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 "ui/console.h"
  33#include "ui/input.h"
  34#include "sysemu/sysemu.h"
  35#include "x_keymap.h"
  36#include "sdl_zoom.h"
  37
  38static DisplayChangeListener *dcl;
  39static DisplaySurface *surface;
  40static SDL_Surface *real_screen;
  41static SDL_Surface *guest_screen = NULL;
  42static int gui_grab; /* if true, all keyboard/mouse events are grabbed */
  43static int last_vm_running;
  44static bool gui_saved_scaling;
  45static int gui_saved_width;
  46static int gui_saved_height;
  47static int gui_saved_grab;
  48static int gui_fullscreen;
  49static int gui_noframe;
  50static int gui_key_modifier_pressed;
  51static int gui_keysym;
  52static int gui_grab_code = KMOD_LALT | KMOD_LCTRL;
  53static uint8_t modifiers_state[256];
  54static SDL_Cursor *sdl_cursor_normal;
  55static SDL_Cursor *sdl_cursor_hidden;
  56static int absolute_enabled = 0;
  57static int guest_cursor = 0;
  58static int guest_x, guest_y;
  59static SDL_Cursor *guest_sprite = NULL;
  60static SDL_PixelFormat host_format;
  61static int scaling_active = 0;
  62static Notifier mouse_mode_notifier;
  63
  64#if 0
  65#define DEBUG_SDL
  66#endif
  67
  68static void sdl_update(DisplayChangeListener *dcl,
  69                       int x, int y, int w, int h)
  70{
  71    SDL_Rect rec;
  72    rec.x = x;
  73    rec.y = y;
  74    rec.w = w;
  75    rec.h = h;
  76
  77#ifdef DEBUG_SDL
  78    printf("SDL: Updating x=%d y=%d w=%d h=%d (scaling: %d)\n",
  79           x, y, w, h, scaling_active);
  80#endif
  81
  82    if (guest_screen) {
  83        if (!scaling_active) {
  84            SDL_BlitSurface(guest_screen, &rec, real_screen, &rec);
  85        } else {
  86            if (sdl_zoom_blit(guest_screen, real_screen, SMOOTHING_ON, &rec) < 0) {
  87                fprintf(stderr, "Zoom blit failed\n");
  88                exit(1);
  89            }
  90        }
  91    } 
  92    SDL_UpdateRect(real_screen, rec.x, rec.y, rec.w, rec.h);
  93}
  94
  95static void do_sdl_resize(int width, int height, int bpp)
  96{
  97    int flags;
  98    SDL_Surface *tmp_screen;
  99
 100#ifdef DEBUG_SDL
 101    printf("SDL: Resizing to %dx%d bpp %d\n", width, height, bpp);
 102#endif
 103
 104    flags = SDL_HWSURFACE | SDL_ASYNCBLIT | SDL_HWACCEL;
 105    if (gui_fullscreen) {
 106        flags |= SDL_FULLSCREEN;
 107    } else {
 108        flags |= SDL_RESIZABLE;
 109    }
 110    if (gui_noframe)
 111        flags |= SDL_NOFRAME;
 112
 113    tmp_screen = SDL_SetVideoMode(width, height, bpp, flags);
 114    if (!real_screen) {
 115        if (!tmp_screen) {
 116            fprintf(stderr, "Could not open SDL display (%dx%dx%d): %s\n",
 117                    width, height, bpp, SDL_GetError());
 118            exit(1);
 119        }
 120    } else {
 121        /*
 122         * Revert to the previous video mode if the change of resizing or
 123         * resolution failed.
 124         */
 125        if (!tmp_screen) {
 126            fprintf(stderr, "Failed to set SDL display (%dx%dx%d): %s\n",
 127                    width, height, bpp, SDL_GetError());
 128            return;
 129        }
 130    }
 131
 132    real_screen = tmp_screen;
 133}
 134
 135static void sdl_switch(DisplayChangeListener *dcl,
 136                       DisplaySurface *new_surface)
 137{
 138    PixelFormat pf;
 139
 140    /* temporary hack: allows to call sdl_switch to handle scaling changes */
 141    if (new_surface) {
 142        surface = new_surface;
 143    }
 144    pf = qemu_pixelformat_from_pixman(surface->format);
 145
 146    if (!scaling_active) {
 147        do_sdl_resize(surface_width(surface), surface_height(surface), 0);
 148    } else if (real_screen->format->BitsPerPixel !=
 149               surface_bits_per_pixel(surface)) {
 150        do_sdl_resize(real_screen->w, real_screen->h,
 151                      surface_bits_per_pixel(surface));
 152    }
 153
 154    if (guest_screen != NULL) {
 155        SDL_FreeSurface(guest_screen);
 156    }
 157
 158#ifdef DEBUG_SDL
 159    printf("SDL: Creating surface with masks: %08x %08x %08x %08x\n",
 160           pf.rmask, pf.gmask, pf.bmask, pf.amask);
 161#endif
 162
 163    guest_screen = SDL_CreateRGBSurfaceFrom
 164        (surface_data(surface),
 165         surface_width(surface), surface_height(surface),
 166         surface_bits_per_pixel(surface), surface_stride(surface),
 167         pf.rmask, pf.gmask,
 168         pf.bmask, pf.amask);
 169}
 170
 171static bool sdl_check_format(DisplayChangeListener *dcl,
 172                             pixman_format_code_t format)
 173{
 174    /*
 175     * We let SDL convert for us a few more formats than,
 176     * the native ones. Thes are the ones I have tested.
