electrum/gui/kivy/uix/ui_screens/settings.kv

Popup:
    id: settings
    title: _('Settings')

    BoxLayout:

        orientation: 'vertical'

        Button:
            text: _('Set PIN Code')
            size_hint: 1, None
            height: '48dp'
            on_release: app.change_password()

        GridLayout:
            cols: 2
            size_hint: 1, None
            height: '100dp'
            Label:
                text: _('Base unit')
                size_hint: 1, None
                height: '48dp'
            Button:
                text: app.base_unit
                size_hint: 1, None
                height: '48dp'
                on_release:
                    app._rotate_bu()
                    self.text = app.base_unit
            Label:
                size_hint: 1, None
                text: 'OpenAlias'
                height: '48dp'
            TextInput:
                size_hint: 1, None
                height: '48dp'
                multiline: False

        Widget:
            size_hint: 1, 1

        BoxLayout:
            Widget:
                size_hint: 0.5, None
            Button:
                size_hint: 0.5, None
                height: '48dp'
                text: _('OK')
                on_release:
                    settings.dismiss()