/// <summary>
/// Draw all the <see cref="OHLCBar"/>'s to the specified <see cref="Graphics"/>
/// device as a candlestick at each defined point.
/// </summary>
/// <param name="g">
/// A graphic device object to be drawn into. This is normally e.Graphics from the PaintEventArgs argument to the Paint() method.
/// </param>
/// <param name="pane">
/// A reference to the <see cref="GraphPane"/> object that is the parent or owner of this object.
/// </param>
/// <param name="curve">
/// A <see cref="OHLCBarItem"/> object representing the
/// <see cref="OHLCBar"/>'s to be drawn.
/// </param>
/// <param name="baseAxis">
/// The <see cref="Axis"/> class instance that defines the base (independent) axis for the <see cref="OHLCBar"/>
/// </param>
/// <param name="valueAxis">
/// The <see cref="Axis"/> class instance that defines the value (dependent) axis for the <see cref="OHLCBar"/>
/// </param>
/// <param name="scaleFactor">
/// The scaling factor to be used for rendering objects. This is calculated and passed down by the parent <see cref="GraphPane"/> object using the
/// <see cref="PaneBase.CalcScaleFactor"/> method, and is used to proportionally adjust font sizes, etc. according to the actual size of the graph.
/// </param>
public void Draw(Graphics g, GraphPane pane, OHLCBarItem curve, Axis baseAxis, Axis valueAxis, float scaleFactor)
{
// ValueHandler valueHandler = new ValueHandler( pane, false );
float pixBase, pixHigh, pixLow, pixOpen, pixClose;
if (curve.Points != null)
{
// float halfSize = _size * scaleFactor;
float halfSize = this.GetBarWidth(pane, baseAxis, scaleFactor);
using (Pen pen = !curve.IsSelected ? new Pen(this._color, this._width) : new Pen(Selection.Border.Color, Selection.Border.Width))
{
// using ( Pen pen = new Pen( _color, _penWidth ) )
// Loop over each defined point
for (int i = 0; i < curve.Points.Count; i++)
{
PointPair pt = curve.Points[i];
double date = pt.X;
double high = pt.Y;
double low = pt.Z;
double open = PointPairBase.Missing;
double close = PointPairBase.Missing;
if (pt is StockPt)
{
open = (pt as StockPt).Open;
close = (pt as StockPt).Close;
}
// Any value set to double max is invalid and should be skipped
// This is used for calculated values that are out of range, divide
// by zero, etc.
// Also, any value <= zero on a log scale is invalid
if (!curve.Points[i].IsInvalid3D && (date > 0 || !baseAxis._scale.IsLog) && ((high > 0 && low > 0) || !valueAxis._scale.IsLog))
{
pixBase = (int)(baseAxis.Scale.Transform(curve.IsOverrideOrdinal, i, date) + 0.5);
// pixBase = baseAxis.Scale.Transform( curve.IsOverrideOrdinal, i, date );
pixHigh = valueAxis.Scale.Transform(curve.IsOverrideOrdinal, i, high);
pixLow = valueAxis.Scale.Transform(curve.IsOverrideOrdinal, i, low);
if (PointPairBase.IsValueInvalid(open))
{
pixOpen = float.MaxValue;
}
else
{
pixOpen = valueAxis.Scale.Transform(curve.IsOverrideOrdinal, i, open);
}
if (PointPairBase.IsValueInvalid(close))
{
pixClose = float.MaxValue;
}
else
{
pixClose = valueAxis.Scale.Transform(curve.IsOverrideOrdinal, i, close);
}
if (!curve.IsSelected && this._gradientFill.IsGradientValueType)
{
using (Pen tPen = this.GetPen(pane, scaleFactor, pt))
this.Draw(
g,
pane,
baseAxis is XAxis || baseAxis is X2Axis,
pixBase,
pixHigh,
pixLow,
pixOpen,
pixClose,
halfSize,
tPen);
}
else
{
this.Draw(
g,
pane,
baseAxis is XAxis || baseAxis is X2Axis,
pixBase,
pixHigh,
pixLow,
pixOpen,
pixClose,
halfSize,
pen);
}
}
}
}
}
}
/// <summary>
/// Add a candlestick graph (<see cref="OHLCBarItem"/> object) to the plot with the given data points (<see cref="IPointList"/>) and
/// properties.
/// </summary>
/// <remarks>
/// This is simplified way to add curves without knowledge of the
/// <see cref="CurveList"/> class. An alternative is to use the <see cref="Graph.CurveList"/> Add() method. Note that the <see cref="IPointList"/>
/// should contain <see cref="StockPt"/> objects instead of <see cref="PointPair"/>
/// objects in order to contain all the data values required for this curve type.
/// </remarks>
/// <param name="label">
/// The text label (string) for the curve that will be used as a <see cref="Legend"/> entry.
/// </param>
/// <param name="points">
/// A <see cref="IPointList"/> of double precision value pairs that define the X and Y values for this curve
/// </param>
/// <param name="color">
/// The color to used for the curve line, symbols, etc.
/// </param>
/// <returns>
/// A <see cref="CurveItem"/> class for the newly created curve. This can then be used to access all of the curve properties that are not defined as
/// arguments to the
/// <see cref="AddOHLCBar(string,IPointList,Color)"/> method.
/// </returns>
public OHLCBarItem AddOHLCBar(string label, IPointList points, Color color)
{
OHLCBarItem curve = new OHLCBarItem(label, points, color);
this._curveList.Add(curve);
return curve;
}
/// <summary>
/// Initializes a new instance of the <see cref="OHLCBarItem"/> class.
/// The Copy Constructor
/// </summary>
/// <param name="rhs">
/// The <see cref="OHLCBarItem"/> object from which to copy
/// </param>
public OHLCBarItem(OHLCBarItem rhs)
: base(rhs)
{
this._bar = rhs._bar.Clone();
}