the latest cellrenderer scoop

[muppet <scott asofyet org>]

i just put Gtk2::CellRenderer::Base 0.04 on my website,
http://asofyet.org/muppet/software/gtk2-perl/Gtk2-CellRenderer-Base- 
0.04.tar.gz

this version simplifies things rather a lot.  The  
Gtk2::CellRenderer::Base class no longer actually exists.  You do a  
normal Glib::Object::Subclass of Gtk2::CellRenderer or any of its  
derivatives, and then call __PACKAGE__->_install_overrides;  this  
installs into the GObjectClass structure the perl marshallers which  
look for the on_get_size, on_render, on_activate, and on_start_editing  
subs.

you can call the parent from within your child subs by doing parent_foo  
instead of on_foo, like this:

  sub on_get_size {  shift->parent_get_size (@_)  }

that uses caller() to find the calling context, so it can find the  
parent of that package.  (this hack is necessary because GObjects  
always show up as the bottom of the hierarchy.)


my only complaint about this version is the new syntax is ugly:

  use Glib::Object::Subclass ......;
  __PACKAGE__->_install_overrides;

it would be possible to create another pragma-like module to wrap that  
up for us, a la Glib::Object::Subclass, but i hesitate to do this  
because it most likely would entail duplicating Subclass.pm.

on the plus side, this is all self-contained -- everything is  
implemented in Base.xs, and could easily be dropped into  
Gtk2/xs/GtkCellRenderer.xs without any problems.


whatchoo think?

--
muppet <scott at asofyet dot org>