1 files changed, 3408 insertions, 0 deletions

diff --git a/contrib/SDL-3.2.8/src/video/wayland/SDL_waylandevents.c b/contrib/SDL-3.2.8/src/video/wayland/SDL_waylandevents.c
new file mode 100644
index 0000000..83c414f
--- /dev/null
+++ b/contrib/SDL-3.2.8/src/video/wayland/SDL_waylandevents.c
@@ -0,0 +1,3408 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2025 Sam Lantinga <slouken@libsdl.org>
+
+  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.
+*/
+
+#include "SDL_internal.h"
+
+#ifdef SDL_VIDEO_DRIVER_WAYLAND
+
+#include "../../core/unix/SDL_poll.h"
+#include "../../events/SDL_events_c.h"
+#include "../../events/SDL_scancode_tables_c.h"
+#include "../../events/SDL_keysym_to_keycode_c.h"
+#include "../../core/linux/SDL_system_theme.h"
+#include "../SDL_sysvideo.h"
+
+#include "SDL_waylandvideo.h"
+#include "SDL_waylandevents_c.h"
+#include "SDL_waylandwindow.h"
+#include "SDL_waylandmouse.h"
+
+#include "pointer-constraints-unstable-v1-client-protocol.h"
+#include "relative-pointer-unstable-v1-client-protocol.h"
+#include "xdg-shell-client-protocol.h"
+#include "keyboard-shortcuts-inhibit-unstable-v1-client-protocol.h"
+#include "text-input-unstable-v3-client-protocol.h"
+#include "tablet-v2-client-protocol.h"
+#include "primary-selection-unstable-v1-client-protocol.h"
+#include "input-timestamps-unstable-v1-client-protocol.h"
+
+#ifdef HAVE_LIBDECOR_H
+#include <libdecor.h>
+#endif
+
+#ifdef SDL_INPUT_LINUXEV
+#include <linux/input.h>
+#else
+#define BTN_LEFT   (0x110)
+#define BTN_RIGHT  (0x111)
+#define BTN_MIDDLE (0x112)
+#define BTN_SIDE   (0x113)
+#define BTN_EXTRA  (0x114)
+#endif
+#include "../../events/SDL_keysym_to_scancode_c.h"
+#include "../../events/imKStoUCS.h"
+#include <errno.h>
+#include <sys/mman.h>
+#include <unistd.h>
+#include <xkbcommon/xkbcommon-compose.h>
+#include <xkbcommon/xkbcommon.h>
+#include "cursor-shape-v1-client-protocol.h"
+
+// Weston uses a ratio of 10 units per scroll tick
+#define WAYLAND_WHEEL_AXIS_UNIT 10
+
+#ifndef XKB_MOD_NAME_MOD3
+#define XKB_MOD_NAME_MOD3 "Mod3"
+#endif
+
+#ifndef XKB_MOD_NAME_MOD5
+#define XKB_MOD_NAME_MOD5 "Mod5"
+#endif
+
+// Keyboard and mouse names to match XWayland
+#define WAYLAND_DEFAULT_KEYBOARD_NAME "Virtual core keyboard"
+#define WAYLAND_DEFAULT_POINTER_NAME "Virtual core pointer"
+
+// Focus clickthrough timeout
+#define WAYLAND_FOCUS_CLICK_TIMEOUT_NS SDL_MS_TO_NS(10)
+
+struct SDL_WaylandTouchPoint
+{
+    SDL_TouchID id;
+    wl_fixed_t fx;
+    wl_fixed_t fy;
+    struct wl_surface *surface;
+
+    struct wl_list link;
+};
+
+static struct wl_list touch_points;
+
+static void touch_add(SDL_TouchID id, wl_fixed_t fx, wl_fixed_t fy, struct wl_surface *surface)
+{
+    struct SDL_WaylandTouchPoint *tp = SDL_malloc(sizeof(struct SDL_WaylandTouchPoint));
+
+    SDL_zerop(tp);
+    tp->id = id;
+    tp->fx = fx;
+    tp->fy = fy;
+    tp->surface = surface;
+
+    WAYLAND_wl_list_insert(&touch_points, &tp->link);
+}
+
+static void touch_update(SDL_TouchID id, wl_fixed_t fx, wl_fixed_t fy, struct wl_surface **surface)
+{
+    struct SDL_WaylandTouchPoint *tp;
+
+    wl_list_for_each (tp, &touch_points, link) {
+        if (tp->id == id) {
+            tp->fx = fx;
+            tp->fy = fy;
+            if (surface) {
+                *surface = tp->surface;
+            }
+            break;
+        }
+    }
+}
+
+static void touch_del(SDL_TouchID id, wl_fixed_t *fx, wl_fixed_t *fy, struct wl_surface **surface)
+{
+    struct SDL_WaylandTouchPoint *tp;
+
+    wl_list_for_each (tp, &touch_points, link) {
+        if (tp->id == id) {
+            if (fx) {
+                *fx = tp->fx;
+            }
+            if (fy) {
+                *fy = tp->fy;
+            }
+            if (surface) {
+                *surface = tp->surface;
+            }
+
+            WAYLAND_wl_list_remove(&tp->link);
+            SDL_free(tp);
+            break;
+        }
+    }
+}
+
+static bool Wayland_SurfaceHasActiveTouches(struct wl_surface *surface)
+{
+    struct SDL_WaylandTouchPoint *tp;
+
+    wl_list_for_each (tp, &touch_points, link) {
+        if (tp->surface == surface) {
+            return true;
+        }
+    }
+
+    return false;
+}
+
+static Uint64 Wayland_GetEventTimestamp(Uint64 nsTimestamp)
+{
+    static Uint64 last;
+    static Uint64 timestamp_offset;
+    const Uint64 now = SDL_GetTicksNS();
+
+    if (nsTimestamp < last) {
+        // 32-bit timer rollover, bump the offset
+        timestamp_offset += SDL_MS_TO_NS(0x100000000LLU);
+    }
+    last = nsTimestamp;
+
+    if (!timestamp_offset) {
+        timestamp_offset = (now - nsTimestamp);
+    }
+    nsTimestamp += timestamp_offset;
+
+    if (nsTimestamp > now) {
+        timestamp_offset -= (nsTimestamp - now);
+        nsTimestamp = now;
+    }
+
+    return nsTimestamp;
+}
+
+static void Wayland_input_timestamp_listener(void *data, struct zwp_input_timestamps_v1 *zwp_input_timestamps_v1,
+                                             uint32_t tv_sec_hi, uint32_t tv_sec_lo, uint32_t tv_nsec)
+{
+    *((Uint64 *)data) = ((((Uint64)tv_sec_hi << 32) | (Uint64)tv_sec_lo) * SDL_NS_PER_SECOND) + tv_nsec;
+}
+
+static const struct zwp_input_timestamps_v1_listener timestamp_listener = {
+    Wayland_input_timestamp_listener
+};
+
+static Uint64 Wayland_GetKeyboardTimestamp(struct SDL_WaylandInput *input, Uint32 wl_timestamp_ms)
+{
+    if (wl_timestamp_ms) {
+        return Wayland_GetEventTimestamp(input->keyboard_timestamp_ns ? input->keyboard_timestamp_ns : SDL_MS_TO_NS(wl_timestamp_ms));
+    }
+
+    return 0;
+}
+
+static Uint64 Wayland_GetKeyboardTimestampRaw(struct SDL_WaylandInput *input, Uint32 wl_timestamp_ms)
+{
+    if (wl_timestamp_ms) {
+        return input->keyboard_timestamp_ns ? input->keyboard_timestamp_ns : SDL_MS_TO_NS(wl_timestamp_ms);
+    }
+
+    return 0;
+}
+
+static Uint64 Wayland_GetPointerTimestamp(struct SDL_WaylandInput *input, Uint32 wl_timestamp_ms)
+{
+    if (wl_timestamp_ms) {
+        return Wayland_GetEventTimestamp(input->pointer_timestamp_ns ? input->pointer_timestamp_ns : SDL_MS_TO_NS(wl_timestamp_ms));
+    }
+
+    return 0;
+}
+
+Uint64 Wayland_GetTouchTimestamp(struct SDL_WaylandInput *input, Uint32 wl_timestamp_ms)
+{
+    if (wl_timestamp_ms) {
+        return Wayland_GetEventTimestamp(input->touch_timestamp_ns ? input->touch_timestamp_ns : SDL_MS_TO_NS(wl_timestamp_ms));
+    }
+
+    return 0;
+}
+
+void Wayland_RegisterTimestampListeners(struct SDL_WaylandInput *input)
+{
+    SDL_VideoData *viddata = input->display;
+
+    if (viddata->input_timestamps_manager) {
+        if (input->keyboard && !input->keyboard_timestamps) {
+            input->keyboard_timestamps = zwp_input_timestamps_manager_v1_get_keyboard_timestamps(viddata->input_timestamps_manager, input->keyboard);
+            zwp_input_timestamps_v1_add_listener(input->keyboard_timestamps, &timestamp_listener, &input->keyboard_timestamp_ns);
+        }
+
+        if (input->pointer && !input->pointer_timestamps) {
+            input->pointer_timestamps = zwp_input_timestamps_manager_v1_get_pointer_timestamps(viddata->input_timestamps_manager, input->pointer);
+            zwp_input_timestamps_v1_add_listener(input->pointer_timestamps, &timestamp_listener, &input->pointer_timestamp_ns);
+        }
+
+        if (input->touch && !input->touch_timestamps) {
+            input->touch_timestamps = zwp_input_timestamps_manager_v1_get_touch_timestamps(viddata->input_timestamps_manager, input->touch);
+            zwp_input_timestamps_v1_add_listener(input->touch_timestamps, &timestamp_listener, &input->touch_timestamp_ns);
+        }
+    }
+}
+
+void Wayland_CreateCursorShapeDevice(struct SDL_WaylandInput *input)
+{
+    SDL_VideoData *viddata = input->display;
+
+    if (viddata->cursor_shape_manager) {
+        if (input->pointer && !input->cursor_shape) {
+            input->cursor_shape = wp_cursor_shape_manager_v1_get_pointer(viddata->cursor_shape_manager, input->pointer);
+        }
+    }
+}
+
+// Returns true if a key repeat event was due
+static bool keyboard_repeat_handle(SDL_WaylandKeyboardRepeat *repeat_info, Uint64 elapsed)
+{
+    bool ret = false;
+    while (elapsed >= repeat_info->next_repeat_ns) {
+        if (repeat_info->scancode != SDL_SCANCODE_UNKNOWN) {
+            const Uint64 timestamp = repeat_info->wl_press_time_ns + repeat_info->next_repeat_ns;
+            SDL_SendKeyboardKeyIgnoreModifiers(Wayland_GetEventTimestamp(timestamp), repeat_info->keyboard_id, repeat_info->key, repeat_info->scancode, true);
+        }
+        if (repeat_info->text[0]) {
+            SDL_SendKeyboardText(repeat_info->text);
+        }
+        repeat_info->next_repeat_ns += SDL_NS_PER_SECOND / (Uint64)repeat_info->repeat_rate;
+        ret = true;
+    }
+    return ret;
+}
+
+static void keyboard_repeat_clear(SDL_WaylandKeyboardRepeat *repeat_info)
+{
+    if (!repeat_info->is_initialized) {
+        return;
+    }
+    repeat_info->is_key_down = false;
+}
+
+static void keyboard_repeat_set(SDL_WaylandKeyboardRepeat *repeat_info, Uint32 keyboard_id, uint32_t key, Uint64 wl_press_time_ns,
+                                uint32_t scancode, bool has_text, char text[8])
+{
+    if (!repeat_info->is_initialized || !repeat_info->repeat_rate) {
+        return;
+    }
+    repeat_info->is_key_down = true;
+    repeat_info->keyboard_id = keyboard_id;
+    repeat_info->key = key;
+    repeat_info->wl_press_time_ns = wl_press_time_ns;
+    repeat_info->sdl_press_time_ns = SDL_GetTicksNS();
+    repeat_info->next_repeat_ns = SDL_MS_TO_NS(repeat_info->repeat_delay_ms);
+    repeat_info->scancode = scancode;
+    if (has_text) {
+        SDL_copyp(repeat_info->text, text);
+    } else {
+        repeat_info->text[0] = '\0';
+    }
+}
+
+static uint32_t keyboard_repeat_get_key(SDL_WaylandKeyboardRepeat *repeat_info)
+{
+    if (repeat_info->is_initialized && repeat_info->is_key_down) {
+        return repeat_info->key;
+    }
+
+    return 0;
+}
+
+static void keyboard_repeat_set_text(SDL_WaylandKeyboardRepeat *repeat_info, const char text[8])
+{
+    if (repeat_info->is_initialized) {
+        SDL_copyp(repeat_info->text, text);
+    }
+}
+
+static bool keyboard_repeat_is_set(SDL_WaylandKeyboardRepeat *repeat_info)
+{
+    return repeat_info->is_initialized && repeat_info->is_key_down;
+}
+
+static bool keyboard_repeat_key_is_set(SDL_WaylandKeyboardRepeat *repeat_info, uint32_t key)
+{
+    return repeat_info->is_initialized && repeat_info->is_key_down && key == repeat_info->key;
+}
+
+static void sync_done_handler(void *data, struct wl_callback *callback, uint32_t callback_data)
+{
+    // Nothing to do, just destroy the callback
+    wl_callback_destroy(callback);
+}
+
+static struct wl_callback_listener sync_listener = {
+    sync_done_handler
+};
+
+void Wayland_SendWakeupEvent(SDL_VideoDevice *_this, SDL_Window *window)
+{
+    SDL_VideoData *d = _this->internal;
+
+    /* Queue a sync event to unblock the event queue fd if it's empty and being waited on.
+     * TODO: Maybe use a pipe to avoid the compositor roundtrip?
+     */
+    struct wl_callback *cb = wl_display_sync(d->display);
+    wl_callback_add_listener(cb, &sync_listener, NULL);
+    WAYLAND_wl_display_flush(d->display);
+}
+
+static int dispatch_queued_events(SDL_VideoData *viddata)
+{
+    int rc;
+
+    /*
+     * NOTE: When reconnection is implemented, check if libdecor needs to be
+     *       involved in the reconnection process.
+     */
+#ifdef HAVE_LIBDECOR_H
+    if (viddata->shell.libdecor) {
+        libdecor_dispatch(viddata->shell.libdecor, 0);
+    }
+#endif
+
+    rc = WAYLAND_wl_display_dispatch_pending(viddata->display);
+    return rc >= 0 ? 1 : rc;
+}
+
+int Wayland_WaitEventTimeout(SDL_VideoDevice *_this, Sint64 timeoutNS)
+{
+    SDL_VideoData *d = _this->internal;
+    struct SDL_WaylandInput *input = d->input;
+    bool key_repeat_active = false;
+
+    WAYLAND_wl_display_flush(d->display);
+
+#ifdef SDL_USE_IME
+    SDL_Window *keyboard_focus = SDL_GetKeyboardFocus();
+    if (!d->text_input_manager && keyboard_focus && SDL_TextInputActive(keyboard_focus)) {
+        SDL_IME_PumpEvents();
+    }
+#endif
+
+#ifdef SDL_USE_LIBDBUS
+    SDL_DBus_PumpEvents();
+#endif
+
+    // If key repeat is active, we'll need to cap our maximum wait time to handle repeats
+    if (input && keyboard_repeat_is_set(&input->keyboard_repeat)) {
+        const Uint64 elapsed = SDL_GetTicksNS() - input->keyboard_repeat.sdl_press_time_ns;
+        if (keyboard_repeat_handle(&input->keyboard_repeat, elapsed)) {
+            // A repeat key event was already due
+            return 1;
+        } else {
+            const Uint64 next_repeat_wait_time = (input->keyboard_repeat.next_repeat_ns - elapsed) + 1;
+            if (timeoutNS >= 0) {
+                timeoutNS = SDL_min(timeoutNS, next_repeat_wait_time);
+            } else {
+                timeoutNS = next_repeat_wait_time;
+            }
+            key_repeat_active = true;
+        }
+    }
+
+    /* wl_display_prepare_read() will return -1 if the default queue is not empty.
+     * If the default queue is empty, it will prepare us for our SDL_IOReady() call. */
+    if (WAYLAND_wl_display_prepare_read(d->display) == 0) {
+        // Use SDL_IOR_NO_RETRY to ensure SIGINT will break us out of our wait
+        int err = SDL_IOReady(WAYLAND_wl_display_get_fd(d->display), SDL_IOR_READ | SDL_IOR_NO_RETRY, timeoutNS);
+        if (err > 0) {
+            // There are new events available to read
+            WAYLAND_wl_display_read_events(d->display);
+            return dispatch_queued_events(d);
+        } else if (err == 0) {
+            // No events available within the timeout
+            WAYLAND_wl_display_cancel_read(d->display);
+
+            // If key repeat is active, we might have woken up to generate a key event
+            if (key_repeat_active) {
+                const Uint64 elapsed = SDL_GetTicksNS() - input->keyboard_repeat.sdl_press_time_ns;
+                if (keyboard_repeat_handle(&input->keyboard_repeat, elapsed)) {
+                    return 1;
+                }
+            }
+
+            return 0;
+        } else {
+            // Error returned from poll()/select()
+            WAYLAND_wl_display_cancel_read(d->display);
+
+            if (errno == EINTR) {
+                /* If the wait was interrupted by a signal, we may have generated a
+                 * SDL_EVENT_QUIT event. Let the caller know to call SDL_PumpEvents(). */
+                return 1;
+            } else {
+                return err;
+            }
+        }
+    } else {
+        // We already had pending events
+        return dispatch_queued_events(d);
+    }
+}
+
+void Wayland_PumpEvents(SDL_VideoDevice *_this)
+{
+    SDL_VideoData *d = _this->internal;
+    struct SDL_WaylandInput *input = d->input;
+    int err;
+
+#ifdef SDL_USE_IME
+    SDL_Window *keyboard_focus = SDL_GetKeyboardFocus();
+    if (!d->text_input_manager && keyboard_focus && SDL_TextInputActive(keyboard_focus)) {
+        SDL_IME_PumpEvents();
+    }
+#endif
+
+#ifdef SDL_USE_LIBDBUS
+    SDL_DBus_PumpEvents();
+#endif
+
+#ifdef HAVE_LIBDECOR_H
+    if (d->shell.libdecor) {
+        libdecor_dispatch(d->shell.libdecor, 0);
+    }
+#endif
+
+    WAYLAND_wl_display_flush(d->display);
+
+    /* wl_display_prepare_read() will return -1 if the default queue is not empty.
