[HN Gopher] Font size is useless; let's fix it
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       Font size is useless; let's fix it
        
       Author : garaetjjte
       Score  : 5 points
       Date   : 2023-05-13 15:34 UTC (7 hours ago)
        
 (HTM) web link (tonsky.me)
 (TXT) w3m dump (tonsky.me)
        
       | azornathogron wrote:
       | There is some useful information here, but I'm a little doubtful
       | about some parts.
       | 
       | Specifying font size in terms of cap-height is ok, and I do agree
       | it's kind of annoying that when using the normal font size metric
       | two different fonts with the same nominal size can actually be
       | visually very different. However I think there are some
       | collections of fonts (collections of font families really)
       | created together where the sizes are supposed to harmonize. For
       | example, Sans / Serif / Mono families of a single collection like
       | the Noto fonts are probably (I say probably because I haven't
       | checked! Someone correct me!) designed together so that, eg, some
       | mono text inline in a sans paragraph will look "right" when the
       | same _nominal_ font size is used for both. If you specify cap-
       | height instead you might subtly break that aspect of the design.
       | 
       | But I agree it generally doesn't work to do that for totally
       | separate families (Noto sans + Courier Prime or whatever), and
       | then cap-height will probably give better consistency and be a
       | better starting point.
       | 
       | > I see no reason to honor the so-called "default line-height".
       | It's basically a font designer's personal preference
       | 
       | Well, the whole design of the font is "a font designer's personal
       | preference". Or to put it the other way around, line height (like
       | letter spacing and other metrics) is _part of the design_. You
       | might choose to adjust the design by changing these metrics but
       | the values chosen by the font designer are probably a good place
       | to start. It is probably not a good idea (aesthetically) to
       | choose your line height independently of the actual font you 're
       | using.
       | 
       | Ultimately, there is a lot of subtlety in font design and
       | typography, and purely geometrical approaches (eg, based on
       | actual computed bounding box) tend to fail. If you want the best
       | sizing and spacing, you probably have to work it out by eye for
       | an individual font in a particular context. Since you have to do
       | that, the fact that sizes are specified using a geometrically
       | arbitrary scaling factor is perhaps not a big problem.
        
       | alwillis wrote:
       | Safari is shipping leading-trim and margin-trim [1] in current
       | versions.
       | 
       | [1]: https://www.webkit.org/blog/13966/webkit-features-in-
       | safari-...
        
       | jfultz wrote:
       | Yes, there's a lot of messiness in how fonts work. Doing cross-
       | platform desktop GUI development, I feel that pain firsthand (and
       | not just for fonts, but for all kinds of rendered
       | constructs...controls, lines/curves/polys, bitmaps, windows). But
       | working with pixels is no solution. On macOS, Retina pixels are
       | 1/2 the dimensions of non-Retina pixels (in principle, on Apple
       | hardware...actual dot pitches will vary). "Standard" vs. 2k vs.
       | 4k vs. 8k monitors (not to mention all the things in between).
       | And multiple monitors on the same system might not agree with one
       | another. This is especially common with laptops, where there's
       | really no particular correlation between the laptop's built-in
       | display and the external monitor the user happens to have
       | available.
       | 
       | I can't understand why anybody would consider pixel measurements
       | a viable solution at all. My best attempt to understand what the
       | blog author is wanting to achieve is maybe he wants to fine-tune
       | appearances on his system in a way that doesn't need to be
       | portable. He talks about customizing editor appearances, and I
       | suppose that editors generally don't have the problem of having
       | to do something sensible across multiple systems. But even there,
       | at least some people are still going to have the disagreeing-
       | multiple-monitors problem.
        
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       (page generated 2023-05-13 23:02 UTC)