Description:

It differs from the GNOME canvas in that it has a different
approach. First the primitives used are the classicals like
point, line, rectangle... and groups, but it also has three
other non classical primitives that are connection point,
attract point and attracted point.
They are used to connect groups and set the snap system.
More over, dia-newcanvas has a model/view split. One DiaCanvas
can have multiple DiaCanvasViews. The API for using DiaCanvas
is quite similar to that of GnomeCanvas, as can be seen in the
simple test-diacanvas.c example program.