godot/doc/classes/RichTextLabel.xml

<?xml version="1.0" encoding="UTF-8" ?>
<class name="RichTextLabel" inherits="Control" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd">
	<brief_description>
		Label that displays rich text.
	</brief_description>
	<description>
		Rich text can contain custom text, fonts, images and some basic formatting. The label manages these as an internal tag stack. It also adapts itself to given width/heights.
		[b]Note:[/b] Assignments to [member bbcode_text] clear the tag stack and reconstruct it from the property's contents. Any edits made to [member bbcode_text] will erase previous edits made from other manual sources such as [method append_bbcode] 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] Unicode characters after [code]0xffff[/code] (such as most emoji) are [i]not[/i] supported on Windows. They will display as unknown characters instead. This will be resolved in Godot 4.0.
	</description>
	<tutorials>
		<link title="BBCode in RichTextLabel">$DOCS_URL/tutorials/ui/bbcode_in_richtextlabel.html</link>
		<link title="GUI Rich Text/BBcode Demo">https://godotengine.org/asset-library/asset/132</link>
		<link title="OS Test Demo">https://godotengine.org/asset-library/asset/677</link>
	</tutorials>
	<methods>
		<method name="add_image">
			<return type="void" />
			<argument index="0" name="image" type="Texture" />
			<argument index="1" name="width" type="int" default="0" />
			<argument index="2" name="height" type="int" default="0" />
			<argument index="3" name="align" type="int" enum="RichTextLabel.InlineAlign" default="2" />
			<description>
				Adds an image's opening and closing tags to the tag stack, optionally providing a [code]width[/code] and [code]height[/code] to resize the image.
				If [code]width[/code] or [code]height[/code] is set to 0, the image size will be adjusted in order to keep the original aspect ratio.
			</description>
		</method>
		<method name="add_text">
			<return type="void" />
			<argument index="0" name="text" type="String" />
			<description>
				Adds raw non-BBCode-parsed text to the tag stack.
			</description>
		</method>
		<method name="append_bbcode">
			<return type="int" enum="Error" />
			<argument index="0" name="bbcode" type="String" />
			<description>
				Parses [code]bbcode[/code] and adds tags to the tag stack as needed.
				[b]Note:[/b] Using this method, you can't close a tag that was opened in a previous [method append_bbcode] call. This is done to improve performance, especially when updating large RichTextLabels since rebuilding the whole BBCode every time would be slower. If you absolutely need to close a tag in a future method call, append the [member bbcode_text] instead of using [method append_bbcode].
				[b]Note:[/b] This method internals' can't possibly fail, but an error code is returned for backwards compatibility, which will always be [constant OK].
			</description>
		</method>
		<method name="clear">
			<return type="void" />
			<description>
				Clears the tag stack and sets [member bbcode_text] to an empty string.
			</description>
		</method>
		<method name="deselect">
			<return type="void" />
			<description>
				Clears the current selection.
			</description>
		</method>
		<method name="get_content_height" qualifiers="const">
			<return type="int" />
			<description>
				Returns the height of the content.
			</description>
		</method>
		<method name="get_line_count" qualifiers="const">
			<return type="int" />
			<description>
				Returns the total number of newlines in the tag stack's text tags. Considers wrapped text as one line.
			</description>
		</method>
		<method name="get_selected_text">
			<return type="String" />
			<description>
				Returns the current selection text. Does not include BBCodes.
			</description>
		</method>
		<method name="get_total_character_count" qualifiers="const">
			<return type="int" />
			<description>
				Returns the total number of characters from text tags. Does not include BBCodes.
			</description>
		</method>
		<method name="get_v_scroll">
			<return type="VScrollBar" />
			<description>
				Returns the vertical scrollbar.
				[b]Warning:[/b] This is a required internal node, removing and freeing it may cause a crash. If you wish to hide it or any of its children, use their [member CanvasItem.visible] property.
			</description>
		</method>
		<method name="get_visible_line_count" qualifiers="const">
			<return type="int" />
			<description>
				Returns the number of visible lines.
