/// <summary>
/// Copies Systems[systemIndex]'s content to the end of the previous system (taking account of clefs),
/// then removes Systems[systemIndex] from the Systems list.
/// </summary>
/// <param name="barlineIndex"></param>
private void JoinToPreviousSystem(int systemIndex)
{
Debug.Assert(Systems.Count > 1 && Systems.Count > systemIndex);
SvgSystem system1 = Systems[systemIndex - 1];
SvgSystem system2 = Systems[systemIndex];
Debug.Assert(system1.Staves.Count == system2.Staves.Count);
for (int staffIndex = 0; staffIndex < system2.Staves.Count; staffIndex++)
{
bool visibleStaff = !(system1.Staves[staffIndex] is InvisibleOutputStaff);
string clefTypeAtEndOfStaff1 = null;
if (visibleStaff)
{
// If a staff has two voices, both contain the same clefTypes (some clefs may be invisible).
clefTypeAtEndOfStaff1 = FindClefTypeAtEndOfStaff1(system1.Staves[staffIndex].Voices[0]);
}
for (int voiceIndex = 0; voiceIndex < system2.Staves[staffIndex].Voices.Count; voiceIndex++)
{
Voice voice1 = system1.Staves[staffIndex].Voices[voiceIndex];
Voice voice2 = system2.Staves[staffIndex].Voices[voiceIndex];
if (visibleStaff)
{
ClefSymbol voice2FirstClef = voice2.NoteObjects[0] as ClefSymbol;
Debug.Assert(voice2FirstClef != null && clefTypeAtEndOfStaff1 == voice2FirstClef.ClefType);
voice2.NoteObjects.Remove(voice2FirstClef);
}
try
{
voice1.AppendNoteObjects(voice2.NoteObjects);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
}
Systems.Remove(system2);
system2 = null;
}
