[Solved] FEM doesn't work anymore

[ElMastro]

Sorry, I misunderstood. Running the code alone it gives back no reply, however, If I run it after building the box and starting the analysis, this is the Python console:

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Python 3.7.3 (default, Mar 26 2019, 21:43:19) 
[GCC 8.2.1 20181127] on linux
Type 'help', 'copyright', 'credits' or 'license' for more information.
>>> FreeCAD.getHomePath() + "Mod/Fem/Resources/ui/MeshGmsh.ui"
'/usr/lib/freecad/Mod/Fem/Resources/ui/MeshGmsh.ui'
>>> form = FreeCADGui.PySideUic.loadUi(FreeCAD.getHomePath() + "Mod/Fem/Resources/ui/MeshGmsh.ui")
>>> form
<PySide2.QtWidgets.QWidget object at 0x7fa888755288>
>>> form.if_max # this doesn't seem to work for you
Traceback (most recent call last):
  File "<input>", line 1, in <module>
AttributeError: 'PySide2.QtWidgets.QWidget' object has no attribute 'if_max'
>>> 
>>> from PySide2 import QtWidgets
>>> 
>>> f=form.findChildren(QtWidgets.QLineEdit)
>>> f[0].metaObject().className()
'Gui::InputField'
>>> f[0].objectName()
'if_max'
>>> 
>>> form.show()
>>> App.newDocument("Senza nome")
>>> App.setActiveDocument("Senza_nome")
>>> App.ActiveDocument=App.getDocument("Senza_nome")
>>> Gui.ActiveDocument=Gui.getDocument("Senza_nome")
>>> Gui.activeDocument().activeView().viewDefaultOrientation()
>>> Gui.activateWorkbench("PartWorkbench")
>>> App.ActiveDocument.addObject("Part::Cylinder","Cylinder")
>>> App.ActiveDocument.ActiveObject.Label = "Cilindro"
>>> App.ActiveDocument.recompute()
>>> Gui.SendMsgToActiveView("ViewFit")
>>> App.getDocument("Senza_nome").removeObject("Cylinder")
>>> App.getDocument("Senza_nome").recompute()
>>> App.ActiveDocument.addObject("Part::Box","Box")
>>> App.ActiveDocument.ActiveObject.Label = "Cubo"
>>> App.ActiveDocument.recompute()
>>> Gui.SendMsgToActiveView("ViewFit")
>>> Gui.activateWorkbench("FemWorkbench")
>>> import FemGui
>>> import ObjectsFem
>>> ObjectsFem.makeAnalysis(FreeCAD.ActiveDocument, 'Analysis')
>>> FemGui.setActiveAnalysis(FreeCAD.ActiveDocument.ActiveObject)
>>> ObjectsFem.makeSolverCalculixCcxTools(FreeCAD.ActiveDocument)
>>> FemGui.getActiveAnalysis().addObject(FreeCAD.ActiveDocument.ActiveObject)
>>> form = FreeCADGui.PySideUic.loadUi(FreeCAD.getHomePath() + "Mod/Fem/Resources/ui/MeshGmsh.ui")
>>> form
<PySide2.QtWidgets.QWidget object at 0x7fa83bec4fc8>
>>> form.if_max # this doesn't seem to work for you
Traceback (most recent call last):
  File "<input>", line 1, in <module>
AttributeError: 'PySide2.QtWidgets.QWidget' object has no attribute 'if_max'

Tracebacks are in red.

[wmayer]

I think there might be a bug in your PySide2 package. From the test code everything except form.if_max works.

Here is a slight modification you can try:

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from PySide2 import QtCore, QtGui, QtWidgets
import FreeCADGui
loader = FreeCADGui.UiLoader()
form = loader.load(FreeCAD.getHomePath() + "Mod/Fem/Resources/ui/MeshGmsh.ui")
form.if_max
f=form.findChildren(QtWidgets.QLineEdit)
f[0].metaObject().className()
f[0].objectName()
form.show()

So, somewhere a mechanism is implemented which automatically adds the sub-controls as attributes to the form object. For those where it works you can see this with

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dir(form).index("if_max")

where a number is returned, otherwise an exception is raised.

Next test:
Open QtDesigner and create a standard dialog with two buttons, save the file as dialog.ui (e.g. under C:/Temp).
Now from a standard Python shell (not that of FreeCAD) do

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from PySide2 import QtCore, QtGui, QtWidgets
from PySide2 import QtUiTools
import sys

app=QtWidgets.QApplication(sys.argv)

ui=QtUiTools.QUiLoader()
dialog=ui.load("C:/Temp/dialog.ui")
dialog.buttonBox

If the last line also fails then your PySide2 is broken.

