Wayland: Move window related code to window module

The Wayland backend was the only one where half the window and input
related code was in the init module.  As those bits want to share more
utility code with the window module, the interface between them grows.

To prevent that, this gathers nearly all window and input related code
into the window module.

src/wl_init.c

@@ -28,7 +28,6 @@
 
 #include "internal.h"
 
-#include <assert.h>
 #include <errno.h>
 #include <limits.h>
 #include <linux/input.h>
@@ -56,765 +55,6 @@
 #include "wayland-pointer-constraints-unstable-v1-client-protocol-code.h"
 #include "wayland-idle-inhibit-unstable-v1-client-protocol-code.h"
 
-
-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* userData,
-                               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.pointerEnterSerial = serial;
-    _glfw.wl.pointerFocus = window;
-
-    window->wl.hovered = GLFW_TRUE;
-
-    _glfwSetCursorWayland(window, window->wl.currentCursor);
-    _glfwInputCursorEnter(window, GLFW_TRUE);
-}
-
-static void pointerHandleLeave(void* userData,
-                               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);
-    _glfw.wl.cursorPreviousName = NULL;
-}
-
-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_CURSOR_UNAVAILABLE,
-                        "Wayland: Standard cursor shape unavailable");
-        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.pointerEnterSerial,
-                          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);
-    _glfw.wl.cursorPreviousName = name;
-}
-
-static void pointerHandleMotion(void* userData,
-                                struct wl_pointer* pointer,
-                                uint32_t time,
-                                wl_fixed_t sx,
-                                wl_fixed_t sy)
-{
-    _GLFWwindow* window = _glfw.wl.pointerFocus;
-    const char* cursorName = NULL;
-    double x, y;
-
-    if (!window)
-        return;
-
-    if (window->cursorMode == GLFW_CURSOR_DISABLED)
-        return;
-    x = wl_fixed_to_double(sx);
-    y = wl_fixed_to_double(sy);
-    window->wl.cursorPosX = x;
-    window->wl.cursorPosY = y;
-
-    switch (window->wl.decorations.focus)
-    {
-        case mainWindow:
-            _glfwInputCursorPos(window, x, y);
-            _glfw.wl.cursorPreviousName = NULL;
-            return;
-        case topDecoration:
-            if (y < _GLFW_DECORATION_WIDTH)
-                cursorName = "n-resize";
-            else
-                cursorName = "left_ptr";
-            break;
-        case leftDecoration:
-            if (y < _GLFW_DECORATION_WIDTH)
-                cursorName = "nw-resize";
-            else
-                cursorName = "w-resize";
-            break;
-        case rightDecoration:
-            if (y < _GLFW_DECORATION_WIDTH)
-                cursorName = "ne-resize";
-            else
-                cursorName = "e-resize";
-            break;
-        case bottomDecoration:
-            if (x < _GLFW_DECORATION_WIDTH)
-                cursorName = "sw-resize";
-            else if (x > window->wl.width + _GLFW_DECORATION_WIDTH)
-                cursorName = "se-resize";
-            else
-                cursorName = "s-resize";
-            break;
-        default:
-            assert(0);
-    }
-    if (_glfw.wl.cursorPreviousName != cursorName)
-        setCursor(window, cursorName);
-}
-
-static void pointerHandleButton(void* userData,
-                                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);
-            return;
-        }
-    }
-    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* userData,
-                              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* userData,
-                                 struct wl_keyboard* keyboard,
-                                 uint32_t format,
-                                 int fd,
-                                 uint32_t size)
-{
-    struct xkb_keymap* keymap;
-    struct xkb_state* state;
-    struct xkb_compose_table* composeTable;
-    struct xkb_compose_state* composeState;
-
-    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";
-
-    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");
-    }
-
-    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* userData,
