X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=scm%2Fdefine-markup-commands.scm;h=3e7b2f2308f2e61d35282743328ded3e69d90a81;hb=HEAD;hp=e3d6cc581b6d50198f64a36a940f971a9456de29;hpb=eadbe19c831900eab4aec87c394d5ac8f2ee3bb5;p=lilypond.git

diff --git a/scm/define-markup-commands.scm b/scm/define-markup-commands.scm
index e3d6cc581b..3e7b2f2308 100644
--- a/scm/define-markup-commands.scm
+++ b/scm/define-markup-commands.scm
@@ -306,6 +306,87 @@ line-length.
                       new-props
                       (markup #:draw-dashed-line dest))))
 
+(define-markup-command (draw-squiggle-line layout props sq-length dest eq-end?)
+  (number? number-pair? boolean?)
+  #:category graphic
+  #:properties ((thickness 0.5)
+                (angularity 0)
+                (height 0.5)
+                (orientation 1))
+  "
+@cindex drawing squiggled lines within text
+
+A squiggled line.
+
+If @code{eq-end?} is set to @code{#t}, it is ensured the squiggled line ends
+with a bow in same direction as the starting one.  @code{sq-length} is the
+length of the first bow.  @code{dest} is the end point of the squiggled line.
+To match @code{dest} the squiggled line is scaled accordingly.
+Its appearance may be customized by overrides for @code{thickness},
+@code{angularity}, @code{height} and @code{orientation}.
+@lilypond[verbatim,quote]
+\\markup
+  \\column {
+    \\draw-squiggle-line #0.5 #'(6 . 0) ##t
+    \\override #'(orientation . -1)
+    \\draw-squiggle-line #0.5 #'(6 . 0) ##t
+    \\draw-squiggle-line #0.5 #'(6 . 0) ##f
+    \\override #'(height . 1)
+    \\draw-squiggle-line #0.5 #'(6 . 0) ##t
+    \\override #'(thickness . 5)
+    \\draw-squiggle-line #0.5 #'(6 . 0) ##t
+    \\override #'(angularity . 2)
+    \\draw-squiggle-line #0.5 #'(6 . 0) ##t
+  }
+@end lilypond"
+  (let* ((line-thickness (ly:output-def-lookup layout 'line-thickness))
+         (thick (* thickness line-thickness))
+         (x (car dest))
+         (y (cdr dest))
+         (length-to-print (magnitude (make-rectangular x y)))
+         ;; Make a guess how many bows may be needed
+         (guess (max 1 (truncate (/ length-to-print sq-length))))
+         ;; If `eq-end?' is set #t, make sure squiggle-line starts and ends
+         ;; with a bow in same direction
+         (amount (if (and (even? guess) eq-end?) (1+ guess) guess))
+         ;; The lined-up bows needs to fit `length-to-print'
+         ;; Thus scale the length of first bow accordingly
+         ;; Other bows are copies
+         (guessed-squiggle-line-length (* amount sq-length))
+         (line-length-diff (- length-to-print guessed-squiggle-line-length))
+         (line-length-diff-for-each-squiggle
+           (/ line-length-diff amount))
+         (first-bow-length (+ sq-length line-length-diff-for-each-squiggle))
+         ;; Get first bows
+         ;; TODO two bows are created via `make-bow-stencil'
+         ;;      cheaper to use `ly:stencil-scale'?
+         (first-bow-end-coord
+           (cons
+             (/ (* first-bow-length x) length-to-print)
+             (/ (* first-bow-length y) length-to-print)))
+         (init-bow
+           (lambda (o)
+             (make-bow-stencil
+               '(0 . 0)
+               first-bow-end-coord
+               thick angularity height o)))
+         (init-bow-up (init-bow orientation))
+         (init-bow-down (init-bow (- orientation)))
+         ;; Get a list of starting-points for the bows
+         (list-of-starts
+           (map
+             (lambda (n)
+               (cons
+                 (* n (car first-bow-end-coord))
+                 (* n (cdr first-bow-end-coord))))
+             (iota amount))))
+    ;; The final stencil: lined-up bows
+    (apply ly:stencil-add
+      (map
+        ly:stencil-translate
+        (circular-list init-bow-up init-bow-down)
+        list-of-starts))))
+
 (define-markup-command (draw-hline layout props)
   ()
   #:category graphic
@@ -615,6 +696,95 @@ thickness, and @code{offset} to determine line y-offset.
          (line (make-line-stencil underline-thick x1 y x2 y)))
     (ly:stencil-add m line)))
 
