PyQt5 中多个 QWidget 的样式表？

Question

如何在 PyQt5 中为多个 QLabels 或多个 Qwidgets 创建样式表？

例如，在我的程序中，我使用了 8 个 QLabel，其中 4 个 QLabel 属于一个家庭/组，另外 4 个属于另一个家庭/组。现在我想为这两个系列创建一个单独的样式表。第一个家族（所有 4 个 QLabels）必须设置相同的属性（背景色、前景色、对齐方式和字体），第二个家族也必须设置不同的属性。

import sys
from PyQt5.QtWidgets import QWidget,QApplication,QLabel,QFormLayout

class Stylesheet_001(QWidget):
    def __init__(self):
        super().__init__()
        self.setWindowTitle("Style Sheet Example_001")
        self.setMinimumSize(600,800)
        self.setMaximumSize(600,800)
        self.mydesign()

    def mydesign(self):
        lbl_normal   = QLabel("Total Available Items :")
        lbl_starts   = QLabel("Item Starts With :")
        lbl_contains = QLabel("Items Contains Anywhere :")
        lbl_end      = QLabel("Items Ends With :")

        lbl_normal_count   = QLabel("500")
        lbl_starts_count   = QLabel('50,000')
        lbl_contains_count = QLabel('5')
        lbl_ends_count     = QLabel('0')

        mylayout = QFormLayout()
        mylayout.addRow(lbl_normal  ,lbl_normal_count)
        mylayout.addRow(lbl_starts  ,lbl_starts_count)
        mylayout.addRow(lbl_contains,lbl_contains_count)
        mylayout.addRow(lbl_end     ,lbl_ends_count)

        self.setLayout(mylayout)

def main():
    myapp = QApplication(sys.argv)
    mywindow = Stylesheet_001()
    mywindow.show()
    sys.exit(myapp.exec_())

if __name__ == "__main__":
    main()

1) lbl_normal, 2) lbl_strats, 3) lbl_contains, 4) lbl_ends 属于一个组（第一组），另外 4 个标签属于另一组（第二组）。

第一组必须设置相同，前景色：红色，字体：口径，10，粗体和右对齐。 第二组必须设置相同，前景色：绿色，字体：系统默认和左对齐。

Answer 1

试试看：

import sys
from PyQt5.QtWidgets import QWidget, QApplication, QLabel, QFormLayout,\
    QFrame, QVBoxLayout
from PyQt5.QtCore import Qt


class Stylesheet_001(QWidget):
    def __init__(self):
        super().__init__()
        self.setWindowTitle("Style Sheet Example_001")
        self.setMinimumSize(600,800)
        self.setMaximumSize(600,800)
        self.mydesign()

    def mydesign(self):

        # Red, same font : Caliber, 10, Bold, and Alignment to Right 
        lbl_normal   = QLabel("Total Available Items :", alignment=Qt.AlignRight | Qt.AlignVCenter)
        lbl_normal.setMinimumWidth(180)
        lbl_starts   = QLabel("Item Starts With :", minimumWidth=180, alignment=Qt.AlignRight | Qt.AlignVCenter)
        lbl_contains = QLabel("Items Contains Anywhere :", minimumWidth=180, alignment=Qt.AlignRight | Qt.AlignVCenter)
        lbl_end      = QLabel("Items Ends With :", minimumWidth=180, alignment=Qt.AlignRight | Qt.AlignVCenter)

        lbl_normal_count   = QLabel("500")
        lbl_starts_count   = QLabel('50,000')
        lbl_contains_count = QLabel('5')
        lbl_ends_count     = QLabel('0')

        mylayout = QFormLayout(self) 
        mylayout.addRow(lbl_normal  , lbl_normal_count)
        mylayout.addRow(lbl_starts  , lbl_starts_count)
        mylayout.addRow(lbl_contains, lbl_contains_count)
        mylayout.addRow(lbl_end     , lbl_ends_count)


