RichTextLabel¶
Inherits: Control < CanvasItem < Node < Object
A control for displaying text that can contain different font styles, images, and basic formatting.
Description¶
A control for displaying text that can contain custom fonts, images, and basic formatting. RichTextLabel manages these as an internal tag stack. It also adapts itself to given width/heights.
Note: Assignments to text clear the tag stack and reconstruct it from the property's contents. Any edits made to text will erase previous edits made from other manual sources such as append_text and the push_*
/ pop methods.
Note: RichTextLabel doesn't support entangled BBCode tags. For example, instead of using [b]bold[i]bold italic[/b]italic[/i]
, use [b]bold[i]bold italic[/i][/b][i]italic[/i]
.
Note: push_*/pop_*
functions won't affect BBCode.
Note: Unlike Label, RichTextLabel doesn't have a property to horizontally align text to the center. Instead, enable bbcode_enabled and surround the text in a [center]
tag as follows: [center]Example[/center]
. There is currently no built-in way to vertically align text either, but this can be emulated by relying on anchors/containers and the fit_content property.
Tutorials¶
Properties¶
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Methods¶
void |
add_image ( Texture2D image, int width=0, int height=0, Color color=Color(1, 1, 1, 1), InlineAlignment inline_align=5, Rect2 region=Rect2(0, 0, 0, 0) ) |
void |
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void |
append_text ( String bbcode ) |
void |
clear ( ) |
void |
deselect ( ) |
get_character_line ( int character ) |
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get_character_paragraph ( int character ) |
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get_content_height ( ) const |
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get_content_width ( ) const |
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get_line_count ( ) const |
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get_line_offset ( int line ) |
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get_menu ( ) const |
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get_paragraph_count ( ) const |
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get_paragraph_offset ( int paragraph ) |
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get_parsed_text ( ) const |
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get_selected_text ( ) const |
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get_selection_from ( ) const |
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get_selection_to ( ) const |
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get_total_character_count ( ) const |
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get_v_scroll_bar ( ) |
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get_visible_line_count ( ) const |
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get_visible_paragraph_count ( ) const |
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void |
install_effect ( Variant effect ) |
is_menu_visible ( ) const |
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is_ready ( ) const |
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void |
menu_option ( int option ) |
void |
newline ( ) |
void |
parse_bbcode ( String bbcode ) |
parse_expressions_for_values ( PackedStringArray expressions ) |
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void |
pop ( ) |
void |
pop_all ( ) |
void |
pop_context ( ) |
void |
push_bgcolor ( Color bgcolor ) |
void |
push_bold ( ) |
void |
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void |
push_cell ( ) |
void |
push_color ( Color color ) |
void |
push_context ( ) |
void |
push_customfx ( RichTextEffect effect, Dictionary env ) |
void |
push_dropcap ( String string, Font font, int size, Rect2 dropcap_margins=Rect2(0, 0, 0, 0), Color color=Color(1, 1, 1, 1), int outline_size=0, Color outline_color=Color(0, 0, 0, 0) ) |
void |
push_fgcolor ( Color fgcolor ) |
void |
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void |
push_font_size ( int font_size ) |
void |
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void |
push_indent ( int level ) |
void |
push_italics ( ) |
void |
push_language ( String language ) |
void |
push_list ( int level, ListType type, bool capitalize, String bullet="•" ) |
void |
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void |
push_mono ( ) |
void |
push_normal ( ) |
void |
push_outline_color ( Color color ) |
void |
push_outline_size ( int outline_size ) |
void |
push_paragraph ( HorizontalAlignment alignment, TextDirection base_direction=0, String language="", StructuredTextParser st_parser=0, BitField<JustificationFlag> justification_flags=163, PackedFloat32Array tab_stops=PackedFloat32Array() ) |
void |
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void |
push_table ( int columns, InlineAlignment inline_align=0, int align_to_row=-1 ) |
void |
push_underline ( ) |
remove_paragraph ( int paragraph ) |
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void |
scroll_to_line ( int line ) |
void |
scroll_to_paragraph ( int paragraph ) |
void |
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void |
select_all ( ) |
void |
set_cell_border_color ( Color color ) |
void |
set_cell_padding ( Rect2 padding ) |
void |
set_cell_row_background_color ( Color odd_row_bg, Color even_row_bg ) |
void |
set_cell_size_override ( Vector2 min_size, Vector2 max_size ) |
void |
set_table_column_expand ( int column, bool expand, int ratio=1 ) |
Theme Properties¶
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Signals¶
finished ( )
Triggered when the document is fully loaded.
meta_clicked ( Variant meta )
Triggered when the user clicks on content between meta tags. If the meta is defined in text, e.g. [url={"data"="hi"}]hi[/url]
, then the parameter for this signal will be a String type. If a particular type or an object is desired, the push_meta method must be used to manually insert the data into the tag stack.
meta_hover_ended ( Variant meta )
Triggers when the mouse exits a meta tag.
meta_hover_started ( Variant meta )
Triggers when the mouse enters a meta tag.
