在 pyqt5 QTableWidget 中应用样式：已选择

Posted 2023-03-30

【中文标题】在 pyqt5 QTableWidget 中应用样式：已选择

【英文标题】：Apply style in pyqt5 QTableWidget:selected

【发布时间】：2021-10-06 21:28:35

【问题描述】：

我有这个简单的应用程序：

文件：untitled.py

# -*- coding: utf-8 -*-

# Form implementation generated from reading ui file 'untitled.ui'
#
# Created by: PyQt5 UI code generator 5.15.4
#
# WARNING: Any manual changes made to this file will be lost when pyuic5 is
# run again.  Do not edit this file unless you know what you are doing.


from PyQt5 import QtCore, QtGui, QtWidgets


class Ui_Dialog(object):
    def setupUi(self, Dialog):
        Dialog.setObjectName("Dialog")
        Dialog.resize(1160, 574)
        self.gridLayout = QtWidgets.QGridLayout(Dialog)
        self.gridLayout.setObjectName("gridLayout")
        self.player_list_table = QtWidgets.QTableWidget(Dialog)
        self.player_list_table.setMinimumSize(QtCore.QSize(0, 850))
        palette = QtGui.QPalette()
        brush = QtGui.QBrush(QtGui.QColor(255, 255, 255))
        brush.setStyle(QtCore.Qt.SolidPattern)
        palette.setBrush(QtGui.QPalette.Active, QtGui.QPalette.Button, brush)
        brush = QtGui.QBrush(QtGui.QColor(255, 255, 255))
        brush.setStyle(QtCore.Qt.SolidPattern)
        palette.setBrush(QtGui.QPalette.Active, QtGui.QPalette.Base, brush)
        brush = QtGui.QBrush(QtGui.QColor(255, 255, 255))
        brush.setStyle(QtCore.Qt.SolidPattern)
        palette.setBrush(QtGui.QPalette.Active, QtGui.QPalette.Window, brush)
        brush = QtGui.QBrush(QtGui.QColor(0, 120, 215))
        brush.setStyle(QtCore.Qt.SolidPattern)
        palette.setBrush(QtGui.QPalette.Active, QtGui.QPalette.Highlight, brush)
        brush = QtGui.QBrush(QtGui.QColor(255, 255, 255))
        brush.setStyle(QtCore.Qt.SolidPattern)
        palette.setBrush(QtGui.QPalette.Active, QtGui.QPalette.HighlightedText, brush)
        brush = QtGui.QBrush(QtGui.QColor(170, 255, 0))
        brush.setStyle(QtCore.Qt.SolidPattern)
        palette.setBrush(QtGui.QPalette.Active, QtGui.QPalette.AlternateBase, brush)
        brush = QtGui.QBrush(QtGui.QColor(255, 255, 255))
        brush.setStyle(QtCore.Qt.SolidPattern)
        palette.setBrush(QtGui.QPalette.Inactive, QtGui.QPalette.Button, brush)
        brush = QtGui.QBrush(QtGui.QColor(255, 255, 255))
        brush.setStyle(QtCore.Qt.SolidPattern)
        palette.setBrush(QtGui.QPalette.Inactive, QtGui.QPalette.Base, brush)
        brush = QtGui.QBrush(QtGui.QColor(255, 255, 255))
        brush.setStyle(QtCore.Qt.SolidPattern)
        palette.setBrush(QtGui.QPalette.Inactive, QtGui.QPalette.Window, brush)
        brush = QtGui.QBrush(QtGui.QColor(0, 120, 215))
        brush.setStyle(QtCore.Qt.SolidPattern)
        palette.setBrush(QtGui.QPalette.Inactive, QtGui.QPalette.Highlight, brush)
        brush = QtGui.QBrush(QtGui.QColor(255, 255, 255))
