[RichTextLabel] Match minimum size calculation of Label

(optional via fit_content property)

doc/classes/RichTextLabel.xml

@@ -8,7 +8,7 @@
 		[b]Note:[/b] Assignments to [member text] clear the tag stack and reconstruct it from the property's contents. Any edits made to [member text] will erase previous edits made from other manual sources such as [method append_text] and the [code]push_*[/code] / [method pop] methods.
 		[b]Note:[/b] RichTextLabel doesn't support entangled BBCode tags. For example, instead of using [code][b]bold[i]bold italic[/b]italic[/i][/code], use [code][b]bold[i]bold italic[/i][/b][i]italic[/i][/code].
 		[b]Note:[/b] [code]push_*/pop[/code] functions won't affect BBCode.
-		[b]Note:[/b] Unlike [Label], RichTextLabel doesn't have a [i]property[/i] to horizontally align text to the center. Instead, enable [member bbcode_enabled] and surround the text in a [code][center][/code] tag as follows: [code][center]Example[/center][/code]. There is currently no built-in way to vertically align text either, but this can be emulated by relying on anchors/containers and the [member fit_content_height] property.
+		[b]Note:[/b] Unlike [Label], RichTextLabel doesn't have a [i]property[/i] to horizontally align text to the center. Instead, enable [member bbcode_enabled] and surround the text in a [code][center][/code] tag as follows: [code][center]Example[/center][/code]. There is currently no built-in way to vertically align text either, but this can be emulated by relying on anchors/containers and the [member fit_content] property.
 	</description>
 	<tutorials>
 		<link title="BBCode in RichTextLabel">$DOCS_URL/tutorials/ui/bbcode_in_richtextlabel.html</link>
@@ -473,9 +473,8 @@
 		<member name="deselect_on_focus_loss_enabled" type="bool" setter="set_deselect_on_focus_loss_enabled" getter="is_deselect_on_focus_loss_enabled" default="true">
 			If [code]true[/code], the selected text will be deselected when focus is lost.
 		</member>
-		<member name="fit_content_height" type="bool" setter="set_fit_content_height" getter="is_fit_content_height_enabled" default="false">
-			If [code]true[/code], the label's height will be automatically updated to fit its content.
-			[b]Note:[/b] This property is used as a workaround to fix issues with [RichTextLabel] in [Container]s, but it's unreliable in some cases and will be removed in future versions.
+		<member name="fit_content" type="bool" setter="set_fit_content" getter="is_fit_content_enabled" default="false">
+			If [code]true[/code], the label's minimum size will be automatically updated to fit its content, matching the behavior of [Label].
 		</member>
 		<member name="hint_underlined" type="bool" setter="set_hint_underline" getter="is_hint_underlined" default="true">
 			If [code]true[/code], the label underlines hint tags such as [code][hint=description]{text}[/hint][/code].

editor/connections_dialog.cpp

@@ -566,7 +566,7 @@ ConnectDialog::~ConnectDialog() {
 // Originally copied and adapted from EditorProperty, try to keep style in sync.
 Control *ConnectionsDockTree::make_custom_tooltip(const String &p_text) const {
 	EditorHelpBit *help_bit = memnew(EditorHelpBit);
-	help_bit->get_rich_text()->set_fixed_size_to_width(360 * EDSCALE);
+	help_bit->get_rich_text()->set_custom_minimum_size(Size2(360 * EDSCALE, 1));
 
 	// p_text is expected to be something like this:
 	// "gui_input::(event: InputEvent)::<Signal description>"

editor/editor_help.cpp

@@ -2370,7 +2370,7 @@ EditorHelpBit::EditorHelpBit() {
 	rich_text = memnew(RichTextLabel);
 	add_child(rich_text);
 	rich_text->connect("meta_clicked", callable_mp(this, &EditorHelpBit::_meta_clicked));
-	rich_text->set_fit_content_height(true);
+	rich_text->set_fit_content(true);
 	set_custom_minimum_size(Size2(0, 50 * EDSCALE));
 }
 

editor/editor_inspector.cpp

@@ -886,7 +886,7 @@ void EditorProperty::_update_pin_flags() {
 
 static Control *make_help_bit(const String &p_text, bool p_property) {
 	EditorHelpBit *help_bit = memnew(EditorHelpBit);
-	help_bit->get_rich_text()->set_fixed_size_to_width(360 * EDSCALE);
+	help_bit->get_rich_text()->set_custom_minimum_size(Size2(360 * EDSCALE, 1));
 
 	PackedStringArray slices = p_text.split("::", false);
 	if (slices.is_empty()) {

scene/gui/rich_text_label.cpp

@@ -2778,7 +2778,7 @@ bool RichTextLabel::_validate_line_caches() {
 
 		main->first_resized_line.store(main->lines.size());
 
-		if (fit_content_height) {
+		if (fit_content) {
 			update_minimum_size();
 		}
 		return true;
@@ -2862,7 +2862,7 @@ void RichTextLabel::_process_line_caches() {
 	main->first_resized_line.store(main->lines.size());
 	main->first_invalid_font_line.store(main->lines.size());
 
-	if (fit_content_height) {
+	if (fit_content) {
 		update_minimum_size();
 	}
 	emit_signal(SNAME("finished"));
@@ -2963,7 +2963,7 @@ void RichTextLabel::_add_item(Item *p_item, bool p_enter, bool p_ensure_newline)
 
