如何连接两个QTableview小部件？

Question

import sys
from PyQt5 import QtCore as qtc
from PyQt5 import QtWidgets as qtw
from PyQt5 import QtGui as qtg
import os.path
import pandas as pd

class a(qtw.QStyledItemDelegate):
    def createEditor(self, parent, option, index):
        line_edit = qtw.QLineEdit(parent)
        line_edit.setMaxLength(3)
        return line_edit
class ColorDelegate(qtw.QStyledItemDelegate):
    def initStyleOption(self, option, index):
        super().initStyleOption(option, index)
        if option.text.strip(): # condition
            option.backgroundBrush = qtg.QColor("red")

class MainWindow(qtw.QMainWindow):
    def __init__(self):
        super().__init__()
        ##Main framwork
        self.createUI()

    def createUI(self):

        self.resize(qtc.QSize(1200, 800))
        base_widget = qtw.QWidget()
        base_widget.setLayout(qtw.QHBoxLayout())
        notebook = qtw.QVBoxLayout()
        base_widget.layout().addLayout(notebook)
        self.file_list = qtw.QVBoxLayout()
        notebook.setSpacing(10)
        notebook.setContentsMargins(0, 0, 0, 0)
        base_widget.layout().addLayout(self.file_list)
        spacerItem = qtw.QSpacerItem(20, 245, qtw.QSizePolicy.Minimum, qtw.QSizePolicy.Expanding)
        base_widget.layout().addItem(spacerItem)
        self.setCentralWidget(base_widget)

        # self.Detailbar = qtw.QHBoxLayout()
        self.Statusbar = qtw.QTableView()
        self.stausbar_model = qtg.QStandardItemModel(self)
        self.Statusbar.setModel(self.stausbar_model)
        self.Statusbar.setFixedHeight(70)
        self.Statusbar.setEditTriggers(qtw.QAbstractItemView.NoEditTriggers)
        notebook.addWidget(self.Statusbar)

        # CREATE THE TABLE
        self.tableWidget = qtw.QTableView(self)  # SELECTING THE VIEW
        self.tableWidget.setGeometry(0, 0, 100, 100)
        self.model = qtg.QStandardItemModel(self)
        self.model.setHorizontalHeaderLabels(['ID', 'Category', 'Time','Comment'])   # SELECTING THE MODEL - FRAMEWORK THAT HANDLES QUERIES AND EDITS
        self.tableWidget.setModel(self.model)  # SETTING THE MODEL
        self.tableWidget.setSelectionBehavior(qtw.QAbstractItemView.SelectRows)
        self.Size = QTableWidgetDisabledItem(self.tableWidget)
        self.tableWidget.setItemDelegateForColumn(0, self.Size)
        self.tableWidget.setItemDelegateForColumn(1, self.Size)
        self.tableWidget.setItemDelegateForColumn(2, self.Size)
        self.tableWidget.doubleClicked.connect(self.on_click)
        delegate = ColorDelegate(self.tableWidget)
        # self.tableWidget.setItemDelegateForColumn(3, delegate)
        self.tableWidget.setItemDelegate(delegate)
        self.file_list.addWidget(self.tableWidget)


    def populate(self):
        # GENERATE A 4x10 GRID OF RANDOM NUMBERS.
        # VALUES WILL CONTAIN A LIST OF INT.
        # MODEL ONLY ACCEPTS STRINGS - MUST CONVERT.
        csv_fname = os.path.splitext(self.fname)[0]
        edited_csv_fname = csv_fname + ".csv"
        self.data = pd.read_csv(edited_csv_fname)
        values = []
        for i in range(len(self.data.index)):
            sub_values = []
            for j in range(len(self.data.columns)):
                value = self.data.iloc[i, j]
                sub_values.append(value)
            values.append(sub_values)

        for value in values:
            row = []
            for item in value:
                cell = qtg.QStandardItem(str(item))
                row.append(cell)
            self.model.appendRow(row)

        qd = []
        for k in range(len(self.data.index)):
            qd.append(qtg.QStandardItem(str('')))
        self.stausbar_model.appendRow(qd)

    def flags(self, index):
        flags = super(self.__class__, self).flags(index)
        flags |= qtc.Qt.ItemIsEditable
        flags |= qtc.Qt.ItemIsSelectable
        flags |= qtc.Qt.ItemIsEnabled
        flags |= qtc.Qt.ItemIsDragEnabled
        flags |= qtc.Qt.ItemIsDropEnabled
        return flags

