fa9e4066f08beec538e775443c5be79dd423fcabahrensimport copy

fa9e4066f08beec538e775443c5be79dd423fcabahrensimport gettext

fa9e4066f08beec538e775443c5be79dd423fcabahrensimport optparse

fa9e4066f08beec538e775443c5be79dd423fcabahrensimport os

fa9e4066f08beec538e775443c5be79dd423fcabahrensimport random

fa9e4066f08beec538e775443c5be79dd423fcabahrensimport re

fa9e4066f08beec538e775443c5be79dd423fcabahrensimport sys

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwfrom math import *

fa9e4066f08beec538e775443c5be79dd423fcabahrens

fa9e4066f08beec538e775443c5be79dd423fcabahrensNSS = {

fa9e4066f08beec538e775443c5be79dd423fcabahrensu'sodipodi' :u'http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd',

fa9e4066f08beec538e775443c5be79dd423fcabahrensu'cc' :u'http://creativecommons.org/ns#',

fa9e4066f08beec538e775443c5be79dd423fcabahrensu'ccOLD' :u'http://web.resource.org/cc/',

169cdae232f15e542d6af0a9ce30c3f84222bc0fmarksu'svg' :u'http://www.w3.org/2000/svg',

fa9e4066f08beec538e775443c5be79dd423fcabahrensu'dc' :u'http://purl.org/dc/elements/1.1/',

fa9e4066f08beec538e775443c5be79dd423fcabahrensu'rdf' :u'http://www.w3.org/1999/02/22-rdf-syntax-ns#',

fa9e4066f08beec538e775443c5be79dd423fcabahrensu'inkscape' :u'http://www.inkscape.org/namespaces/inkscape',

fa9e4066f08beec538e775443c5be79dd423fcabahrensu'xlink' :u'http://www.w3.org/1999/xlink',

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwu'xml' :u'http://www.w3.org/XML/1998/namespace'

fa9e4066f08beec538e775443c5be79dd423fcabahrens}

fa9e4066f08beec538e775443c5be79dd423fcabahrens

fa9e4066f08beec538e775443c5be79dd423fcabahrensdef localize():

fa9e4066f08beec538e775443c5be79dd423fcabahrens domain = 'inkscape'

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw if sys.platform.startswith('win'):

fa9e4066f08beec538e775443c5be79dd423fcabahrens import locale

fa9e4066f08beec538e775443c5be79dd423fcabahrens current_locale, encoding = locale.getdefaultlocale()

fa9e4066f08beec538e775443c5be79dd423fcabahrens os.environ['LANG'] = current_locale

fa9e4066f08beec538e775443c5be79dd423fcabahrens try:

fa9e4066f08beec538e775443c5be79dd423fcabahrens localdir = os.environ['INKSCAPE_LOCALEDIR'];

fa9e4066f08beec538e775443c5be79dd423fcabahrens trans = gettext.translation(domain, localdir, [current_locale], fallback=True)

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw except KeyError:

fa9e4066f08beec538e775443c5be79dd423fcabahrens trans = gettext.translation(domain, fallback=True)

fa9e4066f08beec538e775443c5be79dd423fcabahrens elif sys.platform.startswith('darwin'):

fa9e4066f08beec538e775443c5be79dd423fcabahrens try:

fa9e4066f08beec538e775443c5be79dd423fcabahrens localdir = os.environ['INKSCAPE_LOCALEDIR'];

fa9e4066f08beec538e775443c5be79dd423fcabahrens trans = gettext.translation(domain, localdir, fallback=True)

fa9e4066f08beec538e775443c5be79dd423fcabahrens except KeyError:

fa9e4066f08beec538e775443c5be79dd423fcabahrens try:

fa9e4066f08beec538e775443c5be79dd423fcabahrens localdir = os.environ['PACKAGE_LOCALE_DIR'];

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw trans = gettext.translation(domain, localdir, fallback=True)

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw except KeyError:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw trans = gettext.translation(domain, fallback=True)

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw else:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw try:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw localdir = os.environ['PACKAGE_LOCALE_DIR'];

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw trans = gettext.translation(domain, localdir, fallback=True)