 	_invalidate_current_line(current_frame);
 
-	if (fixed_width != -1) {
+	if (fit_content) {
 		update_minimum_size();
 	}
 	queue_redraw();
@@ -3551,7 +3551,7 @@ void RichTextLabel::clear() {
 		scroll_following = true;
 	}
 
-	if (fixed_width != -1) {
+	if (fit_content) {
 		update_minimum_size();
 	}
 }
@@ -3572,15 +3572,17 @@ int RichTextLabel::get_tab_size() const {
 	return tab_size;
 }
 
-void RichTextLabel::set_fit_content_height(bool p_enabled) {
-	if (p_enabled != fit_content_height) {
-		fit_content_height = p_enabled;
-		update_minimum_size();
+void RichTextLabel::set_fit_content(bool p_enabled) {
+	if (p_enabled == fit_content) {
+		return;
 	}
+
+	fit_content = p_enabled;
+	update_minimum_size();
 }
 
-bool RichTextLabel::is_fit_content_height_enabled() const {
-	return fit_content_height;
+bool RichTextLabel::is_fit_content_enabled() const {
+	return fit_content;
 }
 
 void RichTextLabel::set_meta_underline(bool p_underline) {
@@ -5381,8 +5383,8 @@ void RichTextLabel::_bind_methods() {
 	ClassDB::bind_method(D_METHOD("set_tab_size", "spaces"), &RichTextLabel::set_tab_size);
 	ClassDB::bind_method(D_METHOD("get_tab_size"), &RichTextLabel::get_tab_size);
 
-	ClassDB::bind_method(D_METHOD("set_fit_content_height", "enabled"), &RichTextLabel::set_fit_content_height);
-	ClassDB::bind_method(D_METHOD("is_fit_content_height_enabled"), &RichTextLabel::is_fit_content_height_enabled);
+	ClassDB::bind_method(D_METHOD("set_fit_content", "enabled"), &RichTextLabel::set_fit_content);
+	ClassDB::bind_method(D_METHOD("is_fit_content_enabled"), &RichTextLabel::is_fit_content_enabled);
 
 	ClassDB::bind_method(D_METHOD("set_selection_enabled", "enabled"), &RichTextLabel::set_selection_enabled);
 	ClassDB::bind_method(D_METHOD("is_selection_enabled"), &RichTextLabel::is_selection_enabled);
@@ -5457,7 +5459,7 @@ void RichTextLabel::_bind_methods() {
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "bbcode_enabled"), "set_use_bbcode", "is_using_bbcode");
 	ADD_PROPERTY(PropertyInfo(Variant::STRING, "text", PROPERTY_HINT_MULTILINE_TEXT), "set_text", "get_text");
 
-	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "fit_content_height"), "set_fit_content_height", "is_fit_content_height_enabled");
+	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "fit_content"), "set_fit_content", "is_fit_content_enabled");
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "scroll_active"), "set_scroll_active", "is_scroll_active");
 	ADD_PROPERTY(PropertyInfo(Variant::BOOL, "scroll_following"), "set_scroll_follow", "is_scroll_following");
 	ADD_PROPERTY(PropertyInfo(Variant::INT, "autowrap_mode", PROPERTY_HINT_ENUM, "Off,Arbitrary,Word,Word (Smart)"), "set_autowrap_mode", "get_autowrap_mode");
@@ -5644,27 +5646,17 @@ int RichTextLabel::get_total_glyph_count() const {
 	return tg;
 }
 
-void RichTextLabel::set_fixed_size_to_width(int p_width) {
-	if (fixed_width == p_width) {
-		return;
-	}
-
-	fixed_width = p_width;
-	update_minimum_size();
-}
-
 Size2 RichTextLabel::get_minimum_size() const {
-	Size2 size = theme_cache.normal_style->get_minimum_size();
+	Size2 sb_min_size = theme_cache.normal_style->get_minimum_size();
+	Size2 min_size;
 
-	if (fixed_width != -1) {
-		size.x += fixed_width;
+	if (fit_content) {
+		min_size.x = get_content_width();
+		min_size.y = get_content_height();
 	}
 
-	if (fit_content_height) {
-		size.y += get_content_height();
-	}
-
-	return size;
+	return sb_min_size +
+			((autowrap_mode != TextServer::AUTOWRAP_OFF) ? Size2(1, min_size.height) : min_size);
 }
 
 // Context menu.

scene/gui/rich_text_label.h

@@ -524,9 +524,7 @@ private:
 	bool use_bbcode = false;
 	String text;
 
-	int fixed_width = -1;
-
-	bool fit_content_height = false;
+	bool fit_content = false;
 
 	struct ThemeCache {
 		Ref<StyleBox> normal_style;
@@ -640,8 +638,8 @@ public:
 	void set_shortcut_keys_enabled(bool p_enabled);
 	bool is_shortcut_keys_enabled() const;
 
-	void set_fit_content_height(bool p_enabled);
-	bool is_fit_content_height_enabled() const;
+	void set_fit_content(bool p_enabled);
+	bool is_fit_content_enabled() const;
 
 	bool search(const String &p_string, bool p_from_selection = false, bool p_search_previous = false);
 
@@ -731,7 +729,6 @@ public:
 
 	void install_effect(const Variant effect);
 
-	void set_fixed_size_to_width(int p_width);
 	virtual Size2 get_minimum_size() const override;
 
 	RichTextLabel(const String &p_text = String());