72 lines
2.5 KiB
Python
72 lines
2.5 KiB
Python
#!/usr/bin/env python3
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import sys
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import os
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import argparse
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import inkex
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import shutil
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from inkex import Rectangle
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from PIL import Image
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import base64
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from io import BytesIO, StringIO
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import subprocess
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from lxml import etree
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class WebpImport(inkex.InputExtension):
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def add_arguments(self, pars):
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pars.add_argument('inputfile')
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def effect(self):
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if os.name == 'nt':
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tmp = os.getenv('TEMP') + '\\'
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else:
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tmp = '/tmp/'
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convertfile = os.path.join(tmp, "webp.png")
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if shutil.which('magick'):
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command = "magick \"%s\" \"%s\" " % (self.options.inputfile, convertfile)
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elif shutil.which('convert'):
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command = "convert \"%s\" \"%s\" " % (self.options.inputfile, convertfile)
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else:
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inkex.errormsg('ImageMagick does not appear to be installed.')
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exit()
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p = subprocess.Popen(command, shell=True)
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return_code = p.wait()
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#inkex.utils.debug("command:" + command)
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#inkex.utils.debug("Errorcode:" + str(return_code))
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try:
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img = Image.open(convertfile)
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except Image.DecompressionBombError as e: #we could also increse PIL.Image.MAX_IMAGE_PIXELS = some large int
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self.msg("Error. Image is too large. Reduce DPI and try again!")
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exit(1)
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output_buffer = BytesIO()
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img.save(output_buffer, format='PNG')
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width, height = img.size
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byte_data = output_buffer.getvalue()
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base64_str = base64.b64encode(byte_data).decode('UTF-8')
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webp = etree.SubElement(Rectangle(), '{http://www.w3.org/2000/svg}image')
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webp.attrib['x'] = str(0)
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webp.attrib['y'] = str(0)
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webp.attrib['width'] = str(width)
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webp.attrib['height'] = str(height)
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webp.attrib['{http://www.w3.org/1999/xlink}href'] = "data:image/png;base64,{}".format(base64_str)
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base = ('<svg xmlns="http://www.w3.org/2000/svg"'
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' width="{}px" height="{}px" viewBox="{} {} {} {}"/>'
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).format(width, height, 0, 0, width, height)
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output = StringIO(base)
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tree = etree.parse(output)
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output.close()
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tree.getroot().append(webp)
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svgfile = os.path.join(tmp, "webp.svg")
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with open(svgfile, 'w') as file:
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tree.write(svgfile)
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with open(svgfile, 'r') as newfile:
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sys.stdout.write(newfile.read())
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def load(self, stream):
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return str(stream.read())
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if __name__ == '__main__':
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WebpImport().run()
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