/// <summary>
/// Called when a mouse button is pressed
/// </summary>
protected override void OnMouseDown(MouseEventArgs e)
{
base.OnMouseDown(e);
MusicNote note;
int x = e.X, y = e.Y + VerticalScroll.Value;
for (int i = 0; i < Notes.Count; ++i)
{
note = Notes[i];
if (note.Bounds.Contains(x, y))
{
if ((Control.ModifierKeys & Keys.Control) == Keys.Control)
{
Notes.RemoveAt(i); //if ctrl is pressed remove the note
Invalidate(false);
}
else //else pass the event to the note
{
inputNote = note;
note.MarkMouseDown(new MouseEventArgs(e.Button, e.Clicks, x - note.Bounds.X, y - note.Bounds.Y, e.Delta));
}
break;
}
}
}
/// <summary>
/// Stops the length adjustment of the specified note
/// </summary>
/// <param name="note">The note whose length to stop adjusting</param>
public void StopAdjustingNote(MusicNote note)
{
if (note != null)
{
noteLengthCandidates.Remove(note);
}
}
/// <summary>
/// Called when a mouse button is released
/// </summary>
protected override void OnMouseUp(MouseEventArgs e)
{
base.OnMouseUp(e);
if (inputNote != null)
{
inputNote.MarkMouseUp(new MouseEventArgs(e.Button, e.Clicks, e.X - inputNote.Bounds.X, e.Y + VerticalScroll.Value - inputNote.Bounds.Y, e.Delta));
inputNote = null;
}
}
/// <summary>
/// Adds the specified note at the end of the staff
/// </summary>
/// <param name="pitch">The pitch of the note</param>
/// <param name="lengthInMillisecs">The length of the note in milliseconds</param>
public MusicNote AddNote(NoteEnum pitch, float lengthInMillisecs)
{
MusicNote note = new MusicNote(this, Keyboard, pitch, lengthInMillisecs, nextNoteLoc);
Notes.Add(note);
UpdateNextLoc(note.Bounds.Width, true, true);
Invalidate(note.Bounds, false);
return(note);
}
/// <summary>
/// Starts the timer for note length adjustment
/// </summary>
/// <param name="note">The note whose length to start adjusting</param>
/// <param name="stopwatch">The stopwatch to measure with</param>
public void StartAdjustingNote(MusicNote note, Stopwatch stopwatch)
{
if (note == null)
{
return;
}
else if (!noteLengthCandidates.ContainsKey(note))
{
noteLengthCandidates.Add(note, stopwatch);
}
Timer.Interval = MinimumTimerInterval;
Timer.Enabled = true;
}
/// <summary>
/// Called when the timer has elapsed
/// </summary>
private void Timer_Tick(object sender, EventArgs e)
{
if (noteLengthCandidates.Count != 0) //if has notes whose lengths are being adjusted live
{
foreach (KeyValuePair <MusicNote, Stopwatch> pair in noteLengthCandidates)
{
pair.Key.Length = ToNoteLength(pair.Value.ElapsedMilliseconds);
}
}
if (isPlaying) //if sequential note playback is running
{
if (playerNoteIndex < Notes.Count)
{
MusicNote currentNote = Notes[playerNoteIndex];
if (currentNoteLength.ElapsedMilliseconds >= currentNote.LengthInMilliseconds) //if current note is finished
{
if (playerNoteIndex < Notes.Count) //stop old note
{
Keyboard.MarkKeyReleased(currentNote.Pitch);
currentNote.Highlighted = false;
}
playerNoteIndex++;
if (playerNoteIndex < Notes.Count)
{
//play new note
currentNote = Notes[playerNoteIndex];
Timer.Interval = Math.Max((int)currentNote.LengthInMilliseconds, MinimumTimerInterval);
Keyboard.MarkKeyPressed(currentNote.Pitch, false);
currentNoteLength.Restart();
currentNote.Highlighted = true;
}
else
{
StopPlayingNotes(); //arrived to the end of the notes
}
}
}
else
{
StopPlayingNotes();
}
}
if (!isPlaying && noteLengthCandidates.Count == 0)
{
Timer.Enabled = false; //nothing left to do
}
}
/// <summary>
/// Called when a mouse button is released on the piano keyboard
/// </summary>
protected override void OnMouseUp(MouseEventArgs e)
{
base.OnMouseUp(e);
if (e.Button == MouseButtons.Left)
{
leftMouseDown = false;
if (lastMouseNote != NoteEnum.None)
{
MidiPlayer.StopNote(lastMouseNote);
Staff.StopAdjustingNote(currentMouseNote);
currentMouseNote = null;