 177     */
 178    return (format == PIXMAN_x8r8g8b8 ||
 179            format == PIXMAN_b8g8r8x8 ||
 180            format == PIXMAN_x1r5g5b5 ||
 181            format == PIXMAN_r5g6b5);
 182}
 183
 184/* generic keyboard conversion */
 185
 186#include "sdl_keysym.h"
 187
 188static kbd_layout_t *kbd_layout = NULL;
 189
 190static uint8_t sdl_keyevent_to_keycode_generic(const SDL_KeyboardEvent *ev)
 191{
 192    int keysym;
 193    /* workaround for X11+SDL bug with AltGR */
 194    keysym = ev->keysym.sym;
 195    if (keysym == 0 && ev->keysym.scancode == 113)
 196        keysym = SDLK_MODE;
 197    /* For Japanese key '\' and '|' */
 198    if (keysym == 92 && ev->keysym.scancode == 133) {
 199        keysym = 0xa5;
 200    }
 201    return keysym2scancode(kbd_layout, keysym) & SCANCODE_KEYMASK;
 202}
 203
 204/* specific keyboard conversions from scan codes */
 205
 206#if defined(_WIN32)
 207
 208static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 209{
 210    return ev->keysym.scancode;
 211}
 212
 213#else
 214
 215#if defined(SDL_VIDEO_DRIVER_X11)
 216#include <X11/XKBlib.h>
 217
 218static int check_for_evdev(void)
 219{
 220    SDL_SysWMinfo info;
 221    XkbDescPtr desc = NULL;
 222    int has_evdev = 0;
 223    char *keycodes = NULL;
 224
 225    SDL_VERSION(&info.version);
 226    if (!SDL_GetWMInfo(&info)) {
 227        return 0;
 228    }
 229    desc = XkbGetKeyboard(info.info.x11.display,
 230                          XkbGBN_AllComponentsMask,
 231                          XkbUseCoreKbd);
 232    if (desc && desc->names) {
 233        keycodes = XGetAtomName(info.info.x11.display, desc->names->keycodes);
 234        if (keycodes == NULL) {
 235            fprintf(stderr, "could not lookup keycode name\n");
 236        } else if (strstart(keycodes, "evdev", NULL)) {
 237            has_evdev = 1;
 238        } else if (!strstart(keycodes, "xfree86", NULL)) {
 239            fprintf(stderr, "unknown keycodes `%s', please report to "
 240                    "qemu-devel@nongnu.org\n", keycodes);
 241        }
 242    }
 243
 244    if (desc) {
 245        XkbFreeKeyboard(desc, XkbGBN_AllComponentsMask, True);
 246    }
 247    if (keycodes) {
 248        XFree(keycodes);
 249    }
 250    return has_evdev;
 251}
 252#else
 253static int check_for_evdev(void)
 254{
 255        return 0;
 256}
 257#endif
 258
 259static uint8_t sdl_keyevent_to_keycode(const SDL_KeyboardEvent *ev)
 260{
 261    int keycode;
 262    static int has_evdev = -1;
 263
 264    if (has_evdev == -1)
 265        has_evdev = check_for_evdev();
 266
 267    keycode = ev->keysym.scancode;
 268
 269    if (keycode < 9) {
 270        keycode = 0;
 271    } else if (keycode < 97) {
 272        keycode -= 8; /* just an offset */
 273    } else if (keycode < 158) {
 274        /* use conversion table */
 275        if (has_evdev)
 276            keycode = translate_evdev_keycode(keycode - 97);
 277        else
 278            keycode = translate_xfree86_keycode(keycode - 97);
 279    } else if (keycode == 208) { /* Hiragana_Katakana */
 280        keycode = 0x70;
 281    } else if (keycode == 211) { /* backslash */
 282        keycode = 0x73;
 283    } else {
 284        keycode = 0;
 285    }
 286    return keycode;
 287}
 288
 289#endif
 290
 291static void reset_keys(void)
 292{
 293    int i;
 294    for(i = 0; i < 256; i++) {
 295        if (modifiers_state[i]) {
 296            qemu_input_event_send_key_number(dcl->con, i, false);
 297            modifiers_state[i] = 0;
 298        }
 299    }
 300}
 301
 302static void sdl_process_key(SDL_KeyboardEvent *ev)
 303{
 304    int keycode;
 305
 306    if (ev->keysym.sym == SDLK_PAUSE) {
 307        /* specific case */
