ui/sdl2.c

   1 /*
   2  * QEMU SDL display driver
   3  *
   4  * Copyright (c) 2003 Fabrice Bellard
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24 /* Ported SDL 1.2 code to 2.0 by Dave Airlie. */
  25
  26 #include "qemu/osdep.h"
  27 #include "qemu/module.h"
  28 #include "qemu/cutils.h"
  29 #include "ui/console.h"
  30 #include "ui/input.h"
  31 #include "ui/sdl2.h"
  32 #include "sysemu/runstate.h"
  33 #include "sysemu/runstate-action.h"
  34 #include "sysemu/sysemu.h"
  35 #include "ui/win32-kbd-hook.h"
  36 #include "qemu/log.h"
  37
  38 static int sdl2_num_outputs;
  39 static struct sdl2_console *sdl2_console;
  40
  41 static SDL_Surface *guest_sprite_surface;
  42 static int gui_grab; /* if true, all keyboard/mouse events are grabbed */
  43 static bool alt_grab;
  44 static bool ctrl_grab;
  45
  46 static int gui_saved_grab;
  47 static int gui_fullscreen;
  48 static int gui_grab_code = KMOD_LALT | KMOD_LCTRL;
  49 static SDL_Cursor *sdl_cursor_normal;
  50 static SDL_Cursor *sdl_cursor_hidden;
  51 static int absolute_enabled;
  52 static int guest_cursor;
  53 static int guest_x, guest_y;
  54 static SDL_Cursor *guest_sprite;
  55 static Notifier mouse_mode_notifier;
  56
  57 #define SDL2_REFRESH_INTERVAL_BUSY 10
  58 #define SDL2_MAX_IDLE_COUNT (2 * GUI_REFRESH_INTERVAL_DEFAULT \
  59                              / SDL2_REFRESH_INTERVAL_BUSY + 1)
  60
  61 /* introduced in SDL 2.0.10 */
  62 #ifndef SDL_HINT_RENDER_BATCHING
  63 #define SDL_HINT_RENDER_BATCHING "SDL_RENDER_BATCHING"
  64 #endif
  65
  66 static void sdl_update_caption(struct sdl2_console *scon);
  67
  68 static struct sdl2_console *get_scon_from_window(uint32_t window_id)
  69 {
  70     int i;
  71     for (i = 0; i < sdl2_num_outputs; i++) {
  72         if (sdl2_console[i].real_window == SDL_GetWindowFromID(window_id)) {
  73             return &sdl2_console[i];
  74         }
  75     }
  76     return NULL;
  77 }
  78
  79 void sdl2_window_create(struct sdl2_console *scon)
  80 {
  81     int flags = 0;
  82
  83     if (!scon->surface) {
  84         return;
  85     }
  86     assert(!scon->real_window);
  87
  88     if (gui_fullscreen) {
  89         flags |= SDL_WINDOW_FULLSCREEN_DESKTOP;
  90     } else {
  91         flags |= SDL_WINDOW_RESIZABLE;
  92     }
  93     if (scon->hidden) {
  94         flags |= SDL_WINDOW_HIDDEN;
  95     }
  96 #ifdef CONFIG_OPENGL
  97     if (scon->opengl) {
  98         flags |= SDL_WINDOW_OPENGL;
  99     }
 100 #endif
 101
 102     scon->real_window = SDL_CreateWindow("", SDL_WINDOWPOS_UNDEFINED,
 103                                          SDL_WINDOWPOS_UNDEFINED,
 104                                          surface_width(scon->surface),
 105                                          surface_height(scon->surface),
 106                                          flags);
 107     if (scon->opengl) {
 108         const char *driver = "opengl";
 109
 110         if (scon->opts->gl == DISPLAYGL_MODE_ES) {
 111             driver = "opengles2";
 112         }
 113
 114         SDL_SetHint(SDL_HINT_RENDER_DRIVER, driver);
 115         SDL_SetHint(SDL_HINT_RENDER_BATCHING, "1");
 116
 117         scon->winctx = SDL_GL_CreateContext(scon->real_window);
 118     } else {
 119         /* The SDL renderer is only used by sdl2-2D, when OpenGL is disabled */
 120         scon->real_renderer = SDL_CreateRenderer(scon->real_window, -1, 0);
 121     }
 122     sdl_update_caption(scon);
 123 }
 124
