Layout

Layouts is a way to calculate and assign position of widgets. The Layout class itself cannot be used directly. You must use one of:

Understanding size_hint property in Widget

The size_hint is mostly used in Layout. This is the size, in percent, not in pixels. The format is:

widget.size_hint = (width_percent, height_percent)

The percent is between the range 0-1: 1 mean 100%.

So, if you want a widget width to be only the half of the parent, and his height to be the same as his parent, you can do:

widget.size_hint = (0.5, 1.0)

If you don’t want to use size_hint for one of width or height, set his value to None. For example, if you want a widget width to be 250px, and his height to 30% of his parent, you can write:

widget.size_hint = (None, 0.3)
widget.width = 250
class kivy.uix.layout.Layout(**kwargs)

Bases: kivy.uix.widget.Widget

Layout interface class, used to implement every layout. Check module documentation for more information.

minimum_size

Minimum size required by the layout. This property is used by Layout to perfom his layout calculations. If the widgets size (width or height) is smaller than the minimum size, it will be resized to be at least minimum size.

minimum_size is a AliasProperty.

reposition_child(child, **kwargs)

Force the child to be repositioned on the screen. This method is used internally in boxlayout.