font-with-direction ( font direction/f -- font' )
Font shaping options
Next:font-with-tab-width ( font width/f -- font' )


Vocabulary
fonts.shaping

Inputs
fonta font
direction/fleft-to-right, right-to-left, or f


Outputs
font'a new font


Word description
Sets paragraph reading direction. A false value uses the backend default (left-to-right on DirectWrite and Uniscribe). Bidirectional runs within the paragraph still follow Unicode shaping rules.

Definition
USING: fonts.shaping.private kernel sequences ;

IN: fonts.shaping

: font-with-direction ( font direction/f -- font' )
dup { f left-to-right right-to-left } member?
[ invalid-text-direction ] unless
"direction" swap font-with-option ;