#!/usr/bin/env python
# Author: Chris Mohler
# Copyright 2010 Chris Mohler
# License: GPL v3
# Version 0.1
# GIMP plugin to export channels as PNGs

from gimpfu import *
import os

gettext.install("gimp20-python", gimp.locale_directory, unicode=True)


def separate_to_pngs(img, drw, path):
	dupe = img.duplicate()
	for layer in dupe.layers:
		layer.visible = 0
        for channel in dupe.channels:
                channel.visible = 0
	for channel in dupe.channels:
		channel.visible = 1
		name = channel.name + ".png"
		fullpath = os.path.join(path, name);
		tmp = dupe.duplicate()
		pdb.file_png_save(tmp, tmp.channels[0], fullpath, name, 0, 9, 1, 1, 1, 1, 1)
		dupe.remove_channel(channel)

	    
register(
    proc_name=("python-fu-separate-to-pngs"),
    blurb=("Separate Channels as PNG"),
    help=("Export all channels as individual PNG files."),
    author=("Chris Mohler"),
    copyright=("Chris Mohler"),
    date=("2010"),
    label=("_Separate to PNGs"),
    imagetypes=(""),
    params=[
	(PF_IMAGE, "img", "Image", None),
	(PF_DRAWABLE, "drw", "Drawable", None),
	(PF_DIRNAME, "path", "Save PNGs here", os.getcwd()),
	   ],
    results=[],
    function=(separate_to_pngs), 
    menu=("<Image>/Filters/Sil_kscreen Tools"), 
    domain=("gimp20-python", gimp.locale_directory)
    )

main()