增加Ring的avoidLabelOverlap避免文本堆叠的支持 (#247)

Editor/Series/RingEditor.cs

@@ -13,6 +13,7 @@ namespace XCharts.Editor
             PropertyField("m_Gap");
             PropertyField("m_RoundCap");
             PropertyField("m_Clockwise");
+            PropertyField("m_AvoidLabelOverlap");
 
             PropertyField("m_ItemStyle");
             PropertyField("m_Animation");

Runtime/Serie/Ring/RingHandler.cs

@@ -10,7 +10,6 @@ namespace XCharts.Runtime
     [UnityEngine.Scripting.Preserve]
     internal sealed class RingHandler : SerieHandler<Ring>
     {
-
         public override int defaultDimension { get { return 0; } }
 
         public override void Update()
@@ -110,57 +109,6 @@ namespace XCharts.Runtime
             paramList.Add(param);
         }
 
-        public override Vector3 GetSerieDataLabelPosition(SerieData serieData, LabelStyle label)
-        {
-            var labelLine = SerieHelper.GetSerieLabelLine(serie, serieData);
-            var centerRadius = (serieData.context.outsideRadius + serieData.context.insideRadius) / 2;
-            var startAngle = serieData.context.startAngle;
-            var toAngle = serieData.context.toAngle;
-            switch (label.position)
-            {
-                case LabelStyle.Position.Bottom:
-                case LabelStyle.Position.Start:
-                    var px1 = Mathf.Sin(startAngle * Mathf.Deg2Rad) * centerRadius;
-                    var py1 = Mathf.Cos(startAngle * Mathf.Deg2Rad) * centerRadius;
-                    var xDiff = serie.clockwise ? -label.distance : label.distance;
-
-                    if (labelLine != null && labelLine.show)
-                    {
-                        serieData.context.labelLinePosition = serie.context.center + new Vector3(px1, py1) + labelLine.GetStartSymbolOffset();
-                        serieData.context.labelPosition = GetLabelLineEndPosition(serie, serieData, labelLine) + new Vector3(xDiff, 0);
-                    }
-                    else
-                    {
-                        serieData.context.labelLinePosition = serie.context.center + new Vector3(px1 + xDiff, py1);
-                        serieData.context.labelPosition = serieData.context.labelLinePosition;
-                    }
-                    break;
-                case LabelStyle.Position.Top:
-                case LabelStyle.Position.End:
-                    startAngle += serie.clockwise ? -label.distance : label.distance;
-                    toAngle += serie.clockwise ? label.distance : -label.distance;
-                    var px2 = Mathf.Sin(toAngle * Mathf.Deg2Rad) * centerRadius;
-                    var py2 = Mathf.Cos(toAngle * Mathf.Deg2Rad) * centerRadius;
-
-                    if (labelLine != null && labelLine.show)
-                    {
-                        serieData.context.labelLinePosition = serie.context.center + new Vector3(px2, py2) + labelLine.GetStartSymbolOffset();
-                        serieData.context.labelPosition = GetLabelLineEndPosition(serie, serieData, labelLine);
-                    }
-                    else
-                    {
-                        serieData.context.labelLinePosition = serie.context.center + new Vector3(px2, py2);
-                        serieData.context.labelPosition = serieData.context.labelLinePosition;
-                    }
-                    break;
-                default: //LabelStyle.Position.Center
-                    serieData.context.labelLinePosition = serie.context.center + label.offset;
-                    serieData.context.labelPosition = serieData.context.labelLinePosition;
-                    break;
-            }
-            return serieData.context.labelPosition;
-        }
-
         private Vector3 GetLabelLineEndPosition(Serie serie, SerieData serieData, LabelLine labelLine)
         {
             var isRight = !serie.clockwise;
@@ -170,16 +118,22 @@ namespace XCharts.Runtime
             var lineLength2 = ChartHelper.GetActualValue(labelLine.lineLength2, serie.context.outsideRadius);
             var pos1 = serieData.context.labelLinePosition;
             var pos2 = pos1 + new Vector3(Mathf.Cos(rad) * lineLength1, Mathf.Sin(rad) * lineLength1);
-            var pos5 = pos2 + dire * lineLength2;
-            return pos5 + labelLine.GetEndSymbolOffset();
+            var pos5 = labelLine.lineType == LabelLine.LineType.HorizontalLine
+                ? pos1 + dire * (lineLength1 + lineLength2) + labelLine.GetEndSymbolOffset()
+                : pos2 + dire * lineLength2 + labelLine.GetEndSymbolOffset();
+            if (labelLine.lineEndX != 0)
+            {
+                pos5.x = labelLine.lineEndX;
+            }
+            return pos5;
         }
 
