以下代码会创建一个QTableView
。双击其项目将使用委派的QComboBox
设置它。
问题:
单击ComboBox
时,其下拉菜单会显示瞬间,然后折叠回其展开状态。
如果使用comboBox
将combox.setEditable(True)
设置为可编辑,
下拉菜单将根据需要保持打开状态。但随后combobox
的项目变得可编辑。并不是所需要的。由于combobox
的项目只能选择。
如何解决自我崩溃的combobox
行为?
P.S。我注意到,当ComboBox
设置为可编辑且其下拉菜单展开时,模型的data()
会不断被调用...自我崩溃行为可能是由模型?
import sys
from PyQt4.QtCore import *
from PyQt4.QtGui import *
class ComboDelegate(QItemDelegate):
comboItems=['Combo_Zero', 'Combo_One','Combo_Two']
def createEditor(self, parent, option, proxyModelIndex):
combo = QComboBox(parent)
combo.addItems(self.comboItems)
# combo.setEditable(True)
self.connect(combo, SIGNAL("currentIndexChanged(int)"), self, SLOT("currentIndexChanged()"))
return combo
def setModelData(self, combo, model, index):
comboIndex=combo.currentIndex()
text=self.comboItems[comboIndex]
model.setData(index, text)
print '\t\t\t ...setModelData() 1', text
@pyqtSlot()
def currentIndexChanged(self):
self.commitData.emit(self.sender())
class MyModel(QAbstractTableModel):
def __init__(self, parent=None, *args):
QAbstractTableModel.__init__(self, parent, *args)
self.items=['Data_Item01','Data_Item02','Data_Item03']
def rowCount(self, parent=QModelIndex()):
return len(self.items)
def columnCount(self, parent=QModelIndex()):
return 1
def data(self, index, role):
if not index.isValid(): return QVariant()
row=index.row()
item=self.items[row]
if row>len(self.items): return QVariant()
if role == Qt.DisplayRole:
print ' << >> MyModel.data() returning ...', item
return QVariant(item)
def flags(self, index):
return Qt.ItemIsEditable | Qt.ItemIsEnabled
def setData(self, index, text):
self.items[index.row()]=text
if __name__ == '__main__':
app = QApplication(sys.argv)
model = MyModel()
tableView = QTableView()
tableView.setModel(model)
delegate = ComboDelegate()
tableView.setItemDelegate(delegate)
tableView.resizeRowsToContents()
tableView.show()
sys.exit(app.exec_())
答案 0 :(得分:4)
您的原始代码在PyQt5中运行,combobox
保持打开状态。但是用户必须单击以打开编辑器,然后单击以打开combobox
。为避免这种情况,我在代码中将QComboBox
替换为QlistWidget
。另外我设置了editorGeometry
:
import sys
# from PyQt4.QtCore import *
# from PyQt4.QtGui import *
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
class ComboDelegate(QItemDelegate):
editorItems=['Combo_Zero', 'Combo_One','Combo_Two']
height = 25
width = 200
def createEditor(self, parent, option, index):
editor = QListWidget(parent)
# editor.addItems(self.editorItems)
# editor.setEditable(True)
editor.currentItemChanged.connect(self.currentItemChanged)
return editor
def setEditorData(self,editor,index):
z = 0
for item in self.editorItems:
ai = QListWidgetItem(item)
editor.addItem(ai)
if item == index.data():
editor.setCurrentItem(editor.item(z))
z += 1
editor.setGeometry(0,index.row()*self.height,self.width,self.height*len(self.editorItems))
def setModelData(self, editor, model, index):
editorIndex=editor.currentIndex()
text=editor.currentItem().text()
model.setData(index, text)
# print '\t\t\t ...setModelData() 1', text
@pyqtSlot()
def currentItemChanged(self):
self.commitData.emit(self.sender())
class MyModel(QAbstractTableModel):
def __init__(self, parent=None, *args):
QAbstractTableModel.__init__(self, parent, *args)
self.items=['Data_Item01','Data_Item02','Data_Item03']
def rowCount(self, parent=QModelIndex()):
return len(self.items)
def columnCount(self, parent=QModelIndex()):
return 1
def data(self, index, role):
if not index.isValid(): return QVariant()
row=index.row()
item=self.items[row]
if row>len(self.items): return QVariant()
if role == Qt.DisplayRole:
