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 static void sdl_update_caption(struct sdl2_console *scon);
  62
  63 static struct sdl2_console *get_scon_from_window(uint32_t window_id)
  64 {
  65     int i;
  66     for (i = 0; i < sdl2_num_outputs; i++) {
  67         if (sdl2_console[i].real_window == SDL_GetWindowFromID(window_id)) {
  68             return &sdl2_console[i];
  69         }
  70     }
  71     return NULL;
  72 }
  73
  74 void sdl2_window_create(struct sdl2_console *scon)
  75 {
  76     int flags = 0;
  77
  78     if (!scon->surface) {
  79         return;
  80     }
  81     assert(!scon->real_window);
  82
  83     if (gui_fullscreen) {
  84         flags |= SDL_WINDOW_FULLSCREEN_DESKTOP;
  85     } else {
  86         flags |= SDL_WINDOW_RESIZABLE;
  87     }
  88     if (scon->hidden) {
  89         flags |= SDL_WINDOW_HIDDEN;
  90     }
  91 #ifdef CONFIG_OPENGL
  92     if (scon->opengl) {
  93         flags |= SDL_WINDOW_OPENGL;
  94     }
  95 #endif
  96
  97     scon->real_window = SDL_CreateWindow("", SDL_WINDOWPOS_UNDEFINED,
  98                                          SDL_WINDOWPOS_UNDEFINED,
  99                                          surface_width(scon->surface),
 100                                          surface_height(scon->surface),
 101                                          flags);
 102     scon->real_renderer = SDL_CreateRenderer(scon->real_window, -1, 0);
 103     if (scon->opengl) {
 104         scon->winctx = SDL_GL_GetCurrentContext();
 105     }
 106     sdl_update_caption(scon);
 107 }
 108
 109 void sdl2_window_destroy(struct sdl2_console *scon)
 110 {
 111     if (!scon->real_window) {
 112         return;
 113     }
 114
 115     SDL_DestroyRenderer(scon->real_renderer);
 116     scon->real_renderer = NULL;
 117     SDL_DestroyWindow(scon->real_window);
 118     scon->real_window = NULL;
 119 }
 120
 121 void sdl2_window_resize(struct sdl2_console *scon)
 122 {
 123     if (!scon->real_window) {
 124         return;
 125     }
 126
 127     SDL_SetWindowSize(scon->real_window,
 128                       surface_width(scon->surface),
 129                       surface_height(scon->surface));
 130 }
 131
 132 static void sdl2_redraw(struct sdl2_console *scon)
 133 {
 134     if (scon->opengl) {
 135 #ifdef CONFIG_OPENGL
 136         sdl2_gl_redraw(scon);
 137 #endif
 138     } else {
 139         sdl2_2d_redraw(scon);
 140     }
 141 }
 142
 143 static void sdl_update_caption(struct sdl2_console *scon)
 144 {
 145     char win_title[1024];
 146     char icon_title[1024];
 147     const char *status = "";
 148
 149     if (!runstate_is_running()) {
 150         status = " [Stopped]";
 151     } else if (gui_grab) {
 152         if (alt_grab) {
 153             status = " - Press Ctrl-Alt-Shift-G to exit grab";
 154         } else if (ctrl_grab) {
 155             status = " - Press Right-Ctrl-G to exit grab";
 156         } else {
 157             status = " - Press Ctrl-Alt-G to exit grab";
 158         }
 159     }
 160
 161     if (qemu_name) {
 162         snprintf(win_title, sizeof(win_title), "QEMU (%s-%d)%s", qemu_name,
 163                  scon->idx, status);
 164         snprintf(icon_title, sizeof(icon_title), "QEMU (%s)", qemu_name);
 165     } else {
 166         snprintf(win_title, sizeof(win_title), "QEMU%s", status);
 167         snprintf(icon_title, sizeof(icon_title), "QEMU");
 168     }
 169
 170     if (scon->real_window) {
 171         SDL_SetWindowTitle(scon->real_window, win_title);
 172     }
 173 }
 174
 175 static void sdl_hide_cursor(struct sdl2_console *scon)
 176 {
 177     if (scon->opts->has_show_cursor && scon->opts->show_cursor) {
 178         return;
 179     }
 180
 181     SDL_ShowCursor(SDL_DISABLE);
 182     SDL_SetCursor(sdl_cursor_hidden);
 183
 184     if (!qemu_input_is_absolute()) {
 185         SDL_SetRelativeMouseMode(SDL_TRUE);
 186     }
 187 }
 188
 189 static void sdl_show_cursor(struct sdl2_console *scon)
 190 {
 191     if (scon->opts->has_show_cursor && scon->opts->show_cursor) {
 192         return;
 193     }
 194
 195     if (!qemu_input_is_absolute()) {
 196         SDL_SetRelativeMouseMode(SDL_FALSE);
 197     }
 198
 199     if (guest_cursor &&
 200         (gui_grab || qemu_input_is_absolute() || absolute_enabled)) {
 201         SDL_SetCursor(guest_sprite);
 202     } else {
 203         SDL_SetCursor(sdl_cursor_normal);
 204     }
 205
 206     SDL_ShowCursor(SDL_ENABLE);
 207 }
 208
 209 static void sdl_grab_start(struct sdl2_console *scon)
 210 {
 211     QemuConsole *con = scon ? scon->dcl.con : NULL;
 212
 213     if (!con || !qemu_console_is_graphic(con)) {
 214         return;
 215     }
 216     /*
 217      * If the application is not active, do not try to enter grab state. This
 218      * prevents 'SDL_WM_GrabInput(SDL_GRAB_ON)' from blocking all the
 219      * application (SDL bug).
