Initial commitHEADmain

1 files changed, 743 insertions, 0 deletions

diff --git a/SDL-3.2.8/src/core/linux/SDL_ibus.c b/SDL-3.2.8/src/core/linux/SDL_ibus.c
new file mode 100644
index 0000000..ea58ed5
--- /dev/null
+++ b/SDL-3.2.8/src/core/linux/SDL_ibus.c
@@ -0,0 +1,743 @@
+/*
+  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 HAVE_IBUS_IBUS_H
+#include "SDL_ibus.h"
+#include "SDL_dbus.h"
+
+#ifdef SDL_USE_LIBDBUS
+
+#include "../../video/SDL_sysvideo.h"
+#include "../../events/SDL_keyboard_c.h"
+
+#ifdef SDL_VIDEO_DRIVER_X11
+#include "../../video/x11/SDL_x11video.h"
+#endif
+
+#include <sys/inotify.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+static const char IBUS_PATH[] = "/org/freedesktop/IBus";
+
+static const char IBUS_SERVICE[] = "org.freedesktop.IBus";
+static const char IBUS_INTERFACE[] = "org.freedesktop.IBus";
+static const char IBUS_INPUT_INTERFACE[] = "org.freedesktop.IBus.InputContext";
+
+static const char IBUS_PORTAL_SERVICE[] = "org.freedesktop.portal.IBus";
+static const char IBUS_PORTAL_INTERFACE[] = "org.freedesktop.IBus.Portal";
+static const char IBUS_PORTAL_INPUT_INTERFACE[] = "org.freedesktop.IBus.InputContext";
+
+static const char *ibus_service = NULL;
+static const char *ibus_interface = NULL;
+static const char *ibus_input_interface = NULL;
+static char *input_ctx_path = NULL;
+static SDL_Rect ibus_cursor_rect = { 0, 0, 0, 0 };
+static DBusConnection *ibus_conn = NULL;
+static bool ibus_is_portal_interface = false;
+static char *ibus_addr_file = NULL;
+static int inotify_fd = -1, inotify_wd = -1;
+
+static Uint32 IBus_ModState(void)
+{
+    Uint32 ibus_mods = 0;
+    SDL_Keymod sdl_mods = SDL_GetModState();
+
+    // Not sure about MOD3, MOD4 and HYPER mappings
+    if (sdl_mods & SDL_KMOD_LSHIFT) {
+        ibus_mods |= IBUS_SHIFT_MASK;
+    }
+    if (sdl_mods & SDL_KMOD_CAPS) {
+        ibus_mods |= IBUS_LOCK_MASK;
+    }
+    if (sdl_mods & SDL_KMOD_LCTRL) {
+        ibus_mods |= IBUS_CONTROL_MASK;
+    }
+    if (sdl_mods & SDL_KMOD_LALT) {
+        ibus_mods |= IBUS_MOD1_MASK;
+    }
+    if (sdl_mods & SDL_KMOD_NUM) {
+        ibus_mods |= IBUS_MOD2_MASK;
+    }
+    if (sdl_mods & SDL_KMOD_MODE) {
+        ibus_mods |= IBUS_MOD5_MASK;
+    }
+    if (sdl_mods & SDL_KMOD_LGUI) {
+        ibus_mods |= IBUS_SUPER_MASK;
+    }
+    if (sdl_mods & SDL_KMOD_RGUI) {
+        ibus_mods |= IBUS_META_MASK;
+    }
+
+    return ibus_mods;
+}
+
+static bool IBus_EnterVariant(DBusConnection *conn, DBusMessageIter *iter, SDL_DBusContext *dbus,
+                                  DBusMessageIter *inside, const char *struct_id, size_t id_size)
+{
+    DBusMessageIter sub;
+    if (dbus->message_iter_get_arg_type(iter) != DBUS_TYPE_VARIANT) {
+        return false;
+    }
+
+    dbus->message_iter_recurse(iter, &sub);
+
+    if (dbus->message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
+        return false;
+    }
+
+    dbus->message_iter_recurse(&sub, inside);
+
+    if (dbus->message_iter_get_arg_type(inside) != DBUS_TYPE_STRING) {
+        return false;
+    }
+
+    dbus->message_iter_get_basic(inside, &struct_id);
+    if (!struct_id || SDL_strncmp(struct_id, struct_id, id_size) != 0) {
+        return false;
+    }
+    return true;
+}
+
+static bool IBus_GetDecorationPosition(DBusConnection *conn, DBusMessageIter *iter, SDL_DBusContext *dbus,