+     * If the default queue is empty, it will prepare us for our SDL_IOReady() call. */
+    if (WAYLAND_wl_display_prepare_read(d->display) == 0) {
+        if (SDL_IOReady(WAYLAND_wl_display_get_fd(d->display), SDL_IOR_READ, 0) > 0) {
+            WAYLAND_wl_display_read_events(d->display);
+        } else {
+            WAYLAND_wl_display_cancel_read(d->display);
+        }
+    }
+
+    // Dispatch any pre-existing pending events or new events we may have read
+    err = WAYLAND_wl_display_dispatch_pending(d->display);
+
+    if (input && keyboard_repeat_is_set(&input->keyboard_repeat)) {
+        const Uint64 elapsed = SDL_GetTicksNS() - input->keyboard_repeat.sdl_press_time_ns;
+        keyboard_repeat_handle(&input->keyboard_repeat, elapsed);
+    }
+
+    if (err < 0 && !d->display_disconnected) {
+        /* Something has failed with the Wayland connection -- for example,
+         * the compositor may have shut down and closed its end of the socket,
+         * or there is a library-specific error.
+         *
+         * Try to recover once, then quit.
+         */
+        if (!Wayland_VideoReconnect(_this)) {
+            d->display_disconnected = 1;
+            SDL_LogError(SDL_LOG_CATEGORY_VIDEO, "Wayland display connection closed by server (fatal)");
+
+            /* Only send a single quit message, as application shutdown might call
+             * SDL_PumpEvents
+             */
+            SDL_SendQuit();
+        }
+    }
+}
+
+static void pointer_handle_motion(void *data, struct wl_pointer *pointer,
+                                  uint32_t time, wl_fixed_t sx_w, wl_fixed_t sy_w)
+{
+    struct SDL_WaylandInput *input = data;
+    SDL_WindowData *window_data = input->pointer_focus;
+    SDL_Window *window = window_data ? window_data->sdlwindow : NULL;
+
+    input->sx_w = sx_w;
+    input->sy_w = sy_w;
+    if (input->pointer_focus) {
+        const float sx = (float)(wl_fixed_to_double(sx_w) * window_data->pointer_scale.x);
+        const float sy = (float)(wl_fixed_to_double(sy_w) * window_data->pointer_scale.y);
+        SDL_SendMouseMotion(Wayland_GetPointerTimestamp(input, time), window_data->sdlwindow, input->pointer_id, false, sx, sy);
+    }
+
+    if (window && window->hit_test) {
+        const SDL_Point point = { (int)SDL_floor(wl_fixed_to_double(sx_w) * window_data->pointer_scale.x),
+                                  (int)SDL_floor(wl_fixed_to_double(sy_w) * window_data->pointer_scale.y) };
+        SDL_HitTestResult rc = window->hit_test(window, &point, window->hit_test_data);
+        if (rc == window_data->hit_test_result) {
+            return;
+        }
+
+        Wayland_SetHitTestCursor(rc);
+        window_data->hit_test_result = rc;
+    }
+}
+
+static void pointer_handle_enter(void *data, struct wl_pointer *pointer,
+                                 uint32_t serial, struct wl_surface *surface,
+                                 wl_fixed_t sx_w, wl_fixed_t sy_w)
+{
+    struct SDL_WaylandInput *input = data;
+    SDL_WindowData *window;
+
+    if (!surface) {
+        // enter event for a window we've just destroyed
+        return;
+    }
+
+    /* This handler will be called twice in Wayland 1.4
+     * Once for the window surface which has valid user data
+     * and again for the mouse cursor surface which does not have valid user data
+     * We ignore the later
+     */
+    window = Wayland_GetWindowDataForOwnedSurface(surface);
+
+    if (window) {
+        input->pointer_focus = window;
+        input->pointer_enter_serial = serial;
+        SDL_SetMouseFocus(window->sdlwindow);
+        /* In the case of e.g. a pointer confine warp, we may receive an enter
+         * event with no following motion event, but with the new coordinates
+         * as part of the enter event.
+         *
+         * FIXME: This causes a movement event with an anomalous timestamp when
+         *        the cursor enters the window.
+         */
+        pointer_handle_motion(data, pointer, 0, sx_w, sy_w);
+        /* If the cursor was changed while our window didn't have pointer
+         * focus, we might need to trigger another call to
+         * wl_pointer_set_cursor() for the new cursor to be displayed. */
+        Wayland_SetHitTestCursor(window->hit_test_result);
+    }
+}
+
+static void pointer_handle_leave(void *data, struct wl_pointer *pointer,
+                                 uint32_t serial, struct wl_surface *surface)
+{
+    struct SDL_WaylandInput *input = data;
+
+    if (!surface) {
+        return;
+    }
+
+    if (input->pointer_focus) {
+        SDL_WindowData *wind = Wayland_GetWindowDataForOwnedSurface(surface);
+
+        if (wind) {
+            // Clear the capture flag and raise all buttons
+            wind->sdlwindow->flags &= ~SDL_WINDOW_MOUSE_CAPTURE;
+
+            input->buttons_pressed = 0;
+            SDL_SendMouseButton(Wayland_GetPointerTimestamp(input, 0), wind->sdlwindow, input->pointer_id, SDL_BUTTON_LEFT, false);
+            SDL_SendMouseButton(Wayland_GetPointerTimestamp(input, 0), wind->sdlwindow, input->pointer_id, SDL_BUTTON_RIGHT, false);
+            SDL_SendMouseButton(Wayland_GetPointerTimestamp(input, 0), wind->sdlwindow, input->pointer_id, SDL_BUTTON_MIDDLE, false);
+            SDL_SendMouseButton(Wayland_GetPointerTimestamp(input, 0), wind->sdlwindow, input->pointer_id, SDL_BUTTON_X1, false);
+            SDL_SendMouseButton(Wayland_GetPointerTimestamp(input, 0), wind->sdlwindow, input->pointer_id, SDL_BUTTON_X2, false);
+        }
+
+        /* A pointer leave event may be emitted if the compositor hides the pointer in response to receiving a touch event.
+         * Don't relinquish focus if the surface has active touches, as the compositor is just transitioning from mouse to touch mode.
+         */
+        if (!Wayland_SurfaceHasActiveTouches(surface)) {
+            SDL_SetMouseFocus(NULL);
+        }
+        input->pointer_focus = NULL;
+    }
+}
+
+static bool ProcessHitTest(SDL_WindowData *window_data,
+                               struct wl_seat *seat,
+                               wl_fixed_t sx_w, wl_fixed_t sy_w,
+                               uint32_t serial)
+{
+    SDL_Window *window = window_data->sdlwindow;
+
+    if (window->hit_test) {
+        static const uint32_t directions[] = {
+            XDG_TOPLEVEL_RESIZE_EDGE_TOP_LEFT, XDG_TOPLEVEL_RESIZE_EDGE_TOP,
+            XDG_TOPLEVEL_RESIZE_EDGE_TOP_RIGHT, XDG_TOPLEVEL_RESIZE_EDGE_RIGHT,
+            XDG_TOPLEVEL_RESIZE_EDGE_BOTTOM_RIGHT, XDG_TOPLEVEL_RESIZE_EDGE_BOTTOM,
+            XDG_TOPLEVEL_RESIZE_EDGE_BOTTOM_LEFT, XDG_TOPLEVEL_RESIZE_EDGE_LEFT
+        };
+
+#ifdef HAVE_LIBDECOR_H
+        static const uint32_t directions_libdecor[] = {
+            LIBDECOR_RESIZE_EDGE_TOP_LEFT, LIBDECOR_RESIZE_EDGE_TOP,
+            LIBDECOR_RESIZE_EDGE_TOP_RIGHT, LIBDECOR_RESIZE_EDGE_RIGHT,
+            LIBDECOR_RESIZE_EDGE_BOTTOM_RIGHT, LIBDECOR_RESIZE_EDGE_BOTTOM,
+            LIBDECOR_RESIZE_EDGE_BOTTOM_LEFT, LIBDECOR_RESIZE_EDGE_LEFT
+        };
+#endif
+
+        switch (window_data->hit_test_result) {
+        case SDL_HITTEST_DRAGGABLE:
+#ifdef HAVE_LIBDECOR_H
+            if (window_data->shell_surface_type == WAYLAND_SHELL_SURFACE_TYPE_LIBDECOR) {
+                if (window_data->shell_surface.libdecor.frame) {
+                    libdecor_frame_move(window_data->shell_surface.libdecor.frame,
+                                        seat,
+                                        serial);
+                }
+            } else
+#endif
+                if (window_data->shell_surface_type == WAYLAND_SHELL_SURFACE_TYPE_XDG_TOPLEVEL) {
+                if (window_data->shell_surface.xdg.toplevel.xdg_toplevel) {
+                    xdg_toplevel_move(window_data->shell_surface.xdg.toplevel.xdg_toplevel,
+                                      seat,
+                                      serial);
+                }
+            }
+            return true;
+
+        case SDL_HITTEST_RESIZE_TOPLEFT:
+        case SDL_HITTEST_RESIZE_TOP:
+        case SDL_HITTEST_RESIZE_TOPRIGHT:
+        case SDL_HITTEST_RESIZE_RIGHT:
+        case SDL_HITTEST_RESIZE_BOTTOMRIGHT:
+        case SDL_HITTEST_RESIZE_BOTTOM:
+        case SDL_HITTEST_RESIZE_BOTTOMLEFT:
+        case SDL_HITTEST_RESIZE_LEFT:
+#ifdef HAVE_LIBDECOR_H
+            if (window_data->shell_surface_type == WAYLAND_SHELL_SURFACE_TYPE_LIBDECOR) {
+                if (window_data->shell_surface.libdecor.frame) {
+                    libdecor_frame_resize(window_data->shell_surface.libdecor.frame,
+                                          seat,
+                                          serial,
+                                          directions_libdecor[window_data->hit_test_result - SDL_HITTEST_RESIZE_TOPLEFT]);
+                }
+            } else
+#endif
+                if (window_data->shell_surface_type == WAYLAND_SHELL_SURFACE_TYPE_XDG_TOPLEVEL) {
+                if (window_data->shell_surface.xdg.toplevel.xdg_toplevel) {
+                    xdg_toplevel_resize(window_data->shell_surface.xdg.toplevel.xdg_toplevel,
+                                        seat,
+                                        serial,
+                                        directions[window_data->hit_test_result - SDL_HITTEST_RESIZE_TOPLEFT]);
+                }
+            }
+            return true;
+
+        default:
+            return false;
+        }
+    }
+
+    return false;
+}
+
+static void pointer_handle_button_common(struct SDL_WaylandInput *input, uint32_t serial,
+                                         uint32_t time, uint32_t button, uint32_t state_w)
+{
+    SDL_WindowData *window = input->pointer_focus;
+    enum wl_pointer_button_state state = state_w;
+    Uint64 timestamp = Wayland_GetPointerTimestamp(input, time);
+    Uint8 sdl_button;
+    const bool down = (state != 0);
+
+    switch (button) {
+    case BTN_LEFT:
+        sdl_button = SDL_BUTTON_LEFT;
+        break;
+    case BTN_MIDDLE:
+        sdl_button = SDL_BUTTON_MIDDLE;
+        break;
+    case BTN_RIGHT:
+        sdl_button = SDL_BUTTON_RIGHT;
+        break;
+    case BTN_SIDE:
+        sdl_button = SDL_BUTTON_X1;
+        break;
+    case BTN_EXTRA:
+        sdl_button = SDL_BUTTON_X2;
+        break;
+    default:
+        return;
+    }
+
+    if (window) {
+        SDL_VideoData *viddata = window->waylandData;
+        bool ignore_click = false;
+
+        if (state) {
+            Wayland_UpdateImplicitGrabSerial(input, serial);
+            input->buttons_pressed |= SDL_BUTTON_MASK(sdl_button);
+        } else {
+            input->buttons_pressed &= ~(SDL_BUTTON_MASK(sdl_button));
+        }
+
+        if (sdl_button == SDL_BUTTON_LEFT &&
+            ProcessHitTest(input->pointer_focus, input->seat, input->sx_w, input->sy_w, serial)) {
+            return; // don't pass this event on to app.
+        }
+
+        // Possibly ignore this click if it was to gain focus.
+        if (window->last_focus_event_time_ns) {
+            if (state == WL_POINTER_BUTTON_STATE_PRESSED &&
+                (SDL_GetTicksNS() - window->last_focus_event_time_ns) < WAYLAND_FOCUS_CLICK_TIMEOUT_NS) {
+                ignore_click = !SDL_GetHintBoolean(SDL_HINT_MOUSE_FOCUS_CLICKTHROUGH, false);
+            }
+
+            window->last_focus_event_time_ns = 0;
+        }
+
+        /* Wayland won't let you "capture" the mouse, but it will automatically track
+         * the mouse outside the window if you drag outside of it, until you let go
+         * of all buttons (even if you add or remove presses outside the window, as
+         * long as any button is still down, the capture remains).
+         *
+         * The mouse is not captured in relative mode.
+         */
+        if (!viddata->relative_mouse_mode) {
+            if (input->buttons_pressed != 0) {
+                window->sdlwindow->flags |= SDL_WINDOW_MOUSE_CAPTURE;
+            } else {
+                window->sdlwindow->flags &= ~SDL_WINDOW_MOUSE_CAPTURE;
+            }
+        }
+
+        if (!ignore_click) {
+            SDL_SendMouseButton(timestamp, window->sdlwindow, input->pointer_id, sdl_button, down);
+        }
+    }
+}
+
+static void pointer_handle_button(void *data, struct wl_pointer *pointer, uint32_t serial,
+                                  uint32_t time, uint32_t button, uint32_t state_w)
+{
+    struct SDL_WaylandInput *input = data;
+
+    pointer_handle_button_common(input, serial, time, button, state_w);
+}
+
+static void pointer_handle_axis_common_v1(struct SDL_WaylandInput *input,
+                                          uint32_t time, uint32_t axis, wl_fixed_t value)
+{
+    SDL_WindowData *window = input->pointer_focus;
+    const Uint64 timestamp = Wayland_GetPointerTimestamp(input, time);
+    const enum wl_pointer_axis a = axis;
+
+    if (input->pointer_focus) {
+        float x, y;
+
+        switch (a) {
+        case WL_POINTER_AXIS_VERTICAL_SCROLL:
+            x = 0;
+            y = 0 - (float)wl_fixed_to_double(value);
+            break;
+        case WL_POINTER_AXIS_HORIZONTAL_SCROLL:
+            x = (float)wl_fixed_to_double(value);
+            y = 0;
+            break;
+        default:
+            return;
+        }
+
+        x /= WAYLAND_WHEEL_AXIS_UNIT;
+        y /= WAYLAND_WHEEL_AXIS_UNIT;
+
+        SDL_SendMouseWheel(timestamp, window->sdlwindow, input->pointer_id, x, y, SDL_MOUSEWHEEL_NORMAL);
+    }
+}
+
+static void pointer_handle_axis_common(struct SDL_WaylandInput *input, enum SDL_WaylandAxisEvent type,
+                                       uint32_t axis, wl_fixed_t value)
+{
+    const enum wl_pointer_axis a = axis;
+
+    if (input->pointer_focus) {
+        switch (a) {
+        case WL_POINTER_AXIS_VERTICAL_SCROLL:
+            switch (type) {
+            case AXIS_EVENT_VALUE120:
+                /*
+                 * High resolution scroll event. The spec doesn't state that axis_value120
+                 * events are limited to one per frame, so the values are accumulated.
+                 */
+                if (input->pointer_curr_axis_info.y_axis_type != AXIS_EVENT_VALUE120) {
+                    input->pointer_curr_axis_info.y_axis_type = AXIS_EVENT_VALUE120;
+                    input->pointer_curr_axis_info.y = 0.0f;
+                }
+                input->pointer_curr_axis_info.y += 0 - (float)wl_fixed_to_double(value);
+                break;
+            case AXIS_EVENT_DISCRETE:
+                /*
+                 * This is a discrete axis event, so we process it and set the
+                 * flag to ignore future continuous axis events in this frame.
+                 */
+                if (input->pointer_curr_axis_info.y_axis_type != AXIS_EVENT_DISCRETE) {
+                    input->pointer_curr_axis_info.y_axis_type = AXIS_EVENT_DISCRETE;
+                    input->pointer_curr_axis_info.y = 0 - (float)wl_fixed_to_double(value);
+                }
+                break;
+            case AXIS_EVENT_CONTINUOUS:
+                // Only process continuous events if no discrete events have been received.
+                if (input->pointer_curr_axis_info.y_axis_type == AXIS_EVENT_CONTINUOUS) {
+                    input->pointer_curr_axis_info.y = 0 - (float)wl_fixed_to_double(value);
+                }
+                break;
+            }
+            break;
+        case WL_POINTER_AXIS_HORIZONTAL_SCROLL:
+            switch (type) {
+            case AXIS_EVENT_VALUE120:
+                /*
+                 * High resolution scroll event. The spec doesn't state that axis_value120
+                 * events are limited to one per frame, so the values are accumulated.
+                 */
+                if (input->pointer_curr_axis_info.x_axis_type != AXIS_EVENT_VALUE120) {
+                    input->pointer_curr_axis_info.x_axis_type = AXIS_EVENT_VALUE120;
+                    input->pointer_curr_axis_info.x = 0.0f;
+                }
+                input->pointer_curr_axis_info.x += (float)wl_fixed_to_double(value);
+                break;
+            case AXIS_EVENT_DISCRETE:
+                /*
+                 * This is a discrete axis event, so we process it and set the
+                 * flag to ignore future continuous axis events in this frame.
