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mirror of https://github.com/rsms/inter.git synced 2024-12-12 15:22:36 +03:00
inter/misc/tools/gen-metrics-and-svgs.py
2021-03-28 15:21:24 -07:00

338 lines
8.3 KiB
Python
Executable File

#!/usr/bin/env python
# encoding: utf8
#
# Sync glyph shapes between SVG and UFO, creating a bridge between UFO and Figma.
#
import os, sys
from os.path import dirname, basename, abspath, relpath, join as pjoin
sys.path.append(abspath(pjoin(dirname(__file__), 'tools')))
from common import BASEDIR
import argparse
import json
import plistlib
import re
from collections import OrderedDict
from math import ceil, floor
from defcon import Font
from svg import SVGPathPen
from ufo2ft.filters.decomposeComponents import DecomposeComponentsFilter
from ufo2ft.filters.removeOverlaps import RemoveOverlapsFilter
ufo = None
ufopath = ''
effectiveAscender = 0
scale = 0.1
def num(s):
return int(s) if s.find('.') == -1 else float(s)
def glyphToSVGPath(g, yMul):
pen = SVGPathPen(g.getParent(), yMul)
g.draw(pen)
return pen.getCommands()
def svgWidth(g):
bounds = g.bounds # (xMin, yMin, xMax, yMax)
if bounds is None:
return 0, 0
xMin = bounds[0]
xMax = bounds[2]
width = xMax - xMin
return width, xMin
def glyphToSVG(g):
width, xoffs = svgWidth(g)
svg = '''
<svg id="svg-%(name)s" xmlns="http://www.w3.org/2000/svg" width="%(width)d" height="%(height)d">
<path d="%(glyphSVGPath)s" transform="translate(%(xoffs)g %(yoffs)g) scale(%(scale)g)"/>
</svg>
''' % {
'name': g.name,
'width': int(ceil(width * scale)),
'height': int(ceil((effectiveAscender - ufo.info.descender) * scale)),
'xoffs': -(xoffs * scale),
'yoffs': effectiveAscender * scale,
# 'leftMargin': g.leftMargin * scale,
# 'rightMargin': g.rightMargin * scale,
'glyphSVGPath': glyphToSVGPath(g, -1),
# 'ascender': ufo.info.ascender * scale,
# 'descender': ufo.info.descender * scale,
# 'baselineOffset': (ufo.info.unitsPerEm + ufo.info.descender) * scale,
# 'unitsPerEm': ufo.info.unitsPerEm,
'scale': scale,
# 'margin': [g.leftMargin * scale, g.rightMargin * scale],
}
# (width, advance, left, right)
info = (width, g.width, g.leftMargin, g.rightMargin)
return svg.strip(), info
def stat(path):
try:
return os.stat(path)
except OSError as e:
return None
def writeFile(file, s):
with open(file, 'w') as f:
f.write(s)
def writeFileAndMkDirsIfNeeded(file, s):
try:
writeFile(file, s)
except IOError as e:
if e.errno == 2:
os.makedirs(os.path.dirname(file))
writeFile(file, s)
def findGlifFile(glyphname):
# glyphname.glif
# glyphname_.glif
# glyphname__.glif
# glyphname___.glif
for underscoreCount in range(0, 5):
fn = os.path.join(ufopath, 'glyphs', glyphname + ('_' * underscoreCount) + '.glif')
st = stat(fn)
if st is not None:
return fn, st
if glyphname.find('.') != -1:
# glyph_.name.glif
# glyph__.name.glif
# glyph___.name.glif
for underscoreCount in range(0, 5):
nv = glyphname.split('.')
