+;;;; stencil.scm --
+;;;;
+;;;; source file of the GNU LilyPond music typesetter
+;;;;
+;;;; (c) 2003--2006 Han-Wen Nienhuys <hanwen@cs.uu.nl>
-(define-public (stack-stencils axis dir padding mols)
- "Stack stencils MOLS in direction AXIS,DIR, using PADDING."
- (if (null? mols)
- '()
- (if (pair? mols)
- (ly:stencil-combine-at-edge (car mols) axis dir
- (stack-stencils axis dir padding (cdr mols))
- padding
- )
- )
- ))
+(define-public (stack-stencils axis dir padding stils)
+ "Stack stencils STILS in direction AXIS, DIR, using PADDING."
+ (cond
+ ((null? stils) empty-stencil)
+ ((null? (cdr stils)) (car stils))
+ (else (ly:stencil-combine-at-edge
+ (car stils) axis dir (stack-stencils axis dir padding (cdr stils))
+ padding))))
+(define-public (stack-stencils-padding-list axis dir padding stils)
+ "Stack stencils STILS in direction AXIS, DIR, using a list of PADDING."
+ (cond
+ ((null? stils) empty-stencil)
+ ((null? (cdr stils)) (car stils))
+ (else (ly:stencil-combine-at-edge
+ (car stils) axis dir (stack-stencils-padding-list axis dir (cdr padding) (cdr stils))
+ (car padding)))))
-(define-public (stack-lines dir padding baseline mols)
- "Stack vertically with a baseline-skip."
- (if (null? mols)
- '()
- (if (null? (cdr mols))
- (car mols)
- (ly:stencil-combine-at-edge (car mols) Y dir
- (stack-lines dir padding baseline (cdr mols))
- padding baseline
- )
- )))
+(define-public (centered-stencil stencil)
+ "Center stencil @var{stencil} in both the X and Y directions"
+ (ly:stencil-aligned-to (ly:stencil-aligned-to stencil X CENTER) Y CENTER))
-(define-public (fontify-text font-metric text)
- "Set TEXT with font FONT-METRIC, returning a stencil."
- (let* ((b (ly:text-dimension font-metric text)))
- (ly:make-stencil
- (ly:fontify-atom font-metric `(text ,text)) (car b) (cdr b))
- ))
+(define-public (stack-lines dir padding baseline stils)
+ "Stack vertically with a baseline-skip."
+ (if (null? stils)
+ empty-stencil
+ (if (null? (cdr stils))
+ (car stils)
+ (ly:stencil-combine-at-edge
+ (car stils) Y dir
+ (stack-lines dir padding baseline (cdr stils))
+ padding baseline))))
-(define-public (bracketify-stencil mol axis thick protusion padding)
- "Add brackets around MOL, producing a new stencil."
+(define-public (bracketify-stencil stil axis thick protusion padding)
+ "Add brackets around STIL, producing a new stencil."
- (let* ((ext (ly:stencil-get-extent mol axis))
+ (let* ((ext (ly:stencil-extent stil axis))
(lb (ly:bracket axis ext thick (- protusion)))
(rb (ly:bracket axis ext thick protusion)))
- (set! mol (ly:stencil-combine-at-edge mol (other-axis axis) 1 lb padding))
- (set! mol (ly:stencil-combine-at-edge mol (other-axis axis) -1 rb padding))
- mol
- ))
+ (set! stil
+ (ly:stencil-combine-at-edge stil (other-axis axis) 1 lb padding))
+ (set! stil
+ (ly:stencil-combine-at-edge stil (other-axis axis) -1 rb padding))
+ stil))
(define-public (make-filled-box-stencil xext yext)
"Make a filled box."
