} //StoreChordPresets
void RestoreChordPresets(ListBox listBox, BinaryReader reader)
{
ChordPresetCollection collection = listBox.ItemsSource as ChordPresetCollection;
collection.Clear();
var selectedIndex = reader.ReadInt32();
var collectionCount = reader.ReadInt32();
for (int index = 0; index < collectionCount; ++index)
{
var name = reader.ReadString();
var stateLength = reader.ReadInt32();
var states = new ChordNoteState[stateLength];
for (int stateIndex = 0; stateIndex < stateLength; ++stateIndex)
{
states[stateIndex] = (ChordNoteState)reader.ReadByte();
}
collection.Add(new ChordPresetItem(name, states));
} //loop
if (selectedIndex >= 0 && selectedIndex < collectionCount - 1)
{
listBox.SelectedIndex = selectedIndex;
}
} //RestoreChordPresets
Action SetupChordPresets(Controls.ChordNoteRadioButton[] chordButtons) // return is reset
{
listBoxChordPresets.Items.Clear();
var presetCollection = new ChordPresetCollection();
listBoxChordPresets.ItemsSource = presetCollection;
// saveChord:
Func <ChordNoteState[]> saveChord = new Func <ChordNoteState[]>(() => {
ChordNoteState[] result = new ChordNoteState[chordButtons.Length];
for (int index = 0; index < chordButtons.Length; ++index)
{
var button = chordButtons[index];
result[index] = button.IsChecked == true ?
ChordNoteState.On : ChordNoteState.Off;
if (button.BigChanger != null && button.BigChanger.IsChecked == true)
{
result[index] |= ChordNoteState.DoubleDouble;
}
if (button.Changer != null && button.Changer.IsChecked == true)
{
result[index] |= ChordNoteState.Double;
}
} //loop
return(result);
}); //makeChordName
// restoreChord:
Action <ChordNoteState[]> restoreChord = new Action <ChordNoteState[]>((savedState) => {
for (int index = 0; index < chordButtons.Length; ++index)
{
var button = chordButtons[index];
if (button.BigChanger != null)
{
button.BigChanger.IsChecked =
(savedState[index] & ChordNoteState.DoubleDouble) == ChordNoteState.DoubleDouble;
}
if (button.Changer != null)
{
button.Changer.IsChecked =
(savedState[index] & ChordNoteState.Double) == ChordNoteState.Double;
}
button.IsChecked = (savedState[index] & ChordNoteState.On) == ChordNoteState.On;
} //loop
}); //restoreChord
// makeChordName:
Func <string> makeChordName = new Func <string>(() => {
var missingName = (string)chordButtons[0].Content;
var result = new StringBuilder();
for (int index = chordButtons.Length - 1; index >= 0; --index)
{
var button = chordButtons[index];
if (button.IsChecked != true)
{
continue;
}
string noteName = (string)button.Content;
if (noteName == "5" || noteName == "3")
{
continue;
}
if (noteName == missingName)
{
continue;
}
if (result.Length > 0 && noteName.Length > 0 &&
!char.IsLetter(noteName[0]) &&
!char.IsLetter(result[result.Length - 1]))
{
result.Append("/");
}
result.Append(noteName);
} //loop
string proposed = result.ToString();
if (proposed.Length < 1)
{
return("major");
}
if (proposed == "m")
{
return("minor");
}
if (proposed.Length == 4 && proposed.Substring(0, 2) == "m5" && proposed[3] == '6')
{
return("dim");
}
if (proposed.StartsWith("2") || proposed.StartsWith("4"))
{
return("sus" + proposed);
}
return(result.ToString());
}); //makeChordName
// setup handlers:
var adjustEnable = new Action <bool>((resetChords) => {
buttonRemoveChordPreset.IsEnabled = listBoxChordPresets.SelectedIndex >= 0;
if (resetChords && !buttonRemoveChordPreset.IsEnabled)
{
ResetChords();
}
}); //adjustEnable
adjustEnable(false);
//
presetCollection.CollectionChanged += (sender, eventArgs) => { adjustEnable(false); };
buttonRemoveChordPreset.Click += (sender, eventArgs) => {
var selected = listBoxChordPresets.SelectedIndex;
if (selected < 0)
{
return;
}
presetCollection.RemoveAt(selected);
if (selected < presetCollection.Count)
{
listBoxChordPresets.SelectedIndex = selected;
}
else if (presetCollection.Count > 0)
{
listBoxChordPresets.SelectedIndex = presetCollection.Count - 1;
}
}; //buttonRemoveChordPreset.Click
buttonAddChordPreset.Click += (sender, eventArgs) => {
var item = new ChordPresetItem(makeChordName(), saveChord());
presetCollection.Add(item);
listBoxChordPresets.SelectedIndex = presetCollection.Count - 1;
}; //buttonAddChordPreset.Click
buttonInsertChordPreset.Click += (sender, eventArgs) => {
var item = new ChordPresetItem(makeChordName(), saveChord());
int index = this.listBoxChordPresets.SelectedIndex;
if (index < 0)
{
index = 0;
}
presetCollection.Insert(index, item);
listBoxChordPresets.SelectedIndex = index;
}; //buttonInsertChordPreset.Click
listBoxChordPresets.SelectionChanged += (sender, eventArgs) => {
bool needsReset = eventArgs.RemovedItems.Count > 0 && eventArgs.AddedItems.Count < 1;
adjustEnable(needsReset);
ListBox listBoxSender = (ListBox)sender;
int index = this.listBoxChordPresets.SelectedIndex;
if (index < 0)
{
return;
}
restoreChord(presetCollection[index].State);
}; //listBoxChordPresets.SelectionChanged
//
Action <string, ChordNoteState[]> resetOne = new Action <string, ChordNoteState[]>((name, chord) => {
presetCollection.Add(new ChordPresetItem(name, chord));
}); //resetOne
Func <int, int, int, ChordNoteState[]> makeTriad = new Func <int, int, int, ChordNoteState[]>((mediant, dominant, leading) => {
ChordNoteState[] chord = new ChordNoteState[chordButtons.Length];
foreach (int index in new int[] { 0, 3, 6, 10 })
{
chord[index] = ChordNoteState.On; // 'x'
}
chord[mediant] = ChordNoteState.On;
chord[dominant] = ChordNoteState.On;
if (leading > 0)
{
chord[leading] = ChordNoteState.On;
}
return(chord);
}); //makeTriad
//makeTriad
Action reset = new Action(() => {
const int fifth = 15; const int none = 0;
presetCollection.Clear();
resetOne("7", makeTriad(19, fifth, 12));
resetOne("minor", makeTriad(18, fifth, none));
resetOne("major", makeTriad(19, fifth, none));
resetOne("7+", makeTriad(19, fifth, 13));
resetOne("dim", makeTriad(18, fifth - 1, 11));
resetOne("6", makeTriad(19, fifth, 11));
resetOne("sus2", makeTriad(17, fifth, none));
resetOne("sus4", makeTriad(20, fifth, none));
resetOne("m5\u2212/7", makeTriad(18, fifth - 1, 12));
}); //reset
//
this.buttonResetChordPreset.Click += (sender, eventArgs) => { reset(); };
reset();
return(reset);
} //SetupChordPresets
