paintNote method

void paintNote(Canvas canvas, Size size, Note note, Offset offset,)

Implementation

void paintNote(Canvas canvas, Size size, Note note, Offset offset) {
  const double minNoteRadius = 3;
  const double maxNoteRadius = 20;
  const double noteRadiusRangeDiff = maxNoteRadius - minNoteRadius;
  const double minShadowElevation = 1;
  const double maxShadowElevation = 5;
  final double noteRadius = (min(size.width / 2, size.height) * .09).clamp(
    minNoteRadius,
    maxNoteRadius,
  );
  final shadowElevation =
      ((noteRadius - minNoteRadius) / noteRadiusRangeDiff) *
      maxShadowElevation;
  final path = Path()
    ..addOval(Rect.fromCircle(center: offset, radius: noteRadius));
  canvas.drawShadow(
    path,
    tabContext.noteLabelColor,
    max(minShadowElevation, shadowElevation),
    false,
  );
  canvas.drawPath(path, tabContext.noteShapePaint);

  final textStyle = TextStyle(
    color: tabContext.noteLabelColor,
    fontSize: noteRadius * 1.5,
  );
  final textSpan = TextSpan(text: note.fret.toString(), style: textStyle);
  final textPainter = TextPainter(
    text: textSpan,
    textDirection: TextDirection.ltr,
  );
  textPainter.layout();
  textPainter.paint(
    canvas,
    offset - Offset(textPainter.size.width / 2, textPainter.size.height / 2),
  );

  if (note.melody) {
    canvas.drawCircle(offset, noteRadius, tabContext.techniquePaint);
  }
}