-                                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* userData,
-                                struct wl_keyboard* keyboard,
-                                uint32_t serial,
-                                struct wl_surface* surface)
-{
-    _GLFWwindow* window = _glfw.wl.keyboardFocus;
-
-    if (!window)
-        return;
-
-    struct itimerspec timer = {};
-    timerfd_settime(_glfw.wl.timerfd, 0, &timer, NULL);
-
-    _glfw.wl.serial = serial;
-    _glfw.wl.keyboardFocus = NULL;
-    _glfwInputWindowFocus(window, GLFW_FALSE);
-}
-
-static int translateKey(uint32_t scancode)
-{
-    if (scancode < sizeof(_glfw.wl.keycodes) / sizeof(_glfw.wl.keycodes[0]))
-        return _glfw.wl.keycodes[scancode];
-
-    return GLFW_KEY_UNKNOWN;
-}
-
-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;
-    }
-}
-
-GLFWbool _glfwInputTextWayland(_GLFWwindow* window, uint32_t scancode)
-{
-    const xkb_keysym_t* keysyms;
-    const xkb_keycode_t keycode = scancode + 8;
-
-    if (xkb_state_key_get_syms(_glfw.wl.xkb.state, keycode, &keysyms) == 1)
-    {
-        const xkb_keysym_t keysym = composeSymbol(keysyms[0]);
-        const uint32_t codepoint = _glfwKeySym2Unicode(keysym);
-        if (codepoint != GLFW_INVALID_CODEPOINT)
-        {
-            const int mods = _glfw.wl.xkb.modifiers;
-            const int plain = !(mods & (GLFW_MOD_CONTROL | GLFW_MOD_ALT));
-            _glfwInputChar(window, codepoint, mods, plain);
-        }
-    }
-
-    return xkb_keymap_key_repeats(_glfw.wl.xkb.keymap, keycode);
-}
-
-static void keyboardHandleKey(void* userData,
-                              struct wl_keyboard* keyboard,
-                              uint32_t serial,
-                              uint32_t time,
-                              uint32_t scancode,
-                              uint32_t state)
-{
-    _GLFWwindow* window = _glfw.wl.keyboardFocus;
-    if (!window)
-        return;
-
-    const int key = translateKey(scancode);
-    const int action =
-        state == WL_KEYBOARD_KEY_STATE_PRESSED ? GLFW_PRESS : GLFW_RELEASE;
-
-    _glfw.wl.serial = serial;
-    _glfwInputKey(window, key, scancode, action, _glfw.wl.xkb.modifiers);
-
-    struct itimerspec timer = {};
-
-    if (action == GLFW_PRESS)
-    {
-        const GLFWbool shouldRepeat = _glfwInputTextWayland(window, scancode);
-
-        if (shouldRepeat && _glfw.wl.keyboardRepeatRate > 0)
-        {
-            _glfw.wl.keyboardLastKey = key;
-            _glfw.wl.keyboardLastScancode = scancode;
-            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* userData,
-                                    struct wl_keyboard* keyboard,
-                                    uint32_t serial,
-                                    uint32_t modsDepressed,
-                                    uint32_t modsLatched,
-                                    uint32_t modsLocked,
-                                    uint32_t group)
-{
-    _glfw.wl.serial = serial;
-
-    if (!_glfw.wl.xkb.keymap)
-        return;
-
-    xkb_state_update_mask(_glfw.wl.xkb.state,
-                          modsDepressed,
-                          modsLatched,
-                          modsLocked,
-                          0,
-                          0,
-                          group);
-
-    const xkb_mod_mask_t 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);
-
-    unsigned int mods = 0;
-
-    if (mask & _glfw.wl.xkb.controlMask)
-        mods |= GLFW_MOD_CONTROL;
-    if (mask & _glfw.wl.xkb.altMask)
-        mods |= GLFW_MOD_ALT;
-    if (mask & _glfw.wl.xkb.shiftMask)
-        mods |= GLFW_MOD_SHIFT;
-    if (mask & _glfw.wl.xkb.superMask)
-        mods |= GLFW_MOD_SUPER;
-    if (mask & _glfw.wl.xkb.capsLockMask)
-        mods |= GLFW_MOD_CAPS_LOCK;
-    if (mask & _glfw.wl.xkb.numLockMask)
-        mods |= GLFW_MOD_NUM_LOCK;
-
-    _glfw.wl.xkb.modifiers = mods;
-}
-
-#ifdef WL_KEYBOARD_REPEAT_INFO_SINCE_VERSION
-static void keyboardHandleRepeatInfo(void* userData,
-                                     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* userData,
-                                   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* userData,
-                           struct wl_seat* seat,
-                           const char* name)
-{
-}
-
-static const struct wl_seat_listener seatListener = {
-    seatHandleCapabilities,