Invalidate(GetNoteArea(lastMouseNote), false);
pressedNotes.Remove(lastMouseNote);
lastMouseNote = NoteEnum.None;
}
}
SilenceStopwatch.Restart();
}
/// <summary>
/// Pauses sequential note playback
/// </summary>
/// <param name="leaveHighlighted">Whether to leave the current note highlighted</param>
public void PausePlayingNotes(bool leaveHighlighted = false)
{
if (!isPlaying)
{
return;
}
isPlaying = false;
if (playerNoteIndex >= 0 && playerNoteIndex < Notes.Count)
{
MusicNote current = Notes[playerNoteIndex];
Keyboard.MarkKeyReleased(current.Pitch);
current.Highlighted = leaveHighlighted;
}
currentNoteLength.Reset();
if (StoppedPlaying != null)
{
StoppedPlaying();
}
}
/// <summary>
/// Marks the specified note as currently pressed
/// </summary>
/// <param name="note">The note to press on the piano keyboard</param>
/// <param name="addToStaff">Whether to add the specified note to the staff</param>
public void MarkKeyPressed(NoteEnum note, bool addToStaff)
{
if (!(note == NoteEnum.None || pressedNotes.ContainsKey(note)))
{
Stopwatch stopwatch = Stopwatch.StartNew();
MidiPlayer.PlayNote(note);
if (addToStaff)
{
int silenceLength = (int)SilenceStopwatch.ElapsedMilliseconds;
NoteLength restLength = Staff.ToNoteLength(silenceLength);
if (restLength >= NoteLength.DemiSemiQuaver)
{
Staff.AddNote(NoteEnum.None, restLength);
}
else
{
MusicNote lastNote = Staff.LastNote;
if (lastNote != null)
{
lastNote.LengthInMilliseconds += silenceLength;
}
}
}
SilenceStopwatch.Restart();
if (addToStaff)
{
MusicNote noteControl = Staff.AddNote(note, NoteLength.HemiDemiSemiQuaver);
pressedNotes.Add(note, noteControl);
Staff.StartAdjustingNote(noteControl, stopwatch);
}
else
{
pressedNotes.Add(note, null);
}
Invalidate(GetNoteArea(note), false);
}
}
/// <summary>
/// Called when the mouse is moved on the piano keyboard
/// </summary>
protected override void OnMouseMove(MouseEventArgs e)
{
base.OnMouseMove(e);
if (leftMouseDown)
{
Stopwatch stopwatch = Stopwatch.StartNew();
lastCursorLocation = e.Location;
NoteEnum currentNote = GetNoteAtPoint(e.Location);
NoteEnum oldNote = lastMouseNote;
if (!pressedNotes.ContainsKey(currentNote))
{
lastMouseNote = currentNote;
if (oldNote != NoteEnum.None)
{
MidiPlayer.StopNote(oldNote);
}
if (currentNote != NoteEnum.None)
{
MidiPlayer.PlayNote(currentNote);
}
if (oldNote != NoteEnum.None)
{
Staff.StopAdjustingNote(currentMouseNote);
currentMouseNote = null;
pressedNotes.Remove(oldNote);
Invalidate(GetNoteArea(oldNote));
}
if (currentNote != NoteEnum.None)
{
currentMouseNote = Staff.AddNote(currentNote, NoteLength.HemiDemiSemiQuaver);
pressedNotes.Add(currentNote, currentMouseNote);
Staff.StartAdjustingNote(currentMouseNote, stopwatch);
Invalidate(GetNoteArea(currentNote));
}
}
}
}
/// <summary>
/// Called when a mouse button is pressed onto the piano keyboard
/// </summary>
protected override void OnMouseDown(MouseEventArgs e)
{
base.OnMouseDown(e);
if (e.Button == MouseButtons.Left)
{
Stopwatch stopwatch = Stopwatch.StartNew();
lastCursorLocation = e.Location;
leftMouseDown = true;
lastMouseNote = GetNoteAtPoint(e.Location);
if (lastMouseNote != NoteEnum.None)
{
MidiPlayer.PlayNote(lastMouseNote);
int silenceLength = (int)SilenceStopwatch.ElapsedMilliseconds;
NoteLength restLength = Staff.ToNoteLength(silenceLength);
if (restLength >= NoteLength.DemiSemiQuaver)
{
Staff.AddNote(NoteEnum.None, restLength);
}
else
{
MusicNote lastNote = Staff.LastNote;
if (lastNote != null)
{
lastNote.LengthInMilliseconds += silenceLength;
}
}
SilenceStopwatch.Restart();
currentMouseNote = Staff.AddNote(lastMouseNote, NoteLength.HemiDemiSemiQuaver);
if (!pressedNotes.ContainsKey(lastMouseNote))
{
pressedNotes.Add(lastMouseNote, currentMouseNote);
}
Staff.StartAdjustingNote(currentMouseNote, stopwatch);
Invalidate(GetNoteArea(lastMouseNote), false);
}
}
}