kopia lustrzana https://github.com/peterhinch/micropython-font-to-py
Porównaj commity
2 Commity
a874f617d2
...
3c9ef81fdd
| Autor | SHA1 | Data |
|---|---|---|
Jacques Supcik
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3c9ef81fdd | |
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Jacques Supcik
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9453548518 |
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@ -34,8 +34,7 @@ from pathlib import Path
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import click
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import freetype
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from .byte_writer import ByteWriter
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from .font import Font
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from .writer import write_binary_font, write_font
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if freetype.version()[0] < 1:
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click.echo("freetype version should be >= 1. Please see FONT_TO_PY.md")
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@ -49,182 +48,6 @@ UNICODE_PRIVATE_USE_AREA_END = 0xF8FF
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VERSION = importlib.metadata.version("micropython-font-to-py")
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# Define a global
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def var_write(stream, name, value):
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stream.write(f"{name} = {value}\n")
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STR01 = """# Code generated by font_to_py.
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# Font: {font:s}{charset:s}
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# Cmd: {cmd:s}
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version = '{version:s}'
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"""
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# Code emitted for charsets spanning a small range of ordinal values
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STR02 = """_mvfont = memoryview(_font)
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_mvi = memoryview(_index)
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ifb = lambda l : l[0] | (l[1] << 8)
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def get_ch(ch):
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oc = ord(ch)
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ioff = 2 * (oc - {min:d} + 1) if oc >= {min:d} and oc <= {max:d} else 0
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doff = ifb(_mvi[ioff : ])
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width = ifb(_mvfont[doff : ])
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"""
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# Code emiited for large charsets, assumed by build_arrays() to be sparse.
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# Binary search of sorted sparse index.
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# Offset into data array is saved after dividing by 8
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STRSP = """_mvfont = memoryview(_font)
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_mvsp = memoryview(_sparse)
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ifb = lambda l : l[0] | (l[1] << 8)
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def bs(lst, val):
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while True:
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m = (len(lst) & ~ 7) >> 1
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v = ifb(lst[m:])
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if v == val:
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return ifb(lst[m + 2:])
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if not m:
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return 0
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lst = lst[m:] if v < val else lst[:m]
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def get_ch(ch):
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doff = bs(_mvsp, ord(ch)) << 3
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width = ifb(_mvfont[doff : ])
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"""
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# Code emitted for horizontally mapped fonts.
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STR02H = """
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next_offs = doff + 2 + ((width - 1)//8 + 1) * {height:d}
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return _mvfont[doff + 2:next_offs], {height:d}, width
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"""
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# Code emitted for vertically mapped fonts.
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STR02V = """
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next_offs = doff + 2 + (({height:d} - 1)//8 + 1) * width
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return _mvfont[doff + 2:next_offs], {height:d}, width
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"""
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# Extra code emitted where -i is specified.
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STR03 = '''
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def glyphs():
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for c in """{}""":
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yield c, get_ch(c)
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'''
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def write_func(stream, name, arg):
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stream.write(f"def {name}():\n return {arg}\n\n")
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def write_font( # noqa: PLR0913
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op_path,
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font_path,
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height,
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monospaced,
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hmap,
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reverse,
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minchar,
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maxchar,
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defchar,
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charset,
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iterate,
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bitmapped,
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):
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try:
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fnt = Font(
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font_path, height, minchar, maxchar, monospaced, defchar, charset, bitmapped
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)
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except freetype.ft_errors.FT_Exception:
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click.echo(f"Can't open {font_path}")
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return False
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try:
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with open(op_path, "w", encoding="utf-8") as stream:
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write_data(stream, fnt, font_path, hmap, reverse, iterate, charset)
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except OSError:
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click.echo(f"Can't open {op_path} for writing")
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return False
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return True
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def write_data( # noqa: PLR0913
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stream, fnt, font_path, hmap, reverse, iterate, charset
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):
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height = fnt.height # Actual height, not target height
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minchar = min(fnt.crange)
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maxchar = max(fnt.crange)
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st = "" if charset == "" else f" Char set: {charset}"
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cl = " ".join([str(Path(sys.argv[0]).stem), *sys.argv[1:]])
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stream.write(
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STR01.format(font=Path(font_path).stem, charset=st, cmd=cl, version=VERSION)
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)
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write_func(stream, "height", height)
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write_func(stream, "baseline", fnt._max_ascent)
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write_func(stream, "max_width", fnt.max_width)
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write_func(stream, "hmap", hmap)
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write_func(stream, "reverse", reverse)
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write_func(stream, "monospaced", fnt.monospaced)
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write_func(stream, "min_ch", minchar)
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write_func(stream, "max_ch", maxchar)
