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#lang debug br/quicklang
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(require racket/promise racket/list sugar/list sugar/debug "quad.rkt" "atomize.rkt" "break.rkt" "qexpr.rkt" "generic.rkt" "position.rkt")
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(require pitfall/document)
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(require hyphenate racket/runtime-path pollen/unstable/typography pollen/tag)
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(provide (rename-out [mb #%module-begin]) (except-out (all-from-out br/quicklang) #%module-begin))
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(define-runtime-path charter "charter.ttf")
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(define soft-break? (λ (q) (and (quad? q) (memv (car (elems q)) '(#\space #\- #\u00AD)))))
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(struct $shim $quad () #:transparent)
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(struct $char $quad () #:transparent)
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(define current-doc (make-parameter #f))
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(define (draw-debug q doc)
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(send doc save)
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(send doc lineWidth 0.25)
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(send/apply doc rect (append (origin q) (size q)))
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(send doc stroke "#fcc")
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(send/apply doc rect (append (origin q) (size q)))
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(send doc clip)
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(send doc circle (pt-x (in-point q)) (pt-y (in-point q)) 1)
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(send doc circle (pt-x (out-point q)) (pt-y (out-point q)) 1)
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(send doc fill "#f99")
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(send doc restore))
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(define char-sizes (make-hash))
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(define (charify q)
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($char (hash-set* (attrs q)
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'in 'bi
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'out 'bo
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'font charter
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'size
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(delay
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(define fontsize (string->number (hash-ref (attrs q) 'fontsize "12")))
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(define str (apply string (elems q)))
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(send* (current-doc)
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[fontSize fontsize]
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[font (path->string charter)])
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(list
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(send (current-doc) widthOfString str)
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(send (current-doc) currentLineHeight)))
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'printable? (case (car (elems q))
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[(#\u00AD) (λ (sig) (memq sig '(end)))]
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[(#\space) (λ (sig) (not (memq sig '(start end))))]
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[else #t])
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'draw (λ (q doc)
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(draw-debug q doc)
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(send doc fontSize (string->number (hash-ref (attrs q) 'fontsize "12")))
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(let ([str (apply string (elems q))])
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(cond
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[(hash-ref (attrs q) 'link #f)
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=>
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(λ (url-str) (apply as-link doc str url-str (origin q)))]
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[else
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#;(println str)
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(send/apply doc text str (origin q))])))) (elems q)))
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(struct $line $quad () #:transparent)
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(struct $page $quad () #:transparent)
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(struct $doc $quad () #:transparent)
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(struct $break $quad () #:transparent)
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(define page-count 1)
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(define (make-break . xs) ($break (hasheq 'printable? #f 'size '(0 0)) xs))
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(define (run-attrs-match left right)
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(define missing (gensym))
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(for/and ([k (in-list '(link weight fontsize))])
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(equal? (hash-ref (attrs left) k missing) (hash-ref (attrs right) k missing))))
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(define (consolidate-runs pcs)
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(for/fold ([runs empty]
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[pcs pcs]
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#:result (reverse runs))
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([i (in-naturals)]
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#:break (empty? pcs))
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(define-values (run-pcs rest) (splitf-at pcs (λ (p) (run-attrs-match (car pcs) p))))
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(define new-run ($char (hash-set (attrs (car pcs))
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'size (delay (list (pt-x (apply map + (map size run-pcs)))
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(pt-y (size (car pcs))))))
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(append-map elems run-pcs)))
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(values (cons new-run runs) rest)))
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(define line-height 16)
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(define consolidate-into-runs? #t)
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(define (line-wrap xs size [debug #f])
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(break xs size debug
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#:break-val (make-break #\newline)
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#:soft-break-proc soft-break?
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#:finish-wrap-proc (λ (pcs) (list ($line (hasheq 'size (list +inf.0 line-height)
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'out 'sw)
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;; consolidate chars into a single run (naively)
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;; by taking attributes from first (including origin)
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;; this only works because there's only one run per line
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;; that is, it suffices to position the first letter
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(if consolidate-into-runs?
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(consolidate-runs pcs)
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pcs))))))
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(define (as-link doc str url-str [x 0] [y 0])
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(send doc save)
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(send doc fillColor "blue")
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(define width (send doc widthOfString str))
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(define height (send doc currentLineHeight))
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(send doc text str x y)
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(send doc link x y width height url-str)
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(send doc restore))
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(define pb ($break (hasheq 'printable? #f
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'size '(0 0)
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'draw (λ (q doc)
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(send doc addPage)
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(send doc fontSize 10)
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(define str (string-append "page " (number->string page-count)))
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;; page number
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(as-link doc str "https://practicaltypography.com" 10 10)
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(set! page-count (add1 page-count)))) '(#\page)))
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(define (page-wrap xs size [debug #f])
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(break xs size debug
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#:break-before? #t
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#:break-val pb
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#:soft-break-proc $break?
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#:finish-wrap-proc (λ (pcs) (list ($page (hasheq 'offset '(36 36)) (filter-not $break? pcs))))))
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(define (typeset qarg)
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(define chars 25)
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(define line-width (* 7.2 chars))
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(define lines-per-page (* 4 line-height))
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(let* ([x (time-name line-wrap (line-wrap (map charify (atomize qarg)) line-width))]
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[x (time-name page-wrap (page-wrap x lines-per-page))]
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[x (time-name position (position ($doc (hasheq) x)))])
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x))
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(provide quad)
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(define quad (default-tag-function 'quad))
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(define (run qin [path "test.pdf"])
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(define doc (time-name make-doc
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(make-object PDFDocument
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(hasheq 'compress #t
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'autoFirstPage #f
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'size '(300 200)))))
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(parameterize ([current-doc doc])
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(time-name config-doc
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(send* doc
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[pipe (open-output-file path #:exists 'replace)]
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[font (path->string charter)]
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[fontSize 12]))
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(define q (typeset qin))
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(time-name draw (draw q doc))
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(time-name end-doc (send doc end))))
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(define-macro (mb . ARGS)
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(with-pattern ([PS (syntax-property #'ARGS 'ps)])
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#'(#%module-begin
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(run (qexpr->quad (quad . ARGS)) PS)
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(void))))
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(module reader syntax/module-reader
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quad/typewriter
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#:read quad-read
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#:read-syntax quad-read-syntax
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#:whole-body-readers? #t ;; need this to make at-reader work
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(require scribble/reader)
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(define (quad-read p) (syntax->datum (quad-read-syntax (object-name p) p)))
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(define (quad-read-syntax path-string p)
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(define quad-at-reader (make-at-reader
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#:syntax? #t
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#:inside? #t
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#:command-char #\◊))
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(syntax-property (quad-at-reader path-string p) 'ps (path-replace-extension path-string #".pdf"))))
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