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#lang debug racket/base
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(require quad/qexpr
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pollen/tag
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quadwriter/core
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racket/string
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racket/list
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racket/dict
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racket/match
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txexpr/base
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"font.rkt"
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"attrs.rkt")
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(provide (all-defined-out))
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(define (root attrs exprs)
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;; don't put any attributes in root, so they can be overriden by top-level attributes in source
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(qexpr attrs exprs))
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(define-tag-function (p attrs exprs)
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;; no font-family so that it adopts whatever the surrounding family is
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(qexpr (append `((,:keep-first-lines "2")(,:keep-last-lines "3") (,:font-size-adjust "100%") (,:character-tracking "0") (,:hyphenate "true") (,:display ,(symbol->string (gensym)))) attrs) exprs))
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(define-tag-function (hr attrs exprs)
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hrbr)
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(define-tag-function (blockquote attrs exprs)
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(qexpr (append `((,:display "block")
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(,:first-line-indent "0")
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(,:background-color "#eee")
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(,:block-clip "true")
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(,:font-family "blockquote") (,:font-size "10") (,:line-height "14")
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(,:border-width-top "0.5") (,:border-color-top "gray") (,:border-inset-top "8")
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(,:border-width-left "3") (,:border-color-left "gray") (,:border-inset-left "20")
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(,:border-width-bottom "0.5") (,:border-color-bottom "gray") (,:border-inset-bottom "-2")
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(,:border-width-right "0.5") (,:border-color-right "gray") (,:border-inset-right "20")
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(,:inset-top "10") (,:inset-bottom "8") (,:inset-left "30") (,:inset-right "30")
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(,:keep-all-lines "yes"))
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attrs) exprs))
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(define id (default-tag-function 'id))
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(define class (default-tag-function 'class))
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(define-tag-function (strong attrs exprs)
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(qexpr (list* `(,:font-bold "true") `(,:font-size-adjust "100%") attrs) exprs))
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(define b strong)
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(define-tag-function (a attrs exprs)
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(qexpr `((link ,(cadr (assoc :href attrs)))(font-color "MediumVioletRed")) exprs))
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(define-tag-function (em attrs exprs)
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(qexpr (list* `(font-italic "true") `(font-size-adjust "100%") attrs) exprs))
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(define i em)
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(define-syntax-rule (attr-list . attrs) 'attrs)
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(define (heading-base font-size attrs exprs)
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(qexpr (append `((,:font-family "heading") (,:first-line-indent "0") (,:display "block") (,:font-size ,(number->string font-size))(,:line-height ,(number->string (* 1.2 font-size))) (,:border-width-top "0.5")(,:border-inset-top "9") (,:inset-bottom "-3") (,:inset-top "6") (,:keep-with-next "true")) attrs) exprs))
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(define-tag-function (h1 attrs exprs)
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(heading-base 20 attrs exprs))
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(define-tag-function (h2 attrs exprs) (heading-base 16 attrs exprs))
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(define-tag-function (h3 attrs exprs) (heading-base 14 attrs exprs))
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(define h4 h3)
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(define h5 h3)
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(define h6 h3)
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(define-tag-function (code attrs exprs)
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(qexpr (append `((,:font-family "code")#;(,:line-align "right")(,:font-size "10")(,:bg "aliceblue")) attrs) exprs))
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(define-tag-function (pre attrs exprs)
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;; pre needs to convert white space to equivalent layout elements
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(define new-exprs (add-between
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(for*/list ([expr (in-list exprs)]
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[str (in-list (string-split (string-join (get-elements expr) "") "\n"))])
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`(,(get-tag expr) ,(get-attrs expr) ,(string-replace str " " " ")))
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line-break))
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(qexpr (list* `(,:display "block") `(,:background-color "aliceblue")
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`(,:first-line-indent "0")
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`(,:block-clip "true")
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`(,:font-family "code") `(,:font-size "11") `(,:line-height "14")
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`(,:border-inset-top "10")
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`(,:border-width-left "2") `(,:border-color-left "#669") `(,:border-inset-left "0")
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`(,:border-inset-bottom "-4")
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`(,:inset-left "12") `(,:inset-top "12") `(,:inset-bottom "8")
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attrs) new-exprs))
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(define (list-base attrs exprs [bullet-val #f])
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(define bullet-space-factor 2.5)
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(define em (dict-ref attrs :font-size default-font-size))
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(define bullet-indent (* bullet-space-factor em))
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(qexpr (list* `(,:inset-left ,(number->string bullet-indent)) attrs)
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(add-between
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(for/list ([(expr idx) (in-indexed exprs)]
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#:when (txexpr? expr))
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(list* (get-tag expr) (cons (list :list-index (or bullet-val (format "~a" (add1 idx)))) (get-attrs expr)) (get-elements expr)))
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para-break)))
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(define-tag-function (ol attrs exprs) (list-base attrs exprs))
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(define-tag-function (ul attrs exprs) (list-base attrs exprs "•"))
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(define-tag-function (li attrs exprs)
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(define new-bullet-quad (match exprs
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[(cons (txexpr _ attrs _) _)
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(match bullet-quad
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[(txexpr tag battrs elems)
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(define new-attrs
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(hash->attrs
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(copy-block-attrs (attrs->hash attrs) (attrs->hash battrs))))
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(txexpr tag new-attrs elems)])]
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[_ bullet-quad]))
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(qexpr attrs (cons new-bullet-quad exprs))) |