 308        qemu_input_event_send_key_qcode(dcl->con, Q_KEY_CODE_PAUSE,
 309                                        ev->type == SDL_KEYDOWN);
 310        return;
 311    }
 312
 313    if (kbd_layout) {
 314        keycode = sdl_keyevent_to_keycode_generic(ev);
 315    } else {
 316        keycode = sdl_keyevent_to_keycode(ev);
 317    }
 318
 319    switch(keycode) {
 320    case 0x00:
 321        /* sent when leaving window: reset the modifiers state */
 322        reset_keys();
 323        return;
 324    case 0x2a:                          /* Left Shift */
 325    case 0x36:                          /* Right Shift */
 326    case 0x1d:                          /* Left CTRL */
 327    case 0x9d:                          /* Right CTRL */
 328    case 0x38:                          /* Left ALT */
 329    case 0xb8:                         /* Right ALT */
 330        if (ev->type == SDL_KEYUP)
 331            modifiers_state[keycode] = 0;
 332        else
 333            modifiers_state[keycode] = 1;
 334        break;
 335#define QEMU_SDL_VERSION ((SDL_MAJOR_VERSION << 8) + SDL_MINOR_VERSION)
 336#if QEMU_SDL_VERSION < 0x102 || QEMU_SDL_VERSION == 0x102 && SDL_PATCHLEVEL < 14
 337        /* SDL versions before 1.2.14 don't support key up for caps/num lock. */
 338    case 0x45: /* num lock */
 339    case 0x3a: /* caps lock */
 340        /* SDL does not send the key up event, so we generate it */
 341        qemu_input_event_send_key_number(dcl->con, keycode, true);
 342        qemu_input_event_send_key_number(dcl->con, keycode, false);
 343        return;
 344#endif
 345    }
 346
 347    /* now send the key code */
 348    qemu_input_event_send_key_number(dcl->con, keycode,
 349                                     ev->type == SDL_KEYDOWN);
 350}
 351
 352static void sdl_update_caption(void)
 353{
 354    char win_title[1024];
 355    char icon_title[1024];
 356    const char *status = "";
 357
 358    if (!runstate_is_running())
 359        status = " [Stopped]";
 360    else if (gui_grab) {
 361        if (alt_grab)
 362            status = " - Press Ctrl-Alt-Shift to exit mouse grab";
 363        else if (ctrl_grab)
 364            status = " - Press Right-Ctrl to exit mouse grab";
 365        else
 366            status = " - Press Ctrl-Alt to exit mouse grab";
 367    }
 368
 369    if (qemu_name) {
 370        snprintf(win_title, sizeof(win_title), "QEMU (%s)%s", qemu_name, status);
 371        snprintf(icon_title, sizeof(icon_title), "QEMU (%s)", qemu_name);
 372    } else {
 373        snprintf(win_title, sizeof(win_title), "QEMU%s", status);
 374        snprintf(icon_title, sizeof(icon_title), "QEMU");
 375    }
 376
 377    SDL_WM_SetCaption(win_title, icon_title);
 378}
 379
 380static void sdl_hide_cursor(void)
 381{
 382    if (!cursor_hide)
 383        return;
 384
 385    if (qemu_input_is_absolute()) {
 386        SDL_ShowCursor(1);
 387        SDL_SetCursor(sdl_cursor_hidden);
 388    } else {
 389        SDL_ShowCursor(0);
 390    }
 391}
 392
 393static void sdl_show_cursor(void)
 394{
 395    if (!cursor_hide)
 396        return;
 397
 398    if (!qemu_input_is_absolute() || !qemu_console_is_graphic(NULL)) {
 399        SDL_ShowCursor(1);
 400        if (guest_cursor &&
 401                (gui_grab || qemu_input_is_absolute() || absolute_enabled))
 402            SDL_SetCursor(guest_sprite);
 403        else
 404            SDL_SetCursor(sdl_cursor_normal);
 405    }
 406}
 407
 408static void sdl_grab_start(void)
 409{
 410    /*
 411     * If the application is not active, do not try to enter grab state. This
 412     * prevents 'SDL_WM_GrabInput(SDL_GRAB_ON)' from blocking all the
 413     * application (SDL bug).