 125 void sdl2_window_destroy(struct sdl2_console *scon)
 126 {
 127     if (!scon->real_window) {
 128         return;
 129     }
 130
 131     if (scon->winctx) {
 132         SDL_GL_DeleteContext(scon->winctx);
 133         scon->winctx = NULL;
 134     }
 135     if (scon->real_renderer) {
 136         SDL_DestroyRenderer(scon->real_renderer);
 137         scon->real_renderer = NULL;
 138     }
 139     SDL_DestroyWindow(scon->real_window);
 140     scon->real_window = NULL;
 141 }
 142
 143 void sdl2_window_resize(struct sdl2_console *scon)
 144 {
 145     if (!scon->real_window) {
 146         return;
 147     }
 148
 149     SDL_SetWindowSize(scon->real_window,
 150                       surface_width(scon->surface),
 151                       surface_height(scon->surface));
 152 }
 153
 154 static void sdl2_redraw(struct sdl2_console *scon)
 155 {
 156     if (scon->opengl) {
 157 #ifdef CONFIG_OPENGL
 158         sdl2_gl_redraw(scon);
 159 #endif
 160     } else {
 161         sdl2_2d_redraw(scon);
 162     }
 163 }
 164
 165 static void sdl_update_caption(struct sdl2_console *scon)
 166 {
 167     char win_title[1024];
 168     char icon_title[1024];
 169     const char *status = "";
 170
 171     if (!runstate_is_running()) {
 172         status = " [Stopped]";
 173     } else if (gui_grab) {
 174         if (alt_grab) {
 175             status = " - Press Ctrl-Alt-Shift-G to exit grab";
 176         } else if (ctrl_grab) {
 177             status = " - Press Right-Ctrl-G to exit grab";
 178         } else {
 179             status = " - Press Ctrl-Alt-G to exit grab";
 180         }
 181     }
 182
 183     if (qemu_name) {
 184         snprintf(win_title, sizeof(win_title), "QEMU (%s-%d)%s", qemu_name,
 185                  scon->idx, status);
 186         snprintf(icon_title, sizeof(icon_title), "QEMU (%s)", qemu_name);
 187     } else {
 188         snprintf(win_title, sizeof(win_title), "QEMU%s", status);
 189         snprintf(icon_title, sizeof(icon_title), "QEMU");
 190     }
 191
 192     if (scon->real_window) {
 193         SDL_SetWindowTitle(scon->real_window, win_title);
 194     }
 195 }
 196
 197 static void sdl_hide_cursor(struct sdl2_console *scon)
 198 {
 199     if (scon->opts->has_show_cursor && scon->opts->show_cursor) {
 200         return;
 201     }
 202
 203     SDL_ShowCursor(SDL_DISABLE);
 204     SDL_SetCursor(sdl_cursor_hidden);
 205
 206     if (!qemu_input_is_absolute()) {
 207         SDL_SetRelativeMouseMode(SDL_TRUE);
 208     }
 209 }
 210
 211 static void sdl_show_cursor(struct sdl2_console *scon)
 212 {
 213     if (scon->opts->has_show_cursor && scon->opts->show_cursor) {
 214         return;
 215     }
 216
 217     if (!qemu_input_is_absolute()) {
 218         SDL_SetRelativeMouseMode(SDL_FALSE);
 219     }
 220
 221     if (guest_cursor &&
 222         (gui_grab || qemu_input_is_absolute() || absolute_enabled)) {
 223         SDL_SetCursor(guest_sprite);
 224     } else {
 225         SDL_SetCursor(sdl_cursor_normal);
 226     }
 227
 228     SDL_ShowCursor(SDL_ENABLE);
 229 }
 230
 231 static void sdl_grab_start(struct sdl2_console *scon)
 232 {
 233     QemuConsole *con = scon ? scon->dcl.con : NULL;
 234
 235     if (!con || !qemu_console_is_graphic(con)) {
 236         return;
 237     }
 238     /*
 239      * If the application is not active, do not try to enter grab state. This
 240      * prevents 'SDL_WM_GrabInput(SDL_GRAB_ON)' from blocking all the
 241      * application (SDL bug).
