public void TestNotesOverlap()
{
SheetMusic.SetNoteSize(false);
KeySignature key = new KeySignature(0, 0);
int quarter = 400;
TimeSignature time = new TimeSignature(4, 4, quarter, 60000);
int num1 = WhiteNote.BottomTreble.Number();
int num2 = num1 + 1;
MidiNote note1 = new MidiNote(0, 0, num1, quarter);
MidiNote note2 = new MidiNote(0, 0, num2, quarter);
List<MidiNote> notes = new List<MidiNote>(2);
notes.Add(note1);
notes.Add(note2);
ChordSymbol chord = new ChordSymbol(notes, key, time, Clef.Treble, null);
Assert.AreEqual(chord.ToString(),
"ChordSymbol clef=Treble start=0 end=400 width=25 hastwostems=False AccidSymbol accid=Sharp whitenote=F4 clef=Treble width=9 Note whitenote=F4 duration=Quarter leftside=True Note whitenote=F4 duration=Quarter leftside=True Stem duration=Quarter direction=1 top=F4 bottom=F4 end=E5 overlap=False side=2 width_to_pair=0 receiver_in_pair=False ");
}
private int ytop; /** The y pixel of the top of the staff */
#endregion Fields
#region Constructors
/** Create a new staff with the given list of music symbols,
* and the given key signature. The clef is determined by
* the clef of the first chord symbol. The track number is used
* to determine whether to join this left/right vertical sides
* with the staffs above and below. The SheetMusicOptions are used
* to check whether to display measure numbers or not.
*/
public Staff(List<MusicSymbol> symbols, KeySignature key,
MidiOptions options,
int tracknum, int totaltracks)
{
keysigWidth = SheetMusic.KeySignatureWidth(key);
this.tracknum = tracknum;
this.totaltracks = totaltracks;
showMeasures = (options.showMeasures && tracknum == 0);
measureLength = options.time.Measure;
Clef clef = FindClef(symbols);
clefsym = new ClefSymbol(clef, 0, false);
keys = key.GetSymbols(clef);
this.symbols = symbols;
CalculateWidth(options.scrollVert);
CalculateHeight();
CalculateStartEndTime();
FullJustify();
}
private int measureLength; /** The time (in pulses) of a measure */
/** Create a new staff with the given list of music symbols,
* and the given key signature. The clef is determined by
* the clef of the first chord symbol. The track number is used
* to determine whether to join this left/right vertical sides
* with the staffs above and below. The SheetMusicOptions are used
* to check whether to display measure numbers or not.
*/
public Staff(List <MusicSymbol> symbols, KeySignature key,
MidiOptions options,
int tracknum, int totaltracks)
{
keysigWidth = SheetMusic.KeySignatureWidth(key);
this.tracknum = tracknum;
this.totaltracks = totaltracks;
showMeasures = (options.showMeasures && tracknum == 0);
measureLength = options.time.Measure;
Clef clef = FindClef(symbols);
clefsym = new ClefSymbol(clef, 0, false);
keys = key.GetSymbols(clef);
this.symbols = symbols;
CalculateWidth(options.scrollVert);
CalculateHeight();
CalculateStartEndTime();
FullJustify();
}
CreateNoteData(List <MidiNote> midinotes, KeySignature key,
TimeSignature time)
{
int len = midinotes.Count;
NoteData[] notedata = new NoteData[len];
for (int i = 0; i < len; i++)
{
MidiNote midi = midinotes[i];
notedata[i] = new NoteData();
notedata[i].number = midi.Number;
notedata[i].leftside = true;
notedata[i].whitenote = key.GetWhiteNote(midi.Number);
notedata[i].duration = time.GetNoteDuration(midi.EndTime - midi.StartTime);
notedata[i].accid = key.GetAccidental(midi.Number, midi.StartTime / time.Measure);
if (i > 0 && (notedata[i].whitenote.Dist(notedata[i - 1].whitenote) == 1))
{
/* This note (notedata[i]) overlaps with the previous note.
* Change the side of this note.
*/
if (notedata[i - 1].leftside)
{
notedata[i].leftside = false;
}
else
{
notedata[i].leftside = true;
}
}
else
{
notedata[i].leftside = true;
}
}
return(notedata);
}
List <ChordSymbol> CreateChords(List <MidiNote> midinotes,
KeySignature key,
TimeSignature time,
ClefMeasures clefs)
{
int i = 0;
List <ChordSymbol> chords = new List <ChordSymbol>();
List <MidiNote> notegroup = new List <MidiNote>(12);
int len = midinotes.Count;
while (i < len)
{
int starttime = midinotes[i].StartTime;
Clef clef = clefs.GetClef(starttime);
/* Group all the midi notes with the same start time
* into the notes list.
*/
notegroup.Clear();
notegroup.Add(midinotes[i]);
i++;
while (i < len && midinotes[i].StartTime == starttime)
{
notegroup.Add(midinotes[i]);
i++;
}
/* Create a single chord from the group of midi notes with
* the same start time.
*/
ChordSymbol chord = new ChordSymbol(notegroup, key, time, clef, this);
chords.Add(chord);
}
return(chords);
}
/** Given the raw midi notes (the note number and duration in pulses),
* calculate the following note data:
* - The white key
* - The accidental (if any)
* - The note duration (half, quarter, eighth, etc)
* - The side it should be drawn (left or side)
* By default, notes are drawn on the left side. However, if two notes
* overlap (like A and B) you cannot draw the next note directly above it.
