If this is Wednesday, it must be...
Mar. 5th, 2003 03:58 pm![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png){kind=small}
terrycloth...time for the Bug From Hell! [cue reverb]
Today I discovered that the ascent and descent on a font are really just sort of guidelines for how to position a font on a page, and don't actually tell you anything useful about how large the characters of the font will actually be when drawn. At least, not in ATSUI.
More importantly, I discovered that the people long ago who wrote all the text layout, positioning, and draw code that I work with didn't know this either. To be fair, they were using QuickDraw, where it wasn't the case.
But now I have to go and... ugh, I don't want to talk about it. -.- I don't want to *do* it either, but I don't have a choice about that.
Today I discovered that the ascent and descent on a font are really just sort of guidelines for how to position a font on a page, and don't actually tell you anything useful about how large the characters of the font will actually be when drawn. At least, not in ATSUI.
More importantly, I discovered that the people long ago who wrote all the text layout, positioning, and draw code that I work with didn't know this either. To be fair, they were using QuickDraw, where it wasn't the case.
But now I have to go and... ugh, I don't want to talk about it. -.- I don't want to *do* it either, but I don't have a choice about that.
