Tkinter <<Modified>> and bindtags ordering

[bytecolor]

I'm trying to extract the text of the current line on the <<Modified>>
event.
It doesnt work if I delete a character. If I type 'abc' I get 'abc' in
text_changed().
If I hit backspace I still get 'abc'. Backspace once more, I get 'ab'.
So the
callback is called before the text is changed. But only on a delete.
Someone told me it has to do with bindtags ordering. I've read what
docs I can
find on the subject, but I cant figure out why it's not working. Maybe
I should
learn a bit of Tcl, eh?

import Tkinter as tk

def text_changed(ev t):
global changing
if changing: return
changing = True
line, col = t.index('insert ').split('.')
txt = t.get('%s.0' % line, '%s.end' % line)
print '|%s|' % txt
t.tk.call(t._w, 'edit', 'modified', 0)
changing = False

changing = False
root = tk.Tk()
t = tk.Text(master= root)
t.pack()
t.focus_set()
t.tk.call(t._w, 'edit', 'modified', 0)
t.bind('<<Modif ied>>', text_changed)
root.mainloop()

--
bytecolor

[Rob Wolfe]

Re: Tkinter &lt;&lt;Modifie d&gt;&gt; and bindtags ordering


bytecolor wrote:

[...]

changing = False
root = tk.Tk()
t = tk.Text(master= root)
t.pack()
t.focus_set()
t.tk.call(t._w, 'edit', 'modified', 0)

What about instead of:

t.bind('<<Modif ied>>', text_changed)

this event:

t.bind('<KeyRel ease>', text_changed)

root.mainloop()

--
HTH,
Rob

[bytecolor]

Re: Tkinter &lt;&lt;Modifie d&gt;&gt; and bindtags ordering

On Apr 3, 3:16 am, "Rob Wolfe" <r...@smsnet.pl wrote:

What about instead of:
>

t.bind('<<Modif ied>>', text_changed)

>
this event:
>
t.bind('<KeyRel ease>', text_changed)
>

root.mainloop()

>
--
HTH,
Rob

Hey Rob,
I actually started with that event, until I came across the modified
event. I'm working on syntax highlighting. So I need any text change.
Also, colorizing on a key release is annoyingly noticeable to the
user. I tried it :)

I'm sure there are going to be other perils along the way as this is
my first attempt at syntax highlighing. I can load a file and the
highlighting works very well. I used an elaborate regex with named
groups and re.finditer(). I either use the names directly as edit
tags, or they help me look up other tags in a dict. It's quite fast.

screenshot with random (ugly) colors:

http://bytecolor.homelinux.org/~bytecolor/vapt_colorizing.png

That part wasn't bad at all. Now I need to code the text change
logistics but this bindtags ordering has got me perplexed.

--
bytecolor

[Rob Wolfe]

Re: Tkinter &lt;&lt;Modifie d&gt;&gt; and bindtags ordering


bytecolor wrote:

Hey Rob,
I actually started with that event, until I came across the modified
event. I'm working on syntax highlighting. So I need any text change.
Also, colorizing on a key release is annoyingly noticeable to the
user. I tried it :)
>
I'm sure there are going to be other perils along the way as this is
my first attempt at syntax highlighing. I can load a file and the
highlighting works very well. I used an elaborate regex with named
groups and re.finditer(). I either use the names directly as edit
tags, or they help me look up other tags in a dict. It's quite fast.
>
screenshot with random (ugly) colors:

http://bytecolor.homelinux.org/~bytecolor/vapt_colorizing.png

>
That part wasn't bad at all. Now I need to code the text change
logistics but this bindtags ordering has got me perplexed.

Have you looked at ColorDelegator. py from idlelib?
There has been done such a syntax highlighting based on Tkinter.Text.

--
HTH,
Rob

[bytecolor]

Re: Tkinter &lt;&lt;Modifie d&gt;&gt; and bindtags ordering

On Apr 3, 5:48 am, "Rob Wolfe" <r...@smsnet.pl wrote:

Have you looked at ColorDelegator. py from idlelib?
There has been done such a syntax highlighting based on Tkinter.Text.
>
--
HTH,
Rob

I've been poking around it a bit. I actually use the tabpage module in
my app. Guess I should take a harder look at it. Nice bit of software.

--
bytecolor