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Widgets

A widget is a rust type which implements the Widget trait. A widget can contain ‘local’ data which can be manipulated at build time, during event handling, and during the drawing phase. Each widget is given an Entity id when built into the app.

Entities

An Entity is an id associated with each widget in your gui application. Under the hood an entity is an id which can be used to get and set various properties, such as style properties, which are stored in State.

State

State represents the ‘global’ data of the elements in a gui application. For this reason, a mutable reference to state is passed around when building entities, handling events, and drawing.

Hierarchy

Elements of a gui application are organised into a tree, where each element can have a single parent and multiple children. In tuix this tree is called the Hierarchy, and can be found in State. This hierarchy is used to propagate events as well as to draw the elements in the correct order.