效果展示

代码展示

from PyQt5.QtCore import Qt, pyqtSignal, QTimer, QRectF, QRect
from PyQt5.QtGui import QFont, QColor, QPainter, QPainterPath
from PyQt5.QtWidgets import QWidget


class SwitchBtn(QWidget):
    clicked = pyqtSignal(bool)

    # 组件常量
    BORDER_WIDTH = 4
    COLOR_BORDER = (209, 207, 198)
    COLOR_SLIDER = (255, 255, 255)
    COLOR_TEXT = (255, 255, 255)
    COLOR_CLOSE = (112, 112, 112)
    COLOR_OPEN = (0, 77, 191)
    COLOR_ALPHA = 150  # 透明度（禁用时）
    SPEED = 0.008  # 每次移动整体宽度的 0.8%(单位时间根据定时器，默认1ms)

    TEXT_ON = 'ON'
    TEXT_OFF = 'OFF'
    FONT_FAMILY = '微软雅黑'
    FONT_SIZE = 9

    def __init__(self, parent=None):
        super().__init__(parent)
        # 开关状态，默认关闭
        self.__checked = False
        self.__enabled = True
        # 移动步值
        self.__step = self.width() * self.SPEED
        # 起始点
        self.__start = 0
        self.__end = 0
        # 颜色
        self.__color_border = QColor(*self.COLOR_BORDER)
        self.__color_slider = QColor(*self.COLOR_SLIDER)
        self.__color_back = QColor(*self.COLOR_CLOSE)
        self.__color_text = QColor(*self.COLOR_TEXT)
        # 滑块
        self.__timer_slider = QTimer()
        self.__timer_slider.setInterval(1)
        self.__timer_slider.timeout.connect(self.__to_slider)
        # 字体
        self.__font = QFont()
        self.__font.setFamily(self