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