[ElMastro]

from PySide2 import QtCore, QtGui, QtWidgets
import FreeCADGui
loader = FreeCADGui.UiLoader()
form = loader.load(FreeCAD.getHomePath() + "Mod/Fem/Resources/ui/MeshGmsh.ui")
form.if_max
f=form.findChildren(QtWidgets.QLineEdit)
f[0].metaObject().className()
f[0].objectName()
form.show()

Same results;
As I enter

dir(form).index("if_max")

output is

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Traceback (most recent call last):
  File "<input>", line 1, in <module>
ValueError: 'if_max' is not in list

I can't find Qtdesigner, probably in linux has been renamed to something else, I'll try the code as soon as I can install it. At this point I'm pretty sure PySide2 could be broken, so in the time I'll reinstall it and ask to the mantainer if someone else has experienced problems

[ElMastro]

All right, the command that launch Qtdesigner in linux is "desinger".
I saved the gui and run the code, output is

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Python 3.7.3 (default, Mar 26 2019, 21:43:19) 
[GCC 8.2.1 20181127] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from PySide2 import QtCore, QtGui, QtWidgets
>>> from PySide2 import QtUiTools
>>> import sys
>>> 
>>> app=QtWidgets.QApplication(sys.argv)
>>> 
>>> ui=QtUiTools.QUiLoader()
QVTKWidgetPlugin instantiated

QVTKWidgetPlugin::name

Qt WebEngine seems to be initialized from a plugin. Please set Qt::AA_ShareOpenGLContexts using QCoreApplication::setAttribute before constructing QGuiApplication.
>>> dialog=ui.load("/tmp/dialog.ui")
>>> dialog.buttonBox
<PySide2.QtWidgets.QDialogButtonBox object at 0x7fcdc6b0c808>
>>> 

(Nothing appears)

[Kunda1]

All right, the command that launch Qtdesigner in linux is "desinger".

You mean designer and more aptly designer-qt5

[ElMastro]

You mean designer and more aptly designer-qt5

Exactly, I misspelled.

I started a post on the archlinux forum to confirm if I'm the only one with this problem, but I got no answer yet
https://bbs.archlinux.org/viewtopic.php?id=246769

[wmayer]

>>> dialog=ui.load("/tmp/dialog.ui")
>>> dialog.buttonBox
<PySide2.QtWidgets.QDialogButtonBox object at 0x7fcdc6b0c808>

It's strange that it works for built-in Qt widgets but fails for custom widgets.

What happens with this when doing it in the FreeCAD Python console?

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from PySide2 import QtCore, QtGui, QtWidgets

ui=FreeCADGui.UiLoader()
dialog=ui.load("/tmp/dialog.ui")
dialog.buttonBox

And you can try this:

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from PySide2 import QtCore, QtGui, QtWidgets
import FreeCADGui
loader = FreeCADGui.UiLoader()
form = loader.load(FreeCAD.getHomePath() + "Mod/Fem/Resources/ui/MeshGmsh.ui")

print (dir(form)) # post this output please

I assume that it only reports built-in widgets but ignores custom widgets.

[wmayer]

I started a post on the archlinux forum to confirm if I'm the only one with this problem, but I got no answer yet
https://bbs.archlinux.org/viewtopic.php?id=246769

With this you probably won't get much feedback because nobody knows what to test actually. You should at least post the link to this thread.

Btw which PySide version do you use?

[ElMastro]

I use the 5.12.3-1 version.
I wrote an email to the mantainer to know if he knows anything about this problem.

[ElMastro]

Something is definitively wrong. When I search for Pyside2 in the AUR repsitory what I find is

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aur/pyside2-common-git 5.11.2.r5903.ae51319f-1 (+2 0.00%) 
    LGPL Qt bindings for Python (Common Files)
aur/pyside2-tools-common-git 5.11.1.r117.f1b7755-1 (+0 0.00%) (Orphaned) 
    PySide lupdate, rcc, and uic development tools (Common Files)
aur/python-pyside2-git 5.11.2.r5903.ae51319f-1 (+2 0.00%) 
    LGPL Qt bindings for Python 3
aur/python-pyside2-tools-git 5.11.1.r117.f1b7755-1 (+0 0.00%) (Orphaned) 
    PySide lupdate, rcc, and uic development tools (for Python 3)
aur/python2-pyside2-git 5.11.2.r5903.ae51319f-1 (+2 0.00%) 
    LGPL Qt bindings for Python 2
aur/python2-pyside2-tools-git 5.11.1.r117.f1b7755-1 (+0 0.00%) (Orphaned) 
    PySide lupdate, rcc, and uic development tools (for Python 2)

However my version of pyside2 is 12.3 (current one on git repositories). It would be great if someone who does have Pyside2 up to date could tell me where to get it.