Gremlin

BigJohnT
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10 Dec 2012 22:11 #27517 by BigJohnT

Gremlin was created by BigJohnT

When you use the gremlin gladevcp widget you get a bunch of errors on start up.

Any ideas on how to just use the gremlin.py in a window?

John

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ArcEye
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11 Dec 2012 01:37 #27526 by ArcEye

Replied by ArcEye on topic Gremlin

gremlin-run takes command line arguments and requires a running instance of Linuxcnc.

Without either it will abort with errors, is that what you are seeing?

It will run from the command line quite happily when these requirements are met.
I am currently trying to find a way of embedding it inside my Qt GUI, don't want to have to re-implement it if I can avoid it

regards

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BigJohnT
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11 Dec 2012 02:13 #27527 by BigJohnT

Replied by BigJohnT on topic Gremlin

When I put the GladeVCP gremlin widget into my Glade file and run it I get this error.

Starting LinuxCNC...

(gui7:18334): GtkGLExt-CRITICAL **: gtk_widget_get_gl_context: assertion `GTK_WIDGET_REALIZED (widget)' failed

(gui7:18334): GtkGLExt-CRITICAL **: gtk_widget_get_gl_window: assertion `GTK_WIDGET_REALIZED (widget)' failed

(gui7:18334): GtkGLExt-CRITICAL **: gtk_widget_get_gl_window: assertion `GTK_WIDGET_REALIZED (widget)' failed
Traceback (most recent call last):
  File "/usr/lib/pymodules/python2.6/gladevcp/hal_gremlin.py", line 66, in <lambda>
    self.gstat.connect('file-loaded', lambda w, f: self._load(f))
  File "/usr/lib/pymodules/python2.6/rs274/glcanon.py", line 268, in inner
    self.deactivate()
  File "/usr/lib/pymodules/python2.6/gremlin.py", line 153, in deactivate
    gldrawable.gl_end()
AttributeError: 'NoneType' object has no attribute 'gl_end'

So my thought was to try and add gremlin with my python code and see if I get rid of the error.

What command line arguments does gremlin-run take?

Thanks
John

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BigJohnT
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11 Dec 2012 02:23 #27529 by BigJohnT

Replied by BigJohnT on topic Gremlin

Looking at gremlin-run the main class GremlinApp(gtk.Window): looks to take a gtk.window. It can't be a main window so I'm a little confused what to put it into. I searched for sample code where it might be used but found none.

Thanks
John

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cmorley
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11 Dec 2012 02:33 #27530 by cmorley

Replied by cmorley on topic Gremlin

John are you getting those errors even if linuxcnc is running?
I get those error is the GLADe editor if I don't have linuxcnc running.
I don't get them of course when Gscreen is loaded as it load linuxcnc first.
I have been meaning to look into it but of course have not yet...

Chris M

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ArcEye
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11 Dec 2012 03:42 #27533 by ArcEye

Replied by ArcEye on topic Gremlin

What command line arguments does gremlin-run take?

I haven't looked at this properly yet, just putting the path to the .ini file got it running, but I need to look at the code to see how to specify the gcode file to plot.

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BigJohnT
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11 Dec 2012 03:59 #27535 by BigJohnT

Replied by BigJohnT on topic Gremlin

cmorley wrote:
John are you getting those errors even if linuxcnc is running?
I get those error is the GLADe editor if I don't have linuxcnc running.
I don't get them of course when Gscreen is loaded as it load linuxcnc first.
I have been meaning to look into it but of course have not yet...

Chris M

I wonder if the order I have in my file makes a difference? I'll try a few things.

John

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BigJohnT
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11 Dec 2012 08:14 #27549 by BigJohnT

Replied by BigJohnT on topic Gremlin

I still get the error... this is my main class init, I'm assuming the the line self.cnc = linuxcnc loads linuxcnc?

# main class
class gui7(object):

  def __init__(self, inifile):
    self.builder = gtk.Builder()
    self.builder.add_from_file(xmlname)
    self.builder.connect_signals(self)
    self.cnc = linuxcnc
    self.notebook = self.builder.get_object('notebook')
    self.num_pad = self.builder.get_object('num_pad')
    self.np_label = self.builder.get_object('np_label')
    self.halcomp = hal.component('gui7')
    self.panel = gladevcp.makepins.GladePanel(self.halcomp, xmlname, self.builder, None)
    self.halcomp.ready()
    self.ini_file = os.environ['INI_FILE_NAME']
    self.window = self.builder.get_object('base_window')
    self.window.show()

John

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BigJohnT
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11 Dec 2012 08:33 #27551 by BigJohnT

Replied by BigJohnT on topic Gremlin

Running Gscreen I don't see that error so I must have something wrong.

John

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cmorley
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11 Dec 2012 09:31 #27552 by cmorley

Replied by cmorley on topic Gremlin

No linuxcnc is loaded from a script when you start a config. (that's what I meant by linuxcnc)
the linuxcnc in your program is the python bindings to linuxcnc's status data and functions.

Are you starting this program like a regular config?
If so it may be that Gscreen takes longer to initialize so avoids this error.
It's cause because gremlin is trying to poll linuxcnc and linuxcnc isn't ready yet.
some sort of
try:
except:
in gremlin should fix this

Chris M

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