A comprehensive demonstration of applying various graphical effects to widgets in PyQt5.

pyqt5_graphical_effects_demo.py

from PyQt5 import QtCore, QtGui, QtWidgets

class EffectsDemo(QtWidgets.QWidget):
    def __init__(self):
        super().__init__()
        self.initUI()

    def initUI(self):
        self.setGeometry(300, 300, 240, 200)
        self.setWindowTitle('PyQt5 Button Graphics Effects Demo')

        # Layout
        layout = QtWidgets.QVBoxLayout()
        self.setLayout(layout)

        # Blur Effect Button
        blurButton = QtWidgets.QPushButton("Blur Effect")
        blurEffect = QtWidgets.QGraphicsBlurEffect()
        blurEffect.setBlurRadius(5)
        blurButton.setGraphicsEffect(blurEffect)
        layout.addWidget(blurButton)

        # Drop Shadow Effect Button
        shadowButton = QtWidgets.QPushButton("Shadow Effect")
        shadowEffect = QtWidgets.QGraphicsDropShadowEffect()
        shadowEffect.setBlurRadius(10)
        shadowEffect.setColor(QtGui.QColor('black'))
        shadowEffect.setOffset(5, 5)
        shadowButton.setGraphicsEffect(shadowEffect)
        layout.addWidget(shadowButton)

        # Colorize Effect Button
        colorizeButton = QtWidgets.QPushButton("Colorize Effect")
        colorizeEffect = QtWidgets.QGraphicsColorizeEffect()
        colorizeEffect.setColor(QtGui.QColor('red'))
        colorizeButton.setGraphicsEffect(colorizeEffect)
        layout.addWidget(colorizeButton)

        # Opacity Effect Button
        opacityButton = QtWidgets.QPushButton("Opacity Effect")
        opacityEffect = QtWidgets.QGraphicsOpacityEffect()
        opacityEffect.setOpacity(0.5)  # 50% opacity
        opacityButton.setGraphicsEffect(opacityEffect)
        layout.addWidget(opacityButton)

def main():
    app = QtWidgets.QApplication([])
    demo = EffectsDemo()
    demo.show()
    app.exec_()

if __name__ == '__main__':
    main()