 220      */
 221     if (!(SDL_GetWindowFlags(scon->real_window) & SDL_WINDOW_INPUT_FOCUS)) {
 222         return;
 223     }
 224     if (guest_cursor) {
 225         SDL_SetCursor(guest_sprite);
 226         if (!qemu_input_is_absolute() && !absolute_enabled) {
 227             SDL_WarpMouseInWindow(scon->real_window, guest_x, guest_y);
 228         }
 229     } else {
 230         sdl_hide_cursor(scon);
 231     }
 232     SDL_SetWindowGrab(scon->real_window, SDL_TRUE);
 233     gui_grab = 1;
 234     win32_kbd_set_grab(true);
 235     sdl_update_caption(scon);
 236 }
 237
 238 static void sdl_grab_end(struct sdl2_console *scon)
 239 {
 240     SDL_SetWindowGrab(scon->real_window, SDL_FALSE);
 241     gui_grab = 0;
 242     win32_kbd_set_grab(false);
 243     sdl_show_cursor(scon);
 244     sdl_update_caption(scon);
 245 }
 246
 247 static void absolute_mouse_grab(struct sdl2_console *scon)
 248 {
 249     int mouse_x, mouse_y;
 250     int scr_w, scr_h;
 251     SDL_GetMouseState(&mouse_x, &mouse_y);
 252     SDL_GetWindowSize(scon->real_window, &scr_w, &scr_h);
 253     if (mouse_x > 0 && mouse_x < scr_w - 1 &&
 254         mouse_y > 0 && mouse_y < scr_h - 1) {
 255         sdl_grab_start(scon);
 256     }
 257 }
 258
 259 static void sdl_mouse_mode_change(Notifier *notify, void *data)
 260 {
 261     if (qemu_input_is_absolute()) {
 262         if (!absolute_enabled) {
 263             absolute_enabled = 1;
 264             SDL_SetRelativeMouseMode(SDL_FALSE);
 265             absolute_mouse_grab(&sdl2_console[0]);
 266         }
 267     } else if (absolute_enabled) {
 268         if (!gui_fullscreen) {
 269             sdl_grab_end(&sdl2_console[0]);
 270         }
 271         absolute_enabled = 0;
 272     }
 273 }
 274
 275 static void sdl_send_mouse_event(struct sdl2_console *scon, int dx, int dy,
 276                                  int x, int y, int state)
 277 {
 278     static uint32_t bmap[INPUT_BUTTON__MAX] = {
 279         [INPUT_BUTTON_LEFT]       = SDL_BUTTON(SDL_BUTTON_LEFT),
 280         [INPUT_BUTTON_MIDDLE]     = SDL_BUTTON(SDL_BUTTON_MIDDLE),
 281         [INPUT_BUTTON_RIGHT]      = SDL_BUTTON(SDL_BUTTON_RIGHT),
 282         [INPUT_BUTTON_SIDE]       = SDL_BUTTON(SDL_BUTTON_X1),
 283         [INPUT_BUTTON_EXTRA]      = SDL_BUTTON(SDL_BUTTON_X2)
 284     };
 285     static uint32_t prev_state;
 286
 287     if (prev_state != state) {
 288         qemu_input_update_buttons(scon->dcl.con, bmap, prev_state, state);
 289         prev_state = state;
 290     }
 291
 292     if (qemu_input_is_absolute()) {
 293         qemu_input_queue_abs(scon->dcl.con, INPUT_AXIS_X,
 294                              x, 0, surface_width(scon->surface));
 295         qemu_input_queue_abs(scon->dcl.con, INPUT_AXIS_Y,
 296                              y, 0, surface_height(scon->surface));
 297     } else {
 298         if (guest_cursor) {
 299             x -= guest_x;
 300             y -= guest_y;
 301             guest_x += x;
 302             guest_y += y;
 303             dx = x;
 304             dy = y;
 305         }
 306         qemu_input_queue_rel(scon->dcl.con, INPUT_AXIS_X, dx);
 307         qemu_input_queue_rel(scon->dcl.con, INPUT_AXIS_Y, dy);
 308     }
 309     qemu_input_event_sync();
 310 }
 311
 312 static void toggle_full_screen(struct sdl2_console *scon)
 313 {
 314     gui_fullscreen = !gui_fullscreen;
 315     if (gui_fullscreen) {
 316         SDL_SetWindowFullscreen(scon->real_window,
 317                                 SDL_WINDOW_FULLSCREEN_DESKTOP);
 318         gui_saved_grab = gui_grab;
