The staff switches often do not end up in optimal places. For high
quality output, staff switches should be specified manually.
-
@node Manual staff switches
@subsection Manual staff switches
@code{"down"}.
+
@node Pedals
@subsection Pedals
@cindex Pedals
@end example
@end itemize
- The object description is an Scheme association
-list. Since a Scheme list is a singly linked list, we can treat it as
-a stack, and @code{\override} and @code{\revert} are push and pop
-operations. The association list is stored in a normal context
-property, hence
+The object description is an Scheme association list. Since a Scheme
+list is a singly linked list, we can treat it as a stack, and
+@code{\override} and @code{\revert} are push and pop operations. The
+association list is stored in a normal context property, hence
@example
\property Voice.NoteHead = #'()
@end example
crashes. Reverting properties that are system defaults may also lead
to crashes.
+A property tweak of modifies a local copy of the object definition.
+After such a tweak, the definition is independent of the objects in
+enclosing contexts. For example
+
+@lilypond
+ \property Voice.Stem \set #'neutral-direction = #1
+ b'8
+ \property Staff.Stem \set #'thickness = #4.0
+ b'16
+ \new Voice { b'32 }
+@end lilypond
+
+In this fragment, @code{neutral-direction} is tweaked. As a result,
+the current @internalsref{Voice} gets a private version of the
+@internalsref{Stem} object. The following tweak modifies the
+definition at @internalsref{Staff} level. Since it a different
+definition, the thickness of the @code{b'16} is unaffected. For the
+third note, a new Voice is created, which inherits the new definition,
+including the changed thickness, but excluding the new neutral
+direction.
+
+
@node Constructing a tweak
@subsection Constructing a tweak
The most common thing to change about the appearance of fonts is their
size. The font size of any context can be easily changed by setting
-the @code{fontSize} property for that context. Its value is an
-integer: negative numbers make the font smaller, positive numbers
-larger. An example is given below:
+the @code{fontSize} property for that context. Its value is a number:
+negative numbers make the font smaller, positive numbers larger. An
+example is given below:
@c
@lilypond[fragment,relative=1,verbatim,quote]
c4 c4 \property Voice.fontSize = #-1
f4 g4
@end lilypond
-This command will set @code{font-relative-size} (see below), and does
+This command will set @code{font-size} (see below), and does
not change the size of variable symbols, such as beams or slurs.
-
One of the uses of @code{fontSize} is to get smaller symbol for cue
notes. An elaborate example of those is in
@inputfileref{input/test,cue-notes.ly}.
@cindex magnification
-The size of the font may be scaled with the object property
-@code{font-magnification}. For example, @code{2.0} blows up all
-letters by a factor 2 in both directions.
@cindex cue notes
-@cindex font size
-@cindex size
-@cindex symbol size
-@cindex glyph size
The font used for printing a object can be selected by setting
@code{font-name}, e.g.
@noindent
Any font can be used, as long as it is available to @TeX{}. Possible
fonts include foreign fonts or fonts that do not belong to the
-Computer Modern font family.
+Computer Modern font family. The size of fonts selected in this way
+can be changed with the @code{font-magnification} property. For
+example, @code{2.0} blows up all letters by a factor 2 in both
+directions.
+
+@cindex font size
+@cindex font magnification
Font selection for the standard fonts, @TeX{}'s Computer Modern fonts,
can also be adjusted with a more fine-grained mechanism. By setting
all three mechanisms work for every object that supports
@code{font-interface}:
+
@table @code
@item font-family
is a symbol indicating the general class of the typeface. Supported are
font series for each font family and shape. Choices are @code{medium}
and @code{bold}.
-@item font-relative-size
- is a number indicating the size relative the standard size. For example,
- with 20pt staff height, relative size -1 corresponds to 16pt staff
- height, and relative size +1 corresponds to 23 pt staff height.
-
- There are small differences in design between fonts designed for
-different sizes, hence @code{font-relative-size} is preferred over
-@code{font-magnification} for changing font sizes.
-
-
-@item font-design-size
-is a number indicating the design size of the font.
-
-This is a feature of the Computer Modern Font: each point size has a
-slightly different design. Smaller design sizes are relatively wider,
-which enhances readability.
@end table
For any of these properties, the value @code{*} (i.e. the symbol
@cindex @code{font-style}
+The font size is set by modifying the @code{font-size} property. Its
+value is a number indicating the size relative to the standard size.
+Each step up is an increase of approximately 12% of the font size. Six
+steps is exactly a factor two.
+
+LilyPond has fonts in different design sizes: the music fonts for
+smaller sizes are chubbier, while the text fonts are relatively wider.
+Font size changes are achieved by scaling the design size that is
+closest to the desired size.
+
+The @code{font-size} mechanism does not work for fonts selected
+through @code{font-name}. These may be scaled with
+@code{font-magnification}.
+
@refcommands
The following commands set @code{fontSize} for the current voice.
projects / lilypond.git / blobdiff