-;;;; harp-pedals.scm --
+;;;; This file is part of LilyPond, the GNU music typesetter.
;;;;
-;;;; source file of the GNU LilyPond music typesetter
+;;;; Copyright (C) 2008--2012 Reinhold Kainhofer <reinhold@kainhofer.com>
;;;;
-;;;; (c) 2008 Reinhold Kainhofer <reinhold@kainhofer.com>
+;;;; LilyPond is free software: you can redistribute it and/or modify
+;;;; it under the terms of the GNU General Public License as published by
+;;;; the Free Software Foundation, either version 3 of the License, or
+;;;; (at your option) any later version.
+;;;;
+;;;; LilyPond is distributed in the hope that it will be useful,
+;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;;;; GNU General Public License for more details.
+;;;;
+;;;; You should have received a copy of the GNU General Public License
+;;;; along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
-(define-builtin-markup-command (harp-pedal layout props definition-string) (string?)
- instrument-specific-markup ; markup type for the documentation!
- ((size 1.0)
- (harp-pedal-details)
- (thickness 0.5))
+(define-markup-command (harp-pedal layout props definition-string) (string?)
+ #:category instrument-specific-markup ; markup type for the documentation!
+ #:properties ((size 1.2)
+ (harp-pedal-details '())
+ (thickness 0.5))
"Make a harp pedal diagram.
Possible elements in @var{definition-string}:
@end table
The function also checks if the string has the typical form of three
-pedals, then the divider and then the remaining four pedals. If not it
-prints out a warning. However, in any case, it will also print each symbol
-in the order as given. This means you can place the divider (even multiple
+pedals, then the divider and then the remaining four pedals. If not it
+prints out a warning. However, in any case, it will also print each symbol
+in the order as given. This means you can place the divider (even multiple
dividers) anywhere you want, but you'll have to live with the warnings.
The appearance of the diagram can be tweaked inter alia using the size property
of the TextScript grob (@code{\\override Voice.TextScript #'size = #0.3}) for
the overall, the thickness property
(@code{\\override Voice.TextScript #'thickness = #3}) for the line thickness of
-the horizontal line and the divider. The remaining configuration (box sizes,
+the horizontal line and the divider. The remaining configuration (box sizes,
offsets and spaces) is done by the harp-pedal-details list of properties
(@code{\\override Voice.TextScript #'harp-pedal-details #'box-width = #1}).
It contains the following settings: @code{box-offset} (vertical shift of the
\\markup \\harp-pedal #\"^-v|--ov^\"
@end lilypond
"
- (make-harp-pedal layout props (harp-pedals-parse-string definition-string)))
-
-
-;; There is also a \harp-pedal-verbose version, which takes a list of -1/0/1
-;; directions, o and a possible |. It's commented out, because it has some
-;; issues (see below) and does not add any new functionality over \harp-pedal
-;; The caveats:
-;; 1) the | cannot be given as a string "|" but as a character #\| and
-;; the "o" has to be given as #\o.
-;; 2) if one wants to use directions like UP, CENTER or DOWN, one cannot use
-;; '(UP DOWN CENTER #\| ....), because the contents of that list are
-;; never evaluated to -1/0/1. Instead one has to explicitly create a
-;; list like (list UP DOWN CENTER #\| ....)
-;;
-;; (define-builtin-markup-command (harp-pedal-verbose layout props pedal-list) (list?)
-;; instrument-specific-markup ; markup type
-;; ((size 1.0)
-;; (harp-pedal-details)
-;; (thickness 0.5))
-;; "Make a harp pedal diagram containing the directions indicated in @var{pedal-list}."
-;; (make-harp-pedal layout props pedal-list))
-
+ (let* ((pedal-list (harp-pedals-parse-string definition-string))
+ (details (begin (harp-pedal-check pedal-list) harp-pedal-details))
+ (dy (* size (assoc-get 'box-offset details 0.8))) ; offset of the box center from the line
+ (line-width (* (ly:output-def-lookup layout 'line-thickness)
+ (chain-assoc-get 'thickness props 0.5)))
+ (box-width (* size (assoc-get 'box-width details 0.4)))
+ (box-hheight (* size (/ (assoc-get 'box-height details 1.0) 2))) ; half the box-height, saves some divisions by 2
+ (spacebeforedivider (* size (assoc-get 'space-before-divider details 0.8))) ; full space between boxes before the first divider
+ (spaceafterdivider (* size (assoc-get 'space-after-divider details 0.8))) ; full space between boxes
+ (circle-thickness (* (ly:output-def-lookup layout 'line-thickness)
+ (assoc-get 'circle-thickness details 0.5)))
+ (circle-x-padding (* size (assoc-get 'circle-x-padding details 0.15)))
+ (circle-y-padding (* size (assoc-get 'circle-y-padding details 0.2)))
+ (box-x-dimensions (lambda (prev-x p space) (cons (+ prev-x space)
+ (+ prev-x space box-width))))
+ (box-y-dimensions (lambda (prev-x p space) (cons (- (* p dy) box-hheight)
