ui/sdl2.c

   1 /*
   2  * QEMU SDL display driver
   3  *
   4  * Copyright (c) 2003 Fabrice Bellard
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a copy
   7  * of this software and associated documentation files (the "Software"), to deal
   8  * in the Software without restriction, including without limitation the rights
   9  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  10  * copies of the Software, and to permit persons to whom the Software is
  11  * furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  22  * THE SOFTWARE.
  23  */
  24 /* Ported SDL 1.2 code to 2.0 by Dave Airlie. */
  25
  26 #include "qemu/osdep.h"
  27 #include "qemu/module.h"
  28 #include "qemu/cutils.h"
  29 #include "ui/console.h"
  30 #include "ui/input.h"
  31 #include "ui/sdl2.h"
  32 #include "sysemu/runstate.h"
  33 #include "sysemu/runstate-action.h"
  34 #include "sysemu/sysemu.h"
  35 #include "ui/win32-kbd-hook.h"
  36 #include "qemu/log.h"
  37
  38 static int sdl2_num_outputs;
  39 static struct sdl2_console *sdl2_console;
  40
  41 static SDL_Surface *guest_sprite_surface;
  42 static int gui_grab; /* if true, all keyboard/mouse events are grabbed */
  43 static bool alt_grab;
  44 static bool ctrl_grab;
  45
  46 static int gui_saved_grab;
  47 static int gui_fullscreen;
  48 static int gui_grab_code = KMOD_LALT | KMOD_LCTRL;
  49 static SDL_Cursor *sdl_cursor_normal;
  50 static SDL_Cursor *sdl_cursor_hidden;
  51 static int absolute_enabled;
  52 static int guest_cursor;
  53 static int guest_x, guest_y;
  54 static SDL_Cursor *guest_sprite;
  55 static Notifier mouse_mode_notifier;
  56
  57 #define SDL2_REFRESH_INTERVAL_BUSY 10
  58 #define SDL2_MAX_IDLE_COUNT (2 * GUI_REFRESH_INTERVAL_DEFAULT \
  59                              / SDL2_REFRESH_INTERVAL_BUSY + 1)
  60
  61 /* introduced in SDL 2.0.10 */
  62 #ifndef SDL_HINT_RENDER_BATCHING
  63 #define SDL_HINT_RENDER_BATCHING "SDL_RENDER_BATCHING"
  64 #endif
  65
  66 static void sdl_update_caption(struct sdl2_console *scon);
  67
  68 static struct sdl2_console *get_scon_from_window(uint32_t window_id)
  69 {
  70     int i;
  71     for (i = 0; i < sdl2_num_outputs; i++) {
  72         if (sdl2_console[i].real_window == SDL_GetWindowFromID(window_id)) {
  73             return &sdl2_console[i];
  74         }
  75     }
  76     return NULL;
  77 }
  78
  79 void sdl2_window_create(struct sdl2_console *scon)
  80 {
  81     int flags = 0;
  82
  83     if (!scon->surface) {
  84         return;
  85     }
  86     assert(!scon->real_window);
  87
  88     if (gui_fullscreen) {
  89         flags |= SDL_WINDOW_FULLSCREEN_DESKTOP;
  90     } else {
  91         flags |= SDL_WINDOW_RESIZABLE;
  92     }
  93     if (scon->hidden) {
  94         flags |= SDL_WINDOW_HIDDEN;
  95     }
  96 #ifdef CONFIG_OPENGL
  97     if (scon->opengl) {
  98         flags |= SDL_WINDOW_OPENGL;
  99     }
 100 #endif
 101
 102     scon->real_window = SDL_CreateWindow("", SDL_WINDOWPOS_UNDEFINED,
 103                                          SDL_WINDOWPOS_UNDEFINED,
 104                                          surface_width(scon->surface),
 105                                          surface_height(scon->surface),
 106                                          flags);
 107     if (scon->opengl) {
 108         const char *driver = "opengl";
 109
 110         if (scon->opts->gl == DISPLAYGL_MODE_ES) {
 111             driver = "opengles2";
 112         }
 113
 114         SDL_SetHint(SDL_HINT_RENDER_DRIVER, driver);
 115         SDL_SetHint(SDL_HINT_RENDER_BATCHING, "1");
 116
 117         scon->winctx = SDL_GL_CreateContext(scon->real_window);
 118     } else {
 119         /* The SDL renderer is only used by sdl2-2D, when OpenGL is disabled */
 120         scon->real_renderer = SDL_CreateRenderer(scon->real_window, -1, 0);
