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#!/usr/bin/env python
'''
Copyright (C) 2009 Aurelio A. Heckert, aurium (a) gmail dot 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
'''
# standard library
import sys
import math
import re
import string
# local library
import inkex
import simplestyle
from pathmodifier import zSort
class InterpAttG(inkex.Effect):
def __init__(self):
inkex.Effect.__init__(self)
self.OptionParser.add_option("-a", "--att",
action="store", type="string",
dest="att", default="fill",
help="Attribute to be interpolated.")
self.OptionParser.add_option("-o", "--att-other",
action="store", type="string",
dest="att_other",
help="Other attribute (for a limited UI).")
self.OptionParser.add_option("-t", "--att-other-type",
action="store", type="string",
dest="att_other_type",
help="The other attribute type.")
self.OptionParser.add_option("-w", "--att-other-where",
action="store", type="string",
dest="att_other_where",
help="That is a tag attribute or a style attribute?")
self.OptionParser.add_option("-s", "--start-val",
action="store", type="string",
dest="start_val", default="#F00",
help="Initial interpolation value.")
self.OptionParser.add_option("-e", "--end-val",
action="store", type="string",
dest="end_val", default="#00F",
help="End interpolation value.")
self.OptionParser.add_option("-u", "--unit",
action="store", type="string",
dest="unit", default="color",
help="Values unit.")
self.OptionParser.add_option("--zsort",
action="store", type="inkbool",
dest="zsort", default=True,
help="use z-order instead of selection order")
self.OptionParser.add_option("--tab",
action="store", type="string",
dest="tab",
help="The selected UI-tab when OK was pressed")
def getColorValues(self):
sv = string.replace( self.options.start_val, '#', '' )
ev = string.replace( self.options.end_val, '#', '' )
# index 0: start color, index 1: end color
self.R, self.G, self.B = [0,0],[0,0],[0,0]
raw_colors = [sv, ev]
for i in [0,1]:
if re.search('\s|,', raw_colors[i]):
# There are separators. That must be an integer RGB color definition.
raw_colors[i] = re.split( '[\s,]+', raw_colors[i])
self.R[i] = int(raw_colors[i][0])
self.G[i] = int(raw_colors[i][1])
self.B[i] = int(raw_colors[i][2])
else:
# There is no separator. That must be a Hex RGB color definition.
if len(raw_colors[i]) == 3:
self.R[i] = int(raw_colors[i][0] + raw_colors[i][0], 16)
self.G[i] = int(raw_colors[i][1] + raw_colors[i][1], 16)
self.B[i] = int(raw_colors[i][2] + raw_colors[i][2], 16)
else: # the len must be 6
self.R[i] = int( raw_colors[i][0] + raw_colors[i][1], 16)
self.G[i] = int( raw_colors[i][2] + raw_colors[i][3], 16)
self.B[i] = int( raw_colors[i][4] + raw_colors[i][5], 16)
self.R_inc = (self.R[1] - self.R[0]) / float(self.tot_el - 1)
self.G_inc = (self.G[1] - self.G[0]) / float(self.tot_el - 1)
self.B_inc = (self.B[1] - self.B[0]) / float(self.tot_el - 1)
self.R_cur = self.R[0]
self.G_cur = self.G[0]
self.B_cur = self.B[0]
def getNumberValues(self):
sv = self.options.start_val.replace(",", ".")
ev = self.options.end_val.replace(",", ".")
unit = self.options.unit
if unit != 'none':
sv = self.unittouu(sv + unit)
ev = self.unittouu(ev + unit)
else:
sv = float(sv)
ev = float(ev)
self.val_cur = self.val_ini = sv
self.val_end = ev
self.val_inc = (ev - sv)/float(self.tot_el - 1)
def getTotElements(self):
self.tot_el = 0
self.collection = None
if len( self.selected ) == 0:
return False
if len( self.selected ) > 1:
# multiple selection
if self.options.zsort:
sorted_ids = zSort(self.document.getroot(),self.selected.keys())
else:
sorted_ids = self.options.ids
self.collection = list(sorted_ids)
for i in sorted_ids:
path = '//*[@id="%s"]' % i
self.collection[self.tot_el] = self.document.xpath(path, namespaces=inkex.NSS)[0]
self.tot_el += 1
else:
# must be a group
self.collection = self.selected[ self.options.ids[0] ]
for i in self.collection:
self.tot_el += 1
def effect(self):
if self.options.att == 'other':
if self.options.att_other is not None:
self.inte_att = self.options.att_other
else:
inkex.errormsg(_("You selected 'Other'. Please enter an attribute to interpolate."))
sys.exit(0)
self.inte_att_type = self.options.att_other_type
self.where = self.options.att_other_where
else:
self.inte_att = self.options.att
if self.inte_att == 'width':
self.inte_att_type = 'float'
self.where = 'tag'
elif self.inte_att == 'height':
self.inte_att_type = 'float'
self.where = 'tag'
elif self.inte_att == 'scale':
self.inte_att_type = 'float'
self.where = 'transform'
elif self.inte_att == 'trans-x':
self.inte_att_type = 'float'
self.where = 'transform'
elif self.inte_att == 'trans-y':
self.inte_att_type = 'float'
self.where = 'transform'
elif self.inte_att == 'fill':
self.inte_att_type = 'color'
self.where = 'style'
elif self.inte_att == 'opacity':
self.inte_att_type = 'float'
self.where = 'style'
self.getTotElements()
if self.inte_att_type == 'color':
self.getColorValues()
else:
self.getNumberValues()
if self.collection is None:
inkex.errormsg( _('There is no selection to interpolate' ))
return False
for node in self.collection:
if self.inte_att_type == 'color':
val = 'rgb('+ \
str(int(round(self.R_cur))) +','+ \
str(int(round(self.G_cur))) +','+ \
str(int(round(self.B_cur))) +')'
else:
if self.inte_att_type == 'float':
val = self.val_cur
else: # inte_att_type == 'int'
val = int(round(self.val_cur))
if self.where == 'style':
s = node.get('style')
re_find = '(^|;)'+ self.inte_att +':[^;]*(;|$)'
if re.search( re_find, s ):
s = re.sub( re_find, '\\1'+ self.inte_att +':'+ str(val) +'\\2', s )
else:
s += ';'+ self.inte_att +':'+ str(val)
node.set( 'style', s )
elif self.where == 'transform':
t = node.get('transform')
if t == None: t = ""
if self.inte_att == 'trans-x':
val = "translate("+ str(val) +",0)"
elif self.inte_att == 'trans-y':
val = "translate(0,"+ str(val) +")"
else:
val = self.inte_att + "("+ str(val) +")"
node.set( 'transform', t +" "+ val )
else: # self.where == 'tag':
if ":" in self.inte_att:
ns, attrib = self.inte_att.split(":")
node.set(inkex.addNS(attrib, ns), str(val))
else:
node.set( self.inte_att, str(val) )
if self.inte_att_type == 'color':
self.R_cur += self.R_inc
self.G_cur += self.G_inc
self.B_cur += self.B_inc
else:
self.val_cur += self.val_inc
return True
if __name__ == '__main__':
e = InterpAttG()
if e.affect():
exit(0)
else:
exit(1)
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