|
|
|
|
@ -3,6 +3,7 @@
|
|
|
|
|
racket/match
|
|
|
|
|
racket/runtime-path
|
|
|
|
|
racket/list
|
|
|
|
|
racket/set
|
|
|
|
|
racket/string
|
|
|
|
|
fontland/font-path
|
|
|
|
|
"quad.rkt"
|
|
|
|
|
@ -195,3 +196,52 @@
|
|
|
|
|
#:elems (list (make-quad #:tag 'span
|
|
|
|
|
#:attrs (make-hasheq (list (cons :font-size "200%"))))))))))
|
|
|
|
|
(check-equal? (quad-ref (quad-elems (car (resolve-font-sizes (parse-dimension-strings qs)))) :font-size) 150))
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
(define-pass (resolve-font-features qs)
|
|
|
|
|
;; put a :font-features field in every quad,
|
|
|
|
|
;; Along the way, resolve any :font-features-add and :font-features-subtract attrs.
|
|
|
|
|
#:pre (list-of quad?)
|
|
|
|
|
#:post (λ (qs)
|
|
|
|
|
(for/and ([q (in-list qs)])
|
|
|
|
|
(define attrs (quad-attrs q))
|
|
|
|
|
(and
|
|
|
|
|
(hash-has-key? attrs :font-features)
|
|
|
|
|
(not (hash-has-key? attrs :font-features-add))
|
|
|
|
|
(not (hash-has-key? attrs :font-features-subtract)))))
|
|
|
|
|
|
|
|
|
|
(define (resolve-font-features-once attrs parent-attrs)
|
|
|
|
|
;; if attrs already has an explicit :font-features key, we don't need to calculate it
|
|
|
|
|
(unless (hash-has-key? attrs :font-features)
|
|
|
|
|
;; otherwise we calculate :font-features by looking at the parent features
|
|
|
|
|
;; and adding / removing any indicated.
|
|
|
|
|
(define previous-features
|
|
|
|
|
(let ([parent-attrs (or parent-attrs (hash))])
|
|
|
|
|
(hash-ref parent-attrs :font-features default-no-features)))
|
|
|
|
|
(define features-to-add (hash-ref attrs :font-features-add default-no-features))
|
|
|
|
|
(define features-to-subtract (hash-ref attrs :font-features-subtract default-no-features))
|
|
|
|
|
;; TODO: which order of operations is preferable: add then remove, or remove then add?
|
|
|
|
|
(define these-features
|
|
|
|
|
(set-subtract (set-union previous-features features-to-add) features-to-subtract))
|
|
|
|
|
(hash-set! attrs :font-features these-features))
|
|
|
|
|
;; now that we've got :font-features, we can delete :font-features-add and :font-features-remove
|
|
|
|
|
(hash-remove! attrs :font-features-add)
|
|
|
|
|
(hash-remove! attrs :font-features-subtract))
|
|
|
|
|
|
|
|
|
|
(for-each-attrs qs resolve-font-features-once))
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
(module+ test
|
|
|
|
|
(let ([qs (bootstrap-input
|
|
|
|
|
(make-quad #:tag 'div
|
|
|
|
|
#:attrs (make-hasheq (list (cons :font-features "ss01 liga")))
|
|
|
|
|
#:elems (list (make-quad #:tag 'span
|
|
|
|
|
#:attrs (make-hasheq (list
|
|
|
|
|
(cons :font-features-add "swsh")
|
|
|
|
|
(cons :font-features-subtract "liga")))
|
|
|
|
|
#:elems (list (make-quad #:tag 'span
|
|
|
|
|
#:attrs (make-hasheq (list (cons :font-features "hist")))))))))])
|
|
|
|
|
(define q (car (resolve-font-features (convert-set-attr-values (upgrade-attr-keys qs)))))
|
|
|
|
|
(check-equal? (quad-ref q :font-features) (seteq 'ss01 'liga))
|
|
|
|
|
(check-equal? (quad-ref (car (quad-elems q)) :font-features) (seteq 'ss01 'swsh))
|
|
|
|
|
(check-equal? (quad-ref (car (quad-elems (car (quad-elems q)))) :font-features) (seteq 'hist))))
|