+                                           Uint32 *start_pos, Uint32 *end_pos)
+{
+    DBusMessageIter sub1, sub2, array;
+
+    if (!IBus_EnterVariant(conn, iter, dbus, &sub1, "IBusText", sizeof("IBusText"))) {
+        return false;
+    }
+
+    dbus->message_iter_next(&sub1);
+    dbus->message_iter_next(&sub1);
+    dbus->message_iter_next(&sub1);
+
+    if (!IBus_EnterVariant(conn, &sub1, dbus, &sub2, "IBusAttrList", sizeof("IBusAttrList"))) {
+        return false;
+    }
+
+    dbus->message_iter_next(&sub2);
+    dbus->message_iter_next(&sub2);
+
+    if (dbus->message_iter_get_arg_type(&sub2) != DBUS_TYPE_ARRAY) {
+        return false;
+    }
+
+    dbus->message_iter_recurse(&sub2, &array);
+
+    while (dbus->message_iter_get_arg_type(&array) == DBUS_TYPE_VARIANT) {
+        DBusMessageIter sub;
+        if (IBus_EnterVariant(conn, &array, dbus, &sub, "IBusAttribute", sizeof("IBusAttribute"))) {
+            Uint32 type;
+
+            dbus->message_iter_next(&sub);
+            dbus->message_iter_next(&sub);
+
+            // From here on, the structure looks like this:
+            // Uint32 type: 1=underline, 2=foreground, 3=background
+            // Uint32 value: for underline it's 0=NONE, 1=SINGLE, 2=DOUBLE,
+            // 3=LOW,  4=ERROR
+            // for foreground and background it's a color
+            // Uint32 start_index: starting position for the style (utf8-char)
+            // Uint32 end_index: end position for the style (utf8-char)
+
+            dbus->message_iter_get_basic(&sub, &type);
+            // We only use the background type to determine the selection
+            if (type == 3) {
+                Uint32 start = -1;
+                dbus->message_iter_next(&sub);
+                dbus->message_iter_next(&sub);
+                if (dbus->message_iter_get_arg_type(&sub) == DBUS_TYPE_UINT32) {
+                    dbus->message_iter_get_basic(&sub, &start);
+                    dbus->message_iter_next(&sub);
+                    if (dbus->message_iter_get_arg_type(&sub) == DBUS_TYPE_UINT32) {
+                        dbus->message_iter_get_basic(&sub, end_pos);
+                        *start_pos = start;
+                        return true;
+                    }
+                }
+            }
+        }
+        dbus->message_iter_next(&array);
+    }
+    return false;
+}
+
+static const char *IBus_GetVariantText(DBusConnection *conn, DBusMessageIter *iter, SDL_DBusContext *dbus)
+{
+    // The text we need is nested weirdly, use dbus-monitor to see the structure better
+    const char *text = NULL;
+    DBusMessageIter sub;
+
+    if (!IBus_EnterVariant(conn, iter, dbus, &sub, "IBusText", sizeof("IBusText"))) {
+        return NULL;
+    }
+
+    dbus->message_iter_next(&sub);
+    dbus->message_iter_next(&sub);
+
+    if (dbus->message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) {
+        return NULL;
+    }
+    dbus->message_iter_get_basic(&sub, &text);
+
+    return text;
+}
+
+static bool IBus_GetVariantCursorPos(DBusConnection *conn, DBusMessageIter *iter, SDL_DBusContext *dbus,
+                                         Uint32 *pos)
+{
+    dbus->message_iter_next(iter);
+
+    if (dbus->message_iter_get_arg_type(iter) != DBUS_TYPE_UINT32) {
+        return false;
+    }
+
