// for stock price data only.
public bool replaceTable(int index, IStockDataTable table)
{
ChartData tmp = (ChartData)series[index];
if (tmp.style != ChartStyle.STOCKCANDLE)
{
return(false);
}
tmp.replace(this, table);
return(true);
}
private void drawData(Graphics g, ChartData cd, int start, int end)
{
if (cd.style == ChartStyle.STOCKCANDLE)
{
IStockDataTable table = (IStockDataTable)cd.table;
int b = area.XPixelsPerGrids / 2;
using (SolidBrush brush = new SolidBrush(cd.color))
{
using (Pen pen = new Pen(cd.color))
{
for (int x = start; x <= end; x++)
{
IStockPrice price = table[ScaleTypeX, x];
int h = price.end - price.start;
int x2 = area.xpics(x) + b;
if (h > 0)
{
g.DrawLine(pen,
x2, area.ypics(price.high),
x2, area.ypics(price.end));
g.DrawLine(pen,
x2, area.ypics(price.start),
x2, area.ypics(price.low));
g.DrawRectangle(pen, area.rect(x, price.end, 1, h));
}
else
{
g.DrawLine(pen,
x2, area.ypics(price.low),
x2, area.ypics(price.high));
g.FillRectangle(brush, area.rect(x, price.start, 1, -h));
}
} // for(x)
} // using (pen)
} // using (brush)
}
else
{
ILongDataTable table = (ILongDataTable)cd.table;
switch (cd.style)
{
case ChartStyle.COLUMN:
using (Pen pen = new Pen(cd.color))
{
Rectangle[] colm = new Rectangle[end - start + 1];
int i = 0;
for (int x = start; x <= end; x++)
{
Rectangle r = area.rect(x, 0, 1, table[ScaleTypeX, x]);
r.Inflate(-1, 0);
colm[i++] = r;
}
g.DrawRectangles(pen, colm);
break;
}
case ChartStyle.AREA:
using (SolidBrush brush = new SolidBrush(cd.color))
{
Point[] poly = new Point[end - start + 3];
int i = 0;
for (int x = start; x <= end; x++)
{
poly[i++] = area.point(x, table[ScaleTypeX, x]);
}
poly[i++] = area.point(end, 0);
poly[i++] = area.point(start, 0);
g.FillPolygon(brush, poly);
break;
}
case ChartStyle.LINE:
using (Pen pen = new Pen(cd.color))
{
Point[] poly = new Point[end - start + 1];
int i = 0;
for (int x = start; x <= end; x++)
{
poly[i++] = area.point(x, table[ScaleTypeX, x]);
}
g.DrawLines(pen, poly);
break;
}
} // switch
} // else
}
public void addDataSource(IStockDataTable table, Color color)
{
series.Add(new ChartData(this, table, color, ChartStyle.STOCKCANDLE));
}