+ (+ (* p dy) box-hheight))))
+ (divider-stencil (lambda (xpos) (make-line-stencil line-width
+ xpos (- 0 dy box-hheight)
+ xpos (+ dy box-hheight))))
+ (result (let process-pedal ((remaining pedal-list)
+ (prev-x 0)
+ (stencils '())
+ (circled #f)
+ (space spacebeforedivider))
+ ; Terminal condition of the recursion, return (final-x . stencil-list)
+ (if (null? remaining)
+ (cons (+ prev-x space) (reverse stencils))
+ (case (car remaining)
+ ((1 0 -1) ; Pedal up/neutral/down
+ (let* ((p (car remaining))
+ (stencil (make-filled-box-stencil
+ (box-x-dimensions prev-x p space)
+ (box-y-dimensions prev-x p space)))
+ (pedal-stencil
+ (if circled
+ (oval-stencil stencil circle-thickness
+ circle-x-padding circle-y-padding)
+ stencil))
+ (new-prev-x (+ prev-x space box-width)))
+ (process-pedal (cdr remaining) new-prev-x
+ (cons pedal-stencil stencils) #f space)))
+ ((#\|) ; Divider line
+ (let* ((xpos (+ prev-x space))
+ (stencil (divider-stencil xpos))
+ (new-prev-x (+ prev-x space)))
+ (process-pedal (cdr remaining) new-prev-x
+ (cons stencil stencils)
+ circled spaceafterdivider)))
+ ((#\o) ; Next pedal should be circled
+ (process-pedal (cdr remaining) prev-x stencils #t space))
+ (else
+ (ly:warning "Unhandled entry in harp-pedal: ~a"
+ (car remaining))
+ (process-pedal (cdr remaining)
+ prev-x stencils circled space))))))
+ (final-x (car result))
+ (stencils (cdr result)))
+ ; Add the horizontal line and combine all stencils:
+ (box-stencil
+ (apply ly:stencil-add
+ (cons
+ (make-line-stencil line-width 0 0 final-x 0)
+ stencils))
+ 0.0
+ 0.0)))
;; Parse the harp pedal definition string into list of directions (-1/0/1), #\o and #\|
(define (harp-pedals-parse-string definition-string)
(if (null? (cdr info))
(ly:warning "Harp pedal diagram does not contain a divider (usually after third pedal).")
(if (not (equal? (cdr info) '(3)))
- (ly:warning "Harp pedal diagram contains dividers at positions ~a. Normally, there is only one divider after the third pedal." (cdr info))))))
-
-
-(define (make-harp-pedal layout props pedal-list)
- "Make a harp pedals diagram markup"
-
- (harp-pedal-check pedal-list)
-
- (let* ((size (chain-assoc-get 'size props 1.2))
- (details (chain-assoc-get 'harp-pedal-details props '()))
- (dy (* size (assoc-get 'box-offset details 0.8))) ; offset of the box center from the line
- (line-width (* (ly:output-def-lookup layout 'line-thickness)
- (chain-assoc-get 'thickness props 0.5)))
- (box-width (* size (assoc-get 'box-width details 0.4)))
- (box-hheight (* size (/ (assoc-get 'box-height details 1.0) 2))) ; half the box-height, saves some divisions by 2
- (spacebeforedivider (* size (assoc-get 'space-before-divider details 0.8))) ; full space between boxes before the first divider
- (spaceafterdivider (* size (assoc-get 'space-after-divider details 0.8))) ; full space between boxes
- ;(spacebeforedivider (/ (+ box-width (* 8 spaceafterdivider)) 8))
- (box-x-dimensions (lambda (prev-x p space) (cons (+ prev-x space)
- (+ prev-x space box-width))))
- (box-y-dimensions (lambda (prev-x p space) (cons (- (* p dy) box-hheight)
- (+ (* p dy) box-hheight))))
- (divider-stencil (lambda (xpos) (make-line-stencil line-width xpos (- 0 dy box-hheight) xpos (+ dy box-hheight))))
- (result (let process-pedal ((remaining pedal-list)
- (prev-x 0)
- (stencils '())
- (circled #f)
- (space spacebeforedivider))
- ; Terminal condition of the recursion, return (final-x . stencil-list)
- (if (null? remaining)
- (cons (+ prev-x space) (reverse stencils))
-
- (case (car remaining)
- ((1 0 -1) ; Pedal up/neutral/down
- (let* ((p (car remaining))
- (stencil (make-filled-box-stencil
- (box-x-dimensions prev-x p space)
- (box-y-dimensions prev-x p space)))
- ;(circle-stencil (if circled (rounded-box-stencil stencil 0.05 0.3 0.1 ) stencil))
- (circle-stencil (if circled (circle-stencil stencil 0.05 0.2 ) stencil))
- (new-prev-x (+ prev-x space box-width)))
- (process-pedal (cdr remaining) new-prev-x (cons circle-stencil stencils) #f space)))
- ((#\|) ; Divider line
- (let* ((xpos (+ prev-x space))
- (stencil (divider-stencil xpos))
- (new-prev-x (+ prev-x space)))
- (process-pedal (cdr remaining) new-prev-x (cons stencil stencils) circled spaceafterdivider)))
- ((#\o) ; Next pedal should be circled
- (process-pedal (cdr remaining) prev-x stencils #t space))
- (else
- (ly:warning "Unhandled entry in harp-pedal: ~a" (car remaining))
- (process-pedal (cdr remaining) prev-x stencils circled space))))))
- (final-x (car result))
- (stencils (cdr result)))
- ; Add the horizontal line and combine all stencils:
- (apply ly:stencil-add
- (cons
- (make-line-stencil line-width 0 0 final-x 0)
- stencils))))
-
+ (ly:warning "Harp pedal diagram contains dividers at positions ~a. Normally, there is only one divider after the third pedal." (cdr info))))))
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