// 绘制和弦
private void DrawChord()
{
bool leftOrRight = _note.IsUpOrDown();
int headPosition = Start;
int lastPosition = 0;
// int chordPaintNum = 0;
// 绘制和弦中的其他乐符（最后一个乐符即当前乐符，已经绘制），去掉和弦表中的最后一个乐符
for (int i = 0; i < _note.GetChordList().Count - 1; i++)
{
Note extraNote = _note.GetChordList()[i];
DrawShiftLine(extraNote.GetShift() / ParamsGetter.GetPitchPositionDiff());
int extraDuration = extraNote.GetType();
int extraPosition = extraNote.GetShift() + ParamsGetter.GetStaffCenterPosition();
if (Math.Abs(extraPosition - lastPosition) == ParamsGetter.GetPitchPositionDiff())
{
if (leftOrRight)
{
headPosition += ParamsGetter.GetNoteHeadWidth();
}
else
{
headPosition -= ParamsGetter.GetNoteHeadWidth();
}
leftOrRight = !leftOrRight;
}
if (extraDuration == 1) // 全音符
{
DrawSymbol("\uE12B", headPosition, extraPosition);
continue;
}
else
{
if (extraDuration == 2)
{
DrawSymbol("\uE12C", headPosition, extraPosition);
}
else
{
DrawSymbol("\uE12D", headPosition, extraPosition);
}
}
lastPosition = extraPosition;
int temp;
if (_note.IsUpOrDown())
{
temp = extraPosition + ParamsGetter.GetNoteStemHeight();
}
else
{
temp = extraPosition - ParamsGetter.GetNoteStemHeight();
}
DrawLine(_stemX, extraPosition, _stemX, temp);
}
}
public void Operate()
{
int temp;
Boolean upOrDown = _list[0].GetShift() < 0; // 从五线谱中心往下偏移，说明符干朝上
int stemEnd;
if (upOrDown)
{
temp = GetHighestNote();
stemEnd = temp + _paramsGetter.GetStaffCenterPosition() + _paramsGetter.GetNoteStemHeight();
}
else
{
temp = GetLowestNote();
stemEnd = temp + _paramsGetter.GetStaffCenterPosition() - _paramsGetter.GetNoteStemHeight();
}
foreach (Note note in _list)
{
note.SetEnd(stemEnd);
note.SetUpOrDown(upOrDown);
}
}
// 绘制符干
private void DrawStem()
{
if (_note.IsSlur())
{
DrawLine(_stemX, _stemY, _stemX, _beamY);
}
else
{
if (_note.IsUpOrDown())
{
DrawLine(_stemX, _stemY, _stemX, _stemY + ParamsGetter.GetNoteStemHeight());
}
else
{
DrawLine(_stemX, _stemY, _stemX, _stemY - ParamsGetter.GetNoteStemHeight());
}
}
}
protected override void OnDraw()
{
// 绘制定位线
if (Cursor)
{
int tempStart = Start - 2 + Num * _note.GetSymbolWidth();
DrawLine(tempStart, 0, tempStart, ParamsGetter.GetTotalHeight());
}
// 乐符纵坐标
int yPosition = ParamsGetter.GetStaffCenterPosition() + _note.GetShift();
int shift = _note.GetShift() / ParamsGetter.GetPitchPositionDiff();
// 偏移线，当超过6的时候会画线。传入参数为shift，因为以左下角为原点
DrawShiftLine(shift);
// 绘制变音记号
DrawAccidental(_note.GetAccidental(), yPosition);
if (_note.GetDot() == 1)
{
DrawPoint(Start + ParamsGetter.GetDotePosition(), yPosition);
}
if (Type == 1) // 全音符
{
DrawSymbol("\uE12B", Start, yPosition);
if (_note.HasChord())
{
DrawChord();
}
}
else
{
if (Type == 2) // 二分之一音符
{
DrawSymbol("\uE12C", Start, yPosition);
}
else // 其余的所有
{
DrawSymbol("\uE12D", Start, yPosition);
}
if (_note.IsUpOrDown())
{
_stemX = Start + ParamsGetter.GetNoteRightShift(); // 符干向上时横坐标向右偏移
_stemY = yPosition; // 符干向上时纵坐标与乐符中心纵坐标位置相同
_tailX = Start + ParamsGetter.GetNoteTailUpLandscapeShift();
_tailY = _stemY + ParamsGetter.GetNoteStemHeight() - ParamsGetter.GetNoteTailDownPortraitShift();
}
else
{
_stemX = Start - ParamsGetter.GetNoteLeftShift(); // 符干向下时横坐标向左偏移
_stemY = yPosition - ParamsGetter.GetNoteStemDownShift(); // 符干向下时纵坐标与乐符中心纵坐标位置偏移
_tailX = Start - ParamsGetter.GetNoteTailDownLandscapeShift();
_tailY = _stemY - ParamsGetter.GetNoteStemHeight() + ParamsGetter.GetNoteTailDownPortraitShift();
}
_beamX = _stemX;
_beamY = _note.GetEnd();
if (_note.HasChord())
{
if (_note.IsUpOrDown())
{
int temp = _note.GetShift();
foreach (Note noteChord in _note.GetChordList())
{
if (temp > noteChord.GetShift())
{
temp = noteChord.GetShift();
}
}
_tailY = temp + ParamsGetter.GetNoteStemHeight();
}
DrawChord();
}
DrawStem(); // 画符干
if (_note.IsSlur())
{
DrawBeam(); // 画符杠
}
else
{
DrawTail();
}
}
}
