private LedgerlineBlockMetrics CreateUpperLedgerlineBlock(List<HeadMetrics> topDownHeadsMetrics, float limbLength, float strokeWidth)
{
Debug.Assert(topDownHeadsMetrics != null);
#region upper ledgerline block
float minLeftX = float.MaxValue;
float maxRightX = float.MinValue;
foreach(HeadMetrics head in topDownHeadsMetrics)
{
if(head.OriginY <= _gap * 0.75F)
{
minLeftX = minLeftX < head.LeftStemX ? minLeftX : head.LeftStemX;
maxRightX = maxRightX > head.RightStemX ? maxRightX : head.RightStemX;
}
}
float left = minLeftX - limbLength;
float right = maxRightX + limbLength;
Metrics topHeadMetrics = topDownHeadsMetrics[0];
LedgerlineBlockMetrics upperLedgerlineBlockMetrics = null;
if(topHeadMetrics.OriginY < -(_gap * 0.75F))
{
upperLedgerlineBlockMetrics = new LedgerlineBlockMetrics(left, right, strokeWidth); // contains no ledgerlines
float topLedgerlineY = topHeadMetrics.OriginY;
if((topLedgerlineY % _gap) < 0)
{
topLedgerlineY += (_gap / 2F);
}
for(float y = topLedgerlineY; y < 0; y += _gap)
{
upperLedgerlineBlockMetrics.AddLedgerline(y, _gap);
}
}
#endregion upper ledgerline block
return upperLedgerlineBlockMetrics;
}
private LedgerlineBlockMetrics CreateLowerLedgerlineBlock(List<HeadMetrics> topDownHeadsMetrics, float limbLength, float strokeWidth)
{
Debug.Assert(topDownHeadsMetrics != null);
float minLeftX = float.MaxValue;
float maxRightX = float.MinValue;
foreach(HeadMetrics head in topDownHeadsMetrics)
{
if(head.OriginY >= _gap * _nStafflines)
{
minLeftX = minLeftX < head.LeftStemX ? minLeftX : head.LeftStemX;
maxRightX = maxRightX > head.RightStemX ? maxRightX : head.RightStemX;
}
}
float leftX = minLeftX - limbLength;
float rightX = maxRightX + limbLength;
Metrics bottomHeadMetrics = topDownHeadsMetrics[topDownHeadsMetrics.Count - 1];
LedgerlineBlockMetrics lowerLedgerlineBlockMetrics = null;
if(bottomHeadMetrics.OriginY > (_gap * 4.75))
{
lowerLedgerlineBlockMetrics = new LedgerlineBlockMetrics(leftX, rightX, strokeWidth); // contains no ledgerlines
float bottomLedgerlineY = bottomHeadMetrics.OriginY;
if((bottomLedgerlineY % _gap) > 0)
{
bottomLedgerlineY -= (_gap / 2F);
}
for(float y = (_gap * _nStafflines); y <= bottomLedgerlineY; y += _gap)
{
lowerLedgerlineBlockMetrics.AddLedgerline(y, _gap);
}
}
return lowerLedgerlineBlockMetrics;
}
public RestMetrics(Graphics graphics, RestSymbol rest, float gap, int numberOfStafflines, float ledgerlineStrokeWidth)
: base(rest.DurationClass, true, rest.FontHeight)
{
float dy = 0;
if (numberOfStafflines > 1)
{
dy = gap * (numberOfStafflines / 2);
}
_top = _top + dy;
_bottom += dy;
_originY += dy; // the staffline on which the rest is aligned
_ledgerlineStub = gap * 0.75F;
Move((Left - Right) / 2F, 0F); // centre the glyph horizontally
switch (rest.DurationClass)
{
case DurationClass.breve:
case DurationClass.semibreve:
Move(gap * -0.25F, 0F);
if (numberOfStafflines == 1)
{
Move(0F, gap);
}
_ledgerline = new LedgerlineBlockMetrics(Left - _ledgerlineStub, Right + _ledgerlineStub, ledgerlineStrokeWidth);
_ledgerline.AddLedgerline(_originY - gap, 0F);
_ledgerline.Move(gap * 0.17F, 0F);
_top -= (gap * 1.5F);
break;
case DurationClass.minim:
Move(gap * 0.18F, 0);
_ledgerline = new LedgerlineBlockMetrics(Left - _ledgerlineStub, Right + _ledgerlineStub - (gap * 0.3F), ledgerlineStrokeWidth);
_ledgerline.AddLedgerline(_originY, 0F);
_bottom += (gap * 1.5F);
break;
case DurationClass.quaver:
_top -= gap * 0.5F;
_bottom += gap * 0.5F;
break;
case DurationClass.semiquaver:
_top -= gap * 0.5F;
_bottom += gap * 0.5F;
break;
case DurationClass.threeFlags:
_top -= gap * 0.5F;
_right += gap * 0.2F;
_bottom += gap * 0.5F;
_left -= gap * 0.2F;
break;
case DurationClass.fourFlags:
