main
Matthew Butterick 5 years ago committed by Matthew Butterick
parent 79a1dbf119
commit 2ea1caae13

@ -14,9 +14,7 @@ At the command line:
We said `raco pkg install hyphenate` dude
enated. To hyphenate words of
any length, use `#:min-length` `#f`.
All right then.
A [list of web colors](https://en.wikipedia.org/wiki/Web_colors).
Certain word processors allow users to [insert soft

@ -57,17 +57,17 @@
[(or 'bi 'bo 'baseline-in 'baseline-out) (vertical-baseline-offset q)]
[_ 0])))))
(define (in-point q)
(define (at-point q)
;; calculate absolute location of in-point
;; based on current origin and point type.
;; don't include offset, so location is on bounding box
(anchor->global-point q (quad-in q)))
(anchor->global-point q (quad-at q)))
(define (out-point q)
(define (on-point q)
;; calculate absolute location of out-point
;; based on current origin and point type.
;; don't include offset, so location is on bounding box
(anchor->global-point q (quad-out q)))
(anchor->global-point q (quad-on q)))
(define (anchor->global-point q anchor)
;; don't include shift here: it should be baked into origin calculation
@ -76,10 +76,10 @@
(define (position q [ref-src #f])
;; recursively calculates coordinates for quad & subquads
(define ref-pt (cond
[(quad? ref-src) (anchor->global-point ref-src (quad-out q))]
[(quad? ref-src) (anchor->global-point ref-src (quad-on q))]
[ref-src] ; for passing explicit points in testing
[else (pt 0 0)]))
(define this-origin (pt- ref-pt (in-point q)))
(define this-origin (pt- ref-pt (at-point q)))
(define shifted-origin (pt+ this-origin (quad-shift q)))
;; need to position before recurring, so subquads have accurate reference point
(define positioned-q (struct-copy quad q
@ -101,7 +101,7 @@
[(cons x rest) (loop (cons x prev-elems) rest)]))])))
(define (distance q)
(match (pt- (out-point q) (in-point q))
(match (pt- (on-point q) (at-point q))
[(list-no-order 0 val) val]
[(list ∆x ∆y) (sqrt (+ (expt ∆x 2) (expt ∆y 2)))]))
@ -111,14 +111,14 @@
"origins"
(define size (pt 10 10))
(define orig (pt 5 5))
(check-equal? (quad-origin (position (q #:in 'nw #:size size) orig)) (pt 5 5))
(check-equal? (quad-origin (position (q #:in 'n #:size size) orig)) (pt 0 5))
(check-equal? (quad-origin (position (q #:in 'ne #:size size) orig)) (pt -5 5))
(check-equal? (quad-origin (position (q #:in 'e #:size size) orig)) (pt -5 0))
(check-equal? (quad-origin (position (q #:in 'se #:size size) orig)) (pt -5 -5))
(check-equal? (quad-origin (position (q #:in 's #:size size) orig)) (pt 0 -5))
(check-equal? (quad-origin (position (q #:in 'sw #:size size) orig)) (pt 5 -5))
(check-equal? (quad-origin (position (q #:in 'w #:size size) orig)) (pt 5 0)))
(check-equal? (quad-origin (position (q #:at 'nw #:size size) orig)) (pt 5 5))
(check-equal? (quad-origin (position (q #:at 'n #:size size) orig)) (pt 0 5))
(check-equal? (quad-origin (position (q #:at 'ne #:size size) orig)) (pt -5 5))
(check-equal? (quad-origin (position (q #:at 'e #:size size) orig)) (pt -5 0))
(check-equal? (quad-origin (position (q #:at 'se #:size size) orig)) (pt -5 -5))
(check-equal? (quad-origin (position (q #:at 's #:size size) orig)) (pt 0 -5))
(check-equal? (quad-origin (position (q #:at 'sw #:size size) orig)) (pt 5 -5))
(check-equal? (quad-origin (position (q #:at 'w #:size size) orig)) (pt 5 0)))
(test-case
@ -126,43 +126,43 @@
(define size (pt 10 10))
(define orig (pt 5 5))
(define shift (pt 3 3))
(check-equal? (quad-origin (position (q #:in 'nw #:size size #:shift shift) orig)) (pt+ (pt 5 5) shift))
(check-equal? (quad-origin (position (q #:in 'n #:size size #:shift shift) orig)) (pt+ (pt 0 5) shift))
(check-equal? (quad-origin (position (q #:in 'ne #:size size #:shift shift) orig)) (pt+ (pt -5 5) shift))
(check-equal? (quad-origin (position (q #:in 'e #:size size #:shift shift) orig)) (pt+ (pt -5 0) shift))
(check-equal? (quad-origin (position (q #:in 'se #:size size #:shift shift) orig)) (pt+ (pt -5 -5) shift))
