更新样式表而不丢失原始样式
更新样式表而不丢失原始样式
提问于 2018-05-30 06:24:14
我正在创建具有特定样式的later按钮，然后更新样式表，以便稍后对它们进行着色。但是，当我这样做时，它会覆盖原来的样式。有没有一种方法可以更新或附加到对象的样式表，而不会丢失或重新定义所有内容？
import sys
from PyQt5 import QtCore, QtWidgets
from PyQt5.QtWidgets import QMainWindow, QLabel, QGridLayout,QPushButton, QMenu, QApplication, QWidget, QInputDialog, QLineEdit
from PyQt5.QtCore import QSize, QCoreApplication, Qt, QLine, QPoint
from PyQt5.QtGui import QPainter, QPen, QFont,QPainter, QPainterPath, QPixmap
class MainWindow(QMainWindow):
def __init__(self):
QMainWindow.__init__(self)
self.setMinimumSize(QSize(400, 400))
color = QPushButton('color', self)
color.clicked.connect(self.color)
color.resize(100,115)
color.move(0, 100)
buttons= ['button1','button2','button3']
self.pybutton = {}
x=0
t = 0
for i in buttons:
t = t + 100
x+=1
self.pybutton[str(x)] = QPushButton(i, self)
self.pybutton[str(x)].setObjectName('btn' + str(x))
self.pybutton[str(x)].resize(100,100)
self.pybutton[str(x)].move(400-int(t),100)
self.pybutton[str(x)].setStyleSheet('QPushButton {max-width: 75px;text-align:center;padding-left: 20px; max-height: 60px; font-size: 20px;}')
self.statusBar()
def status(self):
sender = self.sender()
print('PyQt5 button click')
self.statusBar().showMessage(sender.text() + ' was pressed')
def color(self):
for i in self.pybutton:
self.pybutton[str(i)].objectName()
if self.pybutton[str(i)].objectName() == 'btn1':
self.pybutton[str(i)].setStyleSheet("background-color: green")
else:
self.pybutton[str(i)].setStyleSheet("background-color: red")
if __name__ == "__main__":
app = QtWidgets.QApplication(sys.argv)
mainWin = MainWindow()
mainWin.show()
sys.exit( app.exec_() )回答 1
Stack Overflow用户
发布于 2018-05-30 07:19:25
一种可能的解决方案是使用styleSheet()方法设置样式表，然后分析文本并根据需要对其进行修改，但这可能非常困难。另一个更好的解决方案是使用QSS Property Selector并通过修改属性来选择颜色：
import sys
from PyQt5.QtWidgets import QMainWindow,QPushButton, QApplication
from PyQt5.QtCore import QSize
class MainWindow(QMainWindow):
def __init__(self):
QMainWindow.__init__(self)
self.setMinimumSize(QSize(400, 400))
color = QPushButton('color', self)
color.clicked.connect(self.color)
color.resize(100,115)
color.move(0, 100)
buttons= ['button1','button2','button3']
self.pybutton = {}
qss = """
QPushButton{
max-width: 75px;
text-align:center;
padding-left: 20px;
max-height: 60px;
font-size: 20px;
}
QPushButton[color = "0"]{
background-color: green;
}
QPushButton[color = "1"]{
background-color: red;
}
"""
for i, text in enumerate(buttons):
btn = QPushButton(text, self)
btn.setObjectName('btn{}'.format(i))
btn.setGeometry(300-i*100, 100, 100,100)
btn.setStyleSheet(qss)
self.pybutton[str(i)] = btn
def color(self):
for i, btn in self.pybutton.items():
if btn.objectName() == 'btn1':
btn.setProperty("color", "0")
else:
btn.setProperty("color", "1")
btn.style().polish(btn)
if __name__ == "__main__":
app = QApplication(sys.argv)
mainWin = MainWindow()
mainWin.show()
sys.exit( app.exec_() )页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/50593841
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