qemu/ui/sdl2.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/* Ported SDL 1.2 code to 2.0 by Dave Airlie. */
  25
  26#include "qemu/osdep.h"
  27#include "qemu/module.h"
  28#include "qemu/cutils.h"
  29#include "ui/console.h"
  30#include "ui/input.h"
  31#include "ui/sdl2.h"
  32#include "sysemu/runstate.h"
  33#include "sysemu/runstate-action.h"
  34#include "sysemu/sysemu.h"
  35#include "ui/win32-kbd-hook.h"
  36#include "qemu/log.h"
  37
  38static int sdl2_num_outputs;
  39static struct sdl2_console *sdl2_console;
  40
  41static SDL_Surface *guest_sprite_surface;
  42static int gui_grab; /* if true, all keyboard/mouse events are grabbed */
  43static bool alt_grab;
  44static bool ctrl_grab;
  45
  46static int gui_saved_grab;
  47static int gui_fullscreen;
  48static int gui_grab_code = KMOD_LALT | KMOD_LCTRL;
  49static SDL_Cursor *sdl_cursor_normal;
  50static SDL_Cursor *sdl_cursor_hidden;
  51static int absolute_enabled;
  52static int guest_cursor;
  53static int guest_x, guest_y;
  54static SDL_Cursor *guest_sprite;
  55static Notifier mouse_mode_notifier;
  56
  57#define SDL2_REFRESH_INTERVAL_BUSY 10
  58#define SDL2_MAX_IDLE_COUNT (2 * GUI_REFRESH_INTERVAL_DEFAULT \
  59                             / SDL2_REFRESH_INTERVAL_BUSY + 1)
  60
  61/* introduced in SDL 2.0.10 */
  62#ifndef SDL_HINT_RENDER_BATCHING
  63#define SDL_HINT_RENDER_BATCHING "SDL_RENDER_BATCHING"
  64#endif
  65
  66static void sdl_update_caption(struct sdl2_console *scon);
  67
  68static struct sdl2_console *get_scon_from_window(uint32_t window_id)
  69{
  70    int i;
  71    for (i = 0; i < sdl2_num_outputs; i++) {
  72        if (sdl2_console[i].real_window == SDL_GetWindowFromID(window_id)) {
  73            return &sdl2_console[i];
  74        }
  75    }
  76    return NULL;
  77}
  78
  79void sdl2_window_create(struct sdl2_console *scon)
  80{
  81    int flags = 0;
  82
  83    if (!scon->surface) {
  84        return;
  85    }
  86    assert(!scon->real_window);
  87
  88    if (gui_fullscreen) {
  89        flags |= SDL_WINDOW_FULLSCREEN_DESKTOP;
  90    } else {
  91        flags |= SDL_WINDOW_RESIZABLE;
  92    }
  93    if (scon->hidden) {
  94        flags |= SDL_WINDOW_HIDDEN;
  95    }
  96#ifdef CONFIG_OPENGL
  97    if (scon->opengl) {
  98        flags |= SDL_WINDOW_OPENGL;
  99    }
 100#endif
 101
 102    scon->real_window = SDL_CreateWindow("", SDL_WINDOWPOS_UNDEFINED,
 103                                         SDL_WINDOWPOS_UNDEFINED,
 104                                         surface_width(scon->surface),
 105                                         surface_height(scon->surface),
 106                                         flags);
 107    if (scon->opengl) {
 108        const char *driver = "opengl";
 109
 110        if (scon->opts->gl == DISPLAYGL_MODE_ES) {
 111            driver = "opengles2";
 112        }
 113
 114        SDL_SetHint(SDL_HINT_RENDER_DRIVER, driver);
 115        SDL_SetHint(SDL_HINT_RENDER_BATCHING, "1");
 116
 117        scon->winctx = SDL_GL_CreateContext(scon->real_window);
 118    } else {
 119        /* The SDL renderer is only used by sdl2-2D, when OpenGL is disabled */
 120        scon->real_renderer = SDL_CreateRenderer(scon->real_window, -1, 0);
 121    }
 122    sdl_update_caption(scon);
 123}
 124
 125void sdl2_window_destroy(struct sdl2_console *scon)
