Merge branch 'master' into 3.0

Documentation~/en/api.md

@@ -13,6 +13,7 @@ slug: /api
 - [AnimationAddition](#animationaddition)
 - [AnimationChange](#animationchange)
 - [AnimationEasing](#animationeasing)
+- [AnimationExchange](#animationexchange)
 - [AnimationFadeIn](#animationfadein)
 - [AnimationFadeOut](#animationfadeout)
 - [AnimationHiding](#animationhiding)
@@ -70,6 +71,7 @@ slug: /api
 - [ColorUtil](#colorutil)
 - [Comment](#comment)
 - [CommentItem](#commentitem)
+- [CommentLayer](#commentlayer)
 - [CommentMarkStyle](#commentmarkstyle)
 - [ComponentHandlerAttribute](#componenthandlerattribute)
 - [ComponentHelper](#componenthelper)
@@ -157,6 +159,7 @@ slug: /api
 - [MainComponentContext](#maincomponentcontext)
 - [MainComponentHandler](#maincomponenthandler)
 - [MainComponentHandler<T>](#maincomponenthandlert)
+- [MainComponentHandler<Title>](#maincomponenthandlertitle)
 - [MarkArea](#markarea)
 - [MarkAreaData](#markareadata)
 - [MarkAreaType](#markareatype)
@@ -179,6 +182,7 @@ slug: /api
 - [ParallelCoordContext](#parallelcoordcontext)
 - [Pie](#pie)
 - [PieChart](#piechart)
+- [PieType](#pietype)
 - [PolarAxisTheme](#polaraxistheme)
 - [PolarChart](#polarchart)
 - [PolarCoord](#polarcoord)
@@ -255,6 +259,7 @@ slug: /api
 - [ThemeStyle](#themestyle)
 - [ThemeType](#themetype)
 - [Title](#title)
+- [TitleHandler](#titlehandler)
 - [TitleStyle](#titlestyle)
 - [TitleTheme](#titletheme)
 - [Tooltip](#tooltip)
@@ -360,6 +365,14 @@ Options:
 
 - `Linear`: 
 
+## AnimationExchange
+
+class in XCharts.Runtime / Inherits from: [AnimationInfo](#animationinfo)
+
+> Since `v3.15.0`
+
+Data exchange animation. Generally used for animation of data sorting.
+
 ## AnimationFadeIn
 
 class in XCharts.Runtime / Inherits from: [AnimationInfo](#animationinfo)
@@ -386,7 +399,7 @@ Data hiding animation.
 
 ## AnimationInfo
 
-class in XCharts.Runtime / Subclasses: [AnimationFadeIn](#animationfadein),[AnimationFadeOut](#animationfadeout),[AnimationChange](#animationchange),[AnimationAddition](#animationaddition),[AnimationHiding](#animationhiding),[AnimationInteraction](#animationinteraction) 
+class in XCharts.Runtime / Subclasses: [AnimationFadeIn](#animationfadein),[AnimationFadeOut](#animationfadeout),[AnimationChange](#animationchange),[AnimationAddition](#animationaddition),[AnimationHiding](#animationhiding),[AnimationInteraction](#animationinteraction),[AnimationExchange](#animationexchange) 
 
 > Since `v3.8.0`
 
@@ -531,7 +544,7 @@ public float GetWidth(float width)
 
 class in XCharts.Runtime / Inherits from: [ChildComponent](#childcomponent)
 
-the animation of serie. support animation type: fadeIn, fadeOut, change, addition.
+the animation of serie. support animation type: fadeIn, fadeOut, change, addition, exchange.
 
 ### AnimationStyle.addition
 
@@ -548,6 +561,11 @@ Update data animation configuration.
 public bool enable  
 Whether to enable animation.
 
+### AnimationStyle.exchange
+
+public AnimationExchange exchange  
+Exchange animation configuration. Valid in sort bar chart.
+
 ### AnimationStyle.fadeIn
 
 public AnimationFadeIn fadeIn  
@@ -639,6 +657,10 @@ public int GetCurrIndex()
 
 public float GetCurrRate()  
 
+### AnimationStyle.GetExchangeDuration
+
+public float GetExchangeDuration()  
+
 ### AnimationStyle.GetInteractionDuration
 
 public float GetInteractionDuration()  
@@ -789,6 +811,14 @@ class in XCharts.Runtime / Inherits from: [MainComponent](#maincomponent) / Subc
 
 The axis in rectangular coordinate.
 
+### Axis.onLabelClick
+
+public Action<int, string> onLabelClick  
+
+> Since `v3.15.0`
+
+Callback function when click on the label. Parameters: labelIndex, labelName.
+
 ### Axis.AddData
 
 public void AddData(string category)  
@@ -888,7 +918,7 @@ public bool IsLog()
 
 ### Axis.IsNeedShowLabel
 
-public bool IsNeedShowLabel(int index, int total = 0)  
+public bool IsNeedShowLabel(int index, int total = 0, string content = null)  
 
 ### Axis.IsRight
 
@@ -1059,6 +1089,14 @@ class in XCharts / Inherits from: [MainComponentHandler](#maincomponenthandler)
 
 public T component  
 
+### AxisHandler<T>.DrawTop
+
+// public override void DrawTop(VertexHelper vh)  
+
+### AxisHandler<T>.OnPointerClick
+
+public override void OnPointerClick(PointerEventData eventData)  
+
 ## AxisHelper
 
 class in XCharts.Runtime
@@ -1097,7 +1135,7 @@ public static float GetAxisValueDistance(GridCoord grid, Axis axis, float scaleW
 
 ### AxisHelper.GetAxisValueLength
 
-public static float GetAxisValueLength(GridCoord grid, Axis axis, float scaleWidth, double value)  
+public static float GetAxisValueLength(GridCoord grid, Axis axis, float scaleWidth, double value, float gap = 0)  
 获得数值value在坐标轴上对应的长度
 
 ### AxisHelper.GetAxisValuePosition
@@ -1184,7 +1222,7 @@ public override string GetFormatterContent(int labelIndex, int totalIndex, doubl
 
 ### AxisLabel.IsNeedShowLabel
 
-public bool IsNeedShowLabel(int index, int total)  
+public bool IsNeedShowLabel(int index, int total, string content = null)  
 
 ### AxisLabel.SetRelatedText
 
@@ -1674,6 +1712,10 @@ Global parameter setting component.
 
 public ThemeStyle theme  
 
+### BaseChart.topPainter
+
+public Painter topPainter  
+
 ### BaseChart.typeListForComponent
 
 public Dictionary<Type, FieldInfo> typeListForComponent  
@@ -1682,6 +1724,11 @@ public Dictionary<Type, FieldInfo> typeListForComponent
 
 public Dictionary<Type, FieldInfo> typeListForSerie  
 
+### BaseChart.useUtc
+
+public bool useUtc  
+Whether to use UTC time for the chart.
+
 ### BaseChart.AddChartComponent
 
 public MainComponent AddChartComponent(Type type)  
@@ -1938,6 +1985,10 @@ public Color32 GetLegendRealShowNameColor(string name)
 
 public int GetLegendRealShowNameIndex(string name)  
 
+### BaseChart.GetMainAxis
+
+public Axis GetMainAxis()  
+
 ### BaseChart.GetMarkColor
 
 public Color32 GetMarkColor(Serie serie, SerieData serieData)  
@@ -1996,10 +2047,6 @@ public float GetSerieTotalGap<T>(float categoryWidth, float gap, int index
 
 public float GetSerieTotalWidth<T>(float categoryWidth, float gap, int realBarCount, int gridIndex) where T : Serie  
 
-### BaseChart.GetTitlePosition
-
-public Vector3 GetTitlePosition(Title title)  
-
 ### BaseChart.GetVisualMapOfSerie
 
 public VisualMap GetVisualMapOfSerie(Serie serie)  
@@ -2519,6 +2566,10 @@ public string warningInfo
 public string CheckWarning()  
 检测警告信息。
 
+### BaseGraph.GetTitlePosition
+
+public Vector3 GetTitlePosition(Title title)  
+
 ### BaseGraph.LocalPointToScreenPoint
 
 public Vector2 LocalPointToScreenPoint(Vector2 localPoint)  
@@ -2585,11 +2636,6 @@ public void RefreshAllComponent()
 public virtual void RefreshGraph()  
 Redraw graph in next frame.
 
-### BaseGraph.SaveAsImage
-
-public void SaveAsImage(string imageType = "png", string savePath = "")  
-保存图表为图片。
-
 ### BaseGraph.ScreenPointToChartPoint
 
 public bool ScreenPointToChartPoint(Vector2 screenPoint, out Vector2 chartPoint)  
@@ -2847,6 +2893,14 @@ public static string ColorToStr(Color color)
 
 public static string FloatToStr(double value, string numericFormatter = "F", int precision = 0)  
 
+### ChartCached.GetAxisLabelName
+
+public static string GetAxisLabelName(int index)  
+
+### ChartCached.GetComponentObjectName
+
+public static string GetComponentObjectName(MainComponent component)  
+
 ### ChartCached.GetSerieLabelName
 
 public static string GetSerieLabelName(string prefix, int i, int j)  
@@ -2855,17 +2909,25 @@ public static string GetSerieLabelName(string prefix, int i, int j)
 
 public static string GetString(string prefix, int suffix)  
 
+### ChartCached.GetTypeName
+
+public static string GetTypeName(Type type)  
+
+### ChartCached.GetTypeName<T>
+
+public static string GetTypeName<T>()  
+
 ### ChartCached.IntToStr
 
 public static string IntToStr(int value, string numericFormatter = "")  
 
 ### ChartCached.NumberToDateStr
 
-public static string NumberToDateStr(double timestamp, string formatter)  
+public static string NumberToDateStr(double timestamp, string formatter, bool local = false)  
 
 ### ChartCached.NumberToDateTime
 
-public static DateTime NumberToDateTime(double timestamp)  
+public static DateTime NumberToDateTime(double timestamp, bool local = false)  
 
 ### ChartCached.NumberToStr
 
@@ -3111,10 +3173,6 @@ public static void RemoveTMPComponents(GameObject gameObject)
 
 public static Vector3 RotateRound(Vector3 position, Vector3 center, Vector3 axis, float angle)  
 
-### ChartHelper.SaveAsImage
-
-public static Texture2D SaveAsImage(RectTransform rectTransform, Canvas canvas, string imageType = "png", string path = "")  
-
 ### ChartHelper.SetActive
 
 public static bool SetActive(Image image, bool active)  
@@ -3174,6 +3232,10 @@ public float GetTextWidth()
 
 public float GetWidth()  
 
+### ChartLabel.InRect
+
+public bool InRect(Vector2 local)  
+
 ### ChartLabel.IsActiveByScale
 
 public bool IsActiveByScale()  
@@ -3428,13 +3490,20 @@ Convert the html string to color.
 
 class in XCharts.Runtime / Inherits from: [MainComponent](#maincomponent),[IPropertyChanged](#ipropertychanged)
 
-comment of chart.
+> Since `v3.15.0`
+
+comment of chart. Used to annotate special information in the chart.
 
 ### Comment.items
 
 public List<CommentItem> items  
 The items of comment.
 
+### Comment.layer
+
+public CommentLayer layer  
+The layer of comment.
+
 ### Comment.show
 
 public bool show  
@@ -3443,10 +3512,12 @@ Set this to false to prevent the comment from showing.
 ### Comment.GetLabelStyle
 
 public LabelStyle GetLabelStyle(int index)  
+Get the label style of comment item.
 
 ### Comment.GetMarkStyle
 
 public CommentMarkStyle GetMarkStyle(int index)  
+Get the mark style of comment item.
 
 ### Comment.OnChanged
 
@@ -3478,6 +3549,17 @@ the mark rect style.
 public bool show  
 Set this to false to prevent this comment item from showing.
 
+## CommentLayer
+
+class in XCharts.Runtime
+
+The layer of comment.
+
+Options:
+
+- `Lower`: The comment is display under the serie.
+- `Upper`: The comment is display above the serie.
+
 ## CommentMarkStyle
 
 class in XCharts.Runtime / Inherits from: [ChildComponent](#childcomponent)
@@ -3763,17 +3845,17 @@ class in XCharts.Runtime
 
 ### DateTimeUtil.GetDateTime
 
-public static DateTime GetDateTime(double timestamp, bool local = true)  
+public static DateTime GetDateTime(double timestamp, bool local = false)  
 
 ### DateTimeUtil.GetDefaultDateTimeString
 
-public static string GetDefaultDateTimeString(int timestamp, double range = 0)  
+public static string GetDefaultDateTimeString(double timestamp, double range = 0, bool local = false)  
 
 ### DateTimeUtil.GetTimestamp
 
-public static int GetTimestamp(DateTime time, bool local = false)  
+public static double GetTimestamp(DateTime time, bool local = false)  
 
-public static int GetTimestamp(string dateTime, bool local = false)  
+public static double GetTimestamp(string dateTime, bool local = false)  
 
 
 ### DateTimeUtil.IsDateOrTimeRegex
@@ -4683,7 +4765,7 @@ public virtual string GetFormatterContent(int labelIndex, int totalIndex, double
 
 ### LabelStyle.GetFormatterDateTime
 
-public string GetFormatterDateTime(int labelIndex, int totalIndex, double value, double minValue, double maxValue)  
+public string GetFormatterDateTime(int labelIndex, int totalIndex, double value, double minValue, double maxValue, bool local)  
 
 ### LabelStyle.GetOffset
 
@@ -5687,6 +5769,10 @@ class in XCharts.Runtime / Inherits from: [MainComponentHandler](#maincomponenth
 
 public T component  
 
+## MainComponentHandler<Title>
+
+class in  / Subclasses: [TitleHandler](#titlehandler) 
+
 ## MarkArea
 
 class in XCharts.Runtime / Inherits from: [MainComponent](#maincomponent)
@@ -5781,15 +5867,15 @@ public double runtimeValue
 
 class in XCharts.Runtime
 
-标线类型
+Mark line type.
 
 Options:
 
-- `None`: 标线类型
+- `Custom`: Custom. You can customize the xy coordinates or values.
-- `Min`: 最小值。
+- `Min`: Minimum value.
-- `Max`: 最大值。
+- `Max`: Maximum value.
-- `Average`: 平均值。
+- `Average`: Average value.
-- `Median`: 中位数。
+- `Median`: Median.
 
 ## MarqueeStyle
 
@@ -5982,10 +6068,6 @@ class in XCharts.Runtime / Inherits from: [MaskableGraphic](https://docs.unity3d
 
 public int index  
 
-### Painter.onPopulateMesh
-
-public Action<VertexHelper, Painter> onPopulateMesh  
-
 ### Painter.type
 
 public Type type  
@@ -6120,6 +6202,15 @@ default label pie chart.
 public void DefaultRadiusRosePieChart()  
 default rose pie chart.
 
+## PieType
+
+class in XCharts.Runtime
+
+Options:
+
+- `Solid`: solid pie chart - default fill style.
+- `Wireframe`: wireframe pie chart - only show the outline wireframe.
+
 ## PolarAxisTheme
 
 class in XCharts.Runtime / Inherits from: [BaseAxisTheme](#baseaxistheme)
@@ -7141,12 +7232,12 @@ public double GetLastData()
 
 ### SerieData.GetMaxData
 
-public double GetMaxData(bool inverse = false)  
+public double GetMaxData(bool inverse = false, int startDimensionIndex = 0)  
 the maxinum value.
 
 ### SerieData.GetMinData
 
-public double GetMinData(bool inverse = false)  
+public double GetMinData(bool inverse = false, int startDimensionIndex = 0)  
 the mininum value.
 
 ### SerieData.GetMinMaxData
@@ -7257,6 +7348,10 @@ class in XCharts.Runtime
 
 public void Reset()  
 
+### SerieDataContext.UpdateExchangePosition
+
+public void UpdateExchangePosition(ref float x, ref float y, float totalTime)  
+
 ## SerieDataExtraFieldAttribute
 
 class in XCharts.Runtime / Inherits from: [Attribute](https://docs.unity3d.com/ScriptReference/30_search.html?q=attribute)
@@ -7685,6 +7780,10 @@ public override void RefreshLabelInternal()
 
 public override void RefreshLabelNextFrame()  
 
+### SerieHandler<T>.RefreshTitleLabelInternal
+
+public void RefreshTitleLabelInternal()  
+
 ### SerieHandler<T>.RemoveComponent
 
 public override void RemoveComponent()  
@@ -8605,6 +8704,30 @@ public override void ClearComponentDirty()
 
 public void OnChanged()  
 
+## TitleHandler
+
+class in XCharts.Runtime / Inherits from: [MainComponentHandler<Title>](#maincomponenthandlertitle)
+
+### TitleHandler.AddSubTitleLabel
+
+public static ChartLabel AddSubTitleLabel(Transform parent, Title title, ComponentTheme componentTheme, BaseChart chart = null)  
+
+### TitleHandler.AddTitleLabel
+
+public static ChartLabel AddTitleLabel(Transform parent, Title title, ComponentTheme componentTheme, BaseChart chart = null)  
+
+### TitleHandler.AddTitleObject
+
+public static GameObject AddTitleObject(BaseGraph graph, Title title, ComponentTheme componentTheme, int titleSiblingIndex, string objectName = null)  
+
+### TitleHandler.InitComponent
+
+public override void InitComponent()  
+
+### TitleHandler.OnSerieDataUpdate
+
+public override void OnSerieDataUpdate(int serieIndex)  
+
 ## TitleStyle
 
 class in XCharts.Runtime / Inherits from: [LabelStyle](#labelstyle),[ISerieDataComponent](#iseriedatacomponent),[ISerieComponent](#iseriecomponent)

Documentation~/en/changelog.md

@@ -6,6 +6,7 @@ slug: /changelog
 # Changelog
 
 [master](#master)  
+[v3.15.0](#v3150)  
 [v3.14.0](#v3140)  
 [v3.13.0](#v3130)  
 [v3.12.1](#v3121)  
@@ -79,9 +80,62 @@ slug: /changelog
 
 ## master
 
+## v3.15.0
+
+Version Highlights:
+
+* __Enhanced Timeline & Zoom Capabilities__: Added `DataZoom.minZoomRatio` (replacing `minShowNum`), `Chart.useUtc`, and continuous optimization of `Axis Time` performance during zooming and handling of large year ranges.
+* __More Flexible Bar Charts & Axis Configuration__: Added `Axis.mainAxis` to control bar chart orientation, `Serie.ignoreZeroOccupy` to control whether zero-value bars occupy space, and `AxisLine` extension line configurations.
+* __Improved Chart Styling & Interactivity__: Added `Pie.pieType`, `Legend.itemInactiveOpacity`, `Axis.onLabelClick`, `Animation.Exchange`, `LabelStyle.fixedX/fixedY`, and more.
+* __Ongoing Enhancement of Extended UI Components__: Added `Title` and `Viewport` configurations for `UITable`, enhanced `UIStatistic.desc`, and optimized `Comment.layer` and coordinate refresh experience.
+* __Focused Stability & Compatibility Fixes__: Resolved critical issues including `SaveAsImage` being blocked by other components, `Pie` click failures, `TMP` compatibility, `Gantt` time range and year 2038 problem, `MarkArea/GridCoord/Axis` and more.
+
+Changelog Details:
+
+* (2026.03.01) Released version `v3.15.0`
+* (2026.02.26) Added `ignoreZeroOccupy` to `Serie` to set whether zero-value Bars occupy space (#286)
+* (2026.02.26) Fixed `SaveAsImage` not saving correctly when blocked by other components (#337)
+* (2026.02.26) Added `mainAxis` parameter to `Axis` to set the main axis for controlling bar chart orientation (#331)
+* (2026.02.03) Fixed `UITable` `viewport` potentially drawing incorrectly under different anchor points
+* (2026.01.15) Fixed `Pie` click sometimes not responding (#357)
+* (2026.01.08) Added `minZoomRatio` to `DataZoom` to replace the old `minShowNum` (#350)
+* (2025.11.05) Fixed `Axis` `indicatorLabel` not being hideable
+* (2025.11.03) Added `Tooltip` `Title` time formatting via `TitleLabelStyle` `numericFormatter` (#353)
+* (2025.10.30) Added `useUtc` parameter to `Chart` to set whether displayed time uses UTC
+* (2025.10.30) Optimized `Candlestick` support for time axis
+* (2025.10.30) Added support for `ignore` in `Scatter` to skip data points
+* (2025.10.24) Optimized line drawing order for `Sankey`
+* (2025.10.22) Added `pieType` to `Pie` supporting solid pie charts and wireframe handle charts (#349)
+* (2025.09.05) Optimized `MarkLine` performance
+* (2025.09.01) Added `startExtendLength` and `endExtendLength` to `AxisLine` for setting axis line extensions
+* (2025.08.27) Fixed `Serie` `TitleStyle` not refreshing promptly when data changed
+* (2025.05.19) Fixed `Axis` runtime error when `TMP` is enabled
+* (2025.04.25) Fixed `MarkArea` drawing inaccurately when specifying `yValue` or `xValue`
+* (2025.04.17) Added `Title` support for `UITable` to set headers
+* (2025.04.17) Added `Viewport` support for `UITable` to set table viewport margins and borders
+* (2025.04.15) Added `Bar` support for color settings via `VisualMap`
+* (2025.04.14) Added `showZeroLabel` to `AxisLabel` to set whether to display zero tick
+* (2025.04.08) Added `desc` description text setting support for `UIStatistic`
+* (2025.04.07) Fixed `Gantt` chart calculating inaccurate time ranges with multi-dimensional data
+* (2025.04.07) Optimized `Axis` `Time` axis support for Custom and ceilRate settings
+* (2025.04.07) Fixed `GridCoord` covering charts when background color set and Serie Clip enabled
+* (2025.04.07) Fixed `Gantt` chart display errors when year exceeds 2038
+* (2025.04.07) Fixed `Axis` `Time` axis not displaying years beyond 2038
+* (2025.04.06) Fixed `Axis` `Time` axis text display errors when zoomed with `DataZoom`
+* (2025.03.28) Fixed `Pie3D` `avoidLabelOverlap` not working
+* (2025.03.27) Added `itemInactiveOpacity` to `Legend` to set color transparency for inactive states (#343)
+* (2025.03.27) Added `onLabelClick` callback event to `Axis`
+* (2025.03.26) Added `Exchange` sort swap animation to `Animation`
+* (2025.03.22) Added `layer` setting to `Comment`
+* (2025.03.21) Optimized coordinate refresh for `Comment`
+* (2025.03.19) Added `{index}` wildcard support for `Serie` `Label` `formatter`
+* (2025.03.18) Added `TitleStyle` component support for `Bar`
+* (2025.03.18) Added `fixedX` and `fixedY` to `LabelStyle` to fix label coordinates
+* (2025.03.17) Added `backgroundGap` to `ItemStyle` to set data item background gap
+
 ## v3.14.0
 
-**Key Highlights:**
+Version Highlights:
 
 * Added real-time sorting functionality for `Bar`
 * Added support for `\n` line breaks in `itemFormatter` for `Tooltip`
@@ -89,7 +143,7 @@ slug: /changelog
 * Added `speed` to `Animation` to specify animation speed
 * Optimized column alignment in `Tooltip`
 
-**Detailed Changelog:**
+Changelog Details:
 
 * (2025.03.15) Released version `v3.14.0`
 * (2025.03.09) Fixed an issue where `Bar` displayed abnormally when placed in different `Grids` within the same `Chart`
@@ -111,7 +165,7 @@ slug: /changelog
 
 ## v3.13.0
 
-Key Features:
+Version Highlights:
 
 * Added the `UIText` extension component  
 * Added the `UIToggle` extension component  
@@ -121,7 +175,7 @@ Key Features:
 * Added the `size2` parameter to `SymbolStyle` to support rectangular markers  
 * Other optimizations and bug fixes  
 
-Detailed Changelog:
+Changelog Details:
 
 * (2025.01.01) Released `v3.13.0`  
 * (2024.12.27) Added the `size2` parameter to `SymbolStyle` to support rectangular markers  
@@ -168,7 +222,7 @@ Version Highlights:
 * Adjusted and perfected the documentation
 * Other optimizations and fixes
 
-Log Details:
+Changelog Details:
 
 * (2024.09.30) Released version `v3.12.0`
 * (2024.09.27) Improved the `5-minute tutorial`
@@ -201,7 +255,7 @@ Log Details:
 
 ## v3.11.0
 
-Release Highlights:
+Version Highlights:
 
 * Added `Line3DChart` for 3D line charts
 * Added `GraphChart` for relationship graphs

Documentation~/en/configuration.md

@@ -176,6 +176,7 @@ slug: /configuration
 
 - [AnimationAddition](#animationaddition)
 - [AnimationChange](#animationchange)
+- [AnimationExchange](#animationexchange)
 - [AnimationFadeIn](#animationfadein)
 - [AnimationFadeOut](#animationfadeout)
 - [AnimationHiding](#animationhiding)
@@ -234,6 +235,14 @@ class in XCharts.Runtime / Inherits from: [AnimationInfo](#animationinfo)
 
 Data change animation.
 
+## AnimationExchange
+
+class in XCharts.Runtime / Inherits from: [AnimationInfo](#animationinfo)
+
+> Since `v3.15.0`
+
+Data exchange animation. Generally used for animation of data sorting.
+
 ## AnimationFadeIn
 
 class in XCharts.Runtime / Inherits from: [AnimationInfo](#animationinfo)
@@ -260,7 +269,7 @@ Data hiding animation.
 
 ## AnimationInfo
 
-class in XCharts.Runtime / Subclasses: [AnimationFadeIn](#animationfadein), [AnimationFadeOut](#animationfadeout), [AnimationChange](#animationchange), [AnimationAddition](#animationaddition), [AnimationHiding](#animationhiding), [AnimationInteraction](#animationinteraction)
+class in XCharts.Runtime / Subclasses: [AnimationFadeIn](#animationfadein), [AnimationFadeOut](#animationfadeout), [AnimationChange](#animationchange), [AnimationAddition](#animationaddition), [AnimationHiding](#animationhiding), [AnimationInteraction](#animationinteraction), [AnimationExchange](#animationexchange)
 
 > Since `v3.8.0`
 
@@ -326,7 +335,7 @@ the mlvalue of width.
 
 class in XCharts.Runtime / Inherits from: [ChildComponent](#childcomponent)
 
-the animation of serie. support animation type: fadeIn, fadeOut, change, addition.
+the animation of serie. support animation type: fadeIn, fadeOut, change, addition, exchange.
 
 ### AnimationStyle.addition
 
@@ -356,6 +365,12 @@ Options:
 
 Whether to enable animation.
 
+### AnimationStyle.exchange
+
+[AnimationExchange](#animationexchange) `v3.15.0`
+
+Exchange animation configuration. Valid in sort bar chart.
+
 ### AnimationStyle.fadeIn
 
 [AnimationFadeIn](#animationfadein) `v3.8.0`
@@ -603,6 +618,12 @@ Base of logarithm, which is valid only for numeric axes with type: 'Log'.
 
 On the log axis, if base e is the natural number, and is true, logBase fails.
 
+### Axis.mainAxis
+
+`bool` `false` `v3.15.0`
+
+Whether it is the main axis. When both X and Y axes are of the same type, the axis set to main axis will determine the orientation, such as horizontal bar chart and vertical bar chart.
+
 ### Axis.max
 
 `double`
@@ -789,6 +810,12 @@ Whether to display the last label.
 
 Whether to display the first label.
 
+### AxisLabel.showZeroLabel
+
+`bool` `true` `v3.15.0`
+
+Whether to display the zero label.
+
 ### AxisLabel.textLimit
 
 [TextLimit](#textlimit)
@@ -807,6 +834,12 @@ Settings related to axis line.
 
 the arrow of line.
 
+### AxisLine.endExtendLength
+
+`float`
+
+Extend length of the axis line at the end.
+
 ### AxisLine.onZero
 
 `bool`
@@ -819,6 +852,12 @@ When mutiple axes exists, this option can be used to specify which axis can be "
 
 Whether to show the arrow symbol of axis.
 
+### AxisLine.startExtendLength
+
+`float`
+
+Extend length of the axis line at the start.
+
 ## AxisMinorSplitLine
 
 class in XCharts.Runtime / Inherits from: [BaseLine](#baseline)
@@ -1247,7 +1286,9 @@ class in XCharts.Runtime / Subclasses: [AnimationStyle](#animationstyle), [AxisA
 
 class in XCharts.Runtime / Inherits from: [MainComponent](#maincomponent), [IPropertyChanged](#ipropertychanged)
 
-comment of chart.
+> Since `v3.15.0`
+
+comment of chart. Used to annotate special information in the chart.
 
 ### Comment.items
 
@@ -1261,6 +1302,17 @@ The items of comment.
 
 The text style of all comments.
 
+### Comment.layer
+
+[CommentLayer](#commentlayer) `v3.15.0`
+
+The layer of comment.
+
+Options:
+
+- `Lower`: The comment is display under the serie.
+- `Upper`: The comment is display above the serie.
+
 ### Comment.markStyle
 
 [CommentMarkStyle](#commentmarkstyle)
@@ -1470,11 +1522,11 @@ Distance between dataZoom component and the left side of the container. left val
 
 选取框样式。
 
-### DataZoom.minShowNum
+### DataZoom.minZoomRatio
 
-`int` `2`
+`float` `0.2f`
 
-Minimum number of display data. Minimum number of data displayed when DataZoom is enlarged to maximum.
+The minimum zoom ratio of dataZoom. Range 0f-1f.
 
 ### DataZoom.orient
 
@@ -2238,6 +2290,12 @@ class in XCharts.Runtime / Inherits from: [ChildComponent](#childcomponent), [IS
 
 数据项背景颜色。
 
+### ItemStyle.backgroundGap
+
+`float` `v3.15.0`
+
+the gap between background and data item.
+
 ### ItemStyle.backgroundWidth
 
 `float`
@@ -2464,6 +2522,18 @@ the sytle of background.
 
 the distance of label to axis line.
 
