如何阻止 Item Delegate 阻止 mousePressEvent

Question

QTableView 被分配 QAbstractTableModel 作为模型。 ItemDelegate(QItemDelegate) 被分配了 tableView.openPersistentEditor。现在，当单击 tableView 时，事件不会一直传播到 tableView（它是否被委托 QLineEditor 阻止）。

传递 QLineEdit'smousePressEventevent that is passed through theItemDelegatetoQTableView 的模型when the tableView's item is clicked even while it is occupied byQItemInstance? Is there anyQItemDelegate` 标志的方法是什么完成任务？

代码创建了一个带有模型和委托的 tableView。通过单击第 0 列或第 1 列触发的事件不会传播到 tableView 的项目，因为该项目保持取消选择状态。

取消注释 tableView.setSelectionBehavior(QtGui.QTableView.SelectRows) 的行可以解决问题。是吗？

from PyQt4 import QtCore, QtGui
app = QtGui.QApplication([])

class LineEdit(QtGui.QLineEdit):
    def __init__(self, parent=None, total=20):
        super(LineEdit, self).__init__(parent=parent)

    def mousePressEvent(self, event):
        print 'mousePressEvent', event
        super(LineEdit, self).mousePressEvent(event)

class Delegate(QtGui.QItemDelegate):
    def __init__(self):
        QtGui.QItemDelegate.__init__(self)

    def createEditor(self, parent, option, index):
        if index.column()==0:
            lineedit=LineEdit(parent)
            return lineedit

        elif index.column()==1:
            combo=QtGui.QComboBox(parent)
            return combo

    def setEditorData(self, editor, index):
        row = index.row()
        column = index.column()
        value = index.model().items[row][column]
        if isinstance(editor, QtGui.QComboBox):
            editor.addItems(['Somewhere','Over','The Rainbow'])
            editor.setCurrentIndex(index.row())
        if isinstance(editor, QtGui.QLineEdit):
            editor.setText('Somewhere over the rainbow')

class Model(QtCore.QAbstractTableModel):
    def __init__(self):
        QtCore.QAbstractTableModel.__init__(self)
        self.items = [[1, 'one', 'ONE'], [2, 'two', 'TWO'], [3, 'three', 'THREE']]

    def flags(self, index):
        return QtCore.Qt.ItemIsEnabled | QtCore.Qt.ItemIsSelectable | QtCore.Qt.ItemIsEditable
    def rowCount(self, parent=QtCore.QModelIndex()):
        return 3 
    def columnCount(self, parent=QtCore.QModelIndex()):
        return 3

    def data(self, index, role):
        if not index.isValid(): return 
        row = index.row()
        column = index.column()
        if role == QtCore.Qt.DisplayRole or role == QtCore.Qt.EditRole:
            return self.items[row][column]

def tableViewClicked(index):
    print 'clicked:  %s'%index


tableModel=Model()
tableView=QtGui.QTableView() 
tableView.setModel(tableModel)
tableView.setItemDelegate(Delegate())
# tableView.setSelectionBehavior(QtGui.QTableView.SelectRows)
tableView.clicked.connect(tableViewClicked)

for row in range(tableModel.rowCount()):
    for column in range(tableModel.columnCount()):
        index=tableModel.index(row, column)
        tableView.openPersistentEditor(index)

tableView.show()
app.exec_()

Answer 1

为什么不在委托项的函数中使用模型对象指针？例如，将您的委托项的信号连接到模型的插槽，或在您的委托项的事件处理程序中调用模型的函数？

如何阻止 Item Delegate 阻止 mousePressEvent

How to stop Item Delegate from blocking mousePressEvent

python

qt

pyqt

qtableview

qitemdelegate