Module rows 

Breaking a shaped paragraph into rows.

The rules are the desktop engine’s (epaint’s), so a run laid out here breaks where the same run breaks on screen: a row ends at the last whitespace that fits, failing that at a dash or a punctuation mark, and failing that anywhere at all — a word wider than the wrap is broken per character rather than overrun.

Structs

Candidates 🔒

Where a row could end, best first. The last whitespace is the break a reader expects; the rest are what a word too wide for the wrap falls back through.

Fit 🔒

What a paragraph is broken to fit: the width a row may fill, and the height every row stands whether or not a glyph is on it.

Enums

Break 🔒

What ended a row: the paragraph it closes, or the wrap width it filled.

Functions

is_cjk 🔒

A logogram or kana — a character that is a word, and so a place a row may end without a space.

may_begin_a_row 🔒

https://en.wikipedia.org/wiki/Line_breaking_rules_in_East_Asian_languages

right_of 🔒

rows_of 🔒

Stack paragraphs — each one a shaped run placed on a single endless row — into the rows that fit wrap.

shifted 🔒

stack 🔒

The rows in order, each at its own height below the one before.

width_of 🔒