QItemDelegate 复选框
QItemDelegate CheckBox
因此，我在 Maya 中使用 python 和 PySide2 作为自定义工具。
我有一个模型（QTable模型）和一个QTable视图。
模型中的每一行都有一堆信息和一个复选框。
我必须做一个 QItemDelegate 并将其用作复选框。那也行。我无法确定该委托是否已选中。
我遍历模型以获取其数据（将其存储在节点中的 Maya 场景中）
data = []
rows = self.rowCount(1) #self is the model in this snnipet
for row in range(rows):
array = []
for column in range (6): #6 for the fixed number of columns
info = index.data()
array.append(index.data())
data.append(array)
碰巧每行的第一个项目是一个复选框（代表）。在最终的数据数组中，我最终得到了实际的 QItemDelegate Object 当我真的想获得它的状态时，检查与否，但它没有 isChecked() 方法。
关于如何获得它的想法？
非常感谢！
######## 编辑 1
所以，模型确实有评论中提到的标志：
def flags(self, index):
return QtCore.Qt.ItemIsEditable | QtCore.Qt.ItemIsEnabled | QtCore.Qt.ItemIsSelectable | QtCore.Qt.ItemIsUserCheckable
我想我做错了委托，正如我承认的那样，我在网上找到了这个 snnipet，我试图理解它....但它是这样的：
class CBDelegate(QItemDelegate):
def __init__(self, parent):
QItemDelegate.__init__(self, parent)
def paint(self, painter, option, index):
self.cb = QCheckBox()
try:
self.cb.setChecked(index.data())
except:
pass
if not self.parent().indexWidget(index):
self.parent().setIndexWidget(index, self.cb)
然后，在 Table视图中：
self.setItemDelegateForColumn(0, CBDelegate(self))
有帮助吗？ （如果你有 Maya 2017，我可以给你完整的代码……这有点乱，因为我用它作为学习练习！
谢谢。
############ 编辑 2
Table 查看：
class Table(QTableView):
def __init__(self, *args, **kwargs):
QTableView.__init__(self, *args, **kwargs)
# Set the delegate for column 0 of our table
#self.setItemDelegateForColumn(6, ButtonDelegate(self)) #problem for another time
self.setItemDelegateForColumn(0, CBDelegate(self))
型号：
class Model(QtCore.QAbstractTableModel):
def __init__(self, cycles = [[]], headers = [], parent = None):
QtCore.QAbstractTableModel.__init__(self, parent)
self.cycles = cycles
self.headers = headers
def rowCount(self, parent):
return len(self.cycles)
def columnCount(self, parent):
return len(self.cycles[0])
def flags(self, index):
return QtCore.Qt.ItemIsEditable | QtCore.Qt.ItemIsEnabled | QtCore.Qt.ItemIsSelectable | QtCore.Qt.ItemIsUserCheckable
def data(self, index, role):
if role == QtCore.Qt.DisplayRole:
row = index.row()
column = index.column()
value = self.cycles[row][column]
return value
if role == QtCore.Qt.EditRole:
row = index.row()
column = index.column()
return self.cycles[row][column]
if (role == QtCore.Qt.TextAlignmentRole):
return QtCore.Qt.AlignCenter;
def setData(self, index, value, role = QtCore.Qt.EditRole):
change = False
if role == QtCore.Qt.EditRole:
row = index.row()
column = index.column()
value = value
if (column == 1) or (column == 4):
try:
str(value)
change = True
except:
pm.warning("Not a valid name")
change = False
elif (column == 2):
try:
int(value)
change = True
except:
pm.warning("Not a valid frame")
change = False
elif (column == 3):
try:
int(value)
change = True
except:
pm.warning("Not a valid frame")
change = False
elif (column == 5):
try:
int(value)
change = True
except:
pm.warning("Not a valid version number")
change = False
if change:
self.cycles[row][column] = value
self.dataChanged.emit(row, column)
return True
return False
def headerData(self, section, orientation, role):
if role == QtCore.Qt.DisplayRole:
if orientation == QtCore.Qt.Horizontal:
return self.headers[section]
