|
|
#lang debug racket/base
|
|
|
(require (for-syntax racket/base) txexpr racket/runtime-path racket/string racket/promise racket/match racket/list
|
|
|
pitfall quad sugar/debug pollen/tag racket/unsafe/ops)
|
|
|
(provide (except-out (all-from-out racket/base) #%module-begin)
|
|
|
(rename-out [mb #%module-begin])
|
|
|
p id strong em attr-list h1 h2 h3 h4 h5 h6
|
|
|
ol li ul rsquo lsquo rdquo ldquo hellip ndash mdash
|
|
|
hr
|
|
|
code pre a blockquote)
|
|
|
|
|
|
(define rsquo "’")
|
|
|
(define rdquo "”")
|
|
|
(define lsquo "‘")
|
|
|
(define ldquo "“")
|
|
|
(define hellip "…")
|
|
|
(define ndash "–")
|
|
|
(define mdash "—")
|
|
|
|
|
|
(define-tag-function (p attrs exprs)
|
|
|
(qexpr attrs exprs))
|
|
|
|
|
|
(define-tag-function (hr attrs exprs)
|
|
|
hrbr)
|
|
|
|
|
|
(define-tag-function (blockquote attrs exprs)
|
|
|
(qexpr (list* '(container "bq") '(font "fira") '(fontsize "10") '(line-height "11") '(left-inset "5") attrs) exprs))
|
|
|
|
|
|
(define id (default-tag-function 'id))
|
|
|
(define class (default-tag-function 'class))
|
|
|
|
|
|
(define-tag-function (strong attrs exprs)
|
|
|
(qexpr (cons '(font "charter-bold") attrs) exprs))
|
|
|
|
|
|
(define-tag-function (a attrs exprs)
|
|
|
(qexpr `((link ,(cadr (assoc 'href attrs)))(color "MediumVioletRed")) exprs))
|
|
|
|
|
|
(define-tag-function (em attrs exprs)
|
|
|
(qexpr (cons '(font "charter-italic") attrs) exprs))
|
|
|
|
|
|
(define-syntax-rule (attr-list . attrs) 'attrs)
|
|
|
|
|
|
(define (heading-base font-size attrs exprs)
|
|
|
(qexpr (append `((font "fira-light")(fontsize ,(number->string font-size))(line-height ,(number->string (* 1.2 font-size)))) attrs) exprs))
|
|
|
|
|
|
(define-tag-function (h1 attrs exprs) (heading-base 20 attrs exprs))
|
|
|
(define-tag-function (h2 attrs exprs) (heading-base 16 attrs exprs))
|
|
|
(define-tag-function (h3 attrs exprs) (heading-base 14 attrs exprs))
|
|
|
|
|
|
(define h4 h3)
|
|
|
(define h5 h3)
|
|
|
(define h6 h3)
|
|
|
|
|
|
(define-tag-function (code attrs exprs)
|
|
|
(qexpr (append '((font "fira-mono")(fontsize "10")(bg "aliceblue")) attrs) exprs))
|
|
|
|
|
|
(define-tag-function (pre attrs exprs)
|
|
|
;; pre needs to convert white space to equivalent layout elements
|
|
|
(define new-exprs (add-between
|
|
|
(for*/list ([expr (in-list exprs)]
|
|
|
[str (in-list (string-split (string-join (get-elements expr) "") "\n"))])
|
|
|
`(,(get-tag expr) ,(get-attrs expr) ,str))
|
|
|
lbr))
|
|
|
(qexpr (list* '(container "codeblock") '(line-height "13") '(left-inset "12") '(right-inset "12") attrs) new-exprs))
|
|
|
|
|
|
(define (list-base attrs exprs [bullet-val #f])
|
|
|
(qexpr (list* '(left-inset "20") attrs)
|
|
|
(add-between
|
|
|
(for/list ([(expr idx) (in-indexed exprs)])
|
|
|
(list* (get-tag expr) (cons (list 'list-index (or bullet-val (format "~a." (add1 idx)))) (get-attrs expr)) (get-elements expr)))
|
|
|
pbr)))
|
|
|
|
|
|
(define-tag-function (ol attrs exprs) (list-base attrs exprs))
|
|
|
