Merge pull request #87479 from kitbdev/apply-ime

Fix TextEdit IME issues

doc/classes/TextEdit.xml

@@ -101,6 +101,12 @@
 				Adjust the viewport so the caret is visible.
 			</description>
 		</method>
+		<method name="apply_ime">
+			<return type="void" />
+			<description>
+				Applies text from the [url=https://en.wikipedia.org/wiki/Input_method]Input Method Editor[/url] (IME) to each caret and closes the IME if it is open.
+			</description>
+		</method>
 		<method name="backspace">
 			<return type="void" />
 			<param index="0" name="caret_index" type="int" default="-1" />
@@ -114,6 +120,12 @@
 				Starts a multipart edit. All edits will be treated as one action until [method end_complex_operation] is called.
 			</description>
 		</method>
+		<method name="cancel_ime">
+			<return type="void" />
+			<description>
+				Closes the [url=https://en.wikipedia.org/wiki/Input_method]Input Method Editor[/url] (IME) if it is open. Any text in the IME will be lost.
+			</description>
+		</method>
 		<method name="center_viewport_to_caret">
 			<return type="void" />
 			<param index="0" name="caret_index" type="int" default="0" />
@@ -611,7 +623,7 @@
 		<method name="has_ime_text" qualifiers="const">
 			<return type="bool" />
 			<description>
-				Returns if the user has IME text.
+				Returns [code]true[/code] if the user has text in the [url=https://en.wikipedia.org/wiki/Input_method]Input Method Editor[/url] (IME).
 			</description>
 		</method>
 		<method name="has_redo" qualifiers="const">

editor/plugins/script_text_editor.cpp

@@ -1272,6 +1272,7 @@ void ScriptTextEditor::_gutter_clicked(int p_line, int p_gutter) {
 
 void ScriptTextEditor::_edit_option(int p_op) {
 	CodeEdit *tx = code_editor->get_text_editor();
+	tx->apply_ime();
 
 	switch (p_op) {
 		case EDIT_UNDO: {
@@ -1962,6 +1963,8 @@ void ScriptTextEditor::_text_edit_gui_input(const Ref<InputEvent> &ev) {
 	}
 
 	if (create_menu) {
+		tx->apply_ime();
+
 		Point2i pos = tx->get_line_column_at_pos(local_pos);
 		int row = pos.y;
 		int col = pos.x;

editor/plugins/text_editor.cpp

@@ -348,6 +348,7 @@ void TextEditor::set_find_replace_bar(FindReplaceBar *p_bar) {
 
 void TextEditor::_edit_option(int p_op) {
 	CodeEdit *tx = code_editor->get_text_editor();
+	tx->apply_ime();
 
 	switch (p_op) {
 		case EDIT_UNDO: {
@@ -502,6 +503,8 @@ void TextEditor::_text_edit_gui_input(const Ref<InputEvent> &ev) {
 		if (mb->get_button_index() == MouseButton::RIGHT) {
 			CodeEdit *tx = code_editor->get_text_editor();
 
+			tx->apply_ime();
+
 			Point2i pos = tx->get_line_column_at_pos(mb->get_global_position() - tx->get_global_position());
 			int row = pos.y;
 			int col = pos.x;

editor/plugins/text_shader_editor.cpp

@@ -628,6 +628,8 @@ ShaderTextEditor::ShaderTextEditor() {
 /*** SCRIPT EDITOR ******/
 
 void TextShaderEditor::_menu_option(int p_option) {
+	shader_editor->get_text_editor()->apply_ime();
+
 	switch (p_option) {
 		case EDIT_UNDO: {
 			shader_editor->get_text_editor()->undo();
@@ -978,6 +980,8 @@ void TextShaderEditor::_text_edit_gui_input(const Ref<InputEvent> &ev) {
 		if (mb->get_button_index() == MouseButton::RIGHT && mb->is_pressed()) {
 			CodeEdit *tx = shader_editor->get_text_editor();
 
+			tx->apply_ime();
+
 			Point2i pos = tx->get_line_column_at_pos(mb->get_global_position() - tx->get_global_position());
 			int row = pos.y;
 			int col = pos.x;

scene/gui/code_edit.cpp

@@ -253,8 +253,9 @@ void CodeEdit::_notification(int p_what) {
 void CodeEdit::gui_input(const Ref<InputEvent> &p_gui_input) {
 	Ref<InputEventMouseButton> mb = p_gui_input;
 	if (mb.is_valid()) {
-		/* Ignore mouse clicks in IME input mode. */
+		// Ignore mouse clicks in IME input mode, let TextEdit handle it.
 		if (has_ime_text()) {
+			TextEdit::gui_input(p_gui_input);
 			return;
 		}
 

