2013/6/14 Thomas Morley <[email protected]> > > > 2013/6/14 Kieren MacMillan <[email protected]> > >> Hi Harm, >> >> it's not completely clear to me what you want to achieve. >> >> >> I want this: >> >> 1. Best Option = adjust the stencil of the bracket so that \sustainOff >> would print the entire grouping "/\_ sim." >> >> >> Please look at the output from the code below and tell what's good/wrong. >> >> >> The "sim." is in the wrong place, and there should be an up and down and >> small horizontal line right before it (as if the pedal bracket was >> continuing). Here's a (horrible) example: >> >> >> >> Thanks! >> Kieren. >> > > Hi Kieran, > > thanks for the image. I think I understand now, will try this evening. > > -Harm >
Hi Kieran,
please try the code below (same attached).
Note that the \pedalSim has to be inserted before the PianoPedalBracket
starts.
Behaviour at line-break is supported, though not widely tested.
Several comments in code.
\version "2.17.20"
\paper {
ragged-right = ##t
%% To watch the behaviour at line-break uncomment next line.
%line-width = 80
}
pedalSim =
\once \override Staff.PianoPedalBracket #'stencil =
#(lambda (grob)
(let* (;; have we been split?
(orig (ly:grob-original grob))
;; if yes, get the split pieces (our siblings)
(siblings (if (ly:grob? orig)
(ly:spanner-broken-into orig)
'())))
;; Modify the unbroken grob-stencil or the first part of the broken
;; grob-stencil.
(if (or (null? siblings)
(and (>= (length siblings) 2)
(eq? (car siblings) grob)))
(let* (;; Get the default-stencil and its x-dimension and x-length.
(stil (ly:piano-pedal-bracket::print grob))
(stil-x-extent (ly:stencil-extent stil X))
(stil-x-length (interval-length stil-x-extent))
;; Create a stencil to be added to the default-stencil.
;; Gets its x-dimension and x-length.
(sim-stil
(grob-interpret-markup grob
(markup #:fontsize -1 #:italic "sim.")))
(sim-stil-x-extent (ly:stencil-extent sim-stil X))
(sim-stil-x-length (interval-length sim-stil-x-extent))
(thickness (max (layout-line-thickness grob) 0.1))
;; The value to shorten the default-stencil from the right
side.
;; 0.8 will shorten about 80%.
;; Hard-coded, could be turned into a music-function.
(amount 0.8))
;; Print a warning if the length of the default-stencil would not
;; warrant a sufficient output.
(if (> sim-stil-x-length stil-x-length)
(ly:warning "PianoPedalBracket is too short"))
;; Shorten the default-stencil.
(ly:grob-set-property!
grob
'shorten-pair
(cons 0 (* amount stil-x-length)))
;; Calculate the final stencil.
(let* (;; Get the shortened (default-)stencil
;; and its y-dimension.
(shortened-stil (ly:piano-pedal-bracket::print grob))
(shortened-stil-y-ext (ly:stencil-extent shortened-stil Y))
;; Modify the sim-stil to gain a little gap to the left and
;; enlarge it downwards a little (otherwise the
stencil-whiteout
;; will not work sufficient.
(new-sim-stil
(ly:make-stencil
(ly:stencil-expr sim-stil)
(interval-widen sim-stil-x-extent (* 2 thickness))
(cons (- (car shortened-stil-y-ext) thickness)
(cdr shortened-stil-y-ext)))))
(ly:stencil-add
shortened-stil
(ly:stencil-translate-axis
(stencil-whiteout new-sim-stil)
(* (- 1 amount) (- stil-x-length sim-stil-x-length))
X))))
;; TODO:
;; Is there any need to return #f explicitly?
;; Deleting it seems to make no difference.
;#f
)))
\relative c' {
\set Staff.pedalSustainStyle = #'bracket
c4\sustainOn a e' f
\pedalSim
c\sustainOff\sustainOn a e' f'
c4\sustainOff a e' f
}
Please shout if something is wrong.
HTH,
Harm
<<Screen Shot 2013-06-13 at 20.59.33.png>>
pedal-sim-02.ly
Description: Binary data
<<attachment: pedal-sim-02.png>>
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