Lomo Effect for 2.9.9

[dinasset]

Hi.
I'm playing a bit with 2.9.9 and to train myself I started writing some very small filters.
This one is not ORIGINAL, i.e. has not been invented by me:  I took a couple of two small existing filters (in .scm), combined into just one and ported into python.
The original filters are:
- Alexia Death's script-fu-lomo-effect and Avi Bercovich's script-fu-lomo
Comments, critics, suggestions are welcome.
If someone is interested in the originals I attach here also those.
They are the versions I have in my folders, menu has been modified, they will appear under BestFilters/Photo/Effects (I do not remember the original menu).
My filter will appear under menu="<Image>/Diego/Ancillary2"

[Espermaschine]

How is it different from the G'MIC Lomo effect ?

[rich2005]

(03-11-2018, 01:23 PM)Espermaschine Wrote: How is it different from the G'MIC Lomo effect ?

A comparison in my Gimp 2.9.9, 


edit: Ran the plugin again with the compat-mode switch off.
No errors, so future proof until the Gimp developers throw in some more weird code.

[Ofnuts]

(03-11-2018, 01:00 PM)dinasset Wrote: Hi.
I'm playing a bit with 2.9.9 and to train myself I started writing some very small filters.
This one is not ORIGINAL, i.e. has not been invented by me:  I took a couple of two small existing filters (in .scm), combined into just one and ported into python.
The original filters are:
- Alexia Death's script-fu-lomo-effect and Avi Bercovich's script-fu-lomo
Comments, critics, suggestions are welcome.
If someone is interested in the originals I attach here also those.
They are the versions I have in my folders, menu has been modified, they will appear under BestFilters/Photo/Effects (I do not remember the original menu).
My filter will appear under menu="<Image>/Diego/Ancillary2"

**cough**

Code:

    pdb.gimp_context_push()
    currFG = pdb.gimp_context_get_foreground()
    currBG = pdb.gimp_context_get_background()

# [... snip ...]

    pdb.gimp_context_pop()
    pdb.gimp_context_set_foreground(currFG)
    pdb.gimp_context_set_background(currBG)

Context push/op operations are designed precisely to avoid saving/restoring colors and other context elements (pattern, font, gradient...)

Otherwise, what is specific to 2.9.x in the code?

[dinasset]

Nothing specific, just the way to set the layer's mode is typical of 2.9

About the FG/BG saving/restoring: some times ago I noticed (on 2.8) that the push/pop operations were not enough for them (OK for pattern, font, gradient), hence I specifically added those.
Didn't try yet if that was a temporary bug on 2.8.

[Ofnuts]

(03-12-2018, 05:13 AM)dinasset Wrote: Nothing specific, just the way to set the layer's mode is typical of 2.9

About the FG/BG saving/restoring: some times ago I noticed (on 2.8) that the push/pop operations were not enough for them (OK for pattern, font, gradient), hence I specifically added those.
Didn't try yet if that was a temporary bug on 2.8.

Works for me on 2.8.22. Even better, it seems that of you do one context_push() there is an implicit context_pop() at the end:

Code:

#!/usr/bin/env python
# -*- coding: utf-8 -*-

from gimpfu import *

def testContext(image,layer):
    gimp.context_push()
    gimp.set_foreground(0,0,255)
    layer.fill(FOREGROUND_FILL)
#    gimp.context_pop()  # doesn't even seem necessary
    
register(
    'test-context','Test context','Test context',
    '','','','Test context','RGB*',
    [(PF_IMAGE,'image','Input image', None),(PF_DRAWABLE,'layer','Input layer', None)],[],
    testContext,
    menu='<Image>/Test'
)

main()

[dinasset]

Very good info !