			</description>
		</method>
		<method name="install_effect">
			<return type="void" />
			<argument index="0" name="effect" type="Variant" />
			<description>
				Installs a custom effect. [code]effect[/code] should be a valid [RichTextEffect].
			</description>
		</method>
		<method name="newline">
			<return type="void" />
			<description>
				Adds a newline tag to the tag stack.
			</description>
		</method>
		<method name="parse_bbcode">
			<return type="int" enum="Error" />
			<argument index="0" name="bbcode" type="String" />
			<description>
				The assignment version of [method append_bbcode]. Clears the tag stack and inserts the new content.
				[b]Note:[/b] This method internals' can't possibly fail, but an error code is returned for backwards compatibility, which will always be [constant OK].
			</description>
		</method>
		<method name="parse_expressions_for_values">
			<return type="Dictionary" />
			<argument index="0" name="expressions" type="PoolStringArray" />
			<description>
				Parses BBCode parameter [code]expressions[/code] into a dictionary.
			</description>
		</method>
		<method name="pop">
			<return type="void" />
			<description>
				Terminates the current tag. Use after [code]push_*[/code] methods to close BBCodes manually. Does not need to follow [code]add_*[/code] methods.
			</description>
		</method>
		<method name="push_align">
			<return type="void" />
			<argument index="0" name="align" type="int" enum="RichTextLabel.Align" />
			<description>
				Adds an [code][align][/code] tag based on the given [code]align[/code] value. See [enum Align] for possible values.
			</description>
		</method>
		<method name="push_bold">
			<return type="void" />
			<description>
				Adds a [code][font][/code] tag with a bold font to the tag stack. This is the same as adding a [code][b][/code] tag if not currently in a [code][i][/code] tag.
			</description>
		</method>
		<method name="push_bold_italics">
			<return type="void" />
			<description>
				Adds a [code][font][/code] tag with a bold italics font to the tag stack.
			</description>
		</method>
		<method name="push_cell">
			<return type="void" />
			<description>
				Adds a [code][cell][/code] tag to the tag stack. Must be inside a [code][table][/code] tag. See [method push_table] for details.
			</description>
		</method>
		<method name="push_color">
			<return type="void" />
			<argument index="0" name="color" type="Color" />
			<description>
				Adds a [code][color][/code] tag to the tag stack.
			</description>
		</method>
		<method name="push_font">
			<return type="void" />
			<argument index="0" name="font" type="Font" />
			<description>
				Adds a [code][font][/code] tag to the tag stack. Overrides default fonts for its duration.
			</description>
		</method>
		<method name="push_indent">
			<return type="void" />
			<argument index="0" name="level" type="int" />
			<description>
				Adds an [code][indent][/code] tag to the tag stack. Multiplies [code]level[/code] by current [member tab_size] to determine new margin length.
			</description>
		</method>
		<method name="push_italics">
			<return type="void" />
			<description>
				Adds a [code][font][/code] tag with a italics font to the tag stack. This is the same as adding a [code][i][/code] tag if not currently in a [code][b][/code] tag.
			</description>
		</method>
		<method name="push_list">
			<return type="void" />
			<argument index="0" name="type" type="int" enum="RichTextLabel.ListType" />
			<description>
				Adds a [code][list][/code] tag to the tag stack. Similar to the BBCodes [code][ol][/code] or [code][ul][/code], but supports more list types. Not fully implemented!
			</description>
		</method>
		<method name="push_meta">
			<return type="void" />
			<argument index="0" name="data" type="Variant" />
			<description>
				Adds a [code][meta][/code] tag to the tag stack. Similar to the BBCode [code][url=something]{text}[/url][/code], but supports non-[String] metadata types.
			</description>
		</method>
		<method name="push_mono">
			<return type="void" />
			<description>
				Adds a [code][font][/code] tag with a monospace font to the tag stack.
