Can't interact with edges in the default node layout

[kazcw]

Discord username

No response

What type of issue is this?

Permanent – Occurring repeatably

Is this issue blocking you from using Enso?

• Yes, I can't use Enso because of this issue.

Is this a regression?

• Yes, previous version of Enso did not have this issue.

What issue are you facing?

When nodes are rendered in the automatic layout used if they are loaded from a file without any position metadata, they are close enough together that the nodes' selection areas completely cover the gaps between nodes. Since node selection areas take I/O precedence over edges (is this the bug here?) it is not possible to disconnect edges without rearranging nodes.

Expected behaviour

It should be possible to hover and disconnect edges even between nodes that are close together.

How we can reproduce it?

Load any file without metadata, after #8893 (which fixes a bug where automatic node layout was upside-down, so all edges were backward edges)--or move some nodes close together vertically.

Screenshots or screencasts

Logs

No response

Enso Version

current

Browser or standalone distribution

Chromium

Browser Version or standalone distribution

any

Operating System

MacOS

Operating System Version

No response

Hardware you are using

No response

[farmaazon]

Yes, I think the edges should take precedence over the selection hover.

[somebody1234]

i think this might be quite difficult, as selection hover is drawn over edges, right?
i wonder if there are any nice solutions

[kazcw]

i think this might be quite difficult, as selection hover is drawn over edges, right? i wonder if there are any nice solutions

It's drawn over edges, but we actually already render edges twice--the visible version, and a visually-transparent IO version (with a wider stroke width); so I think we can fix this by simply ensuring the IO layer is above the selection.

[farmaazon]

Refinement notes:

• Selection areas need to be in a separate layer, under all nodes and edges (same for "interaction area" of selection).
• The selection may be teleported to their layer, or just handled separately (in kind of GraphSelections component).

[enso-bot]

Keziah Wesley reports a new STANDUP for today (2024-03-08):

Progress: Addressed review on some PRs; fixed selection layering. It should be finished by 2024-03-08.

Next Day: Next day I will be working on the #8938 task. Pick something from backlog.