ui/sdl2.c

   1 /*
   2  * QEMU SDL display driver
   3  *
   4  * Copyright (c) 2003 Fabrice Bellard
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24 /* 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/sysemu.h"
  34 #include "ui/win32-kbd-hook.h"
  35
  36 static int sdl2_num_outputs;
  37 static struct sdl2_console *sdl2_console;
  38
  39 static SDL_Surface *guest_sprite_surface;
  40 static int gui_grab; /* if true, all keyboard/mouse events are grabbed */
  41
  42 static int gui_saved_grab;
  43 static int gui_fullscreen;
  44 static int gui_grab_code = KMOD_LALT | KMOD_LCTRL;
  45 static SDL_Cursor *sdl_cursor_normal;
  46 static SDL_Cursor *sdl_cursor_hidden;
  47 static int absolute_enabled;
  48 static int guest_cursor;
  49 static int guest_x, guest_y;
  50 static SDL_Cursor *guest_sprite;
  51 static Notifier mouse_mode_notifier;
  52
  53 #define SDL2_REFRESH_INTERVAL_BUSY 10
  54 #define SDL2_MAX_IDLE_COUNT (2 * GUI_REFRESH_INTERVAL_DEFAULT \
  55                              / SDL2_REFRESH_INTERVAL_BUSY + 1)
  56
  57 static void sdl_update_caption(struct sdl2_console *scon);
  58
  59 static struct sdl2_console *get_scon_from_window(uint32_t window_id)
  60 {
  61     int i;
  62     for (i = 0; i < sdl2_num_outputs; i++) {
  63         if (sdl2_console[i].real_window == SDL_GetWindowFromID(window_id)) {
  64             return &sdl2_console[i];
  65         }
  66     }
  67     return NULL;
  68 }
  69
  70 void sdl2_window_create(struct sdl2_console *scon)
  71 {
  72     int flags = 0;
  73
  74     if (!scon->surface) {
  75         return;
  76     }
  77     assert(!scon->real_window);
  78
  79     if (gui_fullscreen) {
  80         flags |= SDL_WINDOW_FULLSCREEN_DESKTOP;
  81     } else {
  82         flags |= SDL_WINDOW_RESIZABLE;
  83     }
  84     if (scon->hidden) {
  85         flags |= SDL_WINDOW_HIDDEN;
  86     }
  87 #ifdef CONFIG_OPENGL
  88     if (scon->opengl) {
  89         flags |= SDL_WINDOW_OPENGL;
  90     }
  91 #endif
  92
  93     scon->real_window = SDL_CreateWindow("", SDL_WINDOWPOS_UNDEFINED,
  94                                          SDL_WINDOWPOS_UNDEFINED,
  95                                          surface_width(scon->surface),
  96                                          surface_height(scon->surface),
  97                                          flags);
  98     scon->real_renderer = SDL_CreateRenderer(scon->real_window, -1, 0);
  99     if (scon->opengl) {
 100         scon->winctx = SDL_GL_GetCurrentContext();
 101     }
 102     sdl_update_caption(scon);
 103 }
 104
 105 void sdl2_window_destroy(struct sdl2_console *scon)
 106 {
 107     if (!scon->real_window) {
 108         return;
 109     }
 110
 111     SDL_DestroyRenderer(scon->real_renderer);
 112     scon->real_renderer = NULL;
 113     SDL_DestroyWindow(scon->real_window);
 114     scon->real_window = NULL;
 115 }
 116
 117 void sdl2_window_resize(struct sdl2_console *scon)
 118 {
 119     if (!scon->real_window) {
 120         return;
 121     }
 122
 123     SDL_SetWindowSize(scon->real_window,
 124                       surface_width(scon->surface),
 125                       surface_height(scon->surface));
 126 }
 127
 128 static void sdl2_redraw(struct sdl2_console *scon)
 129 {
 130     if (scon->opengl) {
 131 #ifdef CONFIG_OPENGL
 132         sdl2_gl_redraw(scon);
 133 #endif
 134     } else {
 135         sdl2_2d_redraw(scon);
 136     }
 137 }
 138
 139 static void sdl_update_caption(struct sdl2_console *scon)
 140 {
 141     char win_title[1024];
 142     char icon_title[1024];
 143     const char *status = "";
 144
 145     if (!runstate_is_running()) {
 146         status = " [Stopped]";
 147     } else if (gui_grab) {
