if (host_format.BitsPerPixel == 16)
 193        do_sdl_resize(width, height, 16);
 194    else
 195        do_sdl_resize(width, height, 32);
 196
 197    surface->pf = sdl_to_qemu_pixelformat(real_screen->format);
 198    surface->linesize = real_screen->pitch;
 199    surface->data = real_screen->pixels;
 200
 201#ifdef HOST_WORDS_BIGENDIAN
 202    surface->flags = QEMU_REALPIXELS_FLAG | QEMU_BIG_ENDIAN_FLAG;
 203#else
 204    surface->flags = QEMU_REALPIXELS_FLAG;
 205#endif
 206    allocator = 1;
 207
 208    return surface;
 209}
 210
 211static void sdl_free_displaysurface(DisplaySurface *surface)
 212{
 213    allocator = 0;
 214    if (surface == NULL)
 215        return;
 216
 217    if (surface->flags & QEMU_ALLOCATED_FLAG)
 218        g_free(surface->data);
 219    g_free(surface);
 220}
 221
 222static DisplaySurface* sdl_resize_displaysurface(DisplaySurface *surface, int width, int height)
 223{
 224    sdl_free_displaysurface(surface);
 225    return sdl_create_displaysurface(width, height);
 226}
 227
 228/* generic keyboard conversion */
 229
 230#include "sdl_keysym.h"
 231
 232static kbd_layout_t *kbd_layout = NULL;
 233
 234static uint8_t sdl_keyevent_to_keycode_generic(const SDL_KeyboardEvent *ev)
 235{
 236    int keysym;
 237    /* workaround for X11+SDL bug with AltGR */
 238    keysym = ev->keysym.sym;
 239    if (keysym == 0 && ev->keysym.scancode == 113)
 240        keysym = SDLK_MODE;
 241    /* For Japanese key '\' and '|' */
 242    if (keysym == 92 && ev->keysym.scancode == 133) {
 243        keysym = 0xa5;
 244    }
 245    return keysym2scancode(kbd_layout, keysym) & SCANCODE_KEYMASK;
 246}
 247
 248/* specific keyboard conversions from scan codes */
 249
 250#if defined(_WIN32)
 251
 252static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 253{
 254    return ev->keysym.scancode;
 255}
 256
 257#else
 258
 259#if defined(SDL_VIDEO_DRIVER_X11)
 260#include <X11/XKBlib.h>
 261
 262static int check_for_evdev(void)
 263{
 264    SDL_SysWMinfo info;
 265    XkbDescPtr desc = NULL;
 266    int has_evdev = 0;
 267    char *keycodes = NULL;
 268
 269    SDL_VERSION(&info.version);
 270    if (!SDL_GetWMInfo(&info)) {
 271        return 0;
 272    }
 273    desc = XkbGetKeyboard(info.info.x11.display,
 274                          XkbGBN_AllComponentsMask,
 275                          XkbUseCoreKbd);
 276    if (desc && desc->names) {
 277        keycodes = XGetAtomName(info.info.x11.display, desc->names->keycodes);
 278        if (keycodes == NULL) {
 279            fprintf(stderr, "could not lookup keycode name\n");
 280        } else if (strstart(keycodes, "evdev", NULL)) {
 281            has_evdev = 1;
 282        } else if (!strstart(keycodes, "xfree86", NULL)) {
 283            fprintf(stderr, "unknown keycodes `%s', please report to "
 284                    "qemu-devel@nongnu.org\n", keycodes);
 285        }
 286    }
 287
 288    if (desc) {
 289        XkbFreeKeyboard(desc, XkbGBN_AllComponentsMask, True);
 290    }
 291    if (keycodes) {
 292        XFree(keycodes);
 293    }
 294    return has_evdev;
 295}
 296#else
 297static int check_for_evdev(void)
 298{
 299        return 0;
 300}
 301#endif
 302
 303static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 304{
 305    int keycode;
 306    static int has_evdev = -1;
 307
 308    if (has_evdev == -1)
 309        has_evdev = check_for_evdev();
 310
 311    keycode = ev->keysym.scancode;
 312
 313    if (keycode < 9) {
 314        keycode = 0;
 315    } else if (keycode < 97) {