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if iterate:
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stream.write(STR03.format("".join(sorted(fnt.keys()))))
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data, index, sparse = fnt.build_arrays(hmap, reverse)
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bw_font = ByteWriter(stream, "_font")
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bw_font.odata(data)
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bw_font.eot()
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if sparse: # build_arrays() has returned a sparse index
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bw_sparse = ByteWriter(stream, "_sparse")
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bw_sparse.odata(sparse)
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bw_sparse.eot()
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stream.write(STRSP)
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click.echo("Sparse")
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else:
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bw_index = ByteWriter(stream, "_index")
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bw_index.odata(index)
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bw_index.eot()
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stream.write(STR02.format(min=minchar, max=maxchar))
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click.echo("Normal")
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if hmap:
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stream.write(STR02H.format(height=height))
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else:
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stream.write(STR02V.format(height=height))
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# BINARY OUTPUT
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# hmap reverse magic bytes
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# 0 0 0x3f 0xe7
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# 1 0 0x40 0xe7
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# 0 1 0x41 0xe7
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# 1 1 0x42 0xe7
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def write_binary_font(op_path, font_path, height, hmap, reverse):
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try:
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fnt = Font(
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font_path, height, 32, 126, True, None, ""
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) # All chars have same width
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except freetype.ft_errors.FT_Exception:
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click.echo(f"Can't open {font_path}")
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return False
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sig = 1 if hmap else 0
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if reverse:
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sig += 2
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try:
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with open(op_path, "wb") as stream:
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data = fnt.build_binary_array(hmap, reverse, sig)
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stream.write(data)
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except OSError:
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click.echo(f"Can't open {op_path} for writing")
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return False
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return True
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# PARSE COMMAND LINE ARGUMENTS
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def quit(msg):
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click.echo(msg)
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sys.exit(1)
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@ -0,0 +1,211 @@
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# Some code adapted from Daniel Bader's work at the following URL
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# https://dbader.org/blog/monochrome-font-rendering-with-freetype-and-python
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# With thanks to Stephen Irons @ironss for various improvements, also to
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# @enigmaniac for ideas around handling `bdf` and `pcf` files.
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# The MIT License (MIT)
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#
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# Copyright (c) 2016-2023 Peter Hinch
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#
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# Permission is hereby granted, free of charge, to any person obtaining a copy
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# of this software and associated documentation files (the "Software"), to deal
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# in the Software without restriction, including without limitation the rights
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# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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# copies of the Software, and to permit persons to whom the Software is
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# furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included in
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# all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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# THE SOFTWARE.
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import importlib.metadata
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import sys
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from pathlib import Path
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import click
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import freetype
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from .byte_writer import ByteWriter
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from .font import Font
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VERSION = importlib.metadata.version("micropython-font-to-py")
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# Define a global
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def var_write(stream, name, value):
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stream.write(f"{name} = {value}\n")
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STR01 = """# Code generated by font_to_py.
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# Font: {font:s}{charset:s}
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# Cmd: {cmd:s}
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version = '{version:s}'
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"""
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# Code emitted for charsets spanning a small range of ordinal values
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STR02 = """_mvfont = memoryview(_font)
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_mvi = memoryview(_index)
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ifb = lambda l : l[0] | (l[1] << 8)
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def get_ch(ch):
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oc = ord(ch)
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ioff = 2 * (oc - {min:d} + 1) if oc >= {min:d} and oc <= {max:d} else 0
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doff = ifb(_mvi[ioff : ])
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width = ifb(_mvfont[doff : ])
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"""
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# Code emiited for large charsets, assumed by build_arrays() to be sparse.
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# Binary search of sorted sparse index.
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# Offset into data array is saved after dividing by 8
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STRSP = """_mvfont = memoryview(_font)
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_mvsp = memoryview(_sparse)
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ifb = lambda l : l[0] | (l[1] << 8)
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def bs(lst, val):
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while True:
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m = (len(lst) & ~ 7) >> 1
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v = ifb(lst[m:])
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if v == val:
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return ifb(lst[m + 2:])
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if not m:
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return 0
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lst = lst[m:] if v < val else lst[:m]
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def get_ch(ch):
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doff = bs(_mvsp, ord(ch)) << 3
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width = ifb(_mvfont[doff : ])
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"""
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# Code emitted for horizontally mapped fonts.