+    dbus->message_iter_get_basic(iter, pos);
+
+    return true;
+}
+
+static DBusHandlerResult IBus_MessageHandler(DBusConnection *conn, DBusMessage *msg, void *user_data)
+{
+    SDL_DBusContext *dbus = (SDL_DBusContext *)user_data;
+
+    if (dbus->message_is_signal(msg, ibus_input_interface, "CommitText")) {
+        DBusMessageIter iter;
+        const char *text;
+
+        dbus->message_iter_init(msg, &iter);
+        text = IBus_GetVariantText(conn, &iter, dbus);
+
+        SDL_SendKeyboardText(text);
+
+        return DBUS_HANDLER_RESULT_HANDLED;
+    }
+
+    if (dbus->message_is_signal(msg, ibus_input_interface, "UpdatePreeditText")) {
+        DBusMessageIter iter;
+        const char *text;
+
+        dbus->message_iter_init(msg, &iter);
+        text = IBus_GetVariantText(conn, &iter, dbus);
+
+        if (text) {
+            Uint32 pos, start_pos, end_pos;
+            bool has_pos = false;
+            bool has_dec_pos = false;
+
+            dbus->message_iter_init(msg, &iter);
+            has_dec_pos = IBus_GetDecorationPosition(conn, &iter, dbus, &start_pos, &end_pos);
+            if (!has_dec_pos) {
+                dbus->message_iter_init(msg, &iter);
+                has_pos = IBus_GetVariantCursorPos(conn, &iter, dbus, &pos);
+            }
+
+            if (has_dec_pos) {
+                SDL_SendEditingText(text, start_pos, end_pos - start_pos);
+            } else if (has_pos) {
+                SDL_SendEditingText(text, pos, -1);
+            } else {
+                SDL_SendEditingText(text, -1, -1);
+            }
+        }
+
+        SDL_IBus_UpdateTextInputArea(SDL_GetKeyboardFocus());
+
+        return DBUS_HANDLER_RESULT_HANDLED;
+    }
+
+    if (dbus->message_is_signal(msg, ibus_input_interface, "HidePreeditText")) {
+        SDL_SendEditingText("", 0, 0);
+        return DBUS_HANDLER_RESULT_HANDLED;
+    }
+
+    return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
+}
+
+static char *IBus_ReadAddressFromFile(const char *file_path)
+{
+    char addr_buf[1024];
+    bool success = false;
+    FILE *addr_file;
+
+    addr_file = fopen(file_path, "r");
+    if (!addr_file) {
+        return NULL;
+    }
+
+    while (fgets(addr_buf, sizeof(addr_buf), addr_file)) {
+        if (SDL_strncmp(addr_buf, "IBUS_ADDRESS=", sizeof("IBUS_ADDRESS=") - 1) == 0) {
+            size_t sz = SDL_strlen(addr_buf);
+            if (addr_buf[sz - 1] == '\n') {
+                addr_buf[sz - 1] = 0;
+            }
+            if (addr_buf[sz - 2] == '\r') {
+                addr_buf[sz - 2] = 0;
+            }
+            success = true;
+            break;
+        }
+    }
+
+    (void)fclose(addr_file);
+
+    if (success) {
+        return SDL_strdup(addr_buf + (sizeof("IBUS_ADDRESS=") - 1));
+    } else {
+        return NULL;
+    }
+}
+
+static char *IBus_GetDBusAddressFilename(void)
+{
+    SDL_DBusContext *dbus;
+    const char *disp_env;
+    char config_dir[PATH_MAX];
+    char *display = NULL;
+    const char *addr;
+    const char *conf_env;
+    char *key;
+    char file_path[PATH_MAX];
+    const char *host;
+    char *disp_num, *screen_num;
+
+    if (ibus_addr_file) {
+        return SDL_strdup(ibus_addr_file);
+    }
+
+    dbus = SDL_DBus_GetContext();
+    if (!dbus) {
+        return NULL;
+    }
+
+    // Use this environment variable if it exists.