 148         if (alt_grab) {
 149             status = " - Press Ctrl-Alt-Shift-G to exit grab";
 150         } else if (ctrl_grab) {
 151             status = " - Press Right-Ctrl-G to exit grab";
 152         } else {
 153             status = " - Press Ctrl-Alt-G to exit grab";
 154         }
 155     }
 156
 157     if (qemu_name) {
 158         snprintf(win_title, sizeof(win_title), "QEMU (%s-%d)%s", qemu_name,
 159                  scon->idx, status);
 160         snprintf(icon_title, sizeof(icon_title), "QEMU (%s)", qemu_name);
 161     } else {
 162         snprintf(win_title, sizeof(win_title), "QEMU%s", status);
 163         snprintf(icon_title, sizeof(icon_title), "QEMU");
 164     }
 165
 166     if (scon->real_window) {
 167         SDL_SetWindowTitle(scon->real_window, win_title);
 168     }
 169 }
 170
 171 static void sdl_hide_cursor(struct sdl2_console *scon)
 172 {
 173     if (scon->opts->has_show_cursor && scon->opts->show_cursor) {
 174         return;
 175     }
 176
 177     SDL_ShowCursor(SDL_DISABLE);
 178     SDL_SetCursor(sdl_cursor_hidden);
 179
 180     if (!qemu_input_is_absolute()) {
 181         SDL_SetRelativeMouseMode(SDL_TRUE);
 182     }
 183 }
 184
 185 static void sdl_show_cursor(struct sdl2_console *scon)
 186 {
 187     if (scon->opts->has_show_cursor && scon->opts->show_cursor) {
 188         return;
 189     }
 190
 191     if (!qemu_input_is_absolute()) {
 192         SDL_SetRelativeMouseMode(SDL_FALSE);
 193     }
 194
 195     if (guest_cursor &&
 196         (gui_grab || qemu_input_is_absolute() || absolute_enabled)) {
 197         SDL_SetCursor(guest_sprite);
 198     } else {
 199         SDL_SetCursor(sdl_cursor_normal);
 200     }
 201
 202     SDL_ShowCursor(SDL_ENABLE);
 203 }
 204
 205 static void sdl_grab_start(struct sdl2_console *scon)
 206 {
 207     QemuConsole *con = scon ? scon->dcl.con : NULL;
 208
 209     if (!con || !qemu_console_is_graphic(con)) {
 210         return;
 211     }
 212     /*
 213      * If the application is not active, do not try to enter grab state. This
 214      * prevents 'SDL_WM_GrabInput(SDL_GRAB_ON)' from blocking all the
 215      * application (SDL bug).
 216      */
 217     if (!(SDL_GetWindowFlags(scon->real_window) & SDL_WINDOW_INPUT_FOCUS)) {
 218         return;
 219     }
 220     if (guest_cursor) {
 221         SDL_SetCursor(guest_sprite);
 222         if (!qemu_input_is_absolute() && !absolute_enabled) {
 223             SDL_WarpMouseInWindow(scon->real_window, guest_x, guest_y);
 224         }
 225     } else {
 226         sdl_hide_cursor(scon);
 227     }
 228     SDL_SetWindowGrab(scon->real_window, SDL_TRUE);
 229     gui_grab = 1;
 230     win32_kbd_set_grab(true);
 231     sdl_update_caption(scon);
 232 }
 233
 234 static void sdl_grab_end(struct sdl2_console *scon)
 235 {
 236     SDL_SetWindowGrab(scon->real_window, SDL_FALSE);
 237     gui_grab = 0;
 238     win32_kbd_set_grab(false);
 239     sdl_show_cursor(scon);
 240     sdl_update_caption(scon);
 241 }
 242
 243 static void absolute_mouse_grab(struct sdl2_console *scon)
 244 {
 245     int mouse_x, mouse_y;
 246     int scr_w, scr_h;
 247     SDL_GetMouseState(&mouse_x, &mouse_y);
 248     SDL_GetWindowSize(scon->real_window, &scr_w, &scr_h);
 249     if (mouse_x > 0 && mouse_x < scr_w - 1 &&
 250         mouse_y > 0 && mouse_y < scr_h - 1) {
 251         sdl_grab_start(scon);
 252     }
 253 }
 254
 255 static void sdl_mouse_mode_change(Notifier *notify, void *data)
 256 {
 257     if (qemu_input_is_absolute()) {
 258         if (!absolute_enabled) {
 259             absolute_enabled = 1;
 260             SDL_SetRelativeMouseMode(SDL_FALSE);
 261             absolute_mouse_grab(&sdl2_console[0]);
 262         }
