PyQt Advanced Slider

A clean and customizable int and float slider widget for PyQt and PySide

Features

• Supports int and float
• Supports dynamic switching between types
• Customizable decimal places
• Customizable prefix and suffix
• Customizable decimal separator and thousands separator
• Supports keyboard and mouse wheel inputs
• Modern and customizable UI
• Works with PyQt5, PyQt6, PySide2, and PySide6

Installation

pip install pyqt-advanced-slider

Usage

Import the Slider class and add it to your window like any other PyQt Widget:

from PyQt6.QtWidgets import QMainWindow
from pyqt_advanced_slider import Slider


class Window(QMainWindow):
    def __init__(self):
        super().__init__(parent=None)

        slider = Slider(self)  # Add slider
        slider.setRange(-50, 100)  # Set min and max
        slider.setValue(25)  # Set value
        slider.valueChanged.connect(self.slider_value_changed)  # Connect change event
    
    # Called every time the slider value changes
    def slider_value_changed(self, value):
        print(value)

You can also set the minimum and maximum of the slider individually with the setMinimum() and setMaximum() methods:

slider.setMinimum(-50)  # Default: 0
slider.setMaximum(100)  # Default: 10

The getValue() method returns the current value while the getValueFormatted() method returns the value as the formatted string that is being displayed on the slider:

value = slider.getValue()  # 2500.0
value_formatted = slider.getValueFormatted()  # e.g. '~2,500.00 €'

NOTE:
When getting the value of the slider using the getValue() method or by subscribing to the valueChanged event, it will either be an int or a float, depending on whether float values are enabled or disabled for the slider.

Customization

• Making the slider a float slider:

slider.setFloat(True)  # Default: False
slider.setDecimals(2)  # Default: 1

• Adding a prefix and a suffix:

slider.setPrefix('~')   # Default: empty string
slider.setSuffix(' €')  # Default: empty string

EXAMPLE:
The value 100 formatted with ~ as the prefix and ° as the suffix would be shown as ~100°

• Customizing the formatting of the value shown on the slider:

slider.setDecimalSeparator(',')    # Default: '.'
slider.setThousandsSeparator('.')  # Default: empty string

EXAMPLE:
The value 1052.17 formatted with , as the decimal separator and . as the thousands separator would be 1.052,17

• Changing how much the value is incremented or decremented on keyboard and mouse inputs:

# If left default, the single step and page step will be 1% and 5% of the slider's value range
slider.setSingleStep(10)  # Default: 0
slider.setPageStep(25)    # Default: 0

SINGLE STEP: Increment or decrement of the value when the slider is scrolled or the arrow keys are pressed
PAGE STEP: Increment or decrement of the value when the PageUp or PageDown key is pressed

• Hiding the value on the slider completely:

slider.showValue(False)  # Default: True

• Enabling or disabling keyboard and mouse wheel input:

slider.setKeyboardInputEnabled(False)    # Default: True
slider.setMouseWheelInputEnabled(False)  # Default: True

• Setting custom colors:

slider.setTextColor(QColor('#0F0F0F'))                # Default: #000000
slider.setBackgroundColor(QColor('#FFFFFF'))          # Default: #D6D6D6
slider.setAccentColor(QColor.fromRgb(100, 100, 100))  # Default: #0078D7
slider.setBorderColor(QColor.fromRgb(0, 0, 0))        # Default: #D1CFD3

• Making the corners rounded:

slider.setBorderRadius(3)  # Default: 0

• Setting a custom font:

# Init font
font = QFont()
font.setFamily('Times')
font.setPointSize(10)
font.setBold(True)

# Set font
slider.setFont(font)

Examples for PyQt5, PyQt6, and PySide6 can be found in the examples folder.

Tests

Installing the required test dependencies pytest, pytest-qt, coveragepy, and PyQt6:

pip install pytest pytest-qt coverage PyQt6

To run the tests with coverage, clone this repository, go into the main directory and run:

coverage run -m pytest
coverage report --ignore-errors -m

License

This software is licensed under the MIT license.