[pygtk] Re: A Timer and refreshing TextView

[Mark Stahler]

John Finlay wrote:

Nathaniel Smith wrote:

On Sun, Dec 02, 2007 at 09:34:40PM -0800, Aravind Vijayakumar wrote:
 

Since you are opening the file afresh each time in refreshLog, won't
you be reading the first line each time? 


The .read() method in Python reads the whole file, not just the first
line.

  
read() will also read from the current position so you can keep reading 
as new data is added. An alternative is to not open the file in 
refreshLog but when initializing and then read it in refreshLog which is 
called by timeout_add - something like:


Code:

  textview = self.gui.get_widget("bottom_textview")
  # Methods that need to be run on start
  file = open('log.txt')
  self.refreshLog()
  # Timer to autorefresh log
  timer = gobject.timeout_add(500, self.refreshLog)
  timer.start()

  def refreshLog(self):
 string = file.read()
 if string:
 buffer = textview.get_buffer()
 mark = buffer.create_mark("end", buffer.get_end_iter())
 textview.scroll_to_mark(mark, 0)
 buffer.insert_at_cursor(string)
 buffer.delete_mark_by_name("end")
 return True

John
___
pygtk mailing list   pygtk@daa.com.au
http://www.daa.com.au/mailman/listinfo/pygtk
Read the PyGTK FAQ: http://www.async.com.br/faq/pygtk/



Thank you all for the replies. I was not aware of the problems with the 
threading in GTK+.


I got it working perfectly using the gobject timeout with Johns modified 
routine. I now only have to insert new text from the log and dont have 
to reread the whole thing.


Thanks!

___
pygtk mailing list   pygtk@daa.com.au
http://www.daa.com.au/mailman/listinfo/pygtk
Read the PyGTK FAQ: http://www.async.com.br/faq/pygtk/

[pygtk] A Timer and refreshing TextView

[Mark Stahler]

Hello,

I am attempting to have a textview tail the end of a log file. So far I 
can load the log and scroll to the end however I am running into a 
problem have the log file refresh.


Code:

   textview = self.gui.get_widget("bottom_textview")
  
   # Methods that need to be run on start

   self.refreshLog()
  
   # Timer to autorefresh log

   timer = threading.Timer(10, self.refreshLog)
   timer.start()

   def refreshLog(self):
   file = open('log.txt')
   string = file.read()
  
   buffer = textview.get_buffer()

   buffer.set_text(string)

   mark = buffer.create_mark("end", buffer.get_end_iter())

   textview.scroll_to_mark(mark, 0)
   buffer.delete_mark_by_name("end")

The code seems to run ok but the text in the TextView does not update. I 
loaded the log into vi and appended some text and saved it but the 
program would not reload it. Am I overlooking something simple? Is there 
another way to do the timer? Thanks for the help!


Mark
___
pygtk mailing list   pygtk@daa.com.au
http://www.daa.com.au/mailman/listinfo/pygtk
Read the PyGTK FAQ: http://www.async.com.br/faq/pygtk/

[pygtk] Textview to Tail a log file

[Mark Stahler]

Hi,

I am new to GTK+ so please go easy on me. I am puzzled as to why my 
simple function is not working:


def refreshLog(self):
   file = open('log.txt')
   string = file.read()
  
   textview = self.gui.get_widget("bottom_textview")

   textbuffer = textview.get_buffer()
   textbuffer.set_text(string)
  
   iter = textbuffer.get_end_iter()

   iter.forward_to_end()
   print iter.is_end()
   print textview.scroll_to_iter(iter, 0, True) 



is_end returns true so I know my iterator is at the end of the text file 
yep scroll_to_iter returns false and does not scroll at all. What is 
wrong? Could it be something in my glade file? The rest of the gui 
works. Thanks



Mark
___
pygtk mailing list   pygtk@daa.com.au
http://www.daa.com.au/mailman/listinfo/pygtk
Read the PyGTK FAQ: http://www.async.com.br/faq/pygtk/