* Instead you must shift one of the notes to the right.
*
* The KeySignature is used to determine the white key and accidental.
* The TimeSignature is used to determine the duration.
*/
private static NoteData[] CreateNoteData(List<MidiNote> midinotes, KeySignature key,
TimeSignature time)
{
int len = midinotes.Count;
NoteData[] notedata = new NoteData[len];
for (int i = 0; i < len; i++) {
MidiNote midi = midinotes[i];
notedata[i] = new NoteData();
notedata[i].number = midi.Number;
notedata[i].leftside = true;
notedata[i].whitenote = key.GetWhiteNote(midi.Number);
notedata[i].duration = time.GetNoteDuration(midi.EndTime - midi.StartTime);
notedata[i].accid = key.GetAccidental(midi.Number, midi.StartTime / time.Measure);
if (i > 0 && (notedata[i].whitenote.Dist(notedata[i-1].whitenote) == 1)) {
/* This note (notedata[i]) overlaps with the previous note.
* Change the side of this note.
*/
if (notedata[i-1].leftside) {
notedata[i].leftside = false;
} else {
notedata[i].leftside = true;
}
} else {
notedata[i].leftside = true;
}
}
return notedata;
}
private int width; /** The width of the chord */
#endregion Fields
#region Constructors
/** Create a new Chord Symbol from the given list of midi notes.
* All the midi notes will have the same start time. Use the
* key signature to get the white key and accidental symbol for
* each note. Use the time signature to calculate the duration
* of the notes. Use the clef when drawing the chord.
*/
public ChordSymbol(List<MidiNote> midinotes, KeySignature key,
TimeSignature time, Clef c, SheetMusic sheet)
{
int len = midinotes.Count;
int i;
hastwostems = false;
clef = c;
sheetmusic = sheet;
starttime = midinotes[0].StartTime;
endtime = midinotes[0].EndTime;
for (i = 0; i < midinotes.Count; i++) {
if (i > 1) {
if (midinotes[i].Number < midinotes[i-1].Number) {
throw new System.ArgumentException("Chord notes not in increasing order by number");
}
}
endtime = Math.Max(endtime, midinotes[i].EndTime);
}
notedata = CreateNoteData(midinotes, key, time);
accidsymbols = CreateAccidSymbols(notedata, clef);
/* Find out how many stems we need (1 or 2) */
NoteDuration dur1 = notedata[0].duration;
NoteDuration dur2 = dur1;
int change = -1;
for (i = 0; i < notedata.Length; i++) {
dur2 = notedata[i].duration;
if (dur1 != dur2) {
change = i;
break;
}
}
if (dur1 != dur2) {
/* We have notes with different durations. So we will need
* two stems. The first stem points down, and contains the
* bottom note up to the note with the different duration.
*
* The second stem points up, and contains the note with the
* different duration up to the top note.
*/
hastwostems = true;
stem1 = new Stem(notedata[0].whitenote,
notedata[change-1].whitenote,
dur1,
Stem.Down,
NotesOverlap(notedata, 0, change)
);
stem2 = new Stem(notedata[change].whitenote,
notedata[notedata.Length-1].whitenote,
dur2,
Stem.Up,
NotesOverlap(notedata, change, notedata.Length)
);
}
else {
/* All notes have the same duration, so we only need one stem. */
int direction = StemDirection(notedata[0].whitenote,
notedata[notedata.Length-1].whitenote,
clef);
stem1 = new Stem(notedata[0].whitenote,
notedata[notedata.Length-1].whitenote,
dur1,
direction,
NotesOverlap(notedata, 0, notedata.Length)
);
stem2 = null;
}
/* For whole notes, no stem is drawn. */
if (dur1 == NoteDuration.Whole)
stem1 = null;
if (dur2 == NoteDuration.Whole)
stem2 = null;
width = MinWidth;
}
CreateStaffsForTrack(List <MusicSymbol> symbols, int measurelen,
KeySignature key, MidiOptions options,
int track, int totaltracks)
{
int keysigWidth = KeySignatureWidth(key);
int startindex = 0;
List <Staff> thestaffs = new List <Staff>(symbols.Count / 50);
while (startindex < symbols.Count)
{
/* startindex is the index of the first symbol in the staff.
* endindex is the index of the last symbol in the staff.
*/
int endindex = startindex;
int width = keysigWidth;
int maxwidth;
/* If we're scrolling vertically, the maximum width is PageWidth. */
if (scrollVert)
{
maxwidth = SheetMusic.PageWidth;
}
else
{
maxwidth = 2000000;
}
while (endindex < symbols.Count &&
width + symbols[endindex].Width < maxwidth)
{
width += symbols[endindex].Width;
endindex++;
}
endindex--;
/* There's 3 possibilities at this point:
* 1. We have all the symbols in the track.
* The endindex stays the same.
*
* 2. We have symbols for less than one measure.
* The endindex stays the same.
*
* 3. We have symbols for 1 or more measures.
* Since measures cannot span multiple staffs, we must
* make sure endindex does not occur in the middle of a
* measure. We count backwards until we come to the end
* of a measure.
