b3002cfab0
The default is that hiniting is enabled, which causes some text metrics (notably width) to be rounded to integer values, which makes spacing more consistent. This default is backward-compatible. The non-default 'unaligned mode refrains from rounding, which makes metric information scale correctly and improves output for PS/PDF (such as Redex output). The `text' function from `slideshow/pict' defaults to disabling hinting --- which is consistent with its default to combine text instead of drawing character-by-character -- so slides and Redex inherit the improvement.
45 lines
2.0 KiB
Racket
45 lines
2.0 KiB
Racket
#lang scribble/doc
|
|
@(require "common.rkt")
|
|
|
|
@defclass/title[font-list% object% ()]{
|
|
|
|
A @racket[font-list%] object maintains a list of @racket[font%]
|
|
objects to avoid repeatedly creating fonts.
|
|
|
|
A global font list, @racket[the-font-list], is created automatically.
|
|
|
|
|
|
@defconstructor[()]{
|
|
|
|
Creates an empty font list.
|
|
|
|
}
|
|
|
|
@defmethod*[([(find-or-create-font [size (integer-in 1 255)]
|
|
[family (one-of/c 'default 'decorative 'roman 'script
|
|
'swiss 'modern 'symbol 'system)]
|
|
[style (one-of/c 'normal 'italic 'slant)]
|
|
[weight (one-of/c 'normal 'bold 'light)]
|
|
[underline? any/c #f]
|
|
[smoothing (one-of/c 'default 'partly-smoothed 'smoothed 'unsmoothed) 'default]
|
|
[size-in-pixels? any/c #f]
|
|
[hinting (or/c 'aligned 'unaligned) 'aligned])
|
|
(is-a?/c font%)]
|
|
[(find-or-create-font [size (integer-in 1 255)]
|
|
[face string?]
|
|
[family (one-of/c 'default 'decorative 'roman 'script
|
|
'swiss 'modern 'symbol 'system)]
|
|
[style (one-of/c 'normal 'italic 'slant)]
|
|
[weight (one-of/c 'normal 'bold 'light)]
|
|
[underline any/c #f]
|
|
[smoothing (one-of/c 'default 'partly-smoothed 'smoothed 'unsmoothed) 'default]
|
|
[size-in-pixels? any/c #f]
|
|
[hinting (or/c 'aligned 'unaligned) 'aligned])
|
|
(is-a?/c font%)])]{
|
|
|
|
Finds an existing font in the list or creates a new one (that is
|
|
automatically added to the list). The arguments are the same as for
|
|
creating a @racket[font%] instance.
|
|
|
|
}}
|