        brush.setStyle(QtCore.Qt.SolidPattern)
        palette.setBrush(QtGui.QPalette.Inactive, QtGui.QPalette.HighlightedText, brush)
        brush = QtGui.QBrush(QtGui.QColor(170, 255, 0))
        brush.setStyle(QtCore.Qt.SolidPattern)
        palette.setBrush(QtGui.QPalette.Inactive, QtGui.QPalette.AlternateBase, brush)
        brush = QtGui.QBrush(QtGui.QColor(255, 255, 255))
        brush.setStyle(QtCore.Qt.SolidPattern)
        palette.setBrush(QtGui.QPalette.Disabled, QtGui.QPalette.Button, brush)
        brush = QtGui.QBrush(QtGui.QColor(255, 255, 255))
        brush.setStyle(QtCore.Qt.SolidPattern)
        palette.setBrush(QtGui.QPalette.Disabled, QtGui.QPalette.Base, brush)
        brush = QtGui.QBrush(QtGui.QColor(255, 255, 255))
        brush.setStyle(QtCore.Qt.SolidPattern)
        palette.setBrush(QtGui.QPalette.Disabled, QtGui.QPalette.Window, brush)
        brush = QtGui.QBrush(QtGui.QColor(0, 120, 215))
        brush.setStyle(QtCore.Qt.SolidPattern)
        palette.setBrush(QtGui.QPalette.Disabled, QtGui.QPalette.Highlight, brush)
        brush = QtGui.QBrush(QtGui.QColor(255, 255, 255))
        brush.setStyle(QtCore.Qt.SolidPattern)
        palette.setBrush(QtGui.QPalette.Disabled, QtGui.QPalette.HighlightedText, brush)
        brush = QtGui.QBrush(QtGui.QColor(170, 255, 0))
        brush.setStyle(QtCore.Qt.SolidPattern)
        palette.setBrush(QtGui.QPalette.Disabled, QtGui.QPalette.AlternateBase, brush)
        self.player_list_table.setPalette(palette)
        self.player_list_table.setFocusPolicy(QtCore.Qt.NoFocus)
        self.player_list_table.setEditTriggers(QtWidgets.QAbstractItemView.NoEditTriggers)
        self.player_list_table.setAlternatingRowColors(True)
        self.player_list_table.setSelectionMode(QtWidgets.QAbstractItemView.SingleSelection)
        self.player_list_table.setSelectionBehavior(QtWidgets.QAbstractItemView.SelectRows)
        self.player_list_table.setRowCount(20)
        self.player_list_table.setObjectName("player_list_table")
        self.player_list_table.setColumnCount(2)
        item = QtWidgets.QTableWidgetItem()
        self.player_list_table.setHorizontalHeaderItem(0, item)
        item = QtWidgets.QTableWidgetItem()
        self.player_list_table.setHorizontalHeaderItem(1, item)
        self.player_list_table.horizontalHeader().setCascadingSectionResizes(False)
        self.player_list_table.horizontalHeader().setHighlightSections(False)
        self.player_list_table.horizontalHeader().setMinimumSectionSize(260)
        self.player_list_table.horizontalHeader().setSortIndicatorShown(False)
        self.player_list_table.horizontalHeader().setStretchLastSection(True)
        self.player_list_table.verticalHeader().setHighlightSections(False)
        self.gridLayout.addWidget(self.player_list_table, 0, 0, 1, 1)

