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nerd-fonts/font-patcher

258 lines
9.5 KiB
Python
Executable File

#!/usr/bin/env python2
import sys
import psMat
import re
import os.path
import argparse
try:
#Load the module
import fontforge
except ImportError:
sys.stderr.write("FontForge module could not be loaded. Try installing fontforge python bindings\n")
sys.exit(1)
# argparse stuff
parser = argparse.ArgumentParser(description='Patches a given font with programming and web development related glyphs (mainly for vim-webdevicons)')
parser.add_argument('font', help='The path to the font to be patched (e.g. Inconsolata.otf)')
parser.add_argument('-s', '--use-single-width-glyphs', dest='single', action='store_true', help='Whether to generate the glyphs as single-width not double-width (default is double-width)', default=False)
parser.add_argument('-q', '--quiet', '--shutup', dest='quiet', action='store_true', help='Do not generate verbose output', default=False)
args = parser.parse_args()
#print "using fontforge package version: " + str(fontforge.__version__) + " " + str(fontforge.version())
#print type(fontforge.version())
#print int(fontforge.version())
minimumVersion = 20141231
actualVersion = int(fontforge.version())
#actualVersion = 20120731 # for testing invalid version
if actualVersion < minimumVersion:
print "You seem to be using an unsupported (old) version of fontforge: " + str(actualVersion)
print "Please use at least version: " + str(minimumVersion)
sys.exit(1)
additionalFontNameSuffix = " Plus Nerd File Types"
if args.single:
additionalFontNameSuffix += " Mono"
sourceFont = fontforge.open(args.font)
# rename font
fontname, style = re.match("^([^-]*)(?:(-.*))?$", sourceFont.fontname).groups()
sourceFont.familyname = sourceFont.familyname + additionalFontNameSuffix
sourceFont.fullname = sourceFont.fullname + additionalFontNameSuffix
sourceFont.fontname = fontname + additionalFontNameSuffix.replace(" ", "")
sourceFont.appendSFNTName('English (US)', 'Preferred Family', sourceFont.familyname)
sourceFont.appendSFNTName('English (US)', 'Compatible Full', sourceFont.fullname)
# glyph font
sourceFont_em_original = sourceFont.em
symbols = fontforge.open("glyph-source-fonts/original-source.otf")
symbols2 = fontforge.open("glyph-source-fonts/devicons.ttf")
symbolsRangeStart = 0xE500
symbolsRangeEnd = 0xE521
symbols2RangeStart = 0xE600
symbols2RangeEnd = 0xE6A4
sourceFontRange1Start = 0xE600
sourceFontRange1End = 0xE621
sourceFontRange2Start = 0xE700
sourceFontRange2End = 0xE7A4
SYM_ATTR = {
# Right/left-aligned glyphs will have their advance width reduced in order to overlap the next glyph slightly
0x2b60: { 'align': 'c', 'stretch': 'y' , 'overlap': False },
0x2b61: { 'align': 'c', 'stretch': '' , 'overlap': False },
0x2b62: { 'align': 'r', 'stretch': '' , 'overlap': False },
0x2b63: { 'align': 'l', 'stretch': '' , 'overlap': False },
0x2b64: { 'align': 'c', 'stretch': '' , 'overlap': False },
0x2b80: { 'align': 'l', 'stretch': 'xy', 'overlap': True },
0x2b81: { 'align': 'l', 'stretch': 'xy', 'overlap': True },
0x2b82: { 'align': 'r', 'stretch': 'xy', 'overlap': True },
0x2b83: { 'align': 'r', 'stretch': 'xy', 'overlap': True },
}
# Force the em size to be equal
symbols.em = sourceFont.em
symbols2.em = sourceFont.em
# Initial font dimensions
font_dim = {
'xmin' : 0,
'ymin' : -sourceFont.descent,
'xmax' : 0,
'ymax' : sourceFont.ascent,
'width' : 0,
'height': 0,
}
# Find the biggest char width and height
#
# 0x00-0x17f is the Latin Extended-A range
# 0x2500-0x2600 is the box drawing range
for glyph in range(0x00, 0x17f) + range(0x2500, 0x2600):
try:
(xmin, ymin, xmax, ymax) = sourceFont[glyph].boundingBox()
except TypeError:
continue
if font_dim['width'] == 0:
font_dim['width'] = sourceFont[glyph].width
if ymin < font_dim['ymin']: font_dim['ymin'] = ymin
if ymax > font_dim['ymax']: font_dim['ymax'] = ymax
if xmax > font_dim['xmax']: font_dim['xmax'] = xmax
# Calculate font height
font_dim['height'] = abs(font_dim['ymin']) + font_dim['ymax']
# Update the font encoding to ensure that the Unicode glyphs are available
sourceFont.encoding = 'ISO10646'
# Fetch this property before adding outlines
onlybitmaps = sourceFont.onlybitmaps
