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     };
 279     static uint32_t prev_state;
 280
 281     if (prev_state != state) {
 282         qemu_input_update_buttons(scon->dcl.con, bmap, prev_state, state);
 283         prev_state = state;
 284     }
 285
 286     if (qemu_input_is_absolute()) {
 287         qemu_input_queue_abs(scon->dcl.con, INPUT_AXIS_X,
 288                              x, 0, surface_width(scon->surface));
 289         qemu_input_queue_abs(scon->dcl.con, INPUT_AXIS_Y,
 290                              y, 0, surface_height(scon->surface));
 291     } else {
 292         if (guest_cursor) {
 293             x -= guest_x;
 294             y -= guest_y;
 295             guest_x += x;
 296             guest_y += y;
 297             dx = x;
 298             dy = y;
 299         }
 300         qemu_input_queue_rel(scon->dcl.con, INPUT_AXIS_X, dx);
 301         qemu_input_queue_rel(scon->dcl.con, INPUT_AXIS_Y, dy);
 302     }
 303     qemu_input_event_sync();
 304 }
 305
 306 static void toggle_full_screen(struct sdl2_console *scon)
 307 {
 308     gui_fullscreen = !gui_fullscreen;
 309     if (gui_fullscreen) {
 310         SDL_SetWindowFullscreen(scon->real_window,
 311                                 SDL_WINDOW_FULLSCREEN_DESKTOP);
 312         gui_saved_grab = gui_grab;
 313         sdl_grab_start(scon);
 314     } else {
 315         if (!gui_saved_grab) {
 316             sdl_grab_end(scon);
 317         }
 318         SDL_SetWindowFullscreen(scon->real_window, 0);
 319     }
 320     sdl2_redraw(scon);
 321 }
 322
 323 static int get_mod_state(void)
 324 {
 325     SDL_Keymod mod = SDL_GetModState();
 326
 327     if (alt_grab) {
 328         return (mod & (gui_grab_code | KMOD_LSHIFT)) ==
 329             (gui_grab_code | KMOD_LSHIFT);
 330     } else if (ctrl_grab) {
 331         return (mod & KMOD_RCTRL) == KMOD_RCTRL;
 332     } else {
 333         return (mod & gui_grab_code) == gui_grab_code;
 334     }
 335 }
 336
 337 static void *sdl2_win32_get_hwnd(struct sdl2_console *scon)
 338 {
 339 #ifdef CONFIG_WIN32
 340     SDL_SysWMinfo info;
 341
 342     SDL_VERSION(&info.version);
 343     if (SDL_GetWindowWMInfo(scon->real_window, &info)) {
 344         return info.info.win.window;
 345     }
 346 #endif
 347     return NULL;
 348 }
 349
 350 static void handle_keydown(SDL_Event *ev)
 351 {
 352     int win;
 353     struct sdl2_console *scon = get_scon_from_window(ev->key.windowID);
 354     int gui_key_modifier_pressed = get_mod_state();
 355     int gui_keysym = 0;
 356
 357     if (!scon) {
 358         return;
 359     }
 360
 361     if (!scon->ignore_hotkeys && gui_key_modifier_pressed && !ev->key.repeat) {
 362         switch (ev->key.keysym.scancode) {
 363         case SDL_SCANCODE_2:
 364         case SDL_SCANCODE_3:
 365         case SDL_SCANCODE_4:
 366         case SDL_SCANCODE_5:
 367         case SDL_SCANCODE_6:
 368         case SDL_SCANCODE_7:
 369         case SDL_SCANCODE_8:
 370         case SDL_SCANCODE_9:
 371             if (gui_grab) {
 372                 sdl_grab_end(scon);
 373             }
 374
 375             win = ev->key.keysym.scancode - SDL_SCANCODE_1;
 376             if (win < sdl2_num_outputs) {
 377                 sdl2_console[win].hidden = !sdl2_console[win].hidden;
 378                 if (sdl2_console[win].real_window) {
 379                     if (sdl2_console[win].hidden) {
 380                         SDL_HideWindow(sdl2_console[win].real_window);