        self.retranslateUi(Dialog)
        QtCore.QMetaObject.connectSlotsByName(Dialog)

    def retranslateUi(self, Dialog):
        _translate = QtCore.QCoreApplication.translate
        Dialog.setWindowTitle(_translate("Dialog", "Dialog"))
        self.player_list_table.setSortingEnabled(False)
        item = self.player_list_table.horizontalHeaderItem(0)
        item.setText(_translate("Dialog", "Αλλαγή θέσης"))
        item = self.player_list_table.horizontalHeaderItem(1)
        item.setText(_translate("Dialog", "Θέση αρχείου"))


if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    Dialog = QtWidgets.QDialog()
    ui = Ui_Dialog()
    ui.setupUi(Dialog)
    Dialog.show()
    sys.exit(app.exec_())

文件：main.py

from PyQt5 import QtCore, QtGui, QtWidgets
import sys
from untitled import Ui_Dialog

class Main:
    
    def __init__(self):
        app = QtWidgets.QApplication(sys.argv)
        Dialog = QtWidgets.QDialog()
        ui = Ui_Dialog()
        ui.setupUi(Dialog)
        Dialog.show()
        
        ui.player_list_table.setRowCount(0)
        for i in range(0,20):
            ui.player_list_table.insertRow(i)
            
            #Title
            title_item = QtWidgets.QTableWidgetItem("Title text")
            title_item.setTextAlignment(QtCore.Qt.AlignHCenter | QtCore.Qt.AlignVCenter | QtCore.Qt.Alignment(QtCore.Qt.TextWordWrap))
            ui.player_list_table.setItem(i,0,title_item)
            
            #Image
            image_frame = QtWidgets.QFrame()
            image_frame.setStyleSheet("QFrame\nborder:none;background:transparent;\n")
            gridLayout = QtWidgets.QGridLayout(image_frame)
            image_title = QtWidgets.QLabel(image_frame)
            sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Expanding)
            sizePolicy.setHorizontalStretch(0)
            sizePolicy.setVerticalStretch(0)
            sizePolicy.setHeightForWidth(image_title.sizePolicy().hasHeightForWidth())
            image_title.setSizePolicy(sizePolicy)
            image_title.setAlignment(QtCore.Qt.AlignCenter)
            image_title.setWordWrap(True)
            image_title.setStyleSheet("QLabel\nborder:none;background:transparent;\n")
            gridLayout.addWidget(image_title, 1, 0, 1, 3)
            image = QtWidgets.QLabel(image_frame)
            sizePolicy = QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Expanding)
            sizePolicy.setHorizontalStretch(0)
            sizePolicy.setVerticalStretch(0)
            sizePolicy.setHeightForWidth(image.sizePolicy().hasHeightForWidth())
            image.setSizePolicy(sizePolicy)
            image.setMinimumSize(QtCore.QSize(150, 150))
            image.setMaximumSize(QtCore.QSize(150, 150))
            image.setText("")
            image.setScaledContents(True)
            gridLayout.addWidget(image, 0, 1, 1, 1)
            spacerItem = QtWidgets.QSpacerItem(40, 20, QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Minimum)
            gridLayout.addItem(spacerItem, 0, 2, 1, 1)
            spacerItem1 = QtWidgets.QSpacerItem(40, 20, QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Minimum)
            gridLayout.addItem(spacerItem1, 0, 0, 1, 1)

            image_title.setText("Image title text")
            
            ui.player_list_table.setCellWidget(i,1,image_frame)

        ui.player_list_table.resizeRowsToContents()
        ui.player_list_table.resizeColumnsToContents()
        
        ui.player_list_table.selectRow(0)
        
        sys.exit(app.exec_())
        
if __name__=="__main__":
    main = Main()

问题是当我运行：python main.py 然后突出显示一行时，第一列中的文本颜色为白色，但第二列中的文本颜色为黑色。 ：/

在这种情况下我可以使用什么 qss 选择器？

【参考方案1】：

我使用currentCellChanged signal 来查找选择了哪一行。然后当这个信号发出时，我改变图像标题标签的 qss。

【讨论】：

您能否对您的答案添加更多见解？不是，不清楚你做了什么，也没有解释为什么。此外，如果修改只有几行，则无需再次发布未更改的文件，也无需发布整个修改的文件。

@musicamante 我编辑答案。

@ChrisP 最准确的答案总是最好的。准确不是最少但不多，这个想法是任何用户都可以了解如何应用解决方案，如果可能的话还可以解释原因，但是如果您启动大量代码只会让我们感到困惑

@ChrisP 抱歉，但您的编辑不是很有帮助（您可以看到这不仅仅是我的意见）。我相信您已经看到了很多很好的答案示例，它们不一定需要非常长或非常详细，但应该始终详尽并解释问题的原因（如果有的话）以及解决方案的工作原理。在您当前的答案中，您只告诉您正在使用什么方法，而不是显示和解释您如何使用它（也不是为什么）。