 242      */
 243     if (!(SDL_GetWindowFlags(scon->real_window) & SDL_WINDOW_INPUT_FOCUS)) {
 244         return;
 245     }
 246     if (guest_cursor) {
 247         SDL_SetCursor(guest_sprite);
 248         if (!qemu_input_is_absolute() && !absolute_enabled) {
 249             SDL_WarpMouseInWindow(scon->real_window, guest_x, guest_y);
 250         }
 251     } else {
 252         sdl_hide_cursor(scon);
 253     }
 254     SDL_SetWindowGrab(scon->real_window, SDL_TRUE);
 255     gui_grab = 1;
 256     win32_kbd_set_grab(true);
 257     sdl_update_caption(scon);
 258 }
 259
 260 static void sdl_grab_end(struct sdl2_console *scon)
 261 {
 262     SDL_SetWindowGrab(scon->real_window, SDL_FALSE);
 263     gui_grab = 0;
 264     win32_kbd_set_grab(false);
 265     sdl_show_cursor(scon);
 266     sdl_update_caption(scon);
 267 }
 268
 269 static void absolute_mouse_grab(struct sdl2_console *scon)
 270 {
 271     int mouse_x, mouse_y;
 272     int scr_w, scr_h;
 273     SDL_GetMouseState(&mouse_x, &mouse_y);
 274     SDL_GetWindowSize(scon->real_window, &scr_w, &scr_h);
 275     if (mouse_x > 0 && mouse_x < scr_w - 1 &&
 276         mouse_y > 0 && mouse_y < scr_h - 1) {
 277         sdl_grab_start(scon);
 278     }
 279 }
 280
 281 static void sdl_mouse_mode_change(Notifier *notify, void *data)
 282 {
 283     if (qemu_input_is_absolute()) {
 284         if (!absolute_enabled) {
 285             absolute_enabled = 1;
 286             SDL_SetRelativeMouseMode(SDL_FALSE);
 287             absolute_mouse_grab(&sdl2_console[0]);
 288         }
 289     } else if (absolute_enabled) {
 290         if (!gui_fullscreen) {
 291             sdl_grab_end(&sdl2_console[0]);
 292         }
 293         absolute_enabled = 0;
 294     }
 295 }
 296
 297 static void sdl_send_mouse_event(struct sdl2_console *scon, int dx, int dy,
 298                                  int x, int y, int state)
 299 {
 300     static uint32_t bmap[INPUT_BUTTON__MAX] = {
 301         [INPUT_BUTTON_LEFT]       = SDL_BUTTON(SDL_BUTTON_LEFT),
 302         [INPUT_BUTTON_MIDDLE]     = SDL_BUTTON(SDL_BUTTON_MIDDLE),
 303         [INPUT_BUTTON_RIGHT]      = SDL_BUTTON(SDL_BUTTON_RIGHT),
 304         [INPUT_BUTTON_SIDE]       = SDL_BUTTON(SDL_BUTTON_X1),
 305         [INPUT_BUTTON_EXTRA]      = SDL_BUTTON(SDL_BUTTON_X2)
 306     };
 307     static uint32_t prev_state;
 308
 309     if (prev_state != state) {
 310         qemu_input_update_buttons(scon->dcl.con, bmap, prev_state, state);
 311         prev_state = state;
 312     }
 313
 314     if (qemu_input_is_absolute()) {
 315         qemu_input_queue_abs(scon->dcl.con, INPUT_AXIS_X,
 316                              x, 0, surface_width(scon->surface));
 317         qemu_input_queue_abs(scon->dcl.con, INPUT_AXIS_Y,
 318                              y, 0, surface_height(scon->surface));
 319     } else {
 320         if (guest_cursor) {
 321             x -= guest_x;
 322             y -= guest_y;
 323             guest_x += x;
 324             guest_y += y;
 325             dx = x;
 326             dy = y;
 327         }
 328         qemu_input_queue_rel(scon->dcl.con, INPUT_AXIS_X, dx);
 329         qemu_input_queue_rel(scon->dcl.con, INPUT_AXIS_Y, dy);
 330     }
 331     qemu_input_event_sync();
 332 }
 333
 334 static void toggle_full_screen(struct sdl2_console *scon)
 335 {
 336     gui_fullscreen = !gui_fullscreen;
 337     if (gui_fullscreen) {
 338         SDL_SetWindowFullscreen(scon->real_window,
 339                                 SDL_WINDOW_FULLSCREEN_DESKTOP);
 340         gui_saved_grab = gui_grab;
 341         sdl_grab_start(scon);
 342     } else {
 343         if (!gui_saved_grab) {
 344             sdl_grab_end(scon);
 345         }
 346         SDL_SetWindowFullscreen(scon->real_window, 0);
 347     }
 348     sdl2_redraw(scon);
 349 }
 350
 351 static int get_mod_state(void)
 352 {
 353     SDL_Keymod mod = SDL_GetModState();
 354
 355     if (alt_grab) {
 356         return (mod & (gui_grab_code | KMOD_LSHIFT)) ==
 357             (gui_grab_code | KMOD_LSHIFT);
 358     } else if (ctrl_grab) {
 359         return (mod & KMOD_RCTRL) == KMOD_RCTRL;
 360     } else {
 361         return (mod & gui_grab_code) == gui_grab_code;
 362     }
 363 }
 364
 365 static void *sdl2_win32_get_hwnd(struct sdl2_console *scon)
 366 {