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw except KeyError:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw trans = gettext.translation(domain, fallback=True)

fa9e4066f08beec538e775443c5be79dd423fcabahrens #sys.stderr.write(str(localdir) + "\n")

fa9e4066f08beec538e775443c5be79dd423fcabahrens trans.install()

fa9e4066f08beec538e775443c5be79dd423fcabahrens

fa9e4066f08beec538e775443c5be79dd423fcabahrensdef debug(what):

fa9e4066f08beec538e775443c5be79dd423fcabahrens sys.stderr.write(str(what) + "\n")

fa9e4066f08beec538e775443c5be79dd423fcabahrens return what

fa9e4066f08beec538e775443c5be79dd423fcabahrens

fa9e4066f08beec538e775443c5be79dd423fcabahrensdef errormsg(msg):

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw """Intended for end-user-visible error messages.

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw if isinstance(msg, unicode):

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw sys.stderr.write(msg.encode("UTF-8") + "\n")

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw else:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw sys.stderr.write((unicode(msg, "utf-8", errors='replace') + "\n").encode("UTF-8"))

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwdef are_near_relative(a, b, eps):

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw if (a-b <= a*eps) and (a-b >= -a*eps):

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw return True

fa9e4066f08beec538e775443c5be79dd423fcabahrens else:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw return False

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwtry:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw from lxml import etree

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwexcept Exception, e:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw localize()

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw errormsg(_("The fantastic lxml wrapper for libxml2 is required by inkex.py and therefore this extension. Please download and install the latest version from http://cheeseshop.python.org/pypi/lxml/, or install it through your package manager by a command like: sudo apt-get install python-lxml\n\nTechnical details:\n%s" % (e,)))

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw sys.exit()

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwdef check_inkbool(option, opt, value):

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw if str(value).capitalize() == 'True':

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw return True

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw elif str(value).capitalize() == 'False':

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw return False

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw else:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw raise optparse.OptionValueError("option %s: invalid inkbool value: %s" % (opt, value))

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwdef addNS(tag, ns=None):

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw val = tag

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw if ns!=None and len(ns)>0 and NSS.has_key(ns) and len(tag)>0 and tag[0]!='{':

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw val = "{%s}%s" % (NSS[ns], tag)

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw return val

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwclass InkOption(optparse.Option):

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw TYPES = optparse.Option.TYPES + ("inkbool",)

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw TYPE_CHECKER = copy.copy(optparse.Option.TYPE_CHECKER)

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw TYPE_CHECKER["inkbool"] = check_inkbool

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amwclass Effect:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw """A class for creating Inkscape SVG Effects"""

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw def __init__(self, *args, **kwargs):

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw self.document=None

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw self.original_document=None

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw self.ctx=None

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw self.selected={}

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw self.doc_ids={}

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw self.options=None

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw self.args=None

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw self.OptionParser = optparse.OptionParser(usage="usage: %prog [options] SVGfile",option_class=InkOption)

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw self.OptionParser.add_option("--id",

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw action="append", type="string", dest="ids", default=[],

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw help="id attribute of object to manipulate")

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw def effect(self):

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw pass

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw def getoptions(self,args=sys.argv[1:]):

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw """Collect command line arguments"""

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw self.options, self.args = self.OptionParser.parse_args(args)

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw def parse(self, filename=None):

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw """Parse document in specified file or on stdin"""

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw # First try to open the file from the function argument

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw if filename != None:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw try:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw stream = open(filename, 'r')

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw except Exception:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw errormsg(_("Unable to open specified file: %s") % filename)

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw sys.exit()

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw # If it wasn't specified, try to open the file specified as

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw # an object member

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw elif self.svg_file != None:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw try:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw stream = open(self.svg_file, 'r')

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw except Exception:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw errormsg(_("Unable to open object member file: %s") % self.svg_file)

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw sys.exit()

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw # Finally, if the filename was not specified anywhere, use

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw # standard input stream

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw else:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw stream = sys.stdin

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw p = etree.XMLParser(huge_tree=True)

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw self.document = etree.parse(stream, parser=p)

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw self.original_document = copy.deepcopy(self.document)

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw stream.close()

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw # defines view_center in terms of document units

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw def getposinlayer(self):

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw #defaults

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw self.current_layer = self.document.getroot()

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw self.view_center = (0.0,0.0)

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw layerattr = self.document.xpath('//sodipodi:namedview/@inkscape:current-layer', namespaces=NSS)