*/
if (endindex == symbols.Count - 1)
{
/* endindex stays the same */
}
else if (symbols[startindex].StartTime / measurelen ==
symbols[endindex].StartTime / measurelen)
{
/* endindex stays the same */
}
else
{
int endmeasure = symbols[endindex + 1].StartTime / measurelen;
while (symbols[endindex].StartTime / measurelen ==
endmeasure)
{
endindex--;
}
}
int range = endindex + 1 - startindex;
if (scrollVert)
{
width = SheetMusic.PageWidth;
}
Staff staff = new Staff(symbols.GetRange(startindex, range),
key, options, track, totaltracks);
thestaffs.Add(staff);
startindex = endindex + 1;
}
return(thestaffs);
}
/** Create the chord symbols for a single track.
* @param midinotes The Midinotes in the track.
* @param key The Key Signature, for determining sharps/flats.
* @param time The Time Signature, for determining the measures.
* @param clefs The clefs to use for each measure.
* @ret An array of ChordSymbols
*/
private List<ChordSymbol> CreateChords(List<MidiNote> midinotes,
KeySignature key,
TimeSignature time,
ClefMeasures clefs)
{
int i = 0;
List<ChordSymbol> chords = new List<ChordSymbol>();
List<MidiNote> notegroup = new List<MidiNote>(12);
int len = midinotes.Count;
while (i < len) {
int starttime = midinotes[i].StartTime;
Clef clef = clefs.GetClef(starttime);
/* Group all the midi notes with the same start time
* into the notes list.
*/
notegroup.Clear();
notegroup.Add(midinotes[i]);
i++;
while (i < len && midinotes[i].StartTime == starttime) {
notegroup.Add(midinotes[i]);
i++;
}
/* Create a single chord from the group of midi notes with
* the same start time.
*/
ChordSymbol chord = new ChordSymbol(notegroup, key, time, clef, this);
chords.Add(chord);
}
return chords;
}
/** Return true if this key signature is equal to key signature k */
public bool Equals(KeySignature k)
{
if (k.num_sharps == num_sharps && k.num_flats == num_flats)
return true;
else
return false;
}
private SheetMusic sheetmusic; /** Used to get colors and other options */
/** Create a new Chord Symbol from the given list of midi notes.
* All the midi notes will have the same start time. Use the
* key signature to get the white key and accidental symbol for
* each note. Use the time signature to calculate the duration
* of the notes. Use the clef when drawing the chord.
*/
public ChordSymbol(List <MidiNote> midinotes, KeySignature key,
TimeSignature time, Clef c, SheetMusic sheet)
{
int len = midinotes.Count;
int i;
hastwostems = false;
clef = c;
sheetmusic = sheet;
starttime = midinotes[0].StartTime;
endtime = midinotes[0].EndTime;
for (i = 0; i < midinotes.Count; i++)
{
if (i > 1)
{
if (midinotes[i].Number < midinotes[i - 1].Number)
{
throw new System.ArgumentException("Chord notes not in increasing order by number");
}
}
endtime = Math.Max(endtime, midinotes[i].EndTime);
}
notedata = CreateNoteData(midinotes, key, time);
accidsymbols = CreateAccidSymbols(notedata, clef);
/* Find out how many stems we need (1 or 2) */
NoteDuration dur1 = notedata[0].duration;
NoteDuration dur2 = dur1;
int change = -1;
for (i = 0; i < notedata.Length; i++)
{
dur2 = notedata[i].duration;
if (dur1 != dur2)
{
change = i;
break;
}
}
if (dur1 != dur2)
{
/* We have notes with different durations. So we will need
* two stems. The first stem points down, and contains the
* bottom note up to the note with the different duration.
*
* The second stem points up, and contains the note with the
* different duration up to the top note.
*/
hastwostems = true;
stem1 = new Stem(notedata[0].whitenote,
notedata[change - 1].whitenote,
dur1,
Stem.Down,
NotesOverlap(notedata, 0, change)
);
stem2 = new Stem(notedata[change].whitenote,
notedata[notedata.Length - 1].whitenote,
dur2,
Stem.Up,
NotesOverlap(notedata, change, notedata.Length)
);
}
else
{
/* All notes have the same duration, so we only need one stem. */
int direction = StemDirection(notedata[0].whitenote,
notedata[notedata.Length - 1].whitenote,
clef);
stem1 = new Stem(notedata[0].whitenote,
notedata[notedata.Length - 1].whitenote,
dur1,
direction,
NotesOverlap(notedata, 0, notedata.Length)
);
stem2 = null;
}
/* For whole notes, no stem is drawn. */
