按钮双击事件

# -*- coding: utf-8 -*-
from PySide2 import QtCore
from PySide2 import QtWidgets
import sys


class DoublePushButton(QtWidgets.QPushButton):
    def __init__(self, msec=300, *args, **kwargs):
        super(DoublePushButton, self).__init__(*args, **kwargs)
        self.button = None
        self.clickedTimer = QtCore.QTimer()  # 创建计时器
        self.clickedTimer.setInterval(msec)  # 延迟时间
        self.clickedTimer.timeout.connect(self.mouseClick)  # 连接到单点函数

    def mouseClick(self):
        """单击函数"""
        if self.isDown():  # 按下状态返回
            return
        self.clickedTimer.stop()  # 停止计时器
        # ↓执行
        if self.button == QtCore.Qt.LeftButton:
            print("1左")
        elif self.button == QtCore.Qt.MidButton:
            print("1中")
        elif self.button == QtCore.Qt.RightButton:
            print("1右")

    def mouseDoubleClick(self):
        """双击函数"""
        if self.button == QtCore.Qt.LeftButton:
            print("2左")
        elif self.button == QtCore.Qt.MidButton:
            print("2中")
        elif self.button == QtCore.Qt.RightButton:
            print("2右")
            
    def mousePressEvent(self, event):  # 复写一下事件，不然它只会反应左键点击
        if self.hitButton(event.pos()):
            self.setDown(True)
            self.repaint()
            event.accept()
        else:
            event.ignore()
            
    def mouseReleaseEvent(self, event):
        """鼠标松开事件"""
        if not self.isDown():  # 鼠标按下时会执行setDown,这里判断按钮状态是否抬起
            event.ignore()  # 没有按下则忽略
            return
        self.setDown(False)  # 按下则抬起
        self.button = event.button()  # 记录按下的按键
        if self.hitButton(event.pos()):  # 在按钮内
            if self.clickedTimer.isActive():  # 计时器是否开启
                self.clickedTimer.stop()  # 结束计时器
                self.mouseDoubleClick()  # 执行双击命令
            else:
                self.clickedTimer.start()  # 开启计时器
            event.accept()  # 继续
        else:
            if self.clickedTimer.isActive():
                self.clickedTimer.stop()
            event.ignore()  # 不在按钮内则忽略


if __name__ == '__main__':
    app = QtWidgets.QApplication(sys.argv)
    win = DoublePushButton()
    win.show()
    sys.exit(app.exec_())