I want to display images of specific thumbnail and column height width to fit accordingly keeping the text i.e. the filename underneath the image.

Qt Code: 
  1. import sys
  2. import os
  3.  
  4. from PyQt4 import QtGui, QtCore
  5.  
  6. class MyListModel(QtCore.QAbstractTableModel): 
  7. 	def __init__(self, datain, col ,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. 		self._col = col
  13.  
  14.  
  15. 	def colData(self, section, orientation, role):
  16. 		if role == QtCore.Qt.DisplayRole:
  17. 			if orientation == QtCore.Qt.Horizontal:
  18. 				return QtCore.QString("Images")
  19. 			else:
  20. 				return QtCore.QString(os.path.splitext(self._listdata[section])[-1][1:].upper())
  21.  
  22. 	def rowCount(self, parent=QtCore.QModelIndex()): 
  23. 		return len(self._listdata) 
  24.  
  25. 	def columnCount(self, parent):
  26. 		return self._col
  27.  
  28. 	def data(self, index, role):
  29.  
  30. 		if role == QtCore.Qt.EditRole:
  31. 			row = index.row()
  32. 			column = index.column()
  33. 			fileName = os.path.split(self._listdata[row][column])[-1]
  34. 			return fileName
  35.  
  36. 		if role == QtCore.Qt.ToolTipRole:
  37. 			row = index.row()
  38. 			column = index.column()
  39. 			fileName = os.path.split(self._listdata[row][column])[-1]
  40. 			return QtCore.QString(fileName)
  41.  
  42. 		if index.isValid() and role == QtCore.Qt.DecorationRole:
  43. 			row = index.row()
  44. 			column = index.column()
  45. 			value = self._listdata[row][column]
  46. 			pixmap = QtGui.QPixmap()
  47. 			# pixmap.scaled(400,300, QtCore.Qt.KeepAspectRatio)
  48. 			pixmap.load(value)
  49. 			return QtGui.QImage(pixmap).scaled(120,100)
  50.  
  51. 		if index.isValid() and role == QtCore.Qt.DisplayRole:
  52. 			row = index.row()
  53. 			column = index.column()
  54. 			value = self._listdata[row][column]
  55. 			fileName = os.path.split(value)[-1]
  56. 			return os.path.splitext(fileName)[0]
  57.  
  58. 	def flags(self, index):
  59. 		return QtCore.Qt.ItemIsEditable | QtCore.Qt.ItemIsEnabled | QtCore.Qt.ItemIsSelectable
  60.  
  61. 	def setData(self, index, value, role=QtCore.Qt.EditRole):
  62. 		if role == QtCore.Qt.EditRole:
  63. 			row = index.row()
  64. 			column = index.column()
  65. 			newName = os.path.join(str(os.path.split(self._listdata[row][column])[0]), str(value.toString()))
  66. 			self.__renameFile(self._listdata[row][column], newName)
  67. 			self._listdata[row][column] = newName
  68. 			self.dataChanged.emit(index, index)
  69. 			return True
  70. 		return False
  71.  
  72. 	def __renameFile(self, fileToRename, newName):
  73. 		try:
  74. 			os.rename(str(fileToRename), newName)
  75. 		except Exception, err:
  76. 			print err
  77.  
  78.  
  79. class MyTableView(QtGui.QTableView):
  80. 	"""docstring for MyTableView"""
  81. 	def __init__(self):
  82. 		super(MyTableView, self).__init__()
  83.  
  84. 		sw = QtGui.QDesktopWidget().screenGeometry(self).width()
  85. 		sh = QtGui.QDesktopWidget().screenGeometry(self).height()
  86. 		self.resize(sw, sh)
  87.  
  88. 		thumbWidth = 100
  89. 		thumbheight = 120
  90.  
  91. 		col = sw/thumbWidth
  92. 		self.setColumnWidth(thumbWidth, thumbheight)
  93. 		crntDir = "/Users/krystosan/Pictures"
  94. 		# create table
  95. 		list_data = []
  96. 		philes = os.listdir(crntDir)
  97. 		for phile in philes:
  98. 			if phile.endswith(".png") or phile.endswith("jpg"):
  99. 				list_data.append(os.path.join(crntDir, phile))
  100. 		_twoDLst = convertToTwoDList(list_data, col)
  101. 		lm = MyListModel(_twoDLst, col, self)
  102. 		self.setModel(lm)
  103. 		self.show()
  104.  
  105. def convertToTwoDList(l, n):
  106. 	return [l[i:i+n] for i in range(0, len(l), n)]
  107.  
  108. if __name__ == '__main__':
  109. 	app = QtGui.QApplication(sys.argv)
  110. 	window =  MyTableView()
  111. 	window.show()
  112. 	window.raise_()
  113. 	sys.exit(app.exec_())
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and I don't understand why resizing the window or changing column height width is happening very slow.