refactor: adjust label value of horizontal bar

horizontal_bar_chart.go

@@ -148,25 +148,23 @@ func (h *horizontalBarChart) render(result *defaultRenderResult, seriesList Seri
 			if labelPainter == nil {
 				continue
 			}
-			x := right
-			var fontColor Color
-			if series.Label.Position == PositionLeft {
-				x = 0
-				if isLightColor(fillColor) {
-					fontColor = defaultLightFontColor
-				} else {
-					fontColor = defaultDarkFontColor
-				}
-			}
-			labelPainter.Add(LabelValue{
+			labelValue := LabelValue{
 				Orient: OrientHorizontal,
 				Index:  index,
 				Value:  item.Value,
-				X:         x,
+				X:      right,
 				Y:      y + barHeight>>1,
-				FontColor: fontColor,
 				Offset: series.Label.Offset,
-			})
+			}
+			if series.Label.Position == PositionLeft {
+				labelValue.X = 0
+				if isLightColor(fillColor) {
+					labelValue.FontColor = defaultLightFontColor
+				} else {
+					labelValue.FontColor = defaultDarkFontColor
+				}
+			}
+			labelPainter.Add(labelValue)
 		}
 	}
 	err := doRender(rendererList...)