private void SetStemAndFlags(ChordSymbol chord, List<HeadMetrics> topDownHeadsMetrics, float stemThickness)
{
DurationClass durationClass = chord.DurationClass;
_flagsBlockMetrics = null;
if(chord.BeamBlock == null
&& (durationClass == DurationClass.quaver
|| durationClass == DurationClass.semiquaver
|| durationClass == DurationClass.threeFlags
|| durationClass == DurationClass.fourFlags
|| durationClass == DurationClass.fiveFlags))
{
_flagsBlockMetrics = GetFlagsBlockMetrics(topDownHeadsMetrics,
durationClass,
chord.FontHeight,
chord.Stem.Direction,
stemThickness);
}
if(durationClass == DurationClass.minim
|| durationClass == DurationClass.crotchet
|| durationClass == DurationClass.quaver
|| durationClass == DurationClass.semiquaver
|| durationClass == DurationClass.threeFlags
|| durationClass == DurationClass.fourFlags
|| durationClass == DurationClass.fiveFlags)
{
_stemMetrics = NewStemMetrics(topDownHeadsMetrics, chord, _flagsBlockMetrics, stemThickness);
}
}
/// <summary>
/// Returns null if the durationClass does not have a flagsBlock,
/// otherwise returns the metrics for the flagsBlock attached to this chord, correctly positioned wrt the noteheads.
/// </summary>
private FlagsBlockMetrics GetFlagsBlockMetrics(List<HeadMetrics> topDownHeadsMetrics, DurationClass durationClass, float fontSize, VerticalDir stemDirection, float stemThickness)
{
Debug.Assert(durationClass == DurationClass.quaver
|| durationClass == DurationClass.semiquaver
|| durationClass == DurationClass.threeFlags
|| durationClass == DurationClass.fourFlags
|| durationClass == DurationClass.fiveFlags);
FlagsBlockMetrics flagsBlockMetrics = new FlagsBlockMetrics(durationClass, fontSize, stemDirection);
if(flagsBlockMetrics != null)
{
// flagsMetrics contains a metrics for the flags block with the outermost point at OriginX=0, BaselineY=0
// Now move the flagblock so that is positioned correctly wrt the noteheads.
SetFlagsPositionReNoteheads(topDownHeadsMetrics, flagsBlockMetrics, stemDirection, stemThickness);
}
return flagsBlockMetrics;
}