|graph-pasteboard-mixin : (class? . -> . class?)|
|→ (is-a?/c graph-pasteboard-mixin)|
|edge-labels? : boolean? = #t|
|edge-label-font : (or/c #f (is-a?/c font%)) = #f|
If edge-labels? is #f, no edge labels are drawn. Otherwise, they are.
If edge-label-font is supplied, it is used when drawing the labels on the edges. Otherwise, the font is not set before drawing the labels, defaulting to the dc<%> object’s font.
This mixin overrides many methods to draw lines between graph-snip<%> that it contains.