3 ;;;; source file of the GNU LilyPond music typesetter
5 ;;;; (c) 2003--2007 Han-Wen Nienhuys <hanwen@xs4all.nl>
7 (define-public (stack-stencils axis dir padding stils)
8 "Stack stencils STILS in direction AXIS, DIR, using PADDING."
10 ((null? stils) empty-stencil)
11 ((null? (cdr stils)) (car stils))
12 (else (ly:stencil-combine-at-edge
13 (car stils) axis dir (stack-stencils axis dir padding (cdr stils))
16 (define-public (stack-stencils-padding-list axis dir padding stils)
17 "Stack stencils STILS in direction AXIS, DIR, using a list of PADDING."
19 ((null? stils) empty-stencil)
20 ((null? (cdr stils)) (car stils))
21 (else (ly:stencil-combine-at-edge
24 (stack-stencils-padding-list axis dir (cdr padding) (cdr stils))
27 (define-public (centered-stencil stencil)
28 "Center stencil @var{stencil} in both the X and Y directions"
29 (ly:stencil-aligned-to (ly:stencil-aligned-to stencil X CENTER) Y CENTER))
31 (define-public (stack-lines dir padding baseline stils)
32 "Stack vertically with a baseline-skip."
33 (define result empty-stencil)
36 ((last-stencil #f (car p))
43 (let* ((dy (max (+ (* dir (interval-bound (ly:stencil-extent last-stencil Y) dir))
45 (* (- dir) (interval-bound (ly:stencil-extent (car p) Y) (- dir))))
47 (y (+ last-y (* dir dy))))
52 (ly:stencil-add result (ly:stencil-translate-axis (car p) y Y)))
56 (set! result (car p)))))
61 (define-public (bracketify-stencil stil axis thick protusion padding)
62 "Add brackets around STIL, producing a new stencil."
64 (let* ((ext (ly:stencil-extent stil axis))
65 (lb (ly:bracket axis ext thick (- protusion)))
66 (rb (ly:bracket axis ext thick protusion)))
68 (ly:stencil-combine-at-edge stil (other-axis axis) 1 lb padding))
70 (ly:stencil-combine-at-edge stil (other-axis axis) -1 rb padding))
73 (define-public (make-filled-box-stencil xext yext)
77 (list 'round-filled-box (- (car xext)) (cdr xext)
78 (- (car yext)) (cdr yext) 0.0)
81 (define-public (make-circle-stencil radius thickness fill)
82 "Make a circle of radius @var{radius} and thickness @var{thickness}"
84 (list 'circle radius thickness fill)
85 (cons (- radius) radius)
86 (cons (- radius) radius)))
88 (define-public (box-grob-stencil grob)
89 "Make a box of exactly the extents of the grob. The box precisely
90 encloses the contents.
92 (let* ((xext (ly:grob-extent grob grob 0))
93 (yext (ly:grob-extent grob grob 1))
97 (make-filled-box-stencil xext (cons (- (car yext) thick) (car yext)))
98 (make-filled-box-stencil xext (cons (cdr yext) (+ (cdr yext) thick)))
99 (make-filled-box-stencil (cons (cdr xext) (+ (cdr xext) thick)) yext)
100 (make-filled-box-stencil (cons (- (car xext) thick) (car xext)) yext))))
102 ;; TODO merge this and prev function.
103 (define-public (box-stencil stencil thickness padding)
104 "Add a box around STENCIL, producing a new stencil."
105 (let* ((x-ext (interval-widen (ly:stencil-extent stencil 0) padding))
106 (y-ext (interval-widen (ly:stencil-extent stencil 1) padding))
107 (y-rule (make-filled-box-stencil (cons 0 thickness) y-ext))
108 (x-rule (make-filled-box-stencil
109 (interval-widen x-ext thickness) (cons 0 thickness))))
110 (set! stencil (ly:stencil-combine-at-edge stencil X 1 y-rule padding))
111 (set! stencil (ly:stencil-combine-at-edge stencil X -1 y-rule padding))
112 (set! stencil (ly:stencil-combine-at-edge stencil Y 1 x-rule 0.0))
113 (set! stencil (ly:stencil-combine-at-edge stencil Y -1 x-rule 0.0))
116 (define-public (circle-stencil stencil thickness padding)
117 "Add a circle around STENCIL, producing a new stencil."
118 (let* ((x-ext (ly:stencil-extent stencil 0))
119 (y-ext (ly:stencil-extent stencil 1))
120 (diameter (max (- (cdr x-ext) (car x-ext))
121 (- (cdr y-ext) (car y-ext))))
122 (radius (+ (/ diameter 2) padding thickness))
123 (circle (make-circle-stencil radius thickness #f)))
127 (ly:stencil-translate circle
129 (interval-center x-ext)
130 (interval-center y-ext))))))
132 (define-public (rounded-box-stencil stencil thickness padding blot)
133 "Add a rounded box around STENCIL, producing a new stencil."