+    addr = SDL_getenv("IBUS_ADDRESS");
+    if (addr && *addr) {
+        return SDL_strdup(addr);
+    }
+
+    /* Otherwise, we have to get the hostname, display, machine id, config dir
+       and look up the address from a filepath using all those bits, eek. */
+    disp_env = SDL_getenv("DISPLAY");
+
+    if (!disp_env || !*disp_env) {
+        display = SDL_strdup(":0.0");
+    } else {
+        display = SDL_strdup(disp_env);
+    }
+
+    host = display;
+    disp_num = SDL_strrchr(display, ':');
+    screen_num = SDL_strrchr(display, '.');
+
+    if (!disp_num) {
+        SDL_free(display);
+        return NULL;
+    }
+
+    *disp_num = 0;
+    disp_num++;
+
+    if (screen_num) {
+        *screen_num = 0;
+    }
+
+    if (!*host) {
+        const char *session = SDL_getenv("XDG_SESSION_TYPE");
+        if (session && SDL_strcmp(session, "wayland") == 0) {
+            host = "unix-wayland";
+        } else {
+            host = "unix";
+        }
+    }
+
+    SDL_memset(config_dir, 0, sizeof(config_dir));
+
+    conf_env = SDL_getenv("XDG_CONFIG_HOME");
+    if (conf_env && *conf_env) {
+        SDL_strlcpy(config_dir, conf_env, sizeof(config_dir));
+    } else {
+        const char *home_env = SDL_getenv("HOME");
+        if (!home_env || !*home_env) {
+            SDL_free(display);
+            return NULL;
+        }
+        (void)SDL_snprintf(config_dir, sizeof(config_dir), "%s/.config", home_env);
+    }
+
+    key = SDL_DBus_GetLocalMachineId();
+
+    if (!key) {
+        SDL_free(display);
+        return NULL;
+    }
+
+    SDL_memset(file_path, 0, sizeof(file_path));
+    (void)SDL_snprintf(file_path, sizeof(file_path), "%s/ibus/bus/%s-%s-%s",
+                       config_dir, key, host, disp_num);
+    dbus->free(key);
+    SDL_free(display);
+
+    return SDL_strdup(file_path);
+}
+
+static bool IBus_CheckConnection(SDL_DBusContext *dbus);
+
+static void SDLCALL IBus_SetCapabilities(void *data, const char *name, const char *old_val,
+                                         const char *hint)
+{
+    SDL_DBusContext *dbus = SDL_DBus_GetContext();
+
+    if (IBus_CheckConnection(dbus)) {
+        Uint32 caps = IBUS_CAP_FOCUS;
+
+        if (hint && SDL_strstr(hint, "composition")) {
+            caps |= IBUS_CAP_PREEDIT_TEXT;
+        }
+        if (hint && SDL_strstr(hint, "candidates")) {
+            // FIXME, turn off native candidate rendering
+        }
+
+        SDL_DBus_CallVoidMethodOnConnection(ibus_conn, ibus_service, input_ctx_path, ibus_input_interface, "SetCapabilities",
+                                            DBUS_TYPE_UINT32, &caps, DBUS_TYPE_INVALID);
+    }
+}
+
+static bool IBus_SetupConnection(SDL_DBusContext *dbus, const char *addr)
+{
+    const char *client_name = "SDL3_Application";
+    const char *path = NULL;
+    bool result = false;
+    DBusObjectPathVTable ibus_vtable;
+
+    SDL_zero(ibus_vtable);
+    ibus_vtable.message_function = &IBus_MessageHandler;
+
+    /* try the portal interface first. Modern systems have this in general,
+       and sandbox things like FlakPak and Snaps, etc, require it. */
+
+    ibus_is_portal_interface = true;
+    ibus_service = IBUS_PORTAL_SERVICE;
+    ibus_interface = IBUS_PORTAL_INTERFACE;
+    ibus_input_interface = IBUS_PORTAL_INPUT_INTERFACE;
+    ibus_conn = dbus->session_conn;
+
+    result = SDL_DBus_CallMethodOnConnection(ibus_conn, ibus_service, IBUS_PATH, ibus_interface, "CreateInputContext",
+                                             DBUS_TYPE_STRING, &client_name, DBUS_TYPE_INVALID,
+                                             DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_INVALID);
+    if (!result) {
+        ibus_is_portal_interface = false;
+        ibus_service = IBUS_SERVICE;
+        ibus_interface = IBUS_INTERFACE;
+        ibus_input_interface = IBUS_INPUT_INTERFACE;
+        ibus_conn = dbus->connection_open_private(addr, NULL);
+
+        if (!ibus_conn) {
+            return false; // oh well.