(check-equal? (quad-origin (position (q #:in 's #:size size #:shift shift) orig)) (pt+ (pt 0 -5) shift))
(check-equal? (quad-origin (position (q #:in 'sw #:size size #:shift shift) orig)) (pt+ (pt 5 -5) shift))
(check-equal? (quad-origin (position (q #:in 'w #:size size #:shift shift) orig)) (pt+ (pt 5 0) shift)))
(check-equal? (quad-origin (position (q #:at 'nw #:size size #:shift shift) orig)) (pt+ (pt 5 5) shift))
(check-equal? (quad-origin (position (q #:at 'n #:size size #:shift shift) orig)) (pt+ (pt 0 5) shift))
(check-equal? (quad-origin (position (q #:at 'ne #:size size #:shift shift) orig)) (pt+ (pt -5 5) shift))
(check-equal? (quad-origin (position (q #:at 'e #:size size #:shift shift) orig)) (pt+ (pt -5 0) shift))
(check-equal? (quad-origin (position (q #:at 'se #:size size #:shift shift) orig)) (pt+ (pt -5 -5) shift))
(check-equal? (quad-origin (position (q #:at 's #:size size #:shift shift) orig)) (pt+ (pt 0 -5) shift))
(check-equal? (quad-origin (position (q #:at 'sw #:size size #:shift shift) orig)) (pt+ (pt 5 -5) shift))
(check-equal? (quad-origin (position (q #:at 'w #:size size #:shift shift) orig)) (pt+ (pt 5 0) shift)))
(test-case
"in points"
(define size '(10 10))
(define pos '(5 5))
(check-equal? (in-point (q #:in 'nw #:size size #:origin pos)) (pt 5 5))
(check-equal? (in-point (q #:in 'n #:size size #:origin pos)) (pt 10 5))
(check-equal? (in-point (q #:in 'ne #:size size #:origin pos)) (pt 15 5))
(check-equal? (in-point (q #:in 'w #:size size #:origin pos)) (pt 5 10))
(check-equal? (in-point (q #:in 'c #:size size #:origin pos)) (pt 10 10))
(check-equal? (in-point (q #:in 'e #:size size #:origin pos)) (pt 15 10))
(check-equal? (in-point (q #:in 'sw #:size size #:origin pos)) (pt 5 15))
(check-equal? (in-point (q #:in 's #:size size #:origin pos)) (pt 10 15))
(check-equal? (in-point (q #:in 'se #:size size #:origin pos)) (pt 15 15)))
(check-equal? (at-point (q #:at 'nw #:size size #:origin pos)) (pt 5 5))
(check-equal? (at-point (q #:at 'n #:size size #:origin pos)) (pt 10 5))
(check-equal? (at-point (q #:at 'ne #:size size #:origin pos)) (pt 15 5))
(check-equal? (at-point (q #:at 'w #:size size #:origin pos)) (pt 5 10))
(check-equal? (at-point (q #:at 'c #:size size #:origin pos)) (pt 10 10))
(check-equal? (at-point (q #:at 'e #:size size #:origin pos)) (pt 15 10))
(check-equal? (at-point (q #:at 'sw #:size size #:origin pos)) (pt 5 15))
(check-equal? (at-point (q #:at 's #:size size #:origin pos)) (pt 10 15))
(check-equal? (at-point (q #:at 'se #:size size #:origin pos)) (pt 15 15)))
(test-case
"out points"
(define size (pt 10 10))
(define pos (pt 5 5))
(check-equal? (out-point (q #:out 'nw #:size size #:origin pos)) (pt 5 5))
(check-equal? (out-point (q #:out 'n #:size size #:origin pos)) (pt 10 5))
(check-equal? (out-point (q #:out 'ne #:size size #:origin pos)) (pt 15 5))
(check-equal? (out-point (q #:out 'w #:size size #:origin pos)) (pt 5 10))
(check-equal? (out-point (q #:out 'c #:size size #:origin pos)) (pt 10 10))
(check-equal? (out-point (q #:out 'e #:size size #:origin pos)) (pt 15 10))
(check-equal? (out-point (q #:out 'sw #:size size #:origin pos)) (pt 5 15))
(check-equal? (out-point (q #:out 's #:size size #:origin pos)) (pt 10 15))
(check-equal? (out-point (q #:out 'se #:size size #:origin pos)) (pt 15 15)))
(check-equal? (on-point (q #:on 'nw #:size size #:origin pos)) (pt 5 5))
(check-equal? (on-point (q #:on 'n #:size size #:origin pos)) (pt 10 5))
(check-equal? (on-point (q #:on 'ne #:size size #:origin pos)) (pt 15 5))
(check-equal? (on-point (q #:on 'w #:size size #:origin pos)) (pt 5 10))
(check-equal? (on-point (q #:on 'c #:size size #:origin pos)) (pt 10 10))
(check-equal? (on-point (q #:on 'e #:size size #:origin pos)) (pt 15 10))
(check-equal? (on-point (q #:on 'sw #:size size #:origin pos)) (pt 5 15))
(check-equal? (on-point (q #:on 's #:size size #:origin pos)) (pt 10 15))
(check-equal? (on-point (q #:on 'se #:size size #:origin pos)) (pt 15 15)))
)

