在QTableWidget / QTableView

时间:2016-09-02 10:18:38

标签: qt pyqt pyside

我需要拦截用户在QTableWidget中编辑单元格时发出的关键事件。有一个简单的方法吗?我在考虑安装事件过滤器,但我不知道如何获得对编辑器窗口小部件的引用。或者我是否需要以某种方式重新实现QItemDelegate?这似乎对我来说太过分了,不知道如何做到这一点,究竟需要重新实现什么。或者还有另一种方式吗?

我需要这个,因为例如当用户按下左/右光标键时,我想跳到左/右的下一个单元格。

2 个答案:

答案 0 :(得分:2)

似乎我终于想出来了,它完全符合我的需要。这是使用覆盖QStyledItemDelegate的PySide(C ++类似)的解决方案。在我看来,一开始有点矫枉过正,但并没有那么糟糕。

fromPySide import QtCore, QtGui

class LineEditDelegate(QtGui.QStyledItemDelegate):

    moveCurrentCellBy = QtCore.Signal(int, int)

    def __init__(self, parent=None):
        super(LineEditDelegate, self).__init__(parent)

    def createEditor(self, parent, option, index):
        self.editor = QtGui.QLineEdit(parent)
        self.editor.setFrame(False)
        self.editor.installEventFilter(self)
        return self.editor

    def setEditorData(self, editor, index):
        value = index.model().data(index, QtCore.Qt.EditRole)
        editor.setText(value)

    def setModelData(self, editor, model, index):
        value = editor.text()
        model.setData(index, value, QtCore.Qt.EditRole)

    def updateEditorGeometry(self, editor, option, index):
        editor.setGeometry(option.rect)

    def eventFilter(self, target, event):
        if target is self.editor:
            if event.type() == QtCore.QEvent.KeyPress:
                moveCell, row, column = False, 0, 0
                if event.key() in (QtCore.Qt.Key_Return, QtCore.Qt.Key_Enter, QtCore.Qt.Key_Down):
                    moveCell, row, column = True, 1, 0
                if event.key() in (QtCore.Qt.Key_Right, QtCore.Qt.Key_Tab):
                    moveCell, row, column = True, 0, 1
                if event.key() in (QtCore.Qt.Key_Left, QtCore.Qt.Key_Backtab):
                    moveCell, row, column = True, 0, -1
                if event.key() == QtCore.Qt.Key_Up:
                    moveCell, row, column = True, -1, 0
                if moveCell:
                    self.commitData.emit(self.editor)
                    self.closeEditor.emit(self.editor, QtGui.QAbstractItemDelegate.NoHint)
                    self.moveCurrentCellBy.emit(row, column)
                    return True
        return False     


class TableWidget(QtGui.QTableWidget):
    def __init__(self, parent=None):
        super(TableWidget, self).__init__(parent)
        delegate = LineEditDelegate()
        delegate.moveCurrentCellBy.connect(self.moveCurrentCellBy)
        self.setItemDelegate(delegate)

    def moveCurrentCellBy(self, rowStep, columnStep):
        row = self.currentRow() + rowStep
        column = self.currentColumn() + columnStep
        if row >= self.rowCount():
            self.setRowCount(row + 1)
        if column >= self.columnCount():
            self.setColumnCount(column + 1)
        self.setCurrentCell(row, column)

答案 1 :(得分:0)

或者你可以使用像这样的cellClicked信号:

  connect(ui->tbControl,SIGNAL(cellClicked(int,int)),this,SLOT(detectCellSelectionGraph(int,int)));