Enumerations¶
enum ListType:
ListType LIST_NUMBERS = 0
Each list item has a number marker.
ListType LIST_LETTERS = 1
Each list item has a letter marker.
ListType LIST_ROMAN = 2
Each list item has a roman number marker.
ListType LIST_DOTS = 3
Each list item has a filled circle marker.
Copies the selected text.
Selects the whole RichTextLabel text.
Represents the size of the MenuItems enum.
Property Descriptions¶
AutowrapMode autowrap_mode = 3
void set_autowrap_mode ( AutowrapMode value )
AutowrapMode get_autowrap_mode ( )
If set to something other than TextServer.AUTOWRAP_OFF, the text gets wrapped inside the node's bounding rectangle. To see how each mode behaves, see AutowrapMode.
bool bbcode_enabled = false
If true
, the label uses BBCode formatting.
If true
, a right-click displays the context menu.
Array custom_effects = []
The currently installed custom effects. This is an array of RichTextEffects.
To add a custom effect, it's more convenient to use install_effect.
bool deselect_on_focus_loss_enabled = true
If true
, the selected text will be deselected when focus is lost.
bool drag_and_drop_selection_enabled = true
If true
, allow drag and drop of selected text.
bool fit_content = false
If true
, the label's minimum size will be automatically updated to fit its content, matching the behavior of Label.
bool hint_underlined = true
If true
, the label underlines hint tags such as [hint=description]{text}[/hint]
.
String language = ""
Language code used for line-breaking and text shaping algorithms, if left empty current locale is used instead.
bool meta_underlined = true
If true
, the label underlines meta tags such as [url]{text}[/url]
.
int progress_bar_delay = 1000
The delay after which the loading progress bar is displayed, in milliseconds. Set to -1
to disable progress bar entirely.
Note: Progress bar is displayed only if threaded is enabled.
bool scroll_active = true
If true
, the scrollbar is visible. Setting this to false
does not block scrolling completely. See scroll_to_line.
bool scroll_following = false
If true
, the window scrolls down to display new content automatically.
bool selection_enabled = false
If true
, the label allows text selection.
bool shortcut_keys_enabled = true
If true
, shortcut keys for context menu items are enabled, even if the context menu is disabled.
StructuredTextParser structured_text_bidi_override = 0
void set_structured_text_bidi_override ( StructuredTextParser value )
StructuredTextParser get_structured_text_bidi_override ( )
Set BiDi algorithm override for the structured text.
Array structured_text_bidi_override_options = []
void set_structured_text_bidi_override_options ( Array value )
Array get_structured_text_bidi_override_options ( )
Set additional options for BiDi override.
int tab_size = 4
The number of spaces associated with a single tab length. Does not affect \t
in text tags, only indent tags.
String text = ""
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.
Note: If bbcode_enabled is true
, it is unadvised to use the +=
operator with text
(e.g. text += "some string"
) as it replaces the whole text and can cause slowdowns. It will also erase all BBCode that was added to stack using push_*
methods. Use append_text for adding text instead, unless you absolutely need to close a tag that was opened in an earlier method call.
TextDirection text_direction = 0
void set_text_direction ( TextDirection value )
TextDirection get_text_direction ( )
Base text writing direction.
bool threaded = false
If true
, text processing is done in a background thread.
int visible_characters = -1
The number of characters to display. If set to -1
, all characters are displayed. This can be useful when animating the text appearing in a dialog box.
Note: Setting this property updates visible_ratio accordingly.
VisibleCharactersBehavior visible_characters_behavior = 0
void set_visible_characters_behavior ( VisibleCharactersBehavior value )
VisibleCharactersBehavior get_visible_characters_behavior ( )
Sets the clipping behavior when visible_characters or visible_ratio is set. See VisibleCharactersBehavior for more info.
float visible_ratio = 1.0
The fraction of characters to display, relative to the total number of characters (see get_total_character_count). If set to 1.0
, all characters are displayed. If set to 0.5
, only half of the characters will be displayed. This can be useful when animating the text appearing in a dialog box.
