234 lines
13 KiB
Python
234 lines
13 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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class KVEC (inkex.EffectExtension):
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def checkImagePath(self, element):
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xlink = element.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 = element.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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#General Settings
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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("--fittooriginal", type=inkex.Boolean, default=False, help="Fit to original dimensions")
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pars.add_argument("--debug", type=inkex.Boolean, default=False, help="Enable debug output")
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pars.add_argument("--sysmalloc", type=inkex.Boolean, default=True, help="Use system-malloc routines")
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pars.add_argument("--text", type=inkex.Boolean, default=True, help="Text output")
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pars.add_argument("--font", type=inkex.Boolean, default=True, help="Generate optimized set of parameters")
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pars.add_argument("--sort", default="max", help="Type of sort order for vectors")
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#Geometry/Quality
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pars.add_argument("--grit", type=int, default=0, help="Filter out details smaller than x pixels")
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pars.add_argument("--gapfill", type=int, default=0, help="Gap fill (jumping)")
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pars.add_argument("--centerline", default="off", help="Generates single lines if linewidth small enough")
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pars.add_argument("--bezier", type=inkex.Boolean, default=False, help="Generate Bezier-curves")
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pars.add_argument("--errbez", type=int, default=3, help="Error-Parameter for Bezier-curves")
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pars.add_argument("--reduce", default="orthogonal", help="Type of line reducing")
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pars.add_argument("--overlapp", type=inkex.Boolean, default=False, help="Polygons overlap (1px)")
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pars.add_argument("--smooth", type=inkex.Boolean, default=False, help="Smoothing of polylines")
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pars.add_argument("--winding", default="original", help="Winding")
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pars.add_argument("--high_resolution", type=inkex.Boolean, default=False, help="High vectorization resolution")
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pars.add_argument("--subsampling", type=inkex.Boolean, default=False, help="If enabled, the output vectors are subsampled by a factor of 2. This will reduce the size of the output file and will also result in smoothing the vectors")
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pars.add_argument("--lossless", type=inkex.Boolean, default=False, help="Generate lossless image")
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pars.add_argument("--progressive", type=inkex.Boolean, default=False, help="image is build up from two successive layers (one 'rough' picture without details and one refined picture which contains only details).")
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pars.add_argument("--progressive_gritfactor", type=int, default=2, help="The first layer has a grit-value multiplied by this")
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pars.add_argument("--progressive_colorfactor", type=int, default=2, help="The first layer has a quantize-value divided by this")
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#Colors/Styles
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pars.add_argument("--quantize", type=int, default=32, help="Color quantization")
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pars.add_argument("--delta", type=int, default=0, help="Delta")
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pars.add_argument("--fill", default="solid", help="Fill")
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pars.add_argument("--lwidth", type=int, default=0, help="Line width")
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pars.add_argument("--black", type=inkex.Boolean, default=False, help="Output-color is always black")
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pars.add_argument("--palette", default="optimize", help="Palette")
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pars.add_argument("--color_vectorization", default="normal", help="Color vectorization")
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pars.add_argument("--colspace", default="rgb", help="Colorspace conversion parameters")
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pars.add_argument("--colsep", default="rgb", help="Color separation parameters")
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pars.add_argument("--tcolor_mode", default="none", help="Transparency color")
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pars.add_argument("--tcolor_custom", type=Color, default=255, help="User-defined transparency color (RGB values)")
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pars.add_argument("--vcolor_mode", default="none", help="Pick out regions with color")
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pars.add_argument("--vcolor", type=Color, default=255, help="Region color")
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def effect(self):
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so = self.options
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if (so.ids):
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for element in self.svg.selected.values():
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if element.tag == inkex.addNS('image', 'svg'):
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self.path = self.checkImagePath(element) # 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 = element.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 element.get('width')[-1].isdigit() is False or element.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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# Write the embedded or linked image to temporary directory
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if os.name == "nt":
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exportfile = "kvec.png"
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else:
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exportfile = "/tmp/kvec.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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#some crash avoidings
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if so.lossless is True:
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so.color_vectorization = "normal"
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so.bezier = False
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so.font = False
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so.black = False
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if so.high_resolution is True:
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so.overlapp = False
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## Build up command according to your settings from extension GUI
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if os.name == "nt":
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command = "kvec.exe"
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else:
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command = "./kvec"
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command += " " + exportfile #input
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command += " " + exportfile + ".svg" #output
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command += " -format svg"
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#General Settings
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if so.sysmalloc is False: command += " -sysmalloc off"
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if so.font is True: command += " -font"
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if so.text is False: command += " -text off"
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command += " -sort " + so.sort
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#Geometry/Quality
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if so.grit > 0: command += " -grit " + str(so.grit)
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command += " -gapfill " + str(so.gapfill)
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command += " -centerline " + so.centerline
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command += " -winding " + so.winding
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if so.bezier is True: command += " -bezier"
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command += " -errbez " + str(so.errbez)
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if so.overlapp is True: command += " -overlapp"
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if so.smooth is True: command += " -smooth on"
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command += " -reduce " + str(so.reduce)
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if so.high_resolution is True: command += " -resolution high"
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if so.subsampling is True: command += " -subsampling"
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if so.lossless is True: command += " -lossless"
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if so.progressive is True:
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command += " -progressive gritfactor " + str(so.progressive_gritfactor)
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command += " -progressive colorfactor " + str(so.progressive_colorfactor)
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#Colors/Styles
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command += " -quantize " + str(so.quantize)
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command += " -delta " + str(so.delta)
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command += " -fill " + so.fill
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command += " -lwidth " + str(so.lwidth)
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command += " -palette " + so.palette
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if so.black is True: command += " -black"
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if so.color_vectorization != "normal": command += " -" + so.color_vectorization
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command += " -colspace " + so.colspace
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command += " -colsep " + so.colsep
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if so.tcolor_mode == "auto":
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command += " -tcolor auto"
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elif so.tcolor_mode == "custom":
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command += " -tcolor color {} {} {}".format(so.tcolor_custom.red, so.tcolor_custom.green, so.tcolor_custom.blue)
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if so.vcolor_mode == "matching":
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command += " -vcolor {} {} {}".format(so.vcolor.red, so.vcolor.green, so.vcolor.blue)
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elif so.vcolor_mode == "not_matching":
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command += " -vcolor {} {} {}".format(-so.vcolor.red, -so.vcolor.green, -so.vcolor.blue)
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#some debug stuff
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if so.debug is True:
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command += " -debug all"
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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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if so.debug is True: 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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parent = element.getparent()
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idx = parent.index(element)
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#newGroup = self.document.getroot().add(inkex.Group())
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newGroup = inkex.Group()
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parent.insert(idx + 1,newGroup)
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for child in doc:
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newGroup.append(child)
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#doc.get('height')
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#doc.get('width')
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#doc.get('viewBox')
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if so.fittooriginal is True: #fitting does not work in all cases so we make it available as option
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bbox = newGroup.bounding_box()
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newGroup.attrib['transform'] = "matrix({:0.6f}, 0, 0, {:0.6f}, {:0.6f}, {:0.6f})".format(
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#float(element.get('width')) / float(doc.get('width')),
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#float(element.get('height')) / float(doc.get('height')),
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float(element.get('width')) / bbox.width,
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float(element.get('height')) / bbox.height,
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float(element.get('x')) - (float(element.get('width')) / bbox.width) * bbox.left,
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float(element.get('y')) - (float(element.get('height')) / bbox.height) * bbox.top
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)
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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 \"kvec\" 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 so.keeporiginal is not True:
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element.delete()
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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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KVEC().run()
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