 319         sdl_grab_start(scon);
 320     } else {
 321         if (!gui_saved_grab) {
 322             sdl_grab_end(scon);
 323         }
 324         SDL_SetWindowFullscreen(scon->real_window, 0);
 325     }
 326     sdl2_redraw(scon);
 327 }
 328
 329 static int get_mod_state(void)
 330 {
 331     SDL_Keymod mod = SDL_GetModState();
 332
 333     if (alt_grab) {
 334         return (mod & (gui_grab_code | KMOD_LSHIFT)) ==
 335             (gui_grab_code | KMOD_LSHIFT);
 336     } else if (ctrl_grab) {
 337         return (mod & KMOD_RCTRL) == KMOD_RCTRL;
 338     } else {
 339         return (mod & gui_grab_code) == gui_grab_code;
 340     }
 341 }
 342
 343 static void *sdl2_win32_get_hwnd(struct sdl2_console *scon)
 344 {
 345 #ifdef CONFIG_WIN32
 346     SDL_SysWMinfo info;
 347
 348     SDL_VERSION(&info.version);
 349     if (SDL_GetWindowWMInfo(scon->real_window, &info)) {
 350         return info.info.win.window;
 351     }
 352 #endif
 353     return NULL;
 354 }
 355
 356 static void handle_keydown(SDL_Event *ev)
 357 {
 358     int win;
 359     struct sdl2_console *scon = get_scon_from_window(ev->key.windowID);
 360     int gui_key_modifier_pressed = get_mod_state();
 361     int gui_keysym = 0;
 362
 363     if (!scon) {
 364         return;
 365     }
 366
 367     if (!scon->ignore_hotkeys && gui_key_modifier_pressed && !ev->key.repeat) {
 368         switch (ev->key.keysym.scancode) {
 369         case SDL_SCANCODE_2:
 370         case SDL_SCANCODE_3:
 371         case SDL_SCANCODE_4:
 372         case SDL_SCANCODE_5:
 373         case SDL_SCANCODE_6:
 374         case SDL_SCANCODE_7:
 375         case SDL_SCANCODE_8:
 376         case SDL_SCANCODE_9:
 377             if (gui_grab) {
 378                 sdl_grab_end(scon);
 379             }
 380
 381             win = ev->key.keysym.scancode - SDL_SCANCODE_1;
 382             if (win < sdl2_num_outputs) {
 383                 sdl2_console[win].hidden = !sdl2_console[win].hidden;
 384                 if (sdl2_console[win].real_window) {
 385                     if (sdl2_console[win].hidden) {
 386                         SDL_HideWindow(sdl2_console[win].real_window);
 387                     } else {
 388                         SDL_ShowWindow(sdl2_console[win].real_window);
 389                     }
 390                 }
 391                 gui_keysym = 1;
 392             }
 393             break;
 394         case SDL_SCANCODE_F:
 395             toggle_full_screen(scon);
 396             gui_keysym = 1;
 397             break;
 398         case SDL_SCANCODE_G:
 399             gui_keysym = 1;
 400             if (!gui_grab) {
 401                 sdl_grab_start(scon);
 402             } else if (!gui_fullscreen) {
 403                 sdl_grab_end(scon);
 404             }
 405             break;
 406         case SDL_SCANCODE_U:
 407             sdl2_window_resize(scon);
 408             if (!scon->opengl) {
 409                 /* re-create scon->texture */
 410                 sdl2_2d_switch(&scon->dcl, scon->surface);
 411             }
 412             gui_keysym = 1;
 413             break;
 414 #if 0
 415         case SDL_SCANCODE_KP_PLUS:
 416         case SDL_SCANCODE_KP_MINUS:
 417             if (!gui_fullscreen) {
 418                 int scr_w, scr_h;
 419                 int width, height;
 420                 SDL_GetWindowSize(scon->real_window, &scr_w, &scr_h);
 421
 422                 width = MAX(scr_w + (ev->key.keysym.scancode ==
 423                                      SDL_SCANCODE_KP_PLUS ? 50 : -50),