@ -35,7 +35,7 @@
(define (quad=? q1 q2 [recur? #t])
(and
;; exclude attrs from initial comparison
(for/and ([getter (in-list (list quad-elems quad-size quad-in quad-out
(for/and ([getter (in-list (list quad-elems quad-size quad-on-parent quad-on quad-at
quad-shift quad-offset quad-on-parent quad-origin quad-printable
quad-draw-start quad-draw-end quad-draw))])
(equal? (getter q1) (getter q2)))
@ -50,9 +50,9 @@
;; size is a two-dim pt
size ; outer size of quad for layout (though not necessarily the bounding box for drawing)
;; in, out are phrased in terms of cardinal position
in ; alignment point on this quad that is matched to `out` on previous quad
out ; alignment point on ref quad
on-parent ; position on parent quad?
on ; alignment point on ref quad
at ; alignment point on this quad that is matched to `out` on previous quad
;; offset, shift are two-dim pts
;; offset= Similar to `relative` CSS positioning
;; relocation of pen before quad is drawn. Does NOT change layout position.
@ -114,9 +114,9 @@
#:attrs [attrs (make-hasheq)]
#:elems [elems null]
#:size [size '(0 0)]
#:in [in 'nw]
#:out [out 'nw]
#:on-parent [on-parent #false]
#:on [on 'nw]
#:at [at 'nw]
#:shift [shift '(0 0)]
#:offset [offset '(0 0)]
#:origin [origin '(0 0)]
@ -134,19 +134,19 @@
[(list elems ..1) (make-quad #:elems elems)]
;; all cases end up below
[null (define args (list
attrs
elems
size
in
out
on-parent
offset
shift
origin
printable
draw-start
draw
draw-end))
attrs
elems
size
on-parent
on
at
offset
shift
origin
printable
draw-start
draw
draw-end))
(define id (eq-hash-code args))
(apply type (append args (list id)))]))