+(define-markup-command (tie layout props arg)
+  (markup?)
+  #:category font
+  #:properties ((thickness 1)
+                (offset 2)
+                (direction UP)
+                (shorten-pair '(0 . 0)))
+  "
+@cindex tie-ing text
+
+Adds a horizontal bow created with @code{make-tie-stencil} at bottom or top
+of @var{arg}.  Looks at @code{thickness} to determine line thickness, and
+@code{offset} to determine y-offset.  The added bow fits the extent of
+@var{arg}, @code{shorten-pair} may be used to modify this.
+@var{direction} may be set using an @code{override} or direction-modifiers or
+@code{voiceOne}, etc.
+
+@lilypond[verbatim,quote]
+\\markup {
+  \\override #'(direction . 1)
+  \\tie \"above\"
+  \\override #'(direction . -1)
+  \\tie \"below\"
+}
+@end lilypond"
+  (let* ((line-thickness (ly:output-def-lookup layout 'line-thickness))
+         (thick (* thickness line-thickness))
+         (stil (interpret-markup layout props arg))
+         (x1 (car (ly:stencil-extent stil X)))
+         (x2 (cdr (ly:stencil-extent stil X)))
+         (y-ext (ly:stencil-extent stil Y))
+         (y (+ (* line-thickness offset direction)
+               ;; we put out zero for positive text-direction, to make it
+               ;; consistent with `underline-markup'
+               ;; TODO: this will be problematic for args like "Eng"
+               ;;       fix it here _and_ in `underline-markup'
+               (if (negative? direction) 0 (cdr y-ext))))
+         (tie
+           (make-tie-stencil
+             (cons (+ x1 (car shorten-pair) line-thickness) y)
+             (cons (- x2 (cdr shorten-pair) line-thickness) y)
+             thick
+             direction)))
+    (ly:stencil-add stil tie)))
+
+(define-markup-command (undertie layout props arg)
+  (markup?)
+  #:category font
+  #:properties (tie-markup)
+  "
+@cindex undertie-ing text
+
+@lilypond[verbatim,quote]
+\\markup \\line {
+  \\undertie \"undertied\"
+  \\override #'(offset . 5)
+  \\override #'(thickness . 1)
+  \\undertie \"undertied\"
+  \\override #'(offset . 1)
+  \\override #'(thickness . 5)
+  \\undertie \"undertied\"
+}
+@end lilypond"
+  (interpret-markup layout (prepend-alist-chain 'direction DOWN props)
+    (make-tie-markup arg)))
+
+(define-markup-command (overtie layout props arg)
+  (markup?)
+  #:category font
+  #:properties (tie-markup)
+  "
+@cindex overtie-ing text
+
+Overtie @var{arg}.
+
+@lilypond[verbatim,quote]
+\\markup \\line {
+  \\overtie \"overtied\"
+  \\override #'(offset . 5)
+  \\override #'(thickness . 1)
+  \\overtie \"overtied\"
+  \\override #'(offset . 1)
+  \\override #'(thickness . 5)
+  \\overtie \"overtied\"
+}
+@end lilypond"
+  (interpret-markup layout (prepend-alist-chain 'direction UP props)
+    (make-tie-markup arg)))
+
 (define-markup-command (box layout props arg)
   (markup?)
   #:category font
@@ -729,8 +899,9 @@ Rotate object with @var{ang} degrees around its center.
 
 Provide a white background for @var{arg}.  The shape of the white
 background is determined by @code{style}.  The default
-is @code{box} which produces a white rectangle.  @code{outline}
-approximates the outline of the markup.
+is @code{box} which produces a rectangle.  @code{rounded-box}
+produces a rounded rectangle.  @code{outline} approximates the
+outline of the markup.
 
