text: //========================================================================
  // GLFW 3.4 Wayland - www.glfw.org
  //------------------------------------------------------------------------
  // Copyright (c) 2014 Jonas Ådahl <jadahl@gmail.com>
  //
  // This software is provided 'as-is', without any express or implied
  // warranty. In no event will the authors be held liable for any damages
  // arising from the use of this software.
  //
  // Permission is granted to anyone to use this software for any purpose,
  // including commercial applications, and to alter it and redistribute it
  // freely, subject to the following restrictions:
  //
  // 1. The origin of this software must not be misrepresented; you must not
  //    claim that you wrote the original software. If you use this software
  //    in a product, an acknowledgment in the product documentation would
  //    be appreciated but is not required.
  //
  // 2. Altered source versions must be plainly marked as such, and must not
  //    be misrepresented as being the original software.
  //
  // 3. This notice may not be removed or altered from any source
  //    distribution.
  //
  //========================================================================
  // It is fine to use C99 in this file because it will not be built with VS
  //========================================================================
  
  #include "internal.h"
  
  #include <assert.h>
  #include <errno.h>
  #include <limits.h>
  #include <linux/input.h>
  #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  #include <sys/mman.h>
  #include <sys/timerfd.h>
  #include <unistd.h>
  #include <wayland-client.h>
  
  
  static inline int min(int n1, int n2)
  {
      return n1 < n2 ? n1 : n2;
  }
  
  static _GLFWwindow* findWindowFromDecorationSurface(struct wl_surface* surface,
                                                      int* which)
  {
      int focus;
      _GLFWwindow* window = _glfw.windowListHead;
      if (!which)
          which = &focus;
      while (window)
      {
          if (surface == window->wl.decorations.top.surface)
          {
              *which = topDecoration;
              break;
          }
          if (surface == window->wl.decorations.left.surface)
          {
              *which = leftDecoration;
              break;
          }
          if (surface == window->wl.decorations.right.surface)
          {
              *which = rightDecoration;
              break;
          }
          if (surface == window->wl.decorations.bottom.surface)
          {
              *which = bottomDecoration;
              break;
          }
          window = window->next;
      }
      return window;
  }
  
  static void pointerHandleEnter(void* data,
                                 struct wl_pointer* pointer,
                                 uint32_t serial,
                                 struct wl_surface* surface,
                                 wl_fixed_t sx,
                                 wl_fixed_t sy)
  {
      // Happens in the case we just destroyed the surface.
      if (!surface)
          return;
  
      int focus = 0;
      _GLFWwindow* window = wl_surface_get_user_data(surface);
      if (!window)
      {
          window = findWindowFromDecorationSurface(surface, &focus);
          if (!window)
              return;
      }
  
      window->wl.decorations.focus = focus;
      _glfw.wl.serial = serial;
      _glfw.wl.pointerFocus = window;
  
      window->wl.hovered = GLFW_TRUE;
  
      _glfwPlatformSetCursor(window, window->wl.currentCursor);
      _glfwInputCursorEnter(window, GLFW_TRUE);
  }
  
  static void pointerHandleLeave(void* data,
                                 struct wl_pointer* pointer,
                                 uint32_t serial,
                                 struct wl_surface* surface)
  {
      _GLFWwindow* window = _glfw.wl.pointerFocus;
  
      if (!window)
          return;
  
      window->wl.hovered = GLFW_FALSE;
  
      _glfw.wl.serial = serial;
      _glfw.wl.pointerFocus = NULL;
      _glfwInputCursorEnter(window, GLFW_FALSE);
  }
  
  static void setCursor(_GLFWwindow* window, const char* name)
  {
      struct wl_buffer* buffer;
      struct wl_cursor* cursor;
      struct wl_cursor_image* image;
      struct wl_surface* surface = _glfw.wl.cursorSurface;
      struct wl_cursor_theme* theme = _glfw.wl.cursorTheme;
      int scale = 1;
  
      if (window->wl.scale > 1 && _glfw.wl.cursorThemeHiDPI)
      {
          // We only support up to scale=2 for now, since libwayland-cursor
          // requires us to load a different theme for each size.
          scale = 2;
          theme = _glfw.wl.cursorThemeHiDPI;
      }
  
      cursor = wl_cursor_theme_get_cursor(theme, name);
      if (!cursor)
      {
          _glfwInputError(GLFW_PLATFORM_ERROR,
                          "Wayland: Standard cursor not found");
          return;
      }
      // TODO: handle animated cursors too.
      image = cursor->images[0];
  
      if (!image)
          return;
  
      buffer = wl_cursor_image_get_buffer(image);
      if (!buffer)
          return;
      wl_pointer_set_cursor(_glfw.wl.pointer, _glfw.wl.serial,
                            surface,
                            image->hotspot_x / scale,
                            image->hotspot_y / scale);
      wl_surface_set_buffer_scale(surface, scale);
      wl_surface_attach(surface, buffer, 0, 0);
      wl_surface_damage(surface, 0, 0,
                        image->width, image->height);
      wl_surface_commit(surface);
  }
  
  static void pointerHandleMotion(void* data,
                                  struct wl_pointer* pointer,
                                  uint32_t time,
                                  wl_fixed_t sx,
                                  wl_fixed_t sy)
  {
      _GLFWwindow* window = _glfw.wl.pointerFocus;
      const char* cursorName;
  
      if (!window)
          return;
  
      if (window->cursorMode == GLFW_CURSOR_DISABLED)
          return;
      else
      {
          window->wl.cursorPosX = wl_fixed_to_double(sx);
          window->wl.cursorPosY = wl_fixed_to_double(sy);
      }
  
      switch (window->wl.decorations.focus)
      {
          case mainWindow:
              _glfwInputCursorPos(window,
                                  wl_fixed_to_double(sx),
                                  wl_fixed_to_double(sy));
              return;
          case topDecoration:
              if (window->wl.cursorPosY < _GLFW_DECORATION_WIDTH)
                  cursorName = "n-resize";
              else
                  cursorName = "left_ptr";
              break;
          case leftDecoration:
              if (window->wl.cursorPosY < _GLFW_DECORATION_WIDTH)
                  cursorName = "nw-resize";
              else
                  cursorName = "w-resize";
              break;
          case rightDecoration:
              if (window->wl.cursorPosY < _GLFW_DECORATION_WIDTH)
                  cursorName = "ne-resize";
              else
                  cursorName = "e-resize";
              break;
          case bottomDecoration:
              if (window->wl.cursorPosX < _GLFW_DECORATION_WIDTH)
                  cursorName = "sw-resize";
              else if (window->wl.cursorPosX > window->wl.width + _GLFW_DECORATION_WIDTH)
                  cursorName = "se-resize";
              else
                  cursorName = "s-resize";
              break;
          default:
              assert(0);
      }
      setCursor(window, cursorName);
  }
  
  static void pointerHandleButton(void* data,
                                  struct wl_pointer* pointer,
                                  uint32_t serial,
                                  uint32_t time,
                                  uint32_t button,
                                  uint32_t state)
  {
      _GLFWwindow* window = _glfw.wl.pointerFocus;
      int glfwButton;
      uint32_t edges = XDG_TOPLEVEL_RESIZE_EDGE_NONE;
  