 126{
 127    if (!scon->real_window) {
 128        return;
 129    }
 130
 131    if (scon->winctx) {
 132        SDL_GL_DeleteContext(scon->winctx);
 133        scon->winctx = NULL;
 134    }
 135    if (scon->real_renderer) {
 136        SDL_DestroyRenderer(scon->real_renderer);
 137        scon->real_renderer = NULL;
 138    }
 139    SDL_DestroyWindow(scon->real_window);
 140    scon->real_window = NULL;
 141}
 142
 143void sdl2_window_resize(struct sdl2_console *scon)
 144{
 145    if (!scon->real_window) {
 146        return;
 147    }
 148
 149    SDL_SetWindowSize(scon->real_window,
 150                      surface_width(scon->surface),
 151                      surface_height(scon->surface));
 152}
 153
 154static void sdl2_redraw(struct sdl2_console *scon)
 155{
 156    if (scon->opengl) {
 157#ifdef CONFIG_OPENGL
 158        sdl2_gl_redraw(scon);
 159#endif
 160    } else {
 161        sdl2_2d_redraw(scon);
 162    }
 163}
 164
 165static void sdl_update_caption(struct sdl2_console *scon)
 166{
 167    char win_title[1024];
 168    char icon_title[1024];
 169    const char *status = "";
 170
 171    if (!runstate_is_running()) {
 172        status = " [Stopped]";
 173    } else if (gui_grab) {
 174        if (alt_grab) {
 175            status = " - Press Ctrl-Alt-Shift-G to exit grab";
 176        } else if (ctrl_grab) {
 177            status = " - Press Right-Ctrl-G to exit grab";
 178        } else {
 179            status = " - Press Ctrl-Alt-G to exit grab";
 180        }
 181    }
 182
 183    if (qemu_name) {
 184        snprintf(win_title, sizeof(win_title), "QEMU (%s-%d)%s", qemu_name,
 185                 scon->idx, status);
 186        snprintf(icon_title, sizeof(icon_title), "QEMU (%s)", qemu_name);
 187    } else {
 188        snprintf(win_title, sizeof(win_title), "QEMU%s", status);
 189        snprintf(icon_title, sizeof(icon_title), "QEMU");
 190    }
 191
 192    if (scon->real_window) {
 193        SDL_SetWindowTitle(scon->real_window, win_title);
 194    }
 195}
 196
 197static void sdl_hide_cursor(struct sdl2_console *scon)
 198{
 199    if (scon->opts->has_show_cursor && scon->opts->show_cursor) {
 200        return;
 201    }
 202
 203    SDL_ShowCursor(SDL_DISABLE);
 204    SDL_SetCursor(sdl_cursor_hidden);
 205
 206    if (!qemu_input_is_absolute()) {
 207        SDL_SetRelativeMouseMode(SDL_TRUE);
 208    }
 209}
 210
 211static void sdl_show_cursor(struct sdl2_console *scon)
 212{
 213    if (scon->opts->has_show_cursor && scon->opts->show_cursor) {
 214        return;
 215    }
 216
 217    if (!qemu_input_is_absolute()) {
 218        SDL_SetRelativeMouseMode(SDL_FALSE);
 219    }
 220
 221    if (guest_cursor &&
 222        (gui_grab || qemu_input_is_absolute() || absolute_enabled)) {
 223        SDL_SetCursor(guest_sprite);
 224    } else {
 225        SDL_SetCursor(sdl_cursor_normal);
 226    }
 227
 228    SDL_ShowCursor(SDL_ENABLE);
 229}
 230
 231static void sdl_grab_start(struct sdl2_console *scon)
 232{
 233    QemuConsole *con = scon ? scon->dcl.con : NULL;
 234
 235    if (!con || !qemu_console_is_graphic(con)) {
 236        return;
 237    }
 238    /*
 239     * If the application is not active, do not try to enter grab state. This
 240     * prevents 'SDL_WM_GrabInput(SDL_GRAB_ON)' from blocking all the
 241     * application (SDL bug).
