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Connected.Components/Components/Chart/Charts/Donut.razor.cs

61 lines
1.2 KiB

using Microsoft.AspNetCore.Components;
namespace Connected.Components;
partial class Donut : Chart
{
[CascadingParameter] public Chart ChartParent { get; set; }
private List<SvgCircle> _circles = new();
private List<SvgLegend> _legends = new();
protected string ParentWidth => ChartParent?.Width;
protected string ParentHeight => ChartParent?.Height;
protected override void OnParametersSet()
{
_circles.Clear();
_legends.Clear();
double counterClockwiseOffset = 25;
double totalPercent = 0;
double offset;
var counter = 0;
foreach (var data in GetNormalizedData())
{
var percent = data * 100;
var reversePercent = 100 - percent;
offset = 100 - totalPercent + counterClockwiseOffset;
totalPercent += percent;
var circle = new SvgCircle()
{
Index = counter,
CX = 21,
CY = 21,
Radius = 15.91549430918954,
StrokeDashArray = $"{ToS(percent)} {ToS(reversePercent)}",
StrokeDashOffset = offset
};
_circles.Add(circle);
var labels = "";
if (counter < InputLabels.Length)
{
labels = InputLabels[counter];
}
var legend = new SvgLegend()
{
Index = counter,
Labels = labels,
Data = data.ToString()
};
_legends.Add(legend);
counter += 1;
}
}
}