MQTT flow style with "wires/ ribbons" (OGL?)

[the_shelter]

Hi,

after almost 10 years I am back on the mailing list. I have just recently done some work on a workflow-tool.
Now I want to introduce the ability to connect/ disconnect i.e. workfow 1 and worflow 2.
Each workflow is a series of operations on a file. By connecting workflows I want to intriduce the ability to have the output of i.e. workflow 1 be the input of workflow 2.

So what I am basically looking for is a canvas on which I can move and connect worflows (represented by bmps on that canvas) with a "ribbon"-like wiring (much like patch cables).

I remembered the OGL example (Miscellaneous->OGL) in the demos, but I do not see any further documentation especially on the "wiring" or more examples when googling ...

Simply put: I need to put bitmaps on a canvas, move them around with attached cables (ideally w/ an arrow) stuck to them and be able to detach these cables as well.

I would of course welcome something more "modern-looking" or with extended features like resizing the elements on the canvas etc ... so it does not have to be OGL ...

Anybody out there w/ exampes/ links/ hints?

Cheers,

the_shelter

[the_shelter]

Oh- I meant NODE-RED- style - not MQTT, of course :-)

[Chris Barker]

You could use wx.lib.floatcanvas to build this -- particularly if you want it to be zoom and scrollable.

So what I am basically looking for is a canvas on which I can move and connect workflows (represented by bmps on that canvas) with a "ribbon"-like wiring (much like patch cables).

you will need to write the "draw a nice ribbon" code yourself, and the logid oconnect, disconnect. And any auto-layout, if you want that.

In short, all its giveing you is the rendering and mouse event capturing.

I would of course welcome something more "modern-looking" or with extended features like resizing the elements on the canvas etc

well, as for modern, floatcanvwas could use some help -- at least the buttons on the built-in navigation toolbar are really old! PR's excepted :-)

Anybody out there w/ exampes/ links/ hints?

Hmm -- it looks like the FloatCanvas Demos didn't make it into the Phoenix source, but they are still there in the old SVN repo:

http://svn.wxwidgets.org/svn/wx/wxPython/3rdParty/FloatCanvas/Demos/

Those are pretty old and crufty, so if you want to test them an report issues (Or fix them!) -- lee me know, I'll setup a gitHub repo for them somewhere.

-CHB

 

Cheers,

the_shelter

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[the_shelter]

Thank you Chris,

ugh: the changelog is fom 2008 and the todo list from 2010 :-(
Seems like it definitely could use some brushing up on ...
I will test the (Python2-) demos and report back changes and pitfalls I crossed ...

Cheers