#!/usr/bin/env python
# -*- coding: <utf-8> -*-
# Author: Erdem Guven <zuencap@yahoo.com>
# Copyright 2010 Erdem Guven
# Copyright 2009 Chris Mohler
# "Only Visible" and filename formatting introduced by mh
# License: GPL v3+
# Version 0.1
# GIMP plugin to export as SVG

from gimpfu import *
import os, re

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

def get_image_name(img):
	imgname = img.name.decode('utf-8')
	regex = re.compile("[^-\w]", re.UNICODE) 
	return regex.sub('_', imgname)

def format_filename(imagename, layer):
	layername = layer.name.decode('utf-8')
	regex = re.compile("[^-\w]", re.UNICODE) 
	filename = imagename + '-' + regex.sub('_', layername) + '.png'
	return filename

def export_as_svg(img, drw, path, only_visible=False, inkscape_layers=True):
	dupe = img.duplicate()
	
	imagename = get_image_name(img)
	images = ""
	
	for layer in dupe.layers:
		if not only_visible or layer.visible:
			filename = format_filename(imagename, layer)
			fullpath = os.path.join(path, filename);
			pdb.file_png_save_defaults(dupe, dupe.layers[0], fullpath, filename)
			
			style=""
			if layer.opacity != 100.0:
				style="opacity:"+str(layer.opacity/100.0)+";"
			if not layer.visible:
				style+="display:none"
			if style != "":
				style = 'style="'+style+'"'
				
			image = ""
			if inkscape_layers:
				image = '<g inkscape:groupmode="layer" inkscape:label="%s" %s>' % (layer.name.decode('utf-8'),style)
				style = ""
			image += ('<image xlink:href="%s" x="%d" y="%d" width="%d" height="%d" %s/>\n' % 
				(fullpath,layer.offsets[0],layer.offsets[1],layer.width,layer.height,style))
			if inkscape_layers:
				image += '</g>'
			images = image + images
		dupe.remove_layer(layer)
	
	svgpath = os.path.join(path, imagename+".svg");
	svgfile = open(svgpath, "w")
	svgfile.write("""<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!-- Generator: GIMP export as svg plugin -->

<svg xmlns:xlink="http://www.w3.org/1999/xlink" """)
	if inkscape_layers:
		svgfile.write('xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape" ')
	svgfile.write('width="%d" height="%d">' % (img.width, img.height));
	svgfile.write(images);
	svgfile.write("</svg>");

			
register(
	proc_name=("python-fu-export-as-svg"),
	blurb=("Export as SVG"),
	help=("Export an svg file and an individual PNG file per layer."),
	author=("Erdem Guven <zuencap@yahoo.com>"),
	copyright=("Erdem Guven"),
	date=("2010"),
	label=("Export as SVG"),
	imagetypes=("*"),
	params=[
		(PF_IMAGE, "img", "Image", None),
		(PF_DRAWABLE, "drw", "Drawable", None),
		(PF_DIRNAME, "path", "Save PNGs here", os.getcwd()),
		(PF_BOOL, "only_visible", "Only Visible Layers?", False),
		(PF_BOOL, "inkscape_layers", "Create Inkscape Layers?", True),
		   ],
	results=[],
	function=(export_as_svg), 
	menu=("<Image>/File"), 
	domain=("gimp20-python", gimp.locale_directory)
	)

main()