         public override void DrawSerie(VertexHelper vh)
         {
             if (!serie.show || serie.animation.HasFadeOut()) return;
+            UpdateRuntimeData();
             var data = serie.data;
             serie.animation.InitProgress(serie.startAngle, serie.startAngle + 360);
-            SerieHelper.UpdateCenter(serie, chart.chartPosition, chart.chartWidth, chart.chartHeight);
             var ringWidth = serie.context.outsideRadius - serie.context.insideRadius;
             var dataChanging = false;
             for (int j = 0; j < data.Count; j++)
@@ -203,18 +157,21 @@ namespace XCharts.Runtime
                 var borderWidth = itemStyle.borderWidth;
                 var borderColor = itemStyle.borderColor;
                 var roundCap = serie.roundCap && insideRadius > 0;
-
-                serieData.context.startAngle = startDegree;
-                serieData.context.toAngle = toDegree;
-                serieData.context.insideRadius = insideRadius;
-                serieData.context.outsideRadius = serieData.radius > 0 ? serieData.radius : outsideRadius;
                 DrawBackground(vh, serie, serieData, j, insideRadius, outsideRadius);
                 UGL.DrawDoughnut(vh, serie.context.center, insideRadius, outsideRadius, itemColor, itemToColor,
                     Color.clear, startDegree, toDegree, borderWidth, borderColor, 0, chart.settings.cicleSmoothness,
                     roundCap, serie.clockwise);
                 DrawCenter(vh, serie, serieData, insideRadius, j == data.Count - 1);
+            }
 
+            for (int j = 0; j < data.Count; j++)
+            {
+                var serieData = data[j];
+                if (!serieData.show) continue;
                 var serieLabel = SerieHelper.GetSerieLabel(serie, serieData);
+                var colorIndex = chart.GetLegendRealShowNameIndex(serieData.legendName);
+                Color32 itemColor, itemToColor;
+                SerieHelper.GetItemColor(out itemColor, out itemToColor, serie, serieData, chart.theme, colorIndex);
                 if (SerieLabelHelper.CanShowLabel(serie, serieData, serieLabel, 0))
                 {
                     DrawRingLabelLine(vh, serie, serieData, itemColor);
@@ -231,6 +188,32 @@ namespace XCharts.Runtime
             }
         }
 
+        private void UpdateRuntimeData()
+        {
+            var data = serie.data;
+            SerieHelper.UpdateCenter(serie, chart.chartPosition, chart.chartWidth, chart.chartHeight);
+            var ringWidth = serie.context.outsideRadius - serie.context.insideRadius;
+            for (int j = 0; j < data.Count; j++)
+            {
+                var serieData = data[j];
+                if (!serieData.show) continue;
+                var outsideRadius = serie.context.outsideRadius - j * (ringWidth + serie.gap);
+                if (outsideRadius < 0) continue;
+                var value = serieData.GetCurrData(0, serie.animation, false, false);
+                var max = serieData.GetLastData();
+                var degree = (float)(360 * value / max);
+                var startDegree = GetStartAngle(serie);
+                var toDegree = GetToAngle(serie, degree);
+                var insideRadius = outsideRadius - ringWidth;
+                serieData.context.startAngle = startDegree;
+                serieData.context.toAngle = toDegree;
+                serieData.context.insideRadius = insideRadius;
+                serieData.context.outsideRadius = serieData.radius > 0 ? serieData.radius : outsideRadius;
+                UpdateLabelPosition(serieData);
+            }
+            AvoidLabelOverlap();
+        }
+
         public override void OnLegendButtonClick(int index, string legendName, bool show)
         {
             if (!serie.IsLegendName(legendName))
@@ -372,6 +355,85 @@ namespace XCharts.Runtime
             return angle;
         }
 