      if (!window)
          return;
      if (button == BTN_LEFT)
      {
          switch (window->wl.decorations.focus)
          {
              case mainWindow:
                  break;
              case topDecoration:
                  if (window->wl.cursorPosY < _GLFW_DECORATION_WIDTH)
                      edges = XDG_TOPLEVEL_RESIZE_EDGE_TOP;
                  else
                  {
                      xdg_toplevel_move(window->wl.xdg.toplevel, _glfw.wl.seat, serial);
                  }
                  break;
              case leftDecoration:
                  if (window->wl.cursorPosY < _GLFW_DECORATION_WIDTH)
                      edges = XDG_TOPLEVEL_RESIZE_EDGE_TOP_LEFT;
                  else
                      edges = XDG_TOPLEVEL_RESIZE_EDGE_LEFT;
                  break;
              case rightDecoration:
                  if (window->wl.cursorPosY < _GLFW_DECORATION_WIDTH)
                      edges = XDG_TOPLEVEL_RESIZE_EDGE_TOP_RIGHT;
                  else
                      edges = XDG_TOPLEVEL_RESIZE_EDGE_RIGHT;
                  break;
              case bottomDecoration:
                  if (window->wl.cursorPosX < _GLFW_DECORATION_WIDTH)
                      edges = XDG_TOPLEVEL_RESIZE_EDGE_BOTTOM_LEFT;
                  else if (window->wl.cursorPosX > window->wl.width + _GLFW_DECORATION_WIDTH)
                      edges = XDG_TOPLEVEL_RESIZE_EDGE_BOTTOM_RIGHT;
                  else
                      edges = XDG_TOPLEVEL_RESIZE_EDGE_BOTTOM;
                  break;
              default:
                  assert(0);
          }
          if (edges != XDG_TOPLEVEL_RESIZE_EDGE_NONE)
          {
              xdg_toplevel_resize(window->wl.xdg.toplevel, _glfw.wl.seat,
                                  serial, edges);
          }
      }
      else if (button == BTN_RIGHT)
      {
          if (window->wl.decorations.focus != mainWindow && window->wl.xdg.toplevel)
          {
              xdg_toplevel_show_window_menu(window->wl.xdg.toplevel,
                                            _glfw.wl.seat, serial,
                                            window->wl.cursorPosX,
                                            window->wl.cursorPosY);
              return;
          }
      }
  
      // Don’t pass the button to the user if it was related to a decoration.
      if (window->wl.decorations.focus != mainWindow)
          return;
  
      _glfw.wl.serial = serial;
  
      /* Makes left, right and middle 0, 1 and 2. Overall order follows evdev
       * codes. */
      glfwButton = button - BTN_LEFT;
  
      _glfwInputMouseClick(window,
                           glfwButton,
                           state == WL_POINTER_BUTTON_STATE_PRESSED
                                  ? GLFW_PRESS
                                  : GLFW_RELEASE,
                           _glfw.wl.xkb.modifiers);
  }
  
  static void pointerHandleAxis(void* data,
                                struct wl_pointer* pointer,
                                uint32_t time,
                                uint32_t axis,
                                wl_fixed_t value)
  {
      _GLFWwindow* window = _glfw.wl.pointerFocus;
      double x = 0.0, y = 0.0;
      // Wayland scroll events are in pointer motion coordinate space (think two
      // finger scroll).  The factor 10 is commonly used to convert to "scroll
      // step means 1.0.
      const double scrollFactor = 1.0 / 10.0;
  
      if (!window)
          return;
  
      assert(axis == WL_POINTER_AXIS_HORIZONTAL_SCROLL ||
             axis == WL_POINTER_AXIS_VERTICAL_SCROLL);
  
      if (axis == WL_POINTER_AXIS_HORIZONTAL_SCROLL)
          x = wl_fixed_to_double(value) * scrollFactor;
      else if (axis == WL_POINTER_AXIS_VERTICAL_SCROLL)
          y = wl_fixed_to_double(value) * scrollFactor;
  
      _glfwInputScroll(window, x, y);
  }
  
  static const struct wl_pointer_listener pointerListener = {
      pointerHandleEnter,
      pointerHandleLeave,
      pointerHandleMotion,
      pointerHandleButton,
      pointerHandleAxis,
  };
  
  static void keyboardHandleKeymap(void* data,
                                   struct wl_keyboard* keyboard,
                                   uint32_t format,
                                   int fd,
                                   uint32_t size)
  {
      struct xkb_keymap* keymap;
      struct xkb_state* state;
  
  #ifdef HAVE_XKBCOMMON_COMPOSE_H
      struct xkb_compose_table* composeTable;
      struct xkb_compose_state* composeState;
  #endif
  
      char* mapStr;
      const char* locale;
  
      if (format != WL_KEYBOARD_KEYMAP_FORMAT_XKB_V1)
      {
          close(fd);
          return;
      }
  
      mapStr = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0);
      if (mapStr == MAP_FAILED) {
          close(fd);
          return;
      }
  
      keymap = xkb_keymap_new_from_string(_glfw.wl.xkb.context,
                                          mapStr,
                                          XKB_KEYMAP_FORMAT_TEXT_V1,
                                          0);
      munmap(mapStr, size);
      close(fd);
  
      if (!keymap)
      {
          _glfwInputError(GLFW_PLATFORM_ERROR,
                          "Wayland: Failed to compile keymap");
          return;
      }
  
      state = xkb_state_new(keymap);
      if (!state)
      {
          _glfwInputError(GLFW_PLATFORM_ERROR,
                          "Wayland: Failed to create XKB state");
          xkb_keymap_unref(keymap);
          return;
      }
  
      // Look up the preferred locale, falling back to "C" as default.
      locale = getenv("LC_ALL");
      if (!locale)
          locale = getenv("LC_CTYPE");
      if (!locale)
          locale = getenv("LANG");
      if (!locale)
          locale = "C";
  
  #ifdef HAVE_XKBCOMMON_COMPOSE_H
      composeTable =
          xkb_compose_table_new_from_locale(_glfw.wl.xkb.context, locale,
                                            XKB_COMPOSE_COMPILE_NO_FLAGS);
      if (composeTable)
      {
          composeState =
              xkb_compose_state_new(composeTable, XKB_COMPOSE_STATE_NO_FLAGS);
          xkb_compose_table_unref(composeTable);
          if (composeState)
              _glfw.wl.xkb.composeState = composeState;
          else
              _glfwInputError(GLFW_PLATFORM_ERROR,
                              "Wayland: Failed to create XKB compose state");
      }
      else
      {
          _glfwInputError(GLFW_PLATFORM_ERROR,
                          "Wayland: Failed to create XKB compose table");
      }
  #endif
  
      xkb_keymap_unref(_glfw.wl.xkb.keymap);
      xkb_state_unref(_glfw.wl.xkb.state);
      _glfw.wl.xkb.keymap = keymap;
      _glfw.wl.xkb.state = state;
  
