Can we generate a minimap?

[iyobo]

See title. A minimap is a way to show the birdseye view of a graph in a small box. Very useful with lots of nodes.

[atlasan]

The editor demo includes a button "Multiview" that shows how to deal with multi-canvas for the same graph (amazing), the minimap is almost done, if the second canvas is inside a dialog or docked and has a some point of zoom out you have it.

[alessiapacca]

hey @atlasan, I saw the implementation of the miniwindow for the editor. What was your use case for that functionality? Did you ever think about showing a rectangle in the miniwindow canvas that, when dragged, moves around the viewport in the primary canvas)? I mean something like the one in rete: https://codepen.io/Ni55aN/details/EqdVad when dragging the yellow rectangle, the viewport offset changes. This would allow to easily move the viewport to the desired part of the graph.

[atlasan]

Hi @alessiapacca! That was not me, I think @jagenjo properly made separated classes for the canvas object and graph allowing so to have multiple canvas for the same graph. If I would need the minimap functionality, I would look at the zoom and drag functionality to implement a small canvas linked with the main one applying the scaling factor to archive it.

[jagenjo]

this should be quite easy, just copy the minimap offset from minimap canvas to maincanvas when user drags the minimap. I havent tested it though.