So I’m on the road to develop a plug-in for GIMP 2.99.16, but I’ve just started out. I am taking baby steps and ran into this error at the get-go.
What I want to achieve:
I want the plug-in menu item to be enabled when there is no image opened.
What I changed:
procedure.set_image_types(‘*’) <- Works.
to:
procedure.set_image_types(”) # <- Broken.
What happens is that the menu item becomes enabled, but when I start the plug-in, I get an error:
“Procedure ‘jb-plug-in-first-try’ has been called with an invalid ID for argument ‘image’. Most likely a plug-in is trying to work on an image that doesn’t exist any longer.”
I am using the code found at:
plug-in tutorial
This code doesn’t reference an image.
Code:
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
import sys
import gi
gi.require_version('Gimp', '3.0')
gi.require_version('GimpUi', '3.0')
from gi.repository import Gimp
from gi.repository import GLib
class MyFirstPlugin (Gimp.PlugIn):
def do_query_procedures(self):
return [ "jb-plug-in-first-try" ]
def do_set_i18n (self, name):
return False
def do_create_procedure(self, name):
procedure = Gimp.ImageProcedure.new(
self,
name,
Gimp.PDBProcType.PLUGIN,
self.run,
None
)
# Requires no image, ''.
# procedure.set_image_types('*') <- Works.
procedure.set_image_types('') # <- Broken.
procedure.set_menu_label("My first Python plug-in")
procedure.add_menu_path('<Image>/Filters/Tutorial/')
procedure.set_documentation(
"My first Python plug-in tryout",
"My first Python 3 plug-in for GIMP 3",
name
)
procedure.set_attribution("Your name", "Your name", "2024")
return procedure
def run(self, procedure, *arg):
Gimp.message("Hello world!")
# do what you want to do, then, in case of success, return:
return procedure.new_return_values(
Gimp.PDBStatusType.SUCCESS, GLib.Error()
)
Gimp.main(MyFirstPlugin.__gtype__, sys.argv)
On another matter, is there a way to refresh the plug-in, as in have GIMP reload it, so that I can edit code and not have to restart GIMP?
Thank you all for your attention,
Charles