 121     }
 122     sdl_update_caption(scon);
 123 }
 124
 125 void sdl2_window_destroy(struct sdl2_console *scon)
 126 {
 127     if (!scon->real_window) {
 128         return;
 129     }
 130
 131     if (scon->winctx) {
 132         SDL_GL_DeleteContext(scon->winctx);
 133         scon->winctx = NULL;
 134     }
 135     if (scon->real_renderer) {
 136         SDL_DestroyRenderer(scon->real_renderer);
 137         scon->real_renderer = NULL;
 138     }
 139     SDL_DestroyWindow(scon->real_window);
 140     scon->real_window = NULL;
 141 }
 142
 143 void sdl2_window_resize(struct sdl2_console *scon)
 144 {
 145     if (!scon->real_window) {
 146         return;
 147     }
 148
 149     SDL_SetWindowSize(scon->real_window,
 150                       surface_width(scon->surface),
 151                       surface_height(scon->surface));
 152 }
 153
 154 static void sdl2_redraw(struct sdl2_console *scon)
 155 {
 156     if (scon->opengl) {
 157 #ifdef CONFIG_OPENGL
 158         sdl2_gl_redraw(scon);
 159 #endif
 160     } else {
 161         sdl2_2d_redraw(scon);
 162     }
 163 }
 164
 165 static void sdl_update_caption(struct sdl2_console *scon)
 166 {
 167     char win_title[1024];
 168     char icon_title[1024];
 169     const char *status = "";
 170
 171     if (!runstate_is_running()) {
 172         status = " [Stopped]";
 173     } else if (gui_grab) {
 174         if (alt_grab) {
 175 #ifdef CONFIG_DARWIN
 176             status = " - Press ⌃⌥⇧G to exit grab";
 177 #else
 178             status = " - Press Ctrl-Alt-Shift-G to exit grab";
 179 #endif
 180         } else if (ctrl_grab) {
 181             status = " - Press Right-Ctrl-G to exit grab";
 182         } else {
 183 #ifdef CONFIG_DARWIN
 184             status = " - Press ⌃⌥G to exit grab";
 185 #else
 186             status = " - Press Ctrl-Alt-G to exit grab";
 187 #endif
 188         }
 189     }
 190
 191     if (qemu_name) {
 192         snprintf(win_title, sizeof(win_title), "QEMU (%s-%d)%s", qemu_name,
 193                  scon->idx, status);
 194         snprintf(icon_title, sizeof(icon_title), "QEMU (%s)", qemu_name);
 195     } else {
 196         snprintf(win_title, sizeof(win_title), "QEMU%s", status);
 197         snprintf(icon_title, sizeof(icon_title), "QEMU");
 198     }
 199
 200     if (scon->real_window) {
 201         SDL_SetWindowTitle(scon->real_window, win_title);
 202     }
 203 }
 204
 205 static void sdl_hide_cursor(struct sdl2_console *scon)
 206 {
 207     if (scon->opts->has_show_cursor && scon->opts->show_cursor) {
 208         return;
 209     }
 210
 211     SDL_ShowCursor(SDL_DISABLE);
 212     SDL_SetCursor(sdl_cursor_hidden);
 213
 214     if (!qemu_input_is_absolute(scon->dcl.con)) {
 215         SDL_SetRelativeMouseMode(SDL_TRUE);
 216     }
 217 }
 218
 219 static void sdl_show_cursor(struct sdl2_console *scon)
 220 {
 221     if (scon->opts->has_show_cursor && scon->opts->show_cursor) {
 222         return;
 223     }
 224
 225     if (!qemu_input_is_absolute(scon->dcl.con)) {
 226         SDL_SetRelativeMouseMode(SDL_FALSE);
 227     }
 228
 229     if (guest_cursor &&
 230         (gui_grab || qemu_input_is_absolute(scon->dcl.con) || absolute_enabled)) {
 231         SDL_SetCursor(guest_sprite);
 232     } else {
 233         SDL_SetCursor(sdl_cursor_normal);
 234     }
 235
 236     SDL_ShowCursor(SDL_ENABLE);
 237 }
 238
 239 static void sdl_grab_start(struct sdl2_console *scon)
 240 {
 241     QemuConsole *con = scon ? scon->dcl.con : NULL;
 242
 243     if (!con || !qemu_console_is_graphic(con)) {
 244         return;
 245     }
 246     /*
 247      * If the application is not active, do not try to enter grab state. This
 248      * prevents 'SDL_WM_GrabInput(SDL_GRAB_ON)' from blocking all the
 249      * application (SDL bug).