+### LabelStyle.fixedX
+
+`float` `0` `v3.15.0`
+
+the fixed x of label. When not 0, it will be fixed on the specified x value.
+
+### LabelStyle.fixedY
+
+`float` `0` `v3.15.0`
+
+the fixed y of label. When not 0, it will be fixed on the specified y value.
+
 ### LabelStyle.formatter
 
 `string`
@@ -2615,6 +2685,12 @@ The distance between each legend, horizontal distance in horizontal layout, and
 
 Image height of legend symbol.
 
+### Legend.itemInactiveOpacity
+
+`float` `1` `v3.15.0`
+
+the opacity of item color when item is inactive.
+
 ### Legend.itemOpacity
 
 `float` `1`
@@ -2690,11 +2766,11 @@ the limit of text.
 
 class in XCharts.Runtime / Inherits from: [ComponentTheme](#componenttheme)
 
-### LegendTheme.unableColor
+### LegendTheme.inactiveColor
 
 `Color`
 
-the color of text.
+the color when the component is inactive.
 
 ## Level
 
@@ -3110,11 +3186,11 @@ Special label types, are used to label maximum value, minimum value and so on.
 
 Options:
 
-- `None`: 标线类型
+- `Custom`: Custom. You can customize the xy coordinates or values.
-- `Min`: 最小值。
+- `Min`: Minimum value.
-- `Max`: 最大值。
+- `Max`: Maximum value.
-- `Average`: 平均值。
+- `Average`: Average value.
-- `Median`: 中位数。
+- `Median`: Median.
 
 ### MarkLineData.xPosition
 
@@ -3303,6 +3379,17 @@ Distance between grid component and the top side of the container.
 
 class in XCharts.Runtime / Inherits from: [Serie](#serie)
 
+### Pie.pieType
+
+[PieType](#pietype) `v3.15.0`
+
+Pie chart type.
+
+Options:
+
+- `Solid`: solid pie chart - default fill style.
+- `Wireframe`: wireframe pie chart - only show the outline wireframe.
+
 ### Pie.radiusGradient
 
 `bool` `false` `v3.8.1`
@@ -3471,13 +3558,13 @@ The width of the bar. Adaptive when default 0.
 
 `float` `2f`
 
-斑马线的间距。
+The gap of zebra bar. It is the distance between two zebra stripes. When the value is 0, there is no gap between stripes.
 
 ### Serie.barZebraWidth
 
 `float` `4f`
 
-斑马线的粗细。
+The width of zebra bar. It is the width of each zebra stripe. When the value is 0, there is no zebra stripe.
 
 ### Serie.bottom
 
@@ -3581,6 +3668,12 @@ Index of layout component that serie uses. Default is -1 means not use layout, o
 
 忽略数据的默认值。当ignore为true才有效。
 
+### Serie.ignoreZeroOccupy
+
+`bool` `false` `v3.15.0`
+
+Whether to ignore the zero value bar occupy. When enabled, the bar with zero value will not occupy space, and the gap between bars will be automatically adjusted according to the actual displayed bars. Generally used in bar chart.
+
 ### Serie.index
 
 `int`

Documentation~/zh/api.md

@@ -13,6 +13,7 @@ slug: /api
 - [AnimationAddition](#animationaddition)
 - [AnimationChange](#animationchange)
 - [AnimationEasing](#animationeasing)
+- [AnimationExchange](#animationexchange)
 - [AnimationFadeIn](#animationfadein)
 - [AnimationFadeOut](#animationfadeout)
 - [AnimationHiding](#animationhiding)
@@ -70,6 +71,7 @@ slug: /api
 - [ColorUtil](#colorutil)
 - [Comment](#comment)
 - [CommentItem](#commentitem)
+- [CommentLayer](#commentlayer)
 - [CommentMarkStyle](#commentmarkstyle)
 - [ComponentHandlerAttribute](#componenthandlerattribute)
 - [ComponentHelper](#componenthelper)
@@ -157,6 +159,7 @@ slug: /api
 - [MainComponentContext](#maincomponentcontext)
 - [MainComponentHandler](#maincomponenthandler)
 - [MainComponentHandler<T>](#maincomponenthandlert)
+- [MainComponentHandler<Title>](#maincomponenthandlertitle)
 - [MarkArea](#markarea)
 - [MarkAreaData](#markareadata)
 - [MarkAreaType](#markareatype)
@@ -179,6 +182,7 @@ slug: /api
 - [ParallelCoordContext](#parallelcoordcontext)
 - [Pie](#pie)
 - [PieChart](#piechart)
+- [PieType](#pietype)
 - [PolarAxisTheme](#polaraxistheme)
 - [PolarChart](#polarchart)
 - [PolarCoord](#polarcoord)
@@ -255,6 +259,7 @@ slug: /api
 - [ThemeStyle](#themestyle)
 - [ThemeType](#themetype)
 - [Title](#title)
+- [TitleHandler](#titlehandler)
 - [TitleStyle](#titlestyle)
 - [TitleTheme](#titletheme)
 - [Tooltip](#tooltip)
@@ -360,6 +365,14 @@ class in XCharts.Runtime
 
 - `Linear`: 
 
+## AnimationExchange
+
+class in XCharts.Runtime / 继承自: [AnimationInfo](#animationinfo)
+
+> 从 `v3.15.0` 开始支持
+
+数据交换动画。一般用于图表数据排序时顺序变化的动画。
+
 ## AnimationFadeIn
 
 class in XCharts.Runtime / 继承自: [AnimationInfo](#animationinfo)
@@ -386,7 +399,7 @@ class in XCharts.Runtime / 继承自: [AnimationInfo](#animationinfo)
 
 ## AnimationInfo
 
-class in XCharts.Runtime / 子类: [AnimationFadeIn](#animationfadein),[AnimationFadeOut](#animationfadeout),[AnimationChange](#animationchange),[AnimationAddition](#animationaddition),[AnimationHiding](#animationhiding),[AnimationInteraction](#animationinteraction) 
+class in XCharts.Runtime / 子类: [AnimationFadeIn](#animationfadein),[AnimationFadeOut](#animationfadeout),[AnimationChange](#animationchange),[AnimationAddition](#animationaddition),[AnimationHiding](#animationhiding),[AnimationInteraction](#animationinteraction),[AnimationExchange](#animationexchange) 
 
 > 从 `v3.8.0` 开始支持
 
@@ -531,7 +544,7 @@ public float GetWidth(float width)
 
 class in XCharts.Runtime / 继承自: [ChildComponent](#childcomponent)
 
-动画组件，用于控制图表的动画播放。支持配置五种动画表现：FadeIn（渐入动画），FadeOut（渐出动画），Change（变更动画），Addition（新增动画），Interaction（交互动画）。 按作用的对象可以分为两类：SerieAnimation（系列动画）和DataAnimation（数据动画）。
+动画组件，用于控制图表的动画播放。支持配置五种动画表现：FadeIn（渐入动画），FadeOut（渐出动画），Change（变更动画），Addition（新增动画），Interaction（交互动画），Exchange（交换动画）。 按作用的对象可以分为两类：SerieAnimation（系列动画）和DataAnimation（数据动画）。
 
 ### AnimationStyle.addition
 
@@ -548,6 +561,11 @@ public AnimationChange change
 public bool enable  
 是否开启动画效果。
 
+### AnimationStyle.exchange
+
+public AnimationExchange exchange  
+交换动画配置。如在排序柱图中有效。
+
 ### AnimationStyle.fadeIn
 
 public AnimationFadeIn fadeIn  
@@ -639,6 +657,10 @@ public int GetCurrIndex()
 
 public float GetCurrRate()  
 
+### AnimationStyle.GetExchangeDuration
+
+public float GetExchangeDuration()  
+
 ### AnimationStyle.GetInteractionDuration
 
 public float GetInteractionDuration()  
@@ -789,6 +811,14 @@ class in XCharts.Runtime / 继承自: [MainComponent](#maincomponent) / 子类:
 
 直角坐标系的坐标轴组件。
 
+### Axis.onLabelClick
+
+public Action<int, string> onLabelClick  
+
+> 从 `v3.15.0` 开始支持
+
+点击文本标签回调函数。参数：labelIndex, labelName。
+
 ### Axis.AddData
 
 public void AddData(string category)  
@@ -888,7 +918,7 @@ public bool IsLog()
 
 ### Axis.IsNeedShowLabel
 
-public bool IsNeedShowLabel(int index, int total = 0)  
+public bool IsNeedShowLabel(int index, int total = 0, string content = null)  
 
 ### Axis.IsRight
 
@@ -1059,6 +1089,14 @@ class in XCharts / 继承自: [MainComponentHandler](#maincomponenthandler)
 
 public T component  
 
+### AxisHandler<T>.DrawTop
+
+// public override void DrawTop(VertexHelper vh)  
+
+### AxisHandler<T>.OnPointerClick
+
+public override void OnPointerClick(PointerEventData eventData)  
+
 ## AxisHelper
 
 class in XCharts.Runtime
@@ -1097,7 +1135,7 @@ public static float GetAxisValueDistance(GridCoord grid, Axis axis, float scaleW
 
 ### AxisHelper.GetAxisValueLength
 
-public static float GetAxisValueLength(GridCoord grid, Axis axis, float scaleWidth, double value)  
+public static float GetAxisValueLength(GridCoord grid, Axis axis, float scaleWidth, double value, float gap = 0)  
 获得数值value在坐标轴上对应的长度
 
 ### AxisHelper.GetAxisValuePosition
@@ -1184,7 +1222,7 @@ public override string GetFormatterContent(int labelIndex, int totalIndex, doubl
 
 ### AxisLabel.IsNeedShowLabel
 
-public bool IsNeedShowLabel(int index, int total)  
+public bool IsNeedShowLabel(int index, int total, string content = null)  
 
 ### AxisLabel.SetRelatedText
 
@@ -1674,6 +1712,10 @@ public Settings settings
 
 public ThemeStyle theme  
 
+### BaseChart.topPainter
+
+public Painter topPainter  
+
 ### BaseChart.typeListForComponent
 
 public Dictionary<Type, FieldInfo> typeListForComponent  
@@ -1682,6 +1724,11 @@ public Dictionary<Type, FieldInfo> typeListForComponent
 
 public Dictionary<Type, FieldInfo> typeListForSerie  
 
+### BaseChart.useUtc
+
+public bool useUtc  
+图表的时间是否都显示为UTC时间。
+
 ### BaseChart.AddChartComponent
 
 public MainComponent AddChartComponent(Type type)  
@@ -1938,6 +1985,10 @@ public Color32 GetLegendRealShowNameColor(string name)
 
 public int GetLegendRealShowNameIndex(string name)  
 
+### BaseChart.GetMainAxis
+
+public Axis GetMainAxis()  
+
 ### BaseChart.GetMarkColor
 
 public Color32 GetMarkColor(Serie serie, SerieData serieData)  
@@ -1996,10 +2047,6 @@ public float GetSerieTotalGap<T>(float categoryWidth, float gap, int index
 
 public float GetSerieTotalWidth<T>(float categoryWidth, float gap, int realBarCount, int gridIndex) where T : Serie  
 
-### BaseChart.GetTitlePosition
-
-public Vector3 GetTitlePosition(Title title)  
-
 ### BaseChart.GetVisualMapOfSerie
 
 public VisualMap GetVisualMapOfSerie(Serie serie)  
@@ -2519,6 +2566,10 @@ public string warningInfo
 public string CheckWarning()  
 检测警告信息。
 
+### BaseGraph.GetTitlePosition
+
+public Vector3 GetTitlePosition(Title title)  
+
 ### BaseGraph.LocalPointToScreenPoint
 
 public Vector2 LocalPointToScreenPoint(Vector2 localPoint)  
@@ -2585,11 +2636,6 @@ public void RefreshAllComponent()
 public virtual void RefreshGraph()  
 在下一帧刷新图形。
 
-### BaseGraph.SaveAsImage
-
-public void SaveAsImage(string imageType = "png", string savePath = "")  
-保存图表为图片。
-
 ### BaseGraph.ScreenPointToChartPoint
 
 public bool ScreenPointToChartPoint(Vector2 screenPoint, out Vector2 chartPoint)  
@@ -2847,6 +2893,14 @@ public static string ColorToStr(Color color)
 
 public static string FloatToStr(double value, string numericFormatter = "F", int precision = 0)  
 
+### ChartCached.GetAxisLabelName
+
+public static string GetAxisLabelName(int index)  
+
+### ChartCached.GetComponentObjectName
+
+public static string GetComponentObjectName(MainComponent component)  
+
 ### ChartCached.GetSerieLabelName
 
 public static string GetSerieLabelName(string prefix, int i, int j)  
@@ -2855,17 +2909,25 @@ public static string GetSerieLabelName(string prefix, int i, int j)
 
 public static string GetString(string prefix, int suffix)  
 
+### ChartCached.GetTypeName
+
+public static string GetTypeName(Type type)  
+
+### ChartCached.GetTypeName<T>
+
+public static string GetTypeName<T>()  
+
 ### ChartCached.IntToStr
 
 public static string IntToStr(int value, string numericFormatter = "")  
 
 ### ChartCached.NumberToDateStr
 
-public static string NumberToDateStr(double timestamp, string formatter)  
+public static string NumberToDateStr(double timestamp, string formatter, bool local = false)  
 
 ### ChartCached.NumberToDateTime
 
-public static DateTime NumberToDateTime(double timestamp)  
+public static DateTime NumberToDateTime(double timestamp, bool local = false)  
 
 ### ChartCached.NumberToStr
 
@@ -3111,10 +3173,6 @@ public static void RemoveTMPComponents(GameObject gameObject)
 
 public static Vector3 RotateRound(Vector3 position, Vector3 center, Vector3 axis, float angle)  
 
-### ChartHelper.SaveAsImage
-
-public static Texture2D SaveAsImage(RectTransform rectTransform, Canvas canvas, string imageType = "png", string path = "")  
-
 ### ChartHelper.SetActive
 
 public static bool SetActive(Image image, bool active)  
@@ -3174,6 +3232,10 @@ public float GetTextWidth()
 
 public float GetWidth()  
 
+### ChartLabel.InRect
+
+public bool InRect(Vector2 local)  
+
 ### ChartLabel.IsActiveByScale
 
 public bool IsActiveByScale()  
@@ -3428,13 +3490,20 @@ public static Color32 GetColor(string hexColorStr)
 
 class in XCharts.Runtime / 继承自: [MainComponent](#maincomponent),[IPropertyChanged](#ipropertychanged)
 
-图表注解组件。
+> 从 `v3.15.0` 开始支持
+
+图表注解组件。用于标注图表中的特殊信息。
 
 ### Comment.items
 
 public List<CommentItem> items  
 注解项。每个注解组件可以设置多个注解项。
 
+### Comment.layer
+
+public CommentLayer layer  
+注解的显示层级。
+
 ### Comment.show
 
 public bool show  
@@ -3443,10 +3512,12 @@ public bool show
 ### Comment.GetLabelStyle
 
 public LabelStyle GetLabelStyle(int index)  
+获取注解项的文本样式。
 
 ### Comment.GetMarkStyle
 
 public CommentMarkStyle GetMarkStyle(int index)  
+获取注解项的标记样式。
 
 ### Comment.OnChanged
 
@@ -3478,6 +3549,17 @@ public CommentMarkStyle markStyle
 public bool show  
 是否显示当前注解项。
 
+## CommentLayer
+
+class in XCharts.Runtime
+
+注解的显示层级。
+
+可选：
+
+- `Lower`: 注解在系列下方。
+- `Upper`: 注解在系列上方。
+
 ## CommentMarkStyle
 
 class in XCharts.Runtime / 继承自: [ChildComponent](#childcomponent)
@@ -3763,17 +3845,17 @@ class in XCharts.Runtime
 
 ### DateTimeUtil.GetDateTime
 
-public static DateTime GetDateTime(double timestamp, bool local = true)  
+public static DateTime GetDateTime(double timestamp, bool local = false)  
 
 ### DateTimeUtil.GetDefaultDateTimeString
 
-public static string GetDefaultDateTimeString(int timestamp, double range = 0)  
+public static string GetDefaultDateTimeString(double timestamp, double range = 0, bool local = false)  
 
 ### DateTimeUtil.GetTimestamp
 
-public static int GetTimestamp(DateTime time, bool local = false)  
+public static double GetTimestamp(DateTime time, bool local = false)  
 
-public static int GetTimestamp(string dateTime, bool local = false)  
+public static double GetTimestamp(string dateTime, bool local = false)  
 
 
 ### DateTimeUtil.IsDateOrTimeRegex
@@ -4683,7 +4765,7 @@ public virtual string GetFormatterContent(int labelIndex, int totalIndex, double
 
 ### LabelStyle.GetFormatterDateTime
 
-public string GetFormatterDateTime(int labelIndex, int totalIndex, double value, double minValue, double maxValue)  
+public string GetFormatterDateTime(int labelIndex, int totalIndex, double value, double minValue, double maxValue, bool local)  
 
 ### LabelStyle.GetOffset
 
@@ -5687,6 +5769,10 @@ class in XCharts.Runtime / 继承自: [MainComponentHandler](#maincomponenthandl
 
 public T component  
 
+## MainComponentHandler<Title>
+
+class in  / 子类: [TitleHandler](#titlehandler) 
+
 ## MarkArea
 
 class in XCharts.Runtime / 继承自: [MainComponent](#maincomponent)
@@ -5785,7 +5871,7 @@ class in XCharts.Runtime
 
 可选：
 
-- `None`: 标线类型
+- `Custom`: 自定义。可自定义xy坐标或数值。
 - `Min`: 最小值。
 - `Max`: 最大值。
 - `Average`: 平均值。
@@ -5982,10 +6068,6 @@ class in XCharts.Runtime / 继承自: [MaskableGraphic](https://docs.unity3d.com
 
 public int index  
 
-### Painter.onPopulateMesh
-
-public Action<VertexHelper, Painter> onPopulateMesh  
-
 ### Painter.type
 
 public Type type  
@@ -6120,6 +6202,15 @@ public void DefaultLabelPieChart()
 public void DefaultRadiusRosePieChart()  
 默认玫瑰饼图。
 
+## PieType
+
+class in XCharts.Runtime
+
+可选：
+
+- `Solid`: 实心饼图 - 默认填充样式
+- `Wireframe`: 线框饼图 - 仅显示轮廓线框
+
 ## PolarAxisTheme
 
 class in XCharts.Runtime / 继承自: [BaseAxisTheme](#baseaxistheme)
@@ -7141,12 +7232,12 @@ public double GetLastData()
 
 ### SerieData.GetMaxData
 
-public double GetMaxData(bool inverse = false)  
+public double GetMaxData(bool inverse = false, int startDimensionIndex = 0)  
 最大值。
 
 ### SerieData.GetMinData
 
-public double GetMinData(bool inverse = false)  
+public double GetMinData(bool inverse = false, int startDimensionIndex = 0)  
 最小值。
 
 ### SerieData.GetMinMaxData
@@ -7257,6 +7348,10 @@ class in XCharts.Runtime
 
 public void Reset()  
 
+### SerieDataContext.UpdateExchangePosition
+
+public void UpdateExchangePosition(ref float x, ref float y, float totalTime)  
+
 ## SerieDataExtraFieldAttribute
 
 class in XCharts.Runtime / 继承自: [Attribute](https://docs.unity3d.com/ScriptReference/30_search.html?q=attribute)
@@ -7685,6 +7780,10 @@ public override void RefreshLabelInternal()
 
 public override void RefreshLabelNextFrame()  
 
+### SerieHandler<T>.RefreshTitleLabelInternal
+
+public void RefreshTitleLabelInternal()  
+
 ### SerieHandler<T>.RemoveComponent
 
 public override void RemoveComponent()  
@@ -8605,6 +8704,30 @@ public override void ClearComponentDirty()
 
 public void OnChanged()  
 
+## TitleHandler
+
+class in XCharts.Runtime / 继承自: [MainComponentHandler<Title>](#maincomponenthandlertitle)
+
+### TitleHandler.AddSubTitleLabel
+
+public static ChartLabel AddSubTitleLabel(Transform parent, Title title, ComponentTheme componentTheme, BaseChart chart = null)  
+
+### TitleHandler.AddTitleLabel
+
+public static ChartLabel AddTitleLabel(Transform parent, Title title, ComponentTheme componentTheme, BaseChart chart = null)  
+
+### TitleHandler.AddTitleObject
+
+public static GameObject AddTitleObject(BaseGraph graph, Title title, ComponentTheme componentTheme, int titleSiblingIndex, string objectName = null)  
+
+### TitleHandler.InitComponent
+
+public override void InitComponent()  
+
+### TitleHandler.OnSerieDataUpdate
+
+public override void OnSerieDataUpdate(int serieIndex)  
+
 ## TitleStyle
 
 class in XCharts.Runtime / 继承自: [LabelStyle](#labelstyle),[ISerieDataComponent](#iseriedatacomponent),[ISerieComponent](#iseriecomponent)

Documentation~/zh/changelog.md

@@ -6,6 +6,7 @@ slug: /changelog
 # 更新日志
 
 [master](#master)  
+[v3.15.0](#v3150)  
 [v3.14.0](#v3140)  
 [v3.13.0](#v3130)  
 [v3.12.1](#v3121)  
@@ -80,6 +81,59 @@ slug: /changelog
 
 ## master
 
+## v3.15.0
+
+版本要点：
+
+* __时间轴与缩放能力增强__：新增 `DataZoom.minZoomRatio`（替代 `minShowNum`）、`Chart.useUtc`，并持续优化 `Axis Time` 在缩放与大年份场景下的表现。
+* __柱图与坐标轴配置更灵活__：新增 `Axis.mainAxis` 控制柱图朝向、`Serie.ignoreZeroOccupy` 控制 0 值柱是否占位、`AxisLine` 延长线配置等。
+* __图表样式与交互能力提升__：新增 `Pie.pieType`、`Legend.itemInactiveOpacity`、`Axis.onLabelClick`、`Animation.Exchange`、`LabelStyle.fixedX/fixedY` 等。
+* __扩展 UI 组件持续完善__：`UITable` 新增 `Title` 与 `Viewport` 配置，`UIStatistic.desc` 增强，`Comment.layer` 与坐标刷新体验优化。
+* __稳定性与兼容性修复集中推进__：修复 `SaveAsImage` 遮挡保存、`Pie` 点击失效、`TMP` 兼容、`Gantt` 时间区间与 2038 年问题、`MarkArea/GridCoord/Axis` 等多项关键问题。
+
+日志详情：
+
+* (2026.03.01) 发布`v3.15.0`版本
+* (2026.02.26) 增加`Serie`的`ignoreZeroOccupy`可设置0数据的Bar是否占位 (#286)
+* (2026.02.26) 修复`SaveAsImage`被其他组件遮挡时无法正常保存的问题 (#337)
+* (2026.02.26) 增加`Axis`的`mainAxis`参数设置主轴可控制柱图的朝向 (#331)
+* (2026.02.03) 修复`UITable`的`viewport`在不同的锚点下可能会绘制异常的问题
+* (2026.01.15) 修复`Pie`的点击有时候不响应的问题 (#357)
+* (2026.01.08) 增加`DataZoom`的`minZoomRatio`替换旧的`minShowNum` (#350)
+* (2025.11.05) 修复`Axis`的`indicatorLabel`无法隐藏的问题
+* (2025.11.03) 增加`Tooltip`的`Title`可通过`TitleLabelStyle`的`numericFormatter`格式化时间显示 (#353)
+* (2025.10.30) 增加`Chart`的`useUtc`参数设置显示时间是否用UTC时间
+* (2025.10.30) 优化`Candlestick`对时间轴的支持
+* (2025.10.30) 增加`Scatter`的`ignore`支持设置忽略数据
+* (2025.10.24) 优化`Sankey`的线条绘制排序
+* (2025.10.22) 增加`Pie`的`pieType`支持实心饼图和线框柄图 (#349)
+* (2025.09.05) 优化`MarkLine`的表现
+* (2025.09.01) 增加`AxisLine`的`startExtendLength`和`endExtendLength`设置轴线的延长线
+* (2025.08.27) 修复`Serie`的`TitleStyle`在数据变更时不及时刷新的问题
+* (2025.05.19) 修复`TMP`开启时`Axis`运行报错
+* (2025.04.25) 修复`MarkArea`指定`yValue`或`xValue`时绘制区域不准确的问题
+* (2025.04.17) 增加`UITable`的`Title`支持设置标题
+* (2025.04.17) 增加`UITable`的`Viewport`支持设置表格视口边距边框
+* (2025.04.15) 增加`Bar`支持通过`VisualMap`设置颜色
+* (2025.04.14) 增加`AxisLabel`的`showZeroLabel`设置是否显示0刻度
+* (2025.04.08) 增加`UIStatistic`的`desc`描述文本设置支持
+* (2025.04.07) 修复`Gantt`甘特图在有多维数据时计算的时间区间不准确的问题
+* (2025.04.07) 优化`Axis`的`Time`时间轴支持设置Custom和ceilRate
+* (2025.04.07) 修复`GridCoord`在设置背景色且Serie开启Clip时会覆盖图表的问题
+* (2025.04.07) 修复`Gantt`甘特图年份大于2038时显示异常的问题
+* (2025.04.07) 修复`Axis`的`Time`时间轴无法显示大于2038的年份的问题
+* (2025.04.06) 修复`Axis`的`Time`时间轴在有`DataZoom`缩放时文本显示异常的问题
+* (2025.03.28) 修复`Pie3D`的`avoidLabelOverlap`不生效的问题
+* (2025.03.27) 增加`Legend`的`itemInactiveOpacity`可设置非激活状态时的颜色透明度 (#343)
+* (2025.03.27) 增加`Axis`的`onLabelClick`回调事件
+* (2025.03.26) 增加`Animation`的`Exchange`排序交换动画
+* (2025.03.22) 增加`Comment`的`layer`设置层级
+* (2025.03.21) 优化`Comment`的坐标刷新
+* (2025.03.19) 增加`Serie`的`Label`的`formatter`支持`{index}`通配符
+* (2025.03.18) 增加`Bar`可添加`TitleStyle`组件支持
+* (2025.03.18) 增加`LabelStyle`的`fixedX`和`fixedY`可固定label的坐标
+* (2025.03.17) 增加`ItemStyle`的`backgroundGap`可设置数据项背景间隙
+
 ## v3.14.0
 
 版本要点：

Documentation~/zh/configuration.md

@@ -176,6 +176,7 @@ slug: /configuration
 
 - [AnimationAddition](#animationaddition)
 - [AnimationChange](#animationchange)
+- [AnimationExchange](#animationexchange)
 - [AnimationFadeIn](#animationfadein)
 - [AnimationFadeOut](#animationfadeout)
 - [AnimationHiding](#animationhiding)
@@ -234,6 +235,14 @@ class in XCharts.Runtime / 继承自: [AnimationInfo](#animationinfo)
 
 数据变更动画。
 
+## AnimationExchange
+
+class in XCharts.Runtime / 继承自: [AnimationInfo](#animationinfo)
+
+> 从 `v3.15.0` 开始支持
+
+数据交换动画。一般用于图表数据排序时顺序变化的动画。
+
 ## AnimationFadeIn
 
 class in XCharts.Runtime / 继承自: [AnimationInfo](#animationinfo)
@@ -260,7 +269,7 @@ class in XCharts.Runtime / 继承自: [AnimationInfo](#animationinfo)
 
 ## AnimationInfo
 
-class in XCharts.Runtime / 子类: [AnimationFadeIn](#animationfadein), [AnimationFadeOut](#animationfadeout), [AnimationChange](#animationchange), [AnimationAddition](#animationaddition), [AnimationHiding](#animationhiding), [AnimationInteraction](#animationinteraction)
+class in XCharts.Runtime / 子类: [AnimationFadeIn](#animationfadein), [AnimationFadeOut](#animationfadeout), [AnimationChange](#animationchange), [AnimationAddition](#animationaddition), [AnimationHiding](#animationhiding), [AnimationInteraction](#animationinteraction), [AnimationExchange](#animationexchange)
 
 > 从 `v3.8.0` 开始支持
 
@@ -326,7 +335,7 @@ class in XCharts.Runtime / 继承自: [AnimationInfo](#animationinfo)
 
 class in XCharts.Runtime / 继承自: [ChildComponent](#childcomponent)
 
-动画组件，用于控制图表的动画播放。支持配置五种动画表现：FadeIn（渐入动画），FadeOut（渐出动画），Change（变更动画），Addition（新增动画），Interaction（交互动画）。 按作用的对象可以分为两类：SerieAnimation（系列动画）和DataAnimation（数据动画）。
+动画组件，用于控制图表的动画播放。支持配置五种动画表现：FadeIn（渐入动画），FadeOut（渐出动画），Change（变更动画），Addition（新增动画），Interaction（交互动画），Exchange（交换动画）。 按作用的对象可以分为两类：SerieAnimation（系列动画）和DataAnimation（数据动画）。
 
 ### AnimationStyle.addition
 
@@ -356,6 +365,12 @@ class in XCharts.Runtime / 继承自: [ChildComponent](#childcomponent)
 
 是否开启动画效果。
 
+### AnimationStyle.exchange
+
+[AnimationExchange](#animationexchange) `v3.15.0`
+
+交换动画配置。如在排序柱图中有效。
+
 ### AnimationStyle.fadeIn
 
 [AnimationFadeIn](#animationfadein) `v3.8.0`
@@ -603,6 +618,12 @@ class in XCharts.Runtime / 继承自: [MainComponent](#maincomponent) / 子类:
 
