PyQt/动画/窗口淡入淡出.py

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2018-06-14 23:20:57 +08:00
#!/usr/bin/env python
# -*- coding: utf-8 -*-
from PyQt5.QtCore import QPropertyAnimation
from PyQt5.QtWidgets import QWidget, QVBoxLayout, QPushButton
# Created on 2018年6月14日
# author: Irony
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# site: https://pyqt5.com, https://github.com/892768447
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# email: 892768447@qq.com
# file: 动画特效.淡入淡出
# description:
__Author__ = """By: Irony
QQ: 892768447
Email: 892768447@qq.com"""
__Copyright__ = 'Copyright (c) 2018 Irony'
__Version__ = 1.0
class Window(QWidget):
def __init__(self, *args, **kwargs):
super(Window, self).__init__(*args, **kwargs)
self.resize(400, 400)
layout = QVBoxLayout(self)
layout.addWidget(QPushButton('退出', self, clicked=self.doClose))
# 窗口透明度动画类
self.animation = QPropertyAnimation(self, b'windowOpacity')
self.animation.setDuration(1000) # 持续时间1秒
# 执行淡入
self.doShow()
def doShow(self):
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)
except:
pass
self.animation.stop()
# 透明度范围从0逐渐增加到1
self.animation.setStartValue(0)
self.animation.setEndValue(1)
self.animation.start()
def doClose(self):
self.animation.stop()
self.animation.finished.connect(self.close) # 动画完成则关闭窗口
# 透明度范围从1逐渐减少到0
self.animation.setStartValue(1)
self.animation.setEndValue(0)
self.animation.start()
if __name__ == '__main__':
import sys
from PyQt5.QtWidgets import QApplication
app = QApplication(sys.argv)
w = Window()
w.show()
sys.exit(app.exec_())