优化Comment的位置，用Location代替Position

Documentation~/zh/changelog.md

@@ -64,6 +64,7 @@ slug: /changelog
 
 ## master
 
+* (2022.11.27) 优化`Comment`的位置，用`Location代替Position`
 * (2022.11.27) 优化`Tooltip`的`LineStyle`支持设置`Shadow`时的颜色
 * (2022.11.26) 优化`LabelLine`的`symbol`默认不显示
 * (2022.11.26) 修复`LineChart`在`XY`都为数值轴时添加无序数据显示异常的问题

Editor/ChildComponents/CommentItemDrawer.cs

@@ -15,7 +15,7 @@ namespace XCharts.Editor
             {
                 ++EditorGUI.indentLevel;
                 PropertyField(prop, "m_Content");
-                PropertyField(prop, "m_Position");
+                PropertyField(prop, "m_Location");
                 //PropertyField(prop, "m_MarkRect");
                 //PropertyField(prop, "m_MarkStyle");
                 PropertyField(prop, "m_LabelStyle");

Runtime/Component/Comment/Comment.cs

@@ -10,7 +10,7 @@ namespace XCharts.Runtime
     /// </summary>
     [Serializable]
     [ComponentHandler(typeof(CommentHander), true)]
-    public class Comment : MainComponent
+    public class Comment : MainComponent, IPropertyChanged
     {
         [SerializeField] private bool m_Show = true;
         [SerializeField] private LabelStyle m_LabelStyle = new LabelStyle();
@@ -65,5 +65,17 @@ namespace XCharts.Runtime
             }
             return m_MarkStyle;
         }
+
+        /// <summary>
+        /// Callback handling when parameters change.
+        /// |参数变更时的回调处理。
+        /// </summary>
+        public void OnChanged()
+        {
+            foreach (var item in items)
+            {
+                item.location.OnChanged();
+            }
+        }
     }
 }

Runtime/Component/Comment/CommentHander.cs

@@ -12,6 +12,7 @@ namespace XCharts.Runtime
         public override void InitComponent()
         {
             var comment = component;
+            comment.OnChanged();
             comment.painter = null;
             comment.refreshComponent = delegate()
             {
@@ -30,10 +31,12 @@ namespace XCharts.Runtime
                 {
                     var item = comment.items[i];
                     var labelStyle = comment.GetLabelStyle(i);
+                    var labelPos = chart.chartPosition + item.location.GetPosition(chart.chartWidth, chart.chartHeight);
                     var label = ChartHelper.AddChartLabel(s_CommentObjectName + i, commentObj.transform, labelStyle, chart.theme.common,
                         GetContent(item), Color.clear, TextAnchor.MiddleCenter);
                     label.SetActive(comment.show && item.show);
-                    label.SetPosition(item.position + labelStyle.offset);
+                    label.SetPosition(labelPos);
+                    label.text.SetLocalPosition(labelStyle.offset);
                 }
             };
             comment.refreshComponent();

Runtime/Component/Comment/CommentItem.cs

@@ -12,10 +12,11 @@ namespace XCharts.Runtime
     {
         [SerializeField] private bool m_Show = true;
         [SerializeField] private string m_Content = "comment";
-        [SerializeField] private Vector3 m_Position;
         [SerializeField] private Rect m_MarkRect;
         [SerializeField] private CommentMarkStyle m_MarkStyle = new CommentMarkStyle() { show = false };
         [SerializeField] private LabelStyle m_LabelStyle = new LabelStyle() { show = false };
+        [SerializeField] [Since("v3.5.0")]private Location m_Location = new Location() { align = Location.Align.TopLeft, top = 0.125f };
+
 
         /// <summary>
         /// Set this to false to prevent this comment item from showing.
@@ -23,11 +24,6 @@ namespace XCharts.Runtime
         /// </summary>
         public bool show { get { return m_Show; } set { if (PropertyUtil.SetStruct(ref m_Show, value)) SetComponentDirty(); } }
         /// <summary>
-        /// position of comment.
-        /// |注解项的位置坐标。
-        /// </summary>
-        public Vector3 position { get { return m_Position; } set { if (PropertyUtil.SetStruct(ref m_Position, value)) SetComponentDirty(); } }
-        /// <summary>
         /// content of comment.
         /// |注解的文本内容。支持模板参数，可以参考Tooltip的itemFormatter。
         /// </summary>
@@ -51,5 +47,14 @@ namespace XCharts.Runtime
             get { return m_LabelStyle; }
             set { if (PropertyUtil.SetClass(ref m_LabelStyle, value)) SetComponentDirty(); }
         }
+        /// <summary>
+        /// The location of comment.
+        /// |Comment显示的位置。
+        /// </summary>
+        public Location location
+        {
+            get { return m_Location; }
+            set { if (PropertyUtil.SetClass(ref m_Location, value)) SetComponentDirty(); }
+        }
     }
 }