 316        keycode -= 8; /* just an offset */
 317    } else if (keycode < 158) {
 318        /* use conversion table */
 319        if (has_evdev)
 320            keycode = translate_evdev_keycode(keycode - 97);
 321        else
 322            keycode = translate_xfree86_keycode(keycode - 97);
 323    } else if (keycode == 208) { /* Hiragana_Katakana */
 324        keycode = 0x70;
 325    } else if (keycode == 211) { /* backslash */
 326        keycode = 0x73;
 327    } else {
 328        keycode = 0;
 329    }
 330    return keycode;
 331}
 332
 333#endif
 334
 335static void reset_keys(void)
 336{
 337    int i;
 338    for(i = 0; i < 256; i++) {
 339        if (modifiers_state[i]) {
 340            if (i & SCANCODE_GREY)
 341                kbd_put_keycode(SCANCODE_EMUL0);
 342            kbd_put_keycode(i | SCANCODE_UP);
 343            modifiers_state[i] = 0;
 344        }
 345    }
 346}
 347
 348static void sdl_process_key(SDL_KeyboardEvent *ev)
 349{
 350    int keycode, v;
 351
 352    if (ev->keysym.sym == SDLK_PAUSE) {
 353        /* specific case */
 354        v = 0;
 355        if (ev->type == SDL_KEYUP)
 356            v |= SCANCODE_UP;
 357        kbd_put_keycode(0xe1);
 358        kbd_put_keycode(0x1d | v);
 359        kbd_put_keycode(0x45 | v);
 360        return;
 361    }
 362
 363    if (kbd_layout) {
 364        keycode = sdl_keyevent_to_keycode_generic(ev);
 365    } else {
 366        keycode = sdl_keyevent_to_keycode(ev);
 367    }
 368
 369    switch(keycode) {
 370    case 0x00:
 371        /* sent when leaving window: reset the modifiers state */
 372        reset_keys();
 373        return;
 374    case 0x2a:                          /* Left Shift */
 375    case 0x36:                          /* Right Shift */
 376    case 0x1d:                          /* Left CTRL */
 377    case 0x9d:                          /* Right CTRL */
 378    case 0x38:                          /* Left ALT */
 379    case 0xb8:                         /* Right ALT */
 380        if (ev->type == SDL_KEYUP)
 381            modifiers_state[keycode] = 0;
 382        else
 383            modifiers_state[keycode] = 1;
 384        break;
 385#define QEMU_SDL_VERSION ((SDL_MAJOR_VERSION << 8) + SDL_MINOR_VERSION)
 386#if QEMU_SDL_VERSION < 0x102 || QEMU_SDL_VERSION == 0x102 && SDL_PATCHLEVEL < 14
 387        /* SDL versions before 1.2.14 don't support key up for caps/num lock. */
 388    case 0x45: /* num lock */
 389    case 0x3a: /* caps lock */
 390        /* SDL does not send the key up event, so we generate it */
 391        kbd_put_keycode(keycode);
 392        kbd_put_keycode(keycode | SCANCODE_UP);
 393        return;
 394#endif
 395    }
 396
 397    /* now send the key code */
 398    if (keycode & SCANCODE_GREY)
 399        kbd_put_keycode(SCANCODE_EMUL0);
 400    if (ev->type == SDL_KEYUP)
 401        kbd_put_keycode(keycode | SCANCODE_UP);
 402    else
 403        kbd_put_keycode(keycode & SCANCODE_KEYCODEMASK);
 404}
 405
 406static void sdl_update_caption(void)
 407{
 408    char win_title[1024];
 409    char icon_title[1024];
 410    const char *status = "";
 411
 412    if (!runstate_is_running())
 413        status = " [Stopped]";
 414    else if (gui_grab) {
 415        if (alt_grab)
 416            status = " - Press Ctrl-Alt-Shift to exit mouse grab";
 417        else if (ctrl_grab)
 418            status = " - Press Right-Ctrl to exit mouse grab";
 419        else
 420            status = " - Press Ctrl-Alt to exit mouse grab";
 421    }
 422
 423    if (qemu_name) {
