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
  44 static int gui_saved_grab;
  45 static int gui_fullscreen;
  46 static int gui_grab_code = KMOD_LALT | KMOD_LCTRL;
  47 static SDL_Cursor *sdl_cursor_normal;
  48 static SDL_Cursor *sdl_cursor_hidden;
  49 static int absolute_enabled;
  50 static int guest_cursor;
  51 static int guest_x, guest_y;
  52 static SDL_Cursor *guest_sprite;
  53 static Notifier mouse_mode_notifier;
  54
  55 #define SDL2_REFRESH_INTERVAL_BUSY 10
  56 #define SDL2_MAX_IDLE_COUNT (2 * GUI_REFRESH_INTERVAL_DEFAULT \
  57                              / SDL2_REFRESH_INTERVAL_BUSY + 1)
  58
  59 static void sdl_update_caption(struct sdl2_console *scon);
  60
  61 static struct sdl2_console *get_scon_from_window(uint32_t window_id)
  62 {
  63     int i;
  64     for (i = 0; i < sdl2_num_outputs; i++) {
  65         if (sdl2_console[i].real_window == SDL_GetWindowFromID(window_id)) {
  66             return &sdl2_console[i];
  67         }
  68     }
  69     return NULL;
  70 }
  71
  72 void sdl2_window_create(struct sdl2_console *scon)
  73 {
  74     int flags = 0;
  75
  76     if (!scon->surface) {
  77         return;
  78     }
  79     assert(!scon->real_window);
  80
  81     if (gui_fullscreen) {
  82         flags |= SDL_WINDOW_FULLSCREEN_DESKTOP;
  83     } else {
  84         flags |= SDL_WINDOW_RESIZABLE;
  85     }
  86     if (scon->hidden) {
  87         flags |= SDL_WINDOW_HIDDEN;
  88     }
  89 #ifdef CONFIG_OPENGL
  90     if (scon->opengl) {
  91         flags |= SDL_WINDOW_OPENGL;
  92     }
  93 #endif
  94
  95     scon->real_window = SDL_CreateWindow("", SDL_WINDOWPOS_UNDEFINED,
  96                                          SDL_WINDOWPOS_UNDEFINED,
  97                                          surface_width(scon->surface),
  98                                          surface_height(scon->surface),
  99                                          flags);
 100     scon->real_renderer = SDL_CreateRenderer(scon->real_window, -1, 0);
 101     if (scon->opengl) {
 102         scon->winctx = SDL_GL_GetCurrentContext();
 103     }
 104     sdl_update_caption(scon);
 105 }
 106
 107 void sdl2_window_destroy(struct sdl2_console *scon)
 108 {
 109     if (!scon->real_window) {
 110         return;
 111     }
 112
 113     SDL_DestroyRenderer(scon->real_renderer);
 114     scon->real_renderer = NULL;
 115     SDL_DestroyWindow(scon->real_window);
 116     scon->real_window = NULL;
 117 }
 118
 119 void sdl2_window_resize(struct sdl2_console *scon)
 120 {
 121     if (!scon->real_window) {
 122         return;
 123     }
 124
 125     SDL_SetWindowSize(scon->real_window,
 126                       surface_width(scon->surface),
 127                       surface_height(scon->surface));
 128 }
 129
 130 static void sdl2_redraw(struct sdl2_console *scon)
 131 {
 132     if (scon->opengl) {
 133 #ifdef CONFIG_OPENGL
 134         sdl2_gl_redraw(scon);
 135 #endif
 136     } else {
 137         sdl2_2d_redraw(scon);
 138     }
 139 }
 140
 141 static void sdl_update_caption(struct sdl2_console *scon)
 142 {
 143     char win_title[1024];
 144     char icon_title[1024];
 145     const char *status = "";
 146
 147     if (!runstate_is_running()) {
 148         status = " [Stopped]";
 149     } else if (gui_grab) {
 150         if (alt_grab) {
 151             status = " - Press Ctrl-Alt-Shift-G to exit grab";
 152         } else if (ctrl_grab) {
 153             status = " - Press Right-Ctrl-G to exit grab";
 154         } else {
 155             status = " - Press Ctrl-Alt-G to exit grab";
 156         }
 157     }
 158
 159     if (qemu_name) {
 160         snprintf(win_title, sizeof(win_title), "QEMU (%s-%d)%s", qemu_name,
