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https://github.com/google/pebble.git
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83 lines
2.9 KiB
Python
83 lines
2.9 KiB
Python
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# Copyright 2024 Google LLC
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import freetype
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import argparse
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import os, sys, re
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from math import ceil
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MIN_CODEPOINT = 0x20
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MAX_CODEPOINT = 0xffff
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# Set a codepoint that the font doesn't know how to render
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# The watch will use this glyph as the wildcard character
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WILDCARD_CODEPOINT = 0x3456
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class Font:
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def __init__(self, ttf_path):
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self.version = 1
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self.ttf_path = ttf_path
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# Get the font's size from the filename:
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self.basename = os.path.basename(self.ttf_path)
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m = re.search('([0-9]+)', self.basename)
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if m == None:
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sys.stderr.write('Font {0}: no size found in file name...\n'.format(filename))
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return
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self.max_height = int(m.group(0))
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self.face = freetype.Face(self.ttf_path)
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self.face.set_pixel_sizes(0, self.max_height)
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self.name = self.face.family_name + "_" + self.face.style_name
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self.wildcard_codepoint = WILDCARD_CODEPOINT
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self.number_of_glyphs = 0
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return
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def is_supported_glyph(self, codepoint):
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return (self.face.get_char_index(codepoint) > 0 or (codepoint == unichr(self.wildcard_codepoint)))
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def emit_codepoints(self):
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to_file = os.path.splitext(self.ttf_path)[0] + '.codepoints'
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f = open(to_file, 'wb')
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for codepoint in xrange(MIN_CODEPOINT, MAX_CODEPOINT + 1):
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self.face.load_char(unichr(codepoint))
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if self.is_supported_glyph(codepoint):
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print>>f,"U+%08d" % (codepoint,)
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f.close()
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return
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def emit_codepoints_as_utf8(self):
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to_file = os.path.splitext(self.ttf_path)[0] + '.utf8'
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f = open(to_file, 'wb')
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for codepoint in xrange(MIN_CODEPOINT, MAX_CODEPOINT + 1):
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self.face.load_char(unichr(codepoint))
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if self.is_supported_glyph(codepoint):
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f.write(unichr(codepoint).encode('utf-8'))
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f.close()
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return
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def main():
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font_directory = "ttf"
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font_paths = []
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for _, _, filenames in os.walk(font_directory):
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for filename in filenames:
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if os.path.splitext(filename)[1] == '.ttf':
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font_paths.append(os.path.join(font_directory, filename))
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for font_path in font_paths:
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f = Font(font_path)
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f.emit_codepoints()
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f.emit_codepoints_as_utf8()
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return
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if __name__ == "__main__":
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main()
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