From: oxman <no@...>
Date: 2005-01-16T04:16:10+09:00
Subject: Re: ruby-gnome2 : problem with signal "insert-text"

I prefer a more generic way, such as :
buffer.signal_connect_after('insert-text') do |a,iter,text,length|
         color(buffer, iter)
end

def color (buffer, iter)
         first_char = iter
         first_char.offset -= iter.line_offset
         last_char = buffer.get_iter_at_offset(first_char.offset)
         last_char.forward_to_line_end
         line_text = first_char.get_visible_text(last_char)
         f = File.open("ruby.color")
         f.each_line do |pattern|
                 pattern.strip!
                 if (match = Regexp.new(pattern).match(line_text))
                         length = match.pre_match.length
                         start_iter = 
buffer.get_iter_at_offset(first_char.offset + length)
                         length = match.post_match.length
                         end_iter = 
buffer.get_iter_at_offset(last_char.offset - length)
                         2.times 
{buffer.apply_tag(buffer.tag_table.lookup("blue"), start_iter, end_iter)}
                 end
         end
end


sentinel% cat ruby.color
#.+$
if
else



Joao Pedrosa wrote:
> Hi,
> 
> On Sun, 16 Jan 2005 03:21:10 +0900, oxman <no@in-your-dream.net> wrote:
> 
>>This :
>>        2.times{
>>          buffer.apply_tag(buffer.tag_table.lookup("blue"), iter,
>>limit_iter)
>>        }
>>
>>Perfect.
>>Thanks :)
> 
> 
> No problem. :-)
> 
> I just created another one, a little better:
> 
> require 'gtk2'
> Gtk.init
> window = Gtk::Window.new
> window.signal_connect("destroy") { Gtk.main_quit }
> textviewer = Gtk::TextView.new
> window.add(textviewer)
> window.set_default_size(600,400)
> window.show_all
> buffer = textviewer.buffer
> buffer.create_tag("blue", {"foreground" => "blue"})
> buffer.signal_connect_after('insert-text') do |a,iter,text,length|
>   orig_iter = buffer.get_iter_at_offset(iter.offset - 1)
>   iter.forward_to_line_end
>   limit_iter = buffer.get_iter_at_offset(iter.offset)
>   iter.line_offset = 0
>   iter.offset = iter.offset - 1
>   if a = iter.forward_search('#', Gtk::TextIter::SEARCH_TEXT_ONLY,
> limit_iter) or text == '#'
>     if a
>       iter, = a 
>     else
>       iter = orig_iter
>     end
>     2.times{
>       buffer.apply_tag(buffer.tag_table.lookup("blue"), iter, limit_iter)
>     }
>   end
> end
> Gtk.main
> 
> Cheers,
> Joao
> 
>