Hoping for a " Export Layers as png (or jpg) script"

PhotoComix · **Joined:** Apr 12, 2010 **Posts:** 5870

I know well that are several similar script but none may do what i need

The script should export all layers of a xcf as png(or jpg ) using the Layer names as name for the new images
In case 2 names identical should add a progressive numeric prefix (or post fix ) to avoid overwriting

The names to use may be pretty long, this is a layer name

[G'MIC] Graphic Novel FX : -gimp_photocomix_booost2 1,4.36364,10.4727,5,20,0.12,14,0,0.5,0.54,2.90909,9,0.936364,1,0.5,0.54,0.78

that should become

[G'MIC] Graphic Novel FX : -gimp_photocomix_booost2 1,4.36364,10.4727,5,20,0.12,14,0,0.5,0.54,2.90909,9,0.936364,1,0.5,0.54,0.78.png

or in case another layer already saved with same name

1_[G'MIC] Graphic Novel FX : -gimp_photocomix_booost2 1,4.36364,10.4727,5,20,0.12,14,0,0.5,0.54,2.90909,9,0.936364,1,0.5,0.54,0.78.png

In many cases i strictly need only the first part as
[G'MIC] Graphic Novel FX : -gimp_photocomix_booost2 .png
but would be much better if all the name used without shortening

a xcf with similar long names is here

http://www.box.net/shared/sfslkllqoa

paynekj · **Posted:** Tue Jan 11, 2011 5:17 am **(#2)**

Do you care if the solution is a script-fu script or a python script? and what do you want to happen if the layer name has characters in that aren't allowed in filenames - "/ \ < > | * ? :"

Where you you like to continue this discussion? Here or on http://www.gimptalk.com/forum/posting.php?mode=reply&f=9&t=51356&sid=cc6722b97405d5c7d1c579c717bb299a

For preference I'd say here as GimpTalk continues to be unreliable.

PhotoComix · **Joined:** Apr 12, 2010 **Posts:** 5870

Thank Paynekj ...here is fine
No problem if python or script fu i may well use both

Filename may contain ": - ., []"
So if ":" is forbidden i fear should be replaced by ...huumm "ç" or "@" are allowed in image names ?

the other characters may be normal letters, numbers and "-.,[]" I hope those last all permitted

I will use not only for image modified with gmic, but in all other cases names will be more "normal"

paynekj · **Posted:** Tue Jan 11, 2011 6:40 am **(#4)**

Here's a good article about illegal characters in filenames:
http://linuxboxadmin.com/articles/tools-and-utilities/linux/mac/windows-file-name-friction.html and it does also raise the point about the full path on Windows must be at most 255 characters.

How about I change the colon ":" into a semi-colon ";" ? I think the @ would be OK, but I'm not sure about "ç" (is it ASCII character 231?)

If you save a layer manually, what settings do you use in the PNG file save dialog?
Interlacing, Save background color, Save gamma, Save layer offset, Save resolution, Save creation time, Save comment, preserve color of transparant pixels, and compression level

PhotoComix · **Joined:** Apr 12, 2010 **Posts:** 5870

How about I change the colon ":" into a semi-colon ";" ?

Perfect !

f you save a layer manually, what settings do you use in the PNG file save dialog?
Interlacing, Save background color, Save gamma, Save layer offset, Save resolution, Save creation time, Save comment, preserve color of transparant pixels, and compression level

Interlacing, Save background color, Save gamma, Save layer offset = False
Save resolution, Save creation time, Save comment, preserve color of transparant pixels =True
compression level= max (9)

paynekj · **Posted:** Wed Jan 12, 2011 5:36 am **(#6)**

Hopefully this will do what you want. I tried to attach it to this post but I got the nasty message: The extension py is not allowed :gaah

so here it is as code:

