[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
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> 

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!