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<a name="DrumStaff"></a>
Next: <a rel="next" accesskey="n" href="DrumVoice.es.html#DrumVoice">DrumVoice</a>,
Previous: <a rel="previous" accesskey="p" href="Devnull.es.html#Devnull">Devnull</a>,
Up: <a rel="up" accesskey="u" href="Contexts.es.html#Contexts">Contexts</a>
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<h4 class="unnumberedsubsec">DrumStaff</h4>
<p>Handles typesetting for percussion.
<p>This context also accepts commands for the following context(s):
<p>Staff.
<p>This context creates the following layout object(s):
<p><a href="BarLine.es.html#BarLine">BarLine</a>, <a href="BassFigureAlignmentPositioning.es.html#BassFigureAlignmentPositioning">BassFigureAlignmentPositioning</a>, <a href="BassFigureAlignment.es.html#BassFigureAlignment">BassFigureAlignment</a>, <a href="BassFigureBracket.es.html#BassFigureBracket">BassFigureBracket</a>, <a href="BassFigureContinuation.es.html#BassFigureContinuation">BassFigureContinuation</a>, <a href="BassFigureLine.es.html#BassFigureLine">BassFigureLine</a>, <a href="BassFigure.es.html#BassFigure">BassFigure</a>, <a href="Clef.es.html#Clef">Clef</a>, <a href="DotColumn.es.html#DotColumn">DotColumn</a>, <a href="InstrumentName.es.html#InstrumentName">InstrumentName</a>, <a href="LedgerLineSpanner.es.html#LedgerLineSpanner">LedgerLineSpanner</a>, <a href="NoteCollision.es.html#NoteCollision">NoteCollision</a>, <a href="OctavateEight.es.html#OctavateEight">OctavateEight</a>, <a href="RestCollision.es.html#RestCollision">RestCollision</a>, <a href="ScriptRow.es.html#ScriptRow">ScriptRow</a>, <a href="SostenutoPedalLineSpanner.es.html#SostenutoPedalLineSpanner">SostenutoPedalLineSpanner</a>, <a href="StaffSpacing.es.html#StaffSpacing">StaffSpacing</a>, <a href="StaffSymbol.es.html#StaffSymbol">StaffSymbol</a>, <a href="SustainPedalLineSpanner.es.html#SustainPedalLineSpanner">SustainPedalLineSpanner</a>, <a href="TimeSignature.es.html#TimeSignature">TimeSignature</a>, <a href="UnaCordaPedalLineSpanner.es.html#UnaCordaPedalLineSpanner">UnaCordaPedalLineSpanner</a> and <a href="VerticalAxisGroup.es.html#VerticalAxisGroup">VerticalAxisGroup</a>.
<p>This context sets the following properties:
<ul>
<li>Set grob-property <code>staff-padding</code> in <a href="Script.es.html#Script">Script</a> to <code>0.75</code>.
<li>Set translator property <code>clefPosition</code> to <code>0</code>.
<li>Set translator property <code>clefGlyph</code> to <code>clefs.percussion</code>.
<li>Set translator property <code>shortInstrumentName</code> to <code>'()</code>.
<li>Set translator property <code>instrumentName</code> to <code>'()</code>.
<li>Set grob-property <code>minimum-Y-extent</code> in <a href="VerticalAxisGroup.es.html#VerticalAxisGroup">VerticalAxisGroup</a> to <code>'(-4 . 4)</code>.
<li>Set translator property <code>ignoreFiguredBassRest</code> to <code>#t</code>.
<li>Set translator property <code>createSpacing</code> to <code>#t</code>.
<li>Set translator property <code>localKeySignature</code> to <code>'()</code>.
</ul>
<p>Context DrumStaff can contain
<a href="DrumVoice.es.html#DrumVoice">DrumVoice</a> and <a href="CueVoice.es.html#CueVoice">CueVoice</a>.
<p>This context is built from the following engraver(s):
<blockquote>
<dl>
<dt><code><a href="Script_005frow_005fengraver.es.html#Script_005frow_005fengraver">Script_row_engraver</a></code><dd>Determine order in horizontal side position elements.
