demo.py

# coding:utf-8
import sys

from PyQt5.QtCore import QRect, QSize, Qt
from PyQt5.QtGui import QColor, QPixmap, QIcon
from PyQt5.QtWidgets import QApplication, QLabel

from qframelesswindow import FramelessWindow, StandardTitleBar


class CustomTitleBar(StandardTitleBar):
    """ Custom title bar """

    def __init__(self, parent):
        super().__init__(parent)

        # customize the style of title bar button
        self.minBtn.setHoverColor(Qt.white)
        self.minBtn.setHoverBackgroundColor(QColor(0, 100, 182))
        self.minBtn.setPressedColor(Qt.white)
        self.minBtn.setPressedBackgroundColor(QColor(54, 57, 65))

        # use qss to customize title bar button
        self.maxBtn.setStyleSheet("""
            TitleBarButton {
                qproperty-hoverColor: white;
                qproperty-hoverBackgroundColor: rgb(0, 100, 182);
                qproperty-pressedColor: white;
                qproperty-pressedBackgroundColor: rgb(54, 57, 65);
            }
        """)


class Window(FramelessWindow):

    def __init__(self, parent=None):
        super().__init__(parent=parent)
        # change the default title bar if you like
        self.setTitleBar(CustomTitleBar(self))

        self.label = QLabel(self)
        self.label.setScaledContents(True)
        self.label.setPixmap(QPixmap("screenshot/shoko.png"))

        self.setWindowIcon(QIcon("screenshot/logo.png"))
        self.setWindowTitle("PyQt-Frameless-Window")
        self.setStyleSheet("background:white")

        self.titleBar.raise_()

        # customize the area of system title bar button, only works for macOS
        if sys.platform == "darwin":
            self.setSystemTitleBarButtonVisible(True)
            self.titleBar.minBtn.hide()
            self.titleBar.maxBtn.hide()
            self.titleBar.closeBtn.hide()

    def resizeEvent(self, e):
        # don't forget to call the resizeEvent() of super class
        super().resizeEvent(e)
        length = min(self.width(), self.height())
        self.label.resize(length, length)
        self.label.move(
            self.width() // 2 - length // 2,
            self.height() // 2 - length // 2
        )

    def systemTitleBarRect(self, size: QSize) -> QRect:
        """ Returns the system title bar rect, only works for macOS

        Parameters
        ----------
        size: QSize
            original system title bar rect
        """
        return QRect(size.width() - 75, 0, 75, size.height())


if __name__ == "__main__":
    # enable dpi scale
    QApplication.setHighDpiScaleFactorRoundingPolicy(
        Qt.HighDpiScaleFactorRoundingPolicy.PassThrough)
    QApplication.setAttribute(Qt.AA_EnableHighDpiScaling)
    QApplication.setAttribute(Qt.AA_UseHighDpiPixmaps)

    # run app
    app = QApplication(sys.argv)
    demo = Window()
    demo.show()
    sys.exit(app.exec_())