python - 如何将 mousePressEvent 从 QItemDelegate 传递给 QTableView

Question

代码创建了一个 QTableView。左列预填充了 QLineEdits 代表。右栏未填充任何代表。

当左列的委托(delegate) QLineEdit 被点击时，'clicked' 信号被委托(delegate)项阻止并且 tableView“cell”永远不会被选中。

要选择 tableView 项目，mousePressEvent 应该能够一直通过委托(delegate)项目到达 tableView。除了第 0 行之外，所有其他索引行都不会被选中。如何使其适用于所有模型索引？

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

class LineEdit(QTextEdit):
    def __init__(self, parent=None):
        super(LineEdit, self).__init__(parent)
    def mousePressEvent(self, event):
        tableView = self.parent().parent()
        tableView.mousePressEvent(event)

class Delegate(QItemDelegate):
    def createEditor(self, parent, option, index):
        return LineEdit(parent)

def onClick(index):
    print 'tableView.onClick:', index

tableView = QTableView()
tableView.setModel(QStandardItemModel(4, 2))
tableView.clicked.connect(onClick)
tableView.setItemDelegate(Delegate())

for row in range(4):
    tableView.openPersistentEditor(tableView.model().index(row, 0))

tableView.show()
app.exec_()

user1034749 发布的解决方案:

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

class LineEdit(QTextEdit):
    def __init__(self, parent=None):
        super(LineEdit, self).__init__(parent)

    def mouseReleaseEvent(self, event):
        super(LineEdit, self).mouseReleaseEvent(event)
        table = self.parent().parent() # added by me here
        tableView.selectRow(0) # to fix the issue with tableView row not getting selected on delegated click.
        event.ignore()

    def mousePressEvent(self, event):
        super(LineEdit, self).mousePressEvent(event)
        event.ignore()

class Delegate(QItemDelegate):
    def createEditor(self, parent, option, index):
        return LineEdit(parent)

def onClick(index):
    print 'tableView.onClick:', index
    selectedIndexes = tableView.selectionModel().selectedRows()

tableView = QTableView()
tableView.setSelectionBehavior(QTableView.SelectRows)
tableView.setModel(QStandardItemModel(4, 2))
tableView.clicked.connect(onClick)
tableView.setItemDelegate(Delegate())

for row in range(4):
    tableView.openPersistentEditor(tableView.model().index(row, 0))

tableView.show()
app.exec_()

Answer 1

要传递事件，您只需忽略它，如下所示:

 def mouseReleaseEvent(self, event):
        print "mouse release"
        super(LineEdit, self).mouseReleaseEvent(event)
        event.ignore()

 def mousePressEvent(self, event):
        print "mouse press"
        super(LineEdit, self).mousePressEvent(event)
        event.ignore()