 对数轴是否以自然数 e 为底数，为 true 时 logBase 失效。
 
+### Axis.mainAxis
+
+`bool` `false` `v3.15.0`
+
+是否为主轴。当XY轴类型都相同时，设置为主轴的轴会决定朝向，如横向柱图和纵向柱图。
+
 ### Axis.max
 
 `double`
@@ -789,6 +810,12 @@ class in XCharts.Runtime / 继承自: [LabelStyle](#labelstyle)
 
 是否显示第一个文本。
 
+### AxisLabel.showZeroLabel
+
+`bool` `true` `v3.15.0`
+
+是否显示0刻度文本。
+
 ### AxisLabel.textLimit
 
 [TextLimit](#textlimit)
@@ -807,6 +834,12 @@ class in XCharts.Runtime / 继承自: [BaseLine](#baseline)
 
 轴线箭头。
 
+### AxisLine.endExtendLength
+
+`float`
+
+轴线终点延长线长度。
+
 ### AxisLine.onZero
 
 `bool`
@@ -819,6 +852,12 @@ X 轴或者 Y 轴的轴线是否在另一个轴的 0 刻度上，只有在另一
 
 是否显示箭头。
 
+### AxisLine.startExtendLength
+
+`float`
+
+轴线起点延长线长度。
+
 ## AxisMinorSplitLine
 
 class in XCharts.Runtime / 继承自: [BaseLine](#baseline)
@@ -1247,7 +1286,9 @@ class in XCharts.Runtime / 子类: [AnimationStyle](#animationstyle), [AxisAnima
 
 class in XCharts.Runtime / 继承自: [MainComponent](#maincomponent), [IPropertyChanged](#ipropertychanged)
 
-图表注解组件。
+> 从 `v3.15.0` 开始支持
+
+图表注解组件。用于标注图表中的特殊信息。
 
 ### Comment.items
 
@@ -1261,6 +1302,17 @@ class in XCharts.Runtime / 继承自: [MainComponent](#maincomponent), [IPropert
 
 所有组件的文本样式。
 
+### Comment.layer
+
+[CommentLayer](#commentlayer) `v3.15.0`
+
+注解的显示层级。
+
+可选：
+
+- `Lower`: 注解在系列下方。
+- `Upper`: 注解在系列上方。
+
 ### Comment.markStyle
 
 [CommentMarkStyle](#commentmarkstyle)
@@ -1470,11 +1522,11 @@ DataZoom 组件 用于区域缩放，从而能自由关注细节的数据信息
 
 选取框样式。
 
-### DataZoom.minShowNum
+### DataZoom.minZoomRatio
 
-`int` `2`
+`float` `0.2f`
 
-最小显示数据个数。当DataZoom放大到最大时，最小显示的数据个数。
+缩放区域组件的最小缩放比例，范围0f-1f。
 
 ### DataZoom.orient
 
@@ -2238,6 +2290,12 @@ class in XCharts.Runtime / 继承自: [ChildComponent](#childcomponent), [ISerie
 
 数据项背景颜色。
 
+### ItemStyle.backgroundGap
+
+`float` `v3.15.0`
+
+数据项背景间隙。
+
 ### ItemStyle.backgroundWidth
 
 `float`
@@ -2464,6 +2522,18 @@ class in XCharts.Runtime / 继承自: [ChildComponent](#childcomponent), [ISerie
 
 距离轴线的距离。
 
+### LabelStyle.fixedX
+
+`float` `0` `v3.15.0`
+
+固定的X值。不为0时，会固定在指定的X值上。
+
+### LabelStyle.fixedY
+
+`float` `0` `v3.15.0`
+
+固定的Y值。不为0时，会固定在指定的Y值上。
+
 ### LabelStyle.formatter
 
 `string`
@@ -2615,6 +2685,12 @@ class in XCharts.Runtime / 继承自: [MainComponent](#maincomponent), [IPropert
 
 图例标记的图形高度。
 
+### Legend.itemInactiveOpacity
+
+`float` `1` `v3.15.0`
+
+图例标记的图形在非激活状态下的颜色透明度。
+
 ### Legend.itemOpacity
 
 `float` `1`
@@ -2690,11 +2766,11 @@ class in XCharts.Runtime / 继承自: [MainComponent](#maincomponent), [IPropert
 
 class in XCharts.Runtime / 继承自: [ComponentTheme](#componenttheme)
 
-### LegendTheme.unableColor
+### LegendTheme.inactiveColor
 
 `Color`
 
-文本颜色。
+非激活状态时的颜色。
 
 ## Level
 
@@ -3110,7 +3186,7 @@ class in XCharts.Runtime / 继承自: [ChildComponent](#childcomponent)
 
 可选：
 
-- `None`: 标线类型
+- `Custom`: 自定义。可自定义xy坐标或数值。
 - `Min`: 最小值。
 - `Max`: 最大值。
 - `Average`: 平均值。
@@ -3120,25 +3196,25 @@ class in XCharts.Runtime / 继承自: [ChildComponent](#childcomponent)
 
 `float`
 
-相对原点的 x 坐标，单位像素。当type为None时有效。
+相对原点的 x 坐标，单位像素。当type为Custom时有效。
 
 ### MarkLineData.xValue
 
 `double`
 
-X轴上的指定值。当X轴为类目轴时指定值表示类目轴数据的索引，否则为具体的值。当type为None时有效。
+X轴上的指定值。当X轴为类目轴时指定值表示类目轴数据的索引，否则为具体的值。当type为Custom时有效。
 
 ### MarkLineData.yPosition
 
 `float`
 
-相对原点的 y 坐标，单位像素。当type为None时有效。
+相对原点的 y 坐标，单位像素。当type为Custom时有效。
 
 ### MarkLineData.yValue
 
 `double`
 
-Y轴上的指定值。当Y轴为类目轴时指定值表示类目轴数据的索引，否则为具体的值。当type为None时有效。
+Y轴上的指定值。当Y轴为类目轴时指定值表示类目轴数据的索引，否则为具体的值。当type为Custom时有效。
 
 ### MarkLineData.zeroPosition
 
@@ -3303,6 +3379,17 @@ grid 组件离容器上侧的距离。
 
 class in XCharts.Runtime / 继承自: [Serie](#serie)
 
+### Pie.pieType
+
+[PieType](#pietype) `v3.15.0`
+
+饼图类型。
+
+可选：
+
+- `Solid`: 实心饼图 - 默认填充样式
+- `Wireframe`: 线框饼图 - 仅显示轮廓线框
+
 ### Pie.radiusGradient
 
 `bool` `false` `v3.8.1`
@@ -3581,6 +3668,12 @@ class in XCharts.Runtime / 继承自: [BaseSerie](#baseserie), [IComparable](htt
 
 忽略数据的默认值。当ignore为true才有效。
 
+### Serie.ignoreZeroOccupy
+
+`bool` `false` `v3.15.0`
+
+柱图是否忽略值为0的柱子占位。开启后，值为0的柱子将不会占用空间，柱子之间的间距会根据实际显示的柱子自动调整。一般用在柱状图中。
+
 ### Serie.index
 
 `int`

Editor/Charts/BaseChartEditor.cs

@@ -26,6 +26,7 @@ namespace XCharts.Editor
         protected SerializedProperty m_Settings;
         protected SerializedProperty m_Theme;
         protected SerializedProperty m_ChartName;
+        protected SerializedProperty m_UseUtc;
         protected SerializedProperty m_DebugInfo;
         protected SerializedProperty m_RaycastTarget;
 
@@ -49,6 +50,7 @@ namespace XCharts.Editor
             m_Script = serializedObject.FindProperty("m_Script");
             m_EnableTextMeshPro = serializedObject.FindProperty("m_EnableTextMeshPro");
             m_ChartName = serializedObject.FindProperty("m_ChartName");
+            m_UseUtc = serializedObject.FindProperty("m_UseUtc");
             m_Theme = serializedObject.FindProperty("m_Theme");
             m_Settings = serializedObject.FindProperty("m_Settings");
             m_DebugInfo = serializedObject.FindProperty("m_DebugInfo");
@@ -124,6 +126,7 @@ namespace XCharts.Editor
             {
                 EditorGUILayout.PropertyField(m_Script);
                 EditorGUILayout.PropertyField(m_ChartName);
+                EditorGUILayout.PropertyField(m_UseUtc);
                 EditorGUILayout.PropertyField(m_RaycastTarget);
                 if (XChartsMgr.IsRepeatChartName(m_Chart, m_ChartName.stringValue))
                 {
@@ -282,7 +285,7 @@ namespace XCharts.Editor
             }
             if (GUILayout.Button(Styles.btnSaveAsImage))
             {
-                m_Chart.SaveAsImage();
+                m_Chart.SaveAsImage("png", "", 4f);
             }
             if (m_CheckWarning)
             {

Editor/ChildComponents/AnimationDrawer.cs

@@ -71,6 +71,21 @@ namespace XCharts.Editor
         }
     }
 
+    [CustomPropertyDrawer(typeof(XCharts.Runtime.AnimationExchange), true)]
+    public class AnimationExchangeDrawer : BasePropertyDrawer
+    {
+        public override void OnGUI(Rect pos, SerializedProperty prop, GUIContent label)
+        {
+            base.OnGUI(pos, prop, label);
+            if (MakeComponentFoldout(prop, "m_Enable", true))
+            {
+                ++EditorGUI.indentLevel;
+                PropertyField(prop, "m_Duration");
+                --EditorGUI.indentLevel;
+            }
+        }
+    }
+
     [CustomPropertyDrawer(typeof(AnimationStyle), true)]
     public class AnimationDrawer : BasePropertyDrawer
     {
@@ -88,6 +103,7 @@ namespace XCharts.Editor
                 PropertyField(prop, "m_Change");
                 PropertyField(prop, "m_Addition");
                 PropertyField(prop, "m_Interaction");
+                PropertyField(prop, "m_Exchange");
                 --EditorGUI.indentLevel;
             }
         }

Editor/ChildComponents/ComponentThemeDrawer.cs

@@ -102,7 +102,7 @@ namespace XCharts.Editor
         protected override void DrawExtendeds(SerializedProperty prop)
         {
             base.DrawExtendeds(prop);
-            PropertyField(prop, "m_UnableColor");
+            PropertyField(prop, "m_InactiveColor");
         }
     }
 

Editor/ChildComponents/ItemStyleDrawer.cs

@@ -21,6 +21,7 @@ namespace XCharts.Editor
                 PropertyField(prop, "m_MarkColor");
                 PropertyField(prop, "m_BackgroundColor");
                 PropertyField(prop, "m_BackgroundWidth");
+                PropertyField(prop, "m_BackgroundGap");
                 PropertyField(prop, "m_CenterColor");
                 PropertyField(prop, "m_CenterGap");
                 PropertyField(prop, "m_BorderWidth");

Editor/ChildComponents/LabelStyleDrawer.cs

@@ -24,6 +24,8 @@ namespace XCharts.Editor
                 PropertyField(prop, "m_Rotate");
                 PropertyField(prop, "m_Width");
                 PropertyField(prop, "m_Height");
+                PropertyField(prop, "m_FixedX");
+                PropertyField(prop, "m_FixedY");
                 PropertyField(prop, "m_Icon");
                 PropertyField(prop, "m_Background");
                 PropertyField(prop, "m_TextStyle");

Editor/ChildComponents/LineDrawer.cs

@@ -29,6 +29,8 @@ namespace XCharts.Editor
         {
             base.DrawExtendeds(prop);
             PropertyField(prop, "m_OnZero");
+            PropertyField(prop, "m_StartExtendLength");
+            PropertyField(prop, "m_EndExtendLength");
             PropertyField(prop, "m_ShowArrow");
             PropertyField(prop, "m_Arrow");
         }

Editor/MainComponents/AxisEditor.cs

@@ -102,10 +102,24 @@ namespace XCharts.Editor
     }
 
     [ComponentEditor(typeof(XAxis))]
-    public class XAxisEditor : AxisEditor { }
+    public class XAxisEditor : AxisEditor
+    {
+        protected override void DrawExtendeds()
+        {
+            base.DrawExtendeds();
+            PropertyField("m_MainAxis");
+        }
+    }
 
     [ComponentEditor(typeof(YAxis))]
-    public class YAxisEditor : AxisEditor { }
+    public class YAxisEditor : AxisEditor
+    {
+        protected override void DrawExtendeds()
+        {
+            base.DrawExtendeds();
+            PropertyField("m_MainAxis");
+        }
+    }
 
     [ComponentEditor(typeof(XAxis3D))]
     public class XAxis3DEditor : AxisEditor { }
@@ -164,6 +178,7 @@ namespace XCharts.Editor
 
                 PropertyField(prop, "m_ShowAsPositiveNumber");
                 PropertyField(prop, "m_OnZero");
+                PropertyField(prop, "m_ShowZeroLabel");
                 PropertyField(prop, "m_ShowStartLabel");
                 PropertyField(prop, "m_ShowEndLabel");
 

Editor/MainComponents/CommentEditor.cs

@@ -9,6 +9,7 @@ namespace XCharts.Editor
         public override void OnInspectorGUI()
         {
             ++EditorGUI.indentLevel;
+            PropertyField("m_Layer");
             PropertyField("m_LabelStyle");
             //PropertyField("m_MarkStyle");
             PropertyListField("m_Items", true);

Editor/MainComponents/DataZoomEditor.cs

@@ -13,7 +13,7 @@ namespace XCharts.Editor
             var m_SupportMarquee = baseProperty.FindPropertyRelative("m_SupportMarquee");
             var m_Start = baseProperty.FindPropertyRelative("m_Start");
             var m_End = baseProperty.FindPropertyRelative("m_End");
-            var m_MinShowNum = baseProperty.FindPropertyRelative("m_MinShowNum");
+            var m_MinZoomRatio = baseProperty.FindPropertyRelative("m_MinZoomRatio");
             ++EditorGUI.indentLevel;
             PropertyField("m_Orient");
             PropertyField("m_SupportInside");
@@ -31,10 +31,11 @@ namespace XCharts.Editor
             PropertyField(m_End);
             PropertyField("m_StartLock");
             PropertyField("m_EndLock");
-            PropertyField(m_MinShowNum);
+            PropertyField(m_MinZoomRatio);
             if (m_Start.floatValue < 0) m_Start.floatValue = 0;
             if (m_End.floatValue > 100) m_End.floatValue = 100;
-            if (m_MinShowNum.intValue < 0) m_MinShowNum.intValue = 0;
+            if (m_MinZoomRatio.floatValue < 0) m_MinZoomRatio.floatValue = 0;
+            if (m_MinZoomRatio.floatValue > 1) m_MinZoomRatio.floatValue = 1;
             if (m_SupportSlider.boolValue)
             {
                 PropertyField("m_ShowDataShadow");

Editor/MainComponents/LegendEditor.cs

@@ -15,6 +15,7 @@ namespace XCharts.Editor
             PropertyField("m_ItemGap");
             PropertyField("m_ItemAutoColor");
             PropertyField("m_ItemOpacity");
+            PropertyField("m_ItemInactiveOpacity");
             PropertyField("m_SelectedMode");
             PropertyField("m_Orient");
             PropertyField("m_Location");

Editor/MainComponents/MarkLineEditor.cs

@@ -34,7 +34,7 @@ namespace XCharts.Editor
                 PropertyField(prop, "m_Name");
                 switch (type)
                 {
-                    case MarkLineType.None:
+                    case MarkLineType.Custom:
                         PropertyField(prop, "m_XPosition");
                         PropertyField(prop, "m_YPosition");
                         PropertyField(prop, "m_XValue");
@@ -48,7 +48,7 @@ namespace XCharts.Editor
                         break;
                 }
                 PropertyField(prop, "m_Group");
-                if (group > 0 && type == MarkLineType.None) PropertyField(prop, "m_ZeroPosition");
+                if (group > 0 && type == MarkLineType.Custom) PropertyField(prop, "m_ZeroPosition");
                 PropertyField(prop, "m_LineStyle");
                 PropertyField(prop, "m_StartSymbol");
                 PropertyField(prop, "m_EndSymbol");

Editor/MainComponents/UIComponentEditor.cs

@@ -54,7 +54,7 @@ namespace XCharts.Editor
             }
             if (GUILayout.Button(Styles.btnSaveAsImage))
             {
-                m_UIComponent.SaveAsImage();
+                m_UIComponent.SaveAsImage("png", "", 4f);
             }
             OnDebugEndInspectorGUI();
         }

Editor/Series/BarEditor.cs

@@ -22,6 +22,7 @@ namespace XCharts.Editor
             PropertyField("m_BarWidth");
             PropertyField("m_BarGap");
             PropertyField("m_BarMaxWidth");
+            PropertyField("m_IgnoreZeroOccupy");
             PropertyField("m_RealtimeSort");
             if(serie.useSortData)
             {

Editor/Series/PieEditor.cs

@@ -8,6 +8,7 @@ namespace XCharts.Editor
         public override void OnCustomInspectorGUI()
         {
             PropertyField("m_GridIndex");
+            PropertyField("m_PieType");
             PropertyField("m_RoseType");
             PropertyField("m_Gap");
             PropertyTwoFiled("m_Center");

Editor/Series/ScatterEditor.cs

@@ -18,6 +18,8 @@ namespace XCharts.Editor
             }
             PropertyField("m_MaxCache");
             PropertyField("m_Clip");
+            PropertyField("m_Ignore");
+            PropertyField("m_IgnoreValue");
 
             PropertyField("m_Symbol");
             PropertyField("m_ItemStyle");

Runtime/Component/Animation/AnimationInfo.cs

@@ -493,4 +493,14 @@ namespace XCharts.Runtime
             return m_Offset.value;
         }
     }
+
+    /// <summary>
+    /// Data exchange animation. Generally used for animation of data sorting.
+    /// ||数据交换动画。一般用于图表数据排序时顺序变化的动画。
+    /// </summary>
+    [Since("v3.15.0")]
+    [System.Serializable]
+    public class AnimationExchange : AnimationInfo
+    {
+    }
 }

Runtime/Component/Animation/AnimationStyle.cs

@@ -44,8 +44,8 @@ namespace XCharts.Runtime
     }
 
     /// <summary>
-    /// the animation of serie. support animation type: fadeIn, fadeOut, change, addition.
+    /// the animation of serie. support animation type: fadeIn, fadeOut, change, addition, exchange.
-    /// ||动画组件，用于控制图表的动画播放。支持配置五种动画表现：FadeIn（渐入动画），FadeOut（渐出动画），Change（变更动画），Addition（新增动画），Interaction（交互动画）。
+    /// ||动画组件，用于控制图表的动画播放。支持配置五种动画表现：FadeIn（渐入动画），FadeOut（渐出动画），Change（变更动画），Addition（新增动画），Interaction（交互动画），Exchange（交换动画）。
     /// 按作用的对象可以分为两类：SerieAnimation（系列动画）和DataAnimation（数据动画）。
     /// </summary>
     [System.Serializable]
@@ -62,6 +62,7 @@ namespace XCharts.Runtime
         [SerializeField][Since("v3.8.0")] private AnimationAddition m_Addition = new AnimationAddition() { duration = 500 };
         [SerializeField][Since("v3.8.0")] private AnimationHiding m_Hiding = new AnimationHiding() { duration = 500 };
         [SerializeField][Since("v3.8.0")] private AnimationInteraction m_Interaction = new AnimationInteraction() { duration = 250 };
+        [SerializeField][Since("v3.15.0")] private AnimationExchange m_Exchange = new AnimationExchange() { duration = 250 };
 
         [Obsolete("Use animation.fadeIn.delayFunction instead.", true)]
         public AnimationDelayFunction fadeInDelayFunction;
@@ -138,6 +139,11 @@ namespace XCharts.Runtime
         /// ||交互动画配置。
         /// </summary>
         public AnimationInteraction interaction { get { return m_Interaction; } }
+        /// <summary>
+        /// Exchange animation configuration. Valid in sort bar chart.
+        /// ||交换动画配置。如在排序柱图中有效。
+        /// </summary>
+        public AnimationExchange exchange { get { return m_Exchange; } }
 
         private Vector3 m_LinePathLastPos;
         private List<AnimationInfo> m_Animations;
@@ -147,12 +153,15 @@ namespace XCharts.Runtime
             {
                 if (m_Animations == null)
                 {
-                    m_Animations = new List<AnimationInfo>();
+                    m_Animations = new List<AnimationInfo>
-                    m_Animations.Add(m_FadeIn);
+                    {
-                    m_Animations.Add(m_FadeOut);
+                        m_FadeIn,
-                    m_Animations.Add(m_Change);
+                        m_FadeOut,
-                    m_Animations.Add(m_Addition);
+                        m_Change,
-                    m_Animations.Add(m_Hiding);
+                        m_Addition,
+                        m_Hiding,
+                        m_Exchange
+                    };
                 }
                 return m_Animations;
             }
@@ -565,6 +574,14 @@ namespace XCharts.Runtime
                 return 0;
         }
 
+        public float GetExchangeDuration()
+        {
+            if (m_Enable && m_Exchange.enable)
+                return m_Exchange.context.currDuration > 0 ? m_Exchange.context.currDuration : m_Exchange.duration;
+            else
+                return 0;
+        }
+
         public float GetAdditionDuration()
         {
             if (m_Enable && m_Addition.enable)

Runtime/Component/Axis/AngleAxis/AngleAxisHandler.cs

@@ -85,7 +85,7 @@ namespace XCharts.Runtime
                 float scaleAngle = AxisHelper.GetScaleWidth(axis, total, i + 1, null);
                 bool inside = axis.axisLabel.inside;
                 var labelName = AxisHelper.GetLabelName(axis, total, i, axis.context.minValue, axis.context.maxValue,
-                    null, isPercentStack);
+                    null, isPercentStack, chart.useUtc);
                 var label = ChartHelper.AddAxisLabelObject(splitNumber, i, objName + i, axisObj.transform,
                     new Vector2(scaleAngle, txtHig), axis,
                     chart.theme.axis, labelName, Color.clear);

Runtime/Component/Axis/Axis.cs

@@ -100,6 +100,7 @@ namespace XCharts.Runtime
         [SerializeField] private bool m_Clockwise = true;
         [SerializeField] private bool m_InsertDataToHead;
         [SerializeField][Since("v3.11.0")] private float m_MinCategorySpacing = 0;
+        [SerializeField][Since("v3.15.0")] private bool m_MainAxis = false;
         [SerializeField] protected List<Sprite> m_Icons = new List<Sprite>();
         [SerializeField] protected List<string> m_Data = new List<string>();
         [SerializeField] protected AxisLine m_AxisLine = AxisLine.defaultAxisLine;
@@ -115,6 +116,13 @@ namespace XCharts.Runtime
 
         public AxisContext context = new AxisContext();
 
+        private Action<int, string> m_OnLabelClick;
+        /// <summary>
+        /// Callback function when click on the label. Parameters: labelIndex, labelName.
+        /// ||点击文本标签回调函数。参数：labelIndex, labelName。
+        /// </summary>
+        [Since("v3.15.0")]
+        public Action<int, string> onLabelClick { internal get { return m_OnLabelClick; } set { m_OnLabelClick = value; } }
         /// <summary>
         /// Whether to show axis.
         /// ||是否显示坐标轴。
@@ -292,6 +300,17 @@ namespace XCharts.Runtime
             set { if (PropertyUtil.SetStruct(ref m_Clockwise, value)) SetAllDirty(); }
         }
         /// <summary>
+        /// Whether it is the main axis. When both X and Y axes are of the same type, the axis set to main axis will determine the orientation, 
+        /// such as horizontal bar chart and vertical bar chart.
+        /// ||是否为主轴。当XY轴类型都相同时，设置为主轴的轴会决定朝向，如横向柱图和纵向柱图。
+        /// </summary>
+        [Since("v3.15.0")]
+        public bool mainAxis
+        {
+            get { return m_MainAxis; }
+            set { if (PropertyUtil.SetStruct(ref m_MainAxis, value)) SetAllDirty(); }
+        }
+        /// <summary>
         /// Category data, available in type: 'Category' axis.
         /// ||类目数据，在类目轴（type: 'category'）中有效。
         /// </summary>
@@ -478,6 +497,7 @@ namespace XCharts.Runtime
             context.maxValue = 0;
             context.destMinValue = 0;
             context.destMaxValue = 0;
+            context.labelValueList.Clear();
         }
 
         public Axis Clone()
@@ -609,13 +629,13 @@ namespace XCharts.Runtime
             return m_Position == AxisPosition.Bottom;
         }
 
-        public bool IsNeedShowLabel(int index, int total = 0)
+        public bool IsNeedShowLabel(int index, int total = 0, string content = null)
         {
             if (total == 0)
             {
                 total = context.labelValueList.Count;
             }
-            return axisLabel.IsNeedShowLabel(index, total);
+            return axisLabel.IsNeedShowLabel(index, total, content);
         }
 
         public void SetNeedUpdateFilterData()

Runtime/Component/Axis/AxisContext.cs

@@ -120,24 +120,25 @@ namespace XCharts.Runtime
                 if (end > data.Count) end = data.Count;
             }
 
+            var minZoomRatio = (int)(data.Count * dataZoom.minZoomRatio);
             if (start != filterStart ||
                 end != filterEnd ||
-                dataZoom.minShowNum != filterMinShow ||
+                minZoomRatio != filterMinShow ||
                 isNeedUpdateFilterData)
             {
                 filterStart = start;
                 filterEnd = end;
-                filterMinShow = dataZoom.minShowNum;
+                filterMinShow = minZoomRatio;
                 isNeedUpdateFilterData = false;
 
                 if (data.Count > 0)
                 {
-                    if (range < dataZoom.minShowNum)
+                    if (range < minZoomRatio)
                     {
-                        if (dataZoom.minShowNum > data.Count)
+                        if (dataZoom.minZoomRatio > data.Count)
                             range = data.Count;
                         else
-                            range = dataZoom.minShowNum;
+                            range = minZoomRatio;
                     }
                     if (range > data.Count - start)
                         start = data.Count - range;

Runtime/Component/Axis/AxisHandler.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using UnityEngine;
+using UnityEngine.EventSystems;
 using UnityEngine.UI;
 using XCharts.Runtime;
 using XUGL;
@@ -32,6 +33,33 @@ namespace XCharts
 
         protected virtual Orient orient { get; set; }
 
+        public override void OnPointerClick(PointerEventData eventData)
+        {
+            if (component.onLabelClick == null) return;
+            var labelObjects = component.context.labelObjectList;
+            for (int i = 0; i < labelObjects.Count; i++)
+            {
+                var label = labelObjects[i];
+                if (label == null) continue;
+                if (label.InRect(chart.pointerPos))
+                {
+                    component.onLabelClick.Invoke(i, label.text.GetText());
+                    break;
+                }
+            }
+        }
+
+        // public override void DrawTop(VertexHelper vh)
+        // {
+        //     var color = Color.red;
+        //     color.a = 0.5f;
+        //     foreach (var label in component.context.labelObjectList)
+        //     {
+        //         if (label == null) continue;
+        //         UGL.DrawRectangle(vh, label.rect, color);
+        //     }
+        // }
+
         protected virtual void UpdatePointerValue(Axis axis)
         {
             var grid = chart.GetChartComponent<GridCoord>(axis.gridIndex);
@@ -253,21 +281,40 @@ namespace XCharts
             var serie = chart.GetSerie(0);
             if (isCategory && serie != null && serie.useSortData)
             {
+                var isY = axis is YAxis;
                 var showData = serie.GetDataList(dataZoom, true);
-                var isChanged = CheckSortedDataChanged(axis, showData);
+                if (CheckSortedDataChanged(axis, showData))
-                if (isChanged)
                 {
                     for (int i = 0; i < context.labelObjectList.Count; i++)
                     {
                         if (context.labelObjectList[i] != null)
                         {
                             var index = i < showData.Count ? showData[i].index : i;
-                            var text = AxisHelper.GetLabelName(axis, coordinateWidth, index, destMinValue, destMaxValue, dataZoom, forcePercent, i);
+                            var text = AxisHelper.GetLabelName(axis, coordinateWidth, index, destMinValue, destMaxValue, dataZoom, forcePercent, chart.useUtc, i);
                             context.labelObjectList[i].SetText(text);
                         }
                     }
                     SaveSortedDataIndex(axis, showData);
                 }
+                if (CheckSortedDataAnimation(axis, showData))
+                {
+                    float diff = axis.context.scaleWidth / 2;
+                    for (int i = 0; i < context.labelObjectList.Count; i++)
+                    {
+                        var labelObject = context.labelObjectList[i];
+                        if (labelObject != null)
+                        {
+                            if (i < showData.Count)
+                            {
+                                var serieData = showData[i];
+                                var pos = serieData.context.exchangePosition;
+                                if (ChartHelper.IsZeroVector(pos)) continue;
+                                var sourPos = labelObject.GetPosition();
+                                labelObject.SetPosition(isY ? new Vector3(sourPos.x, pos.y + diff) : new Vector3(pos.x + diff, sourPos.y));
+                            }
+                        }
+                    }
+                }
             }
             else
             {
@@ -275,14 +322,14 @@ namespace XCharts
                 {
                     if (context.labelObjectList[i] != null)
                     {
-                        var text = AxisHelper.GetLabelName(axis, coordinateWidth, i, destMinValue, destMaxValue, dataZoom, forcePercent);
+                        var text = AxisHelper.GetLabelName(axis, coordinateWidth, i, destMinValue, destMaxValue, dataZoom, forcePercent, chart.useUtc);
                         context.labelObjectList[i].SetText(text);
                     }
                 }
             }
         }
 
-        private bool CheckSortedDataChanged(Axis axis, List<SerieData> dataList)
+        private static bool CheckSortedDataChanged(Axis axis, List<SerieData> dataList)
         {
             if (dataList.Count != axis.context.sortedDataIndices.Count) return true;
             for (int i = 0; i < dataList.Count; i++)
@@ -292,7 +339,17 @@ namespace XCharts
             return false;
         }
 
