283 lines
9.4 KiB
Python
Executable File
283 lines
9.4 KiB
Python
Executable File
#!/usr/bin/env python3
|
|
# Copyright (C) 2016 Florian Festi
|
|
#
|
|
# This program is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation, either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
import re, datetime
|
|
|
|
from xml.etree import cElementTree as ElementTree
|
|
ElementTree.register_namespace("","http://www.w3.org/2000/svg")
|
|
ElementTree.register_namespace("xlink", "http://www.w3.org/1999/xlink")
|
|
|
|
class Extend:
|
|
|
|
def __init__(self):
|
|
self.minx = None
|
|
self.maxx = None
|
|
self.miny = None
|
|
self.maxy = None
|
|
|
|
def __add__(self, v):
|
|
x, y = v
|
|
res = Extend()
|
|
if self.minx is not None:
|
|
res.minx = self.minx + x
|
|
if self.maxx is not None:
|
|
res.maxx = self.maxx + x
|
|
if self.miny is not None:
|
|
res.miny = self.miny + y
|
|
if self.maxy is not None:
|
|
res.maxy = self.maxy + y
|
|
return res
|
|
|
|
def addPoint(self, x, y):
|
|
if self.minx is None or self.minx > x:
|
|
self.minx = x
|
|
if self.maxx is None or self.maxx < x:
|
|
self.maxx = x
|
|
if self.miny is None or self.miny > y:
|
|
self.miny = y
|
|
if self.maxy is None or self.maxy < y:
|
|
self.maxy = y
|
|
|
|
def addExtend(self, extend, x, y):
|
|
extend = extend + (x, y)
|
|
self.addPoint(extend.minx, extend.miny)
|
|
self.addPoint(extend.maxx, extend.maxy)
|
|
|
|
class SVGFile(object):
|
|
pathre = re.compile(r"[MCL]? *((-?\d+(\.\d+)?) (-?\d+(\.\d+)?) *)+")
|
|
transformre = re.compile(r"matrix\(" + ",".join([r"(-?\d+(\.\d+)?)"] * 6) + "\)")
|
|
|
|
def __init__(self, filename):
|
|
self.filename = filename
|
|
self.minx = self.maxx = self.miny = self.maxy = None
|
|
self.tree = ElementTree.parse(filename)
|
|
self.symbol_extends = {}
|
|
|
|
def fix(self, metadata=None):
|
|
#print("Optimizations:",
|
|
self.optimize(self.tree.getroot())
|
|
self.getEnvelope()
|
|
self.moveOrigin()
|
|
self.addMetadata(metadata)
|
|
self.rewriteViewPort()
|
|
|
|
def getExtend(self, element, extend):
|
|
if element.tag.endswith("}path"):
|
|
minx = maxx = miny = maxy = None
|
|
m = self.transformre.match(element.attrib.get("transform", ""))
|
|
|
|
if m:
|
|
matrix = [float(m.group(i)) for i in range(1, 12, 2)]
|
|
else:
|
|
matrix = [1, 0,
|
|
0, 1,
|
|
0, 0]
|
|
|
|
for m in self.pathre.findall(element.attrib.get("d", "")):
|
|
x = float(m[1])
|
|
y = float(m[3])
|
|
tx = matrix[0] * x + matrix[2] * y + matrix[4]
|
|
ty = matrix[1] * x + matrix[3] * y + matrix[5]
|
