Re: Forcing a DynamicText to appear inside the staff

[Richard Shann]

On Thu, 2016-08-11 at 12:34 +0200, David Kastrup wrote:
> Richard Shann <address@hidden> writes:
> 
[...]
> extra-offset is a last-minute measure after all positioning and
> collision avoidance has already been done.  So whenever the positioned
> idea of \f is moved in order to avoid a collision due to new elements
> appearing, the extra-offsetted actual \f moves along.  extra-offset is a
> blind brute-force control.  It most reliably does what you ask of it,
> but it does not notice when the given task/offset stops making sense.
> 

Thank you very much for this. It took me a while to understand what you
were saying, but I then could construct the following illustration
(which others might find useful).

In the first two scores the f is positioned by the two methods, in the
second two the note it is attached to is moved, and only the first
method leaves the f in the desired position.

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\version "2.19.43"
{
  
   \override Staff.DynamicLineSpanner  #'outside-staff-priority = ##f
   \override Staff.DynamicText #'X-offset = 4
   \override Staff.DynamicLineSpanner #'Y-offset = 0
 
  c'
   \f d' e f
}

{
  c'
  -\tweak #'extra-offset #'(4 . 5)
   \f d' e f
}

{
  
   \override Staff.DynamicLineSpanner  #'outside-staff-priority = ##f
   \override Staff.DynamicText #'X-offset = 4
   \override Staff.DynamicLineSpanner #'Y-offset = 0
 
  c
   \f d' e f
}

{
  c
  -\tweak #'extra-offset #'(4 . 5)
   \f d' e f
}

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Richard