public static void DeleteTime <T>(
this DurationField <T> field,
Duration eraser
)
{
var throughandbeyond =
new Duration {
Start = eraser.Start,
End = field.GeneralDuration.Value.End
};
foreach (var item in field.Intersecting(throughandbeyond).ToArray())
{
var subtractedtime =
item.Duration.Subtract_Time(eraser);
if (subtractedtime != null)
{
field.Move(item, subtractedtime);
}
else
{
field.Remove(item);
}
}
}
public MelodyTrack(
StorageObjectID storageobjectID,
EditorFile file
) :
base(
storageobjectID,
file,
null //TODO
)
{
obj = this.Object();
notes_field.GeneralDuration.AfterChange += GeneralDuration_AfterChange;
next_noteID_obj = obj.GetOrMake("next_noteID");
listener_nextnodeID_contentsset =
next_noteID_obj.CreateListen(IOEvent.ObjectContentsSet, () => {
if (!int.TryParse(next_noteID_obj.ReadAllString(), out next_noteID))
{
next_noteID_obj.WriteAllString("0");
}
});
notes_obj = obj.GetOrMake("notes");
listener_notes_added =
notes_obj.CreateListen(IOEvent.ChildAdded, (key, new_note_objID) => {
var noteID = new NoteID(int.Parse(key));
var new_note_obj = notes_obj.Graph[new_note_objID];
var contents = new_note_obj.ReadAllString().Split('\n');
var duration = CodeTools.ReadDuration(contents[0]);
var tone = new SemiTone(int.Parse(contents[1]));
var note =
new Note(
noteID,
duration,
tone
);
notes_field.Add(noteID, duration);
notes_lookup.Add(noteID, note);
FieldChanged?.Invoke(duration);
});
listener_notes_changed =
notes_obj.CreateListen(IOEvent.ChildContentsSet, (key, changed_note_objID) => {
var noteID = new NoteID(int.Parse(key));
var new_note_obj = notes_obj.Graph[changed_note_objID];
var contents = new_note_obj.ReadAllString().Split('\n');
var duration = CodeTools.ReadDuration(contents[0]);
var tone = new SemiTone(int.Parse(contents[1]));
Note oldnote;
if (notes_lookup.TryGetValue(noteID, out oldnote))
{
if (oldnote.Duration != duration ||
oldnote.Tone != tone)
{
var newnote =
new Note(
noteID,
duration,
tone
);
var oldnoteduration =
oldnote.Duration;
notes_lookup[noteID] = newnote;
notes_field.Move(noteID, oldnoteduration, duration);
FieldChanged?.Invoke(oldnoteduration.Union(duration));
}
}
});
listener_notes_removed =
notes_obj.CreateListen(IOEvent.ChildRemoved, (key, old_note_objID) => {
var noteID = new NoteID(int.Parse(key));
var oldnote = notes_lookup[noteID];
notes_field.Remove(noteID, oldnote.Duration);
notes_lookup.Remove(noteID);
FieldChanged?.Invoke(oldnote.Duration);
});
}
