Lib.rs

This is a bitmap font parsing / conversion library. It supports a few font formats:

.tfon Format

Any text editor can be used to create fonts in this format. There are two parts to the file: a header and a list of characters.

The header contains 4 key/value pairs:

• font_name: Name of font (up to 64 characters)
• font_number: Integer number, between 1 and 255
• char_spacing: Horizontal pixel spacing between characters
• line_spacing: Vertical pixel spacing between lines

font_name: Example font
font_number: 6
char_spacing: 1
line_spacing: 3

The character list can have between 1 and 255 values. Each character has a ch definition and a pixel grid:

• ch: Character number, between 1 and 255, followed by its symbol
• Pixel grid is a rectangular section of . (off) / @ (on) of the character bitmap. All characters in a font must have the same height.

ch: 52 4
...@.
..@@.
.@.@.
@..@.
@@@@@
...@.
...@.

Symbols (ASCII)

Symbols (Latin-1)