Pyside6：从 QTableWidget 复制粘贴、删除、撤消多个单元格

我希望能够使用 control-C control-V 在 Pyside6 表 (QTableWidget) 之间进行复制和粘贴，主要是在 Excel 之间进行复制和粘贴。 我找到了 @Momo 2023 年 1 月的帖子。1 https://stackoverflow.com/questions/75095259/pyqt5-copy-paste-from-a-qtablewidget-with-contextmenu-and-with-keyboardpress这似乎对我不起作用，可能是因为我正在使用 Pyside6 而不是 PyQt5。 有什么解决方案吗？

我自己的问题的答案： 我更改了 Momo 的代码以使其适合我，并且添加了删除多个单元格以及通过粘贴或删除撤消错误的可能性。撤消操作仅在光标所在的表格内进行。

有没有更好的方法可以做到这一点，或者您可以提供改进建议吗？

import PySide6.QtWidgets as QtWidgets
from PySide6 import QtCore, QtGui
from PySide6.QtGui import QGuiApplication


class CopyPasteDelTableWidget(QtWidgets.QTableWidget):
    def __init__(self, n_rows, n_columns):
        super().__init__(n_rows, n_columns)
        self.forundo = []
        self.setSelectionMode(QtWidgets.QAbstractItemView.ContiguousSelection)
        self.installEventFilter(self)


    def eventFilter(self, source, event):
        if event.type() == QtCore.QEvent.KeyPress:
            if event == QtGui.QKeySequence.Copy:
                self.copySelection()
                return True
            elif event == QtGui.QKeySequence.Paste:
                self.pasteSelection()
                return True
            elif event == QtGui.QKeySequence.Delete:
                self.deleteSelection()
                return True
            elif event == QtGui.QKeySequence.Cut:
                self.copySelection()
                self.deleteSelection()
                return True
            elif event == QtGui.QKeySequence.Undo:
                self.undoSelection()
                return True
        return super(QTableWidget, self).eventFilter(source, event)


    def deleteSelection(self):
        self.forundo.append([self.selectedRanges()[0].topRow(), self.selectedRanges()[0].leftColumn(), []])
        for i_row in range(self.selectedRanges()[0].topRow(), self.selectedRanges()[0].bottomRow() + 1):
            undorow = []
            for i_col in range(self.selectedRanges()[0].leftColumn(), self.selectedRanges()[0].rightColumn() + 1):
                undorow.append(self.item(i_row, i_col).text())
                self.setItem(i_row, i_col, QtWidgets.QTableWidgetItem(''))
            self.forundo[-1][2].append(undorow)


    def copySelection(self):
        copied = ''
        for row in range(self.selectedRanges()[0].topRow(), self.selectedRanges()[0].bottomRow() + 1):
            for col in range(self.selectedRanges()[0].leftColumn(), self.selectedRanges()[0].rightColumn() + 1):
                copied += self.item(row, col).text() + '\t'
            copied = copied[:-1] + '\n'
        QGuiApplication.clipboard().setText(copied)


    def pasteSelection(self):
        if not QGuiApplication.clipboard():
            return
        copied = QGuiApplication.clipboard().text().split('\n')
        self.forundo.append([self.selectedRanges()[0].topRow(), self.selectedRanges()[0].leftColumn(), []])
        if copied[-1] == '':
            copied = copied[:-1]
        for i_line, line in enumerate(copied):
            copied[i_line] = line.split('\t')
        for i_row, row in enumerate(copied):
            undorow = []
            k_row = i_row + self.selectedRanges()[0].topRow()
            if k_row < self.rowCount():
                for i_col, col in enumerate(row):
                    k_col = i_col + self.selectedRanges()[0].leftColumn()
                    if k_col < self.columnCount():
                        undorow.append(self.item(k_row, k_col).text())
                        self.setItem(k_row, k_col, QtWidgets.QTableWidgetItem(col))
            self.forundo[-1][2].append(undorow)


    def undoSelection(self):
        if len(self.forundo) > 0:
            prevundo = self.forundo.pop()
            self.setCurrentCell(prevundo[0], prevundo[1])
            for i_row, row in enumerate(prevundo[2]):
                for i_col, col in enumerate(row):
                    self.setItem(i_row + prevundo[0], i_col + prevundo[1], QtWidgets.QTableWidgetItem(col))