Note: Setting this property updates visible_characters accordingly.
Method Descriptions¶
void add_image ( Texture2D image, int width=0, int height=0, Color color=Color(1, 1, 1, 1), InlineAlignment inline_align=5, Rect2 region=Rect2(0, 0, 0, 0) )
Adds an image's opening and closing tags to the tag stack, optionally providing a width
and height
to resize the image, a color
to tint the image and a region
to only use parts of the image.
If width
or height
is set to 0, the image size will be adjusted in order to keep the original aspect ratio.
If width
and height
are not set, but region
is, the region's rect will be used.
void add_text ( String text )
Adds raw non-BBCode-parsed text to the tag stack.
void append_text ( String bbcode )
Parses bbcode
and adds tags to the tag stack as needed.
Note: Using this method, you can't close a tag that was opened in a previous append_text 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 text instead of using append_text.
void clear ( )
Clears the tag stack.
Note: This method will not modify text, but setting text to an empty string also clears the stack.
void deselect ( )
Clears the current selection.
int get_character_line ( int character )
Returns the line number of the character position provided.
Note: If threaded is enabled, this method returns a value for the loaded part of the document. Use is_ready or finished to determine whether document is fully loaded.
int get_character_paragraph ( int character )
Returns the paragraph number of the character position provided.
Note: If threaded is enabled, this method returns a value for the loaded part of the document. Use is_ready or finished to determine whether document is fully loaded.
int get_content_height ( ) const
Returns the height of the content.
Note: If threaded is enabled, this method returns a value for the loaded part of the document. Use is_ready or finished to determine whether document is fully loaded.
int get_content_width ( ) const
Returns the width of the content.
Note: If threaded is enabled, this method returns a value for the loaded part of the document. Use is_ready or finished to determine whether document is fully loaded.
int get_line_count ( ) const
Returns the total number of lines in the text. Wrapped text is counted as multiple lines.
Note: If threaded is enabled, this method returns a value for the loaded part of the document. Use is_ready or finished to determine whether document is fully loaded.
float get_line_offset ( int line )
Returns the vertical offset of the line found at the provided index.
Note: If threaded is enabled, this method returns a value for the loaded part of the document. Use is_ready or finished to determine whether document is fully loaded.
Returns the PopupMenu of this RichTextLabel. By default, this menu is displayed when right-clicking on the RichTextLabel.
You can add custom menu items or remove standard ones. Make sure your IDs don't conflict with the standard ones (see MenuItems). For example:
func _ready():
var menu = get_menu()
# Remove "Select All" item.
menu.remove_item(MENU_SELECT_ALL)
# Add custom items.
menu.add_separator()
menu.add_item("Duplicate Text", MENU_MAX + 1)
# Connect callback.
menu.id_pressed.connect(_on_item_pressed)
func _on_item_pressed(id):
if id == MENU_MAX + 1:
add_text("\n" + get_parsed_text())
public override void _Ready()
{
var menu = GetMenu();
// Remove "Select All" item.
menu.RemoveItem(RichTextLabel.MenuItems.SelectAll);
// Add custom items.
menu.AddSeparator();
menu.AddItem("Duplicate Text", RichTextLabel.MenuItems.Max + 1);
// Add event handler.
menu.IdPressed += OnItemPressed;
}
public void OnItemPressed(int id)
{
if (id == TextEdit.MenuItems.Max + 1)
{
AddText("\n" + GetParsedText());
}
}
Warning: 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 Window.visible property.
int get_paragraph_count ( ) const
Returns the total number of paragraphs (newlines or p
tags in the tag stack's text tags). Considers wrapped text as one paragraph.
float get_paragraph_offset ( int paragraph )
Returns the vertical offset of the paragraph found at the provided index.
Note: If threaded is enabled, this method returns a value for the loaded part of the document. Use is_ready or finished to determine whether document is fully loaded.
String get_parsed_text ( ) const
Returns the text without BBCode mark-up.
String get_selected_text ( ) const
Returns the current selection text. Does not include BBCodes.
int get_selection_from ( ) const
Returns the current selection first character index if a selection is active, -1
otherwise. Does not include BBCodes.
int get_selection_to ( ) const
Returns the current selection last character index if a selection is active, -1
otherwise. Does not include BBCodes.
int get_total_character_count ( ) const
Returns the total number of characters from text tags. Does not include BBCodes.