(ly:make-stencil
- (list 'filledbox (- (car xext)) (cdr xext)
- (- (car yext)) (cdr yext))
- xext yext)
-)
+ (list 'round-filled-box (- (car xext)) (cdr xext)
+ (- (car yext)) (cdr yext) 0.0)
+ xext yext))
+(define-public (make-circle-stencil radius thickness fill)
+ "Make a circle of radius @var{radius} and thickness @var{thickness}"
+ (ly:make-stencil
+ (list 'circle radius thickness fill)
+ (cons (- radius) radius)
+ (cons (- radius) radius)))
(define-public (box-grob-stencil grob)
"Make a box of exactly the extents of the grob. The box precisely
(let* ((xext (ly:grob-extent grob grob 0))
(yext (ly:grob-extent grob grob 1))
(thick 0.1))
+
+ (ly:stencil-add
+ (make-filled-box-stencil xext (cons (- (car yext) thick) (car yext)))
+ (make-filled-box-stencil xext (cons (cdr yext) (+ (cdr yext) thick)))
+ (make-filled-box-stencil (cons (cdr xext) (+ (cdr xext) thick)) yext)
+ (make-filled-box-stencil (cons (- (car xext) thick) (car xext)) yext))))
- (ly:stencil-add (make-filled-box-stencil xext (cons (- (car yext) thick) (car yext) ))
- (make-filled-box-stencil xext (cons (cdr yext) (+ (cdr yext) thick) ))
- (make-filled-box-stencil (cons (cdr xext) (+ (cdr xext) thick)) yext)
- (make-filled-box-stencil (cons (- (car xext) thick) (car xext)) yext))))
+;; TODO merge this and prev function.
+(define-public (box-stencil stencil thickness padding)
+ "Add a box around STENCIL, producing a new stencil."
+ (let* ((x-ext (interval-widen (ly:stencil-extent stencil 0) padding))
+ (y-ext (interval-widen (ly:stencil-extent stencil 1) padding))
+ (y-rule (make-filled-box-stencil (cons 0 thickness) y-ext))
+ (x-rule (make-filled-box-stencil
+ (interval-widen x-ext thickness) (cons 0 thickness))))
+ (set! stencil (ly:stencil-combine-at-edge stencil X 1 y-rule padding))
+ (set! stencil (ly:stencil-combine-at-edge stencil X -1 y-rule padding))
+ (set! stencil (ly:stencil-combine-at-edge stencil Y 1 x-rule 0.0))
+ (set! stencil (ly:stencil-combine-at-edge stencil Y -1 x-rule 0.0))
+ stencil))
+(define-public (circle-stencil stencil thickness padding)
+ "Add a circle around STENCIL, producing a new stencil."
+ (let* ((x-ext (ly:stencil-extent stencil 0))
+ (y-ext (ly:stencil-extent stencil 1))
+ (diameter (max (- (cdr x-ext) (car x-ext))
+ (- (cdr y-ext) (car y-ext))))
+ (radius (+ (/ diameter 2) padding thickness)))
+ (ly:stencil-add
+ (centered-stencil stencil) (make-circle-stencil radius thickness #f))))
-;; TODO merge this and prev function.
-(define-public (box-stencil mol thick padding)
- "Add a box around MOL, producing a new stencil."
- (let* (
- (x-ext (interval-widen (ly:stencil-get-extent mol 0) padding))
- (y-ext (interval-widen (ly:stencil-get-extent mol 1) padding))
- (y-rule (make-filled-box-stencil (cons 0 thick) y-ext))
- (x-rule (make-filled-box-stencil (interval-widen x-ext thick)
- (cons 0 thick)))
- )
- (set! mol (ly:stencil-combine-at-edge mol X 1 y-rule padding))
- (set! mol (ly:stencil-combine-at-edge mol X -1 y-rule padding))
- (set! mol (ly:stencil-combine-at-edge mol Y 1 x-rule 0.0))
- (set! mol (ly:stencil-combine-at-edge mol Y -1 x-rule 0.0))
+(define-public (fontify-text font-metric text)
+ "Set TEXT with font FONT-METRIC, returning a stencil."