 @lilypond[verbatim,quote]
 \\markup {
@@ -739,6 +910,13 @@ approximates the outline of the markup.
     \\override #'(thickness . 1.5)
     \\whiteout whiteout-box
 }
+\\markup {
+  \\combine
+    \\filled-box #'(-1 . 24) #'(-3 . 4) #1
+    \\override #'(style . rounded-box)
+    \\override #'(thickness . 3)
+    \\whiteout whiteout-rounded-box
+}
 \\markup {
   \\combine
     \\filled-box #'(-1 . 18) #'(-3 . 4) #1
@@ -1417,16 +1595,11 @@ equivalent to @code{\"fi\"}.
                         (cons arg result-list))))
                 '()
                 arg-list))
-
-  (interpret-markup layout
-                    (prepend-alist-chain 'word-space 0 props)
-                    (make-line-markup
-                     (make-override-lines-markup-list
-                      (cons 'word-space
-                            (chain-assoc-get 'word-space props))
-                      (if (markup-command-list? args)
-                          args
-                          (concat-string-args args))))))
+  (stack-stencil-line 0
+                      (interpret-markup-list layout props
+                                             (if (markup-command-list? args)
+                                                 args
+                                                 (concat-string-args args)))))
 
 (define (wordwrap-stencils stencils
                            justify base-space line-width text-dir)
@@ -2073,6 +2246,24 @@ Set the dimensions of @var{arg} to @var{x} and@tie{}@var{y}."
       `(delay-stencil-evaluation ,(delay expr))
       x y))))
 
+(define-markup-command (with-outline layout props outline arg)
+  (markup? markup?)
+  #:category other
+  "
+Print @var{arg} with the outline and dimensions of @var{outline}."
+  (ly:stencil-outline (interpret-markup layout props arg)
+                      (interpret-markup layout props outline)))
+
+(define-markup-command (with-dimensions-from layout props arg1 arg2)
+  (markup? markup?)
+  #:category other
+  "
+Print @var{arg2} with the dimensions of @var{arg1}."
+  (let* ((stil1 (interpret-markup layout props arg1))
+         (x (ly:stencil-extent stil1 0))
+         (y (ly:stencil-extent stil1 1)))
+    (interpret-markup layout props (markup #:with-dimensions x y arg2))))
+
 (define-markup-command (pad-around layout props amount arg)
   (number? markup?)
   #:category align
@@ -2145,10 +2336,7 @@ Add padding @var{amount} around @var{arg} in the X@tie{}direction.
   }
 }
 @end lilypond"
-  (let* ((m (interpret-markup layout props arg))
-         (x (ly:stencil-extent m X))
-         (y (ly:stencil-extent m Y)))
-    (ly:make-stencil (list 'transparent-stencil (ly:stencil-expr m)) x y)))
+  (ly:stencil-outline empty-stencil (interpret-markup layout props arg)))
 
 (define-markup-command (pad-to-box layout props x-ext y-ext arg)
   (number-pair? number-pair? markup?)
@@ -2449,6 +2637,7 @@ may be any property supported by @rinternals{font-interface},
 
 (define-markup-command (abs-fontsize layout props size arg)
   (number? markup?)
+  #:properties ((word-space 0.6) (baseline-skip 3))
   #:category font
   "Use @var{size} as the absolute font size (in points) to display @var{arg}.
 Adjusts @code{baseline-skip} and @code{word-space} accordingly.
@@ -2464,14 +2653,12 @@ Adjusts @code{baseline-skip} and @code{word-space} accordingly.
 @end lilypond"
   (let* ((ref-size (ly:output-def-lookup layout 'text-font-size 12))
          (text-props (list (ly:output-def-lookup layout 'text-font-defaults)))
-         (ref-word-space (chain-assoc-get 'word-space text-props 0.6))
-         (ref-baseline (chain-assoc-get 'baseline-skip text-props 3))
          (magnification (/ size ref-size)))
     (interpret-markup
      layout
      (cons
-      `((baseline-skip . ,(* magnification ref-baseline))
-        (word-space . ,(* magnification ref-word-space))
+      `((baseline-skip . ,(* magnification baseline-skip))
+        (word-space . ,(* magnification word-space))
         (font-size . ,(magnification->font-size magnification)))
       props)
      arg)))
@@ -2914,7 +3101,7 @@ normal text font, no matter what font was used earlier.
   #:category music
   "@var{glyph-name} is converted to a musical symbol; for example,
 @code{\\musicglyph #\"accidentals.natural\"} selects the natural sign from
-the music font.  See @ruser{The Feta font} for a complete listing of
+the music font.  See @ruser{The Emmentaler font} for a complete listing of
 the possible glyphs.
 
 @lilypond[verbatim,quote]
@@ -3446,9 +3633,12 @@ A feta brace in point size @var{size}, rotated 180 degrees.
 