 263     } else if (absolute_enabled) {
 264         if (!gui_fullscreen) {
 265             sdl_grab_end(&sdl2_console[0]);
 266         }
 267         absolute_enabled = 0;
 268     }
 269 }
 270
 271 static void sdl_send_mouse_event(struct sdl2_console *scon, int dx, int dy,
 272                                  int x, int y, int state)
 273 {
 274     static uint32_t bmap[INPUT_BUTTON__MAX] = {
 275         [INPUT_BUTTON_LEFT]       = SDL_BUTTON(SDL_BUTTON_LEFT),
 276         [INPUT_BUTTON_MIDDLE]     = SDL_BUTTON(SDL_BUTTON_MIDDLE),
 277         [INPUT_BUTTON_RIGHT]      = SDL_BUTTON(SDL_BUTTON_RIGHT),
 278         [INPUT_BUTTON_SIDE]       = SDL_BUTTON(SDL_BUTTON_X1),
 279         [INPUT_BUTTON_EXTRA]      = SDL_BUTTON(SDL_BUTTON_X2)
 280     };
 281     static uint32_t prev_state;
 282
 283     if (prev_state != state) {
 284         qemu_input_update_buttons(scon->dcl.con, bmap, prev_state, state);
 285         prev_state = state;
 286     }
 287
 288     if (qemu_input_is_absolute()) {
 289         qemu_input_queue_abs(scon->dcl.con, INPUT_AXIS_X,
 290                              x, 0, surface_width(scon->surface));
 291         qemu_input_queue_abs(scon->dcl.con, INPUT_AXIS_Y,
 292                              y, 0, surface_height(scon->surface));
 293     } else {
 294         if (guest_cursor) {
 295             x -= guest_x;
 296             y -= guest_y;
 297             guest_x += x;
 298             guest_y += y;
 299             dx = x;
 300             dy = y;
 301         }
 302         qemu_input_queue_rel(scon->dcl.con, INPUT_AXIS_X, dx);
 303         qemu_input_queue_rel(scon->dcl.con, INPUT_AXIS_Y, dy);
 304     }
 305     qemu_input_event_sync();
 306 }
 307
 308 static void toggle_full_screen(struct sdl2_console *scon)
 309 {
 310     gui_fullscreen = !gui_fullscreen;
 311     if (gui_fullscreen) {
 312         SDL_SetWindowFullscreen(scon->real_window,
 313                                 SDL_WINDOW_FULLSCREEN_DESKTOP);
 314         gui_saved_grab = gui_grab;
 315         sdl_grab_start(scon);
 316     } else {
 317         if (!gui_saved_grab) {
 318             sdl_grab_end(scon);
 319         }
 320         SDL_SetWindowFullscreen(scon->real_window, 0);
 321     }
 322     sdl2_redraw(scon);
 323 }
 324
 325 static int get_mod_state(void)
 326 {
 327     SDL_Keymod mod = SDL_GetModState();
 328
 329     if (alt_grab) {
 330         return (mod & (gui_grab_code | KMOD_LSHIFT)) ==
 331             (gui_grab_code | KMOD_LSHIFT);
 332     } else if (ctrl_grab) {
 333         return (mod & KMOD_RCTRL) == KMOD_RCTRL;
 334     } else {
 335         return (mod & gui_grab_code) == gui_grab_code;
 336     }
 337 }
 338
 339 static void *sdl2_win32_get_hwnd(struct sdl2_console *scon)
 340 {
 341 #ifdef CONFIG_WIN32
 342     SDL_SysWMinfo info;
 343
 344     SDL_VERSION(&info.version);
 345     if (SDL_GetWindowWMInfo(scon->real_window, &info)) {
 346         return info.info.win.window;
 347     }
 348 #endif
 349     return NULL;
 350 }
 351
 352 static void handle_keydown(SDL_Event *ev)
 353 {
 354     int win;
 355     struct sdl2_console *scon = get_scon_from_window(ev->key.windowID);
 356     int gui_key_modifier_pressed = get_mod_state();
 357     int gui_keysym = 0;
 358
 359     if (!scon) {
 360         return;
 361     }
 362
 363     if (!scon->ignore_hotkeys && gui_key_modifier_pressed && !ev->key.repeat) {
 364         switch (ev->key.keysym.scancode) {
 365         case SDL_SCANCODE_2:
 366         case SDL_SCANCODE_3:
 367         case SDL_SCANCODE_4:
 368         case SDL_SCANCODE_5:
 369         case SDL_SCANCODE_6:
 370         case SDL_SCANCODE_7:
 371         case SDL_SCANCODE_8:
 372         case SDL_SCANCODE_9:
 373             if (gui_grab) {