<p>This engraver creates the following layout object(s):
<p><a href="ScriptRow.es.html#ScriptRow">ScriptRow</a>.
<br><dt><code><a href="Figured_005fbass_005fposition_005fengraver.es.html#Figured_005fbass_005fposition_005fengraver">Figured_bass_position_engraver</a></code><dd>Position figured bass alignments over notes.
<p>This engraver creates the following layout object(s):
<p><a href="BassFigureAlignmentPositioning.es.html#BassFigureAlignmentPositioning">BassFigureAlignmentPositioning</a>.
<br><dt><code><a href="Figured_005fbass_005fengraver.es.html#Figured_005fbass_005fengraver">Figured_bass_engraver</a></code><dd>Make figured bass numbers.
<p>Music types accepted:
<p><a href="bass_002dfigure_002devent.es.html#bass_002dfigure_002devent">bass-figure-event</a> and <a href="rest_002devent.es.html#rest_002devent">rest-event</a>
<p>Properties (read)
<blockquote>
<dl>
<dt><code>figuredBassAlterationDirection</code> (direction)<dd>Where to put alterations
relative to the main figure.
<br><dt><code>figuredBassCenterContinuations</code> (boolean)<dd>Whether to vertically
center pairs of extender lines. This does not work with three or more
lines.
<br><dt><code>figuredBassFormatter</code> (procedure)<dd>A routine generating a markup
for a bass figure.
<br><dt><code>implicitBassFigures</code> (list)<dd>A list of bass figures that are not
printed as numbers, but only as extender lines.
<br><dt><code>useBassFigureExtenders</code> (boolean)<dd>Whether to use extender lines
for repeated bass figures.
<br><dt><code>ignoreFiguredBassRest</code> (boolean)<dd>Don't swallow rest events.
</dl>
</blockquote>
<p>This engraver creates the following layout object(s):
<p><a href="BassFigure.es.html#BassFigure">BassFigure</a>, <a href="BassFigureAlignment.es.html#BassFigureAlignment">BassFigureAlignment</a>, <a href="BassFigureBracket.es.html#BassFigureBracket">BassFigureBracket</a>, <a href="BassFigureContinuation.es.html#BassFigureContinuation">BassFigureContinuation</a> and <a href="BassFigureLine.es.html#BassFigureLine">BassFigureLine</a>.
<br><dt><code><a href="Axis_005fgroup_005fengraver.es.html#Axis_005fgroup_005fengraver">Axis_group_engraver</a></code><dd>Group all objects created in this context in a <code>VerticalAxisGroup</code> spanner.
<p>Properties (read)
<blockquote>
<dl>
<dt><code>currentCommandColumn</code> (layout object)<dd>Grob that is X-parent to all
current breakable (clef, key signature, etc.) items.
</dl>
</blockquote>
<p>This engraver creates the following layout object(s):
<p><a href="VerticalAxisGroup.es.html#VerticalAxisGroup">VerticalAxisGroup</a>.
<br><dt><code><a href="Instrument_005fname_005fengraver.es.html#Instrument_005fname_005fengraver">Instrument_name_engraver</a></code><dd>Create a system start text for instrument or vocal names.
<p>Properties (read)
<blockquote>
<dl>
<dt><code>currentCommandColumn</code> (layout object)<dd>Grob that is X-parent to all
current breakable (clef, key signature, etc.) items.
<br><dt><code>shortInstrumentName</code> (markup)<dd>See <code>instrument</code>.
<br><dt><code>instrumentName</code> (markup)<dd>The name to print left of a staff. The
<code>instrument</code> property labels the staff in the first system, and
the <code>instr</code> property labels following lines.
<br><dt><code>shortVocalName</code> (markup)<dd>Name of a vocal line, short version.
<br><dt><code>vocalName</code> (markup)<dd>Name of a vocal line.
</dl>
</blockquote>
<p>This engraver creates the following layout object(s):
<p><a href="InstrumentName.es.html#InstrumentName">InstrumentName</a>.