 250      */
 251     if (!(SDL_GetWindowFlags(scon->real_window) & SDL_WINDOW_INPUT_FOCUS)) {
 252         return;
 253     }
 254     if (guest_cursor) {
 255         SDL_SetCursor(guest_sprite);
 256         if (!qemu_input_is_absolute(scon->dcl.con) && !absolute_enabled) {
 257             SDL_WarpMouseInWindow(scon->real_window, guest_x, guest_y);
 258         }
 259     } else {
 260         sdl_hide_cursor(scon);
 261     }
 262     SDL_SetWindowGrab(scon->real_window, SDL_TRUE);
 263     gui_grab = 1;
 264     win32_kbd_set_grab(true);
 265     sdl_update_caption(scon);
 266 }
 267
 268 static void sdl_grab_end(struct sdl2_console *scon)
 269 {
 270     SDL_SetWindowGrab(scon->real_window, SDL_FALSE);
 271     gui_grab = 0;
 272     win32_kbd_set_grab(false);
 273     sdl_show_cursor(scon);
 274     sdl_update_caption(scon);
 275 }
 276
 277 static void absolute_mouse_grab(struct sdl2_console *scon)
 278 {
 279     int mouse_x, mouse_y;
 280     int scr_w, scr_h;
 281     SDL_GetMouseState(&mouse_x, &mouse_y);
 282     SDL_GetWindowSize(scon->real_window, &scr_w, &scr_h);
 283     if (mouse_x > 0 && mouse_x < scr_w - 1 &&
 284         mouse_y > 0 && mouse_y < scr_h - 1) {
 285         sdl_grab_start(scon);
 286     }
 287 }
 288
 289 static void sdl_mouse_mode_change(Notifier *notify, void *data)
 290 {
 291     if (qemu_input_is_absolute(sdl2_console[0].dcl.con)) {
 292         if (!absolute_enabled) {
 293             absolute_enabled = 1;
 294             SDL_SetRelativeMouseMode(SDL_FALSE);
 295             absolute_mouse_grab(&sdl2_console[0]);
 296         }
 297     } else if (absolute_enabled) {
 298         if (!gui_fullscreen) {
 299             sdl_grab_end(&sdl2_console[0]);
 300         }
 301         absolute_enabled = 0;
 302     }
 303 }
 304
 305 static void sdl_send_mouse_event(struct sdl2_console *scon, int dx, int dy,
 306                                  int x, int y, int state)
 307 {
 308     static uint32_t bmap[INPUT_BUTTON__MAX] = {
 309         [INPUT_BUTTON_LEFT]       = SDL_BUTTON(SDL_BUTTON_LEFT),
 310         [INPUT_BUTTON_MIDDLE]     = SDL_BUTTON(SDL_BUTTON_MIDDLE),
 311         [INPUT_BUTTON_RIGHT]      = SDL_BUTTON(SDL_BUTTON_RIGHT),
 312         [INPUT_BUTTON_SIDE]       = SDL_BUTTON(SDL_BUTTON_X1),
 313         [INPUT_BUTTON_EXTRA]      = SDL_BUTTON(SDL_BUTTON_X2)
 314     };
 315     static uint32_t prev_state;
 316
 317     if (prev_state != state) {
 318         qemu_input_update_buttons(scon->dcl.con, bmap, prev_state, state);
 319         prev_state = state;
 320     }
 321
 322     if (qemu_input_is_absolute(scon->dcl.con)) {
 323         qemu_input_queue_abs(scon->dcl.con, INPUT_AXIS_X,
 324                              x, 0, surface_width(scon->surface));
 325         qemu_input_queue_abs(scon->dcl.con, INPUT_AXIS_Y,
 326                              y, 0, surface_height(scon->surface));
 327     } else {
 328         if (guest_cursor) {
 329             x -= guest_x;
 330             y -= guest_y;
 331             guest_x += x;
 332             guest_y += y;
 333             dx = x;
 334             dy = y;
 335         }
 336         qemu_input_queue_rel(scon->dcl.con, INPUT_AXIS_X, dx);
 337         qemu_input_queue_rel(scon->dcl.con, INPUT_AXIS_Y, dy);
 338     }
 339     qemu_input_event_sync();
 340 }
 341
 342 static void toggle_full_screen(struct sdl2_console *scon)
 343 {
 344     gui_fullscreen = !gui_fullscreen;
 345     if (gui_fullscreen) {
 346         SDL_SetWindowFullscreen(scon->real_window,
 347                                 SDL_WINDOW_FULLSCREEN_DESKTOP);
 348         gui_saved_grab = gui_grab;
 349         sdl_grab_start(scon);
 350     } else {
 351         if (!gui_saved_grab) {
 352             sdl_grab_end(scon);
 353         }
 354         SDL_SetWindowFullscreen(scon->real_window, 0);
 355     }
 356     sdl2_redraw(scon);
 357 }
 358
 359 static int get_mod_state(void)
 360 {
 361     SDL_Keymod mod = SDL_GetModState();
 362
 363     if (alt_grab) {
 364         return (mod & (gui_grab_code | KMOD_LSHIFT)) ==
 365             (gui_grab_code | KMOD_LSHIFT);
 366     } else if (ctrl_grab) {
 367         return (mod & KMOD_RCTRL) == KMOD_RCTRL;
 368     } else {
 369         return (mod & gui_grab_code) == gui_grab_code;
 370     }
 371 }
 372
 373 static void *sdl2_win32_get_hwnd(struct sdl2_console *scon)
