Kivy的Button类的学习

官方文档：https://kivy.org/doc/stable/api-kivy.uix.button.html#module-kivy.uix.button

Kivy的Button类的学习

1、基类

kivy.uix.behaviors.button.ButtonBehavior, kivy.uix.label.Label

2、属性

2.1 background_color背景色

• Background color, in the format (r, g, b, a). a是透明度，越高可见性越高，0是完全透明。

代码示例

from kivy.app import App
from kivy.uix.button import Button
from kivy.uix.boxlayout import BoxLayoutclass TestApp(App):def build(self):layout = BoxLayout(orientation='vertical')btn1 = Button(text='Hello',background_color=(1, 0, 0, 0.3))btn2 = Button(text='World')layout.add_widget(btn1)layout.add_widget(btn2)return layoutif __name__ == '__main__':TestApp().run()

2.2 background_disabled_down 实际上无用的属性，因为disabled后按钮就不可能会被按下。

2.3 background_disabled_normal 按钮disabled后显示的图片

代码示例

from kivy.app import App
from kivy.uix.button import Button
from kivy.uix.boxlayout import BoxLayoutclass TestApp(App):def build(self):layout = BoxLayout(orientation='vertical')btn1 = Button(text='Hello',background_color=(1, 0, 0, 1),background_disabled_normal='2.png',background_disabled_down='1.png',border=[10,10,20,20])btn2 = Button(text='World',background_normal='2.png',background_down='1.png')btn1.disabled=Truebtn1.background_disabled_normal='2.png'btn1.background_disabled_down='1.png'layout.add_widget(btn1)layout.add_widget(btn2)return layoutif __name__ == '__main__':TestApp().run()

2.4 background_down、 background_normal 按下和没按下的图片

代码示例

from kivy.app import App
from kivy.uix.button import Button
from kivy.uix.boxlayout import BoxLayoutclass TestApp(App):def build(self):layout = BoxLayout(orientation='vertical')btn1 = Button(text='Hello',background_color=(1, 0, 0, 0.3),#    background_normal='2.jpg',#    background_down='1.png',border=[10,10,20,20])btn2 = Button(text='World',background_normal='2.png',background_down='1.png')layout.add_widget(btn1)layout.add_widget(btn2)return layoutif __name__ == '__main__':TestApp().run()

2.4 border 没看懂