 381                     } else {
 382                         SDL_ShowWindow(sdl2_console[win].real_window);
 383                     }
 384                 }
 385                 gui_keysym = 1;
 386             }
 387             break;
 388         case SDL_SCANCODE_F:
 389             toggle_full_screen(scon);
 390             gui_keysym = 1;
 391             break;
 392         case SDL_SCANCODE_G:
 393             gui_keysym = 1;
 394             if (!gui_grab) {
 395                 sdl_grab_start(scon);
 396             } else if (!gui_fullscreen) {
 397                 sdl_grab_end(scon);
 398             }
 399             break;
 400         case SDL_SCANCODE_U:
 401             sdl2_window_resize(scon);
 402             if (!scon->opengl) {
 403                 /* re-create scon->texture */
 404                 sdl2_2d_switch(&scon->dcl, scon->surface);
 405             }
 406             gui_keysym = 1;
 407             break;
 408 #if 0
 409         case SDL_SCANCODE_KP_PLUS:
 410         case SDL_SCANCODE_KP_MINUS:
 411             if (!gui_fullscreen) {
 412                 int scr_w, scr_h;
 413                 int width, height;
 414                 SDL_GetWindowSize(scon->real_window, &scr_w, &scr_h);
 415
 416                 width = MAX(scr_w + (ev->key.keysym.scancode ==
 417                                      SDL_SCANCODE_KP_PLUS ? 50 : -50),
 418                             160);
 419                 height = (surface_height(scon->surface) * width) /
 420                     surface_width(scon->surface);
 421                 fprintf(stderr, "%s: scale to %dx%d\n",
 422                         __func__, width, height);
 423                 sdl_scale(scon, width, height);
 424                 sdl2_redraw(scon);
 425                 gui_keysym = 1;
 426             }
 427 #endif
 428         default:
 429             break;
 430         }
 431     }
 432     if (!gui_keysym) {
 433         sdl2_process_key(scon, &ev->key);
 434     }
 435 }
 436
 437 static void handle_keyup(SDL_Event *ev)
 438 {
 439     struct sdl2_console *scon = get_scon_from_window(ev->key.windowID);
 440
 441     if (!scon) {
 442         return;
 443     }
 444
 445     scon->ignore_hotkeys = false;
 446     sdl2_process_key(scon, &ev->key);
 447 }
 448
 449 static void handle_textinput(SDL_Event *ev)
 450 {
 451     struct sdl2_console *scon = get_scon_from_window(ev->text.windowID);
 452     QemuConsole *con = scon ? scon->dcl.con : NULL;
 453
 454     if (!con) {
 455         return;
 456     }
 457
 458     if (qemu_console_is_graphic(con)) {
 459         return;
 460     }
 461     kbd_put_string_console(con, ev->text.text, strlen(ev->text.text));
 462 }
 463
 464 static void handle_mousemotion(SDL_Event *ev)
 465 {
 466     int max_x, max_y;
 467     struct sdl2_console *scon = get_scon_from_window(ev->motion.windowID);
 468
 469     if (!scon || !qemu_console_is_graphic(scon->dcl.con)) {
 470         return;
 471     }
 472
 473     if (qemu_input_is_absolute() || absolute_enabled) {
 474         int scr_w, scr_h;
 475         SDL_GetWindowSize(scon->real_window, &scr_w, &scr_h);
 476         max_x = scr_w - 1;
 477         max_y = scr_h - 1;
 478         if (gui_grab && !gui_fullscreen
 479             && (ev->motion.x == 0 || ev->motion.y == 0 ||
 480                 ev->motion.x == max_x || ev->motion.y == max_y)) {
 481             sdl_grab_end(scon);
 482         }
 483         if (!gui_grab &&
 484             (ev->motion.x > 0 && ev->motion.x < max_x &&