(define-tag-function (ul attrs exprs) (list-base attrs exprs "•"))
|
|
|
(define-tag-function (li attrs exprs) (qexpr attrs exprs))
|
|
|
|
|
|
(define q:string (q #:in 'bi
|
|
|
#:out 'bo ;; align to baseline
|
|
|
;; printable unless single space, which is not printable at start or end
|
|
|
#:printable (λ (q [sig #f])
|
|
|
(match (quad-elems q)
|
|
|
[(cons elem _)
|
|
|
(case elem
|
|
|
[(" " #\space) (not (memq sig '(start end)))]
|
|
|
[else #true])]
|
|
|
[_ #true]))
|
|
|
;; draw with pdf text routine
|
|
|
#:draw (λ (q doc)
|
|
|
(when (pair? (quad-elems q))
|
|
|
(font doc (path->string (hash-ref (quad-attrs q) 'font)))
|
|
|
(font-size doc (string->number (hash-ref (quad-attrs q) 'fontsize "12")))
|
|
|
(fill-color doc (hash-ref (quad-attrs q) 'color "black"))
|
|
|
(define str (unsafe-car (quad-elems q)))
|
|
|
(match-define (list x y) (quad-origin q))
|
|
|
(text doc str x y
|
|
|
#:bg (hash-ref (quad-attrs q) 'bg #f)
|
|
|
#:features (list (cons #"tnum" 1))
|
|
|
#:link (hash-ref (quad-attrs q) 'link #f))))
|
|
|
#:draw-end (λ (q doc) (draw-debug q doc "#99f" "#ccf"))))
|
|
|
|
|
|
(define-runtime-path charter "fonts/charter.ttf")
|
|
|
(define-runtime-path charter-bold "fonts/charter-bold.ttf")
|
|
|
(define-runtime-path charter-italic "fonts/charter-italic.ttf")
|
|
|
(define-runtime-path fira "fonts/fira.ttf")
|
|
|
(define-runtime-path fira-light "fonts/fira-light.ttf")
|
|
|
(define-runtime-path fira-mono "fonts/fira-mono.ttf")
|
|
|
|
|
|
(define default-font-face charter)
|
|
|
(define default-font-size "12")
|
|
|
|
|
|
(define (->string-quad doc q)
|
|
|
(cond
|
|
|
[(line-break? q) q]
|
|
|
[else
|
|
|
(struct-copy
|
|
|
quad q:string
|
|
|
[attrs (let ([attrs (quad-attrs q)])
|
|
|
;; attrs hashes are shared between many quads.
|
|
|
;; so the first update will change every reference to the shared hash
|
|
|
;; hence why we ignore if val is already a path
|
|
|
;; but this op should ideally happen earlier
|
|
|
(hash-update! attrs 'font
|
|
|
(λ (val) (if (path? val)
|
|
|
val
|
|
|
(match (string-downcase (string-replace val " " "-"))
|
|
|
["charter" charter]
|
|
|
["charter-bold" charter-bold]
|
|
|
["charter-italic" charter-italic]
|
|
|
["fira" fira]
|
|
|
["fira-light" fira-light]
|
|
|
["fira-mono" fira-mono])))
|
|
|
default-font-face)
|
|
|
(hash-ref! attrs 'fontsize default-font-size)
|
|
|
attrs)]
|
|
|
[elems (quad-elems q)]
|
|
|
[size (delay
|
|
|
(define fontsize (string->number (hash-ref (quad-attrs q) 'fontsize)))
|
|
|
(font-size doc fontsize)
|
|
|
(font doc (path->string (hash-ref (quad-attrs q) 'font)))
|
|
|
(define str (if (pair? (quad-elems q)) (unsafe-car (quad-elems q)) ""))
|
|
|
(define line-height (cond
|
|
|
[(and (pair? (quad-elems q))
|
|
|
(string->number (quad-ref q 'line-height "NaN")))]
|
|
|
[else (current-line-height doc)]))
|
|
|
(pt (string-width doc str) line-height))])]))
|
|
|
|
|
|
(define draw-debug? #t)
|
|
|
(define (draw-debug q doc [fill-color "#f99"] [stroke-color "#fcc"])
|
|
|
(when draw-debug?
