61 lines
1.6 KiB
Python
61 lines
1.6 KiB
Python
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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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"""
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Created on 2018年6月14日
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@author: Irony
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@site: https://pyqt.site , https://github.com/PyQt5
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@email: 892768447@qq.com
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@file: FadeInOut
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@description:
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"""
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from PyQt5.QtCore import QPropertyAnimation
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from PyQt5.QtWidgets import QApplication, QWidget, QVBoxLayout, QPushButton
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class Window(QWidget):
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def __init__(self, *args, **kwargs):
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super(Window, self).__init__(*args, **kwargs)
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self.resize(400, 400)
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layout = QVBoxLayout(self)
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layout.addWidget(QPushButton('退出', self, clicked=self.doClose))
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# 窗口透明度动画类
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self.animation = QPropertyAnimation(self, b'windowOpacity')
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self.animation.setDuration(1000) # 持续时间1秒
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# 执行淡入
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self.doShow()
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def doShow(self):
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try:
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# 尝试先取消动画完成后关闭窗口的信号
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self.animation.finished.disconnect(self.close)
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except:
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pass
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self.animation.stop()
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# 透明度范围从0逐渐增加到1
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self.animation.setStartValue(0)
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self.animation.setEndValue(1)
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self.animation.start()
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def doClose(self):
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self.animation.stop()
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self.animation.finished.connect(self.close) # 动画完成则关闭窗口
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# 透明度范围从1逐渐减少到0
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self.animation.setStartValue(1)
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self.animation.setEndValue(0)
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self.animation.start()
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if __name__ == '__main__':
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import sys
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app = QApplication(sys.argv)
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w = Window()
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w.show()
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sys.exit(app.exec_())
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