Hi Stefano,
1) I need to store in the output-attributes the "direction" of the
TextScript (it says if the object is above or below the staff)
I can obtain this info with map-some-music() [ by looking
at (ly:music-property evt 'direction) ]. But in this way I need to set the
direction in the music expression.
\token f^\markup {'foobar'}
Instead, I want to obtain this info also when it's not set by the me in the
music expression, and it's calculated by Lilypond:
\token f\markup {'foobar'}
2) I need to obtain the absolute and relative coordinates calculated by
Lilypond for the same TextScript.
Point 1) is very important, because I don't have this info in the svg
output.
About the coordinates: I can calculate them by parsing the svg file, as I
did for beams and slurs. But it would be better if I obtain them
automatically by Lilypond and pass them to the SVG Javascript script.
Thanks again!
Best
P
On Mon, Dec 23, 2019 at 8:38 AM Stefano Troncaro <[email protected]>
wrote:
> Hi Paolo, I'm glad you found it useful! Could you give me an example of
> what you want to do with TextScripts? Besides giving them an id, what
> properties do you need stored in the svg output attributes?
>
> El dom., 22 dic. 2019 a las 14:04, Paolo Prete (<[email protected]>)
> escribió:
>
>> Thank you again Stefano. This helps again and you will see how good it
>> will fit in the library I'm coding.
>> However, I can't make it work for a TextScript (either before the
>> notevent or before the markup token). I tried also map-some-music(), but it
>> doesn't fix it.
>>
>> \version "2.19.83"
>>
>> token = #(let* ((ctr 0)
>> (ctr! (lambda ()
>> (set! ctr (1+ ctr))
>> ctr)))
>> (define-music-function (mus) (ly:music?)
>> (let* ((id (format #f "foobar_~a" (ctr!)))
>> (type (ly:music-property mus 'name))
>> (mexp (case type
>> ((BeamEvent NoteEvent TextScriptEvent )
>> #{ \tweak TextScript.after-line-breaking #(lambda
>> (grob)
>> (let* ((outprop (ly:grob-property grob
>> 'direction))
>> (prop (ly:grob-property grob
>> 'direction))
>> (outprop (append outprop
>> `((beam-thickness . ,prop)))))
>> (display (format #f "\n****\n~a\n****\n"
>> prop))
>> (ly:grob-set-property! grob
>> 'output-attributes outprop)))
>> \tweak TextScript.output-attributes.id #id #mus
>> #} )
>> (else #{ \tweak output-attributes.id #id #mus #} ))))
>> mexp)))
>>
>> \relative { c'4 d8-\token [ e ] \token f^\markup {'iii'} g c,4 }
>>
>> On Sun, Dec 22, 2019 at 4:21 PM Stefano Troncaro <
>> [email protected]> wrote:
>>
>>> Hi Paolo,
>>>
>>> The main problem here is that \tweak can only modify the object that is
>>> next to it, so you can tweak a NoteHead to modify an automatic beam, but to
>>> modify a beam that is created manually because of a [ in the input you need
>>> to place the tweak before the [. See:
>>>
>>> %%%%%%%%%%%%%%%%%
>>> \version "2.19.83"
>>>
>>> \relative {
>>> c'8[ \tweak Beam.color #red d] %doesn't work
>>> \tweak Beam.color #red e f %works
>>> \tweak Beam.color #red g[ a] %doesn't work
>>> b -\tweak Beam.color #red [ c ] %works
>>> }
>>> %%%%%%%%%%%%%%%%%
>>>
>>> That said, I modified the function you sent so that it also considerds
>>> NoteEvents and modifies the automatically created beams with the desired
>>> properties:
>>>
>>> %%%%%%%%%%%%%%%%%
>>> \version "2.19.83"
>>>
>>> token = #(let* ((ctr 0)
>>> (ctr! (lambda ()
>>> (set! ctr (1+ ctr))
>>> ctr)))
>>> (define-music-function (mus) (ly:music?)
>>> (let* ((id (format #f "foobar_~a" (ctr!)))
>>> (type (ly:music-property mus 'name))
>>> (mexp (case type
>>> ((BeamEvent NoteEvent)
>>> #{ \tweak Beam.after-line-breaking #(lambda (grob)
>>> (let* ((outprop (ly:grob-property grob
>>> 'output-attributes))
>>> (beam-thickness (ly:grob-property grob
>>> 'beam-thickness))
>>> (outprop (append outprop
>>> `((beam-thickness . ,beam-thickness)))))
>>> ;(display (format #f "\n****\n~a\n****\n"
>>> beam-thickness))
>>> (ly:grob-set-property! grob
>>> 'output-attributes outprop)))
>>> \tweak Beam.output-attributes.id #id #mus #} )
>>> (else #{ \tweak output-attributes.id #id #mus #}
>>> ))))
>>> mexp)))
>>>
>>> \relative { c'4 d8-\token [ e ] \token f g c,4 }
>>> %%%%%%%%%%%%%%%%%
>>>
>>> The code could be cleaner I think, I'll try to improve it if I get some
>>> free time. Meanwhile I hope this helps
>>>
>>> El dom., 22 dic. 2019 a las 7:58, Paolo Prete (<[email protected]>)
>>> escribió:
>>>
>>>> Hello all.
>>>>
>>>> the following function (thanks to Stefano!) inserts the beam-thickness
>>>> property of a Beam in the list of output-attributes of the corresponding
>>>> SVG item. It does its job if I place the function soon before a beam symbol
>>>> "[". But it doesn't work (no errors, but the output-attributes property is
>>>> not set) if place it before a notename. How can I fix that? Should I
>>>> map-some-music() and iterate until I find the BeamEvent? I tried that too,
>>>> but without success.
>>>> Thanks.
>>>>
>>>> token = #(let* ((ctr 0)
>>>> (ctr! (lambda ()
>>>> (set! ctr (1+ ctr))
>>>> ctr)))
>>>> (define-music-function (mus) (ly:music?)
>>>> (let* ((id (format #f "foobar_~a" (ctr!)))
>>>> (mexp #{ \tweak output-attributes.id #id #mus #} )
>>>> (type (ly:music-property mus 'name))
>>>> (mexp (case type
>>>> ('BeamEvent
>>>> #{ \tweak Beam.after-line-breaking #(lambda (grob)
>>>> (let* ((outprop (ly:grob-property grob
>>>> 'output-attributes))
>>>> (beam-thickness (ly:grob-property
>>>> grob 'beam-thickness))
>>>> (outprop (append outprop
>>>> `((beam-thickness . ,beam-thickness)))))
>>>> (begin
>>>> (ly:grob-set-property! grob
>>>> 'output-attributes outprop)
>>>> (display "\n****\n")
>>>> (display beam-thickness)
>>>> (display "\n****\n"))))
>>>> #mexp #} )
>>>> (else mexp))))
>>>> mexp)))
>>>>
>>>> \relative { c'4 d8-\token [ e ] \token f[ g ] c,4 }
>>>>
>>>
