99 lines
3.2 KiB
Python
Executable file
99 lines
3.2 KiB
Python
Executable file
#!/usr/bin/env python3
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# coding=utf-8
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# Copyright (C) 2011 Karlisson Bezerra <contact@hacktoon.com>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#
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"""
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Save an SVG file into an html canvas file.
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"""
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import inkex
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import ink2canvas_lib.svg as svg
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from ink2canvas_lib.canvas import Canvas
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class Html5Canvas(inkex.OutputExtension):
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"""Creates a canvas output"""
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def save(self, stream):
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svg_root = self.document.getroot()
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width = self.svg.viewbox_width
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height = self.svg.viewbox_height
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canvas = Canvas(self, width, height)
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self.walk_tree(svg_root, canvas)
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stream.write(canvas.output().encode("utf-8"))
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def get_gradient_defs(self, elem):
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"""Return the gradient information"""
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url_id = elem.get_gradient_href()
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# get the gradient element
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gradient = self.svg.getElementById(url_id)
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# get the color stops
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gstops = gradient.href
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colors = []
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for stop in gstops:
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colors.append(stop.style)
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if gradient.get("r"):
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return svg.RadialGradientDef(gradient, colors)
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return svg.LinearGradientDef(gradient, colors)
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@staticmethod
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def _shape_from_node(node, canvas):
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"""
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Make a canvas shape object for the given node. Returns `None` if
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the node is not an SVG shape element.
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@rtype svg.AbstractShape or NoneType
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"""
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try:
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prefix, _brace_, command = node.tag.partition("}")
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except AttributeError:
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return None # skip comments
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if prefix != "{http://www.w3.org/2000/svg":
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return None
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# makes pylint happy
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assert _brace_ == "}"
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cls = getattr(svg, command.capitalize(), None)
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if not (isinstance(cls, type) and issubclass(cls, svg.AbstractShape)):
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return None
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return cls(command, node, canvas)
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def walk_tree(self, root, canvas):
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"""Walk throug the whole svg tree"""
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for node in root:
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elem = self._shape_from_node(node, canvas)
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if elem is None:
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continue
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gradient = None
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if elem.has_gradient():
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gradient = self.get_gradient_defs(elem)
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elem.start(gradient)
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try:
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elem.draw()
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except ValueError as error:
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# print out the reason if any element can not be exported
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canvas.write("// " + str(error))
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continue
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self.walk_tree(node, canvas)
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elem.end()
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if __name__ == "__main__":
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Html5Canvas().run()
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