 374 {
 375 #ifdef CONFIG_WIN32
 376     SDL_SysWMinfo info;
 377
 378     SDL_VERSION(&info.version);
 379     if (SDL_GetWindowWMInfo(scon->real_window, &info)) {
 380         return info.info.win.window;
 381     }
 382 #endif
 383     return NULL;
 384 }
 385
 386 static void handle_keydown(SDL_Event *ev)
 387 {
 388     int win;
 389     struct sdl2_console *scon = get_scon_from_window(ev->key.windowID);
 390     int gui_key_modifier_pressed = get_mod_state();
 391     int gui_keysym = 0;
 392
 393     if (!scon) {
 394         return;
 395     }
 396
 397     if (!scon->ignore_hotkeys && gui_key_modifier_pressed && !ev->key.repeat) {
 398         switch (ev->key.keysym.scancode) {
 399         case SDL_SCANCODE_2:
 400         case SDL_SCANCODE_3:
 401         case SDL_SCANCODE_4:
 402         case SDL_SCANCODE_5:
 403         case SDL_SCANCODE_6:
 404         case SDL_SCANCODE_7:
 405         case SDL_SCANCODE_8:
 406         case SDL_SCANCODE_9:
 407             if (gui_grab) {
 408                 sdl_grab_end(scon);
 409             }
 410
 411             win = ev->key.keysym.scancode - SDL_SCANCODE_1;
 412             if (win < sdl2_num_outputs) {
 413                 sdl2_console[win].hidden = !sdl2_console[win].hidden;
 414                 if (sdl2_console[win].real_window) {
 415                     if (sdl2_console[win].hidden) {
 416                         SDL_HideWindow(sdl2_console[win].real_window);
 417                     } else {
 418                         SDL_ShowWindow(sdl2_console[win].real_window);
 419                     }
 420                 }
 421                 gui_keysym = 1;
 422             }
 423             break;
 424         case SDL_SCANCODE_F:
 425             toggle_full_screen(scon);
 426             gui_keysym = 1;
 427             break;
 428         case SDL_SCANCODE_G:
 429             gui_keysym = 1;
 430             if (!gui_grab) {
 431                 sdl_grab_start(scon);
 432             } else if (!gui_fullscreen) {
 433                 sdl_grab_end(scon);
 434             }
 435             break;
 436         case SDL_SCANCODE_U:
 437             sdl2_window_resize(scon);
 438             if (!scon->opengl) {
 439                 /* re-create scon->texture */
 440                 sdl2_2d_switch(&scon->dcl, scon->surface);
 441             }
 442             gui_keysym = 1;
 443             break;
 444 #if 0
 445         case SDL_SCANCODE_KP_PLUS:
 446         case SDL_SCANCODE_KP_MINUS:
 447             if (!gui_fullscreen) {
 448                 int scr_w, scr_h;
 449                 int width, height;
 450                 SDL_GetWindowSize(scon->real_window, &scr_w, &scr_h);
 451
 452                 width = MAX(scr_w + (ev->key.keysym.scancode ==
 453                                      SDL_SCANCODE_KP_PLUS ? 50 : -50),
 454                             160);
 455                 height = (surface_height(scon->surface) * width) /
 456                     surface_width(scon->surface);
 457                 fprintf(stderr, "%s: scale to %dx%d\n",
 458                         __func__, width, height);
 459                 sdl_scale(scon, width, height);
 460                 sdl2_redraw(scon);
 461                 gui_keysym = 1;
 462             }
 463 #endif
 464         default:
 465             break;
 466         }
 467     }
 468     if (!gui_keysym) {
 469         sdl2_process_key(scon, &ev->key);
 470     }
 471 }
 472
 473 static void handle_keyup(SDL_Event *ev)
 474 {
 475     struct sdl2_console *scon = get_scon_from_window(ev->key.windowID);
 476
 477     if (!scon) {
 478         return;
 479     }
 480
 481     scon->ignore_hotkeys = false;
 482     sdl2_process_key(scon, &ev->key);
 483 }
 484
 485 static void handle_textinput(SDL_Event *ev)
 486 {
 487     struct sdl2_console *scon = get_scon_from_window(ev->text.windowID);
 488     QemuConsole *con = scon ? scon->dcl.con : NULL;
 489
 490     if (!con) {
 491         return;
 492     }
 493
 494     if (QEMU_IS_TEXT_CONSOLE(con)) {
 495         qemu_text_console_put_string(QEMU_TEXT_CONSOLE(con), ev->text.text, strlen(ev->text.text));
 496     }
 497 }
 498
 499 static void handle_mousemotion(SDL_Event *ev)
 500 {
 501     int max_x, max_y;
 502     struct sdl2_console *scon = get_scon_from_window(ev->motion.windowID);
 503