			</description>
		</method>
		<method name="push_normal">
			<return type="void" />
			<description>
				Adds a [code][font][/code] tag with a normal font to the tag stack.
			</description>
		</method>
		<method name="push_strikethrough">
			<return type="void" />
			<description>
				Adds a [code][s][/code] tag to the tag stack.
			</description>
		</method>
		<method name="push_table">
			<return type="void" />
			<argument index="0" name="columns" type="int" />
			<description>
				Adds a [code][table=columns][/code] tag to the tag stack.
			</description>
		</method>
		<method name="push_underline">
			<return type="void" />
			<description>
				Adds a [code][u][/code] tag to the tag stack.
			</description>
		</method>
		<method name="remove_line">
			<return type="bool" />
			<argument index="0" name="line" type="int" />
			<description>
				Removes a line of content from the label. Returns [code]true[/code] if the line exists.
				The [code]line[/code] argument is the index of the line to remove, it can take values in the interval [code][0, get_line_count() - 1][/code].
			</description>
		</method>
		<method name="scroll_to_line">
			<return type="void" />
			<argument index="0" name="line" type="int" />
			<description>
				Scrolls the window's top line to match [code]line[/code].
			</description>
		</method>
		<method name="set_table_column_expand">
			<return type="void" />
			<argument index="0" name="column" type="int" />
			<argument index="1" name="expand" type="bool" />
			<argument index="2" name="ratio" type="int" />
			<description>
				Edits the selected column's expansion options. If [code]expand[/code] is [code]true[/code], the column expands in proportion to its expansion ratio versus the other columns' ratios.
				For example, 2 columns with ratios 3 and 4 plus 70 pixels in available width would expand 30 and 40 pixels, respectively.
				If [code]expand[/code] is [code]false[/code], the column will not contribute to the total ratio.
			</description>
		</method>
	</methods>
	<members>
		<member name="bbcode_enabled" type="bool" setter="set_use_bbcode" getter="is_using_bbcode" default="false">
			If [code]true[/code], the label uses BBCode formatting.
			[b]Note:[/b] Trying to alter the [RichTextLabel]'s text with [method add_text] will reset this to [code]false[/code]. Use instead [method append_bbcode] to preserve BBCode formatting.
		</member>
		<member name="bbcode_text" type="String" setter="set_bbcode" getter="get_bbcode" default="&quot;&quot;">
			The label's text in BBCode format. Is not representative of manual modifications to the internal tag stack. Erases changes made by other methods when edited.
			[b]Note:[/b] It is unadvised to use the [code]+=[/code] operator with [code]bbcode_text[/code] (e.g. [code]bbcode_text += "some string"[/code]) as it replaces the whole text and can cause slowdowns. It will also erase all BBCode that was added to stack using [code]push_*[/code] methods. Use [method append_bbcode] for adding text instead, unless you absolutely need to close a tag that was opened in an earlier method call.
		</member>
		<member name="custom_effects" type="Array" setter="set_effects" getter="get_effects" default="[  ]">
			The currently installed custom effects. This is an array of [RichTextEffect]s.
			To add a custom effect, it's more convenient to use [method install_effect].
		</member>
		<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>
		<member name="meta_underlined" type="bool" setter="set_meta_underline" getter="is_meta_underlined" default="true">
			If [code]true[/code], the label underlines meta tags such as [code][url]{text}[/url][/code].
		</member>
		<member name="override_selected_font_color" type="bool" setter="set_override_selected_font_color" getter="is_overriding_selected_font_color" default="false">
			If [code]true[/code], the label uses the custom font color.
		</member>
		<member name="percent_visible" type="float" setter="set_percent_visible" getter="get_percent_visible" default="1.0">
			The range of characters to display, as a [float] between 0.0 and 1.0. When assigned an out of range value, it's the same as assigning 1.0.
			[b]Note:[/b] Setting this property updates [member visible_characters] based on current [method get_total_character_count].