 161                  scon->idx, status);
 162         snprintf(icon_title, sizeof(icon_title), "QEMU (%s)", qemu_name);
 163     } else {
 164         snprintf(win_title, sizeof(win_title), "QEMU%s", status);
 165         snprintf(icon_title, sizeof(icon_title), "QEMU");
 166     }
 167
 168     if (scon->real_window) {
 169         SDL_SetWindowTitle(scon->real_window, win_title);
 170     }
 171 }
 172
 173 static void sdl_hide_cursor(struct sdl2_console *scon)
 174 {
 175     if (scon->opts->has_show_cursor && scon->opts->show_cursor) {
 176         return;
 177     }
 178
 179     SDL_ShowCursor(SDL_DISABLE);
 180     SDL_SetCursor(sdl_cursor_hidden);
 181
 182     if (!qemu_input_is_absolute()) {
 183         SDL_SetRelativeMouseMode(SDL_TRUE);
 184     }
 185 }
 186
 187 static void sdl_show_cursor(struct sdl2_console *scon)
 188 {
 189     if (scon->opts->has_show_cursor && scon->opts->show_cursor) {
 190         return;
 191     }
 192
 193     if (!qemu_input_is_absolute()) {
 194         SDL_SetRelativeMouseMode(SDL_FALSE);
 195     }
 196
 197     if (guest_cursor &&
 198         (gui_grab || qemu_input_is_absolute() || absolute_enabled)) {
 199         SDL_SetCursor(guest_sprite);
 200     } else {
 201         SDL_SetCursor(sdl_cursor_normal);
 202     }
 203
 204     SDL_ShowCursor(SDL_ENABLE);
 205 }
 206
 207 static void sdl_grab_start(struct sdl2_console *scon)
 208 {
 209     QemuConsole *con = scon ? scon->dcl.con : NULL;
 210
 211     if (!con || !qemu_console_is_graphic(con)) {
 212         return;
 213     }
 214     /*
 215      * If the application is not active, do not try to enter grab state. This
 216      * prevents 'SDL_WM_GrabInput(SDL_GRAB_ON)' from blocking all the
 217      * application (SDL bug).
 218      */
 219     if (!(SDL_GetWindowFlags(scon->real_window) & SDL_WINDOW_INPUT_FOCUS)) {
 220         return;
 221     }
 222     if (guest_cursor) {
 223         SDL_SetCursor(guest_sprite);
 224         if (!qemu_input_is_absolute() && !absolute_enabled) {
 225             SDL_WarpMouseInWindow(scon->real_window, guest_x, guest_y);
 226         }
 227     } else {
 228         sdl_hide_cursor(scon);
 229     }
 230     SDL_SetWindowGrab(scon->real_window, SDL_TRUE);
 231     gui_grab = 1;
 232     win32_kbd_set_grab(true);
 233     sdl_update_caption(scon);
 234 }
 235
 236 static void sdl_grab_end(struct sdl2_console *scon)
 237 {
 238     SDL_SetWindowGrab(scon->real_window, SDL_FALSE);
 239     gui_grab = 0;
 240     win32_kbd_set_grab(false);
 241     sdl_show_cursor(scon);
 242     sdl_update_caption(scon);
 243 }
 244
 245 static void absolute_mouse_grab(struct sdl2_console *scon)
 246 {
 247     int mouse_x, mouse_y;
 248     int scr_w, scr_h;
 249     SDL_GetMouseState(&mouse_x, &mouse_y);
 250     SDL_GetWindowSize(scon->real_window, &scr_w, &scr_h);
 251     if (mouse_x > 0 && mouse_x < scr_w - 1 &&
 252         mouse_y > 0 && mouse_y < scr_h - 1) {
 253         sdl_grab_start(scon);
 254     }
 255 }
 256
 257 static void sdl_mouse_mode_change(Notifier *notify, void *data)
 258 {
 259     if (qemu_input_is_absolute()) {
 260         if (!absolute_enabled) {
 261             absolute_enabled = 1;
 262             SDL_SetRelativeMouseMode(SDL_FALSE);
 263             absolute_mouse_grab(&sdl2_console[0]);
 264         }
 265     } else if (absolute_enabled) {
 266         if (!gui_fullscreen) {
 267             sdl_grab_end(&sdl2_console[0]);
 268         }
 269         absolute_enabled = 0;
 270     }
 271 }
 272
 273 static void sdl_send_mouse_event(struct sdl2_console *scon, int dx, int dy,
 274                                  int x, int y, int state)