 504     if (!scon || !qemu_console_is_graphic(scon->dcl.con)) {
 505         return;
 506     }
 507
 508     if (qemu_input_is_absolute(scon->dcl.con) || absolute_enabled) {
 509         int scr_w, scr_h;
 510         SDL_GetWindowSize(scon->real_window, &scr_w, &scr_h);
 511         max_x = scr_w - 1;
 512         max_y = scr_h - 1;
 513         if (gui_grab && !gui_fullscreen
 514             && (ev->motion.x == 0 || ev->motion.y == 0 ||
 515                 ev->motion.x == max_x || ev->motion.y == max_y)) {
 516             sdl_grab_end(scon);
 517         }
 518         if (!gui_grab &&
 519             (ev->motion.x > 0 && ev->motion.x < max_x &&
 520              ev->motion.y > 0 && ev->motion.y < max_y)) {
 521             sdl_grab_start(scon);
 522         }
 523     }
 524     if (gui_grab || qemu_input_is_absolute(scon->dcl.con) || absolute_enabled) {
 525         sdl_send_mouse_event(scon, ev->motion.xrel, ev->motion.yrel,
 526                              ev->motion.x, ev->motion.y, ev->motion.state);
 527     }
 528 }
 529
 530 static void handle_mousebutton(SDL_Event *ev)
 531 {
 532     int buttonstate = SDL_GetMouseState(NULL, NULL);
 533     SDL_MouseButtonEvent *bev;
 534     struct sdl2_console *scon = get_scon_from_window(ev->button.windowID);
 535
 536     if (!scon || !qemu_console_is_graphic(scon->dcl.con)) {
 537         return;
 538     }
 539
 540     bev = &ev->button;
 541     if (!gui_grab && !qemu_input_is_absolute(scon->dcl.con)) {
 542         if (ev->type == SDL_MOUSEBUTTONUP && bev->button == SDL_BUTTON_LEFT) {
 543             /* start grabbing all events */
 544             sdl_grab_start(scon);
 545         }
 546     } else {
 547         if (ev->type == SDL_MOUSEBUTTONDOWN) {
 548             buttonstate |= SDL_BUTTON(bev->button);
 549         } else {
 550             buttonstate &= ~SDL_BUTTON(bev->button);
 551         }
 552         sdl_send_mouse_event(scon, 0, 0, bev->x, bev->y, buttonstate);
 553     }
 554 }
 555
 556 static void handle_mousewheel(SDL_Event *ev)
 557 {
 558     struct sdl2_console *scon = get_scon_from_window(ev->wheel.windowID);
 559     SDL_MouseWheelEvent *wev = &ev->wheel;
 560     InputButton btn;
 561
 562     if (!scon || !qemu_console_is_graphic(scon->dcl.con)) {
 563         return;
 564     }
 565
 566     if (wev->y > 0) {
 567         btn = INPUT_BUTTON_WHEEL_UP;
 568     } else if (wev->y < 0) {
 569         btn = INPUT_BUTTON_WHEEL_DOWN;
 570     } else if (wev->x < 0) {
 571         btn = INPUT_BUTTON_WHEEL_RIGHT;
 572     } else if (wev->x > 0) {
 573         btn = INPUT_BUTTON_WHEEL_LEFT;
 574     } else {
 575         return;
 576     }
 577
 578     qemu_input_queue_btn(scon->dcl.con, btn, true);
 579     qemu_input_event_sync();
 580     qemu_input_queue_btn(scon->dcl.con, btn, false);
 581     qemu_input_event_sync();
 582 }
 583
 584 static void handle_windowevent(SDL_Event *ev)
 585 {
 586     struct sdl2_console *scon = get_scon_from_window(ev->window.windowID);
 587     bool allow_close = true;
 588
 589     if (!scon) {
 590         return;
 591     }
 592
 593     switch (ev->window.event) {
 594     case SDL_WINDOWEVENT_RESIZED:
 595         {
 596             QemuUIInfo info;
 597             memset(&info, 0, sizeof(info));
 598             info.width = ev->window.data1;
 599             info.height = ev->window.data2;
 600             dpy_set_ui_info(scon->dcl.con, &info, true);
 601         }
 602         sdl2_redraw(scon);
 603         break;
 604     case SDL_WINDOWEVENT_EXPOSED:
 605         sdl2_redraw(scon);
 606         break;
 607     case SDL_WINDOWEVENT_FOCUS_GAINED:
 608         win32_kbd_set_grab(gui_grab);
 609         if (qemu_console_is_graphic(scon->dcl.con)) {
 610             win32_kbd_set_window(sdl2_win32_get_hwnd(scon));
 611         }
 612         /* fall through */
 613     case SDL_WINDOWEVENT_ENTER:
 614         if (!gui_grab && (qemu_input_is_absolute(scon->dcl.con) || absolute_enabled)) {
 615             absolute_mouse_grab(scon);
 616         }
 617         /* If a new console window opened using a hotkey receives the
 618          * focus, SDL sends another KEYDOWN event to the new window,
 619          * closing the console window immediately after.
 620          *
 621          * Work around this by ignoring further hotkey events until a
 622          * key is released.