      _glfw.wl.xkb.controlMask =
          1 << xkb_keymap_mod_get_index(_glfw.wl.xkb.keymap, "Control");
      _glfw.wl.xkb.altMask =
          1 << xkb_keymap_mod_get_index(_glfw.wl.xkb.keymap, "Mod1");
      _glfw.wl.xkb.shiftMask =
          1 << xkb_keymap_mod_get_index(_glfw.wl.xkb.keymap, "Shift");
      _glfw.wl.xkb.superMask =
          1 << xkb_keymap_mod_get_index(_glfw.wl.xkb.keymap, "Mod4");
      _glfw.wl.xkb.capsLockMask =
          1 << xkb_keymap_mod_get_index(_glfw.wl.xkb.keymap, "Lock");
      _glfw.wl.xkb.numLockMask =
          1 << xkb_keymap_mod_get_index(_glfw.wl.xkb.keymap, "Mod2");
  }
  
  static void keyboardHandleEnter(void* data,
                                  struct wl_keyboard* keyboard,
                                  uint32_t serial,
                                  struct wl_surface* surface,
                                  struct wl_array* keys)
  {
      // Happens in the case we just destroyed the surface.
      if (!surface)
          return;
  
      _GLFWwindow* window = wl_surface_get_user_data(surface);
      if (!window)
      {
          window = findWindowFromDecorationSurface(surface, NULL);
          if (!window)
              return;
      }
  
      _glfw.wl.serial = serial;
      _glfw.wl.keyboardFocus = window;
      _glfwInputWindowFocus(window, GLFW_TRUE);
  }
  
  static void keyboardHandleLeave(void* data,
                                  struct wl_keyboard* keyboard,
                                  uint32_t serial,
                                  struct wl_surface* surface)
  {
      _GLFWwindow* window = _glfw.wl.keyboardFocus;
  
      if (!window)
          return;
  
      _glfw.wl.serial = serial;
      _glfw.wl.keyboardFocus = NULL;
      _glfwInputWindowFocus(window, GLFW_FALSE);
  }
  
  static int toGLFWKeyCode(uint32_t key)
  {
      if (key < sizeof(_glfw.wl.keycodes) / sizeof(_glfw.wl.keycodes[0]))
          return _glfw.wl.keycodes[key];
  
      return GLFW_KEY_UNKNOWN;
  }
  
  #ifdef HAVE_XKBCOMMON_COMPOSE_H
  static xkb_keysym_t composeSymbol(xkb_keysym_t sym)
  {
      if (sym == XKB_KEY_NoSymbol || !_glfw.wl.xkb.composeState)
          return sym;
      if (xkb_compose_state_feed(_glfw.wl.xkb.composeState, sym)
              != XKB_COMPOSE_FEED_ACCEPTED)
          return sym;
      switch (xkb_compose_state_get_status(_glfw.wl.xkb.composeState))
      {
          case XKB_COMPOSE_COMPOSED:
              return xkb_compose_state_get_one_sym(_glfw.wl.xkb.composeState);
          case XKB_COMPOSE_COMPOSING:
          case XKB_COMPOSE_CANCELLED:
              return XKB_KEY_NoSymbol;
          case XKB_COMPOSE_NOTHING:
          default:
              return sym;
      }
  }
  #endif
  
  static GLFWbool inputChar(_GLFWwindow* window, uint32_t key)
  {
      uint32_t code, numSyms;
      long cp;
      const xkb_keysym_t *syms;
      xkb_keysym_t sym;
  
      code = key + 8;
      numSyms = xkb_state_key_get_syms(_glfw.wl.xkb.state, code, &syms);
  
      if (numSyms == 1)
      {
  #ifdef HAVE_XKBCOMMON_COMPOSE_H
          sym = composeSymbol(syms[0]);
  #else
          sym = syms[0];
  #endif
          cp = _glfwKeySym2Unicode(sym);
          if (cp != -1)
          {
              const int mods = _glfw.wl.xkb.modifiers;
              const int plain = !(mods & (GLFW_MOD_CONTROL | GLFW_MOD_ALT));
              _glfwInputChar(window, cp, mods, plain);
          }
      }
  
      return xkb_keymap_key_repeats(_glfw.wl.xkb.keymap, syms[0]);
  }
  
  static void keyboardHandleKey(void* data,
                                struct wl_keyboard* keyboard,
                                uint32_t serial,
                                uint32_t time,
                                uint32_t key,
                                uint32_t state)
  {
      int keyCode;
      int action;
      _GLFWwindow* window = _glfw.wl.keyboardFocus;
      GLFWbool shouldRepeat;
      struct itimerspec timer = {};
  
      if (!window)
          return;
  
      keyCode = toGLFWKeyCode(key);
      action = state == WL_KEYBOARD_KEY_STATE_PRESSED
              ? GLFW_PRESS : GLFW_RELEASE;
  
      _glfw.wl.serial = serial;
      _glfwInputKey(window, keyCode, key, action,
                    _glfw.wl.xkb.modifiers);
  
      if (action == GLFW_PRESS)
      {
          shouldRepeat = inputChar(window, key);
  
          if (shouldRepeat && _glfw.wl.keyboardRepeatRate > 0)
          {
              _glfw.wl.keyboardLastKey = keyCode;
              _glfw.wl.keyboardLastScancode = key;
              if (_glfw.wl.keyboardRepeatRate > 1)
                  timer.it_interval.tv_nsec = 1000000000 / _glfw.wl.keyboardRepeatRate;
              else
                  timer.it_interval.tv_sec = 1;
              timer.it_value.tv_sec = _glfw.wl.keyboardRepeatDelay / 1000;
              timer.it_value.tv_nsec = (_glfw.wl.keyboardRepeatDelay % 1000) * 1000000;
          }
      }
      timerfd_settime(_glfw.wl.timerfd, 0, &timer, NULL);
  }
  
  static void keyboardHandleModifiers(void* data,
                                      struct wl_keyboard* keyboard,
                                      uint32_t serial,
                                      uint32_t modsDepressed,
                                      uint32_t modsLatched,
                                      uint32_t modsLocked,
                                      uint32_t group)
  {
      xkb_mod_mask_t mask;
      unsigned int modifiers = 0;
  
      _glfw.wl.serial = serial;
  
      if (!_glfw.wl.xkb.keymap)
          return;
  
      xkb_state_update_mask(_glfw.wl.xkb.state,
                            modsDepressed,
                            modsLatched,
                            modsLocked,
                            0,
                            0,
                            group);
  
      mask = xkb_state_serialize_mods(_glfw.wl.xkb.state,
                                      XKB_STATE_MODS_DEPRESSED |
                                      XKB_STATE_LAYOUT_DEPRESSED |
                                      XKB_STATE_MODS_LATCHED |
                                      XKB_STATE_LAYOUT_LATCHED);
      if (mask & _glfw.wl.xkb.controlMask)
          modifiers |= GLFW_MOD_CONTROL;
      if (mask & _glfw.wl.xkb.altMask)
          modifiers |= GLFW_MOD_ALT;
      if (mask & _glfw.wl.xkb.shiftMask)
          modifiers |= GLFW_MOD_SHIFT;
      if (mask & _glfw.wl.xkb.superMask)
          modifiers |= GLFW_MOD_SUPER;
      if (mask & _glfw.wl.xkb.capsLockMask)
          modifiers |= GLFW_MOD_CAPS_LOCK;
      if (mask & _glfw.wl.xkb.numLockMask)
          modifiers |= GLFW_MOD_NUM_LOCK;
      _glfw.wl.xkb.modifiers = modifiers;
  }
  