+        }
+
+        dbus->connection_flush(ibus_conn);
+
+        if (!dbus->bus_register(ibus_conn, NULL)) {
+            ibus_conn = NULL;
+            return false;
+        }
+
+        dbus->connection_flush(ibus_conn);
+
+        result = SDL_DBus_CallMethodOnConnection(ibus_conn, ibus_service, IBUS_PATH, ibus_interface, "CreateInputContext",
+                                                 DBUS_TYPE_STRING, &client_name, DBUS_TYPE_INVALID,
+                                                 DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_INVALID);
+    } else {
+        // re-using dbus->session_conn
+        dbus->connection_ref(ibus_conn);
+    }
+
+    if (result) {
+        char matchstr[128];
+        (void)SDL_snprintf(matchstr, sizeof(matchstr), "type='signal',interface='%s'", ibus_input_interface);
+        SDL_free(input_ctx_path);
+        input_ctx_path = SDL_strdup(path);
+        SDL_AddHintCallback(SDL_HINT_IME_IMPLEMENTED_UI, IBus_SetCapabilities, NULL);
+        dbus->bus_add_match(ibus_conn, matchstr, NULL);
+        dbus->connection_try_register_object_path(ibus_conn, input_ctx_path, &ibus_vtable, dbus, NULL);
+        dbus->connection_flush(ibus_conn);
+    }
+
+    SDL_Window *window = SDL_GetKeyboardFocus();
+    if (SDL_TextInputActive(window)) {
+        SDL_IBus_SetFocus(true);
+        SDL_IBus_UpdateTextInputArea(window);
+    } else {
+        SDL_IBus_SetFocus(false);
+    }
+    return result;
+}
+
+static bool IBus_CheckConnection(SDL_DBusContext *dbus)
+{
+    if (!dbus) {
+        return false;
+    }
+
+    if (ibus_conn && dbus->connection_get_is_connected(ibus_conn)) {
+        return true;
+    }
+
+    if (inotify_fd > 0 && inotify_wd > 0) {
+        char buf[1024];
+        ssize_t readsize = read(inotify_fd, buf, sizeof(buf));
+        if (readsize > 0) {
+
+            char *p;
+            bool file_updated = false;
+
+            for (p = buf; p < buf + readsize; /**/) {
+                struct inotify_event *event = (struct inotify_event *)p;
+                if (event->len > 0) {
+                    char *addr_file_no_path = SDL_strrchr(ibus_addr_file, '/');
+                    if (!addr_file_no_path) {
+                        return false;
+                    }
+
+                    if (SDL_strcmp(addr_file_no_path + 1, event->name) == 0) {
+                        file_updated = true;
+                        break;
+                    }
+                }
+
+                p += sizeof(struct inotify_event) + event->len;
+            }
+
+            if (file_updated) {
+                char *addr = IBus_ReadAddressFromFile(ibus_addr_file);
