#!/usr/bin/env python 
'''
Copyright (C) 2006 cedric GEMY, cedric@le-radar.com

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

TODO :
specify save format, scale
save selected

RELEASE NOTE
- can export layers only as separate pngs 
- Default directory = $Home
- create the dest dir if doesn't exists

'''
import inkex
import sys, os, tempfile

class MyEffect(inkex.Effect):
    def __init__(self):
        inkex.Effect.__init__(self)
        self.OptionParser.add_option("-d", "--directory",
                        action="store", type="string", 
                        dest="directory", default=os.path.expanduser("~"),
                        help="Existing destination directory")
        self.OptionParser.add_option("-l", "--layers",
                        action="store", type="inkbool", 
                        dest="layers", default=False,
                        help="Save layers with their groups")
        '''self.OptionParser.add_option("-s", "--scale",
                        action="store", type="float", 
                        dest="scale", default=100,
                        help="Scales the group at the specified value")
        self.OptionParser.add_option("-f", "--format",
                        action="store", type="string", 
                        dest="format", default="png",
                        help="Save at the specified format [only PNG implemented yet]") 
        '''
    def output(self):
        pass
    
    def effect(self):
        svg_file = self.args[-1]
        node = inkex.xml.xpath.Evaluate('/svg',self.document)[0]
        '''docname = node.attributes.getNamedItemNS(inkex.NSS[u'sodipodi'],'docname').value[:-4]'''

        #create os temp dir
        '''tmp_dir = tempfile.mkdtemp()'''
        directory = self.options.directory
        """area = '--export-area-canvas'"""
        pngs = []
        if self.options.layers:
            path = "/svg/*[name()='g' or @style][@id]"
        else:
            path = "/svg/g/*[name()='g' or @style][@id]"
        
        for node in inkex.xml.xpath.Evaluate(path,self.document):
            id = node.attributes.getNamedItem('id').value
            name = "%s.png" % id
            filename = os.path.join(directory, name)
            command = "inkscape -i \"%s\" -e \"%s\" \"%s\" " % (id, filename, svg_file)
            f = os.popen(command,'r')
            f.read()
            f.close()
            pngs.append(filename)

e = MyEffect()
e.affect()
