jb1123

class LockerLayout(Layout):
    """Spacing between children, in pixels."""
    spacing = NumericProperty(0)
    """Padding between layout box and children: [padding_left, padding_top, padding_right, padding_bottom]"""
    padding = VariableListProperty()
    """size of lockers for attaching widgets, layout space divided among lockers proportionally to locker_size"""
    locker_size = ListProperty()
    """Orientation of the layout."""
    orientation = OptionProperty('horizontal', options=('horizontal', 'vertical'))
    """locker box size ad position"""

jb1123

    LockerLayout:
        id: locker1
        lockerid: 0
        orientation: 'horizontal'
        locker_size: [.05, .8, .05]
        LockerLayout:
            id: locker2
            lockerid: 1
            orientation: 'vertical'
            locker_size: [.9, .1]