+                 */
+                if (input->pointer_curr_axis_info.x_axis_type != AXIS_EVENT_DISCRETE) {
+                    input->pointer_curr_axis_info.x_axis_type = AXIS_EVENT_DISCRETE;
+                    input->pointer_curr_axis_info.x = (float)wl_fixed_to_double(value);
+                }
+                break;
+            case AXIS_EVENT_CONTINUOUS:
+                // Only process continuous events if no discrete events have been received.
+                if (input->pointer_curr_axis_info.x_axis_type == AXIS_EVENT_CONTINUOUS) {
+                    input->pointer_curr_axis_info.x = (float)wl_fixed_to_double(value);
+                }
+                break;
+            }
+            break;
+        }
+    }
+}
+
+static void pointer_handle_axis(void *data, struct wl_pointer *pointer,
+                                uint32_t time, uint32_t axis, wl_fixed_t value)
+{
+    struct SDL_WaylandInput *input = data;
+
+    if (wl_seat_get_version(input->seat) >= WL_POINTER_FRAME_SINCE_VERSION) {
+        input->pointer_curr_axis_info.timestamp_ns = Wayland_GetPointerTimestamp(input, time);
+        pointer_handle_axis_common(input, AXIS_EVENT_CONTINUOUS, axis, value);
+    } else {
+        pointer_handle_axis_common_v1(input, time, axis, value);
+    }
+}
+
+static void pointer_handle_axis_relative_direction(void *data, struct wl_pointer *pointer,
+                                                   uint32_t axis, uint32_t axis_relative_direction)
+{
+    struct SDL_WaylandInput *input = data;
+    if (axis != WL_POINTER_AXIS_VERTICAL_SCROLL) {
+        return;
+    }
+    switch (axis_relative_direction) {
+    case WL_POINTER_AXIS_RELATIVE_DIRECTION_IDENTICAL:
+        input->pointer_curr_axis_info.direction = SDL_MOUSEWHEEL_NORMAL;
+        break;
+    case WL_POINTER_AXIS_RELATIVE_DIRECTION_INVERTED:
+        input->pointer_curr_axis_info.direction = SDL_MOUSEWHEEL_FLIPPED;
+        break;
+    }
+}
+
+static void pointer_handle_frame(void *data, struct wl_pointer *pointer)
+{
+    struct SDL_WaylandInput *input = data;
+    SDL_WindowData *window = input->pointer_focus;
+    float x, y;
+    SDL_MouseWheelDirection direction = input->pointer_curr_axis_info.direction;
+
+    switch (input->pointer_curr_axis_info.x_axis_type) {
+    case AXIS_EVENT_CONTINUOUS:
+        x = input->pointer_curr_axis_info.x / WAYLAND_WHEEL_AXIS_UNIT;
+        break;
+    case AXIS_EVENT_DISCRETE:
+        x = input->pointer_curr_axis_info.x;
+        break;
+    case AXIS_EVENT_VALUE120:
+        x = input->pointer_curr_axis_info.x / 120.0f;
+        break;
+    default:
+        x = 0.0f;
+        break;
+    }
+
+    switch (input->pointer_curr_axis_info.y_axis_type) {
+    case AXIS_EVENT_CONTINUOUS:
+        y = input->pointer_curr_axis_info.y / WAYLAND_WHEEL_AXIS_UNIT;
+        break;
+    case AXIS_EVENT_DISCRETE:
+        y = input->pointer_curr_axis_info.y;
+        break;
+    case AXIS_EVENT_VALUE120:
+        y = input->pointer_curr_axis_info.y / 120.0f;
+        break;
+    default:
+        y = 0.0f;
+        break;
+    }
+
+    // clear pointer_curr_axis_info for next frame
+    SDL_memset(&input->pointer_curr_axis_info, 0, sizeof(input->pointer_curr_axis_info));
+
+    if (x != 0.0f || y != 0.0f) {
+        SDL_SendMouseWheel(input->pointer_curr_axis_info.timestamp_ns,
+                           window->sdlwindow, input->pointer_id, x, y, direction);
+    }
+}
+
+static void pointer_handle_axis_source(void *data, struct wl_pointer *pointer,
+                                       uint32_t axis_source)
+{
+    // unimplemented
+}
+
+static void pointer_handle_axis_stop(void *data, struct wl_pointer *pointer,
+                                     uint32_t time, uint32_t axis)
+{
+    // unimplemented
+}
+
+static void pointer_handle_axis_discrete(void *data, struct wl_pointer *pointer,
+                                         uint32_t axis, int32_t discrete)
+{
+    struct SDL_WaylandInput *input = data;
+
+    pointer_handle_axis_common(input, AXIS_EVENT_DISCRETE, axis, wl_fixed_from_int(discrete));
+}
+
+static void pointer_handle_axis_value120(void *data, struct wl_pointer *pointer,
+                                         uint32_t axis, int32_t value120)
+{
+    struct SDL_WaylandInput *input = data;
+
+    pointer_handle_axis_common(input, AXIS_EVENT_VALUE120, axis, wl_fixed_from_int(value120));
+}
+
+static const struct wl_pointer_listener pointer_listener = {
+    pointer_handle_enter,
+    pointer_handle_leave,
+    pointer_handle_motion,
+    pointer_handle_button,
+    pointer_handle_axis,
+    pointer_handle_frame,                  // Version 5
+    pointer_handle_axis_source,            // Version 5
+    pointer_handle_axis_stop,              // Version 5
+    pointer_handle_axis_discrete,          // Version 5
+    pointer_handle_axis_value120,          // Version 8
+    pointer_handle_axis_relative_direction // Version 9
+};
+
+static void relative_pointer_handle_relative_motion(void *data,
+                                                    struct zwp_relative_pointer_v1 *pointer,
+                                                    uint32_t time_hi,
+                                                    uint32_t time_lo,
+                                                    wl_fixed_t dx_w,
+                                                    wl_fixed_t dy_w,
+                                                    wl_fixed_t dx_unaccel_w,
+                                                    wl_fixed_t dy_unaccel_w)
+{
+    struct SDL_WaylandInput *input = data;
+    SDL_VideoData *d = input->display;
+    SDL_WindowData *window = input->pointer_focus;
+
+    // Relative pointer event times are in microsecond granularity.
+    const Uint64 timestamp = Wayland_GetEventTimestamp(SDL_US_TO_NS(((Uint64)time_hi << 32) | (Uint64)time_lo));
+
+    if (input->pointer_focus && d->relative_mouse_mode) {
+        double dx;
+        double dy;
+        if (!SDL_GetMouse()->enable_relative_system_scale) {
+            dx = wl_fixed_to_double(dx_unaccel_w);
+            dy = wl_fixed_to_double(dy_unaccel_w);
+        } else {
+            dx = wl_fixed_to_double(dx_w);
+            dy = wl_fixed_to_double(dy_w);
+        }
+
+        SDL_SendMouseMotion(timestamp, window->sdlwindow, input->pointer_id, true, (float)dx, (float)dy);
+    }
+}
+
+static const struct zwp_relative_pointer_v1_listener relative_pointer_listener = {
+    relative_pointer_handle_relative_motion,
+};
+
+static void locked_pointer_locked(void *data,
+                                  struct zwp_locked_pointer_v1 *locked_pointer)
+{
+}
+
+static void locked_pointer_unlocked(void *data,
+                                    struct zwp_locked_pointer_v1 *locked_pointer)
+{
+}
+
+static const struct zwp_locked_pointer_v1_listener locked_pointer_listener = {
+    locked_pointer_locked,
+    locked_pointer_unlocked,
+};
+
+bool Wayland_input_lock_pointer(struct SDL_WaylandInput *input, SDL_Window *window)
+{
+    SDL_WindowData *w = window->internal;
+    SDL_VideoData *d = input->display;
+
+    if (!d->pointer_constraints || !input->pointer) {
+        return false;
+    }
+
+    if (!w->locked_pointer) {
+        if (w->confined_pointer) {
+            // If the pointer is already confined to the surface, the lock will fail with a protocol error.
+            Wayland_input_unconfine_pointer(input, window);
+        }
+
+        w->locked_pointer = zwp_pointer_constraints_v1_lock_pointer(d->pointer_constraints,
+                                                                    w->surface,
+                                                                    input->pointer,
+                                                                    NULL,
+                                                                    ZWP_POINTER_CONSTRAINTS_V1_LIFETIME_PERSISTENT);
+        zwp_locked_pointer_v1_add_listener(w->locked_pointer,
+                                           &locked_pointer_listener,
+                                           window);
+    }
+
+    return true;
+}
+
+bool Wayland_input_unlock_pointer(struct SDL_WaylandInput *input, SDL_Window *window)
+{
+    SDL_WindowData *w = window->internal;
+
+    if (w->locked_pointer) {
+        zwp_locked_pointer_v1_destroy(w->locked_pointer);
+        w->locked_pointer = NULL;
+    }
+
+    // Restore existing pointer confinement.
+    Wayland_input_confine_pointer(input, window);
+
+    return true;
+}
+
+static void pointer_confine_destroy(SDL_Window *window)
+{
+    SDL_WindowData *w = window->internal;
+    if (w->confined_pointer) {
+        zwp_confined_pointer_v1_destroy(w->confined_pointer);
+        w->confined_pointer = NULL;
+    }
+}
+
+static void confined_pointer_confined(void *data,
+                                      struct zwp_confined_pointer_v1 *confined_pointer)
+{
+}
+
+static void confined_pointer_unconfined(void *data,
+                                        struct zwp_confined_pointer_v1 *confined_pointer)
+{
+}
+
+static const struct zwp_confined_pointer_v1_listener confined_pointer_listener = {
+    confined_pointer_confined,
+    confined_pointer_unconfined,
+};
+
+static void touch_handler_down(void *data, struct wl_touch *touch, uint32_t serial,
+                               uint32_t timestamp, struct wl_surface *surface,
+                               int id, wl_fixed_t fx, wl_fixed_t fy)
+{
+    struct SDL_WaylandInput *input = (struct SDL_WaylandInput *)data;
+    SDL_WindowData *window_data;
+
+    // Check that this surface is valid.
+    if (!surface) {
+        return;
+    }
+
+    touch_add(id, fx, fy, surface);
+    Wayland_UpdateImplicitGrabSerial(input, serial);
+    window_data = Wayland_GetWindowDataForOwnedSurface(surface);
+
+    if (window_data) {
+        float x, y;
+
+        if (window_data->current.logical_width <= 1) {
+            x = 0.5f;
+        } else {
+            x = (float)wl_fixed_to_double(fx) / (window_data->current.logical_width - 1);
+        }
+        if (window_data->current.logical_height <= 1) {
+            y = 0.5f;
+        } else {
+            y = (float)wl_fixed_to_double(fy) / (window_data->current.logical_height - 1);
+        }
+
+        SDL_SetMouseFocus(window_data->sdlwindow);
+
+        SDL_SendTouch(Wayland_GetTouchTimestamp(input, timestamp), (SDL_TouchID)(uintptr_t)touch,
+                      (SDL_FingerID)(id + 1), window_data->sdlwindow, SDL_EVENT_FINGER_DOWN, x, y, 1.0f);
+    }
+}
+
+static void touch_handler_up(void *data, struct wl_touch *touch, uint32_t serial,
+                             uint32_t timestamp, int id)
+{
+    struct SDL_WaylandInput *input = (struct SDL_WaylandInput *)data;
+    wl_fixed_t fx = 0, fy = 0;
+    struct wl_surface *surface = NULL;
+
+    touch_del(id, &fx, &fy, &surface);
+
+    if (surface) {
+        SDL_WindowData *window_data = (SDL_WindowData *)wl_surface_get_user_data(surface);
+
+        if (window_data) {
+            const float x = (float)wl_fixed_to_double(fx) / window_data->current.logical_width;
+            const float y = (float)wl_fixed_to_double(fy) / window_data->current.logical_height;
+
+            SDL_SendTouch(Wayland_GetTouchTimestamp(input, timestamp), (SDL_TouchID)(uintptr_t)touch,
+                          (SDL_FingerID)(id + 1), window_data->sdlwindow, SDL_EVENT_FINGER_UP, x, y, 0.0f);
+
+            /* If the seat lacks pointer focus, the seat's keyboard focus is another window or NULL, this window currently
+             * has mouse focus, and the surface has no active touch events, consider mouse focus to be lost.
+             */
+            if (!input->pointer_focus && input->keyboard_focus != window_data &&
+                SDL_GetMouseFocus() == window_data->sdlwindow && !Wayland_SurfaceHasActiveTouches(surface)) {
+                SDL_SetMouseFocus(NULL);
+            }
+        }
+    }
+}
+
+static void touch_handler_motion(void *data, struct wl_touch *touch, uint32_t timestamp,
+                                 int id, wl_fixed_t fx, wl_fixed_t fy)
+{
+    struct SDL_WaylandInput *input = (struct SDL_WaylandInput *)data;
+    struct wl_surface *surface = NULL;
+
+    touch_update(id, fx, fy, &surface);
+
+    if (surface) {
+        SDL_WindowData *window_data = (SDL_WindowData *)wl_surface_get_user_data(surface);
+
+        if (window_data) {
+            const float x = (float)wl_fixed_to_double(fx) / window_data->current.logical_width;
+            const float y = (float)wl_fixed_to_double(fy) / window_data->current.logical_height;
+
+            SDL_SendTouchMotion(Wayland_GetPointerTimestamp(input, timestamp), (SDL_TouchID)(uintptr_t)touch,
+                                (SDL_FingerID)(id + 1), window_data->sdlwindow, x, y, 1.0f);
+        }
+    }
+}
+
+static void touch_handler_frame(void *data, struct wl_touch *touch)
+{
+}
+
+static void touch_handler_cancel(void *data, struct wl_touch *touch)
+{
+    struct SDL_WaylandInput *input = (struct SDL_WaylandInput *)data;
+    struct SDL_WaylandTouchPoint *tp, *temp;
+
+    wl_list_for_each_safe (tp, temp, &touch_points, link) {
+        bool removed = false;
+
+        if (tp->surface) {
+            SDL_WindowData *window_data = (SDL_WindowData *)wl_surface_get_user_data(tp->surface);
+
+            if (window_data) {
+                const float x = (float)(wl_fixed_to_double(tp->fx) / window_data->current.logical_width);
+                const float y = (float)(wl_fixed_to_double(tp->fy) / window_data->current.logical_height);
+
+                SDL_SendTouch(0, (SDL_TouchID)(uintptr_t)touch,
+                              (SDL_FingerID)(tp->id + 1), window_data->sdlwindow, SDL_EVENT_FINGER_CANCELED, x, y, 0.0f);
+
+                // Remove the touch from the list before checking for still-active touches on the surface.
+                WAYLAND_wl_list_remove(&tp->link);
+                removed = true;
+
+                /* If the seat lacks pointer focus, the seat's keyboard focus is another window or NULL, this window currently
+                 * has mouse focus, and the surface has no active touch events, consider mouse focus to be lost.
