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/runstate-action.h"
  34 #include "sysemu/sysemu.h"
  35 #include "ui/win32-kbd-hook.h"
  36
  37 static int sdl2_num_outputs;
  38 static struct sdl2_console *sdl2_console;
  39
  40 static SDL_Surface *guest_sprite_surface;
  41 static int gui_grab; /* if true, all keyboard/mouse events are grabbed */
  42
  43 static int gui_saved_grab;
  44 static int gui_fullscreen;
  45 static int gui_grab_code = KMOD_LALT | KMOD_LCTRL;
  46 static SDL_Cursor *sdl_cursor_normal;
  47 static SDL_Cursor *sdl_cursor_hidden;
  48 static int absolute_enabled;
  49 static int guest_cursor;
  50 static int guest_x, guest_y;
  51 static SDL_Cursor *guest_sprite;
  52 static Notifier mouse_mode_notifier;
  53
  54 #define SDL2_REFRESH_INTERVAL_BUSY 10
  55 #define SDL2_MAX_IDLE_COUNT (2 * GUI_REFRESH_INTERVAL_DEFAULT \
  56                              / SDL2_REFRESH_INTERVAL_BUSY + 1)
  57
  58 static void sdl_update_caption(struct sdl2_console *scon);
  59
  60 static struct sdl2_console *get_scon_from_window(uint32_t window_id)
  61 {
  62     int i;
  63     for (i = 0; i < sdl2_num_outputs; i++) {
  64         if (sdl2_console[i].real_window == SDL_GetWindowFromID(window_id)) {
  65             return &sdl2_console[i];
  66         }
  67     }
  68     return NULL;
  69 }
  70
  71 void sdl2_window_create(struct sdl2_console *scon)
  72 {
  73     int flags = 0;
  74
  75     if (!scon->surface) {
  76         return;
  77     }
  78     assert(!scon->real_window);
  79
  80     if (gui_fullscreen) {
  81         flags |= SDL_WINDOW_FULLSCREEN_DESKTOP;
  82     } else {
  83         flags |= SDL_WINDOW_RESIZABLE;
  84     }
  85     if (scon->hidden) {
  86         flags |= SDL_WINDOW_HIDDEN;
  87     }
  88 #ifdef CONFIG_OPENGL
  89     if (scon->opengl) {
  90         flags |= SDL_WINDOW_OPENGL;
  91     }
  92 #endif
  93
  94     scon->real_window = SDL_CreateWindow("", SDL_WINDOWPOS_UNDEFINED,
  95                                          SDL_WINDOWPOS_UNDEFINED,
  96                                          surface_width(scon->surface),
  97                                          surface_height(scon->surface),
  98                                          flags);
  99     scon->real_renderer = SDL_CreateRenderer(scon->real_window, -1, 0);
 100     if (scon->opengl) {
 101         scon->winctx = SDL_GL_GetCurrentContext();
 102     }
 103     sdl_update_caption(scon);
 104 }
 105
 106 void sdl2_window_destroy(struct sdl2_console *scon)
 107 {
 108     if (!scon->real_window) {
 109         return;
 110     }
 111
 112     SDL_DestroyRenderer(scon->real_renderer);
 113     scon->real_renderer = NULL;
 114     SDL_DestroyWindow(scon->real_window);
 115     scon->real_window = NULL;
 116 }
 117
 118 void sdl2_window_resize(struct sdl2_console *scon)
 119 {
 120     if (!scon->real_window) {
 121         return;
 122     }
 123
 124     SDL_SetWindowSize(scon->real_window,
 125                       surface_width(scon->surface),
 126                       surface_height(scon->surface));
 127 }
 128
 129 static void sdl2_redraw(struct sdl2_console *scon)
 130 {
 131     if (scon->opengl) {
 132 #ifdef CONFIG_OPENGL
 133         sdl2_gl_redraw(scon);
 134 #endif
 135     } else {
 136         sdl2_2d_redraw(scon);
 137     }
 138 }
 139
 140 static void sdl_update_caption(struct sdl2_console *scon)
 141 {
 142     char win_title[1024];
 143     char icon_title[1024];
 144     const char *status = "";
 145
 146     if (!runstate_is_running()) {
 147         status = " [Stopped]";
 148     } else if (gui_grab) {
 149         if (alt_grab) {
 150             status = " - Press Ctrl-Alt-Shift-G to exit grab";
