Application for diagram rendering based on Clutter

[Козлов Кирилл <admin sdusi ru>]

Hello,

I need to develop an application with an area for rendering diagrams. In the area there will be objects which 
can be connected via lines, can be moved, deleted (like it's done in Dia, for example).
Please give me an advice on what modern GTK+ 3 and Clutter objects should be used to implement this 
functionality (design area, the grid, drawing object, markers for changing size of an object). Any help or 
shared experience will be appreciated.

Best regards,
Kirill Kozlov