godot/doc/classes/OptionButton.xml
2023-08-22 18:05:50 +08:00

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XML

<?xml version="1.0" encoding="UTF-8" ?>
<class name="OptionButton" inherits="Button" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../class.xsd">
<brief_description>
A button that brings up a dropdown with selectable options when pressed.
</brief_description>
<description>
[OptionButton] is a type of button that brings up a dropdown with selectable items when pressed. The item selected becomes the "current" item and is displayed as the button text.
See also [BaseButton] which contains common properties and methods associated with this node.
[b]Note:[/b] The ID values used for items are limited to 32 bits, not full 64 bits of [int]. This has a range of [code]-2^32[/code] to [code]2^32 - 1[/code], i.e. [code]-2147483648[/code] to [code]2147483647[/code].
[b]Note:[/b] The [member Button.text] and [member Button.icon] properties are set automatically based on the selected item. They shouldn't be changed manually.
</description>
<tutorials>
</tutorials>
<methods>
<method name="add_icon_item">
<return type="void" />
<param index="0" name="texture" type="Texture2D" />
<param index="1" name="label" type="String" />
<param index="2" name="id" type="int" default="-1" />
<description>
Adds an item, with a [param texture] icon, text [param label] and (optionally) [param id]. If no [param id] is passed, the item index will be used as the item's ID. New items are appended at the end.
</description>
</method>
<method name="add_item">
<return type="void" />
<param index="0" name="label" type="String" />
<param index="1" name="id" type="int" default="-1" />
<description>
Adds an item, with text [param label] and (optionally) [param id]. If no [param id] is passed, the item index will be used as the item's ID. New items are appended at the end.
</description>
</method>
<method name="add_separator">
<return type="void" />
<param index="0" name="text" type="String" default="&quot;&quot;" />
<description>
Adds a separator to the list of items. Separators help to group items, and can optionally be given a [param text] header. A separator also gets an index assigned, and is appended at the end of the item list.
</description>
</method>
<method name="clear">
<return type="void" />
<description>
Clears all the items in the [OptionButton].
</description>
</method>
<method name="get_item_icon" qualifiers="const">
<return type="Texture2D" />
<param index="0" name="idx" type="int" />
<description>
Returns the icon of the item at index [param idx].
</description>
</method>
<method name="get_item_id" qualifiers="const">
<return type="int" />
<param index="0" name="idx" type="int" />
<description>
Returns the ID of the item at index [param idx].
</description>
</method>
<method name="get_item_index" qualifiers="const">
<return type="int" />
<param index="0" name="id" type="int" />
<description>
Returns the index of the item with the given [param id].
</description>
</method>
<method name="get_item_metadata" qualifiers="const">
<return type="Variant" />
<param index="0" name="idx" type="int" />
<description>
Retrieves the metadata of an item. Metadata may be any type and can be used to store extra information about an item, such as an external string ID.
</description>
</method>
<method name="get_item_text" qualifiers="const">
<return type="String" />
<param index="0" name="idx" type="int" />
<description>
Returns the text of the item at index [param idx].
</description>
</method>
<method name="get_item_tooltip" qualifiers="const">
<return type="String" />
<param index="0" name="idx" type="int" />
<description>
Returns the tooltip of the item at index [param idx].
</description>
</method>
<method name="get_popup" qualifiers="const">
<return type="PopupMenu" />
<description>
Returns the [PopupMenu] contained in this button.
[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 Window.visible] property.
</description>
</method>
<method name="get_selectable_item" qualifiers="const">
<return type="int" />
<param index="0" name="from_last" type="bool" default="false" />
<description>
Returns the index of the first item which is not disabled, or marked as a separator. If [param from_last] is [code]true[/code], the items will be searched in reverse order.
Returns [code]-1[/code] if no item is found.
</description>
</method>
<method name="get_selected_id" qualifiers="const">
<return type="int" />
<description>
Returns the ID of the selected item, or [code]-1[/code] if no item is selected.
</description>
</method>
<method name="get_selected_metadata" qualifiers="const">
<return type="Variant" />
<description>
Gets the metadata of the selected item. Metadata for items can be set using [method set_item_metadata].
</description>
</method>
<method name="has_selectable_items" qualifiers="const">
<return type="bool" />
<description>
Returns [code]true[/code] if this button contains at least one item which is not disabled, or marked as a separator.
