QCheckableHeaderView

class QCheckableHeaderView(QtGui.QHeaderView):
    '''
    Checkable QHeaderView. Column 0 contains a checkbox that emits
    a signal when it's check state is updated.
    '''
    is_on = True
    signal_checked = QtCore.pyqtSignal(bool)

    def __init__(self, *args, **kwargs):
        super(QCheckableHeaderView, self).__init__(*args, **kwargs)
        self.setStretchLastSection(True)
        self.setDefaultAlignment(QtCore.Qt.AlignLeft)

    def paintSection(self, painter, rect, logicalindex):
        painter.save()
        super(QCheckableHeaderView, self).paintSection(painter, rect, logicalindex)
        painter.restore()
        if logicalindex == 0:
            option = QtGui.QStyleOptionButton()
            option.rect = QtCore.QRect(0, 7, 5, 0)
            if self.is_on:
                option.state = QtGui.QStyle.State_On
            else:
                option.state = QtGui.QStyle.State_Off
            self.style().drawControl(QtGui.QStyle.CE_CheckBox, option, painter)

    def mousePressEvent(self, event):
        logicalindex = self.logicalIndexAt(event.pos())
        if logicalindex == 0:
            self.is_on = not self.is_on
            self.updateSection(0)
            self.signal_checked.emit(self.is_on)
        super(QCheckableHeaderView, self).mousePressEvent(event)