/
importSVG.py
1885 lines (1753 loc) · 72.8 KB
/
importSVG.py
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## @package importSVG
# \ingroup DRAFT
# \brief SVG file importer & exporter
'''@package importSVG
\ingroup DRAFT
\brief SVG file importer & exporter
This module provides support for importing and exporting SVG files. It
enables importing/exporting objects directly to/from the 3D document, but
doesn't handle the SVG output from the Drawing and TechDraw modules.
Currently it only reads the following entities:
* paths, lines, circular arcs, rects, circles, ellipses, polygons, polylines.
Currently unsupported:
* use, image.
'''
# Check code with
# flake8 --ignore=E226,E266,E401,W503
# ***************************************************************************
# * *
# * Copyright (c) 2009 Yorik van Havre <yorik@uncreated.net> *
# * *
# * This program is free software; you can redistribute it and/or modify *
# * it under the terms of the GNU Lesser General Public License (LGPL) *
# * as published by the Free Software Foundation; either version 2 of *
# * the License, or (at your option) any later version. *
# * for detail see the LICENCE text file. *
# * *
# * 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 Library General Public License for more details. *
# * *
# * You should have received a copy of the GNU Library General Public *
# * License along with this program; if not, write to the Free Software *
# * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
# * USA *
# * *
# ***************************************************************************
__title__ = "FreeCAD Draft Workbench - SVG importer/exporter"
__author__ = "Yorik van Havre, Sebastian Hoogen"
__url__ = ["http://www.freecadweb.org"]
# ToDo:
# ignoring CDATA
# handle image element (external references and inline base64)
# debug Problem with 'Sans' font from Inkscape
# debug Problem with fill color
# implement inheriting fill style from group
# handle relative units
import xml.sax, FreeCAD, os, math, re, Draft, DraftVecUtils
from FreeCAD import Vector
from FreeCAD import Console as FCC
if FreeCAD.GuiUp:
from DraftTools import translate
from PySide import QtGui
else:
def translate(context, txt):
return txt
try:
import FreeCADGui
except ImportError:
gui = False
else:
gui = True
try:
draftui = FreeCADGui.draftToolBar
except AttributeError:
draftui = None
# Save the native open function to avoid collisions
if open.__module__ in ['__builtin__', 'io']:
pythonopen = open
svgcolors = {
'Pink': (255, 192, 203),
'Blue': (0, 0, 255),
'Honeydew': (240, 255, 240),
'Purple': (128, 0, 128),
'Fuchsia': (255, 0, 255),
'LawnGreen': (124, 252, 0),
'Amethyst': (153, 102, 204),
'Crimson': (220, 20, 60),
'White': (255, 255, 255),
'NavajoWhite': (255, 222, 173),
'Cornsilk': (255, 248, 220),
'Bisque': (255, 228, 196),
'PaleGreen': (152, 251, 152),
'Brown': (165, 42, 42),
'DarkTurquoise': (0, 206, 209),
'DarkGreen': (0, 100, 0),
'MediumOrchid': (186, 85, 211),
'Chocolate': (210, 105, 30),
'PapayaWhip': (255, 239, 213),
'Olive': (128, 128, 0),
'Silver': (192, 192, 192),
'PeachPuff': (255, 218, 185),
'Plum': (221, 160, 221),
'DarkGoldenrod': (184, 134, 11),
'SlateGrey': (112, 128, 144),
'MintCream': (245, 255, 250),
'CornflowerBlue': (100, 149, 237),
'Gold': (255, 215, 0),
'HotPink': (255, 105, 180),
'DarkBlue': (0, 0, 139),
'LimeGreen': (50, 205, 50),
'DeepSkyBlue': (0, 191, 255),
'DarkKhaki': (189, 183, 107),
'LightGrey': (211, 211, 211),
'Yellow': (255, 255, 0),