if (dur1 == NoteDuration.Whole)
{
stem1 = null;
}
if (dur2 == NoteDuration.Whole)
{
stem2 = null;
}
width = MinWidth;
}
/** Get the width (in pixels) needed to display the key signature */
public static int KeySignatureWidth(KeySignature key)
{
ClefSymbol clefsym = new ClefSymbol(Clef.Treble, 0, false);
int result = clefsym.MinWidth;
AccidSymbol[] keys = key.GetSymbols(Clef.Treble);
foreach (AccidSymbol symbol in keys) {
result += symbol.MinWidth;
}
return result + SheetMusic.LeftMargin + 5;
}
public void TestGetAccidentalSameMeasure()
{
KeySignature k;
/* G Major, F# */
k = new KeySignature(1, 0);
int note = NoteScale.ToNumber(NoteScale.C, 1);
Assert.AreEqual(k.GetWhiteNote(note).Letter, WhiteNote.C);
Assert.AreEqual(k.GetAccidental(note, 1), Accid.None);
Assert.AreEqual(k.GetWhiteNote(note).Letter, WhiteNote.C);
Assert.AreEqual(k.GetAccidental(note, 1), Accid.None);
note = NoteScale.ToNumber(NoteScale.Fsharp, 1);
Assert.AreEqual(k.GetWhiteNote(note).Letter, WhiteNote.F);
Assert.AreEqual(k.GetAccidental(note, 1), Accid.None);
Assert.AreEqual(k.GetWhiteNote(note).Letter, WhiteNote.F);
Assert.AreEqual(k.GetAccidental(note, 1), Accid.None);
note = NoteScale.ToNumber(NoteScale.F, 1);
Assert.AreEqual(k.GetWhiteNote(note).Letter, WhiteNote.F);
Assert.AreEqual(k.GetAccidental(note, 1), Accid.Natural);
Assert.AreEqual(k.GetWhiteNote(note).Letter, WhiteNote.F);
Assert.AreEqual(k.GetAccidental(note, 1), Accid.None);
note = NoteScale.ToNumber(NoteScale.Fsharp, 1);
Assert.AreEqual(k.GetWhiteNote(note).Letter, WhiteNote.F);
Assert.AreEqual(k.GetAccidental(note, 1), Accid.Sharp);
Assert.AreEqual(k.GetWhiteNote(note).Letter, WhiteNote.F);
Assert.AreEqual(k.GetAccidental(note, 1), Accid.None);
note = NoteScale.ToNumber(NoteScale.Bflat, 1);
Assert.AreEqual(k.GetWhiteNote(note).Letter, WhiteNote.B);
Assert.AreEqual(k.GetAccidental(note, 1), Accid.Flat);
Assert.AreEqual(k.GetWhiteNote(note).Letter, WhiteNote.B);
Assert.AreEqual(k.GetAccidental(note, 1), Accid.None);
note = NoteScale.ToNumber(NoteScale.A, 1);
Assert.AreEqual(k.GetWhiteNote(note).Letter, WhiteNote.A);
Assert.AreEqual(k.GetAccidental(note, 1), Accid.None);
note = NoteScale.ToNumber(NoteScale.B, 1);
Assert.AreEqual(k.GetWhiteNote(note).Letter, WhiteNote.B);
Assert.AreEqual(k.GetAccidental(note, 1), Accid.Natural);
Assert.AreEqual(k.GetWhiteNote(note).Letter, WhiteNote.B);
Assert.AreEqual(k.GetAccidental(note, 1), Accid.None);
note = NoteScale.ToNumber(NoteScale.Bflat, 1);
Assert.AreEqual(k.GetWhiteNote(note).Letter, WhiteNote.B);
Assert.AreEqual(k.GetAccidental(note, 1), Accid.Flat);
/* F Major, Bflat */
k = new KeySignature(0, 1);
note = NoteScale.ToNumber(NoteScale.G, 1);
Assert.AreEqual(k.GetWhiteNote(note).Letter, WhiteNote.G);
Assert.AreEqual(k.GetAccidental(note, 1), Accid.None);
Assert.AreEqual(k.GetWhiteNote(note).Letter, WhiteNote.G);
Assert.AreEqual(k.GetAccidental(note, 1), Accid.None);
note = NoteScale.ToNumber(NoteScale.Bflat, 1);
Assert.AreEqual(k.GetWhiteNote(note).Letter, WhiteNote.B);
Assert.AreEqual(k.GetAccidental(note, 1), Accid.None);
Assert.AreEqual(k.GetWhiteNote(note).Letter, WhiteNote.B);
Assert.AreEqual(k.GetAccidental(note, 1), Accid.None);
note = NoteScale.ToNumber(NoteScale.B, 1);
Assert.AreEqual(k.GetWhiteNote(note).Letter, WhiteNote.B);
Assert.AreEqual(k.GetAccidental(note, 1), Accid.Natural);
Assert.AreEqual(k.GetWhiteNote(note).Letter, WhiteNote.B);
Assert.AreEqual(k.GetAccidental(note, 1), Accid.None);
note = NoteScale.ToNumber(NoteScale.Bflat, 1);
Assert.AreEqual(k.GetWhiteNote(note).Letter, WhiteNote.B);
Assert.AreEqual(k.GetAccidental(note, 1), Accid.Flat);
Assert.AreEqual(k.GetWhiteNote(note).Letter, WhiteNote.B);
Assert.AreEqual(k.GetAccidental(note, 1), Accid.None);
note = NoteScale.ToNumber(NoteScale.Fsharp, 1);
Assert.AreEqual(k.GetWhiteNote(note).Letter, WhiteNote.F);
Assert.AreEqual(k.GetAccidental(note, 1), Accid.Sharp);
Assert.AreEqual(k.GetWhiteNote(note).Letter, WhiteNote.F);
Assert.AreEqual(k.GetAccidental(note, 1), Accid.None);
note = NoteScale.ToNumber(NoteScale.G, 1);
Assert.AreEqual(k.GetWhiteNote(note).Letter, WhiteNote.G);
