godot/doc/classes/RichTextLabel.xml
Alexander Pech d73281a350
Keep RichTextLabel visible character properties in sync
The RichTextLabel class is inconsistent in how it updates the
visible_characters and percent_visible properties when either is changed.

To keep both properties consistent, update percent_visible when setting the
visible_characters property.
For both properties, when setting one, notify change for the other.

Docs updated for member set_visible_characters on RichTextLabel class.

(cherry picked from commit 463e2002ab)
2021-01-15 16:49:46 +01:00

474 lines
20 KiB
XML

<?xml version="1.0" encoding="UTF-8" ?>
<class name="RichTextLabel" inherits="Control" version="3.2">
<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] 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.
</description>
<tutorials>
<link title="BBCode in RichTextLabel">https://docs.godotengine.org/en/3.2/tutorials/gui/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">
</return>
<argument index="0" name="image" type="Texture">
</argument>
<argument index="1" name="width" type="int" default="0">
</argument>
<argument index="2" name="height" type="int" default="0">
</argument>
<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">
</return>
<argument index="0" name="text" type="String">
</argument>
<description>
Adds raw non-BBCode-parsed text to the tag stack.
</description>
</method>
<method name="append_bbcode">
<return type="int" enum="Error">
</return>
<argument index="0" name="bbcode" type="String">
</argument>
<description>
Parses [code]bbcode[/code] and adds tags to the tag stack as needed. Returns the result of the parsing, [constant OK] if successful.
[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].
</description>
</method>
<method name="clear">
<return type="void">
</return>
<description>
Clears the tag stack and sets [member bbcode_text] to an empty string.
</description>
</method>
<method name="get_content_height" qualifiers="const">
<return type="int">
</return>
<description>
Returns the height of the content.
</description>
</method>
<method name="get_line_count" qualifiers="const">
<return type="int">
</return>
<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_total_character_count" qualifiers="const">
<return type="int">
</return>
<description>
Returns the total number of characters from text tags. Does not include BBCodes.
</description>
</method>
<method name="get_v_scroll">
<return type="VScrollBar">
</return>
<description>
Returns the vertical scrollbar.
</description>
</method>
<method name="get_visible_line_count" qualifiers="const">
<return type="int">
</return>
<description>
Returns the number of visible lines.
</description>
</method>
<method name="install_effect">
<return type="void">
</return>
<argument index="0" name="effect" type="Variant">
</argument>
<description>
Installs a custom effect. [code]effect[/code] should be a valid [RichTextEffect].
</description>
</method>
<method name="newline">
<return type="void">
</return>
<description>
Adds a newline tag to the tag stack.
</description>
</method>
<method name="parse_bbcode">
<return type="int" enum="Error">
</return>
<argument index="0" name="bbcode" type="String">
</argument>
<description>
The assignment version of [method append_bbcode]. Clears the tag stack and inserts the new content. Returns [constant OK] if parses [code]bbcode[/code] successfully.
</description>
</method>
<method name="parse_expressions_for_values">
<return type="Dictionary">
</return>
<argument index="0" name="expressions" type="PoolStringArray">
</argument>
<description>
Parses BBCode parameter [code]expressions[/code] into a dictionary.
</description>
</method>
<method name="pop">
<return type="void">
</return>
<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">
</return>
<argument index="0" name="align" type="int" enum="RichTextLabel.Align">
</argument>
<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">
</return>
<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">
</return>
<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">
</return>
<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">
</return>
<argument index="0" name="color" type="Color">
</argument>
<description>
Adds a [code][color][/code] tag to the tag stack.
</description>
</method>
<method name="push_font">
<return type="void">
</return>
<argument index="0" name="font" type="Font">
</argument>
<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">
</return>
<argument index="0" name="level" type="int">
</argument>
<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">
</return>
<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">
</return>
<argument index="0" name="type" type="int" enum="RichTextLabel.ListType">
</argument>
<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">
</return>
<argument index="0" name="data" type="Variant">
</argument>
<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">
</return>
<description>
Adds a [code][font][/code] tag with a monospace font to the tag stack.
</description>
</method>
<method name="push_normal">
<return type="void">
</return>
<description>
Adds a [code][font][/code] tag with a normal font to the tag stack.
</description>
</method>
<method name="push_strikethrough">
<return type="void">
</return>
<description>
Adds a [code][s][/code] tag to the tag stack.
</description>
</method>
<method name="push_table">
<return type="void">
</return>
<argument index="0" name="columns" type="int">
</argument>
<description>
Adds a [code][table=columns][/code] tag to the tag stack.
</description>
</method>
<method name="push_underline">
<return type="void">
</return>
<description>
Adds a [code][u][/code] tag to the tag stack.
</description>
</method>
<method name="remove_line">
<return type="bool">
</return>
<argument index="0" name="line" type="int">
</argument>
<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">
</return>
<argument index="0" name="line" type="int">
</argument>
<description>
Scrolls the window's top line to match [code]line[/code].
</description>
</method>
<method name="set_table_column_expand">
<return type="void">
</return>
<argument index="0" name="column" type="int">
</argument>
<argument index="1" name="expand" type="bool">
</argument>
<argument index="2" name="ratio" type="int">
</argument>
<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.
</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. 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="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" override="true" 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">
</argument>
<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">
</argument>
<description>
Triggers when the mouse exits a meta tag.
</description>
</signal>
<signal name="meta_hover_started">
<argument index="0" name="meta" type="Variant">
</argument>
<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="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="bold_font" type="Font">
The font used for bold text.
</theme_item>
<theme_item name="bold_italics_font" type="Font">
The font used for bold italics text.
</theme_item>
<theme_item name="default_color" type="Color" default="Color( 1, 1, 1, 1 )">
The default text color.
</theme_item>
<theme_item name="focus" type="StyleBox">
The background The background used when the [RichTextLabel] is focused.
</theme_item>
<theme_item name="font_color_selected" 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" type="Color" default="Color( 0, 0, 0, 0 )">
The color of the font's shadow.
</theme_item>
<theme_item name="italics_font" type="Font">
The font used for italics text.
</theme_item>
<theme_item name="line_separation" type="int" default="1">
The vertical space between lines.
</theme_item>
<theme_item name="mono_font" type="Font">
The font used for monospace text.
</theme_item>
<theme_item name="normal" type="StyleBox">
The normal background for the [RichTextLabel].
</theme_item>
<theme_item name="normal_font" type="Font">
The default text font.
</theme_item>
<theme_item name="selection_color" type="Color" default="Color( 0.1, 0.1, 1, 0.8 )">
The color of the selection box.
</theme_item>
<theme_item name="shadow_as_outline" 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" type="int" default="1">
The horizontal offset of the font's shadow.
</theme_item>
<theme_item name="shadow_offset_y" type="int" default="1">
The vertical offset of the font's shadow.
</theme_item>
<theme_item name="table_hseparation" type="int" default="3">
The horizontal separation of elements in a table.
</theme_item>
<theme_item name="table_vseparation" type="int" default="3">
The vertical separation of elements in a table.
</theme_item>
</theme_items>
</class>