I'm trying to display files and folders like column view in Mac finder. See Image. Screen Shot 2017-02-07 at 6.00.16 pm.png
I was able get the basic structure with the help of ListViews and QFileSystemModel. Then when I set the splitter handle as a corner widget for the scroll area, I encounter two issues here
  • When I resize the listview, the splitter handle disappears.
  • Even after setting the splitter handle width to 0, I see spacing between listviews.

Please refer the code below
Qt Code: 
  1. # -*- coding: utf-8 -*-
  2.  
  3. from PyQt4 import QtCore, QtGui
  4. import os
  5.  
  6. try:
  7.     _fromUtf8 = QtCore.QString.fromUtf8
  8. except AttributeError:
  9.     def _fromUtf8(s):
  10.         return s
  11.  
  12. try:
  13.     _encoding = QtGui.QApplication.UnicodeUTF8
  14.     def _translate(context, text, disambig):
  15.         return QtGui.QApplication.translate(context, text, disambig, _encoding)
  16. except AttributeError:
  17.     def _translate(context, text, disambig):
  18.         return QtGui.QApplication.translate(context, text, disambig)
  19.  
  20. class PopulateList(QtGui.QDialog):
  21.     def __init__(self,parent=None):
  22.         super().__init__(parent)
  23.         self.ui = Ui_Form()
  24.         self.ui.setupUi(self)
  25.         self.setModel()
  26.         self.show()
  27.  
  28.         self.ui.splitter.setHandleWidth(0)#not working
  29.         self.ui.listView.setVerticalScrollBarPolicy(QtCore.Qt.ScrollBarAlwaysOn)
  30.         self.ui.listView.setCornerWidget(self.getCornerWidget(self.ui.splitter))
  31.  
  32.         self.ui.closePushButton.clicked.connect(self.close)
  33.         self.ui.listView.clicked.connect(self.showSubFiles)
  34.  
  35.     def getCornerWidget(self, splitter):
  36.         self.handle=splitter.handle(1)
  37.         layout=QtGui.QHBoxLayout(self.handle)
  38.         layout.setSpacing(0)
  39.         layout.setMargin(0)
  40.  
  41.         for i in range(0,2):
  42.             line = QtGui.QFrame(self.handle)
  43.             line.setFrameShape(QtGui.QFrame.VLine)
  44.             layout.addWidget(line)
  45.  
  46.         return self.handle
  47.  
  48.     def showSubFiles(self, index):
  49.         root_path = self.model.fileInfo(index).absoluteFilePath()
  50.         self.model1=QtGui.QFileSystemModel()
  51.         self.model1.setRootPath(root_path)
  52.         self.ui.listView_1.setModel(self.model1)
  53.         self.ui.listView_1.setRootIndex(self.model1.index(root_path))
  54.  
  55.     def setModel(self):
  56.         root_path=os.path.expanduser("~")
  57.         self.model=QtGui.QFileSystemModel()
  58.         self.model.setRootPath(root_path)
  59.         self.model.setFilter(QtCore.QDir.NoDotAndDotDot | QtCore.QDir.Dirs)
  60.         self.ui.listView.setModel(self.model)
  61.         self.ui.listView.setRootIndex(self.model.index(root_path))
  62.  
  63. class Ui_Form(object):
  64.     def setupUi(self, Form):
  65.         Form.setObjectName(_fromUtf8("Form"))
  66.         Form.resize(602, 365)
  67.         self.verticalLayout = QtGui.QVBoxLayout(Form)
  68.         self.verticalLayout.setObjectName(_fromUtf8("verticalLayout"))
  69.         self.splitter = QtGui.QSplitter(Form)
  70.         self.splitter.setOrientation(QtCore.Qt.Horizontal)
  71.         self.splitter.setObjectName(_fromUtf8("splitter"))
  72.         self.listView = QtGui.QListView(self.splitter)
  73.         self.listView.setObjectName(_fromUtf8("listView"))
  74.         self.listView_1 = QtGui.QListView(self.splitter)
  75.         self.listView_1.setObjectName(_fromUtf8("listView_1"))
  76.         self.verticalLayout.addWidget(self.splitter)
  77.         self.horizontalLayout = QtGui.QHBoxLayout()
  78.         self.horizontalLayout.setObjectName(_fromUtf8("horizontalLayout"))
  79.         spacerItem = QtGui.QSpacerItem(40, 20, QtGui.QSizePolicy.Expanding, QtGui.QSizePolicy.Minimum)
  80.         self.horizontalLayout.addItem(spacerItem)
  81.         self.closePushButton = QtGui.QPushButton(Form)
  82.         self.closePushButton.setObjectName(_fromUtf8("closePushButton"))
  83.         self.horizontalLayout.addWidget(self.closePushButton)
  84.         self.verticalLayout.addLayout(self.horizontalLayout)
  85.         self.verticalLayout.setStretch(0, 1)
  86.  
  87.         self.retranslateUi(Form)
  88.         QtCore.QMetaObject.connectSlotsByName(Form)
  89.  
  90.     def retranslateUi(self, Form):
  91.         Form.setWindowTitle(_translate("Form", "Form", None))
  92.         self.closePushButton.setText(_translate("Form", "Close", None))
  93.  
  94.  
  95. if __name__ == "__main__":
  96.     import sys
  97.     app = QtGui.QApplication(sys.argv)
  98.     listView=PopulateList()
  99.     sys.exit(app.exec_())
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