  #ifdef WL_KEYBOARD_REPEAT_INFO_SINCE_VERSION
  static void keyboardHandleRepeatInfo(void* data,
                                       struct wl_keyboard* keyboard,
                                       int32_t rate,
                                       int32_t delay)
  {
      if (keyboard != _glfw.wl.keyboard)
          return;
  
      _glfw.wl.keyboardRepeatRate = rate;
      _glfw.wl.keyboardRepeatDelay = delay;
  }
  #endif
  
  static const struct wl_keyboard_listener keyboardListener = {
      keyboardHandleKeymap,
      keyboardHandleEnter,
      keyboardHandleLeave,
      keyboardHandleKey,
      keyboardHandleModifiers,
  #ifdef WL_KEYBOARD_REPEAT_INFO_SINCE_VERSION
      keyboardHandleRepeatInfo,
  #endif
  };
  
  static void seatHandleCapabilities(void* data,
                                     struct wl_seat* seat,
                                     enum wl_seat_capability caps)
  {
      if ((caps & WL_SEAT_CAPABILITY_POINTER) && !_glfw.wl.pointer)
      {
          _glfw.wl.pointer = wl_seat_get_pointer(seat);
          wl_pointer_add_listener(_glfw.wl.pointer, &pointerListener, NULL);
      }
      else if (!(caps & WL_SEAT_CAPABILITY_POINTER) && _glfw.wl.pointer)
      {
          wl_pointer_destroy(_glfw.wl.pointer);
          _glfw.wl.pointer = NULL;
      }
  
      if ((caps & WL_SEAT_CAPABILITY_KEYBOARD) && !_glfw.wl.keyboard)
      {
          _glfw.wl.keyboard = wl_seat_get_keyboard(seat);
          wl_keyboard_add_listener(_glfw.wl.keyboard, &keyboardListener, NULL);
      }
      else if (!(caps & WL_SEAT_CAPABILITY_KEYBOARD) && _glfw.wl.keyboard)
      {
          wl_keyboard_destroy(_glfw.wl.keyboard);
          _glfw.wl.keyboard = NULL;
      }
  }
  
  static void seatHandleName(void* data,
                             struct wl_seat* seat,
                             const char* name)
  {
  }
  
  static const struct wl_seat_listener seatListener = {
      seatHandleCapabilities,
      seatHandleName,
  };
  
  static void dataOfferHandleOffer(void* data,
                                   struct wl_data_offer* dataOffer,
                                   const char* mimeType)
  {
  }
  
  static const struct wl_data_offer_listener dataOfferListener = {
      dataOfferHandleOffer,
  };
  
  static void dataDeviceHandleDataOffer(void* data,
                                        struct wl_data_device* dataDevice,
                                        struct wl_data_offer* id)
  {
      if (_glfw.wl.dataOffer)
          wl_data_offer_destroy(_glfw.wl.dataOffer);
  
      _glfw.wl.dataOffer = id;
      wl_data_offer_add_listener(_glfw.wl.dataOffer, &dataOfferListener, NULL);
  }
  
  static void dataDeviceHandleEnter(void* data,
                                    struct wl_data_device* dataDevice,
                                    uint32_t serial,
                                    struct wl_surface *surface,
                                    wl_fixed_t x,
                                    wl_fixed_t y,
                                    struct wl_data_offer *id)
  {
  }
  
  static void dataDeviceHandleLeave(void* data,
                                    struct wl_data_device* dataDevice)
  {
  }
  
  static void dataDeviceHandleMotion(void* data,
                                     struct wl_data_device* dataDevice,
                                     uint32_t time,
                                     wl_fixed_t x,
                                     wl_fixed_t y)
  {
  }
  
  static void dataDeviceHandleDrop(void* data,
                                   struct wl_data_device* dataDevice)
  {
  }
  
  static void dataDeviceHandleSelection(void* data,
                                        struct wl_data_device* dataDevice,
                                        struct wl_data_offer* id)
  {
  }
  
  static const struct wl_data_device_listener dataDeviceListener = {
      dataDeviceHandleDataOffer,
      dataDeviceHandleEnter,
      dataDeviceHandleLeave,
      dataDeviceHandleMotion,
      dataDeviceHandleDrop,
      dataDeviceHandleSelection,
  };
  
  static void wmBaseHandlePing(void* data,
                               struct xdg_wm_base* wmBase,
                               uint32_t serial)
  {
      xdg_wm_base_pong(wmBase, serial);
  }
  
  static const struct xdg_wm_base_listener wmBaseListener = {
      wmBaseHandlePing
  };
  
  static void registryHandleGlobal(void* data,
                                   struct wl_registry* registry,
                                   uint32_t name,
                                   const char* interface,
                                   uint32_t version)
  {
      if (strcmp(interface, "wl_compositor") == 0)
      {
          _glfw.wl.compositorVersion = min(3, version);
          _glfw.wl.compositor =
              wl_registry_bind(registry, name, &wl_compositor_interface,
                               _glfw.wl.compositorVersion);
      }
      else if (strcmp(interface, "wl_subcompositor") == 0)
      {
          _glfw.wl.subcompositor =
              wl_registry_bind(registry, name, &wl_subcompositor_interface, 1);
      }
      else if (strcmp(interface, "wl_shm") == 0)
      {
          _glfw.wl.shm =
              wl_registry_bind(registry, name, &wl_shm_interface, 1);
      }
      else if (strcmp(interface, "wl_output") == 0)
      {
          _glfwAddOutputWayland(name, version);
      }
      else if (strcmp(interface, "wl_seat") == 0)
      {
          if (!_glfw.wl.seat)
          {
              _glfw.wl.seatVersion = min(4, version);
              _glfw.wl.seat =
                  wl_registry_bind(registry, name, &wl_seat_interface,
                                   _glfw.wl.seatVersion);
              wl_seat_add_listener(_glfw.wl.seat, &seatListener, NULL);
          }
      }
      else if (strcmp(interface, "wl_data_device_manager") == 0)
      {
          if (!_glfw.wl.dataDeviceManager)
          {
              _glfw.wl.dataDeviceManager =
                  wl_registry_bind(registry, name,
                                   &wl_data_device_manager_interface, 1);
          }
      }
      else if (strcmp(interface, "xdg_wm_base") == 0)
      {
          _glfw.wl.wmBase =
              wl_registry_bind(registry, name, &xdg_wm_base_interface, 1);
          xdg_wm_base_add_listener(_glfw.wl.wmBase, &wmBaseListener, NULL);
      }
      else if (strcmp(interface, "zxdg_decoration_manager_v1") == 0)
      {
          _glfw.wl.decorationManager =
              wl_registry_bind(registry, name,
                               &zxdg_decoration_manager_v1_interface,
                               1);
      }
      else if (strcmp(interface, "wp_viewporter") == 0)
      {
          _glfw.wl.viewporter =
              wl_registry_bind(registry, name, &wp_viewporter_interface, 1);
      }
      else if (strcmp(interface, "zwp_relative_pointer_manager_v1") == 0)
      {
          _glfw.wl.relativePointerManager =
              wl_registry_bind(registry, name,
                               &zwp_relative_pointer_manager_v1_interface,
                               1);
      }
      else if (strcmp(interface, "zwp_pointer_constraints_v1") == 0)
      {
          _glfw.wl.pointerConstraints =
              wl_registry_bind(registry, name,
                               &zwp_pointer_constraints_v1_interface,
                               1);
      }
      else if (strcmp(interface, "zwp_idle_inhibit_manager_v1") == 0)
      {
          _glfw.wl.idleInhibitManager =
              wl_registry_bind(registry, name,
                               &zwp_idle_inhibit_manager_v1_interface,
                               1);
      }
  }
  
