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fcft_kerning(3) fcft fcft_kerning(3) NAME fcft_kerning - calculate kerning distance between two wide characters SYNOPSIS #include <fcft/fcft.h> bool fcft_kerning( struct fcft_font *font, uint32_t left, uint32_t right, long *restrict x, long *restrict y); DESCRIPTION fcft_kerning() calculates the kerning distances x (horizontal) and y (ver- tical) between the two wide characters left and right, in pixels. Both characters must exist in the primary font. fcft_kerning() is just a convenience function around FT_Get_Kerning() and as such, it only supports legacy kern tables. In particular, OpenType fonts' GPOS tables are not supported. fcft is not a text shaping library. RETURN VALUE On success, fcft_kerning() returns true, and x and y are updated with the kerning distance, in pixels. On error, false is returned. This may happen for several reasons: * The primary font does not have any kerning information. * One, or both, of the two characters have no corresponding glyph in the primary font. * There is no kerning information for this character combination. EXAMPLE See fcft_from_name() 3.3.3 2026-07-30 fcft_kerning(3)
NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | EXAMPLE
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