scene/gui/text_edit.cpp

@@ -1489,14 +1489,7 @@ void TextEdit::_notification(int p_what) {
 			}
 
 			if (has_focus()) {
-				if (get_viewport()->get_window_id() != DisplayServer::INVALID_WINDOW_ID && DisplayServer::get_singleton()->has_feature(DisplayServer::FEATURE_IME)) {
+				_update_ime_window_position();
-					DisplayServer::get_singleton()->window_set_ime_active(true, get_viewport()->get_window_id());
-					Point2 pos = get_global_position() + get_caret_draw_pos();
-					if (get_window()->get_embedder()) {
-						pos += get_viewport()->get_popup_base_transform().get_origin();
-					}
-					DisplayServer::get_singleton()->window_set_ime_position(pos, get_viewport()->get_window_id());
-				}
 			}
 		} break;
 
@@ -1507,14 +1500,7 @@ void TextEdit::_notification(int p_what) {
 				draw_caret = true;
 			}
 
-			if (get_viewport()->get_window_id() != DisplayServer::INVALID_WINDOW_ID && DisplayServer::get_singleton()->has_feature(DisplayServer::FEATURE_IME)) {
+			_update_ime_window_position();
-				DisplayServer::get_singleton()->window_set_ime_active(true, get_viewport()->get_window_id());
-				Point2 pos = get_global_position() + get_caret_draw_pos();
-				if (get_window()->get_embedder()) {
-					pos += get_viewport()->get_popup_base_transform().get_origin();
-				}
-				DisplayServer::get_singleton()->window_set_ime_position(pos, get_viewport()->get_window_id());
-			}
 
 			if (DisplayServer::get_singleton()->has_feature(DisplayServer::FEATURE_VIRTUAL_KEYBOARD) && virtual_keyboard_enabled) {
 				int caret_start = -1;
@@ -1541,17 +1527,7 @@ void TextEdit::_notification(int p_what) {
 				caret_blink_timer->stop();
 			}
 
-			if (get_viewport()->get_window_id() != DisplayServer::INVALID_WINDOW_ID && DisplayServer::get_singleton()->has_feature(DisplayServer::FEATURE_IME)) {
+			apply_ime();
-				DisplayServer::get_singleton()->window_set_ime_position(Point2(), get_viewport()->get_window_id());
-				DisplayServer::get_singleton()->window_set_ime_active(false, get_viewport()->get_window_id());
-			}
-			if (!ime_text.is_empty()) {
-				ime_text = "";
-				ime_selection = Point2();
-				for (int i = 0; i < carets.size(); i++) {
-					text.invalidate_cache(get_caret_line(i), get_caret_column(i), true, ime_text);
-				}
-			}
 
 			if (DisplayServer::get_singleton()->has_feature(DisplayServer::FEATURE_VIRTUAL_KEYBOARD) && virtual_keyboard_enabled) {
 				DisplayServer::get_singleton()->virtual_keyboard_hide();
@@ -1571,15 +1547,8 @@ void TextEdit::_notification(int p_what) {
 					delete_selection();
 				}
 
-				for (int i = 0; i < carets.size(); i++) {
+				_update_ime_text();
-					String t;
+				adjust_viewport_to_caret(0);
-					if (get_caret_column(i) >= 0) {
-						t = text[get_caret_line(i)].substr(0, get_caret_column(i)) + ime_text + text[get_caret_line(i)].substr(get_caret_column(i), text[get_caret_line(i)].length());
-					} else {
-						t = ime_text;
-					}
-					text.invalidate_cache(get_caret_line(i), get_caret_column(i), true, t, structured_text_parser(st_parser, st_args, t));
-				}
 				queue_redraw();
 			}
 		} break;
@@ -1681,10 +1650,6 @@ void TextEdit::gui_input(const Ref<InputEvent> &p_gui_input) {
 		if (is_layout_rtl()) {
 			mpos.x = get_size().x - mpos.x;
 		}
-		if (ime_text.length() != 0) {
-			// Ignore mouse clicks in IME input mode.
-			return;
-		}
 
 		if (mb->is_pressed()) {
 			if (mb->get_button_index() == MouseButton::WHEEL_UP && !mb->is_command_or_control_pressed()) {
@@ -1718,6 +1683,8 @@ void TextEdit::gui_input(const Ref<InputEvent> &p_gui_input) {
 			if (mb->get_button_index() == MouseButton::LEFT) {
 				_reset_caret_blink_timer();
 
