KIVY Button¶
Button — Kivy 2.3.0 documentation
Button¶
Module: kivy.uix.button
Added in 1.0.0
The Button is a Label with associated actions that are triggered when the button is pressed (or released after a click/touch). To configure the button, the same properties (padding, font_size, etc) and sizing system are used as for the Label class:
按钮(Button)是一个带有相关动作的标签(Label),这些动作在按钮被按下(或点击/触摸后释放)时触发。为了配置按钮,我们使用了与标签(Label)类相同的属性(如内边距padding、字体大小font_size等)和尺寸系统。
button = Button(text='Hello world', font_size=14)
To attach a callback when the button is pressed (clicked/touched), use bind
:
当按钮被按下(点击/触摸)时,要附加一个回调函数,可以使用bind
方法。
def callback(instance):
print('The button <%s> is being pressed' % instance.text)
btn1 = Button(text='Hello world 1')
btn1.bind(on_press=callback)
btn2 = Button(text='Hello world 2')
btn2.bind(on_press=callback)
If you want to be notified every time the button state changes, you can bind to the Button.state
property:
如果你想要在每次按钮状态发生变化时都收到通知,你可以将事件绑定到Button.state
属性上:
def callback(instance, value):
print('My button <%s> state is <%s>' % (instance, value))
btn1 = Button(text='Hello world 1')
btn1.bind(state=callback)
Kv Example:
Button:
text: 'press me'
on_press: print("ouch! More gently please")
on_release: print("ahhh")
on_state:
print("my current state is {}".format(self.state))
APIHide Description ⇑
class kivy.uix.button.Button(**kwargs)¶
Bases: kivy.uix.behaviors.button.ButtonBehavior, kivy.uix.label.Label
Button class, see module documentation for more information.
Changed in version 1.8.0: The behavior / logic of the button has been moved to ButtonBehaviors
.
background_color¶
Background color, in the format (r, g, b, a). 背景颜色,格式为(r, g, b, a)。
This acts as a multiplier to the texture color. The default texture is grey, so just setting the background color will give a darker result. To set a plain color, set the background_normal to ''
.
它作为纹理颜色的一个乘数因子。默认纹理是灰色的,所以仅仅设置背景颜色会得到一个更暗的结果。要设置纯色,请将background_normal
属性设置为空字符串('')。
New in version 1.0.8. 此功能在版本1.0.8中新增。
The background_color is a ColorProperty and defaults to [1, 1, 1, 1].background_color
是一个ColorProperty,其默认值为[1, 1, 1, 1](即白色,完全不透明)。
Changed in version 2.0.0: Changed from ListProperty to ColorProperty.
在版本2.0.0中更改:从ListProperty更改为ColorProperty。
background_disabled_down¶
Background image of the button used for the default graphical representation when the button is disabled and pressed.
New in version 1.8.0.
background_disabled_down is a StringProperty and defaults to ‘atlas://data/images/defaulttheme/button_disabled_pressed’.
background_disabled_normal¶
Background image of the button used for the default graphical representation when the button is disabled and not pressed.
按钮的背景图像,用于在按钮被禁用且被按下时的默认图形表示。
New in version 1.8.0. 此功能在版本1.8.0中新增。
background_disabled_normal is a StringProperty and defaults to ‘atlas://data/images/defaulttheme/button_disabled’.
background_down¶
Background image of the button used for the default graphical representation when the button is pressed.
按钮的背景图像,用于按钮被按下时的默认图形表示。
New in version 1.0.4. 此功能在版本1.0.4中新增。
background_down is a StringProperty and defaults to ‘atlas://data/images/defaulttheme/button_pressed’.background_disabled_down
是一个StringProperty
,其默认值为'atlas://data/images/defaulttheme/button_disabled_pressed'
。
background_normal¶
Background image of the button used for the default graphical representation when the button is not pressed.
按钮的背景图像,用于按钮未被按下时的默认图形表示。
New in version 1.0.4. 此功能在版本1.0.4中新增。
background_normal is a StringProperty and defaults to ‘atlas://data/images/defaulttheme/button’.background_normal
是一个StringProperty
,其默认值为 'atlas://data/images/defaulttheme/button'
。
border¶
Border used for BorderImage graphics instruction. Used with background_normal and background_down. Can be used for custom backgrounds.
边框,用于BorderImage
图形指令。与background_normal
和background_down
一起使用。可用于自定义背景。
It must be a list of four values: (bottom, right, top, left). Read the BorderImage instruction for more information about how to use it.
它必须是一个包含四个值的列表:(底部, 右侧, 顶部, 左侧)。要获取更多关于如何使用它的信息,请阅读BorderImage
指令的说明。
border is a ListProperty and defaults to (16, 16, 16, 16)border
是一个ListProperty
,其默认值为(16, 16, 16, 16)。
原文地址:https://blog.csdn.net/xinzhengLUCK/article/details/140306902
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