 151         } else if (ctrl_grab) {
 152             status = " - Press Right-Ctrl-G to exit grab";
 153         } else {
 154             status = " - Press Ctrl-Alt-G to exit grab";
 155         }
 156     }
 157
 158     if (qemu_name) {
 159         snprintf(win_title, sizeof(win_title), "QEMU (%s-%d)%s", qemu_name,
 160                  scon->idx, status);
 161         snprintf(icon_title, sizeof(icon_title), "QEMU (%s)", qemu_name);
 162     } else {
 163         snprintf(win_title, sizeof(win_title), "QEMU%s", status);
 164         snprintf(icon_title, sizeof(icon_title), "QEMU");
 165     }
 166
 167     if (scon->real_window) {
 168         SDL_SetWindowTitle(scon->real_window, win_title);
 169     }
 170 }
 171
 172 static void sdl_hide_cursor(struct sdl2_console *scon)
 173 {
 174     if (scon->opts->has_show_cursor && scon->opts->show_cursor) {
 175         return;
 176     }
 177
 178     SDL_ShowCursor(SDL_DISABLE);
 179     SDL_SetCursor(sdl_cursor_hidden);
 180
 181     if (!qemu_input_is_absolute()) {
 182         SDL_SetRelativeMouseMode(SDL_TRUE);
 183     }
 184 }
 185
 186 static void sdl_show_cursor(struct sdl2_console *scon)
 187 {
 188     if (scon->opts->has_show_cursor && scon->opts->show_cursor) {
 189         return;
 190     }
 191
 192     if (!qemu_input_is_absolute()) {
 193         SDL_SetRelativeMouseMode(SDL_FALSE);
 194     }
 195
 196     if (guest_cursor &&
 197         (gui_grab || qemu_input_is_absolute() || absolute_enabled)) {
 198         SDL_SetCursor(guest_sprite);
 199     } else {
 200         SDL_SetCursor(sdl_cursor_normal);
 201     }
 202
 203     SDL_ShowCursor(SDL_ENABLE);
 204 }
 205
 206 static void sdl_grab_start(struct sdl2_console *scon)
 207 {
 208     QemuConsole *con = scon ? scon->dcl.con : NULL;
 209
 210     if (!con || !qemu_console_is_graphic(con)) {
 211         return;
 212     }
 213     /*
 214      * If the application is not active, do not try to enter grab state. This
 215      * prevents 'SDL_WM_GrabInput(SDL_GRAB_ON)' from blocking all the
 216      * application (SDL bug).
 217      */
 218     if (!(SDL_GetWindowFlags(scon->real_window) & SDL_WINDOW_INPUT_FOCUS)) {
 219         return;
 220     }
 221     if (guest_cursor) {
 222         SDL_SetCursor(guest_sprite);
 223         if (!qemu_input_is_absolute() && !absolute_enabled) {
 224             SDL_WarpMouseInWindow(scon->real_window, guest_x, guest_y);
 225         }
 226     } else {
 227         sdl_hide_cursor(scon);
 228     }
 229     SDL_SetWindowGrab(scon->real_window, SDL_TRUE);
 230     gui_grab = 1;
 231     win32_kbd_set_grab(true);
 232     sdl_update_caption(scon);
 233 }
 234
 235 static void sdl_grab_end(struct sdl2_console *scon)
 236 {
 237     SDL_SetWindowGrab(scon->real_window, SDL_FALSE);
 238     gui_grab = 0;
 239     win32_kbd_set_grab(false);
 240     sdl_show_cursor(scon);
 241     sdl_update_caption(scon);
 242 }
 243
 244 static void absolute_mouse_grab(struct sdl2_console *scon)
 245 {
 246     int mouse_x, mouse_y;
 247     int scr_w, scr_h;
 248     SDL_GetMouseState(&mouse_x, &mouse_y);
 249     SDL_GetWindowSize(scon->real_window, &scr_w, &scr_h);
 250     if (mouse_x > 0 && mouse_x < scr_w - 1 &&
 251         mouse_y > 0 && mouse_y < scr_h - 1) {
 252         sdl_grab_start(scon);
 253     }
 254 }
 255
 256 static void sdl_mouse_mode_change(Notifier *notify, void *data)
 257 {
 258     if (qemu_input_is_absolute()) {
 259         if (!absolute_enabled) {
 260             absolute_enabled = 1;
 261             SDL_SetRelativeMouseMode(SDL_FALSE);
 262             absolute_mouse_grab(&sdl2_console[0]);
 263         }
 264     } else if (absolute_enabled) {
 265         if (!gui_fullscreen) {
