fix(legend): fix legend color with visual encoded on style.stroke

src/component/legend/LegendView.ts

@@ -198,7 +198,7 @@ class LegendView extends ComponentView {
             if (seriesModel) {
                 const data = seriesModel.getData();
                 const style = data.getVisual('style');
-                const color = style.fill;
+                const color = style[data.getVisual('drawType')] || style.fill;
                 const borderColor = style.stroke;
 
                 // Using rect symbol defaultly

test/boxplot.html

@@ -125,7 +125,7 @@ under the License.
                             }
                         ],
                         legend: {
-                            data: ['line', 'line2', 'line3']
+                            left: 'right'
                         },
                         tooltip: {
                             trigger: 'item',
@@ -215,11 +215,6 @@ under the License.
                                     ]
                                 }
 
-                            },
-                            {
-                                name: 'outlier',
-                                type: 'scatter',
-                                data: data.outliers
                             }
                         ]
                     });