 424                             160);
 425                 height = (surface_height(scon->surface) * width) /
 426                     surface_width(scon->surface);
 427                 fprintf(stderr, "%s: scale to %dx%d\n",
 428                         __func__, width, height);
 429                 sdl_scale(scon, width, height);
 430                 sdl2_redraw(scon);
 431                 gui_keysym = 1;
 432             }
 433 #endif
 434         default:
 435             break;
 436         }
 437     }
 438     if (!gui_keysym) {
 439         sdl2_process_key(scon, &ev->key);
 440     }
 441 }
 442
 443 static void handle_keyup(SDL_Event *ev)
 444 {
 445     struct sdl2_console *scon = get_scon_from_window(ev->key.windowID);
 446
 447     if (!scon) {
 448         return;
 449     }
 450
 451     scon->ignore_hotkeys = false;
 452     sdl2_process_key(scon, &ev->key);
 453 }
 454
 455 static void handle_textinput(SDL_Event *ev)
 456 {
 457     struct sdl2_console *scon = get_scon_from_window(ev->text.windowID);
 458     QemuConsole *con = scon ? scon->dcl.con : NULL;
 459
 460     if (!con) {
 461         return;
 462     }
 463
 464     if (qemu_console_is_graphic(con)) {
 465         return;
 466     }
 467     kbd_put_string_console(con, ev->text.text, strlen(ev->text.text));
 468 }
 469
 470 static void handle_mousemotion(SDL_Event *ev)
 471 {
 472     int max_x, max_y;
 473     struct sdl2_console *scon = get_scon_from_window(ev->motion.windowID);
 474
 475     if (!scon || !qemu_console_is_graphic(scon->dcl.con)) {
 476         return;
 477     }
 478
 479     if (qemu_input_is_absolute() || absolute_enabled) {
 480         int scr_w, scr_h;
 481         SDL_GetWindowSize(scon->real_window, &scr_w, &scr_h);
 482         max_x = scr_w - 1;
 483         max_y = scr_h - 1;
 484         if (gui_grab && !gui_fullscreen
 485             && (ev->motion.x == 0 || ev->motion.y == 0 ||
 486                 ev->motion.x == max_x || ev->motion.y == max_y)) {
 487             sdl_grab_end(scon);
 488         }
 489         if (!gui_grab &&
 490             (ev->motion.x > 0 && ev->motion.x < max_x &&
 491              ev->motion.y > 0 && ev->motion.y < max_y)) {
 492             sdl_grab_start(scon);
 493         }
 494     }
 495     if (gui_grab || qemu_input_is_absolute() || absolute_enabled) {
 496         sdl_send_mouse_event(scon, ev->motion.xrel, ev->motion.yrel,
 497                              ev->motion.x, ev->motion.y, ev->motion.state);
 498     }
 499 }
 500
 501 static void handle_mousebutton(SDL_Event *ev)
 502 {
 503     int buttonstate = SDL_GetMouseState(NULL, NULL);
 504     SDL_MouseButtonEvent *bev;
 505     struct sdl2_console *scon = get_scon_from_window(ev->button.windowID);
 506
 507     if (!scon || !qemu_console_is_graphic(scon->dcl.con)) {
 508         return;
 509     }
 510
 511     bev = &ev->button;
 512     if (!gui_grab && !qemu_input_is_absolute()) {
 513         if (ev->type == SDL_MOUSEBUTTONUP && bev->button == SDL_BUTTON_LEFT) {
 514             /* start grabbing all events */
 515             sdl_grab_start(scon);
 516         }
 517     } else {
 518         if (ev->type == SDL_MOUSEBUTTONDOWN) {
 519             buttonstate |= SDL_BUTTON(bev->button);
 520         } else {
 521             buttonstate &= ~SDL_BUTTON(bev->button);
 522         }
 523         sdl_send_mouse_event(scon, 0, 0, bev->x, bev->y, buttonstate);
 524     }
 525 }
 526
 527 static void handle_mousewheel(SDL_Event *ev)
 528 {
 529     struct sdl2_console *scon = get_scon_from_window(ev->wheel.windowID);