<br><dt><code><a href="Piano_005fpedal_005falign_005fengraver.es.html#Piano_005fpedal_005falign_005fengraver">Piano_pedal_align_engraver</a></code><dd>Align piano pedal symbols and brackets.
<p>Properties (read)
<blockquote>
<dl>
<dt><code>currentCommandColumn</code> (layout object)<dd>Grob that is X-parent to all
current breakable (clef, key signature, etc.) items.
</dl>
</blockquote>
<p>This engraver creates the following layout object(s):
<p><a href="SostenutoPedalLineSpanner.es.html#SostenutoPedalLineSpanner">SostenutoPedalLineSpanner</a>, <a href="SustainPedalLineSpanner.es.html#SustainPedalLineSpanner">SustainPedalLineSpanner</a> and <a href="UnaCordaPedalLineSpanner.es.html#UnaCordaPedalLineSpanner">UnaCordaPedalLineSpanner</a>.
<br><dt><code><a href="Rest_005fcollision_005fengraver.es.html#Rest_005fcollision_005fengraver">Rest_collision_engraver</a></code><dd>Handle collisions of rests.
<p>This engraver creates the following layout object(s):
<p><a href="RestCollision.es.html#RestCollision">RestCollision</a>.
<br><dt><code><a href="Collision_005fengraver.es.html#Collision_005fengraver">Collision_engraver</a></code><dd>Collect <code>NoteColumns</code>, and as soon as there are two or more, put them in a <code>NoteCollision</code> object.
<p>This engraver creates the following layout object(s):
<p><a href="NoteCollision.es.html#NoteCollision">NoteCollision</a>.
<br><dt><code><a href="Staff_005fsymbol_005fengraver.es.html#Staff_005fsymbol_005fengraver">Staff_symbol_engraver</a></code><dd>Create the constellation of five (default) staff lines.
<p>Music types accepted:
<p><a href="staff_002dspan_002devent.es.html#staff_002dspan_002devent">staff-span-event</a>
<p>This engraver creates the following layout object(s):
<p><a href="StaffSymbol.es.html#StaffSymbol">StaffSymbol</a>.
<br><dt><code><a href="Ledger_005fline_005fengraver.es.html#Ledger_005fline_005fengraver">Ledger_line_engraver</a></code><dd>Create the spanner to draw ledger lines, and notices objects that need ledger lines.
<p>This engraver creates the following layout object(s):
<p><a href="LedgerLineSpanner.es.html#LedgerLineSpanner">LedgerLineSpanner</a>.
<br><dt><code><a href="Time_005fsignature_005fengraver.es.html#Time_005fsignature_005fengraver">Time_signature_engraver</a></code><dd>Create a <a href="TimeSignature.es.html#TimeSignature">TimeSignature</a> whenever <code>timeSignatureFraction</code> changes.
<p>Properties (read)
<blockquote>
<dl>
<dt><code>implicitTimeSignatureVisibility</code> (vector)<dd>break visibility for
the default time signature.
<br><dt><code>timeSignatureFraction</code> (pair of numbers)<dd>A pair of numbers,
signifying the time signature. For example, <code>#'(4 . 4)</code> is a
4/4 time signature.
</dl>
</blockquote>
<p>This engraver creates the following layout object(s):
<p><a href="TimeSignature.es.html#TimeSignature">TimeSignature</a>.
<br><dt><code><a href="Clef_005fengraver.es.html#Clef_005fengraver">Clef_engraver</a></code><dd>Determine and set reference point for pitches.
<p>Properties (read)
<blockquote>
<dl>
<dt><code>clefGlyph</code> (string)<dd>Name of the symbol within the music font.
<br><dt><code>clefOctavation</code> (integer)<dd>Add this much extra octavation.
Values of 7 and -7 are common.
<br><dt><code>clefPosition</code> (number)<dd>Where should the center of the clef
symbol go, measured in half staff spaces from the center of the
staff.
<br><dt><code>explicitClefVisibility</code> (vector)<dd>‘<samp><span class="samp">break-visibility</span></samp>’
function for clef changes.