VScrollBar get_v_scroll_bar ( )
Returns the vertical scrollbar.
Warning: 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 CanvasItem.visible property.
int get_visible_line_count ( ) const
Returns the number of visible lines.
Note: If threaded is enabled, this method returns a value for the loaded part of the document. Use is_ready or finished to determine whether document is fully loaded.
int get_visible_paragraph_count ( ) const
Returns the number of visible paragraphs. A paragraph is considered visible if at least one of its lines is visible.
Note: If threaded is enabled, this method returns a value for the loaded part of the document. Use is_ready or finished to determine whether document is fully loaded.
void install_effect ( Variant effect )
Installs a custom effect. effect
should be a valid RichTextEffect.
Returns whether the menu is visible. Use this instead of get_menu().visible
to improve performance (so the creation of the menu is avoided).
bool is_ready ( ) const
If threaded is enabled, returns true
if the background thread has finished text processing, otherwise always return true
.
Executes a given action as defined in the MenuItems enum.
void newline ( )
Adds a newline tag to the tag stack.
void parse_bbcode ( String bbcode )
The assignment version of append_text. Clears the tag stack and inserts the new content.
Dictionary parse_expressions_for_values ( PackedStringArray expressions )
Parses BBCode parameter expressions
into a dictionary.
void pop ( )
Terminates the current tag. Use after push_*
methods to close BBCodes manually. Does not need to follow add_*
methods.
void pop_all ( )
Terminates all tags opened by push_*
methods.
void pop_context ( )
Terminates tags opened after the last push_context call (including context marker), or all tags if there's no context marker on the stack.
void push_bgcolor ( Color bgcolor )
Adds a [bgcolor]
tag to the tag stack.
void push_bold ( )
Adds a [font]
tag with a bold font to the tag stack. This is the same as adding a [b]
tag if not currently in a [i]
tag.
void push_bold_italics ( )
Adds a [font]
tag with a bold italics font to the tag stack.
void push_cell ( )
Adds a [cell]
tag to the tag stack. Must be inside a [table]
tag. See push_table for details.
void push_color ( Color color )
Adds a [color]
tag to the tag stack.
void push_context ( )
Adds a context marker to the tag stack. See pop_context.
void push_customfx ( RichTextEffect effect, Dictionary env )
Adds a custom effect tag to the tag stack. The effect does not need to be in custom_effects. The environment is directly passed to the effect.
void push_dropcap ( String string, Font font, int size, Rect2 dropcap_margins=Rect2(0, 0, 0, 0), Color color=Color(1, 1, 1, 1), int outline_size=0, Color outline_color=Color(0, 0, 0, 0) )
Adds a [dropcap]
tag to the tag stack. Drop cap (dropped capital) is a decorative element at the beginning of a paragraph that is larger than the rest of the text.
void push_fgcolor ( Color fgcolor )
Adds a [fgcolor]
tag to the tag stack.
void push_font ( Font font, int font_size=0 )
Adds a [font]
tag to the tag stack. Overrides default fonts for its duration.
Passing 0
to font_size
will use the existing default font size.
void push_font_size ( int font_size )
Adds a [font_size]
tag to the tag stack. Overrides default font size for its duration.
void push_hint ( String description )
Adds a [hint]
tag to the tag stack. Same as BBCode [hint=something]{text}[/hint]
.
void push_indent ( int level )
Adds an [indent]
tag to the tag stack. Multiplies level
by current tab_size to determine new margin length.
void push_italics ( )
Adds a [font]
tag with an italics font to the tag stack. This is the same as adding an [i]
tag if not currently in a [b]
tag.
void push_language ( String language )
Adds language code used for text shaping algorithm and Open-Type font features.
void push_list ( int level, ListType type, bool capitalize, String bullet="•" )
Adds [ol]
or [ul]
tag to the tag stack. Multiplies level
by current tab_size to determine new margin length.
void push_meta ( Variant data )
Adds a meta tag to the tag stack. Similar to the BBCode [url=something]{text}[/url]
, but supports non-String metadata types.
void push_mono ( )
Adds a [font]
tag with a monospace font to the tag stack.
void push_normal ( )
Adds a [font]
tag with a normal font to the tag stack.
void push_outline_color ( Color color )
Adds a [outline_color]
tag to the tag stack. Adds text outline for its duration.