 530     SDL_MouseWheelEvent *wev = &ev->wheel;
 531     InputButton btn;
 532
 533     if (!scon || !qemu_console_is_graphic(scon->dcl.con)) {
 534         return;
 535     }
 536
 537     if (wev->y > 0) {
 538         btn = INPUT_BUTTON_WHEEL_UP;
 539     } else if (wev->y < 0) {
 540         btn = INPUT_BUTTON_WHEEL_DOWN;
 541     } else if (wev->x < 0) {
 542         btn = INPUT_BUTTON_WHEEL_RIGHT;
 543     } else if (wev->x > 0) {
 544         btn = INPUT_BUTTON_WHEEL_LEFT;
 545     } else {
 546         return;
 547     }
 548
 549     qemu_input_queue_btn(scon->dcl.con, btn, true);
 550     qemu_input_event_sync();
 551     qemu_input_queue_btn(scon->dcl.con, btn, false);
 552     qemu_input_event_sync();
 553 }
 554
 555 static void handle_windowevent(SDL_Event *ev)
 556 {
 557     struct sdl2_console *scon = get_scon_from_window(ev->window.windowID);
 558     bool allow_close = true;
 559
 560     if (!scon) {
 561         return;
 562     }
 563
 564     switch (ev->window.event) {
 565     case SDL_WINDOWEVENT_RESIZED:
 566         {
 567             QemuUIInfo info;
 568             memset(&info, 0, sizeof(info));
 569             info.width = ev->window.data1;
 570             info.height = ev->window.data2;
 571             dpy_set_ui_info(scon->dcl.con, &info, true);
 572         }
 573         sdl2_redraw(scon);
 574         break;
 575     case SDL_WINDOWEVENT_EXPOSED:
 576         sdl2_redraw(scon);
 577         break;
 578     case SDL_WINDOWEVENT_FOCUS_GAINED:
 579         win32_kbd_set_grab(gui_grab);
 580         if (qemu_console_is_graphic(scon->dcl.con)) {
 581             win32_kbd_set_window(sdl2_win32_get_hwnd(scon));
 582         }
 583         /* fall through */
 584     case SDL_WINDOWEVENT_ENTER:
 585         if (!gui_grab && (qemu_input_is_absolute() || absolute_enabled)) {
 586             absolute_mouse_grab(scon);
 587         }
 588         /* If a new console window opened using a hotkey receives the
 589          * focus, SDL sends another KEYDOWN event to the new window,
 590          * closing the console window immediately after.
 591          *
 592          * Work around this by ignoring further hotkey events until a
 593          * key is released.
 594          */
 595         scon->ignore_hotkeys = get_mod_state();
 596         break;
 597     case SDL_WINDOWEVENT_FOCUS_LOST:
 598         if (qemu_console_is_graphic(scon->dcl.con)) {
 599             win32_kbd_set_window(NULL);
 600         }
 601         if (gui_grab && !gui_fullscreen) {
 602             sdl_grab_end(scon);
 603         }
 604         break;
 605     case SDL_WINDOWEVENT_RESTORED:
 606         update_displaychangelistener(&scon->dcl, GUI_REFRESH_INTERVAL_DEFAULT);
 607         break;
 608     case SDL_WINDOWEVENT_MINIMIZED:
 609         update_displaychangelistener(&scon->dcl, 500);
 610         break;
 611     case SDL_WINDOWEVENT_CLOSE:
 612         if (qemu_console_is_graphic(scon->dcl.con)) {
 613             if (scon->opts->has_window_close && !scon->opts->window_close) {
 614                 allow_close = false;
 615             }
 616             if (allow_close) {
 617                 shutdown_action = SHUTDOWN_ACTION_POWEROFF;
 618                 qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_UI);
 619             }
 620         } else {
 621             SDL_HideWindow(scon->real_window);
 622             scon->hidden = true;
 623         }
 624         break;
 625     case SDL_WINDOWEVENT_SHOWN:
 626         scon->hidden = false;
 627         break;