 Construct a note symbol, with stem and flag.  By using fractional values for
 @var{dir}, longer or shorter stems can be obtained.
-Supports all note-head-styles.
+Supports all note-head-styles.  Ancient note-head-styles will get
+mensural-style-flags.  @code{flag-style} may be overridden independently.
 Supported flag-styles are @code{default}, @code{old-straight-flag},
-@code{modern-straight-flag} and @code{flat-flag}.
+@code{modern-straight-flag}, @code{flat-flag}, @code{mensural} and
+@code{neomensural}.  The latter two flag-styles will both result in
+mensural-flags.  Both are supplied for convenience.
 
 @lilypond[verbatim,quote]
 \\markup {
@@ -3459,7 +3649,8 @@ Supported flag-styles are @code{default}, @code{old-straight-flag},
 @end lilypond"
   (define (get-glyph-name-candidates dir log style)
     (map (lambda (dir-name)
-           (format #f "noteheads.~a~a" dir-name
+           (format #f "noteheads.~a~a"
+                   dir-name
                    (if (and (symbol? style)
                             (not (equal? 'default style)))
                        (select-head-glyph style (min log 2))
@@ -3509,17 +3700,18 @@ Supported flag-styles are @code{default}, @code{old-straight-flag},
            (raw-length (if stem-up upflag-length downflag-length))
            (angle (if stem-up upflag-angle downflag-angle))
            (flag-length (+ (* raw-length factor) half-stem-thickness))
-           (flag-end (if (= angle 0)
-                         (cons flag-length (* half-stem-thickness dir))
-                         (polar->rectangular flag-length angle)))
+           (flag-end (polar->rectangular flag-length angle))
            (thickness (* flag-thickness factor))
            (thickness-offset (cons 0 (* -1 thickness dir)))
            (spacing (* -1 flag-spacing factor dir))
            (start (cons (- half-stem-thickness) (* half-stem-thickness dir)))
-           (points (list start
-                         flag-end
-                         (offset-add flag-end thickness-offset)
-                         (offset-add start thickness-offset)))
+           (raw-points
+             (list
+               '(0 . 0)
+               flag-end
+               (offset-add flag-end thickness-offset)
+               thickness-offset))
+           (points (map (lambda (coord) (offset-add coord start)) raw-points))
            (stencil (ly:round-filled-polygon points half-stem-thickness))
            ;; Log for 1/8 is 3, so we need to subtract 3
            (flag-stencil (buildflags stencil (- log 3) stencil spacing)))
@@ -3528,6 +3720,10 @@ Supported flag-styles are @code{default}, @code{old-straight-flag},
   (let* ((font (ly:paper-get-font layout (cons '((font-encoding . fetaMusic)
                                                  (font-name . #f))
                                                props)))
+         ;; default for text-font-size is 11
+         ;; hence we use (/ text-font-size 11) later, to ensure proper scaling
+         ;; of stem-length and thickness
+         (text-font-size (ly:output-def-lookup layout 'text-font-size 11))
          (size-factor (magstep font-size))
          (blot (ly:output-def-lookup layout 'blot-diameter))
          (head-glyph-name
@@ -3545,12 +3741,15 @@ Supported flag-styles are @code{default}, @code{old-straight-flag},
                                  (sign dir) log 'default))
                 result)))
          (head-glyph (ly:font-get-glyph font head-glyph-name))
-         (ancient-flags? (or (eq? style 'mensural) (eq? style 'neomensural)))
+         (ancient-flags?
+           (member style
+                   '(mensural neomensural petrucci semipetrucci blackpetrucci)))
          (attach-indices (ly:note-head::stem-attachment font head-glyph-name))
          (stem-length (* size-factor (max 3 (- log 1))))
