Custom Button

from PySide2.QtWidgets import QWidget, QApplication
from PySide2.QtGui import QPainter, QBrush, QColor, QFont
from PySide2.QtCore import Signal, Qt
import sys

class CustomButton(QWidget):
    mouseClicked = Signal()

    def __init__(self):
        super(CustomButton, self).__init__()
        self.highlight = False
        self.pressed = False

    def mousePressEvent(self, event):
        print("Mouse clicked!")
        self.pressed = True
        self.mouseClicked.emit()

        self.repaint()

    def mouseReleaseEvent(self, event):
        self.pressed = False
        self.repaint()

    def paintEvent(self, event):
        painter = QPainter()
        painter.begin(self)

        self.drawWidget(painter)

        painter.end()

    def enterEvent(self, event):
        self.highlight = True
        QApplication.setOverrideCursor(Qt.PointingHandCursor)

        self.repaint()

    def leaveEvent(self, event):
        self.highlight = False
        QApplication.restoreOverrideCursor()

        self.repaint()

    def drawWidget(self, painter):
        rect = self.rect()

        painter.setBrush(QBrush(QColor("green")))
        if self.highlight:
            painter.setBrush(QBrush(QColor("red")))

        if self.pressed:
            painter.setBrush(QBrush(QColor("lightBlue")))

        painter.drawRect(rect)

        # create a custom pen with 5 pixel width and blue color
        font = QFont()
        font.setPointSize(30)
        font.setFamily("consolas")
        painter.setPen(QColor("blue"))
        painter.setFont(font)

        painter.drawText(rect, Qt.AlignHCenter | Qt.AlignVCenter, "Hello World!")


app = QApplication(sys.argv)
win = CustomButton()
win.show()
app.exec_()