 628     case SDL_WINDOWEVENT_HIDDEN:
 629         scon->hidden = true;
 630         break;
 631     }
 632 }
 633
 634 void sdl2_poll_events(struct sdl2_console *scon)
 635 {
 636     SDL_Event ev1, *ev = &ev1;
 637     bool allow_close = true;
 638     int idle = 1;
 639
 640     if (scon->last_vm_running != runstate_is_running()) {
 641         scon->last_vm_running = runstate_is_running();
 642         sdl_update_caption(scon);
 643     }
 644
 645     while (SDL_PollEvent(ev)) {
 646         switch (ev->type) {
 647         case SDL_KEYDOWN:
 648             idle = 0;
 649             handle_keydown(ev);
 650             break;
 651         case SDL_KEYUP:
 652             idle = 0;
 653             handle_keyup(ev);
 654             break;
 655         case SDL_TEXTINPUT:
 656             idle = 0;
 657             handle_textinput(ev);
 658             break;
 659         case SDL_QUIT:
 660             if (scon->opts->has_window_close && !scon->opts->window_close) {
 661                 allow_close = false;
 662             }
 663             if (allow_close) {
 664                 shutdown_action = SHUTDOWN_ACTION_POWEROFF;
 665                 qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_UI);
 666             }
 667             break;
 668         case SDL_MOUSEMOTION:
 669             idle = 0;
 670             handle_mousemotion(ev);
 671             break;
 672         case SDL_MOUSEBUTTONDOWN:
 673         case SDL_MOUSEBUTTONUP:
 674             idle = 0;
 675             handle_mousebutton(ev);
 676             break;
 677         case SDL_MOUSEWHEEL:
 678             idle = 0;
 679             handle_mousewheel(ev);
 680             break;
 681         case SDL_WINDOWEVENT:
 682             handle_windowevent(ev);
 683             break;
 684         default:
 685             break;
 686         }
 687     }
 688
 689     if (idle) {
 690         if (scon->idle_counter < SDL2_MAX_IDLE_COUNT) {
 691             scon->idle_counter++;
 692             if (scon->idle_counter >= SDL2_MAX_IDLE_COUNT) {
 693                 scon->dcl.update_interval = GUI_REFRESH_INTERVAL_DEFAULT;
 694             }
 695         }
 696     } else {
 697         scon->idle_counter = 0;
 698         scon->dcl.update_interval = SDL2_REFRESH_INTERVAL_BUSY;
 699     }
 700 }
 701
 702 static void sdl_mouse_warp(DisplayChangeListener *dcl,
 703                            int x, int y, int on)
 704 {
 705     struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
 706
 707     if (!qemu_console_is_graphic(scon->dcl.con)) {
 708         return;
 709     }
 710
 711     if (on) {
 712         if (!guest_cursor) {
 713             sdl_show_cursor(scon);
 714         }
 715         if (gui_grab || qemu_input_is_absolute() || absolute_enabled) {
 716             SDL_SetCursor(guest_sprite);
 717             if (!qemu_input_is_absolute() && !absolute_enabled) {
 718                 SDL_WarpMouseInWindow(scon->real_window, x, y);
 719             }
 720         }
 721     } else if (gui_grab) {
 722         sdl_hide_cursor(scon);
 723     }
 724     guest_cursor = on;
 725     guest_x = x, guest_y = y;
 726 }
 727
 728 static void sdl_mouse_define(DisplayChangeListener *dcl,
 729                              QEMUCursor *c)
 730 {
 731
 732     if (guest_sprite) {
 733         SDL_FreeCursor(guest_sprite);
 734     }
 735
 736     if (guest_sprite_surface) {
 737         SDL_FreeSurface(guest_sprite_surface);
 738     }
 739
 740     guest_sprite_surface =
 741         SDL_CreateRGBSurfaceFrom(c->data, c->width, c->height, 32, c->width * 4,