 275 {
 276     static uint32_t bmap[INPUT_BUTTON__MAX] = {
 277         [INPUT_BUTTON_LEFT]       = SDL_BUTTON(SDL_BUTTON_LEFT),
 278         [INPUT_BUTTON_MIDDLE]     = SDL_BUTTON(SDL_BUTTON_MIDDLE),
 279         [INPUT_BUTTON_RIGHT]      = SDL_BUTTON(SDL_BUTTON_RIGHT),
 280         [INPUT_BUTTON_SIDE]       = SDL_BUTTON(SDL_BUTTON_X1),
 281         [INPUT_BUTTON_EXTRA]      = SDL_BUTTON(SDL_BUTTON_X2)
 282     };
 283     static uint32_t prev_state;
 284
 285     if (prev_state != state) {
 286         qemu_input_update_buttons(scon->dcl.con, bmap, prev_state, state);
 287         prev_state = state;
 288     }
 289
 290     if (qemu_input_is_absolute()) {
 291         qemu_input_queue_abs(scon->dcl.con, INPUT_AXIS_X,
 292                              x, 0, surface_width(scon->surface));
 293         qemu_input_queue_abs(scon->dcl.con, INPUT_AXIS_Y,
 294                              y, 0, surface_height(scon->surface));
 295     } else {
 296         if (guest_cursor) {
 297             x -= guest_x;
 298             y -= guest_y;
 299             guest_x += x;
 300             guest_y += y;
 301             dx = x;
 302             dy = y;
 303         }
 304         qemu_input_queue_rel(scon->dcl.con, INPUT_AXIS_X, dx);
 305         qemu_input_queue_rel(scon->dcl.con, INPUT_AXIS_Y, dy);
 306     }
 307     qemu_input_event_sync();
 308 }
 309
 310 static void toggle_full_screen(struct sdl2_console *scon)
 311 {
 312     gui_fullscreen = !gui_fullscreen;
 313     if (gui_fullscreen) {
 314         SDL_SetWindowFullscreen(scon->real_window,
 315                                 SDL_WINDOW_FULLSCREEN_DESKTOP);
 316         gui_saved_grab = gui_grab;
 317         sdl_grab_start(scon);
 318     } else {
 319         if (!gui_saved_grab) {
 320             sdl_grab_end(scon);
 321         }
 322         SDL_SetWindowFullscreen(scon->real_window, 0);
 323     }
 324     sdl2_redraw(scon);
 325 }
 326
 327 static int get_mod_state(void)
 328 {
 329     SDL_Keymod mod = SDL_GetModState();
 330
 331     if (alt_grab) {
 332         return (mod & (gui_grab_code | KMOD_LSHIFT)) ==
 333             (gui_grab_code | KMOD_LSHIFT);
 334     } else if (ctrl_grab) {
 335         return (mod & KMOD_RCTRL) == KMOD_RCTRL;
 336     } else {
 337         return (mod & gui_grab_code) == gui_grab_code;
 338     }
 339 }
 340
 341 static void *sdl2_win32_get_hwnd(struct sdl2_console *scon)
 342 {
 343 #ifdef CONFIG_WIN32
 344     SDL_SysWMinfo info;
 345
 346     SDL_VERSION(&info.version);
 347     if (SDL_GetWindowWMInfo(scon->real_window, &info)) {
 348         return info.info.win.window;
 349     }
 350 #endif
 351     return NULL;
 352 }
 353
 354 static void handle_keydown(SDL_Event *ev)
 355 {
 356     int win;
 357     struct sdl2_console *scon = get_scon_from_window(ev->key.windowID);
 358     int gui_key_modifier_pressed = get_mod_state();
 359     int gui_keysym = 0;
 360
 361     if (!scon) {
 362         return;
 363     }
 364
 365     if (!scon->ignore_hotkeys && gui_key_modifier_pressed && !ev->key.repeat) {
 366         switch (ev->key.keysym.scancode) {
 367         case SDL_SCANCODE_2:
 368         case SDL_SCANCODE_3:
 369         case SDL_SCANCODE_4:
 370         case SDL_SCANCODE_5:
 371         case SDL_SCANCODE_6:
 372         case SDL_SCANCODE_7:
 373         case SDL_SCANCODE_8:
 374         case SDL_SCANCODE_9:
 375             if (gui_grab) {
 376                 sdl_grab_end(scon);
 377             }
 378
 379             win = ev->key.keysym.scancode - SDL_SCANCODE_1;
 380             if (win < sdl2_num_outputs) {
 381                 sdl2_console[win].hidden = !sdl2_console[win].hidden;