 242     */
 243    if (!(SDL_GetWindowFlags(scon->real_window) & SDL_WINDOW_INPUT_FOCUS)) {
 244        return;
 245    }
 246    if (guest_cursor) {
 247        SDL_SetCursor(guest_sprite);
 248        if (!qemu_input_is_absolute() && !absolute_enabled) {
 249            SDL_WarpMouseInWindow(scon->real_window, guest_x, guest_y);
 250        }
 251    } else {
 252        sdl_hide_cursor(scon);
 253    }
 254    SDL_SetWindowGrab(scon->real_window, SDL_TRUE);
 255    gui_grab = 1;
 256    win32_kbd_set_grab(true);
 257    sdl_update_caption(scon);
 258}
 259
 260static void sdl_grab_end(struct sdl2_console *scon)
 261{
 262    SDL_SetWindowGrab(scon->real_window, SDL_FALSE);
 263    gui_grab = 0;
 264    win32_kbd_set_grab(false);
 265    sdl_show_cursor(scon);
 266    sdl_update_caption(scon);
 267}
 268
 269static void absolute_mouse_grab(struct sdl2_console *scon)
 270{
 271    int mouse_x, mouse_y;
 272    int scr_w, scr_h;
 273    SDL_GetMouseState(&mouse_x, &mouse_y);
 274    SDL_GetWindowSize(scon->real_window, &scr_w, &scr_h);
 275    if (mouse_x > 0 && mouse_x < scr_w - 1 &&
 276        mouse_y > 0 && mouse_y < scr_h - 1) {
 277        sdl_grab_start(scon);
 278    }
 279}
 280
 281static void sdl_mouse_mode_change(Notifier *notify, void *data)
 282{
 283    if (qemu_input_is_absolute()) {
 284        if (!absolute_enabled) {
 285            absolute_enabled = 1;
 286            SDL_SetRelativeMouseMode(SDL_FALSE);
 287            absolute_mouse_grab(&sdl2_console[0]);
 288        }
 289    } else if (absolute_enabled) {
 290        if (!gui_fullscreen) {
 291            sdl_grab_end(&sdl2_console[0]);
 292        }
 293        absolute_enabled = 0;
 294    }
 295}
 296
 297static void sdl_send_mouse_event(struct sdl2_console *scon, int dx, int dy,
 298                                 int x, int y, int state)
 299{
 300    static uint32_t bmap[INPUT_BUTTON__MAX] = {
 301        [INPUT_BUTTON_LEFT]       = SDL_BUTTON(SDL_BUTTON_LEFT),
 302        [INPUT_BUTTON_MIDDLE]     = SDL_BUTTON(SDL_BUTTON_MIDDLE),
 303        [INPUT_BUTTON_RIGHT]      = SDL_BUTTON(SDL_BUTTON_RIGHT),
 304        [INPUT_BUTTON_SIDE]       = SDL_BUTTON(SDL_BUTTON_X1),
 305        [INPUT_BUTTON_EXTRA]      = SDL_BUTTON(SDL_BUTTON_X2)
 306    };
 307    static uint32_t prev_state;
 308
 309    if (prev_state != state) {
 310        qemu_input_update_buttons(scon->dcl.con, bmap, prev_state, state);
 311        prev_state = state;
 312    }
 313
 314    if (qemu_input_is_absolute()) {
 315        qemu_input_queue_abs(scon->dcl.con, INPUT_AXIS_X,
 316                             x, 0, surface_width(scon->surface));
 317        qemu_input_queue_abs(scon->dcl.con, INPUT_AXIS_Y,
 318                             y, 0, surface_height(scon->surface));
 319    } else {
 320        if (guest_cursor) {
 321            x -= guest_x;
 322            y -= guest_y;
 323            guest_x += x;
 324            guest_y += y;
 325            dx = x;
 326            dy = y;
 327        }
 328        qemu_input_queue_rel(scon->dcl.con, INPUT_AXIS_X, dx);
 329        qemu_input_queue_rel(scon->dcl.con, INPUT_AXIS_Y, dy);
 330    }
 331    qemu_input_event_sync();
 332}
 333
 334static void toggle_full_screen(struct sdl2_console *scon)
 335{
 336    gui_fullscreen = !gui_fullscreen;
 337    if (gui_fullscreen) {
 338        SDL_SetWindowFullscreen(scon->real_window,
 339                                SDL_WINDOW_FULLSCREEN_DESKTOP);
 340        gui_saved_grab = gui_grab;
 341        sdl_grab_start(scon);
 342    } else {
 343        if (!gui_saved_grab) {
 344            sdl_grab_end(scon);
 345        }
 346        SDL_SetWindowFullscreen(scon->real_window, 0);
 347    }
 348    sdl2_redraw(scon);
 349}
 350
 351static int get_mod_state(void)
 352{
 353    SDL_Keymod mod = SDL_GetModState();
 354
 355    if (alt_grab) {
 356        return (mod & (gui_grab_code | KMOD_LSHIFT)) ==
 357            (gui_grab_code | KMOD_LSHIFT);
 358    } else if (ctrl_grab) {
 359        return (mod & KMOD_RCTRL) == KMOD_RCTRL;
 360    } else {
 361        return (mod & gui_grab_code) == gui_grab_code;
 362    }
 363}
 364
 365static void *sdl2_win32_get_hwnd(struct sdl2_console *scon)
 366{
