PySide6 GUI 编程（15）：构造可变色的QWidget

import random

from PySide6.QtCore import Qt, QTimer
from PySide6.QtGui import QColor, QPalette
from PySide6.QtWidgets import QApplication, QLabel, QMainWindow, QVBoxLayout, QWidget

# 构造一个可以设置颜色的 Color Widget
class ColorWidget(QWidget):
    def __init__(self, color: QColor):
        super().__init__()
        self.setAutoFillBackground(True)
        palette = self.palette()
        palette.setColor(QPalette.ColorGroup.Normal, QPalette.ColorRole.Window, color)
        self.setPalette(palette)

    def reset_color(self, color: QColor):
        palette = self.palette()
        palette.setColor(QPalette.ColorGroup.Normal, QPalette.ColorRole.Window, color)
        self.setPalette(palette)
        print('reset to color:', color.name(QColor.NameFormat.HexRgb))


if __name__ == '__main__':
    class test_window(QMainWindow):
        def __init__(self):
            super().__init__()
            color = QColor(QColor.colorNames()[0])
            self.window = ColorWidget(color)
            self.label = QLabel()
            self.label.setAlignment(Qt.AlignmentFlag.AlignVCenter | Qt.AlignmentFlag.AlignHCenter)
            self.label.setText('color name:{}({})'.format(QColor.colorNames()[0], color.name(QColor.NameFormat.HexRgb)))

            self.layout = QVBoxLayout()
            self.layout.addWidget(self.label)
            self.layout.addWidget(self.window)

            self.container = QWidget()
            self.container.setLayout(self.layout)

            self.setCentralWidget(self.container)

            # 基于定时器，让它每一秒出发一次变色动作
            self.color_timer = QTimer()
            self.color_timer.timeout.connect(self.color_change)
            self.color_timer.setInterval(1000)
            self.color_timer.start()

        def color_change(self):
            color_name = random.choice(QColor.colorNames())
            color = QColor(color_name)
            self.label.setText('color name:{}({})'.format(color_name, color.name(QColor.NameFormat.HexRgb)))
            self.window.reset_color(color)


    app = QApplication()
    ins = test_window()
    ins.show()
    app.exec()