 382                 if (sdl2_console[win].real_window) {
 383                     if (sdl2_console[win].hidden) {
 384                         SDL_HideWindow(sdl2_console[win].real_window);
 385                     } else {
 386                         SDL_ShowWindow(sdl2_console[win].real_window);
 387                     }
 388                 }
 389                 gui_keysym = 1;
 390             }
 391             break;
 392         case SDL_SCANCODE_F:
 393             toggle_full_screen(scon);
 394             gui_keysym = 1;
 395             break;
 396         case SDL_SCANCODE_G:
 397             gui_keysym = 1;
 398             if (!gui_grab) {
 399                 sdl_grab_start(scon);
 400             } else if (!gui_fullscreen) {
 401                 sdl_grab_end(scon);
 402             }
 403             break;
 404         case SDL_SCANCODE_U:
 405             sdl2_window_resize(scon);
 406             if (!scon->opengl) {
 407                 /* re-create scon->texture */
 408                 sdl2_2d_switch(&scon->dcl, scon->surface);
 409             }
 410             gui_keysym = 1;
 411             break;
 412 #if 0
 413         case SDL_SCANCODE_KP_PLUS:
 414         case SDL_SCANCODE_KP_MINUS:
 415             if (!gui_fullscreen) {
 416                 int scr_w, scr_h;
 417                 int width, height;
 418                 SDL_GetWindowSize(scon->real_window, &scr_w, &scr_h);
 419
 420                 width = MAX(scr_w + (ev->key.keysym.scancode ==
 421                                      SDL_SCANCODE_KP_PLUS ? 50 : -50),
 422                             160);
 423                 height = (surface_height(scon->surface) * width) /
 424                     surface_width(scon->surface);
 425                 fprintf(stderr, "%s: scale to %dx%d\n",
 426                         __func__, width, height);
 427                 sdl_scale(scon, width, height);
 428                 sdl2_redraw(scon);
 429                 gui_keysym = 1;
 430             }
 431 #endif
 432         default:
 433             break;
 434         }
 435     }
 436     if (!gui_keysym) {
 437         sdl2_process_key(scon, &ev->key);
 438     }
 439 }
 440
 441 static void handle_keyup(SDL_Event *ev)
 442 {
 443     struct sdl2_console *scon = get_scon_from_window(ev->key.windowID);
 444
 445     if (!scon) {
 446         return;
 447     }
 448
 449     scon->ignore_hotkeys = false;
 450     sdl2_process_key(scon, &ev->key);
 451 }
 452
 453 static void handle_textinput(SDL_Event *ev)
 454 {
 455     struct sdl2_console *scon = get_scon_from_window(ev->text.windowID);
 456     QemuConsole *con = scon ? scon->dcl.con : NULL;
 457
 458     if (!con) {
 459         return;
 460     }
 461
 462     if (qemu_console_is_graphic(con)) {
 463         return;
 464     }
 465     kbd_put_string_console(con, ev->text.text, strlen(ev->text.text));
 466 }
 467
 468 static void handle_mousemotion(SDL_Event *ev)
 469 {
 470     int max_x, max_y;
 471     struct sdl2_console *scon = get_scon_from_window(ev->motion.windowID);
 472
 473     if (!scon || !qemu_console_is_graphic(scon->dcl.con)) {
 474         return;
 475     }
 476
 477     if (qemu_input_is_absolute() || absolute_enabled) {
 478         int scr_w, scr_h;
 479         SDL_GetWindowSize(scon->real_window, &scr_w, &scr_h);
 480         max_x = scr_w - 1;
 481         max_y = scr_h - 1;
 482         if (gui_grab && !gui_fullscreen
 483             && (ev->motion.x == 0 || ev->motion.y == 0 ||
 484                 ev->motion.x == max_x || ev->motion.y == max_y)) {
 485             sdl_grab_end(scon);
 486         }
 487         if (!gui_grab &&
 488             (ev->motion.x > 0 && ev->motion.x < max_x &&
