Customisable and editable time table grid for showing midi or audio related data with a measure.

• Swift 3+
• iOS 9.0+

pod 'MIDITimeTableView'

Create a MIDITimeTableView either programmatically or from storyboard and implement its MIDITimeTableViewDataSource and MIDITimeTableViewDelegate methods.

You need a data object to store each row and its cells data.

var rowData: [MIDITimeTableRowData] = [
  MIDITimeTableRowData(
    cells: [
      MIDITimeTableCellData(data: "C7", position: 0, duration: 4),
      MIDITimeTableCellData(data: "Dm7", position: 4, duration: 4),
      MIDITimeTableCellData(data: "G7b5", position: 8, duration: 4),
      MIDITimeTableCellData(data: "C7", position: 12, duration: 4),
    ],
    headerCellView: HeaderCellView(title: "Chords"),
    cellView: { cellData in
      let title = cellData.data as? String ?? ""
      return CellView(title: title)
    }),
]

MIDITimeTableViewDataSource is very likely to UITableViewDataSource or UICollectionViewDataSource API. Just feed the row data, number of rows, time signature and you are ready to go.

func numberOfRows(in midiTimeTableView: MIDITimeTableView) -> Int {
  return rowData.count
}

func timeSignature(of midiTimeTableView: MIDITimeTableView) -> MIDITimeTableTimeSignature {
  return MIDITimeTableTimeSignature(beats: 4, noteValue: .quarter)
}

func midiTimeTableView(_ midiTimeTableView: MIDITimeTableView, rowAt index: Int) -> MIDITimeTableRowData {
  let row = rowData[index]
  return row
}

You can customise the measure bar, the grid, each header and data cell. Check out the example project.

MIDITimeTableCellView's are editable, you can move around them on the grid, resize their duration or long press to open a delete menu. Also, you need to subclass yourself to present your own data on it.

You can set the minMeasureWidth and maxMeasureWidth to set zoom levels of the time table.

Full documentation here.

This library used in my app ChordBud, check it out!