|
|
|
(save doc)
|
|
|
(line-width doc 0.5)
|
|
|
(apply rect doc (append (quad-origin q) (size q)))
|
|
|
(stroke doc stroke-color)
|
|
|
(circle doc (pt-x (in-point q)) (pt-y (in-point q)) 2)
|
|
|
(circle doc (pt-x (out-point q)) (pt-y (out-point q)) 2)
|
|
|
(fill doc fill-color)
|
|
|
(rect-centered doc (pt-x (inner-point q)) (pt-y (inner-point q)) 2)
|
|
|
(fill doc stroke-color)
|
|
|
(restore doc)))
|
|
|
|
|
|
(define line-height 20)
|
|
|
(define dumb-hardcoded-value 380.1234)
|
|
|
(define q:line (q #:size (pt dumb-hardcoded-value line-height)
|
|
|
#:in 'nw
|
|
|
#:inner 'sw ; puts baseline at lower right corner of line box
|
|
|
#:out 'sw
|
|
|
#:printable #true
|
|
|
#:draw-start draw-debug))
|
|
|
(struct line-spacer quad () #:transparent)
|
|
|
(define q:line-spacer (q #:type line-spacer
|
|
|
#:size (pt dumb-hardcoded-value (* line-height 0.6))
|
|
|
#:out 'sw
|
|
|
#:printable (λ (q sig) (not (memq sig '(start end))))
|
|
|
#:draw-start draw-debug))
|
|
|
|
|
|
(define softies (map string '(#\space #\- #\u00AD)))
|
|
|
|
|
|
(define (soft-break-for-line? q)
|
|
|
(and (pair? (quad-elems q))
|
|
|
(member (unsafe-car (quad-elems q)) softies)))
|
|
|
|
|
|
(define (consolidate-runs pcs)
|
|
|
(for/fold ([runs empty]
|
|
|
[pcs pcs]
|
|
|
#:result (reverse runs))
|
|
|
([i (in-naturals)]
|
|
|
#:break (empty? pcs))
|
|
|
(define-values (run-pcs rest) (splitf-at pcs (λ (p) (same-run? (car pcs) p))))
|
|
|
(define new-run (struct-copy quad q:string
|
|
|
[attrs (quad-attrs (car pcs))]
|
|
|
[elems (merge-adjacent-strings (apply append (for/list ([pc (in-list run-pcs)])
|
|
|
(quad-elems pc))))]
|
|
|
[size (delay (pt (for/sum ([pc (in-list run-pcs)])
|
|
|
(pt-x (size pc)))
|
|
|
(pt-y (size (car pcs)))))]))
|
|
|
(values (cons new-run runs) rest)))
|
|
|
|
|
|
(define-quad line-break quad ())
|
|
|
(define lbr (make-line-break #:printable #f))
|
|
|
;; treat paragraph break as special kind of line break
|
|
|
(define-quad para-break line-break ())
|
|
|
(define pbr (make-para-break #:printable #f))
|
|
|
(define-quad hr-break para-break ())
|
|
|
(define hrbr (make-hr-break #:printable #t))
|
|
|
|
|
|
(module+ test
|
|
|
(check-true (line-break? (second (quad-elems (q "foo" pbr "bar")))))
|
|
|
(check-true (line-break? (second (atomize (q "foo" pbr "bar"))))))
|
|
|
|
|
|
(define (line-wrap xs wrap-size)
|
|
|
(wrap xs (λ (q idx) (- wrap-size (string->number (quad-ref q 'left-inset "0"))
|
|
|
(string->number (quad-ref q 'right-inset "0"))))
|
|
|
#:hard-break line-break?
|
|
|
#:soft-break soft-break-for-line?
