libgnome2-canvas-perl
the gnome canvas widget is a powerful and extensible object-oriented display engine. a gnomecanvasitem is a gtkobject representing some element of the display, such as an image, a rectangle, an ellipse, or some text. you can refer to this architecture as structured graphics; the canvas lets you deal with graphics in terms of items, rather than an undifferentiated grid of pixels.
find out more about gnome at http://www.gnome.org.
the perl bindings follow the c api very closely, and the c reference documentation should be considered the canonical source: http://developer.gnome.org/doc/api/2.0/libgnomecanvas/index.html
this module is part of gtk2-perl.
to discuss gtk2-perl, ask questions and flame/praise the authors, join gtk-perl-list@gnome.org at lists.gnome.org.
also have a look at the gtk2-perl website and sourceforge project page, http://gtk2-perl.sourceforge.net