Version: 2021.3
UXML element ScrollView
UXML element Slider

UXML element Scroller

C# class: Scroller
Namespace: UnityEngine.UIElements
Base class: VisualElement

属性

The following table lists all the supported attributes.

名称 类型 描述
content-container string child elements are added to this element, usually this
direction string Direction of this scrollbar.
focusable boolean True if the element can be focused.
high-value float Maximum value.
low-value float Minimum value.
name string The name of this VisualElement.

Use this property to write USS selectors that target a specific element.
The standard practice is to give an element a unique name.
picking-mode string Determines if this element can be pick during mouseEvents or IPanel.Pick queries.
style string Reference to the style object of this element.

Contains data computed from USS files or inline styles written to this object in C#.
tabindex int An integer used to sort focusables in the focus ring. Must be greater than or equal to zero.
tooltip string Text to display inside an information box after the user hovers the element for a small amount of time.
usage-hints string A combination of hint values that specify high-level intended usage patterns for the VisualElement.
This property can only be set when the VisualElement is not yet part of a Panel. Once part of a Panel, this property becomes effectively read-only, and attempts to change it will throw an exception.
The specification of proper UsageHints drives the system to make better decisions on how to process or accelerate certain operations based on the anticipated usage pattern.
Note that those hints do not affect behavioral or visual results, but only affect the overall performance of the panel and the elements within.
It’s advised to always consider specifying the proper UsageHints, but keep in mind that some UsageHints might be internally ignored under certain conditions (e.g. due to hardware limitations on the target platform).
value float Value that defines the slider position. It lies between lowValue and highValue.
view-data-key string Used for view data persistence (ie. tree expanded states, scroll position, zoom level).

This is the key used to save/load the view data from the view data store. Not setting this key will disable persistence for this VisualElement.

Style the Scroller

To see which USS selectors affect the components of the Scroller at every level of its hierarchy, use the UI Toolkit Debugger:

  1. In Unity, select Window > UI Toolkit > Debugger.
  2. In the UI Toolkit Debugger window, select Pick Element and then select the visual element that you want to debug.

The UI Toolkit Debugger window displays the following:

  • All child elements of the visual element
  • All the USS selectors for each component of the visual element
  • Detailed information of each USS selector
UXML element ScrollView
UXML element Slider
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