+                 */
+                if (!input->pointer_focus && input->keyboard_focus != window_data &&
+                    SDL_GetMouseFocus() == window_data->sdlwindow && !Wayland_SurfaceHasActiveTouches(tp->surface)) {
+                    SDL_SetMouseFocus(NULL);
+                }
+            }
+        }
+
+        if (!removed) {
+            WAYLAND_wl_list_remove(&tp->link);
+        }
+        SDL_free(tp);
+    }
+}
+
+static const struct wl_touch_listener touch_listener = {
+    touch_handler_down,
+    touch_handler_up,
+    touch_handler_motion,
+    touch_handler_frame,
+    touch_handler_cancel,
+    NULL, // shape
+    NULL, // orientation
+};
+
+typedef struct Wayland_Keymap
+{
+    SDL_Keymap *keymap;
+    struct xkb_state *state;
+    SDL_Keymod modstate;
+} Wayland_Keymap;
+
+static void Wayland_keymap_iter(struct xkb_keymap *keymap, xkb_keycode_t key, void *data)
+{
+    Wayland_Keymap *sdlKeymap = (Wayland_Keymap *)data;
+    const xkb_keysym_t *syms;
+    const SDL_Scancode scancode = SDL_GetScancodeFromTable(SDL_SCANCODE_TABLE_XFREE86_2, (key - 8));
+    if (scancode == SDL_SCANCODE_UNKNOWN) {
+        return;
+    }
+
+    if (WAYLAND_xkb_state_key_get_syms(sdlKeymap->state, key, &syms) > 0) {
+        SDL_Keycode keycode = SDL_GetKeyCodeFromKeySym(syms[0], key, sdlKeymap->modstate);
+
+        if (!keycode) {
+            switch (scancode) {
+            case SDL_SCANCODE_RETURN:
+                keycode = SDLK_RETURN;
+                break;
+            case SDL_SCANCODE_ESCAPE:
+                keycode = SDLK_ESCAPE;
+                break;
+            case SDL_SCANCODE_BACKSPACE:
+                keycode = SDLK_BACKSPACE;
+                break;
+            case SDL_SCANCODE_DELETE:
+                keycode = SDLK_DELETE;
+                break;
+            default:
+                keycode = SDL_SCANCODE_TO_KEYCODE(scancode);
+                break;
+            }
+        }
+
+        SDL_SetKeymapEntry(sdlKeymap->keymap, scancode, sdlKeymap->modstate, keycode);
+    }
+}
+
+static void Wayland_UpdateKeymap(struct SDL_WaylandInput *input)
+{
+    struct Keymod_masks
+    {
+        SDL_Keymod sdl_mask;
+        xkb_mod_mask_t xkb_mask;
+    } const keymod_masks[] = {
+        { SDL_KMOD_NONE, 0 },
+        { SDL_KMOD_SHIFT, input->xkb.idx_shift },
+        { SDL_KMOD_CAPS, input->xkb.idx_caps },
+        { SDL_KMOD_SHIFT | SDL_KMOD_CAPS, input->xkb.idx_shift | input->xkb.idx_caps },
+        { SDL_KMOD_MODE, input->xkb.idx_mod5 },
+        { SDL_KMOD_MODE | SDL_KMOD_SHIFT, input->xkb.idx_mod5 | input->xkb.idx_shift },
+        { SDL_KMOD_MODE | SDL_KMOD_CAPS, input->xkb.idx_mod5 | input->xkb.idx_caps },
+        { SDL_KMOD_MODE | SDL_KMOD_SHIFT | SDL_KMOD_CAPS, input->xkb.idx_mod5 | input->xkb.idx_shift | input->xkb.idx_caps },
+        { SDL_KMOD_LEVEL5, input->xkb.idx_mod3 },
+        { SDL_KMOD_LEVEL5 | SDL_KMOD_SHIFT, input->xkb.idx_mod3 | input->xkb.idx_shift },
+        { SDL_KMOD_LEVEL5 | SDL_KMOD_CAPS, input->xkb.idx_mod3 | input->xkb.idx_caps },
+        { SDL_KMOD_LEVEL5 | SDL_KMOD_SHIFT | SDL_KMOD_CAPS, input->xkb.idx_mod3 | input->xkb.idx_shift | input->xkb.idx_caps },
+        { SDL_KMOD_LEVEL5 | SDL_KMOD_MODE, input->xkb.idx_mod3 | input->xkb.idx_mod5 },
+        { SDL_KMOD_LEVEL5 | SDL_KMOD_MODE | SDL_KMOD_SHIFT, input->xkb.idx_mod3 | input->xkb.idx_mod5 | input->xkb.idx_shift },
+        { SDL_KMOD_LEVEL5 | SDL_KMOD_MODE | SDL_KMOD_CAPS, input->xkb.idx_mod3 | input->xkb.idx_mod5 | input->xkb.idx_caps },
+        { SDL_KMOD_LEVEL5 | SDL_KMOD_MODE | SDL_KMOD_SHIFT | SDL_KMOD_CAPS, input->xkb.idx_mod3 | input->xkb.idx_mod5 | input->xkb.idx_shift | input->xkb.idx_caps },
+    };
+
+    if (!input->keyboard_is_virtual) {
+        Wayland_Keymap keymap;
+
+        keymap.keymap = SDL_CreateKeymap();
+        if (!keymap.keymap) {
+            return;
+        }
+
+        keymap.state = WAYLAND_xkb_state_new(input->xkb.keymap);
+        if (!keymap.state) {
+            SDL_SetError("failed to create XKB state");
+            SDL_DestroyKeymap(keymap.keymap);
+            return;
+        }
+
+        for (int i = 0; i < SDL_arraysize(keymod_masks); ++i) {
+            keymap.modstate = keymod_masks[i].sdl_mask;
+            WAYLAND_xkb_state_update_mask(keymap.state,
+                                          keymod_masks[i].xkb_mask & (input->xkb.idx_shift | input->xkb.idx_mod5 | input->xkb.idx_mod3), 0, keymod_masks[i].xkb_mask & input->xkb.idx_caps,
+                                          0, 0, input->xkb.current_group);
+            WAYLAND_xkb_keymap_key_for_each(input->xkb.keymap,
+                                            Wayland_keymap_iter,
+                                            &keymap);
+        }
+
+        WAYLAND_xkb_state_unref(keymap.state);
+        SDL_SetKeymap(keymap.keymap, true);
+    } else {
+        // Virtual keyboards use the default keymap.
+        SDL_SetKeymap(NULL, true);
+    }
+}
+
+static void keyboard_handle_keymap(void *data, struct wl_keyboard *keyboard,
+                                   uint32_t format, int fd, uint32_t size)
+{
+    struct SDL_WaylandInput *input = data;
+    char *map_str;
+    const char *locale;
+
+    if (!data) {
+        close(fd);
+        return;
+    }
+
+    if (format != WL_KEYBOARD_KEYMAP_FORMAT_XKB_V1) {
+        close(fd);
+        return;
+    }
+
+    map_str = mmap(NULL, size, PROT_READ, MAP_PRIVATE, fd, 0);
+    if (map_str == MAP_FAILED) {
+        close(fd);
+        return;
+    }
+
+    if (input->xkb.keymap != NULL) {
+        /* if there's already a keymap loaded, throw it away rather than leaking it before
+         * parsing the new one
+         */
+        WAYLAND_xkb_keymap_unref(input->xkb.keymap);
+        input->xkb.keymap = NULL;
+    }
+    input->xkb.keymap = WAYLAND_xkb_keymap_new_from_string(input->display->xkb_context,
+                                                           map_str,
+                                                           XKB_KEYMAP_FORMAT_TEXT_V1,
+                                                           0);
+    munmap(map_str, size);
+    close(fd);
+
+    if (!input->xkb.keymap) {
+        SDL_SetError("failed to compile keymap");
+        return;
+    }
+
+#define GET_MOD_INDEX(mod) \
+    WAYLAND_xkb_keymap_mod_get_index(input->xkb.keymap, XKB_MOD_NAME_##mod)
+    input->xkb.idx_shift = 1 << GET_MOD_INDEX(SHIFT);
+    input->xkb.idx_ctrl = 1 << GET_MOD_INDEX(CTRL);
+    input->xkb.idx_alt = 1 << GET_MOD_INDEX(ALT);
+    input->xkb.idx_gui = 1 << GET_MOD_INDEX(LOGO);
+    input->xkb.idx_mod3 = 1 << GET_MOD_INDEX(MOD3);
+    input->xkb.idx_mod5 = 1 << GET_MOD_INDEX(MOD5);
+    input->xkb.idx_num = 1 << GET_MOD_INDEX(NUM);
+    input->xkb.idx_caps = 1 << GET_MOD_INDEX(CAPS);
+#undef GET_MOD_INDEX
+
+    if (input->xkb.state != NULL) {
+        /* if there's already a state, throw it away rather than leaking it before
+         * trying to create a new one with the new keymap.
+         */
+        WAYLAND_xkb_state_unref(input->xkb.state);
+        input->xkb.state = NULL;
+    }
+    input->xkb.state = WAYLAND_xkb_state_new(input->xkb.keymap);
+    if (!input->xkb.state) {
+        SDL_SetError("failed to create XKB state");
+        WAYLAND_xkb_keymap_unref(input->xkb.keymap);
+        input->xkb.keymap = NULL;
+        return;
+    }
+
+    /*
+     * Assume that a nameless layout implies a virtual keyboard with an arbitrary layout.
+     * TODO: Use a better method of detection?
+     */
+    input->keyboard_is_virtual = WAYLAND_xkb_keymap_layout_get_name(input->xkb.keymap, 0) == NULL;
+
+    // Update the keymap if changed.
+    if (input->xkb.current_group != XKB_GROUP_INVALID) {
+        Wayland_UpdateKeymap(input);
+    }
+
+    /*
+     * See https://blogs.s-osg.org/compose-key-support-weston/
+     * for further explanation on dead keys in Wayland.
+     */
+
+    // Look up the preferred locale, falling back to "C" as default
+    locale = SDL_getenv("LC_ALL");
+    if (!locale) {
+        locale = SDL_getenv("LC_CTYPE");
+        if (!locale) {
+            locale = SDL_getenv("LANG");
+            if (!locale) {
+                locale = "C";
+            }
+        }
+    }
+
+    // Set up XKB compose table
+    if (input->xkb.compose_table != NULL) {
+        WAYLAND_xkb_compose_table_unref(input->xkb.compose_table);
+        input->xkb.compose_table = NULL;
+    }
+    input->xkb.compose_table = WAYLAND_xkb_compose_table_new_from_locale(input->display->xkb_context,
+                                                                         locale, XKB_COMPOSE_COMPILE_NO_FLAGS);
+    if (input->xkb.compose_table) {
+        // Set up XKB compose state
+        if (input->xkb.compose_state != NULL) {
+            WAYLAND_xkb_compose_state_unref(input->xkb.compose_state);
+            input->xkb.compose_state = NULL;
+        }
+        input->xkb.compose_state = WAYLAND_xkb_compose_state_new(input->xkb.compose_table,
+                                                                 XKB_COMPOSE_STATE_NO_FLAGS);
+        if (!input->xkb.compose_state) {
+            SDL_SetError("could not create XKB compose state");
+            WAYLAND_xkb_compose_table_unref(input->xkb.compose_table);
+            input->xkb.compose_table = NULL;
+        }
+    }
+}
+
+/*
+ * Virtual keyboards can have arbitrary layouts, arbitrary scancodes/keycodes, etc...
+ * Key presses from these devices must be looked up by their keysym value.
+ */
+static SDL_Scancode Wayland_GetScancodeForKey(struct SDL_WaylandInput *input, uint32_t key)
+{
+    SDL_Scancode scancode = SDL_SCANCODE_UNKNOWN;
+
+    if (!input->keyboard_is_virtual) {
+        scancode = SDL_GetScancodeFromTable(SDL_SCANCODE_TABLE_XFREE86_2, key);
+    } else {
+        const xkb_keysym_t *syms;
+        if (WAYLAND_xkb_keymap_key_get_syms_by_level(input->xkb.keymap, key + 8, input->xkb.current_group, 0, &syms) > 0) {
+            scancode = SDL_GetScancodeFromKeySym(syms[0], key);
+        }
+    }
+
+    return scancode;
+}
+
+static void Wayland_ReconcileModifiers(struct SDL_WaylandInput *input, bool key_pressed)
+{
+    /* Handle explicit pressed modifier state. This will correct the modifier state
+     * if common modifier keys were remapped and the modifiers presumed to be set
+     * during a key press event were incorrect, or if the modifier was set to the
+     * pressed state via means other than pressing the physical key.
+     */
+    if (!key_pressed) {
+        if (input->xkb.wl_pressed_modifiers & input->xkb.idx_shift) {
+            if (!(input->pressed_modifiers & SDL_KMOD_SHIFT)) {
+                input->pressed_modifiers |= SDL_KMOD_SHIFT;
+            }
+        } else {
+            input->pressed_modifiers &= ~SDL_KMOD_SHIFT;
+        }
+
+        if (input->xkb.wl_pressed_modifiers & input->xkb.idx_ctrl) {
+            if (!(input->pressed_modifiers & SDL_KMOD_CTRL)) {
+                input->pressed_modifiers |= SDL_KMOD_CTRL;
+            }
+        } else {
+            input->pressed_modifiers &= ~SDL_KMOD_CTRL;
+        }
+
+        if (input->xkb.wl_pressed_modifiers & input->xkb.idx_alt) {
+            if (!(input->pressed_modifiers & SDL_KMOD_ALT)) {
+                input->pressed_modifiers |= SDL_KMOD_ALT;
+            }
+        } else {
+            input->pressed_modifiers &= ~SDL_KMOD_ALT;
+        }
+
+        if (input->xkb.wl_pressed_modifiers & input->xkb.idx_gui) {
+            if (!(input->pressed_modifiers & SDL_KMOD_GUI)) {
+                input->pressed_modifiers |= SDL_KMOD_GUI;
+            }
+        } else {
+            input->pressed_modifiers &= ~SDL_KMOD_GUI;
+        }
+
+        /* Note: This is not backwards: in the default keymap, Mod5 is typically
+         *       level 3 shift, and Mod3 is typically level 5 shift.
+         */
+        if (input->xkb.wl_pressed_modifiers & input->xkb.idx_mod3) {
+            if (!(input->pressed_modifiers & SDL_KMOD_LEVEL5)) {
+                input->pressed_modifiers |= SDL_KMOD_LEVEL5;
+            }
+        } else {
+            input->pressed_modifiers &= ~SDL_KMOD_LEVEL5;
+        }
+
+        if (input->xkb.wl_pressed_modifiers & input->xkb.idx_mod5) {
+            if (!(input->pressed_modifiers & SDL_KMOD_MODE)) {
+                input->pressed_modifiers |= SDL_KMOD_MODE;
+            }
+        } else {
+            input->pressed_modifiers &= ~SDL_KMOD_MODE;
+        }
+    }
+
+    /* If a latch or lock was activated by a keypress, the latch/lock will
+     * be tied to the specific left/right key that initiated it. Otherwise,
+     * the ambiguous left/right combo is used.
+     *
+     * The modifier will remain active until the latch/lock is released by
+     * the system.
+     */
+    if (input->xkb.wl_locked_modifiers & input->xkb.idx_shift) {
+        if (input->pressed_modifiers & SDL_KMOD_SHIFT) {
+            input->locked_modifiers &= ~SDL_KMOD_SHIFT;
+            input->locked_modifiers |= (input->pressed_modifiers & SDL_KMOD_SHIFT);
+        } else if (!(input->locked_modifiers & SDL_KMOD_SHIFT)) {
+            input->locked_modifiers |= SDL_KMOD_SHIFT;
+        }
+    } else {
+        input->locked_modifiers &= ~SDL_KMOD_SHIFT;
+    }
+
+    if (input->xkb.wl_locked_modifiers & input->xkb.idx_ctrl) {
+        if (input->pressed_modifiers & SDL_KMOD_CTRL) {
+            input->locked_modifiers &= ~SDL_KMOD_CTRL;
+            input->locked_modifiers |= (input->pressed_modifiers & SDL_KMOD_CTRL);
+        } else if (!(input->locked_modifiers & SDL_KMOD_CTRL)) {
+            input->locked_modifiers |= SDL_KMOD_CTRL;
+        }
+    } else {
+        input->locked_modifiers &= ~SDL_KMOD_CTRL;
+    }
+
+    if (input->xkb.wl_locked_modifiers & input->xkb.idx_alt) {
+        if (input->pressed_modifiers & SDL_KMOD_ALT) {
+            input->locked_modifiers &= ~SDL_KMOD_ALT;
+            input->locked_modifiers |= (input->pressed_modifiers & SDL_KMOD_ALT);
+        } else if (!(input->locked_modifiers & SDL_KMOD_ALT)) {
+            input->locked_modifiers |= SDL_KMOD_ALT;
+        }
+    } else {
+        input->locked_modifiers &= ~SDL_KMOD_ALT;
+    }
+
+    if (input->xkb.wl_locked_modifiers & input->xkb.idx_gui) {
+        if (input->pressed_modifiers & SDL_KMOD_GUI) {
+            input->locked_modifiers &= ~SDL_KMOD_GUI;
+            input->locked_modifiers |= (input->pressed_modifiers & SDL_KMOD_GUI);
+        } else if (!(input->locked_modifiers & SDL_KMOD_GUI)) {
+            input->locked_modifiers |= SDL_KMOD_GUI;
+        }
+    } else {
+        input->locked_modifiers &= ~SDL_KMOD_GUI;
+    }
+
+    // As above, this is correct: Mod3 is typically level 5 shift, and Mod5 is typically level 3 shift.
+    if (input->xkb.wl_locked_modifiers & input->xkb.idx_mod3) {
+        input->locked_modifiers |= SDL_KMOD_LEVEL5;
+    } else {
+        input->locked_modifiers &= ~SDL_KMOD_LEVEL5;
+    }
+
+    if (input->xkb.wl_locked_modifiers & input->xkb.idx_mod5) {
+        input->locked_modifiers |= SDL_KMOD_MODE;
+    } else {
+        input->locked_modifiers &= ~SDL_KMOD_MODE;
+    }
+
+    // Capslock and Numlock can only be locked, not pressed.
+    if (input->xkb.wl_locked_modifiers & input->xkb.idx_caps) {
+        input->locked_modifiers |= SDL_KMOD_CAPS;
+    } else {
+        input->locked_modifiers &= ~SDL_KMOD_CAPS;
+    }
+
+    if (input->xkb.wl_locked_modifiers & input->xkb.idx_num) {
+        input->locked_modifiers |= SDL_KMOD_NUM;
+    } else {
+        input->locked_modifiers &= ~SDL_KMOD_NUM;
+    }
+
+    SDL_SetModState(input->pressed_modifiers | input->locked_modifiers);
+}
+
+static void Wayland_HandleModifierKeys(struct SDL_WaylandInput *input, SDL_Scancode scancode, bool pressed)
+{
+    const SDL_Keycode keycode = SDL_GetKeyFromScancode(scancode, SDL_KMOD_NONE, false);
+    SDL_Keymod mod;
+
+    /* SDL clients expect modifier state to be activated at the same time as the
+     * source keypress, so we set pressed modifier state with the usual modifier
+     * keys here, as the explicit modifier event won't arrive until after the
+     * keypress event. If this is wrong, it will be corrected when the explicit
+     * modifier state is sent at a later time.