		</member>
		<member name="rect_clip_content" type="bool" setter="set_clip_contents" getter="is_clipping_contents" overrides="Control" default="true" />
		<member name="scroll_active" type="bool" setter="set_scroll_active" getter="is_scroll_active" default="true">
			If [code]true[/code], the scrollbar is visible. Setting this to [code]false[/code] does not block scrolling completely. See [method scroll_to_line].
		</member>
		<member name="scroll_following" type="bool" setter="set_scroll_follow" getter="is_scroll_following" default="false">
			If [code]true[/code], the window scrolls down to display new content automatically.
		</member>
		<member name="selection_enabled" type="bool" setter="set_selection_enabled" getter="is_selection_enabled" default="false">
			If [code]true[/code], the label allows text selection.
		</member>
		<member name="tab_size" type="int" setter="set_tab_size" getter="get_tab_size" default="4">
			The number of spaces associated with a single tab length. Does not affect [code]\t[/code] in text tags, only indent tags.
		</member>
		<member name="text" type="String" setter="set_text" getter="get_text" default="&quot;&quot;">
			The raw text of the label.
			When set, clears the tag stack and adds a raw text tag to the top of it. Does not parse BBCodes. Does not modify [member bbcode_text].
		</member>
		<member name="visible_characters" type="int" setter="set_visible_characters" getter="get_visible_characters" default="-1">
			The restricted number of characters to display in the label. If [code]-1[/code], all characters will be displayed.
			[b]Note:[/b] Setting this property updates [member percent_visible] based on current [method get_total_character_count].
		</member>
	</members>
	<signals>
		<signal name="meta_clicked">
			<argument index="0" name="meta" type="Variant" />
			<description>
				Triggered when the user clicks on content between meta tags. If the meta is defined in text, e.g. [code][url={"data"="hi"}]hi[/url][/code], then the parameter for this signal will be a [String] type. If a particular type or an object is desired, the [method push_meta] method must be used to manually insert the data into the tag stack.
			</description>
		</signal>
		<signal name="meta_hover_ended">
			<argument index="0" name="meta" type="Variant" />
			<description>
				Triggers when the mouse exits a meta tag.
			</description>
		</signal>
		<signal name="meta_hover_started">
			<argument index="0" name="meta" type="Variant" />
			<description>
				Triggers when the mouse enters a meta tag.
			</description>
		</signal>
	</signals>
	<constants>
		<constant name="ALIGN_LEFT" value="0" enum="Align">
			Makes text left aligned.
		</constant>
		<constant name="ALIGN_CENTER" value="1" enum="Align">
			Makes text centered.
		</constant>
		<constant name="ALIGN_RIGHT" value="2" enum="Align">
			Makes text right aligned.
		</constant>
		<constant name="ALIGN_FILL" value="3" enum="Align">
			Makes text fill width.
		</constant>
		<constant name="INLINE_ALIGN_TOP" value="0" enum="InlineAlign">
			Aligns top of the inline image to the top of the text.
		</constant>
		<constant name="INLINE_ALIGN_CENTER" value="1" enum="InlineAlign">
			Aligns center of the inline image to the center of the text.
		</constant>
		<constant name="INLINE_ALIGN_BASELINE" value="2" enum="InlineAlign">
			Aligns bottom of the inline image to the baseline of the text.
		</constant>
		<constant name="INLINE_ALIGN_BOTTOM" value="3" enum="InlineAlign">
			Aligns bottom of the inline image to the bottom of the text.
		</constant>
		<constant name="LIST_NUMBERS" value="0" enum="ListType">
			Each list item has a number marker.
		</constant>
		<constant name="LIST_LETTERS" value="1" enum="ListType">
			Each list item has a letter marker.
		</constant>
		<constant name="LIST_DOTS" value="2" enum="ListType">
			Each list item has a filled circle marker.
