修复线段标签背景修改无效的问提

src/Obj/Base/PolylineObject/index.js

@@ -825,7 +825,6 @@ class PolylineObject extends Base {
   set labelLineColor(v) {
     this.options.label.lineColor = v
     this.label.lineColor = v
-    let _this = this
     if (this._elms.labelLineColor) {
       this._elms.labelLineColor.forEach((item, i) => {
         let lineColorPicker = new YJColorPicker({
@@ -840,6 +839,29 @@ class PolylineObject extends Base {
           }, //点击确认按钮事件回调
           clear: () => {
             this.labelLineColor = 'rgba(0,255,255,0.5)'
+          } //点击清空按钮事件回调
+        })
+        this._elms.labelLineColor[i] = lineColorPicker
+      })
+    }
+  }
+
+  get labelBackgroundColorStart() {
+    return this.options.label.backgroundColor[0]
+  }
+  set labelBackgroundColorStart(v) {
+    this.options.label.backgroundColor[0] = v
+    this.label.backgroundColor = [v, this.label.backgroundColor[1]]
+    if (this._elms.labelBackgroundColorStart) {
+      this._elms.labelBackgroundColorStart.forEach((item, i) => {
+        let labelBackgroundColorStartPicker = new YJColorPicker({
+          el: item.el,
+          size: 'mini', //颜色box类型
+          alpha: true, //是否开启透明度
+          defaultColor: this.labelBackgroundColorStart,
+          disabled: false, //是否禁止打开颜色选择器
+          openPickerAni: 'opacity', //打开颜色选择器动画
+          sure: color => {
             this.labelBackgroundColorStart = color
           }, //点击确认按钮事件回调
           clear: () => {
@@ -848,7 +870,7 @@ class PolylineObject extends Base {
         })
         this._elms.labelBackgroundColorStart[
           i
-        ] = _this.labelBackgroundColorStartPicker
+        ] = labelBackgroundColorStartPicker
       })
     }
   }