 367 #ifdef CONFIG_WIN32
 368     SDL_SysWMinfo info;
 369
 370     SDL_VERSION(&info.version);
 371     if (SDL_GetWindowWMInfo(scon->real_window, &info)) {
 372         return info.info.win.window;
 373     }
 374 #endif
 375     return NULL;
 376 }
 377
 378 static void handle_keydown(SDL_Event *ev)
 379 {
 380     int win;
 381     struct sdl2_console *scon = get_scon_from_window(ev->key.windowID);
 382     int gui_key_modifier_pressed = get_mod_state();
 383     int gui_keysym = 0;
 384
 385     if (!scon) {
 386         return;
 387     }
 388
 389     if (!scon->ignore_hotkeys && gui_key_modifier_pressed && !ev->key.repeat) {
 390         switch (ev->key.keysym.scancode) {
 391         case SDL_SCANCODE_2:
 392         case SDL_SCANCODE_3:
 393         case SDL_SCANCODE_4:
 394         case SDL_SCANCODE_5:
 395         case SDL_SCANCODE_6:
 396         case SDL_SCANCODE_7:
 397         case SDL_SCANCODE_8:
 398         case SDL_SCANCODE_9:
 399             if (gui_grab) {
 400                 sdl_grab_end(scon);
 401             }
 402
 403             win = ev->key.keysym.scancode - SDL_SCANCODE_1;
 404             if (win < sdl2_num_outputs) {
 405                 sdl2_console[win].hidden = !sdl2_console[win].hidden;
 406                 if (sdl2_console[win].real_window) {
 407                     if (sdl2_console[win].hidden) {
 408                         SDL_HideWindow(sdl2_console[win].real_window);
 409                     } else {
 410                         SDL_ShowWindow(sdl2_console[win].real_window);
 411                     }
 412                 }
 413                 gui_keysym = 1;
 414             }
 415             break;
 416         case SDL_SCANCODE_F:
 417             toggle_full_screen(scon);
 418             gui_keysym = 1;
 419             break;
 420         case SDL_SCANCODE_G:
 421             gui_keysym = 1;
 422             if (!gui_grab) {
 423                 sdl_grab_start(scon);
 424             } else if (!gui_fullscreen) {
 425                 sdl_grab_end(scon);
 426             }
 427             break;
 428         case SDL_SCANCODE_U:
 429             sdl2_window_resize(scon);
 430             if (!scon->opengl) {
 431                 /* re-create scon->texture */
 432                 sdl2_2d_switch(&scon->dcl, scon->surface);
 433             }
 434             gui_keysym = 1;
 435             break;
 436 #if 0
 437         case SDL_SCANCODE_KP_PLUS:
 438         case SDL_SCANCODE_KP_MINUS:
 439             if (!gui_fullscreen) {
 440                 int scr_w, scr_h;
 441                 int width, height;
 442                 SDL_GetWindowSize(scon->real_window, &scr_w, &scr_h);
 443
 444                 width = MAX(scr_w + (ev->key.keysym.scancode ==
 445                                      SDL_SCANCODE_KP_PLUS ? 50 : -50),
 446                             160);
 447                 height = (surface_height(scon->surface) * width) /
 448                     surface_width(scon->surface);
 449                 fprintf(stderr, "%s: scale to %dx%d\n",
 450                         __func__, width, height);
 451                 sdl_scale(scon, width, height);
 452                 sdl2_redraw(scon);
 453                 gui_keysym = 1;
 454             }
 455 #endif
 456         default:
 457             break;
 458         }
 459     }
 460     if (!gui_keysym) {
 461         sdl2_process_key(scon, &ev->key);
 462     }
 463 }
 464
 465 static void handle_keyup(SDL_Event *ev)
 466 {
 467     struct sdl2_console *scon = get_scon_from_window(ev->key.windowID);
 468
 469     if (!scon) {
 470         return;
 471     }
 472
 473     scon->ignore_hotkeys = false;
 474     sdl2_process_key(scon, &ev->key);
 475 }
 476
 477 static void handle_textinput(SDL_Event *ev)
 478 {
 479     struct sdl2_console *scon = get_scon_from_window(ev->text.windowID);
 480     QemuConsole *con = scon ? scon->dcl.con : NULL;
 481
 482     if (!con) {
 483         return;
 484     }
 485
 486     if (QEMU_IS_TEXT_CONSOLE(con)) {
 487         qemu_text_console_put_string(QEMU_TEXT_CONSOLE(con), ev->text.text, strlen(ev->text.text));
 488     }
 489 }
 490
 491 static void handle_mousemotion(SDL_Event *ev)
 492 {
 493     int max_x, max_y;
 494     struct sdl2_console *scon = get_scon_from_window(ev->motion.windowID);
 495