 367#ifdef CONFIG_WIN32
 368    SDL_SysWMinfo info;
 369
 370    SDL_VERSION(&info.version);
 371    if (SDL_GetWindowWMInfo(scon->real_window, &info)) {
 372        return info.info.win.window;
 373    }
 374#endif
 375    return NULL;
 376}
 377
 378static void handle_keydown(SDL_Event *ev)
 379{
 380    int win;
 381    struct sdl2_console *scon = get_scon_from_window(ev->key.windowID);
 382    int gui_key_modifier_pressed = get_mod_state();
 383    int gui_keysym = 0;
 384
 385    if (!scon) {
 386        return;
 387    }
 388
 389    if (!scon->ignore_hotkeys && gui_key_modifier_pressed && !ev->key.repeat) {
 390        switch (ev->key.keysym.scancode) {
 391        case SDL_SCANCODE_2:
 392        case SDL_SCANCODE_3:
 393        case SDL_SCANCODE_4:
 394        case SDL_SCANCODE_5:
 395        case SDL_SCANCODE_6:
 396        case SDL_SCANCODE_7:
 397        case SDL_SCANCODE_8:
 398        case SDL_SCANCODE_9:
 399            if (gui_grab) {
 400                sdl_grab_end(scon);
 401            }
 402
 403            win = ev->key.keysym.scancode - SDL_SCANCODE_1;
 404            if (win < sdl2_num_outputs) {
 405                sdl2_console[win].hidden = !sdl2_console[win].hidden;
 406                if (sdl2_console[win].real_window) {
 407                    if (sdl2_console[win].hidden) {
 408                        SDL_HideWindow(sdl2_console[win].real_window);
 409                    } else {
 410                        SDL_ShowWindow(sdl2_console[win].real_window);
 411                    }
 412                }
 413                gui_keysym = 1;
 414            }
 415            break;
 416        case SDL_SCANCODE_F:
 417            toggle_full_screen(scon);
 418            gui_keysym = 1;
 419            break;
 420        case SDL_SCANCODE_G:
 421            gui_keysym = 1;
 422            if (!gui_grab) {
 423                sdl_grab_start(scon);
 424            } else if (!gui_fullscreen) {
 425                sdl_grab_end(scon);
 426            }
 427            break;
 428        case SDL_SCANCODE_U:
 429            sdl2_window_resize(scon);
 430            if (!scon->opengl) {
 431                /* re-create scon->texture */
 432                sdl2_2d_switch(&scon->dcl, scon->surface);
 433            }
 434            gui_keysym = 1;
 435            break;
 436#if 0
 437        case SDL_SCANCODE_KP_PLUS:
 438        case SDL_SCANCODE_KP_MINUS:
 439            if (!gui_fullscreen) {
 440                int scr_w, scr_h;
 441                int width, height;
 442                SDL_GetWindowSize(scon->real_window, &scr_w, &scr_h);
 443
 444                width = MAX(scr_w + (ev->key.keysym.scancode ==
 445                                     SDL_SCANCODE_KP_PLUS ? 50 : -50),
 446                            160);
 447                height = (surface_height(scon->surface) * width) /
 448                    surface_width(scon->surface);
 449                fprintf(stderr, "%s: scale to %dx%d\n",
 450                        __func__, width, height);
 451                sdl_scale(scon, width, height);
 452                sdl2_redraw(scon);
 453                gui_keysym = 1;
 454            }
 455#endif
 456        default:
 457            break;
 458        }
 459    }
 460    if (!gui_keysym) {
 461        sdl2_process_key(scon, &ev->key);
 462    }
 463}
 464
 465static void handle_keyup(SDL_Event *ev)
 466{
 467    struct sdl2_console *scon = get_scon_from_window(ev->key.windowID);
 468
 469    if (!scon) {
 470        return;
 471    }
 472
 473    scon->ignore_hotkeys = false;
 474    sdl2_process_key(scon, &ev->key);
 475}
 476
 477static void handle_textinput(SDL_Event *ev)
 478{
 479    struct sdl2_console *scon = get_scon_from_window(ev->text.windowID);
 480    QemuConsole *con = scon ? scon->dcl.con : NULL;
 481
 482    if (!con) {
 483        return;
 484    }
 485
 486    if (qemu_console_is_graphic(con)) {
 487        return;
 488    }
 489    kbd_put_string_console(con, ev->text.text, strlen(ev->text.text));
 490}
 491
 492static void handle_mousemotion(SDL_Event *ev)
 493{
 494    int max_x, max_y;
 495    struct sdl2_console *scon = get_scon_from_window(ev->motion.windowID);
 496