QSS = """
QWidget > QLabel[text="Total Available Items :"],
QWidget > QLabel[text="Item Starts With :"],
QWidget > QLabel[text="Items Contains Anywhere :"],
QWidget > QLabel[text="Items Ends With :"] {
    background-color: red; 
    color: white;
    font: bold 10pt \"Caliber\";
}
QWidget > QLabel {
    background-color: green; 
    color: yellow;
    font: 10pt \"Caliber\";
}
"""

def main():
    myapp = QApplication(sys.argv)
    myapp.setStyle('Fusion')
    myapp.setStyleSheet(QSS)
    mywindow = Stylesheet_001()
    mywindow.show()
    sys.exit(myapp.exec_())

if __name__ == "__main__":
    main()

Answer 2

试试看：

import sys
from PyQt5.QtWidgets import *
from PyQt5.QtGui import *
from PyQt5.QtCore import  *

class Stylesheet_001(QWidget):
    def __init__(self):
        super().__init__()
        self.setWindowTitle("Style Sheet Example_001")
        self.setMinimumSize(600,800)
       # self.setMaximumSize(600,800)
        self.mydesign()

    def mydesign(self):

        lbl_normal   = QLabel("Total Available Items :")
        lbl_starts   = QLabel("Item Starts With :")
        lbl_contains = QLabel("Items Contains Anywhere :")
        lbl_end      = QLabel("Items Ends With :")

        lbl_normal.setStyleSheet(self.stylesheet_family_1())
        lbl_starts.setStyleSheet(self.stylesheet_family_1())
        lbl_contains.setStyleSheet(self.stylesheet_family_1())
        lbl_end.setStyleSheet(self.stylesheet_family_1())

        lbl_normal_count   = QLabel("500")
        lbl_starts_count   = QLabel('50,000')
        lbl_contains_count = QLabel('5')
        lbl_ends_count     = QLabel('0')

        lbl_normal_count.setStyleSheet(self.stylesheet_family_2())
        lbl_starts_count.setStyleSheet(self.stylesheet_family_2())
        lbl_contains_count.setStyleSheet(self.stylesheet_family_2())
        lbl_ends_count.setStyleSheet(self.stylesheet_family_2())

        self.mylayout = QFormLayout()
        self.mylayout.setSpacing(0)
        self.mylayout.addRow(lbl_normal  ,lbl_normal_count)
        self.mylayout.addRow(lbl_starts  ,lbl_starts_count)
        self.mylayout.addRow(lbl_contains,lbl_contains_count)
        self.mylayout.addRow(lbl_end     ,lbl_ends_count)

        self.myframe    = QFrame()
        self.mainlayout = QVBoxLayout()
        self.myframe.setFixedSize(400,300)
        self.myframe.setLayout(self.mylayout)

        self.mainlayout.addWidget(self.myframe)
        self.mainlayout.addStretch()
        self.setLayout(self.mainlayout)

    def stylesheet_family_1(self):
        return"""
        QLabel{
        background-color:'red';
        font-family: Caliber;
        font-style: normal;
        font-size:10pt;
        font-weight:normal;
        border-width:1px;
        border-color:black;
        border-top-color:black;
        border-style:outset;
        color:white;
        padding:6px;
        min-width:220px;
        qproperty-alignment:'AlignRight';   
        }
        """
    def stylesheet_family_2(self):
        return"""
        QLabel{
        background-color:'green';
        font-family: Caliber;
        font-style: normal;
        font-size:10pt;
        font-weight:bold;
        border-width:1px;
        border-color:black;
        border-top-color:black;
        border-style:outset;
        color:white;
        padding:1px;
        min-width:20px;
        qproperty-alignment:'AlignCenter|AlignRight';   
        }
        """


def main():
    myapp = QApplication(sys.argv)
    mywindow = Stylesheet_001()
    mywindow.show()
    sys.exit(myapp.exec_())

if __name__ == "__main__":
    main()