First pass at incorporating the efabless LVS manager GUI into the

netgen distribution.  It sort of works, but not quite there yet.

python/consoletext.py

@@ -0,0 +1,54 @@
+#!/bin/env python3
+#
+#--------------------------------------------------------
+"""
+  consoletext --- extends tkinter class Text
+  with stdout and stderr redirection.
+"""
+#--------------------------------------------------------
+# Written by Tim Edwards
+# efabless, inc.
+# September 11, 2016
+# Version 0.1
+#--------------------------------------------------------
+
+import sys
+import tkinter
+
+class ConsoleText(tkinter.Text):
+    linelimit = 500
+    class IORedirector(object):
+        '''A general class for redirecting I/O to this Text widget.'''
+        def __init__(self,text_area):
+            self.text_area = text_area
+
+    class StdoutRedirector(IORedirector):
+        '''A class for redirecting stdout to this Text widget.'''
+        def write(self,str):
+            self.text_area.write(str,False)
+
+    class StderrRedirector(IORedirector):
+        '''A class for redirecting stderr to this Text widget.'''
+        def write(self,str):
+            self.text_area.write(str,True)
+
+    def __init__(self, master=None, cnf={}, **kw):
+        '''See the __init__ for Tkinter.Text.'''
+
+        tkinter.Text.__init__(self, master, cnf, **kw)
+
+        self.tag_configure('stdout',background='white',foreground='black')
+        self.tag_configure('stderr',background='white',foreground='red')
+        # None of these works!  Cannot change selected text background!
+        self.config(selectbackground='blue', selectforeground='white')
+        self.tag_configure('sel',background='blue',foreground='white')
+
+    def write(self, val, is_stderr=False):
+        lines = int(self.index('end-1c').split('.')[0])
+        if lines > self.linelimit:
+            self.delete('1.0', str(lines - self.linelimit) + '.0')
+        self.insert('end',val,'stderr' if is_stderr else 'stdout')
+        self.see('end')
+
+    def limit(self, val):
+        self.linelimit = val