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STR02H = """
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next_offs = doff + 2 + ((width - 1)//8 + 1) * {height:d}
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return _mvfont[doff + 2:next_offs], {height:d}, width
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"""
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# Code emitted for vertically mapped fonts.
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STR02V = """
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next_offs = doff + 2 + (({height:d} - 1)//8 + 1) * width
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return _mvfont[doff + 2:next_offs], {height:d}, width
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"""
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# Extra code emitted where -i is specified.
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STR03 = '''
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def glyphs():
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for c in """{}""":
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yield c, get_ch(c)
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'''
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def write_func(stream, name, arg):
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stream.write(f"def {name}():\n return {arg}\n\n")
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def write_font( # noqa: PLR0913
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op_path,
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font_path,
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height,
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monospaced,
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hmap,
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reverse,
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minchar,
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maxchar,
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defchar,
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charset,
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iterate,
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bitmapped,
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):
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try:
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fnt = Font(
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font_path, height, minchar, maxchar, monospaced, defchar, charset, bitmapped
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)
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except freetype.ft_errors.FT_Exception:
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click.echo(f"Can't open {font_path}")
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return False
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try:
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with open(op_path, "w", encoding="utf-8") as stream:
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write_data(stream, fnt, font_path, hmap, reverse, iterate, charset)
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except OSError:
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click.echo(f"Can't open {op_path} for writing")
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return False
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return True
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def write_data( # noqa: PLR0913
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stream, fnt, font_path, hmap, reverse, iterate, charset
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):
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height = fnt.height # Actual height, not target height
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minchar = min(fnt.crange)
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maxchar = max(fnt.crange)
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st = "" if charset == "" else f" Char set: {charset}"
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cl = " ".join([str(Path(sys.argv[0]).stem), *sys.argv[1:]])
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stream.write(
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STR01.format(font=Path(font_path).stem, charset=st, cmd=cl, version=VERSION)
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)
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write_func(stream, "height", height)
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write_func(stream, "baseline", fnt._max_ascent)
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write_func(stream, "max_width", fnt.max_width)
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write_func(stream, "hmap", hmap)
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write_func(stream, "reverse", reverse)
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write_func(stream, "monospaced", fnt.monospaced)
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write_func(stream, "min_ch", minchar)
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write_func(stream, "max_ch", maxchar)
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if iterate:
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stream.write(STR03.format("".join(sorted(fnt.keys()))))
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data, index, sparse = fnt.build_arrays(hmap, reverse)
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bw_font = ByteWriter(stream, "_font")
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bw_font.odata(data)
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bw_font.eot()
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if sparse: # build_arrays() has returned a sparse index
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bw_sparse = ByteWriter(stream, "_sparse")
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bw_sparse.odata(sparse)
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bw_sparse.eot()
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stream.write(STRSP)
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click.echo("Sparse")
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else:
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bw_index = ByteWriter(stream, "_index")
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bw_index.odata(index)
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bw_index.eot()
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stream.write(STR02.format(min=minchar, max=maxchar))
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click.echo("Normal")
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if hmap:
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stream.write(STR02H.format(height=height))
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else:
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stream.write(STR02V.format(height=height))
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# BINARY OUTPUT
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# hmap reverse magic bytes
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# 0 0 0x3f 0xe7
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# 1 0 0x40 0xe7
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# 0 1 0x41 0xe7
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# 1 1 0x42 0xe7
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def write_binary_font(op_path, font_path, height, hmap, reverse):
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try:
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fnt = Font(
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font_path, height, 32, 126, True, None, ""
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) # All chars have same width
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except freetype.ft_errors.FT_Exception:
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click.echo(f"Can't open {font_path}")
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return False
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sig = 1 if hmap else 0
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if reverse:
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sig += 2
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try:
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with open(op_path, "wb") as stream:
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data = fnt.build_binary_array(hmap, reverse, sig)
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stream.write(data)
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except OSError:
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click.echo(f"Can't open {op_path} for writing")
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return False
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return True
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@ -17,6 +17,7 @@ include = [
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{ path = "Chinese_Japanese*", format = ["sdist", "wheel"] },
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{ path = "cyrillic", format = ["sdist", "wheel"] },
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{ path = "extended", format = ["sdist", "wheel"] },
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{ path = "latin15", format = ["sdist", "wheel"] },
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]
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[tool.poetry.dependencies]
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|
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