Gtk2::Ex::GraphViz - A Gtk2 wrapper to the GraphViz.pm module.

GraphViz can be used to produce good-looking network graphs. Wrapping with Gtk2 allows those images to respond to events such as mouse-over, clicked etc.

By implementing callbacks to the respective signals, you can create fairly interactive network graphs. For example, when the user double-clicks a node, you can open up a widget that contains information on that node.

	use GraphViz;
	use Gtk2::Ex::GraphViz;
	my $g = GraphViz->new; # First do all the work in GraphViz.pm
	$g->add_node('London', shape => 'box', fillcolor =>'lightblue', style =>'filled',);
	$g->add_node('Paris', label => 'City of\nlurve', );
	$g->add_edge('London' => 'Paris');
	# Now the actual Gtk2::Ex::GraphViz portion takes over
	my $graphviz = Gtk2::Ex::GraphViz->new($g);
	$graphviz->signal_connect ('mouse-enter-node' => 
		sub {
			my ($self, $x, $y, $nodename) = @_;
			my $nodetitle = $graphviz->{svgdata}->{g}->{g}->{$nodename}->{title};
			print "Node : $nodetitle : $x, $y\n";
		}
	);

The constructor accepts a GraphViz object as the first argument.

	my $g = GraphViz->new; # First do all the work in GraphViz.pm
	my $graphviz = Gtk2::Ex::GraphViz->new($g);

Returns the widget that can be added to any container and presented in a window.

See the SIGNALS section to see the supported signals.

GraphViz

Copyright 2005 Ofey Aikon, All Rights Reserved.

This library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more details.

You should have received a copy of the GNU Library General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307 USA.