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\version "2.24.0"

\header {
  categories = "Expressive marks, Tweaks and overrides"

  texidoc = "
Some dynamic expressions involve additional text, like @qq{sempre
@strong{pp}}. Since dynamics are usually centered under the note, the
\\pp would be displayed way after the note it applies to.

To correctly align the @qq{sempre @strong{pp}} horizontally so that it is
aligned as if it were only the \\pp, there are several approaches:

@itemize
@item
Simply use @code{\\once \\override DynamicText.X-offset = #-9.2} before
the note with the dynamics to manually shift it to the correct
position. Drawback: This has to be done manually each time you use that
dynamic markup...
@item
Add some padding (@code{#:hspace 7.1}) into the definition of your
custom dynamic mark so that after LilyPond center-aligns it, it is
already correctly aligned. Drawback: The padding really takes up that
space and does not allow any other markup or dynamics to be shown in
that position.
@item
Shift the dynamic script @code{\\once \\override ... .X-offset = ...}.
Drawback: @code{\\once \\override} is needed for every invocation!
@item
Set the dimensions of the additional text to@tie{}0 (using
@code{#:with-dimensions '(0@tie{}.@tie{}0) '(0@tie{}.@tie{}0)}).
Drawback: For LilyPond, @qq{sempre} has no extent now. This means it might
put other stuff there, causing collisions (which are not detected by
LilyPond's collision detection algorithm!). There also seems to be some
spacing, so it is not exactly the same alignment as without the
additional text.
@item
Add an explicit shift directly inside the scheme function for the
dynamic script.
@item
Set an explicit alignment inside the dynamic script. By default, this
won't have any effect, only if one sets @code{X-offset}! Drawback: One
needs to set @code{DynamicText.X-offset}, which will apply to all
dynamic texts! Also, it is aligned at the right edge of the additional
text, not at the center of \\pp.
@end itemize
"

  doctitle = "Horizontally aligning custom dynamics like @qq{più f}"
} % begin verbatim


\paper {
  ragged-right = ##f
  indent = 5\cm
}

% Solution 1: Using a simple markup with a particular halign value
% Drawback: It's a markup, not a dynamic command, so \dynamicDown
%           etc. will have no effect
semppMarkup = \markup { \halign #1.4 \italic "sempre" \dynamic "pp" }

% Solution 2: Using a dynamic script & shifting with
%             \once \override ...X-offset = ..
% Drawback: \once \override needed for every invocation
semppK =
#(make-dynamic-script
  (markup #:line
          (#:normal-text
           #:italic "sempre"
           #:dynamic "pp")))

% Solution 3: Padding the dynamic script so the center-alignment
%             puts it at the correct position
% Drawback: the padding really reserves the space, nothing else can be there
semppT =
#(make-dynamic-script
  (markup #:line
          (#:normal-text
           #:italic "sempre"
           #:dynamic "pp"
           #:hspace 7.1)))

% Solution 4: Dynamic, setting the dimensions of the additional text to 0
% Drawback: To lilypond "sempre" has no extent, so it might put
%           other stuff there => collisions
% Drawback: Also, there seems to be some spacing, so it's not exactly the
%           same alignment as without the additional text
semppM =
#(make-dynamic-script
  (markup #:line
          (#:with-dimensions '(0 . 0) '(0 . 0)
                             #:right-align
                             #:normal-text
                             #:italic "sempre"
                             #:dynamic "pp")))

% Solution 5: Dynamic with explicit shifting inside the scheme function
semppG =
#(make-dynamic-script
  (markup #:hspace 0
          #:translate '(-18.85 . 0)
          #:line (#:normal-text
                  #:italic "sempre"
                  #:dynamic "pp")))

% Solution 6: Dynamic with explicit alignment. This has only effect
%             if one sets X-offset!
% Drawback: One needs to set DynamicText.X-offset!
% Drawback: Aligned at the right edge of the additional text,
%           not at the center of pp
semppMII =
#(make-dynamic-script
  (markup #:line (#:right-align
                  #:normal-text
                  #:italic "sempre"
                  #:dynamic "pp")))

\new StaffGroup <<
  \new Staff \with { instrumentName = "standard" }
    \relative c'' {
      \key es \major
      c4\pp c\p c c | c\ff c c\pp c
    }
  \new Staff \with {instrumentName = "normal markup" }
    \relative c'' {
      \key es \major
      c4-\semppMarkup c\p c c | c\ff c c-\semppMarkup c
    }
  \new Staff \with { instrumentName = "explicit shifting" }
    \relative c'' {
      \key es \major
      \once \override DynamicText.X-offset = #-9.2
      c4\semppK c\p c c
      c4\ff c
      \once \override DynamicText.X-offset = #-9.2
      c4\semppK c
    }
  \new Staff \with { instrumentName = "right padding" }
    \relative c'' {
      \key es \major
      c4\semppT c\p c c | c\ff c c\semppT c
    }
  \new Staff \with { instrumentName = "set dimension to zero" }
    \relative c'' {
      \key es \major
      c4\semppM c\p c c | c\ff c c\semppM c
    }
  \new Staff \with { instrumentName = "shift inside dynamics" }
    \relative c'' {
      \key es \major
      c4\semppG c\p c c | c\ff c c\semppG c
    }
  \new Staff \with { instrumentName = "alignment inside dynamics" }
    \relative c'' {
      \key es \major
      \override DynamicText.X-offset = #-1
      c4\semppMII c\p c c | c\ff c c\semppMII c
    }
>>

\layout { \override Staff.InstrumentName.self-alignment-X = #LEFT }