+        private void UpdateLabelPosition(SerieData serieData)
+        {
+            if (serieData.labelObject == null) return;
+            var label = SerieHelper.GetSerieLabel(serie, serieData);
+            var labelLine = SerieHelper.GetSerieLabelLine(serie, serieData);
+            var centerRadius = (serieData.context.outsideRadius + serieData.context.insideRadius) / 2;
+            var startAngle = serieData.context.startAngle;
+            var toAngle = serieData.context.toAngle;
+            switch (label.position)
+            {
+                case LabelStyle.Position.Bottom:
+                case LabelStyle.Position.Start:
+                    var px1 = Mathf.Sin(startAngle * Mathf.Deg2Rad) * centerRadius;
+                    var py1 = Mathf.Cos(startAngle * Mathf.Deg2Rad) * centerRadius;
+                    var xDiff = serie.clockwise ? -label.distance : label.distance;
+
+                    if (labelLine != null && labelLine.show)
+                    {
+                        serieData.context.labelLinePosition = serie.context.center + new Vector3(px1, py1) + labelLine.GetStartSymbolOffset();
+                        serieData.context.labelPosition = GetLabelLineEndPosition(serie, serieData, labelLine) + new Vector3(xDiff, 0);
+                    }
+                    else
+                    {
+                        serieData.context.labelLinePosition = serie.context.center + new Vector3(px1 + xDiff, py1);
+                        serieData.context.labelPosition = serieData.context.labelLinePosition;
+                    }
+                    break;
+                case LabelStyle.Position.Top:
+                case LabelStyle.Position.End:
+                case LabelStyle.Position.Outside:
+                    startAngle += serie.clockwise ? -label.distance : label.distance;
+                    toAngle += serie.clockwise ? label.distance : -label.distance;
+                    var px2 = Mathf.Sin(toAngle * Mathf.Deg2Rad) * centerRadius;
+                    var py2 = Mathf.Cos(toAngle * Mathf.Deg2Rad) * centerRadius;
+
+                    if (labelLine != null && labelLine.show)
+                    {
+                        serieData.context.labelLinePosition = serie.context.center + new Vector3(px2, py2) + labelLine.GetStartSymbolOffset();
+                        serieData.context.labelPosition = GetLabelLineEndPosition(serie, serieData, labelLine);
+                    }
+                    else
+                    {
+                        serieData.context.labelLinePosition = serie.context.center + new Vector3(px2, py2);
+                        serieData.context.labelPosition = serieData.context.labelLinePosition;
+                    }
+                    break;
+                default: //LabelStyle.Position.Center
+                    serieData.context.labelLinePosition = serie.context.center + label.offset;
+                    serieData.context.labelPosition = serieData.context.labelLinePosition;
+                    break;
+            }
+        }
+
+        private void AvoidLabelOverlap()
+        {
+            if (!serie.avoidLabelOverlap) return;
+            serie.context.sortedData.Clear();
+            foreach (var serieData in serie.data)
+            {
+                serie.context.sortedData.Add(serieData);
+            }
+            serie.context.sortedData.Sort(delegate (SerieData a, SerieData b)
+            {
+                if (a == null || b == null) return 0;
+                return a.context.labelPosition.y.CompareTo(b.context.labelPosition.y);
+            });
+            var startY = serie.context.sortedData[0].context.labelPosition.y;
+            for (int i = 1; i < serie.context.sortedData.Count; i++)
+            {
+                var serieData = serie.context.sortedData[i];
+                var fontSize = serieData.labelObject.GetHeight();
+                if (serieData.context.labelPosition.y - startY < fontSize)
+                {
+                    serieData.context.labelPosition.y = startY + fontSize;
+                }
+                startY = serieData.context.labelPosition.y;
+            }
+        }
+
         private void DrawRingLabelLine(VertexHelper vh, Serie serie, SerieData serieData, Color32 defaltColor)
         {
             var serieLabel = SerieHelper.GetSerieLabel(serie, serieData);
@@ -386,11 +448,9 @@ namespace XCharts.Runtime
                 var dire = isRight ? Vector3.right : Vector3.left;
                 var rad = Mathf.Deg2Rad * (isRight ? labelLine.lineAngle : 180 - labelLine.lineAngle);
                 var lineLength1 = ChartHelper.GetActualValue(labelLine.lineLength1, serie.context.outsideRadius);
-                var lineLength2 = ChartHelper.GetActualValue(labelLine.lineLength2, serie.context.outsideRadius);
                 var pos1 = serieData.context.labelLinePosition;
                 var pos2 = pos1 + new Vector3(Mathf.Cos(rad) * lineLength1, Mathf.Sin(rad) * lineLength1);
-                var pos5 = pos2 + dire * lineLength2 + labelLine.GetEndSymbolOffset();
-                serieData.context.labelPosition = pos5;
+                var pos5 = serieData.context.labelPosition;
                 switch (labelLine.lineType)
                 {
                     case LabelLine.LineType.BrokenLine:
@@ -401,8 +461,6 @@ namespace XCharts.Runtime
                             chart.settings.lineSmoothness, UGL.Direction.XAxis);
                         break;
                     case LabelLine.LineType.HorizontalLine:
-                        pos5 = pos1 + dire * (lineLength1 + lineLength2);
-                        serieData.context.labelPosition = pos5;
                         UGL.DrawLine(vh, pos1, pos5, labelLine.lineWidth, color);
                         break;
                 }

Runtime/Serie/Serie.cs

@@ -1463,7 +1463,8 @@ namespace XCharts.Runtime
             serieData.name = name;
             serieData.index = m_Data.Count;
             serieData.id = id;
-            serieData.data = new List<double>() { m_Data.Count, value };
+            serieData.data.Add(m_Data.Count);
+            serieData.data.Add(value);
             AddChildData(parent, serieData);
             return serieData;
         }
@@ -1474,7 +1475,7 @@ namespace XCharts.Runtime
             serieData.name = name;
             serieData.index = m_Data.Count;
             serieData.id = id;
-            serieData.data = new List<double>(value);
+            serieData.data.AddRange(value);
             AddChildData(parent, serieData);
             return serieData;
         }