-        private void SaveSortedDataIndex(Axis axis, List<SerieData> dataList)
+        private static bool CheckSortedDataAnimation(Axis axis, List<SerieData> dataList)
+        {
+            if (!axis.IsCategory()) return false;
+            foreach (var data in dataList)
+            {
+                if (!data.context.exchangeEnd) return true;
+            }
+            return false;
+        }
+
+        private static void SaveSortedDataIndex(Axis axis, List<SerieData> dataList)
         {
             axis.context.sortedDataIndices.Clear();
             for (int i = 0; i < dataList.Count; i++)
@@ -307,7 +364,7 @@ namespace XCharts
             {
                 var lastCount = axis.context.labelValueList.Count;
                 axis.context.tickValue = DateTimeUtil.UpdateTimeAxisDateTimeList(axis.context.labelValueList,
-                    (int)axis.context.minValue, (int)axis.context.maxValue, axis.splitNumber);
+                    axis.context.minValue, axis.context.maxValue, axis.splitNumber, axis.ceilRate, !chart.useUtc);
 
                 if (axis.context.labelValueList.Count != lastCount)
                     axis.SetAllDirty();
@@ -390,13 +447,17 @@ namespace XCharts
             return Math.Pow(10, n);
         }
 
-        internal void CheckValueLabelActive(Axis axis, int i, ChartLabel label, Vector3 pos)
+        internal void CheckValueLabelActive(Axis axis, int i, ChartLabel label, Vector3 pos, string content = null)
         {
             if (!axis.show || !axis.axisLabel.show)
             {
                 label.SetTextActive(false);
                 return;
             }
+            if (content == null)
+            {
+                content = label.text.GetText();
+            }
             if (axis.IsValue())
             {
                 if (orient == Orient.Horizonal)
@@ -404,12 +465,12 @@ namespace XCharts
                     if (i == 0)
                     {
                         var dist = GetLabelPosition(0, 1).x - pos.x;
-                        label.SetTextActive(axis.IsNeedShowLabel(i) && dist > label.text.GetPreferredWidth());
+                        label.SetTextActive(axis.IsNeedShowLabel(i, 0, content) && dist > label.text.GetPreferredWidth());
                     }
                     else if (i == axis.context.labelValueList.Count - 1)
                     {
                         var dist = pos.x - GetLabelPosition(0, i - 1).x;
-                        label.SetTextActive(axis.IsNeedShowLabel(i) && dist > label.text.GetPreferredWidth());
+                        label.SetTextActive(axis.IsNeedShowLabel(i, 0, content) && dist > label.text.GetPreferredWidth());
                     }
                 }
                 else
@@ -417,12 +478,12 @@ namespace XCharts
                     if (i == 0)
                     {
                         var dist = GetLabelPosition(0, 1).y - pos.y;
-                        label.SetTextActive(axis.IsNeedShowLabel(i) && dist > label.text.GetPreferredHeight());
+                        label.SetTextActive(axis.IsNeedShowLabel(i, 0, content) && dist > label.text.GetPreferredHeight());
                     }
                     else if (i == axis.context.labelValueList.Count - 1)
                     {
                         var dist = pos.y - GetLabelPosition(0, i - 1).y;
-                        label.SetTextActive(axis.IsNeedShowLabel(i) && dist > label.text.GetPreferredHeight());
+                        label.SetTextActive(axis.IsNeedShowLabel(i, 0, content) && dist > label.text.GetPreferredHeight());
                     }
                 }
             }
@@ -484,7 +545,6 @@ namespace XCharts
                 SerieHelper.UpdateSerieRuntimeFilterData(sortSerie);
             }
             var showData = sortSerie != null ? sortSerie.GetDataList(dataZoom, true) : null;
-            
             for (int i = 0; i < splitNumber; i++)
             {
                 var labelWidth = AxisHelper.GetScaleWidth(axis, axisLength, i + 1, dataZoom);
@@ -492,7 +552,7 @@ namespace XCharts
                 var labelName = AxisHelper.GetLabelName(axis, axisLength, sortIndex,
                     axis.context.destMinValue,
                     axis.context.destMaxValue,
-                    dataZoom, isPercentStack, i);
+                    dataZoom, isPercentStack, chart.useUtc, i);
 
                 var label = ChartHelper.AddAxisLabelObject(splitNumber, i,
                     ChartCached.GetAxisLabelName(i),
@@ -611,7 +671,7 @@ namespace XCharts
                 var labelName = AxisHelper.GetLabelName(axis, axisLength, sortIndex,
                     axis.context.destMinValue,
                     axis.context.destMaxValue,
-                    dataZoom, isPercentStack, i);
+                    dataZoom, isPercentStack, chart.useUtc, i);
 
                 var label = ChartHelper.AddAxisLabelObject(splitNumber, i,
                     ChartCached.GetAxisLabelName(i),
@@ -627,7 +687,7 @@ namespace XCharts
 
                 var pos = GetLabelPosition(totalWidth + gapWidth, i);
                 label.SetPosition(pos);
-                CheckValueLabelActive(axis, i, label, pos);
+                CheckValueLabelActive(axis, i, label, pos, labelName);
 
                 axis.context.labelObjectList.Add(label);
 
@@ -772,17 +832,19 @@ namespace XCharts
             var lineWidth = axis.axisLine.GetWidth(theme.lineWidth);
             var lineType = axis.axisLine.GetType(theme.lineType);
             var lineColor = axis.axisLine.GetColor(theme.lineColor);
+            var sExtendLength = axis.axisLine.startExtendLength;
+            var eExtendLength = axis.axisLine.endExtendLength;
 
             if (orient == Orient.Horizonal)
             {
-                var left = new Vector3(startX - lineWidth - (inverse ? offset : 0), startY);
+                var left = new Vector3(startX - lineWidth - (inverse ? offset : 0) - sExtendLength, startY);
-                var right = new Vector3(startX + axisLength + lineWidth + (!inverse ? offset : 0), startY);
+                var right = new Vector3(startX + axisLength + lineWidth + (!inverse ? offset : 0) + eExtendLength, startY);
                 ChartDrawer.DrawLineStyle(vh, lineType, lineWidth, left, right, lineColor);
             }
             else
             {
-                var bottom = new Vector3(startX, startY - lineWidth - (inverse ? offset : 0));
+                var bottom = new Vector3(startX, startY - lineWidth - (inverse ? offset : 0) - sExtendLength);
-                var top = new Vector3(startX, startY + axisLength + lineWidth + (!inverse ? offset : 0));
+                var top = new Vector3(startX, startY + axisLength + lineWidth + (!inverse ? offset : 0) + eExtendLength);
                 ChartDrawer.DrawLineStyle(vh, lineType, lineWidth, bottom, top, lineColor);
             }
         }

Runtime/Component/Axis/AxisHelper.cs

@@ -116,7 +116,7 @@ namespace XCharts.Runtime
         /// <param name="dataZoom"></param>
         /// <returns></returns>
         public static string GetLabelName(Axis axis, float coordinateWidth, int index, double minValue, double maxValue,
-            DataZoom dataZoom, bool forcePercent, int sortIndex = -1)
+            DataZoom dataZoom, bool forcePercent, bool useUtc, int sortIndex = -1)
         {
             int split = GetSplitNumber(axis, coordinateWidth, dataZoom);
             if (sortIndex == -1) sortIndex = index;
@@ -161,7 +161,7 @@ namespace XCharts.Runtime
                     return string.Empty;
 
                 var value = axis.GetLabelValue(index);
-                return axis.axisLabel.GetFormatterDateTime(sortIndex, axis.context.labelValueList.Count, value, minValue, maxValue);
+                return axis.axisLabel.GetFormatterDateTime(sortIndex, axis.context.labelValueList.Count, value, minValue, maxValue, !useUtc);
             }
             var showData = axis.GetDataList(dataZoom);
             int dataCount = showData.Count;
@@ -354,8 +354,8 @@ namespace XCharts.Runtime
                 axis.splitNumber = splitNumber;
                 return;
             }
-            if (axis.type == Axis.AxisType.Time) { }
+            if (ceilRate == 0) ceilRate = axis.ceilRate;
-            else if (axis.minMaxType == Axis.AxisMinMaxType.Custom)
+            if (axis.minMaxType == Axis.AxisMinMaxType.Custom)
             {
                 if (axis.min != 0 || axis.max != 0)
                 {
@@ -371,13 +371,19 @@ namespace XCharts.Runtime
                     }
                 }
             }
+            else if (axis.type == Axis.AxisType.Time)
+            {
+                if (ceilRate != 0)
+                {
+                    minValue = ChartHelper.GetMinCeilRate(minValue, ceilRate);
+                    maxValue = ChartHelper.GetMaxCeilRate(maxValue, ceilRate);
+                }
+            }
             else
             {
-                if (ceilRate == 0) ceilRate = axis.ceilRate;
                 switch (axis.minMaxType)
                 {
                     case Axis.AxisMinMaxType.Default:
-
                         if (minValue == 0 && maxValue == 0) { }
                         else if (minValue > 0 && maxValue > 0)
                         {
@@ -536,9 +542,9 @@ namespace XCharts.Runtime
         /// <param name="scaleWidth"></param>
         /// <param name="value"></param>
         /// <returns></returns>
-        public static float GetAxisValueLength(GridCoord grid, Axis axis, float scaleWidth, double value)
+        public static float GetAxisValueLength(GridCoord grid, Axis axis, float scaleWidth, double value, float gap = 0)
         {
-            return GetAxisPositionInternal(grid, axis, scaleWidth, value, false, true);
+            return GetAxisPositionInternal(grid, axis, scaleWidth, value, false, true, gap);
         }
 
         /// <summary>
@@ -572,10 +578,11 @@ namespace XCharts.Runtime
             }
         }
 
-        private static float GetAxisPositionInternal(GridCoord grid, Axis axis, float scaleWidth, double value, bool includeGridXY, bool realLength)
+        private static float GetAxisPositionInternal(GridCoord grid, Axis axis, float scaleWidth, double value, bool includeGridXY, bool realLength, float gap = 0)
         {
             var isY = axis is YAxis;
             var gridHeight = isY ? grid.context.height : grid.context.width;
+            gridHeight -= gap;
             var gridXY = isY ? grid.context.y : grid.context.x;
 
             if (axis.IsLog())

Runtime/Component/Axis/AxisLabel.cs

@@ -17,6 +17,7 @@ namespace XCharts.Runtime
         [SerializeField] private bool m_OnZero = false;
         [SerializeField] private bool m_ShowStartLabel = true;
         [SerializeField] private bool m_ShowEndLabel = true;
+        [SerializeField][Since("v3.15.0")] private bool m_ShowZeroLabel = true;
         [SerializeField] private TextLimit m_TextLimit = new TextLimit();
 
         /// <summary>
@@ -74,6 +75,15 @@ namespace XCharts.Runtime
             set { if (PropertyUtil.SetStruct(ref m_ShowEndLabel, value)) SetComponentDirty(); }
         }
         /// <summary>
+        /// Whether to display the zero label.
+        /// ||是否显示0刻度文本。
+        /// </summary>
+        public bool showZeroLabel
+        {
+            get { return m_ShowZeroLabel; }
+            set { if (PropertyUtil.SetStruct(ref m_ShowZeroLabel, value)) SetComponentDirty(); }
+        }
+        /// <summary>
         /// 文本限制。
         /// </summary>
         public TextLimit textLimit
@@ -118,6 +128,7 @@ namespace XCharts.Runtime
                 height = height,
                 showStartLabel = showStartLabel,
                 showEndLabel = showEndLabel,
+                showZeroLabel = showZeroLabel,
                 textLimit = textLimit.Clone()
             };
             axisLabel.textStyle.Copy(textStyle);
@@ -136,6 +147,7 @@ namespace XCharts.Runtime
             height = axisLabel.height;
             showStartLabel = axisLabel.showStartLabel;
             showEndLabel = axisLabel.showEndLabel;
+            showZeroLabel = axisLabel.showZeroLabel;
             textLimit.Copy(axisLabel.textLimit);
             textStyle.Copy(axisLabel.textStyle);
         }
@@ -171,13 +183,14 @@ namespace XCharts.Runtime
             return base.GetFormatterContent(labelIndex, totalIndex, value, minValue, maxValue, isLog);
         }
 
-        public bool IsNeedShowLabel(int index, int total)
+        public bool IsNeedShowLabel(int index, int total, string content = null)
         {
             var labelShow = show && (interval == 0 || index % (interval + 1) == 0);
             if (labelShow)
             {
                 if (!showStartLabel && index == 0) labelShow = false;
                 else if (!showEndLabel && index == total - 1) labelShow = false;
+                if (labelShow && content == "0") labelShow = showZeroLabel;
             }
             return labelShow;
         }

Runtime/Component/Axis/AxisLine.cs

@@ -10,6 +10,8 @@ namespace XCharts.Runtime
     public class AxisLine : BaseLine
     {
         [SerializeField] private bool m_OnZero;
+        [SerializeField] private float m_StartExtendLength;
+        [SerializeField] private float m_EndExtendLength;
         [SerializeField] private bool m_ShowArrow;
         [SerializeField] private ArrowStyle m_Arrow = new ArrowStyle();
 
@@ -23,6 +25,24 @@ namespace XCharts.Runtime
             set { if (PropertyUtil.SetStruct(ref m_OnZero, value)) SetVerticesDirty(); }
         }
         /// <summary>
+        /// Extend length of the axis line at the start.
+        /// ||轴线起点延长线长度。
+        /// </summary>
+        public float startExtendLength
+        {
+            get { return m_StartExtendLength; }
+            set { if (PropertyUtil.SetStruct(ref m_StartExtendLength, value)) SetVerticesDirty(); }
+        }
+        /// <summary>
+        /// Extend length of the axis line at the end.
+        /// ||轴线终点延长线长度。
+        /// </summary>
+        public float endExtendLength
+        {
+            get { return m_EndExtendLength; }
+            set { if (PropertyUtil.SetStruct(ref m_EndExtendLength, value)) SetVerticesDirty(); }
+        }
+        /// <summary>
         /// Whether to show the arrow symbol of axis.
         /// ||是否显示箭头。
         /// </summary>

Runtime/Component/Axis/RadiusAxis/RadiusAxisHandler.cs

@@ -114,7 +114,7 @@ namespace XCharts.Runtime
                 var inside = axis.axisLabel.inside;
                 var isPercentStack = SeriesHelper.IsPercentStack<Bar>(chart.series);
                 var labelName = AxisHelper.GetLabelName(axis, radius, i, axis.context.minValue, axis.context.maxValue,
-                    null, isPercentStack);
+                    null, isPercentStack, chart.useUtc);
                 var label = ChartHelper.AddAxisLabelObject(splitNumber, i, objName + i, axisObj.transform,
                     new Vector2(labelWidth, txtHig), axis, chart.theme.axis, labelName, Color.clear);
 

Runtime/Component/Child/ItemStyle.cs

@@ -16,6 +16,7 @@ namespace XCharts.Runtime
         [SerializeField][Since("v3.6.0")] private Color32 m_MarkColor;
         [SerializeField] private Color32 m_BackgroundColor;
         [SerializeField] private float m_BackgroundWidth;
+        [SerializeField][Since("v3.15.0")] private float m_BackgroundGap;
         [SerializeField] private Color32 m_CenterColor;
         [SerializeField] private float m_CenterGap;
         [SerializeField] private float m_BorderWidth = 0;
@@ -129,6 +130,15 @@ namespace XCharts.Runtime
             set { if (PropertyUtil.SetStruct(ref m_BackgroundWidth, value)) SetVerticesDirty(); }
         }
         /// <summary>
+        /// the gap between background and data item.
+        /// ||数据项背景间隙。
+        /// </summary>
+        public float backgroundGap
+        {
+            get { return m_BackgroundGap; }
+            set { if (PropertyUtil.SetStruct(ref m_BackgroundGap, value)) SetVerticesDirty(); }
+        }
+        /// <summary>
         /// 中心区域颜色。
         /// </summary>
         public Color32 centerColor

Runtime/Component/Comment/Comment.cs

@@ -5,14 +5,33 @@ using UnityEngine;
 namespace XCharts.Runtime
 {
     /// <summary>
-    /// comment of chart.
+    /// The layer of comment.
-    /// ||图表注解组件。
+    /// ||注解的显示层级。
+    /// </summary>
+    [Since("v3.15.0")]
+    public enum CommentLayer
+    {
+        /// <summary>
+        /// The comment is display under the serie.
+        /// ||注解在系列下方。
+        /// </summary>
+        Lower,
+        /// <summary>
+        /// The comment is display above the serie.
+        /// ||注解在系列上方。
+        /// </summary>
+        Upper
+    }
+    /// <summary>
+    /// comment of chart. Used to annotate special information in the chart.
+    /// ||图表注解组件。用于标注图表中的特殊信息。
     /// </summary>
     [Serializable]
     [ComponentHandler(typeof(CommentHander), true)]
     public class Comment : MainComponent, IPropertyChanged
     {
         [SerializeField] private bool m_Show = true;
+        [SerializeField][Since("v3.15.0")] private CommentLayer m_Layer = CommentLayer.Lower;
         [SerializeField] private LabelStyle m_LabelStyle = new LabelStyle();
         [SerializeField] private CommentMarkStyle m_MarkStyle;
         [SerializeField] private List<CommentItem> m_Items = new List<CommentItem>() { new CommentItem() };
@@ -23,6 +42,11 @@ namespace XCharts.Runtime
         /// </summary>
         public bool show { get { return m_Show; } set { if (PropertyUtil.SetStruct(ref m_Show, value)) SetComponentDirty(); } }
         /// <summary>
+        /// The layer of comment.
+        /// ||注解的显示层级。
+        /// </summary>
+        public CommentLayer layer { get { return m_Layer; } set { if (PropertyUtil.SetStruct(ref m_Layer, value)) SetComponentDirty(); } }
+        /// <summary>
         /// The items of comment.
         /// ||注解项。每个注解组件可以设置多个注解项。
         /// </summary>
@@ -45,7 +69,12 @@ namespace XCharts.Runtime
             get { return m_MarkStyle; }
             set { if (PropertyUtil.SetClass(ref m_MarkStyle, value)) SetVerticesDirty(); }
         }
-
+        /// <summary>
+        /// Get the label style of comment item.
+        /// ||获取注解项的文本样式。
+        /// </summary>
+        /// <param name="index">the index of item</param>
+        /// <returns></returns> 
         public LabelStyle GetLabelStyle(int index)
         {
             if (index >= 0 && index < items.Count)
@@ -55,7 +84,12 @@ namespace XCharts.Runtime
             }
             return m_LabelStyle;
         }
-
+        /// <summary>
+        /// Get the mark style of comment item.
+        /// ||获取注解项的标记样式。
+        /// </summary>
+        /// <param name="index">the index of item</param>
+        /// <returns></returns>
         public CommentMarkStyle GetMarkStyle(int index)
         {
             if (index >= 0 && index < items.Count)

Runtime/Component/Comment/CommentHander.cs

@@ -14,7 +14,7 @@ namespace XCharts.Runtime
             var comment = component;
             comment.OnChanged();
             comment.painter = null;
-            comment.refreshComponent = delegate()
+            comment.refreshComponent = delegate ()
             {
                 var objName = ChartCached.GetComponentObjectName(comment);
                 var commentObj = ChartHelper.AddObject(objName,
@@ -23,20 +23,24 @@ namespace XCharts.Runtime
                     chart.chartMaxAnchor,
                     chart.chartPivot,
                     chart.chartSizeDelta, -1, chart.childrenNodeNames);
+                var siblingIndex = comment.layer == CommentLayer.Upper
+                    ? chart.topPainter.transform.GetSiblingIndex() - 1
+                    : chart.painter.transform.GetSiblingIndex() + 1;
 
                 commentObj.SetActive(comment.show);
+                commentObj.transform.SetSiblingIndex(siblingIndex);
                 commentObj.hideFlags = chart.chartHideFlags;
                 ChartHelper.HideAllObject(commentObj);
                 for (int i = 0; i < comment.items.Count; i++)
                 {
                     var item = comment.items[i];
                     var labelStyle = comment.GetLabelStyle(i);
+                    item.location.OnChanged();
                     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, true);
-                    label.SetPosition(labelPos);
+                    label.SetPosition(labelPos + labelStyle.offset);
-                    label.text.SetLocalPosition(labelStyle.offset);
                     item.labelObject = label;
                 }
             };

Runtime/Component/Comment/CommentItem.cs

@@ -11,11 +11,11 @@ namespace XCharts.Runtime
     public class CommentItem : ChildComponent
     {
         [SerializeField] private bool m_Show = true;
-        [SerializeField] private string m_Content = "comment";
+        [SerializeField] private string m_Content = "xcharts";
         [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 };
+        [SerializeField][Since("v3.5.0")] private Location m_Location = new Location() { align = Location.Align.BottomRight, right = 0.1f, bottom = 0.05f };
 
         public ChartLabel labelObject { get; set; }
 

Runtime/Component/DataZoom/DataZoom.cs

@@ -1,3 +1,4 @@
+using System;
 using System.Collections.Generic;
 using UnityEngine;
 
@@ -81,7 +82,7 @@ namespace XCharts.Runtime
         [SerializeField] private RangeMode m_RangeMode;
         [SerializeField] private float m_Start;
         [SerializeField] private float m_End;
-        [SerializeField] private int m_MinShowNum = 2;
+        [SerializeField] private float m_MinZoomRatio = 0.2f;
         [Range(1f, 20f)]
         [SerializeField] private float m_ScrollSensitivity = 1.1f;
         [SerializeField] private Orient m_Orient = Orient.Horizonal;
@@ -336,10 +337,19 @@ namespace XCharts.Runtime
         /// Minimum number of display data. Minimum number of data displayed when DataZoom is enlarged to maximum.
         /// ||最小显示数据个数。当DataZoom放大到最大时，最小显示的数据个数。
         /// </summary>
-        public int minShowNum
+        [Obsolete("Use \"minZoomRatio\" instead", true)]
+        public float minShowNum
         {
-            get { return m_MinShowNum; }
+            set;get;
-            set { if (PropertyUtil.SetStruct(ref m_MinShowNum, value)) SetVerticesDirty(); }
+        }
+        /// <summary>
+        /// The minimum zoom ratio of dataZoom. Range 0f-1f.
+        /// ||缩放区域组件的最小缩放比例，范围0f-1f。
+        /// </summary>
+        public float minZoomRatio
+        {
+            get { return m_MinZoomRatio; }
+            set { if (PropertyUtil.SetStruct(ref m_MinZoomRatio, value)) SetVerticesDirty(); }
         }
         /// <summary>
         /// The sensitivity of dataZoom scroll.

Runtime/Component/DataZoom/DataZoomHandler.cs

@@ -215,7 +215,7 @@ namespace XCharts.Runtime
                     var grid = chart.GetGridOfDataZoom(dataZoom);
                     var start = (dataZoom.context.marqueeRect.x - grid.context.x) / grid.context.width * 100;
                     var end = (dataZoom.context.marqueeRect.x - grid.context.x + dataZoom.context.marqueeRect.width) / grid.context.width * 100;
-                    UpdateDataZoomRange(dataZoom, start, end);
+                    UpdateDataZoomRange(dataZoom, start, end, grid);
                 }
                 if (dataZoom.marqueeStyle.onEnd != null)
                 {
@@ -271,7 +271,7 @@ namespace XCharts.Runtime
                 }
                 var start = (startX - grid.context.x) / grid.context.width * 100;
                 var end = (endX - grid.context.x) / grid.context.width * 100;
-                UpdateDataZoomRange(dataZoom, start, end);
+                UpdateDataZoomRange(dataZoom, start, end, grid);
             }
         }
 
@@ -294,7 +294,7 @@ namespace XCharts.Runtime
             if ((dataZoom.supportInside && dataZoom.supportInsideScroll && grid.Contains(pos)) ||
                 dataZoom.IsInZoom(pos))
             {
-                ScaleDataZoom(dataZoom, eventData.scrollDelta.y * dataZoom.scrollSensitivity);
+                ScaleDataZoom(dataZoom, eventData.scrollDelta.y * dataZoom.scrollSensitivity, grid);
             }
         }
 
@@ -375,25 +375,27 @@ namespace XCharts.Runtime
             }
         }
 
-        private void ScaleDataZoom(DataZoom dataZoom, float delta)
+        private void ScaleDataZoom(DataZoom dataZoom, float delta, GridCoord grid = null)
         {
-            var grid = chart.GetGridOfDataZoom(dataZoom);
+            if (grid == null) grid = chart.GetGridOfDataZoom(dataZoom);
-            var deltaPercent = dataZoom.orient == Orient.Horizonal ?
+            var range = dataZoom.orient == Orient.Horizonal ? grid.context.width : grid.context.height;
-                Mathf.Abs(delta / grid.context.width * 100) :
+            var deltaPercent = Mathf.Abs(delta / range * 100);
-                Mathf.Abs(delta / grid.context.height * 100);
+            float start, end;
             if (delta > 0)
             {
-                if (dataZoom.end <= dataZoom.start)
+                if (dataZoom.end <= dataZoom.start) return;
-                    return;
+                start = dataZoom.start + deltaPercent;
-                UpdateDataZoomRange(dataZoom, dataZoom.start + deltaPercent, dataZoom.end - deltaPercent);
+                end = dataZoom.end - deltaPercent;
             }
             else
             {
-                UpdateDataZoomRange(dataZoom, dataZoom.start - deltaPercent, dataZoom.end + deltaPercent);
+                start = dataZoom.start - deltaPercent;
+                end = dataZoom.end + deltaPercent;
             }
+            UpdateDataZoomRange(dataZoom, start, end, grid);
         }
 
-        public void UpdateDataZoomRange(DataZoom dataZoom, float start, float end)
+        public void UpdateDataZoomRange(DataZoom dataZoom, float start, float end, GridCoord grid = null)
         {
             if (end > 100)
                 end = 100;
@@ -403,13 +405,26 @@ namespace XCharts.Runtime
 
             if (end < start)
                 end = start;
-            if (dataZoom.startEndFunction != null)
+
-                dataZoom.startEndFunction(ref start, ref end);
+            if(dataZoom.minZoomRatio > 0)
+            {
+                if(grid == null) grid = chart.GetGridOfDataZoom(dataZoom);
+                var range = dataZoom.orient == Orient.Horizonal ? grid.context.width : grid.context.height;
+                var minRange = dataZoom.minZoomRatio * range;
+                if (end - start < minRange / range * 100)
+                {
+                    return;
+                }
+            }
 
             if (!dataZoom.startLock)
                 dataZoom.start = start;
             if (!dataZoom.endLock)
                 dataZoom.end = end;
+
+            if (dataZoom.startEndFunction != null)
+                dataZoom.startEndFunction(ref start, ref end);
+
             m_LastStart = dataZoom.start;
             m_LastEnd = dataZoom.end;
             if (dataZoom.realtime)
@@ -444,7 +459,7 @@ namespace XCharts.Runtime
                     var tempPos1 = touch1.position;
                     var currDist = Vector2.Distance(tempPos0, tempPos1);
                     var lastDist = Vector2.Distance(m_LastTouchPos0, m_LastTouchPos1);
-                    var delta = (currDist - lastDist);
+                    var delta = currDist - lastDist;
                     ScaleDataZoom(dataZoom, delta / dataZoom.scrollSensitivity);
                     m_LastTouchPos0 = tempPos0;
                     m_LastTouchPos1 = tempPos1;
@@ -492,7 +507,6 @@ namespace XCharts.Runtime
                     }
                     else if (xAxis.IsTime())
                     {
-                        //TODO:
                         dataZoom.SetStartLabelText("");
                         dataZoom.SetEndLabelText("");
                     }

Runtime/Component/Label/LabelStyle.cs

@@ -80,6 +80,8 @@ namespace XCharts.Runtime
         [SerializeField] protected string m_NumericFormatter = "";
         [SerializeField] protected float m_Width = 0;
         [SerializeField] protected float m_Height = 0;
+        [SerializeField][Since("v3.15.0")] protected float m_FixedX = 0;
+        [SerializeField][Since("v3.15.0")] protected float m_FixedY = 0;
 
         [SerializeField] protected IconStyle m_Icon = new IconStyle();
         [SerializeField] protected ImageStyle m_Background = new ImageStyle();
@@ -288,6 +290,24 @@ namespace XCharts.Runtime
             set { if (PropertyUtil.SetStruct(ref m_AutoOffset, value)) SetAllDirty(); }
         }
         /// <summary>
+        /// the fixed x of label. When not 0, it will be fixed on the specified x value.
+        /// ||固定的X值。不为0时，会固定在指定的X值上。
+        /// </summary> 
+        public float fixedX
+        {
+            get { return m_FixedX; }
+            set { if (PropertyUtil.SetStruct(ref m_FixedX, value)) SetComponentDirty(); }
+        }
+        /// <summary>
+        /// the fixed y of label. When not 0, it will be fixed on the specified y value.
+        /// ||固定的Y值。不为0时，会固定在指定的Y值上。
+        /// </summary>
+        public float fixedY
+        {
+            get { return m_FixedY; }
+            set { if (PropertyUtil.SetStruct(ref m_FixedY, value)) SetComponentDirty(); }
+        }
+        /// <summary>
         /// the sytle of background.
         /// ||背景图样式。
         /// </summary>
@@ -375,6 +395,8 @@ namespace XCharts.Runtime
             label.m_Height = m_Height;
             label.m_NumericFormatter = m_NumericFormatter;
             label.m_AutoOffset = m_AutoOffset;
+            label.m_FixedX = m_FixedX;
+            label.m_FixedY = m_FixedY;
             label.m_Icon.Copy(m_Icon);
             label.m_Background.Copy(m_Background);
             label.m_TextPadding = m_TextPadding;
@@ -394,6 +416,8 @@ namespace XCharts.Runtime
             m_Height = label.m_Height;
             m_NumericFormatter = label.m_NumericFormatter;
             m_AutoOffset = label.m_AutoOffset;
+            m_FixedX = label.m_FixedX;
+            m_FixedY = label.m_FixedY;
             m_Icon.Copy(label.m_Icon);
             m_Background.Copy(label.m_Background);
             m_TextPadding = label.m_TextPadding;
@@ -461,10 +485,10 @@ namespace XCharts.Runtime
 
         private static bool isDateFormatter = false;
         private static string newFormatter = null;
-        public string GetFormatterDateTime(int labelIndex, int totalIndex, double value, double minValue, double maxValue)
+        public string GetFormatterDateTime(int labelIndex, int totalIndex, double value, double minValue, double maxValue, bool local)
         {
-            var timestamp = (int)value;
+            var timestamp = value;
-            var dateTime = DateTimeUtil.GetDateTime(timestamp);
+            var dateTime = DateTimeUtil.GetDateTime(timestamp, local);
             var dateString = string.Empty;
             if (string.IsNullOrEmpty(numericFormatter) || numericFormatter.Equals("f2"))
             {
@@ -477,7 +501,7 @@ namespace XCharts.Runtime
                     if (DateTimeUtil.IsDateOrTimeRegex(numericFormatter, ref isDateFormatter, ref newFormatter))
                     {
                         if (isDateFormatter)
-                            dateString = ChartCached.NumberToDateStr(timestamp, newFormatter);
+                            dateString = ChartCached.NumberToDateStr(timestamp, newFormatter, local);
                         else
                             dateString = ChartCached.NumberToTimeStr(timestamp, newFormatter);
                     }

