Python多个滑块小部件在Kivy中控制背景屏幕或WindowColor _Kivy

先决条件– Kivy中的滑块
Kivy是Python中与平台无关的GUI工具。由于它可以在Android, IOS, Linux和Windows等操作系统上运行。它基本上是用于开发Android应用程序, 但这并不意味着它不能在桌面应用程序上使用。
在本文中, 我们将学习如何在kivy中控制背景颜色, 这意味着, 如果滑动滑块, 则窗口的颜色也会相应地改变。
你可以通过许多不同的方法进行此操作。我们来看一种简单的方法。

????Kivy教程–通过示例学习Kivy。

Basic Approach to make it is very simple: 1) import kivy 2) import kivyApp 3) import BoxLayout 4) set minimum version(optional) 5) Extend the class 6) set up .kv file : -> Set orientation -> Set slider color -> Create canvas.before property -> Create Sliders -> Create label 7) Return layout 8) Run an instance of the class

如何在Kivy中使用多个滑块控制背景色？

# main.py to manipulate the window # color or screen clour in kivy# base Class of your App inherits from the App class. # app:always refers to the instance of your application from kivy.app import App# BoxLayout arranges children in a vertical or horizontal box. # or help to put the childrens at the desired location. from kivy.uix.boxlayout import BoxLayout # creating the root widget used in .kv file class MultipleSliderWidget(BoxLayout): pass# class in which name .kv file must be named Slider.kv. # or creating the App class class Multiple_Slider(App): def build( self ): # returning the instance of SliderWidget class return MultipleSliderWidget()# run the app if __name__ = = '__main__' : Multiple_Slider().run()

现在.kv文件上面的代码是–

# Multiple_Slider.kv file of the main.py file.#.kv file to manipulate the window colour. < MultipleSliderWidget> :# giving the orientation of Slider orientation: "vertical"# initially providing this colour to window slider_colors: 0.5 , 0.5 , 0.5# executed before the canvas group. canvas.before: Color: rgb: root.slider_colors Rectangle: pos: root.pos size: root.size# creating the Slider Slider: min : 0# minimum value of Slider max : 1 # maximum value of Slider value: 0.5# initial value of Slider# when slider moves then to increase value on_value: root.slider_colors[ 0 ] = self .value; Slider: min : 0 max : 1 value: 0.5 on_value: root.slider_colors[ 1 ] = self .valueSlider: min : 0 max : 1 value: 0.5 on_value: root.slider_colors[ 2 ] = self .value# Adding The label Label: font_size: "30sp" # the for loop is for continuously changing # the clour as slider value changes text: "Color:" + ", " .join([ "%.3f" % (i) for i in root.slider_colors]) color: 0 , 0 , 1 , 1

输出如下：