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