 424        snprintf(win_title, sizeof(win_title), "QEMU (%s)%s", qemu_name, status);
 425        snprintf(icon_title, sizeof(icon_title), "QEMU (%s)", qemu_name);
 426    } else {
 427        snprintf(win_title, sizeof(win_title), "QEMU%s", status);
 428        snprintf(icon_title, sizeof(icon_title), "QEMU");
 429    }
 430
 431    SDL_WM_SetCaption(win_title, icon_title);
 432}
 433
 434static void sdl_hide_cursor(void)
 435{
 436    if (!cursor_hide)
 437        return;
 438
 439    if (kbd_mouse_is_absolute()) {
 440        SDL_ShowCursor(1);
 441        SDL_SetCursor(sdl_cursor_hidden);
 442    } else {
 443        SDL_ShowCursor(0);
 444    }
 445}
 446
 447static void sdl_show_cursor(void)
 448{
 449    if (!cursor_hide)
 450        return;
 451
 452    if (!kbd_mouse_is_absolute() || !is_graphic_console()) {
 453        SDL_ShowCursor(1);
 454        if (guest_cursor &&
 455                (gui_grab || kbd_mouse_is_absolute() || absolute_enabled))
 456            SDL_SetCursor(guest_sprite);
 457        else
 458            SDL_SetCursor(sdl_cursor_normal);
 459    }
 460}
 461
 462static void sdl_grab_start(void)
 463{
 464    if (guest_cursor) {
 465        SDL_SetCursor(guest_sprite);
 466        if (!kbd_mouse_is_absolute() && !absolute_enabled)
 467            SDL_WarpMouse(guest_x, guest_y);
 468    } else
 469        sdl_hide_cursor();
 470
 471    if (SDL_WM_GrabInput(SDL_GRAB_ON) == SDL_GRAB_ON) {
 472        gui_grab = 1;
 473        sdl_update_caption();
 474    } else
 475        sdl_show_cursor();
 476}
 477
 478static void sdl_grab_end(void)
 479{
 480    SDL_WM_GrabInput(SDL_GRAB_OFF);
 481    gui_grab = 0;
 482    sdl_show_cursor();
 483    sdl_update_caption();
 484}
 485
 486static void sdl_mouse_mode_change(Notifier *notify, void *data)
 487{
 488    if (kbd_mouse_is_absolute()) {
 489        if (!absolute_enabled) {
 490            sdl_grab_start();
 491            absolute_enabled = 1;
 492        }
 493    } else if (absolute_enabled) {
 494        if (!gui_fullscreen) {
 495            sdl_grab_end();
 496        }
 497        absolute_enabled = 0;
 498    }
 499}
 500
 501static void sdl_send_mouse_event(int dx, int dy, int dz, int x, int y, int state)
 502{
 503    int buttons = 0;
 504
 505    if (state & SDL_BUTTON(SDL_BUTTON_LEFT)) {
 506        buttons |= MOUSE_EVENT_LBUTTON;
 507    }
 508    if (state & SDL_BUTTON(SDL_BUTTON_RIGHT)) {
 509        buttons |= MOUSE_EVENT_RBUTTON;
 510    }
 511    if (state & SDL_BUTTON(SDL_BUTTON_MIDDLE)) {
 512        buttons |= MOUSE_EVENT_MBUTTON;
 513    }
 514
 515    if (kbd_mouse_is_absolute()) {
 516        dx = x * 0x7FFF / (real_screen->w - 1);
 517        dy = y * 0x7FFF / (real_screen->h - 1);
 518    } else if (guest_cursor) {
 519        x -= guest_x;
 520        y -= guest_y;
 521        guest_x += x;
 522        guest_y += y;
 523        dx = x;
 524        dy = y;
 525    }
 526
 527    kbd_mouse_event(dx, dy, dz, buttons);
 528}
 529
 530static void sdl_scale(DisplayState *ds, int width, int height)
 531{
 532    int bpp = real_screen->format->BitsPerPixel;
 533
 534    if (bpp != 16 && bpp != 32) {
 535        bpp = 32;
 536    }
 537    do_sdl_resize(width, height, bpp);
 538    scaling_active = 1;
 539    if (!is_buffer_shared(ds->surface)) {
 540        ds->surface = qemu_resize_displaysurface(ds, ds_get_width(ds),
 541                                                 ds_get_height(ds));
 542        dpy_resize(ds);
 543    }
 544}
 545
 546static void toggle_full_screen(DisplayState *ds)
