90 lines
2.7 KiB
Python
Executable File
90 lines
2.7 KiB
Python
Executable File
#!/usr/bin/env python3
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# Copyright (C) 2016 Florian Festi
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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 3 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, see <http://www.gnu.org/licenses/>.
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from __future__ import annotations
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import re
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from xml.etree import ElementTree
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ElementTree.register_namespace("", "http://www.w3.org/2000/svg")
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ElementTree.register_namespace("xlink", "http://www.w3.org/1999/xlink")
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unit2mm: dict[str, float] = {
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"mm": 1.0,
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"cm": 10.0,
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"in": 25.4,
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"px": 90.0 / 25.4,
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"pt": 90.0 / 25.4 / 1.25,
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"pc": 90.0 / 25.4 / 15,
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}
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def getSizeInMM(tree):
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root = tree.getroot()
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m = re.match(r"(-?\d+\.?\d*)(\D+)", root.get("height"))
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height, units = m.groups()
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height = float(height) * unit2mm.get(units, 1.0)
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m = re.match(r"(-?\d+\.?\d*)(\D+)", root.get("width"))
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width, units = m.groups()
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width = float(width) * unit2mm.get(units, 1.0)
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return width, height
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def getViewBox(tree):
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root = tree.getroot()
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m = re.match(r"\s*(-?\d+\.?\d*)\s+"
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r"(-?\d+\.?\d*)\s+"
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r"(-?\d+\.?\d*)\s+"
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r"(-?\d+\.?\d)\s*", root.get("viewBox"))
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return [float(m) for m in m.groups()]
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def ticksPerMM(tree) -> tuple[float, float]:
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width, height = getSizeInMM(tree)
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x1, y1, x2, y2 = getViewBox(tree)
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return x2 / width, y2 / height
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def svgMerge(box, inkscape, output) -> None:
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src_tree = ElementTree.parse(box)
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dest_tree = ElementTree.parse(inkscape)
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dest_root = dest_tree.getroot()
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src_width, src_height = getSizeInMM(src_tree)
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dest_width, dest_height = getSizeInMM(dest_tree)
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src_scale_x, src_scale_y = ticksPerMM(src_tree)
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dest_scale_x, dest_scale_y = ticksPerMM(dest_tree)
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scale_x = dest_scale_x / src_scale_x
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scale_y = dest_scale_y / src_scale_y
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src_view = getViewBox(src_tree)
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off_x = src_view[0] * -scale_x
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off_y = (src_view[1] + src_view[3]) * -scale_y + dest_height * scale_y
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for el in src_tree.getroot():
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dest_root.append(el)
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if el.tag.endswith("g"):
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el.set("transform", f"matrix({scale_x:f},0,0,{scale_y:f}, {off_x:f}, {off_y:f})")
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# write the xml file
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ElementTree.ElementTree(dest_root).write(output, encoding='utf-8', xml_declaration=True)
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