grub-dev: Font Metrics
11.3 Font Metrics
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* Ascent. The distance from the baseline to the top of most
characters. Note that in some cases characters may extend above
the ascent.
* Descent. The distance from the baseline to the bottom of most
characters. Note that in some cases characters may extend below
the descent.
* Leading. The amount of space, in pixels, to leave between the
descent of one line of text and the ascent of the next line. This
metrics is not specified in the current file format; instead, the
font rendering engine calculates a reasonable leading value based
on the other font metrics.
* Horizonal leading. The amount of space, in pixels, to leave
horizontally between the left and right edges of two adjacent
glyphs. The *device width* field determines the effective leading
value that is used to render the font.
[image src="font_char_metrics.png" text="Please fill this in." ]
An illustration of how the various font metrics apply to characters.
Info Catalog
grub-dev: File Structure
grub-dev: PFF2 Font File Format