 547{
 548    gui_fullscreen = !gui_fullscreen;
 549    if (gui_fullscreen) {
 550        gui_saved_width = real_screen->w;
 551        gui_saved_height = real_screen->h;
 552        gui_saved_scaling = scaling_active;
 553
 554        do_sdl_resize(ds_get_width(ds), ds_get_height(ds),
 555                      ds_get_bits_per_pixel(ds));
 556        scaling_active = 0;
 557
 558        gui_saved_grab = gui_grab;
 559        sdl_grab_start();
 560    } else {
 561        if (gui_saved_scaling) {
 562            sdl_scale(ds, gui_saved_width, gui_saved_height);
 563        } else {
 564            do_sdl_resize(ds_get_width(ds), ds_get_height(ds), 0);
 565        }
 566        if (!gui_saved_grab || !is_graphic_console()) {
 567            sdl_grab_end();
 568        }
 569    }
 570    vga_hw_invalidate();
 571    vga_hw_update();
 572}
 573
 574static void absolute_mouse_grab(void)
 575{
 576    int mouse_x, mouse_y;
 577
 578    if (SDL_GetAppState() & SDL_APPINPUTFOCUS) {
 579        SDL_GetMouseState(&mouse_x, &mouse_y);
 580        if (mouse_x > 0 && mouse_x < real_screen->w - 1 &&
 581            mouse_y > 0 && mouse_y < real_screen->h - 1) {
 582            sdl_grab_start();
 583        }
 584    }
 585}
 586
 587static void handle_keydown(DisplayState *ds, SDL_Event *ev)
 588{
 589    int mod_state;
 590    int keycode;
 591
 592    if (alt_grab) {
 593        mod_state = (SDL_GetModState() & (gui_grab_code | KMOD_LSHIFT)) ==
 594                    (gui_grab_code | KMOD_LSHIFT);
 595    } else if (ctrl_grab) {
 596        mod_state = (SDL_GetModState() & KMOD_RCTRL) == KMOD_RCTRL;
 597    } else {
 598        mod_state = (SDL_GetModState() & gui_grab_code) == gui_grab_code;
 599    }
 600    gui_key_modifier_pressed = mod_state;
 601
 602    if (gui_key_modifier_pressed) {
 603        keycode = sdl_keyevent_to_keycode(&ev->key);
 604        switch (keycode) {
 605        case 0x21: /* 'f' key on US keyboard */
 606            toggle_full_screen(ds);
 607            gui_keysym = 1;
 608            break;
 609        case 0x16: /* 'u' key on US keyboard */
 610            if (scaling_active) {
 611                scaling_active = 0;
 612                sdl_resize(ds);
 613                vga_hw_invalidate();
 614                vga_hw_update();
 615            }
 616            gui_keysym = 1;
 617            break;
 618        case 0x02 ... 0x0a: /* '1' to '9' keys */
 619            /* Reset the modifiers sent to the current console */
 620            reset_keys();
 621            console_select(keycode - 0x02);
 622            gui_keysym = 1;
 623            if (gui_fullscreen) {
 624                break;
 625            }
 626            if (!is_graphic_console()) {
 627                /* release grab if going to a text console */
 628                if (gui_grab) {
 629                    sdl_grab_end();
 630                } else if (absolute_enabled) {
 631                    sdl_show_cursor();
 632                }
 633            } else if (absolute_enabled) {
 634                sdl_hide_cursor();
 635                absolute_mouse_grab();
 636            }
 637            break;
 638        case 0x1b: /* '+' */
 639        case 0x35: /* '-' */
 640            if (!gui_fullscreen) {
 641                int width = MAX(real_screen->w + (keycode == 0x1b ? 50 : -50),
 642                                160);
 643                int height = (ds_get_height(ds) * width) / ds_get_width(ds);
 644
 645                sdl_scale(ds, width, height);