  static void registryHandleGlobalRemove(void *data,
                                         struct wl_registry *registry,
                                         uint32_t name)
  {
      int i;
      _GLFWmonitor* monitor;
  
      for (i = 0; i < _glfw.monitorCount; ++i)
      {
          monitor = _glfw.monitors[i];
          if (monitor->wl.name == name)
          {
              _glfwInputMonitor(monitor, GLFW_DISCONNECTED, 0);
              return;
          }
      }
  }
  
  
  static const struct wl_registry_listener registryListener = {
      registryHandleGlobal,
      registryHandleGlobalRemove
  };
  
  // Create key code translation tables
  //
  static void createKeyTables(void)
  {
      int scancode;
  
      memset(_glfw.wl.keycodes, -1, sizeof(_glfw.wl.keycodes));
      memset(_glfw.wl.scancodes, -1, sizeof(_glfw.wl.scancodes));
  
      _glfw.wl.keycodes[KEY_GRAVE]      = GLFW_KEY_GRAVE_ACCENT;
      _glfw.wl.keycodes[KEY_1]          = GLFW_KEY_1;
      _glfw.wl.keycodes[KEY_2]          = GLFW_KEY_2;
      _glfw.wl.keycodes[KEY_3]          = GLFW_KEY_3;
      _glfw.wl.keycodes[KEY_4]          = GLFW_KEY_4;
      _glfw.wl.keycodes[KEY_5]          = GLFW_KEY_5;
      _glfw.wl.keycodes[KEY_6]          = GLFW_KEY_6;
      _glfw.wl.keycodes[KEY_7]          = GLFW_KEY_7;
      _glfw.wl.keycodes[KEY_8]          = GLFW_KEY_8;
      _glfw.wl.keycodes[KEY_9]          = GLFW_KEY_9;
      _glfw.wl.keycodes[KEY_0]          = GLFW_KEY_0;
      _glfw.wl.keycodes[KEY_SPACE]      = GLFW_KEY_SPACE;
      _glfw.wl.keycodes[KEY_MINUS]      = GLFW_KEY_MINUS;
      _glfw.wl.keycodes[KEY_EQUAL]      = GLFW_KEY_EQUAL;
      _glfw.wl.keycodes[KEY_Q]          = GLFW_KEY_Q;
      _glfw.wl.keycodes[KEY_W]          = GLFW_KEY_W;
      _glfw.wl.keycodes[KEY_E]          = GLFW_KEY_E;
      _glfw.wl.keycodes[KEY_R]          = GLFW_KEY_R;
      _glfw.wl.keycodes[KEY_T]          = GLFW_KEY_T;
      _glfw.wl.keycodes[KEY_Y]          = GLFW_KEY_Y;
      _glfw.wl.keycodes[KEY_U]          = GLFW_KEY_U;
      _glfw.wl.keycodes[KEY_I]          = GLFW_KEY_I;
      _glfw.wl.keycodes[KEY_O]          = GLFW_KEY_O;
      _glfw.wl.keycodes[KEY_P]          = GLFW_KEY_P;
      _glfw.wl.keycodes[KEY_LEFTBRACE]  = GLFW_KEY_LEFT_BRACKET;
      _glfw.wl.keycodes[KEY_RIGHTBRACE] = GLFW_KEY_RIGHT_BRACKET;
      _glfw.wl.keycodes[KEY_A]          = GLFW_KEY_A;
      _glfw.wl.keycodes[KEY_S]          = GLFW_KEY_S;
      _glfw.wl.keycodes[KEY_D]          = GLFW_KEY_D;
      _glfw.wl.keycodes[KEY_F]          = GLFW_KEY_F;
      _glfw.wl.keycodes[KEY_G]          = GLFW_KEY_G;
      _glfw.wl.keycodes[KEY_H]          = GLFW_KEY_H;
      _glfw.wl.keycodes[KEY_J]          = GLFW_KEY_J;
      _glfw.wl.keycodes[KEY_K]          = GLFW_KEY_K;
      _glfw.wl.keycodes[KEY_L]          = GLFW_KEY_L;
      _glfw.wl.keycodes[KEY_SEMICOLON]  = GLFW_KEY_SEMICOLON;
      _glfw.wl.keycodes[KEY_APOSTROPHE] = GLFW_KEY_APOSTROPHE;
      _glfw.wl.keycodes[KEY_Z]          = GLFW_KEY_Z;
      _glfw.wl.keycodes[KEY_X]          = GLFW_KEY_X;
      _glfw.wl.keycodes[KEY_C]          = GLFW_KEY_C;
      _glfw.wl.keycodes[KEY_V]          = GLFW_KEY_V;
      _glfw.wl.keycodes[KEY_B]          = GLFW_KEY_B;
      _glfw.wl.keycodes[KEY_N]          = GLFW_KEY_N;
      _glfw.wl.keycodes[KEY_M]          = GLFW_KEY_M;
      _glfw.wl.keycodes[KEY_COMMA]      = GLFW_KEY_COMMA;
      _glfw.wl.keycodes[KEY_DOT]        = GLFW_KEY_PERIOD;
      _glfw.wl.keycodes[KEY_SLASH]      = GLFW_KEY_SLASH;
      _glfw.wl.keycodes[KEY_BACKSLASH]  = GLFW_KEY_BACKSLASH;
      _glfw.wl.keycodes[KEY_ESC]        = GLFW_KEY_ESCAPE;
      _glfw.wl.keycodes[KEY_TAB]        = GLFW_KEY_TAB;
      _glfw.wl.keycodes[KEY_LEFTSHIFT]  = GLFW_KEY_LEFT_SHIFT;
      _glfw.wl.keycodes[KEY_RIGHTSHIFT] = GLFW_KEY_RIGHT_SHIFT;
      _glfw.wl.keycodes[KEY_LEFTCTRL]   = GLFW_KEY_LEFT_CONTROL;
      _glfw.wl.keycodes[KEY_RIGHTCTRL]  = GLFW_KEY_RIGHT_CONTROL;
      _glfw.wl.keycodes[KEY_LEFTALT]    = GLFW_KEY_LEFT_ALT;
      _glfw.wl.keycodes[KEY_RIGHTALT]   = GLFW_KEY_RIGHT_ALT;
      _glfw.wl.keycodes[KEY_LEFTMETA]   = GLFW_KEY_LEFT_SUPER;
      _glfw.wl.keycodes[KEY_RIGHTMETA]  = GLFW_KEY_RIGHT_SUPER;
      _glfw.wl.keycodes[KEY_MENU]       = GLFW_KEY_MENU;
