Copy/Paste pyqt4 中 QTableView 的多个项目？

Question

我们可以使用 self.tableView.setSelectionMode(QAbstractItemView.ExtendedSelection) 从 QTableView select 多个项目（部分行和部分列），但是在 selecting 一些行和列（部分和部分）之后，如果我这样做CTRL+C 并将其粘贴到记事本中它只粘贴一项（tableView 中的一个值）?

我的代码：

tab_table_view = QtGui.QWidget()
self.Tab.insertTab(0, tab_table_view, self.File_Name)
self.tableView = QtGui.QTableView(tab_table_view)
self.tableView.setGeometry(QtCore.QRect(0, 0, 721, 571))
self.model = QtGui.QStandardItemModel(self)
self.model.setSortRole(QtCore.Qt.UserRole)
self.tableView.setModel(self.model)

    self.tableView.setSelectionMode(QAbstractItemView.ExtendedSelection) '''this helps for selecting multiple items but not able to copy and paste multiple values to a text/ excel (it only copies single value)'''

我们如何复制和粘贴多个项目？

Answer 1

QAbstractItemView.ExtendedSelection 当用户以通常的方式选择一个项目时，选择被清除并选择新项目。但是，如果用户在单击某个项目时按下 Ctrl 键，则单击的项目会切换，所有其他项目将保持不变。如果用户在单击某个项目的同时按下 Shift 键，则会选择或取消选择当前项目和所单击项目之间的所有项目，具体取决于所单击项目的状态。可以通过将鼠标拖到它们上面来选择多个项目。你也可以使用

QAbstractItemView.MultiSelection

Answer 2

self.tableView.installEventFilters(self)

现在，添加事件过滤器：

def eventFilter(self, source, event):
        if (event.type() == QtCore.QEvent.KeyPress and
            event.matches(QtGui.QKeySequence.Copy)):
            self.copySelection()
            return True
        return super(Window, self).eventFilter(source, event)

复制函数：

def copySelection(self):
        selection = self.tableView.selectedIndexes()
        if selection:
            rows = sorted(index.row() for index in selection)
            columns = sorted(index.column() for index in selection)
            rowcount = rows[-1] - rows[0] + 1
            colcount = columns[-1] - columns[0] + 1
            table = [[''] * colcount for _ in range(rowcount)]
            for index in selection:
                row = index.row() - rows[0]
                column = index.column() - columns[0]
                table[row][column] = index.data()
            stream = io.StringIO()
            csv.writer(stream).writerows(table)
            QtGui.qApp.clipboard().setText(stream.getvalue())

Answer 3

非常感谢上面的@learncode 评论，我设法得到了复制部分。此外，我修改了一点以支持复制到 Excel 以及相应的单元格顺序：

def copySelection(self):
    selection = self.selectedIndexes()
    if selection:
        rows = sorted(index.row() for index in selection)
        columns = sorted(index.column() for index in selection)
        rowcount = rows[-1] - rows[0] + 1
        colcount = columns[-1] - columns[0] + 1
        table = [[''] * colcount for _ in range(rowcount)]
        for index in selection:
            row = index.row() - rows[0]
            column = index.column() - columns[0]
            table[row][column] = index.data()
        stream = io.StringIO()
        csv.writer(stream, delimiter='\t').writerows(table)
        QtWidgets.qApp.clipboard().setText(stream.getvalue())
    return

除了复制，我还创建了粘贴部分。根据用户选择的单元格范围（一个单元格或单元格范围），此代码段支持粘贴不同形状的数据。

def pasteSelection(self):
    selection = self.selectedIndexes()
    if selection:
        model = self.model()

        buffer = QtWidgets.qApp.clipboard().text() 
        rows = sorted(index.row() for index in selection)
        columns = sorted(index.column() for index in selection)
        reader = csv.reader(io.StringIO(buffer), delimiter='\t')
        if len(rows) == 1 and len(columns) == 1:
            for i, line in enumerate(reader):
                for j, cell in enumerate(line):
                    model.setData(model.index(rows[0]+i,columns[0]+j), cell)
        else:
            arr = [ [ cell for cell in row ] for row in reader]
            for index in selection:
                row = index.row() - rows[0]
                column = index.column() - columns[0]
                model.setData(model.index(index.row(), index.column()), arr[row][column])
    return

