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Draw :-> and :--> ourselves, similar to --> and friends.

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svn: r13698
This commit is contained in:
Stevie Strickland 2009-02-17 16:14:12 +00:00
parent e21ecbe074
commit 560836a804
2 changed files with 22 additions and 3 deletions
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13
collects/redex/private/arrow.ss
View File

@ -7,7 +7,7 @@
(provide/contract (provide/contract
[make-arrow-pict [make-arrow-pict
(-> string? (-> string?
(symbols 'curvy 'straight 'straight-double) (symbols 'curvy 'straight 'straight-double 'map)
symbol? symbol?
number? number?
(-> pict?))]) (-> pict?))])
@ -71,6 +71,17 @@
(case style (case style
[(curvy) [(curvy)
(send dc draw-path path dx dy)] (send dc draw-path path dx dy)]
[(map)
(send dc draw-line
dx
(- (+ dy line-pos) (/ head-height 2))
dx
(+ (+ dy line-pos) (/ head-height 2)))
(send dc draw-line
dx
(+ dy line-pos)
(+ dx w)
(+ dy line-pos))]
[(straight) [(straight)
(send dc draw-line (send dc draw-line
dx dx

12
collects/redex/private/pict.ss
View File

@ -344,6 +344,8 @@
(define short-curvy-arrow-pict (mk-arrow-pict "m" 'curvy)) (define short-curvy-arrow-pict (mk-arrow-pict "m" 'curvy))
(define double-arrow-pict (mk-arrow-pict "xxx" 'straight-double)) (define double-arrow-pict (mk-arrow-pict "xxx" 'straight-double))
(define short-double-arrow-pict (mk-arrow-pict "m" 'straight-double)) (define short-double-arrow-pict (mk-arrow-pict "m" 'straight-double))
(define map-arrow-pict (mk-arrow-pict "m" 'map))
(define long-map-arrow-pict (mk-arrow-pict "xxx" 'map))
(define user-arrow-table (make-hasheq)) (define user-arrow-table (make-hasheq))
(define (set-arrow-pict! arr thunk) (define (set-arrow-pict! arr thunk)
@ -362,8 +364,14 @@
[(>->) (basic-text "\u21a3" (default-style))] [(>->) (basic-text "\u21a3" (default-style))]
[(~~>) (curvy-arrow-pict)] [(~~>) (curvy-arrow-pict)]
[(~>) (short-curvy-arrow-pict)] [(~>) (short-curvy-arrow-pict)]
[(:->) (basic-text "\u21a6" (default-style))] [(:->)
[(:-->) (basic-text "\u27fc" (default-style))] (if STIX?
(basic-text "\u21a6" (default-style))
(map-arrow-pict))]
[(:-->)
(if STIX?
(basic-text "\u27fc" (default-style))
(long-map-arrow-pict))]
[(c->) (basic-text "\u21aa" (default-style))] [(c->) (basic-text "\u21aa" (default-style))]
[(-->>) (basic-text "\u21a0" (default-style))] [(-->>) (basic-text "\u21a0" (default-style))]
[(>--) (basic-text "\u291a" (default-style))] [(>--) (basic-text "\u291a" (default-style))]