Save screenshot in JPG format misbehaves

ParaView Support
1

Dear all,

in ParaView 6.0.1 running on Windows 11 I have a problem with the Save Screenshot functionality when the saved image is of JPG type. It appears that the image format is not recognized properly as JPG.

How to reproduce?

  • ParaView GUI:

    • Setup a render view

    • File → Save Screenshot

    • Set jpg file name, e.g., test.jpg

    • The “Save Screenshot Options” menu will look like this:

      save_screenshot_as_jpg
      save_screenshot_as_jpg1296×737 87.7 KB

    • Note that under “Image Options” the format is set to PNG and png-specific option “Compression Level” is shown

  • Python Shell

    • Setup a render view

    • View → Python Shell

    • Enter: SaveScreenshot(filename="test.jpg",Quality=90)

    • The following error message is thrown:

      >>> SaveScreenshot(filename="test.jpg",Quality=90)

Traceback (most recent call last):

File "C:\Program Files\ParaView 6.0.1\bin\lib\site-packages\paraview\servermanager.py", line 499, in __setattr__

setter = getattr(self.__class__, name)

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

AttributeError: type object 'SaveScreenshot' has no attribute 'Quality'



During handling of the above exception, another exception occurred:



Traceback (most recent call last):

File "C:\Program Files\ParaView 6.0.1\bin\lib\site-packages\paraview\servermanager.py", line 505, in __setattr__

_bc.setattr(self, name, value)

File "C:\Program Files\ParaView 6.0.1\bin\lib\site-packages\paraview\_backwardscompatibilityhelper.py", line 602, in setattr

raise AttributeError()

AttributeError



During handling of the above exception, another exception occurred:



Traceback (most recent call last):

File "<console>", line 1, in <module>

File "C:\Program Files\ParaView 6.0.1\bin\lib\site-packages\paraview\simple\io.py", line 540, in SaveScreenshot

proxy_util.set(options, **params)

File "C:\Program Files\ParaView 6.0.1\bin\lib\site-packages\paraview\util\proxy.py", line 29, in set

proxy.__setattr__(k, v)

File "C:\Program Files\ParaView 6.0.1\bin\lib\site-packages\paraview\servermanager.py", line 512, in __setattr__

raise AttributeError("Attribute %s does not exist. " % name +

AttributeError: Attribute Quality does not exist. This class does not allow addition of new attributes to avoid mistakes due to typos. Use add_attribute() if you really want to add this attribute.

    • Note that Quality = 90 is not accepted as valid parameter as it is only expected if the image format is JPG and latter apparently is not properly identified from the file name test.jpg.

Is this a bug or am I missing something here?

Best regards,
mckel