qtreeview root colored - colors

Question

I have a QTreeView with a colored background but I need to have also the root colored..
I'm not able to do so.
Someone can help me?
This is the code..
Thanks
from PyQt4 import QtGui, QtCore
HORIZONTAL_HEADERS = ("Surname", "Given Name")
class person_class(object):
def init(self, sname, fname, isMale):
self.sname = sname
self.fname = fname
self.isMale = isMale
class TreeItem(object):
def init(self, person, header, parentItem):
self.person = person
self.parentItem = parentItem
self.header = header
self.childItems = []
def appendChild(self, item):
self.childItems.append(item)
def child(self, row):
return self.childItems[row]
def childCount(self):
return len(self.childItems)
def columnCount(self):
return 2
def data(self, column):
if self.person == None:
if column == 0:
return QtCore.QVariant(self.header)
if column == 1:
return QtCore.QVariant("")
else:
if column == 0:
return QtCore.QVariant(self.person.sname)
if column == 1:
return QtCore.QVariant(self.person.fname)
return QtCore.QVariant()
def parent(self):
return self.parentItem
def row(self):
if self.parentItem:
return self.parentItem.childItems.index(self)
return 0
class treeModel(QtCore.QAbstractItemModel):
def init(self, parent=None):
super(treeModel, self).init(parent)
self.people = []
for fname, sname, isMale in (("John","Brown", 1),
("Fred", "Bloggs", 1), ("Sue", "Smith", 0)):
person = person_class(sname, fname, isMale)
self.people.append(person)
self.rootItem = TreeItem(None, "ALL", None)
self.parents = {0 : self.rootItem}
self.setupModelData()
def columnCount(self, parent=None):
if parent and parent.isValid():
return parent.internalPointer().columnCount()
else:
return len(HORIZONTAL_HEADERS)
def data(self, index, role):
if not index.isValid():
return QtCore.QVariant()
item = index.internalPointer()
if role == QtCore.Qt.DisplayRole:
return item.data(index.column())
if role == QtCore.Qt.UserRole:
if item:
return item.person
if role == QtCore.Qt.BackgroundRole :
return QtGui.QColor('pink')
return QtCore.QVariant()
#def headerData(self, column, orientation, role):
#if (orientation == QtCore.Qt.Horizontal and
#role == QtCore.Qt.DisplayRole):
#try:
#return QtCore.QVariant(HORIZONTAL_HEADERS[column])
#except IndexError:
#pass
#return QtCore.QVariant()
def index(self, row, column, parent):
if not self.hasIndex(row, column, parent):
return QtCore.QModelIndex()
if not parent.isValid():
parentItem = self.rootItem
else:
parentItem = parent.internalPointer()
childItem = parentItem.child(row)
if childItem:
return self.createIndex(row, column, childItem)
else:
return QtCore.QModelIndex()
def parent(self, index):
if not index.isValid():
return QtCore.QModelIndex()
childItem = index.internalPointer()
if not childItem:
return QtCore.QModelIndex()
parentItem = childItem.parent()
if parentItem == self.rootItem:
return QtCore.QModelIndex()
return self.createIndex(parentItem.row(), 0, parentItem)
def rowCount(self, parent=QtCore.QModelIndex()):
if parent.column() > 0:
return 0
if not parent.isValid():
p_Item = self.rootItem
else:
p_Item = parent.internalPointer()
return p_Item.childCount()
def setupModelData(self):
for person in self.people:
if person.isMale:
sex = "MALES"
else:
sex = "FEMALES"
if not self.parents.has_key(sex):
newparent = TreeItem(None, sex, self.rootItem)
self.rootItem.appendChild(newparent)
self.parents[sex] = newparent
parentItem = self.parents[sex]
newItem = TreeItem(person, "", parentItem)
parentItem.appendChild(newItem)
if name == "main":
app = QtGui.QApplication([])
model = treeModel()
dialog = QtGui.QDialog()
dialog.setMinimumSize(300,150)
layout = QtGui.QVBoxLayout(dialog)
tv = QtGui.QTreeView(dialog)
tv.setModel(model)
layout.addWidget(tv)
dialog.exec_()
app.closeAllWindows()