Struct Measure 

pub struct Measure {

    pub number: u32,
    pub time_sig: Option<TimeSignature>,
    pub key_sig: Option<KeySignature>,
    pub clef: Option<Clef>,
    pub tempo: Option<u16>,
    pub tempo_ramp_to: Option<u16>,
    pub instrument_change: Option<InstrumentDefinition>,
    pub tablature_change: Option<TablatureConfig>,
    pub barline_left: Barline,
    pub barline_right: Barline,
    pub volta: Option<VoltaBracket>,
    pub tempo_text: Option<String>,
    pub rehearsal: Option<String>,
    pub navigation: Option<String>,
    pub expression_text: Option<String>,
    pub texts: Vec<StyledText>,
    pub figured_bass: Vec<FiguredBassFigure>,
    pub harp_pedal_diagrams: Vec<HarpPedalDiagram>,
    pub multi_rest_count: Option<u8>,
    pub system_break: bool,
    pub page_break: bool,
    pub section_break: bool,
    pub voices: [Vec<Note>; 4],
    pub source_voice_numbers: [Option<u32>; 4],
    pub actual_length: Option<MeasureLength>,
}

Fields

number: u32

time_sig: Option<TimeSignature>

key_sig: Option<KeySignature>

clef: Option<Clef>

tempo: Option<u16>

tempo_ramp_to: Option<u16>

Optional target BPM at this measure’s end. The playback contract linearly interpolates BPM across the measure; None keeps a constant tempo until the next change.

instrument_change: Option<InstrumentDefinition>

Instrument semantics beginning at this staff-local measure boundary.

tablature_change: Option<TablatureConfig>

Tablature tuning/capo beginning at this staff-local measure boundary.

barline_left: Barline

barline_right: Barline

volta: Option<VoltaBracket>

tempo_text: Option<String>

rehearsal: Option<String>

navigation: Option<String>

Navigation mark: “Segno” | “Coda” | “Fine” | “DaCapo” | “DaCapoAlFine” | “DaCapoAlCoda” | “DalSegno” | “DalSegnoAlFine” | “DalSegnoAlCoda” | “ToCoda”

expression_text: Option<String>

Expression / performance text (“dolce”, “espressivo”, “con fuoco”, etc.).

texts: Vec<StyledText>

figured_bass: Vec<FiguredBassFigure>

Structured MusicXML figured-bass figures in source order.

harp_pedal_diagrams: Vec<HarpPedalDiagram>

Concert-harp pedal diagrams declared by MusicXML <harp-pedals> directions.

multi_rest_count: Option<u8>

When ≥ 2, this measure is displayed as a multi-measure rest spanning N measures.

system_break: bool

Force a new system (row) after this measure.

page_break: bool

Force a new page after this measure.

section_break: bool

Semantic section boundary beginning at this measure. Unlike system and page breaks, this is an editor/navigation marker and has no layout implication.

voices: [Vec<Note>; 4]

Up to 4 voices; voice 0 is the primary voice.

source_voice_numbers: [Option<u32>; 4]

Original positive MusicXML voice numbers associated with the four editable slots.

None retains the legacy convention that slot n serializes as voice n + 1. This lets import preserve sparse source identifiers such as voices 1 and 5 without changing the established fixed-slot editing API.

actual_length: Option<MeasureLength>

Authored length when it differs from the time signature (pickup or irregular bar). None means the measure lasts exactly one bar of its time signature.

Implementations

impl Measure

pub fn empty(numerator: u8, denominator: u8) -> Self

pub fn duration_beats(&self, time_signature: &TimeSignature) -> f64

Beats this measure lasts: its actual_length when present and valid, otherwise its own time signature, otherwise time_signature (the one in effect).

pub fn renumber(&mut self, n: u32)

Trait Implementations

impl Clone for Measure

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Measure

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Measure

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Measure

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.