/
flow.py
36 lines (26 loc) · 920 Bytes
/
flow.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
from kivy.app import App
from kivy.graphics import Color, Rectangle
from kivy.uix.floatlayout import FloatLayout
from kivy.uix.button import Button
class RootWidget(FloatLayout):
def __init__(self, **kwargs):
super(RootWidget, self).__init__(**kwargs)
self.add_widget(
Button(
text="HelloWorld",
size_hint=(.3, .3),
pos_hint={'center_x': .4, 'center_y': .4}
))
class MainApp(App):
def build(self):
self.root = root = RootWidget()
root.bind(size=self._update_rect, pos=self._update_rect)
with root.canvas.before:
Color(0, 1, 0, 1)
self.rect = Rectangle(size=root.size, pos=root.pos)
return root
def _update_rect(self, instance, value):
self.rect.pos = instance.pos
self.rect.size = instance.size
if __name__ == '__main__':
MainApp().run()