Layout

Layouts are used to calculate and assign widget positions.

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 specified as a floating point number in the range 0-1, ie 0.5 is 50%, 1 is 100%.

If you want a widget’s width to be half of the parent’s and their heights to be identical, 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 the value to None. For example, to make a widget that is 250px wide and 30% of the parent’s height, 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.

do_layout(*largs)

This function is called when a layout is needed, with by a trigger. If you are doing a new Layout subclass, don’t call this function directly, use _trigger_layout instead.

New in version 1.0.8.

reposition_child(child, **kwargs)

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