+     */
+    switch (keycode) {
+    case SDLK_LSHIFT:
+        mod = SDL_KMOD_LSHIFT;
+        break;
+    case SDLK_RSHIFT:
+        mod = SDL_KMOD_RSHIFT;
+        break;
+    case SDLK_LCTRL:
+        mod = SDL_KMOD_LCTRL;
+        break;
+    case SDLK_RCTRL:
+        mod = SDL_KMOD_RCTRL;
+        break;
+    case SDLK_LALT:
+        mod = SDL_KMOD_LALT;
+        break;
+    case SDLK_RALT:
+        mod = SDL_KMOD_RALT;
+        break;
+    case SDLK_LGUI:
+        mod = SDL_KMOD_LGUI;
+        break;
+    case SDLK_RGUI:
+        mod = SDL_KMOD_RGUI;
+        break;
+    case SDLK_MODE:
+        mod = SDL_KMOD_MODE;
+        break;
+    case SDLK_LEVEL5_SHIFT:
+        mod = SDL_KMOD_LEVEL5;
+        break;
+    default:
+        return;
+    }
+
+    if (pressed) {
+        input->pressed_modifiers |= mod;
+    } else {
+        input->pressed_modifiers &= ~mod;
+    }
+
+    Wayland_ReconcileModifiers(input, true);
+}
+
+static void keyboard_handle_enter(void *data, struct wl_keyboard *keyboard,
+                                  uint32_t serial, struct wl_surface *surface,
+                                  struct wl_array *keys)
+{
+    struct SDL_WaylandInput *input = data;
+    SDL_WindowData *window;
+    uint32_t *key;
+
+    if (!surface) {
+        // enter event for a window we've just destroyed
+        return;
+    }
+
+    window = Wayland_GetWindowDataForOwnedSurface(surface);
+
+    if (!window) {
+        return;
+    }
+
+    input->keyboard_focus = window;
+    window->keyboard_device = input;
+
+    // Restore the keyboard focus to the child popup that was holding it
+    SDL_SetKeyboardFocus(window->keyboard_focus ? window->keyboard_focus : window->sdlwindow);
+
+#ifdef SDL_USE_IME
+    if (!input->text_input) {
+        SDL_IME_SetFocus(true);
+    }
+#endif
+
+    Uint64 timestamp = SDL_GetTicksNS();
+    window->last_focus_event_time_ns = timestamp;
+
+    wl_array_for_each (key, keys) {
+        const SDL_Scancode scancode = Wayland_GetScancodeForKey(input, *key);
+        const SDL_Keycode keycode = SDL_GetKeyFromScancode(scancode, SDL_KMOD_NONE, false);
+
+        switch (keycode) {
+        case SDLK_LSHIFT:
+        case SDLK_RSHIFT:
+        case SDLK_LCTRL:
+        case SDLK_RCTRL:
+        case SDLK_LALT:
+        case SDLK_RALT:
+        case SDLK_LGUI:
+        case SDLK_RGUI:
+        case SDLK_MODE:
+        case SDLK_LEVEL5_SHIFT:
+            Wayland_HandleModifierKeys(input, scancode, true);
+            SDL_SendKeyboardKeyIgnoreModifiers(timestamp, input->keyboard_id, *key, scancode, true);
+            break;
+        default:
+            break;
+        }
+    }
+}
+
+static void keyboard_handle_leave(void *data, struct wl_keyboard *keyboard,
+                                  uint32_t serial, struct wl_surface *surface)
+{
+    struct SDL_WaylandInput *input = data;
+    SDL_WindowData *wind;
+    SDL_Window *window = NULL;
+
+    if (!surface) {
+        return;
+    }
+
+    wind = Wayland_GetWindowDataForOwnedSurface(surface);
+    if (!wind) {
+        return;
+    }
+
+    wind->keyboard_device = NULL;
+    window = wind->sdlwindow;
+
+    // Stop key repeat before clearing keyboard focus
+    keyboard_repeat_clear(&input->keyboard_repeat);
+
+    // This will release any keys still pressed
+    SDL_SetKeyboardFocus(NULL);
+    input->keyboard_focus = NULL;
+
+    // Clear the pressed modifiers.
+    input->pressed_modifiers = SDL_KMOD_NONE;
+
+#ifdef SDL_USE_IME
+    if (!input->text_input) {
+        SDL_IME_SetFocus(false);
+    }
+#endif
+
+    /* If the surface had a pointer leave event while still having active touch events, it retained mouse focus.
+     * Clear it now if all touch events are raised.
+     */
+    if (!input->pointer_focus && SDL_GetMouseFocus() == window && !Wayland_SurfaceHasActiveTouches(surface)) {
+        SDL_SetMouseFocus(NULL);
+    }
+}
+
+static bool keyboard_input_get_text(char text[8], const struct SDL_WaylandInput *input, uint32_t key, bool down, bool *handled_by_ime)
+{
+    SDL_WindowData *window = input->keyboard_focus;
+    const xkb_keysym_t *syms;
+    xkb_keysym_t sym;
+
+    if (!window || window->keyboard_device != input || !input->xkb.state) {
+        return false;
+    }
+
+    // TODO: Can this happen?
+    if (WAYLAND_xkb_state_key_get_syms(input->xkb.state, key + 8, &syms) != 1) {
+        return false;
+    }
+    sym = syms[0];
+
+#ifdef SDL_USE_IME
+    if (SDL_IME_ProcessKeyEvent(sym, key + 8, down)) {
+        if (handled_by_ime) {
+            *handled_by_ime = true;
+        }
+        return true;
+    }
+#endif
+
+    if (!down) {
+        return false;
+    }
+
+    if (input->xkb.compose_state && WAYLAND_xkb_compose_state_feed(input->xkb.compose_state, sym) == XKB_COMPOSE_FEED_ACCEPTED) {
+        switch (WAYLAND_xkb_compose_state_get_status(input->xkb.compose_state)) {
+        case XKB_COMPOSE_COMPOSING:
+            if (handled_by_ime) {
+                *handled_by_ime = true;
+            }
+            return true;
+        case XKB_COMPOSE_CANCELLED:
+        default:
+            sym = XKB_KEY_NoSymbol;
+            break;
+        case XKB_COMPOSE_NOTHING:
+            break;
+        case XKB_COMPOSE_COMPOSED:
+            sym = WAYLAND_xkb_compose_state_get_one_sym(input->xkb.compose_state);
+            break;
+        }
+    }
+
+    return WAYLAND_xkb_keysym_to_utf8(sym, text, 8) > 0;
+}
+
+static void keyboard_handle_key(void *data, struct wl_keyboard *keyboard,
+                                uint32_t serial, uint32_t time, uint32_t key,
+                                uint32_t state_w)
+{
+    struct SDL_WaylandInput *input = data;
+    enum wl_keyboard_key_state state = state_w;
+    char text[8];
+    bool has_text = false;
+    bool handled_by_ime = false;
+    const Uint64 timestamp_raw_ns = Wayland_GetKeyboardTimestampRaw(input, time);
+
+    Wayland_UpdateImplicitGrabSerial(input, serial);
+
+    if (state == WL_KEYBOARD_KEY_STATE_PRESSED) {
+        SDL_Window *keyboard_focus = SDL_GetKeyboardFocus();
+        if (keyboard_focus && SDL_TextInputActive(keyboard_focus)) {
+            has_text = keyboard_input_get_text(text, input, key, true, &handled_by_ime);
+        }
+    } else {
+        if (keyboard_repeat_key_is_set(&input->keyboard_repeat, key)) {
+            /* Send any due key repeat events before stopping the repeat and generating the key up event.
+             * Compute time based on the Wayland time, as it reports when the release event happened.
+             * Using SDL_GetTicks would be wrong, as it would report when the release event is processed,
+             * which may be off if the application hasn't pumped events for a while.
+             */
+            keyboard_repeat_handle(&input->keyboard_repeat, timestamp_raw_ns - input->keyboard_repeat.wl_press_time_ns);
+            keyboard_repeat_clear(&input->keyboard_repeat);
+        }
+        keyboard_input_get_text(text, input, key, false, &handled_by_ime);
+    }
+
+    const SDL_Scancode scancode = Wayland_GetScancodeForKey(input, key);
+    Wayland_HandleModifierKeys(input, scancode, state == WL_KEYBOARD_KEY_STATE_PRESSED);
+    Uint64 timestamp = Wayland_GetKeyboardTimestamp(input, time);
+
+    SDL_SendKeyboardKeyIgnoreModifiers(timestamp, input->keyboard_id, key, scancode, state == WL_KEYBOARD_KEY_STATE_PRESSED);
+
+    if (state == WL_KEYBOARD_KEY_STATE_PRESSED) {
+        if (has_text && !(SDL_GetModState() & SDL_KMOD_CTRL)) {
+            if (!handled_by_ime) {
+                SDL_SendKeyboardText(text);
+            }
+        }
+        if (input->xkb.keymap && WAYLAND_xkb_keymap_key_repeats(input->xkb.keymap, key + 8)) {
+            keyboard_repeat_set(&input->keyboard_repeat, input->keyboard_id, key, timestamp_raw_ns, scancode, has_text, text);
+        }
+    }
+}
+
+static void keyboard_handle_modifiers(void *data, struct wl_keyboard *keyboard,
+                                      uint32_t serial, uint32_t mods_depressed,
+                                      uint32_t mods_latched, uint32_t mods_locked,
+                                      uint32_t group)
+{
+    struct SDL_WaylandInput *input = data;
+
+    if (input->xkb.state == NULL) {
+        /* if we get a modifier notification before the keymap, there's nothing we can do with the information
+        */
+        return;
+    }
+
+    WAYLAND_xkb_state_update_mask(input->xkb.state, mods_depressed, mods_latched,
+                                  mods_locked, 0, 0, group);
+
+    input->xkb.wl_pressed_modifiers = mods_depressed;
+    input->xkb.wl_locked_modifiers = mods_latched | mods_locked;
+
+    Wayland_ReconcileModifiers(input, false);
+
+    // If a key is repeating, update the text to apply the modifier.
+    if (keyboard_repeat_is_set(&input->keyboard_repeat)) {
+        char text[8];
+        const uint32_t key = keyboard_repeat_get_key(&input->keyboard_repeat);
+
+        if (keyboard_input_get_text(text, input, key, true, NULL)) {
+            keyboard_repeat_set_text(&input->keyboard_repeat, text);
+        }
+    }
+
+    if (group == input->xkb.current_group) {
+        return;
+    }
+
+    // The layout changed, remap and fire an event. Virtual keyboards use the default keymap.
+    input->xkb.current_group = group;
+    Wayland_UpdateKeymap(input);
+}
+
+static void keyboard_handle_repeat_info(void *data, struct wl_keyboard *wl_keyboard,
+                                        int32_t rate, int32_t delay)
+{
+    struct SDL_WaylandInput *input = data;
+    input->keyboard_repeat.repeat_rate = SDL_clamp(rate, 0, 1000);
+    input->keyboard_repeat.repeat_delay_ms = delay;
+    input->keyboard_repeat.is_initialized = true;
+}
+
+static const struct wl_keyboard_listener keyboard_listener = {
+    keyboard_handle_keymap,
+    keyboard_handle_enter,
+    keyboard_handle_leave,
+    keyboard_handle_key,
+    keyboard_handle_modifiers,
+    keyboard_handle_repeat_info, // Version 4
+};
+
+void Wayland_input_init_relative_pointer(SDL_VideoData *d)
+{
+    struct SDL_WaylandInput *input = d->input;
+
+    if (!d->relative_pointer_manager) {
+        return;
+    }
+
+    if (input->pointer && !input->relative_pointer) {
+        input->relative_pointer = zwp_relative_pointer_manager_v1_get_relative_pointer(input->display->relative_pointer_manager, input->pointer);
+        zwp_relative_pointer_v1_add_listener(input->relative_pointer,
+                                             &relative_pointer_listener,
+                                             input);
+    }
+}
+
+static void seat_handle_capabilities(void *data, struct wl_seat *seat,
+                                     enum wl_seat_capability caps)
+{
+    struct SDL_WaylandInput *input = data;
+
+    if ((caps & WL_SEAT_CAPABILITY_POINTER) && !input->pointer) {
+        input->pointer = wl_seat_get_pointer(seat);
+        SDL_memset(&input->pointer_curr_axis_info, 0, sizeof(input->pointer_curr_axis_info));
+        input->display->pointer = input->pointer;
+
+        Wayland_CreateCursorShapeDevice(input);
+
+        wl_pointer_set_user_data(input->pointer, input);
+        wl_pointer_add_listener(input->pointer, &pointer_listener, input);
+
+        Wayland_input_init_relative_pointer(input->display);
+
+        input->pointer_id = SDL_GetNextObjectID();
+        SDL_AddMouse(input->pointer_id, WAYLAND_DEFAULT_POINTER_NAME, !input->display->initializing);
+    } else if (!(caps & WL_SEAT_CAPABILITY_POINTER) && input->pointer) {
+        if (input->relative_pointer) {
+            zwp_relative_pointer_v1_destroy(input->relative_pointer);
+            input->relative_pointer = NULL;
+        }
+        if (input->cursor_shape) {
+            wp_cursor_shape_device_v1_destroy(input->cursor_shape);
+            input->cursor_shape = NULL;
+        }
+        if (wl_pointer_get_version(input->pointer) >= WL_POINTER_RELEASE_SINCE_VERSION) {
+            wl_pointer_release(input->pointer);
+        } else {
+            wl_pointer_destroy(input->pointer);
+        }
+        input->pointer = NULL;
+        input->display->pointer = NULL;
+
+        SDL_RemoveMouse(input->pointer_id, true);
+        input->pointer_id = 0;
+    }
+
+    if ((caps & WL_SEAT_CAPABILITY_TOUCH) && !input->touch) {
+        input->touch = wl_seat_get_touch(seat);
+        SDL_AddTouch((SDL_TouchID)(uintptr_t)input->touch, SDL_TOUCH_DEVICE_DIRECT, "wayland_touch");
+        wl_touch_set_user_data(input->touch, input);
+        wl_touch_add_listener(input->touch, &touch_listener,
+                              input);
+    } else if (!(caps & WL_SEAT_CAPABILITY_TOUCH) && input->touch) {
+        SDL_DelTouch((SDL_TouchID)(intptr_t)input->touch);
+        wl_touch_destroy(input->touch);
+        input->touch = NULL;
+    }
+
+    if ((caps & WL_SEAT_CAPABILITY_KEYBOARD) && !input->keyboard) {
+        input->keyboard = wl_seat_get_keyboard(seat);
+        wl_keyboard_set_user_data(input->keyboard, input);
+        wl_keyboard_add_listener(input->keyboard, &keyboard_listener,
+                                 input);
+
+        input->keyboard_id = SDL_GetNextObjectID();
+        SDL_AddKeyboard(input->keyboard_id, WAYLAND_DEFAULT_KEYBOARD_NAME, !input->display->initializing);
+    } else if (!(caps & WL_SEAT_CAPABILITY_KEYBOARD) && input->keyboard) {
+        wl_keyboard_destroy(input->keyboard);
+        input->keyboard = NULL;
+
+        SDL_RemoveKeyboard(input->keyboard_id, true);
+        input->keyboard_id = 0;
+    }
+
+    Wayland_RegisterTimestampListeners(input);
+}
+
+static void seat_handle_name(void *data, struct wl_seat *wl_seat, const char *name)
+{
+    // unimplemented
+}
+
+static const struct wl_seat_listener seat_listener = {
+    seat_handle_capabilities,
+    seat_handle_name, // Version 2
+};
+
+static void data_source_handle_target(void *data, struct wl_data_source *wl_data_source,
+                                      const char *mime_type)
+{
+}
+
+static void data_source_handle_send(void *data, struct wl_data_source *wl_data_source,
+                                    const char *mime_type, int32_t fd)
+{
+    Wayland_data_source_send((SDL_WaylandDataSource *)data, mime_type, fd);
+}
+
+static void data_source_handle_cancelled(void *data, struct wl_data_source *wl_data_source)
+{
+    SDL_WaylandDataSource *source = data;
+    if (source) {
+        Wayland_data_source_destroy(source);
+    }
+}
+
+static void data_source_handle_dnd_drop_performed(void *data, struct wl_data_source *wl_data_source)
+{
+}
+
+static void data_source_handle_dnd_finished(void *data, struct wl_data_source *wl_data_source)
+{
+}
+
+static void data_source_handle_action(void *data, struct wl_data_source *wl_data_source,
+                                      uint32_t dnd_action)
+{
+}
+
+static const struct wl_data_source_listener data_source_listener = {
+    data_source_handle_target,
+    data_source_handle_send,
+    data_source_handle_cancelled,
+    data_source_handle_dnd_drop_performed, // Version 3
+    data_source_handle_dnd_finished,       // Version 3
+    data_source_handle_action,             // Version 3
+};
+
+static void primary_selection_source_send(void *data, struct zwp_primary_selection_source_v1 *zwp_primary_selection_source_v1,
+                                          const char *mime_type, int32_t fd)
+{
+    Wayland_primary_selection_source_send((SDL_WaylandPrimarySelectionSource *)data,
+                                          mime_type, fd);
+}
+
+static void primary_selection_source_cancelled(void *data, struct zwp_primary_selection_source_v1 *zwp_primary_selection_source_v1)
+{
+    Wayland_primary_selection_source_destroy(data);
+}
+
+static const struct zwp_primary_selection_source_v1_listener primary_selection_source_listener = {
+    primary_selection_source_send,
+    primary_selection_source_cancelled,
+};
+
+SDL_WaylandDataSource *Wayland_data_source_create(SDL_VideoDevice *_this)
+{
+    SDL_WaylandDataSource *data_source = NULL;
+    SDL_VideoData *driver_data = NULL;
+    struct wl_data_source *id = NULL;
+
+    if (!_this || !_this->internal) {
+        SDL_SetError("Video driver uninitialized");
