Theme Style Sheet (TSS) files are regular USS files. UI(User Interface) Allows a user to interact with your application. Unity currently supports three UI systems. More info
See in Glossary Toolkit treats TSS as a distinct asset type and uses it for management purposes.
Regular USS syntax and format apply to TSS files, but usually, a theme file contains references to other USS files through the @import
rule.
Note: USS files also support the @import
rule.
You can create different TSS files for different themes and switch between them at runtime. You can use TSS to customize the look and feel for different platforms or devices. You can also create TSS to use different fonts for different languages if your games or applications support multiple languages.
When you add your first UIDocument to a GameObjectThe fundamental object in Unity scenes, which can represent characters, props, scenery, cameras, waypoints, and more. A GameObject’s functionality is defined by the Components attached to it. More info
See in Glossary in your project, it generates a default runtime theme asset at Assets/UI Toolkit/UnityThemes/UnityDefaultTheme.tss
. You can inherit from it, and overwrite or add new styles to create your custom theme.
To create a new TSS:
You can reference a TSS in UXML or C# the same way as you do with USS.
You can also set a TSS as the default theme for a Panel Setting asset. If you have more than one Panel Setting, each one can use a different TSS file.
You can use the @import
rule or the TSS asset’s InspectorA Unity window that displays information about the currently selected GameObject, asset or project settings, allowing you to inspect and edit the values. More info
See in Glossary window to inherit a theme.
The syntax for the @import
rule is:
@import url("<path-to-file>/fileName.tss");
To inherit a theme in the Inspector window:
You can use the @import
rule or the TSS asset’s Inspector window to import a style sheet.
The syntax for the @import
rule is:
@import url("<path-to-file>/fileName.uss");
To import a style sheet in the Inspector window:
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