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1.2 KiB
1.2 KiB
Name
font - Bitmap Font File format (.font)
Synopsis
Font files contain bitmap definitions of fonts (Gfx::BitmapFont).
Description
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.
Structure
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 |
See also
- Format header definition in
Gfx::FontFileHeaderinUserland/Libraries/LibGfx/Font/BitmapFont.cpp