      _glfw.wl.keycodes[KEY_NUMLOCK]    = GLFW_KEY_NUM_LOCK;
      _glfw.wl.keycodes[KEY_CAPSLOCK]   = GLFW_KEY_CAPS_LOCK;
      _glfw.wl.keycodes[KEY_PRINT]      = GLFW_KEY_PRINT_SCREEN;
      _glfw.wl.keycodes[KEY_SCROLLLOCK] = GLFW_KEY_SCROLL_LOCK;
      _glfw.wl.keycodes[KEY_PAUSE]      = GLFW_KEY_PAUSE;
      _glfw.wl.keycodes[KEY_DELETE]     = GLFW_KEY_DELETE;
      _glfw.wl.keycodes[KEY_BACKSPACE]  = GLFW_KEY_BACKSPACE;
      _glfw.wl.keycodes[KEY_ENTER]      = GLFW_KEY_ENTER;
      _glfw.wl.keycodes[KEY_HOME]       = GLFW_KEY_HOME;
      _glfw.wl.keycodes[KEY_END]        = GLFW_KEY_END;
      _glfw.wl.keycodes[KEY_PAGEUP]     = GLFW_KEY_PAGE_UP;
      _glfw.wl.keycodes[KEY_PAGEDOWN]   = GLFW_KEY_PAGE_DOWN;
      _glfw.wl.keycodes[KEY_INSERT]     = GLFW_KEY_INSERT;
      _glfw.wl.keycodes[KEY_LEFT]       = GLFW_KEY_LEFT;
      _glfw.wl.keycodes[KEY_RIGHT]      = GLFW_KEY_RIGHT;
      _glfw.wl.keycodes[KEY_DOWN]       = GLFW_KEY_DOWN;
      _glfw.wl.keycodes[KEY_UP]         = GLFW_KEY_UP;
      _glfw.wl.keycodes[KEY_F1]         = GLFW_KEY_F1;
      _glfw.wl.keycodes[KEY_F2]         = GLFW_KEY_F2;
      _glfw.wl.keycodes[KEY_F3]         = GLFW_KEY_F3;
      _glfw.wl.keycodes[KEY_F4]         = GLFW_KEY_F4;
      _glfw.wl.keycodes[KEY_F5]         = GLFW_KEY_F5;
      _glfw.wl.keycodes[KEY_F6]         = GLFW_KEY_F6;
      _glfw.wl.keycodes[KEY_F7]         = GLFW_KEY_F7;
      _glfw.wl.keycodes[KEY_F8]         = GLFW_KEY_F8;
      _glfw.wl.keycodes[KEY_F9]         = GLFW_KEY_F9;
      _glfw.wl.keycodes[KEY_F10]        = GLFW_KEY_F10;
      _glfw.wl.keycodes[KEY_F11]        = GLFW_KEY_F11;
      _glfw.wl.keycodes[KEY_F12]        = GLFW_KEY_F12;
      _glfw.wl.keycodes[KEY_F13]        = GLFW_KEY_F13;
      _glfw.wl.keycodes[KEY_F14]        = GLFW_KEY_F14;
      _glfw.wl.keycodes[KEY_F15]        = GLFW_KEY_F15;
      _glfw.wl.keycodes[KEY_F16]        = GLFW_KEY_F16;
      _glfw.wl.keycodes[KEY_F17]        = GLFW_KEY_F17;
      _glfw.wl.keycodes[KEY_F18]        = GLFW_KEY_F18;
      _glfw.wl.keycodes[KEY_F19]        = GLFW_KEY_F19;
      _glfw.wl.keycodes[KEY_F20]        = GLFW_KEY_F20;
      _glfw.wl.keycodes[KEY_F21]        = GLFW_KEY_F21;
      _glfw.wl.keycodes[KEY_F22]        = GLFW_KEY_F22;
      _glfw.wl.keycodes[KEY_F23]        = GLFW_KEY_F23;
      _glfw.wl.keycodes[KEY_F24]        = GLFW_KEY_F24;
      _glfw.wl.keycodes[KEY_KPSLASH]    = GLFW_KEY_KP_DIVIDE;
      _glfw.wl.keycodes[KEY_KPDOT]      = GLFW_KEY_KP_MULTIPLY;
      _glfw.wl.keycodes[KEY_KPMINUS]    = GLFW_KEY_KP_SUBTRACT;
      _glfw.wl.keycodes[KEY_KPPLUS]     = GLFW_KEY_KP_ADD;
      _glfw.wl.keycodes[KEY_KP0]        = GLFW_KEY_KP_0;
      _glfw.wl.keycodes[KEY_KP1]        = GLFW_KEY_KP_1;
      _glfw.wl.keycodes[KEY_KP2]        = GLFW_KEY_KP_2;
      _glfw.wl.keycodes[KEY_KP3]        = GLFW_KEY_KP_3;
      _glfw.wl.keycodes[KEY_KP4]        = GLFW_KEY_KP_4;
      _glfw.wl.keycodes[KEY_KP5]        = GLFW_KEY_KP_5;
      _glfw.wl.keycodes[KEY_KP6]        = GLFW_KEY_KP_6;
      _glfw.wl.keycodes[KEY_KP7]        = GLFW_KEY_KP_7;
      _glfw.wl.keycodes[KEY_KP8]        = GLFW_KEY_KP_8;
      _glfw.wl.keycodes[KEY_KP9]        = GLFW_KEY_KP_9;
      _glfw.wl.keycodes[KEY_KPCOMMA]    = GLFW_KEY_KP_DECIMAL;
      _glfw.wl.keycodes[KEY_KPEQUAL]    = GLFW_KEY_KP_EQUAL;
      _glfw.wl.keycodes[KEY_KPENTER]    = GLFW_KEY_KP_ENTER;
  
      for (scancode = 0;  scancode < 256;  scancode++)
      {
          if (_glfw.wl.keycodes[scancode] > 0)
              _glfw.wl.scancodes[_glfw.wl.keycodes[scancode]] = scancode;
      }
  }
  
  
  //////////////////////////////////////////////////////////////////////////
  //////                       GLFW platform API                      //////
  //////////////////////////////////////////////////////////////////////////
  
  int _glfwPlatformInit(void)
  {
      const char *cursorTheme;
      const char *cursorSizeStr;
      char *cursorSizeEnd;
      long cursorSizeLong;
      int cursorSize;
  
      _glfw.wl.cursor.handle = _glfw_dlopen("libwayland-cursor.so.0");
      if (!_glfw.wl.cursor.handle)
      {
          _glfwInputError(GLFW_PLATFORM_ERROR,
                          "Wayland: Failed to open libwayland-cursor");
          return GLFW_FALSE;
      }
  