 496     if (!scon || !qemu_console_is_graphic(scon->dcl.con)) {
 497         return;
 498     }
 499
 500     if (qemu_input_is_absolute() || absolute_enabled) {
 501         int scr_w, scr_h;
 502         SDL_GetWindowSize(scon->real_window, &scr_w, &scr_h);
 503         max_x = scr_w - 1;
 504         max_y = scr_h - 1;
 505         if (gui_grab && !gui_fullscreen
 506             && (ev->motion.x == 0 || ev->motion.y == 0 ||
 507                 ev->motion.x == max_x || ev->motion.y == max_y)) {
 508             sdl_grab_end(scon);
 509         }
 510         if (!gui_grab &&
 511             (ev->motion.x > 0 && ev->motion.x < max_x &&
 512              ev->motion.y > 0 && ev->motion.y < max_y)) {
 513             sdl_grab_start(scon);
 514         }
 515     }
 516     if (gui_grab || qemu_input_is_absolute() || absolute_enabled) {
 517         sdl_send_mouse_event(scon, ev->motion.xrel, ev->motion.yrel,
 518                              ev->motion.x, ev->motion.y, ev->motion.state);
 519     }
 520 }
 521
 522 static void handle_mousebutton(SDL_Event *ev)
 523 {
 524     int buttonstate = SDL_GetMouseState(NULL, NULL);
 525     SDL_MouseButtonEvent *bev;
 526     struct sdl2_console *scon = get_scon_from_window(ev->button.windowID);
 527
 528     if (!scon || !qemu_console_is_graphic(scon->dcl.con)) {
 529         return;
 530     }
 531
 532     bev = &ev->button;
 533     if (!gui_grab && !qemu_input_is_absolute()) {
 534         if (ev->type == SDL_MOUSEBUTTONUP && bev->button == SDL_BUTTON_LEFT) {
 535             /* start grabbing all events */
 536             sdl_grab_start(scon);
 537         }
 538     } else {
 539         if (ev->type == SDL_MOUSEBUTTONDOWN) {
 540             buttonstate |= SDL_BUTTON(bev->button);
 541         } else {
 542             buttonstate &= ~SDL_BUTTON(bev->button);
 543         }
 544         sdl_send_mouse_event(scon, 0, 0, bev->x, bev->y, buttonstate);
 545     }
 546 }
 547
 548 static void handle_mousewheel(SDL_Event *ev)
 549 {
 550     struct sdl2_console *scon = get_scon_from_window(ev->wheel.windowID);
 551     SDL_MouseWheelEvent *wev = &ev->wheel;
 552     InputButton btn;
 553
 554     if (!scon || !qemu_console_is_graphic(scon->dcl.con)) {
 555         return;
 556     }
 557
 558     if (wev->y > 0) {
 559         btn = INPUT_BUTTON_WHEEL_UP;
 560     } else if (wev->y < 0) {
 561         btn = INPUT_BUTTON_WHEEL_DOWN;
 562     } else if (wev->x < 0) {
 563         btn = INPUT_BUTTON_WHEEL_RIGHT;
 564     } else if (wev->x > 0) {
 565         btn = INPUT_BUTTON_WHEEL_LEFT;
 566     } else {
 567         return;
 568     }
 569
 570     qemu_input_queue_btn(scon->dcl.con, btn, true);
 571     qemu_input_event_sync();
 572     qemu_input_queue_btn(scon->dcl.con, btn, false);
 573     qemu_input_event_sync();
 574 }
 575
 576 static void handle_windowevent(SDL_Event *ev)
 577 {
 578     struct sdl2_console *scon = get_scon_from_window(ev->window.windowID);
 579     bool allow_close = true;
 580
 581     if (!scon) {
 582         return;
 583     }
 584
 585     switch (ev->window.event) {
 586     case SDL_WINDOWEVENT_RESIZED:
 587         {
 588             QemuUIInfo info;
 589             memset(&info, 0, sizeof(info));
 590             info.width = ev->window.data1;
 591             info.height = ev->window.data2;
 592             dpy_set_ui_info(scon->dcl.con, &info, true);
 593         }
 594         sdl2_redraw(scon);
 595         break;
 596     case SDL_WINDOWEVENT_EXPOSED:
 597         sdl2_redraw(scon);
 598         break;
 599     case SDL_WINDOWEVENT_FOCUS_GAINED:
 600         win32_kbd_set_grab(gui_grab);
 601         if (qemu_console_is_graphic(scon->dcl.con)) {
 602             win32_kbd_set_window(sdl2_win32_get_hwnd(scon));
 603         }
 604         /* fall through */
 605     case SDL_WINDOWEVENT_ENTER:
 606         if (!gui_grab && (qemu_input_is_absolute() || absolute_enabled)) {
 607             absolute_mouse_grab(scon);
 608         }
 609         /* If a new console window opened using a hotkey receives the
 610          * focus, SDL sends another KEYDOWN event to the new window,
 611          * closing the console window immediately after.
 612          *
 613          * Work around this by ignoring further hotkey events until a
 614          * key is released.