</description>
</method>
<method name="is_item_disabled" qualifiers="const">
<return type="bool" />
<param index="0" name="idx" type="int" />
<description>
Returns [code]true[/code] if the item at index [param idx] is disabled.
</description>
</method>
<method name="is_item_separator" qualifiers="const">
<return type="bool" />
<param index="0" name="idx" type="int" />
<description>
Returns [code]true[/code] if the item at index [param idx] is marked as a separator.
</description>
</method>
<method name="remove_item">
<return type="void" />
<param index="0" name="idx" type="int" />
<description>
Removes the item at index [param idx].
</description>
</method>
<method name="select">
<return type="void" />
<param index="0" name="idx" type="int" />
<description>
Selects an item by index and makes it the current item. This will work even if the item is disabled.
Passing [code]-1[/code] as the index deselects any currently selected item.
</description>
</method>
<method name="set_disable_shortcuts">
<return type="void" />
<param index="0" name="disabled" type="bool" />
<description>
If [code]true[/code], shortcuts are disabled and cannot be used to trigger the button.
</description>
</method>
<method name="set_item_disabled">
<return type="void" />
<param index="0" name="idx" type="int" />
<param index="1" name="disabled" type="bool" />
<description>
Sets whether the item at index [param idx] is disabled.
Disabled items are drawn differently in the dropdown and are not selectable by the user. If the current selected item is set as disabled, it will remain selected.
</description>
</method>
<method name="set_item_icon">
<return type="void" />
<param index="0" name="idx" type="int" />
<param index="1" name="texture" type="Texture2D" />
<description>
Sets the icon of the item at index [param idx].
</description>
</method>
<method name="set_item_id">
<return type="void" />
<param index="0" name="idx" type="int" />
<param index="1" name="id" type="int" />
<description>
Sets the ID of the item at index [param idx].
</description>
</method>
<method name="set_item_metadata">
<return type="void" />
<param index="0" name="idx" type="int" />
<param index="1" name="metadata" type="Variant" />
<description>
Sets the metadata of an item. Metadata may be of any type and can be used to store extra information about an item, such as an external string ID.
</description>
</method>
<method name="set_item_text">
<return type="void" />
<param index="0" name="idx" type="int" />
<param index="1" name="text" type="String" />
<description>
Sets the text of the item at index [param idx].
</description>
</method>
<method name="set_item_tooltip">
<return type="void" />
<param index="0" name="idx" type="int" />
<param index="1" name="tooltip" type="String" />
<description>
Sets the tooltip of the item at index [param idx].
</description>
</method>
<method name="show_popup">
<return type="void" />
<description>
Adjusts popup position and sizing for the [OptionButton], then shows the [PopupMenu]. Prefer this over using [code]get_popup().popup()[/code].
</description>
</method>
</methods>
<members>
<member name="action_mode" type="int" setter="set_action_mode" getter="get_action_mode" overrides="BaseButton" enum="BaseButton.ActionMode" default="0" />
<member name="alignment" type="int" setter="set_text_alignment" getter="get_text_alignment" overrides="Button" enum="HorizontalAlignment" default="0" />
<member name="allow_reselect" type="bool" setter="set_allow_reselect" getter="get_allow_reselect" default="false">
If [code]true[/code], the currently selected item can be selected again.
</member>
<member name="fit_to_longest_item" type="bool" setter="set_fit_to_longest_item" getter="is_fit_to_longest_item" default="true">
If [code]true[/code], minimum size will be determined by the longest item's text, instead of the currently selected one's.
[b]Note:[/b] For performance reasons, the minimum size doesn't update immediately when adding, removing or modifying items.
</member>
<member name="item_count" type="int" setter="set_item_count" getter="get_item_count" default="0">
The number of items to select from.
</member>
<member name="selected" type="int" setter="_select_int" getter="get_selected" default="-1">
The index of the currently selected item, or [code]-1[/code] if no item is selected.
</member>
<member name="toggle_mode" type="bool" setter="set_toggle_mode" getter="is_toggle_mode" overrides="BaseButton" default="true" />
</members>
<signals>
<signal name="item_focused">
<param index="0" name="index" type="int" />
<description>
Emitted when the user navigates to an item using the [member ProjectSettings.input/ui_up] or [member ProjectSettings.input/ui_down] input actions. The index of the item selected is passed as argument.
</description>
</signal>
<signal name="item_selected">
<param index="0" name="index" type="int" />
<description>
Emitted when the current item has been changed by the user. The index of the item selected is passed as argument.