      _glfw.wl.cursor.theme_load = (PFN_wl_cursor_theme_load)
          _glfw_dlsym(_glfw.wl.cursor.handle, "wl_cursor_theme_load");
      _glfw.wl.cursor.theme_destroy = (PFN_wl_cursor_theme_destroy)
          _glfw_dlsym(_glfw.wl.cursor.handle, "wl_cursor_theme_destroy");
      _glfw.wl.cursor.theme_get_cursor = (PFN_wl_cursor_theme_get_cursor)
          _glfw_dlsym(_glfw.wl.cursor.handle, "wl_cursor_theme_get_cursor");
      _glfw.wl.cursor.image_get_buffer = (PFN_wl_cursor_image_get_buffer)
          _glfw_dlsym(_glfw.wl.cursor.handle, "wl_cursor_image_get_buffer");
  
      _glfw.wl.egl.handle = _glfw_dlopen("libwayland-egl.so.1");
      if (!_glfw.wl.egl.handle)
      {
          _glfwInputError(GLFW_PLATFORM_ERROR,
                          "Wayland: Failed to open libwayland-egl");
          return GLFW_FALSE;
      }
  
      _glfw.wl.egl.window_create = (PFN_wl_egl_window_create)
          _glfw_dlsym(_glfw.wl.egl.handle, "wl_egl_window_create");
      _glfw.wl.egl.window_destroy = (PFN_wl_egl_window_destroy)
          _glfw_dlsym(_glfw.wl.egl.handle, "wl_egl_window_destroy");
      _glfw.wl.egl.window_resize = (PFN_wl_egl_window_resize)
          _glfw_dlsym(_glfw.wl.egl.handle, "wl_egl_window_resize");
  
      _glfw.wl.xkb.handle = _glfw_dlopen("libxkbcommon.so.0");
      if (!_glfw.wl.xkb.handle)
      {
          _glfwInputError(GLFW_PLATFORM_ERROR,
                          "Wayland: Failed to open libxkbcommon");
          return GLFW_FALSE;
      }
  
      _glfw.wl.xkb.context_new = (PFN_xkb_context_new)
          _glfw_dlsym(_glfw.wl.xkb.handle, "xkb_context_new");
      _glfw.wl.xkb.context_unref = (PFN_xkb_context_unref)
          _glfw_dlsym(_glfw.wl.xkb.handle, "xkb_context_unref");
      _glfw.wl.xkb.keymap_new_from_string = (PFN_xkb_keymap_new_from_string)
          _glfw_dlsym(_glfw.wl.xkb.handle, "xkb_keymap_new_from_string");
      _glfw.wl.xkb.keymap_unref = (PFN_xkb_keymap_unref)
          _glfw_dlsym(_glfw.wl.xkb.handle, "xkb_keymap_unref");
      _glfw.wl.xkb.keymap_mod_get_index = (PFN_xkb_keymap_mod_get_index)
          _glfw_dlsym(_glfw.wl.xkb.handle, "xkb_keymap_mod_get_index");
      _glfw.wl.xkb.keymap_key_repeats = (PFN_xkb_keymap_key_repeats)
          _glfw_dlsym(_glfw.wl.xkb.handle, "xkb_keymap_key_repeats");
      _glfw.wl.xkb.state_new = (PFN_xkb_state_new)
          _glfw_dlsym(_glfw.wl.xkb.handle, "xkb_state_new");
      _glfw.wl.xkb.state_unref = (PFN_xkb_state_unref)
          _glfw_dlsym(_glfw.wl.xkb.handle, "xkb_state_unref");
      _glfw.wl.xkb.state_key_get_syms = (PFN_xkb_state_key_get_syms)
          _glfw_dlsym(_glfw.wl.xkb.handle, "xkb_state_key_get_syms");
      _glfw.wl.xkb.state_update_mask = (PFN_xkb_state_update_mask)
          _glfw_dlsym(_glfw.wl.xkb.handle, "xkb_state_update_mask");
      _glfw.wl.xkb.state_serialize_mods = (PFN_xkb_state_serialize_mods)
          _glfw_dlsym(_glfw.wl.xkb.handle, "xkb_state_serialize_mods");
  
  #ifdef HAVE_XKBCOMMON_COMPOSE_H
      _glfw.wl.xkb.compose_table_new_from_locale = (PFN_xkb_compose_table_new_from_locale)
          _glfw_dlsym(_glfw.wl.xkb.handle, "xkb_compose_table_new_from_locale");
      _glfw.wl.xkb.compose_table_unref = (PFN_xkb_compose_table_unref)
          _glfw_dlsym(_glfw.wl.xkb.handle, "xkb_compose_table_unref");
      _glfw.wl.xkb.compose_state_new = (PFN_xkb_compose_state_new)
          _glfw_dlsym(_glfw.wl.xkb.handle, "xkb_compose_state_new");
      _glfw.wl.xkb.compose_state_unref = (PFN_xkb_compose_state_unref)
          _glfw_dlsym(_glfw.wl.xkb.handle, "xkb_compose_state_unref");
      _glfw.wl.xkb.compose_state_feed = (PFN_xkb_compose_state_feed)
          _glfw_dlsym(_glfw.wl.xkb.handle, "xkb_compose_state_feed");
      _glfw.wl.xkb.compose_state_get_status = (PFN_xkb_compose_state_get_status)
          _glfw_dlsym(_glfw.wl.xkb.handle, "xkb_compose_state_get_status");
      _glfw.wl.xkb.compose_state_get_one_sym = (PFN_xkb_compose_state_get_one_sym)
          _glfw_dlsym(_glfw.wl.xkb.handle, "xkb_compose_state_get_one_sym");
  #endif
  
      _glfw.wl.display = wl_display_connect(NULL);
      if (!_glfw.wl.display)
      {
          _glfwInputError(GLFW_PLATFORM_ERROR,
                          "Wayland: Failed to connect to display");
          return GLFW_FALSE;
      }
  
      _glfw.wl.registry = wl_display_get_registry(_glfw.wl.display);
      wl_registry_add_listener(_glfw.wl.registry, &registryListener, NULL);
  
      createKeyTables();
  
      _glfw.wl.xkb.context = xkb_context_new(0);
      if (!_glfw.wl.xkb.context)
      {
          _glfwInputError(GLFW_PLATFORM_ERROR,
                          "Wayland: Failed to initialize xkb context");
          return GLFW_FALSE;
      }
  
      // Sync so we got all registry objects
      wl_display_roundtrip(_glfw.wl.display);
  
      // Sync so we got all initial output events
      wl_display_roundtrip(_glfw.wl.display);
  
  #ifdef __linux__
      if (!_glfwInitJoysticksLinux())
          return GLFW_FALSE;
  #endif
  
      _glfwInitTimerPOSIX();
  
