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At least: font code generator, exchange code support for color 128x128

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This commit is contained in:
Max Regan
2019-08-04 15:35:44 -07:00
parent e0b49ba109
commit 77f09bca16
47 changed files with 899 additions and 16431 deletions
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83
gen/fixedfont-to-c.py
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@@ -64,15 +64,14 @@ def ceildiv(num, den):
def to_c_name(name):
return name.replace("-","_")
def emit_bmp(output, font_name, char, bmp):
def emit_bmp(output, font_name, char, glyph, bmp):
width_bytes = ceildiv(bmp.width, 8)
height_bytes = ceildiv(bmp.height, 8)
output.write(f"// Bitmap for '{char}'\n")
name = to_c_name(f"{font_name}_{ord(char)}")
output.write(f"static uint8_t {name}_bitmap[] {{\n")
output.write(f"static const uint8_t {name}_bitmap[] = {{\n")
byte = 0
for y in range(bmp.height):
output.write(" ")
@@ -90,50 +89,86 @@ def emit_bmp(output, font_name, char, bmp):
output.write(f"// Glyph data for '{char}'\n")
output.write(f"static struct glyph {name}_glyph {{\n")
output.write(f"static const struct glyph {name}_glyph = {{\n")
output.write(f" .width = {bmp.width},\n")
output.write(f" .width_bytes = {width_bytes},\n")
output.write(f" .height = {bmp.height},\n")
output.write(f" .height_bytes = {height_bytes},\n")
output.write(f" .top = {glyph.top},\n")
output.write(f" .left = {glyph.left},\n")
output.write(f" .bitmap = {name}_bitmap,\n")
output.write("};\n\n")
def emit_font(output, ff, font_name, chars):
def emit_font(output, ff, font_name, charset, height, width):
c_font_name = to_c_name(font_name)
output.write(f"static struct font {c_font_name} {{\n")
output.write(f"const struct font {c_font_name} = {{\n")
output.write(f" .name = \"{font_name}\",\n")
output.write(f" .glypyhs = [\n")
for i in range(127):
if i in
output.write(f" .height = {height},\n")
output.write(f" .width = {width},\n")
output.write(f" .glyphs = {{\n")
for i in range(128):
if chr(i) in charset:
name = to_c_name(f"{font_name}_{i}_glyph")
output.write(f" [{i}] = &{name},\n")
else:
output.write(f" [{i}] = NULL,\n")
output.write(f" }}\n")
output.write("};\n\n")
def gen_c_font_file(ttf, output, charset, width=None, size=None, header_dir=None):
def gen_c_font_file(ttf, output, charset, width=None, size=None, header_dir=None, font_name=None):
ff = font.FixedFont(ttf, width=width, height=size)
if font_name is None:
font_name = ff.face.postscript_name.decode('ASCII')
ff = font.FixedFont(ttf, size)
font_name = ff.face.postscript_name.decode('ASCII')
emit_license(output)
emit_include(output, header_dir)
width = None
max_advance = None
max_height = None
for char in charset:
bmp = ff.render_character(char)
emit_bmp(output, font_name, char, bmp)
if width is None:
width = ceildiv(bmp.width, 8)
emit_font(output, ff, font_name)
glyph = ff.glyph_for_character(char)
emit_bmp(output, font_name, char, glyph, bmp)
advance = glyph.advance_width
if not max_advance or advance > max_advance:
max_advance = advance
height = glyph.top
if not max_height or height > max_height:
max_height = height
emit_font(output, ff, font_name, charset, max_height, max_advance)
def gen_h_font_file(ttf, output, header_dir=None, font_name=None):
if font_name is None:
font_name = ff.face.postscript_name.decode('ASCII')
c_font_name = to_c_name(font_name)
define_name = f"_FONT_{c_font_name.upper()}_H_"
def gen_h_font_file(ttf, output, charset, width=None, size=None):
emit_license(output)
output.write("\n")
output.write(f"#ifndef {define_name}\n")
output.write(f"#define {define_name}\n")
output.write("\n")
emit_include(output, header_dir)
output.write(f"extern const struct font {c_font_name};\n")
output.write("\n")
output.write("#endif")
def main():
parser = argparse.ArgumentParser(description="Fixed-width TrueType C code generator")
parser.add_argument(dest="filetype", help="The filetype to produce", action="store", type=str, choices=["c","h"])
parser.add_argument(dest="ttf", help="TrueType font file", action="store", type=str)
parser.add_argument(dest="output", help="Output C file", action="store", type=argparse.FileType('w'))
parser.add_argument(dest="output", help="Output file", action="store", type=argparse.FileType('w'))
parser.add_argument("--chars", "-c", help="Character set. Defaults to all printable ASCII", action="store", type=str,
default="abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-=_+{}[]:\";'<>,.?/~!@#$%^&*()|\\")
default="abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789 -=_+{}[]:\";'<>,.?/~!@#$%^&*()|\\")
parser.add_argument("--header-dir", help="Directory of the font.h header", action="store", type=str)
parser.add_argument("--name", help="Font name to use in the generated code", action="store", type=str)
group = parser.add_mutually_exclusive_group(required=True)
group.add_argument("--size", "-s", help="Font pitch", action="store", type=int)
@@ -143,7 +178,11 @@ def main():
args.chars = list(set(args.chars))
args.chars.sort()
gen_c_font_file(args.ttf, args.output, args.chars, width=args.width, size=args.size, header_dir=args.header_dir)
if args.filetype == "c":
gen_c_font_file(args.ttf, args.output, args.chars, width=args.width,
size=args.size, header_dir=args.header_dir, font_name=args.name)
elif args.filetype == "h":
gen_h_font_file(args.ttf, args.output, header_dir=args.header_dir, font_name=args.name)
if __name__ == "__main__":