 414     */
 415    if (!(SDL_GetAppState() & SDL_APPINPUTFOCUS)) {
 416        return;
 417    }
 418    if (guest_cursor) {
 419        SDL_SetCursor(guest_sprite);
 420        if (!qemu_input_is_absolute() && !absolute_enabled) {
 421            SDL_WarpMouse(guest_x, guest_y);
 422        }
 423    } else
 424        sdl_hide_cursor();
 425    SDL_WM_GrabInput(SDL_GRAB_ON);
 426    gui_grab = 1;
 427    sdl_update_caption();
 428}
 429
 430static void sdl_grab_end(void)
 431{
 432    SDL_WM_GrabInput(SDL_GRAB_OFF);
 433    gui_grab = 0;
 434    sdl_show_cursor();
 435    sdl_update_caption();
 436}
 437
 438static void absolute_mouse_grab(void)
 439{
 440    int mouse_x, mouse_y;
 441
 442    SDL_GetMouseState(&mouse_x, &mouse_y);
 443    if (mouse_x > 0 && mouse_x < real_screen->w - 1 &&
 444        mouse_y > 0 && mouse_y < real_screen->h - 1) {
 445        sdl_grab_start();
 446    }
 447}
 448
 449static void sdl_mouse_mode_change(Notifier *notify, void *data)
 450{
 451    if (qemu_input_is_absolute()) {
 452        if (!absolute_enabled) {
 453            absolute_enabled = 1;
 454            if (qemu_console_is_graphic(NULL)) {
 455                absolute_mouse_grab();
 456            }
 457        }
 458    } else if (absolute_enabled) {
 459        if (!gui_fullscreen) {
 460            sdl_grab_end();
 461        }
 462        absolute_enabled = 0;
 463    }
 464}
 465
 466static void sdl_send_mouse_event(int dx, int dy, int x, int y, int state)
 467{
 468    static uint32_t bmap[INPUT_BUTTON_MAX] = {
 469        [INPUT_BUTTON_LEFT]       = SDL_BUTTON(SDL_BUTTON_LEFT),
 470        [INPUT_BUTTON_MIDDLE]     = SDL_BUTTON(SDL_BUTTON_MIDDLE),
 471        [INPUT_BUTTON_RIGHT]      = SDL_BUTTON(SDL_BUTTON_RIGHT),
 472        [INPUT_BUTTON_WHEEL_UP]   = SDL_BUTTON(SDL_BUTTON_WHEELUP),
 473        [INPUT_BUTTON_WHEEL_DOWN] = SDL_BUTTON(SDL_BUTTON_WHEELDOWN),
 474    };
 475    static uint32_t prev_state;
 476
 477    if (prev_state != state) {
 478        qemu_input_update_buttons(dcl->con, bmap, prev_state, state);
 479        prev_state = state;
 480    }
 481
 482    if (qemu_input_is_absolute()) {
 483        qemu_input_queue_abs(dcl->con, INPUT_AXIS_X, x,
 484                             real_screen->w);
 485        qemu_input_queue_abs(dcl->con, INPUT_AXIS_Y, y,
 486                             real_screen->h);
 487    } else {
 488        if (guest_cursor) {
 489            x -= guest_x;
 490            y -= guest_y;
 491            guest_x += x;
 492            guest_y += y;
 493            dx = x;
 494            dy = y;
 495        }
 496        qemu_input_queue_rel(dcl->con, INPUT_AXIS_X, dx);
 497        qemu_input_queue_rel(dcl->con, INPUT_AXIS_Y, dy);
 498    }
 499    qemu_input_event_sync();
 500}
 501
 502static void sdl_scale(int width, int height)
 503{
 504    int bpp = real_screen->format->BitsPerPixel;
 505
 506#ifdef DEBUG_SDL
 507    printf("SDL: Scaling to %dx%d bpp %d\n", width, height, bpp);
 508#endif
 509
 510    if (bpp != 16 && bpp != 32) {
 511        bpp = 32;
 512    }
 513    do_sdl_resize(width, height, bpp);
 514    scaling_active = 1;
 515}
 516
 517static void toggle_full_screen(void)
 518{
 519    int width = surface_width(surface);
 520    int height = surface_height(surface);
 521    int bpp = surface_bits_per_pixel(surface);
 522
 523    gui_fullscreen = !gui_fullscreen;
 524    if (gui_fullscreen) {
 525        gui_saved_width = real_screen->w;
 526        gui_saved_height = real_screen->h;
 527        gui_saved_scaling = scaling_active;
 528
 529        do_sdl_resize(width, height, bpp);
 530        scaling_active = 0;
 531
 532        gui_saved_grab = gui_grab;
 533        sdl_grab_start();
 534    } else {
 535        if (gui_saved_scaling) {
 536            sdl_scale(gui_saved_width, gui_saved_height);
 537        } else {
 538            do_sdl_resize(width, height, 0);
 539        }
 540        if (!gui_saved_grab || !qemu_console_is_graphic(NULL)) {