'Gainsboro': (220, 220, 220),
'MistyRose': (255, 228, 225),
'SandyBrown': (244, 164, 96),
'DeepPink': (255, 20, 147),
'Magenta': (255, 0, 255),
'AliceBlue': (240, 248, 255),
'DarkCyan': (0, 139, 139),
'DarkSlateGrey': (47, 79, 79),
'GreenYellow': (173, 255, 47),
'DarkOrchid': (153, 50, 204),
'OliveDrab': (107, 142, 35),
'Chartreuse': (127, 255, 0),
'Peru': (205, 133, 63),
'Orange': (255, 165, 0),
'Red': (255, 0, 0),
'Wheat': (245, 222, 179),
'LightCyan': (224, 255, 255),
'LightSeaGreen': (32, 178, 170),
'BlueViolet': (138, 43, 226),
'LightSlateGrey': (119, 136, 153),
'Cyan': (0, 255, 255),
'MediumPurple': (147, 112, 219),
'MidnightBlue': (25, 25, 112),
'FireBrick': (178, 34, 34),
'PaleTurquoise': (175, 238, 238),
'PaleGoldenrod': (238, 232, 170),
'Gray': (128, 128, 128),
'MediumSeaGreen': (60, 179, 113),
'Moccasin': (255, 228, 181),
'Ivory': (255, 255, 240),
'DarkSlateBlue': (72, 61, 139),
'Beige': (245, 245, 220),
'Green': (0, 128, 0),
'SlateBlue': (106, 90, 205),
'Teal': (0, 128, 128),
'Azure': (240, 255, 255),
'LightSteelBlue': (176, 196, 222),
'DimGrey': (105, 105, 105),
'Tan': (210, 180, 140),
'AntiqueWhite': (250, 235, 215),
'SkyBlue': (135, 206, 235),
'GhostWhite': (248, 248, 255),
'MediumTurquoise': (72, 209, 204),
'FloralWhite': (255, 250, 240),
'LavenderBlush': (255, 240, 245),
'SeaGreen': (46, 139, 87),
'Lavender': (230, 230, 250),
'BlanchedAlmond': (255, 235, 205),
'DarkOliveGreen': (85, 107, 47),
'DarkSeaGreen': (143, 188, 143),
'SpringGreen': (0, 255, 127),
'Navy': (0, 0, 128),
'Orchid': (218, 112, 214),
'SaddleBrown': (139, 69, 19),
'IndianRed': (205, 92, 92),
'Snow': (255, 250, 250),
'SteelBlue': (70, 130, 180),
'MediumSlateBlue': (123, 104, 238),
'Black': (0, 0, 0),
'LightBlue': (173, 216, 230),
'Turquoise': (64, 224, 208),
'MediumVioletRed': (199, 21, 133),
'DarkViolet': (148, 0, 211),
'DarkGray': (169, 169, 169),
'Salmon': (250, 128, 114),
'DarkMagenta': (139, 0, 139),
'Tomato': (255, 99, 71),
'WhiteSmoke': (245, 245, 245),
'Goldenrod': (218, 165, 32),
'MediumSpringGreen': (0, 250, 154),
'DodgerBlue': (30, 144, 255),
'Aqua': (0, 255, 255),
'ForestGreen': (34, 139, 34),
'LemonChiffon': (255, 250, 205),
'LightSlateGray': (119, 136, 153),
'SlateGray': (112, 128, 144),
'LightGray': (211, 211, 211),
'Indigo': (75, 0, 130),
'CadetBlue': (95, 158, 160),
'LightYellow': (255, 255, 224),
'DarkOrange': (255, 140, 0),
'PowderBlue': (176, 224, 230),
'RoyalBlue': (65, 105, 225),
'Sienna': (160, 82, 45),
'Thistle': (216, 191, 216),
'Lime': (0, 255, 0),
'Seashell': (255, 245, 238),
'DarkRed': (139, 0, 0),
'LightSkyBlue': (135, 206, 250),
'YellowGreen': (154, 205, 50),
'Aquamarine': (127, 255, 212),
'LightCoral': (240, 128, 128),
'DarkSlateGray': (47, 79, 79),
'Khaki': (240, 230, 140),
'DarkGrey': (169, 169, 169),
'BurlyWood': (222, 184, 135),
'LightGoldenrodYellow': (250, 250, 210),
'MediumBlue': (0, 0, 205),
'DarkSalmon': (233, 150, 122),
'RosyBrown': (188, 143, 143),
'LightSalmon': (255, 160, 122),
'PaleVioletRed': (219, 112, 147),
'Coral': (255, 127, 80),
'Violet': (238, 130, 238),
'Grey': (128, 128, 128),
'LightGreen': (144, 238, 144),
'Linen': (250, 240, 230),
'OrangeRed': (255, 69, 0),
'DimGray': (105, 105, 105),
'Maroon': (128, 0, 0),
'LightPink': (255, 182, 193),
'MediumAquamarine': (102, 205, 170),
'OldLace': (253, 245, 230)
}
svgcolorslower = \
dict((key.lower(), value) for (key, value) in list(svgcolors.items()))
def getcolor(color):
"""Check if the given string is an RGB value, or if it is a named color.
Parameters
----------
color : str
Color in hexadecimal format, long '#12ab9f' or short '#1af'
Returns
-------
tuple
(r, g, b, a)
RGBA float tuple, where each value is between 0.0 and 1.0.
"""
if color[0] == "#":
# Color string '#12ab9f'
if len(color) == 7:
r = float(int(color[1:3], 16) / 255.0)
g = float(int(color[3:5], 16) / 255.0)
b = float(int(color[5:], 16) / 255.0)
# Color string '#1af'
elif len(color) == 4:
# Expand the hex digits
r = float(int(color[1], 16) * 17 / 255.0)
g = float(int(color[2], 16) * 17 / 255.0)
b = float(int(color[3], 16) * 17 / 255.0)
return (r, g, b, 0.0)
# Color string 'rgb(0.12,0.23,0.3,0.0)'
elif color.lower().startswith('rgb('):
cvalues = color[3:].lstrip('(').rstrip(')').replace('%', '').split(',')
if '%' in color:
r, g, b = [int(float(cv)) / 100.0 for cv in cvalues]
else:
r, g, b = [int(float(cv)) / 255.0 for cv in cvalues]
return (r, g, b, 0.0)
# Color string 'MediumAquamarine'
else:
v = svgcolorslower.get(color.lower())
if v:
r, g, b = [float(vf) / 255.0 for vf in v]
return (r, g, b, 0.0)
# for k, v in svgcolors.items():
# if k.lower() == color.lower():
# pass
def transformCopyShape(shape, m):
"""Apply transformation matrix m on given shape.
Since OCCT 6.8.0 transformShape can be used to apply certain
non-orthogonal transformations on shapes. This way a conversion
to BSplines in transformGeometry can be avoided.
@sa: Part::TopoShape::transformGeometry(), TopoShapePy::transformGeometry()
@sa: Part::TopoShape::transformShape(), TopoShapePy::transformShape()
Parameters
----------
shape : Part::TopoShape
A given shape
m : Base::Matrix4D
A transformation matrix
Returns
-------
shape : Part::TopoShape
The shape transformed by the matrix
"""
# If there is no shear, these matrix operations will be very small
_s1 = abs(m.A11**2 + m.A12**2 - m.A21**2 - m.A22**2)
_s2 = abs(m.A11 * m.A21 + m.A12 * m.A22)
if _s1 < 1e-8 and _s2 < 1e-8:
try:
newshape = shape.copy()
newshape.transformShape(m)
return newshape
# Older versions of OCCT will refuse to work on
# non-orthogonal matrices
except Part.OCCError:
pass
return shape.transformGeometry(m)
def getsize(length, mode='discard', base=1):
"""Parse the length string containing number and unit.
Parameters
----------
length : str
The length is a string, including sign, exponential notation,
and unit: '+56215.14565E+6mm', '-23.156e-2px'.
mode : str, optional
One of 'discard', 'tuple', 'css90.0', 'css96.0', 'mm90.0', 'mm96.0'.
'discard' (default), it discards the unit suffix, and extracts
a number from the given string.
'tuple', return number and unit as a tuple
'css90.0', convert the unit to pixels assuming 90 dpi
'css96.0', convert the unit to pixels assuming 96 dpi
'mm90.0', convert the unit to millimeters assuming 90 dpi
'mm96.0', convert the unit to millimeters assuming 96 dpi
base : float, optional
A base to scale the length.
Returns
-------
float
The numeric value of the length, as is, or transformed to
millimeters or pixels.
float, string
A tuple with the numeric value, and the unit if `mode='tuple'`.
"""
# Dictionaries to convert units to millimeters or pixels.
#
# The `em` and `ex` units are typographical units used in systems
# like LaTeX. Here the conversion factors are arbitrarily chosen,
# as they should depend on a specific font size used.
#
# The percentage factor is arbitrarily chosen, as it should depend
# on the viewport size or for filling patterns on the bounding box.
if mode == 'mm90.0':
tomm = {
'': 25.4/90, # default
'px': 25.4/90,
'pt': 1.25 * 25.4/90,
'pc': 15 * 25.4/90,
'mm': 1.0,
'cm': 10.0,
'in': 25.4,
'em': 15 * 2.54/90,
'ex': 10 * 2.54/90,
'%': 100
}
elif mode == 'mm96.0':
tomm = {
'': 25.4/96, # default
'px': 25.4/96,
'pt': 1.25 * 25.4/96,
'pc': 15 * 25.4/96,
'mm': 1.0,
'cm': 10.0,
'in': 25.4,
'em': 15 * 2.54/96,
'ex': 10 * 2.54/96,
'%': 100
}
elif mode == 'css90.0':
topx = {
'': 1.0, # default
'px': 1.0,
'pt': 1.25,
'pc': 15,
'mm': 90.0/25.4,
'cm': 90.0/254.0,
'in': 90,
'em': 15,
'ex': 10,
'%': 100
}
elif mode == 'css96.0':
topx = {
'': 1.0, # default
'px': 1.0,
'pt': 1.25,
'pc': 15,
'mm': 96.0/25.4,
'cm': 96.0/254.0,
'in': 96,
'em': 15,
'ex': 10,
'%': 100
}
# Extract a number from a string like '+56215.14565E+6mm'
_num = '([-+]?[0-9]*\.?[0-9]+([eE][-+]?[0-9]+)?)'
_unit = '(px|pt|pc|mm|cm|in|em|ex|%)?'
_full_num = _num + _unit
number, exponent, unit = re.findall(_full_num, length)[0]
if mode == 'discard':
return float(number)
elif mode == 'tuple':
return float(number), unit
elif mode == 'isabsolute':
return unit in ('mm', 'cm', 'in', 'px', 'pt')
elif mode == 'mm96.0' or mode == 'mm90.0':
return float(number) * tomm[unit]
elif mode == 'css96.0' or mode == 'css90.0':
if unit != '%':
return float(number) * topx[unit]
else:
return float(number) * base
def makewire(path, checkclosed=False, donttry=False):
'''Try to make a wire out of the list of edges.
If the wire functions fail or the wire is not closed,
if required the TopoShapeCompoundPy::connectEdgesToWires()
function is used.
Parameters
----------
path : Part.Edge
A collection of edges
checkclosed : bool, optional
Default is `False`.
donttry : bool, optional
Default is `False`. If it's `True` it won't try to check
for a closed path.
Returns
-------
Part::Wire
A wire created from the ordered edges.
Part::Compound
A compound made of the edges, but unable to form a wire.
'''
if not donttry:
try:
import Part
sh = Part.Wire(Part.__sortEdges__(path))
# sh = Part.Wire(path)
isok = (not checkclosed) or sh.isClosed()
if len(sh.Edges) != len(path):
isok = False
# BRep_API: command not done
except Part.OCCError:
isok = False
if donttry or not isok:
# Code from wmayer forum p15549 to fix the tolerance problem
# original tolerance = 0.00001
comp = Part.Compound(path)
_sh = comp.connectEdgesToWires(False,
10**(-1 * (Draft.precision() - 2)))
sh = _sh.Wires[0]
if len(sh.Edges) != len(path):
FCC.PrintWarning("Unable to form a wire\n")
sh = comp
return sh
def arccenter2end(center, rx, ry, angle1, angledelta, xrotation=0.0):
'''Calculate start and end points, and flags of an arc.
Calculate start and end points, and flags of an arc given in
``center parametrization``.
See http://www.w3.org/TR/SVG/implnote.html#ArcImplementationNotes
Parameters
----------
center : Base::Vector3
Coordinates of the center of the ellipse.
rx : float
Radius of the ellipse, semi-major axis in the X direction
ry : float
Radius of the ellipse, semi-minor axis in the Y direction
angle1 : float
Initial angle in radians
angledelta : float
Additional angle in radians
xrotation : float, optional
Default 0. Rotation around the Z axis
Returns
-------
v1, v2, largerc, sweep
Tuple indicating the end points of the arc, and two boolean values
indicating whether the arc is less than 180 degrees or not,
and whether the angledelta is negative.
'''
vr1 = Vector(rx * math.cos(angle1), ry * math.sin(angle1), 0)
vr2 = Vector(rx * math.cos(angle1 + angledelta),
ry * math.sin(angle1 + angledelta),
0)
mxrot = FreeCAD.Matrix()
mxrot.rotateZ(xrotation)
v1 = mxrot.multiply(vr1).add(center)
v2 = mxrot.multiply(vr2).add(center)
fa = ((abs(angledelta) / math.pi) % 2) > 1 # < 180 deg
fs = angledelta < 0
return v1, v2, fa, fs
def arcend2center(lastvec, currentvec, rx, ry,
xrotation=0.0, correction=False):
'''Calculate the possible centers for an arc in endpoint parameterization.
Calculate (positive and negative) possible centers for an arc given in
``endpoint parametrization``.
See http://www.w3.org/TR/SVG/implnote.html#ArcImplementationNotes
the sweepflag is interpreted as: sweepflag <==> arc is travelled clockwise
Parameters
----------
lastvec : Base::Vector3
First point of the arc.
currentvec : Base::Vector3
End point (current) of the arc.
rx : float
Radius of the ellipse, semi-major axis in the X direction.
ry : float
Radius of the ellipse, semi-minor axis in the Y direction.
xrotation : float, optional
Default is 0. Rotation around the Z axis, in radians (CCW).
correction : bool, optional
Default is `False`. If it is `True`, the radii will be scaled
by a factor.
Returns
-------
list, (float, float)
A tuple that consists of one list, and a tuple of radii.
[(positive), (negative)], (rx, ry)
The first element of the list is the positive tuple,
the second is the negative tuple.
[(Base::Vector3, float, float),
(Base::Vector3, float, float)], (float, float)
Types
[(vcenter+, angle1+, angledelta+),
(vcenter-, angle1-, angledelta-)], (rx, ry)
The first element of the list is the positive tuple,
consisting of center, angle, and angle increment;
the second element is the negative tuple.
'''
# scalefacsign = 1 if (largeflag != sweepflag) else -1
rx = float(rx)
ry = float(ry)
v0 = lastvec.sub(currentvec)
v0.multiply(0.5)
m1 = FreeCAD.Matrix()
m1.rotateZ(-xrotation) # eq. 5.1
v1 = m1.multiply(v0)
if correction:
eparam = v1.x**2 / rx**2 + v1.y**2 / ry**2
if eparam > 1:
eproot = math.sqrt(eparam)
rx = eproot * rx
ry = eproot * ry
denom = rx**2 * v1.y**2 + ry**2 * v1.x**2
numer = rx**2 * ry**2 - denom
results = []
# If the division is very small, set the scaling factor to zero,
# otherwise try to calculate it by taking the square root
if abs(numer/denom) < 10**(-1 * (Draft.precision())):
scalefacpos = 0
else:
try:
scalefacpos = math.sqrt(numer/denom)
except ValueError:
FCC.PrintMessage('sqrt(%f/%f)\n' % (numer, denom))
scalefacpos = 0
# Calculate two values because the square root may be positive or negative
for scalefacsign in (1, -1):
scalefac = scalefacpos * scalefacsign
# Step2 eq. 5.2
vcx1 = Vector(v1.y * rx/ry, -v1.x * ry/rx, 0).multiply(scalefac)
m2 = FreeCAD.Matrix()
m2.rotateZ(xrotation)
centeroff = currentvec.add(lastvec)
centeroff.multiply(0.5)
vcenter = m2.multiply(vcx1).add(centeroff) # Step3 eq. 5.3
# angle1 = Vector(1, 0, 0).getAngle(Vector((v1.x - vcx1.x)/rx,
# (v1.y - vcx1.y)/ry,
# 0)) # eq. 5.5
# angledelta = Vector((v1.x - vcx1.x)/rx,
# (v1.y - vcx1.y)/ry,
# 0).getAngle(Vector((-v1.x - vcx1.x)/rx,
# (-v1.y - vcx1.y)/ry,
# 0)) # eq. 5.6
# we need the right sign for the angle
angle1 = DraftVecUtils.angle(Vector(1, 0, 0),
Vector((v1.x - vcx1.x)/rx,
(v1.y - vcx1.y)/ry,
0)) # eq. 5.5
angledelta = DraftVecUtils.angle(Vector((v1.x - vcx1.x)/rx,
(v1.y - vcx1.y)/ry,
0),
Vector((-v1.x - vcx1.x)/rx,
(-v1.y - vcx1.y)/ry,
0)) # eq. 5.6
results.append((vcenter, angle1, angledelta))
return results, (rx, ry)
def getrgb(color):
"""Return an RGB hexadecimal string '#00aaff' from a FreeCAD color.
Parameters
----------
color : App::Color::Color
FreeCAD color.
Returns
-------
str
The hexadecimal string representation of the color '#00aaff'.
"""
r = str(hex(int(color[0] * 255)))[2:].zfill(2)
g = str(hex(int(color[1] * 255)))[2:].zfill(2)
b = str(hex(int(color[2] * 255)))[2:].zfill(2)
return "#" + r + g + b
class svgHandler(xml.sax.ContentHandler):
"""Parse SVG files and create FreeCAD objects."""
def __init__(self):
"""Retrieve Draft parameters and initialize."""
_prefs = "User parameter:BaseApp/Preferences/Mod/Draft"
params = FreeCAD.ParamGet(_prefs)
self.style = params.GetInt("svgstyle")
self.disableUnitScaling = params.GetBool("svgDisableUnitScaling",
False)
self.count = 0
self.transform = None
self.grouptransform = []
self.lastdim = None
self.viewbox = None
self.symbols = {}
self.currentsymbol = None
self.svgdpi = 1.0
global Part
import Part
if gui and draftui:
r = float(draftui.color.red()/255.0)
g = float(draftui.color.green()/255.0)
b = float(draftui.color.blue()/255.0)
self.lw = float(draftui.linewidth)
else:
self.lw = float(params.GetInt("linewidth"))
c = params.GetUnsigned("color")
r = float(((c >> 24) & 0xFF)/255)
g = float(((c >> 16) & 0xFF)/255)
b = float(((c >> 8) & 0xFF)/255)
self.col = (r, g, b, 0.0)
def format(self, obj):
"""Apply styles to the object if the graphical interface is up."""
if FreeCAD.GuiUp:
v = obj.ViewObject
if self.color:
v.LineColor = self.color
if self.width:
v.LineWidth = self.width
if self.fill:
v.ShapeColor = self.fill
def startElement(self, name, attrs):
"""Re-organize data into a nice clean dictionary.
Parameters
----------
name : str
Name of the element: 'path', 'rect', 'line', 'polyline',
'polygon', 'ellipse', 'circle', 'text', 'tspan', 'symbol'
attrs : iterable
Dictionary of content of the elements
"""
self.count += 1
FCC.PrintMessage('processing element %d: %s\n' % (self.count, name))
FCC.PrintMessage('existing group transform: %s\n'
% (str(self.grouptransform)))
data = {}
for (keyword, content) in list(attrs.items()):
# print(keyword, content)
if keyword != "style":
content = content.replace(',', ' ')
content = content.split()
# print(keyword, content)
data[keyword] = content
# If it's the first element, which is <svg>,
# check if the file is created by Inkscape, and its version,
# in order to consider some attributes of the SVG file.
if self.count == 1 and name == 'svg':
if 'inkscape:version' in data:
inks_doc_name = attrs.getValue('sodipodi:docname')
inks_full_ver = attrs.getValue('inkscape:version')[:4]
inks_full_ver_list = inks_full_ver.split('.')
_maj = int(inks_full_ver_list[0])
_min = int(inks_full_ver_list[1])
# Inkscape before 0.92 used 90 dpi as resolution
# Newer versions use 96 dpi
if _maj == 0 and _min > 91:
self.svgdpi = 96.0
elif _maj == 0 and _min < 92:
self.svgdpi = 90.0
elif _maj > 0:
self.svgdpi = 96.0
if 'inkscape:version' not in data:
_msg = ("This SVG file does not appear to have been produced "
"by Inkscape. If it does not contain absolute units "
"then a DPI setting will be used.")
_qst = ("Do you wish to use 96 dpi? Choosing 'No' "
"will use the older standard 90 dpi.")
if FreeCAD.GuiUp:
msgBox = QtGui.QMessageBox()
msgBox.setText(translate("ImportSVG", _msg))
msgBox.setInformativeText(translate("ImportSVG", _qst))
msgBox.setStandardButtons(QtGui.QMessageBox.Yes
| QtGui.QMessageBox.No)
msgBox.setDefaultButton(QtGui.QMessageBox.No)
ret = msgBox.exec_()
if ret == QtGui.QMessageBox.Yes:
self.svgdpi = 96.0
else:
self.svgdpi = 90.0
if ret:
FCC.PrintMessage(translate("ImportSVG", _msg) + "\n")
FCC.PrintMessage(translate("ImportSVG", _qst) + "\n")
FCC.PrintMessage("*** User specified "
+ str(self.svgdpi) + " dpi ***\n")
else:
self.svgdpi = 96.0
FCC.PrintMessage(_msg + "\n")
FCC.PrintMessage("*** Assuming " + str(self.svgdpi)
+ " dpi ***\n")
if self.svgdpi == 1.0:
FCC.PrintWarning("This SVG file (" + inks_doc_name + ") "
"has an unrecognised format which means "
"the dpi could not be determined; "
"assuming 96 dpi\n")
self.svgdpi = 96.0
if 'style' in data:
if not data['style']:
# Empty style attribute stops inheriting from parent
pass
else:
content = data['style'].replace(' ', '')
content = content.split(';')
for i in content:
pair = i.split(':')
if len(pair) > 1:
data[pair[0]] = pair[1]
for k in ['x', 'y', 'x1', 'y1', 'x2', 'y2',
'r', 'rx', 'ry', 'cx', 'cy', 'width', 'height']:
if k in data:
data[k] = getsize(data[k][0], 'css' + str(self.svgdpi))
for k in ['fill', 'stroke', 'stroke-width', 'font-size']:
if k in data:
if isinstance(data[k], list):
if data[k][0].lower().startswith("rgb("):
data[k] = ",".join(data[k])
else:
data[k] = data[k][0]
# Extract style info
self.fill = None
self.color = None
self.width = None
self.text = None
if name == 'svg':
m = FreeCAD.Matrix()
if not self.disableUnitScaling:
if 'width' in data \
and 'height' in data \
and 'viewBox' in data:
vbw = float(data['viewBox'][2])
vbh = float(data['viewBox'][3])
w = attrs.getValue('width')
h = attrs.getValue('height')
self.viewbox = (vbw, vbh)
if len(self.grouptransform) == 0:
unitmode = 'mm' + str(self.svgdpi)
else:
# nested svg element
unitmode = 'css' + str(self.svgdpi)
abw = getsize(w, unitmode)
abh = getsize(h, unitmode)
sx = abw / vbw
sy = abh / vbh
_data = data.get('preserveAspectRatio', [])
preservearstr = ' '.join(_data).lower()
uniformscaling = round(sx/sy, 5) == 1
if uniformscaling:
m.scale(Vector(sx, sy, 1))
else:
FCC.PrintWarning('Scaling factors do not match!\n')
if preservearstr.startswith('none'):
m.scale(Vector(sx, sy, 1))
else:
# preserve the aspect ratio
if preservearstr.endswith('slice'):
sxy = max(sx, sy)
else:
sxy = min(sx, sy)
m.scale(Vector(sxy, sxy, 1))
elif len(self.grouptransform) == 0:
# fallback to current dpi
m.scale(Vector(25.4/self.svgdpi, 25.4/self.svgdpi, 1))
self.grouptransform.append(m)
if 'fill' in data:
if data['fill'][0] != 'none':
self.fill = getcolor(data['fill'])
if 'stroke' in data:
if data['stroke'][0] != 'none':
self.color = getcolor(data['stroke'])
if 'stroke-width' in data:
if data['stroke-width'] != 'none':
self.width = getsize(data['stroke-width'],
'css' + str(self.svgdpi))
if 'transform' in data:
m = self.getMatrix(attrs.getValue('transform'))
if name == "g":
self.grouptransform.append(m)
else:
self.transform = m
else:
if name == "g":
self.grouptransform.append(FreeCAD.Matrix())
if self.style == 1:
self.color = self.col
self.width = self.lw
pathname = None
if 'id' in data:
pathname = data['id'][0]
FCC.PrintMessage('name: %s\n' % pathname)
# Process paths
if name == "path":
FCC.PrintMessage('data: %s\n' % str(data))
if not pathname:
pathname = 'Path'
path = []
point = []
lastvec = Vector(0, 0, 0)
lastpole = None
# command = None
relative = False
firstvec = None
if "freecad:basepoint1" in data:
p1 = data["freecad:basepoint1"]
p1 = Vector(float(p1[0]), -float(p1[1]), 0)
p2 = data["freecad:basepoint2"]
p2 = Vector(float(p2[0]), -float(p2[1]), 0)
p3 = data["freecad:dimpoint"]
p3 = Vector(float(p3[0]), -float(p3[1]), 0)
obj = Draft.makeDimension(p1, p2, p3)
self.applyTrans(obj)
self.format(obj)
self.lastdim = obj
data['d'] = []
_op = '([mMlLhHvVaAcCqQsStTzZ])'
_op2 = '([^mMlLhHvVaAcCqQsStTzZ]*)'
_command = '\s*?' + _op + '\s*?' + _op2 + '\s*?'
pathcommandsre = re.compile(_command, re.DOTALL)
_num = '[-+]?[0-9]*\.?[0-9]+'
_exp = '([eE][-+]?[0-9]+)?'
_point = '(' + _num + _exp + ')'
pointsre = re.compile(_point, re.DOTALL)
_commands = pathcommandsre.findall(' '.join(data['d']))
for d, pointsstr in _commands:
relative = d.islower()
_points = pointsre.findall(pointsstr.replace(',', ' '))
pointlist = [float(number) for number, exponent in _points]
if (d == "M" or d == "m"):
x = pointlist.pop(0)
y = pointlist.pop(0)
if path:
# sh = Part.Wire(path)
sh = makewire(path)
if self.fill and sh.isClosed():
sh = Part.Face(sh)
sh = self.applyTrans(sh)
obj = self.doc.addObject("Part::Feature", pathname)
obj.Shape = sh
self.format(obj)
if self.currentsymbol:
self.symbols[self.currentsymbol].append(obj)
path = []
# if firstvec:
# Move relative to last move command
# not last draw command
# lastvec = firstvec
if relative:
lastvec = lastvec.add(Vector(x, -y, 0))
else:
lastvec = Vector(x, -y, 0)
firstvec = lastvec
FCC.PrintMessage('move %s\n' % str(lastvec))
lastpole = None
if (d == "L" or d == "l") \
or ((d == 'm' or d == 'M') and pointlist):
for x, y in zip(pointlist[0::2], pointlist[1::2]):
if relative:
currentvec = lastvec.add(Vector(x, -y, 0))
else:
currentvec = Vector(x, -y, 0)
if not DraftVecUtils.equals(lastvec, currentvec):
_seg = Part.LineSegment(lastvec, currentvec)
seg = _seg.toShape()
FCC.PrintMessage("line %s %s\n"
% (lastvec, currentvec))
lastvec = currentvec
path.append(seg)
lastpole = None
elif (d == "H" or d == "h"):
for x in pointlist:
if relative:
currentvec = lastvec.add(Vector(x, 0, 0))
else:
currentvec = Vector(x, lastvec.y, 0)
seg = Part.LineSegment(lastvec, currentvec).toShape()
lastvec = currentvec
lastpole = None
path.append(seg)
elif (d == "V" or d == "v"):
for y in pointlist:
if relative:
currentvec = lastvec.add(Vector(0, -y, 0))
else:
currentvec = Vector(lastvec.x, -y, 0)
if lastvec != currentvec:
_seg = Part.LineSegment(lastvec, currentvec)
seg = _seg.toShape()
lastvec = currentvec
lastpole = None
path.append(seg)
elif (d == "A" or d == "a"):
piter = zip(pointlist[0::7], pointlist[1::7],
pointlist[2::7], pointlist[3::7],
pointlist[4::7], pointlist[5::7],
pointlist[6::7])
for (rx, ry, xrotation,
largeflag, sweepflag,
x, y) in piter:
# support for large-arc and x-rotation is missing
if relative:
currentvec = lastvec.add(Vector(x, -y, 0))
else:
currentvec = Vector(x, -y, 0)
chord = currentvec.sub(lastvec)
# small circular arc
_precision = 10**(-1*Draft.precision())
if (not largeflag) and abs(rx - ry) < _precision:
# perp = chord.cross(Vector(0, 0, -1))
# here is a better way to find the perpendicular
if sweepflag == 1:
# clockwise
perp = DraftVecUtils.rotate2D(chord,
-math.pi/2)
else:
# anticlockwise
perp = DraftVecUtils.rotate2D(chord, math.pi/2)
chord.multiply(0.5)
if chord.Length > rx:
a = 0