+    } else {
+        driver_data = _this->internal;
+
+        if (driver_data->data_device_manager) {
+            id = wl_data_device_manager_create_data_source(
+                driver_data->data_device_manager);
+        }
+
+        if (!id) {
+            SDL_SetError("Wayland unable to create data source");
+        } else {
+            data_source = SDL_calloc(1, sizeof(*data_source));
+            if (!data_source) {
+                wl_data_source_destroy(id);
+            } else {
+                data_source->source = id;
+                wl_data_source_set_user_data(id, data_source);
+                wl_data_source_add_listener(id, &data_source_listener,
+                                            data_source);
+            }
+        }
+    }
+    return data_source;
+}
+
+SDL_WaylandPrimarySelectionSource *Wayland_primary_selection_source_create(SDL_VideoDevice *_this)
+{
+    SDL_WaylandPrimarySelectionSource *primary_selection_source = NULL;
+    SDL_VideoData *driver_data = NULL;
+    struct zwp_primary_selection_source_v1 *id = NULL;
+
+    if (!_this || !_this->internal) {
+        SDL_SetError("Video driver uninitialized");
+    } else {
+        driver_data = _this->internal;
+
+        if (driver_data->primary_selection_device_manager) {
+            id = zwp_primary_selection_device_manager_v1_create_source(
+                driver_data->primary_selection_device_manager);
+        }
+
+        if (!id) {
+            SDL_SetError("Wayland unable to create primary selection source");
+        } else {
+            primary_selection_source = SDL_calloc(1, sizeof(*primary_selection_source));
+            if (!primary_selection_source) {
+                zwp_primary_selection_source_v1_destroy(id);
+            } else {
+                primary_selection_source->source = id;
+                zwp_primary_selection_source_v1_add_listener(id, &primary_selection_source_listener,
+                                                             primary_selection_source);
+            }
+        }
+    }
+    return primary_selection_source;
+}
+
+static void data_offer_handle_offer(void *data, struct wl_data_offer *wl_data_offer,
+                                    const char *mime_type)
+{
+    SDL_WaylandDataOffer *offer = data;
+    Wayland_data_offer_add_mime(offer, mime_type);
+    SDL_LogTrace(SDL_LOG_CATEGORY_INPUT,
+                 ". In wl_data_offer_listener . data_offer_handle_offer on data_offer 0x%08x for MIME '%s'",
+                 (wl_data_offer ? WAYLAND_wl_proxy_get_id((struct wl_proxy *)wl_data_offer) : -1),
+                 mime_type);
+}
+
+static void data_offer_handle_source_actions(void *data, struct wl_data_offer *wl_data_offer,
+                                             uint32_t source_actions)
+{
+    SDL_LogTrace(SDL_LOG_CATEGORY_INPUT,
+                 ". In wl_data_offer_listener . data_offer_handle_source_actions on data_offer 0x%08x for Source Actions '%d'",
+                 (wl_data_offer ? WAYLAND_wl_proxy_get_id((struct wl_proxy *)wl_data_offer) : -1),
+                 source_actions);
+}
+
+static void data_offer_handle_actions(void *data, struct wl_data_offer *wl_data_offer,
+                                      uint32_t dnd_action)
+{
+    SDL_LogTrace(SDL_LOG_CATEGORY_INPUT,
+                 ". In wl_data_offer_listener . data_offer_handle_actions on data_offer 0x%08x for DND Actions '%d'",
+                 (wl_data_offer ? WAYLAND_wl_proxy_get_id((struct wl_proxy *)wl_data_offer) : -1),
+                 dnd_action);
+}
+
+static const struct wl_data_offer_listener data_offer_listener = {
+    data_offer_handle_offer,
+    data_offer_handle_source_actions, // Version 3
+    data_offer_handle_actions,        // Version 3
+};
+
+static void primary_selection_offer_handle_offer(void *data, struct zwp_primary_selection_offer_v1 *zwp_primary_selection_offer_v1,
+                                                 const char *mime_type)
+{
+    SDL_WaylandPrimarySelectionOffer *offer = data;
+    Wayland_primary_selection_offer_add_mime(offer, mime_type);
+    SDL_LogTrace(SDL_LOG_CATEGORY_INPUT,
+                 ". In zwp_primary_selection_offer_v1_listener . primary_selection_offer_handle_offer on primary_selection_offer 0x%08x for MIME '%s'",
+                 (zwp_primary_selection_offer_v1 ? WAYLAND_wl_proxy_get_id((struct wl_proxy *)zwp_primary_selection_offer_v1) : -1),
+                 mime_type);
+}
+
+static const struct zwp_primary_selection_offer_v1_listener primary_selection_offer_listener = {
+    primary_selection_offer_handle_offer,
+};
+
+static void data_device_handle_data_offer(void *data, struct wl_data_device *wl_data_device,
+                                          struct wl_data_offer *id)
+{
+    SDL_WaylandDataOffer *data_offer = SDL_calloc(1, sizeof(*data_offer));
+    if (data_offer) {
+        data_offer->offer = id;
+        data_offer->data_device = data;
+        WAYLAND_wl_list_init(&(data_offer->mimes));
+        wl_data_offer_set_user_data(id, data_offer);
+        wl_data_offer_add_listener(id, &data_offer_listener, data_offer);
+        SDL_LogTrace(SDL_LOG_CATEGORY_INPUT,
+                     ". In wl_data_device_listener . data_device_handle_data_offer on data_offer 0x%08x",
+                     (id ? WAYLAND_wl_proxy_get_id((struct wl_proxy *)id) : -1));
+    }
+}
+
+static void data_device_handle_enter(void *data, struct wl_data_device *wl_data_device,
+                                     uint32_t serial, struct wl_surface *surface,
+                                     wl_fixed_t x, wl_fixed_t y, struct wl_data_offer *id)
+{
+    SDL_WaylandDataDevice *data_device = data;
+    data_device->has_mime_file = false;
+    data_device->has_mime_text = false;
+    uint32_t dnd_action = WL_DATA_DEVICE_MANAGER_DND_ACTION_NONE;
+
+    data_device->drag_serial = serial;
+
+    if (id) {
+        data_device->drag_offer = wl_data_offer_get_user_data(id);
+
+        // TODO: SDL Support more mime types
+#ifdef SDL_USE_LIBDBUS
+        if (Wayland_data_offer_has_mime(data_device->drag_offer, FILE_PORTAL_MIME)) {
+            data_device->has_mime_file = true;
+            wl_data_offer_accept(id, serial, FILE_PORTAL_MIME);
+        }
+#endif
+        if (Wayland_data_offer_has_mime(data_device->drag_offer, FILE_MIME)) {
+            data_device->has_mime_file = true;
+            wl_data_offer_accept(id, serial, FILE_MIME);
+        }
+
+        if (Wayland_data_offer_has_mime(data_device->drag_offer, TEXT_MIME)) {
+            data_device->has_mime_text = true;
+            wl_data_offer_accept(id, serial, TEXT_MIME);
+        }
+
+        // SDL only supports "copy" style drag and drop
+        if (data_device->has_mime_file || data_device->has_mime_text) {
+            dnd_action = WL_DATA_DEVICE_MANAGER_DND_ACTION_COPY;
+        } else {
+            // drag_mime is NULL this will decline the offer
+            wl_data_offer_accept(id, serial, NULL);
+        }
+        if (wl_data_offer_get_version(data_device->drag_offer->offer) >=
+            WL_DATA_OFFER_SET_ACTIONS_SINCE_VERSION) {
+            wl_data_offer_set_actions(data_device->drag_offer->offer,
+                                      dnd_action, dnd_action);
+        }
+
+        // find the current window
+        if (surface) {
+            SDL_WindowData *window = Wayland_GetWindowDataForOwnedSurface(surface);
+            if (window) {
+                data_device->dnd_window = window->sdlwindow;
+                const float dx = (float)wl_fixed_to_double(x);
+                const float dy = (float)wl_fixed_to_double(y);
+                SDL_SendDropPosition(data_device->dnd_window, dx, dy);
+                SDL_LogTrace(SDL_LOG_CATEGORY_INPUT,
+                             ". In wl_data_device_listener . data_device_handle_enter on data_offer 0x%08x at %d x %d into window %d for serial %d",
+                             WAYLAND_wl_proxy_get_id((struct wl_proxy *)id),
+                             wl_fixed_to_int(x), wl_fixed_to_int(y), SDL_GetWindowID(data_device->dnd_window), serial);
+            } else {
+                data_device->dnd_window = NULL;
+                SDL_LogTrace(SDL_LOG_CATEGORY_INPUT,
+                             ". In wl_data_device_listener . data_device_handle_enter on data_offer 0x%08x at %d x %d for serial %d",
+                             WAYLAND_wl_proxy_get_id((struct wl_proxy *)id),
+                             wl_fixed_to_int(x), wl_fixed_to_int(y), serial);
+            }
+        } else {
+            SDL_LogTrace(SDL_LOG_CATEGORY_INPUT,
+                         ". In wl_data_device_listener . data_device_handle_enter on data_offer 0x%08x at %d x %d for serial %d",
+                         WAYLAND_wl_proxy_get_id((struct wl_proxy *)id),
+                         wl_fixed_to_int(x), wl_fixed_to_int(y), serial);
+        }
+    } else {
+        SDL_LogTrace(SDL_LOG_CATEGORY_INPUT,
+                     ". In wl_data_device_listener . data_device_handle_enter on data_offer 0x%08x at %d x %d for serial %d",
+                     -1, wl_fixed_to_int(x), wl_fixed_to_int(y), serial);
+    }
+}
+
+static void data_device_handle_leave(void *data, struct wl_data_device *wl_data_device)
+{
+    SDL_WaylandDataDevice *data_device = data;
+
+    if (data_device->drag_offer) {
+        if (data_device->dnd_window) {
+            SDL_SendDropComplete(data_device->dnd_window);
+            SDL_LogTrace(SDL_LOG_CATEGORY_INPUT,
+                         ". In wl_data_device_listener . data_device_handle_leave on data_offer 0x%08x from window %d for serial %d",
+                         WAYLAND_wl_proxy_get_id((struct wl_proxy *)data_device->drag_offer->offer),
+                         SDL_GetWindowID(data_device->dnd_window), data_device->drag_serial);
+        } else {
+            SDL_LogTrace(SDL_LOG_CATEGORY_INPUT,
+                         ". In wl_data_device_listener . data_device_handle_leave on data_offer 0x%08x for serial %d",
+                         WAYLAND_wl_proxy_get_id((struct wl_proxy *)data_device->drag_offer->offer),
+                         data_device->drag_serial);
+        }
+        Wayland_data_offer_destroy(data_device->drag_offer);
+        data_device->drag_offer = NULL;
+    } else {
+        SDL_LogTrace(SDL_LOG_CATEGORY_INPUT,
+                     ". In wl_data_device_listener . data_device_handle_leave on data_offer 0x%08x for serial %d",
+                     -1, -1);
+    }
+    data_device->has_mime_file = false;
+    data_device->has_mime_text = false;
+}
+
+static void data_device_handle_motion(void *data, struct wl_data_device *wl_data_device,
+                                      uint32_t time, wl_fixed_t x, wl_fixed_t y)
+{
+    SDL_WaylandDataDevice *data_device = data;
+
+    if (data_device->drag_offer && data_device->dnd_window && (data_device->has_mime_file || data_device->has_mime_text)) {
+        const float dx = (float)wl_fixed_to_double(x);
+        const float dy = (float)wl_fixed_to_double(y);
+
+        /* XXX: Send the filename here if the event system ever starts passing it though.
+         *      Any future implementation should cache the filenames, as otherwise this could
+         *      hammer the DBus interface hundreds or even thousands of times per second.
+         */
+        SDL_SendDropPosition(data_device->dnd_window, dx, dy);
+        SDL_LogTrace(SDL_LOG_CATEGORY_INPUT,
+                     ". In wl_data_device_listener . data_device_handle_motion on data_offer 0x%08x at %d x %d in window %d serial %d",
+                     WAYLAND_wl_proxy_get_id((struct wl_proxy *)data_device->drag_offer->offer),
+                     wl_fixed_to_int(x), wl_fixed_to_int(y),
+                     SDL_GetWindowID(data_device->dnd_window), data_device->drag_serial);
+    } else {
+        SDL_LogTrace(SDL_LOG_CATEGORY_INPUT,
+                     ". In wl_data_device_listener . data_device_handle_motion on data_offer 0x%08x at %d x %d serial %d",
+                     -1, wl_fixed_to_int(x), wl_fixed_to_int(y), -1);
+    }
+}
+
+static void data_device_handle_drop(void *data, struct wl_data_device *wl_data_device)
+{
+    SDL_WaylandDataDevice *data_device = data;
+
+    if (data_device->drag_offer && data_device->dnd_window && (data_device->has_mime_file || data_device->has_mime_text)) {
+        SDL_LogTrace(SDL_LOG_CATEGORY_INPUT,
+                     ". In wl_data_device_listener . data_device_handle_drop on data_offer 0x%08x in window %d serial %d",
+                     WAYLAND_wl_proxy_get_id((struct wl_proxy *)data_device->drag_offer->offer),
+                     SDL_GetWindowID(data_device->dnd_window), data_device->drag_serial);
+        // TODO: SDL Support more mime types
+        size_t length;
+        bool drop_handled = false;
+#ifdef SDL_USE_LIBDBUS
+        if (Wayland_data_offer_has_mime(data_device->drag_offer, FILE_PORTAL_MIME)) {
+            void *buffer = Wayland_data_offer_receive(data_device->drag_offer,
+                                                      FILE_PORTAL_MIME, &length);
+            if (buffer) {
+                SDL_DBusContext *dbus = SDL_DBus_GetContext();
+                if (dbus) {
+                    int path_count = 0;
+                    char **paths = SDL_DBus_DocumentsPortalRetrieveFiles(buffer, &path_count);
+                    // If dropped files contain a directory the list is empty
+                    if (paths && path_count > 0) {
+                        int i;
+                        for (i = 0; i < path_count; i++) {
+                            SDL_SendDropFile(data_device->dnd_window, NULL, paths[i]);
+                        }
+                        dbus->free_string_array(paths);
+                        SDL_SendDropComplete(data_device->dnd_window);
+                        drop_handled = true;
+                    }
+                }
+                SDL_free(buffer);
+            }
+        }
+#endif
+        /* If XDG document portal fails fallback.
+         * When running a flatpak sandbox this will most likely be a list of
+         * non paths that are not visible to the application
+         */
+        if (!drop_handled) {
+            const char *mime_type = data_device->has_mime_file ? FILE_MIME : (data_device->has_mime_text ? TEXT_MIME : "");
+            void *buffer = Wayland_data_offer_receive(data_device->drag_offer,
+                                                      mime_type, &length);
+            if (data_device->has_mime_file) {
+                if (buffer) {
+                    char *saveptr = NULL;
+                    char *token = SDL_strtok_r((char *)buffer, "\r\n", &saveptr);
+                    while (token) {
+                        if (SDL_URIToLocal(token, token) >= 0) {
+                            SDL_SendDropFile(data_device->dnd_window, NULL, token);
+                        }
+                        token = SDL_strtok_r(NULL, "\r\n", &saveptr);
+                    }
+                    SDL_free(buffer);
+                    SDL_SendDropComplete(data_device->dnd_window);
+                } else {
+                    SDL_SendDropComplete(data_device->dnd_window);
+                }
+                drop_handled = true;
+            } else if (data_device->has_mime_text) {
+                if (buffer) {
+                    char *saveptr = NULL;
+                    char *token = SDL_strtok_r((char *)buffer, "\r\n", &saveptr);
+                    while (token) {
+                        SDL_SendDropText(data_device->dnd_window, token);
+                        token = SDL_strtok_r(NULL, "\r\n", &saveptr);
+                    }
+                    SDL_free(buffer);
+                    SDL_SendDropComplete(data_device->dnd_window);
+                } else {
+                    /* Even though there has been a valid data offer,
+                     *  and there have been valid Enter, Motion, and Drop callbacks,
+                     *  Wayland_data_offer_receive may return an empty buffer,
+                     *  because the data is actually in the primary selection device,
+                     *  not in the data device.
