private void setLegendStyle(StackColumnType type)
{
if (type == StackColumnType.Comparison)
{
this.stackcolumn.Legends[0].LegendStyle = LegendStyle.Column;
}
else if (type == StackColumnType.TimeSeries)
{
this.stackcolumn.Legends[0].LegendStyle = LegendStyle.Row;
}
}
/// <summary>
/// Initialize the bars.
/// </summary>
/// <param name="series">The number of series to include in the bar chart</param>
/// <param name="type">The type of time series chart</param>
/// <param name="barcolors">The colors to use for the series. The number of colors given must corresponds to the number of series</param>
/// <param name="barHatchStyles">The hatchstyles to use for the series. The number of styles given must corresponds to the number of series</param>
/// <param name="legendTexts">The texts to be shown in the legends. If null, no legends will be shown</paparam>
/// <param name="unitCode">The unit code corresponding to the y-axis</param>
public void Initialize(int series, StackColumnType type, string unitCode, Color[] barColors, ChartHatchStyle[] barHatchStyles, string[] legendTexts)
{
if (series != barColors.Length)
{
throw (new ArgumentException("number of colors must correspond to the number of series"));
}
if (series != barHatchStyles.Length)
{
throw (new ArgumentException("number of hatch styles must correspond to the number of series"));
}
if (legendTexts != null && series != legendTexts.Length)
{
throw (new ArgumentException("number of legend tetxs must correspond to the number of series"));
}
//set in view state
this.Type = type;
setAxisYTitle(LOVResources.UnitName(unitCode));
setFont();
setLegendStyle(type);
//add series and legends
this.stackcolumn.Series.Clear();
this.stackcolumn.Legends[0].CustomItems.Clear();
for (int i = 0; i < series; i++)
{
Series bar = this.stackcolumn.Series.Add(i.ToString());
bar.ChartType = SeriesChartType.StackedColumn;
bar.Color = barColors[i];
bar.IsVisibleInLegend = false; //use custom legends instead.
bar.BackHatchStyle = barHatchStyles[i];
if (legendTexts != null)
{
LegendItem item = new LegendItem();
item.Name = legendTexts[i];
item.SeriesName = legendTexts[i];
item.BorderColor = Color.Black;
item.Color = bar.Color;
item.BackHatchStyle = bar.BackHatchStyle;
item.ImageStyle = LegendImageStyle.Rectangle;
this.stackcolumn.Legends[0].CustomItems.Add(item);
}
}
this.stackcolumn.Legends[0].CustomItems.Reverse();
}
private void setXaxis(IEnumerable <TimeSeriesUtils.BarData> bars)
{
StackColumnType type = Type;
Axis axisX = this.stackcolumn.ChartAreas[0].AxisX;
int startYear = bars.Min(b => b.Year);
int endYear = bars.Max(b => b.Year);
double interval = 1; //default
if (type == StackColumnType.Comparison)
{
if (startYear != endYear)
{
interval = endYear - startYear;
}
}
double offset = endYear != startYear ? interval / 2 : interval - 0.001;
axisX.Interval = interval;
axisX.Minimum = startYear - offset;
axisX.Maximum = endYear + offset;
axisX.IntervalOffset = offset;
foreach (var bar in bars)
{
int year = bar.Year;
CustomLabel label = new CustomLabel();
label.FromPosition = year - offset; //avoid precision problems
label.ToPosition = year + offset; //avoid precision problems
label.Text = year.ToString();
axisX.CustomLabels.Add(label);
}
}
