[feature][legend] add new icon type:candlestick

CHANGELOG.md

@@ -58,6 +58,7 @@
 
 ## master
 
+* (2022.08.26) 增加`Legend`新图标类型`Candlestick`
 * (2022.08.26) 优化`CandlestickChart`表现，调整相关的`AddData()`接口参数
 * (2022.08.26) 增加`Tooltip`的`position`参数支持设置移动平台不同的显示位置
 * (2022.08.26) 删除`Tooltip`的`fixedXEnable`和`fixedYEnable`参数

Runtime/Component/Legend/Legend.cs

@@ -43,6 +43,10 @@ namespace XCharts.Runtime
             /// 菱形。
             /// </summary>
             Diamond,
+            /// <summary>
+            /// 烛台（可用于K线图）。
+            /// </summary>
+            Candlestick,
         }
         /// <summary>
         /// Selected mode of legend, which controls whether series can be toggled displaying by clicking legends.

Runtime/Component/Legend/LegendHandler.cs

@@ -196,7 +196,9 @@ namespace XCharts.Runtime
                 if (legend.iconType == Legend.Type.Auto)
                 {
                     var serie = chart.GetSerie(item.legendName);
-                    if (serie != null && serie is Line)
+                    if (serie != null)
+                    {
+                        if (serie is Line || serie is SimplifiedLine)
                         {
                             var sp = new Vector3(rect.center.x - rect.width / 2, rect.center.y);
                             var ep = new Vector3(rect.center.x + rect.width / 2, rect.center.y);
@@ -223,6 +225,7 @@ namespace XCharts.Runtime
                                     break;
                             }
                         }
+                    }
                     else
                     {
                         iconType = Legend.Type.Rect;
@@ -249,6 +252,12 @@ namespace XCharts.Runtime
                     case Legend.Type.Triangle:
                         UGL.DrawTriangle(vh, rect.center, 1.2f * radius, color);
                         break;
+                    case Legend.Type.Candlestick:
+                        UGL.DrawRoundRectangle(vh, rect.center, rect.width / 2, rect.height / 2, color, color,
+                            0, null, false, 0.5f);
+                        UGL.DrawLine(vh, new Vector3(rect.center.x, rect.center.y - rect.height / 2),
+                            new Vector3(rect.center.x, rect.center.y + rect.height / 2), 1, color);
+                        break;
                 }
             }
         }