[FEATURE] Add support for JSON Canvas

[Routhinator]

Is your feature request related to a problem? Please describe.

After migrating away from Obsidian as I prefer an open source solution, I find myself missing the Canvas feature a lot. It would be excellent to have support for this spec in QOwnNotes now that it has been open sourced.

Describe the solution you'd like

Add supporting implementation of https://jsoncanvas.org/docs/apps/

Describe alternatives you've considered

Not really any alternative here yet. Out side of Obsidian, only a few web apps support it - though there are a ton of libraries for it already https://jsoncanvas.org/docs/apps/

Additional context

The canvas feature is really fantastic for creating a mind cloud of relations in a set of notes and scripts and helps one put everything back together quickly after stepping away from them for a bit.

Output from the debug section in the settings dialog

Not Applicable

[pbek]

Add supporting implementation of https://jsoncanvas.org/docs/apps/

Can you please describe what you mean by that? What does it do, and how is it used from a user perspective?

[Routhinator]

@pbek The info page for the feature in Obsidian is probably the best way to understand the power of the canvas. https://obsidian.md/canvas

This was originally Obsidian closed source only, but they have open sourced the spec and support for the same capability can be added to other clients https://obsidian.md/canvas

The spec has been released under MIT https://github.com/obsidianmd/jsoncanvas/blob/main/LICENSE

[pbek]

That's nothing the QPlainTextEdit of the editor or the QTextBrowser of the preview will ever be able to support. You need a full-fledged web browser to render that. https://github.com/ossldossl/jsonCanvas is not helping with that (as it states in the README).

If there is some web-service that is able to create an image out of the JSON Canvas code when you could do the same as it was done with Mermaid: https://github.com/qownnotes/scripts/tree/master/mermaid

[Routhinator]

Ah, so something only something like an electron based app could so or it would require embedding a browser. I'm guessing Obsidian must do one of those.

Too bad, thanks!

[pbek]

Yes, most of the popular note apps are web apps (and thus slower and more resource hungry 😉).