Runtime/Component/Label/SerieLabelHelper.cs

@@ -45,7 +45,7 @@ namespace XCharts.Runtime
             {
                 var content = serieLabel.formatter;
                 FormatterHelper.ReplaceSerieLabelContent(ref content, numericFormatter, serie.dataCount, dataValue,
-                    dataTotal, serieName, dataName, dataName, color, serieData, chart, serie.index);
+                    dataTotal, serieName, dataName, dataName, color, serieData, chart, serie.index, serie.useSortData);
                 if (serieLabel.formatterFunction == null)
                     return content;
                 else
@@ -53,6 +53,22 @@ namespace XCharts.Runtime
             }
         }
 
+        public static string GetTitleFormatterContent(Serie serie, SerieData serieData,
+            int dataIndex, LabelStyle titleStyle, BaseChart chart)
+        {
+            string content;
+            if (string.IsNullOrEmpty(titleStyle.formatter))
+            {
+                content = serieData.name;
+            }
+            else
+            {
+                content = titleStyle.formatter;
+                FormatterHelper.ReplaceContent(ref content, dataIndex, titleStyle.numericFormatter, serie, chart, null, serieData);
+            }
+            return content;
+        }
+
         public static void SetGaugeLabelText(Serie serie)
         {
             var serieData = serie.GetSerieData(0);

Runtime/Component/Legend/Legend.cs

@@ -79,6 +79,7 @@ namespace XCharts.Runtime
         [SerializeField] private float m_ItemGap = 10f;
         [SerializeField] private bool m_ItemAutoColor = true;
         [SerializeField] private float m_ItemOpacity = 1;
+        [SerializeField][Since("v3.15.0")] private float m_ItemInactiveOpacity = 1;
         [SerializeField] private string m_Formatter;
         [SerializeField] private LabelStyle m_LabelStyle = new LabelStyle();
         [SerializeField][Since("v3.10.0")] private TextLimit m_TextLimit = new TextLimit();
@@ -182,6 +183,15 @@ namespace XCharts.Runtime
             set { if (PropertyUtil.SetStruct(ref m_ItemOpacity, value)) SetComponentDirty(); }
         }
         /// <summary>
+        /// the opacity of item color when item is inactive.
+        /// ||图例标记的图形在非激活状态下的颜色透明度。
+        /// </summary>
+        public float itemInactiveOpacity
+        {
+            get { return m_ItemInactiveOpacity; }
+            set { if (PropertyUtil.SetStruct(ref m_ItemInactiveOpacity, value)) SetComponentDirty(); }
+        }
+        /// <summary>
         /// No longer used, the use of LabelStyle.formatter instead.
         /// ||不再使用，使用LabelStyle.formatter代替。
         /// </summary>

Runtime/Component/Legend/LegendHandler.cs

@@ -92,15 +92,15 @@ namespace XCharts.Runtime
                 {
                     if (!SeriesHelper.IsLegalLegendName(datas[i])) continue;
                     string legendName = datas[i];
-                    var serieIndex =  isAnySerieColorByData ? 0 : i;
+                    var serieIndex = isAnySerieColorByData ? 0 : i;
-                    var dataIndex =  isAnySerieColorByData ? i : 0;
+                    var dataIndex = isAnySerieColorByData ? i : 0;
                     var legendContent = GetFormatterContent(legend, dataIndex, datas[i], serieIndex);
                     if (legend.textLimit.enable)
                         legendContent = legend.textLimit.GetLimitContent(legendContent);
                     var readIndex = chart.m_LegendRealShowName.IndexOf(datas[i]);
                     var active = chart.IsActiveByLegend(datas[i]);
                     var bgColor = LegendHelper.GetIconColor(chart, legend, readIndex, datas[i], active);
-                    bgColor.a = legend.itemOpacity;
+                    bgColor.a = active ? legend.itemOpacity : legend.itemInactiveOpacity;
                     var item = LegendHelper.AddLegendItem(chart, legend, i, legendName, legendObject.transform, chart.theme,
                         legendContent, bgColor, active, readIndex);
                     legend.SetButton(legendName, item, totalLegend);

Runtime/Component/Legend/LegendHelper.cs

@@ -16,7 +16,7 @@ namespace XCharts.Runtime
                 else
                     return !ChartHelper.IsClearColor(textStyle.color) ? textStyle.color : theme.legend.textColor;
             }
-            else return theme.legend.unableColor;
+            else return theme.legend.inactiveColor;
         }
 
         public static Color GetIconColor(BaseChart chart, Legend legend, int readIndex, string legendName, bool active)
@@ -30,7 +30,7 @@ namespace XCharts.Runtime
                 else
                     return legend.GetColor(readIndex);
             }
-            else return chart.theme.legend.unableColor;
+            else return chart.theme.legend.inactiveColor;
         }
 
         public static LegendItem AddLegendItem(BaseChart chart, Legend legend, int i, string legendName, Transform parent,

Runtime/Component/Mark/MarkAreaHandler.cs

@@ -40,7 +40,7 @@ namespace XCharts.Runtime
         private void InitMarkArea(MarkArea markArea)
         {
             markArea.painter = chart.m_PainterUpper;
-            markArea.refreshComponent = delegate()
+            markArea.refreshComponent = delegate ()
             {
                 var label = ChartHelper.AddChartLabel("label", m_MarkLineLabelRoot.transform, markArea.label, chart.theme.axis,
                     component.text, Color.clear, TextAnchor.MiddleCenter);
@@ -142,31 +142,12 @@ namespace XCharts.Runtime
                     else if (data.yValue != 0)
                     {
                         data.runtimeValue = data.yValue;
-                        if (yAxis.IsCategory())
+                        return GetPosition(yAxis, grid, data.runtimeValue, start);
-                        {
-                            var pY = AxisHelper.GetAxisPosition(grid, yAxis, data.yValue, showData.Count, dataZoom);
-                            return start ?
-                                new Vector3(grid.context.x, pY) :
-                                new Vector3(grid.context.x + grid.context.width, pY);
-                        }
-                        else
-                        {
-                            return GetPosition(xAxis, yAxis, grid, data.runtimeValue, start);
-                        }
                     }
                     else
                     {
                         data.runtimeValue = data.xValue;
-                        if (xAxis.IsCategory())
+                        return GetPosition(xAxis, grid, data.xValue, start);
-                        {
-                            var pX = AxisHelper.GetAxisPosition(grid, xAxis, data.xValue, showData.Count, dataZoom);
-                            return start ? new Vector3(pX, grid.context.y + grid.context.height) :
-                                new Vector3(pX, grid.context.y);
-                        }
-                        else
-                        {
-                            return GetPosition(xAxis, yAxis, grid, data.xValue, start);
-                        }
                     }
                 default:
                     break;
@@ -178,16 +159,28 @@ namespace XCharts.Runtime
         {
             if (yAxis.IsCategory())
             {
-                var pX = AxisHelper.GetAxisPosition(grid, xAxis, value);
+                return GetPosition(xAxis, grid, value, start);
+            }
+            else
+            {
+                return GetPosition(yAxis, grid, value, start);
+            }
+        }
+
+        private Vector3 GetPosition(Axis axis, GridCoord grid, double value, bool start)
+        {
+            if (axis is XAxis)
+            {
+                var pX = AxisHelper.GetAxisPosition(grid, axis, value);
                 return start ?
                     new Vector3(pX, grid.context.y + grid.context.height) :
                     new Vector3(pX, grid.context.y);
             }
             else
             {
-                var pY = AxisHelper.GetAxisPosition(grid, yAxis, value);
+                var pY = AxisHelper.GetAxisPosition(grid, axis, value);
                 return start ?
-                    new Vector3(grid.context.x, pY + grid.context.height) :
+                    new Vector3(grid.context.x, pY) :
                     new Vector3(grid.context.x + grid.context.width, pY);
             }
         }

Runtime/Component/Mark/MarkLine.cs

@@ -4,25 +4,34 @@ using UnityEngine;
 namespace XCharts.Runtime
 {
     /// <summary>
-    /// 标线类型
+    /// Mark line type.
+    /// ||标线类型
     /// </summary>
     public enum MarkLineType
     {
-        None,
         /// <summary>
-        /// 最小值。
+        /// Custom. You can customize the xy coordinates or values. 
+        /// ||自定义。可自定义xy坐标或数值。
+        /// </summary>
+        Custom,
+        /// <summary>
+        /// Minimum value.
+        /// ||最小值。
         /// </summary>
         Min,
         /// <summary>
-        /// 最大值。
+        /// Maximum value.
+        /// ||最大值。
         /// </summary>
         Max,
         /// <summary>
-        /// 平均值。
+        /// Average value.
+        /// ||平均值。
         /// </summary>
         Average,
         /// <summary>
-        /// 中位数。
+        /// Median.
+        /// ||中位数。
         /// </summary>
         Median
     }
@@ -118,7 +127,7 @@ namespace XCharts.Runtime
     [System.Serializable]
     public class MarkLineData : ChildComponent
     {
-        [SerializeField] private MarkLineType m_Type = MarkLineType.None;
+        [SerializeField] private MarkLineType m_Type = MarkLineType.Custom;
         [SerializeField] private string m_Name;
         [SerializeField] private int m_Dimension = 1;
         [SerializeField] private float m_XPosition;
@@ -170,7 +179,7 @@ namespace XCharts.Runtime
         }
         /// <summary>
         /// The x coordinate relative to the origin, in pixels.
-        /// ||相对原点的 x 坐标，单位像素。当type为None时有效。
+        /// ||相对原点的 x 坐标，单位像素。当type为Custom时有效。
         /// </summary>
         public float xPosition
         {
@@ -179,7 +188,7 @@ namespace XCharts.Runtime
         }
         /// <summary>
         /// The y coordinate relative to the origin, in pixels.
-        /// ||相对原点的 y 坐标，单位像素。当type为None时有效。
+        /// ||相对原点的 y 坐标，单位像素。当type为Custom时有效。
         /// </summary>
         public float yPosition
         {
@@ -188,7 +197,7 @@ namespace XCharts.Runtime
         }
         /// <summary>
         /// The value specified on the X-axis. A value specified when the X-axis is the category axis represents the index of the category axis data, otherwise a specific value.
-        /// ||X轴上的指定值。当X轴为类目轴时指定值表示类目轴数据的索引，否则为具体的值。当type为None时有效。
+        /// ||X轴上的指定值。当X轴为类目轴时指定值表示类目轴数据的索引，否则为具体的值。当type为Custom时有效。
         /// </summary>
         public double xValue
         {
@@ -197,7 +206,7 @@ namespace XCharts.Runtime
         }
         /// <summary>
         /// That's the value on the Y-axis. The value specified when the Y axis is the category axis represents the index of the category axis data, otherwise the specific value.
-        /// ||Y轴上的指定值。当Y轴为类目轴时指定值表示类目轴数据的索引，否则为具体的值。当type为None时有效。
+        /// ||Y轴上的指定值。当Y轴为类目轴时指定值表示类目轴数据的索引，否则为具体的值。当type为Custom时有效。
         /// </summary>
         public double yValue
         {

Runtime/Component/Mark/MarkLineHandler.cs

@@ -146,7 +146,7 @@ namespace XCharts.Runtime
                         data.runtimeValue = SerieHelper.GetMedianData(serie, data.dimension, dataZoom);
                         GetStartEndPos(yAxis, grid, data.runtimeValue, ref sp, ref ep);
                         break;
-                    case MarkLineType.None:
+                    case MarkLineType.Custom:
                         if (data.xPosition != 0)
                         {
                             data.runtimeValue = data.xPosition;
@@ -292,18 +292,20 @@ namespace XCharts.Runtime
             switch (data.type)
             {
                 case MarkLineType.Min:
-                    var serieData = SerieHelper.GetMinSerieData(serie, data.dimension, dataZoom);
+                    var serieData = SerieHelper.GetMinSerieData(serie, data.dimension, null);
                     data.runtimeValue = serieData.GetData(data.dimension);
                     var pX = GetAxisPosition(grid, xAxis, dataZoom, serieDataCount, serieData.index);
                     var pY = GetAxisPosition(grid, yAxis, dataZoom, serieDataCount, data.runtimeValue);
-                    return new Vector3(pX, pY);
+                    //return new Vector3(pX, pY);
+                    return serieData.context.position;
                 case MarkLineType.Max:
-                    serieData = SerieHelper.GetMaxSerieData(serie, data.dimension, dataZoom);
+                    serieData = SerieHelper.GetMaxSerieData(serie, data.dimension, null);
                     data.runtimeValue = serieData.GetData(data.dimension);
                     pX = GetAxisPosition(grid, xAxis, dataZoom, serieDataCount, serieData.index);
                     pY = GetAxisPosition(grid, yAxis, dataZoom, serieDataCount, data.runtimeValue);
-                    return new Vector3(pX, pY);
+                    //return new Vector3(pX, pY);
-                case MarkLineType.None:
+                    return serieData.context.position;
+                case MarkLineType.Custom:
                     if (data.zeroPosition)
                     {
                         data.runtimeValue = 0;

Runtime/Component/Title/Title.cs

@@ -8,7 +8,7 @@ namespace XCharts.Runtime
     /// ||标题组件，包含主标题和副标题。
     /// </summary>
     [Serializable]
-    [ComponentHandler(typeof(TitleHander), true)]
+    [ComponentHandler(typeof(TitleHandler), true)]
     public class Title : MainComponent, IPropertyChanged
     {
         [SerializeField] private bool m_Show = true;

Runtime/Component/Title/TitleHandler.cs

@@ -3,7 +3,7 @@ using UnityEngine;
 namespace XCharts.Runtime
 {
     [UnityEngine.Scripting.Preserve]
-    internal sealed class TitleHander : MainComponentHandler<Title>
+    public sealed class TitleHandler : MainComponentHandler<Title>
     {
         private static readonly string s_TitleObjectName = "title";
         private static readonly string s_SubTitleObjectName = "title_sub";
@@ -14,50 +14,68 @@ namespace XCharts.Runtime
         {
             var title = component;
             title.painter = null;
-            title.refreshComponent = delegate()
+            title.refreshComponent = delegate ()
             {
                 title.OnChanged();
-                var anchorMin = title.location.runtimeAnchorMin;
+                var titleObject = AddTitleObject(chart, title, chart.theme.title, chart.m_PainterUpper.transform.GetSiblingIndex() + 1);
-                var anchorMax = title.location.runtimeAnchorMax;
-                var pivot = title.location.runtimePivot;
-                var objName = ChartCached.GetComponentObjectName(title);
-                var titleObject = ChartHelper.AddObject(objName, chart.transform, anchorMin, anchorMax,
-                    pivot, chart.chartSizeDelta, -1, chart.childrenNodeNames);
-                title.gameObject = titleObject;
-                title.gameObject.transform.SetSiblingIndex(chart.m_PainterUpper.transform.GetSiblingIndex() + 1);
-                anchorMin = title.location.runtimeAnchorMin;
-                anchorMax = title.location.runtimeAnchorMax;
-                pivot = title.location.runtimePivot;
-                var fontSize = title.labelStyle.textStyle.GetFontSize(chart.theme.title);
-                ChartHelper.UpdateRectTransform(titleObject, anchorMin, anchorMax, pivot, new Vector2(chart.chartWidth, chart.chartHeight));
-                var titlePosition = chart.GetTitlePosition(title);
-                var subTitlePosition = -new Vector3(0, fontSize + title.itemGap, 0);
 
-                titleObject.transform.localPosition = titlePosition;
+                m_LabelObject = AddTitleLabel(titleObject.transform, title, chart.theme.title, chart);
-                titleObject.hideFlags = chart.chartHideFlags;
+                m_SubLabelObject = AddSubTitleLabel(titleObject.transform, title, chart.theme.subTitle, chart);
-                ChartHelper.HideAllObject(titleObject);
 
-                m_LabelObject = ChartHelper.AddChartLabel(s_TitleObjectName, titleObject.transform, title.labelStyle, chart.theme.title,
-                    GetTitleText(title), Color.clear, title.location.runtimeTextAlignment);
-                m_LabelObject.SetActive(title.show && title.labelStyle.show, true);
-
-                m_SubLabelObject = ChartHelper.AddChartLabel(s_SubTitleObjectName, titleObject.transform, title.subLabelStyle, chart.theme.subTitle,
-                    GetSubTitleText(title), Color.clear, title.location.runtimeTextAlignment);
-                m_SubLabelObject.SetActive(title.show && title.subLabelStyle.show, true);
-                m_SubLabelObject.transform.localPosition = subTitlePosition + title.subLabelStyle.offset;
             };
             title.refreshComponent();
         }
 
+        public static GameObject AddTitleObject(BaseGraph graph, Title title, ComponentTheme componentTheme, int titleSiblingIndex, string objectName = null)
+        {
+            var anchorMin = title.location.runtimeAnchorMin;
+            var anchorMax = title.location.runtimeAnchorMax;
+            var pivot = title.location.runtimePivot;
+            var objName = objectName == null ? ChartCached.GetComponentObjectName(title) : objectName;
+            var titleObject = ChartHelper.AddObject(objName, graph.transform, anchorMin, anchorMax,
+                pivot, graph.graphSizeDelta, -1, graph.childrenNodeNames);
+            title.gameObject = titleObject;
+            title.gameObject.transform.SetSiblingIndex(titleSiblingIndex);
+            anchorMin = title.location.runtimeAnchorMin;
+            anchorMax = title.location.runtimeAnchorMax;
+            pivot = title.location.runtimePivot;
+
+            ChartHelper.UpdateRectTransform(titleObject, anchorMin, anchorMax, pivot, new Vector2(graph.graphWidth, graph.graphHeight));
+            var titlePosition = graph.GetTitlePosition(title);
+            titleObject.transform.localPosition = titlePosition;
+            titleObject.hideFlags = graph.chartHideFlags;
+            ChartHelper.HideAllObject(titleObject);
+            return titleObject;
+        }
+
+        public static ChartLabel AddTitleLabel(Transform parent, Title title, ComponentTheme componentTheme, BaseChart chart = null)
+        {
+            var m_LabelObject = ChartHelper.AddChartLabel(s_TitleObjectName, parent, title.labelStyle, componentTheme,
+                    GetTitleText(title, chart), Color.clear, title.location.runtimeTextAlignment);
+            m_LabelObject.SetActive(title.show && title.labelStyle.show, true);
+            return m_LabelObject;
+        }
+
+        public static ChartLabel AddSubTitleLabel(Transform parent, Title title, ComponentTheme componentTheme, BaseChart chart = null)
+        {
+            var fontSize = title.labelStyle.textStyle.GetFontSize(componentTheme);
+            var subTitlePosition = -new Vector3(0, fontSize + title.itemGap, 0);
+            var m_SubLabelObject = ChartHelper.AddChartLabel(s_SubTitleObjectName, parent, title.subLabelStyle, componentTheme,
+                    GetSubTitleText(title, chart), Color.clear, title.location.runtimeTextAlignment);
+            m_SubLabelObject.SetActive(title.show && title.subLabelStyle.show, true);
+            m_SubLabelObject.transform.localPosition = subTitlePosition + title.subLabelStyle.offset;
+            return m_SubLabelObject;
+        }
+
         public override void OnSerieDataUpdate(int serieIndex)
         {
             if (m_LabelObject != null && FormatterHelper.NeedFormat(component.text))
-                m_LabelObject.SetText(GetTitleText(component));
+                m_LabelObject.SetText(GetTitleText(component, chart));
             if (m_SubLabelObject != null && FormatterHelper.NeedFormat(component.subText))
-                m_SubLabelObject.SetText(GetSubTitleText(component));
+                m_SubLabelObject.SetText(GetSubTitleText(component, chart));
         }
 
-        private string GetTitleText(Title title)
+        private static string GetTitleText(Title title, BaseChart chart)
         {
             if (FormatterHelper.NeedFormat(title.text))
             {
@@ -71,7 +89,7 @@ namespace XCharts.Runtime
             }
         }
 
-        private string GetSubTitleText(Title title)
+        private static string GetSubTitleText(Title title, BaseChart chart)
         {
             if (FormatterHelper.NeedFormat(title.subText))
             {

Runtime/Component/Tooltip/TooltipHandler.cs

@@ -255,6 +255,11 @@ namespace XCharts.Runtime
         {
             if (label == null) return;
             if (double.IsNaN(axis.context.pointerValue)) return;
+            if (!axis.show || !axis.indicatorLabel.show)
+            {
+                label.SetActive(false, false);
+                return;
+            }
             label.SetActive(true, true);
             label.SetTextActive(true);
             label.SetPosition(axis.context.pointerLabelPosition + axis.indicatorLabel.offset);
@@ -268,7 +273,7 @@ namespace XCharts.Runtime
             }
             else if (axis.IsTime())
             {
-                label.SetText(axis.indicatorLabel.GetFormatterDateTime(0, 0, axis.context.pointerValue, axis.context.minValue, axis.context.maxValue));
+                label.SetText(axis.indicatorLabel.GetFormatterDateTime(0, 0, axis.context.pointerValue, axis.context.minValue, axis.context.maxValue, !chart.useUtc));
             }
             else
             {
@@ -356,7 +361,7 @@ namespace XCharts.Runtime
                 if (isTriggerAxis)
                 {
                     var index = serie.context.dataZoomStartIndex + (int)yAxis.context.pointerValue;
-                    if(serie.useSortData) index = yAxis.context.sortedDataIndices[index];
+                    if (serie.useSortData) index = yAxis.context.sortedDataIndices[index];
                     serie.context.pointerEnter = true;
                     serie.context.pointerAxisDataIndexs.Add(index);
                     serie.context.pointerItemDataIndex = index;
@@ -376,7 +381,7 @@ namespace XCharts.Runtime
                 if (isTriggerAxis)
                 {
                     var index = serie.context.dataZoomStartIndex + (int)xAxis.context.pointerValue;
-                    if(serie.useSortData) index = xAxis.context.sortedDataIndices[index];
+                    if (serie.useSortData) index = xAxis.context.sortedDataIndices[index];
                     if (chart.isTriggerOnClick)
                     {
                         if (serie.insertDataToHead)
@@ -473,13 +478,25 @@ namespace XCharts.Runtime
             {
                 var serieData = data[i];
                 currValue = serieData.GetData(dimension);
-                if (i == 0 && i + 1 < dataCount)
+                if (i == 0)
                 {
-                    nextValue = data[i + 1].GetData(dimension);
+                    if (i + 1 < dataCount)
-                    if (axisValue <= currValue + (nextValue - currValue) / 2)
                     {
-                        serie.context.pointerAxisDataIndexs.Add(serieData.index);
+                        nextValue = data[i + 1].GetData(dimension);
-                        break;
+                        if (axisValue <= currValue + (nextValue - currValue) / 2)
+                        {
+                            serie.context.pointerAxisDataIndexs.Add(serieData.index);
+                            break;
+                        }
+                    }
+                    else
+                    {
+                        var diff = axis.context.tickValue * 0.5f;
+                        if (axisValue >= currValue - diff && axisValue <= currValue + diff)
+                        {
+                            serie.context.pointerAxisDataIndexs.Add(serieData.index);
+                            break;
+                        }
                     }
                 }
                 else if (i == dataCount - 1)
@@ -616,7 +633,21 @@ namespace XCharts.Runtime
                     var serieData = serie.GetSerieData(serie.context.pointerItemDataIndex);
                     if (serieData != null)
                     {
-                        tooltip.context.data.title = DateTimeUtil.GetDefaultDateTimeString((int)serieData.GetData(0), axisRange);
+                        var value = (int)serieData.GetData(0);
+                        if (string.IsNullOrEmpty(tooltip.titleLabelStyle.numericFormatter))
+                            tooltip.context.data.title = DateTimeUtil.GetDefaultDateTimeString(value, axisRange, !chart.useUtc);
+                        else
+                        {
+                            var dateTime = DateTimeUtil.GetDateTime(value, !chart.useUtc);
+                            try
+                            {
+                                tooltip.context.data.title = dateTime.ToString(tooltip.titleLabelStyle.numericFormatter);
+                            }
+                            catch
+                            {
+                                tooltip.context.data.title = DateTimeUtil.GetDefaultDateTimeString(value, axisRange, !chart.useUtc);
+                            }
+                        }
                     }
                 }
                 serie.handler.UpdateTooltipSerieParams(dataIndex, showCategory, category,
@@ -706,6 +737,7 @@ namespace XCharts.Runtime
 
         private void DrawXAxisIndicator(VertexHelper vh, Tooltip tooltip, GridCoord grid)
         {
+            if (!tooltip.lineStyle.show) return;
             var xAxes = chart.GetChartComponents<XAxis>();
             var lineType = tooltip.lineStyle.GetType(chart.theme.tooltip.lineType);
             var lineWidth = tooltip.lineStyle.GetWidth(chart.theme.tooltip.lineWidth);

Runtime/Component/Tooltip/TooltipHelper.cs

@@ -16,8 +16,9 @@ namespace XCharts.Runtime
                 else
                 {
                     tooltip.context.data.title = tooltip.titleFormatter;
-                    FormatterHelper.ReplaceContent(ref tooltip.context.data.title, -1,
+                    var numericFormatter = string.IsNullOrEmpty(tooltip.titleLabelStyle.numericFormatter)
-                        tooltip.numericFormatter, null, chart);
+                        ? tooltip.numericFormatter : tooltip.titleLabelStyle.numericFormatter;
+                    FormatterHelper.ReplaceContent(ref tooltip.context.data.title, -1, numericFormatter, null, chart);
                 }
             }
             for (int i = tooltip.context.data.param.Count - 1; i >= 0; i--)
@@ -56,7 +57,7 @@ namespace XCharts.Runtime
 
         public static bool IsIgnoreFormatter(string itemFormatter)
         {
-            return "-".Equals(itemFormatter) ||"{i}".Equals(itemFormatter, StringComparison.CurrentCultureIgnoreCase);
+            return "-".Equals(itemFormatter) || "{i}".Equals(itemFormatter, StringComparison.CurrentCultureIgnoreCase);
         }
 
         public static void LimitInRect(BaseChart chart, Tooltip tooltip, Rect chartRect)

Runtime/Coord/Grid/GridCoordHandler.cs

@@ -12,7 +12,7 @@ namespace XCharts.Runtime
         {
             var grid = component;
             grid.painter = chart.painter;
-            grid.refreshComponent = delegate()
+            grid.refreshComponent = delegate ()
             {
                 grid.UpdateRuntimeData(chart);
                 chart.OnCoordinateChanged();
@@ -51,6 +51,7 @@ namespace XCharts.Runtime
 
         public override void DrawBase(VertexHelper vh)
         {
+            DrawBackground(vh, component);
             if (!SeriesHelper.IsAnyClipSerie(chart.series))
             {
                 DrawCoord(vh, component);
@@ -64,7 +65,7 @@ namespace XCharts.Runtime
             }
         }
 
-        private void DrawCoord(VertexHelper vh, GridCoord grid)
+        private void DrawBackground(VertexHelper vh, GridCoord grid)
         {
             if (!grid.show) return;
             if (!ChartHelper.IsClearColor(grid.backgroundColor))
@@ -75,6 +76,11 @@ namespace XCharts.Runtime
                 var p4 = new Vector2(grid.context.x + grid.context.width, grid.context.y);
                 UGL.DrawQuadrilateral(vh, p1, p2, p3, p4, grid.backgroundColor);
             }
+        }
+
+        private void DrawCoord(VertexHelper vh, GridCoord grid)
+        {
+            if (!grid.show) return;
             if (grid.showBorder)
             {
                 var borderWidth = grid.borderWidth == 0 ? chart.theme.axis.lineWidth * 2 : grid.borderWidth;