 489              ev->motion.y > 0 && ev->motion.y < max_y)) {
 490             sdl_grab_start(scon);
 491         }
 492     }
 493     if (gui_grab || qemu_input_is_absolute() || absolute_enabled) {
 494         sdl_send_mouse_event(scon, ev->motion.xrel, ev->motion.yrel,
 495                              ev->motion.x, ev->motion.y, ev->motion.state);
 496     }
 497 }
 498
 499 static void handle_mousebutton(SDL_Event *ev)
 500 {
 501     int buttonstate = SDL_GetMouseState(NULL, NULL);
 502     SDL_MouseButtonEvent *bev;
 503     struct sdl2_console *scon = get_scon_from_window(ev->button.windowID);
 504
 505     if (!scon || !qemu_console_is_graphic(scon->dcl.con)) {
 506         return;
 507     }
 508
 509     bev = &ev->button;
 510     if (!gui_grab && !qemu_input_is_absolute()) {
 511         if (ev->type == SDL_MOUSEBUTTONUP && bev->button == SDL_BUTTON_LEFT) {
 512             /* start grabbing all events */
 513             sdl_grab_start(scon);
 514         }
 515     } else {
 516         if (ev->type == SDL_MOUSEBUTTONDOWN) {
 517             buttonstate |= SDL_BUTTON(bev->button);
 518         } else {
 519             buttonstate &= ~SDL_BUTTON(bev->button);
 520         }
 521         sdl_send_mouse_event(scon, 0, 0, bev->x, bev->y, buttonstate);
 522     }
 523 }
 524
 525 static void handle_mousewheel(SDL_Event *ev)
 526 {
 527     struct sdl2_console *scon = get_scon_from_window(ev->wheel.windowID);
 528     SDL_MouseWheelEvent *wev = &ev->wheel;
 529     InputButton btn;
 530
 531     if (!scon || !qemu_console_is_graphic(scon->dcl.con)) {
 532         return;
 533     }
 534
 535     if (wev->y > 0) {
 536         btn = INPUT_BUTTON_WHEEL_UP;
 537     } else if (wev->y < 0) {
 538         btn = INPUT_BUTTON_WHEEL_DOWN;
 539     } else if (wev->x < 0) {
 540         btn = INPUT_BUTTON_WHEEL_RIGHT;
 541     } else if (wev->x > 0) {
 542         btn = INPUT_BUTTON_WHEEL_LEFT;
 543     } else {
 544         return;
 545     }
 546
 547     qemu_input_queue_btn(scon->dcl.con, btn, true);
 548     qemu_input_event_sync();
 549     qemu_input_queue_btn(scon->dcl.con, btn, false);
 550     qemu_input_event_sync();
 551 }
 552
 553 static void handle_windowevent(SDL_Event *ev)
 554 {
 555     struct sdl2_console *scon = get_scon_from_window(ev->window.windowID);
 556     bool allow_close = true;
 557
 558     if (!scon) {
 559         return;
 560     }
 561
 562     switch (ev->window.event) {
 563     case SDL_WINDOWEVENT_RESIZED:
 564         {
 565             QemuUIInfo info;
 566             memset(&info, 0, sizeof(info));
 567             info.width = ev->window.data1;
 568             info.height = ev->window.data2;
 569             dpy_set_ui_info(scon->dcl.con, &info, true);
 570         }
 571         sdl2_redraw(scon);
 572         break;
 573     case SDL_WINDOWEVENT_EXPOSED:
 574         sdl2_redraw(scon);
 575         break;
 576     case SDL_WINDOWEVENT_FOCUS_GAINED:
 577         win32_kbd_set_grab(gui_grab);
 578         if (qemu_console_is_graphic(scon->dcl.con)) {
 579             win32_kbd_set_window(sdl2_win32_get_hwnd(scon));
 580         }
 581         /* fall through */
 582     case SDL_WINDOWEVENT_ENTER:
 583         if (!gui_grab && (qemu_input_is_absolute() || absolute_enabled)) {
 584             absolute_mouse_grab(scon);
 585         }
 586         /* If a new console window opened using a hotkey receives the
 587          * focus, SDL sends another KEYDOWN event to the new window,
 588          * closing the console window immediately after.
 589          *
 590          * Work around this by ignoring further hotkey events until a
 591          * key is released.