@ -46,8 +46,8 @@
[_ #true]))
(define q:string (q #:type string-quad
#:out 'bo
#:in 'bi
#:on 'bo
#:at 'bi
#:on-parent #false
#:printable q:string-printable?
#:draw q:string-draw
@ -100,7 +100,7 @@
(stroke doc stroke-color)
;; draw in point & out point (both on layout box)
(define point-draw-diameter (+ stroke-width 1.5))
(for ([which-point (list in-point out-point)])
(for ([which-point (list at-point on-point)])
(define pt (which-point q))
(circle doc (pt-x pt) (pt-y pt) point-draw-diameter)
(fill doc fill-color))
@ -110,15 +110,15 @@
(restore doc)))
(define q:line (q #:size (pt 0 default-line-height)
#:out 'sw
#:in 'nw
#:on 'sw
#:at 'nw
#:printable #true
#:draw-start (if draw-debug-line? draw-debug void)))
(struct line-spacer quad () #:transparent)
(define q:line-spacer (q #:type line-spacer
#:size (pt 0 (* default-line-height 0.6))
#:out 'sw
#:on 'sw
#:printable (λ (q sig) (not (memq sig '(start end))))
#:draw-start (if (draw-debug-line?) draw-debug void)))
@ -316,7 +316,7 @@
#:type offsetter
#:offset (pt (quad-ref elem 'inset-left 0) 0)
#:elems elems))))
(attach-to-parent new-elems 'sw))]))]
(on-parent new-elems 'sw))]))]
[_ null])]))
(append new-lines (cond
[ending-q null]
@ -390,24 +390,29 @@
(scale doc (if zoom-mode? zoom-scale 1) (if zoom-mode? zoom-scale 1)))
(define (draw-page-footer q doc)
(define top-margin (pt-y (quad-offset q)))
(define bottom-margin (- (pdf-height doc) top-margin))
(match-define (list x y) (quad-origin q))
(font-size doc (* .8 default-font-size))
(font doc default-font-face)
(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)
(text doc (format "~a · ~a at ~a" (quad-ref q 'page-number 0)
(quad-ref q 'doc-title "untitled")
(date->string (current-date) #t))
(pt-x (quad-offset q))
(+ (- (pdf-height doc) bottom-margin) 20)))
(define (page-draw-end q doc)
#;(draw-page-footer q doc)
(void))
(define q:page (q #:offset '(0 0)
#:draw-start page-draw-start
#:draw-end page-draw-end))
x y))
(define q:footer (q #:size (pt 50 default-line-height)
#:on-parent #true
#:on 'sw
#:at 'nw
#:shift (pt 0 default-line-height)
#:printable #true
#:draw-start (λ (q doc)
(when draw-debug-line?
(draw-debug q doc "goldenrod" "goldenrod"))
(draw-page-footer q doc))))
(define q:page (q
#:on-parent #true
#:draw-start page-draw-start))
(define q:doc (q #:draw-start (λ (q doc) (start-doc doc))
#:draw-end (λ (q doc) (end-doc doc))))
@ -452,11 +457,11 @@
(define (block-wrap lines)
(define first-line (car lines))
(q #:out 'sw
#:in 'nw
(q #:on 'sw
#:at 'nw
#:on-parent #false
#:offset (pt 0 (+ (quad-ref first-line 'inset-top 0)))
#:elems (attach-to-parent lines 'nw)
#:elems (on-parent lines 'nw)
#:size (delay (pt (pt-x (size first-line)) ;
(+ (for/sum ([line (in-list lines)])
(pt-y (size line)))
@ -484,26 +489,24 @@
(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 (attach-to-parent qs where)
(define/match (on-parent qs [where #f])
;; doesn't change any positioning. doesn't depend on state. can happen anytime.
;; can be repeated without damage.
(match qs
[(? null?) null]
[(cons q rest)
(cons (struct-copy quad q
[on-parent #true]
[out where]) rest)]))
(define ((page-finish-wrap page-quad path) lns q0 q idx)
[((? null?) _) null]
[((cons q rest) where)
(cons (struct-copy quad q
[on-parent #true]
[on (or where (quad-on q))]) rest)])
(define ((page-finish-wrap page-quad path) lns q0 q page-idx)
(define-values (dir name _) (split-path (path-replace-extension path #"")))
(define footer (struct-copy quad q:footer
[attrs (let ([h (hash-copy (quad-attrs q:footer))])
(hash-set! h 'page-number page-idx)
(hash-set! h 'doc-title (string-titlecase (path->string name)))
h)]))
(list (struct-copy quad page-quad
[attrs (let ([page-number idx]
[h (hash-copy (quad-attrs page-quad))])
(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 (attach-to-parent (insert-blocks lns) 'nw)])))
[elems (cons footer (on-parent (insert-blocks lns) 'nw))])))
(define (page-wrap xs vertical-height [page-quad q:page])
(unless (positive? vertical-height)
@ -597,8 +600,8 @@
(make-pdf #:compress #t
#:auto-first-page #f
#:output-path pdf-path
#:width 350
#:height 350
#:width page-width
#:height page-height
#:size (quad-ref (car qs) 'page-size default-page-size)
#:orientation (quad-ref (car qs) 'page-orientation default-page-orientation))))
@ -606,7 +609,7 @@
(define default-y-margin (min 72 (floor (* .10 (pdf-width pdf)))))
(parameterize ([current-pdf pdf]
[verbose-quad-printing? #false]
[draw-debug? #true])
[draw-debug? #false])
(let* ([qs (time-name hyphenate (handle-hyphenate qs))]
[qs (map ->string-quad qs)]
[qs (insert-first-line-indents qs)]

@ -6,5 +6,5 @@
(define draw-debug? (make-parameter #f))
(define draw-debug-line? (make-parameter #t))
(define draw-debug-block? (make-parameter #f))
(define draw-debug-block? (make-parameter #t))
(define draw-debug-string? (make-parameter #t))

@ -14,9 +14,9 @@
(qexpr (append `(#;(first-line-indent "12")
#;(line-align "center")
#;(line-wrap "kp")
#;(page-margin-left "120")
#;(page-margin-top "80")
#;(page-margin-bottom "120")
(page-margin-left "120")
(page-margin-top "80")
(page-margin-bottom "120")
(line-height "17")
#;(line-align-last "center")) attrs) exprs))

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