 497    if (!scon || !qemu_console_is_graphic(scon->dcl.con)) {
 498        return;
 499    }
 500
 501    if (qemu_input_is_absolute() || absolute_enabled) {
 502        int scr_w, scr_h;
 503        SDL_GetWindowSize(scon->real_window, &scr_w, &scr_h);
 504        max_x = scr_w - 1;
 505        max_y = scr_h - 1;
 506        if (gui_grab && !gui_fullscreen
 507            && (ev->motion.x == 0 || ev->motion.y == 0 ||
 508                ev->motion.x == max_x || ev->motion.y == max_y)) {
 509            sdl_grab_end(scon);
 510        }
 511        if (!gui_grab &&
 512            (ev->motion.x > 0 && ev->motion.x < max_x &&
 513             ev->motion.y > 0 && ev->motion.y < max_y)) {
 514            sdl_grab_start(scon);
 515        }
 516    }
 517    if (gui_grab || qemu_input_is_absolute() || absolute_enabled) {
 518        sdl_send_mouse_event(scon, ev->motion.xrel, ev->motion.yrel,
 519                             ev->motion.x, ev->motion.y, ev->motion.state);
 520    }
 521}
 522
 523static void handle_mousebutton(SDL_Event *ev)
 524{
 525    int buttonstate = SDL_GetMouseState(NULL, NULL);
 526    SDL_MouseButtonEvent *bev;
 527    struct sdl2_console *scon = get_scon_from_window(ev->button.windowID);
 528
 529    if (!scon || !qemu_console_is_graphic(scon->dcl.con)) {
 530        return;
 531    }
 532
 533    bev = &ev->button;
 534    if (!gui_grab && !qemu_input_is_absolute()) {
 535        if (ev->type == SDL_MOUSEBUTTONUP && bev->button == SDL_BUTTON_LEFT) {
 536            /* start grabbing all events */
 537            sdl_grab_start(scon);
 538        }
 539    } else {
 540        if (ev->type == SDL_MOUSEBUTTONDOWN) {
 541            buttonstate |= SDL_BUTTON(bev->button);
 542        } else {
 543            buttonstate &= ~SDL_BUTTON(bev->button);
 544        }
 545        sdl_send_mouse_event(scon, 0, 0, bev->x, bev->y, buttonstate);
 546    }
 547}
 548
 549static void handle_mousewheel(SDL_Event *ev)
 550{
 551    struct sdl2_console *scon = get_scon_from_window(ev->wheel.windowID);
 552    SDL_MouseWheelEvent *wev = &ev->wheel;
 553    InputButton btn;
 554
 555    if (!scon || !qemu_console_is_graphic(scon->dcl.con)) {
 556        return;
 557    }
 558
 559    if (wev->y > 0) {
 560        btn = INPUT_BUTTON_WHEEL_UP;
 561    } else if (wev->y < 0) {
 562        btn = INPUT_BUTTON_WHEEL_DOWN;
 563    } else if (wev->x < 0) {
 564        btn = INPUT_BUTTON_WHEEL_RIGHT;
 565    } else if (wev->x > 0) {
 566        btn = INPUT_BUTTON_WHEEL_LEFT;
 567    } else {
 568        return;
 569    }
 570
 571    qemu_input_queue_btn(scon->dcl.con, btn, true);
 572    qemu_input_event_sync();
 573    qemu_input_queue_btn(scon->dcl.con, btn, false);
 574    qemu_input_event_sync();
 575}
 576
 577static void handle_windowevent(SDL_Event *ev)
 578{
 579    struct sdl2_console *scon = get_scon_from_window(ev->window.windowID);
 580    bool allow_close = true;
 581
 582    if (!scon) {
 583        return;
 584    }
 585
 586    switch (ev->window.event) {
 587    case SDL_WINDOWEVENT_RESIZED:
 588        {
 589            QemuUIInfo info;
 590            memset(&info, 0, sizeof(info));
 591            info.width = ev->window.data1;
 592            info.height = ev->window.data2;
 593            dpy_set_ui_info(scon->dcl.con, &info, true);
 594        }
 595        sdl2_redraw(scon);
 596        break;
 597    case SDL_WINDOWEVENT_EXPOSED:
 598        sdl2_redraw(scon);
 599        break;
 600    case SDL_WINDOWEVENT_FOCUS_GAINED:
 601        win32_kbd_set_grab(gui_grab);
 602        if (qemu_console_is_graphic(scon->dcl.con)) {
 603            win32_kbd_set_window(sdl2_win32_get_hwnd(scon));
 604        }
 605        /* fall through */
 606    case SDL_WINDOWEVENT_ENTER:
 607        if (!gui_grab && (qemu_input_is_absolute() || absolute_enabled)) {
 608            absolute_mouse_grab(scon);
 609        }
 610        /* If a new console window opened using a hotkey receives the
 611         * focus, SDL sends another KEYDOWN event to the new window,
 612         * closing the console window immediately after.
 613         *
 614         * Work around this by ignoring further hotkey events until a
 615         * key is released.