[member allow_reselect] must be enabled to reselect an item.
</description>
</signal>
</signals>
<theme_items>
<theme_item name="font_color" data_type="color" type="Color" default="Color(0.875, 0.875, 0.875, 1)">
Default text [Color] of the [OptionButton].
</theme_item>
<theme_item name="font_disabled_color" data_type="color" type="Color" default="Color(0.875, 0.875, 0.875, 0.5)">
Text [Color] used when the [OptionButton] is disabled.
</theme_item>
<theme_item name="font_focus_color" data_type="color" type="Color" default="Color(0.95, 0.95, 0.95, 1)">
Text [Color] used when the [OptionButton] is focused. Only replaces the normal text color of the button. Disabled, hovered, and pressed states take precedence over this color.
</theme_item>
<theme_item name="font_hover_color" data_type="color" type="Color" default="Color(0.95, 0.95, 0.95, 1)">
Text [Color] used when the [OptionButton] is being hovered.
</theme_item>
<theme_item name="font_hover_pressed_color" data_type="color" type="Color" default="Color(1, 1, 1, 1)">
Text [Color] used when the [OptionButton] is being hovered and pressed.
</theme_item>
<theme_item name="font_outline_color" data_type="color" type="Color" default="Color(1, 1, 1, 1)">
The tint of text outline of the [OptionButton].
</theme_item>
<theme_item name="font_pressed_color" data_type="color" type="Color" default="Color(1, 1, 1, 1)">
Text [Color] used when the [OptionButton] is being pressed.
</theme_item>
<theme_item name="arrow_margin" data_type="constant" type="int" default="4">
The horizontal space between the arrow icon and the right edge of the button.
</theme_item>
<theme_item name="h_separation" data_type="constant" type="int" default="4">
The horizontal space between [OptionButton]'s icon and text. Negative values will be treated as [code]0[/code] when used.
</theme_item>
<theme_item name="modulate_arrow" data_type="constant" type="int" default="0">
If different than [code]0[/code], the arrow icon will be modulated to the font color.
</theme_item>
<theme_item name="outline_size" data_type="constant" type="int" default="0">
The size of the text outline.
[b]Note:[/b] If using a font with [member FontFile.multichannel_signed_distance_field] enabled, its [member FontFile.msdf_pixel_range] must be set to at least [i]twice[/i] the value of [theme_item outline_size] for outline rendering to look correct. Otherwise, the outline may appear to be cut off earlier than intended.
</theme_item>
<theme_item name="font" data_type="font" type="Font">
[Font] of the [OptionButton]'s text.
</theme_item>
<theme_item name="font_size" data_type="font_size" type="int">
Font size of the [OptionButton]'s text.
</theme_item>
<theme_item name="arrow" data_type="icon" type="Texture2D">
The arrow icon to be drawn on the right end of the button.
</theme_item>
<theme_item name="disabled" data_type="style" type="StyleBox">
[StyleBox] used when the [OptionButton] is disabled (for left-to-right layouts).
</theme_item>
<theme_item name="disabled_mirrored" data_type="style" type="StyleBox">
[StyleBox] used when the [OptionButton] is disabled (for right-to-left layouts).
</theme_item>
<theme_item name="focus" data_type="style" type="StyleBox">
[StyleBox] used when the [OptionButton] is focused. The [code]focus[/code] [StyleBox] is displayed [i]over[/i] 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.
</theme_item>
<theme_item name="hover" data_type="style" type="StyleBox">
[StyleBox] used when the [OptionButton] is being hovered (for left-to-right layouts).
</theme_item>
<theme_item name="hover_mirrored" data_type="style" type="StyleBox">
[StyleBox] used when the [OptionButton] is being hovered (for right-to-left layouts).
</theme_item>
<theme_item name="normal" data_type="style" type="StyleBox">
Default [StyleBox] for the [OptionButton] (for left-to-right layouts).
</theme_item>
<theme_item name="normal_mirrored" data_type="style" type="StyleBox">
Default [StyleBox] for the [OptionButton] (for right-to-left layouts).
</theme_item>
<theme_item name="pressed" data_type="style" type="StyleBox">
[StyleBox] used when the [OptionButton] is being pressed (for left-to-right layouts).
</theme_item>
<theme_item name="pressed_mirrored" data_type="style" type="StyleBox">
[StyleBox] used when the [OptionButton] is being pressed (for right-to-left layouts).
</theme_item>
</theme_items>
</class>