 541            sdl_grab_end();
 542        }
 543    }
 544    graphic_hw_invalidate(NULL);
 545    graphic_hw_update(NULL);
 546}
 547
 548static void handle_keydown(SDL_Event *ev)
 549{
 550    int mod_state;
 551    int keycode;
 552
 553    if (alt_grab) {
 554        mod_state = (SDL_GetModState() & (gui_grab_code | KMOD_LSHIFT)) ==
 555                    (gui_grab_code | KMOD_LSHIFT);
 556    } else if (ctrl_grab) {
 557        mod_state = (SDL_GetModState() & KMOD_RCTRL) == KMOD_RCTRL;
 558    } else {
 559        mod_state = (SDL_GetModState() & gui_grab_code) == gui_grab_code;
 560    }
 561    gui_key_modifier_pressed = mod_state;
 562
 563    if (gui_key_modifier_pressed) {
 564        keycode = sdl_keyevent_to_keycode(&ev->key);
 565        switch (keycode) {
 566        case 0x21: /* 'f' key on US keyboard */
 567            toggle_full_screen();
 568            gui_keysym = 1;
 569            break;
 570        case 0x16: /* 'u' key on US keyboard */
 571            if (scaling_active) {
 572                scaling_active = 0;
 573                sdl_switch(dcl, NULL);
 574                graphic_hw_invalidate(NULL);
 575                graphic_hw_update(NULL);
 576            }
 577            gui_keysym = 1;
 578            break;
 579        case 0x02 ... 0x0a: /* '1' to '9' keys */
 580            /* Reset the modifiers sent to the current console */
 581            reset_keys();
 582            console_select(keycode - 0x02);
 583            gui_keysym = 1;
 584            if (gui_fullscreen) {
 585                break;
 586            }
 587            if (!qemu_console_is_graphic(NULL)) {
 588                /* release grab if going to a text console */
 589                if (gui_grab) {
 590                    sdl_grab_end();
 591                } else if (absolute_enabled) {
 592                    sdl_show_cursor();
 593                }
 594            } else if (absolute_enabled) {
 595                sdl_hide_cursor();
 596                absolute_mouse_grab();
 597            }
 598            break;
 599        case 0x1b: /* '+' */
 600        case 0x35: /* '-' */
 601            if (!gui_fullscreen) {
 602                int width = MAX(real_screen->w + (keycode == 0x1b ? 50 : -50),
 603                                160);
 604                int height = (surface_height(surface) * width) /
 605                    surface_width(surface);
 606
 607                sdl_scale(width, height);
 608                graphic_hw_invalidate(NULL);
 609                graphic_hw_update(NULL);
 610                gui_keysym = 1;
 611            }
 612        default:
 613            break;
 614        }
 615    } else if (!qemu_console_is_graphic(NULL)) {
 616        int keysym = 0;
 617
 618        if (ev->key.keysym.mod & (KMOD_LCTRL | KMOD_RCTRL)) {
 619            switch (ev->key.keysym.sym) {
 620            case SDLK_UP:
 621                keysym = QEMU_KEY_CTRL_UP;
 622                break;
 623            case SDLK_DOWN:
 624                keysym = QEMU_KEY_CTRL_DOWN;
 625                break;
 626            case SDLK_LEFT:
 627                keysym = QEMU_KEY_CTRL_LEFT;
 628                break;
 629            case SDLK_RIGHT:
 630                keysym = QEMU_KEY_CTRL_RIGHT;
 631                break;
 632            case SDLK_HOME:
 633                keysym = QEMU_KEY_CTRL_HOME;
 634                break;
 635            case SDLK_END:
 636                keysym = QEMU_KEY_CTRL_END;
 637                break;
 638            case SDLK_PAGEUP:
 639                keysym = QEMU_KEY_CTRL_PAGEUP;
 640                break;
 641            case SDLK_PAGEDOWN:
 642                keysym = QEMU_KEY_CTRL_PAGEDOWN;
 643                break;
 644            default:
 645                break;
 646            }
 647        } else {
 648            switch (ev->key.keysym.sym) {
 649            case SDLK_UP:
 650                keysym = QEMU_KEY_UP;
