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