|
|
|
extend.addPoint(tx, ty)
|
|
elif element.tag.endswith("}use"):
|
|
x, y = float(element.attrib["x"]), float(element.attrib["y"])
|
|
s = self.symbol_extends[element.attrib["{http://www.w3.org/1999/xlink}href"][1:]]
|
|
extend.addExtend(s, x, y)
|
|
|
|
for e in element:
|
|
if e.tag.endswith("}symbol"):
|
|
self.symbol_extends[e.attrib["id"]] = self.getExtend(e, Extend())
|
|
else:
|
|
self.getExtend(e, extend)
|
|
return extend
|
|
|
|
def getEnvelope(self):
|
|
self.tags = []
|
|
root = self.tree.getroot()
|
|
self.extend = self.getExtend(root, Extend())
|
|
|
|
|
|
def _moveElement(self, e, dx, dy):
|
|
if e.tag.endswith("}symbol"):
|
|
return
|
|
if e.tag.endswith("}path"):
|
|
minx = maxx = miny = maxy = None
|
|
m = self.transformre.match(e.attrib.get("transform", ""))
|
|
|
|
if m:
|
|
matrix = [float(m.group(i)) for i in range(1, 12, 2)]
|
|
else:
|
|
matrix = [1, 0,
|
|
0, 1,
|
|
0, 0]
|
|
matrix[4] += dx
|
|
matrix[5] += dy
|
|
e.attrib["transform"] = "matrix(%s)" % (",".join(("%.4f" % m for m in matrix)))
|
|
if e.tag.endswith("}use"):
|
|
e.attrib["x"] = "%.4f" % (float(e.attrib["x"])+dx)
|
|
e.attrib["y"] = "%.4f" % (float(e.attrib["y"])+dy)
|
|
|
|
for child in e:
|
|
self._moveElement(child, dx, dy)
|
|
|
|
def moveOrigin(self):
|
|
self._moveElement(self.tree.getroot(),
|
|
-self.extend.minx+10, -self.extend.miny+10)
|
|
self.extend.maxx -= self.extend.minx-20
|
|
self.extend.maxy -= self.extend.miny-20
|
|
self.extend.minx = self.extend.miny = 0.0
|
|
|
|
def rewriteViewPort(self):
|
|
"""
|
|
Modify SVG file to have the correct width, height and viewPort attributes.
|
|
"""
|
|
|
|
self.extend.minx = self.extend.minx or 0
|
|
self.extend.miny = self.extend.miny or 0
|
|
self.extend.maxx = self.extend.maxx or (self.extend.minx + 10)
|
|
self.extend.maxy = self.extend.maxy or (self.extend.miny + 10)
|
|
|
|
if 0 <= self.extend.minx <= 50:
|
|
minx = 0
|
|
else:
|
|
minx = 10 * int(self.extend.minx // 10) - 10
|
|
|
|
maxx = 10 * int(self.extend.maxx // 10) + 10
|
|
miny = 10 * int(self.extend.miny // 10) - 10
|
|
maxy = 10 * int(self.extend.maxy // 10) + 10
|
|
|
|
root = self.tree.getroot()
|
|
root.set('width', "%imm" % (maxx-minx))
|
|
root.set('height', "%imm" % (maxy-miny))
|
|
root.set('viewBox', "%i %i %i %i" % (minx, miny, maxx - minx, maxy - miny))
|
|
|
|
self.tree.write(self.filename)
|
|
|
|
def optimize(self, element):
|
|
number = 0
|
|
if element.tag.endswith("}path"):
|
|
path = element.attrib.get("d", "")
|
|
d = r"(\-?\d+(\.\d+)?)"