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw if layerattr:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw layername = layerattr[0]

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw layer = self.document.xpath('//svg:g[@id="%s"]' % layername, namespaces=NSS)

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw if layer:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw self.current_layer = layer[0]

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw xattr = self.document.xpath('//sodipodi:namedview/@inkscape:cx', namespaces=NSS)

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw yattr = self.document.xpath('//sodipodi:namedview/@inkscape:cy', namespaces=NSS)

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw if xattr and yattr:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw x = self.unittouu( xattr[0] + 'px' )

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw y = self.unittouu( yattr[0] + 'px')

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw doc_height = self.unittouu(self.getDocumentHeight())

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw if x and y and doc_height is not None:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw self.view_center = (float(x), doc_height - float(y)) # FIXME: y-coordinate flip, eliminate it when it's gone in Inkscape

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw def getselected(self):

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw """Collect selected nodes"""

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw for i in self.options.ids:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw path = '//*[@id="%s"]' % i

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw for node in self.document.xpath(path, namespaces=NSS):

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw self.selected[i] = node

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw def getElementById(self, id):

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw path = '//*[@id="%s"]' % id

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw el_list = self.document.xpath(path, namespaces=NSS)

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw if el_list:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw return el_list[0]

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw else:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw return None

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw def getParentNode(self, node):

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw for parent in self.document.getiterator():

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw if node in parent.getchildren():

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw return parent

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw break

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw def getdocids(self):

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw docIdNodes = self.document.xpath('//@id', namespaces=NSS)

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw for m in docIdNodes:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw self.doc_ids[m] = 1

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw def getNamedView(self):

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw return self.document.xpath('//sodipodi:namedview', namespaces=NSS)[0]

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw def createGuide(self, posX, posY, angle):

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw atts = {

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw 'position': str(posX)+','+str(posY),

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw 'orientation': str(sin(radians(angle)))+','+str(-cos(radians(angle)))

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw }

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw guide = etree.SubElement(

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw self.getNamedView(),

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw addNS('guide','sodipodi'), atts )

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw return guide

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw def output(self):

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw """Serialize document into XML on stdout"""

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw original = etree.tostring(self.original_document)

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw result = etree.tostring(self.document)

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw if original != result:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw self.document.write(sys.stdout)

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw def affect(self, args=sys.argv[1:], output=True):

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw """Affect an SVG document with a callback effect"""

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw self.svg_file = args[-1]

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw self.getoptions(args)

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw self.parse()

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw self.getposinlayer()

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw self.getselected()

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw self.getdocids()

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw self.effect()

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw if output: self.output()

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw def uniqueId(self, old_id, make_new_id = True):

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw new_id = old_id

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw if make_new_id:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw while new_id in self.doc_ids:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw new_id += random.choice('0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ')

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw self.doc_ids[new_id] = 1

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw return new_id

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw def xpathSingle(self, path):

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw try:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw retval = self.document.xpath(path, namespaces=NSS)[0]

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw except:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw errormsg(_("No matching node for expression: %s") % path)

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw retval = None

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw return retval

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw #a dictionary of unit to user unit conversion factors

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw __uuconv = {'in':96.0, 'pt':1.33333333333, 'px':1.0, 'mm':3.77952755913, 'cm':37.7952755913,

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw 'm':3779.52755913, 'km':3779527.55913, 'pc':16.0, 'yd':3456.0 , 'ft':1152.0}

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw # Fault tolerance for lazily defined SVG

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw def getDocumentWidth(self):

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw width = self.document.getroot().get('width')

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw if width:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw return width

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw else:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw viewbox = self.document.getroot().get('viewBox')

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw if viewbox:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw return viewbox.split()[2]

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw else:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw return '0'

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw # Fault tolerance for lazily defined SVG

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw def getDocumentHeight(self):

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw height = self.document.getroot().get('height')

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw if height:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw return height

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw else:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw viewbox = self.document.getroot().get('viewBox')

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw if viewbox:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw return viewbox.split()[3]

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw else:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw return '0'

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw # Function returns the unit used for the values in SVG.

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw # For lack of an attribute in SVG that explicitly defines what units are used for SVG coordinates,

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw # try to calculate the unit from the SVG width and SVG viewbox.

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw # Defaults to 'px' units.