+				apply_ime();
+
 				Point2i pos = get_line_column_at_pos(mpos);
 				int row = pos.y;
 				int col = pos.x;
@@ -1865,11 +1832,13 @@ void TextEdit::gui_input(const Ref<InputEvent> &p_gui_input) {
 			}
 
 			if (is_middle_mouse_paste_enabled() && mb->get_button_index() == MouseButton::MIDDLE && DisplayServer::get_singleton()->has_feature(DisplayServer::FEATURE_CLIPBOARD_PRIMARY)) {
+				apply_ime();
 				paste_primary_clipboard();
 			}
 
 			if (mb->get_button_index() == MouseButton::RIGHT && (context_menu_enabled || is_move_caret_on_right_click_enabled())) {
 				_reset_caret_blink_timer();
+				apply_ime();
 
 				Point2i pos = get_line_column_at_pos(mpos);
 				int row = pos.y;
@@ -1909,6 +1878,11 @@ void TextEdit::gui_input(const Ref<InputEvent> &p_gui_input) {
 				}
 			}
 		} else {
+			if (has_ime_text()) {
+				// Ignore mouse up in IME input mode.
+				return;
+			}
+
 			if (mb->get_button_index() == MouseButton::LEFT) {
 				if (selection_drag_attempt && is_mouse_over_selection()) {
 					remove_secondary_carets();
@@ -1967,7 +1941,7 @@ void TextEdit::gui_input(const Ref<InputEvent> &p_gui_input) {
 				_update_minimap_drag();
 			}
 
-			if (!dragging_minimap) {
+			if (!dragging_minimap && !has_ime_text()) {
 				switch (selecting_mode) {
 					case SelectionMode::SELECTION_MODE_POINTER: {
 						_update_selection_mode_pointer();
@@ -2012,6 +1986,7 @@ void TextEdit::gui_input(const Ref<InputEvent> &p_gui_input) {
 		}
 
 		if (drag_action && can_drop_data(mpos, get_viewport()->gui_get_drag_data())) {
+			apply_ime();
 			drag_caret_force_displayed = true;
 			Point2i pos = get_line_column_at_pos(get_local_mouse_pos());
 			set_caret_line(pos.y, false, true, 0, 0);
@@ -3030,6 +3005,43 @@ void TextEdit::_update_caches() {
 	}
 }
 
+void TextEdit::_close_ime_window() {
+	if (get_viewport()->get_window_id() == DisplayServer::INVALID_WINDOW_ID || !DisplayServer::get_singleton()->has_feature(DisplayServer::FEATURE_IME)) {
+		return;
+	}
+	DisplayServer::get_singleton()->window_set_ime_position(Point2(), get_viewport()->get_window_id());
+	DisplayServer::get_singleton()->window_set_ime_active(false, get_viewport()->get_window_id());
+}
+
+void TextEdit::_update_ime_window_position() {
+	if (get_viewport()->get_window_id() == DisplayServer::INVALID_WINDOW_ID || !DisplayServer::get_singleton()->has_feature(DisplayServer::FEATURE_IME)) {
+		return;
+	}
+	DisplayServer::get_singleton()->window_set_ime_active(true, get_viewport()->get_window_id());
+	Point2 pos = get_global_position() + get_caret_draw_pos();
+	if (get_window()->get_embedder()) {
+		pos += get_viewport()->get_popup_base_transform().get_origin();
+	}
+	// The window will move to the updated position the next time the IME is updated, not immediately.
+	DisplayServer::get_singleton()->window_set_ime_position(pos, get_viewport()->get_window_id());
+}
+
+void TextEdit::_update_ime_text() {
+	if (has_ime_text()) {
+		// Update text to visually include IME text.
+		for (int i = 0; i < get_caret_count(); i++) {
+			String text_with_ime = text[get_caret_line(i)].substr(0, get_caret_column(i)) + ime_text + text[get_caret_line(i)].substr(get_caret_column(i), text[get_caret_line(i)].length());
+			text.invalidate_cache(get_caret_line(i), get_caret_column(i), true, text_with_ime, structured_text_parser(st_parser, st_args, text_with_ime));
+		}
+	} else {
+		// Reset text.
+		for (int i = 0; i < get_caret_count(); i++) {
+			text.invalidate_cache(get_caret_line(i), get_caret_column(i), true);
+		}
+	}
+	queue_redraw();
+}
+
 /* General overrides. */
 Size2 TextEdit::get_minimum_size() const {
 	Size2 size = theme_cache.style_normal->get_minimum_size();
@@ -3189,6 +3201,26 @@ bool TextEdit::has_ime_text() const {
 	return !ime_text.is_empty();
 }
 