+                     */
+                    SDL_SendDropComplete(data_device->dnd_window);
+                }
+                drop_handled = true;
+            }
+        }
+
+        if (drop_handled && wl_data_offer_get_version(data_device->drag_offer->offer) >= WL_DATA_OFFER_FINISH_SINCE_VERSION) {
+            wl_data_offer_finish(data_device->drag_offer->offer);
+        }
+    } else {
+        SDL_LogTrace(SDL_LOG_CATEGORY_INPUT,
+                     ". In wl_data_device_listener . data_device_handle_drop on data_offer 0x%08x serial %d",
+                     -1, -1);
+    }
+
+    Wayland_data_offer_destroy(data_device->drag_offer);
+    data_device->drag_offer = NULL;
+}
+
+static void notifyFromMimes(struct wl_list *mimes)
+{
+    int nformats = 0;
+    char **new_mime_types = NULL;
+    if (mimes) {
+        nformats = WAYLAND_wl_list_length(mimes);
+        size_t alloc_size = (nformats + 1) * sizeof(char *);
+
+        /* do a first pass to compute allocation size */
+        SDL_MimeDataList *item = NULL;
+        wl_list_for_each(item, mimes, link) {
+            alloc_size += SDL_strlen(item->mime_type) + 1;
+        }
+
+        new_mime_types = SDL_AllocateTemporaryMemory(alloc_size);
+        if (!new_mime_types) {
+            SDL_LogError(SDL_LOG_CATEGORY_INPUT, "unable to allocate new_mime_types");
+            return;
+        }
+
+        /* second pass to fill*/
+        char *strPtr = (char *)(new_mime_types + nformats + 1);
+        item = NULL;
+        int i = 0;
+        wl_list_for_each(item, mimes, link) {
+            new_mime_types[i] = strPtr;
+            strPtr = stpcpy(strPtr, item->mime_type) + 1;
+            i++;
+        }
+        new_mime_types[nformats] = NULL;
+    }
+
+    SDL_SendClipboardUpdate(false, new_mime_types, nformats);
+}
+
+static void data_device_handle_selection(void *data, struct wl_data_device *wl_data_device,
+                                         struct wl_data_offer *id)
+{
+    SDL_WaylandDataDevice *data_device = data;
+    SDL_WaylandDataOffer *offer = NULL;
+
+    if (id) {
+        offer = wl_data_offer_get_user_data(id);
+    }
+
+    SDL_LogTrace(SDL_LOG_CATEGORY_INPUT,
+                 ". In data_device_listener . data_device_handle_selection on data_offer 0x%08x",
+                 (id ? WAYLAND_wl_proxy_get_id((struct wl_proxy *)id) : -1));
+    if (data_device->selection_offer != offer) {
+        Wayland_data_offer_destroy(data_device->selection_offer);
+        data_device->selection_offer = offer;
+    }
+
+    notifyFromMimes(offer ? &offer->mimes : NULL);
+}
+
+static const struct wl_data_device_listener data_device_listener = {
+    data_device_handle_data_offer,
+    data_device_handle_enter,
+    data_device_handle_leave,
+    data_device_handle_motion,
+    data_device_handle_drop,
+    data_device_handle_selection
+};
+
+static void primary_selection_device_handle_offer(void *data, struct zwp_primary_selection_device_v1 *zwp_primary_selection_device_v1,
+                                                  struct zwp_primary_selection_offer_v1 *id)
+{
+    SDL_WaylandPrimarySelectionOffer *primary_selection_offer = SDL_calloc(1, sizeof(*primary_selection_offer));
+    if (primary_selection_offer) {
+        primary_selection_offer->offer = id;
+        primary_selection_offer->primary_selection_device = data;
+        WAYLAND_wl_list_init(&(primary_selection_offer->mimes));
+        zwp_primary_selection_offer_v1_set_user_data(id, primary_selection_offer);
+        zwp_primary_selection_offer_v1_add_listener(id, &primary_selection_offer_listener, primary_selection_offer);
+    }
+    SDL_LogTrace(SDL_LOG_CATEGORY_INPUT,
+                 ". In zwp_primary_selection_device_v1_listener . primary_selection_device_handle_offer on primary_selection_offer 0x%08x",
+                 (id ? WAYLAND_wl_proxy_get_id((struct wl_proxy *)id) : -1));
+}
+
+static void primary_selection_device_handle_selection(void *data, struct zwp_primary_selection_device_v1 *zwp_primary_selection_device_v1,
+                                                      struct zwp_primary_selection_offer_v1 *id)
+{
+    SDL_WaylandPrimarySelectionDevice *primary_selection_device = data;
+    SDL_WaylandPrimarySelectionOffer *offer = NULL;
+
+    if (id) {
+        offer = zwp_primary_selection_offer_v1_get_user_data(id);
+    }
+
+    if (primary_selection_device->selection_offer != offer) {
+        Wayland_primary_selection_offer_destroy(primary_selection_device->selection_offer);
+        primary_selection_device->selection_offer = offer;
+    }
+    SDL_LogTrace(SDL_LOG_CATEGORY_INPUT,
+                 ". In zwp_primary_selection_device_v1_listener . primary_selection_device_handle_selection on primary_selection_offer 0x%08x",
+                 (id ? WAYLAND_wl_proxy_get_id((struct wl_proxy *)id) : -1));
+}
+
+static const struct zwp_primary_selection_device_v1_listener primary_selection_device_listener = {
+    primary_selection_device_handle_offer,
+    primary_selection_device_handle_selection
+};
+
+static void text_input_enter(void *data,
+                             struct zwp_text_input_v3 *zwp_text_input_v3,
+                             struct wl_surface *surface)
+{
+    // No-op
+}
+
+static void text_input_leave(void *data,
+                             struct zwp_text_input_v3 *zwp_text_input_v3,
+                             struct wl_surface *surface)
+{
+    // No-op
+}
+
+static void text_input_preedit_string(void *data,
+                                      struct zwp_text_input_v3 *zwp_text_input_v3,
+                                      const char *text,
+                                      int32_t cursor_begin,
+                                      int32_t cursor_end)
+{
+    SDL_WaylandTextInput *text_input = data;
+    text_input->has_preedit = true;
+    if (text) {
+        int cursor_begin_utf8 = cursor_begin >= 0 ? (int)SDL_utf8strnlen(text, cursor_begin) : -1;
+        int cursor_end_utf8 = cursor_end >= 0 ? (int)SDL_utf8strnlen(text, cursor_end) : -1;
+        int cursor_size_utf8;
+        if (cursor_end_utf8 >= 0) {
+            if (cursor_begin_utf8 >= 0) {
+                cursor_size_utf8 = cursor_end_utf8 - cursor_begin_utf8;
+            } else {
+                cursor_size_utf8 = cursor_end_utf8;
+            }
+        } else {
+            cursor_size_utf8 = -1;
+        }
+        SDL_SendEditingText(text, cursor_begin_utf8, cursor_size_utf8);
+    } else {
+        SDL_SendEditingText("", 0, 0);
+    }
+}
+
+static void text_input_commit_string(void *data,
+                                     struct zwp_text_input_v3 *zwp_text_input_v3,
+                                     const char *text)
+{
+    SDL_SendKeyboardText(text);
+}
+
+static void text_input_delete_surrounding_text(void *data,
+                                               struct zwp_text_input_v3 *zwp_text_input_v3,
+                                               uint32_t before_length,
+                                               uint32_t after_length)
+{
+    // FIXME: Do we care about this event?
+}
+
+static void text_input_done(void *data,
+                            struct zwp_text_input_v3 *zwp_text_input_v3,
+                            uint32_t serial)
+{
+    SDL_WaylandTextInput *text_input = data;
+    if (!text_input->has_preedit) {
+        SDL_SendEditingText("", 0, 0);
+    }
+    text_input->has_preedit = false;
+}
+
+static const struct zwp_text_input_v3_listener text_input_listener = {
+    text_input_enter,
+    text_input_leave,
+    text_input_preedit_string,
+    text_input_commit_string,
+    text_input_delete_surrounding_text,
+    text_input_done
+};
+
+void Wayland_create_data_device(SDL_VideoData *d)
+{
+    SDL_WaylandDataDevice *data_device = NULL;
+
+    if (!d->input->seat) {
+        // No seat yet, will be initialized later.
+        return;
+    }
+
+    data_device = SDL_calloc(1, sizeof(*data_device));
+    if (!data_device) {
+        return;
+    }
+
+    data_device->data_device = wl_data_device_manager_get_data_device(
+        d->data_device_manager, d->input->seat);
+    data_device->video_data = d;
+
+    if (!data_device->data_device) {
+        SDL_free(data_device);
+    } else {
+        wl_data_device_set_user_data(data_device->data_device, data_device);
+        wl_data_device_add_listener(data_device->data_device,
+                                    &data_device_listener, data_device);
+        d->input->data_device = data_device;
+    }
+}
+
+void Wayland_create_primary_selection_device(SDL_VideoData *d)
+{
+    SDL_WaylandPrimarySelectionDevice *primary_selection_device = NULL;
+
+    if (!d->input->seat) {
+        // No seat yet, will be initialized later.
+        return;
+    }
+
+    primary_selection_device = SDL_calloc(1, sizeof(*primary_selection_device));
+    if (!primary_selection_device) {
+        return;
+    }
+
+    primary_selection_device->primary_selection_device = zwp_primary_selection_device_manager_v1_get_device(
+        d->primary_selection_device_manager, d->input->seat);
+    primary_selection_device->video_data = d;
+
+    if (!primary_selection_device->primary_selection_device) {
+        SDL_free(primary_selection_device);
+    } else {
+        zwp_primary_selection_device_v1_set_user_data(primary_selection_device->primary_selection_device,
+                                                      primary_selection_device);
+        zwp_primary_selection_device_v1_add_listener(primary_selection_device->primary_selection_device,
+                                                     &primary_selection_device_listener, primary_selection_device);
+        d->input->primary_selection_device = primary_selection_device;
+    }
+}
+
+static void Wayland_create_text_input(SDL_VideoData *d)
+{
+    SDL_WaylandTextInput *text_input = NULL;
+
+    if (!d->input->seat) {
+        // No seat yet, will be initialized later.
+        return;
+    }
+
+    text_input = SDL_calloc(1, sizeof(*text_input));
+    if (!text_input) {
+        return;
+    }
+
+    text_input->text_input = zwp_text_input_manager_v3_get_text_input(
+        d->text_input_manager, d->input->seat);
+
+    if (!text_input->text_input) {
+        SDL_free(text_input);
+    } else {
+        zwp_text_input_v3_set_user_data(text_input->text_input, text_input);
+        zwp_text_input_v3_add_listener(text_input->text_input,
+                                       &text_input_listener, text_input);
+        d->input->text_input = text_input;
+    }
+}
+
+void Wayland_create_text_input_manager(SDL_VideoData *d, uint32_t id)
+{
+#ifdef HAVE_FCITX
+    const char *im_module = SDL_getenv("SDL_IM_MODULE");
+    if (im_module && SDL_strcmp(im_module, "fcitx") == 0) {
+        /* Override the Wayland text-input protocol when Fcitx is enabled, like how GTK_IM_MODULE does.
+         *
+         * The Fcitx wiki discourages enabling it under Wayland via SDL_IM_MODULE, so its presence must
+         * be intentional, and this workaround is needed for fixing key repeat detection.
+         */
+        return;
+    }
+#endif
+
+    d->text_input_manager = wl_registry_bind(d->registry, id, &zwp_text_input_manager_v3_interface, 1);
+    Wayland_create_text_input(d);
+}
+
+// Pen/Tablet support...
+
+typedef struct SDL_WaylandPenTool  // a stylus, etc, on a tablet.
+{
+    SDL_PenID instance_id;
+    SDL_PenInfo info;
+    SDL_Window *tool_focus;
+    struct zwp_tablet_tool_v2 *wltool;
+    float x;
+    float y;
+    bool frame_motion_set;
+    float frame_axes[SDL_PEN_AXIS_COUNT];
+    Uint32 frame_axes_set;
+    int frame_pen_down;
+    int frame_buttons[3];
+} SDL_WaylandPenTool;
+
+static void tablet_tool_handle_type(void *data, struct zwp_tablet_tool_v2 *tool, uint32_t type)
+{
+    SDL_WaylandPenTool *sdltool = (SDL_WaylandPenTool *) data;
+    switch (type) {
+        #define CASE(typ) case ZWP_TABLET_TOOL_V2_TYPE_##typ: sdltool->info.subtype = SDL_PEN_TYPE_##typ; return
+        CASE(ERASER);
+        CASE(PEN);
+        CASE(PENCIL);
+        CASE(AIRBRUSH);
+        CASE(BRUSH);
+        #undef CASE
+        default: sdltool->info.subtype = SDL_PEN_TYPE_UNKNOWN;  // we'll decline to add this when the `done` event comes through.
+    }
+}
+
+static void tablet_tool_handle_hardware_serial(void *data, struct zwp_tablet_tool_v2 *tool, uint32_t serial_hi, uint32_t serial_lo)
+{
+    // don't care about this atm.
+}
+
+static void tablet_tool_handle_hardware_id_wacom(void *data, struct zwp_tablet_tool_v2 *tool, uint32_t id_hi, uint32_t id_lo)
+{
+    SDL_WaylandPenTool *sdltool = (SDL_WaylandPenTool *) data;
+    sdltool->info.wacom_id = id_lo;
+}
+
+static void tablet_tool_handle_capability(void *data, struct zwp_tablet_tool_v2 *tool, uint32_t capability)
+{
+    SDL_WaylandPenTool *sdltool = (SDL_WaylandPenTool *) data;
+    switch (capability) {
+        #define CASE(wltyp,sdltyp) case ZWP_TABLET_TOOL_V2_CAPABILITY_##wltyp: sdltool->info.capabilities |= sdltyp; return
+        CASE(TILT, SDL_PEN_CAPABILITY_XTILT | SDL_PEN_CAPABILITY_YTILT);
+        CASE(PRESSURE, SDL_PEN_CAPABILITY_PRESSURE);
+        CASE(DISTANCE, SDL_PEN_CAPABILITY_DISTANCE);
+        CASE(ROTATION, SDL_PEN_CAPABILITY_ROTATION);
+        CASE(SLIDER, SDL_PEN_CAPABILITY_SLIDER);
+        #undef CASE
+        default: break;  // unsupported here.
+    }
+}
+
+static void tablet_tool_handle_done(void *data, struct zwp_tablet_tool_v2 *tool)
+{
+}
+
+static void tablet_tool_handle_removed(void *data, struct zwp_tablet_tool_v2 *tool)
+{
+    SDL_WaylandPenTool *sdltool = (SDL_WaylandPenTool *) data;
+    if (sdltool->instance_id) {
+        SDL_RemovePenDevice(0, sdltool->instance_id);
+    }
+    zwp_tablet_tool_v2_destroy(tool);
+    SDL_free(sdltool);
+}
+
+static void tablet_tool_handle_proximity_in(void *data, struct zwp_tablet_tool_v2 *tool, uint32_t serial, struct zwp_tablet_v2 *tablet, struct wl_surface *surface)
+{
+    SDL_WaylandPenTool *sdltool = (SDL_WaylandPenTool *) data;
+    SDL_WindowData *windowdata = surface ? Wayland_GetWindowDataForOwnedSurface(surface) : NULL;
+    sdltool->tool_focus = windowdata ? windowdata->sdlwindow : NULL;
+
+    SDL_assert(sdltool->instance_id == 0);  // shouldn't be added at this point.
+    if (sdltool->info.subtype != SDL_PEN_TYPE_UNKNOWN) {   // don't tell SDL about it if we don't know its role.
+        sdltool->instance_id = SDL_AddPenDevice(0, NULL, &sdltool->info, sdltool);
+    }
+
+    // According to the docs, this should be followed by a motion event, where we'll send our SDL events.
+}
+
+static void tablet_tool_handle_proximity_out(void *data, struct zwp_tablet_tool_v2 *tool)
+{
+    SDL_WaylandPenTool *sdltool = (SDL_WaylandPenTool *) data;
+    sdltool->tool_focus = NULL;
+
+    if (sdltool->instance_id) {
+        SDL_RemovePenDevice(0, sdltool->instance_id);
+        sdltool->instance_id = 0;
+    }
+}
+
+static void tablet_tool_handle_down(void *data, struct zwp_tablet_tool_v2 *tool, uint32_t serial)
+{
+    SDL_WaylandPenTool *sdltool = (SDL_WaylandPenTool *) data;
+    sdltool->frame_pen_down = 1;
+}
+
+static void tablet_tool_handle_up(void *data, struct zwp_tablet_tool_v2 *tool)
+{
+    SDL_WaylandPenTool *sdltool = (SDL_WaylandPenTool *) data;
+    sdltool->frame_pen_down = 0;
+}
+
+static void tablet_tool_handle_motion(void *data, struct zwp_tablet_tool_v2 *tool, wl_fixed_t sx_w, wl_fixed_t sy_w)
+{
+    SDL_WaylandPenTool *sdltool = (SDL_WaylandPenTool *) data;
+    SDL_Window *window = sdltool->tool_focus;
+    if (window) {
+        const SDL_WindowData *windowdata = window->internal;
+        sdltool->x = (float)(wl_fixed_to_double(sx_w) * windowdata->pointer_scale.x);
+        sdltool->y = (float)(wl_fixed_to_double(sy_w) * windowdata->pointer_scale.y);
+        sdltool->frame_motion_set = true;
+    }
+}
+
+static void tablet_tool_handle_pressure(void *data, struct zwp_tablet_tool_v2 *tool, uint32_t pressure)
+{
+    SDL_WaylandPenTool *sdltool = (SDL_WaylandPenTool *) data;
+    sdltool->frame_axes[SDL_PEN_AXIS_PRESSURE] = ((float) pressure) / 65535.0f;
+    sdltool->frame_axes_set |= (1u << SDL_PEN_AXIS_PRESSURE);
+    if (pressure) {
+        sdltool->frame_axes[SDL_PEN_AXIS_DISTANCE] = 0.0f;
+        sdltool->frame_axes_set |= (1u << SDL_PEN_AXIS_DISTANCE);
+    }
+}
+
+static void tablet_tool_handle_distance(void *data, struct zwp_tablet_tool_v2 *tool, uint32_t distance)
+{
+    SDL_WaylandPenTool *sdltool = (SDL_WaylandPenTool *) data;
+    sdltool->frame_axes[SDL_PEN_AXIS_DISTANCE] = ((float) distance) / 65535.0f;
+    sdltool->frame_axes_set |= (1u << SDL_PEN_AXIS_DISTANCE);
+    if (distance) {
+        sdltool->frame_axes[SDL_PEN_AXIS_PRESSURE] = 0.0f;
+        sdltool->frame_axes_set |= (1u << SDL_PEN_AXIS_PRESSURE);
+    }
+}
+
+static void tablet_tool_handle_tilt(void *data, struct zwp_tablet_tool_v2 *tool, wl_fixed_t xtilt, wl_fixed_t ytilt)
+{
+    SDL_WaylandPenTool *sdltool = (SDL_WaylandPenTool *) data;
+    sdltool->frame_axes[SDL_PEN_AXIS_XTILT] = (float)(wl_fixed_to_double(xtilt));
+    sdltool->frame_axes[SDL_PEN_AXIS_YTILT] = (float)(wl_fixed_to_double(ytilt));
+    sdltool->frame_axes_set |= (1u << SDL_PEN_AXIS_XTILT) | (1u << SDL_PEN_AXIS_YTILT);
+}
+
+static void tablet_tool_handle_button(void *data, struct zwp_tablet_tool_v2 *tool, uint32_t serial, uint32_t button, uint32_t state)
+{
+    SDL_WaylandPenTool *sdltool = (SDL_WaylandPenTool *) data;
+    int sdlbutton;
+
+    switch (button) {
+    // see %{_includedir}/linux/input-event-codes.h
+    case 0x14b: // BTN_STYLUS
+        sdlbutton = 1;
+        break;
+    case 0x14c: // BTN_STYLUS2
+        sdlbutton = 2;
+        break;
+    case 0x149: // BTN_STYLUS3
+        sdlbutton = 3;
+        break;
+    default:
+        return;  // don't care about this button, I guess.
+    }
+
+    SDL_assert((sdlbutton >= 1) && (sdlbutton <= SDL_arraysize(sdltool->frame_buttons)));
+    sdltool->frame_buttons[sdlbutton-1] = (state == ZWP_TABLET_PAD_V2_BUTTON_STATE_PRESSED) ? 1 : 0;
+}
+
+static void tablet_tool_handle_rotation(void *data, struct zwp_tablet_tool_v2 *tool, wl_fixed_t degrees)
+{
+    SDL_WaylandPenTool *sdltool = (SDL_WaylandPenTool *) data;
+    const float rotation = (float)(wl_fixed_to_double(degrees));
+    sdltool->frame_axes[SDL_PEN_AXIS_ROTATION] = (rotation > 180.0f) ? (rotation - 360.0f) : rotation;  // map to -180.0f ... 179.0f range
+    sdltool->frame_axes_set |= (1u << SDL_PEN_AXIS_ROTATION);
+}
+
+static void tablet_tool_handle_slider(void *data, struct zwp_tablet_tool_v2 *tool, int32_t position)
+{
+    SDL_WaylandPenTool *sdltool = (SDL_WaylandPenTool *) data;
+    sdltool->frame_axes[SDL_PEN_AXIS_SLIDER] = position / 65535.f;
+    sdltool->frame_axes_set |= (1u << SDL_PEN_AXIS_SLIDER);
+}
+
+static void tablet_tool_handle_wheel(void *data, struct zwp_tablet_tool_v2 *tool, int32_t degrees, int32_t clicks)
+{
+    // not supported at the moment
+}
+
+static void tablet_tool_handle_frame(void *data, struct zwp_tablet_tool_v2 *tool, uint32_t time)
+{
+    SDL_WaylandPenTool *sdltool = (SDL_WaylandPenTool *) data;
+
+    if (!sdltool->instance_id) {
+        return;  // Not a pen we report on.
