用PyQt5实现一个渐隐动画的消息弹窗

叁歲伎倆 2023-02-23 08:17 305阅读 0赞

实现效果如下：

![无法显示图片][20200706131944215.gif]

关键代码:

self.setWindowOpacity(opacity)  # 设置窗口透明度,值为0-1之间，1为完全不透明

全部代码:

# -*-  coding: utf-8 -*-
    
    @author： daimashiren
    @time:    2020/07/06
    from time import sleep
    from PyQt5.QtCore import  Qt,QRect,QPoint,QTimer
    from PyQt5.QtWidgets import QDialog,QLabel,QApplication,QHBoxLayout,QDesktopWidget
    
    
    class Msg(QDialog):
        def __init__(self):
            super(Msg, self).__init__()
            self.ini_ui()
    
    
        def ini_ui(self):
            self.setWindowModality(Qt.NonModal)
            self.setWindowOpacity(0.8)  # 设置窗口透明度
            self.setStyleSheet("""
                    QDialog{
                    border: none;
                    background:rgb(150,150,150,100);}
                    """)
            self.setWindowFlags(Qt.FramelessWindowHint | Qt.WindowStaysOnTopHint | Qt.Tool)
            win_center = QDesktopWidget().availableGeometry().center()
            geo = QRect(win_center.x() + 50, win_center.y() - 75, 300, 100)
            self.setGeometry(geo)
            self.setContentsMargins(0, 0, 0, 0)
            main_layout = QHBoxLayout()
            self.setLayout(main_layout)
            main_layout.setAlignment(Qt.AlignVCenter|Qt.AlignHCenter)
            self.msg_label = QLabel()
            self.msg_label.setStyleSheet("""
            QLabel{
                color:#7fccde;
                text-align:left;
                border:none;
                border-image:none;
                font-size:25px;
                font-weight:300;
                font-family: "黑体","Arial","Microsoft YaHei","宋体",sans-serif;
            }
            """)
            main_layout.addWidget(self.msg_label)
    
            self.fade_timer = QTimer()
            self.fade_timer.setInterval(2000)
            self.fade_timer.timeout.connect(self.faded_out)
    
        # (中心展示)只能在show方法后调用
        def center_show(self, offset):
            geo = self.frameGeometry()
            cp = QDesktopWidget().availableGeometry().center()  # 获取显示器分辨率，并找到中间点
            if offset:
                print("窗口偏置")
                geo.moveCenter(cp + offset)  # 将窗口中点偏置
            else:
                geo.moveCenter(cp)  # 将窗口中点放在屏幕中间
            self.move(geo.topLeft())
    
        def show_msg(self,text):
            self.fade_timer.start()
            self.msg_label.setText(text)
            self.msg_label.repaint()
            self.raise_()
            self.show()
            self.center_show(QPoint(75,0))
            self.exec_()  # 动画弹出
            sleep(0.5)
    
    
    
        def faded_out(self):
            print("窗口渐隐")
            for i in range(80,0,-1):
                opacity = i/100
                print("opacity:",opacity)
                self.setWindowOpacity(opacity)  # 设置窗口透明度
                self.repaint()
                QApplication.processEvents()
                sleep(0.05)
    
            self.fade_timer.stop()
            self.close()
    
    
    if __name__ == "__main__":
        import sys
        app = QApplication(sys.argv)
        msg = Msg()
        msg.show_msg("测试信息...")
        sys.exit(app.exec_())

[20200706131944215.gif]: /images/20230209/31e5754cc422401893910fd69cf3181d.png