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