+ (let* ((b (ly:text-dimension font-metric text)))
+ (ly:make-stencil
+ `(text ,font-metric ,text) (car b) (cdr b))))
+
+(define-public (fontify-text-white scale font-metric text)
+ "Set TEXT with scale factor s"
+ (let* ((b (ly:text-dimension font-metric text))
+ ;;urg -- workaround for using ps font
+ (c `(white-text ,(* 2 scale) ,text)))
+ ;;urg -- extent is not from ps font, but we hope it's close
+ (ly:make-stencil c (car b) (cdr b))))
+
+(define-public (dimension-arrows destination)
+ "Draw twosided arrow from here to @var{destination}"
+
+ (let*
+ ((e_x 1+0i)
+ (e_y 0+1i)
+ (rotate (lambda (z ang)
+ (* (make-polar 1 ang)
+ z)))
+ (complex-to-offset (lambda (z)
+ (list (real-part z) (imag-part z))))
+
+ (z-dest (+ (* e_x (car destination)) (* e_y (cdr destination))))
+ (e_z (/ z-dest (magnitude z-dest)))
+ (triangle-points '(-1+0.25i
+ 0
+ -1-0.25i))
+ (p1s (map (lambda (z)
+ (+ z-dest (rotate z (angle z-dest))))
+ triangle-points))
+ (p2s (map (lambda (z)
+ (rotate z (angle (- z-dest))))
+ triangle-points))
+ (null (cons 0 0))
+ (arrow-1
+ (ly:make-stencil
+ `(polygon (quote ,(concatenate (map complex-to-offset p1s)))
+ 0.0
+ #t) null null))
+ (arrow-2
+ (ly:make-stencil
+ `(polygon (quote ,(concatenate (map complex-to-offset p2s)))
+ 0.0
+ #t) null null ) )
+ (thickness 0.1)
+ (shorten-line 0.5)
+ (start (complex-to-offset (/ (* e_z shorten-line) 2)))
+ (end (complex-to-offset (- z-dest (/ (* e_z shorten-line) 2))))
+
+ (line (ly:make-stencil
+ `(draw-line ,thickness
+ ,(car start) ,(cadr start)
+ ,(car end) ,(cadr end)
+ )
+ (cons (min 0 (car destination))
+ (min 0 (cdr destination)))
+ (cons (max 0 (car destination))
+ (max 0 (cdr destination)))))
+
+ (result (ly:stencil-add arrow-2 arrow-1 line)))
+
+
+ result))
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;; ANNOTATIONS
+;;
+;; annotations are arrows indicating the numerical value of
+;; spacing variables
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+(define-public (annotate-y-interval layout name extent is-length)
+ ;; do something sensible for 0,0 intervals.
+ (set! extent (interval-widen extent 0.001))
+ (let*
+ ((text-props (cons
+ '((font-size . -3)
+ (font-family . typewriter))
+ (layout-extract-page-properties layout)))
+ (annotation (interpret-markup
+ layout text-props
+ (make-column-markup
+ (list
+ (make-whiteout-markup (make-simple-markup name))
+ (make-whiteout-markup
+ (make-simple-markup
+ (begin
+ (display extent)
+ (cond
+ ((interval-empty? extent) "empty")
+ ((not (interval-sane? extent)) "insane")
+ (is-length (format "~$" (interval-length extent)))
+ (else
+ (format "(~$,~$)" (car extent)
+ (cdr extent)))))))))))
+ (arrows
+ (ly:stencil-translate-axis
+ (dimension-arrows (cons 0 (interval-length extent)))
+ (interval-start extent) Y)))
+
+ (set! annotation
+ (ly:stencil-aligned-to annotation Y CENTER))
- mol))
+ (set! annotation (ly:stencil-translate annotation
+ (cons 0 (interval-center extent))))
+
+ (set! annotation
+ (ly:stencil-combine-at-edge arrows X RIGHT annotation 0.5 0))
+
+ (set! annotation
+ (ly:make-stencil (ly:stencil-expr annotation)
+ (ly:stencil-extent annotation X)
+ (cons 10000 -10000)))
+ annotation))
+
+
+(define-public (eps-file->stencil axis size file-name)
+ (let*
+ ((contents (ly:gulp-file file-name))
+ (bbox (get-postscript-bbox contents))
+ (bbox-size (if (= axis X)
+ (- (list-ref bbox 2) (list-ref bbox 0))
+ (- (list-ref bbox 3) (list-ref bbox 1))
+ ))
+ (factor (exact->inexact (/ size bbox-size)))
+ (scaled-bbox
+ (map (lambda (x) (* factor x)) bbox)))
+
+ (if bbox
+ (ly:make-stencil
+ (list
+ 'embedded-ps
+ (string-append
+ (format
+ "BeginEPSF
+~a ~a scale
+%%BeginDocument: ~a
+" factor factor
+ file-name
+ )
+ contents
+ "%%EndDocument
+EndEPSF"))
+
+ (cons (list-ref scaled-bbox 0) (list-ref scaled-bbox 2))
+ (cons (list-ref scaled-bbox 1) (list-ref scaled-bbox 3)))
+
+ (ly:make-stencil "" '(0 . 0) '(0 . 0)))
+ ))
projects / lilypond.git / blobdiff