public static void KeyUp(NSKey _key)
{
using (var eventSource = new CGEventSource(CGEventSourceStateID.HidSystem))
{
var key = (ushort)_key;
using (var keyEvent = new CGEvent(eventSource, key, false))
{
CGEvent.Post(keyEvent, CGEventTapLocation.HID);
}
}
}
public override void DidFinishLaunching(NSNotification notification)
{
// Enumerate the MIDI devices available
var access = MidiAccessManager.Default;
foreach (var i in access.Inputs)
{
Console.WriteLine(i.Id + " : " + i.Name);
}
if (!access.Inputs.Any())
{
Console.WriteLine("No input device found.");
return;
}
var noteToKeyboardMap = new Dictionary <byte, KeyboardEvent>();
noteToKeyboardMap.Add(60, new KeyboardEvent((ushort)NSKey.F10, CGEventFlags.Control | CGEventFlags.Shift | CGEventFlags.Command));
noteToKeyboardMap.Add(61, new KeyboardEvent((ushort)NSKey.F11, CGEventFlags.Control | CGEventFlags.Shift | CGEventFlags.Command));
noteToKeyboardMap.Add(62, new KeyboardEvent((ushort)NSKey.F12, CGEventFlags.Control | CGEventFlags.Shift | CGEventFlags.Command));
var iport = access.Inputs.FirstOrDefault(i => i.Id == "Arduino Leonardo") ?? access.Inputs.Last();
var input = access.OpenInputAsync(iport.Id).Result;
Console.WriteLine("Using " + iport.Id);
input.MessageReceived += (obj, e) => {
Console.WriteLine($"{e.Timestamp} {e.Start} {e.Length} {e.Data[0].ToString("X")}");
bool noteEvent = false;
bool noteOn = false;
byte channel = 0;
byte midiKey = 0;
byte velocity = 0;
// Decode the MIDI packet for note information
byte startByte = e.Data[0];
if ((startByte & 0x90) == 0x90)
{
// We have a Note On event
noteEvent = true;
noteOn = true;
// Decode the channel
channel = (byte)(startByte & 0x0F);
// Decode the key value
midiKey = (byte)(e.Data[1] & 0x7F);
// Decode the velocity
velocity = (byte)(e.Data[2] & 0x7F);
}
else if ((startByte & 0x80) == 0x80)
{
// We have a Note Off event
noteEvent = true;
noteOn = false;
// Decode the channel
channel = (byte)(startByte & 0x0F);
// Decode the key value
midiKey = (byte)(e.Data[1] & 0x7F);
// Decode the velocity
velocity = (byte)(e.Data[2] & 0x7F);
}
if (noteEvent == true)
{
// Calculate keyboard event to send based on MIDI key
var key = noteToKeyboardMap[midiKey].keyValue;
CGEventFlags mods = noteToKeyboardMap[midiKey].modifierKeys;
InvokeOnMainThread(() => // Need to run the keyboard interaction code on the main thread
{
using (var eventSource = new CGEventSource(CGEventSourceStateID.CombinedSession))
{
if (noteOn)
{
var keyDownEvent = new CGEvent(eventSource, key, true);
keyDownEvent.Flags = mods;
CGEvent.Post(keyDownEvent, CGEventTapLocation.AnnotatedSession);
}
else
{
var keyUpEvent = new CGEvent(eventSource, key, false);
keyUpEvent.Flags = mods;
CGEvent.Post(keyUpEvent, CGEventTapLocation.AnnotatedSession);
}
};
});
}
};
}