 266             sdl_grab_end(&sdl2_console[0]);
 267         }
 268         absolute_enabled = 0;
 269     }
 270 }
 271
 272 static void sdl_send_mouse_event(struct sdl2_console *scon, int dx, int dy,
 273                                  int x, int y, int state)
 274 {
 275     static uint32_t bmap[INPUT_BUTTON__MAX] = {
 276         [INPUT_BUTTON_LEFT]       = SDL_BUTTON(SDL_BUTTON_LEFT),
 277         [INPUT_BUTTON_MIDDLE]     = SDL_BUTTON(SDL_BUTTON_MIDDLE),
 278         [INPUT_BUTTON_RIGHT]      = SDL_BUTTON(SDL_BUTTON_RIGHT),
 279         [INPUT_BUTTON_SIDE]       = SDL_BUTTON(SDL_BUTTON_X1),
 280         [INPUT_BUTTON_EXTRA]      = SDL_BUTTON(SDL_BUTTON_X2)
 281     };
 282     static uint32_t prev_state;
 283
 284     if (prev_state != state) {
 285         qemu_input_update_buttons(scon->dcl.con, bmap, prev_state, state);
 286         prev_state = state;
 287     }
 288
 289     if (qemu_input_is_absolute()) {
 290         qemu_input_queue_abs(scon->dcl.con, INPUT_AXIS_X,
 291                              x, 0, surface_width(scon->surface));
 292         qemu_input_queue_abs(scon->dcl.con, INPUT_AXIS_Y,
 293                              y, 0, surface_height(scon->surface));
 294     } else {
 295         if (guest_cursor) {
 296             x -= guest_x;
 297             y -= guest_y;
 298             guest_x += x;
 299             guest_y += y;
 300             dx = x;
 301             dy = y;
 302         }
 303         qemu_input_queue_rel(scon->dcl.con, INPUT_AXIS_X, dx);
 304         qemu_input_queue_rel(scon->dcl.con, INPUT_AXIS_Y, dy);
 305     }
 306     qemu_input_event_sync();
 307 }
 308
 309 static void toggle_full_screen(struct sdl2_console *scon)
 310 {
 311     gui_fullscreen = !gui_fullscreen;
 312     if (gui_fullscreen) {
 313         SDL_SetWindowFullscreen(scon->real_window,
 314                                 SDL_WINDOW_FULLSCREEN_DESKTOP);
 315         gui_saved_grab = gui_grab;
 316         sdl_grab_start(scon);
 317     } else {
 318         if (!gui_saved_grab) {
 319             sdl_grab_end(scon);
 320         }
 321         SDL_SetWindowFullscreen(scon->real_window, 0);
 322     }
 323     sdl2_redraw(scon);
 324 }
 325
 326 static int get_mod_state(void)
 327 {
 328     SDL_Keymod mod = SDL_GetModState();
 329
 330     if (alt_grab) {
 331         return (mod & (gui_grab_code | KMOD_LSHIFT)) ==
 332             (gui_grab_code | KMOD_LSHIFT);
 333     } else if (ctrl_grab) {
 334         return (mod & KMOD_RCTRL) == KMOD_RCTRL;
 335     } else {
 336         return (mod & gui_grab_code) == gui_grab_code;
 337     }
 338 }
 339
 340 static void *sdl2_win32_get_hwnd(struct sdl2_console *scon)
 341 {
 342 #ifdef CONFIG_WIN32
 343     SDL_SysWMinfo info;
 344
 345     SDL_VERSION(&info.version);
 346     if (SDL_GetWindowWMInfo(scon->real_window, &info)) {
 347         return info.info.win.window;
 348     }
 349 #endif
 350     return NULL;
 351 }
 352
 353 static void handle_keydown(SDL_Event *ev)
 354 {
 355     int win;
 356     struct sdl2_console *scon = get_scon_from_window(ev->key.windowID);
 357     int gui_key_modifier_pressed = get_mod_state();
 358     int gui_keysym = 0;
 359
 360     if (!scon) {
 361         return;
 362     }
 363
 364     if (!scon->ignore_hotkeys && gui_key_modifier_pressed && !ev->key.repeat) {
 365         switch (ev->key.keysym.scancode) {
 366         case SDL_SCANCODE_2:
 367         case SDL_SCANCODE_3:
 368         case SDL_SCANCODE_4:
 369         case SDL_SCANCODE_5:
 370         case SDL_SCANCODE_6:
 371         case SDL_SCANCODE_7:
 372         case SDL_SCANCODE_8:
 373         case SDL_SCANCODE_9:
 374             if (gui_grab) {
 375                 sdl_grab_end(scon);
