增加SerieLabel配置饼图标签，支持Center，inside，Outside等显示位置

Scripts/UI/Internal/BaseChart.cs

@@ -18,6 +18,7 @@ namespace XCharts
     {
         private static readonly string s_TitleObjectName = "title";
         private static readonly string s_LegendObjectName = "legend";
+        private static readonly string s_SerieLabelObjectName = "label";
 
         [SerializeField] protected float m_ChartWidth;
         [SerializeField] protected float m_ChartHeight;
@@ -39,6 +40,7 @@ namespace XCharts
         [NonSerialized] private float m_CheckSerieCount = 0;
         [NonSerialized] private List<string> m_CheckSerieName = new List<string>();
         [NonSerialized] private bool m_RefreshChart = false;
+        [NonSerialized] private bool m_RefreshLabel = false;
 
         protected Vector2 chartAnchorMax { get { return rectTransform.anchorMax; } }
         protected Vector2 chartAnchorMin { get { return rectTransform.anchorMin; } }
@@ -61,11 +63,13 @@ namespace XCharts
             m_CheckTheme = m_ThemeInfo.theme;
             InitTitle();
             InitLegend();
+            InitSerieLabel();
             InitTooltip();
             TransferOldVersionData();
         }
 
-        protected override void Start() {
+        protected override void Start()
+        {
             RefreshChart();
         }
 
@@ -77,6 +81,7 @@ namespace XCharts
             CheckLegend();
             CheckTooltip();
             CheckRefreshChart();
+            CheckRefreshLabel();
         }
 
         protected override void OnEnable()
@@ -248,6 +253,34 @@ namespace XCharts
             }
         }
 
+        private void InitSerieLabel()
+        {
+            ChartHelper.HideAllObject(transform, s_SerieLabelObjectName);
+            var labelObject = ChartHelper.AddObject(s_SerieLabelObjectName, transform, chartAnchorMin,
+                chartAnchorMax, chartPivot, new Vector2(chartWidth, chartHeight));
+            int count = 0;
+            for (int i = 0; i < m_Series.Count; i++)
+            {
+                var serie = m_Series.series[i];
+                if (serie.type != SerieType.Pie) continue;
+                for (int j = 0; j < serie.data.Count; j++)
+                {
+                    var serieData = serie.data[j];
+                    var textName = s_SerieLabelObjectName + "_" + i + "_" + j + "_" + serieData.name;
+                    var color = (serie.label.position == SerieLabel.Position.Inside) ? Color.white :
+                        (Color)m_ThemeInfo.GetColor(count++);
+                    var anchorMin = new Vector2(0.5f, 0.5f);
+                    var anchorMax = new Vector2(0.5f, 0.5f);
+                    var pivot = new Vector2(0.5f, 0.5f);
+                    serieData.label = ChartHelper.AddTextObject(textName, labelObject.transform,
+                        m_ThemeInfo.font, color, TextAnchor.MiddleCenter, anchorMin, anchorMax, pivot,
+                        new Vector2(50, serie.label.fontSize), serie.label.fontSize);
+                    serieData.label.text = serieData.name;
+                    serieData.label.gameObject.SetActive(true);
+                }
+            }
+        }
+
         private void InitTooltip()
         {
             var tooltipObject = ChartHelper.AddObject("tooltip", transform, chartAnchorMin,
@@ -354,14 +387,14 @@ namespace XCharts
             if (!RectTransformUtility.ScreenPointToLocalPointInRectangle(rectTransform,
                 Input.mousePosition, canvas.worldCamera, out local))
             {
-                if(m_Tooltip.IsActive()) RefreshChart();
+                if (m_Tooltip.IsActive()) RefreshChart();
                 m_Tooltip.SetActive(false);
                 return;
             }
             if (local.x < 0 || local.x > chartWidth ||
                 local.y < 0 || local.y > chartHeight)
             {
-                if(m_Tooltip.IsActive()) RefreshChart();
+                if (m_Tooltip.IsActive()) RefreshChart();
                 m_Tooltip.SetActive(false);
                 return;
             }
@@ -384,6 +417,20 @@ namespace XCharts
             }
         }
 
+        protected void CheckRefreshLabel()
+        {
+            if (m_RefreshLabel)
+            {
+                m_RefreshLabel = false;
+                OnRefreshLabel();
+            }
+        }
+
+        protected virtual void OnRefreshLabel()
+        {
+
+        }
+
         protected virtual void OnSizeChanged()
         {
             InitTitle();
@@ -456,6 +503,7 @@ namespace XCharts
             DrawBackground(vh);
             DrawChart(vh);
             DrawTooltip(vh);
+            m_RefreshLabel = true;
         }
 
         protected virtual void DrawChart(VertexHelper vh)

Scripts/UI/Internal/Serie.cs

@@ -39,7 +39,8 @@ namespace XCharts
         [SerializeField] private float[] m_Center = new float[2] { 0.5f, 0.5f };
         [SerializeField] private float[] m_Radius = new float[2] { 0, 80 };
         #endregion
-
+        [SerializeField] private SerieLabel m_Label = new SerieLabel();
+        [SerializeField] private SerieLabel m_HighlightLabel = new SerieLabel();
         [SerializeField] [Range(1, 6)] private int m_ShowDataDimension;
         [SerializeField] private bool m_ShowDataName;
         [FormerlySerializedAs("m_Data")]
@@ -58,7 +59,20 @@ namespace XCharts
         public float space { get { return m_Space; } set { m_Space = value; } }
         public float[] center { get { return m_Center; } set { m_Center = value; } }
         public float[] radius { get { return m_Radius; } set { m_Radius = value; } }
+        /// <summary>
+        /// Text label of graphic element,to explain some data information about graphic item like value, name and so on. 
+        /// 图形上的文本标签，可用于说明图形的一些数据信息，比如值，名称等。
+        /// </summary>
+        public SerieLabel label { get { return m_Label; } set { m_Label = value; } }
+        public SerieLabel highlightLabel { get { return m_HighlightLabel; } set { m_HighlightLabel = value; } }
+        public List<float> yData { get { return m_YData; } }
+        public List<float> xData { get { return m_XData; } }
+        public List<SerieData> data { get { return m_Data; } }
 