Answer 4

这个答案扩展了@learncode 和@Frederick Li 的答案以适应

的情况

行列未按升序排列
视图中隐藏了某些行 and/or 列。

它还包括扩展事件过滤器以处理粘贴的代码。

class TableView(QTableView):
    def __init__(self, *args, **kwargs):
        super(TableView, self).__init__(*args, **kwargs)
        self.installEventFilter(self)

    def eventFilter(self, source, event):
        if event.type() == QEvent.KeyPress and event.matches(QKeySequence.Copy):
            self.copy_selection()
            return True
        elif event.type() == QEvent.KeyPress and event.matches(QKeySequence.Paste):
            self.paste_selection()
            return True
        return super(TableView, self).eventFilter(source, event)

    def copy_selection(self):
        selection = self.selectedIndexes()
        if selection:
            all_rows = []
            all_columns = []
            for index in selection:
                if not index.row() in all_rows:
                    all_rows.append(index.row())
                if not index.column() in all_columns:
                    all_columns.append(index.column())
            visible_rows = [row for row in all_rows if not self.isRowHidden(row)]
            visible_columns = [
                col for col in all_columns if not self.isColumnHidden(col)
            ]
            table = [[""] * len(visible_columns) for _ in range(len(visible_rows))]
            for index in selection:
                if index.row() in visible_rows and index.column() in visible_columns:
                    selection_row = visible_rows.index(index.row())
                    selection_column = visible_columns.index(index.column())
                    table[selection_row][selection_column] = index.data()
            stream = io.StringIO()
            csv.writer(stream, delimiter="\t").writerows(table)
            QApplication.clipboard().setText(stream.getvalue())

    def paste_selection(self):
        selection = self.selectedIndexes()
        if selection:
            model = self.model()

            buffer = QApplication.clipboard().text()
            all_rows = []
            all_columns = []
            for index in selection:
                if not index.row() in all_rows:
                    all_rows.append(index.row())
                if not index.column() in all_columns:
                    all_columns.append(index.column())
            visible_rows = [row for row in all_rows if not self.isRowHidden(row)]
            visible_columns = [
                col for col in all_columns if not self.isColumnHidden(col)
            ]

            reader = csv.reader(io.StringIO(buffer), delimiter="\t")
            arr = [[cell for cell in row] for row in reader]
            if len(arr) > 0:
                nrows = len(arr)
                ncols = len(arr[0])
                if len(visible_rows) == 1 and len(visible_columns) == 1:
                    # Only the top-left cell is highlighted.
                    for i in range(nrows):
                        insert_rows = [visible_rows[0]]
                        row = insert_rows[0] + 1
                        while len(insert_rows) < nrows:
                            row += 1
                            if not self.isRowHidden(row):
                                insert_rows.append(row)                              
                    for j in range(ncols):
                        insert_columns = [visible_columns[0]]
                        col = insert_columns[0] + 1
                        while len(insert_columns) < ncols:
                            col += 1
                            if not self.isColumnHidden(col):
                                insert_columns.append(col)
                    for i, insert_row in enumerate(insert_rows):
                        for j, insert_column in enumerate(insert_columns):
                            cell = arr[i][j]
                            model.setData(model.index(insert_row, insert_column), cell)
                else:
                    # Assume the selection size matches the clipboard data size.
                    for index in selection:
                        selection_row = visible_rows.index(index.row())
                        selection_column = visible_columns.index(index.column())
                        model.setData(
                            model.index(index.row(), index.column()),
                            arr[selection_row][selection_column],
                        )
        return

Copy/Paste pyqt4 中 QTableView 的多个项目？

Copy/Paste multiple items from QTableView in pyqt4?

python

pyqt4

copy-paste

qtableview

qabstractitemview