 376             }
 377
 378             win = ev->key.keysym.scancode - SDL_SCANCODE_1;
 379             if (win < sdl2_num_outputs) {
 380                 sdl2_console[win].hidden = !sdl2_console[win].hidden;
 381                 if (sdl2_console[win].real_window) {
 382                     if (sdl2_console[win].hidden) {
 383                         SDL_HideWindow(sdl2_console[win].real_window);
 384                     } else {
 385                         SDL_ShowWindow(sdl2_console[win].real_window);
 386                     }
 387                 }
 388                 gui_keysym = 1;
 389             }
 390             break;
 391         case SDL_SCANCODE_F:
 392             toggle_full_screen(scon);
 393             gui_keysym = 1;
 394             break;
 395         case SDL_SCANCODE_G:
 396             gui_keysym = 1;
 397             if (!gui_grab) {
 398                 sdl_grab_start(scon);
 399             } else if (!gui_fullscreen) {
 400                 sdl_grab_end(scon);
 401             }
 402             break;
 403         case SDL_SCANCODE_U:
 404             sdl2_window_resize(scon);
 405             if (!scon->opengl) {
 406                 /* re-create scon->texture */
 407                 sdl2_2d_switch(&scon->dcl, scon->surface);
 408             }
 409             gui_keysym = 1;
 410             break;
 411 #if 0
 412         case SDL_SCANCODE_KP_PLUS:
 413         case SDL_SCANCODE_KP_MINUS:
 414             if (!gui_fullscreen) {
 415                 int scr_w, scr_h;
 416                 int width, height;
 417                 SDL_GetWindowSize(scon->real_window, &scr_w, &scr_h);
 418
 419                 width = MAX(scr_w + (ev->key.keysym.scancode ==
 420                                      SDL_SCANCODE_KP_PLUS ? 50 : -50),
 421                             160);
 422                 height = (surface_height(scon->surface) * width) /
 423                     surface_width(scon->surface);
 424                 fprintf(stderr, "%s: scale to %dx%d\n",
 425                         __func__, width, height);
 426                 sdl_scale(scon, width, height);
 427                 sdl2_redraw(scon);
 428                 gui_keysym = 1;
 429             }
 430 #endif
 431         default:
 432             break;
 433         }
 434     }
 435     if (!gui_keysym) {
 436         sdl2_process_key(scon, &ev->key);
 437     }
 438 }
 439
 440 static void handle_keyup(SDL_Event *ev)
 441 {
 442     struct sdl2_console *scon = get_scon_from_window(ev->key.windowID);
 443
 444     if (!scon) {
 445         return;
 446     }
 447
 448     scon->ignore_hotkeys = false;
 449     sdl2_process_key(scon, &ev->key);
 450 }
 451
 452 static void handle_textinput(SDL_Event *ev)
 453 {
 454     struct sdl2_console *scon = get_scon_from_window(ev->text.windowID);
 455     QemuConsole *con = scon ? scon->dcl.con : NULL;
 456
 457     if (!con) {
 458         return;
 459     }
 460
 461     if (qemu_console_is_graphic(con)) {
 462         return;
 463     }
 464     kbd_put_string_console(con, ev->text.text, strlen(ev->text.text));
 465 }
 466
 467 static void handle_mousemotion(SDL_Event *ev)
 468 {
 469     int max_x, max_y;
 470     struct sdl2_console *scon = get_scon_from_window(ev->motion.windowID);
 471
 472     if (!scon || !qemu_console_is_graphic(scon->dcl.con)) {
 473         return;
 474     }
 475
 476     if (qemu_input_is_absolute() || absolute_enabled) {
 477         int scr_w, scr_h;
 478         SDL_GetWindowSize(scon->real_window, &scr_w, &scr_h);
 479         max_x = scr_w - 1;
 480         max_y = scr_h - 1;
 481         if (gui_grab && !gui_fullscreen
 482             && (ev->motion.x == 0 || ev->motion.y == 0 ||