void push_outline_size ( int outline_size )
Adds a [outline_size]
tag to the tag stack. Overrides default text outline size for its duration.
void push_paragraph ( HorizontalAlignment alignment, TextDirection base_direction=0, String language="", StructuredTextParser st_parser=0, BitField<JustificationFlag> justification_flags=163, PackedFloat32Array tab_stops=PackedFloat32Array() )
Adds a [p]
tag to the tag stack.
void push_strikethrough ( )
Adds a [s]
tag to the tag stack.
void push_table ( int columns, InlineAlignment inline_align=0, int align_to_row=-1 )
Adds a [table=columns,inline_align]
tag to the tag stack.
void push_underline ( )
Adds a [u]
tag to the tag stack.
bool remove_paragraph ( int paragraph )
Removes a paragraph of content from the label. Returns true
if the paragraph exists.
The paragraph
argument is the index of the paragraph to remove, it can take values in the interval [0, get_paragraph_count() - 1]
.
void scroll_to_line ( int line )
Scrolls the window's top line to match line
.
void scroll_to_paragraph ( int paragraph )
Scrolls the window's top line to match first line of the paragraph
.
void scroll_to_selection ( )
Scrolls to the beginning of the current selection.
void select_all ( )
Select all the text.
If selection_enabled is false
, no selection will occur.
void set_cell_border_color ( Color color )
Sets color of a table cell border.
void set_cell_padding ( Rect2 padding )
Sets inner padding of a table cell.
void set_cell_row_background_color ( Color odd_row_bg, Color even_row_bg )
Sets color of a table cell. Separate colors for alternating rows can be specified.
void set_cell_size_override ( Vector2 min_size, Vector2 max_size )
Sets minimum and maximum size overrides for a table cell.
void set_table_column_expand ( int column, bool expand, int ratio=1 )
Edits the selected column's expansion options. If expand
is true
, 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 expand
is false
, the column will not contribute to the total ratio.
Theme Property Descriptions¶
Color default_color = Color(1, 1, 1, 1)
The default text color.
Color font_outline_color = Color(1, 1, 1, 1)
The default tint of text outline.
Color font_selected_color = Color(0, 0, 0, 0)
The color of selected text, used when selection_enabled is true
. If equal to Color(0, 0, 0, 0)
, it will be ignored.
Color font_shadow_color = Color(0, 0, 0, 0)
The color of the font's shadow.
Color selection_color = Color(0.1, 0.1, 1, 0.8)
The color of the selection box.
Color table_border = Color(0, 0, 0, 0)
The default cell border color.
Color table_even_row_bg = Color(0, 0, 0, 0)
The default background color for even rows.
Color table_odd_row_bg = Color(0, 0, 0, 0)
The default background color for odd rows.
int line_separation = 0
The vertical space between lines.
int outline_size = 0
The size of the text outline.
Note: If using a font with FontFile.multichannel_signed_distance_field enabled, its FontFile.msdf_pixel_range must be set to at least twice the value of outline_size for outline rendering to look correct. Otherwise, the outline may appear to be cut off earlier than intended.
int shadow_offset_x = 1
The horizontal offset of the font's shadow.
int shadow_offset_y = 1
The vertical offset of the font's shadow.
int shadow_outline_size = 1
The size of the shadow outline.
int table_h_separation = 3
The horizontal separation of elements in a table.
int table_v_separation = 3
The vertical separation of elements in a table.
int text_highlight_h_padding = 3
The horizontal padding around a highlighting and background color box.
int text_highlight_v_padding = 3
The vertical padding around a highlighting and background color box.
Font bold_font
The font used for bold text.
Font bold_italics_font
The font used for bold italics text.
Font italics_font
The font used for italics text.
Font mono_font
The font used for monospace text.
Font normal_font
The default text font.
int bold_font_size
The font size used for bold text.
int bold_italics_font_size
The font size used for bold italics text.
int italics_font_size
The font size used for italics text.
int mono_font_size
The font size used for monospace text.
int normal_font_size
The default text font size.
StyleBox focus
The background used when the RichTextLabel is focused. The focus
StyleBox is displayed over the base StyleBox, so a partially transparent StyleBox should be used to ensure the base StyleBox remains visible. A StyleBox that represents an outline or an underline works well for this purpose. To disable the focus visual effect, assign a StyleBoxEmpty resource. Note that disabling the focus visual effect will harm keyboard/controller navigation usability, so this is not recommended for accessibility reasons.
StyleBox normal
The normal background for the RichTextLabel.