@pyqtProperty

自定义属性测试/自定义属性测试.py

@@ -9,31 +9,57 @@ Created on 2017年4月12日
 @file: 自定义属性测试
 @description: 
 '''
+from random import randint
+
+from PyQt5.QtCore import pyqtProperty, pyqtSignal
 from PyQt5.QtWidgets import QPushButton
-from PyQt5.QtCore import pyqtProperty
+
 
 __version__ = "0.0.1"
 
+
 class Window(QPushButton):
-    
+
+    bgChanged = pyqtSignal(str, str)
+
     def __init__(self):
         super(Window, self).__init__("QSS")
         self._textColor = ""
-        self.clicked.connect(lambda:print(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
     from PyQt5.QtWidgets import QApplication
     app = QApplication(sys.argv)
     w = Window()
-    w.setStyleSheet("qproperty-textColor: white;")
+    w.setStyleSheet(
+        "qproperty-textColor: white;qproperty-backgroundColor: red;")
     w.show()
     sys.exit(app.exec_())