 646                vga_hw_invalidate();
 647                vga_hw_update();
 648                gui_keysym = 1;
 649            }
 650        default:
 651            break;
 652        }
 653    } else if (!is_graphic_console()) {
 654        int keysym = 0;
 655
 656        if (ev->key.keysym.mod & (KMOD_LCTRL | KMOD_RCTRL)) {
 657            switch (ev->key.keysym.sym) {
 658            case SDLK_UP:
 659                keysym = QEMU_KEY_CTRL_UP;
 660                break;
 661            case SDLK_DOWN:
 662                keysym = QEMU_KEY_CTRL_DOWN;
 663                break;
 664            case SDLK_LEFT:
 665                keysym = QEMU_KEY_CTRL_LEFT;
 666                break;
 667            case SDLK_RIGHT:
 668                keysym = QEMU_KEY_CTRL_RIGHT;
 669                break;
 670            case SDLK_HOME:
 671                keysym = QEMU_KEY_CTRL_HOME;
 672                break;
 673            case SDLK_END:
 674                keysym = QEMU_KEY_CTRL_END;
 675                break;
 676            case SDLK_PAGEUP:
 677                keysym = QEMU_KEY_CTRL_PAGEUP;
 678                break;
 679            case SDLK_PAGEDOWN:
 680                keysym = QEMU_KEY_CTRL_PAGEDOWN;
 681                break;
 682            default:
 683                break;
 684            }
 685        } else {
 686            switch (ev->key.keysym.sym) {
 687            case SDLK_UP:
 688                keysym = QEMU_KEY_UP;
 689                break;
 690            case SDLK_DOWN:
 691                keysym = QEMU_KEY_DOWN;
 692                break;
 693            case SDLK_LEFT:
 694                keysym = QEMU_KEY_LEFT;
 695                break;
 696            case SDLK_RIGHT:
 697                keysym = QEMU_KEY_RIGHT;
 698                break;
 699            case SDLK_HOME:
 700                keysym = QEMU_KEY_HOME;
 701                break;
 702            case SDLK_END:
 703                keysym = QEMU_KEY_END;
 704                break;
 705            case SDLK_PAGEUP:
 706                keysym = QEMU_KEY_PAGEUP;
 707                break;
 708            case SDLK_PAGEDOWN:
 709                keysym = QEMU_KEY_PAGEDOWN;
 710                break;
 711            case SDLK_BACKSPACE:
 712                keysym = QEMU_KEY_BACKSPACE;
 713                break;
 714            case SDLK_DELETE:
 715                keysym = QEMU_KEY_DELETE;
 716                break;
 717            default:
 718                break;
 719            }
 720        }
 721        if (keysym) {
 722            kbd_put_keysym(keysym);
 723        } else if (ev->key.keysym.unicode != 0) {
 724            kbd_put_keysym(ev->key.keysym.unicode);
 725        }
 726    }
 727    if (is_graphic_console() && !gui_keysym) {
 728        sdl_process_key(&ev->key);
 729    }
 730}
 731
 732static void handle_keyup(DisplayState *ds, SDL_Event *ev)
 733{
 734    int mod_state;
 735
 736    if (!alt_grab) {
 737        mod_state = (ev->key.keysym.mod & gui_grab_code);
 738    } else {
 739        mod_state = (ev->key.keysym.mod & (gui_grab_code | KMOD_LSHIFT));
 740    }
 741    if (!mod_state && gui_key_modifier_pressed) {
 742        gui_key_modifier_pressed = 0;
 743        if (gui_keysym == 0) {
 744            /* exit/enter grab if pressing Ctrl-Alt */
 745            if (!gui_grab) {
 746                /* If the application is not active, do not try to enter grab
 747                 * state. It prevents 'SDL_WM_GrabInput(SDL_GRAB_ON)' from
 748                 * blocking all the application (SDL bug). */
