from kivy.app import App
from kivy.uix.button import Button
from kivy.uix.boxlayout import BoxLayout
from kivymd.theming import ThemeManager
from kivy.core.window import Window
from kivy.uix.widget import Widget

class PainterWidget(Widget):
    def __init__(self,**kwargs):
        super(PainterWidget,self).__init__(**kwargs)

class PaintApp(App):
    theme_cls = ThemeManager()
    title = 'Library MGPK'
    def build(self):
        self.theme_cls.theme_style = 'Dark'
        return PainterWidget()
if __name__ == "__main__":
    PaintApp().run()