+void TextEdit::cancel_ime() {
+	if (!has_ime_text()) {
+		return;
+	}
+	ime_text = String();
+	ime_selection = Point2();
+	_close_ime_window();
+	_update_ime_text();
+}
+
+void TextEdit::apply_ime() {
+	if (!has_ime_text()) {
+		return;
+	}
+	// Force apply the current IME text.
+	String insert_ime_text = ime_text;
+	cancel_ime();
+	insert_text_at_caret(insert_ime_text);
+}
+
 void TextEdit::set_editable(const bool p_editable) {
 	if (editable == p_editable) {
 		return;
@@ -3568,16 +3600,8 @@ void TextEdit::insert_text_at_caret(const String &p_text, int p_caret) {
 		adjust_carets_after_edit(i, new_line, new_column, from_line, from_col);
 	}
 
-	if (!ime_text.is_empty()) {
+	if (has_ime_text()) {
-		for (int i = 0; i < carets.size(); i++) {
+		_update_ime_text();
-			String t;
-			if (get_caret_column(i) >= 0) {
-				t = text[get_caret_line(i)].substr(0, get_caret_column(i)) + ime_text + text[get_caret_line(i)].substr(get_caret_column(i), text[get_caret_line(i)].length());
-			} else {
-				t = ime_text;
-			}
-			text.invalidate_cache(get_caret_line(i), get_caret_column(i), true, t, structured_text_parser(st_parser, st_args, t));
-		}
 	}
 
 	end_complex_operation();
@@ -5560,14 +5584,14 @@ void TextEdit::adjust_viewport_to_caret(int p_caret) {
 	Vector2i caret_pos;
 
 	// Get position of the start of caret.
-	if (ime_text.length() != 0 && ime_selection.x != 0) {
+	if (has_ime_text() && ime_selection.x != 0) {
 		caret_pos.x = _get_column_x_offset_for_line(get_caret_column(p_caret) + ime_selection.x, get_caret_line(p_caret), get_caret_column(p_caret));
 	} else {
 		caret_pos.x = _get_column_x_offset_for_line(get_caret_column(p_caret), get_caret_line(p_caret), get_caret_column(p_caret));
 	}
 
 	// Get position of the end of caret.
-	if (ime_text.length() != 0) {
+	if (has_ime_text()) {
 		if (ime_selection.y != 0) {
 			caret_pos.y = _get_column_x_offset_for_line(get_caret_column(p_caret) + ime_selection.x + ime_selection.y, get_caret_line(p_caret), get_caret_column(p_caret));
 		} else {
@@ -5612,14 +5636,14 @@ void TextEdit::center_viewport_to_caret(int p_caret) {
 		Vector2i caret_pos;
 
 		// Get position of the start of caret.
-		if (ime_text.length() != 0 && ime_selection.x != 0) {
+		if (has_ime_text() && ime_selection.x != 0) {
 			caret_pos.x = _get_column_x_offset_for_line(get_caret_column(p_caret) + ime_selection.x, get_caret_line(p_caret), get_caret_column(p_caret));
 		} else {
 			caret_pos.x = _get_column_x_offset_for_line(get_caret_column(p_caret), get_caret_line(p_caret), get_caret_column(p_caret));
 		}
 
 		// Get position of the end of caret.
-		if (ime_text.length() != 0) {
+		if (has_ime_text()) {
 			if (ime_selection.y != 0) {
 				caret_pos.y = _get_column_x_offset_for_line(get_caret_column(p_caret) + ime_selection.x + ime_selection.y, get_caret_line(p_caret), get_caret_column(p_caret));
 			} else {
@@ -6029,6 +6053,8 @@ void TextEdit::_bind_methods() {
 	/* Text */
 	// Text properties
 	ClassDB::bind_method(D_METHOD("has_ime_text"), &TextEdit::has_ime_text);
+	ClassDB::bind_method(D_METHOD("cancel_ime"), &TextEdit::cancel_ime);
+	ClassDB::bind_method(D_METHOD("apply_ime"), &TextEdit::apply_ime);
 
 	ClassDB::bind_method(D_METHOD("set_editable", "enabled"), &TextEdit::set_editable);
 	ClassDB::bind_method(D_METHOD("is_editable"), &TextEdit::is_editable);

scene/gui/text_edit.h

@@ -293,6 +293,10 @@ private:
 	void _clear();
 	void _update_caches();
 
+	void _close_ime_window();
+	void _update_ime_window_position();
+	void _update_ime_text();
+
 	// User control.
 	bool overtype_mode = false;
 	bool context_menu_enabled = true;
@@ -696,6 +700,8 @@ public:
 	/* Text */
 	// Text properties.
 	bool has_ime_text() const;
+	void cancel_ime();
+	void apply_ime();
 
 	void set_editable(const bool p_editable);
 	bool is_editable() const;