 616         */
 617        scon->ignore_hotkeys = get_mod_state();
 618        break;
 619    case SDL_WINDOWEVENT_FOCUS_LOST:
 620        if (qemu_console_is_graphic(scon->dcl.con)) {
 621            win32_kbd_set_window(NULL);
 622        }
 623        if (gui_grab && !gui_fullscreen) {
 624            sdl_grab_end(scon);
 625        }
 626        break;
 627    case SDL_WINDOWEVENT_RESTORED:
 628        update_displaychangelistener(&scon->dcl, GUI_REFRESH_INTERVAL_DEFAULT);
 629        break;
 630    case SDL_WINDOWEVENT_MINIMIZED:
 631        update_displaychangelistener(&scon->dcl, 500);
 632        break;
 633    case SDL_WINDOWEVENT_CLOSE:
 634        if (qemu_console_is_graphic(scon->dcl.con)) {
 635            if (scon->opts->has_window_close && !scon->opts->window_close) {
 636                allow_close = false;
 637            }
 638            if (allow_close) {
 639                shutdown_action = SHUTDOWN_ACTION_POWEROFF;
 640                qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_UI);
 641            }
 642        } else {
 643            SDL_HideWindow(scon->real_window);
 644            scon->hidden = true;
 645        }
 646        break;
 647    case SDL_WINDOWEVENT_SHOWN:
 648        scon->hidden = false;
 649        break;
 650    case SDL_WINDOWEVENT_HIDDEN:
 651        scon->hidden = true;
 652        break;
 653    }
 654}
 655
 656void sdl2_poll_events(struct sdl2_console *scon)
 657{
 658    SDL_Event ev1, *ev = &ev1;
 659    bool allow_close = true;
 660    int idle = 1;
 661
 662    if (scon->last_vm_running != runstate_is_running()) {
 663        scon->last_vm_running = runstate_is_running();
 664        sdl_update_caption(scon);
 665    }
 666
 667    while (SDL_PollEvent(ev)) {
 668        switch (ev->type) {
 669        case SDL_KEYDOWN:
 670            idle = 0;
 671            handle_keydown(ev);
 672            break;
 673        case SDL_KEYUP:
 674            idle = 0;
 675            handle_keyup(ev);
 676            break;
 677        case SDL_TEXTINPUT:
 678            idle = 0;
 679            handle_textinput(ev);
 680            break;
 681        case SDL_QUIT:
 682            if (scon->opts->has_window_close && !scon->opts->window_close) {
 683                allow_close = false;
 684            }
 685            if (allow_close) {
 686                shutdown_action = SHUTDOWN_ACTION_POWEROFF;
 687                qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_UI);
 688            }
 689            break;
 690        case SDL_MOUSEMOTION:
 691            idle = 0;
 692            handle_mousemotion(ev);
 693            break;
 694        case SDL_MOUSEBUTTONDOWN:
 695        case SDL_MOUSEBUTTONUP:
 696            idle = 0;
 697            handle_mousebutton(ev);
 698            break;
 699        case SDL_MOUSEWHEEL:
 700            idle = 0;
 701            handle_mousewheel(ev);
 702            break;
 703        case SDL_WINDOWEVENT:
 704            handle_windowevent(ev);
 705            break;
 706        default:
 707            break;
 708        }
 709    }
 710
 711    if (idle) {
 712        if (scon->idle_counter < SDL2_MAX_IDLE_COUNT) {
 713            scon->idle_counter++;
 714            if (scon->idle_counter >= SDL2_MAX_IDLE_COUNT) {
 715                scon->dcl.update_interval = GUI_REFRESH_INTERVAL_DEFAULT;
 716            }
 717        }
 718    } else {
 719        scon->idle_counter = 0;
 720        scon->dcl.update_interval = SDL2_REFRESH_INTERVAL_BUSY;
 721    }
 722}
 723
 724static void sdl_mouse_warp(DisplayChangeListener *dcl,
 725                           int x, int y, int on)
 726{
 727    struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
 728
 729    if (!qemu_console_is_graphic(scon->dcl.con)) {
 730        return;
 731    }
 732
 733    if (on) {
 734        if (!guest_cursor) {
 735            sdl_show_cursor(scon);
 736        }
 737        if (gui_grab || qemu_input_is_absolute() || absolute_enabled) {
 738            SDL_SetCursor(guest_sprite);
