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Re: [ft] Suggestion/Inquiry: keeping metrics.horiAdvance for emboldened

From: Lawrence D'Oliveiro
Subject: Re: [ft] Suggestion/Inquiry: keeping metrics.horiAdvance for emboldened fixed-width fonts
Date: Thu, 19 Feb 2015 20:14:29 +1300

On Thu, 19 Feb 2015 07:24:30 +0100 (CET), Werner LEMBERG wrote:

> Finally, the correct way to embolden glyphs without increasing the
> advance width is to *move* the glyphs themselves a little to the left
> after emboldening!  Otherwise it can happen that the very right of
> emboldened glyph gets overwritten (or cut off) by the next glyph.

But then, that could cause overwriting/cutting off on the left.

The point being, there is no “correct” way to algorithmically embolden
a font. That is why font design is done by humans, not algorithms.

The further point being, if the app doesn’t want the font metrics to
change, then it should be explicitly using the font metrics for the
original, unemboldened/non-bold font.

Whether that will end up producing ugly results is an entirely separate

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