 615          */
 616         scon->ignore_hotkeys = get_mod_state();
 617         break;
 618     case SDL_WINDOWEVENT_FOCUS_LOST:
 619         if (qemu_console_is_graphic(scon->dcl.con)) {
 620             win32_kbd_set_window(NULL);
 621         }
 622         if (gui_grab && !gui_fullscreen) {
 623             sdl_grab_end(scon);
 624         }
 625         break;
 626     case SDL_WINDOWEVENT_RESTORED:
 627         update_displaychangelistener(&scon->dcl, GUI_REFRESH_INTERVAL_DEFAULT);
 628         break;
 629     case SDL_WINDOWEVENT_MINIMIZED:
 630         update_displaychangelistener(&scon->dcl, 500);
 631         break;
 632     case SDL_WINDOWEVENT_CLOSE:
 633         if (qemu_console_is_graphic(scon->dcl.con)) {
 634             if (scon->opts->has_window_close && !scon->opts->window_close) {
 635                 allow_close = false;
 636             }
 637             if (allow_close) {
 638                 shutdown_action = SHUTDOWN_ACTION_POWEROFF;
 639                 qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_UI);
 640             }
 641         } else {
 642             SDL_HideWindow(scon->real_window);
 643             scon->hidden = true;
 644         }
 645         break;
 646     case SDL_WINDOWEVENT_SHOWN:
 647         scon->hidden = false;
 648         break;
 649     case SDL_WINDOWEVENT_HIDDEN:
 650         scon->hidden = true;
 651         break;
 652     }
 653 }
 654
 655 void sdl2_poll_events(struct sdl2_console *scon)
 656 {
 657     SDL_Event ev1, *ev = &ev1;
 658     bool allow_close = true;
 659     int idle = 1;
 660
 661     if (scon->last_vm_running != runstate_is_running()) {
 662         scon->last_vm_running = runstate_is_running();
 663         sdl_update_caption(scon);
 664     }
 665
 666     while (SDL_PollEvent(ev)) {
 667         switch (ev->type) {
 668         case SDL_KEYDOWN:
 669             idle = 0;
 670             handle_keydown(ev);
 671             break;
 672         case SDL_KEYUP:
 673             idle = 0;
 674             handle_keyup(ev);
 675             break;
 676         case SDL_TEXTINPUT:
 677             idle = 0;
 678             handle_textinput(ev);
 679             break;
 680         case SDL_QUIT:
 681             if (scon->opts->has_window_close && !scon->opts->window_close) {
 682                 allow_close = false;
 683             }
 684             if (allow_close) {
 685                 shutdown_action = SHUTDOWN_ACTION_POWEROFF;
 686                 qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_UI);
 687             }
 688             break;
 689         case SDL_MOUSEMOTION:
 690             idle = 0;
 691             handle_mousemotion(ev);
 692             break;
 693         case SDL_MOUSEBUTTONDOWN:
 694         case SDL_MOUSEBUTTONUP:
 695             idle = 0;
 696             handle_mousebutton(ev);
 697             break;
 698         case SDL_MOUSEWHEEL:
 699             idle = 0;
 700             handle_mousewheel(ev);
 701             break;
 702         case SDL_WINDOWEVENT:
 703             handle_windowevent(ev);
 704             break;
 705         default:
 706             break;
 707         }
 708     }
 709
 710     if (idle) {
 711         if (scon->idle_counter < SDL2_MAX_IDLE_COUNT) {
 712             scon->idle_counter++;
 713             if (scon->idle_counter >= SDL2_MAX_IDLE_COUNT) {
 714                 scon->dcl.update_interval = GUI_REFRESH_INTERVAL_DEFAULT;
 715             }
 716         }
 717     } else {
 718         scon->idle_counter = 0;
 719         scon->dcl.update_interval = SDL2_REFRESH_INTERVAL_BUSY;
 720     }
 721 }
 722
 723 static void sdl_mouse_warp(DisplayChangeListener *dcl,
 724                            int x, int y, int on)
 725 {
 726     struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
 727
 728     if (!qemu_console_is_graphic(scon->dcl.con)) {
 729         return;
 730     }
 731
 732     if (on) {
 733         if (!guest_cursor) {
 734             sdl_show_cursor(scon);
 735         }
 736         if (gui_grab || qemu_input_is_absolute() || absolute_enabled) {
 737             SDL_SetCursor(guest_sprite);