 485              ev->motion.y > 0 && ev->motion.y < max_y)) {
 486             sdl_grab_start(scon);
 487         }
 488     }
 489     if (gui_grab || qemu_input_is_absolute() || absolute_enabled) {
 490         sdl_send_mouse_event(scon, ev->motion.xrel, ev->motion.yrel,
 491                              ev->motion.x, ev->motion.y, ev->motion.state);
 492     }
 493 }
 494
 495 static void handle_mousebutton(SDL_Event *ev)
 496 {
 497     int buttonstate = SDL_GetMouseState(NULL, NULL);
 498     SDL_MouseButtonEvent *bev;
 499     struct sdl2_console *scon = get_scon_from_window(ev->button.windowID);
 500
 501     if (!scon || !qemu_console_is_graphic(scon->dcl.con)) {
 502         return;
 503     }
 504
 505     bev = &ev->button;
 506     if (!gui_grab && !qemu_input_is_absolute()) {
 507         if (ev->type == SDL_MOUSEBUTTONUP && bev->button == SDL_BUTTON_LEFT) {
 508             /* start grabbing all events */
 509             sdl_grab_start(scon);
 510         }
 511     } else {
 512         if (ev->type == SDL_MOUSEBUTTONDOWN) {
 513             buttonstate |= SDL_BUTTON(bev->button);
 514         } else {
 515             buttonstate &= ~SDL_BUTTON(bev->button);
 516         }
 517         sdl_send_mouse_event(scon, 0, 0, bev->x, bev->y, buttonstate);
 518     }
 519 }
 520
 521 static void handle_mousewheel(SDL_Event *ev)
 522 {
 523     struct sdl2_console *scon = get_scon_from_window(ev->wheel.windowID);
 524     SDL_MouseWheelEvent *wev = &ev->wheel;
 525     InputButton btn;
 526
 527     if (!scon || !qemu_console_is_graphic(scon->dcl.con)) {
 528         return;
 529     }
 530
 531     if (wev->y > 0) {
 532         btn = INPUT_BUTTON_WHEEL_UP;
 533     } else if (wev->y < 0) {
 534         btn = INPUT_BUTTON_WHEEL_DOWN;
 535     } else {
 536         return;
 537     }
 538
 539     qemu_input_queue_btn(scon->dcl.con, btn, true);
 540     qemu_input_event_sync();
 541     qemu_input_queue_btn(scon->dcl.con, btn, false);
 542     qemu_input_event_sync();
 543 }
 544
 545 static void handle_windowevent(SDL_Event *ev)
 546 {
 547     struct sdl2_console *scon = get_scon_from_window(ev->window.windowID);
 548     bool allow_close = true;
 549
 550     if (!scon) {
 551         return;
 552     }
 553
 554     switch (ev->window.event) {
 555     case SDL_WINDOWEVENT_RESIZED:
 556         {
 557             QemuUIInfo info;
 558             memset(&info, 0, sizeof(info));
 559             info.width = ev->window.data1;
 560             info.height = ev->window.data2;
 561             dpy_set_ui_info(scon->dcl.con, &info);
 562         }
 563         sdl2_redraw(scon);
 564         break;
 565     case SDL_WINDOWEVENT_EXPOSED:
 566         sdl2_redraw(scon);
 567         break;
 568     case SDL_WINDOWEVENT_FOCUS_GAINED:
 569         win32_kbd_set_grab(gui_grab);
 570         if (qemu_console_is_graphic(scon->dcl.con)) {
 571             win32_kbd_set_window(sdl2_win32_get_hwnd(scon));
 572         }
 573         /* fall through */
 574     case SDL_WINDOWEVENT_ENTER:
 575         if (!gui_grab && (qemu_input_is_absolute() || absolute_enabled)) {
 576             absolute_mouse_grab(scon);
 577         }
 578         /* If a new console window opened using a hotkey receives the
 579          * focus, SDL sends another KEYDOWN event to the new window,
 580          * closing the console window immediately after.
 581          *
 582          * Work around this by ignoring further hotkey events until a
 583          * key is released.
