#!/usr/bin/env python
#
# Requisites:
#	install vignette plugin: http://blog.tigion.de/2008/07/19/gimp-script-fu-photo-vignette/
#	link this script to ~/.gimp-2.6/plug-ins/
#
# How to run:
#	start gimp
#	click (maybe twice) at the "Batch mode" menu entry (next to "Help")
#	choose a file, that contains a list of absolute filenames of pictures (one per line)
#
# The resulting pictures are placed besides the originals with the given prefix (default: "converted_").
#
# Adapt the settings below to your needs!
#

import gimp
import gimpfu
import sys
import os

FILE_PREFIX = "converted_"

# default: 7
CARTOON_RADIUS = 50
# default: 0.2
CARTOON_BLACK = 0.25
# default: 2
POSTERIZE_COLORS = 9
# default: (0, 0, 0)
VIGNETTE_COLOR = (0, 0, 0)
# default: 60 (%) (Deckkraft)
VIGNETTE_COVERAGE = 70
# default: 5
VIGNETTE_RADIUS = -10
# default: 75 (Haerte)
VIGNETTE_STRENGTH = 75


def get_output_filename(infilename):
	return os.path.join(os.path.dirname(infilename), FILE_PREFIX + os.path.basename(infilename))


def handle_file(infilename):
	#pic = gimp.pdb.file_jpeg_load(infilename, gimpfu.RUN_NONINTERACTIVE)
	pic = gimp.pdb.gimp_file_load(infilename, gimpfu.RUN_NONINTERACTIVE)
	layer = pic.layers[0-1]
	gimp.pdb.plug_in_cartoon(pic, layer, CARTOON_RADIUS, CARTOON_BLACK)
	gimp.pdb.gimp_posterize(layer, POSTERIZE_COLORS)
	gimp.pdb.script_fu_photo_vignette(pic, layer, VIGNETTE_COLOR, VIGNETTE_COVERAGE, VIGNETTE_RADIUS, VIGNETTE_STRENGTH)
	output_filename = get_output_filename(infilename)
	gimp.pdb.gimp_file_save(pic, layer, output_filename, output_filename, run_mode=gimpfu.RUN_NONINTERACTIVE)


def read_filelist(listfile):
	for line in file(listfile).read().splitlines():
		handle_file(line)


gimpfu.register(
		"python_fu_batch_convert",
		"Convert some pictures via batch mode",
		"Convert some pictures via batch mode",
		"Lars Kruse",
		"Lars Kruse",
		"2009",
		"<Toolbox>/Batch mode...", "",
		[ (gimpfu.PF_FILE, "listfile", "Listendatei", "") ],
		[],
		read_filelist)

gimpfu.main()