protected override void CreateEmptyOption()
{
if (emptyOption != null)
{
return;
}
UIDoughnutOption option = new UIDoughnutOption();
option.Title = new UITitle();
option.Title.Text = "SunnyUI";
option.Title.SubText = "DoughnutChart";
var series = new UIDoughnutSeries();
series.Name = "饼状图";
series.Center = new UICenter(50, 55);
series.Radius.Inner = 40;
series.Radius.Outer = 70;
for (int i = 0; i < 5; i++)
{
series.AddData("Data" + i, (i + 1) * 20);
}
option.Series.Add(series);
emptyOption = option;
}
protected override void CalcData(UIOption option)
{
Angles.Clear();
UIDoughnutOption o = (UIDoughnutOption)option;
if (o == null || o.Series == null || o.Series.Count == 0)
{
return;
}
for (int pieIndex = 0; pieIndex < o.Series.Count; pieIndex++)
{
var pie = o.Series[pieIndex];
Angles.TryAdd(pieIndex, new ConcurrentDictionary <int, Angle>());
double all = 0;
foreach (var data in pie.Data)
{
all += data.Value;
}
if (all.IsZero())
{
return;
}
float start = 0;
for (int i = 0; i < pie.Data.Count; i++)
{
float angle = (float)(pie.Data[i].Value * 360.0f / all);
float percent = (float)(pie.Data[i].Value * 100.0f / all);
string text = "";
if (o.ToolTip != null)
{
try
{
UITemplate template = new UITemplate(o.ToolTip.Formatter);
template.Set("a", pie.Name);
template.Set("b", pie.Data[i].Name);
template.Set("c", pie.Data[i].Value.ToString(o.ToolTip.ValueFormat));
template.Set("d", percent.ToString("F2"));
text = template.Render();
}
catch
{
text = pie.Data[i].Name + " : " + pie.Data[i].Value.ToString("F2") + "(" + percent.ToString("F2") + "%)";
if (pie.Name.IsValid())
{
text = pie.Name + '\n' + text;
}
}
}
Angle pieAngle = new Angle(start, angle, text);
GetSeriesRect(pie, ref pieAngle);
Angles[pieIndex].AddOrUpdate(i, pieAngle);
start += angle;
}
}
}