# print ' << >> MyModel.data() returning ...', item
return QVariant(item)
def flags(self, index):
return Qt.ItemIsEditable | Qt.ItemIsEnabled
def setData(self, index, text):
self.items[index.row()]=text
if __name__ == '__main__':
app = QApplication(sys.argv)
model = MyModel()
tableView = QTableView()
tableView.setModel(model)
delegate = ComboDelegate()
tableView.setItemDelegate(delegate)
for i in range(0,tableView.model().rowCount()):
tableView.setRowHeight(i,tableView.itemDelegate().height)
for i in range(0,tableView.model().columnCount()):
tableView.setColumnWidth(i,tableView.itemDelegate().width)
tableView.show()
sys.exit(app.exec_())
答案 1 :(得分:2)
以下是尝试将QComboBox
替换为与QToolButton
和QMenu
相关联的QAction
。
外观与QComboBox
大致相同,并且具有设置多个QActions
已设置的附加功能(目前无法拥有多个组合框的项目)选中)。
import sys
from PyQt4.QtCore import *
from PyQt4.QtGui import *
class ComboDelegate(QItemDelegate):
comboItems=['Combo_Zero', 'Combo_One','Combo_Two']
def __init__(self, parent):
QItemDelegate.__init__(self, parent=None)
self.actionEmitted=None
def createEditor(self, parent, option, index):
if not index.isValid(): return
model=index.model()
itemName=model.data(index, Qt.DisplayRole)
toolButton=QToolButton(parent)
toolButton.setText( itemName.toString() )
toolButton.setPopupMode(QToolButton.InstantPopup)
menu=QMenu(parent)
action1=QAction('Action 01', menu, checkable=True)
action2=QAction('Action 02', menu, checkable=True)
action3=QAction('Action 03', menu, checkable=True)
action1.setObjectName('Action 01')
action2.setObjectName('Action 02')
action3.setObjectName('Action 03')
action1.setChecked(True)
action3.setChecked(True)
self.connect(action1, SIGNAL("triggered(bool)"), self, SLOT("actionTriggered()"))
self.connect(action2, SIGNAL("triggered(bool)"), self, SLOT("actionTriggered()"))
self.connect(action3, SIGNAL("triggered(bool)"), self, SLOT("actionTriggered()"))
menu.addAction(action1)
menu.addAction(action2)
menu.addAction(action3)
toolButton.setMenu(menu)
return toolButton
def setModelData(self, toolButton, model, index):
print '\t\t\t ...setModelData() 1', toolButton, model, index
if not self.actionEmitted: return
menu=toolButton.menu()
for action in menu.actions():
actionName=action.objectName()
actionStatus=action.isChecked()
if actionStatus:
model.setData(index, actionName)
print '####', actionName, actionStatus
@pyqtSlot()
def actionTriggered(self):
self.actionEmitted=self.sender()
self.commitData.emit( self.actionEmitted )
print 'actionTriggered.....', self.actionEmitted
class MyModel(QAbstractTableModel):
def __init__(self, parent=None, *args):
QAbstractTableModel.__init__(self, parent, *args)
self.items=['Data_Item01','Data_Item02','Data_Item03']
def rowCount(self, parent=QModelIndex()):
return len(self.items)
def columnCount(self, parent=QModelIndex()):
return 1
def data(self, index, role):
if not index.isValid(): return QVariant()
row=index.row()
item=self.items[row]
if row>len(self.items): return QVariant()
if role == Qt.DisplayRole:
print ' << >> MyModel.data() returning ...', item
return QVariant(item)
def flags(self, index):
return Qt.ItemIsEditable | Qt.ItemIsEnabled
def setData(self, index, itemName):
self.items[index.row()]=itemName
if __name__ == '__main__':
app = QApplication(sys.argv)
combo=QComboBox()
combo.addItems(['Combo_Zero', 'Combo_One','Combo_Two'])
model = MyModel()
tableView = QTableView()
tableView.setModel(model)
delegate = ComboDelegate(tableView)
tableView.setItemDelegate(delegate)
tableView.resizeRowsToContents()
tableView.show()
sys.exit(app.exec_())