_top -= gap * 0.5F;
_right += gap * 0.1F;
_bottom += gap * 1.25F;
_left -= gap * 0.1F;
_originY += gap;
break;
case DurationClass.fiveFlags:
_top -= gap * 1.5F;
_right += gap * 0.2F;
_bottom += gap * 1.25F;
_left -= gap * 0.2F;
_originY += gap;
break;
}
}
public RestMetrics(Graphics graphics, RestSymbol rest, float gap, int numberOfStafflines, float ledgerlineStrokeWidth)
: base(rest.DurationClass, true, rest.FontHeight)
{
float dy = 0;
if(numberOfStafflines > 1)
dy = gap * (numberOfStafflines / 2);
_top = _top + dy;
_bottom += dy;
_originY += dy; // the staffline on which the rest is aligned
_ledgerlineStub = gap * 0.75F;
Move((Left - Right) / 2F, 0F); // centre the glyph horizontally
switch(rest.DurationClass)
{
case DurationClass.breve:
case DurationClass.semibreve:
Move(gap * -0.25F, 0F);
if(numberOfStafflines == 1)
Move(0F, gap);
_ledgerline = new LedgerlineBlockMetrics(Left - _ledgerlineStub, Right + _ledgerlineStub, ledgerlineStrokeWidth);
_ledgerline.AddLedgerline(_originY - gap, 0F);
_ledgerline.Move(gap * 0.17F, 0F);
_top -= (gap * 1.5F);
break;
case DurationClass.minim:
Move(gap * 0.18F, 0);
_ledgerline = new LedgerlineBlockMetrics(Left - _ledgerlineStub, Right + _ledgerlineStub - (gap * 0.3F), ledgerlineStrokeWidth);
_ledgerline.AddLedgerline(_originY, 0F);
_bottom += (gap * 1.5F);
break;
case DurationClass.quaver:
_top -= gap * 0.5F;
_bottom += gap * 0.5F;
break;
case DurationClass.semiquaver:
_top -= gap * 0.5F;
_bottom += gap * 0.5F;
break;
case DurationClass.threeFlags:
_top -= gap * 0.5F;
_right += gap * 0.2F;
_bottom += gap * 0.5F;
_left -= gap * 0.2F;
break;
case DurationClass.fourFlags:
_top -= gap * 0.5F;
_right += gap * 0.1F;
_bottom += gap * 1.25F;
_left -= gap * 0.1F;
_originY += gap;
break;
case DurationClass.fiveFlags:
_top -= gap * 1.5F;
_right += gap * 0.2F;
_bottom += gap * 1.25F;
_left -= gap * 0.2F;
_originY += gap;
break;
}
}
public RestMetrics(Graphics graphics, RestSymbol rest, double gap, int numberOfStafflines, double ledgerlineStrokeWidth)
: base(rest.DurationClass, rest.FontHeight, CSSObjectClass.rest)
{
double dy = 0;
if (numberOfStafflines > 1)
{
dy = gap * (numberOfStafflines / 2);
}
_top = _top + dy;
_bottom += dy;
_originY += dy; // the staffline on which the rest is aligned
_ledgerlineStub = gap * 0.75;
Move((Left - Right) / 2, 0F); // centre the glyph horizontally
CSSObjectClass llBlockClass = CSSObjectClass.ledgerlines;
switch (rest.DurationClass)
{
case DurationClass.breve:
case DurationClass.semibreve:
Move(gap * -0.25, 0F);
if (numberOfStafflines == 1)
{
Move(0, gap);
}
_ledgerlineBlockMetrics = new LedgerlineBlockMetrics(Left - _ledgerlineStub, Right + _ledgerlineStub, ledgerlineStrokeWidth, llBlockClass);
_ledgerlineBlockMetrics.AddLedgerline(_originY - gap, 0F);
_ledgerlineBlockMetrics.Move(gap * 0.17, 0F);
_top -= (gap * 1.5F);
break;
case DurationClass.minim:
Move(gap * 0.18, 0);
_ledgerlineBlockMetrics = new LedgerlineBlockMetrics(Left - _ledgerlineStub, Right + _ledgerlineStub - (gap * 0.3F), ledgerlineStrokeWidth, llBlockClass);
_ledgerlineBlockMetrics.AddLedgerline(_originY, 0F);
_bottom += (gap * 1.5F);
break;
case DurationClass.quaver:
_top -= gap * 0.5;
_bottom += gap * 0.5;
break;
case DurationClass.semiquaver:
_top -= gap * 0.5;
_bottom += gap * 0.5;
break;
case DurationClass.threeFlags:
_top -= gap * 0.5;
_right += gap * 0.2;
_bottom += gap * 0.5;
_left -= gap * 0.2;
break;
case DurationClass.fourFlags:
_top -= gap * 0.5;
_right += gap * 0.1;
_bottom += gap * 1.25;
_left -= gap * 0.1;
_originY += gap;
break;
case DurationClass.fiveFlags:
_top -= gap * 1.5;
_right += gap * 0.2;
_bottom += gap * 1.25;
_left -= gap * 0.2;
_originY += gap;
break;
}
}