 592          */
 593         scon->ignore_hotkeys = get_mod_state();
 594         break;
 595     case SDL_WINDOWEVENT_FOCUS_LOST:
 596         if (qemu_console_is_graphic(scon->dcl.con)) {
 597             win32_kbd_set_window(NULL);
 598         }
 599         if (gui_grab && !gui_fullscreen) {
 600             sdl_grab_end(scon);
 601         }
 602         break;
 603     case SDL_WINDOWEVENT_RESTORED:
 604         update_displaychangelistener(&scon->dcl, GUI_REFRESH_INTERVAL_DEFAULT);
 605         break;
 606     case SDL_WINDOWEVENT_MINIMIZED:
 607         update_displaychangelistener(&scon->dcl, 500);
 608         break;
 609     case SDL_WINDOWEVENT_CLOSE:
 610         if (qemu_console_is_graphic(scon->dcl.con)) {
 611             if (scon->opts->has_window_close && !scon->opts->window_close) {
 612                 allow_close = false;
 613             }
 614             if (allow_close) {
 615                 shutdown_action = SHUTDOWN_ACTION_POWEROFF;
 616                 qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_UI);
 617             }
 618         } else {
 619             SDL_HideWindow(scon->real_window);
 620             scon->hidden = true;
 621         }
 622         break;
 623     case SDL_WINDOWEVENT_SHOWN:
 624         scon->hidden = false;
 625         break;
 626     case SDL_WINDOWEVENT_HIDDEN:
 627         scon->hidden = true;
 628         break;
 629     }
 630 }
 631
 632 void sdl2_poll_events(struct sdl2_console *scon)
 633 {
 634     SDL_Event ev1, *ev = &ev1;
 635     bool allow_close = true;
 636     int idle = 1;
 637
 638     if (scon->last_vm_running != runstate_is_running()) {
 639         scon->last_vm_running = runstate_is_running();
 640         sdl_update_caption(scon);
 641     }
 642
 643     while (SDL_PollEvent(ev)) {
 644         switch (ev->type) {
 645         case SDL_KEYDOWN:
 646             idle = 0;
 647             handle_keydown(ev);
 648             break;
 649         case SDL_KEYUP:
 650             idle = 0;
 651             handle_keyup(ev);
 652             break;
 653         case SDL_TEXTINPUT:
 654             idle = 0;
 655             handle_textinput(ev);
 656             break;
 657         case SDL_QUIT:
 658             if (scon->opts->has_window_close && !scon->opts->window_close) {
 659                 allow_close = false;
 660             }
 661             if (allow_close) {
 662                 shutdown_action = SHUTDOWN_ACTION_POWEROFF;
 663                 qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_UI);
 664             }
 665             break;
 666         case SDL_MOUSEMOTION:
 667             idle = 0;
 668             handle_mousemotion(ev);
 669             break;
 670         case SDL_MOUSEBUTTONDOWN:
 671         case SDL_MOUSEBUTTONUP:
 672             idle = 0;
 673             handle_mousebutton(ev);
 674             break;
 675         case SDL_MOUSEWHEEL:
 676             idle = 0;
 677             handle_mousewheel(ev);
 678             break;
 679         case SDL_WINDOWEVENT:
 680             handle_windowevent(ev);
 681             break;
 682         default:
 683             break;
 684         }
 685     }
 686
 687     if (idle) {
 688         if (scon->idle_counter < SDL2_MAX_IDLE_COUNT) {
 689             scon->idle_counter++;
 690             if (scon->idle_counter >= SDL2_MAX_IDLE_COUNT) {
 691                 scon->dcl.update_interval = GUI_REFRESH_INTERVAL_DEFAULT;
 692             }
 693         }
 694     } else {
 695         scon->idle_counter = 0;
 696         scon->dcl.update_interval = SDL2_REFRESH_INTERVAL_BUSY;
 697     }
 698 }
 699
 700 static void sdl_mouse_warp(DisplayChangeListener *dcl,
 701                            int x, int y, int on)
 702 {
 703     struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
 704
 705     if (!qemu_console_is_graphic(scon->dcl.con)) {
 706         return;
 707     }
 708
 709     if (on) {
 710         if (!guest_cursor) {
 711             sdl_show_cursor(scon);
 712         }
 713         if (gui_grab || qemu_input_is_absolute() || absolute_enabled) {
 714             SDL_SetCursor(guest_sprite);
 715             if (!qemu_input_is_absolute() && !absolute_enabled) {