 374                 sdl_grab_end(scon);
 375             }
 376
 377             win = ev->key.keysym.scancode - SDL_SCANCODE_1;
 378             if (win < sdl2_num_outputs) {
 379                 sdl2_console[win].hidden = !sdl2_console[win].hidden;
 380                 if (sdl2_console[win].real_window) {
 381                     if (sdl2_console[win].hidden) {
 382                         SDL_HideWindow(sdl2_console[win].real_window);
 383                     } else {
 384                         SDL_ShowWindow(sdl2_console[win].real_window);
 385                     }
 386                 }
 387                 gui_keysym = 1;
 388             }
 389             break;
 390         case SDL_SCANCODE_F:
 391             toggle_full_screen(scon);
 392             gui_keysym = 1;
 393             break;
 394         case SDL_SCANCODE_G:
 395             gui_keysym = 1;
 396             if (!gui_grab) {
 397                 sdl_grab_start(scon);
 398             } else if (!gui_fullscreen) {
 399                 sdl_grab_end(scon);
 400             }
 401             break;
 402         case SDL_SCANCODE_U:
 403             sdl2_window_resize(scon);
 404             if (!scon->opengl) {
 405                 /* re-create scon->texture */
 406                 sdl2_2d_switch(&scon->dcl, scon->surface);
 407             }
 408             gui_keysym = 1;
 409             break;
 410 #if 0
 411         case SDL_SCANCODE_KP_PLUS:
 412         case SDL_SCANCODE_KP_MINUS:
 413             if (!gui_fullscreen) {
 414                 int scr_w, scr_h;
 415                 int width, height;
 416                 SDL_GetWindowSize(scon->real_window, &scr_w, &scr_h);
 417
 418                 width = MAX(scr_w + (ev->key.keysym.scancode ==
 419                                      SDL_SCANCODE_KP_PLUS ? 50 : -50),
 420                             160);
 421                 height = (surface_height(scon->surface) * width) /
 422                     surface_width(scon->surface);
 423                 fprintf(stderr, "%s: scale to %dx%d\n",
 424                         __func__, width, height);
 425                 sdl_scale(scon, width, height);
 426                 sdl2_redraw(scon);
 427                 gui_keysym = 1;
 428             }
 429 #endif
 430         default:
 431             break;
 432         }
 433     }
 434     if (!gui_keysym) {
 435         sdl2_process_key(scon, &ev->key);
 436     }
 437 }
 438
 439 static void handle_keyup(SDL_Event *ev)
 440 {
 441     struct sdl2_console *scon = get_scon_from_window(ev->key.windowID);
 442
 443     if (!scon) {
 444         return;
 445     }
 446
 447     scon->ignore_hotkeys = false;
 448     sdl2_process_key(scon, &ev->key);
 449 }
 450
 451 static void handle_textinput(SDL_Event *ev)
 452 {
 453     struct sdl2_console *scon = get_scon_from_window(ev->text.windowID);
 454     QemuConsole *con = scon ? scon->dcl.con : NULL;
 455
 456     if (!con) {
 457         return;
 458     }
 459
 460     if (qemu_console_is_graphic(con)) {
 461         return;
 462     }
 463     kbd_put_string_console(con, ev->text.text, strlen(ev->text.text));
 464 }
 465
 466 static void handle_mousemotion(SDL_Event *ev)
 467 {
 468     int max_x, max_y;
 469     struct sdl2_console *scon = get_scon_from_window(ev->motion.windowID);
 470
 471     if (!scon || !qemu_console_is_graphic(scon->dcl.con)) {
 472         return;
 473     }
 474
 475     if (qemu_input_is_absolute() || absolute_enabled) {
 476         int scr_w, scr_h;
 477         SDL_GetWindowSize(scon->real_window, &scr_w, &scr_h);
 478         max_x = scr_w - 1;
 479         max_y = scr_h - 1;
 480         if (gui_grab && !gui_fullscreen
 481             && (ev->motion.x == 0 || ev->motion.y == 0 ||