def get_dim(glyph):
bbox = glyph.boundingBox()
return {
'xmin' : bbox[0],
'ymin' : bbox[1],
'xmax' : bbox[2],
'ymax' : bbox[3],
'width' : bbox[2] + (-bbox[0]),
'height': bbox[3] + (-bbox[1]),
}
def copy_glyphs(sourceFont, sourceFontStart, sourceFontEnd, symbolFont, symbolFontStart, symbolFontEnd):
sourceFontList = []
sourceFontCounter = 0
for i in xrange(sourceFontStart, sourceFontEnd + 1):
sourceFontList.append(format(i, 'X'))
# Create glyphs from symbol font
symbolFont.selection.select(("ranges","unicode"),symbolFontStart,symbolFontEnd)
sourceFont.selection.select(("ranges","unicode"),sourceFontStart,sourceFontEnd)
for sym_glyph in symbolFont.selection.byGlyphs:
#sym_attr = SYM_ATTR[sym_glyph.unicode]
if args.quiet == False:
print "updating glyph: " + str(sym_glyph)
# convince that this string really is a hex:
currentSourceFontGlyph = int("0x" + sourceFontList[sourceFontCounter], 16)
# Prepare symbol glyph dimensions
sym_dim = get_dim(sym_glyph)
# Select and copy symbol from its encoding point
symbolFont.selection.select(sym_glyph.encoding)
symbolFont.copy()
# Select and paste symbol to its unicode code point
sourceFont.selection.select(currentSourceFontGlyph)
sourceFont.paste()
if args.single:
# Now that we have copy/pasted the glyph, it's time to scale and move it
# Handle glyph stretching
#if 'x' in sym_attr['stretch']:
# # Stretch the glyph horizontally
# scale_ratio = font_dim['width'] / sym_dim['width']
# sourceFont.transform(psMat.scale(scale_ratio, 1))
#if 'y' in sym_attr['stretch']:
# # Stretch the glyph vertically
# scale_ratio = font_dim['height'] / sym_dim['height']
# sourceFont.transform(psMat.scale(1, scale_ratio))
# Use the dimensions from the pasted and stretched glyph
sym_dim = get_dim(sourceFont[currentSourceFontGlyph])
# Center-align the glyph vertically
font_ycenter = font_dim['height'] / 2
sym_ycenter = sym_dim['height'] / 2
# First move it to the ymax (top)
sourceFont.transform(psMat.translate(0, font_dim['ymax'] - sym_dim['ymax']))
# Then move it the y center difference
sourceFont.transform(psMat.translate(0, sym_ycenter - font_ycenter))
# Ensure that the glyph doesn't extend outside the font's bounding box
if sym_dim['width'] > font_dim['width']:
# The glyph is too wide, scale it down to fit
scale_matrix = psMat.scale(font_dim['width'] / sym_dim['width'], 1)
sourceFont.transform(scale_matrix)
# Use the dimensions from the stretched glyph
sym_dim = get_dim(sourceFont[currentSourceFontGlyph])
# Handle glyph alignment
#if sym_attr['align'] == 'c':
# # Center align
# align_matrix = psMat.translate(font_dim['width'] / 2 - sym_dim['width'] / 2 , 0)
align_matrix = psMat.translate(font_dim['width'] / 2 - sym_dim['width'] / 2 , 0)
#elif sym_attr['align'] == 'r':
# # Right align
# align_matrix = psMat.translate(font_dim['width'] - sym_dim['width'], 0)
#else:
# No alignment (left alignment)
#align_matrix = psMat.translate(0, 0)
sourceFont.transform(align_matrix)
#if sym_attr['overlap'] is True:
# overlap_width = sourceFont.em / 48
# # Stretch the glyph slightly horizontally if it should overlap
# sourceFont.transform(psMat.scale((sym_dim['width'] + overlap_width) / sym_dim['width'], 1))
# if sym_attr['align'] == 'l':
# # The glyph should be left-aligned, so it must be moved overlap_width to the left
# # This only applies to left-aligned glyphs because the glyph is scaled to the right
# sourceFont.transform(psMat.translate(-overlap_width, 0))
# Ensure the font is considered monospaced on Windows
sourceFont[currentSourceFontGlyph].width = font_dim['width']
sourceFontCounter += 1
# reset selection so iteration works propertly @todo fix? rookie misunderstanding?
symbolFont.selection.select(("ranges","unicode"),symbolFontStart,symbolFontEnd)
# end for
return
copy_glyphs(sourceFont, sourceFontRange1Start, sourceFontRange1End, symbols, symbolsRangeStart, symbolsRangeEnd)
copy_glyphs(sourceFont, sourceFontRange2Start, sourceFontRange2End, symbols2, symbols2RangeStart, symbols2RangeEnd)
extension = os.path.splitext(sourceFont.path)[1]
# @todo later add option to generate the sfd?
#sourceFont.save(sourceFont.fullname + ".sfd")
sourceFont.generate(sourceFont.fullname + extension)
print "Generated"
print sourceFont.fullname