Runtime/Helper/FormatterHelper.cs

@@ -37,7 +37,7 @@ namespace XCharts.Runtime
         /// <param name="category">选中的类目，一般用在折线图和柱状图</param>
         /// <returns></returns>
         public static bool ReplaceContent(ref string content, int dataIndex, string numericFormatter, Serie serie,
-            BaseChart chart, string colorName = null)
+            BaseChart chart, string colorName = null, SerieData serieData = null)
         {
             var foundDot = false;
             var mc = s_Regex.Matches(content);
@@ -112,7 +112,7 @@ namespace XCharts.Runtime
                     }
                     else
                     {
-                        var serieData = serie.GetSerieData(bIndex);
+                        serieData = serie.GetSerieData(bIndex);
                         content = content.Replace(old, serieData.name);
                     }
                 }
@@ -207,12 +207,17 @@ namespace XCharts.Runtime
                     }
                 }
             }
+            if (serieData != null)
+            {
+                ReplaceIndexContent(ref content, serie.useSortData ? serieData.sortIndex : serieData.index, serie.dataCount);
+            }
             content = s_RegexNewLine.Replace(content, PH_NN);
             return foundDot;
         }
 
         public static void ReplaceSerieLabelContent(ref string content, string numericFormatter, int dataCount, double value, double total,
-            string serieName, string category, string dataName, Color color, SerieData serieData, BaseChart chart = null, int serieIndex = 0)
+            string serieName, string category, string dataName, Color color, SerieData serieData, BaseChart chart = null, int serieIndex = 0,
+            bool sortData = false)
         {
             var mc = s_RegexForSerieLabel.Matches(content);
             foreach (var m in mc)
@@ -309,6 +314,10 @@ namespace XCharts.Runtime
                     }
                 }
             }
+            if (serieData != null)
+            {
+                ReplaceIndexContent(ref content, sortData ? serieData.sortIndex : serieData.index, dataCount);
+            }
             content = TrimAndReplaceLine(content);
         }
 

Runtime/Internal/BaseChart.API.cs

@@ -31,6 +31,11 @@ namespace XCharts.Runtime
             }
         }
         /// <summary>
+        /// Whether to use UTC time for the chart.
+        /// ||图表的时间是否都显示为UTC时间。
+        /// </summary>
+        public bool useUtc { get { return m_UseUtc; } set { m_UseUtc = value; } }
+        /// <summary>
         /// The theme.
         /// ||</summary>
         public ThemeStyle theme { get { return m_Theme; } set { m_Theme = value; } }
@@ -69,6 +74,7 @@ namespace XCharts.Runtime
         /// </summary>
         public Vector3 chartPosition { get { return m_ChartPosition; } }
         public Rect chartRect { get { return m_ChartRect; } }
+        public Painter topPainter { get { return m_PainterTop; } }
         /// <summary>
         /// The callback function of chart init.
         /// ||图表的初始化完成回调。
@@ -587,11 +593,6 @@ namespace XCharts.Runtime
             }
         }
 
-        public Vector3 GetTitlePosition(Title title)
-        {
-            return chartPosition + title.location.GetPosition(chartWidth, chartHeight);
-        }
-
         public int GetLegendRealShowNameIndex(string name)
         {
             return m_LegendRealShowName.IndexOf(name);

Runtime/Internal/BaseChart.Component.cs

@@ -429,6 +429,19 @@ namespace XCharts.Runtime
             return true;
         }
 
+        public Axis GetMainAxis()
+        {
+            foreach (var component in m_Components)
+            {
+                if (component is Axis)
+                {
+                    var axis = component as Axis;
+                    if (axis.show && axis.mainAxis) return axis;
+                }
+            }
+            return null;
+        }
+
         /// <summary>
         /// 纯类目轴。
         /// </summary>
@@ -483,7 +496,15 @@ namespace XCharts.Runtime
                 relativedAxis = null;
                 return false;
             }
-            var isY = yAxis.IsCategory() && !xAxis.IsCategory();
+            bool isY;
+            if (xAxis.type == yAxis.type)
+            {
+                isY = yAxis.mainAxis;
+            }
+            else
+            {
+                isY = yAxis.IsCategory() && !xAxis.IsCategory();
+            }
             if (isY)
             {
                 axis = yAxis;

Runtime/Internal/BaseChart.Custom.cs

@@ -11,33 +11,61 @@ namespace XCharts.Runtime
         public virtual void GetSeriesMinMaxValue(Axis axis, int axisIndex, out double tempMinValue, out double tempMaxValue)
         {
             var needAnimationData = !axis.context.needAnimation;
+            bool isX = false, isY = false, isZ = false;
+            tempMinValue = 0;
+            tempMaxValue = 0;
             if (axis is XAxis3D)
-            {
+                isX = true;
-                SeriesHelper.GetXMinMaxValue(this, axisIndex, axis.inverse, out tempMinValue, out tempMaxValue, false, false, needAnimationData);
-            }
             else if (axis is ZAxis3D)
             {
-                SeriesHelper.GetZMinMaxValue(this, axisIndex, axis.inverse, out tempMinValue, out tempMaxValue, false, false, needAnimationData);
+                isZ = true;
             }
             else if (axis is YAxis3D)
             {
-                SeriesHelper.GetYMinMaxValue(this, axisIndex, axis.inverse, out tempMinValue, out tempMaxValue, false, false, needAnimationData);
+                isY = true;
             }
             else if (IsAllAxisValue())
             {
-                if (axis is XAxis)
+                var mainAxis = GetMainAxis();
+                if (mainAxis == null)
                 {
-                    SeriesHelper.GetXMinMaxValue(this, axisIndex, axis.inverse, out tempMinValue, out tempMaxValue, false, false, needAnimationData);
+                    if (axis is XAxis)
+                    {
+                        isX = true;
+                    }
+                    else
+                    {
+                        isY = true;
+                    }
                 }
                 else
                 {
-                    SeriesHelper.GetYMinMaxValue(this, axisIndex, axis.inverse, out tempMinValue, out tempMaxValue, false, false, needAnimationData);
+                    if (axis == mainAxis)
+                    {
+                        isX = true;
+                    }
+                    else
+                    {
+                        isY = true;
+                    }
                 }
             }
             else
+            {
+                isY = true;
+            }
+            if (isX)
+            {
+                SeriesHelper.GetXMinMaxValue(this, axisIndex, axis.inverse, out tempMinValue, out tempMaxValue, false, false, needAnimationData);
+            }
+            else if (isY)
             {
                 SeriesHelper.GetYMinMaxValue(this, axisIndex, axis.inverse, out tempMinValue, out tempMaxValue, false, false, needAnimationData);
             }
+            else if(isZ)
+            {
+                SeriesHelper.GetZMinMaxValue(this, axisIndex, axis.inverse, out tempMinValue, out tempMaxValue, false, false, needAnimationData);
+            }
             AxisHelper.AdjustMinMaxValue(axis, ref tempMinValue, ref tempMaxValue, true);
         }
     }

Runtime/Internal/BaseChart.cs

@@ -16,6 +16,7 @@ namespace XCharts.Runtime
     public partial class BaseChart : BaseGraph, ISerializationCallbackReceiver
     {
         [SerializeField] protected string m_ChartName;
+        [SerializeField] protected bool m_UseUtc = true;
         [SerializeField] protected ThemeStyle m_Theme = new ThemeStyle();
         [SerializeField] protected Settings m_Settings;
         [SerializeField] protected DebugInfo m_DebugInfo = new DebugInfo();
@@ -204,7 +205,7 @@ namespace XCharts.Runtime
         protected override void OnValidate()
         {
             base.OnValidate();
-            foreach (var handler in m_SerieHandlers) handler.ForceUpdateSerieContext();
+            ResetChartStatus();
         }
 #endif
 
@@ -626,6 +627,8 @@ namespace XCharts.Runtime
             vh.Clear();
             var maxPainter = settings.maxPainter;
             var maxSeries = m_Series.Count;
+            if (painter == null || painter.index < 0 || painter.index >= maxPainter)
+                return;
             var rate = Mathf.CeilToInt(maxSeries * 1.0f / maxPainter);
             m_PainterUpper.Refresh();
             m_PainterTop.Refresh();

Runtime/Internal/BaseGraph.API.cs

@@ -209,15 +209,25 @@ namespace XCharts.Runtime
         /// </summary>
         /// <param name="imageType">type of image: png, jpg, exr</param>
         /// <param name="savePath">save path</param>
-        public void SaveAsImage(string imageType = "png", string savePath = "")
+        /// <param name="exportScale">export resolution scale. 1 means original size</param>
+        /// <param name="useRecursiveBackgroundColor">whether to recursively use lower-level UI background color</param>
+        public void SaveAsImage(string imageType = "png", string savePath = "", float exportScale = 1f,
+            bool useRecursiveBackgroundColor = false)
         {
-            StartCoroutine(SaveAsImageSync(imageType, savePath));
+            StartCoroutine(SaveAsImageSync(imageType, savePath, exportScale, useRecursiveBackgroundColor));
         }
 
-        private IEnumerator SaveAsImageSync(string imageType, string path)
+        private IEnumerator SaveAsImageSync(string imageType, string path, float exportScale,
+            bool useRecursiveBackgroundColor)
         {
             yield return new WaitForEndOfFrame();
-            ChartHelper.SaveAsImage(rectTransform, canvas, imageType, path);
+            ChartHelper.SaveAsImage(rectTransform, canvas, imageType, path, exportScale,
+                useRecursiveBackgroundColor);
+        }
+
+        public Vector3 GetTitlePosition(Title title)
+        {
+            return graphPosition + title.location.GetPosition(graphWidth, graphHeight);
         }
     }
 }

Runtime/Internal/Object/ChartLabel.cs

@@ -53,6 +53,11 @@ namespace XCharts.Runtime
             }
         }
 
+        public bool InRect(Vector2 local)
+        {
+            return rect.Contains(local);
+        }
+
         protected override void Awake()
         {
             raycastTarget = false;
@@ -183,6 +188,7 @@ namespace XCharts.Runtime
         public void SetPosition(Vector3 position)
         {
             transform.localPosition = position;
+            UpdateRect();
         }
 
         public void SetRectPosition(Vector3 position)
@@ -264,6 +270,45 @@ namespace XCharts.Runtime
                 m_Width = sizeDelta.x + m_PaddingLeft + m_PaddingRight;
                 m_Height = sizeDelta.y + m_PaddingTop + m_PaddingBottom;
                 objectRect.sizeDelta = new Vector2(m_Width, m_Height);
+                UpdateRect();
+            }
+        }
+
+        private void UpdateRect()
+        {
+            if (m_TextRect == null) return;
+            switch (text.alignment)
+            {
+                case TextAnchor.LowerLeft:
+                    rect = new Rect(transform.localPosition.x, transform.localPosition.y, m_Width, m_Height);
+                    break;
+                case TextAnchor.UpperLeft:
+                    rect = new Rect(transform.localPosition.x, transform.localPosition.y - m_Height, m_Width, m_Height);
+                    break;
+                case TextAnchor.MiddleLeft:
+                    rect = new Rect(transform.localPosition.x, transform.localPosition.y - m_Height / 2, m_Width, m_Height);
+                    break;
+                case TextAnchor.LowerRight:
+                    rect = new Rect(transform.localPosition.x - m_Width, transform.localPosition.y, m_Width, m_Height);
+                    break;
+                case TextAnchor.UpperRight:
+                    rect = new Rect(transform.localPosition.x - m_Width, transform.localPosition.y - m_Height, m_Width, m_Height);
+                    break;
+                case TextAnchor.MiddleRight:
+                    rect = new Rect(transform.localPosition.x - m_Width, transform.localPosition.y - m_Height / 2, m_Width, m_Height);
+                    break;
+                case TextAnchor.LowerCenter:
+                    rect = new Rect(transform.localPosition.x - m_Width / 2, transform.localPosition.y, m_Width, m_Height);
+                    break;
+                case TextAnchor.UpperCenter:
+                    rect = new Rect(transform.localPosition.x - m_Width / 2, transform.localPosition.y - m_Height, m_Width, m_Height);
+                    break;
+                case TextAnchor.MiddleCenter:
+                    rect = new Rect(transform.localPosition.x - m_Width / 2, transform.localPosition.y - m_Height / 2, m_Width, m_Height);
+                    break;
+                default:
+                    rect = new Rect(transform.localPosition.x - m_Width / 2, transform.localPosition.y - m_Height / 2, m_Width, m_Height);
+                    break;
             }
         }
 

Runtime/Internal/Painter.cs

@@ -18,7 +18,11 @@ namespace XCharts.Runtime
         protected bool m_Refresh;
         protected Action<VertexHelper, Painter> m_OnPopulateMesh;
 
-        public Action<VertexHelper, Painter> onPopulateMesh { set { m_OnPopulateMesh = value; } }
+        public Action<VertexHelper, Painter> onPopulateMesh
+        {
+            get { return m_OnPopulateMesh; }
+            set { m_OnPopulateMesh = value; }
+        }
         public int index { get { return m_Index; } set { m_Index = value; } }
         public Type type { get { return m_Type; } set { m_Type = value; } }
         public void Refresh()

Runtime/Internal/Utilities/ChartCached.cs

@@ -100,9 +100,9 @@ namespace XCharts.Runtime
             return NumberToStr(value, numericFormatter);
         }
 
-        public static string NumberToDateStr(double timestamp, string formatter)
+        public static string NumberToDateStr(double timestamp, string formatter, bool local = false)
         {
-            var dt = NumberToDateTime(timestamp);
+            var dt = NumberToDateTime(timestamp, local);
             try
             {
                 return dt.ToString(formatter, ci);
@@ -132,11 +132,11 @@ namespace XCharts.Runtime
             }                    
         }
 
-        public static DateTime NumberToDateTime(double timestamp)
+        public static DateTime NumberToDateTime(double timestamp, bool local = false)
         {
             if (!s_TimestampToDateTimeDict.ContainsKey(timestamp))
             {
-                s_TimestampToDateTimeDict[timestamp] = DateTimeUtil.GetDateTime(timestamp);
+                s_TimestampToDateTimeDict[timestamp] = DateTimeUtil.GetDateTime(timestamp, local);
             }
             return s_TimestampToDateTimeDict[timestamp];
         }
@@ -200,7 +200,7 @@ namespace XCharts.Runtime
             return s_StringIntDict[prefix][suffix];
         }
 
-        internal static string GetComponentObjectName(MainComponent component)
+        public static string GetComponentObjectName(MainComponent component)
         {
             Dictionary<int, string> dict;
             var type = component.GetType();
@@ -224,7 +224,7 @@ namespace XCharts.Runtime
             }
         }
 
-        internal static string GetAxisLabelName(int index)
+        public static string GetAxisLabelName(int index)
         {
             string name;
             if (!s_AxisLabelName.TryGetValue(index, out name))
@@ -239,12 +239,12 @@ namespace XCharts.Runtime
             }
         }
 
-        internal static string GetTypeName<T>()
+        public static string GetTypeName<T>()
         {
             return GetTypeName(typeof(T));
         }
 
-        internal static string GetTypeName(Type type)
+        public static string GetTypeName(Type type)
         {
             if (s_TypeName.ContainsKey(type)) return s_TypeName[type];
             else

Runtime/Internal/Utilities/ChartHelper.cs

@@ -6,6 +6,7 @@ using System.Text.RegularExpressions;
 using UnityEngine;
 using UnityEngine.EventSystems;
 using UnityEngine.UI;
+using XUGL;
 #if dUI_TextMeshPro
 using TMPro;
 #endif
@@ -461,7 +462,7 @@ namespace XCharts.Runtime
         {
             var textStyle = axis.axisLabel.textStyle;
             var label = AddChartLabel(name, parent, axis.axisLabel, theme, content, autoColor, autoAlignment);
-            var labelShow = axis.IsNeedShowLabel(index, total);
+            var labelShow = axis.IsNeedShowLabel(index, total, content);
             label.UpdateIcon(axis.axisLabel.icon, axis.GetIcon(index), iconDefaultColor);
             label.text.SetActive(labelShow);
             return label;
@@ -1060,34 +1061,383 @@ namespace XCharts.Runtime
         private static extern void Download(string base64str, string fileName);
 #endif
 
-        public static Texture2D SaveAsImage(RectTransform rectTransform, Canvas canvas, string imageType = "png", string path = "")
+        private static void SetLayerRecursively(GameObject obj, int layer)
+        {
+            if (obj == null) return;
+            obj.layer = layer;
+            var trans = obj.transform;
+            for (int i = 0; i < trans.childCount; i++)
+            {
+                SetLayerRecursively(trans.GetChild(i).gameObject, layer);
+            }
+        }
+
+        private static void CloneChildrenRecursively(Transform source, Transform targetParent, int layer)
+        {
+            if (source == null || targetParent == null) return;
+            for (int i = 0; i < source.childCount; i++)
+            {
+                var child = source.GetChild(i);
+                var childClone = GameObject.Instantiate(child.gameObject, targetParent, false);
+                SetLayerRecursively(childClone, layer);
+                SyncPainterCallbacks(child, childClone.transform);
+            }
+        }
+
+        private static void SyncPainterCallbacks(Transform source, Transform clone)
+        {
+            if (source == null || clone == null) return;
+            var sourcePainter = source.GetComponent<Painter>();
+            var clonePainter = clone.GetComponent<Painter>();
+            if (sourcePainter != null && clonePainter != null)
+            {
+                clonePainter.onPopulateMesh = sourcePainter.onPopulateMesh;
+                clonePainter.index = sourcePainter.index;
+                clonePainter.type = sourcePainter.type;
+                clonePainter.material = sourcePainter.material;
+                clonePainter.Refresh();
+            }
+            var count = Mathf.Min(source.childCount, clone.childCount);
+            for (int i = 0; i < count; i++)
+            {
+                SyncPainterCallbacks(source.GetChild(i), clone.GetChild(i));
+            }
+        }
+
+        private static void DestroyObject(GameObject obj)
+        {
+            if (obj == null) return;
+#if UNITY_EDITOR
+            if (!Application.isPlaying)
+                GameObject.DestroyImmediate(obj, true);
+            else
+                GameObject.Destroy(obj);
+#else
+            GameObject.Destroy(obj);
+#endif
+        }
+
+        private static byte[] EncodeImage(Texture2D tex, string imageType)
         {
-            var cam = canvas.renderMode == RenderMode.ScreenSpaceOverlay ? null : canvas.worldCamera;
-            var pos = RectTransformUtility.WorldToScreenPoint(cam, rectTransform.position);
-            var width = (int)(rectTransform.rect.width * canvas.scaleFactor);
-            var height = (int)(rectTransform.rect.height * canvas.scaleFactor);
-            var posX = pos.x + rectTransform.rect.xMin * canvas.scaleFactor;
-            var posY = pos.y + rectTransform.rect.yMin * canvas.scaleFactor;
-            var rect = new Rect(posX, posY, width, height);
-            var tex = new Texture2D(width, height, TextureFormat.ARGB32, false);
-            tex.ReadPixels(rect, 0, 0);
-            tex.Apply();
-            byte[] bytes;
             switch (imageType)
             {
                 case "png":
-                    bytes = tex.EncodeToPNG();
+                    return tex.EncodeToPNG();
-                    break;
                 case "jpg":
-                    bytes = tex.EncodeToJPG();
+                    return tex.EncodeToJPG();
-                    break;
                 case "exr":
-                    bytes = tex.EncodeToEXR();
+                    return tex.EncodeToEXR();
-                    break;
                 default:
                     Debug.LogError("SaveAsImage ERROR: not support image type:" + imageType);
                     return null;
             }
+        }
+
+        private static float[] GetChartCornerRadius(BaseChart chart, float chartWidth, float chartHeight, float scaleFactor)
+        {
+            if (chart == null || chartWidth <= 0 || chartHeight <= 0)
+                return null;
+
+            var background = chart.GetChartComponent<Background>();
+            if (background == null || background.borderStyle == null || !background.borderStyle.roundedCorner)
+                return null;
+
+            var cornerRadius = background.borderStyle.cornerRadius;
+            if (cornerRadius == null || cornerRadius.Length == 0)
+                return null;
+
+            float brLt = 0, brRt = 0, brRb = 0, brLb = 0;
+            bool needRound = false;
+            UGL.InitCornerRadius(cornerRadius, chartWidth, chartHeight, false, false,
+                ref brLt, ref brRt, ref brRb, ref brLb, ref needRound);
+
+            if (!needRound)
+                return null;
+
+            return new float[]
+            {
+                brLt * scaleFactor,
+                brRt * scaleFactor,
+                brRb * scaleFactor,
+                brLb * scaleFactor
+            };
+        }
+
+        private static float GetRoundedRectCoverage(float x, float y, float width, float height,
+            float radiusLt, float radiusRt, float radiusRb, float radiusLb, float aaWidth = 1f)
+        {
+            if (radiusLb > 0 && x < radiusLb && y < radiusLb)
+            {
+                var dx = x - radiusLb;
+                var dy = y - radiusLb;
+                var dist = Mathf.Sqrt(dx * dx + dy * dy);
+                var delta = radiusLb - dist;
+                if (delta >= aaWidth) return 1f;
+                if (delta <= -aaWidth) return 0f;
+                return Mathf.Clamp01((delta + aaWidth) / (2f * aaWidth));
+            }
+            if (radiusLt > 0 && x < radiusLt && y > height - radiusLt)
+            {
+                var dx = x - radiusLt;
+                var dy = y - (height - radiusLt);
+                var dist = Mathf.Sqrt(dx * dx + dy * dy);
+                var delta = radiusLt - dist;
+                if (delta >= aaWidth) return 1f;
+                if (delta <= -aaWidth) return 0f;
+                return Mathf.Clamp01((delta + aaWidth) / (2f * aaWidth));
+            }
+            if (radiusRt > 0 && x > width - radiusRt && y > height - radiusRt)
+            {
+                var dx = x - (width - radiusRt);
+                var dy = y - (height - radiusRt);
+                var dist = Mathf.Sqrt(dx * dx + dy * dy);
+                var delta = radiusRt - dist;
+                if (delta >= aaWidth) return 1f;
+                if (delta <= -aaWidth) return 0f;
+                return Mathf.Clamp01((delta + aaWidth) / (2f * aaWidth));
+            }
+            if (radiusRb > 0 && x > width - radiusRb && y < radiusRb)
+            {
+                var dx = x - (width - radiusRb);
+                var dy = y - radiusRb;
+                var dist = Mathf.Sqrt(dx * dx + dy * dy);
+                var delta = radiusRb - dist;
+                if (delta >= aaWidth) return 1f;
+                if (delta <= -aaWidth) return 0f;
+                return Mathf.Clamp01((delta + aaWidth) / (2f * aaWidth));
+            }
+            return 1f;
+        }
+
+        private static void ApplyRoundedCornerClip(Texture2D tex, float[] cornerRadii)
+        {
+            if (tex == null || cornerRadii == null || cornerRadii.Length < 4)
+                return;
+
+            var width = tex.width;
+            var height = tex.height;
+            if (width <= 0 || height <= 0)
+                return;
+
+            var radiusLt = Mathf.Max(0, cornerRadii[0]);
+            var radiusRt = Mathf.Max(0, cornerRadii[1]);
+            var radiusRb = Mathf.Max(0, cornerRadii[2]);
+            var radiusLb = Mathf.Max(0, cornerRadii[3]);
+            if (radiusLt <= 0 && radiusRt <= 0 && radiusRb <= 0 && radiusLb <= 0)
+                return;
+
+            var colors = tex.GetPixels32();
+            for (int y = 0; y < height; y++)
+            {
+                for (int x = 0; x < width; x++)
+                {
+                    var px = x + 0.5f;
+                    var py = y + 0.5f;
+                    var coverage = GetRoundedRectCoverage(px, py, width, height,
+                        radiusLt, radiusRt, radiusRb, radiusLb, 1f);
+                    if (coverage <= 0f)
+                    {
+                        var index = y * width + x;
+                        var color = colors[index];
+                        color.a = 0;
+                        colors[index] = color;
+                    }
+                    else if (coverage < 1f)
+                    {
+                        var index = y * width + x;
+                        var color = colors[index];
+                        color.a = (byte)Mathf.Clamp(Mathf.RoundToInt(color.a * coverage), 0, 255);
+                        colors[index] = color;
+                    }
+                }
+            }
+            tex.SetPixels32(colors);
+            tex.Apply();
+        }
+
+        private static Color32 GetBackgroundColorRecursive(Transform parent)
+        {
+            if (parent == null) return new Color32(255, 255, 255, 255);
+
+            // Try to find Image components with colors in child nodes
+            for (int i = 0; i < parent.childCount; i++)
+            {
+                var child = parent.GetChild(i);
+                var image = child.GetComponent<Image>();
+                if (image != null && image.enabled && child.gameObject.activeInHierarchy)
+                {
+                    var color = image.color;
+                    if (color.a > 0)
+                    {
+                        // Found a visible background image
+                        color.a = 1f; // Make it fully opaque for proper blending
+                        return color;
+                    }
+                }
+                // Recursively search child nodes
+                var foundColor = GetBackgroundColorRecursive(child);
+                if (foundColor.a > 0)
+                    return foundColor;
+            }
+
+            return Color.white;
+        }
+
+        public static Texture2D SaveAsImage(RectTransform rectTransform, Canvas canvas, string imageType = "png",
+            string path = "", float exportScale = 1f, bool useRecursiveBackgroundColor = false)
+        {
+            if (rectTransform == null || canvas == null)
+                return null;
+
+            var clampedExportScale = Mathf.Max(1f, exportScale);
+            var scaleFactor = canvas.scaleFactor <= 0 ? 1f : canvas.scaleFactor;
+            var outputScaleFactor = scaleFactor * clampedExportScale;
+            var width = Mathf.Max(1, Mathf.CeilToInt(rectTransform.rect.width * outputScaleFactor));
+            var height = Mathf.Max(1, Mathf.CeilToInt(rectTransform.rect.height * outputScaleFactor));
+            var chart = rectTransform.GetComponent<BaseChart>();
+            var cornerRadii = GetChartCornerRadius(chart, rectTransform.rect.width, rectTransform.rect.height, outputScaleFactor);
+
+            Texture2D tex = null;
+            var rt = RenderTexture.GetTemporary(width, height, 24, RenderTextureFormat.ARGB32);
+            var antiAliasing = QualitySettings.antiAliasing > 0 ? QualitySettings.antiAliasing : 4;
+            rt.antiAliasing = Mathf.Clamp(antiAliasing, 1, 8);
+
+            var oldActive = RenderTexture.active;
+            var captureLayer = 31;
+            var rootObj = new GameObject("xcharts_save_image_root");
+            var camObj = new GameObject("xcharts_save_image_camera");
+            var canvasObj = new GameObject("xcharts_save_image_canvas");
+            var contentObj = new GameObject("xcharts_save_image_content", typeof(RectTransform));
+
+            try
+            {
+                SetLayerRecursively(rootObj, captureLayer);
+                SetLayerRecursively(camObj, captureLayer);
+                SetLayerRecursively(canvasObj, captureLayer);
+                SetLayerRecursively(contentObj, captureLayer);
+
+                camObj.transform.SetParent(rootObj.transform, false);
+                var camera = camObj.AddComponent<Camera>();
+                camera.clearFlags = CameraClearFlags.SolidColor;
+                
+                // Get background color - try multiple sources for better results
+                Color32 bgColor = new Color32(255, 255, 255, 255);
+                var chartParent = rectTransform.parent;
+                
+                // First, try to get from chart's Background component
+                if (chart != null)
+                {
+                    bgColor = chart.GetChartBackgroundColor();
+                    //bgColor.a = 255;
+                }
+                
+                // If enabled, find background color recursively from sibling nodes
+                if (useRecursiveBackgroundColor && (bgColor.a < 255 ||
+                    (bgColor.r == 255 && bgColor.g == 255 && bgColor.b == 255)))
+                {
+                    var siblingBgColor = GetBackgroundColorRecursive(chartParent);
+                    if (siblingBgColor.a > 0)
+                        bgColor = siblingBgColor;
+                }
+                
+                camera.backgroundColor = bgColor;
+                
+                camera.cullingMask = 1 << captureLayer;
+                camera.orthographic = true;
+                camera.orthographicSize = height / 2f;
+                camera.nearClipPlane = -100;
+                camera.farClipPlane = 100;
+                camera.allowHDR = false;
+                camera.allowMSAA = rt.antiAliasing > 1;
+                camera.targetTexture = rt;
+
+                canvasObj.transform.SetParent(rootObj.transform, false);
+                var captureCanvas = canvasObj.AddComponent<Canvas>();
+                captureCanvas.renderMode = RenderMode.ScreenSpaceCamera;
+                captureCanvas.worldCamera = camera;
+                captureCanvas.planeDistance = 1;
+                captureCanvas.pixelPerfect = canvas.pixelPerfect;
+                captureCanvas.sortingOrder = 0;
+                canvasObj.AddComponent<GraphicRaycaster>();
+
+                var canvasRect = canvasObj.GetComponent<RectTransform>();
+                canvasRect.anchorMin = Vector2.zero;
+                canvasRect.anchorMax = Vector2.one;
+                canvasRect.pivot = new Vector2(0.5f, 0.5f);
+                canvasRect.anchoredPosition = Vector2.zero;
+                canvasRect.sizeDelta = new Vector2(width, height);
+
+                contentObj.transform.SetParent(canvasObj.transform, false);
+                var contentRect = contentObj.GetComponent<RectTransform>();
+                contentRect.anchorMin = new Vector2(0.5f, 0.5f);
+                contentRect.anchorMax = new Vector2(0.5f, 0.5f);
+                contentRect.pivot = rectTransform.pivot;
+                contentRect.anchoredPosition = Vector2.zero;
+                contentRect.sizeDelta = rectTransform.rect.size;
+                contentRect.localScale = new Vector3(clampedExportScale, clampedExportScale, 1f);
+
+                // Clone sibling nodes (including background layers below chart)
+                var chartSiblingIndex = rectTransform.GetSiblingIndex();
+                if (chartParent != null)
+                {
+                    for (int i = 0; i < chartParent.childCount; i++)
+                    {
+                        var sibling = chartParent.GetChild(i);
+                        // Only clone siblings below the chart (smaller sibling index)
+                        if (i < chartSiblingIndex)
+                        {
+                            var siblingClone = GameObject.Instantiate(sibling.gameObject, contentObj.transform, false);
+                            SetLayerRecursively(siblingClone, captureLayer);
+                        }
+                    }
+                }
+
+                CloneChildrenRecursively(rectTransform, contentObj.transform, captureLayer);
+
+                Canvas.ForceUpdateCanvases();
+                camera.Render();
+
+                RenderTexture.active = rt;
+
+                // If exportScale > 1 we want to save the image back to the original logical
+                // size (option B): render at higher density, then downscale to target pixels
+                // so the saved image has original width/height but higher quality.
+                if (clampedExportScale > 1f)
+                {
+                    var targetWidth = Mathf.Max(1, Mathf.CeilToInt(rectTransform.rect.width * scaleFactor));
+                    var targetHeight = Mathf.Max(1, Mathf.CeilToInt(rectTransform.rect.height * scaleFactor));
+
+                    var smallRT = RenderTexture.GetTemporary(targetWidth, targetHeight, 0, rt.format);
+                    Graphics.Blit(rt, smallRT);
+
+                    RenderTexture.active = smallRT;
+                    tex = new Texture2D(targetWidth, targetHeight, TextureFormat.ARGB32, false);
+                    tex.ReadPixels(new Rect(0, 0, targetWidth, targetHeight), 0, 0);
+                    tex.Apply();
+                    RenderTexture.ReleaseTemporary(smallRT);
+
+                    var cornerRadiiFinal = GetChartCornerRadius(chart, rectTransform.rect.width, rectTransform.rect.height, scaleFactor);
+                    ApplyRoundedCornerClip(tex, cornerRadiiFinal);
+                }
+                else
+                {
+                    tex = new Texture2D(width, height, TextureFormat.ARGB32, false);
+                    tex.ReadPixels(new Rect(0, 0, width, height), 0, 0);
+                    tex.Apply();
+                    ApplyRoundedCornerClip(tex, cornerRadii);
+                }
+            }
+            finally
+            {
+                RenderTexture.active = oldActive;
+                RenderTexture.ReleaseTemporary(rt);
+                DestroyObject(rootObj);
+            }
+
+            var bytes = EncodeImage(tex, imageType);
+            if (bytes == null)
+                return null;
+
             var fileName = rectTransform.name + "." + imageType;
 #if UNITY_WEBGL
             string base64str = Convert.ToBase64String(bytes);

