是否可以设置QTableView角按钮的文本?

akn*_*ds1 4 qt pyqt qt5 pyqt5

QTableView 有一个角按钮,占据水平和垂直标题之间的交叉点。单击此按钮将选择表中的所有单元格。我想知道是否可以设置此按钮的文本,如果可以,如何设置?

akn*_*ds1 5

我已经使用 PyQt 5.3 实现了一个可行的解决方案,并且只需要很少的代码。我的解决方案基于Qt 中心此问题中发布的代码。

from PyQt5 import QtWidgets, QtCore


class TableView(QtWidgets.QTableView):
    """QTableView specialization that can e.g. paint the top left corner header.
    """
    def __init__(self, nw_heading, parent):
        super(TableView, self).__init__(parent)

        self.__nw_heading = nw_heading
        btn = self.findChild(QtWidgets.QAbstractButton)
        btn.setText(self.__nw_heading)
        btn.setToolTip('Toggle selecting all table cells')
        btn.installEventFilter(self)

        opt = QtWidgets.QStyleOptionHeader()
        opt.text = btn.text()
        s = QtCore.QSize(btn.style().sizeFromContents(
            QtWidgets.QStyle.CT_HeaderSection, opt, QtCore.QSize(), btn).
            expandedTo(QtWidgets.QApplication.globalStrut()))

        if s.isValid():
            self.verticalHeader().setMinimumWidth(s.width())

    def eventFilter(self, obj, event):
        if event.type() != QtCore.QEvent.Paint or not isinstance(
                obj, QtWidgets.QAbstractButton):
            return False

        # Paint by hand (borrowed from QTableCornerButton)
        opt = QtWidgets.QStyleOptionHeader()
        opt.initFrom(obj)
        styleState = QtWidgets.QStyle.State_None
        if obj.isEnabled():
            styleState |= QtWidgets.QStyle.State_Enabled
        if obj.isActiveWindow():
            styleState |= QtWidgets.QStyle.State_Active
        if obj.isDown():
            styleState |= QtWidgets.QStyle.State_Sunken
        opt.state = styleState
        opt.rect = obj.rect()
        # This line is the only difference to QTableCornerButton
        opt.text = obj.text()
        opt.position = QtWidgets.QStyleOptionHeader.OnlyOneSection
        painter = QtWidgets.QStylePainter(obj)
        painter.drawControl(QtWidgets.QStyle.CE_Header, opt)

        return True
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