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49 lines
1.5 KiB
Racket
49 lines
1.5 KiB
Racket
#lang debug racket
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(provide (all-defined-out))
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(struct ttf-font (port decoded-tables src directory ft-face hb-font hb-buf crc get-head-table-proc)
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#:mutable
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#:property prop:custom-write
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(λ (f p w?) (display
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(format "<~a ~a>"
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(object-name f)
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(let-values ([(dir name _) (split-path (ttf-font-src f))])
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name)) p)))
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(struct woff-font ttf-font ())
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(define (ft-face this)
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(or (force (ttf-font-ft-face this)) (error 'ft-face-not-available)))
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(define (font-directory this)
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(or (force (ttf-font-directory this)) (error 'directory-not-available)))
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(define (hb-font this)
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(or (force (ttf-font-hb-font this)) (error 'hb-font-not-available)))
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(define (hb-buf this)
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(or (force (ttf-font-hb-buf this)) (error 'hp-buf-not-available)))
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(struct glyph (id codepoints font is-mark? is-ligature? metrics) #:mutable
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#:property prop:custom-write
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(λ (g p w?) (display
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(format "<~a ~a ~a>"
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(object-name g)
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(glyph-id g)
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(glyph-font g)) p)))
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(struct ttf-glyph glyph ())
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; glyphs = list of glyph ids in the subset
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; mapping = of glyph ids to indexes in glyphs
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(struct subset (font glyphs mapping) #:mutable)
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(struct cff-subset subset (cff strings charstrings gsubrs) #:mutable)
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(struct cff-glyph glyph (path _usedGsubrs _usedSubrs) #:mutable)
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(define (make-cff-glyph . args)
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(apply cff-glyph (append args (list #f (make-hash) (make-hash)))))
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(struct index-item (offset length) #:transparent #:mutable) |