 483                 ev->motion.x == max_x || ev->motion.y == max_y)) {
 484             sdl_grab_end(scon);
 485         }
 486         if (!gui_grab &&
 487             (ev->motion.x > 0 && ev->motion.x < max_x &&
 488              ev->motion.y > 0 && ev->motion.y < max_y)) {
 489             sdl_grab_start(scon);
 490         }
 491     }
 492     if (gui_grab || qemu_input_is_absolute() || absolute_enabled) {
 493         sdl_send_mouse_event(scon, ev->motion.xrel, ev->motion.yrel,
 494                              ev->motion.x, ev->motion.y, ev->motion.state);
 495     }
 496 }
 497
 498 static void handle_mousebutton(SDL_Event *ev)
 499 {
 500     int buttonstate = SDL_GetMouseState(NULL, NULL);
 501     SDL_MouseButtonEvent *bev;
 502     struct sdl2_console *scon = get_scon_from_window(ev->button.windowID);
 503
 504     if (!scon || !qemu_console_is_graphic(scon->dcl.con)) {
 505         return;
 506     }
 507
 508     bev = &ev->button;
 509     if (!gui_grab && !qemu_input_is_absolute()) {
 510         if (ev->type == SDL_MOUSEBUTTONUP && bev->button == SDL_BUTTON_LEFT) {
 511             /* start grabbing all events */
 512             sdl_grab_start(scon);
 513         }
 514     } else {
 515         if (ev->type == SDL_MOUSEBUTTONDOWN) {
 516             buttonstate |= SDL_BUTTON(bev->button);
 517         } else {
 518             buttonstate &= ~SDL_BUTTON(bev->button);
 519         }
 520         sdl_send_mouse_event(scon, 0, 0, bev->x, bev->y, buttonstate);
 521     }
 522 }
 523
 524 static void handle_mousewheel(SDL_Event *ev)
 525 {
 526     struct sdl2_console *scon = get_scon_from_window(ev->wheel.windowID);
 527     SDL_MouseWheelEvent *wev = &ev->wheel;
 528     InputButton btn;
 529
 530     if (!scon || !qemu_console_is_graphic(scon->dcl.con)) {
 531         return;
 532     }
 533
 534     if (wev->y > 0) {
 535         btn = INPUT_BUTTON_WHEEL_UP;
 536     } else if (wev->y < 0) {
 537         btn = INPUT_BUTTON_WHEEL_DOWN;
 538     } else {
 539         return;
 540     }
 541
 542     qemu_input_queue_btn(scon->dcl.con, btn, true);
 543     qemu_input_event_sync();
 544     qemu_input_queue_btn(scon->dcl.con, btn, false);
 545     qemu_input_event_sync();
 546 }
 547
 548 static void handle_windowevent(SDL_Event *ev)
 549 {
 550     struct sdl2_console *scon = get_scon_from_window(ev->window.windowID);
 551     bool allow_close = true;
 552
 553     if (!scon) {
 554         return;
 555     }
 556
 557     switch (ev->window.event) {
 558     case SDL_WINDOWEVENT_RESIZED:
 559         {
 560             QemuUIInfo info;
 561             memset(&info, 0, sizeof(info));
 562             info.width = ev->window.data1;
 563             info.height = ev->window.data2;
 564             dpy_set_ui_info(scon->dcl.con, &info, true);
 565         }
 566         sdl2_redraw(scon);
 567         break;
 568     case SDL_WINDOWEVENT_EXPOSED:
 569         sdl2_redraw(scon);
 570         break;
 571     case SDL_WINDOWEVENT_FOCUS_GAINED:
 572         win32_kbd_set_grab(gui_grab);
 573         if (qemu_console_is_graphic(scon->dcl.con)) {
 574             win32_kbd_set_window(sdl2_win32_get_hwnd(scon));
 575         }
 576         /* fall through */
 577     case SDL_WINDOWEVENT_ENTER:
 578         if (!gui_grab && (qemu_input_is_absolute() || absolute_enabled)) {
 579             absolute_mouse_grab(scon);
 580         }
 581         /* If a new console window opened using a hotkey receives the
 582          * focus, SDL sends another KEYDOWN event to the new window,
 583          * closing the console window immediately after.
 584          *
 585          * Work around this by ignoring further hotkey events until a
 586          * key is released.