          ;; With ancient-flags we want a tighter stem
-         (stem-thickness (* size-factor (if ancient-flags? 0.1 0.13)))
-         (stemy (* dir stem-length))
+         (stem-thickness
+           (* size-factor (/ text-font-size 11) (if ancient-flags? 0.1 0.13)))
+         (stemy (* dir (/ text-font-size 11) stem-length))
          (attach-off (cons (interval-index
                             (ly:stencil-extent head-glyph X)
                             (* (sign dir) (car attach-indices)))
@@ -3561,7 +3760,10 @@ Supported flag-styles are @code{default}, @code{old-straight-flag},
                                (cdr attach-indices)))))
          ;; For a tighter stem (with ancient-flags) the stem-width has to be
          ;; adjusted.
-         (stem-X-corr (if ancient-flags? (* 0.5 dir stem-thickness) 0))
+         (stem-X-corr
+           (if (or ancient-flags?
+                   (member flag-style '(mensural neomensural)))
+                   (* 0.5 dir stem-thickness) 0))
          (stem-glyph (and (> log 0)
                           (ly:round-filled-box
                            (ordered-cons (+ stem-X-corr (car attach-off))
@@ -3599,11 +3801,15 @@ Supported flag-styles are @code{default}, @code{old-straight-flag},
                               flat-flag)
                              (else
                               (ly:font-get-glyph font
-                                                 (format #f (if ancient-flags?
-                                                                "flags.mensural~a2~a"
-                                                                "flags.~a~a")
-                                                         (if (> dir 0) "u" "d")
-                                                         log))))
+                                (format #f
+                                        (if (or (member flag-style
+                                                        '(mensural neomensural))
+                                                (and ancient-flags?
+                                                     (null? flag-style)))
+                                            "flags.mensural~a2~a"
+                                            "flags.~a~a")
+                                        (if (> dir 0) "u" "d")
+                                        log))))
                        (cons (+ (car attach-off)
                                 ;; For tighter stems (with ancient-flags) the
                                 ;; flag has to be adjusted different.
@@ -3611,7 +3817,6 @@ Supported flag-styles are @code{default}, @code{old-straight-flag},
                                     stem-thickness
                                     0))
                              (+ stemy flag-style-Y-corr))))))
-
     ;; If there is a flag on an upstem and the stem is short, move the dots
     ;; to avoid the flag.  16th notes get a special case because their flags
     ;; hang lower than any other flags.
@@ -4246,6 +4451,7 @@ Draw vertical brackets around @var{arg}.
                 (padding)
                 (size 1)
                 (thickness 1)
+                (line-thickness 0.1)
                 (width 0.25))
   "
 @cindex placing parentheses around text
@@ -4276,12 +4482,11 @@ a column containing several lines of text.
   (let* ((m (interpret-markup layout props arg))
          (scaled-width (* size width))
          (scaled-thickness
-          (* (chain-assoc-get 'line-thickness props 0.1)
-             thickness))
+          (* line-thickness thickness))
          (half-thickness
           (min (* size 0.5 scaled-thickness)
                (* (/ 4 3.0) scaled-width)))
-         (padding (chain-assoc-get 'padding props half-thickness)))
+         (padding (or padding half-thickness)))
     (parenthesize-stencil
      m half-thickness scaled-width angularity padding)))
 