135 (let* ((xext (interval-widen (ly:stencil-extent stencil 0) padding))
136 (yext (interval-widen (ly:stencil-extent stencil 1) padding))
137 (min-ext (min (-(cdr xext) (car xext)) (-(cdr yext) (car yext))))
138 (ideal-blot (min blot (/ min-ext 2)))
139 (ideal-thickness (min thickness (/ min-ext 2)))
140 (outer (ly:round-filled-box
141 (interval-widen xext ideal-thickness)
142 (interval-widen yext ideal-thickness)
144 (inner (ly:make-stencil (list 'color (x11-color 'white) (ly:stencil-expr (ly:round-filled-box
145 (cons (+ (car xext) ideal-thickness) (- (cdr xext) ideal-thickness))
146 (cons (+ (car yext) ideal-thickness) (- (cdr yext) ideal-thickness))
147 (- ideal-blot (* ideal-thickness 2))))))))
148 (set! stencil (ly:stencil-add outer inner))
152 (define-public (fontify-text font-metric text)
153 "Set TEXT with font FONT-METRIC, returning a stencil."
154 (let* ((b (ly:text-dimension font-metric text)))
156 `(text ,font-metric ,text) (car b) (cdr b))))
158 (define-public (fontify-text-white scale font-metric text)
159 "Set TEXT with scale factor SCALE"
160 (let* ((b (ly:text-dimension font-metric text))
161 ;;urg -- workaround for using ps font
162 (c `(white-text ,(* 2 scale) ,text)))
163 ;;urg -- extent is not from ps font, but we hope it's close
164 (ly:make-stencil c (car b) (cdr b))))
166 (define-public (stencil-with-color stencil color)
168 (list 'color color (ly:stencil-expr stencil))
169 (ly:stencil-extent stencil X)
170 (ly:stencil-extent stencil Y)))
172 (define-public (stencil-whiteout stencil)
174 ((x-ext (ly:stencil-extent stencil X))
175 (y-ext (ly:stencil-extent stencil Y))
180 (stencil-with-color (ly:round-filled-box x-ext y-ext 0.0)
185 (define-public (dimension-arrows destination)
186 "Draw twosided arrow from here to @var{destination}"
191 (rotate (lambda (z ang)
192 (* (make-polar 1 ang)
194 (complex-to-offset (lambda (z)
195 (list (real-part z) (imag-part z))))
197 (z-dest (+ (* e_x (car destination)) (* e_y (cdr destination))))
198 (e_z (/ z-dest (magnitude z-dest)))
199 (triangle-points '(-1+0.25i
202 (p1s (map (lambda (z)
203 (+ z-dest (rotate z (angle z-dest))))
205 (p2s (map (lambda (z)
206 (rotate z (angle (- z-dest))))
211 `(polygon (quote ,(concatenate (map complex-to-offset p1s)))
216 `(polygon (quote ,(concatenate (map complex-to-offset p2s)))
221 (start (complex-to-offset (/ (* e_z shorten-line) 2)))
222 (end (complex-to-offset (- z-dest (/ (* e_z shorten-line) 2))))
224 (line (ly:make-stencil
225 `(draw-line ,thickness
226 ,(car start) ,(cadr start)
227 ,(car end) ,(cadr end)
229 (cons (min 0 (car destination))
230 (min 0 (cdr destination)))
231 (cons (max 0 (car destination))
232 (max 0 (cdr destination)))))
234 (result (ly:stencil-add arrow-2 arrow-1 line)))
239 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
242 ;; annotations are arrows indicating the numerical value of
244 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
246 (define*-public (annotate-y-interval layout name extent is-length
247 #:key (color darkblue))
248 (let ((text-props (cons '((font-size . -3)
249 (font-family . typewriter))
250 (layout-extract-page-properties layout)))
252 (define (center-stencil-on-extent stil)
253 (ly:stencil-translate (ly:stencil-aligned-to stil Y CENTER)
254 (cons 0 (interval-center extent))))
255 ;; do something sensible for 0,0 intervals.
256 (set! extent (interval-widen extent 0.001))
257 (if (not (interval-sane? extent))
258 (set! annotation (interpret-markup
260 (make-simple-markup (simple-format #f "~a: NaN/inf" name))))
261 (let ((text-stencil (interpret-markup
263 (markup #:whiteout #:simple name)))
264 (dim-stencil (interpret-markup
268 ((interval-empty? extent)
271 (ly:format "~$" (interval-length extent)))
274 (car extent) (cdr extent)))))))
275 (arrows (ly:stencil-translate-axis
276 (dimension-arrows (cons 0 (interval-length extent)))
277 (interval-start extent) Y)))
279 (center-stencil-on-extent text-stencil))
281 (ly:stencil-combine-at-edge arrows X RIGHT annotation 0.5))
283 (ly:stencil-combine-at-edge annotation X LEFT
284 (center-stencil-on-extent dim-stencil)
287 (ly:make-stencil (list 'color color (ly:stencil-expr annotation))
288 (ly:stencil-extent annotation X)
289 (cons 10000 -10000)))))
293 (define-public (eps-file->stencil axis size file-name)
295 ((contents (ly:gulp-file file-name))
296 (bbox (get-postscript-bbox (car (string-split contents #\nul))))
297 (bbox-size (if (= axis X)
298 (- (list-ref bbox 2) (list-ref bbox 0))
299 (- (list-ref bbox 3) (list-ref bbox 1))
301 (factor (if (< 0 bbox-size)
302 (exact->inexact (/ size bbox-size))
305 (map (lambda (x) (* factor x)) bbox))
306 (clip-rect-string (ly:format
307 "~a ~a ~a ~a rectclip"
310 (- (list-ref bbox 2) (list-ref bbox 0))
311 (- (list-ref bbox 3) (list-ref bbox 1)))))
322 currentpoint translate
327 " factor clip-rect-string
337 (cons (list-ref scaled-bbox 0) (list-ref scaled-bbox 2))
338 (cons (list-ref scaled-bbox 1) (list-ref scaled-bbox 3)))
340 (ly:make-stencil "" '(0 . 0) '(0 . 0)))
343 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
344 ;; output signatures.
346 (define-public (write-system-signatures basename paper-systems count)
347 (if (pair? paper-systems)
350 ((outname (simple-format #f "~a-~a.signature" basename count)) )
352 (ly:message "Writing ~a" outname)
353 (write-system-signature outname (car paper-systems))
354 (write-system-signatures basename (cdr paper-systems) (1+ count))))))
356 (use-modules (scm paper-system))
357 (define-public (write-system-signature filename paper-system)
359 (and (number? x) (inexact? x)))
362 (paper-system-system-grob paper-system))
364 (define output (open-output-file filename))
366 ;; todo: optionally use a command line flag? Or just junk this?
367 (define compare-expressions #f)
368 (define (strip-floats expr)
369 "Replace floats by #f"
372 ((ly:font-metric? expr) (ly:font-name expr))
373 ((pair? expr) (cons (strip-floats (car expr))
374 (strip-floats (cdr expr))))
377 (define (fold-false-pairs expr)
378 "Try to remove lists of #f as much as possible."
382 (rest (fold-false-pairs (cdr expr))))
385 (cons (fold-false-pairs first) rest)
389 (define (raw-string expr)
390 "escape quotes and slashes for python consumption"
391 (regexp-substitute/global #f "[@\n]" (simple-format #f "~a" expr) 'pre " " 'post))
393 (define (raw-pair expr)
394 (simple-format #f "~a ~a"
395 (car expr) (cdr expr)))
397 (define (found-grob expr)
402 (cause (event-cause grob))
403 (input (if (ly:stream-event? cause) (ly:event-property cause 'origin) #f))
404 (location (if (ly:input-location? input) (ly:input-file-line-char-column input) '()))
406 ;; todo: use stencil extent if available.
407 (x-ext (ly:grob-extent grob system-grob X))
408 (y-ext (ly:grob-extent grob system-grob Y))
410 (if compare-expressions
411 (interpret-for-signature
413 (set! collected (cons e collected)))
417 (simple-format output
419 (cdr (assq 'name (ly:grob-property grob 'meta) ))
420 (raw-string location)
421 (raw-pair (if (interval-empty? x-ext) '(1 . -1) x-ext))
422 (raw-pair (if (interval-empty? y-ext) '(1 . -1) y-ext))
423 (raw-string collected))
426 (define (interpret-for-signature escape collect expr)
427 (define (interpret expr)
429 ((head (if (pair? expr)
434 ((eq? head 'grob-cause) (escape (cdr expr)))
435 ((eq? head 'color) (interpret (caddr expr)))
436 ((eq? head 'rotate-stencil) (interpret (caddr expr)))
437 ((eq? head 'translate-stencil) (interpret (caddr expr)))
438 ((eq? head 'combine-stencil)
439 (for-each (lambda (e) (interpret e)) (cdr expr)))
441 (collect (fold-false-pairs (strip-floats expr))))
447 (if (ly:grob? system-grob)
449 (display (simple-format #f "# Output signature\n# Generated by LilyPond ~a\n" (lilypond-version))
451 (interpret-for-signature found-grob (lambda (x) #f)
453 (paper-system-stencil paper-system)))))
455 ;; should be superfluous, but leaking "too many open files"?