 584          */
 585         scon->ignore_hotkeys = get_mod_state();
 586         break;
 587     case SDL_WINDOWEVENT_FOCUS_LOST:
 588         if (qemu_console_is_graphic(scon->dcl.con)) {
 589             win32_kbd_set_window(NULL);
 590         }
 591         if (gui_grab && !gui_fullscreen) {
 592             sdl_grab_end(scon);
 593         }
 594         break;
 595     case SDL_WINDOWEVENT_RESTORED:
 596         update_displaychangelistener(&scon->dcl, GUI_REFRESH_INTERVAL_DEFAULT);
 597         break;
 598     case SDL_WINDOWEVENT_MINIMIZED:
 599         update_displaychangelistener(&scon->dcl, 500);
 600         break;
 601     case SDL_WINDOWEVENT_CLOSE:
 602         if (qemu_console_is_graphic(scon->dcl.con)) {
 603             if (scon->opts->has_window_close && !scon->opts->window_close) {
 604                 allow_close = false;
 605             }
 606             if (allow_close) {
 607                 no_shutdown = 0;
 608                 qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_UI);
 609             }
 610         } else {
 611             SDL_HideWindow(scon->real_window);
 612             scon->hidden = true;
 613         }
 614         break;
 615     case SDL_WINDOWEVENT_SHOWN:
 616         scon->hidden = false;
 617         break;
 618     case SDL_WINDOWEVENT_HIDDEN:
 619         scon->hidden = true;
 620         break;
 621     }
 622 }
 623
 624 void sdl2_poll_events(struct sdl2_console *scon)
 625 {
 626     SDL_Event ev1, *ev = &ev1;
 627     bool allow_close = true;
 628     int idle = 1;
 629
 630     if (scon->last_vm_running != runstate_is_running()) {
 631         scon->last_vm_running = runstate_is_running();
 632         sdl_update_caption(scon);
 633     }
 634
 635     while (SDL_PollEvent(ev)) {
 636         switch (ev->type) {
 637         case SDL_KEYDOWN:
 638             idle = 0;
 639             handle_keydown(ev);
 640             break;
 641         case SDL_KEYUP:
 642             idle = 0;
 643             handle_keyup(ev);
 644             break;
 645         case SDL_TEXTINPUT:
 646             idle = 0;
 647             handle_textinput(ev);
 648             break;
 649         case SDL_QUIT:
 650             if (scon->opts->has_window_close && !scon->opts->window_close) {
 651                 allow_close = false;
 652             }
 653             if (allow_close) {
 654                 no_shutdown = 0;
 655                 qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_UI);
 656             }
 657             break;
 658         case SDL_MOUSEMOTION:
 659             idle = 0;
 660             handle_mousemotion(ev);
 661             break;
 662         case SDL_MOUSEBUTTONDOWN:
 663         case SDL_MOUSEBUTTONUP:
 664             idle = 0;
 665             handle_mousebutton(ev);
 666             break;
 667         case SDL_MOUSEWHEEL:
 668             idle = 0;
 669             handle_mousewheel(ev);
 670             break;
 671         case SDL_WINDOWEVENT:
 672             handle_windowevent(ev);
 673             break;
 674         default:
 675             break;
 676         }
 677     }
 678
 679     if (idle) {
 680         if (scon->idle_counter < SDL2_MAX_IDLE_COUNT) {
 681             scon->idle_counter++;
 682             if (scon->idle_counter >= SDL2_MAX_IDLE_COUNT) {
 683                 scon->dcl.update_interval = GUI_REFRESH_INTERVAL_DEFAULT;
 684             }
 685         }
 686     } else {
 687         scon->idle_counter = 0;
 688         scon->dcl.update_interval = SDL2_REFRESH_INTERVAL_BUSY;
 689     }
 690 }
 691
 692 static void sdl_mouse_warp(DisplayChangeListener *dcl,
 693                            int x, int y, int on)
 694 {
 695     struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
 696
 697     if (!qemu_console_is_graphic(scon->dcl.con)) {
 698         return;
 699     }
 700
 701     if (on) {
 702         if (!guest_cursor) {
 703             sdl_show_cursor(scon);
 704         }
 705         if (gui_grab || qemu_input_is_absolute() || absolute_enabled) {
 706             SDL_SetCursor(guest_sprite);
