Adam Augusta wrote:
I think I've figured out the formula FOP uses. I'm quite sure it's wrong; the height of the block should simply be line-height, if specified in length, or as a multiplier of the font-size, if specified dimensionless.

It seems to be:
Diff(Ascender,Descender)*font-size/1000 + (line-height - font-size)

FOP adds a half-leading display space above and below the line, the half-leading is computed as (lineHeight - fontState.getFontSize()) / 2

There are numerous inconsistencies in the application though.

J.Pietschmann

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