@@ -4522,6 +4727,152 @@ where @var{X} is the number of staff spaces."
   "Like @code{\\override}, for markup lists."
   (interpret-markup-list layout (cons (list new-prop) props) args))
 
+(define-markup-list-command (table layout props column-align lst)
+  (number-list? markup-list?)
+  #:properties ((padding 0)
+                (baseline-skip))
+  "@cindex creating a table.
+
+Returns a table.
+
+@var{column-align} specifies how each column is aligned, possible values are
+-1, 0, 1.  The number of elements in @var{column-align} determines how many
+columns will be printed.
+The entries to print are given by @var{lst}, a markup-list.  If needed, the last
+row is filled up with @code{point-stencil}s.
+Overriding @code{padding} may be used to increase columns horizontal distance.
+Overriding @code{baseline-skip} to increase rows vertical distance.
+@lilypond[verbatim,quote]
+\\markuplist {
+  \\override #'(padding . 2)
+  \\table
+    #'(0 1 0 -1)
+    {
+      \\underline { center-aligned right-aligned center-aligned left-aligned }
+      one \\number 1 thousandth \\number 0.001
+      eleven \\number 11 hundredth \\number 0.01
+      twenty \\number 20 tenth \\number 0.1
+      thousand \\number 1000 one \\number 1.0
+    }
+}
+@end lilypond
+"
+
+  (define (split-lst initial-lst lngth result-lst)
+    ;; split a list into a list of sublists of length lngth
+    ;; eg. (split-lst '(1 2 3 4 5 6) 2 '())
+    ;; -> ((1 2) (3 4) (5 6))
+    (cond ((not (integer? (/ (length initial-lst) lngth)))
+           (ly:warning
+            "Can't split list of length ~a into ~a parts, returning empty list"
+            (length initial-lst) lngth)
+           '())
+          ((null? initial-lst)
+            (reverse result-lst))
+          (else
+            (split-lst
+              (drop initial-lst lngth)
+              lngth
+              (cons (take initial-lst lngth) result-lst)))))
+
+  (define (dists-list init padding lst)
+    ;; Returns a list, where each element of `lst' is
+    ;; added to the sum of the previous elements of `lst' plus padding.
+    ;; `init' will be the first element of the resulting list. The addition
+    ;; starts with the values of `init', `padding' and `(car lst)'.
+    ;; eg. (dists-list 0.01 0.1 '(1 2 3 4)))
+    ;; -> (0.01 1.11 3.21 6.31 10.41)
+    (if (or (not (number? init))
+            (not (number? padding))
+            (not (number-list? lst)))
+        (begin
+          (ly:warning
+            "not fitting argument for `dists-list', return empty lst ")
+          '())
+        (reverse
+          (fold (lambda (elem rl) (cons (+ elem padding (car rl)) rl))
+                (list init)
+                lst))))
+
+  (let* (;; get the number of columns
+         (columns (length column-align))
+         (init-stils (interpret-markup-list layout props lst))
+         ;; If the given markup-list is the result of a markup-list call, their
+         ;; length may not be easily predictable, thus we add point-stencils
+         ;; to fill last row of the table.
+         (rem (remainder (length init-stils) columns))
+         (filled-stils
+           (if (zero? rem)
+               init-stils
+               (append init-stils (make-list (- columns rem) point-stencil))))
+         ;; get the stencils in sublists of length `columns'
+         (stils
+           (split-lst filled-stils columns '()))
+         ;; procedure to return stencil-length
+         ;; If it is nan, return 0
+         (lengths-proc
+           (lambda (m)
+             (let ((lngth (interval-length (ly:stencil-extent m X))))
+               (if (nan? lngth) 0 lngth))))
+         ;; get the max width of each column in a list
+         (columns-max-x-lengths
+           (map
+             (lambda (x)
+               (apply max 0
+                      (map
+                        lengths-proc
+                        (map (lambda (l) (list-ref l x)) stils))))
+             (iota columns)))
+         ;; create a list of (basic) distances, which each column should
+         ;; moved, using `dists-list'. Some padding may be added.
+         (dist-sequence
+           (dists-list 0 padding columns-max-x-lengths))
+         ;; Get all stencils of a row, moved accurately to build columns.
+         ;; If the items of a column are aligned other than left, we need to
+         ;; move them to avoid collisions:
+         ;; center aligned: move all items half the width of the widest item
+         ;; right aligned: move all items the full width of the widest item.
+         ;; Added to the default-offset calculated in `dist-sequence'.
+         ;; `stencils-for-row-proc' needs four arguments:
+         ;;    stil    - a stencil
+         ;;    dist    - a numerical value as basic offset in X direction
+         ;;    column  - a numerical value for the column we're in
+         ;;    x-align - a numerical value how current column should be
+         ;;              aligned, where (-1, 0, 1) means (LEFT, CENTER, RIGHT)
+         (stencils-for-row-proc
+           (lambda (stil dist column x-align)
+             (ly:stencil-translate-axis
+               (ly:stencil-aligned-to stil X x-align)
+               (cond ((member x-align '(0 1))
+                      (let* (;; get the stuff for relevant column
+                             (stuff-for-column
+                               (map
+                                 (lambda (s) (list-ref s column))
+                                 stils))
+                             ;; get length of every column-item
+                             (lengths-for-column
+                               (map lengths-proc stuff-for-column))
+                             (widest
+                               (apply max 0 lengths-for-column)))
+                        (+ dist (/ widest (if (= x-align 0) 2 1)))))
+                     (else dist))
+               X)))
+         ;; get a list of rows using `ly:stencil-add' on a list of stencils
+         (rows
+           (map
+             (lambda (stil-list)
+               (apply ly:stencil-add
+                 (map
+                   ;; the procedure creating the stencils:
+                   stencils-for-row-proc
+                   ;; the procedure's args:
+                   stil-list
+                   dist-sequence
+                   (iota columns)
+                   column-align)))
+             stils)))
+   (space-lines baseline-skip rows)))
+
 (define-markup-list-command (map-markup-commands layout props compose args)
   (procedure? markup-list?)
   "This applies the function @var{compose} to every markup in