 739            if (!qemu_input_is_absolute() && !absolute_enabled) {
 740                SDL_WarpMouseInWindow(scon->real_window, x, y);
 741            }
 742        }
 743    } else if (gui_grab) {
 744        sdl_hide_cursor(scon);
 745    }
 746    guest_cursor = on;
 747    guest_x = x, guest_y = y;
 748}
 749
 750static void sdl_mouse_define(DisplayChangeListener *dcl,
 751                             QEMUCursor *c)
 752{
 753
 754    if (guest_sprite) {
 755        SDL_FreeCursor(guest_sprite);
 756    }
 757
 758    if (guest_sprite_surface) {
 759        SDL_FreeSurface(guest_sprite_surface);
 760    }
 761
 762    guest_sprite_surface =
 763        SDL_CreateRGBSurfaceFrom(c->data, c->width, c->height, 32, c->width * 4,
 764                                 0xff0000, 0x00ff00, 0xff, 0xff000000);
 765
 766    if (!guest_sprite_surface) {
 767        fprintf(stderr, "Failed to make rgb surface from %p\n", c);
 768        return;
 769    }
 770    guest_sprite = SDL_CreateColorCursor(guest_sprite_surface,
 771                                         c->hot_x, c->hot_y);
 772    if (!guest_sprite) {
 773        fprintf(stderr, "Failed to make color cursor from %p\n", c);
 774        return;
 775    }
 776    if (guest_cursor &&
 777        (gui_grab || qemu_input_is_absolute() || absolute_enabled)) {
 778        SDL_SetCursor(guest_sprite);
 779    }
 780}
 781
 782static void sdl_cleanup(void)
 783{
 784    if (guest_sprite) {
 785        SDL_FreeCursor(guest_sprite);
 786    }
 787    SDL_QuitSubSystem(SDL_INIT_VIDEO);
 788}
 789
 790static const DisplayChangeListenerOps dcl_2d_ops = {
 791    .dpy_name             = "sdl2-2d",
 792    .dpy_gfx_update       = sdl2_2d_update,
 793    .dpy_gfx_switch       = sdl2_2d_switch,
 794    .dpy_gfx_check_format = sdl2_2d_check_format,
 795    .dpy_refresh          = sdl2_2d_refresh,
 796    .dpy_mouse_set        = sdl_mouse_warp,
 797    .dpy_cursor_define    = sdl_mouse_define,
 798};
 799
 800#ifdef CONFIG_OPENGL
 801static const DisplayChangeListenerOps dcl_gl_ops = {
 802    .dpy_name                = "sdl2-gl",
 803    .dpy_gfx_update          = sdl2_gl_update,
 804    .dpy_gfx_switch          = sdl2_gl_switch,
 805    .dpy_gfx_check_format    = console_gl_check_format,
 806    .dpy_refresh             = sdl2_gl_refresh,
 807    .dpy_mouse_set           = sdl_mouse_warp,
 808    .dpy_cursor_define       = sdl_mouse_define,
 809
 810    .dpy_gl_scanout_disable  = sdl2_gl_scanout_disable,
 811    .dpy_gl_scanout_texture  = sdl2_gl_scanout_texture,
 812    .dpy_gl_update           = sdl2_gl_scanout_flush,
 813};
 814
 815static bool
 816sdl2_gl_is_compatible_dcl(DisplayGLCtx *dgc,
 817                          DisplayChangeListener *dcl)
 818{
 819    return dcl->ops == &dcl_gl_ops;
 820}
 821
 822static const DisplayGLCtxOps gl_ctx_ops = {
 823    .dpy_gl_ctx_is_compatible_dcl = sdl2_gl_is_compatible_dcl,
 824    .dpy_gl_ctx_create       = sdl2_gl_create_context,
 825    .dpy_gl_ctx_destroy      = sdl2_gl_destroy_context,
 826    .dpy_gl_ctx_make_current = sdl2_gl_make_context_current,
 827};
 828#endif
 829
 830static void sdl2_display_early_init(DisplayOptions *o)
 831{
 832    assert(o->type == DISPLAY_TYPE_SDL);
 833    if (o->has_gl && o->gl) {
 834#ifdef CONFIG_OPENGL
 835        display_opengl = 1;
 836#endif
 837    }
 838}
 839
 840static void sdl2_display_init(DisplayState *ds, DisplayOptions *o)
 841{
 842    uint8_t data = 0;
 843    int i;
 844    SDL_SysWMinfo info;
 845    SDL_Surface *icon = NULL;
 846    char *dir;
 847
 848    assert(o->type == DISPLAY_TYPE_SDL);
 849
 850    if (SDL_GetHintBoolean("QEMU_ENABLE_SDL_LOGGING", SDL_FALSE)) {
 851        SDL_LogSetAllPriority(SDL_LOG_PRIORITY_VERBOSE);
 852    }
 853
 854    if (SDL_Init(SDL_INIT_VIDEO)) {
 855        fprintf(stderr, "Could not initialize SDL(%s) - exiting\n",
 856                SDL_GetError());
 857        exit(1);
 858    }
 859#ifdef SDL_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR /* only available since SDL 2.0.8 */
