/// <summary>
/// Creates all the <see cref="PieItem"/>s for a single Pie Chart.
/// </summary>
/// <param name="values">
/// double array containing all <see cref="PieItem.Value"/>s for a single PieChart.
/// </param>
/// <param name="labels">
/// string array containing all <see cref="CurveItem.Label"/>s for a single PieChart.
/// </param>
/// <returns>
/// an array containing references to all <see cref="PieItem"/>s comprising the Pie Chart.
/// </returns>
public PieItem[] AddPieSlices(double[] values, string[] labels)
{
PieItem[] slices = new PieItem[values.Length];
for (int x = 0; x < values.Length; x++)
{
slices[x] = new PieItem(values[x], labels[x]);
this.CurveList.Add(slices[x]);
}
return slices;
}
/// <summary>
/// Build the string that will be displayed as the slice label as determined by
/// <see cref="LabelType"/>.
/// </summary>
/// <param name="curve">
/// reference to the <see cref="PieItem"/>
/// </param>
private static void BuildLabelString(PieItem curve)
{
// set up label string formatting
NumberFormatInfo labelFormat = (NumberFormatInfo)NumberFormatInfo.CurrentInfo.Clone();
labelFormat.NumberDecimalDigits = curve._valueDecimalDigits;
labelFormat.PercentPositivePattern = 1; // no space between number and % sign
labelFormat.PercentDecimalDigits = curve._percentDecimalDigits;
switch (curve._labelType)
{
case PieLabelType.Value:
curve._labelStr = curve._pieValue.ToString("F", labelFormat);
break;
case PieLabelType.Percent:
curve._labelStr = (curve._sweepAngle / 360).ToString("P", labelFormat);
break;
case PieLabelType.Name_Value:
curve._labelStr = curve._label._text + ": " + curve._pieValue.ToString("F", labelFormat);
break;
case PieLabelType.Name_Percent:
curve._labelStr = curve._label._text + ": " + (curve._sweepAngle / 360).ToString("P", labelFormat);
break;
case PieLabelType.Name_Value_Percent:
curve._labelStr = curve._label._text + ": " + curve._pieValue.ToString("F", labelFormat) + " ("
+ (curve._sweepAngle / 360).ToString("P", labelFormat) + ")";
break;
case PieLabelType.Name:
curve._labelStr = curve._label._text;
break;
case PieLabelType.None:
default:
break;
}
}
/// <summary>
/// Add a <see cref="PieItem"/> to the display, providing a gradient fill for the pie color.
/// </summary>
/// <param name="value">
/// The value associated with this <see cref="PieItem"/> instance.
/// </param>
/// <param name="color1">
/// The starting display color for the gradient <see cref="Fill"/> for this
/// <see cref="PieItem"/> instance.
/// </param>
/// <param name="color2">
/// The ending display color for the gradient <see cref="Fill"/> for this
/// <see cref="PieItem"/> instance.
/// </param>
/// <param name="fillAngle">
/// The angle for the gradient <see cref="Fill"/>.
/// </param>
/// <param name="displacement">
/// The amount this <see cref="PieItem"/> instance will be displaced from the center point.
/// </param>
/// <param name="label">
/// Text label for this <see cref="PieItem"/> instance.
/// </param>
/// <returns>
/// The <see cref="PieItem"/>.
/// </returns>
public PieItem AddPieSlice(double value, Color color1, Color color2, float fillAngle, double displacement, string label)
{
PieItem slice = new PieItem(value, color1, color2, fillAngle, displacement, label);
this.CurveList.Add(slice);
return slice;
}
/// <summary>
/// Initializes a new instance of the <see cref="PieItem"/> class.
/// The Copy Constructor
/// </summary>
/// <param name="rhs">
/// The <see cref="PieItem"/> object from which to copy
/// </param>
public PieItem(PieItem rhs)
: base(rhs)
{
this._pieValue = rhs._pieValue;
this._fill = rhs._fill.Clone();
this.Border = rhs._border.Clone();
this._displacement = rhs._displacement;
this._labelDetail = rhs._labelDetail.Clone();
this._labelType = rhs._labelType;
this._valueDecimalDigits = rhs._valueDecimalDigits;
this._percentDecimalDigits = rhs._percentDecimalDigits;
}