|
|
|
#:finish-wrap
|
|
|
(λ (pcs q idx)
|
|
|
(append
|
|
|
(cond
|
|
|
[(empty? pcs) null]
|
|
|
[(hr-break? q)
|
|
|
(list (struct-copy quad q:line
|
|
|
[draw-start (λ (dq doc)
|
|
|
(save doc)
|
|
|
(match-define (list left top) (quad-origin dq))
|
|
|
(match-define (list right bottom)(size dq))
|
|
|
(translate doc left (+ top (/ bottom 2)))
|
|
|
(move-to doc 0 0)
|
|
|
(line-to doc right 0)
|
|
|
(line-width doc 3)
|
|
|
(stroke doc "#999")
|
|
|
(restore doc))]))]
|
|
|
[else
|
|
|
|
|
|
(define new-elems (consolidate-runs pcs))
|
|
|
(cond
|
|
|
[(pair? new-elems)
|
|
|
(list (struct-copy quad q:line
|
|
|
[attrs (let ([attrs (hash-copy (quad-attrs q:line))])
|
|
|
(define container-val (quad-ref (unsafe-car new-elems) 'container))
|
|
|
(when (and container-val
|
|
|
(for/and ([elem (in-list (unsafe-cdr new-elems))])
|
|
|
(equal? (quad-ref elem 'container)
|
|
|
container-val)))
|
|
|
(hash-set! attrs 'container container-val))
|
|
|
attrs)]
|
|
|
[size (let ()
|
|
|
(define line-heights
|
|
|
(filter-map
|
|
|
(λ (q) (string->number (quad-ref q 'line-height "NaN")))
|
|
|
pcs))
|
|
|
(match-define (list w h) (quad-size q:line))
|
|
|
(pt w (if (empty? line-heights) h (apply max line-heights))))]
|
|
|
[elems new-elems]
|
|
|
[offset (pt
|
|
|
(string->number (quad-ref (car new-elems) 'left-inset "0"))
|
|
|
(second (quad-offset q:line)))]
|
|
|
[draw-end (match (and (or (para-break? q) (not q))
|
|
|
(quad-ref (car new-elems) 'list-index))
|
|
|
[#false void]
|
|
|
[val (λ (q doc)
|
|
|
(save doc)
|
|
|
(match-define (list x y)
|
|
|
(quad-origin (car (quad-elems q))))
|
|
|
(text doc val x y)
|
|
|
(restore doc))])]))]
|
|
|
[else null])])
|
|
|
(if (and (para-break? q) (not (hr-break? q)))
|
|
|
(list q:line-spacer)
|
|
|
null)))))
|
|
|
|
|
|
(define top-margin 60)
|
|
|
(define bottom-margin 120)
|
|
|
(define side-margin 120)
|
|
|
(define page-offset (pt (/ side-margin 3) (/ top-margin 3)))
|
|
|
(require racket/date)
|
|
|
(define q:page (q #:offset page-offset
|
|
|
#:draw-start (λ (q doc) (add-page doc)
|
|
|
(scale doc 2 2))
|
|
|
#:draw-end (λ (q doc)
|
|
|
(font-size doc 10)
|
|
|
(font doc charter)
|
|
|
(fill-color doc "black")
|
|
|
(text doc (format "~a · ~a at ~a" (hash-ref (quad-attrs q) 'page-number)
|
|
|
(hash-ref (quad-attrs q) 'doc-title)
|
|
|
(date->string (current-date) #t))
|
|
|
side-margin
|
|
|
(+ (- (pdf-height doc) bottom-margin) 20)))))
|
|
|
|
|
|
(define q:doc (q #:draw-start (λ (q doc) (start-doc doc))
|
|
|
#:draw-end (λ (q doc) (end-doc doc))))
|
|
|
|
|
|
(define (make-blockquote pcs)
|
|
|
(q #:attrs (hasheq 'type "bq")
|
|
|
#:in 'nw
|
|
|
#:out 'sw
|
|
|
#:elems pcs
|
|
|
#:size (delay (pt (pt-x (size (car pcs)))
|
|
|
(for/sum ([pc (in-list pcs)])
|
|
|
(pt-y (size pc)))))
|
|
|
#:draw-start (λ (q doc)
|
|
|
(save doc)
|
|
|