 738             if (!qemu_input_is_absolute() && !absolute_enabled) {
 739                 SDL_WarpMouseInWindow(scon->real_window, x, y);
 740             }
 741         }
 742     } else if (gui_grab) {
 743         sdl_hide_cursor(scon);
 744     }
 745     guest_cursor = on;
 746     guest_x = x, guest_y = y;
 747 }
 748
 749 static void sdl_mouse_define(DisplayChangeListener *dcl,
 750                              QEMUCursor *c)
 751 {
 752
 753     if (guest_sprite) {
 754         SDL_FreeCursor(guest_sprite);
 755     }
 756
 757     if (guest_sprite_surface) {
 758         SDL_FreeSurface(guest_sprite_surface);
 759     }
 760
 761     guest_sprite_surface =
 762         SDL_CreateRGBSurfaceFrom(c->data, c->width, c->height, 32, c->width * 4,
 763                                  0xff0000, 0x00ff00, 0xff, 0xff000000);
 764
 765     if (!guest_sprite_surface) {
 766         fprintf(stderr, "Failed to make rgb surface from %p\n", c);
 767         return;
 768     }
 769     guest_sprite = SDL_CreateColorCursor(guest_sprite_surface,
 770                                          c->hot_x, c->hot_y);
 771     if (!guest_sprite) {
 772         fprintf(stderr, "Failed to make color cursor from %p\n", c);
 773         return;
 774     }
 775     if (guest_cursor &&
 776         (gui_grab || qemu_input_is_absolute() || absolute_enabled)) {
 777         SDL_SetCursor(guest_sprite);
 778     }
 779 }
 780
 781 static void sdl_cleanup(void)
 782 {
 783     if (guest_sprite) {
 784         SDL_FreeCursor(guest_sprite);
 785     }
 786     SDL_QuitSubSystem(SDL_INIT_VIDEO);
 787 }
 788
 789 static const DisplayChangeListenerOps dcl_2d_ops = {
 790     .dpy_name             = "sdl2-2d",
 791     .dpy_gfx_update       = sdl2_2d_update,
 792     .dpy_gfx_switch       = sdl2_2d_switch,
 793     .dpy_gfx_check_format = sdl2_2d_check_format,
 794     .dpy_refresh          = sdl2_2d_refresh,
 795     .dpy_mouse_set        = sdl_mouse_warp,
 796     .dpy_cursor_define    = sdl_mouse_define,
 797 };
 798
 799 #ifdef CONFIG_OPENGL
 800 static const DisplayChangeListenerOps dcl_gl_ops = {
 801     .dpy_name                = "sdl2-gl",
 802     .dpy_gfx_update          = sdl2_gl_update,
 803     .dpy_gfx_switch          = sdl2_gl_switch,
 804     .dpy_gfx_check_format    = console_gl_check_format,
 805     .dpy_refresh             = sdl2_gl_refresh,
 806     .dpy_mouse_set           = sdl_mouse_warp,
 807     .dpy_cursor_define       = sdl_mouse_define,
 808
 809     .dpy_gl_scanout_disable  = sdl2_gl_scanout_disable,
 810     .dpy_gl_scanout_texture  = sdl2_gl_scanout_texture,
 811     .dpy_gl_update           = sdl2_gl_scanout_flush,
 812 };
 813
 814 static bool
 815 sdl2_gl_is_compatible_dcl(DisplayGLCtx *dgc,
 816                           DisplayChangeListener *dcl)
 817 {
 818     return dcl->ops == &dcl_gl_ops;
 819 }
 820
 821 static const DisplayGLCtxOps gl_ctx_ops = {
 822     .dpy_gl_ctx_is_compatible_dcl = sdl2_gl_is_compatible_dcl,
 823     .dpy_gl_ctx_create       = sdl2_gl_create_context,
 824     .dpy_gl_ctx_destroy      = sdl2_gl_destroy_context,
 825     .dpy_gl_ctx_make_current = sdl2_gl_make_context_current,
 826 };
 827 #endif
 828
 829 static void sdl2_display_early_init(DisplayOptions *o)
 830 {
 831     assert(o->type == DISPLAY_TYPE_SDL);
 832     if (o->has_gl && o->gl) {
 833 #ifdef CONFIG_OPENGL
 834         display_opengl = 1;
 835 #endif
 836     }
 837 }
 838
 839 static void sdl2_display_init(DisplayState *ds, DisplayOptions *o)
 840 {
 841     uint8_t data = 0;
 842     int i;
 843     SDL_SysWMinfo info;
 844     SDL_Surface *icon = NULL;
 845     char *dir;
 846
 847     assert(o->type == DISPLAY_TYPE_SDL);
 848
 849     if (SDL_GetHintBoolean("QEMU_ENABLE_SDL_LOGGING", SDL_FALSE)) {
 850         SDL_LogSetAllPriority(SDL_LOG_PRIORITY_VERBOSE);
 851     }
 852
 853     if (SDL_Init(SDL_INIT_VIDEO)) {
 854         fprintf(stderr, "Could not initialize SDL(%s) - exiting\n",
 855                 SDL_GetError());
 856         exit(1);
 857     }
 858 #ifdef SDL_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR /* only available since SDL 2.0.8 */
