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
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Oh- I meant NODE-RED- style - not MQTT, of course 
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Am Freitag, 2. August 2019 16:21:06 UTC+2 schrieb 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
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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
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Christopher Barker, Ph.D.
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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
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