-    seatHandleName,
-};
-
-static void dataOfferHandleOffer(void* userData,
-                                 struct wl_data_offer* offer,
-                                 const char* mimeType)
-{
-    for (unsigned int i = 0; i < _glfw.wl.offerCount; i++)
-    {
-        if (_glfw.wl.offers[i].offer == offer)
-        {
-            if (strcmp(mimeType, "text/plain;charset=utf-8") == 0)
-                _glfw.wl.offers[i].text_plain_utf8 = GLFW_TRUE;
-
-            break;
-        }
-    }
-}
-
-static const struct wl_data_offer_listener dataOfferListener = {
-    dataOfferHandleOffer,
-};
-
-static void dataDeviceHandleDataOffer(void* userData,
-                                      struct wl_data_device* device,
-                                      struct wl_data_offer* offer)
-{
-    _GLFWofferWayland* offers =
-        _glfw_realloc(_glfw.wl.offers, _glfw.wl.offerCount + 1);
-    if (!offers)
-    {
-        _glfwInputError(GLFW_OUT_OF_MEMORY, NULL);
-        return;
-    }
-
-    _glfw.wl.offers = offers;
-    _glfw.wl.offerCount++;
-
-    _glfw.wl.offers[_glfw.wl.offerCount - 1] = (_GLFWofferWayland) { offer };
-    wl_data_offer_add_listener(offer, &dataOfferListener, NULL);
-}
-
-static void dataDeviceHandleEnter(void* userData,
-                                  struct wl_data_device* device,
-                                  uint32_t serial,
-                                  struct wl_surface* surface,
-                                  wl_fixed_t x,
-                                  wl_fixed_t y,
-                                  struct wl_data_offer* offer)
-{
-    for (unsigned int i = 0; i < _glfw.wl.offerCount; i++)
-    {
-        if (_glfw.wl.offers[i].offer == offer)
-        {
-            _glfw.wl.offers[i] = _glfw.wl.offers[_glfw.wl.offerCount - 1];
-            _glfw.wl.offerCount--;
-
-            // We don't yet handle drag and drop
-            wl_data_offer_accept(offer, serial, NULL);
-            wl_data_offer_destroy(offer);
-            break;
-        }
-    }
-}
-
-static void dataDeviceHandleLeave(void* userData,
-                                  struct wl_data_device* device)
-{
-}
-
-static void dataDeviceHandleMotion(void* userData,
-                                   struct wl_data_device* device,
-                                   uint32_t time,
-                                   wl_fixed_t x,
-                                   wl_fixed_t y)
-{
-}
-
-static void dataDeviceHandleDrop(void* userData,
-                                 struct wl_data_device* device)
-{
-}
-
-static void dataDeviceHandleSelection(void* userData,
-                                      struct wl_data_device* device,
-                                      struct wl_data_offer* offer)
-{
-    if (_glfw.wl.selectionOffer)
-    {
-        wl_data_offer_destroy(_glfw.wl.selectionOffer);
-        _glfw.wl.selectionOffer = NULL;
-    }
-
-    for (unsigned int i = 0; i < _glfw.wl.offerCount; i++)
-    {
-        if (_glfw.wl.offers[i].offer == offer)
-        {
-            if (_glfw.wl.offers[i].text_plain_utf8)
-                _glfw.wl.selectionOffer = offer;
-            else
-                wl_data_offer_destroy(offer);
-
-            _glfw.wl.offers[i] = _glfw.wl.offers[_glfw.wl.offerCount - 1];
-            _glfw.wl.offerCount--;
-            break;
-        }
-    }
-}
-
-static const struct wl_data_device_listener dataDeviceListener = {
-    dataDeviceHandleDataOffer,
-    dataDeviceHandleEnter,
-    dataDeviceHandleLeave,
-    dataDeviceHandleMotion,
-    dataDeviceHandleDrop,
-    dataDeviceHandleSelection,
-};
-
 static void wmBaseHandlePing(void* userData,
                              struct xdg_wm_base* wmBase,
                              uint32_t serial)
@@ -861,7 +101,7 @@ static void registryHandleGlobal(void* userData,
             _glfw.wl.seat =
                 wl_registry_bind(registry, name, &wl_seat_interface,
                                  _glfw.wl.seatVersion);
-            wl_seat_add_listener(_glfw.wl.seat, &seatListener, NULL);
+            _glfwAddSeatListenerWayland(_glfw.wl.seat);
         }
     }
     else if (strcmp(interface, "wl_data_device_manager") == 0)
@@ -1412,7 +652,7 @@ int _glfwInitWayland(void)
         _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);
+        _glfwAddDataDeviceListenerWayland(_glfw.wl.dataDevice);
     }
 
     return GLFW_TRUE;

src/wl_platform.h

@@ -506,3 +506,6 @@ void _glfwSetGammaRampWayland(_GLFWmonitor* monitor, const GLFWgammaramp* ramp);
 void _glfwAddOutputWayland(uint32_t name, uint32_t version);
 GLFWbool _glfwInputTextWayland(_GLFWwindow* window, uint32_t scancode);
 
+void _glfwAddSeatListenerWayland(struct wl_seat* seat);
+void _glfwAddDataDeviceListenerWayland(struct wl_data_device* device);
+

src/wl_window.c

@@ -33,6 +33,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <errno.h>
+#include <assert.h>
 #include <unistd.h>
 #include <string.h>
 #include <fcntl.h>
@@ -811,6 +812,775 @@ static void handleEvents(double* timeout)
     }
 }
 
+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* userData,
+                               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.pointerEnterSerial = serial;
+    _glfw.wl.pointerFocus = window;
+
+    window->wl.hovered = GLFW_TRUE;
+
+    _glfwSetCursorWayland(window, window->wl.currentCursor);
+    _glfwInputCursorEnter(window, GLFW_TRUE);
+}
+
+static void pointerHandleLeave(void* userData,
+                               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);
+    _glfw.wl.cursorPreviousName = NULL;
+}
+
+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_CURSOR_UNAVAILABLE,
+                        "Wayland: Standard cursor shape unavailable");
+        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.pointerEnterSerial,
+                          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);
+    _glfw.wl.cursorPreviousName = name;
+}
+
+static void pointerHandleMotion(void* userData,
+                                struct wl_pointer* pointer,
+                                uint32_t time,
+                                wl_fixed_t sx,
+                                wl_fixed_t sy)
+{
+    _GLFWwindow* window = _glfw.wl.pointerFocus;
+    const char* cursorName = NULL;
+    double x, y;
+
+    if (!window)
+        return;
+
+    if (window->cursorMode == GLFW_CURSOR_DISABLED)
+        return;
+    x = wl_fixed_to_double(sx);
+    y = wl_fixed_to_double(sy);
+    window->wl.cursorPosX = x;
+    window->wl.cursorPosY = y;
+
+    switch (window->wl.decorations.focus)
+    {
+        case mainWindow:
+            _glfwInputCursorPos(window, x, y);
+            _glfw.wl.cursorPreviousName = NULL;
+            return;
+        case topDecoration:
+            if (y < _GLFW_DECORATION_WIDTH)
+                cursorName = "n-resize";
+            else
+                cursorName = "left_ptr";
+            break;
+        case leftDecoration:
+            if (y < _GLFW_DECORATION_WIDTH)
+                cursorName = "nw-resize";
+            else
+                cursorName = "w-resize";
+            break;
+        case rightDecoration:
+            if (y < _GLFW_DECORATION_WIDTH)
+                cursorName = "ne-resize";
+            else
+                cursorName = "e-resize";
+            break;
+        case bottomDecoration:
+            if (x < _GLFW_DECORATION_WIDTH)
+                cursorName = "sw-resize";
+            else if (x > window->wl.width + _GLFW_DECORATION_WIDTH)
+                cursorName = "se-resize";
+            else
+                cursorName = "s-resize";
+            break;
+        default:
+            assert(0);
+    }
+    if (_glfw.wl.cursorPreviousName != cursorName)
+        setCursor(window, cursorName);
+}
+
+static void pointerHandleButton(void* userData,
+                                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);
+            return;
+        }
+    }
+    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* userData,
+                              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* userData,
+                                 struct wl_keyboard* keyboard,
+                                 uint32_t format,
+                                 int fd,
+                                 uint32_t size)
+{
+    struct xkb_keymap* keymap;
+    struct xkb_state* state;
+    struct xkb_compose_table* composeTable;
+    struct xkb_compose_state* composeState;
+
+    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";
+
+    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");
+    }
+
+    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* userData,
+                                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* userData,
+                                struct wl_keyboard* keyboard,
+                                uint32_t serial,
+                                struct wl_surface* surface)
+{
+    _GLFWwindow* window = _glfw.wl.keyboardFocus;
+
+    if (!window)
+        return;
+
+    struct itimerspec timer = {};
+    timerfd_settime(_glfw.wl.timerfd, 0, &timer, NULL);
+
+    _glfw.wl.serial = serial;
+    _glfw.wl.keyboardFocus = NULL;
+    _glfwInputWindowFocus(window, GLFW_FALSE);
+}
+
+static int translateKey(uint32_t scancode)
+{
+    if (scancode < sizeof(_glfw.wl.keycodes) / sizeof(_glfw.wl.keycodes[0]))
+        return _glfw.wl.keycodes[scancode];
+
+    return GLFW_KEY_UNKNOWN;
+}
+
+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;
+    }
+}
+
+GLFWbool _glfwInputTextWayland(_GLFWwindow* window, uint32_t scancode)
+{
+    const xkb_keysym_t* keysyms;
+    const xkb_keycode_t keycode = scancode + 8;
+
+    if (xkb_state_key_get_syms(_glfw.wl.xkb.state, keycode, &keysyms) == 1)
+    {
+        const xkb_keysym_t keysym = composeSymbol(keysyms[0]);
+        const uint32_t codepoint = _glfwKeySym2Unicode(keysym);
+        if (codepoint != GLFW_INVALID_CODEPOINT)
+        {
+            const int mods = _glfw.wl.xkb.modifiers;
+            const int plain = !(mods & (GLFW_MOD_CONTROL | GLFW_MOD_ALT));
+            _glfwInputChar(window, codepoint, mods, plain);
+        }
+    }
+
+    return xkb_keymap_key_repeats(_glfw.wl.xkb.keymap, keycode);
+}
+
+static void keyboardHandleKey(void* userData,
+                              struct wl_keyboard* keyboard,
+                              uint32_t serial,
+                              uint32_t time,
+                              uint32_t scancode,
+                              uint32_t state)
+{
+    _GLFWwindow* window = _glfw.wl.keyboardFocus;
+    if (!window)
+        return;
+
+    const int key = translateKey(scancode);
+    const int action =
+        state == WL_KEYBOARD_KEY_STATE_PRESSED ? GLFW_PRESS : GLFW_RELEASE;
+
+    _glfw.wl.serial = serial;
+    _glfwInputKey(window, key, scancode, action, _glfw.wl.xkb.modifiers);
+
+    struct itimerspec timer = {};
+
+    if (action == GLFW_PRESS)
+    {
+        const GLFWbool shouldRepeat = _glfwInputTextWayland(window, scancode);
+
+        if (shouldRepeat && _glfw.wl.keyboardRepeatRate > 0)
+        {
+            _glfw.wl.keyboardLastKey = key;
+            _glfw.wl.keyboardLastScancode = scancode;
+            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* userData,
+                                    struct wl_keyboard* keyboard,
+                                    uint32_t serial,
+                                    uint32_t modsDepressed,
+                                    uint32_t modsLatched,
+                                    uint32_t modsLocked,
+                                    uint32_t group)
+{
+    _glfw.wl.serial = serial;
+
+    if (!_glfw.wl.xkb.keymap)
+        return;
+
+    xkb_state_update_mask(_glfw.wl.xkb.state,
+                          modsDepressed,
+                          modsLatched,
+                          modsLocked,
+                          0,
+                          0,
+                          group);
+
+    const xkb_mod_mask_t 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);
+
+    unsigned int mods = 0;
+
+    if (mask & _glfw.wl.xkb.controlMask)
+        mods |= GLFW_MOD_CONTROL;
+    if (mask & _glfw.wl.xkb.altMask)
+        mods |= GLFW_MOD_ALT;
+    if (mask & _glfw.wl.xkb.shiftMask)
+        mods |= GLFW_MOD_SHIFT;
+    if (mask & _glfw.wl.xkb.superMask)
+        mods |= GLFW_MOD_SUPER;
+    if (mask & _glfw.wl.xkb.capsLockMask)
+        mods |= GLFW_MOD_CAPS_LOCK;
+    if (mask & _glfw.wl.xkb.numLockMask)
+        mods |= GLFW_MOD_NUM_LOCK;
+
+    _glfw.wl.xkb.modifiers = mods;
+}
+
+#ifdef WL_KEYBOARD_REPEAT_INFO_SINCE_VERSION
+static void keyboardHandleRepeatInfo(void* userData,
+                                     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* userData,
+                                   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* userData,