 651                break;
 652            case SDLK_DOWN:
 653                keysym = QEMU_KEY_DOWN;
 654                break;
 655            case SDLK_LEFT:
 656                keysym = QEMU_KEY_LEFT;
 657                break;
 658            case SDLK_RIGHT:
 659                keysym = QEMU_KEY_RIGHT;
 660                break;
 661            case SDLK_HOME:
 662                keysym = QEMU_KEY_HOME;
 663                break;
 664            case SDLK_END:
 665                keysym = QEMU_KEY_END;
 666                break;
 667            case SDLK_PAGEUP:
 668                keysym = QEMU_KEY_PAGEUP;
 669                break;
 670            case SDLK_PAGEDOWN:
 671                keysym = QEMU_KEY_PAGEDOWN;
 672                break;
 673            case SDLK_BACKSPACE:
 674                keysym = QEMU_KEY_BACKSPACE;
 675                break;
 676            case SDLK_DELETE:
 677                keysym = QEMU_KEY_DELETE;
 678                break;
 679            default:
 680                break;
 681            }
 682        }
 683        if (keysym) {
 684            kbd_put_keysym(keysym);
 685        } else if (ev->key.keysym.unicode != 0) {
 686            kbd_put_keysym(ev->key.keysym.unicode);
 687        }
 688    }
 689    if (qemu_console_is_graphic(NULL) && !gui_keysym) {
 690        sdl_process_key(&ev->key);
 691    }
 692}
 693
 694static void handle_keyup(SDL_Event *ev)
 695{
 696    int mod_state;
 697
 698    if (!alt_grab) {
 699        mod_state = (ev->key.keysym.mod & gui_grab_code);
 700    } else {
 701        mod_state = (ev->key.keysym.mod & (gui_grab_code | KMOD_LSHIFT));
 702    }
 703    if (!mod_state && gui_key_modifier_pressed) {
 704        gui_key_modifier_pressed = 0;
 705        if (gui_keysym == 0) {
 706            /* exit/enter grab if pressing Ctrl-Alt */
 707            if (!gui_grab) {
 708                if (qemu_console_is_graphic(NULL)) {
 709                    sdl_grab_start();
 710                }
 711            } else if (!gui_fullscreen) {
 712                sdl_grab_end();
 713            }
 714            /* SDL does not send back all the modifiers key, so we must
 715             * correct it. */
 716            reset_keys();
 717            return;
 718        }
 719        gui_keysym = 0;
 720    }
 721    if (qemu_console_is_graphic(NULL) && !gui_keysym) {
 722        sdl_process_key(&ev->key);
 723    }
 724}
 725
 726static void handle_mousemotion(SDL_Event *ev)
 727{
 728    int max_x, max_y;
 729
 730    if (qemu_console_is_graphic(NULL) &&
 731        (qemu_input_is_absolute() || absolute_enabled)) {
 732        max_x = real_screen->w - 1;
 733        max_y = real_screen->h - 1;
 734        if (gui_grab && (ev->motion.x == 0 || ev->motion.y == 0 ||
 735            ev->motion.x == max_x || ev->motion.y == max_y)) {
 736            sdl_grab_end();
 737        }
 738        if (!gui_grab &&
 739            (ev->motion.x > 0 && ev->motion.x < max_x &&
 740            ev->motion.y > 0 && ev->motion.y < max_y)) {
 741            sdl_grab_start();
 742        }
 743    }
 744    if (gui_grab || qemu_input_is_absolute() || absolute_enabled) {
 745        sdl_send_mouse_event(ev->motion.xrel, ev->motion.yrel,
 746                             ev->motion.x, ev->motion.y, ev->motion.state);
 747    }
 748}
 749
 750static void handle_mousebutton(SDL_Event *ev)
 751{
 752    int buttonstate = SDL_GetMouseState(NULL, NULL);
 753    SDL_MouseButtonEvent *bev;
 754
 755    if (!qemu_console_is_graphic(NULL)) {
 756        return;
 757    }
 758
 759    bev = &ev->button;
 760    if (!gui_grab && !qemu_input_is_absolute()) {
 761        if (ev->type == SDL_MOUSEBUTTONUP && bev->button == SDL_BUTTON_LEFT) {
 762            /* start grabbing all events */
 763            sdl_grab_start();
 764        }
 765    } else {
 766        if (ev->type == SDL_MOUSEBUTTONDOWN) {
 767            buttonstate |= SDL_BUTTON(bev->button);
