import sys

sys.path.append('/usr/share/inkscape/extensions')

import inkex

from simplestyle import *

from xml.etree import ElementTree as ET

from math import sqrt

import gettext

_ = gettext.gettext

def printDebug(string):

inkex.errormsg(_(string))

def drawVerticalGuides(division,w,h,edges,parent):

if (division > 0):

if (edges):

var = 1

else:

var = 0

for v in range(0,division-1+2*var):

# setting up the guide's attributes (id is generated automatically)

position = str(round((w / division) + (v - var) * (w / division),4)) + ",0"

orientation = str(round(h,4)) + ",0"

createGuide(position,orientation,parent)

def drawHorizontalGuides(division,w,h,edges,parent):

if (division > 0):

if (edges):

var = 1

else:

var = 0

for x in range(0,division-1+2*var):

# setting up the guide's attributes (id is generated automatically)

position = "0," + str(round((h / division) + (x - var) * (h / division),4))

orientation = "0," + str(round(w,4))

createGuide(position,orientation,parent)

def createGuide(position,orientation,parent):

# Create a sodipodi:guide node

# (look into inkex's namespaces to find 'sodipodi' value in order to make a "sodipodi:guide" tag)

# see NSS array in file inkex.py for the other namespaces

inkex.etree.SubElement(parent,'{http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd}guide',{'position':position,'orientation':orientation})

def getVerticalDivisionsFromPreset(preset):

# take a "string1;string2" preset

# and return "string1"

str_array = preset.split(';')

result = int(str_array[0])

return result

def getHorizontalDivisionsFromPreset(preset):

# take a "string1;string2" preset

# and return "string2"

str_array = preset.split(';')

result = int(str_array[1])

return result

class Guides_Creator(inkex.Effect):

def __init__(self):

"""

# Call the base class constructor.

inkex.Effect.__init__(self)

# Define string option "--preset" with default value 'custom'.

self.OptionParser.add_option('--preset',

action = 'store',type = 'string',

dest = 'preset',default = 'custom',

help = 'Preset')

# Define string option "--vertical_guides" with default value '0'.

self.OptionParser.add_option('--vertical_guides',

action = 'store',type = 'string',

dest = 'vertical_guides',default = 0,

help = 'Vertical guides each:')

# Define string option "--horizontal_guides" with default value '0'.

self.OptionParser.add_option('--horizontal_guides',

action = 'store',type = 'string',

dest = 'horizontal_guides',default = 0,

help = 'Horizontal guides each:')

# Define string option "--start_from_edges" with default value False.

self.OptionParser.add_option('--start_from_edges',

action = 'store',type = 'inkbool',

dest = 'start_from_edges',default = False,

help = 'Start from edges')

# Define string option "--delete_existing_guides" with default value False.

self.OptionParser.add_option('--delete_existing_guides',

action = 'store',type = 'inkbool',

dest = 'delete_existing_guides',default = False,

help = 'Delete existing guides')

def effect(self):

# Get script's options value.

from_edges = self.options.start_from_edges

delete_existing = self.options.delete_existing_guides

h_division = int(self.options.horizontal_guides)

v_division = int(self.options.vertical_guides)

preset = self.options.preset

# Get access to main SVG document element and get its dimensions.

svg = self.document.getroot()

# getting the width and height attributes of the canvas

width = inkex.unittouu(svg.get('width'))

height = inkex.unittouu(svg.attrib['height'])

# getting the parent tag of the guide

nv = self.document.xpath('/svg:svg/sodipodi:namedview',namespaces=inkex.NSS)[0]

if (delete_existing):

# getting all the guides

children = self.document.xpath('/svg:svg/sodipodi:namedview/sodipodi:guide',namespaces=inkex.NSS)

# removing each guides

for element in children:

nv.remove(element)

if (preset == 'custom'):

# creating vertical guides

drawVerticalGuides(v_division,width,height,from_edges,nv)

# creating horizontal guides

drawHorizontalGuides(h_division,width,height,from_edges,nv)

elif (preset == 'golden'):

gold = (1 + sqrt(5)) / 2

# horizontal golden guides

position1 = '0,' + str(height / gold)

position2 = '0,'+ str(height - (height / gold))

h_orientation = '0,' + str(round(width,4))

createGuide(position1,h_orientation,nv)

createGuide(position2,h_orientation,nv)

# vertical golden guides

position1 = str(width / gold) + ',0'

position2 = str(width - (width / gold)) + ',0'

v_orientation = str(round(height,4)) + ',0'

createGuide(position1,v_orientation,nv)

createGuide(position2,v_orientation,nv)

if (from_edges):

# horizontal borders

createGuide('0,' + str(height),h_orientation,nv)

createGuide(str(height) + ',0',h_orientation,nv)

# horizontal borders

createGuide('0,' + str(width),v_orientation,nv)

createGuide(str(width) + ',0',v_orientation,nv)

else:

v_division = getVerticalDivisionsFromPreset(preset)

h_division = getHorizontalDivisionsFromPreset(preset)

drawVerticalGuides(v_division,width,height,from_edges,nv)

drawHorizontalGuides(h_division,width,height,from_edges,nv)

effect = Guides_Creator()

effect.affect()