+    }
+
+    const Uint64 timestamp = Wayland_GetEventTimestamp(SDL_MS_TO_NS(time));
+    const SDL_PenID instance_id = sdltool->instance_id;
+    SDL_Window *window = sdltool->tool_focus;
+
+    // I don't know if this is necessary (or makes sense), but send motion before pen downs, but after pen ups, so you don't get unexpected lines drawn.
+    if (sdltool->frame_motion_set && (sdltool->frame_pen_down != -1)) {
+        if (sdltool->frame_pen_down) {
+            SDL_SendPenMotion(timestamp, instance_id, window, sdltool->x, sdltool->y);
+            SDL_SendPenTouch(timestamp, instance_id, window, false, true);  // !!! FIXME: how do we know what tip is in use?
+        } else {
+            SDL_SendPenTouch(timestamp, instance_id, window, false, false); // !!! FIXME: how do we know what tip is in use?
+            SDL_SendPenMotion(timestamp, instance_id, window, sdltool->x, sdltool->y);
+        }
+    } else {
+        if (sdltool->frame_pen_down != -1) {
+            SDL_SendPenTouch(timestamp, instance_id, window, false, (sdltool->frame_pen_down != 0));  // !!! FIXME: how do we know what tip is in use?
+        }
+
+        if (sdltool->frame_motion_set) {
+            SDL_SendPenMotion(timestamp, instance_id, window, sdltool->x, sdltool->y);
+        }
+    }
+
+    for (SDL_PenAxis i = 0; i < SDL_PEN_AXIS_COUNT; i++) {
+        if (sdltool->frame_axes_set & (1u << i)) {
+            SDL_SendPenAxis(timestamp, instance_id, window, i, sdltool->frame_axes[i]);
+        }
+    }
+
+    for (int i = 0; i < SDL_arraysize(sdltool->frame_buttons); i++) {
+        const int state = sdltool->frame_buttons[i];
+        if (state != -1) {
+            SDL_SendPenButton(timestamp, instance_id, window, (Uint8)(i + 1), (state != 0));
+            sdltool->frame_buttons[i] = -1;
+        }
+    }
+
+    // reset for next frame.
+    sdltool->frame_pen_down = -1;
+    sdltool->frame_motion_set = false;
+    sdltool->frame_axes_set = 0;
+}
+
+static const struct zwp_tablet_tool_v2_listener tablet_tool_listener = {
+    tablet_tool_handle_type,
+    tablet_tool_handle_hardware_serial,
+    tablet_tool_handle_hardware_id_wacom,
+    tablet_tool_handle_capability,
+    tablet_tool_handle_done,
+    tablet_tool_handle_removed,
+    tablet_tool_handle_proximity_in,
+    tablet_tool_handle_proximity_out,
+    tablet_tool_handle_down,
+    tablet_tool_handle_up,
+    tablet_tool_handle_motion,
+    tablet_tool_handle_pressure,
+    tablet_tool_handle_distance,
+    tablet_tool_handle_tilt,
+    tablet_tool_handle_rotation,
+    tablet_tool_handle_slider,
+    tablet_tool_handle_wheel,
+    tablet_tool_handle_button,
+    tablet_tool_handle_frame
+};
+
+
+static void tablet_seat_handle_tablet_added(void *data, struct zwp_tablet_seat_v2 *seat, struct zwp_tablet_v2 *tablet)
+{
+    // don't care atm.
+}
+
+static void tablet_seat_handle_tool_added(void *data, struct zwp_tablet_seat_v2 *seat, struct zwp_tablet_tool_v2 *tool)
+{
+    SDL_WaylandPenTool *sdltool = SDL_calloc(1, sizeof(*sdltool));
+
+    if (sdltool) {  // if allocation failed, oh well, we won't report this device.
+        sdltool->wltool = tool;
+        sdltool->info.max_tilt = -1.0f;
+        sdltool->info.num_buttons = -1;
+        sdltool->frame_pen_down = -1;
+        for (int i = 0; i < SDL_arraysize(sdltool->frame_buttons); i++) {
+            sdltool->frame_buttons[i] = -1;
+        }
+
+        // this will send a bunch of zwp_tablet_tool_v2 events right up front to tell
+        // us device details, with a "done" event to let us know we have everything.
+        zwp_tablet_tool_v2_add_listener(tool, &tablet_tool_listener, sdltool);
+    }
+}
+
+static void tablet_seat_handle_pad_added(void *data, struct zwp_tablet_seat_v2 *seat, struct zwp_tablet_pad_v2 *pad)
+{
+    // we don't care atm.
+}
+
+static const struct zwp_tablet_seat_v2_listener tablet_seat_listener = {
+    tablet_seat_handle_tablet_added,
+    tablet_seat_handle_tool_added,
+    tablet_seat_handle_pad_added
+};
+
+void Wayland_input_init_tablet_support(struct SDL_WaylandInput *input, struct zwp_tablet_manager_v2 *tablet_manager)
+{
+    if (!tablet_manager || !input->seat) {
+        return;
+    }
+
+    SDL_WaylandTabletInput *tablet_input = SDL_calloc(1, sizeof(*tablet_input));
+    if (!tablet_input) {
+        return;
+    }
+
+    tablet_input->input = input;
+    tablet_input->seat = zwp_tablet_manager_v2_get_tablet_seat(tablet_manager, input->seat);
+
+    zwp_tablet_seat_v2_add_listener(tablet_input->seat, &tablet_seat_listener, tablet_input);
+
+    input->tablet_input = tablet_input;
+}
+
+static void Wayland_remove_all_pens_callback(SDL_PenID instance_id, void *handle, void *userdata)
+{
+    SDL_WaylandPenTool *sdltool = (SDL_WaylandPenTool *) handle;
+    zwp_tablet_tool_v2_destroy(sdltool->wltool);
+    SDL_free(sdltool);
+}
+
+void Wayland_input_quit_tablet_support(struct SDL_WaylandInput *input)
+{
+    SDL_RemoveAllPenDevices(Wayland_remove_all_pens_callback, NULL);
+
+    if (input && input->tablet_input) {
+        zwp_tablet_seat_v2_destroy(input->tablet_input->seat);
+        SDL_free(input->tablet_input);
+        input->tablet_input = NULL;
+    }
+}
+
+void Wayland_input_initialize_seat(SDL_VideoData *d)
+{
+    struct SDL_WaylandInput *input = d->input;
+
+    WAYLAND_wl_list_init(&touch_points);
+
+    if (d->data_device_manager) {
+        Wayland_create_data_device(d);
+    }
+    if (d->primary_selection_device_manager) {
+        Wayland_create_primary_selection_device(d);
+    }
+    if (d->text_input_manager) {
+        Wayland_create_text_input(d);
+    }
+
+    wl_seat_add_listener(input->seat, &seat_listener, input);
+    wl_seat_set_user_data(input->seat, input);
+
+    if (d->tablet_manager) {
+        Wayland_input_init_tablet_support(d->input, d->tablet_manager);
+    }
+
+    WAYLAND_wl_display_flush(d->display);
+}
+
+void Wayland_display_destroy_input(SDL_VideoData *d)
+{
+    struct SDL_WaylandInput *input = d->input;
+
+    if (input->keyboard_timestamps) {
+        zwp_input_timestamps_v1_destroy(input->keyboard_timestamps);
+    }
+    if (input->pointer_timestamps) {
+        zwp_input_timestamps_v1_destroy(input->pointer_timestamps);
+    }
+    if (input->touch_timestamps) {
+        zwp_input_timestamps_v1_destroy(input->touch_timestamps);
+    }
+
+    if (input->data_device) {
+        Wayland_data_device_clear_selection(input->data_device);
+        if (input->data_device->selection_offer) {
+            Wayland_data_offer_destroy(input->data_device->selection_offer);
+        }
+        if (input->data_device->drag_offer) {
+            Wayland_data_offer_destroy(input->data_device->drag_offer);
+        }
+        if (input->data_device->data_device) {
+            if (wl_data_device_get_version(input->data_device->data_device) >= WL_DATA_DEVICE_RELEASE_SINCE_VERSION) {
+                wl_data_device_release(input->data_device->data_device);
+            } else {
+                wl_data_device_destroy(input->data_device->data_device);
+            }
+        }
+        SDL_free(input->data_device);
+    }
+
+    if (input->primary_selection_device) {
+        if (input->primary_selection_device->selection_offer) {
+            Wayland_primary_selection_offer_destroy(input->primary_selection_device->selection_offer);
+        }
+        if (input->primary_selection_device->selection_source) {
+            Wayland_primary_selection_source_destroy(input->primary_selection_device->selection_source);
+        }
+        if (input->primary_selection_device->primary_selection_device) {
+            zwp_primary_selection_device_v1_destroy(input->primary_selection_device->primary_selection_device);
+        }
+        SDL_free(input->primary_selection_device);
+    }
+
+    if (input->text_input) {
+        zwp_text_input_v3_destroy(input->text_input->text_input);
+        SDL_free(input->text_input);
+    }
+
+    if (input->keyboard) {
+        if (wl_keyboard_get_version(input->keyboard) >= WL_KEYBOARD_RELEASE_SINCE_VERSION) {
+            wl_keyboard_release(input->keyboard);
+        } else {
+            wl_keyboard_destroy(input->keyboard);
+        }
+    }
+
+    if (input->relative_pointer) {
+        zwp_relative_pointer_v1_destroy(input->relative_pointer);
+    }
+
+    if (input->cursor_shape) {
+        wp_cursor_shape_device_v1_destroy(input->cursor_shape);
+    }
+
+    if (input->pointer) {
+        if (wl_pointer_get_version(input->pointer) >= WL_POINTER_RELEASE_SINCE_VERSION) {
+            wl_pointer_release(input->pointer);
+        } else {
+            wl_pointer_destroy(input->pointer);
+        }
+    }
+
+    if (input->touch) {
+        struct SDL_WaylandTouchPoint *tp, *tmp;
+
+        SDL_DelTouch(1);
+        if (wl_touch_get_version(input->touch) >= WL_TOUCH_RELEASE_SINCE_VERSION) {
+            wl_touch_release(input->touch);
+        } else {
+            wl_touch_destroy(input->touch);
+        }
+
+        wl_list_for_each_safe (tp, tmp, &touch_points, link) {
+            WAYLAND_wl_list_remove(&tp->link);
+            SDL_free(tp);
+        }
+    }
+
+    if (input->tablet_input) {
+        Wayland_input_quit_tablet_support(input);
+    }
+
+    if (input->seat) {
+        if (wl_seat_get_version(input->seat) >= WL_SEAT_RELEASE_SINCE_VERSION) {
+            wl_seat_release(input->seat);
+        } else {
+            wl_seat_destroy(input->seat);
+        }
+    }
+
+    if (input->xkb.compose_state) {
+        WAYLAND_xkb_compose_state_unref(input->xkb.compose_state);
+    }
+
+    if (input->xkb.compose_table) {
+        WAYLAND_xkb_compose_table_unref(input->xkb.compose_table);
+    }
+
+    if (input->xkb.state) {
+        WAYLAND_xkb_state_unref(input->xkb.state);
+    }
+
+    if (input->xkb.keymap) {
+        WAYLAND_xkb_keymap_unref(input->xkb.keymap);
+    }
+
+    SDL_free(input);
+    d->input = NULL;
+}
+
+bool Wayland_input_enable_relative_pointer(struct SDL_WaylandInput *input)
+{
+    SDL_VideoDevice *vd = SDL_GetVideoDevice();
+    SDL_VideoData *d = input->display;
+    SDL_Window *window;
+
+    if (!d->relative_pointer_manager) {
+        return false;
+    }
+
+    if (!d->pointer_constraints) {
+        return false;
+    }
+
+    if (!input->pointer) {
+        return false;
+    }
+
+    /* If we have a pointer confine active, we must destroy it here because
+     * creating a locked pointer otherwise would be a protocol error.
+     */
+    for (window = vd->windows; window; window = window->next) {
+        pointer_confine_destroy(window);
+    }
+
+    for (window = vd->windows; window; window = window->next) {
+        Wayland_input_lock_pointer(input, window);
+    }
+
+    d->relative_mouse_mode = 1;
+
+    return true;
+}
+
+bool Wayland_input_disable_relative_pointer(struct SDL_WaylandInput *input)
+{
+    SDL_VideoDevice *vd = SDL_GetVideoDevice();
+    SDL_VideoData *d = input->display;
+    SDL_Window *window;
+
+    for (window = vd->windows; window; window = window->next) {
+        Wayland_input_unlock_pointer(input, window);
+    }
+
+    d->relative_mouse_mode = 0;
+
+    for (window = vd->windows; window; window = window->next) {
+        Wayland_input_confine_pointer(input, window);
+    }
+
+    return true;
+}
+
+bool Wayland_input_confine_pointer(struct SDL_WaylandInput *input, SDL_Window *window)
+{
+    SDL_WindowData *w = window->internal;
+    SDL_VideoData *d = input->display;
+    struct wl_region *confine_rect;
+
+    if (!d->pointer_constraints) {
+        return SDL_SetError("Failed to confine pointer: compositor lacks support for the required zwp_pointer_constraints_v1 protocol");
+    }
+
+    if (!input->pointer) {
+        return SDL_SetError("No pointer to confine");
+    }
+
+    /* A confine may already be active, in which case we should destroy it and
+     * create a new one.
+     */
+    pointer_confine_destroy(window);
+
+    /* We cannot create a confine if the pointer is already locked. Defer until
+     * the pointer is unlocked.
+     */
+    if (d->relative_mouse_mode) {
+        return true;
+    }
+
+    // Don't confine the pointer if it shouldn't be confined.
+    if (SDL_RectEmpty(&window->mouse_rect) && !(window->flags & SDL_WINDOW_MOUSE_GRABBED)) {
+        return true;
+    }
+
+    if (SDL_RectEmpty(&window->mouse_rect)) {
+        confine_rect = NULL;
+    } else {
+        SDL_Rect scaled_mouse_rect;
+
+        scaled_mouse_rect.x = (int)SDL_floor(window->mouse_rect.x / w->pointer_scale.x);
+        scaled_mouse_rect.y = (int)SDL_floor(window->mouse_rect.y / w->pointer_scale.y);
+        scaled_mouse_rect.w = (int)SDL_ceil(window->mouse_rect.w / w->pointer_scale.x);
+        scaled_mouse_rect.h = (int)SDL_ceil(window->mouse_rect.h / w->pointer_scale.y);
+
+        confine_rect = wl_compositor_create_region(d->compositor);
+        wl_region_add(confine_rect,
+                      scaled_mouse_rect.x,
+                      scaled_mouse_rect.y,
+                      scaled_mouse_rect.w,
+                      scaled_mouse_rect.h);
+    }
+
+    struct zwp_confined_pointer_v1 *confined_pointer =
+        zwp_pointer_constraints_v1_confine_pointer(d->pointer_constraints,
+                                                   w->surface,
+                                                   input->pointer,
+                                                   confine_rect,
+                                                   ZWP_POINTER_CONSTRAINTS_V1_LIFETIME_PERSISTENT);
+    zwp_confined_pointer_v1_add_listener(confined_pointer,
+                                         &confined_pointer_listener,
+                                         window);
+
+    if (confine_rect) {
+        wl_region_destroy(confine_rect);
+    }
+
+    w->confined_pointer = confined_pointer;
+    return true;
+}
+
+bool Wayland_input_unconfine_pointer(struct SDL_WaylandInput *input, SDL_Window *window)
+{
+    pointer_confine_destroy(window);
+    return true;
+}
+
+bool Wayland_input_grab_keyboard(SDL_Window *window, struct SDL_WaylandInput *input)
+{
+    SDL_WindowData *w = window->internal;
+    SDL_VideoData *d = input->display;
+
+    if (!d->key_inhibitor_manager) {
+        return SDL_SetError("Failed to grab keyboard: compositor lacks support for the required zwp_keyboard_shortcuts_inhibit_manager_v1 protocol");
+    }
+
+    if (w->key_inhibitor) {
+        return true;
+    }
+
+    w->key_inhibitor =
+        zwp_keyboard_shortcuts_inhibit_manager_v1_inhibit_shortcuts(d->key_inhibitor_manager,
+                                                                    w->surface,
+                                                                    input->seat);
+
+    return true;
+}
+
+bool Wayland_input_ungrab_keyboard(SDL_Window *window)
+{
+    SDL_WindowData *w = window->internal;
+
+    if (w->key_inhibitor) {
+        zwp_keyboard_shortcuts_inhibitor_v1_destroy(w->key_inhibitor);
+        w->key_inhibitor = NULL;
+    }
+
+    return true;
+}
+
+void Wayland_UpdateImplicitGrabSerial(struct SDL_WaylandInput *input, Uint32 serial)
+{
+    if (serial > input->last_implicit_grab_serial) {
+        input->last_implicit_grab_serial = serial;
+        Wayland_data_device_set_serial(input->data_device, serial);
+        Wayland_primary_selection_device_set_serial(input->primary_selection_device, serial);
+    }
+}
+
+#endif // SDL_VIDEO_DRIVER_WAYLAND