|
|
while True:
|
|
old_number = number
|
|
for pattern, replacement in (
|
|
(" " + d + " " + d + r" (M|L) \1 \3 ",
|
|
r" \1 \3 "), # remove useless moves
|
|
# compress L parts of paths into V and H
|
|
(" " + d + " " + d + r" L " + d + r" \3 ",
|
|
r" \1 \3 H \5 "),
|
|
(" " + d + " " + d + r" L \1 " + d + " ",
|
|
r" \1 \3 V \5 "),
|
|
(r"H " + d + r" L \1 " + d + " ",
|
|
r"H \1 V \3 "),
|
|
(r"V " + d + " L " + d + " \1 ",
|
|
r"V \1 H \3 "),
|
|
):
|
|
path, n = re.subn(pattern, replacement, path, 2)
|
|
number += n
|
|
if number == old_number:
|
|
break
|
|
element.attrib["d"] = path
|
|
for e in element:
|
|
number += self.optimize(e)
|
|
return number
|
|
|
|
def addMetadata(self, md):
|
|
txt = """
|
|
{name} - {description}
|
|
Created with Boxes.py (https://festi.info/boxes.py)
|
|
Creation date: {date}
|
|
""".format(date=datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S") , **md)
|
|
|
|
txt += "Command line (remove spaces beteen dashes): %s\n" % md["cli"].replace("--", "- -")
|
|
|
|
if md["url"]:
|
|
txt+= "Url: %s\n" % md["url"]
|
|
txt+= "SettingsUrl: %s\n" % re.sub(r"&render=[01]", "", md["url"])
|
|
m = ElementTree.Comment(txt)
|
|
self.tree.getroot().insert(0, m)
|
|
|
|
unit2mm = {"mm" : 1.0,
|
|
"cm" : 10.0,
|
|
"in" : 25.4,
|
|
"px" : 90.0/25.4,
|
|
"pt" : 90.0/25.4/1.25,
|
|
"pc" : 90.0/25.4/15,
|
|
}
|
|
|
|
def getSizeInMM(tree):
|
|
root = tree.getroot()
|
|
m = re.match(r"(-?\d+\.?\d*)(\D+)", root.get("height"))
|
|
height, units = m.groups()
|
|
height = float(height) * unit2mm.get(units, 1.0)
|
|
|
|
m = re.match(r"(-?\d+\.?\d*)(\D+)", root.get("width"))
|
|
width, units = m.groups()
|
|
width = float(width) * unit2mm.get(units, 1.0)
|
|
|
|
return width, height
|
|
|
|
def getViewBox(tree):
|
|
root = tree.getroot()
|
|
m = re.match(r"\s*(-?\d+\.?\d*)\s+"
|
|
"(-?\d+\.?\d*)\s+"
|
|
"(-?\d+\.?\d*)\s+"
|
|
"(-?\d+\.?\d)\s*", root.get("viewBox"))
|
|
|
|
return [float(m) for m in m.groups()]
|
|
|
|
def ticksPerMM(tree):
|
|
width, height = getSizeInMM(tree)
|
|
x1, y1, x2, y2 = getViewBox(tree)
|
|
|
|
return x2/width, y2/height
|
|
|
|
def svgMerge(box, inkscape, output):
|
|
|
|
src_tree = ElementTree.parse(box)
|
|
dest_tree = ElementTree.parse(inkscape)
|
|
dest_root = dest_tree.getroot()
|
|
|
|
src_width, src_height = getSizeInMM(src_tree)
|
|
dest_width, dest_height = getSizeInMM(dest_tree)
|
|
|
|
src_scale_x, src_scale_y = ticksPerMM(src_tree)
|
|
dest_scale_x, dest_scale_y = ticksPerMM(dest_tree)
|
|
|
|
scale_x = dest_scale_x / src_scale_x
|
|
scale_y = dest_scale_y / src_scale_y
|
|
|
|
src_view = getViewBox(src_tree)
|
|
|
|
off_x = src_view[0] * -scale_x
|
|
off_y = (src_view[1]+src_view[3]) * -scale_y + dest_height * scale_y
|
|
|
|
for el in src_tree.getroot():
|
|
import sys
|
|
dest_root.append(el)
|
|
if el.tag.endswith("g"):
|
|
el.set("transform", "matrix(%f,0,0,%f, %f, %f)" % (
|
|
scale_x, scale_y, off_x, off_y))
|
|
|
|
# write the xml file
|
|
ElementTree.ElementTree(dest_root).write(output, encoding='utf-8', xml_declaration=True)
|
|
|
|
if __name__ == "__main__":
|
|
svg = SVGFile("examples/box.svg")
|
|
svg.getEnvelope()
|
|
svg.rewriteViewPort()
|