class QTableWidgetDisabledItem(qtw.QItemDelegate):

    def __init__(self, parent):
        qtw.QItemDelegate.__init__(self, parent)

    def createEditor(self, parent, option, index):
        item = qtw.QLineEdit(parent)
        item.setReadOnly(True)
        #item.setEnabled(False)
        return item

    def setEditorData(self, editor, index):
        editor.blockSignals(True)
        editor.setText(index.model().data(index))
        editor.blockSignals(False)

    def setModelData(self, editor, model, index):
        model.setData(index, editor.text())

if __name__ == '__main__':
    app = qtw.QApplication(sys.argv) #it's required to save a referance to MainWindow
    mw = MainWindow()
    mw.show()
    sys.exit(app.exec_())
    #if it goes out of scope ,it will be destroyed

我有两个QTableview窗口小部件，第一个QtableView窗口小部件具有26行和4列，第四列仅可编辑，并且，第二个Qtableviw窗口小部件具有1行和26列，如果我在第4列的第一个Qtablview中更改了背景颜色，更改，并在第二个Qtableview中更改。背景颜色将更改。

在详细信息中，如果我在第一个QTableview中的单元格索引（10,3）中填充任何tex，则第一个Qtableview小部件具有26行和4列，第4个仅可编辑，第二个QTableview小部件具有1行和26列。会发生变化，第二个QTableview背景颜色的单元格索引（0,10）也会发生变化。

Answer 1

您必须检测第二个QTableView对应项的更改，获取该行，以便能够设置第一个QTableView对应项的背景颜色。

import sys
from PyQt5 import QtCore as qtc
from PyQt5 import QtWidgets as qtw
from PyQt5 import QtGui as qtg


class QTableWidgetDisabledItem(qtw.QItemDelegate):
    def createEditor(self, parent, option, index):
        return


class MainWindow(qtw.QMainWindow):
    def __init__(self, parent=None):
        super().__init__(parent)
        self.createUI()

    def createUI(self):

        self.Statusbar = qtw.QTableView(
            editTriggers=qtw.QAbstractItemView.NoEditTriggers
        )
        self.statusbar_model = qtg.QStandardItemModel(self)
        self.Statusbar.setModel(self.statusbar_model)
        self.Statusbar.setFixedHeight(70)

        self.tableWidget = qtw.QTableView(
            selectionBehavior=qtw.QAbstractItemView.SelectRows
        )
        self.tableWidget.setGeometry(0, 0, 100, 100)
        self.model = qtg.QStandardItemModel(self)
        self.model.setHorizontalHeaderLabels(["ID", "Category", "Time", "Comment"])
        self.tableWidget.setModel(self.model)
        for i in range(3):
            delegate = QTableWidgetDisabledItem(self.tableWidget)
            self.tableWidget.setItemDelegateForColumn(i, delegate)

        self.model.itemChanged.connect(self.on_itemChanged)

        self.resize(qtc.QSize(1200, 800))
        base_widget = qtw.QWidget()
        self.setCentralWidget(base_widget)
        notebook = qtw.QVBoxLayout()
        notebook.setSpacing(10)
        notebook.setContentsMargins(0, 0, 0, 0)
        notebook.addWidget(self.Statusbar, alignment=qtc.Qt.AlignTop)
        lay = qtw.QHBoxLayout(base_widget)
        lay.addLayout(notebook)
        self.file_list = qtw.QVBoxLayout()
        self.file_list.addWidget(self.tableWidget)
        lay.addLayout(self.file_list)

        self.populate()

    def populate(self):
        # emulate populate
        self.model.setRowCount(26)
        self.statusbar_model.setRowCount(1)
        self.statusbar_model.setColumnCount(self.model.rowCount())

    @qtc.pyqtSlot("QStandardItem*")
    def on_itemChanged(self, item):
        if item.column() == 3:
            it = self.statusbar_model.item(0, item.row())
            if it is None:
                it = qtg.QStandardItem()
                self.statusbar_model.setItem(0, item.row(), it)
            brush = (
                qtg.QBrush(qtg.QColor("red")) if item.text().strip() else qtg.QBrush()
            )
            it.setBackground(brush)


if __name__ == "__main__":
    app = qtw.QApplication(sys.argv)
    mw = MainWindow()
    mw.show()
    sys.exit(app.exec_())