def insertRows(self, position, rows, values = [] , parent = QtCore.QModelIndex()):
self.beginInsertRows(parent, position, position+rows-1)
self.cycles.insert(position, values)
self.endInsertRows()
self.getData()
def getData(self):
rows = self.rowCount(1)
data = []
for row in range(rows):
array = []
for column in range (6):
index = self.index(row, column)
info = index.data()
if type(info) == bool:
array.append(info)
elif type(info) == QItemDelegate:
val_is_checked = index.data(QtCore.Qt.CheckStateRole) != QtCore.Qt.Unchecked
array.append(val_is_checked)
else:
info = str(info)
array.append(info)
array.append("del")
data.append(array)
dic = {}
for item in data:
dic[item[1]]=item
for key in dic:
print key, dic[key]
#this from pickle
#newData = data2String(dic)
# and this is what I wanna save inside Maya
#pm.setAttr("cycleAnimationListNode.cycles", newData)
代表在上面的编辑 1 中。
那我猜你还需要周期和 headers 来启动这个模型：
headers = ["Select", " Cycle Name ", " Start ", " End ", "Info", "Version", " Del "]
cycles = [[False,"idle","1","70","cool information","0", "deleteBtnPlaceHolder"]]
我希望这样做。
谢谢。
##### 编辑 3
我在模型中有这个自定义方法：
def getData(self):
rows = self.rowCount(1)
data = []
for row in range(rows):
array = []
for column in range (6):
index = self.index(row, column)
info = index.data()
array.append(info)
data.append(array)
dic = {}
for item in data:
dic[item[1]]=item
print ""
print "data:"
print ''
for key in dic:
print(key, dic[key])
我用它来将模型转换成字典，这样我就可以将它序列化并存储为 Autodesk Maya 中节点的字符串属性。它运行正常，但它从第一列获得的信息始终是 None。我必须以不同的方式检索它吗？
如果要显示一个QCheckBox，不需要使用delegate，只需要正确启用标志Qt::ItemIsUserCheckable，另外还必须通过[=13]保存信息=]，因为在您的代码中信息丢失了，因为存储在以下部分中显示了具有这些修改的模型：
更新：
之前禁用第一列角色 Qt::DisplayRole 的数据方法的 return，因为它将文本放在 table 中，这对我来说是不必要的，现在我启用了它但是为了不显示文本我放置了一个删除文本的委托
from PySide2.QtWidgets import *
from PySide2.QtCore import *
class Model(QAbstractTableModel):
def __init__(self, cycles = [[]], headers = [], parent = None):
QAbstractTableModel.__init__(self, parent)
self.cycles = cycles
self.headers = headers
self.values_checked = []
def rowCount(self, parent):
return len(self.cycles)
def columnCount(self, parent):
return len(self.cycles[0])
def flags(self, index):
fl = Qt.ItemIsEnabled | Qt.ItemIsSelectable
if index.column() == 0:
fl |= Qt.ItemIsUserCheckable
else:
fl |= Qt.ItemIsEditable
return fl
def data(self, index, role):
if not index.isValid():
return
row = index.row()
column = index.column()
if role == Qt.DisplayRole:
value = self.cycles[row][column]
return value
elif role == Qt.TextAlignmentRole:
return Qt.AlignCenter;
elif role == Qt.CheckStateRole and column==0:
return Qt.Checked if self.cycles[row][column] else Qt.Unchecked
def setData(self, index, value, role = Qt.EditRole):
change = False
row = index.row()
column = index.column()
if role == Qt.CheckStateRole:
value = value != Qt.Unchecked
change = True
if role == Qt.EditRole:
if (column == 1) or (column == 4):
try:
str(value)
change = True
except:
pm.warning("Not a valid name")
change = False
elif (column == 2):
try:
int(value)
change = True
except:
pm.warning("Not a valid frame")
change = False
elif (column == 3):
try:
int(value)
change = True
except:
pm.warning("Not a valid frame")
change = False