 716                 SDL_WarpMouseInWindow(scon->real_window, x, y);
 717             }
 718         }
 719     } else if (gui_grab) {
 720         sdl_hide_cursor(scon);
 721     }
 722     guest_cursor = on;
 723     guest_x = x, guest_y = y;
 724 }
 725
 726 static void sdl_mouse_define(DisplayChangeListener *dcl,
 727                              QEMUCursor *c)
 728 {
 729
 730     if (guest_sprite) {
 731         SDL_FreeCursor(guest_sprite);
 732     }
 733
 734     if (guest_sprite_surface) {
 735         SDL_FreeSurface(guest_sprite_surface);
 736     }
 737
 738     guest_sprite_surface =
 739         SDL_CreateRGBSurfaceFrom(c->data, c->width, c->height, 32, c->width * 4,
 740                                  0xff0000, 0x00ff00, 0xff, 0xff000000);
 741
 742     if (!guest_sprite_surface) {
 743         fprintf(stderr, "Failed to make rgb surface from %p\n", c);
 744         return;
 745     }
 746     guest_sprite = SDL_CreateColorCursor(guest_sprite_surface,
 747                                          c->hot_x, c->hot_y);
 748     if (!guest_sprite) {
 749         fprintf(stderr, "Failed to make color cursor from %p\n", c);
 750         return;
 751     }
 752     if (guest_cursor &&
 753         (gui_grab || qemu_input_is_absolute() || absolute_enabled)) {
 754         SDL_SetCursor(guest_sprite);
 755     }
 756 }
 757
 758 static void sdl_cleanup(void)
 759 {
 760     if (guest_sprite) {
 761         SDL_FreeCursor(guest_sprite);
 762     }
 763     SDL_QuitSubSystem(SDL_INIT_VIDEO);
 764 }
 765
 766 static const DisplayChangeListenerOps dcl_2d_ops = {
 767     .dpy_name             = "sdl2-2d",
 768     .dpy_gfx_update       = sdl2_2d_update,
 769     .dpy_gfx_switch       = sdl2_2d_switch,
 770     .dpy_gfx_check_format = sdl2_2d_check_format,
 771     .dpy_refresh          = sdl2_2d_refresh,
 772     .dpy_mouse_set        = sdl_mouse_warp,
 773     .dpy_cursor_define    = sdl_mouse_define,
 774 };
 775
 776 #ifdef CONFIG_OPENGL
 777 static const DisplayChangeListenerOps dcl_gl_ops = {
 778     .dpy_name                = "sdl2-gl",
 779     .dpy_gfx_update          = sdl2_gl_update,
 780     .dpy_gfx_switch          = sdl2_gl_switch,
 781     .dpy_gfx_check_format    = console_gl_check_format,
 782     .dpy_refresh             = sdl2_gl_refresh,
 783     .dpy_mouse_set           = sdl_mouse_warp,
 784     .dpy_cursor_define       = sdl_mouse_define,
 785
 786     .dpy_gl_scanout_disable  = sdl2_gl_scanout_disable,
 787     .dpy_gl_scanout_texture  = sdl2_gl_scanout_texture,
 788     .dpy_gl_update           = sdl2_gl_scanout_flush,
 789 };
 790
 791 static bool
 792 sdl2_gl_is_compatible_dcl(DisplayGLCtx *dgc,
 793                           DisplayChangeListener *dcl)
 794 {
 795     return dcl->ops == &dcl_gl_ops;
 796 }
 797
 798 static const DisplayGLCtxOps gl_ctx_ops = {
 799     .dpy_gl_ctx_is_compatible_dcl = sdl2_gl_is_compatible_dcl,
 800     .dpy_gl_ctx_create       = sdl2_gl_create_context,
 801     .dpy_gl_ctx_destroy      = sdl2_gl_destroy_context,
 802     .dpy_gl_ctx_make_current = sdl2_gl_make_context_current,
 803 };
 804 #endif
 805
 806 static void sdl2_display_early_init(DisplayOptions *o)
 807 {
 808     assert(o->type == DISPLAY_TYPE_SDL);
 809     if (o->has_gl && o->gl) {
 810 #ifdef CONFIG_OPENGL
 811         display_opengl = 1;
 812 #endif
 813     }
 814 }
 815
 816 static void sdl2_display_init(DisplayState *ds, DisplayOptions *o)
 817 {
 818     uint8_t data = 0;
 819     int i;
 820     SDL_SysWMinfo info;
 821     SDL_Surface *icon = NULL;
 822     char *dir;
 823
 824     assert(o->type == DISPLAY_TYPE_SDL);
 825
 826 #ifdef __linux__
 827     /* on Linux, SDL may use fbcon|directfb|svgalib when run without
 828      * accessible $DISPLAY to open X11 window.  This is often the case
 829      * when qemu is run using sudo.  But in this case, and when actually
 830      * run in X11 environment, SDL fights with X11 for the video card,
 831      * making current display unavailable, often until reboot.
 832      * So make x11 the default SDL video driver if this variable is unset.
 833      * This is a bit hackish but saves us from bigger problem.
 834      * Maybe it's a good idea to fix this in SDL instead.
