145 lines
7.1 KiB
Python
145 lines
7.1 KiB
Python
|
#!/usr/bin/env python3
|
||
|
|
'''
|
||
|
|
This extension Create a eraser layer
|
||
|
|
|
||
|
|
Copyright (C) 2012 Jabiertxo Arraiza, jabier.arraiza@marker.es
|
||
|
|
|
||
|
|
Version 0.4 - Eraser
|
||
|
|
|
||
|
|
TODO:
|
||
|
|
Comment Better!!!
|
||
|
|
|
||
|
|
CHANGE LOG
|
||
|
|
0.1 Start 30/07/2012
|
||
|
|
0.3 fix bug with borders
|
||
|
|
|
||
|
|
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
|
||
|
|
'''
|
||
|
|
|
||
|
|
import inkex
|
||
|
|
import sys
|
||
|
|
from lxml import etree
|
||
|
|
|
||
|
|
class EraserLayer(inkex.EffectExtension):
|
||
|
|
|
||
|
|
#inserta el flltro que pasa a negro la mascara
|
||
|
|
def insertFilter(self, svg):
|
||
|
|
xpathStr = '//filter[@id="Decolorize_0001"]'
|
||
|
|
filterElement = svg.xpath(xpathStr, namespaces=inkex.NSS)
|
||
|
|
if filterElement == []:
|
||
|
|
xpathStr = '//svg:defs'
|
||
|
|
defs = svg.xpath(xpathStr, namespaces=inkex.NSS)
|
||
|
|
flt = etree.SubElement(defs[0],inkex.addNS('filter','svg'))
|
||
|
|
for k, v in [('id', 'Decolorize_0001'), ('color-interpolation-filters', 'sRGB'),
|
||
|
|
('height', '100'), ('width', '100'),
|
||
|
|
('x', '-50'), ('y', '-50')]:
|
||
|
|
flt.set(k, v)
|
||
|
|
fltColorMatrix = etree.SubElement(flt,inkex.addNS('feColorMatrix','svg'))
|
||
|
|
for k, v in [('id', 'feColorMatrix_0001'),('values','1'), ('in', 'SourceGraphic'),
|
||
|
|
('type', 'saturate'), ('result', 'result2')]:
|
||
|
|
fltColorMatrix.set(k, v)
|
||
|
|
fltFlood = etree.SubElement(flt,inkex.addNS('feFlood','svg'))
|
||
|
|
for k, v in [('id', 'feFlood_0001'),('flood-color','rgb(255,255,255)'), ('flood-opacity', '1'),
|
||
|
|
('result', 'result1')]:
|
||
|
|
fltFlood.set(k, v)
|
||
|
|
fltComposite = etree.SubElement(flt,inkex.addNS('feComposite','svg'))
|
||
|
|
for k, v in [('id', 'feComposite_0001'),('operator', 'atop'),('in2', 'SourceGraphic')
|
||
|
|
,('k2', '1'),('result', 'result4')]:
|
||
|
|
fltComposite.set(k, v)
|
||
|
|
|
||
|
|
fltInverse = etree.SubElement(defs[0],inkex.addNS('filter','svg'))
|
||
|
|
for k, v in [('id', 'Inverse_0001'), ('color-interpolation-filters', 'sRGB'),
|
||
|
|
('height', '100'), ('width', '100'),
|
||
|
|
('x', '-50'), ('y', '-50')]:
|
||
|
|
fltInverse.set(k, v)
|
||
|
|
fltColorMatrixInverse = etree.SubElement(fltInverse,inkex.addNS('feColorMatrix','svg'))
|
||
|
|
for k, v in [('id', 'feColorMatrixInverse_0001'),('values','1'),
|
||
|
|
('type', 'saturate'), ('result', 'fbSourceGraphic')]:
|
||
|
|
fltColorMatrixInverse.set(k, v)
|
||
|
|
fltColorMatrixInverse = etree.SubElement(fltInverse,inkex.addNS('feColorMatrix','svg'))
|
||
|
|
for k, v in [('id', 'feColorMatrixInverse_0002'),('in','fbSourceGraphic'),
|
||
|
|
('values', '-1 0 0 0 1 0 -1 0 0 1 0 0 -1 0 1 0 0 0 1 0 ')]:
|
||
|
|
fltColorMatrixInverse.set(k, v)
|
||
|
|
|
||
|
|
#Inserta la mascara desde el grupo eraser
|
||
|
|
def insertMask(self, idLayer, svg):
|
||
|
|
xpathStr = '//mask[@id="MaskEraser_' + idLayer + '"]'
|
||
|
|
maskElement = svg.xpath(xpathStr, namespaces=inkex.NSS)
|
||
|
|
if maskElement == []:
|
||
|
|
xpathStr = '//svg:defs'
|
||
|
|
defs = svg.xpath(xpathStr, namespaces=inkex.NSS)
|
||
|
|
msk = etree.SubElement(defs[0],inkex.addNS('mask','svg'))
|
||
|
|
