Slider Widget In Kivy


  • A slider is a UX widget used for selecting and setting a value from a range of values varying from a minimum value to a maximum value.


  • Kivy provides a slider widget for app development.


  • A Kivy slider widget can be placed in an app either in vertical orientation or horizontal orientation


  • The slider control can be specified of a minimum value, maximum value and a default value.


  • Kivy supports several slider widget options for customizing the cursor, cursor image, border, background to be used in different orientations, region between the minimum value and the maximum value.


  • Kivy also supports dealing in terms of normalized value of the range rather than the real range supported by the slider.


  • Normalized value means 0 is the minimum value and 1 is the maximum value.




# Kivy Example App for the slider widget

from import App


from kivy.uix.gridlayout import GridLayout


from kivy.uix.slider import Slider

from kivy.uix.label import Label

from  import NumericProperty



class WidgetContainer(GridLayout):


    def __init__(self, **kwargs):

        super(WidgetContainer, self).__init__(**kwargs)


        # 2 columns in grid layout

        self.cols = 2

        self.brightnessControl = Slider(min=0, max =100)


        # 1st row - one label, one slider    




        # 2nd row - one label for caption, one label for slider value

        self.add_widget(Label(text='Slider Value'))

        self.brightnessValue = Label(text='0')



        # On the slider object Attach a callback for the attribute named value



    def on_value(self, instance, brightness):

        self.brightnessValue.text = "%d"%brightness


# The app class

class SliderExample(App):

    def build(self):

        widgetContainer = WidgetContainer()

        return widgetContainer


# Run the app       

if __name__ == '__main__':




Slider widget in Kivy









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