		</constant>
		<constant name="ITEM_FRAME" value="0" enum="ItemType">
		</constant>
		<constant name="ITEM_TEXT" value="1" enum="ItemType">
		</constant>
		<constant name="ITEM_IMAGE" value="2" enum="ItemType">
		</constant>
		<constant name="ITEM_NEWLINE" value="3" enum="ItemType">
		</constant>
		<constant name="ITEM_FONT" value="4" enum="ItemType">
		</constant>
		<constant name="ITEM_COLOR" value="5" enum="ItemType">
		</constant>
		<constant name="ITEM_UNDERLINE" value="6" enum="ItemType">
		</constant>
		<constant name="ITEM_STRIKETHROUGH" value="7" enum="ItemType">
		</constant>
		<constant name="ITEM_ALIGN" value="8" enum="ItemType">
		</constant>
		<constant name="ITEM_INDENT" value="9" enum="ItemType">
		</constant>
		<constant name="ITEM_LIST" value="10" enum="ItemType">
		</constant>
		<constant name="ITEM_TABLE" value="11" enum="ItemType">
		</constant>
		<constant name="ITEM_FADE" value="12" enum="ItemType">
		</constant>
		<constant name="ITEM_SHAKE" value="13" enum="ItemType">
		</constant>
		<constant name="ITEM_WAVE" value="14" enum="ItemType">
		</constant>
		<constant name="ITEM_TORNADO" value="15" enum="ItemType">
		</constant>
		<constant name="ITEM_RAINBOW" value="16" enum="ItemType">
		</constant>
		<constant name="ITEM_CUSTOMFX" value="18" enum="ItemType">
		</constant>
		<constant name="ITEM_META" value="17" enum="ItemType">
		</constant>
	</constants>
	<theme_items>
		<theme_item name="default_color" data_type="color" type="Color" default="Color( 1, 1, 1, 1 )">
			The default text color.
		</theme_item>
		<theme_item name="font_color_selected" data_type="color" type="Color" default="Color( 0.49, 0.49, 0.49, 1 )">
			The color of selected text, used when [member selection_enabled] is [code]true[/code].
		</theme_item>
		<theme_item name="font_color_shadow" data_type="color" type="Color" default="Color( 0, 0, 0, 0 )">
			The color of the font's shadow.
		</theme_item>
		<theme_item name="selection_color" data_type="color" type="Color" default="Color( 0.1, 0.1, 1, 0.8 )">
			The color of the selection box.
		</theme_item>
		<theme_item name="line_separation" data_type="constant" type="int" default="1">
			The vertical space between lines.
		</theme_item>
		<theme_item name="shadow_as_outline" data_type="constant" type="int" default="0">
			Boolean value. If 1 ([code]true[/code]), the shadow will be displayed around the whole text as an outline.
		</theme_item>
		<theme_item name="shadow_offset_x" data_type="constant" type="int" default="1">
			The horizontal offset of the font's shadow.
		</theme_item>
		<theme_item name="shadow_offset_y" data_type="constant" type="int" default="1">
			The vertical offset of the font's shadow.
		</theme_item>
		<theme_item name="table_hseparation" data_type="constant" type="int" default="3">
			The horizontal separation of elements in a table.
		</theme_item>
		<theme_item name="table_vseparation" data_type="constant" type="int" default="3">
			The vertical separation of elements in a table.
		</theme_item>
		<theme_item name="bold_font" data_type="font" type="Font">
			The font used for bold text.
		</theme_item>
		<theme_item name="bold_italics_font" data_type="font" type="Font">
			The font used for bold italics text.
		</theme_item>
		<theme_item name="italics_font" data_type="font" type="Font">
			The font used for italics text.
		</theme_item>
		<theme_item name="mono_font" data_type="font" type="Font">
			The font used for monospace text.
		</theme_item>
		<theme_item name="normal_font" data_type="font" type="Font">
			The default text font.
		</theme_item>
		<theme_item name="focus" data_type="style" type="StyleBox">
			The background used when the [RichTextLabel] is focused.
		</theme_item>
		<theme_item name="normal" data_type="style" type="StyleBox">
			The normal background for the [RichTextLabel].
		</theme_item>
	</theme_items>
</class>