PianoRoll

Touch oriented piano roll for iOS and macOS

Documentation

Documentation appears here.

You can also build documentation by choosing "Build Documentation" under the "Product" Menu in Xcode.

Demos

The Demo directory contains project demos for iOS and macOS.

The PianoRoll.playground file is quick way to test the piano roll within Xcode.

Use rowBackgroundColor to shade pitch rows, such as black keys and octave roots when pitch 1 is C:

PianoRoll(
    model: $model,
    noteColor: .cyan,
    rowBackgroundColor: { pitch in
        let pitchClass = (pitch - 1) % 12
        if [1, 3, 6, 8, 10].contains(pitchClass) {
            return .black.opacity(0.22)
        }
        if pitchClass == 0 {
            return .white.opacity(0.12)
        }
        return nil
    }
)