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+---- Thread: How to test if there is a selection. (/Thread-How-to-test-if-there-is-a-selection)
How to test if there is a selection. - david - 10-02-2020
How do I test to find if an image has a selection?
What I wish to do is: If image has selection, then do something.
I'm afraid that I find the descriptions in the Python console as clear as mud! Perhaps they are OK for someone who alreay knows the answer.
david.
RE: How to test if there is a selection. - Kevin - 10-02-2020
I would have thought gimp-selection-is-empty would be the one to use
RE: How to test if there is a selection. - Ofnuts - 10-02-2020
(10-02-2020, 04:07 PM)Kevin Wrote: I would have thought gimp-selection-is-empty would be the one to use
Same here.
RE: How to test if there is a selection. - david - 10-02-2020
Many thanks Kevin.
My problem this time was with the English! gimp_selection_is_empty implied to me that a selection existed, but contained nothing.
gimp_no_selection or gimp_selection_absent would be more self-explanatory!
david.
RE: How to test if there is a selection. - Ofnuts - 10-03-2020
(10-02-2020, 10:55 PM)david Wrote: Many thanks Kevin.
My problem this time was with the English! gimp_selection_is_empty implied to me that a selection existed, but contained nothing.
gimp_no_selection or gimp_selection_absent would be more self-explanatory!
david.
So the call is appropriately named, because technically the selection is always here... image.selection or pdb.gimp_image_get_selection(image) will always return a channel, but you would have to use the histogram calls to determine if there are any non-zero pixels in it.