BF: Use relative paths for resource files

Author: Todd

psychopy/app/builder/dialogs/__init__.py

@@ -155,7 +155,8 @@ def __init__(self, dlg, label, param, parent, fieldName,
         elif param.valType == 'fileList':
             self.valueCtrl = FileListCtrl(parent,
                                           choices=param.val,
-                                          size=wx.Size(self.valueWidth, 100)
+                                          size=wx.Size(self.valueWidth, 100),
+                                          pathtype="rel"
                                           )
         elif len(param.allowedVals) > 1:
             # there are limited options - use a Choice control
@@ -1932,9 +1933,10 @@ def show(self):
         return wx.ID_OK
 
 class FileListCtrl(wx.ListBox):
-    def __init__(self, parent, choices=[], size=None):
+    def __init__(self, parent, choices=[], size=None, pathtype="rel"):
         wx.ListBox.__init__(self)
         parent.Bind(wx.EVT_DROP_FILES, self.addItem)
+        self.app = parent.app
         if type(choices) == str:
             choices = data.utils.listFromString(choices)
         self.Create(id=wx.ID_ANY, parent=parent, choices=choices, size=size, style=wx.LB_EXTENDED | wx.LB_HSCROLL)
@@ -1956,8 +1958,12 @@ def addItem(self, event):
                                 wildcard=_translate(_wld))
             if dlg.ShowModal() != wx.ID_OK:
                 return 0
-            filename = dlg.GetPaths()
-            self.InsertItems(filename, 0)
+            filenames = dlg.GetPaths()
+            relname = []
+            for filename in filenames:
+                relname.append(
+                    os.path.relpath(filename, self.GetTopLevelParent().frame.filename))
+            self.InsertItems(relname, 0)
         else:
             fileList = event.GetFiles()
             for filename in fileList: