/usr/lib/python2.7/dist-packages/qrcode/image/svg.py is in python-qrcode 5.0.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 | from decimal import Decimal
# On Python 2.6 must install lxml since the older xml.etree.ElementTree
# version can not be used to create SVG images.
try:
import lxml.etree as ET
except ImportError:
import xml.etree.ElementTree as ET
import qrcode.image.base
class SvgFragmentImage(qrcode.image.base.BaseImage):
"""
SVG image builder
Creates a QR-code image as a SVG document fragment.
"""
_SVG_namespace = "http://www.w3.org/2000/svg"
kind = "SVG"
allowed_kinds = ("SVG",)
def __init__(self, *args, **kwargs):
ET.register_namespace("svg", self._SVG_namespace)
super(SvgFragmentImage, self).__init__(*args, **kwargs)
# Save the unit size, for example the default box_size of 10 is '1mm'.
self.unit_size = self.units(self.box_size)
def drawrect(self, row, col):
self._img.append(self._rect(row, col))
def units(self, pixels, text=True):
"""
A box_size of 10 (default) equals 1mm.
"""
units = Decimal(pixels) / 10
if not text:
return units
return '%smm' % units
def save(self, stream, kind=None):
self.check_kind(kind=kind)
self._write(stream)
def new_image(self, **kwargs):
return self._svg()
def _svg(self, tag=None, version='1.1', **kwargs):
if tag is None:
tag = ET.QName(self._SVG_namespace, "svg")
dimension = self.units(self.pixel_size)
return ET.Element(
tag, width=dimension, height=dimension, version=version,
**kwargs)
def _rect(self, row, col, tag=None):
if tag is None:
tag = ET.QName(self._SVG_namespace, "rect")
x, y = self.pixel_box(row, col)[0]
return ET.Element(
tag, x=self.units(x), y=self.units(y),
width=self.unit_size, height=self.unit_size)
def _write(self, stream):
ET.ElementTree(self._img).write(stream, xml_declaration=False)
class SvgImage(SvgFragmentImage):
"""
Standalone SVG image builder
Creates a QR-code image as a standalone SVG document.
"""
background = None
def _svg(self, tag='svg', **kwargs):
svg = super(SvgImage, self)._svg(tag=tag, **kwargs)
svg.set("xmlns", self._SVG_namespace)
if self.background:
svg.append(
ET.Element(
'rect', fill=self.background, x='0', y='0', width='100%',
height='100%'))
return svg
def _rect(self, row, col):
return super(SvgImage, self)._rect(row, col, tag="rect")
def _write(self, stream):
ET.ElementTree(self._img).write(stream, encoding="UTF-8",
xml_declaration=True)
class SvgPathImage(SvgImage):
"""
SVG image builder with one single <path> element (removes white spaces
between individual QR points).
"""
QR_PATH_STYLE = 'fill:#000000;fill-opacity:1;fill-rule:nonzero;stroke:none'
def __init__(self, *args, **kwargs):
self._points = set()
super(SvgPathImage, self).__init__(*args, **kwargs)
def _svg(self, viewBox=None, **kwargs):
if viewBox is None:
dimension = self.units(self.pixel_size, text=False)
viewBox = '0 0 %(d)s %(d)s' % {'d': dimension}
return super(SvgPathImage, self)._svg(viewBox=viewBox, **kwargs)
def drawrect(self, row, col):
# (x, y)
self._points.add((col, row))
def _generate_subpaths(self):
"""Generates individual QR points as subpaths"""
rect_size = self.units(self.box_size, text=False)
for point in self._points:
x_base = self.units(
(point[0]+self.border)*self.box_size, text=False)
y_base = self.units(
(point[1]+self.border)*self.box_size, text=False)
yield (
'M %(x0)s %(y0)s L %(x0)s %(y1)s L %(x1)s %(y1)s L %(x1)s '
'%(y0)s z' % dict(
x0=x_base, y0=y_base,
x1=x_base+rect_size, y1=y_base+rect_size,
))
def make_path(self):
subpaths = self._generate_subpaths()
return ET.Element(
ET.QName("path"),
style=self.QR_PATH_STYLE,
d=' '.join(subpaths),
id="qr-path"
)
def _write(self, stream):
self._img.append(self.make_path())
super(SvgPathImage, self)._write(stream)
class SvgFillImage(SvgImage):
"""
An SvgImage that fills the background to white.
"""
background = 'white'
class SvgPathFillImage(SvgPathImage):
"""
An SvgPathImage that fills the background to white.
"""
background = 'white'
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