Assert.AreEqual(k.GetAccidental(note, 1), Accid.None);
note = NoteScale.ToNumber(NoteScale.F, 1);
Assert.AreEqual(k.GetWhiteNote(note).Letter, WhiteNote.F);
Assert.AreEqual(k.GetAccidental(note, 1), Accid.Natural);
Assert.AreEqual(k.GetWhiteNote(note).Letter, WhiteNote.F);
Assert.AreEqual(k.GetAccidental(note, 1), Accid.None);
note = NoteScale.ToNumber(NoteScale.Fsharp, 1);
Assert.AreEqual(k.GetWhiteNote(note).Letter, WhiteNote.F);
Assert.AreEqual(k.GetAccidental(note, 1), Accid.Sharp);
}
public void TestGetAccidental()
{
int measure = 1;
KeySignature k;
Accid[] expected = new Accid[12];
for (int i = 0; i < 12; i++) {
expected[i] = Accid.None;
}
expected[NoteScale.Bflat] = Accid.Flat;
expected[NoteScale.Csharp] = Accid.Sharp;
expected[NoteScale.Dsharp] = Accid.Sharp;
expected[NoteScale.Fsharp] = Accid.Sharp;
expected[NoteScale.Gsharp] = Accid.Sharp;
/* Test C Major */
k = new KeySignature(0, 0);
measure = 1;
for (int note = 1; note < 128; note++) {
int notescale = NoteScale.FromNumber(note);
Assert.AreEqual(expected[notescale],
k.GetAccidental(note, measure));
measure++;
}
/* Test G major, F# */
k = new KeySignature(1, 0);
measure = 1;
expected[NoteScale.Fsharp] = Accid.None;
expected[NoteScale.F] = Accid.Natural;
for (int note = 1; note < 128; note++) {
int notescale = NoteScale.FromNumber(note);
Assert.AreEqual(expected[notescale],
k.GetAccidental(note, measure));
measure++;
}
/* Test D major, F#, C# */
k = new KeySignature(2, 0);
measure = 1;
expected[NoteScale.Csharp] = Accid.None;
expected[NoteScale.C] = Accid.Natural;
for (int note = 1; note < 128; note++) {
int notescale = NoteScale.FromNumber(note);
Assert.AreEqual(expected[notescale],
k.GetAccidental(note, measure));
measure++;
}
/* Test A major, F#, C#, G# */
k = new KeySignature(3, 0);
measure = 1;
expected[NoteScale.Gsharp] = Accid.None;
expected[NoteScale.G] = Accid.Natural;
for (int note = 1; note < 128; note++) {
int notescale = NoteScale.FromNumber(note);
Assert.AreEqual(expected[notescale],
k.GetAccidental(note, measure));
measure++;
}
/* Test E major, F#, C#, G#, D# */
k = new KeySignature(4, 0);
measure = 1;
expected[NoteScale.Dsharp] = Accid.None;
expected[NoteScale.D] = Accid.Natural;
for (int note = 1; note < 128; note++) {
int notescale = NoteScale.FromNumber(note);
Assert.AreEqual(expected[notescale],
k.GetAccidental(note, measure));
measure++;
}
/* Test B major, F#, C#, G#, D#, A# */
k = new KeySignature(5, 0);
measure = 1;
expected[NoteScale.Asharp] = Accid.None;
expected[NoteScale.A] = Accid.Natural;
for (int note = 1; note < 128; note++) {
int notescale = NoteScale.FromNumber(note);
Assert.AreEqual(expected[notescale],
k.GetAccidental(note, measure));
measure++;
}
for (int i = 0; i < 12; i++) {
expected[i] = Accid.None;
}
expected[NoteScale.Aflat] = Accid.Flat;
expected[NoteScale.Bflat] = Accid.Flat;
expected[NoteScale.Csharp] = Accid.Sharp;
expected[NoteScale.Eflat] = Accid.Flat;
expected[NoteScale.Fsharp] = Accid.Sharp;
/* Test F major, Bflat */
k = new KeySignature(0, 1);
measure = 1;
expected[NoteScale.Bflat] = Accid.None;
expected[NoteScale.B] = Accid.Natural;
for (int note = 1; note < 128; note++) {
int notescale = NoteScale.FromNumber(note);
Assert.AreEqual(expected[notescale],
k.GetAccidental(note, measure));
measure++;
}
/* Test Bflat major, Bflat, Eflat */
k = new KeySignature(0, 2);
measure = 1;
expected[NoteScale.Eflat] = Accid.None;
expected[NoteScale.E] = Accid.Natural;
for (int note = 1; note < 128; note++) {
int notescale = NoteScale.FromNumber(note);
Assert.AreEqual(expected[notescale],
k.GetAccidental(note, measure));
measure++;
}
/* Test Eflat major, Bflat, Eflat, Afat */
k = new KeySignature(0, 3);
measure = 1;
expected[NoteScale.Aflat] = Accid.None;
expected[NoteScale.A] = Accid.Natural;
expected[NoteScale.Dflat] = Accid.Flat;
for (int note = 1; note < 128; note++) {
int notescale = NoteScale.FromNumber(note);
Assert.AreEqual(expected[notescale],
k.GetAccidental(note, measure));
measure++;
}
/* Test Aflat major, Bflat, Eflat, Aflat, Dflat */
k = new KeySignature(0, 4);
measure = 1;
expected[NoteScale.Dflat] = Accid.None;
expected[NoteScale.D] = Accid.Natural;
for (int note = 1; note < 128; note++) {
int notescale = NoteScale.FromNumber(note);
Assert.AreEqual(expected[notescale],
k.GetAccidental(note, measure));
measure++;
}
/* Test Dflat major, Bflat, Eflat, Aflat, Dflat, Gflat */
k = new KeySignature(0, 5);
measure = 1;
expected[NoteScale.Gflat] = Accid.None;
expected[NoteScale.G] = Accid.Natural;
for (int note = 1; note < 128; note++) {
int notescale = NoteScale.FromNumber(note);
Assert.AreEqual(expected[notescale],
k.GetAccidental(note, measure));
measure++;
}
}
public void TestWholeDuration()
{
SheetMusic.SetNoteSize(false);
KeySignature key = new KeySignature(0, 0);
int quarter = 400;
TimeSignature time = new TimeSignature(4, 4, quarter, 60000);
int num1 = WhiteNote.BottomTreble.Number();
MidiNote note1 = new MidiNote(0, 0, num1, quarter*4);
List<MidiNote> notes = new List<MidiNote>(2);
notes.Add(note1);
ChordSymbol chord = new ChordSymbol(notes, key, time, Clef.Treble, null);
Assert.AreEqual(chord.ToString(),
"ChordSymbol clef=Treble start=0 end=1600 width=16 hastwostems=False Note whitenote=F4 duration=Whole leftside=True ");
}
public void TestStemUpBass()
{
SheetMusic.SetNoteSize(false);
KeySignature key = new KeySignature(0, 0);
int quarter = 400;
TimeSignature time = new TimeSignature(4, 4, quarter, 60000);
int num1 = WhiteNote.BottomBass.Number();
int num2 = num1 + 2;
MidiNote note1 = new MidiNote(0, 0, num1, quarter);
MidiNote note2 = new MidiNote(0, 0, num2, quarter);
List<MidiNote> notes = new List<MidiNote>(2);
notes.Add(note1);
notes.Add(note2);
ChordSymbol chord = new ChordSymbol(notes, key, time, Clef.Bass, null);
Assert.AreEqual(chord.ToString(),
"ChordSymbol clef=Bass start=0 end=400 width=16 hastwostems=False Note whitenote=A3 duration=Quarter leftside=True Note whitenote=B3 duration=Quarter leftside=False Stem duration=Quarter direction=1 top=B3 bottom=A3 end=A4 overlap=True side=2 width_to_pair=0 receiver_in_pair=False ");
}
public void TestSixteenthDuration()
{
SheetMusic.SetNoteSize(false);
KeySignature key = new KeySignature(0, 0);
int quarter = 400;
TimeSignature time = new TimeSignature(4, 4, quarter, 60000);
int num1 = WhiteNote.BottomTreble.Number();
MidiNote note1 = new MidiNote(0, 0, num1, quarter/4);
List<MidiNote> notes = new List<MidiNote>(2);
notes.Add(note1);
ChordSymbol chord = new ChordSymbol(notes, key, time, Clef.Treble, null);
Assert.AreEqual(chord.ToString(),
"ChordSymbol clef=Treble start=0 end=100 width=16 hastwostems=False Note whitenote=F4 duration=Sixteenth leftside=True Stem duration=Sixteenth direction=1 top=F4 bottom=F4 end=G5 overlap=False side=2 width_to_pair=0 receiver_in_pair=False ");
Assert.AreEqual(chord.AboveStaff, SheetMusic.NoteHeight);
}
/** Given MusicSymbols for a track, create the staffs for that track.
* Each Staff has a maxmimum width of PageWidth (800 pixels).
* Also, measures should not span multiple Staffs.
*/
private List<Staff> CreateStaffsForTrack(List<MusicSymbol> symbols, int measurelen,
KeySignature key, MidiOptions options,
int track, int totaltracks)
{
int keysigWidth = KeySignatureWidth(key);
int startindex = 0;
List<Staff> thestaffs = new List<Staff>(symbols.Count / 50);
while (startindex < symbols.Count) {
/* startindex is the index of the first symbol in the staff.
* endindex is the index of the last symbol in the staff.
*/
int endindex = startindex;
int width = keysigWidth;
int maxwidth;
/* If we're scrolling vertically, the maximum width is PageWidth. */
if (scrollVert) {
maxwidth = SheetMusic.PageWidth;
}
else {
maxwidth = 2000000;
}
while (endindex < symbols.Count &&
width + symbols[endindex].Width < maxwidth) {
width += symbols[endindex].Width;
endindex++;
}
endindex--;
/* There's 3 possibilities at this point:
* 1. We have all the symbols in the track.
* The endindex stays the same.
*
* 2. We have symbols for less than one measure.
* The endindex stays the same.
*
* 3. We have symbols for 1 or more measures.
* Since measures cannot span multiple staffs, we must
* make sure endindex does not occur in the middle of a
* measure. We count backwards until we come to the end
* of a measure.
