How do I display images in QListView of size of standard thumbnail size like 250 x 200 , and file nametext should wrap to next line , right now the images displayed are very small and are not positioned under each other in proper row column order.

Qt Code: 
  1. import sys
  2. import os
  3.  
  4. from PyQt4 import QtGui, QtCore
  5.  
  6. class MyListModel(QtCore.QAbstractListModel): 
  7.     def __init__(self, datain, parent=None, *args): 
  8.         """ datain: a list where each item is a row
  9.         """
  10.         QtCore.QAbstractListModel.__init__(self, parent, *args) 
  11.         self.listdata = datain
  12.  
  13.     def rowCount(self, parent=QtCore.QModelIndex()): 
  14.         return len(self.listdata) 
  15.  
  16.     def data(self, index, role):
  17.         s = QtCore.QSize(250, 200)
  18.         if index.isValid() and role == QtCore.Qt.DecorationRole:
  19.             return QtGui.QIcon(QtGui.QPixmap(self.listdata[index.row()]).scaled(s))
  20.         if index.isValid() and role == QtCore.Qt.DisplayRole:
  21.             return QtCore.QVariant(os.path.splitext(os.path.split(self.listdata[index.row()])[-1])[0])
  22.         else: 
  23.             return QtCore.QVariant()
  24.  
  25. class MyListView(QtGui.QListView):
  26.     """docstring for MyListView"""
  27.     def __init__(self):
  28.         super(MyListView, self).__init__()
  29.         # show in Icon Mode
  30.         self.setViewMode(QtGui.QListView.IconMode)
  31.         crntDir = "/Users/userName/Pictures/"
  32.         # create table
  33.         list_data = []
  34.         philes = os.listdir(crntDir)
  35.         for phile in philes:
  36.             if phile.endswith(".png") or phile.endswith("jpg"):
  37.                 list_data.append(os.path.join(crntDir, phile))
  38.         lm = MyListModel(list_data, self)
  39.         self.setModel(lm)
  40.         self.show()
  41.  
  42. if __name__ == '__main__':
  43.     app = QtGui.QApplication(sys.argv)
  44.     window =  MyListView()
  45.     window.show()
  46.     window.raise_()
  47.     sys.exit(app.exec_())
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