 768        } else {
 769            buttonstate &= ~SDL_BUTTON(bev->button);
 770        }
 771        sdl_send_mouse_event(0, 0, bev->x, bev->y, buttonstate);
 772    }
 773}
 774
 775static void handle_activation(SDL_Event *ev)
 776{
 777#ifdef _WIN32
 778    /* Disable grab if the window no longer has the focus
 779     * (Windows-only workaround) */
 780    if (gui_grab && ev->active.state == SDL_APPINPUTFOCUS &&
 781        !ev->active.gain && !gui_fullscreen) {
 782        sdl_grab_end();
 783    }
 784#endif
 785    if (!gui_grab && ev->active.gain && qemu_console_is_graphic(NULL) &&
 786        (qemu_input_is_absolute() || absolute_enabled)) {
 787        absolute_mouse_grab();
 788    }
 789    if (ev->active.state & SDL_APPACTIVE) {
 790        if (ev->active.gain) {
 791            /* Back to default interval */
 792            update_displaychangelistener(dcl, GUI_REFRESH_INTERVAL_DEFAULT);
 793        } else {
 794            /* Sleeping interval.  Not using the long default here as
 795             * sdl_refresh does not only update the guest screen, but
 796             * also checks for gui events. */
 797            update_displaychangelistener(dcl, 500);
 798        }
 799    }
 800}
 801
 802static void sdl_refresh(DisplayChangeListener *dcl)
 803{
 804    SDL_Event ev1, *ev = &ev1;
 805
 806    if (last_vm_running != runstate_is_running()) {
 807        last_vm_running = runstate_is_running();
 808        sdl_update_caption();
 809    }
 810
 811    graphic_hw_update(NULL);
 812    SDL_EnableUNICODE(!qemu_console_is_graphic(NULL));
 813
 814    while (SDL_PollEvent(ev)) {
 815        switch (ev->type) {
 816        case SDL_VIDEOEXPOSE:
 817            sdl_update(dcl, 0, 0, real_screen->w, real_screen->h);
 818            break;
 819        case SDL_KEYDOWN:
 820            handle_keydown(ev);
 821            break;
 822        case SDL_KEYUP:
 823            handle_keyup(ev);
 824            break;
 825        case SDL_QUIT:
 826            if (!no_quit) {
 827                no_shutdown = 0;
 828                qemu_system_shutdown_request();
 829            }
 830            break;
 831        case SDL_MOUSEMOTION:
 832            handle_mousemotion(ev);
 833            break;
 834        case SDL_MOUSEBUTTONDOWN:
 835        case SDL_MOUSEBUTTONUP:
 836            handle_mousebutton(ev);
 837            break;
 838        case SDL_ACTIVEEVENT:
 839            handle_activation(ev);
 840            break;
 841        case SDL_VIDEORESIZE:
 842            sdl_scale(ev->resize.w, ev->resize.h);
 843            graphic_hw_invalidate(NULL);
 844            graphic_hw_update(NULL);
 845            break;
 846        default:
 847            break;
 848        }
 849    }
 850}
 851
 852static void sdl_mouse_warp(DisplayChangeListener *dcl,
 853                           int x, int y, int on)
 854{
 855    if (on) {
 856        if (!guest_cursor)
 857            sdl_show_cursor();
 858        if (gui_grab || qemu_input_is_absolute() || absolute_enabled) {
 859            SDL_SetCursor(guest_sprite);
 860            if (!qemu_input_is_absolute() && !absolute_enabled) {
 861                SDL_WarpMouse(x, y);
 862            }
 863        }
 864    } else if (gui_grab)
 865        sdl_hide_cursor();
 866    guest_cursor = on;
 867    guest_x = x, guest_y = y;
 868}
 869
 870static void sdl_mouse_define(DisplayChangeListener *dcl,
 871                             QEMUCursor *c)
 872{
 873    uint8_t *image, *mask;
 874    int bpl;
 875
 876    if (guest_sprite)
 877        SDL_FreeCursor(guest_sprite);
 878
 879    bpl = cursor_get_mono_bpl(c);
 880    image = g_malloc0(bpl * c->height);
 881    mask  = g_malloc0(bpl * c->height);
 882    cursor_get_mono_image(c, 0x000000, image);
 883    cursor_get_mono_mask(c, 0, mask);
 884    guest_sprite = SDL_CreateCursor(image, mask, c->width, c->height,
 885                                    c->hot_x, c->hot_y);
 886    g_free(image);