 482                 ev->motion.x == max_x || ev->motion.y == max_y)) {
 483             sdl_grab_end(scon);
 484         }
 485         if (!gui_grab &&
 486             (ev->motion.x > 0 && ev->motion.x < max_x &&
 487              ev->motion.y > 0 && ev->motion.y < max_y)) {
 488             sdl_grab_start(scon);
 489         }
 490     }
 491     if (gui_grab || qemu_input_is_absolute() || absolute_enabled) {
 492         sdl_send_mouse_event(scon, ev->motion.xrel, ev->motion.yrel,
 493                              ev->motion.x, ev->motion.y, ev->motion.state);
 494     }
 495 }
 496
 497 static void handle_mousebutton(SDL_Event *ev)
 498 {
 499     int buttonstate = SDL_GetMouseState(NULL, NULL);
 500     SDL_MouseButtonEvent *bev;
 501     struct sdl2_console *scon = get_scon_from_window(ev->button.windowID);
 502
 503     if (!scon || !qemu_console_is_graphic(scon->dcl.con)) {
 504         return;
 505     }
 506
 507     bev = &ev->button;
 508     if (!gui_grab && !qemu_input_is_absolute()) {
 509         if (ev->type == SDL_MOUSEBUTTONUP && bev->button == SDL_BUTTON_LEFT) {
 510             /* start grabbing all events */
 511             sdl_grab_start(scon);
 512         }
 513     } else {
 514         if (ev->type == SDL_MOUSEBUTTONDOWN) {
 515             buttonstate |= SDL_BUTTON(bev->button);
 516         } else {
 517             buttonstate &= ~SDL_BUTTON(bev->button);
 518         }
 519         sdl_send_mouse_event(scon, 0, 0, bev->x, bev->y, buttonstate);
 520     }
 521 }
 522
 523 static void handle_mousewheel(SDL_Event *ev)
 524 {
 525     struct sdl2_console *scon = get_scon_from_window(ev->wheel.windowID);
 526     SDL_MouseWheelEvent *wev = &ev->wheel;
 527     InputButton btn;
 528
 529     if (!scon || !qemu_console_is_graphic(scon->dcl.con)) {
 530         return;
 531     }
 532
 533     if (wev->y > 0) {
 534         btn = INPUT_BUTTON_WHEEL_UP;
 535     } else if (wev->y < 0) {
 536         btn = INPUT_BUTTON_WHEEL_DOWN;
 537     } else {
 538         return;
 539     }
 540
 541     qemu_input_queue_btn(scon->dcl.con, btn, true);
 542     qemu_input_event_sync();
 543     qemu_input_queue_btn(scon->dcl.con, btn, false);
 544     qemu_input_event_sync();
 545 }
 546
 547 static void handle_windowevent(SDL_Event *ev)
 548 {
 549     struct sdl2_console *scon = get_scon_from_window(ev->window.windowID);
 550     bool allow_close = true;
 551
 552     if (!scon) {
 553         return;
 554     }
 555
 556     switch (ev->window.event) {
 557     case SDL_WINDOWEVENT_RESIZED:
 558         {
 559             QemuUIInfo info;
 560             memset(&info, 0, sizeof(info));
 561             info.width = ev->window.data1;
 562             info.height = ev->window.data2;
 563             dpy_set_ui_info(scon->dcl.con, &info);
 564         }
 565         sdl2_redraw(scon);
 566         break;
 567     case SDL_WINDOWEVENT_EXPOSED:
 568         sdl2_redraw(scon);
 569         break;
 570     case SDL_WINDOWEVENT_FOCUS_GAINED:
 571         win32_kbd_set_grab(gui_grab);
 572         if (qemu_console_is_graphic(scon->dcl.con)) {
 573             win32_kbd_set_window(sdl2_win32_get_hwnd(scon));
 574         }
 575         /* fall through */
 576     case SDL_WINDOWEVENT_ENTER:
 577         if (!gui_grab && (qemu_input_is_absolute() || absolute_enabled)) {
 578             absolute_mouse_grab(scon);
 579         }
 580         /* If a new console window opened using a hotkey receives the
 581          * focus, SDL sends another KEYDOWN event to the new window,
 582          * closing the console window immediately after.
 583          *
 584          * Work around this by ignoring further hotkey events until a
 585          * key is released.