+        /// <summary>
+        /// The index of serie,start at 0.
+        /// 系列的索引，从0开始。
+        /// </summary>
         public int index { get; set; }
         /// <summary>
         /// Whether the serie is highlighted.
@@ -66,11 +80,6 @@ namespace XCharts
         /// </summary>
         public bool highlighted { get; set; }
         public int dataCount { get { return m_Data.Count; } }
-
-        public List<float> yData { get { return m_YData; } }
-        public List<float> xData { get { return m_XData; } }
-        public List<SerieData> data { get { return m_Data; } }
-
         public int filterStart { get; set; }
         public int filterEnd { get; set; }
 

Scripts/UI/Internal/SerieData.cs

@@ -1,5 +1,6 @@
 using System.Collections.Generic;
 using UnityEngine;
+using UnityEngine.UI;
 
 namespace XCharts
 {
@@ -36,5 +37,10 @@ namespace XCharts
         /// Whether the data item is highlighted.该数据项是否被高亮，一般由鼠标悬停或图例悬停触发高亮。
         /// </summary>
         public bool highlighted { get; set; }
+        /// <summary>
+        /// the label of data item.该数据项的文本标签。
+        /// </summary>
+        /// <value></value>
+        public Text label { get; set; }
     }
 }

Scripts/UI/Internal/SerieLabel.cs

@@ -0,0 +1,80 @@
+using UnityEngine;
+
+namespace XCharts
+{
+    [System.Serializable]
+    /// <summary>
+    /// Text label of chart, to explain some data information about graphic item like value, name and so on.
+    /// 图形上的文本标签，可用于说明图形的一些数据信息，比如值，名称等。
+    /// </summary>
+    public class SerieLabel
+    {
+        /// <summary>
+        /// The position of label.标签的位置。
+        /// </summary>
+        public enum Position
+        {
+            /// <summary>
+            /// Outside of sectors of pie chart, which relates to corresponding sector through visual guide line.
+            /// 饼图扇区外侧，通过视觉引导线连到相应的扇区。
+            /// </summary>
+            Outside,
+            /// <summary>
+            /// Inside the sectors of pie chart.饼图扇区内部。
+            /// </summary>
+            Inside,
+            /// <summary>
+            /// In the center of pie chart.在饼图中心位置。
+            Center,
+            Top,
+            Left,
+            Right,
+            Bottom,
+        }
+        [SerializeField] private bool m_Show = false;
+        [SerializeField] Position m_Position;
+        [SerializeField] private float m_Distance;
+        [SerializeField] private float m_Rotate;
+        [SerializeField] private Color m_Color;
+        [SerializeField] private int m_FontSize = 18;
+        [SerializeField] private FontStyle m_FontStyle = FontStyle.Normal;
+        [SerializeField] private bool m_Line = true;
+        [SerializeField] private float m_LineWidth = 1.0f;
+        [SerializeField] private float m_LineLength1 = 25f;
+        [SerializeField] private float m_LineLength2 = 15f;
+        /// <summary>
+        /// Whether the label is showed.是否显示文本标签。
+        /// </summary>
+        public bool show { get { return m_Show; } set { m_Show = value; } }
+        /// <summary>
+        /// The position of label.标签的位置。
+        /// </summary>
+        public Position position { get { return m_Position; } set { m_Position = value; } }
+        /// <summary>
+        /// Distance to the host graphic element. Works when position is Top,Left,Right,Bottom.
+        /// 距离图形元素的距离，当position为Top，Left，Right，Bottom时有效。
+        /// </summary>
+        public float distance { get { return m_Distance; } set { m_Distance = value; } }
+        /// <summary>
+        /// Text color,If set as default ,the color will assigned as series color.
+        /// 自定义文字颜色，默认和系列的颜色一致。
+        /// </summary>
+        public Color color { get { return m_Color; } set { m_Color = value; } }
+        /// <summary>
+        /// Rotate label.标签旋转。
+        /// </summary>
+        public float rotate { get { return m_Rotate; } set { m_Rotate = value; } }
+        /// <summary>
+        /// font size.文字的字体大小。
+        /// </summary>
+        public int fontSize { get { return m_FontSize; } set { m_FontSize = value; } }
+        /// <summary>
+        /// font style.文字的字体风格。
+        /// </summary>
+        public FontStyle fontStyle { get { return m_FontStyle; } set { m_FontStyle = value; } }
+        public bool line { get { return m_Line; } set { m_Line = value; } }
+        public float lineWidth { get { return m_LineWidth; } set { m_LineWidth = value; } }
+        public float lineLength1 { get { return m_LineLength1; } set { m_LineLength1 = value; } }
+        public float lineLength2 { get { return m_LineLength2; } set { m_LineLength2 = value; } }
+    }
+}

Scripts/UI/Internal/SerieLabel.cs.meta

@@ -0,0 +1,11 @@
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