v5.0.0
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    Class GraceNote

    Note implements an abstract interface for notes and chords that are rendered on a stave. Notes have some common properties: All of them have a value (e.g., pitch, fret, etc.) and a duration (quarter, half, etc.)

    Some notes have stems, heads, dots, etc. Most notational elements that surround a note are called modifiers, and every note has an associated array of them. All notes also have a rendering context and belong to a stave.

    Hierarchy (View Summary)

    Index

    Constructors

    Properties

    Accessors

    Methods

    addChild addClass addModifier addStroke addToModifierContext applyStyle applyTickMultiplier autoStem buildFlag buildNoteHeads buildStem calcBeamedNotesSlashBBox calcNoteDisplacements calculateKeyProps calculateOptimalStemDirection checkBeam checkContext checkModifierContext checkStave checkStem checkTickContext draw drawFlag drawLedgerLines drawModifiers drawNoteHeads drawStem drawWithStyle getAbsoluteX getAttribute getAttributes getBaseCustomNoteHeadGlyphProps getBeam getBeamCount getBoundingBox getCategory getCenterGlyphX getCenterXShift getContext getDuration getFirstDotPx getFlagStyle getFont getFontScale getFontSize getFormatterMetrics getGlyphProps getGlyphWidth getHeight getIntrinsicTicks getKeyLine getKeyProps getKeys getLedgerLineStyle getLeftDisplacedHeadPx getLeftParenthesisPx getLineForRest getLineNumber getMetrics getModifierContext getModifiers getModifiersByType getModifierStartXY getNoteHeadBeginX getNoteHeadBounds getNoteHeadEndX getNoteType getPlayNote getRightDisplacedHeadPx getRightParenthesisPx getStave getStem getStemDirection getStemExtension getStemExtents getStemLength getStemMinimumLength getStemStyle getStemX getStyle getSVGElement getText getTextMetrics getTickContext getTickMultiplier getTicks getTieLeftX getTieRightX getTuplet getTupletStack getVoice getVoiceShiftWidth getWidth getX getXShift getY getYForBottomText getYForTopText getYs getYShift hasBeam hasClass hasFlag hasStem isCenterAligned isChord isDisplaced isDotted isRendered isRest measureText onRegister postFormat preFormat removeClass renderText reset resetTuplet setAttribute setBeam setCenterAlignment setCenterXShift setContext setDuration setFlagStyle setFont setFontSize setGroupStyle setIgnoreTicks setIntrinsicTicks setKeyLine setKeyStyle setLedgerLineStyle setLeftDisplacedHeadPx setModifierContext setNoteDisplaced setOrigin setOriginX setOriginY setPlayNote setRendered setRightDisplacedHeadPx setStave setStem setStemDirection setStemLength setStemStyle setStyle setText setTickContext setTuplet setVoice setWidth setX setXShift setY setYs setYShift shouldDrawFlag shouldIgnoreTicks format getGlyphProps getTextMeasurementCanvas measureWidth newID parseDuration parseNoteStruct plotMetrics postFormat setTextMeasurementCanvas

    Constructors

    Properties

    _fontInfo: Required<FontInfo>
    _height: number = 0
    _text: string = ''
    _textMetrics: TextMetrics = ...
    _width: number = 0
    alignCenter: boolean
    beam?: Beam
    centerXShift: number
    children: Element[] = []
    clef: string
    customGlyphs: GlyphProps[]
    customTypes: string[]
    displaced: boolean
    dotShiftY: number
    duration: string
    flag: Flag = ...
    fontScale: number
    formatterMetrics: FormatterMetrics
    glyphProps: GlyphProps
    ignoreTicks: boolean
    intrinsicTicks: number
    keyProps: KeyProps[]
    keys: string[]
    ledgerLineStyle: ElementStyle
    leftDisplacedHeadPx: number
    maxLine: number = 0
    metricsValid: boolean = false
    minLine: number = 0
    modifierContext?: ModifierContext
    modifiers: Modifier[]
    noteType: string
    octaveShift?: number
    parent?: Element
    playNote?: Note
    registry?: Registry
    rendered: boolean
    renderOptions: {
        annotationSpacing: number;
        draw?: boolean;
        drawDots?: boolean;
        drawStem?: boolean;
        drawStemThroughStave?: boolean;
        extendLeft?: number;
        extendRight?: number;
        strokePx: number;
        yShift: number;
    }
    rightDisplacedHeadPx: number
    slash: boolean
    slur: boolean
    stave?: Stave
    stem?: Stem
    stemDirection?: number
    stemExtensionOverride?: number
    style: ElementStyle = {}
    tickContext?: TickContext
    tickMultiplier: Fraction
    ticks: Fraction
    tuplet?: Tuplet
    tupletStack: Tuplet[]
    useDefaultHeadX: boolean
    voice?: Voice
    x: number = 0
    xShift: number = 0
    y: number = 0
    ys: number[]
    yShift: number = 0
    DEBUG: boolean = false
    ID: number = 1000

    Accessors

    • get font(): string

      Returns the CSS compatible font string for the text font.