Code: Select all

#!/usr/bin/env python
# Author: Kevin Payne
# Copyright 2011 Kevin Payne
# License: GPL v3
# GIMP plugin to export the layers of an .xcf as png images
#  each png file has the name of the layer
# For PhotoComix:- http://gimpchat.com/viewtopic.php?f=9&t=985

from gimpfu import *
import os.path
import pygtk
import gtk

# something to help with debugging
def debugMessage(Message):
    dialog = gtk.MessageDialog(None, 0, gtk.MESSAGE_INFO, gtk.BUTTONS_OK, Message)
    dialog.run()
    dialog.hide()

# unique_filename from http://stackoverflow.com/questions/183480/is-this-the-best-way-to-get-unique-version-of-filename-w-python
def unique_filename(file_name):
    counter = 1
    file_name_parts = os.path.splitext(file_name) # returns ('/path/file', '.ext')
    while os.path.isfile(file_name): 
      file_name = file_name_parts[0] + '_' + str(counter) + file_name_parts[1]
      counter += 1
    return file_name

# this is the bit that does all the work
def export_layers_as_png(img):
    layer_ids = img.layers                         # get the layers in the image
    directory_name = os.path.dirname(img.filename) # where is the source image
    
#    debugMessage(directory_name)
    
    num_layers = len(layer_ids)                    
    for layer_num in range (0, num_layers):        # work through layers (change to "num_layers-1" if you don't want the bottom layer)
      layer_name = pdb.gimp_drawable_get_name(layer_ids[layer_num])  
#      debugMessage(layer_name)
      
      # replace any illegal characters to be on the safe side
      layer_name = layer_name.replace(":", ";")
      layer_name = layer_name.replace("/", ";")
      layer_name = layer_name.replace("\\", ";")
      layer_name = layer_name.replace("?", ";")
      layer_name = layer_name.replace("*", ";")
      layer_name = layer_name.replace("\"", ";")
      
#      debugMessage(layer_name)

      # build the new file path - puts the saved layers in the same place as the source image
      png_file = os.path.join(directory_name, layer_name + ".png")
      png_file = unique_filename(png_file)

#      debugMessage(png_file)      
      pdb.file_png_save2(img, layer_ids[layer_num], png_file, png_file, 1, 9, 1, 1, 0, 1, 1, 1, 1)

      # The End of the main routine


# menu registration
register(
    "python-fu-export-layers-as-png",
    "Export Layers as PNGs",
    "Export Layers as PNGs",
    "paynekj",
    "GimpChat",
    "12.01.2011",
    "Export Layers as separate PNGs", 
    "*",
    [
         (PF_IMAGE, "image",       "Input image", None),
    ],
    [],
    export_layers_as_png,
    menu="<Image>/contributed/"
    )

main()

It's python, and you know where to put pythons

The menu entry is under "contributed" because I'd rather you decide where you want to put it.

Rod · **Joined:** May 16, 2010 **Posts:** 14709 **Location:** USA

Awesome, i have mine set to open in the File menu.
Thanks paynekj. =)

PhotoComix · **Joined:** Apr 12, 2010 **Posts:** 5870

thank Kevin i am installing now

mahvin · **Joined:** Oct 06, 2010 **Posts:** 4045

Thanks, Kevin!

PhotoComix · **Joined:** Apr 12, 2010 **Posts:** 5870

PERFECT !! :yes

Thank a lot Kevin, i had a dumb moment (at first i saved as scm :lol

) but the script works as a charm :wow

mikethedj4 · **Posted:** Wed Jan 12, 2011 11:40 pm **(#11)**

Here's two scripts I have on my Linux machine here, maybe they should help you out.

Attachment:

savealllayers.zip [4 KiB]
Downloaded 276 times

PhotoComix · **Joined:** Apr 12, 2010 **Posts:** 5870

Thank Mike but i was needing a new script and paynekj solved well , the whole point was save the layer names as names of the png, and deal with possible special characters that are often present in that names

mikethedj4 · **Posted:** Thu Jan 13, 2011 2:58 pm **(#13)**

oh ok

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