 587          */
 588         scon->ignore_hotkeys = get_mod_state();
 589         break;
 590     case SDL_WINDOWEVENT_FOCUS_LOST:
 591         if (qemu_console_is_graphic(scon->dcl.con)) {
 592             win32_kbd_set_window(NULL);
 593         }
 594         if (gui_grab && !gui_fullscreen) {
 595             sdl_grab_end(scon);
 596         }
 597         break;
 598     case SDL_WINDOWEVENT_RESTORED:
 599         update_displaychangelistener(&scon->dcl, GUI_REFRESH_INTERVAL_DEFAULT);
 600         break;
 601     case SDL_WINDOWEVENT_MINIMIZED:
 602         update_displaychangelistener(&scon->dcl, 500);
 603         break;
 604     case SDL_WINDOWEVENT_CLOSE:
 605         if (qemu_console_is_graphic(scon->dcl.con)) {
 606             if (scon->opts->has_window_close && !scon->opts->window_close) {
 607                 allow_close = false;
 608             }
 609             if (allow_close) {
 610                 shutdown_action = SHUTDOWN_ACTION_POWEROFF;
 611                 qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_UI);
 612             }
 613         } else {
 614             SDL_HideWindow(scon->real_window);
 615             scon->hidden = true;
 616         }
 617         break;
 618     case SDL_WINDOWEVENT_SHOWN:
 619         scon->hidden = false;
 620         break;
 621     case SDL_WINDOWEVENT_HIDDEN:
 622         scon->hidden = true;
 623         break;
 624     }
 625 }
 626
 627 void sdl2_poll_events(struct sdl2_console *scon)
 628 {
 629     SDL_Event ev1, *ev = &ev1;
 630     bool allow_close = true;
 631     int idle = 1;
 632
 633     if (scon->last_vm_running != runstate_is_running()) {
 634         scon->last_vm_running = runstate_is_running();
 635         sdl_update_caption(scon);
 636     }
 637
 638     while (SDL_PollEvent(ev)) {
 639         switch (ev->type) {
 640         case SDL_KEYDOWN:
 641             idle = 0;
 642             handle_keydown(ev);
 643             break;
 644         case SDL_KEYUP:
 645             idle = 0;
 646             handle_keyup(ev);
 647             break;
 648         case SDL_TEXTINPUT:
 649             idle = 0;
 650             handle_textinput(ev);
 651             break;
 652         case SDL_QUIT:
 653             if (scon->opts->has_window_close && !scon->opts->window_close) {
 654                 allow_close = false;
 655             }
 656             if (allow_close) {
 657                 shutdown_action = SHUTDOWN_ACTION_POWEROFF;
 658                 qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_UI);
 659             }
 660             break;
 661         case SDL_MOUSEMOTION:
 662             idle = 0;
 663             handle_mousemotion(ev);
 664             break;
 665         case SDL_MOUSEBUTTONDOWN:
 666         case SDL_MOUSEBUTTONUP:
 667             idle = 0;
 668             handle_mousebutton(ev);
 669             break;
 670         case SDL_MOUSEWHEEL:
 671             idle = 0;
 672             handle_mousewheel(ev);
 673             break;
 674         case SDL_WINDOWEVENT:
 675             handle_windowevent(ev);
 676             break;
 677         default:
 678             break;
 679         }
 680     }
 681
 682     if (idle) {
 683         if (scon->idle_counter < SDL2_MAX_IDLE_COUNT) {
 684             scon->idle_counter++;
 685             if (scon->idle_counter >= SDL2_MAX_IDLE_COUNT) {
 686                 scon->dcl.update_interval = GUI_REFRESH_INTERVAL_DEFAULT;
 687             }
 688         }
 689     } else {
 690         scon->idle_counter = 0;
 691         scon->dcl.update_interval = SDL2_REFRESH_INTERVAL_BUSY;
 692     }
 693 }
 694
 695 static void sdl_mouse_warp(DisplayChangeListener *dcl,
 696                            int x, int y, int on)
 697 {
 698     struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
 699
 700     if (!qemu_console_is_graphic(scon->dcl.con)) {
 701         return;
 702     }
 703
 704     if (on) {
 705         if (!guest_cursor) {
 706             sdl_show_cursor(scon);
 707         }
 708         if (gui_grab || qemu_input_is_absolute() || absolute_enabled) {
