This class diagram describes the basic layout of Gaphas.
The central class is GtkView. It takes a model. A default implementation is provided by gaphas.Canvas. A view is rendered by Painters. Interaction is handled by Tools.
Painting is done by painters. Each painter will paint a layer of the canvas.
Besides the view, there is constraint based connection management. Constraints can be used within an item, and to connect different items.
A default model and item implementations, a line and an element.