+                if (addr) {
+                    bool result = IBus_SetupConnection(dbus, addr);
+                    SDL_free(addr);
+                    return result;
+                }
+            }
+        }
+    }
+
+    return false;
+}
+
+bool SDL_IBus_Init(void)
+{
+    bool result = false;
+    SDL_DBusContext *dbus = SDL_DBus_GetContext();
+
+    if (dbus) {
+        char *addr_file = IBus_GetDBusAddressFilename();
+        char *addr;
+        char *addr_file_dir;
+
+        if (!addr_file) {
+            return false;
+        }
+
+        addr = IBus_ReadAddressFromFile(addr_file);
+        if (!addr) {
+            SDL_free(addr_file);
+            return false;
+        }
+
+        if (ibus_addr_file) {
+            SDL_free(ibus_addr_file);
+        }
+        ibus_addr_file = SDL_strdup(addr_file);
+
+        if (inotify_fd < 0) {
+            inotify_fd = inotify_init();
+            fcntl(inotify_fd, F_SETFL, O_NONBLOCK);
+        }
+
+        addr_file_dir = SDL_strrchr(addr_file, '/');
+        if (addr_file_dir) {
+            *addr_file_dir = 0;
+        }
+
+        inotify_wd = inotify_add_watch(inotify_fd, addr_file, IN_CREATE | IN_MODIFY);
+        SDL_free(addr_file);
+
+        result = IBus_SetupConnection(dbus, addr);
+        SDL_free(addr);
+
+        // don't use the addr_file if using the portal interface.
+        if (result && ibus_is_portal_interface) {
+            if (inotify_fd > 0) {
+                if (inotify_wd > 0) {
+                    inotify_rm_watch(inotify_fd, inotify_wd);
+                    inotify_wd = -1;
+                }
+                close(inotify_fd);
+                inotify_fd = -1;
+            }
+        }
+    }
+
+    return result;
+}
+
+void SDL_IBus_Quit(void)
+{
+    SDL_DBusContext *dbus;
+
+    if (input_ctx_path) {
+        SDL_free(input_ctx_path);
+        input_ctx_path = NULL;
+    }
+
+    if (ibus_addr_file) {
+        SDL_free(ibus_addr_file);
+        ibus_addr_file = NULL;
+    }
+
+    dbus = SDL_DBus_GetContext();
+
+    // if using portal, ibus_conn == session_conn; don't release it here.
+    if (dbus && ibus_conn && !ibus_is_portal_interface) {
+        dbus->connection_close(ibus_conn);
+        dbus->connection_unref(ibus_conn);
+    }
+
+    ibus_conn = NULL;
+    ibus_service = NULL;
+    ibus_interface = NULL;
+    ibus_input_interface = NULL;
+    ibus_is_portal_interface = false;
+
+    if (inotify_fd > 0 && inotify_wd > 0) {
+        inotify_rm_watch(inotify_fd, inotify_wd);
+        inotify_wd = -1;
+    }
+
+    // !!! FIXME: should we close(inotify_fd) here?