elif (column == 5):
try:
int(value)
change = True
except:
pm.warning("Not a valid version number")
change = False
if change:
self.cycles[row][column] = value
self.dataChanged.emit(row, column)
return True
return False
def headerData(self, section, orientation, role):
if role == Qt.DisplayRole:
if orientation == Qt.Horizontal:
return self.headers[section]
def insertRows(self, position, rows, values = [] , parent =QModelIndex()):
self.beginInsertRows(parent, position, position+rows-1)
self.cycles.insert(position, values)
self.endInsertRows()
self.getData()
def roleNames(self):
roles = QAbstractTableModel.roleNames(self)
roles["Checked"] = Qt.CheckStateRole
return roles
def getData(self):
rows = self.rowCount(1)
data = []
for row in range(rows):
array = []
for column in range (6):
index = self.index(row, column)
info = index.data()
array.append(info)
data.append(array)
dic = {}
for item in data:
dic[item[1]]=item
print("")
print("data:")
print('')
for key in dic:
print(key, dic[key])
class EmptyDelegate(QStyledItemDelegate):
def paint(self, painter, option, index):
opt = QStyleOptionViewItem(option)
self.initStyleOption(opt, index)
opt.text = ""
QApplication.style().drawControl(QStyle.CE_ItemViewItem, opt, painter)
if __name__ == '__main__':
import sys
app = QApplication(sys.argv)
w = QTableView()
w.setItemDelegateForColumn(0, EmptyDelegate(w))
headers = ["Select", " Cycle Name ", " Start ", " End ", "Info", "Version", " Del "]
cycles = [[True,"idle","1","70","cool information","0", "deleteBtnPlaceHolder"]]
model = Model(cycles, headers)
w.setModel(model)
w.show()
sys.exit(app.exec_())
因此，我在 Maya 中使用 python 和 PySide2 作为自定义工具。
我有一个模型（QTable模型）和一个QTable视图。
模型中的每一行都有一堆信息和一个复选框。
我必须做一个 QItemDelegate 并将其用作复选框。那也行。我无法确定该委托是否已选中。
我遍历模型以获取其数据（将其存储在节点中的 Maya 场景中）
data = []
rows = self.rowCount(1) #self is the model in this snnipet
for row in range(rows):
array = []
for column in range (6): #6 for the fixed number of columns
info = index.data()
array.append(index.data())
data.append(array)
碰巧每行的第一个项目是一个复选框（代表）。在最终的数据数组中，我最终得到了实际的 QItemDelegate Object 当我真的想获得它的状态时，检查与否，但它没有 isChecked() 方法。
关于如何获得它的想法？
非常感谢！
######## 编辑 1所以，模型确实有评论中提到的标志：
def flags(self, index):
return QtCore.Qt.ItemIsEditable | QtCore.Qt.ItemIsEnabled | QtCore.Qt.ItemIsSelectable | QtCore.Qt.ItemIsUserCheckable
我想我做错了委托，正如我承认的那样，我在网上找到了这个 snnipet，我试图理解它....但它是这样的：
class CBDelegate(QItemDelegate):
def __init__(self, parent):
QItemDelegate.__init__(self, parent)
def paint(self, painter, option, index):
self.cb = QCheckBox()
try:
self.cb.setChecked(index.data())
except:
pass
if not self.parent().indexWidget(index):
self.parent().setIndexWidget(index, self.cb)
然后，在 Table视图中：
self.setItemDelegateForColumn(0, CBDelegate(self))
有帮助吗？ （如果你有 Maya 2017，我可以给你完整的代码……这有点乱，因为我用它作为学习练习！
谢谢。
############ 编辑 2Table 查看：
class Table(QTableView):
def __init__(self, *args, **kwargs):
QTableView.__init__(self, *args, **kwargs)
# Set the delegate for column 0 of our table
#self.setItemDelegateForColumn(6, ButtonDelegate(self)) #problem for another time
self.setItemDelegateForColumn(0, CBDelegate(self))
型号：
class Model(QtCore.QAbstractTableModel):
def __init__(self, cycles = [[]], headers = [], parent = None):
