Plans for other UI in current debian (and future versions)?

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04 Aug 2019 04:35 #141311 by Reinhard
Hi,

just out of curiosity I setup a virtual box with current debian (buster) and built there linuxcnc from git (master).
Build terminates without significant errors, but only tk-variants are able to run.

All gtk-Variants fail with missing gtkglwidgets - I installed the dev-package of that library, but build-process does not use it?
... and QT-Variants fail, cause kde in current debian is no more based on x-server, but on new wayland architecture.

... and even worse: end of this year is the end of python2.

So what are the plans of linuxcnc?

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04 Aug 2019 18:22 #141356 by cmorley
AFAIK there has not been an official plan made.
I see there has been work on python3
Python3 allows us to move everything to current libraries.

I don't know about Kde and wayland but it would make sense that Qt will fix that problem, or I guess we might have to use Gnome?

As you pointed out Tk (AXIS) works which, because it's very popular delays work on the rest.

Chris

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05 Aug 2019 03:19 #141391 by Reinhard

I see there has been work on python3

Ok, is that work publicly accessible?
.

but it would make sense that Qt will fix that problem

Hm, I don't think, that Qt will see the resposability for that.
The point is, that communication between applications works different.
You might have a look at d-bus - guess that is the "new" communication layer.

regards Reinhard

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05 Aug 2019 09:06 #141407 by cmorley
I'm sorry I don't follow you.
AFAIK KDE uses Qt, So somehow Qt must work with wayland.
And then I would bet that pyqt works with wayland - or wow they are losing alot of programs.

What might not work is linuxcnc's current version of pyqt which is python 2 based.
So then we are right back to needing python 3 in linuxcnc.

Chris

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06 Aug 2019 06:21 #141479 by Reinhard
Hi Chris,

you need a closer look to qt-variants of linuxcnc. Not everything, what happens there is the responsability of Qt!
These are the logs from terminal, running any of the qt-variants of linuxcnc:
Traceback (most recent call last):
  File "/usr/local/src/linuxcnc-dev/bin/qtvcp", line 11, in <module>
    from qtvcp.lib import xembed
  File "/usr/local/src/linuxcnc-dev/lib/python/qtvcp/lib/xembed.py", line 46, in <module>
    from Xlib.protocol import event
ImportError: No module named Xlib.protocol
So the source of problems is the (python?)class xembed, which I believe is not from Qt but from linuxcnc. Right?

cheers Reinhard

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06 Aug 2019 13:35 #141527 by cmorley
Xlib is used for forwarding keyboard events to Qt when 'embedding' other programs into QT - so is not required unless you embed. I don;t know anything about Wayland but hopefully there is an equivalent (though the Xembed in pyqt doesn't work quite right at the moment either)
If you don;t use it then when focus is on the embedded panel keyboard events only go to the embedded program, so things like 'estop' and 'pause' etc won't work as expected.

It should be possible to detect that Xlib is not available and just lose the utility rather then error.

Chris

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12 Aug 2019 20:51 #142001 by andypugh
There is a script to help:https://pygobject.readthedocs.io/en/latest/guide/porting.html

I have made some progress with changing

import rsvg

to

from gi.repository import Rsvg as rsvg

for example, but it's not a job I have finished to a working state.

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13 Aug 2019 03:06 #142013 by Reinhard
Hi Andy,

thanks for the link. That sounds quite interesting and promising. Going ahead to gtk3 sounds right.
I don't know much about linuxcnc and used parts - is there anyway a way to help?

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13 Aug 2019 03:39 #142015 by cmorley

There is a script to help:https://pygobject.readthedocs.io/en/latest/guide/porting.html

I have made some progress with changing

import rsvg

to

from gi.repository import Rsvg as rsvg

for example, but it's not a job I have finished to a working state.


i think you will find that gremlin is the problem. I did this years ago in a gtk3 branch.
Maybe we can find a work arounf for gremlin ( I did for qtvcp)

Chris M

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13 Aug 2019 06:57 #142016 by pl7i92
the "momentary" i hope update Hoirror is quite a chalange for people how dont use Linux and cnc stuff at all

most here will agree that you real quick within weeks come to the system
but the start will get people away from the system as so many go in different direction
now taking off cause needed the Future is even more a no way to go for many
they will come sooner or later if they need a good system

the community is now in the full 6month new system develscircle

while most/manny users are still with a real good running 10.04 setup

for shure the new things are great ,a gift to the cnc community as it grows day by day
the system needs to follow

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