Runtime/Internal/XChartsMgr.cs

@@ -21,8 +21,8 @@ namespace XCharts.Runtime
     [ExecuteInEditMode]
     public static class XChartsMgr
     {
-        public static readonly string version = "3.14.0";
+        public static readonly string version = "3.15.0";
-        public static readonly int versionDate = 20250315;
+        public static readonly int versionDate = 20260301;
         public static string fullVersion { get { return version + "-" + versionDate; } }
 
         internal static List<BaseChart> chartList = new List<BaseChart>();

Runtime/Serie/Bar/Bar.cs

@@ -8,13 +8,13 @@ namespace XCharts.Runtime
     [CoordOptions(typeof(GridCoord), typeof(PolarCoord))]
     [DefaultAnimation(AnimationType.BottomToTop)]
     [DefaultTooltip(Tooltip.Type.Shadow, Tooltip.Trigger.Axis)]
-    [SerieComponent(typeof(LabelStyle), typeof(EmphasisStyle), typeof(BlurStyle), typeof(SelectStyle))]
+    [SerieComponent(typeof(TitleStyle), typeof(LabelStyle), typeof(EmphasisStyle), typeof(BlurStyle), typeof(SelectStyle))]
-    [SerieDataComponent(typeof(ItemStyle), typeof(LabelStyle), typeof(EmphasisStyle), typeof(BlurStyle), typeof(SelectStyle))]
+    [SerieDataComponent(typeof(ItemStyle), typeof(TitleStyle), typeof(LabelStyle), typeof(EmphasisStyle), typeof(BlurStyle), typeof(SelectStyle))]
     [SerieDataExtraField("m_Ignore")]
     public class Bar : Serie, INeedSerieContainer
     {
         public override bool useSortData { get { return realtimeSort; } }
-        
+
         public int containerIndex { get; internal set; }
         public int containterInstanceId { get; internal set; }
 

Runtime/Serie/Bar/BarHandler.cs

@@ -47,12 +47,14 @@ namespace XCharts.Runtime
             {
                 switch (label.position)
                 {
+                    case LabelStyle.Position.Start:
                     case LabelStyle.Position.Bottom:
                         var center = serieData.context.areaCenter;
                         var angle = serieData.context.halfAngle;
                         var radius = serieData.context.insideRadius;
                         return ChartHelper.GetPosition(center, angle, radius);
                     case LabelStyle.Position.Top:
+                    case LabelStyle.Position.End:
                         center = serieData.context.areaCenter;
                         angle = serieData.context.halfAngle;
                         radius = serieData.context.outsideRadius;
@@ -65,6 +67,7 @@ namespace XCharts.Runtime
             {
                 switch (label.position)
                 {
+                    case LabelStyle.Position.Start:
                     case LabelStyle.Position.Bottom:
                         var center = serieData.context.rect.center;
                         if (serie.context.isHorizontal)
@@ -73,6 +76,7 @@ namespace XCharts.Runtime
                             return new Vector3(center.x, center.y - serieData.context.rect.height / 2);
                     case LabelStyle.Position.Center:
                     case LabelStyle.Position.Inside:
+                    case LabelStyle.Position.Middle:
                         return serieData.context.rect.center;
                     default:
                         return serieData.context.position;
@@ -80,6 +84,11 @@ namespace XCharts.Runtime
             }
         }
 
+        public override Vector3 GetSerieDataTitlePosition(SerieData serieData, TitleStyle titleStyle)
+        {
+            return GetSerieDataLabelPosition(serieData, titleStyle);
+        }
+
         private void UpdateSerieGridContext()
         {
             if (m_SerieGrid == null)
@@ -171,7 +180,7 @@ namespace XCharts.Runtime
 
             if (showData.Count <= 0)
                 return;
-
+            var visualMap = chart.GetVisualMapOfSerie(serie);
             var axisLength = isY ? m_SerieGrid.context.height : m_SerieGrid.context.width;
             var relativedAxisLength = isY ? m_SerieGrid.context.width : m_SerieGrid.context.height;
             var axisXY = isY ? m_SerieGrid.context.y : m_SerieGrid.context.x;
@@ -198,15 +207,24 @@ namespace XCharts.Runtime
             var dataChangeDuration = serie.animation.GetChangeDuration();
             var dataAddDuration = serie.animation.GetAdditionDuration();
             var interactDuration = serie.animation.GetInteractionDuration();
+            var exchangeDuration = serie.animation.GetExchangeDuration();
 
             var areaColor = ColorUtil.clearColor32;
             var areaToColor = ColorUtil.clearColor32;
             var interacting = false;
 
+            axis.context.scaleWidth = categoryWidth;
             serie.context.isHorizontal = isY;
             serie.containerIndex = m_SerieGrid.index;
             serie.containterInstanceId = m_SerieGrid.instanceId;
             serie.animation.InitProgress(axisXY, axisXY + axisLength);
+            var visualMapDimension = VisualMapHelper.GetDimension(visualMap, defaultDimension);
+            if (visualMap != null && visualMap.show && visualMap.autoMinMax)
+            {
+                double maxValue, minValue;
+                SerieHelper.GetMinMaxData(serie, visualMapDimension, out minValue, out maxValue);
+                VisualMapHelper.SetMinMax(visualMap, minValue, maxValue);
+            }
             for (int i = serie.minShow; i < maxCount; i++)
             {
                 var serieData = showData[i];
@@ -228,37 +246,55 @@ namespace XCharts.Runtime
                 var borderGap = relativedValue == 0 ? 0 : itemStyle.borderGap;
                 var borderGapAndWidth = borderWidth + borderGap;
                 var backgroundColor = itemStyle.backgroundColor;
+                var backgroundGap = itemStyle.backgroundGap;
 
                 if (!serieData.interact.TryGetColor(ref areaColor, ref areaToColor, ref interacting, interactDuration))
                 {
                     SerieHelper.GetItemColor(out areaColor, out areaToColor, serie, serieData, chart.theme);
+                    if (visualMap != null && visualMap.show)
+                    {
+                        var visualValue = serieData.GetData(visualMapDimension, relativedAxis.inverse);
+                        areaColor = visualMap.GetColor(visualValue);
+                        areaToColor = areaColor;
+                    }
                     serieData.interact.SetColor(ref interacting, areaColor, areaToColor);
                 }
 
                 var pX = 0f;
                 var pY = 0f;
-                UpdateXYPosition(m_SerieGrid, isY, axis, relativedAxis, i, categoryWidth, relativedCategoryWidth, barWidth, isStack, value, ref pX, ref pY);
+                var runtimeBarWidth = barWidth;
-                var barHig = 0f;
+                var runtimeGap = gap;
+                if (serie.ignoreZeroOccupy)
+                {
+                    UpdateActiveBarLayout(serie, dataZoom, i, categoryWidth, barGap, runtimeBarWidth, ref runtimeGap);
+                }
+                UpdateXYPosition(m_SerieGrid, isY, axis, relativedAxis, i, categoryWidth, relativedCategoryWidth,
+                    runtimeBarWidth, isStack, value, backgroundGap, ref pX, ref pY);
+                if (serie.useSortData)
+                {
+                    serieData.context.UpdateExchangePosition(ref pX, ref pY, exchangeDuration);
+                }
+                float barHig;
                 if (isPercentStack)
                 {
                     var valueTotal = chart.GetSerieSameStackTotalValue<Bar>(serie.stack, i, m_SerieGrid.index);
-                    barHig = valueTotal != 0 ? (float)(relativedValue / valueTotal * relativedAxisLength) : 0;
+                    barHig = valueTotal != 0 ? (float)(relativedValue / valueTotal * (relativedAxisLength - 2 * backgroundGap)) : 0;
                 }
                 else
                 {
-                    barHig = AxisHelper.GetAxisValueLength(m_SerieGrid, relativedAxis, relativedCategoryWidth, relativedValue);
+                    barHig = AxisHelper.GetAxisValueLength(m_SerieGrid, relativedAxis, relativedCategoryWidth, relativedValue, 2 * backgroundGap);
                 }
                 float currHig = AnimationStyleHelper.CheckDataAnimation(chart, serie, i, barHig);
                 Vector3 plb, plt, prt, prb, top;
-                UpdateRectPosition(m_SerieGrid, isY, relativedValue, pX, pY, gap, borderWidth, barWidth, currHig,
+                UpdateRectPosition(m_SerieGrid, isY, relativedValue, pX, pY, runtimeGap, borderWidth, runtimeBarWidth, currHig,
                     out plb, out plt, out prt, out prb, out top);
                 serieData.context.stackHeight = barHig;
                 serieData.context.position = top;
                 serieData.context.rect = Rect.MinMaxRect(plb.x + borderGapAndWidth, plb.y + borderGapAndWidth,
                     prt.x - borderGapAndWidth, prt.y - borderGapAndWidth);
                 serieData.context.backgroundRect = isY ?
-                    Rect.MinMaxRect(m_SerieGrid.context.x, plb.y, m_SerieGrid.context.x + relativedAxisLength, prt.y) :
+                    Rect.MinMaxRect(m_SerieGrid.context.x, plb.y - backgroundGap, m_SerieGrid.context.x + relativedAxisLength, prt.y + backgroundGap) :
-                    Rect.MinMaxRect(plb.x, m_SerieGrid.context.y, prb.x, m_SerieGrid.context.y + relativedAxisLength);
+                    Rect.MinMaxRect(plb.x - backgroundGap, m_SerieGrid.context.y, prb.x + backgroundGap, m_SerieGrid.context.y + relativedAxisLength);
 
                 if (!serie.clip || (serie.clip && m_SerieGrid.Contains(top)))
                 {
@@ -276,11 +312,11 @@ namespace XCharts.Runtime
                     {
                         case BarType.Normal:
                         case BarType.Capsule:
-                            DrawNormalBar(vh, serie, serieData, itemStyle, backgroundColor, gap, barWidth,
+                            DrawNormalBar(vh, serie, serieData, itemStyle, backgroundColor, runtimeGap, runtimeBarWidth,
                                 pX, pY, plb, plt, prt, prb, isY, m_SerieGrid, axis, areaColor, areaToColor, relativedValue);
                             break;
                         case BarType.Zebra:
-                            DrawZebraBar(vh, serie, serieData, itemStyle, backgroundColor, gap, barWidth,
+                            DrawZebraBar(vh, serie, serieData, itemStyle, backgroundColor, runtimeGap, runtimeBarWidth,
                                 pX, pY, plb, plt, prt, prb, isY, m_SerieGrid, axis, areaColor, areaToColor);
                             break;
                     }
@@ -301,9 +337,106 @@ namespace XCharts.Runtime
             }
         }
 
+        List<string> m_SlotOrder = new List<string>();
+        Dictionary<string, bool> m_ActiveSlot = new Dictionary<string, bool>();
+        private void UpdateActiveBarLayout(Bar currentSerie, DataZoom dataZoom, int dataIndex,
+            float categoryWidth, float barGap, float barWidth, ref float gap)
+        {
+            m_SlotOrder.Clear();
+            m_ActiveSlot.Clear();
+            for (int n = 0; n < chart.series.Count; n++)
+            {
+                var serie = chart.series[n] as Bar;
+                if (serie == null || !serie.show || serie.placeHolder)
+                    continue;
+                if (!IsSerieInGrid(serie, m_SerieGrid.index))
+                    continue;
+
+                var slotKey = GetBarSlotKey(serie);
+                if (!m_ActiveSlot.ContainsKey(slotKey))
+                {
+                    m_ActiveSlot[slotKey] = false;
+                    m_SlotOrder.Add(slotKey);
+                }
+
+                if (IsSerieDataActiveForLayout(serie, dataZoom, dataIndex))
+                {
+                    m_ActiveSlot[slotKey] = true;
+                }
+            }
+
+            var currentSlotKey = GetBarSlotKey(currentSerie);
+            if (!m_ActiveSlot.ContainsKey(currentSlotKey) || !m_ActiveSlot[currentSlotKey])
+                return;
+
+            var activeCount = 0;
+            var activeSlotIndex = -1;
+            for (int n = 0; n < m_SlotOrder.Count; n++)
+            {
+                var slotKey = m_SlotOrder[n];
+                if (!m_ActiveSlot[slotKey])
+                    continue;
+
+                if (slotKey == currentSlotKey)
+                    activeSlotIndex = activeCount;
+
+                activeCount++;
+            }
+
+            if (activeCount <= 0 || activeSlotIndex < 0)
+                return;
+
+            var actualGap = ChartHelper.GetActualValue(barGap, barWidth);
+            var totalBarWidth = barGap == -1
+                ? barWidth
+                : activeCount * barWidth + (activeCount - 1) * actualGap;
+            var offset = (categoryWidth - totalBarWidth) * 0.5f;
+            gap = barGap == -1
+                ? offset
+                : offset + activeSlotIndex * (barWidth + actualGap);
+        }
+
+        private string GetBarSlotKey(Bar serie)
+        {
+            return string.IsNullOrEmpty(serie.stack) ? "s_" + serie.index : "k_" + serie.stack;
+        }
+
+        private bool IsSerieDataActiveForLayout(Bar serie, DataZoom dataZoom, int dataIndex)
+        {
+            var dataList = serie.GetDataList(dataZoom, true);
+            if (dataList == null || dataIndex < 0 || dataIndex >= dataList.Count)
+                return false;
+
+            var serieData = dataList[dataIndex];
+            if (serieData == null || !serieData.show || serie.IsIgnoreValue(serieData))
+                return false;
+
+            if (!serie.ignoreZeroOccupy)
+                return true;
+
+            return !MathUtil.Approximately(serieData.GetData(1), 0);
+        }
+
+        private bool IsSerieInGrid(Bar serie, int gridIndex)
+        {
+            XAxis xAxis;
+            if (chart.TryGetChartComponent<XAxis>(out xAxis, serie.xAxisIndex))
+            {
+                if (xAxis.gridIndex != gridIndex)
+                    return false;
+            }
+            YAxis yAxis;
+            if (chart.TryGetChartComponent<YAxis>(out yAxis, serie.yAxisIndex))
+            {
+                if (yAxis.gridIndex != gridIndex)
+                    return false;
+            }
+            return true;
+        }
+
         private void UpdateXYPosition(GridCoord grid, bool isY, Axis axis, Axis relativedAxis, int i,
             float categoryWidth, float relativedCategoryWidth, float barWidth, bool isStack,
-            double value, ref float pX, ref float pY)
+            double value, float backgroundGap, ref float pX, ref float pY)
         {
             if (isY)
             {
@@ -320,7 +453,7 @@ namespace XCharts.Runtime
                         pY = grid.context.y + valueLen - categoryWidth * 0.5f;
                     }
                 }
-                pX = AxisHelper.GetAxisValuePosition(grid, relativedAxis, relativedCategoryWidth, 0);
+                pX = AxisHelper.GetAxisValuePosition(grid, relativedAxis, relativedCategoryWidth, 0) + backgroundGap;
                 if (isStack)
                 {
                     for (int n = 0; n < m_StackSerieData.Count - 1; n++)
@@ -342,7 +475,7 @@ namespace XCharts.Runtime
                         pX = grid.context.x + valueLen - categoryWidth * 0.5f;
                     }
                 }
-                pY = AxisHelper.GetAxisValuePosition(grid, relativedAxis, relativedCategoryWidth, 0);
+                pY = AxisHelper.GetAxisValuePosition(grid, relativedAxis, relativedCategoryWidth, 0) + backgroundGap;
                 if (isStack)
                 {
                     for (int n = 0; n < m_StackSerieData.Count - 1; n++)

Runtime/Serie/Candlestick/CandlestickHandler.cs

@@ -8,6 +8,7 @@ namespace XCharts.Runtime
     [UnityEngine.Scripting.Preserve]
     internal sealed class CandlestickHandler : SerieHandler<Candlestick>
     {
+        private GridCoord m_SerieGrid;
         public override void DrawSerie(VertexHelper vh)
         {
             DrawCandlestickSerie(vh, serie);
@@ -106,20 +107,84 @@ namespace XCharts.Runtime
             }
         }
 
+        public override void UpdateSerieContext()
+        {
+            if (m_SerieGrid == null)
+                return;
+
+            var needCheck = (chart.isPointerInChart && m_SerieGrid.IsPointerEnter() && !serie.placeHolder) || m_LegendEnter;
+            var needInteract = false;
+            if (!needCheck)
+            {
+                if (m_LastCheckContextFlag != needCheck)
+                {
+                    m_LastCheckContextFlag = needCheck;
+                    serie.context.pointerItemDataIndex = -1;
+                    serie.context.pointerEnter = false;
+                    Color32 color1, toColor1;
+                    foreach (var serieData in serie.data)
+                    {
+                        serieData.context.highlight = false;
+                        var state = SerieHelper.GetSerieState(serie, serieData, true);
+                        SerieHelper.GetItemColor(out color1, out toColor1, serie, serieData, chart.theme, state);
+                        serieData.interact.SetColor(ref needInteract, color1, toColor1);
+                    }
+                    chart.RefreshPainter(serie);
+                }
+                return;
+            }
+            m_LastCheckContextFlag = needCheck;
+            Color32 color, toColor;
+            if (m_LegendEnter)
+            {
+                serie.context.pointerEnter = true;
+                foreach (var serieData in serie.data)
+                {
+                    SerieHelper.GetItemColor(out color, out toColor, serie, serieData, chart.theme);
+                    serieData.interact.SetColor(ref needInteract, color, toColor);
+                }
+            }
+            else
+            {
+                serie.context.pointerItemDataIndex = -1;
+                serie.context.pointerEnter = false;
+                foreach (var serieData in serie.data)
+                {
+                    if (serie.context.pointerAxisDataIndexs.Contains(serieData.index) ||
+                        serieData.context.rect.Contains(chart.pointerPos))
+                    {
+                        serie.context.pointerItemDataIndex = serieData.index;
+                        serie.context.pointerEnter = true;
+                        serieData.context.highlight = true;
+                    }
+                    else
+                    {
+                        serieData.context.highlight = false;
+                    }
+                    var state = SerieHelper.GetSerieState(serie, serieData, true);
+                    SerieHelper.GetItemColor(out color, out toColor, serie, serieData, chart.theme, state);
+                    serieData.interact.SetColor(ref needInteract, color, toColor);
+                }
+            }
+            if (needInteract)
+            {
+                chart.RefreshPainter(serie);
+            }
+        }
+
         private void DrawCandlestickSerie(VertexHelper vh, Candlestick serie)
         {
             if (!serie.show) return;
             if (serie.animation.HasFadeOut()) return;
             XAxis xAxis;
             YAxis yAxis;
-            GridCoord grid;
             if (!chart.TryGetChartComponent<XAxis>(out xAxis, serie.xAxisIndex)) return;
             if (!chart.TryGetChartComponent<YAxis>(out yAxis, serie.yAxisIndex)) return;
-            if (!chart.TryGetChartComponent<GridCoord>(out grid, xAxis.gridIndex)) return;
+            if (!chart.TryGetChartComponent<GridCoord>(out m_SerieGrid, xAxis.gridIndex)) return;
             var theme = chart.theme;
             var dataZoom = chart.GetDataZoomOfAxis(xAxis);
             var showData = serie.GetDataList(dataZoom);
-            float categoryWidth = AxisHelper.GetDataWidth(xAxis, grid.context.width, showData.Count, dataZoom);
+            float categoryWidth = AxisHelper.GetDataWidth(xAxis, m_SerieGrid.context.width, showData.Count, dataZoom);
             float barWidth = serie.GetBarWidth(categoryWidth);
             float gap = (categoryWidth - barWidth) / 2;
             int maxCount = serie.maxShow > 0 ?
@@ -133,9 +198,9 @@ namespace XCharts.Runtime
             double yMinValue = yAxis.context.minValue;
             double yMaxValue = yAxis.context.maxValue;
             var isYAxis = false;
-            serie.containerIndex = grid.index;
+            serie.containerIndex = m_SerieGrid.index;
-            serie.containterInstanceId = grid.instanceId;
+            serie.containterInstanceId = m_SerieGrid.instanceId;
-            var intensive = grid.context.width / (maxCount - serie.minShow) < 0.6f;
+            var intensive = m_SerieGrid.context.width / (maxCount - serie.minShow) < 0.6f;
             for (int i = serie.minShow; i < maxCount; i++)
             {
                 var serieData = showData[i];
@@ -157,17 +222,17 @@ namespace XCharts.Runtime
                     (itemStyle.borderWidth == 0 ? theme.serie.candlestickBorderWidth :
                         itemStyle.borderWidth);
                 if (serieData.IsDataChanged()) dataChanging = true;
-                float pX = grid.context.x + i * categoryWidth;
+                float pX = xAxis.IsCategory() ? m_SerieGrid.context.x + i * categoryWidth : AxisHelper.GetAxisValuePosition(m_SerieGrid, xAxis, categoryWidth, serieData.GetData(0));
-                float zeroY = grid.context.y + yAxis.context.offset;
+                float zeroY = m_SerieGrid.context.y + yAxis.context.offset;
                 if (!xAxis.boundaryGap) pX -= categoryWidth / 2;
                 float pY = zeroY;
                 var barHig = 0f;
                 double valueTotal = yMaxValue - yMinValue;
-                var minCut = (yMinValue > 0 ? yMinValue : 0);
+                var minCut = yMinValue > 0 ? yMinValue : 0;
                 if (valueTotal != 0)
                 {
-                    barHig = (float)((close - open) / valueTotal * grid.context.height);
+                    barHig = (float)((close - open) / valueTotal * m_SerieGrid.context.height);
-                    pY += (float)((open - minCut) / valueTotal * grid.context.height);
+                    pY += (float)((open - minCut) / valueTotal * m_SerieGrid.context.height);
                 }
                 serieData.context.stackHeight = barHig;
                 float currHig = AnimationStyleHelper.CheckDataAnimation(chart, serie, i, barHig);
@@ -192,11 +257,11 @@ namespace XCharts.Runtime
                 }
                 if (serie.clip)
                 {
-                    plb = chart.ClampInGrid(grid, plb);
+                    plb = chart.ClampInGrid(m_SerieGrid, plb);
-                    plt = chart.ClampInGrid(grid, plt);
+                    plt = chart.ClampInGrid(m_SerieGrid, plt);
-                    prt = chart.ClampInGrid(grid, prt);
+                    prt = chart.ClampInGrid(m_SerieGrid, prt);
-                    prb = chart.ClampInGrid(grid, prb);
+                    prb = chart.ClampInGrid(m_SerieGrid, prb);
-                    top = chart.ClampInGrid(grid, top);
+                    top = chart.ClampInGrid(m_SerieGrid, top);
                 }
                 serie.context.dataPoints.Add(top);
                 serie.context.dataIndexs.Add(serieData.index);
@@ -209,10 +274,16 @@ namespace XCharts.Runtime
                 var itemWidth = Mathf.Abs(prt.x - plb.x);
                 var itemHeight = Mathf.Abs(plt.y - prb.y);
                 var center = new Vector3((plb.x + prt.x) / 2, (plt.y + prb.y) / 2);
-                var lowPos = new Vector3(center.x, zeroY + (float)((lowest - minCut) / valueTotal * grid.context.height));
+                var lowPos = new Vector3(center.x, zeroY + (float)((lowest - minCut) / valueTotal * m_SerieGrid.context.height));
-                var heighPos = new Vector3(center.x, zeroY + (float)((heighest - minCut) / valueTotal * grid.context.height));
+                var heighPos = new Vector3(center.x, zeroY + (float)((heighest - minCut) / valueTotal * m_SerieGrid.context.height));
                 var openCenterPos = new Vector3(center.x, prb.y);
                 var closeCenterPos = new Vector3(center.x, prt.y);
+
+                var rectMinX = Mathf.Min(plb.x, prb.x, plt.x, prt.x);
+                var rectMaxX = Mathf.Max(plb.x, prb.x, plt.x, prt.x);
+                var rectMinY = Mathf.Min(plb.y, prb.y, plt.y, prt.y, lowPos.y, heighPos.y);
+                var rectMaxY = Mathf.Max(plb.y, prb.y, plt.y, prt.y, lowPos.y, heighPos.y);
+                serieData.context.rect = new Rect(rectMinX, rectMinY, rectMaxX - rectMinX, rectMaxY - rectMinY);
                 if (intensive)
                 {
                     UGL.DrawLine(vh, lowPos, heighPos, borderWidth, borderColor);
@@ -231,7 +302,7 @@ namespace XCharts.Runtime
                             else
                             {
                                 chart.DrawClipPolygon(vh, ref prb, ref plb, ref plt, ref prt, areaColor, areaColor,
-                                    serie.clip, grid);
+                                    serie.clip, m_SerieGrid);
                             }
                             UGL.DrawBorder(vh, center, itemWidth, itemHeight, 2 * borderWidth, borderColor, 0,
                                 itemStyle.cornerRadius, isYAxis, 0.5f);

Runtime/Serie/Line/LineHandler.GridCoord.cs

@@ -100,7 +100,7 @@ namespace XCharts.Runtime
                     var serieData = serie.data[i];
                     var dist = Vector3.Distance(chart.pointerPos, serieData.context.position);
                     var size = SerieHelper.GetSysmbolSize(serie, serieData, themeSymbolSize);
-                    var highlight = dist <= size;
+                    var highlight = dist <= size * 2.5f;
                     serieData.context.highlight = highlight;
                     var state = SerieHelper.GetSerieState(serie, serieData, true);
                     size = SerieHelper.GetSysmbolSize(serie, serieData, themeSymbolSize, state);

Runtime/Serie/Pie/Pie.cs

@@ -2,6 +2,21 @@ using UnityEngine;
 
 namespace XCharts.Runtime
 {
+
+    public enum PieType
+    {
+        /// <summary>
+        /// solid pie chart - default fill style.
+        /// ||实心饼图 - 默认填充样式
+        /// </summary>
+        Solid,
+
+        /// <summary>
+        /// wireframe pie chart - only show the outline wireframe.
+        /// ||线框饼图 - 仅显示轮廓线框
+        /// </summary>
+        Wireframe
+    }
     [System.Serializable]
     [SerieConvert(typeof(Line), typeof(Bar))]
     [SerieHandler(typeof(PieHandler), true)]
@@ -12,10 +27,20 @@ namespace XCharts.Runtime
     public class Pie : Serie
     {
         [SerializeField][Since("v3.8.1")] private bool m_RadiusGradient = false;
+        [SerializeField][Since("v3.15.0")] private PieType m_PieType = PieType.Solid;
 
         public override SerieColorBy defaultColorBy { get { return SerieColorBy.Data; } }
         public override bool titleJustForSerie { get { return true; } }
 
+        /// <summary>
+        /// Pie chart type.
+        /// || 饼图类型。
+        /// </summary>
+        public PieType pieType
+        {
+            get { return m_PieType; }
+            set { if (PropertyUtil.SetStruct(ref m_PieType, value)) { SetVerticesDirty(); } }
+        }
         /// <summary>
         /// Whether to use gradient color in pie chart.
         /// || 是否开启半径方向的渐变效果。

Runtime/Serie/Pie/PieHandler.cs

@@ -271,6 +271,7 @@ namespace XCharts.Runtime
             }
             var offset = 0f;
             var interactOffset = serie.animation.interaction.GetOffset(serie.context.outsideRadius);
+            serieData.context.insideRadius = serie.context.insideRadius;
             if (serie.pieClickOffset && (serieData.selected || serieData.context.selected))
             {
                 offset += interactOffset;
@@ -358,7 +359,7 @@ namespace XCharts.Runtime
             {
                 var itemStyle = SerieHelper.GetItemStyle(serie, null);
                 var fillColor = ChartHelper.IsClearColor(itemStyle.backgroundColor) ?
-                    (Color32)chart.theme.legend.unableColor : itemStyle.backgroundColor;
+                    (Color32)chart.theme.legend.inactiveColor : itemStyle.backgroundColor;
                 UGL.DrawDoughnut(vh, serie.context.center, serie.context.insideRadius,
                     serie.context.outsideRadius, fillColor, fillColor, Color.clear, 0,
                     360, itemStyle.borderWidth, itemStyle.borderColor, serie.gap / 2, chart.settings.cicleSmoothness,
@@ -381,8 +382,6 @@ namespace XCharts.Runtime
                 var needOffset = (serie.pieClickOffset && (serieData.selected || serieData.context.selected));
                 var offsetCenter = needOffset ? serieData.context.offsetCenter : serie.context.center;
 