 709             SDL_SetCursor(guest_sprite);
 710             if (!qemu_input_is_absolute() && !absolute_enabled) {
 711                 SDL_WarpMouseInWindow(scon->real_window, x, y);
 712             }
 713         }
 714     } else if (gui_grab) {
 715         sdl_hide_cursor(scon);
 716     }
 717     guest_cursor = on;
 718     guest_x = x, guest_y = y;
 719 }
 720
 721 static void sdl_mouse_define(DisplayChangeListener *dcl,
 722                              QEMUCursor *c)
 723 {
 724
 725     if (guest_sprite) {
 726         SDL_FreeCursor(guest_sprite);
 727     }
 728
 729     if (guest_sprite_surface) {
 730         SDL_FreeSurface(guest_sprite_surface);
 731     }
 732
 733     guest_sprite_surface =
 734         SDL_CreateRGBSurfaceFrom(c->data, c->width, c->height, 32, c->width * 4,
 735                                  0xff0000, 0x00ff00, 0xff, 0xff000000);
 736
 737     if (!guest_sprite_surface) {
 738         fprintf(stderr, "Failed to make rgb surface from %p\n", c);
 739         return;
 740     }
 741     guest_sprite = SDL_CreateColorCursor(guest_sprite_surface,
 742                                          c->hot_x, c->hot_y);
 743     if (!guest_sprite) {
 744         fprintf(stderr, "Failed to make color cursor from %p\n", c);
 745         return;
 746     }
 747     if (guest_cursor &&
 748         (gui_grab || qemu_input_is_absolute() || absolute_enabled)) {
 749         SDL_SetCursor(guest_sprite);
 750     }
 751 }
 752
 753 static void sdl_cleanup(void)
 754 {
 755     if (guest_sprite) {
 756         SDL_FreeCursor(guest_sprite);
 757     }
 758     SDL_QuitSubSystem(SDL_INIT_VIDEO);
 759 }
 760
 761 static const DisplayChangeListenerOps dcl_2d_ops = {
 762     .dpy_name             = "sdl2-2d",
 763     .dpy_gfx_update       = sdl2_2d_update,
 764     .dpy_gfx_switch       = sdl2_2d_switch,
 765     .dpy_gfx_check_format = sdl2_2d_check_format,
 766     .dpy_refresh          = sdl2_2d_refresh,
 767     .dpy_mouse_set        = sdl_mouse_warp,
 768     .dpy_cursor_define    = sdl_mouse_define,
 769 };
 770
 771 #ifdef CONFIG_OPENGL
 772 static const DisplayChangeListenerOps dcl_gl_ops = {
 773     .dpy_name                = "sdl2-gl",
 774     .dpy_gfx_update          = sdl2_gl_update,
 775     .dpy_gfx_switch          = sdl2_gl_switch,
 776     .dpy_gfx_check_format    = console_gl_check_format,
 777     .dpy_refresh             = sdl2_gl_refresh,
 778     .dpy_mouse_set           = sdl_mouse_warp,
 779     .dpy_cursor_define       = sdl_mouse_define,
 780
 781     .dpy_gl_scanout_disable  = sdl2_gl_scanout_disable,
 782     .dpy_gl_scanout_texture  = sdl2_gl_scanout_texture,
 783     .dpy_gl_update           = sdl2_gl_scanout_flush,
 784 };
 785
 786 static const DisplayGLCtxOps gl_ctx_ops = {
 787     .compatible_dcl          = &dcl_gl_ops,
 788     .dpy_gl_ctx_create       = sdl2_gl_create_context,
 789     .dpy_gl_ctx_destroy      = sdl2_gl_destroy_context,
 790     .dpy_gl_ctx_make_current = sdl2_gl_make_context_current,
 791 };
 792 #endif
 793
 794 static void sdl2_display_early_init(DisplayOptions *o)
 795 {
 796     assert(o->type == DISPLAY_TYPE_SDL);
 797     if (o->has_gl && o->gl) {
 798 #ifdef CONFIG_OPENGL
 799         display_opengl = 1;
 800 #endif
 801     }
 802 }
 803
 804 static void sdl2_display_init(DisplayState *ds, DisplayOptions *o)
 805 {
 806     uint8_t data = 0;
 807     int i;
 808     SDL_SysWMinfo info;
 809     SDL_Surface *icon = NULL;
 810     char *dir;
 811
 812     assert(o->type == DISPLAY_TYPE_SDL);
 813
 814 #ifdef __linux__
 815     /* on Linux, SDL may use fbcon|directfb|svgalib when run without
 816      * accessible $DISPLAY to open X11 window.  This is often the case
 817      * when qemu is run using sudo.  But in this case, and when actually
 818      * run in X11 environment, SDL fights with X11 for the video card,
 819      * making current display unavailable, often until reboot.
 820      * So make x11 the default SDL video driver if this variable is unset.
 821      * This is a bit hackish but saves us from bigger problem.
 822      * Maybe it's a good idea to fix this in SDL instead.
