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* UIDoughnutChart: 修复数据全为0时报错

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Sunny 2024-05-07 14:16:55 +08:00
parent 06309a546f
commit 1277bad3f5
1 changed files with 34 additions and 18 deletions
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22
SunnyUI/Charts/UIDoughnutChart.cs
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@ -20,6 +20,7 @@
* 2021-07-22: V3.0.5 增加更新数据的方法
* 2022-07-29: V3.2.2 数据显示的小数位数重构调整至Option.DecimalPlaces
* 2023-05-14: V3.3.6 重构DrawString函数
* 2024-05-07: V3.6.6 修复数据全为0时报错
******************************************************************************/
using System;
@ -126,12 +127,11 @@ namespace Sunny.UI
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);
float angle = all.IsZero() ? 0 : (float)(pie.Data[i].Value * 360.0f / all);
float percent = all.IsZero() ? 0 : (float)(pie.Data[i].Value * 100.0f / all);
string text = "";
if (Option.ToolTip != null)
{
@ -166,7 +166,22 @@ namespace Sunny.UI
for (int pieIndex = 0; pieIndex < series.Count; pieIndex++)
{
var pie = series[pieIndex];
if (pie.Data.Count == 0) continue;
double all = 0;
foreach (var data in pie.Data)
{
all += data.Value;
}
if (all.IsZero())
{
Angle angle = Angles[pieIndex][0];
g.DrawEllipse(rectColor, new RectangleF(angle.Center.X - angle.Inner, angle.Center.Y - angle.Inner, angle.Inner * 2, angle.Inner * 2));
g.DrawEllipse(rectColor, new RectangleF(angle.Center.X - angle.Outer, angle.Center.Y - angle.Outer, angle.Outer * 2, angle.Outer * 2));
}
else
{
for (int azIndex = 0; azIndex < pie.Data.Count; azIndex++)
{
Angle angle = Angles[pieIndex][azIndex];
@ -191,6 +206,7 @@ namespace Sunny.UI
}
}
}
}
private readonly ConcurrentDictionary<int, ConcurrentDictionary<int, Angle>> Angles = new ConcurrentDictionary<int, ConcurrentDictionary<int, Angle>>();