 623          */
 624         scon->ignore_hotkeys = get_mod_state();
 625         break;
 626     case SDL_WINDOWEVENT_FOCUS_LOST:
 627         if (qemu_console_is_graphic(scon->dcl.con)) {
 628             win32_kbd_set_window(NULL);
 629         }
 630         if (gui_grab && !gui_fullscreen) {
 631             sdl_grab_end(scon);
 632         }
 633         break;
 634     case SDL_WINDOWEVENT_RESTORED:
 635         update_displaychangelistener(&scon->dcl, GUI_REFRESH_INTERVAL_DEFAULT);
 636         break;
 637     case SDL_WINDOWEVENT_MINIMIZED:
 638         update_displaychangelistener(&scon->dcl, 500);
 639         break;
 640     case SDL_WINDOWEVENT_CLOSE:
 641         if (qemu_console_is_graphic(scon->dcl.con)) {
 642             if (scon->opts->has_window_close && !scon->opts->window_close) {
 643                 allow_close = false;
 644             }
 645             if (allow_close) {
 646                 shutdown_action = SHUTDOWN_ACTION_POWEROFF;
 647                 qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_UI);
 648             }
 649         } else {
 650             SDL_HideWindow(scon->real_window);
 651             scon->hidden = true;
 652         }
 653         break;
 654     case SDL_WINDOWEVENT_SHOWN:
 655         scon->hidden = false;
 656         break;
 657     case SDL_WINDOWEVENT_HIDDEN:
 658         scon->hidden = true;
 659         break;
 660     }
 661 }
 662
 663 void sdl2_poll_events(struct sdl2_console *scon)
 664 {
 665     SDL_Event ev1, *ev = &ev1;
 666     bool allow_close = true;
 667     int idle = 1;
 668
 669     if (scon->last_vm_running != runstate_is_running()) {
 670         scon->last_vm_running = runstate_is_running();
 671         sdl_update_caption(scon);
 672     }
 673
 674     while (SDL_PollEvent(ev)) {
 675         switch (ev->type) {
 676         case SDL_KEYDOWN:
 677             idle = 0;
 678             handle_keydown(ev);
 679             break;
 680         case SDL_KEYUP:
 681             idle = 0;
 682             handle_keyup(ev);
 683             break;
 684         case SDL_TEXTINPUT:
 685             idle = 0;
 686             handle_textinput(ev);
 687             break;
 688         case SDL_QUIT:
 689             if (scon->opts->has_window_close && !scon->opts->window_close) {
 690                 allow_close = false;
 691             }
 692             if (allow_close) {
 693                 shutdown_action = SHUTDOWN_ACTION_POWEROFF;
 694                 qemu_system_shutdown_request(SHUTDOWN_CAUSE_HOST_UI);
 695             }
 696             break;
 697         case SDL_MOUSEMOTION:
 698             idle = 0;
 699             handle_mousemotion(ev);
 700             break;
 701         case SDL_MOUSEBUTTONDOWN:
 702         case SDL_MOUSEBUTTONUP:
 703             idle = 0;
 704             handle_mousebutton(ev);
 705             break;
 706         case SDL_MOUSEWHEEL:
 707             idle = 0;
 708             handle_mousewheel(ev);
 709             break;
 710         case SDL_WINDOWEVENT:
 711             handle_windowevent(ev);
 712             break;
 713         default:
 714             break;
 715         }
 716     }
 717
 718     if (idle) {
 719         if (scon->idle_counter < SDL2_MAX_IDLE_COUNT) {
 720             scon->idle_counter++;
 721             if (scon->idle_counter >= SDL2_MAX_IDLE_COUNT) {
 722                 scon->dcl.update_interval = GUI_REFRESH_INTERVAL_DEFAULT;
 723             }
 724         }
 725     } else {
 726         scon->idle_counter = 0;
 727         scon->dcl.update_interval = SDL2_REFRESH_INTERVAL_BUSY;
 728     }
 729 }
 730
 731 static void sdl_mouse_warp(DisplayChangeListener *dcl,
 732                            int x, int y, int on)
 733 {
 734     struct sdl2_console *scon = container_of(dcl, struct sdl2_console, dcl);
 735
 736     if (!qemu_console_is_graphic(scon->dcl.con)) {
 737         return;
 738     }
 739
 740     if (on) {
 741         if (!guest_cursor) {
 742             sdl_show_cursor(scon);
 743         }
 744         if (gui_grab || qemu_input_is_absolute(scon->dcl.con) || absolute_enabled) {
 745             SDL_SetCursor(guest_sprite);