*/
if (endindex == symbols.Count - 1) {
/* endindex stays the same */
}
else if (symbols[startindex].StartTime / measurelen ==
symbols[endindex].StartTime / measurelen) {
/* endindex stays the same */
}
else {
int endmeasure = symbols[endindex+1].StartTime/measurelen;
while (symbols[endindex].StartTime / measurelen ==
endmeasure) {
endindex--;
}
}
int range = endindex + 1 - startindex;
if (scrollVert) {
width = SheetMusic.PageWidth;
}
Staff staff = new Staff(symbols.GetRange(startindex, range),
key, options, track, totaltracks);
thestaffs.Add(staff);
startindex = endindex + 1;
}
return thestaffs;
}
public void TestGetSymbols()
{
KeySignature k;
AccidSymbol[] symbols1, symbols2;
k = new KeySignature(0, 0);
symbols1 = k.GetSymbols(Clef.Treble);
symbols2 = k.GetSymbols(Clef.Bass);
Assert.AreEqual(symbols1.Length, 0);
Assert.AreEqual(symbols2.Length, 0);
int[] sharps = new int[] {
WhiteNote.F, WhiteNote.C, WhiteNote.G, WhiteNote.D,
WhiteNote.A, WhiteNote.E
};
for (int sharp = 1; sharp < 7; sharp++) {
k = new KeySignature(sharp, 0);
symbols1 = k.GetSymbols(Clef.Treble);
symbols2 = k.GetSymbols(Clef.Bass);
for (int i = 0; i < sharp; i++) {
Assert.AreEqual(symbols1[i].Note.Letter, sharps[i]);
Assert.AreEqual(symbols2[i].Note.Letter, sharps[i]);
}
}
int[] flats = new int[] {
WhiteNote.B, WhiteNote.E, WhiteNote.A, WhiteNote.D,
WhiteNote.G
};
for (int flat = 1; flat < 6; flat++) {
k = new KeySignature(0, flat);
symbols1 = k.GetSymbols(Clef.Treble);
symbols2 = k.GetSymbols(Clef.Bass);
for (int i = 0; i < flat; i++) {
Assert.AreEqual(symbols1[i].Note.Letter, flats[i]);
Assert.AreEqual(symbols2[i].Note.Letter, flats[i]);
}
}
}
/** Create a new SheetMusic control, using the given midi filename.
* The options can be null.
*/
//public SheetMusic(string filename, MidiOptions options) {
// MidiFile file = new MidiFile(filename);
// init(file, options);
//}
/** Create a new SheetMusic control, using the given raw midi byte[] data.
* The options can be null.
*/
//public SheetMusic(byte[] data, string title, MidiOptions options) {
// MidiFile file = new MidiFile(data, title);
// init(file, options);
// }
/** Create a new SheetMusic control.
* MidiFile is the parsed midi file to display.
* SheetMusic Options are the menu options that were selected.
*
* - Apply all the Menu Options to the MidiFile tracks.
* - Calculate the key signature
* - For each track, create a list of MusicSymbols (notes, rests, bars, etc)
* - Vertically align the music symbols in all the tracks
* - Partition the music notes into horizontal staffs
*/
public void Load(MidiFile file, MidiOptions options)
{
if (options == null) {
options = new MidiOptions(file);
}
zoom = 1.0f;
filename = file.FileName;
SetColors(options.colors, options.shadeColor, options.shade2Color);
pen = new Pen(Color.Black, 1);
List<MidiTrack> tracks = file.ChangeMidiNotes(options);
SetNoteSize(options.largeNoteSize);
scrollVert = options.scrollVert;
showNoteLetters= options.showNoteLetters;
TimeSignature time = file.Time;
if (options.time != null) {
time = options.time;
}
if (options.key == -1) {
mainkey = GetKeySignature(tracks);
}
else {
mainkey = new KeySignature(options.key);
}
numtracks = tracks.Count;
int lastStart = file.EndTime() + options.shifttime;
/* Create all the music symbols (notes, rests, vertical bars, and
* clef changes). The symbols variable contains a list of music
* symbols for each track. The list does not include the left-side
* Clef and key signature symbols. Those can only be calculated
* when we create the staffs.
*/
List<MusicSymbol>[] symbols = new List<MusicSymbol> [ numtracks ];
for (int tracknum = 0; tracknum < numtracks; tracknum++) {
MidiTrack track = tracks[tracknum];
ClefMeasures clefs = new ClefMeasures(track.Notes, time.Measure);
List<ChordSymbol> chords = CreateChords(track.Notes, mainkey, time, clefs);
symbols[tracknum] = CreateSymbols(chords, clefs, time, lastStart);
}
List<LyricSymbol>[] lyrics = null;
if (options.showLyrics) {
lyrics = GetLyrics(tracks);
}
/* Vertically align the music symbols */
SymbolWidths widths = new SymbolWidths(symbols, lyrics);
// SymbolWidths widths = new SymbolWidths(symbols);
AlignSymbols(symbols, widths);
staffs = CreateStaffs(symbols, mainkey, options, time.Measure);
CreateAllBeamedChords(symbols, time);
if (lyrics != null) {
AddLyricsToStaffs(staffs, lyrics);
}
/* After making chord pairs, the stem directions can change,
* which affects the staff height. Re-calculate the staff height.
*/
foreach (Staff staff in staffs) {
staff.CalculateHeight();
}
braces = CreateBraceSymbols(staffs);
BackColor = Color.White;
SetStyle(ControlStyles.UserPaint, true);
SetStyle(ControlStyles.AllPaintingInWmPaint, true); // ��ֹ��������.
SetStyle(ControlStyles.DoubleBuffer, true);
}
/** Create a new SheetMusic control.
* MidiFile is the parsed midi file to display.
* SheetMusic Options are the menu options that were selected.
*
* - Apply all the Menu Options to the MidiFile tracks.