 707             if (!qemu_input_is_absolute() && !absolute_enabled) {
 708                 SDL_WarpMouseInWindow(scon->real_window, x, y);
 709             }
 710         }
 711     } else if (gui_grab) {
 712         sdl_hide_cursor(scon);
 713     }
 714     guest_cursor = on;
 715     guest_x = x, guest_y = y;
 716 }
 717
 718 static void sdl_mouse_define(DisplayChangeListener *dcl,
 719                              QEMUCursor *c)
 720 {
 721
 722     if (guest_sprite) {
 723         SDL_FreeCursor(guest_sprite);
 724     }
 725
 726     if (guest_sprite_surface) {
 727         SDL_FreeSurface(guest_sprite_surface);
 728     }
 729
 730     guest_sprite_surface =
 731         SDL_CreateRGBSurfaceFrom(c->data, c->width, c->height, 32, c->width * 4,
 732                                  0xff0000, 0x00ff00, 0xff, 0xff000000);
 733
 734     if (!guest_sprite_surface) {
 735         fprintf(stderr, "Failed to make rgb surface from %p\n", c);
 736         return;
 737     }
 738     guest_sprite = SDL_CreateColorCursor(guest_sprite_surface,
 739                                          c->hot_x, c->hot_y);
 740     if (!guest_sprite) {
 741         fprintf(stderr, "Failed to make color cursor from %p\n", c);
 742         return;
 743     }
 744     if (guest_cursor &&
 745         (gui_grab || qemu_input_is_absolute() || absolute_enabled)) {
 746         SDL_SetCursor(guest_sprite);
 747     }
 748 }
 749
 750 static void sdl_cleanup(void)
 751 {
 752     if (guest_sprite) {
 753         SDL_FreeCursor(guest_sprite);
 754     }
 755     SDL_QuitSubSystem(SDL_INIT_VIDEO);
 756 }
 757
 758 static const DisplayChangeListenerOps dcl_2d_ops = {
 759     .dpy_name             = "sdl2-2d",
 760     .dpy_gfx_update       = sdl2_2d_update,
 761     .dpy_gfx_switch       = sdl2_2d_switch,
 762     .dpy_gfx_check_format = sdl2_2d_check_format,
 763     .dpy_refresh          = sdl2_2d_refresh,
 764     .dpy_mouse_set        = sdl_mouse_warp,
 765     .dpy_cursor_define    = sdl_mouse_define,
 766 };
 767
 768 #ifdef CONFIG_OPENGL
 769 static const DisplayChangeListenerOps dcl_gl_ops = {
 770     .dpy_name                = "sdl2-gl",
 771     .dpy_gfx_update          = sdl2_gl_update,
 772     .dpy_gfx_switch          = sdl2_gl_switch,
 773     .dpy_gfx_check_format    = console_gl_check_format,
 774     .dpy_refresh             = sdl2_gl_refresh,
 775     .dpy_mouse_set           = sdl_mouse_warp,
 776     .dpy_cursor_define       = sdl_mouse_define,
 777
 778     .dpy_gl_ctx_create       = sdl2_gl_create_context,
 779     .dpy_gl_ctx_destroy      = sdl2_gl_destroy_context,
 780     .dpy_gl_ctx_make_current = sdl2_gl_make_context_current,
 781     .dpy_gl_ctx_get_current  = sdl2_gl_get_current_context,
 782     .dpy_gl_scanout_disable  = sdl2_gl_scanout_disable,
 783     .dpy_gl_scanout_texture  = sdl2_gl_scanout_texture,
 784     .dpy_gl_update           = sdl2_gl_scanout_flush,
 785 };
 786 #endif
 787
 788 static void sdl2_display_early_init(DisplayOptions *o)
 789 {
 790     assert(o->type == DISPLAY_TYPE_SDL);
 791     if (o->has_gl && o->gl) {
 792 #ifdef CONFIG_OPENGL
 793         display_opengl = 1;
 794 #endif
 795     }
 796 }
 797
 798 static void sdl2_display_init(DisplayState *ds, DisplayOptions *o)
 799 {
 800     uint8_t data = 0;
 801     int i;
 802     SDL_SysWMinfo info;
 803     SDL_Surface *icon = NULL;
 804     char *dir;
 805
 806     assert(o->type == DISPLAY_TYPE_SDL);
 807
 808 #ifdef __linux__
 809     /* on Linux, SDL may use fbcon|directfb|svgalib when run without
 810      * accessible $DISPLAY to open X11 window.  This is often the case
 811      * when qemu is run using sudo.  But in this case, and when actually
 812      * run in X11 environment, SDL fights with X11 for the video card,
 813      * making current display unavailable, often until reboot.
 814      * So make x11 the default SDL video driver if this variable is unset.
 815      * This is a bit hackish but saves us from bigger problem.
 816      * Maybe it's a good idea to fix this in SDL instead.