 746             if (!qemu_input_is_absolute(scon->dcl.con) && !absolute_enabled) {
 747                 SDL_WarpMouseInWindow(scon->real_window, x, y);
 748             }
 749         }
 750     } else if (gui_grab) {
 751         sdl_hide_cursor(scon);
 752     }
 753     guest_cursor = on;
 754     guest_x = x, guest_y = y;
 755 }
 756
 757 static void sdl_mouse_define(DisplayChangeListener *dcl,
 758                              QEMUCursor *c)
 759 {
 760
 761     if (guest_sprite) {
 762         SDL_FreeCursor(guest_sprite);
 763     }
 764
 765     if (guest_sprite_surface) {
 766         SDL_FreeSurface(guest_sprite_surface);
 767     }
 768
 769     guest_sprite_surface =
 770         SDL_CreateRGBSurfaceFrom(c->data, c->width, c->height, 32, c->width * 4,
 771                                  0xff0000, 0x00ff00, 0xff, 0xff000000);
 772
 773     if (!guest_sprite_surface) {
 774         fprintf(stderr, "Failed to make rgb surface from %p\n", c);
 775         return;
 776     }
 777     guest_sprite = SDL_CreateColorCursor(guest_sprite_surface,
 778                                          c->hot_x, c->hot_y);
 779     if (!guest_sprite) {
 780         fprintf(stderr, "Failed to make color cursor from %p\n", c);
 781         return;
 782     }
 783     if (guest_cursor &&
 784         (gui_grab || qemu_input_is_absolute(dcl->con) || absolute_enabled)) {
 785         SDL_SetCursor(guest_sprite);
 786     }
 787 }
 788
 789 static void sdl_cleanup(void)
 790 {
 791     if (guest_sprite) {
 792         SDL_FreeCursor(guest_sprite);
 793     }
 794     SDL_QuitSubSystem(SDL_INIT_VIDEO);
 795 }
 796
 797 static const DisplayChangeListenerOps dcl_2d_ops = {
 798     .dpy_name             = "sdl2-2d",
 799     .dpy_gfx_update       = sdl2_2d_update,
 800     .dpy_gfx_switch       = sdl2_2d_switch,
 801     .dpy_gfx_check_format = sdl2_2d_check_format,
 802     .dpy_refresh          = sdl2_2d_refresh,
 803     .dpy_mouse_set        = sdl_mouse_warp,
 804     .dpy_cursor_define    = sdl_mouse_define,
 805 };
 806
 807 #ifdef CONFIG_OPENGL
 808 static const DisplayChangeListenerOps dcl_gl_ops = {
 809     .dpy_name                = "sdl2-gl",
 810     .dpy_gfx_update          = sdl2_gl_update,
 811     .dpy_gfx_switch          = sdl2_gl_switch,
 812     .dpy_gfx_check_format    = console_gl_check_format,
 813     .dpy_refresh             = sdl2_gl_refresh,
 814     .dpy_mouse_set           = sdl_mouse_warp,
 815     .dpy_cursor_define       = sdl_mouse_define,
 816
 817     .dpy_gl_scanout_disable  = sdl2_gl_scanout_disable,
 818     .dpy_gl_scanout_texture  = sdl2_gl_scanout_texture,
 819     .dpy_gl_update           = sdl2_gl_scanout_flush,
 820 };
 821
 822 static bool
 823 sdl2_gl_is_compatible_dcl(DisplayGLCtx *dgc,
 824                           DisplayChangeListener *dcl)
 825 {
 826     return dcl->ops == &dcl_gl_ops;
 827 }
 828
 829 static const DisplayGLCtxOps gl_ctx_ops = {
 830     .dpy_gl_ctx_is_compatible_dcl = sdl2_gl_is_compatible_dcl,
 831     .dpy_gl_ctx_create       = sdl2_gl_create_context,
 832     .dpy_gl_ctx_destroy      = sdl2_gl_destroy_context,
 833     .dpy_gl_ctx_make_current = sdl2_gl_make_context_current,
 834 };
 835 #endif
 836
 837 static void sdl2_display_early_init(DisplayOptions *o)
 838 {
 839     assert(o->type == DISPLAY_TYPE_SDL);
 840     if (o->has_gl && o->gl) {
 841 #ifdef CONFIG_OPENGL
 842         display_opengl = 1;
 843 #endif
 844     }
 845 }
 846
 847 static void sdl2_display_init(DisplayState *ds, DisplayOptions *o)
 848 {
 849     uint8_t data = 0;
 850     int i;
 851     SDL_SysWMinfo info;
 852     SDL_Surface *icon = NULL;
 853     char *dir;
 854
 855     assert(o->type == DISPLAY_TYPE_SDL);
 856
 857     if (SDL_GetHintBoolean("QEMU_ENABLE_SDL_LOGGING", SDL_FALSE)) {
 858         SDL_LogSetAllPriority(SDL_LOG_PRIORITY_VERBOSE);
 859     }
 860
 861     if (SDL_Init(SDL_INIT_VIDEO)) {
 862         fprintf(stderr, "Could not initialize SDL(%s) - exiting\n",
 863                 SDL_GetError());
 864         exit(1);
 865     }
 866 #ifdef SDL_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR /* only available since SDL 2.0.8 */