 742                                  0xff0000, 0x00ff00, 0xff, 0xff000000);
 743
 744     if (!guest_sprite_surface) {
 745         fprintf(stderr, "Failed to make rgb surface from %p\n", c);
 746         return;
 747     }
 748     guest_sprite = SDL_CreateColorCursor(guest_sprite_surface,
 749                                          c->hot_x, c->hot_y);
 750     if (!guest_sprite) {
 751         fprintf(stderr, "Failed to make color cursor from %p\n", c);
 752         return;
 753     }
 754     if (guest_cursor &&
 755         (gui_grab || qemu_input_is_absolute() || absolute_enabled)) {
 756         SDL_SetCursor(guest_sprite);
 757     }
 758 }
 759
 760 static void sdl_cleanup(void)
 761 {
 762     if (guest_sprite) {
 763         SDL_FreeCursor(guest_sprite);
 764     }
 765     SDL_QuitSubSystem(SDL_INIT_VIDEO);
 766 }
 767
 768 static const DisplayChangeListenerOps dcl_2d_ops = {
 769     .dpy_name             = "sdl2-2d",
 770     .dpy_gfx_update       = sdl2_2d_update,
 771     .dpy_gfx_switch       = sdl2_2d_switch,
 772     .dpy_gfx_check_format = sdl2_2d_check_format,
 773     .dpy_refresh          = sdl2_2d_refresh,
 774     .dpy_mouse_set        = sdl_mouse_warp,
 775     .dpy_cursor_define    = sdl_mouse_define,
 776 };
 777
 778 #ifdef CONFIG_OPENGL
 779 static const DisplayChangeListenerOps dcl_gl_ops = {
 780     .dpy_name                = "sdl2-gl",
 781     .dpy_gfx_update          = sdl2_gl_update,
 782     .dpy_gfx_switch          = sdl2_gl_switch,
 783     .dpy_gfx_check_format    = console_gl_check_format,
 784     .dpy_refresh             = sdl2_gl_refresh,
 785     .dpy_mouse_set           = sdl_mouse_warp,
 786     .dpy_cursor_define       = sdl_mouse_define,
 787
 788     .dpy_gl_scanout_disable  = sdl2_gl_scanout_disable,
 789     .dpy_gl_scanout_texture  = sdl2_gl_scanout_texture,
 790     .dpy_gl_update           = sdl2_gl_scanout_flush,
 791 };
 792
 793 static bool
 794 sdl2_gl_is_compatible_dcl(DisplayGLCtx *dgc,
 795                           DisplayChangeListener *dcl)
 796 {
 797     return dcl->ops == &dcl_gl_ops;
 798 }
 799
 800 static const DisplayGLCtxOps gl_ctx_ops = {
 801     .dpy_gl_ctx_is_compatible_dcl = sdl2_gl_is_compatible_dcl,
 802     .dpy_gl_ctx_create       = sdl2_gl_create_context,
 803     .dpy_gl_ctx_destroy      = sdl2_gl_destroy_context,
 804     .dpy_gl_ctx_make_current = sdl2_gl_make_context_current,
 805 };
 806 #endif
 807
 808 static void sdl2_display_early_init(DisplayOptions *o)
 809 {
 810     assert(o->type == DISPLAY_TYPE_SDL);
 811     if (o->has_gl && o->gl) {
 812 #ifdef CONFIG_OPENGL
 813         display_opengl = 1;
 814 #endif
 815     }
 816 }
 817
 818 static void sdl2_display_init(DisplayState *ds, DisplayOptions *o)
 819 {
 820     uint8_t data = 0;
 821     int i;
 822     SDL_SysWMinfo info;
 823     SDL_Surface *icon = NULL;
 824     char *dir;
 825
 826     assert(o->type == DISPLAY_TYPE_SDL);
 827
 828 #ifdef __linux__
 829     /* on Linux, SDL may use fbcon|directfb|svgalib when run without
 830      * accessible $DISPLAY to open X11 window.  This is often the case
 831      * when qemu is run using sudo.  But in this case, and when actually
 832      * run in X11 environment, SDL fights with X11 for the video card,
 833      * making current display unavailable, often until reboot.
 834      * So make x11 the default SDL video driver if this variable is unset.
 835      * This is a bit hackish but saves us from bigger problem.
 836      * Maybe it's a good idea to fix this in SDL instead.
