WIP charts2 parts 2

pie_chart.go

@@ -105,7 +105,10 @@ func PieChart(c *ui.Context, slices []ChartSlice, opts PieChartOptions) ChartRes
 				mx, my := internal.Polar(cx, cy, (r0+r1)/2+float32(chartBool(r0 == 0))*r1*0.12, (a0+a1)/2)
 				ink := chartInk(k, keys[i].Color)
 				internal.Marker(p, i, mx, my-8, 9, ink)
-				chartText(p, share(i), mx, my+2, size, ink, 0.5, 0)
+				// The percent shows where the ring is wide enough to hold it.
+				if w, _ := p.MeasureText(0, ui.Span{Text: share(i), Size: size}); r1-r0 >= w+6 {
+					chartText(p, share(i), mx, my+2, size, ink, 0.5, 0)
+				}
 			}
 		}
 		if opts.Donut {