(match-define (list left top) (quad-origin q))
|
|
|
(match-define (list right bottom) (size q))
|
|
|
#;(rect doc (- left 4) (+ top 6) right (+ bottom 2))
|
|
|
(rect doc left top right (+ bottom 4))
|
|
|
(line-width doc 1)
|
|
|
(fill-and-stroke doc "#eee" "#999")
|
|
|
(restore doc))))
|
|
|
|
|
|
(define (make-codeblock pcs)
|
|
|
(q #:attrs (hasheq 'type "codeblock")
|
|
|
#:in 'nw
|
|
|
#:out 'sw
|
|
|
#:elems pcs
|
|
|
#:size (delay (pt (pt-x (size (car pcs)))
|
|
|
(for/sum ([pc (in-list pcs)])
|
|
|
(pt-y (size pc)))))
|
|
|
#:draw-start (λ (q doc)
|
|
|
(save doc)
|
|
|
(match-define (list left top) (quad-origin q))
|
|
|
(match-define (list right bottom) (size q))
|
|
|
(translate doc (- left 4) (+ top 6)) ; reset origin to top left of quad
|
|
|
(rect doc 0 0 right (+ bottom 2))
|
|
|
(fill doc "aliceblue")
|
|
|
(define vert-line-width 6)
|
|
|
(move-to doc (/ vert-line-width 2) 0) ; affirmatively move cursor
|
|
|
(line-to doc (/ vert-line-width 2) bottom) ; strictly vert line
|
|
|
(line-width doc vert-line-width)
|
|
|
(stroke doc "#669")
|
|
|
#;(move-to doc 0 0) ; affirmatively move cursor
|
|
|
#;(line-to doc 0 bottom) ; strictly horiz line
|
|
|
#;(stroke doc "gray")
|
|
|
#;(translate doc 0 (+ bottom 2)) ; reset origin
|
|
|
#;(move-to doc 0 0) ; move again
|
|
|
#;(line-to doc right 0) ; same line, translated
|
|
|
(stroke doc "gray")
|
|
|
(restore doc))))
|
|
|
|
|
|
(define (contiguous-group-by pred xs)
|
|
|
;; like `group-by`, but only groups together contiguous xs with the same pred value.
|
|
|
(let loop ([xs xs][groups null])
|
|
|
(match xs
|
|
|
[(== empty) (reverse groups)]
|
|
|
[(cons first-x other-xs)
|
|
|
(define equivalence-val (pred first-x))
|
|
|
(define-values (group-members rest) (splitf-at other-xs (λ (x) (equal? (pred x) equivalence-val))))
|
|
|
(define new-group (cons first-x group-members)) ; group-members might be empty
|
|
|
(loop rest (cons new-group groups))])))
|
|
|
|
|
|
(module+ test
|
|
|
(require rackunit)
|
|
|
(check-equal?
|
|
|
(contiguous-group-by values '(1 1 2 2 2 3 4 5 5 6 6 7 8 9))
|
|
|
'((1 1) (2 2 2) (3) (4) (5 5) (6 6) (7) (8) (9))))
|
|
|
|
|
|
(define (page-wrap xs vertical-height path)
|
|
|
(wrap xs vertical-height
|
|
|
#:soft-break line-spacer?
|
|
|
#:wrap-anywhere? #t
|
|
|
#:finish-wrap (λ (lns q idx)
|
|
|
(list (struct-copy quad q:page
|
|
|
[attrs (let ([page-number idx]
|
|
|
[h (hash-copy (quad-attrs q:page))])
|
|
|
(hash-set! h 'page-number page-number)
|
|
|
(define-values (dir name _)
|
|
|
(split-path (path-replace-extension path #"")))
|
|
|
(hash-set! h 'doc-title (string-titlecase (path->string name)))
|
|
|
h)]
|
|
|
[elems lns])))))
|
|
|
|
|
|
(define (insert-containers pages)
|
|
|
;; container recomposition happens after page composition because page breaks can happen between lines.