+                           struct wl_seat* seat,
+                           const char* name)
+{
+}
+
+static const struct wl_seat_listener seatListener = {
+    seatHandleCapabilities,
+    seatHandleName,
+};
+
+static void dataOfferHandleOffer(void* userData,
+                                 struct wl_data_offer* offer,
+                                 const char* mimeType)
+{
+    for (unsigned int i = 0; i < _glfw.wl.offerCount; i++)
+    {
+        if (_glfw.wl.offers[i].offer == offer)
+        {
+            if (strcmp(mimeType, "text/plain;charset=utf-8") == 0)
+                _glfw.wl.offers[i].text_plain_utf8 = GLFW_TRUE;
+
+            break;
+        }
+    }
+}
+
+static const struct wl_data_offer_listener dataOfferListener = {
+    dataOfferHandleOffer
+};
+
+static void dataDeviceHandleDataOffer(void* userData,
+                                      struct wl_data_device* device,
+                                      struct wl_data_offer* offer)
+{
+    _GLFWofferWayland* offers =
+        _glfw_realloc(_glfw.wl.offers, _glfw.wl.offerCount + 1);
+    if (!offers)
+    {
+        _glfwInputError(GLFW_OUT_OF_MEMORY, NULL);
+        return;
+    }
+
+    _glfw.wl.offers = offers;
+    _glfw.wl.offerCount++;
+
+    _glfw.wl.offers[_glfw.wl.offerCount - 1] = (_GLFWofferWayland) { offer };
+    wl_data_offer_add_listener(offer, &dataOfferListener, NULL);
+}
+
+static void dataDeviceHandleEnter(void* userData,
+                                  struct wl_data_device* device,
+                                  uint32_t serial,
+                                  struct wl_surface* surface,
+                                  wl_fixed_t x,
+                                  wl_fixed_t y,
+                                  struct wl_data_offer* offer)
+{
+    for (unsigned int i = 0; i < _glfw.wl.offerCount; i++)
+    {
+        if (_glfw.wl.offers[i].offer == offer)
+        {
+            _glfw.wl.offers[i] = _glfw.wl.offers[_glfw.wl.offerCount - 1];
+            _glfw.wl.offerCount--;
+
+            // We don't yet handle drag and drop
+            wl_data_offer_accept(offer, serial, NULL);
+            wl_data_offer_destroy(offer);
+            break;
+        }
+    }
+}
+
+static void dataDeviceHandleLeave(void* userData,
+                                  struct wl_data_device* device)
+{
+}
+
+static void dataDeviceHandleMotion(void* userData,
+                                   struct wl_data_device* device,
+                                   uint32_t time,
+                                   wl_fixed_t x,
+                                   wl_fixed_t y)
+{
+}
+
+static void dataDeviceHandleDrop(void* userData,
+                                 struct wl_data_device* device)
+{
+}
+
+static void dataDeviceHandleSelection(void* userData,
+                                      struct wl_data_device* device,
+                                      struct wl_data_offer* offer)
+{
+    if (_glfw.wl.selectionOffer)
+    {
+        wl_data_offer_destroy(_glfw.wl.selectionOffer);
+        _glfw.wl.selectionOffer = NULL;
+    }
+
+    for (unsigned int i = 0; i < _glfw.wl.offerCount; i++)
+    {
+        if (_glfw.wl.offers[i].offer == offer)
+        {
+            if (_glfw.wl.offers[i].text_plain_utf8)
+                _glfw.wl.selectionOffer = offer;
+            else
+                wl_data_offer_destroy(offer);
+
+            _glfw.wl.offers[i] = _glfw.wl.offers[_glfw.wl.offerCount - 1];
+            _glfw.wl.offerCount--;
+            break;
+        }
+    }
+}
+
+const struct wl_data_device_listener dataDeviceListener = {
+    dataDeviceHandleDataOffer,
+    dataDeviceHandleEnter,
+    dataDeviceHandleLeave,
+    dataDeviceHandleMotion,
+    dataDeviceHandleDrop,
+    dataDeviceHandleSelection,
+};
+
+void _glfwAddSeatListenerWayland(struct wl_seat* seat)
+{
+    wl_seat_add_listener(seat, &seatListener, NULL);
+}
+
+void _glfwAddDataDeviceListenerWayland(struct wl_data_device* device)
+{
+    wl_data_device_add_listener(device, &dataDeviceListener, NULL);
+}
+
+
 //////////////////////////////////////////////////////////////////////////
 //////                       GLFW platform API                      //////
 //////////////////////////////////////////////////////////////////////////