195 lines
9.1 KiB
Python
195 lines
9.1 KiB
Python
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#!/usr/bin/env python3
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import sys
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import inkex
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import os
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import base64
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import urllib.request as urllib
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from PIL import Image
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from io import BytesIO
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from lxml import etree
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from inkex import Color
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"""
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Extension for InkScape 1.X
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Features
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- Primitive - Reproducing images with geometric primitives written in Go.
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Author: Mario Voigt / FabLab Chemnitz
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Mail: mario.voigt@stadtfabrikanten.org
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Date: 21.08.2020
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Last patch: 23.08.2020
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License: GNU GPL v3
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Used version of Primitive: https://github.com/fogleman/primitive/commit/0373c216458be1c4b40655b796a3aefedf8b7d23
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"""
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class Primitive (inkex.EffectExtension):
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def rgbToHex(self, pickerColor):
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longcolor = int(pickerColor)
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if longcolor < 0:
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longcolor = longcolor & 0xFFFFFFFF
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return '#' + format(longcolor >> 8, '06X')
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def checkImagePath(self, node):
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xlink = node.get('xlink:href')
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if xlink and xlink[:5] == 'data:':
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# No need, data alread embedded
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return
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url = urllib.urlparse(xlink)
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href = urllib.url2pathname(url.path)
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# Primary location always the filename itself.
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path = self.absolute_href(href or '')
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# Backup directory where we can find the image
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if not os.path.isfile(path):
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path = node.get('sodipodi:absref', path)
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if not os.path.isfile(path):
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inkex.errormsg('File not found "{}". Unable to embed image.').format(path)
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return
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if (os.path.isfile(path)):
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return path
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def add_arguments(self, pars):
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pars.add_argument("--tab")
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pars.add_argument("--keeporiginal", type=inkex.Boolean, default=False, help="Keep original image on canvas")
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pars.add_argument("--cliprect", type=inkex.Boolean, default=True, help="Draw clipping rectangle")
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pars.add_argument("--n", type=int, default=100, help="Number of shapes")
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pars.add_argument("--m", default=1, help="Mode")
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pars.add_argument("--rep", type=int, default=0,help="Extra shapes/iteration")
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pars.add_argument("--r", type=int, default=256, help="Resize to size before processing (px)")
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pars.add_argument("--s", type=int, default=1024, help="Output image size (px)")
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pars.add_argument("--a", type=int, default=128, help="Color alpha")
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pars.add_argument("--bg_enabled", type=inkex.Boolean, default=True, help="Use average starting background color")
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pars.add_argument("--bg", type=Color, default=255, help="Starting background color")
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pars.add_argument("--j", type=int, default=0, help="Number of parallel workers")
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def effect(self):
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# internal overwrite for scale:
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self.options.scale = 1.0
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if (self.options.ids):
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for node in self.svg.selected.values():
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if node.tag == inkex.addNS('image', 'svg'):
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self.path = self.checkImagePath(node) # This also ensures the file exists
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if self.path is None: # check if image is embedded or linked
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image_string = node.get('{http://www.w3.org/1999/xlink}href')
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# find comma position
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i = 0
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while i < 40:
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if image_string[i] == ',':
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break
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i = i + 1
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image = Image.open(BytesIO(base64.b64decode(image_string[i + 1:len(image_string)])))
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else:
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image = Image.open(self.path)
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if node.get('width')[-1].isdigit() is False or node.get('height')[-1].isdigit() is False:
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inkex.utils.debug("Image seems to have some weird dimensions in XML structure. Please remove units from width and height attributes at <svg:image>")
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return
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parent = node.getparent()
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if parent is not None and parent != self.document.getroot():
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tpc = parent.composed_transform()
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x_offset = tpc.e
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y_offset = tpc.f
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else:
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x_offset = 0.0
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y_offset = 0.0
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# Write the embedded or linked image to temporary directory
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if os.name == "nt":
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exportfile = "Primitive.png"
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else:
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exportfile = "/tmp/Primitive.png"
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if image.mode != 'RGB':
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image = image.convert('RGB')
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image.save(exportfile, "png")
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## Build up Primitive command according to your settings from extension GUI
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if os.name == "nt":
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command = "primitive"
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else:
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command = "./primitive"
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command += " -m " + str(self.options.m)
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command += " -rep " + str(self.options.rep)
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command += " -r " + str(self.options.r)
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command += " -s " + str(self.options.s)
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command += " -a " + str(self.options.a)
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if not self.options.bg_enabled:
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command += " -bg " + self.rgbToHex(self.options.bg)
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command += " -j " + str(self.options.j)
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command += " -i " + exportfile
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command += " -o " + exportfile + ".svg"
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command += " -n " + str(self.options.n)
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#inkex.utils.debug(command)
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# Create the vector new SVG file
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with os.popen(command, "r") as proc:
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result = proc.read()
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#inkex.utils.debug(result)
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# proceed if new SVG file was successfully created
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doc = None
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if os.path.exists(exportfile + ".svg"):
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# Delete the temporary png file again because we do not need it anymore
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if os.path.exists(exportfile):
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os.remove(exportfile)
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# new parse the SVG file and insert it as new group into the current document tree
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doc = etree.parse(exportfile + ".svg").getroot()
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newGroup = self.document.getroot().add(inkex.Group())
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newGroup.attrib['transform'] = "matrix({:0.6f}, 0, 0, {:0.6f}, {:0.6f}, {:0.6f})".format(
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float(node.get('width')) / float(doc.get('width')),
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float(node.get('height')) / float(doc.get('height')),
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float(node.get('x')) + x_offset,
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float(node.get('y')) + y_offset
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)
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newGroup.append(doc)
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# Delete the temporary svg file
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if os.path.exists(exportfile + ".svg"):
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try:
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os.remove(exportfile + ".svg")
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except:
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pass
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else:
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inkex.utils.debug("Error while creating output file! :-( The \"primitive\" executable seems to be missing, has no exec permissions or platform is imcompatible.")
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exit(1)
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#remove the old image or not
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if self.options.keeporiginal is not True:
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node.delete()
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# create clip path to remove the stuffy surroundings
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if self.options.cliprect:
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path = '//svg:defs'
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defslist = self.document.getroot().xpath(path, namespaces=inkex.NSS)
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if len(defslist) > 0:
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defs = defslist[0]
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clipPathData = {inkex.addNS('label', 'inkscape'):'imagetracerClipPath', 'clipPathUnits':'userSpaceOnUse', 'id':'imagetracerClipPath'}
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clipPath = etree.SubElement(defs, 'clipPath', clipPathData)
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#inkex.utils.debug(image.width)
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clipBox = {
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'x':str(0),
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'y':str(0),
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'width':str(doc.get('width')),
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'height':str(doc.get('height')),
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'style':'fill:#000000; stroke:none; fill-opacity:1;'
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}
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etree.SubElement(clipPath, 'rect', clipBox)
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#etree.SubElement(newGroup, 'g', {inkex.addNS('label','inkscape'):'imagetracerjs', 'clip-path':"url(#imagetracerClipPath)"})
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newGroup.getchildren()[0].set('clip-path','url(#imagetracerClipPath)')
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else:
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inkex.utils.debug("No image found for tracing. Please select an image first.")
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if __name__ == '__main__':
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Primitive().run()
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