* - Calculate the key signature
* - For each track, create a list of MusicSymbols (notes, rests, bars, etc)
* - Vertically align the music symbols in all the tracks
* - Partition the music notes into horizontal staffs
*/
public void init(MidiFile file, MidiOptions options)
{
if (options == null)
{
options = new MidiOptions(file);
}
zoom = 1.0f;
filename = file.FileName;
SetColors(options.colors, options.shadeColor, options.shade2Color);
pen = new Pen(Color.Black, 1);
List <MidiTrack> tracks = file.ChangeMidiNotes(options);
SetNoteSize(options.largeNoteSize);
scrollVert = options.scrollVert;
showNoteLetters = options.showNoteLetters;
TimeSignature time = file.Time;
if (options.time != null)
{
time = options.time;
}
if (options.key == -1)
{
mainkey = GetKeySignature(tracks);
}
else
{
mainkey = new KeySignature(options.key);
}
numtracks = tracks.Count;
int lastStart = file.EndTime() + options.shifttime;
/* Create all the music symbols (notes, rests, vertical bars, and
* clef changes). The symbols variable contains a list of music
* symbols for each track. The list does not include the left-side
* Clef and key signature symbols. Those can only be calculated
* when we create the staffs.
*/
List <MusicSymbol>[] symbols = new List <MusicSymbol> [numtracks];
for (int tracknum = 0; tracknum < numtracks; tracknum++)
{
MidiTrack track = tracks[tracknum];
ClefMeasures clefs = new ClefMeasures(track.Notes, time.Measure);
List <ChordSymbol> chords = CreateChords(track.Notes, mainkey, time, clefs);
symbols[tracknum] = CreateSymbols(chords, clefs, time, lastStart);
}
List <LyricSymbol>[] lyrics = null;
if (options.showLyrics)
{
lyrics = GetLyrics(tracks);
}
/* Vertically align the music symbols */
SymbolWidths widths = new SymbolWidths(symbols, lyrics);
// SymbolWidths widths = new SymbolWidths(symbols);
AlignSymbols(symbols, widths);
staffs = CreateStaffs(symbols, mainkey, options, time.Measure);
CreateAllBeamedChords(symbols, time);
if (lyrics != null)
{
AddLyricsToStaffs(staffs, lyrics);
}
/* After making chord pairs, the stem directions can change,
* which affects the staff height. Re-calculate the staff height.
*/
foreach (Staff staff in staffs)
{
staff.CalculateHeight();
}
BackColor = Color.White;
SetZoom(1.0f);
}
/** Given all the MusicSymbols for every track, create the staffs
* for the sheet music. There are two parts to this:
*
* - Get the list of staffs for each track.
* The staffs will be stored in trackstaffs as:
*
* trackstaffs[0] = { Staff0, Staff1, Staff2, ... } for track 0
* trackstaffs[1] = { Staff0, Staff1, Staff2, ... } for track 1
* trackstaffs[2] = { Staff0, Staff1, Staff2, ... } for track 2
*
* - Store the Staffs in the staffs list, but interleave the
* tracks as follows:
*
* staffs = { Staff0 for track 0, Staff0 for track1, Staff0 for track2,
* Staff1 for track 0, Staff1 for track1, Staff1 for track2,
* Staff2 for track 0, Staff2 for track1, Staff2 for track2,
* ... }
*/
private List<Staff> CreateStaffs(List<MusicSymbol>[] allsymbols, KeySignature key,
MidiOptions options, int measurelen)
{
List<Staff>[] trackstaffs = new List<Staff>[ allsymbols.Length ];
int totaltracks = trackstaffs.Length;
for (int track = 0; track < totaltracks; track++) {
List<MusicSymbol> symbols = allsymbols[ track ];
trackstaffs[track] = CreateStaffsForTrack(symbols, measurelen, key, options, track, totaltracks);
}
/* Update the EndTime of each Staff. EndTime is used for playback */
foreach (List<Staff> list in trackstaffs) {
for (int i = 0; i < list.Count-1; i++) {
list[i].EndTime = list[i+1].StartTime;
}
}
/* Interleave the staffs of each track into the result array. */
int maxstaffs = 0;
for (int i = 0; i < trackstaffs.Length; i++) {
if (maxstaffs < trackstaffs[i].Count) {
maxstaffs = trackstaffs[i].Count;
}
}
List<Staff> result = new List<Staff>(maxstaffs * trackstaffs.Length);
for (int i = 0; i < maxstaffs; i++) {
foreach (List<Staff> list in trackstaffs) {
if (i < list.Count) {
result.Add(list[i]);
}
}
}
return result;
}
/** Create the "Key Signature" sub-menu.
* Create the sub-menus for changing the key signature.
* The Menu.Tag contains the number of sharps (if positive)
* or the number of flats (if negative) in the key.
*/
void CreateKeySignatureMenu()
{
MenuItem menu;
KeySignature key;
changeKeyMenu = new MenuItem("&Key Signature");
/* Add the default key signature */
menu = new MenuItem("Default", new EventHandler(ChangeKeySignature));
menu.Checked = true;
menu.RadioCheck = true;
menu.Tag = 0;
changeKeyMenu.MenuItems.Add(menu);
/* Add the sharp key signatures */
for (int sharps = 0; sharps <=5; sharps++) {
key = new KeySignature (sharps, 0);
menu = new MenuItem(key.ToString(), new EventHandler(ChangeKeySignature));
menu.Checked = false;
menu.RadioCheck = true;
menu.Tag = sharps;
changeKeyMenu.MenuItems.Add(menu);
}
/* Add the flat key signatures */
for (int flats = 1; flats <=6; flats++) {
key = new KeySignature (0, flats);
menu = new MenuItem(key.ToString(), new EventHandler(ChangeKeySignature));
menu.Checked = false;
menu.RadioCheck = true;
menu.Tag = -flats;
changeKeyMenu.MenuItems.Add(menu);
}
notesMenu.MenuItems.Add(changeKeyMenu);
}