      Returns string

    • set font(f: string): void

      Provide a CSS compatible font string (e.g., 'bold 16px Arial') that will be applied to text (not glyphs).

      Parameters

      • f: string

      Returns void

    • get fontSize(): string

      Returns string

      a CSS font-size string (e.g., '18pt', '12px', '1em').

    • set fontSize(size: string | number): void

      The size is 1) a string of the form '10pt' or '16px', compatible with the CSS font-size property. or 2) a number, which is interpreted as a point size (i.e. 12 == '12pt').

      Parameters

      • size: string | number

      Returns void

    • get fontSizeInPixels(): number

      Returns number

      the font size in px.

    • get fontSizeInPoints(): number

      Returns number

      the font size in pt.

    • get fontStyle(): string

      Returns string

      a CSS font-style string (e.g., 'italic').

    • set fontStyle(style: string): void

      Set the font style.

      Parameters

      • style: string

      Returns void

    • get fontWeight(): string

      Returns string

      a CSS font-weight string (e.g., 'bold'). As in CSS, font-weight is always returned as a string, even if it was set as a number.

    • set fontWeight(weight: string | number): void

      Set the font weight.

      Parameters

      • weight: string | number

      Returns void

    • get postFormatted(): boolean

      Returns boolean

    • set postFormatted(value: boolean): void

      Set postformatted status.

      Parameters

      • value: boolean

      Returns void

    • get preFormatted(): boolean

      Returns boolean

    • set preFormatted(value: boolean): void

      Set preformatted status.

      Parameters

      • value: boolean

      Returns void

    Methods

    • Adds a child to the Element, which lets it inherit the same style as the parent when setGroupStyle() is called.

      Examples of children are noteheads and stems. Modifiers such as Accidentals are generally not set as children.

      Note that StaveNote calls setGroupStyle() when setStyle() is called.

      Parameters

      Returns this

    • Parameters

      • slashStemOffset: number
      • slashBeamOffset: number
      • protrusions: { beam: number; stem: number }

      Returns Record<string, number>

    • Get the absolute X position of this note's tick context. This excludes xShift, so you'll need to factor it in if you're looking for the post-formatted x-position.

      Returns number

    • Returns string

      a CSS font-size string (e.g., '18pt', '12px', '1em'). See Element.fontSizeInPixels or Element.fontSizeInPoints if you need to get a number for calculation purposes.

    • Get the coordinates for where modifiers begin.

      Parameters

      • position: number
      • index: number
      • options: { forceFlagRight?: boolean } = {}

      Returns { x: number; y: number }

    • Get Y positions for this note. Each Y value is associated with an individual pitch/key within the note/chord.

      Returns number[]

    • Check if it has a class label (An element can have multiple class labels).

      Parameters

      • className: string

      Returns boolean

    • Reset the specific Tuplet (if this is not provided, all tuplets are reset). Remove any prior tuplets from the tick calculation and reset the intrinsic tick value.

      Parameters

      Returns this

    • Set an attribute such as 'id', 'class', or 'type'.

      Parameters

      • name: string
      • value: undefined | string

      Returns this

    • Set the element's text font family, size, weight, style (e.g., Arial, 10pt, bold, italic).

      This attribute does not determine the font used for musical Glyphs like treble clefs.

      Parameters

      • Optionalfont: string | FontInfo

        is 1) a FontInfo object or 2) a string formatted as CSS font shorthand (e.g., 'bold 10pt Arial') or 3) a string representing the font family (at least one of size, weight, or style must also be provided).

      • Optionalsize: string | number

        a string specifying the font size and unit (e.g., '16pt'), or a number (the unit is assumed to be 'pt').

      • Optionalweight: string | number

        is a string (e.g., 'bold', 'normal') or a number (100, 200, ... 900).

      • Optionalstyle: string

        is a string (e.g., 'italic', 'normal'). If no arguments are provided, then the font is set to the default font. Each Element subclass may specify its own default by overriding the static TEXT_FONT property.

      Returns this

    • Set the element style used to render.

      Example:

      element.setStyle({ fillStyle: 'red', strokeStyle: 'red' });
      element.drawWithStyle();

      Note: If the element draws additional sub-elements (i.e.: Modifiers in a Stave), the style can be applied to all of them by means of the context:

      element.setStyle({ fillStyle: 'red', strokeStyle: 'red' });
      element.getContext().setFillStyle('red');
      element.getContext().setStrokeStyle('red');
      element.drawWithStyle();

      or using drawWithStyle:

      element.setStyle({ fillStyle: 'red', strokeStyle: 'red' });
      element.drawWithStyle();

      Parameters

      Returns this

    • Set Y positions for this note. Each Y value is associated with an individual pitch/key within the note/chord.

      Parameters

      • ys: number[]

      Returns this