 859     SDL_SetHint(SDL_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR, "0");
 860 #endif
 861 #ifndef CONFIG_WIN32
 862     /* QEMU uses its own low level keyboard hook procedure on Windows */
 863     SDL_SetHint(SDL_HINT_GRAB_KEYBOARD, "1");
 864 #endif
 865 #ifdef SDL_HINT_ALLOW_ALT_TAB_WHILE_GRABBED
 866     SDL_SetHint(SDL_HINT_ALLOW_ALT_TAB_WHILE_GRABBED, "0");
 867 #endif
 868     SDL_SetHint(SDL_HINT_WINDOWS_NO_CLOSE_ON_ALT_F4, "1");
 869     memset(&info, 0, sizeof(info));
 870     SDL_VERSION(&info.version);
 871
 872     gui_fullscreen = o->has_full_screen && o->full_screen;
 873
 874     if (o->u.sdl.has_grab_mod) {
 875         if (o->u.sdl.grab_mod == HOT_KEY_MOD_LSHIFT_LCTRL_LALT) {
 876             alt_grab = true;
 877         } else if (o->u.sdl.grab_mod == HOT_KEY_MOD_RCTRL) {
 878             ctrl_grab = true;
 879         }
 880     }
 881
 882     for (i = 0;; i++) {
 883         QemuConsole *con = qemu_console_lookup_by_index(i);
 884         if (!con) {
 885             break;
 886         }
 887     }
 888     sdl2_num_outputs = i;
 889     if (sdl2_num_outputs == 0) {
 890         return;
 891     }
 892     sdl2_console = g_new0(struct sdl2_console, sdl2_num_outputs);
 893     for (i = 0; i < sdl2_num_outputs; i++) {
 894         QemuConsole *con = qemu_console_lookup_by_index(i);
 895         assert(con != NULL);
 896         if (!qemu_console_is_graphic(con) &&
 897             qemu_console_get_index(con) != 0) {
 898             sdl2_console[i].hidden = true;
 899         }
 900         sdl2_console[i].idx = i;
 901         sdl2_console[i].opts = o;
 902 #ifdef CONFIG_OPENGL
 903         sdl2_console[i].opengl = display_opengl;
 904         sdl2_console[i].dcl.ops = display_opengl ? &dcl_gl_ops : &dcl_2d_ops;
 905         sdl2_console[i].dgc.ops = display_opengl ? &gl_ctx_ops : NULL;
 906 #else
 907         sdl2_console[i].opengl = 0;
 908         sdl2_console[i].dcl.ops = &dcl_2d_ops;
 909 #endif
 910         sdl2_console[i].dcl.con = con;
 911         sdl2_console[i].kbd = qkbd_state_init(con);
 912         if (display_opengl) {
 913             qemu_console_set_display_gl_ctx(con, &sdl2_console[i].dgc);
 914         }
 915         register_displaychangelistener(&sdl2_console[i].dcl);
 916
 917 #if defined(SDL_VIDEO_DRIVER_WINDOWS) || defined(SDL_VIDEO_DRIVER_X11)
 918         if (SDL_GetWindowWMInfo(sdl2_console[i].real_window, &info)) {
 919 #if defined(SDL_VIDEO_DRIVER_WINDOWS)
 920             qemu_console_set_window_id(con, (uintptr_t)info.info.win.window);
 921 #elif defined(SDL_VIDEO_DRIVER_X11)
 922             qemu_console_set_window_id(con, info.info.x11.window);
 923 #endif
 924         }
 925 #endif
 926     }
 927
 928 #ifdef CONFIG_SDL_IMAGE
 929     dir = get_relocated_path(CONFIG_QEMU_ICONDIR "/hicolor/128x128/apps/qemu.png");
 930     icon = IMG_Load(dir);
 931 #else
 932     /* Load a 32x32x4 image. White pixels are transparent. */
 933     dir = get_relocated_path(CONFIG_QEMU_ICONDIR "/hicolor/32x32/apps/qemu.bmp");
 934     icon = SDL_LoadBMP(dir);
 935     if (icon) {
 936         uint32_t colorkey = SDL_MapRGB(icon->format, 255, 255, 255);
 937         SDL_SetColorKey(icon, SDL_TRUE, colorkey);
 938     }
 939 #endif
 940     g_free(dir);
 941     if (icon) {
 942         SDL_SetWindowIcon(sdl2_console[0].real_window, icon);
 943     }
 944
 945     mouse_mode_notifier.notify = sdl_mouse_mode_change;
 946     qemu_add_mouse_mode_change_notifier(&mouse_mode_notifier);
 947
 948     sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
 949     sdl_cursor_normal = SDL_GetCursor();
 950
 951     if (gui_fullscreen) {
 952         sdl_grab_start(&sdl2_console[0]);
 953     }
 954
 955     atexit(sdl_cleanup);
 956 }
 957
 958 static QemuDisplay qemu_display_sdl2 = {
 959     .type       = DISPLAY_TYPE_SDL,
 960     .early_init = sdl2_display_early_init,
 961     .init       = sdl2_display_init,
 962 };
 963
 964 static void register_sdl1(void)
 965 {
 966     qemu_display_register(&qemu_display_sdl2);
 967 }
 968
 969 type_init(register_sdl1);
 970
 971 #ifdef CONFIG_OPENGL
 972 module_dep("ui-opengl");
 973 #endif