1129853 - [Header] We should cache the results from measureText

Status: RESOLVED WONTFIX

(Firefox OS Graveyard :: Gaia::Components, defect)

Description

[Julien Wajsberg [:julienw]]

When overflowing, we recalculate the font size using more space; we end up measuring the same text twice.

We should cache the results from measureText in the font-fit library.

Another possibility is to make fontFit run the algorithm instead:
* pass an array of configs to the fontFit algorithm (a config is: available space, min size, max size)
* fontFit would run measureText iteratively until it fits one of the config.
* fontFit would return the fontSize and which config it took

Comment 1

[Julien Wajsberg [:julienw]]

This would win ~3ms max from what i see (and I tried using a Map, the perf is actually worse).

Closing.