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw def getDocumentUnit(self):

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw svgunit = 'px' #default to pixels

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw svgwidth = self.getDocumentWidth()

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw viewboxstr = self.document.getroot().get('viewBox')

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw if viewboxstr and svgwidth is not None:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw unitmatch = re.compile('(%s)$' % '|'.join(self.__uuconv.keys()))

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw param = re.compile(r'(([-+]?[0-9]+(\.[0-9]*)?|[-+]?\.[0-9]+)([eE][-+]?[0-9]+)?)')

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw p = param.match(svgwidth)

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw u = unitmatch.search(svgwidth)

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw width = 100 #default

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw viewboxwidth = 100 #default

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw svgwidthunit = 'px' #default assume 'px' unit

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw if p:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw width = float(p.string[p.start():p.end()])

fa9e4066f08beec538e775443c5be79dd423fcabahrens else:

fa9e4066f08beec538e775443c5be79dd423fcabahrens errormsg(_("SVG Width not set correctly! Assuming width = 100"))

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw if u:

fa9e4066f08beec538e775443c5be79dd423fcabahrens svgwidthunit = u.string[u.start():u.end()]

fa9e4066f08beec538e775443c5be79dd423fcabahrens

fa9e4066f08beec538e775443c5be79dd423fcabahrens viewboxnumbers = []

fa9e4066f08beec538e775443c5be79dd423fcabahrens for t in viewboxstr.split():

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw try:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw viewboxnumbers.append(float(t))

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw except ValueError:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw pass

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw if len(viewboxnumbers) == 4: #check for correct number of numbers

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw viewboxwidth = viewboxnumbers[2]

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw

fa9e4066f08beec538e775443c5be79dd423fcabahrens svgunitfactor = self.__uuconv[svgwidthunit] * width / viewboxwidth

fa9e4066f08beec538e775443c5be79dd423fcabahrens

fa9e4066f08beec538e775443c5be79dd423fcabahrens # try to find the svgunitfactor in the list of units known. If we don't find something, ...

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw eps = 0.01 #allow 1% error in factor

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw for key in self.__uuconv:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw if are_near_relative(self.__uuconv[key], svgunitfactor, eps):

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw #found match!

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw svgunit = key;

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw return svgunit

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw def unittouu(self, string):

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw '''Returns userunits given a string representation of units in another system'''

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw unit = re.compile('(%s)$' % '|'.join(self.__uuconv.keys()))

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw param = re.compile(r'(([-+]?[0-9]+(\.[0-9]*)?|[-+]?\.[0-9]+)([eE][-+]?[0-9]+)?)')

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw if string is not None:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw p = param.match(string)

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw u = unit.search(string)

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw if p:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw retval = float(p.string[p.start():p.end()])

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw else:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw retval = 0.0

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw if u:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw try:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw return retval * (self.__uuconv[u.string[u.start():u.end()]] / self.__uuconv[self.getDocumentUnit()])

2459a9eaca6b6525c76289d22ffe4c96be1956d6marks except KeyError:

2459a9eaca6b6525c76289d22ffe4c96be1956d6marks pass

fa9e4066f08beec538e775443c5be79dd423fcabahrens else: # default assume 'px' unit

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw return retval / self.__uuconv[self.getDocumentUnit()]

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw else:

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw retval = None

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw return retval

fa9e4066f08beec538e775443c5be79dd423fcabahrens

2459a9eaca6b6525c76289d22ffe4c96be1956d6marks def uutounit(self, val, unit):

2459a9eaca6b6525c76289d22ffe4c96be1956d6marks return val / (self.__uuconv[unit] / self.__uuconv[self.getDocumentUnit()])

2459a9eaca6b6525c76289d22ffe4c96be1956d6marks

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw def addDocumentUnit(self, value):

2459a9eaca6b6525c76289d22ffe4c96be1956d6marks ''' Add document unit when no unit is specified in the string '''

2459a9eaca6b6525c76289d22ffe4c96be1956d6marks try:

2459a9eaca6b6525c76289d22ffe4c96be1956d6marks float(value)

2459a9eaca6b6525c76289d22ffe4c96be1956d6marks return value + self.getDocumentUnit()

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw except ValueError:

fa9e4066f08beec538e775443c5be79dd423fcabahrens return value

fa9e4066f08beec538e775443c5be79dd423fcabahrens

da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw