IntrinsicHeight class

A widget that sizes its child to the child's intrinsic height.

This class is useful, for example, when unlimited height is available and you would like a child that would otherwise attempt to expand infinitely to instead size itself to a more reasonable height. Additionally, putting a Row inside an IntrinsicHeight will allow all Row children to be as tall as the tallest child.

The constraints that this widget passes to its child will adhere to the parent's constraints, so if the constraints are not large enough to satisfy the child's maximum intrinsic height, then the child will get less height than it otherwise would. Likewise, if the minimum height constraint is larger than the child's maximum intrinsic height, the child will be given more height than it otherwise would.

This class is relatively expensive, because it adds a speculative layout pass before the final layout phase. Avoid using it where possible. In the worst case, this widget can result in a layout that is O(N²) in the depth of the tree.

See also:

• Align, a widget that aligns its child within itself. This can be used to loosen the constraints passed to the RenderIntrinsicHeight, allowing the RenderIntrinsicHeight's child to be smaller than that of its parent.
• Column, which when used with CrossAxisAlignment.stretch can be used to loosen just the height constraints that are passed to the RenderIntrinsicHeight, allowing the RenderIntrinsicHeight's child's height to be smaller than that of its parent.
• The catalog of layout widgets.