 837      */
 838     if (!g_setenv("SDL_VIDEODRIVER", "x11", 0)) {
 839         fprintf(stderr, "Could not set SDL_VIDEODRIVER environment variable\n");
 840         exit(1);
 841     }
 842 #endif
 843
 844     if (SDL_Init(SDL_INIT_VIDEO)) {
 845         fprintf(stderr, "Could not initialize SDL(%s) - exiting\n",
 846                 SDL_GetError());
 847         exit(1);
 848     }
 849 #ifdef SDL_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR /* only available since SDL 2.0.8 */
 850     SDL_SetHint(SDL_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR, "0");
 851 #endif
 852     SDL_SetHint(SDL_HINT_GRAB_KEYBOARD, "1");
 853     memset(&info, 0, sizeof(info));
 854     SDL_VERSION(&info.version);
 855
 856     gui_fullscreen = o->has_full_screen && o->full_screen;
 857
 858     if (o->u.sdl.has_grab_mod) {
 859         if (o->u.sdl.grab_mod == HOT_KEY_MOD_LSHIFT_LCTRL_LALT) {
 860             alt_grab = true;
 861         } else if (o->u.sdl.grab_mod == HOT_KEY_MOD_RCTRL) {
 862             ctrl_grab = true;
 863         }
 864     }
 865
 866     for (i = 0;; i++) {
 867         QemuConsole *con = qemu_console_lookup_by_index(i);
 868         if (!con) {
 869             break;
 870         }
 871     }
 872     sdl2_num_outputs = i;
 873     if (sdl2_num_outputs == 0) {
 874         return;
 875     }
 876     sdl2_console = g_new0(struct sdl2_console, sdl2_num_outputs);
 877     for (i = 0; i < sdl2_num_outputs; i++) {
 878         QemuConsole *con = qemu_console_lookup_by_index(i);
 879         assert(con != NULL);
 880         if (!qemu_console_is_graphic(con) &&
 881             qemu_console_get_index(con) != 0) {
 882             sdl2_console[i].hidden = true;
 883         }
 884         sdl2_console[i].idx = i;
 885         sdl2_console[i].opts = o;
 886 #ifdef CONFIG_OPENGL
 887         sdl2_console[i].opengl = display_opengl;
 888         sdl2_console[i].dcl.ops = display_opengl ? &dcl_gl_ops : &dcl_2d_ops;
 889         sdl2_console[i].dgc.ops = display_opengl ? &gl_ctx_ops : NULL;
 890 #else
 891         sdl2_console[i].opengl = 0;
 892         sdl2_console[i].dcl.ops = &dcl_2d_ops;
 893 #endif
 894         sdl2_console[i].dcl.con = con;
 895         sdl2_console[i].kbd = qkbd_state_init(con);
 896         if (display_opengl) {
 897             qemu_console_set_display_gl_ctx(con, &sdl2_console[i].dgc);
 898         }
 899         register_displaychangelistener(&sdl2_console[i].dcl);
 900
 901 #if defined(SDL_VIDEO_DRIVER_WINDOWS) || defined(SDL_VIDEO_DRIVER_X11)
 902         if (SDL_GetWindowWMInfo(sdl2_console[i].real_window, &info)) {
 903 #if defined(SDL_VIDEO_DRIVER_WINDOWS)
 904             qemu_console_set_window_id(con, (uintptr_t)info.info.win.window);
 905 #elif defined(SDL_VIDEO_DRIVER_X11)
 906             qemu_console_set_window_id(con, info.info.x11.window);
 907 #endif
 908         }
 909 #endif
 910     }
 911
 912 #ifdef CONFIG_SDL_IMAGE
 913     dir = get_relocated_path(CONFIG_QEMU_ICONDIR "/hicolor/128x128/apps/qemu.png");
 914     icon = IMG_Load(dir);
 915 #else
 916     /* Load a 32x32x4 image. White pixels are transparent. */
 917     dir = get_relocated_path(CONFIG_QEMU_ICONDIR "/hicolor/32x32/apps/qemu.bmp");
 918     icon = SDL_LoadBMP(dir);
 919     if (icon) {
 920         uint32_t colorkey = SDL_MapRGB(icon->format, 255, 255, 255);
 921         SDL_SetColorKey(icon, SDL_TRUE, colorkey);
 922     }
 923 #endif
 924     g_free(dir);
 925     if (icon) {
 926         SDL_SetWindowIcon(sdl2_console[0].real_window, icon);
 927     }
 928
 929     mouse_mode_notifier.notify = sdl_mouse_mode_change;
 930     qemu_add_mouse_mode_change_notifier(&mouse_mode_notifier);
 931
 932     sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
 933     sdl_cursor_normal = SDL_GetCursor();
 934
 935     if (gui_fullscreen) {
 936         sdl_grab_start(&sdl2_console[0]);
 937     }
 938
 939     atexit(sdl_cleanup);
 940 }
 941
 942 static QemuDisplay qemu_display_sdl2 = {
 943     .type       = DISPLAY_TYPE_SDL,
 944     .early_init = sdl2_display_early_init,
 945     .init       = sdl2_display_init,
 946 };
 947
 948 static void register_sdl1(void)
 949 {
 950     qemu_display_register(&qemu_display_sdl2);
 951 }
 952
 953 type_init(register_sdl1);
 954
 955 #ifdef CONFIG_OPENGL
 956 module_dep("ui-opengl");
 957 #endif