 586          */
 587         scon->ignore_hotkeys = get_mod_state();
 588         break;
 589     case SDL_WINDOWEVENT_FOCUS_LOST:
 590         if (qemu_console_is_graphic(scon->dcl.con)) {
 591             win32_kbd_set_window(NULL);
 592         }
 593         if (gui_grab && !gui_fullscreen) {
 594             sdl_grab_end(scon);
 595         }
 596         break;
 597     case SDL_WINDOWEVENT_RESTORED:
 598         update_displaychangelistener(&scon->dcl, GUI_REFRESH_INTERVAL_DEFAULT);
 599         break;
 600     case SDL_WINDOWEVENT_MINIMIZED:
 601         update_displaychangelistener(&scon->dcl, 500);
 602         break;
 603     case SDL_WINDOWEVENT_CLOSE:
 604         if (qemu_console_is_graphic(scon->dcl.con)) {
 605             if (scon->opts->has_window_close && !scon->opts->window_close) {
 606                 allow_close = false;
 607             }
 608             if (allow_close) {
 609                 no_shutdown = 0;
 610                 qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_UI);
 611             }
 612         } else {
 613             SDL_HideWindow(scon->real_window);
 614             scon->hidden = true;
 615         }
 616         break;
 617     case SDL_WINDOWEVENT_SHOWN:
 618         scon->hidden = false;
 619         break;
 620     case SDL_WINDOWEVENT_HIDDEN:
 621         scon->hidden = true;
 622         break;
 623     }
 624 }
 625
 626 void sdl2_poll_events(struct sdl2_console *scon)
 627 {
 628     SDL_Event ev1, *ev = &ev1;
 629     bool allow_close = true;
 630     int idle = 1;
 631
 632     if (scon->last_vm_running != runstate_is_running()) {
 633         scon->last_vm_running = runstate_is_running();
 634         sdl_update_caption(scon);
 635     }
 636
 637     while (SDL_PollEvent(ev)) {
 638         switch (ev->type) {
 639         case SDL_KEYDOWN:
 640             idle = 0;
 641             handle_keydown(ev);
 642             break;
 643         case SDL_KEYUP:
 644             idle = 0;
 645             handle_keyup(ev);
 646             break;
 647         case SDL_TEXTINPUT:
 648             idle = 0;
 649             handle_textinput(ev);
 650             break;
 651         case SDL_QUIT:
 652             if (scon->opts->has_window_close && !scon->opts->window_close) {
 653                 allow_close = false;
 654             }
 655             if (allow_close) {
 656                 no_shutdown = 0;
 657                 qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_UI);
 658             }
 659             break;
 660         case SDL_MOUSEMOTION:
 661             idle = 0;
 662             handle_mousemotion(ev);
 663             break;
 664         case SDL_MOUSEBUTTONDOWN:
 665         case SDL_MOUSEBUTTONUP:
 666             idle = 0;
 667             handle_mousebutton(ev);
 668             break;
 669         case SDL_MOUSEWHEEL:
 670             idle = 0;
 671             handle_mousewheel(ev);
 672             break;
 673         case SDL_WINDOWEVENT:
 674             handle_windowevent(ev);
 675             break;
 676         default:
 677             break;
 678         }
 679     }
 680
 681     if (idle) {
 682         if (scon->idle_counter < SDL2_MAX_IDLE_COUNT) {
 683             scon->idle_counter++;
 684             if (scon->idle_counter >= SDL2_MAX_IDLE_COUNT) {
 685                 scon->dcl.update_interval = GUI_REFRESH_INTERVAL_DEFAULT;
 686             }
 687         }
 688     } else {
 689         scon->idle_counter = 0;
 690         scon->dcl.update_interval = SDL2_REFRESH_INTERVAL_BUSY;
 691     }
 692 }
 693
 694 static void sdl_mouse_warp(DisplayChangeListener *dcl,
 695                            int x, int y, int on)
 696 {
 697     struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
 698
 699     if (!qemu_console_is_graphic(scon->dcl.con)) {
 700         return;
 701     }
 702
 703     if (on) {
 704         if (!guest_cursor) {
 705             sdl_show_cursor(scon);
 706         }
 707         if (gui_grab || qemu_input_is_absolute() || absolute_enabled) {
 708             SDL_SetCursor(guest_sprite);
