mpdolce - LilyPond

Chapter 4: Tweaking output 112
\tempo 4=80
d1
�
�
� = 80
� = 120
�
�
Note in the second example how important it is to figure out what context handles a certain
object. Since the MetronomeMark object is handled in the Score context, property changes in
the Voice context will not be noticed. For more details, see Section “Modifying properties” in
Notation Reference.
If the padding property of an object is increased when that object is in a stack of objects
being positioned according to their outside-staff-priority, then that object and all objects
outside it are moved.
left-padding and right-padding
The right-padding property affects the spacing between the accidental and the note to which
it applies. It is not often required, but the following example shows one situation where it is
needed. Suppose we wish to show a chord containing both a B-natural and a B-flat. To avoid
ambiguity we would like to precede the notes with both a natural and a flat sign. Here are a
few attempts to do this:
� ���� �����
�����
None work, with the second two showing bad collisions between the two signs.
One way of achieving this is to override the accidental stencil with a markup containing the
natural and flat symbols in the order we would like, like this:
naturalplusflat = \markup { \natural \flat }
\relative c'' {
\once \override Accidental
#'stencil = #ly:text-interface::print
\once \override Accidental #'text = #naturalplusflat
\once \override Score.AccidentalPlacement #'right-padding = #1.5
}
� ��� ��
This necessarily uses an override for the accidental stencil which will not be covered until later.
The stencil type must be a procedure, here changed to print the contents of the text property
of Accidental, which itself is set to be a natural sign followed by a flat sign. These are then
moved further away from the note head by overriding right-padding.