 835      */
 836     if (!g_setenv("SDL_VIDEODRIVER", "x11", 0)) {
 837         fprintf(stderr, "Could not set SDL_VIDEODRIVER environment variable\n");
 838         exit(1);
 839     }
 840 #endif
 841
 842     if (SDL_Init(SDL_INIT_VIDEO)) {
 843         fprintf(stderr, "Could not initialize SDL(%s) - exiting\n",
 844                 SDL_GetError());
 845         exit(1);
 846     }
 847 #ifdef SDL_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR /* only available since SDL 2.0.8 */
 848     SDL_SetHint(SDL_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR, "0");
 849 #endif
 850     SDL_SetHint(SDL_HINT_GRAB_KEYBOARD, "1");
 851     memset(&info, 0, sizeof(info));
 852     SDL_VERSION(&info.version);
 853
 854     gui_fullscreen = o->has_full_screen && o->full_screen;
 855
 856     for (i = 0;; i++) {
 857         QemuConsole *con = qemu_console_lookup_by_index(i);
 858         if (!con) {
 859             break;
 860         }
 861     }
 862     sdl2_num_outputs = i;
 863     if (sdl2_num_outputs == 0) {
 864         return;
 865     }
 866     sdl2_console = g_new0(struct sdl2_console, sdl2_num_outputs);
 867     for (i = 0; i < sdl2_num_outputs; i++) {
 868         QemuConsole *con = qemu_console_lookup_by_index(i);
 869         assert(con != NULL);
 870         if (!qemu_console_is_graphic(con) &&
 871             qemu_console_get_index(con) != 0) {
 872             sdl2_console[i].hidden = true;
 873         }
 874         sdl2_console[i].idx = i;
 875         sdl2_console[i].opts = o;
 876 #ifdef CONFIG_OPENGL
 877         sdl2_console[i].opengl = display_opengl;
 878         sdl2_console[i].dcl.ops = display_opengl ? &dcl_gl_ops : &dcl_2d_ops;
 879         sdl2_console[i].dgc.ops = display_opengl ? &gl_ctx_ops : NULL;
 880 #else
 881         sdl2_console[i].opengl = 0;
 882         sdl2_console[i].dcl.ops = &dcl_2d_ops;
 883 #endif
 884         sdl2_console[i].dcl.con = con;
 885         sdl2_console[i].kbd = qkbd_state_init(con);
 886         if (display_opengl) {
 887             qemu_console_set_display_gl_ctx(con, &sdl2_console[i].dgc);
 888         }
 889         register_displaychangelistener(&sdl2_console[i].dcl);
 890
 891 #if defined(SDL_VIDEO_DRIVER_WINDOWS) || defined(SDL_VIDEO_DRIVER_X11)
 892         if (SDL_GetWindowWMInfo(sdl2_console[i].real_window, &info)) {
 893 #if defined(SDL_VIDEO_DRIVER_WINDOWS)
 894             qemu_console_set_window_id(con, (uintptr_t)info.info.win.window);
 895 #elif defined(SDL_VIDEO_DRIVER_X11)
 896             qemu_console_set_window_id(con, info.info.x11.window);
 897 #endif
 898         }
 899 #endif
 900     }
 901
 902 #ifdef CONFIG_SDL_IMAGE
 903     dir = get_relocated_path(CONFIG_QEMU_ICONDIR "/hicolor/128x128/apps/qemu.png");
 904     icon = IMG_Load(dir);
 905 #else
 906     /* Load a 32x32x4 image. White pixels are transparent. */
 907     dir = get_relocated_path(CONFIG_QEMU_ICONDIR "/hicolor/32x32/apps/qemu.bmp");
 908     icon = SDL_LoadBMP(dir);
 909     if (icon) {
 910         uint32_t colorkey = SDL_MapRGB(icon->format, 255, 255, 255);
 911         SDL_SetColorKey(icon, SDL_TRUE, colorkey);
 912     }
 913 #endif
 914     g_free(dir);
 915     if (icon) {
 916         SDL_SetWindowIcon(sdl2_console[0].real_window, icon);
 917     }
 918
 919     mouse_mode_notifier.notify = sdl_mouse_mode_change;
 920     qemu_add_mouse_mode_change_notifier(&mouse_mode_notifier);
 921
 922     sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
 923     sdl_cursor_normal = SDL_GetCursor();
 924
 925     if (gui_fullscreen) {
 926         sdl_grab_start(&sdl2_console[0]);
 927     }
 928
 929     atexit(sdl_cleanup);
 930 }
 931
 932 static QemuDisplay qemu_display_sdl2 = {
 933     .type       = DISPLAY_TYPE_SDL,
 934     .early_init = sdl2_display_early_init,
 935     .init       = sdl2_display_init,
 936 };
 937
 938 static void register_sdl1(void)
 939 {
 940     qemu_display_register(&qemu_display_sdl2);
 941 }
 942
 943 type_init(register_sdl1);
 944
 945 #ifdef CONFIG_OPENGL
 946 module_dep("ui-opengl");
 947 #endif