/// <summary>
/// Create a box-info instance from an existing BarList
/// </summary>
/// <param name="bl">The barlist.</param>
/// <returns>a BoxInfo</returns>
public static BoxInfo FromBarList(BarList bl)
{
BoxInfo bi = new BoxInfo();
if (!bl.HasBar())
{
return(bi);
}
bi.High = BarMath.HH(bl);
bi.Low = BarMath.LL(bl);
bi.Open = bl[0].Open;
return(bi);
}
public Stock ToStock()
{
if (!HasBar())
{
throw new Exception("Can't generate a stock instance from an empty barlist!");
}
Stock s = new Stock(Symbol, this.RecentBar.Bardate);
s.DayHigh = BarMath.HH(this);
s.DayLow = BarMath.LL(this);
s.DayOpen = this[0].Open;
s.DayClose = this.RecentBar.Close;
return(s);
}
void Chart_Paint(object sender, PaintEventArgs e)
{
if (bl != null)
{
highesth = BarMath.HH(bl);
lowestl = BarMath.LL(bl);
barc = bl.Count;
}
if ((bl == null) || (bl.Count == 0))
{
return;
}
Text = Title;
r = ClientRectangle;
pixperbar = (((decimal)r.Width - (decimal)border - ((decimal)border / 3)) / (decimal)barc);
pixperdollar = (((decimal)r.Height - (decimal)border * 2) / (highesth - lowestl));
Pen p = new Pen(Color.Black);
g = e.Graphics;
Form f = (Form)sender;
g.Clear(f.BackColor);
Color fgcol = (f.BackColor == Color.Black) ? Color.White : Color.Black;
// x-axis
g.DrawLine(new Pen(fgcol), (int)(border / 3), r.Height - border, r.Width - border, r.Height - border);
// y-axis
g.DrawLine(new Pen(fgcol), r.Width - border, r.Y + border, r.Width - border, r.Height - border);
const int minxlabelwidth = 15;
int lastlabelcoord = -500;
for (int i = 0; i < barc; i++)
{
Color bcolor = (bl.Get(i).Close > bl.Get(i).Open) ? Color.Green : Color.Red;
p = new Pen(bcolor);
// draw high/low bar
g.DrawLine(p, getX(i), getY(bl.Get(i).Low), getX(i), getY(bl.Get(i).High));
// draw open bar
g.DrawLine(p, getX(i), getY(bl.Get(i).Open), getX(i) - (int)(pixperbar / 3), getY(bl.Get(i).Open));
// draw close bar
g.DrawLine(p, getX(i), getY(bl.Get(i).Close), getX(i) + (int)(pixperbar / 3), getY(bl.Get(i).Close));
// draw time labels (time @30min and date@noon)
if (bl.Int != BarInterval.Day)
{
if ((i % 6) == 0)
{
g.DrawString(bl.Get(i).Bartime.ToString(), f.Font, new SolidBrush(fgcol), getX(i), r.Height - (f.Font.GetHeight() * 3));
}
if (bl.Get(i).Bartime == 1200)
{
g.DrawString(bl.Get(i).Bardate.ToString(), f.Font, new SolidBrush(fgcol), getX(i), r.Height - (float)(f.Font.GetHeight() * 1.5));
}
}
else
{
int[] date = BarMath.Date(bl.Get(i).Bardate);
int[] lastbardate = date;
if ((i - 1) > 0)
{
lastbardate = BarMath.Date(bl.Get(i - 1).Bardate);
}
if ((getX(lastlabelcoord) + minxlabelwidth) <= getX(i))
{
lastlabelcoord = i;
g.DrawString(date[2].ToString(), f.Font, new SolidBrush(fgcol), getX(i), r.Height - (f.Font.GetHeight() * 3));
}
if ((i == 0) || (lastbardate[1] != date[1]))
{
string ds = date[1].ToString();
if ((i == 0) || (lastbardate[0] != date[0]))
{
ds += '/' + date[0].ToString();
}
g.DrawString(ds, f.Font, new SolidBrush(fgcol), getX(i), r.Height - (float)(f.Font.GetHeight() * 1.5));
}
}
}
// DRAW YLABELS
// max number of even intervaled ylabels possible on yaxis
int numlabels = (int)((r.Height - border * 2) / (f.Font.GetHeight() * 1.5));
// nearest price units giving "pretty" even intervaled ylabels
decimal priceunits = NearestPrettyPriceUnits(highesth - lowestl, numlabels);
// starting price point from low end of range, including lowest low in barlist
decimal lowstart = lowestl - ((lowestl * 100) % (priceunits * 100)) / 100;
// original "non-pretty" price units calc
//decimal priceunits = (highesth-lowestl)/numlabels;
Pen priceline = new Pen(Color.BlueViolet);
priceline.DashStyle = System.Drawing.Drawing2D.DashStyle.Dot;
for (decimal i = 0; i <= numlabels; i++)
{
decimal price = lowstart + (i * priceunits);
g.DrawString(price.ToString("C"), f.Font, new SolidBrush(fgcol), r.Width - border, getY(price) - f.Font.GetHeight());
g.DrawLine(priceline, border / 3, getY(price), r.Width - border, getY(price));
}
DrawLabels();
}
