/// <summary>
/// An edit has finished - adjust following tracks so there is 5 sec before and after start & end
/// </summary>
void ChangesFinished(object sender, TrackJoin e) {
// Undoable action - save current track gaps and lengths on stack
StackUndo(new UndoMove(), false, delegate() {
int i = m_Tracks.IndexOf(e) + 1;
if (i > 0) {
while (i < m_Tracks.Count) {
TrackJoin j = m_Tracks[i++];
j.Adjust(5);
}
}
});
}
/// <summary>
/// User has change a track gap, and has pressed Ctrl to alter all the others, so need to update all subsequent ones
/// </summary>
void GapChanged(object sender, TrackJoin.CascadingEvent e) {
// Keep following track lengths same, but change all the gaps
int i = m_Tracks.IndexOf(e.Track) + 1;
float change = 0;
if (i > 0) {
while (i < m_Tracks.Count) {
TrackJoin j = m_Tracks[i++];
j.End += change;
change += e.Change;
j.Start += change;
}
}
}
/// <summary>
/// User has change the start of a track, and lock is on, so need to update all subsequent ones
/// </summary>
void StartChanged(object sender, TrackJoin.CascadingEvent e) {
// Keep following track lengths the same
int i = m_Tracks.IndexOf(e.Track) + 1;
if (i > 0) {
while (i < m_Tracks.Count) {
TrackJoin j = m_Tracks[i++];
j.End += e.Change;
j.Start += e.Change;
}
}
}
/// <summary>
/// Build TrackJoin controls to display joins between (and after) tracks.
/// Must be called from UI thread.
/// </summary>
public void BuildTrackJoins() {
Status("Creating display");
m_Tracks = new List<TrackJoin>();
if (Program.Album != null) {
TrackJoin prev = null; // TrackJoins need to be linked to previous one (to calculate length, etc.)
foreach (Track t in Program.Album.Tracks) {
TrackJoin j = new TrackJoin(prev, t) {
Dock = DockStyle.Top,
Name = "Track" + m_Tracks.Count,
};
j.waveControl.WaveFile = m_Reader;
m_Tracks.Add(j);
// Attach event handlers to tidy up after edits
j.StartChanged += StartChanged;
j.GapChanged += GapChanged;
j.ChangesFinished += ChangesFinished;
prev = j;
}
// Now one for the end of the album
TrackJoin end = new TrackJoin(prev, null) {
ShowStart = false, // No start of next track
Dock = DockStyle.Top,
Name = "End"
};
end.waveControl.WaveFile = m_Reader;
m_Tracks.Add(end);
}
// Add to panel - reverse causes dock to put them in the right order
m_Tracks.Reverse();
trackPanel.Controls.Clear();
trackPanel.Controls.AddRange(m_Tracks.ToArray());
m_Tracks.Reverse();
}
/// <summary>
/// Constructor used by MainForm when making list of tracks.
/// Sets everything inteligently according to prev
/// </summary>
/// <param name="prev">Previous track TrackJoin</param>
/// <param name="t">Track</param>
public TrackJoin(TrackJoin prev, Track t) : this() {
Previous = prev;
ShowEnd = prev != null; // No end cursor on first track
Track = t;
UpdateFromTrack();
}
public CascadingEvent(TrackJoin track, float change) {
Track = track;
Change = change;
}