<br><dt><code>forceClef</code> (boolean)<dd>Show clef symbol, even if it has not
changed. Only active for the first clef after the property is set, not
for the full staff.
</dl>
</blockquote>
<p>This engraver creates the following layout object(s):
<p><a href="Clef.es.html#Clef">Clef</a> and <a href="OctavateEight.es.html#OctavateEight">OctavateEight</a>.
<br><dt><code><a href="Staff_005fcollecting_005fengraver.es.html#Staff_005fcollecting_005fengraver">Staff_collecting_engraver</a></code><dd>Maintain the <code>stavesFound</code> variable.
<p>Properties (read)
<blockquote>
<dl>
<dt><code>stavesFound</code> (list of grobs)<dd>A list of all staff-symbols found.
</dl>
</blockquote>
Properties (write)
<blockquote>
<dl>
<dt><code>stavesFound</code> (list of grobs)<dd>A list of all staff-symbols found.
</dl>
</blockquote>
<br><dt><code><a href="Dot_005fcolumn_005fengraver.es.html#Dot_005fcolumn_005fengraver">Dot_column_engraver</a></code><dd>Engrave dots on dotted notes shifted to the right of the note. If omitted, then dots appear on top of the notes.
<p>This engraver creates the following layout object(s):
<p><a href="DotColumn.es.html#DotColumn">DotColumn</a>.
<br><dt><code><a href="Separating_005fline_005fgroup_005fengraver.es.html#Separating_005fline_005fgroup_005fengraver">Separating_line_group_engraver</a></code><dd>Generate objects for computing spacing parameters.
<p>Properties (read)
<blockquote>
<dl>
<dt><code>createSpacing</code> (boolean)<dd>Create <code>StaffSpacing</code> objects?
Should be set for staves.
</dl>
</blockquote>
Properties (write)
<blockquote>
<dl>
<dt><code>hasStaffSpacing</code> (boolean)<dd>True if the current
<code>CommandColumn</code> contains items that will affect spacing.
</dl>
</blockquote>
<p>This engraver creates the following layout object(s):
<p><a href="StaffSpacing.es.html#StaffSpacing">StaffSpacing</a>.
<br><dt><code><a href="Font_005fsize_005fengraver.es.html#Font_005fsize_005fengraver">Font_size_engraver</a></code><dd>Put <code>fontSize</code> into <code>font-size</code> grob property.
<p>Properties (read)
<blockquote>
<dl>
<dt><code>fontSize</code> (number)<dd>The relative size of all grobs in a context.
</dl>
</blockquote>
<br><dt><code><a href="Bar_005fengraver.es.html#Bar_005fengraver">Bar_engraver</a></code><dd>Create barlines. This engraver is controlled through the <code>whichBar</code> property. If it has no bar line to create, it will forbid a linebreak at this point.
<p>Properties (read)
<blockquote>
<dl>
<dt><code>whichBar</code> (string)<dd>This property is read to determine what type
of bar line to create.
<p>Example:
<pre class="example"> \set Staff.whichBar = "|:"
</pre>
<p class="noindent">This will create a start-repeat bar in this staff only. Valid values
are described in <a href="bar_002dline_002dinterface.es.html#bar_002dline_002dinterface">bar-line-interface</a>.
</dl>
</blockquote>
Properties (write)
<blockquote>
<dl>
<dt><code>forbidBreak</code> (boolean)<dd>If set to <code>##t</code>, prevent a line break
at this point.
</dl>
</blockquote>
<p>This engraver creates the following layout object(s):
<p><a href="BarLine.es.html#BarLine">BarLine</a>.
<br><dt><code><a href="Output_005fproperty_005fengraver.es.html#Output_005fproperty_005fengraver">Output_property_engraver</a></code><dd>Apply a procedure to any grob acknowledged.
<p>Music types accepted:
<p><a href="apply_002doutput_002devent.es.html#apply_002doutput_002devent">apply-output-event</a>
</dl>
</blockquote>
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