      _glfw.wl.timerfd = -1;
      if (_glfw.wl.seatVersion >= 4)
          _glfw.wl.timerfd = timerfd_create(CLOCK_MONOTONIC, TFD_CLOEXEC);
  
      if (!_glfw.wl.wmBase)
      {
          _glfwInputError(GLFW_PLATFORM_ERROR,
                          "Wayland: Failed to find xdg-shell in your compositor");
          return GLFW_FALSE;
      }
  
      if (_glfw.wl.pointer && _glfw.wl.shm)
      {
          cursorTheme = getenv("XCURSOR_THEME");
          cursorSizeStr = getenv("XCURSOR_SIZE");
          cursorSize = 32;
          if (cursorSizeStr)
          {
              errno = 0;
              cursorSizeLong = strtol(cursorSizeStr, &cursorSizeEnd, 10);
              if (!*cursorSizeEnd && !errno && cursorSizeLong > 0 && cursorSizeLong <= INT_MAX)
                  cursorSize = (int)cursorSizeLong;
          }
          _glfw.wl.cursorTheme =
              wl_cursor_theme_load(cursorTheme, cursorSize, _glfw.wl.shm);
          if (!_glfw.wl.cursorTheme)
          {
              _glfwInputError(GLFW_PLATFORM_ERROR,
                              "Wayland: Unable to load default cursor theme");
              return GLFW_FALSE;
          }
          // If this happens to be NULL, we just fallback to the scale=1 version.
          _glfw.wl.cursorThemeHiDPI =
              wl_cursor_theme_load(cursorTheme, 2 * cursorSize, _glfw.wl.shm);
          _glfw.wl.cursorSurface =
              wl_compositor_create_surface(_glfw.wl.compositor);
          _glfw.wl.cursorTimerfd = timerfd_create(CLOCK_MONOTONIC, TFD_CLOEXEC);
      }
  
      if (_glfw.wl.seat && _glfw.wl.dataDeviceManager)
      {
          _glfw.wl.dataDevice =
              wl_data_device_manager_get_data_device(_glfw.wl.dataDeviceManager,
                                                     _glfw.wl.seat);
          wl_data_device_add_listener(_glfw.wl.dataDevice, &dataDeviceListener, NULL);
          _glfw.wl.clipboardString = malloc(4096);
          if (!_glfw.wl.clipboardString)
          {
              _glfwInputError(GLFW_PLATFORM_ERROR,
                              "Wayland: Unable to allocate clipboard memory");
              return GLFW_FALSE;
          }
          _glfw.wl.clipboardSize = 4096;
      }
  
      return GLFW_TRUE;
  }
  
  void _glfwPlatformTerminate(void)
  {
  #ifdef __linux__
      _glfwTerminateJoysticksLinux();
  #endif
      _glfwTerminateEGL();
      if (_glfw.wl.egl.handle)
      {
          _glfw_dlclose(_glfw.wl.egl.handle);
          _glfw.wl.egl.handle = NULL;
      }
  
  #ifdef HAVE_XKBCOMMON_COMPOSE_H
      if (_glfw.wl.xkb.composeState)
          xkb_compose_state_unref(_glfw.wl.xkb.composeState);
  #endif
      if (_glfw.wl.xkb.keymap)
          xkb_keymap_unref(_glfw.wl.xkb.keymap);
      if (_glfw.wl.xkb.state)
          xkb_state_unref(_glfw.wl.xkb.state);
      if (_glfw.wl.xkb.context)
          xkb_context_unref(_glfw.wl.xkb.context);
      if (_glfw.wl.xkb.handle)
      {
          _glfw_dlclose(_glfw.wl.xkb.handle);
          _glfw.wl.xkb.handle = NULL;
      }
  
      if (_glfw.wl.cursorTheme)
          wl_cursor_theme_destroy(_glfw.wl.cursorTheme);
      if (_glfw.wl.cursorThemeHiDPI)
          wl_cursor_theme_destroy(_glfw.wl.cursorThemeHiDPI);
      if (_glfw.wl.cursor.handle)
      {
          _glfw_dlclose(_glfw.wl.cursor.handle);
          _glfw.wl.cursor.handle = NULL;
      }
  
      if (_glfw.wl.cursorSurface)
          wl_surface_destroy(_glfw.wl.cursorSurface);
      if (_glfw.wl.subcompositor)
          wl_subcompositor_destroy(_glfw.wl.subcompositor);
      if (_glfw.wl.compositor)
          wl_compositor_destroy(_glfw.wl.compositor);
      if (_glfw.wl.shm)
          wl_shm_destroy(_glfw.wl.shm);
      if (_glfw.wl.viewporter)
          wp_viewporter_destroy(_glfw.wl.viewporter);
      if (_glfw.wl.decorationManager)
          zxdg_decoration_manager_v1_destroy(_glfw.wl.decorationManager);
      if (_glfw.wl.wmBase)
          xdg_wm_base_destroy(_glfw.wl.wmBase);
      if (_glfw.wl.dataSource)
          wl_data_source_destroy(_glfw.wl.dataSource);
      if (_glfw.wl.dataDevice)
          wl_data_device_destroy(_glfw.wl.dataDevice);
      if (_glfw.wl.dataOffer)
          wl_data_offer_destroy(_glfw.wl.dataOffer);
      if (_glfw.wl.dataDeviceManager)
          wl_data_device_manager_destroy(_glfw.wl.dataDeviceManager);
      if (_glfw.wl.pointer)
          wl_pointer_destroy(_glfw.wl.pointer);
      if (_glfw.wl.keyboard)
          wl_keyboard_destroy(_glfw.wl.keyboard);
      if (_glfw.wl.seat)
          wl_seat_destroy(_glfw.wl.seat);
      if (_glfw.wl.relativePointerManager)
          zwp_relative_pointer_manager_v1_destroy(_glfw.wl.relativePointerManager);
      if (_glfw.wl.pointerConstraints)
          zwp_pointer_constraints_v1_destroy(_glfw.wl.pointerConstraints);
      if (_glfw.wl.idleInhibitManager)
          zwp_idle_inhibit_manager_v1_destroy(_glfw.wl.idleInhibitManager);
      if (_glfw.wl.registry)
          wl_registry_destroy(_glfw.wl.registry);
      if (_glfw.wl.display)
      {
          wl_display_flush(_glfw.wl.display);
          wl_display_disconnect(_glfw.wl.display);
      }
  
      if (_glfw.wl.timerfd >= 0)
          close(_glfw.wl.timerfd);
      if (_glfw.wl.cursorTimerfd >= 0)
          close(_glfw.wl.cursorTimerfd);
  
      if (_glfw.wl.clipboardString)
          free(_glfw.wl.clipboardString);
      if (_glfw.wl.clipboardSendString)
          free(_glfw.wl.clipboardSendString);
  }
  
  const char* _glfwPlatformGetVersionString(void)
  {
      return _GLFW_VERSION_NUMBER " Wayland EGL OSMesa"
  #if defined(_POSIX_TIMERS) && defined(_POSIX_MONOTONIC_CLOCK)
          " clock_gettime"
  #else
          " gettimeofday"
  #endif
          " evdev"
  #if defined(_GLFW_BUILD_DLL)
          " shared"
  #endif
          ;
  }
  