 817      */
 818     g_setenv("SDL_VIDEODRIVER", "x11", 0);
 819 #endif
 820
 821     if (SDL_Init(SDL_INIT_VIDEO)) {
 822         fprintf(stderr, "Could not initialize SDL(%s) - exiting\n",
 823                 SDL_GetError());
 824         exit(1);
 825     }
 826 #ifdef SDL_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR /* only available since SDL 2.0.8 */
 827     SDL_SetHint(SDL_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR, "0");
 828 #endif
 829     SDL_SetHint(SDL_HINT_GRAB_KEYBOARD, "1");
 830     memset(&info, 0, sizeof(info));
 831     SDL_VERSION(&info.version);
 832
 833     gui_fullscreen = o->has_full_screen && o->full_screen;
 834
 835     for (i = 0;; i++) {
 836         QemuConsole *con = qemu_console_lookup_by_index(i);
 837         if (!con) {
 838             break;
 839         }
 840     }
 841     sdl2_num_outputs = i;
 842     if (sdl2_num_outputs == 0) {
 843         return;
 844     }
 845     sdl2_console = g_new0(struct sdl2_console, sdl2_num_outputs);
 846     for (i = 0; i < sdl2_num_outputs; i++) {
 847         QemuConsole *con = qemu_console_lookup_by_index(i);
 848         assert(con != NULL);
 849         if (!qemu_console_is_graphic(con) &&
 850             qemu_console_get_index(con) != 0) {
 851             sdl2_console[i].hidden = true;
 852         }
 853         sdl2_console[i].idx = i;
 854         sdl2_console[i].opts = o;
 855 #ifdef CONFIG_OPENGL
 856         sdl2_console[i].opengl = display_opengl;
 857         sdl2_console[i].dcl.ops = display_opengl ? &dcl_gl_ops : &dcl_2d_ops;
 858 #else
 859         sdl2_console[i].opengl = 0;
 860         sdl2_console[i].dcl.ops = &dcl_2d_ops;
 861 #endif
 862         sdl2_console[i].dcl.con = con;
 863         sdl2_console[i].kbd = qkbd_state_init(con);
 864         register_displaychangelistener(&sdl2_console[i].dcl);
 865
 866 #if defined(SDL_VIDEO_DRIVER_WINDOWS) || defined(SDL_VIDEO_DRIVER_X11)
 867         if (SDL_GetWindowWMInfo(sdl2_console[i].real_window, &info)) {
 868 #if defined(SDL_VIDEO_DRIVER_WINDOWS)
 869             qemu_console_set_window_id(con, (uintptr_t)info.info.win.window);
 870 #elif defined(SDL_VIDEO_DRIVER_X11)
 871             qemu_console_set_window_id(con, info.info.x11.window);
 872 #endif
 873         }
 874 #endif
 875     }
 876
 877 #ifdef CONFIG_SDL_IMAGE
 878     dir = get_relocated_path(CONFIG_QEMU_ICONDIR "/hicolor/128x128/apps/qemu.png");
 879     icon = IMG_Load(dir);
 880 #else
 881     /* Load a 32x32x4 image. White pixels are transparent. */
 882     dir = get_relocated_path(CONFIG_QEMU_ICONDIR "/hicolor/32x32/apps/qemu.bmp");
 883     icon = SDL_LoadBMP(dir);
 884     if (icon) {
 885         uint32_t colorkey = SDL_MapRGB(icon->format, 255, 255, 255);
 886         SDL_SetColorKey(icon, SDL_TRUE, colorkey);
 887     }
 888 #endif
 889     g_free(dir);
 890     if (icon) {
 891         SDL_SetWindowIcon(sdl2_console[0].real_window, icon);
 892     }
 893
 894     mouse_mode_notifier.notify = sdl_mouse_mode_change;
 895     qemu_add_mouse_mode_change_notifier(&mouse_mode_notifier);
 896
 897     sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
 898     sdl_cursor_normal = SDL_GetCursor();
 899
 900     if (gui_fullscreen) {
 901         sdl_grab_start(&sdl2_console[0]);
 902     }
 903
 904     atexit(sdl_cleanup);
 905 }
 906
 907 static QemuDisplay qemu_display_sdl2 = {
 908     .type       = DISPLAY_TYPE_SDL,
 909     .early_init = sdl2_display_early_init,
 910     .init       = sdl2_display_init,
 911 };
 912
 913 static void register_sdl1(void)
 914 {
 915     qemu_display_register(&qemu_display_sdl2);
 916 }
 917
 918 type_init(register_sdl1);