![]() A layout controller may control its own layout element (the same Game Object it is on itself) or it may control child layout elements.Ī component that functions as a layout controller may also itself function as a layout element at the same time. Layout controllers are components that control the sizes and possibly positions of one or more layout elements, meaning Game Objects with Rect Transforms on. See the reference page for Layout Element for more information. Enable the checkbox for a property you want to override and then specify the value you want to override with. The Layout Element component lets you override the values for one or more of the layout properties. If you want to override the minimum, preferred, or flexible size, you can do that by adding a Layout Element component to the Game Object. They change the preferred width and height to match the sprite or text content. The Image and Text components are two examples of components that provide layout element properties. Certain components will change these layout properties when added to the Game Object. They will by default have minimum, preferred, and flexible sizes of 0. If there is additional available space, flexible size is allocated.Īny Game Object with a Rect Transform on it can function as a layout element.If there is sufficient available space, preferred sizes are allocated. ![]() The basic principles for how layout elements in a layout group are sized is as follows: Layout elements don't directly set their own size, but other components that function as layout controllers can use the information they provide in order to calculate a size to use for them.Ī layout element has properties that defines its own:Įxamples of layout controller components that use the information provided by layout elements are Content Size Fitter and the various Layout Group components. The layout element has certain knowledge about which size it should have. A layout element is an Game Object with a Rect Transform and optionally other components as well. The auto layout system is based on a concept of layout elements and layout controllers. It can optionally be used on some or all elements. The auto layout system is a system built on top of the basic Rect Transform layout system. For example a button can be dynamically resized to exactly fit its text content plus some padding. It also allows elements to automatically be sized according to the contained content. The auto layout system provides ways to place elements in nested layout groups such as horizontal groups, vertical groups, or grids. However, sometimes something a bit more structured can be needed. The Rect Transform layout system is flexible enough to handle a lot of different types of layouts and it also allows placing elements in a complete freeform fashion.
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