|
|
|
;; iow, the lines within a container may be split over multiple pages, each of which should be drawn
|
|
|
;; as a separate container
|
|
|
(for/list ([page (in-list pages)])
|
|
|
(define lns (quad-elems page))
|
|
|
(define groups (contiguous-group-by (λ (x) (hash-ref (quad-attrs x) 'container #f)) lns))
|
|
|
(define lns-and-containers (append* (for/list ([grp (in-list groups)])
|
|
|
(match (hash-ref (quad-attrs (car grp)) 'container #f)
|
|
|
["bq" (list (make-blockquote grp))]
|
|
|
["codeblock" (list (make-codeblock grp))]
|
|
|
[_ grp]))))
|
|
|
(struct-copy quad page [elems lns-and-containers])))
|
|
|
|
|
|
(define (run xs path)
|
|
|
(define pdf (time-name make-pdf (make-pdf #:compress #t
|
|
|
#:auto-first-page #f
|
|
|
#:output-path path
|
|
|
#:width 350
|
|
|
#:height 400)))
|
|
|
(define line-width (- (pdf-width pdf) (* 2 side-margin)))
|
|
|
(define vertical-height (- (pdf-height pdf) top-margin bottom-margin))
|
|
|
(let* ([x (time-name atomize (atomize (qexpr->quad xs)))]
|
|
|
[x (time-name ->string-quad (map (λ (x) (->string-quad pdf x)) x))]
|
|
|
[x (time-name line-wrap (line-wrap x line-width))]
|
|
|
[x (time-name page-wrap (page-wrap x vertical-height path))]
|
|
|
[x (time-name insert-containers (insert-containers x))]
|
|
|
[x (time-name position (position (struct-copy quad q:doc [elems x])))])
|
|
|
(time-name draw (draw x pdf))))
|
|
|
|
|
|
(define-syntax (mb stx)
|
|
|
(syntax-case stx ()
|
|
|
[(_ PDF-PATH . STRS)
|
|
|
#'(#%module-begin
|
|
|
;; stick an nbsp in the strings so we have one printing char
|
|
|
(define strs (match (list . STRS)
|
|
|
[(? null?) '(" ")]
|
|
|
[strs strs]))
|
|
|
(define qx (list* 'q null (add-between strs pbr)))
|
|
|
(run qx PDF-PATH))]))
|
|
|
|
|
|
(module+ reader
|
|
|
(require scribble/reader syntax/strip-context (only-in markdown parse-markdown)
|
|
|
racket/match txexpr)
|
|
|
(provide (rename-out [quad-read-syntax read-syntax]))
|
|
|
|
|
|
|
|
|
(define (xexpr->parse-tree x)
|
|
|
;; an ordinary txexpr can't serve as a parse tree because of the attrs list fails when passed to #%app.
|
|
|
;; so stick an `attr-list` identifier on it which can hook into the expander.
|
|
|
;; sort of SXML-ish.
|
|
|
(let loop ([x x])
|
|
|
(match x
|
|
|
[(txexpr tag attrs elems) (list* tag (cons 'attr-list attrs) (map loop elems))]
|
|
|
[(? list? xs) (map loop xs)]
|
|
|
[_ x])))
|
|
|
|
|
|
(define (quad-read-syntax path-string p)
|
|
|
(define quad-at-reader (make-at-reader
|
|
|
#:syntax? #t
|
|
|
#:inside? #t
|
|
|
#:command-char #\◊))
|
|
|
(define stx (quad-at-reader path-string p))
|
|
|
(define parsed-stx (datum->syntax stx (xexpr->parse-tree (parse-markdown (apply string-append (syntax->datum stx))))))
|
|
|
(strip-context
|
|
|
(with-syntax ([PT parsed-stx]
|
|
|
[PDF-PATH (path-replace-extension path-string #".pdf")])
|
|
|
#'(module _ qtest/markdown
|
|
|
PDF-PATH
|
|
|
. PT)))))
|