 887    g_free(mask);
 888
 889    if (guest_cursor &&
 890            (gui_grab || qemu_input_is_absolute() || absolute_enabled))
 891        SDL_SetCursor(guest_sprite);
 892}
 893
 894static void sdl_cleanup(void)
 895{
 896    if (guest_sprite)
 897        SDL_FreeCursor(guest_sprite);
 898    SDL_QuitSubSystem(SDL_INIT_VIDEO);
 899}
 900
 901static const DisplayChangeListenerOps dcl_ops = {
 902    .dpy_name             = "sdl",
 903    .dpy_gfx_update       = sdl_update,
 904    .dpy_gfx_switch       = sdl_switch,
 905    .dpy_gfx_check_format = sdl_check_format,
 906    .dpy_refresh          = sdl_refresh,
 907    .dpy_mouse_set        = sdl_mouse_warp,
 908    .dpy_cursor_define    = sdl_mouse_define,
 909};
 910
 911void sdl_display_early_init(int opengl)
 912{
 913    if (opengl == 1 /* on */) {
 914        fprintf(stderr,
 915                "SDL1 display code has no opengl support.\n"
 916                "Please recompile qemu with SDL2, using\n"
 917                "./configure --enable-sdl --with-sdlabi=2.0\n");
 918    }
 919}
 920
 921void sdl_display_init(DisplayState *ds, int full_screen, int no_frame)
 922{
 923    int flags;
 924    uint8_t data = 0;
 925    const SDL_VideoInfo *vi;
 926    char *filename;
 927
 928#if defined(__APPLE__)
 929    /* always use generic keymaps */
 930    if (!keyboard_layout)
 931        keyboard_layout = "en-us";
 932#endif
 933    if(keyboard_layout) {
 934        kbd_layout = init_keyboard_layout(name2keysym, keyboard_layout);
 935        if (!kbd_layout)
 936            exit(1);
 937    }
 938
 939    if (no_frame)
 940        gui_noframe = 1;
 941
 942    if (!full_screen) {
 943        setenv("SDL_VIDEO_ALLOW_SCREENSAVER", "1", 0);
 944    }
 945#ifdef __linux__
 946    /* on Linux, SDL may use fbcon|directfb|svgalib when run without
 947     * accessible $DISPLAY to open X11 window.  This is often the case
 948     * when qemu is run using sudo.  But in this case, and when actually
 949     * run in X11 environment, SDL fights with X11 for the video card,
 950     * making current display unavailable, often until reboot.
 951     * So make x11 the default SDL video driver if this variable is unset.
 952     * This is a bit hackish but saves us from bigger problem.
 953     * Maybe it's a good idea to fix this in SDL instead.
 954     */
 955    setenv("SDL_VIDEODRIVER", "x11", 0);
 956#endif
 957
 958    /* Enable normal up/down events for Caps-Lock and Num-Lock keys.
 959     * This requires SDL >= 1.2.14. */
 960    setenv("SDL_DISABLE_LOCK_KEYS", "1", 1);
 961
 962    flags = SDL_INIT_VIDEO | SDL_INIT_NOPARACHUTE;
 963    if (SDL_Init (flags)) {
 964        fprintf(stderr, "Could not initialize SDL(%s) - exiting\n",
 965                SDL_GetError());
 966        exit(1);
 967    }
 968    vi = SDL_GetVideoInfo();
 969    host_format = *(vi->vfmt);
 970
 971    /* Load a 32x32x4 image. White pixels are transparent. */
 972    filename = qemu_find_file(QEMU_FILE_TYPE_BIOS, "qemu-icon.bmp");
 973    if (filename) {
 974        SDL_Surface *image = SDL_LoadBMP(filename);
 975        if (image) {
 976            uint32_t colorkey = SDL_MapRGB(image->format, 255, 255, 255);
 977            SDL_SetColorKey(image, SDL_SRCCOLORKEY, colorkey);
 978            SDL_WM_SetIcon(image, NULL);
 979        }
 980        g_free(filename);
 981    }
 982
 983    if (full_screen) {
 984        gui_fullscreen = 1;
 985        sdl_grab_start();
 986    }
 987
 988    dcl = g_new0(DisplayChangeListener, 1);
 989    dcl->ops = &dcl_ops;
 990    register_displaychangelistener(dcl);
 991
 992    mouse_mode_notifier.notify = sdl_mouse_mode_change;
 993    qemu_add_mouse_mode_change_notifier(&mouse_mode_notifier);
 994
 995    sdl_update_caption();
 996    SDL_EnableKeyRepeat(250, 50);
 997    gui_grab = 0;
 998
 999    sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
1000    sdl_cursor_normal = SDL_GetCursor();
1001
1002    atexit(sdl_cleanup);
1003}
1004