font - Bitmap Font File format (.font)
Font files contain bitmap definitions of fonts (Gfx::BitmapFont
).
Bitmap fonts can be either varying-width or fixed-width.
The first four bytes of font files contain the filemagic: !Fnt
(0x21466e74).
In addition, Gfx::BitmapFont
supports reading from and writing to font files (as well as reading directly from memory)
and the question mark '?' used as a fallback for unknown glyphs or emojis.
The order is big-endian.
Size | Member name |
---|---|
4 bytes | Filemagic |
1 byte | Glyph width |
1 byte | Glyph height |
2 bytes | Range mask size |
1 byte | Variable width flag |
1 byte | Glyph spacing |
1 byte | Baseline |
1 byte | Mean line |
1 byte | Presentation size |
2 bytes | Weight |
1 byte | Slope |
32 bytes | Name |
32 bytes | Family |
- Format header definition in
Gfx::FontFileHeader
inUserland/Libraries/LibGfx/Font/BitmapFont.cpp