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Fix donut chart when there is only one element

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This commit is contained in:
Alejandro Torreblanca 2022-11-30 09:53:02 +01:00
parent c1468e8ae4
commit 6284447d22
1 changed files with 9 additions and 2 deletions
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11
donut_chart.go
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@ -132,9 +132,16 @@ func (pc DonutChart) drawSlices(r Renderer, canvasBox Box, values []Value) {
var lx, ly int
if len(values) == 1 {
pc.styleDonutChartValue(0).WriteToRenderer(r)
v := Value{Value: 100, Label: "center"}
styletemp := pc.SliceStyle.InheritFrom(Style{
StrokeColor: values[0].Style.FillColor, StrokeWidth: 4.0, FillColor: values[0].Style.FillColor, FontColor: values[0].Style.FillColor,
})
v.Style.InheritFrom(styletemp).WriteToRenderer(r)
r.MoveTo(cx, cy)
r.Circle(radius, cx, cy)
r.ArcTo(cx, cy, (radius / 1.25), (radius / 1.25), DegreesToRadians(0), DegreesToRadians(359))
r.LineTo(cx, cy)
r.Close()
r.FillStroke()
} else {
for index, v := range values {
v.Style.InheritFrom(pc.styleDonutChartValue(index)).WriteToRenderer(r)