QtCore.QAbstractTableModel.__init__(self, parent)
self.cycles = cycles
self.headers = headers
def rowCount(self, parent):
return len(self.cycles)
def columnCount(self, parent):
return len(self.cycles[0])
def flags(self, index):
return QtCore.Qt.ItemIsEditable | QtCore.Qt.ItemIsEnabled | QtCore.Qt.ItemIsSelectable | QtCore.Qt.ItemIsUserCheckable
def data(self, index, role):
if role == QtCore.Qt.DisplayRole:
row = index.row()
column = index.column()
value = self.cycles[row][column]
return value
if role == QtCore.Qt.EditRole:
row = index.row()
column = index.column()
return self.cycles[row][column]
if (role == QtCore.Qt.TextAlignmentRole):
return QtCore.Qt.AlignCenter;
def setData(self, index, value, role = QtCore.Qt.EditRole):
change = False
if role == QtCore.Qt.EditRole:
row = index.row()
column = index.column()
value = value
if (column == 1) or (column == 4):
try:
str(value)
change = True
except:
pm.warning("Not a valid name")
change = False
elif (column == 2):
try:
int(value)
change = True
except:
pm.warning("Not a valid frame")
change = False
elif (column == 3):
try:
int(value)
change = True
except:
pm.warning("Not a valid frame")
change = False
elif (column == 5):
try:
int(value)
change = True
except:
pm.warning("Not a valid version number")
change = False
if change:
self.cycles[row][column] = value
self.dataChanged.emit(row, column)
return True
return False
def headerData(self, section, orientation, role):
if role == QtCore.Qt.DisplayRole:
if orientation == QtCore.Qt.Horizontal:
return self.headers[section]
def insertRows(self, position, rows, values = [] , parent = QtCore.QModelIndex()):
self.beginInsertRows(parent, position, position+rows-1)
self.cycles.insert(position, values)
self.endInsertRows()
self.getData()
def getData(self):
rows = self.rowCount(1)
data = []
for row in range(rows):
array = []
for column in range (6):
index = self.index(row, column)
info = index.data()
if type(info) == bool:
array.append(info)
elif type(info) == QItemDelegate:
val_is_checked = index.data(QtCore.Qt.CheckStateRole) != QtCore.Qt.Unchecked
array.append(val_is_checked)
else:
info = str(info)
array.append(info)
array.append("del")
data.append(array)
dic = {}
for item in data:
dic[item[1]]=item
for key in dic:
print key, dic[key]
#this from pickle
#newData = data2String(dic)
# and this is what I wanna save inside Maya
#pm.setAttr("cycleAnimationListNode.cycles", newData)
代表在上面的编辑 1 中。
那我猜你还需要周期和 headers 来启动这个模型：
headers = ["Select", " Cycle Name ", " Start ", " End ", "Info", "Version", " Del "]
cycles = [[False,"idle","1","70","cool information","0", "deleteBtnPlaceHolder"]]
我希望这样做。
谢谢。
##### 编辑 3我在模型中有这个自定义方法：
def getData(self):
rows = self.rowCount(1)
data = []
for row in range(rows):
array = []
for column in range (6):
index = self.index(row, column)
info = index.data()
array.append(info)
data.append(array)
dic = {}
for item in data:
dic[item[1]]=item
print ""
print "data:"
print ''
for key in dic:
print(key, dic[key])
我用它来将模型转换成字典，这样我就可以将它序列化并存储为 Autodesk Maya 中节点的字符串属性。它运行正常，但它从第一列获得的信息始终是 None。我必须以不同的方式检索它吗？
如果要显示一个QCheckBox，不需要使用delegate，只需要正确启用标志Qt::ItemIsUserCheckable，另外还必须通过[=13]保存信息=]，因为在您的代码中信息丢失了，因为存储在以下部分中显示了具有这些修改的模型：