 867     SDL_SetHint(SDL_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR, "0");
 868 #endif
 869 #ifndef CONFIG_WIN32
 870     /* QEMU uses its own low level keyboard hook procedure on Windows */
 871     SDL_SetHint(SDL_HINT_GRAB_KEYBOARD, "1");
 872 #endif
 873 #ifdef SDL_HINT_ALLOW_ALT_TAB_WHILE_GRABBED
 874     SDL_SetHint(SDL_HINT_ALLOW_ALT_TAB_WHILE_GRABBED, "0");
 875 #endif
 876     SDL_SetHint(SDL_HINT_WINDOWS_NO_CLOSE_ON_ALT_F4, "1");
 877     SDL_EnableScreenSaver();
 878     memset(&info, 0, sizeof(info));
 879     SDL_VERSION(&info.version);
 880
 881     gui_fullscreen = o->has_full_screen && o->full_screen;
 882
 883     if (o->u.sdl.has_grab_mod) {
 884         if (o->u.sdl.grab_mod == HOT_KEY_MOD_LSHIFT_LCTRL_LALT) {
 885             alt_grab = true;
 886         } else if (o->u.sdl.grab_mod == HOT_KEY_MOD_RCTRL) {
 887             ctrl_grab = true;
 888         }
 889     }
 890
 891     for (i = 0;; i++) {
 892         QemuConsole *con = qemu_console_lookup_by_index(i);
 893         if (!con) {
 894             break;
 895         }
 896     }
 897     sdl2_num_outputs = i;
 898     if (sdl2_num_outputs == 0) {
 899         return;
 900     }
 901     sdl2_console = g_new0(struct sdl2_console, sdl2_num_outputs);
 902     for (i = 0; i < sdl2_num_outputs; i++) {
 903         QemuConsole *con = qemu_console_lookup_by_index(i);
 904         assert(con != NULL);
 905         if (!qemu_console_is_graphic(con) &&
 906             qemu_console_get_index(con) != 0) {
 907             sdl2_console[i].hidden = true;
 908         }
 909         sdl2_console[i].idx = i;
 910         sdl2_console[i].opts = o;
 911 #ifdef CONFIG_OPENGL
 912         sdl2_console[i].opengl = display_opengl;
 913         sdl2_console[i].dcl.ops = display_opengl ? &dcl_gl_ops : &dcl_2d_ops;
 914         sdl2_console[i].dgc.ops = display_opengl ? &gl_ctx_ops : NULL;
 915 #else
 916         sdl2_console[i].opengl = 0;
 917         sdl2_console[i].dcl.ops = &dcl_2d_ops;
 918 #endif
 919         sdl2_console[i].dcl.con = con;
 920         sdl2_console[i].kbd = qkbd_state_init(con);
 921         if (display_opengl) {
 922             qemu_console_set_display_gl_ctx(con, &sdl2_console[i].dgc);
 923         }
 924         register_displaychangelistener(&sdl2_console[i].dcl);
 925
 926 #if defined(SDL_VIDEO_DRIVER_WINDOWS) || defined(SDL_VIDEO_DRIVER_X11)
 927         if (SDL_GetWindowWMInfo(sdl2_console[i].real_window, &info)) {
 928 #if defined(SDL_VIDEO_DRIVER_WINDOWS)
 929             qemu_console_set_window_id(con, (uintptr_t)info.info.win.window);
 930 #elif defined(SDL_VIDEO_DRIVER_X11)
 931             qemu_console_set_window_id(con, info.info.x11.window);
 932 #endif
 933         }
 934 #endif
 935     }
 936
 937 #ifdef CONFIG_SDL_IMAGE
 938     dir = get_relocated_path(CONFIG_QEMU_ICONDIR "/hicolor/128x128/apps/qemu.png");
 939     icon = IMG_Load(dir);
 940 #else
 941     /* Load a 32x32x4 image. White pixels are transparent. */
 942     dir = get_relocated_path(CONFIG_QEMU_ICONDIR "/hicolor/32x32/apps/qemu.bmp");
 943     icon = SDL_LoadBMP(dir);
 944     if (icon) {
 945         uint32_t colorkey = SDL_MapRGB(icon->format, 255, 255, 255);
 946         SDL_SetColorKey(icon, SDL_TRUE, colorkey);
 947     }
 948 #endif
 949     g_free(dir);
 950     if (icon) {
 951         SDL_SetWindowIcon(sdl2_console[0].real_window, icon);
 952     }
 953
 954     mouse_mode_notifier.notify = sdl_mouse_mode_change;
 955     qemu_add_mouse_mode_change_notifier(&mouse_mode_notifier);
 956
 957     sdl_cursor_hidden = SDL_CreateCursor(&data, &data, 8, 1, 0, 0);
 958     sdl_cursor_normal = SDL_GetCursor();
 959
 960     if (gui_fullscreen) {
 961         sdl_grab_start(&sdl2_console[0]);
 962     }
 963
 964     atexit(sdl_cleanup);
 965 }
 966
 967 static QemuDisplay qemu_display_sdl2 = {
 968     .type       = DISPLAY_TYPE_SDL,
 969     .early_init = sdl2_display_early_init,
 970     .init       = sdl2_display_init,
 971 };
 972
 973 static void register_sdl1(void)
 974 {
 975     qemu_display_register(&qemu_display_sdl2);
 976 }
 977
 978 type_init(register_sdl1);
 979
 980 #ifdef CONFIG_OPENGL
 981 module_dep("ui-opengl");
 982 #endif