+
+    SDL_RemoveHintCallback(SDL_HINT_IME_IMPLEMENTED_UI, IBus_SetCapabilities, NULL);
+
+    SDL_memset(&ibus_cursor_rect, 0, sizeof(ibus_cursor_rect));
+}
+
+static void IBus_SimpleMessage(const char *method)
+{
+    SDL_DBusContext *dbus = SDL_DBus_GetContext();
+
+    if ((input_ctx_path) && (IBus_CheckConnection(dbus))) {
+        SDL_DBus_CallVoidMethodOnConnection(ibus_conn, ibus_service, input_ctx_path, ibus_input_interface, method, DBUS_TYPE_INVALID);
+    }
+}
+
+void SDL_IBus_SetFocus(bool focused)
+{
+    const char *method = focused ? "FocusIn" : "FocusOut";
+    IBus_SimpleMessage(method);
+}
+
+void SDL_IBus_Reset(void)
+{
+    IBus_SimpleMessage("Reset");
+}
+
+bool SDL_IBus_ProcessKeyEvent(Uint32 keysym, Uint32 keycode, bool down)
+{
+    Uint32 result = 0;
+    SDL_DBusContext *dbus = SDL_DBus_GetContext();
+
+    if (IBus_CheckConnection(dbus)) {
+        Uint32 mods = IBus_ModState();
+        Uint32 ibus_keycode = keycode - 8;
+        if (!down) {
+            mods |= (1 << 30); // IBUS_RELEASE_MASK
+        }
+        if (!SDL_DBus_CallMethodOnConnection(ibus_conn, ibus_service, input_ctx_path, ibus_input_interface, "ProcessKeyEvent",
+                                             DBUS_TYPE_UINT32, &keysym, DBUS_TYPE_UINT32, &ibus_keycode, DBUS_TYPE_UINT32, &mods, DBUS_TYPE_INVALID,
+                                             DBUS_TYPE_BOOLEAN, &result, DBUS_TYPE_INVALID)) {
+            result = 0;
+        }
+    }
+
+    SDL_IBus_UpdateTextInputArea(SDL_GetKeyboardFocus());
+
+    return (result != 0);
+}
+
+void SDL_IBus_UpdateTextInputArea(SDL_Window *window)
+{
+    int x = 0, y = 0;
+    SDL_DBusContext *dbus;
+
+    if (!window) {
+        return;
+    }
+
+    // We'll use a square at the text input cursor location for the ibus_cursor
+    ibus_cursor_rect.x = window->text_input_rect.x + window->text_input_cursor;
+    ibus_cursor_rect.y = window->text_input_rect.y;
+    ibus_cursor_rect.w = window->text_input_rect.h;
+    ibus_cursor_rect.h = window->text_input_rect.h;
+
+    SDL_GetWindowPosition(window, &x, &y);
+
+#ifdef SDL_VIDEO_DRIVER_X11
+    {
+        SDL_PropertiesID props = SDL_GetWindowProperties(window);
+        Display *x_disp = (Display *)SDL_GetPointerProperty(props, SDL_PROP_WINDOW_X11_DISPLAY_POINTER, NULL);
+        int x_screen = SDL_GetNumberProperty(props, SDL_PROP_WINDOW_X11_SCREEN_NUMBER, 0);
+        Window x_win = SDL_GetNumberProperty(props, SDL_PROP_WINDOW_X11_WINDOW_NUMBER, 0);
+        Window unused;
+
+        if (x_disp && x_win) {
+            X11_XTranslateCoordinates(x_disp, x_win, RootWindow(x_disp, x_screen), 0, 0, &x, &y, &unused);
+        }
+    }
+#endif
+
+    x += ibus_cursor_rect.x;
+    y += ibus_cursor_rect.y;
+
+    dbus = SDL_DBus_GetContext();
+
+    if (IBus_CheckConnection(dbus)) {
+        SDL_DBus_CallVoidMethodOnConnection(ibus_conn, ibus_service, input_ctx_path, ibus_input_interface, "SetCursorLocation",
+                                            DBUS_TYPE_INT32, &x, DBUS_TYPE_INT32, &y, DBUS_TYPE_INT32, &ibus_cursor_rect.w, DBUS_TYPE_INT32, &ibus_cursor_rect.h, DBUS_TYPE_INVALID);
+    }
+}
+
+void SDL_IBus_PumpEvents(void)
+{
+    SDL_DBusContext *dbus = SDL_DBus_GetContext();
+
+    if (IBus_CheckConnection(dbus)) {
+        dbus->connection_read_write(ibus_conn, 0);
+
+        while (dbus->connection_dispatch(ibus_conn) == DBUS_DISPATCH_DATA_REMAINS) {
+            // Do nothing, actual work happens in IBus_MessageHandler
+        }
+    }
+}
+
+#endif // SDL_USE_LIBDBUS
+
+#endif