更新：
之前禁用第一列角色 Qt::DisplayRole 的数据方法的 return，因为它将文本放在 table 中，这对我来说是不必要的，现在我启用了它但是为了不显示文本我放置了一个删除文本的委托
from PySide2.QtWidgets import *
from PySide2.QtCore import *
class Model(QAbstractTableModel):
def __init__(self, cycles = [[]], headers = [], parent = None):
QAbstractTableModel.__init__(self, parent)
self.cycles = cycles
self.headers = headers
self.values_checked = []
def rowCount(self, parent):
return len(self.cycles)
def columnCount(self, parent):
return len(self.cycles[0])
def flags(self, index):
fl = Qt.ItemIsEnabled | Qt.ItemIsSelectable
if index.column() == 0:
fl |= Qt.ItemIsUserCheckable
else:
fl |= Qt.ItemIsEditable
return fl
def data(self, index, role):
if not index.isValid():
return
row = index.row()
column = index.column()
if role == Qt.DisplayRole:
value = self.cycles[row][column]
return value
elif role == Qt.TextAlignmentRole:
return Qt.AlignCenter;
elif role == Qt.CheckStateRole and column==0:
return Qt.Checked if self.cycles[row][column] else Qt.Unchecked
def setData(self, index, value, role = Qt.EditRole):
change = False
row = index.row()
column = index.column()
if role == Qt.CheckStateRole:
value = value != Qt.Unchecked
change = True
if role == Qt.EditRole:
if (column == 1) or (column == 4):
try:
str(value)
change = True
except:
pm.warning("Not a valid name")
change = False
elif (column == 2):
try:
int(value)
change = True
except:
pm.warning("Not a valid frame")
change = False
elif (column == 3):
try:
int(value)
change = True
except:
pm.warning("Not a valid frame")
change = False
elif (column == 5):
try:
int(value)
change = True
except:
pm.warning("Not a valid version number")
change = False
if change:
self.cycles[row][column] = value
self.dataChanged.emit(row, column)
return True
return False
def headerData(self, section, orientation, role):
if role == Qt.DisplayRole:
if orientation == Qt.Horizontal:
return self.headers[section]
def insertRows(self, position, rows, values = [] , parent =QModelIndex()):
self.beginInsertRows(parent, position, position+rows-1)
self.cycles.insert(position, values)
self.endInsertRows()
self.getData()
def roleNames(self):
roles = QAbstractTableModel.roleNames(self)
roles["Checked"] = Qt.CheckStateRole
return roles
def getData(self):
rows = self.rowCount(1)
data = []
for row in range(rows):
array = []
for column in range (6):
index = self.index(row, column)
info = index.data()
array.append(info)
data.append(array)
dic = {}
for item in data:
dic[item[1]]=item
print("")
print("data:")
print('')
for key in dic:
print(key, dic[key])
class EmptyDelegate(QStyledItemDelegate):
def paint(self, painter, option, index):
opt = QStyleOptionViewItem(option)
self.initStyleOption(opt, index)
opt.text = ""
QApplication.style().drawControl(QStyle.CE_ItemViewItem, opt, painter)
if __name__ == '__main__':
import sys
app = QApplication(sys.argv)
w = QTableView()
w.setItemDelegateForColumn(0, EmptyDelegate(w))
headers = ["Select", " Cycle Name ", " Start ", " End ", "Info", "Version", " Del "]
cycles = [[True,"idle","1","70","cool information","0", "deleteBtnPlaceHolder"]]
model = Model(cycles, headers)
w.setModel(model)
w.show()
sys.exit(app.exec_())