 749                if (is_graphic_console() &&
 750                    SDL_GetAppState() & SDL_APPACTIVE) {
 751                    sdl_grab_start();
 752                }
 753            } else if (!gui_fullscreen) {
 754                sdl_grab_end();
 755            }
 756            /* SDL does not send back all the modifiers key, so we must
 757             * correct it. */
 758            reset_keys();
 759            return;
 760        }
 761        gui_keysym = 0;
 762    }
 763    if (is_graphic_console() && !gui_keysym) {
 764        sdl_process_key(&ev->key);
 765    }
 766}
 767
 768static void handle_mousemotion(DisplayState *ds, SDL_Event *ev)
 769{
 770    int max_x, max_y;
 771
 772    if (is_graphic_console() &&
 773        (kbd_mouse_is_absolute() || absolute_enabled)) {
 774        max_x = real_screen->w - 1;
 775        max_y = real_screen->h - 1;
 776        if (gui_grab && (ev->motion.x == 0 || ev->motion.y == 0 ||
 777            ev->motion.x == max_x || ev->motion.y == max_y)) {
 778            sdl_grab_end();
 779        }
 780        if (!gui_grab && SDL_GetAppState() & SDL_APPINPUTFOCUS &&
 781            (ev->motion.x > 0 && ev->motion.x < max_x &&
 782            ev->motion.y > 0 && ev->motion.y < max_y)) {
 783            sdl_grab_start();
 784        }
 785    }
 786    if (gui_grab || kbd_mouse_is_absolute() || absolute_enabled) {
 787        sdl_send_mouse_event(ev->motion.xrel, ev->motion.yrel, 0,
 788                             ev->motion.x, ev->motion.y, ev->motion.state);
 789    }
 790}
 791
 792static void handle_mousebutton(DisplayState *ds, SDL_Event *ev)
 793{
 794    int buttonstate = SDL_GetMouseState(NULL, NULL);
 795    SDL_MouseButtonEvent *bev;
 796    int dz;
 797
 798    if (!is_graphic_console()) {
 799        return;
 800    }
 801
 802    bev = &ev->button;
 803    if (!gui_grab && !kbd_mouse_is_absolute()) {
 804        if (ev->type == SDL_MOUSEBUTTONDOWN &&
 805            (bev->button == SDL_BUTTON_LEFT)) {
 806            /* start grabbing all events */
 807            sdl_grab_start();
 808        }
 809    } else {
 810        dz = 0;
 811        if (ev->type == SDL_MOUSEBUTTONDOWN) {
 812            buttonstate |= SDL_BUTTON(bev->button);
 813        } else {
 814            buttonstate &= ~SDL_BUTTON(bev->button);
 815        }
 816#ifdef SDL_BUTTON_WHEELUP
 817        if (bev->button == SDL_BUTTON_WHEELUP &&
 818            ev->type == SDL_MOUSEBUTTONDOWN) {
 819            dz = -1;
 820        } else if (bev->button == SDL_BUTTON_WHEELDOWN &&
 821                   ev->type == SDL_MOUSEBUTTONDOWN) {
 822            dz = 1;
 823        }
 824#endif
 825        sdl_send_mouse_event(0, 0, dz, bev->x, bev->y, buttonstate);
 826    }
 827}
 828
 829static void handle_activation(DisplayState *ds, SDL_Event *ev)
 830{
 831    if (gui_grab && ev->active.state == SDL_APPINPUTFOCUS &&
 832        !ev->active.gain && !gui_fullscreen) {
 833        sdl_grab_end();
 834    }
 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
 852static 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
 902static 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
 908static 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
 924static 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
 947static void sdl_cleanup(void)
 948{
 949    if (guest_sprite)
 950        SDL_FreeCursor(guest_sprite);
 951    SDL_QuitSubSystem(SDL_INIT_VIDEO);
 952}
 953
 954void 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}
1052