 860    SDL_SetHint(SDL_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR, "0");
 861#endif
 862#ifndef CONFIG_WIN32
 863    /* QEMU uses its own low level keyboard hook procecure on Windows */
 864    SDL_SetHint(SDL_HINT_GRAB_KEYBOARD, "1");
 865#endif
 866#ifdef SDL_HINT_ALLOW_ALT_TAB_WHILE_GRABBED
 867    SDL_SetHint(SDL_HINT_ALLOW_ALT_TAB_WHILE_GRABBED, "0");
 868#endif
 869    SDL_SetHint(SDL_HINT_WINDOWS_NO_CLOSE_ON_ALT_F4, "1");
 870    memset(&info, 0, sizeof(info));
 871    SDL_VERSION(&info.version);
 872
 873    gui_fullscreen = o->has_full_screen && o->full_screen;
 874
 875    if (o->u.sdl.has_grab_mod) {
 876        if (o->u.sdl.grab_mod == HOT_KEY_MOD_LSHIFT_LCTRL_LALT) {
 877            alt_grab = true;
 878        } else if (o->u.sdl.grab_mod == HOT_KEY_MOD_RCTRL) {
 879            ctrl_grab = true;
 880        }
 881    }
 882
 883    for (i = 0;; i++) {
 884        QemuConsole *con = qemu_console_lookup_by_index(i);
 885        if (!con) {
 886            break;
 887        }
 888    }
 889    sdl2_num_outputs = i;
 890    if (sdl2_num_outputs == 0) {
 891        return;
 892    }
 893    sdl2_console = g_new0(struct sdl2_console, sdl2_num_outputs);
 894    for (i = 0; i < sdl2_num_outputs; i++) {
 895        QemuConsole *con = qemu_console_lookup_by_index(i);
 896        assert(con != NULL);
 897        if (!qemu_console_is_graphic(con) &&
 898            qemu_console_get_index(con) != 0) {
 899            sdl2_console[i].hidden = true;
 900        }
 901        sdl2_console[i].idx = i;
 902        sdl2_console[i].opts = o;
 903#ifdef CONFIG_OPENGL
 904        sdl2_console[i].opengl = display_opengl;
 905        sdl2_console[i].dcl.ops = display_opengl ? &dcl_gl_ops : &dcl_2d_ops;
 906        sdl2_console[i].dgc.ops = display_opengl ? &gl_ctx_ops : NULL;
 907#else
 908        sdl2_console[i].opengl = 0;
 909        sdl2_console[i].dcl.ops = &dcl_2d_ops;
 910#endif
 911        sdl2_console[i].dcl.con = con;
 912        sdl2_console[i].kbd = qkbd_state_init(con);
 913        if (display_opengl) {
 914            qemu_console_set_display_gl_ctx(con, &sdl2_console[i].dgc);
 915        }
 916        register_displaychangelistener(&sdl2_console[i].dcl);
 917
 918#if defined(SDL_VIDEO_DRIVER_WINDOWS) || defined(SDL_VIDEO_DRIVER_X11)
 919        if (SDL_GetWindowWMInfo(sdl2_console[i].real_window, &info)) {
 920#if defined(SDL_VIDEO_DRIVER_WINDOWS)
 921            qemu_console_set_window_id(con, (uintptr_t)info.info.win.window);
 922#elif defined(SDL_VIDEO_DRIVER_X11)
 923            qemu_console_set_window_id(con, info.info.x11.window);
 924#endif
 925        }
 926#endif
 927    }
 928
 929#ifdef CONFIG_SDL_IMAGE
 930    dir = get_relocated_path(CONFIG_QEMU_ICONDIR "/hicolor/128x128/apps/qemu.png");
 931    icon = IMG_Load(dir);
 932#else
 933    /* Load a 32x32x4 image. White pixels are transparent. */
 934    dir = get_relocated_path(CONFIG_QEMU_ICONDIR "/hicolor/32x32/apps/qemu.bmp");
 935    icon = SDL_LoadBMP(dir);
 936    if (icon) {
 937        uint32_t colorkey = SDL_MapRGB(icon->format, 255, 255, 255);
 938        SDL_SetColorKey(icon, SDL_TRUE, colorkey);
 939    }
 940#endif
 941    g_free(dir);
 942    if (icon) {
 943        SDL_SetWindowIcon(sdl2_console[0].real_window, icon);
 944    }
 945
 946    mouse_mode_notifier.notify = sdl_mouse_mode_change;
 947    qemu_add_mouse_mode_change_notifier(&mouse_mode_notifier);
 948
 949    sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
 950    sdl_cursor_normal = SDL_GetCursor();
 951
 952    if (gui_fullscreen) {
 953        sdl_grab_start(&sdl2_console[0]);
 954    }
 955
 956    atexit(sdl_cleanup);
 957}
 958
 959static QemuDisplay qemu_display_sdl2 = {
 960    .type       = DISPLAY_TYPE_SDL,
 961    .early_init = sdl2_display_early_init,
 962    .init       = sdl2_display_init,
 963};
 964
 965static void register_sdl1(void)
 966{
 967    qemu_display_register(&qemu_display_sdl2);
 968}
 969
 970type_init(register_sdl1);
 971
 972#ifdef CONFIG_OPENGL
 973module_dep("ui-opengl");
 974#endif
 975