 823      */
 824     if (!g_setenv("SDL_VIDEODRIVER", "x11", 0)) {
 825         fprintf(stderr, "Could not set SDL_VIDEODRIVER environment variable\n");
 826         exit(1);
 827     }
 828 #endif
 829
 830     if (SDL_Init(SDL_INIT_VIDEO)) {
 831         fprintf(stderr, "Could not initialize SDL(%s) - exiting\n",
 832                 SDL_GetError());
 833         exit(1);
 834     }
 835 #ifdef SDL_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR /* only available since SDL 2.0.8 */
 836     SDL_SetHint(SDL_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR, "0");
 837 #endif
 838     SDL_SetHint(SDL_HINT_GRAB_KEYBOARD, "1");
 839     memset(&info, 0, sizeof(info));
 840     SDL_VERSION(&info.version);
 841
 842     gui_fullscreen = o->has_full_screen && o->full_screen;
 843
 844     for (i = 0;; i++) {
 845         QemuConsole *con = qemu_console_lookup_by_index(i);
 846         if (!con) {
 847             break;
 848         }
 849     }
 850     sdl2_num_outputs = i;
 851     if (sdl2_num_outputs == 0) {
 852         return;
 853     }
 854     sdl2_console = g_new0(struct sdl2_console, sdl2_num_outputs);
 855     for (i = 0; i < sdl2_num_outputs; i++) {
 856         QemuConsole *con = qemu_console_lookup_by_index(i);
 857         assert(con != NULL);
 858         if (!qemu_console_is_graphic(con) &&
 859             qemu_console_get_index(con) != 0) {
 860             sdl2_console[i].hidden = true;
 861         }
 862         sdl2_console[i].idx = i;
 863         sdl2_console[i].opts = o;
 864 #ifdef CONFIG_OPENGL
 865         sdl2_console[i].opengl = display_opengl;
 866         sdl2_console[i].dcl.ops = display_opengl ? &dcl_gl_ops : &dcl_2d_ops;
 867         sdl2_console[i].dgc.ops = display_opengl ? &gl_ctx_ops : NULL;
 868 #else
 869         sdl2_console[i].opengl = 0;
 870         sdl2_console[i].dcl.ops = &dcl_2d_ops;
 871 #endif
 872         sdl2_console[i].dcl.con = con;
 873         sdl2_console[i].kbd = qkbd_state_init(con);
 874         if (display_opengl) {
 875             qemu_console_set_display_gl_ctx(con, &sdl2_console[i].dgc);
 876         }
 877         register_displaychangelistener(&sdl2_console[i].dcl);
 878
 879 #if defined(SDL_VIDEO_DRIVER_WINDOWS) || defined(SDL_VIDEO_DRIVER_X11)
 880         if (SDL_GetWindowWMInfo(sdl2_console[i].real_window, &info)) {
 881 #if defined(SDL_VIDEO_DRIVER_WINDOWS)
 882             qemu_console_set_window_id(con, (uintptr_t)info.info.win.window);
 883 #elif defined(SDL_VIDEO_DRIVER_X11)
 884             qemu_console_set_window_id(con, info.info.x11.window);
 885 #endif
 886         }
 887 #endif
 888     }
 889
 890 #ifdef CONFIG_SDL_IMAGE
 891     dir = get_relocated_path(CONFIG_QEMU_ICONDIR "/hicolor/128x128/apps/qemu.png");
 892     icon = IMG_Load(dir);
 893 #else
 894     /* Load a 32x32x4 image. White pixels are transparent. */
 895     dir = get_relocated_path(CONFIG_QEMU_ICONDIR "/hicolor/32x32/apps/qemu.bmp");
 896     icon = SDL_LoadBMP(dir);
 897     if (icon) {
 898         uint32_t colorkey = SDL_MapRGB(icon->format, 255, 255, 255);
 899         SDL_SetColorKey(icon, SDL_TRUE, colorkey);
 900     }
 901 #endif
 902     g_free(dir);
 903     if (icon) {
 904         SDL_SetWindowIcon(sdl2_console[0].real_window, icon);
 905     }
 906
 907     mouse_mode_notifier.notify = sdl_mouse_mode_change;
 908     qemu_add_mouse_mode_change_notifier(&mouse_mode_notifier);
 909
 910     sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
 911     sdl_cursor_normal = SDL_GetCursor();
 912
 913     if (gui_fullscreen) {
 914         sdl_grab_start(&sdl2_console[0]);
 915     }
 916
 917     atexit(sdl_cleanup);
 918 }
 919
 920 static QemuDisplay qemu_display_sdl2 = {
 921     .type       = DISPLAY_TYPE_SDL,
 922     .early_init = sdl2_display_early_init,
 923     .init       = sdl2_display_init,
 924 };
 925
 926 static void register_sdl1(void)
 927 {
 928     qemu_display_register(&qemu_display_sdl2);
 929 }
 930
 931 type_init(register_sdl1);
 932
 933 #ifdef CONFIG_OPENGL
 934 module_dep("ui-opengl");
 935 #endif