nv[0] = nv[0] + ('_' * underscoreCount)
ns = '.'.join(nv)
fn = os.path.join(ufopath, 'glyphs', ns + '.glif')
st = stat(fn)
if st is not None:
return fn, st
if glyphname.find('_') != -1:
# glyph_name.glif
# glyph_name_.glif
# glyph_name__.glif
# glyph__name.glif
# glyph__name_.glif
# glyph__name__.glif
# glyph___name.glif
# glyph___name_.glif
# glyph___name__.glif
for x in range(0, 4):
for y in range(0, 5):
ns = glyphname.replace('_', '__' + ('_' * x))
fn = os.path.join(ufopath, 'glyphs', ns + ('_' * y) + '.glif')
st = stat(fn)
if st is not None:
return fn, st
return ('', None)
usedSVGNames = set()
def genGlyph(glyphName):
g = ufo[glyphName]
return glyphToSVG(g)
def genGlyphIDs(glyphnames):
nameToIdMap = {}
idToNameMap = {}
nextId = 0
for name in glyphnames:
nameToIdMap[name] = nextId
idToNameMap[nextId] = name
nextId += 1
return nameToIdMap, idToNameMap
def genKerningInfo(ufo, glyphnames, nameToIdMap):
kerning = ufo.kerning
# load groups
filename = os.path.join(ufo.path, 'groups.plist')
groups = None
with open(filename, 'rb') as f:
groups = plistlib.load(f)
pairs = []
for kt in kerning.keys():
v = kerning[kt]
leftname, rightname = kt
leftnames = []
rightnames = []
if leftname.startswith(u'public.kern'):
leftnames = groups[leftname]
else:
leftnames = [leftname]
if rightname.startswith(u'public.kern'):
rightnames = groups[rightname]
else:
rightnames = [rightname]
for lname in leftnames:
for rname in rightnames:
lnameId = nameToIdMap.get(lname)
rnameId = nameToIdMap.get(rname)
if lnameId is not None and rnameId is not None:
pairs.append([lnameId, rnameId, v])
# print('pairs: %r' % pairs)
return pairs
def fmtJsonDict(d):
keys = sorted(d.keys())
s = '{'
delim = '\n'
delimNth = ',\n'
for k in keys:
v = d[k]
s += delim + json.dumps(str(k)) + ':' + json.dumps(v)
delim = delimNth
return s + '}'
def fmtJsonList(d):
s = '['
delim = '\n'
delimNth = ',\n'
for t in kerning:
s += delim + json.dumps(t, separators=(',',':'))
delim = delimNth
return s + ']'
# ————————————————————————————————————————————————————————————————————————
# main
argparser = argparse.ArgumentParser(description='Generate SVG glyphs from UFO')
argparser.add_argument('-scale', dest='scale', metavar='<scale>', type=str,
default='',
help='Scale glyph. Should be a number in the range (0-1]. Defaults to %g' % scale)
argparser.add_argument('ufopath', metavar='<ufopath>', type=str,
help='Path to UFO packages')
argparser.add_argument('glyphs', metavar='<glyphname>', type=str, nargs='*',
help='Only generate specific glyphs.')
args = argparser.parse_args()
srcDir = os.path.join(BASEDIR, 'src')
deleteNames = set(['.notdef', '.null'])
if len(args.scale):
scale = float(args.scale)
ufopath = args.ufopath.rstrip('/')
ufo = Font(ufopath)
effectiveAscender = max(ufo.info.ascender, ufo.info.unitsPerEm)
deleteNames.add('.notdef')
deleteNames.add('.null')
glyphnames = args.glyphs if len(args.glyphs) else ufo.keys()
glyphnameSet = set(glyphnames)
glyphnames = [gn for gn in glyphnames if gn not in deleteNames]
glyphnames.sort()
nameToIdMap, idToNameMap = genGlyphIDs(glyphnames)
print('generating kerning pair data')
kerning = genKerningInfo(ufo, glyphnames, nameToIdMap)
print('preprocessing glyphs')
filters = [
DecomposeComponentsFilter(),
RemoveOverlapsFilter(backend=RemoveOverlapsFilter.Backend.SKIA_PATHOPS),
]
glyphSet = {g.name: g for g in ufo}
for func in filters:
func(ufo, glyphSet)
print('generating SVGs and metrics data')
# print('\n'.join(ufo.keys()))
# sys.exit(0)
glyphMetrics = {}
# jsonLines = []
svgLines = []
for glyphname in glyphnames:
generateFrom = None
svg, metrics = genGlyph(glyphname)
# metrics: (width, advance, left, right)
glyphMetrics[nameToIdMap[glyphname]] = metrics
svgLines.append(svg.replace('\n', ''))
# print('{\n' + ',\n'.join(jsonLines) + '\n}')
svgtext = '\n'.join(svgLines)
# print(svgtext)
glyphsHtmlFilename = os.path.join(BASEDIR, 'docs', 'glyphs', 'index.html')
html = u''
with open(glyphsHtmlFilename, 'r', encoding="utf-8") as f:
html = f.read()
startMarker = u'<div id="svgs">'
startPos = html.find(startMarker)
endMarker = u'</div><!--END-SVGS'
endPos = html.find(endMarker, startPos + len(startMarker))
relfilename = os.path.relpath(glyphsHtmlFilename, os.getcwd())
if startPos == -1 or endPos == -1:
msg = 'Could not find `<div id="svgs">...</div><!--END-SVGS` in %s'
print(msg % relfilename, file=sys.stderr)
sys.exit(1)
metaJson = '{\n'
metaJson += '"nameids":' + fmtJsonDict(idToNameMap) + ',\n'
metaJson += '"metrics":' + fmtJsonDict(glyphMetrics) + ',\n'
metaJson += '"kerning":' + fmtJsonList(kerning) + '\n'
metaJson += '}'
# metaHtml = '<script>var fontMetaData = ' + metaJson + ';</script>'
html = html[:startPos + len(startMarker)] + '\n' + svgtext + '\n' + html[endPos:]
print('write', relfilename)
with open(glyphsHtmlFilename, 'w', encoding="utf-8") as f:
f.write(html)
# JSON
jsonFilename = os.path.join(BASEDIR, 'docs', 'glyphs', 'metrics.json')
jsonFilenameRel = os.path.relpath(jsonFilename, os.getcwd())
print('write', jsonFilenameRel)
with open(jsonFilename, 'w', encoding="utf-8") as f:
f.write(metaJson)
metaJson