PyQt/Demo/CustomProperties.py

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#!/usr/bin/env python
# -*- coding: utf-8 -*-
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"""
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Created on 2017年4月12日
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@author: Irony
@site: https://pyqt.site , https://github.com/PyQt5
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@email: 892768447@qq.com
@file: 自定义属性测试
@description:
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"""
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from random import randint
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try:
from PyQt5.QtCore import pyqtProperty, pyqtSignal
from PyQt5.QtWidgets import QPushButton, QApplication
except ImportError:
from PySide2.QtCore import Property as pyqtProperty, Signal as pyqtSignal
from PySide2.QtWidgets import QPushButton, QApplication
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class Window(QPushButton):
bgChanged = pyqtSignal(str, str)
def __init__(self):
super(Window, self).__init__("QSS")
self._textColor = ""
self._backgroundColor = ""
self.clicked.connect(self.onClick)
self.bgChanged.connect(lambda old, new: print(
"old bg color", old, "new bg color", new))
def onClick(self):
print("textColor", self._textColor)
self.setStyleSheet("qproperty-backgroundColor: %s;" % randint(1, 1000))
# 方式一、个人觉得比较简洁
@pyqtProperty(str, notify=bgChanged)
def backgroundColor(self):
return self._backgroundColor
@backgroundColor.setter
def backgroundColor(self, color):
self.bgChanged.emit(self._backgroundColor, color)
self._backgroundColor = color
# 方式二
def getTextColor(self):
return self._textColor
def setTextColor(self, c):
self._textColor = c
textColor = pyqtProperty(str, getTextColor, setTextColor)
if __name__ == "__main__":
import sys
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app = QApplication(sys.argv)
w = Window()
w.setStyleSheet(
"qproperty-textColor: white;qproperty-backgroundColor: red;")
w.show()
sys.exit(app.exec_())