我有一个 QTableView，我在其中使用 QItemDelegate 作为按钮。我正在尝试更改按钮的颜色，所以当我单击它时，我调用了 QColorDialog。但是后来我无法将颜色发送回按钮。
到目前为止，情况如下：
按钮和 QColorDialog：
class ButtonDelegate(QItemDelegate):
def __init__(self, parent):
QItemDelegate.__init__(self, parent)
def paint(self, painter, option, index):
widget = QWidget()
layout = QHBoxLayout()
widget.setLayout(layout)
btn = QPushButton('')
btn.setStyleSheet("background-color:rgb(86,12,65)")
ix = QPersistentModelIndex(index)
btn.clicked.connect(lambda ix = ix : self.onClicked(ix))
layout.addWidget(btn)
layout.setContentsMargins(2,2,2,2)
if not self.parent().indexWidget(index):
self.parent().setIndexWidget(index, widget)
def onClicked(self, ix):
colorPicker = QColorDialog.getColor()
#colorPicker.show()
r = str(colorPicker.red())
g = str(colorPicker.red())
b = str(colorPicker.red())
bgcolor = 'background-color:rgb(' + r + ',' + g + ',' + b +')'
下一步是什么？我尝试将委托初始化中的按钮声明为self.btn = QPushButton()，然后在 onCLick 方法中重用它，但按钮甚至没有以这种方式绘制。
一些启示？
谢谢！
编辑 1模型：
class Model(QAbstractTableModel):
def __init__(self, vtxTable, parent = None):
QAbstractTableModel.__init__(self, parent)
#data
self.groups = []
#header
self.header_labels = ['Color', 'Group', 'Done']
self.vtxTable = vtxTable
def rowCount(self, parent):
return len(self.groups)
def columnCount(self, parent):
return 3
def flags(self, index):
if index.column() == 2:
fl = fl = Qt.ItemIsEnabled | Qt.ItemIsSelectable
else:
fl = Qt.ItemIsSelectable | Qt.ItemIsEnabled | Qt.ItemIsEditable
return fl
def headerData(self, section, orientation, role):
if role == Qt.DisplayRole and orientation == Qt.Horizontal:
return self.header_labels[section]
def removeRow(self, row, parent = QModelIndex()):
self.beginRemoveRows(parent, row, row)
self.groups.remove(self.groups[row])
self.endRemoveRows()
self.vtxTable.setModel(QStringListModel())
def insertRows(self, position, row, values = [] , parent = QModelIndex()):
lastposition = self.rowCount(0)
self.beginInsertRows(parent, lastposition, lastposition)
self.groups.insert(lastposition, values)
self.endInsertRows()
def setData(self, index, value, role = Qt.EditRole):
setIt = False
value = value
row = index.row()
column = index.column()
if role == Qt.EditRole:
setIt = True
if not len(value) == 0:
if value in self.getGrpNames():
warning("Group must have a unique name.")
setIt = False
else:
setIt = True
else:
warning("New group must have a name.")
setIt = False
if role == Qt.BackgroundRole:
setIt = True
if setIt:
self.groups[row][column] = value
self.dataChanged.emit(row, column)
return False
def data(self, index, role):
if not index.isValid():
return
row = index.row()
column = index.column()
if role == Qt.DisplayRole:
if column == 0:
#value = [self.groups[row][column].redF(), self.groups[row][column].greenF(), self.groups[row][column].blueF()]
value = self.groups[row][column]
else:
value = self.groups[row][column]
return value
elif role == Qt.TextAlignmentRole:
return Qt.AlignCenter;
elif role == Qt.EditRole:
index = index
return index.data()
elif role == Qt.BackgroundRole and column == 0:
value = self.groups[row][column]
def getGrpNames(self):
rows = self.rowCount(1)
grps = []
for row in range(rows):
grp = self.index(row, 1).data()
grps.append(grp)
return grps
def getAllVtx(self):
rows = self.rowCount(1)
allVtxs = []
for row in range(rows):
index = self.createIndex(row, 3)
vtxs = index.data()
for vtx in vtxs:
allVtxs.append(vtx)
return allVtxs
def getData(self):
rows = self.rowCount(1)
data = {}
for row in range(rows):
color = self.index(row, 0).data()
grp = self.index(row, 1).data()
done = self.index(row, 2).data()
vtxs = self.groups[row][3]
#index = self.createIndex(row,0)
data[grp] = [grp, color, done, vtxs]
return data
def queryVtx(self, vtx):
data = self.getData()
for key in data:
vtxs = data[key][3]
if vtx in vtxs:
return data[key][0]
else:
return False
表视图：
class Table(QTableView):
def __init__(self, *args, **kwargs):
QTableView.__init__(self, *args, **kwargs)
self.setItemDelegateForColumn(0, colorDelegate(self))
hHeader = self.horizontalHeader()
#hHeader.setSectionResizeMode(QHeaderView.Fixed);
self.setSelectionBehavior(QAbstractItemView.SelectRows)
self.setSelectionMode(QAbstractItemView.SingleSelection)
vHeader = self.verticalHeader()
vHeader.hide()
单击该行的第一个单元格时，我希望能够为其选择一种颜色，并将其保存在模型中。
谢谢你。