emv_upper/ui/own/switch_button.py

#!/usr/bin/env python
# -*- encoding: utf-8 -*-
'''
@文件    :switch_button.py
@时间    :2022/01/22 10:05:50
@作者    :None
@版本    :1.0
@说明    :连接开关
'''


from utils.qt import QWidget, Signal, Qt, QRect, QPainter, QFont, QColor, QBrush, QPen


class SwitchButton(QWidget):

    """自定义Switch按钮"""
    # 信号
    checkedChanged = Signal(bool)

    def __init__(self, parent=None):
        super(SwitchButton, self).__init__(parent)

        # 设置无边框和背景透明
        self.setWindowFlags(self.windowFlags() | Qt.FramelessWindowHint)
        self.setAttribute(Qt.WA_TranslucentBackground)

        self.resize(70, 30)
        self.state = False  # 按钮状态：True表示开，False表示关

    def mousePressEvent(self, event):
        """鼠标点击事件：用于切换按钮状态"""
        super(SwitchButton, self).mousePressEvent(event)

        # self.state = False if self.state else True
        self.state = not self.state
        # 发射信号
        self.checkedChanged.emit(self.state)

        self.update()

    def paintEvent(self, event):
        """绘制按钮"""
        super(SwitchButton, self).paintEvent(event)

        # 创建绘制器并设置抗锯齿和图片流畅转换
        painter = QPainter(self)
        painter.setRenderHints(QPainter.Antialiasing | QPainter.SmoothPixmapTransform)

        # 定义字体样式
        font = QFont('Microsoft YaHei')
        font.setPixelSize(14)
        painter.setFont(font)

        # 开关为开的状态
        if self.state:
            # 绘制背景
            painter.setPen(Qt.NoPen)
            # brush = QBrush(QColor('#969696'))
            brush = QBrush(QColor('#006400'))
            painter.setBrush(brush)
            painter.drawRoundedRect(0, 0, self.width(), self.height(), self.height() // 2, self.height() // 2)

            # 绘制圆圈
            painter.setPen(Qt.NoPen)
            brush.setColor(QColor('#ffffff'))
            painter.setBrush(brush)
            painter.drawRoundedRect(43, 3, 24, 24, 12, 12)

            # 绘制文本
            painter.setPen(QPen(QColor('#ffffff')))
            painter.setBrush(Qt.NoBrush)
            painter.drawText(QRect(18, 4, 50, 20), Qt.AlignLeft, '开')
        # 开关为关的状态
        else:
            # 绘制背景
            painter.setPen(Qt.NoPen)
            brush = QBrush(QColor('#FFFFFF'))
            painter.setBrush(brush)
            painter.drawRoundedRect(0, 0, self.width(), self.height(), self.height() // 2, self.height() // 2)

            # 绘制圆圈
            pen = QPen(QColor('#999999'))
            pen.setWidth(1)
            painter.setPen(pen)
            painter.drawRoundedRect(3, 3, 24, 24, 12, 12)

            # 绘制文本
            painter.setBrush(Qt.NoBrush)
            painter.drawText(QRect(38, 4, 50, 20), Qt.AlignLeft, '关')