protected static void UpdateIndicators(NDocument document)
{
NLineSeries line = (NLineSeries)document.RootPanel.Charts[0].Series[0];
double min = (double)line.Values[line.Values.FindMinValue()];
double max = (double)line.Values[line.Values.FindMaxValue()];
NGaugePanel panel1 = document.RootPanel.ChildPanels[2] as NGaugePanel;
NGaugePanel panel2 = document.RootPanel.ChildPanels[3] as NGaugePanel;
NGaugePanel panel3 = document.RootPanel.ChildPanels[4] as NGaugePanel;
NNeedleValueIndicator minIndicator = panel1.Indicators[1] as NNeedleValueIndicator;
NNeedleValueIndicator maxIndicator = panel2.Indicators[1] as NNeedleValueIndicator;
NNeedleValueIndicator avgIndicator = panel3.Indicators[1] as NNeedleValueIndicator;
minIndicator.Value = min;
maxIndicator.Value = max;
int count = line.Values.Count;
double sum = 0;
for (int i = 0; i < count; i++)
{
sum += (double)line.Values[i];
}
if (count > 0)
{
avgIndicator.Value = sum / count;
}
else
{
avgIndicator.Value = 0;
}
}
void IHttpHandler.ProcessRequest(HttpContext context)
{
int populationDataId;
int dataPointId;
if (context.Request["id"] == null)
{
return;
}
string[] tokens = context.Request["id"].Split(new char[] { ':' }, StringSplitOptions.RemoveEmptyEntries);
if (tokens.Length != 2)
{
return;
}
if (!int.TryParse(tokens[0], out populationDataId))
{
return;
}
if (!int.TryParse(tokens[1], out dataPointId))
{
return;
}
NCustomToolsData.NData data = NCustomToolsData.Read();
MemoryStream ms = new MemoryStream();
NSize chartSize = new NSize(500, 200);
NDocument document = CreateDocument(chartSize, data, populationDataId, dataPointId);
NPngImageFormat imageFormat = new NPngImageFormat();
using (INImage image = CreateImage(document, chartSize, imageFormat))
{
document.Refresh();
image.SaveToStream(ms, imageFormat);
}
byte[] bytes = ms.GetBuffer();
context.Response.ContentType = "image/png";
context.Response.OutputStream.Write(bytes, 0, bytes.Length);
context.Response.Cache.SetCacheability(HttpCacheability.ServerAndPrivate);
}
NDocument CreateDocument(NSize chartSize, NCustomToolsData.NData data, int populationDataId, int dataPointId)
{
NDocument document = new NDocument();
document.RootPanel.Charts.Clear();
// set a chart title
string sex;
string total;
if (populationDataId == data.TotalFemaleData.Id)
{
sex = "Female";
total = string.Format("{0:0,#} +/-{1:0,#}", data.TotalFemaleData.Rows[dataPointId].Value, data.TotalFemaleData.Rows[dataPointId].Error);
}
else
{
sex = "Male";
total = string.Format("{0:0,#} +/-{1:0,#}", data.TotalMaleData.Rows[dataPointId].Value, data.TotalMaleData.Rows[dataPointId].Error);
}
NLabel header = document.RootPanel.Labels.AddHeader(string.Format("{0}, {1}, Population Data per Race<br/><font size='9pt'>Total of All Races: {2}</font>", sex, data.AgeRanges[dataPointId].Title, total));
header.TextStyle.TextFormat = TextFormat.XML;
header.TextStyle.FontStyle = new NFontStyle("Times New Roman", 13, FontStyle.Italic);
header.TextStyle.StringFormatStyle.HorzAlign = HorzAlign.Left;
header.ContentAlignment = ContentAlignment.BottomRight;
header.Location = new NPointL(
new NLength(3, NRelativeUnit.ParentPercentage),
new NLength(3, NRelativeUnit.ParentPercentage));
// add the chart
NCartesianChart chart = new NCartesianChart();
document.RootPanel.Charts.Add(chart);
chart.SetPredefinedChartStyle(PredefinedChartStyle.HorizontalLeft);
chart.Margins = new NMarginsL(9, 40, 9, 9);
chart.Location = new NPointL(
new NLength(0, NRelativeUnit.ParentPercentage),
new NLength(0, NRelativeUnit.ParentPercentage));
chart.Size = new NSizeL(
new NLength(100, NRelativeUnit.ParentPercentage),
new NLength(100, NRelativeUnit.ParentPercentage));
chart.Width = chartSize.Width + 180;
chart.Height = chartSize.Height;
NLinearScaleConfigurator scaleY = chart.Axis(StandardAxis.PrimaryY).ScaleConfigurator as NLinearScaleConfigurator;
scaleY.LabelValueFormatter = new NNumericValueFormatter("0,,.#M");
NOrdinalScaleConfigurator scaleX = new NOrdinalScaleConfigurator();
chart.Axis(StandardAxis.PrimaryX).ScaleConfigurator = scaleX;
scaleX.AutoLabels = false;
scaleX.MajorTickMode = MajorTickMode.CustomTicks;
scaleX.CustomLabelFitModes = new LabelFitMode[] { LabelFitMode.AutoScale };
scaleX.CustomLabelsLevelOffset = new NLength(4);
NBarSeries barSeries = chart.Series.Add(SeriesType.Bar) as NBarSeries;
barSeries.DataLabelStyle.Visible = false;
int length = data.Races.Count;
for (int i = 0; i < length; i++)
{
NCustomToolsData.NRace race = data.Races[i];
double value;
if (populationDataId == race.MaleData.Id)
{
value = race.MaleData.Rows[dataPointId].Value;
}
else
{
value = race.FemaleData.Rows[dataPointId].Value;
}
barSeries.Values.Add(value);
NCustomValueLabel vl = new NCustomValueLabel(i, race.Title);
vl.Style.ContentAlignment = ContentAlignment.MiddleRight;
scaleX.CustomLabels.Add(vl);
}
return(document);
}
protected INImage CreateImage(NDocument document, NSize size, NPngImageFormat imageFormat)
{
INImageFormatProvider imageFormatProvider = new NChartRasterImageFormatProvider(document);
return(imageFormatProvider.ProvideImage(size, NResolution.ScreenResolution, imageFormat));
}