 709             if (!qemu_input_is_absolute() && !absolute_enabled) {
 710                 SDL_WarpMouseInWindow(scon->real_window, x, y);
 711             }
 712         }
 713     } else if (gui_grab) {
 714         sdl_hide_cursor(scon);
 715     }
 716     guest_cursor = on;
 717     guest_x = x, guest_y = y;
 718 }
 719
 720 static void sdl_mouse_define(DisplayChangeListener *dcl,
 721                              QEMUCursor *c)
 722 {
 723
 724     if (guest_sprite) {
 725         SDL_FreeCursor(guest_sprite);
 726     }
 727
 728     if (guest_sprite_surface) {
 729         SDL_FreeSurface(guest_sprite_surface);
 730     }
 731
 732     guest_sprite_surface =
 733         SDL_CreateRGBSurfaceFrom(c->data, c->width, c->height, 32, c->width * 4,
 734                                  0xff0000, 0x00ff00, 0xff, 0xff000000);
 735
 736     if (!guest_sprite_surface) {
 737         fprintf(stderr, "Failed to make rgb surface from %p\n", c);
 738         return;
 739     }
 740     guest_sprite = SDL_CreateColorCursor(guest_sprite_surface,
 741                                          c->hot_x, c->hot_y);
 742     if (!guest_sprite) {
 743         fprintf(stderr, "Failed to make color cursor from %p\n", c);
 744         return;
 745     }
 746     if (guest_cursor &&
 747         (gui_grab || qemu_input_is_absolute() || absolute_enabled)) {
 748         SDL_SetCursor(guest_sprite);
 749     }
 750 }
 751
 752 static void sdl_cleanup(void)
 753 {
 754     if (guest_sprite) {
 755         SDL_FreeCursor(guest_sprite);
 756     }
 757     SDL_QuitSubSystem(SDL_INIT_VIDEO);
 758 }
 759
 760 static const DisplayChangeListenerOps dcl_2d_ops = {
 761     .dpy_name             = "sdl2-2d",
 762     .dpy_gfx_update       = sdl2_2d_update,
 763     .dpy_gfx_switch       = sdl2_2d_switch,
 764     .dpy_gfx_check_format = sdl2_2d_check_format,
 765     .dpy_refresh          = sdl2_2d_refresh,
 766     .dpy_mouse_set        = sdl_mouse_warp,
 767     .dpy_cursor_define    = sdl_mouse_define,
 768 };
 769
 770 #ifdef CONFIG_OPENGL
 771 static const DisplayChangeListenerOps dcl_gl_ops = {
 772     .dpy_name                = "sdl2-gl",
 773     .dpy_gfx_update          = sdl2_gl_update,
 774     .dpy_gfx_switch          = sdl2_gl_switch,
 775     .dpy_gfx_check_format    = console_gl_check_format,
 776     .dpy_refresh             = sdl2_gl_refresh,
 777     .dpy_mouse_set           = sdl_mouse_warp,
 778     .dpy_cursor_define       = sdl_mouse_define,
 779
 780     .dpy_gl_ctx_create       = sdl2_gl_create_context,
 781     .dpy_gl_ctx_destroy      = sdl2_gl_destroy_context,
 782     .dpy_gl_ctx_make_current = sdl2_gl_make_context_current,
 783     .dpy_gl_ctx_get_current  = sdl2_gl_get_current_context,
 784     .dpy_gl_scanout_disable  = sdl2_gl_scanout_disable,
 785     .dpy_gl_scanout_texture  = sdl2_gl_scanout_texture,
 786     .dpy_gl_update           = sdl2_gl_scanout_flush,
 787 };
 788 #endif
 789
 790 static void sdl2_display_early_init(DisplayOptions *o)
 791 {
 792     assert(o->type == DISPLAY_TYPE_SDL);
 793     if (o->has_gl && o->gl) {
 794 #ifdef CONFIG_OPENGL
 795         display_opengl = 1;
 796 #endif
 797     }
 798 }
 799
 800 static void sdl2_display_init(DisplayState *ds, DisplayOptions *o)
 801 {
 802     uint8_t data = 0;
 803     int i;
 804     SDL_SysWMinfo info;
 805     SDL_Surface *icon = NULL;
 806     char *dir;
 807
 808     assert(o->type == DISPLAY_TYPE_SDL);
 809
 810 #ifdef __linux__
 811     /* on Linux, SDL may use fbcon|directfb|svgalib when run without
 812      * accessible $DISPLAY to open X11 window.  This is often the case
 813      * when qemu is run using sudo.  But in this case, and when actually
 814      * run in X11 environment, SDL fights with X11 for the video card,
 815      * making current display unavailable, often until reboot.
 816      * So make x11 the default SDL video driver if this variable is unset.
 817      * This is a bit hackish but saves us from bigger problem.
 818      * Maybe it's a good idea to fix this in SDL instead.
