Re: 4 TextBuffer questions

[Benoît Touron <b touron citb bull net>]

Thanks for your answer Marco.

> > I am using a TextView/TextBuffer to display text with color.
> > How can I copy a substring of my TextBuffer into another TextBuffer, 
> > keeping the original colors ?
> > The result of the get_text method does not seem to contain 
> > informations about the tags.
>
>
> iterator Gtk::TextBuffer::insert  ( const iterator&  pos,  const 
> iterator& range_begin,  const iterator&  range_end )
> Copies text, tags, and pixbufs between range_start and range_end and 
> inserts the copy at pos.
> If range_start and range_end are in a different buffer from pos then the 
> two buffers must share the same tag table.

Perfect. I will try this ASAP. What do you mean by "share the same tag 
table" ? If destination and source buffers have tags with the same name, 
but in different tag tables, is it enough (I guess not) ?

> > Another question: How can I add an antry to the default context menu 
> > of the TextView (cut/paste/...). I need to add specific actions when 
> > the user right-clicks in the TextView.
>
> Overide virtual void Gtk::TextView::on_populate_popup  (Menu*  menu)
> but that's just a guess, never tried that myself.

Seems a good idea. I should have found it myself in the doc...

> > Third : how can I add a bar on the left side of a TextView, to display 
> > additionnal informations (like bookmarks) ?
>
>
> place any widget next to the textview that you find suitable to display 
> that info. (maybe a treeview).

I expected that it was built in the TextView widget. If I have to manage 
it myself, as you suggest, this could be a pain. I need to update the 
bar each time the TextBuffer is modified.
Is it an easier way ?

> > Last (but not least) : How can I highlight the current line ? I could 
> > apply a tag with the background color set to yellow, but only the 
> > characters would be highlighted. The background behind the text would 
> > remain white, which would not look very nice.
>
>
> As i understand you want to highlight the line over the full width of 
> the textview even if the text on that line is not the full width?, i'm 
> not sure if that is possible, maybe you should use the treeview widget 
> instead.

You're right. Is the TreeView as fast as the TextView ? My app displays 
scrolling text (traces), and it can be pretty verbose...

Thanks a lot. It really helped.
Ben