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Re: writing custom engravers in scheme - defining context properties?
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From: |
Thomas Morley |
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Subject: |
Re: writing custom engravers in scheme - defining context properties? |
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Date: |
Mon, 10 Oct 2016 20:51:30 +0200 |
Hi Max,
2016-10-10 19:25 GMT+02:00 Paul <address@hidden>:
> Welcome to LilyPond! More below...
>
+1 :)
> On 10/10/2016 12:00 PM, Maxwell Phillips wrote:
>>
>> I'm experimenting with writing custom scheme engravers, for example to
>> deal with groups of staffs with complex rules about when each staff should
>> be visible or hidden.
>>
>> I can't figure out how to define the properties that engravers pass on to
>> the contexts they "consist" (sorry if not using the right terminology).
If you really want to define a new context property you may follow
Paul or one of the link at the end.
But maybe it's enough to make the engraver take an argument?
For an example, see:
http://lsr.di.unimi.it/LSR/Item?id=838
>> For example, I want to define an engraver with property my-prop such that
>> \new Staff \with { \consists My_engraver }
>> allows me to \set Staff.my-prop to change the behavior of My_engraver.
>
>
> Looks like you got a long way before asking on the list, kudos! What you're
> trying to do is not documented or in the LSR as far as I know.
Well, there are several examples in LSR, defining
grob-/music-/context-properties.
http://lsr.di.unimi.it/LSR/Search?q=set+object+property
The first seven hits.
Cheers,
Harm