for k, v in [('id', 'Eraser_' + idLayer), ('maskUnits', 'userSpaceOnUse')]:
|
||
|
|
msk.set(k, v)
|
||
|
|
use = etree.SubElement(msk,inkex.addNS('use','svg'))
|
||
|
|
for k, v in [('id', 'Use_Eraser_' + idLayer), ('{http://www.w3.org/1999/xlink}href',
|
||
|
|
"#EraserLayer_" + idLayer),('style',"filter:url(#Inverse_0001)")]:
|
||
|
|
use.set(k, v)
|
||
|
|
rct = etree.SubElement(msk,inkex.addNS('rect','svg'))
|
||
|
|
for k, v in [('id', 'Background_' + idLayer), ('x', '-25000000'),
|
||
|
|
('y', '-25000000'), ('width', '50000000'), ('height', '50000000'),
|
||
|
|
('style', 'fill:#FFFFFF;fill-opacity:1')]:
|
||
|
|
rct.set(k, v)
|
||
|
|
|
||
|
|
|
||
|
|
##crea el grupo contenedor que hara de borrador
|
||
|
|
def createEraserLayer(self, layer,idLayer):
|
||
|
|
container = etree.Element("g")
|
||
|
|
container.set("id","ContainerEraserLayer_" + idLayer)
|
||
|
|
container.set('style',"opacity:0.000000000000000000000000000000000000000000000001")
|
||
|
|
container.set("{http://www.inkscape.org/namespaces/inkscape}groupmode","layer")
|
||
|
|
container.set("{http://www.inkscape.org/namespaces/inkscape}label", "[container eraser] " + layer[0].get("{http://www.inkscape.org/namespaces/inkscape}label"))
|
||
|
|
for position, item in enumerate(layer[0].getparent().getchildren()):
|
||
|
|
if item == layer[0]:
|
||
|
|
break;
|
||
|
|
layer[0].getparent().insert(position+1,container)
|
||
|
|
eraser = etree.Element("g")
|
||
|
|
eraser.set("id","EraserLayer_" + idLayer)
|
||
|
|
eraser.set('style',"filter:url(#Decolorize_0001)")
|
||
|
|
eraser.set('transform',"rotate(360)")
|
||
|
|
eraser.set("{http://www.inkscape.org/namespaces/inkscape}groupmode","layer")
|
||
|
|
eraser.set("{http://www.inkscape.org/namespaces/inkscape}label", "[eraser] " + layer[0].get("{http://www.inkscape.org/namespaces/inkscape}label"))
|
||
|
|
layer[0].set('mask',"url(#Eraser_" + idLayer + ")")
|
||
|
|
selected = []
|
||
|
|
for id, node in self.svg.selected.items():
|
||
|
|
eraser.insert(1,node)
|
||
|
|
container.insert(1,eraser)
|
||
|
|
|
||
|
|
def effect(self):
|
||
|
|
saveout = sys.stdout
|
||
|
|
sys.stdout = sys.stderr
|
||
|
|
svg = self.document.getroot()
|
||
|
|
xpathStr = '//sodipodi:namedview'
|
||
|
|
namedview = svg.xpath(xpathStr, namespaces=inkex.NSS)
|
||
|
|
idLayer = namedview[0].get('{http://www.inkscape.org/namespaces/inkscape}current-layer');
|
||
|
|
if idLayer.startswith("[mask] ") == False and idLayer.startswith("[eraser] ") == False:
|
||
|
|
xpathStr = '//svg:g[@id="EraserLayer_'+idLayer+'"]'
|
||
|
|
filterElement = svg.xpath(xpathStr, namespaces=inkex.NSS)
|
||
|
|
if filterElement == []:
|
||
|
|
xpathStr = '//svg:g[@id="'+idLayer+'"]'
|
||
|
|
layer = svg.xpath(xpathStr, namespaces=inkex.NSS)
|
||
|
|
if len(layer) > 0 and layer[0] is not None and layer[0].get("{http://www.inkscape.org/namespaces/inkscape}label") is not None:
|
||
|
|
self.insertFilter(svg)
|
||
|
|
self.insertMask(idLayer, svg)
|
||
|
|
self.createEraserLayer(layer,idLayer)
|
||
|
|
else:
|
||
|
|
print ("Layer not found, Maybe insisde a group?")
|
||
|
|
else:
|
||
|
|
for id, node in self.svg.selected.items():
|
||
|
|
filterElement[0].insert(1,node)
|
||
|
|
sys.stdout = saveout
|
||
|
|
|
||
|
|
if __name__ == '__main__':
|
||
|
|
EraserLayer().run()
|