 819      */
 820     g_setenv("SDL_VIDEODRIVER", "x11", 0);
 821 #endif
 822
 823     if (SDL_Init(SDL_INIT_VIDEO)) {
 824         fprintf(stderr, "Could not initialize SDL(%s) - exiting\n",
 825                 SDL_GetError());
 826         exit(1);
 827     }
 828 #ifdef SDL_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR /* only available since SDL 2.0.8 */
 829     SDL_SetHint(SDL_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR, "0");
 830 #endif
 831     SDL_SetHint(SDL_HINT_GRAB_KEYBOARD, "1");
 832     memset(&info, 0, sizeof(info));
 833     SDL_VERSION(&info.version);
 834
 835     gui_fullscreen = o->has_full_screen && o->full_screen;
 836
 837     for (i = 0;; i++) {
 838         QemuConsole *con = qemu_console_lookup_by_index(i);
 839         if (!con) {
 840             break;
 841         }
 842     }
 843     sdl2_num_outputs = i;
 844     if (sdl2_num_outputs == 0) {
 845         return;
 846     }
 847     sdl2_console = g_new0(struct sdl2_console, sdl2_num_outputs);
 848     for (i = 0; i < sdl2_num_outputs; i++) {
 849         QemuConsole *con = qemu_console_lookup_by_index(i);
 850         assert(con != NULL);
 851         if (!qemu_console_is_graphic(con) &&
 852             qemu_console_get_index(con) != 0) {
 853             sdl2_console[i].hidden = true;
 854         }
 855         sdl2_console[i].idx = i;
 856         sdl2_console[i].opts = o;
 857 #ifdef CONFIG_OPENGL
 858         sdl2_console[i].opengl = display_opengl;
 859         sdl2_console[i].dcl.ops = display_opengl ? &dcl_gl_ops : &dcl_2d_ops;
 860 #else
 861         sdl2_console[i].opengl = 0;
 862         sdl2_console[i].dcl.ops = &dcl_2d_ops;
 863 #endif
 864         sdl2_console[i].dcl.con = con;
 865         sdl2_console[i].kbd = qkbd_state_init(con);
 866         register_displaychangelistener(&sdl2_console[i].dcl);
 867
 868 #if defined(SDL_VIDEO_DRIVER_WINDOWS) || defined(SDL_VIDEO_DRIVER_X11)
 869         if (SDL_GetWindowWMInfo(sdl2_console[i].real_window, &info)) {
 870 #if defined(SDL_VIDEO_DRIVER_WINDOWS)
 871             qemu_console_set_window_id(con, (uintptr_t)info.info.win.window);
 872 #elif defined(SDL_VIDEO_DRIVER_X11)
 873             qemu_console_set_window_id(con, info.info.x11.window);
 874 #endif
 875         }
 876 #endif
 877     }
 878
 879 #ifdef CONFIG_SDL_IMAGE
 880     dir = get_relocated_path(CONFIG_QEMU_ICONDIR "/hicolor/128x128/apps/qemu.png");
 881     icon = IMG_Load(dir);
 882 #else
 883     /* Load a 32x32x4 image. White pixels are transparent. */
 884     dir = get_relocated_path(CONFIG_QEMU_ICONDIR "/hicolor/32x32/apps/qemu.bmp");
 885     icon = SDL_LoadBMP(dir);
 886     if (icon) {
 887         uint32_t colorkey = SDL_MapRGB(icon->format, 255, 255, 255);
 888         SDL_SetColorKey(icon, SDL_TRUE, colorkey);
 889     }
 890 #endif
 891     g_free(dir);
 892     if (icon) {
 893         SDL_SetWindowIcon(sdl2_console[0].real_window, icon);
 894     }
 895
 896     mouse_mode_notifier.notify = sdl_mouse_mode_change;
 897     qemu_add_mouse_mode_change_notifier(&mouse_mode_notifier);
 898
 899     sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
 900     sdl_cursor_normal = SDL_GetCursor();
 901
 902     if (gui_fullscreen) {
 903         sdl_grab_start(&sdl2_console[0]);
 904     }
 905
 906     atexit(sdl_cleanup);
 907 }
 908
 909 static QemuDisplay qemu_display_sdl2 = {
 910     .type       = DISPLAY_TYPE_SDL,
 911     .early_init = sdl2_display_early_init,
 912     .init       = sdl2_display_init,
 913 };
 914
 915 static void register_sdl1(void)
 916 {
 917     qemu_display_register(&qemu_display_sdl2);
 918 }
 919
 920 type_init(register_sdl1);