Re: cell word wrapping

[muppet <scott asofyet org>]

On Jan 19, 2005, at 11:17 PM, Kevin C. Krinke wrote:

> Is there a way to set a Gtk2::CellRendererText to word-wrap it's 
> contents?

Put newlines in the text strings.

*cough*


> I've been trying with Gtk2::Pango::Layouts but can't figure out how to 
> apply them to a cellrenderer.

GtkCellRendererText creates and initializes a new PangoLayout every 
time it needs to calculate the size of a cell or draw a cell.  It's 
also private, so you can't get a handle to it.

Create your own cell renderer and you can do whatever you want with 
your layouts.  If you let the renderer wrap, then you'll need some 
"interesting" logic for choosing a size when the column is in autosize 
mode.  My memory may be fuzzy, but i seem to recall learning while 
writing Mup::CellRendererMultiline in Gtk2/examples/customrenderer.pl 
that there are deficiencies in the TreeView design that make it 
impossible to write a cellrenderer that can change size while editing.  
(I wanted to have a Mac Aqua-style multi-line editable cell in 
Torsten's odot...)


> I've also run into the problem of not being able to find any practical 
> help regarding Gtk2::Pango::AttrList. I can get an AttrList from 
> $cell->get_property( 'attributes' ) but what can I do with it? If I 
> try any methods on it I get the "can't call method on an undefined 
> value" even though a Dumper() reveals a blessed Gtk2::Pango::AttrList.

It would appear that you have stumbled into one of the back corners of 
the API that we don't have bound.  A PangoAttrList is what Pango markup 
gets parsed into; it's a collection object for PangoAttrs, and, well, 
we never bound it, probably because it seemed pretty esoteric.

If you find you need this, we'll get it on the todo list.  If the job 
isn't too big and we can get it tested quickly, we may be able to make 
an API freeze break.  Otherwise, it will have to wait for 1.10x.  :-(


--
She's obviously your child.  She looks like you, she talks a lot, and 
most of it is gibberish.
  -- Elysse, to me, of Zella.