ProgressBar
Explore the properties and USS selectors of the ProgressBar element to display progress feedback for long-running tasks in your UI.
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A ProgressBar element displays the progress of an ongoing task or process. Use it to provide visual feedback to the user about the progress of a task, such as file downloads, level loading, or any other long-running task.
You can set and for the ProgressBar. The ProgressBar constrains its current value within these bounds. The minimum allowed value is .
lowValuehighValue0Create a ProgressBar
You can create a ProgressBar with UI Builder, UXML, or C#.
To create a ProgressBar in C#:
- Create a new ProgressBar instance.
- Set its properties. The following example sets the title, range, and initial value:
var progressBar = new ProgressBar();progressBar.title = "Loading";progressBar.lowValue = 0f;progressBar.highValue = 100f;progressBar.value = 50f;
Set the ProgressBar size
To set the width and height of the ProgressBar control, apply styles to the root element with the USS class or set the inline style in C#:
unity-progress-bar注
Styling applies to all ProgressBar controls that use the same stylesheet. To size a specific ProgressBar only, use a custom USS class.
.unity-progress-bar.unity-progress-bar { width: 300px; height: 20px;}
To set the size in C#, set the inline style on the ProgressBar instance:
progressBar.style.width = 300;progressBar.style.height = 20;
Style individual parts
Use the USS selectors to style individual parts of the ProgressBar. The following example changes the fill color and background track color:
.unity-progress-bar__background { background-color: #444444;}.unity-progress-bar__progress { background-color: #00aaff;}.unity-progress-bar__title { color: white;}
C# base class and namespace
C# class:
ProgressBarNamespace:
UnityEngine.UIElementsBase class:
AbstractProgressBarInherited UXML attributes
This element inherits the following attributes from its base class:
Name | Type | Description |
|---|---|---|
| | Path of the target property to be bound. |
| | Whether an element can potentially receive focus. If false, the element can't receive focus. If true, the element receives focus only when its |
| | Sets the maximum value of the ProgressBar. |
| | Sets the minimum value of the ProgressBar. |
| | An integer used to sort focusable elements in the focus ring. Must be greater than or equal to zero. Setting the |
| | Sets the title of the ProgressBar that displays in the center of the control. |
| | Sets the progress value. The value is clamped between lowValue and highValue. The progress percentage is calculated as If the value has changed, dispatches an |
This element also inherits the following attributes from :
VisualElementName | Type | Description |
|---|---|---|
| | Logical container where child elements are added. If a child is added to this element, the child is added to this element's content container instead. When iterating over the If the content container is the same as the element itself, child elements are added directly to the element. This is true for most elements but can be overridden by more complex types. The |
| | Assigns a data source to this VisualElement which overrides any inherited data source. This data source is inherited by all children. |
| | Path from the data source to the value. |
| | The possible type of data source assignable to this VisualElement. This information is only used by the UI Builder as a hint to provide some completion to the data source path field when the effective data source cannot be specified at design time. |
| | Returns true if the This flag isn't changed if the VisualElement is disabled implicitly by one of its parents. To verify this, use |
| | Indicates the directionality of the element's text. The value will propagate to the element's children. |
| | 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. |
| | Determines if this element can be the target of pointer events or picked by Elements can not be picked if: - They are invisible- Their Elements with a picking mode of |
| | Sets the style values on a The returned style data, computed from USS files or inline styles written to this object in C#, doesn't represent the fully resolved styles, such as the final height and width of a VisualElement. To access these fully resolved styles, use For information about how to use this property and all the supported USS properties, refer to the Apply styles in C# scripts and USS properties reference manual pages. |
| | Text to display inside an information box after the user hovers the element for a small amount of time. This is only supported in the Editor UI. |
| | A combination of hint values that specify high-level intended usage patterns for the |
| | Used for view data persistence, such as tree expanded states, scroll position, or zoom level. This key is used to save and load the view data from the view data store. If you don't set this key, the persistence is disabled for the associated |
USS classes
The following table lists all the C# public property names and their related USS selector.
C# property | USS selector | Description |
|---|---|---|
| | USS Class Name used to style the |
| | USS Class Name used to style the container of the |
| | USS Class Name used to style the title of the |
| | USS Class Name used to style the container of the title of the |
| | USS Class Name used to style the progress bar of the |
| | USS Class Name used to style the background of the |
| | USS class name of local disabled elements. |
You can also use the Matching Selectors section in the Inspector or the UI Toolkit Debugger to see which USS selectors affect the components of the at every level of its hierarchy.
VisualElement