-                var borderWidth = itemStyle.borderWidth;
-                var borderColor = itemStyle.borderColor;
 
                 var progress = AnimationStyleHelper.CheckDataAnimation(chart, serie, n, 1);
                 var insideRadius = serieData.context.insideRadius * progress;
@@ -398,6 +397,17 @@ namespace XCharts.Runtime
                         serieData.interact.SetPosition(ref interacting, offsetCenter);
                     }
                 }
+                var borderWidth = itemStyle.borderWidth;
+                var borderColor = itemStyle.GetBorderColor(color);
+                if (serie.pieType == PieType.Wireframe)
+                {
+                    color = ColorUtil.clearColor32;
+                    toColor = ColorUtil.clearColor32;
+                    if (borderWidth <= 0)
+                    {
+                        borderWidth = 4;
+                    }
+                }
                 var drawEndDegree = serieData.context.currentAngle;
                 var needRoundCap = serie.roundCap && insideRadius > 0;
                 UGL.DrawDoughnut(vh, offsetCenter, insideRadius,
@@ -545,10 +555,11 @@ namespace XCharts.Runtime
 
             var dist = Vector2.Distance(local, serie.context.center);
             var interactOffset = serie.animation.interaction.GetOffset(serie.context.outsideRadius);
-            var maxRadius = serie.context.outsideRadius + 2 * interactOffset;
+            var maxRadius = serie.context.outsideRadius + interactOffset;
-            if (dist < serie.context.insideRadius || dist > maxRadius)
+            if (dist < serie.context.insideRadius - interactOffset || dist > maxRadius)
+            {
                 return -1;
-
+            }
             var dir = local - new Vector2(serie.context.center.x, serie.context.center.y);
             var angle = ChartHelper.GetAngle360(Vector2.up, dir);
             for (int i = 0; i < serie.data.Count; i++)
@@ -559,7 +570,8 @@ namespace XCharts.Runtime
                     var ndist = (serieData.selected || serieData.context.selected) ?
                         Vector2.Distance(local, serieData.context.offsetCenter) :
                         dist;
-                    if (ndist >= serieData.context.insideRadius && ndist <= serieData.context.outsideRadius)
+                    ndist = dist;
+                    if (ndist >= serieData.context.insideRadius - interactOffset && ndist <= serieData.context.outsideRadius)
                     {
                         return i;
                     }

Runtime/Serie/Scatter/BaseScatterHandler.cs

@@ -166,6 +166,8 @@ namespace XCharts.Runtime
                 var symbol = SerieHelper.GetSerieSymbol(serie, serieData);
                 if (!symbol.ShowSymbol(serieData.index, maxCount))
                     continue;
+                if (serie.IsIgnoreValue(serieData))
+                    continue;
 
                 var state = SerieHelper.GetSerieState(serie, serieData, true);
 

Runtime/Serie/Serie.cs

@@ -264,6 +264,7 @@ namespace XCharts.Runtime
         [SerializeField] private float m_BarGap = 0.1f;
         [SerializeField] private float m_BarZebraWidth = 4f;
         [SerializeField] private float m_BarZebraGap = 2f;
+        [SerializeField] [Since("v3.15.0")]private bool m_IgnoreZeroOccupy = false;
 
         [SerializeField] private float m_Min;
         [SerializeField] private float m_Max;
@@ -632,7 +633,8 @@ namespace XCharts.Runtime
             set { if (PropertyUtil.SetStruct(ref m_BarGap, value)) SetVerticesDirty(); }
         }
         /// <summary>
-        /// 斑马线的粗细。
+        /// The width of zebra bar. It is the width of each zebra stripe. When the value is 0, there is no zebra stripe.
+        /// ||斑马线的粗细。
         /// </summary>
         public float barZebraWidth
         {
@@ -640,13 +642,24 @@ namespace XCharts.Runtime
             set { if (PropertyUtil.SetStruct(ref m_BarZebraWidth, value < 0 ? 0 : value)) SetVerticesDirty(); }
         }
         /// <summary>
-        /// 斑马线的间距。
+        /// The gap of zebra bar. It is the distance between two zebra stripes. When the value is 0, there is no gap between stripes.
+        /// ||斑马线的间距。
         /// </summary>
         public float barZebraGap
         {
             get { return m_BarZebraGap; }
             set { if (PropertyUtil.SetStruct(ref m_BarZebraGap, value < 0 ? 0 : value)) SetVerticesDirty(); }
         }
+        /// <summary>
+        /// Whether to ignore the zero value bar occupy. When enabled, the bar with zero value will not occupy space, 
+        /// and the gap between bars will be automatically adjusted according to the actual displayed bars. Generally used in bar chart.
+        /// ||柱图是否忽略值为0的柱子占位。开启后，值为0的柱子将不会占用空间，柱子之间的间距会根据实际显示的柱子自动调整。一般用在柱状图中。
+        /// </summary>
+        public bool ignoreZeroOccupy
+        {
+            get { return m_IgnoreZeroOccupy; }
+            set { if (PropertyUtil.SetStruct(ref m_IgnoreZeroOccupy, value)) SetVerticesDirty(); }
+        }
 
         /// <summary>
         /// Whether offset when mouse click pie chart item.
@@ -1337,6 +1350,7 @@ namespace XCharts.Runtime
                 m_Data.RemoveAt(index);
                 m_NeedUpdateFilterData = true;
                 labelDirty = true;
+                titleDirty = true;
                 dataDirty = true;
             }
         }
@@ -1363,6 +1377,7 @@ namespace XCharts.Runtime
             SetVerticesDirty();
             CheckDataName(dataName);
             labelDirty = true;
+            titleDirty = true;
             dataDirty = true;
             return serieData;
         }
@@ -1377,6 +1392,8 @@ namespace XCharts.Runtime
             context.totalDataIndex++;
             SetVerticesDirty();
             dataDirty = true;
+            labelDirty = true;
+            titleDirty = true;
             m_NeedUpdateFilterData = true;
         }
 
@@ -1411,6 +1428,7 @@ namespace XCharts.Runtime
             SetVerticesDirty();
             CheckDataName(dataName);
             labelDirty = true;
+            titleDirty = true;
             return serieData;
         }
 
@@ -1443,6 +1461,7 @@ namespace XCharts.Runtime
             SetVerticesDirty();
             CheckDataName(dataName);
             labelDirty = true;
+            titleDirty = true;
             return serieData;
         }
 
@@ -1477,6 +1496,7 @@ namespace XCharts.Runtime
                 SetVerticesDirty();
                 CheckDataName(dataName);
                 labelDirty = true;
+                titleDirty = true;
                 return serieData;
             }
         }
@@ -1512,6 +1532,7 @@ namespace XCharts.Runtime
                 SetVerticesDirty();
                 CheckDataName(dataName);
                 labelDirty = true;
+                titleDirty = true;
                 return serieData;
             }
         }
@@ -1805,6 +1826,7 @@ namespace XCharts.Runtime
                 {
                     SetVerticesDirty();
                     dataDirty = true;
+                    titleDirty = true;
                 }
                 return flag;
             }

Runtime/Serie/SerieData.cs

@@ -645,11 +645,12 @@ namespace XCharts.Runtime
         /// the maxinum value.
         /// ||最大值。
         /// </summary>
-        public double GetMaxData(bool inverse = false)
+        public double GetMaxData(bool inverse = false, int startDimensionIndex = 0)
         {
             if (m_Data.Count == 0) return 0;
             var temp = double.MinValue;
-            for (int i = 0; i < m_Data.Count; i++)
+            if (startDimensionIndex < 0) startDimensionIndex = 0;
+            for (int i = startDimensionIndex; i < m_Data.Count; i++)
             {
                 var value = GetData(i, inverse);
                 if (value > temp) temp = value;
@@ -661,11 +662,12 @@ namespace XCharts.Runtime
         /// the mininum value.
         /// ||最小值。
         /// </summary>
-        public double GetMinData(bool inverse = false)
+        public double GetMinData(bool inverse = false, int startDimensionIndex = 0)
         {
             if (m_Data.Count == 0) return 0;
             var temp = double.MaxValue;
-            for (int i = 0; i < m_Data.Count; i++)
+            if (startDimensionIndex < 0) startDimensionIndex = 0;
+            for (int i = startDimensionIndex; i < m_Data.Count; i++)
             {
                 var value = GetData(i, inverse);
                 if (value < temp) temp = value;

Runtime/Serie/SerieDataContext.cs

@@ -35,6 +35,19 @@ namespace XCharts.Runtime
         public float offsetRadius;
         public float outsideRadius;
         public Vector3 position;
+        /// <summary>
+        /// is the exchange animation end.
+        /// ||交换动画是否结束。
+        /// </summary> 
+        public bool exchangeEnd;
+        /// <summary>
+        /// the current position of the exchange animation.
+        /// ||交换动画的当前位置。
+        /// </summary>
+        public Vector3 exchangePosition;
+        private float exchangeStartTime;
+        private Vector3 exchangeStartPosition;
+        private Vector3 exchangeEndPosition;
         public List<Vector3> dataPoints = new List<Vector3>();
         public List<ChartLabel> dataLabels = new List<ChartLabel>();
         public List<SerieData> children = new List<SerieData>();
@@ -77,9 +90,61 @@ namespace XCharts.Runtime
             symbol = null;
             rect = Rect.zero;
             subRect = Rect.zero;
+            exchangeEnd = true;
+            exchangeStartPosition = Vector3.zero;
+            exchangePosition = Vector3.zero;
+            exchangeEndPosition = Vector3.zero;
             children.Clear();
             dataPoints.Clear();
             dataLabels.Clear();
         }
+
+        public void UpdateExchangePosition(ref float x, ref float y, float totalTime)
+        {
+            if (exchangeEndPosition.x != x || exchangeEndPosition.y != y)
+            {
+                if (exchangeStartPosition == Vector3.zero || Time.time - exchangeStartTime < 0.1f)
+                {
+                    exchangeEnd = true;
+                    exchangeStartTime = Time.time;
+                    exchangeEndPosition.x = x;
+                    exchangeEndPosition.y = y;
+                    exchangeStartPosition = exchangeEndPosition;
+                    exchangePosition = exchangeEndPosition;
+                    return;
+                }
+                else
+                {
+                    exchangeEnd = false;
+                    exchangeStartTime = Time.time;
+                    exchangeStartPosition = exchangePosition;
+                    exchangeEndPosition.x = x;
+                    exchangeEndPosition.y = y;
+                }
+            }
+            if (exchangeStartPosition == exchangeEndPosition)
+            {
+                exchangeEnd = true;
+                exchangePosition = exchangeEndPosition;
+                x = exchangePosition.x;
+                y = exchangePosition.y;
+                return;
+            }
+            var spendTime = Time.time - exchangeStartTime;
+            totalTime /= 1000;
+            if (spendTime >= totalTime)
+            {
+                exchangeEnd = true;
+                exchangeStartPosition = exchangeEndPosition;
+                exchangePosition = exchangeEndPosition;
+                x = exchangePosition.x;
+                y = exchangePosition.y;
+                return;
+            }
+            exchangePosition = Vector3.Lerp(exchangeStartPosition, exchangeEndPosition, spendTime / totalTime);
+            x = exchangePosition.x;
+            y = exchangePosition.y;
+            return;
+        }
     }
 }

Runtime/Serie/SerieHandler.cs

@@ -59,6 +59,7 @@ namespace XCharts.Runtime
         protected GameObject m_SerieRoot;
         protected GameObject m_SerieLabelRoot;
         protected bool m_InitedLabel;
+        protected bool m_InitTitleLabel;
         protected bool m_NeedInitComponent;
         protected bool m_RefreshLabel;
         protected bool m_LastCheckContextFlag = false;
@@ -107,6 +108,7 @@ namespace XCharts.Runtime
                 m_RefreshLabel = false;
                 RefreshLabelInternal();
                 RefreshEndLabelInternal();
+                RefreshTitleLabelInternal();
             }
             if (serie.dataDirty)
             {
@@ -241,6 +243,8 @@ namespace XCharts.Runtime
         public override void InitComponent()
         {
             m_InitedLabel = false;
+            m_InitTitleLabel = false;
+
             serie.context.totalDataIndex = serie.dataCount - 1;
             InitRoot();
             InitSerieLabel();
@@ -428,23 +432,15 @@ namespace XCharts.Runtime
                 if (titleStyle != null)
                 {
                     var color = chart.GetItemColor(serie, null);
-                    var content = string.Empty;
+                    var content = SerieLabelHelper.GetTitleFormatterContent(serie, null, -1, titleStyle, chart);
-                    if (string.IsNullOrEmpty(titleStyle.formatter))
+                    var label = ChartHelper.AddChartLabel("title_0", serieTitleRoot.transform, titleStyle, chart.theme.common,
-                    {
-                        content = serie.serieName;
-                    }
-                    else
-                    {
-                        content = titleStyle.formatter;
-                        FormatterHelper.ReplaceContent(ref content, -1, titleStyle.numericFormatter, serie, chart);
-                    }
-                    var label = ChartHelper.AddChartLabel("title_" + 0, serieTitleRoot.transform, titleStyle, chart.theme.common,
                         content, color, TextAnchor.MiddleCenter);
                     serie.context.titleObject = label;
                     label.SetActive(titleStyle.show, true);
                     var labelPosition = GetSerieDataTitlePosition(null, titleStyle);
                     var offset = titleStyle.GetOffset(serie.context.insideRadius);
                     label.SetPosition(labelPosition + offset);
+                    m_InitTitleLabel = true;
                 }
             }
             else
@@ -454,17 +450,9 @@ namespace XCharts.Runtime
                     var serieData = serie.data[i];
                     var titleStyle = SerieHelper.GetTitleStyle(serie, serieData);
                     if (titleStyle == null) continue;
+                    m_InitTitleLabel = true;
                     var color = chart.GetItemColor(serie, serieData);
-                    var content = string.Empty;
+                    var content = SerieLabelHelper.GetTitleFormatterContent(serie, serieData, i, titleStyle, chart);
-                    if (string.IsNullOrEmpty(titleStyle.formatter))
-                    {
-                        content = serieData.name;
-                    }
-                    else
-                    {
-                        content = titleStyle.formatter;
-                        FormatterHelper.ReplaceContent(ref content, i, titleStyle.numericFormatter, serie, chart);
-                    }
                     var label = ChartHelper.AddChartLabel("title_" + i, serieTitleRoot.transform, titleStyle, chart.theme.common,
                         content, color, TextAnchor.MiddleCenter);
                     serieData.titleObject = label;
@@ -476,6 +464,38 @@ namespace XCharts.Runtime
             }
         }
 
+        public void RefreshTitleLabelInternal()
+        {
+            if (!m_InitTitleLabel) return;
+            if (serie.titleJustForSerie)
+            {
+                if (serie.context.titleObject != null)
+                {
+                    var titleStyle = SerieHelper.GetTitleStyle(serie, null);
+                    var labelPosition = GetSerieDataTitlePosition(null, titleStyle);
+                    var offset = titleStyle.GetOffset(serie.context.insideRadius);
+                    serie.context.titleObject.SetPosition(labelPosition + offset);
+                    var content = SerieLabelHelper.GetTitleFormatterContent(serie, null, -1, titleStyle, chart);
+                    serie.context.titleObject.SetText(content);
+                }
+            }
+            else
+            {
+                for (int i = 0; i < serie.dataCount; i++)
+                {
+                    var serieData = serie.data[i];
+                    if (serieData.titleObject == null) continue;
+                    var titleStyle = SerieHelper.GetTitleStyle(serie, serieData);
+                    if (titleStyle == null) continue;
+                    var labelPosition = GetSerieDataTitlePosition(serieData, titleStyle);
+                    var offset = titleStyle.GetOffset(serie.context.insideRadius);
+                    serieData.titleObject.SetPosition(labelPosition + offset);
+                    var content = SerieLabelHelper.GetTitleFormatterContent(serie, serieData, i, titleStyle, chart);
+                    serieData.titleObject.SetText(content);
+                }
+            }
+        }
+
         public override void RefreshLabelInternal()
         {
             if (!m_InitedLabel)
@@ -594,7 +614,7 @@ namespace XCharts.Runtime
             if (endLabelStyle == null)
                 return;
             var dataCount = serie.context.dataPoints.Count;
-            var active = endLabelStyle.show && dataCount > 0;
+            var active = endLabelStyle.show && dataCount > 0 && !ChartHelper.IsZeroVector(serie.context.lineEndPostion);
             m_EndLabel.SetActive(active);
             if (active)
             {
@@ -610,6 +630,8 @@ namespace XCharts.Runtime
         protected Vector3 UpdateLabelPosition(SerieData serieData, LabelStyle currLabel)
         {
             var labelPosition = GetSerieDataLabelPosition(serieData, currLabel);
+            if (currLabel.fixedX != 0) labelPosition.x = currLabel.fixedX;
+            if (currLabel.fixedY != 0) labelPosition.y = currLabel.fixedY;
             var offset = GetSerieDataLabelOffset(serieData, currLabel);
             serieData.labelObject.SetPosition(labelPosition + offset);
             if (currLabel.autoRotate && serieData.context.angle != 0)

Runtime/Serie/SerieHelper.cs

@@ -833,13 +833,14 @@ namespace XCharts.Runtime
             var data = serie.data;
             var startValue = min;
             var endValue = max;
+            var minZoomRatio = (int)((max-min) * dataZoom.minZoomRatio);
             if (endValue < startValue) endValue = startValue;
             if (startValue != serie.m_FilterStartValue || endValue != serie.m_FilterEndValue ||
-                dataZoom.minShowNum != serie.m_FilterMinShow || serie.m_NeedUpdateFilterData)
+                dataZoom.minZoomRatio != serie.m_FilterMinShow || serie.m_NeedUpdateFilterData)
             {
                 serie.m_FilterStartValue = startValue;
                 serie.m_FilterEndValue = endValue;
-                serie.m_FilterMinShow = dataZoom.minShowNum;
+                serie.m_FilterMinShow = minZoomRatio;
                 serie.m_NeedUpdateFilterData = false;
 
                 if (ReferenceEquals(serie.m_FilterData, data))
@@ -883,19 +884,20 @@ namespace XCharts.Runtime
                 end = start + range;
                 if (end > data.Count) end = data.Count;
             }
+            var minZoomRatio = (int)(data.Count * dataZoom.minZoomRatio);
             if (start != serie.m_FilterStart || end != serie.m_FilterEnd ||
-                dataZoom.minShowNum != serie.m_FilterMinShow || serie.m_NeedUpdateFilterData)
+                minZoomRatio != serie.m_FilterMinShow || serie.m_NeedUpdateFilterData)
             {
                 serie.m_FilterStart = start;
                 serie.m_FilterEnd = end;
-                serie.m_FilterMinShow = dataZoom.minShowNum;
+                serie.m_FilterMinShow = minZoomRatio;
                 serie.m_NeedUpdateFilterData = false;
                 if (data.Count > 0)
                 {
-                    if (range < dataZoom.minShowNum)
+                    if (range < minZoomRatio)
                     {
-                        if (dataZoom.minShowNum > data.Count) range = data.Count;
+                        if (minZoomRatio > data.Count) range = data.Count;
-                        else range = dataZoom.minShowNum;
+                        else range = minZoomRatio;
                     }
                     if (range > data.Count - start)
                         start = data.Count - range;

Runtime/Serie/SeriesHelper.cs

@@ -384,7 +384,7 @@ namespace XCharts.Runtime
                     else
                     {
                         var showData = serie.GetDataList(filterByDataZoom ? chart.GetXDataZoomOfSerie(serie) : null);
-                        if (serie is Candlestick || serie is SimplifiedCandlestick)
+                        if (dimension > 0 && (serie is Candlestick || serie is SimplifiedCandlestick))
                         {
                             foreach (var data in showData)
                             {
@@ -441,9 +441,9 @@ namespace XCharts.Runtime
                                 if (!_serieTotalValueForMinMax.ContainsKey(j))
                                     _serieTotalValueForMinMax[j] = 0;
                                 double currData = 0;
-                                if (serie is Candlestick)
+                                if (serie is Candlestick || serie is SimplifiedCandlestick)
                                 {
-                                    currData = showData[j].GetMaxData(false);
+                                    currData = showData[j].GetMaxData(false, dimension);
                                 }
                                 else
                                 {

Runtime/Theme/LegendTheme.cs

@@ -1,5 +1,6 @@
 using System;
 using UnityEngine;
+using UnityEngine.Serialization;
 #if dUI_TextMeshPro
 using TMPro;
 #endif
@@ -9,27 +10,37 @@ namespace XCharts.Runtime
     [Serializable]
     public class LegendTheme : ComponentTheme
     {
-        [SerializeField] protected Color m_UnableColor;
+        [SerializeField][FormerlySerializedAs("m_UnableColor")] protected Color m_InactiveColor;
 
         /// <summary>
         /// the color of text.
         /// ||文本颜色。
         /// </summary>
+        [Obsolete("Use inactiveColor instead.", true)]
         public Color unableColor
         {
-            get { return m_UnableColor; }
+            get { return m_InactiveColor; }
-            set { if (PropertyUtil.SetColor(ref m_UnableColor, value)) SetComponentDirty(); }
+            set { if (PropertyUtil.SetColor(ref m_InactiveColor, value)) SetComponentDirty(); }
+        }
+        /// <summary>
+        /// the color when the component is inactive.
+        /// ||非激活状态时的颜色。
+        /// </summary>
+        public Color inactiveColor
+        {
+            get { return m_InactiveColor; }
+            set { if (PropertyUtil.SetColor(ref m_InactiveColor, value)) SetComponentDirty(); }
         }
 
         public void Copy(LegendTheme theme)
         {
             base.Copy(theme);
-            m_UnableColor = theme.unableColor;
+            m_InactiveColor = theme.inactiveColor;
         }
 
         public LegendTheme(ThemeType theme) : base(theme)
         {
-            m_UnableColor = ColorUtil.GetColor("#cccccc");
+            m_InactiveColor = ColorUtil.GetColor("#cccccc");
 
         }
     }

Runtime/Utilities/DateTimeUtil.cs

@@ -1,7 +1,6 @@
 using System;
 using System.Collections.Generic;
 using System.Text.RegularExpressions;
-using UnityEngine;
 
 namespace XCharts.Runtime
 {
@@ -37,9 +36,9 @@ namespace XCharts.Runtime
 
         public static bool IsDateOrTimeRegex(string regex, ref bool date, ref string formatter)
         {
-            if(IsDateOrTimeRegex(regex))
+            if (IsDateOrTimeRegex(regex))
             {
-                if(regex == "date" || regex == "time")
+                if (regex == "date" || regex == "time")
                 {
                     date = regex == "date";
                     formatter = "";
@@ -53,24 +52,24 @@ namespace XCharts.Runtime
             return false;
         }
 
-        public static int GetTimestamp()
+        public static double GetTimestamp()
         {
-            return (int)(DateTime.Now - k_LocalDateTime1970).TotalSeconds;
+            return (DateTime.Now - k_LocalDateTime1970).TotalSeconds;
         }
 
-        public static int GetTimestamp(DateTime time, bool local = false)
+        public static double GetTimestamp(DateTime time, bool local = false)
         {
             if (local)
             {
-                return (int)(time - k_LocalDateTime1970).TotalSeconds;
+                return (time - k_LocalDateTime1970).TotalSeconds;
             }
             else
             {
-                return (int)(time - k_DateTime1970).TotalSeconds;
+                return (time - k_DateTime1970).TotalSeconds;
             }
         }
 
-        public static int GetTimestamp(string dateTime, bool local = false)
+        public static double GetTimestamp(string dateTime, bool local = false)
         {
             try
             {
@@ -83,15 +82,16 @@ namespace XCharts.Runtime
             }
         }
 
-        public static DateTime GetDateTime(double timestamp, bool local = true)
+        public static DateTime GetDateTime(double timestamp, bool local = false)
         {
-            return local ? k_LocalDateTime1970.AddSeconds(timestamp) : k_DateTime1970.AddSeconds(timestamp);
+            var dateTime = local ? k_LocalDateTime1970.AddSeconds(timestamp) : k_DateTime1970.AddSeconds(timestamp);
+            return dateTime;
         }
 
-        public static string GetDefaultDateTimeString(int timestamp, double range = 0)
+        public static string GetDefaultDateTimeString(double timestamp, double range = 0, bool local = false)
         {
             var dateString = String.Empty;
-            var dateTime = GetDateTime(timestamp);
+            var dateTime = GetDateTime(timestamp, local);
             if (range <= 0 || range >= DateTimeUtil.ONE_DAY)
             {
                 dateString = dateTime.ToString("yyyy-MM-dd");
@@ -144,76 +144,130 @@ namespace XCharts.Runtime
         /// <param name="minTimestamp"></param>
         /// <param name="maxTimestamp"></param>
         /// <param name="splitNumber"></param>
-        internal static float UpdateTimeAxisDateTimeList(List<double> list, int minTimestamp, int maxTimestamp, int splitNumber)
+        internal static float UpdateTimeAxisDateTimeList(List<double> list, double minTimestamp, double maxTimestamp, int splitNumber, double ceilRate, bool local)
         {
-            var firstValue = list.Count > 0 ? list[0] : 0;
-            var secondValue = list.Count > 1 ? list[1] : 0;
-            list.Clear();
             var range = maxTimestamp - minTimestamp;
-            if (range <= 0) return 0;
+            if (range <= 0)
-            var dtMin = DateTimeUtil.GetDateTime(minTimestamp);
-            var dtMax = DateTimeUtil.GetDateTime(maxTimestamp);
-            int tick = 0;
-            if (range >= ONE_YEAR * MIN_TIME_SPLIT_NUMBER)
             {
-                var num = splitNumber <= 0 ? GetSplitNumber(range, ONE_YEAR) : Math.Max(range / (splitNumber * ONE_YEAR), 1);
+                list.Clear();
-                var dtStart = (firstValue == 0 || secondValue == 0 || (minTimestamp > firstValue && minTimestamp > secondValue))
+                return 0;
-                    ? (new DateTime(dtMin.Year, dtMin.Month, 1).AddMonths(1))
+            }
-                    : (minTimestamp > firstValue ? DateTimeUtil.GetDateTime(secondValue) : DateTimeUtil.GetDateTime(firstValue));
+            var dtMin = GetDateTime(minTimestamp, local);
-                tick = num * 365 * 24 * 3600;
+            var dtMax = GetDateTime(maxTimestamp, local);
-                dtStart = new DateTime(dtStart.Year, dtStart.Month, 1);
+            int tick;
-                while (dtStart.Ticks < dtMax.Ticks)
+            if (ceilRate != 0)
+            {
+                var tickSecond = (int)ceilRate;
+                tick = GetTickSecond(range, 0, tickSecond);
+                var let = minTimestamp % tickSecond;
+                var defaultTimestamp = let == 0 ? minTimestamp : minTimestamp - let + tickSecond;
+                var startTimestamp = (int)GetFirstMaxValue(list, minTimestamp, defaultTimestamp);
+                while (startTimestamp > minTimestamp)
                 {
-                    list.Add(DateTimeUtil.GetTimestamp(dtStart));
+                    startTimestamp -= tick;
-                    dtStart = dtStart.AddYears(num);
                 }
-            }
+                if (startTimestamp < minTimestamp)
-            else if (range >= ONE_MONTH * MIN_TIME_SPLIT_NUMBER)
-            {
-                var num = splitNumber <= 0 ? GetSplitNumber(range, ONE_MONTH) : Math.Max(range / (splitNumber * ONE_MONTH), 1);
-                var dtStart = (firstValue == 0 || secondValue == 0 || (minTimestamp > firstValue && minTimestamp > secondValue))
-                    ? (new DateTime(dtMin.Year, dtMin.Month, 1).AddMonths(1))
-                    : (minTimestamp > firstValue ? DateTimeUtil.GetDateTime(secondValue) : DateTimeUtil.GetDateTime(firstValue));
-                dtStart = new DateTime(dtStart.Year, dtStart.Month, 1);
-                tick = num * 30 * 24 * 3600;
-                while (dtStart.Ticks < dtMax.Ticks)
                 {
-                    list.Add(DateTimeUtil.GetTimestamp(dtStart));
+                    startTimestamp += tick;
-                    dtStart = dtStart.AddMonths(num);
                 }
-            }
+                list.Clear();
-            else if (range >= ONE_DAY * MIN_TIME_SPLIT_NUMBER)
-            {
-                tick = GetTickSecond(range, splitNumber, ONE_DAY);
-                var let = minTimestamp % tick;
-                var startTimestamp = let == 0 ? minTimestamp : (minTimestamp - let) + tick;
-                AddTickTimestamp(list, startTimestamp, maxTimestamp, tick);
-            }
-            else if (range >= ONE_HOUR * MIN_TIME_SPLIT_NUMBER)
-            {
-                tick = GetTickSecond(range, splitNumber, ONE_HOUR);
-                var let = minTimestamp % tick;
-                var startTimestamp = let == 0 ? minTimestamp : (minTimestamp - let) + tick;
-                AddTickTimestamp(list, startTimestamp, maxTimestamp, tick);
-            }
-            else if (range >= ONE_MINUTE * MIN_TIME_SPLIT_NUMBER)
-            {
-                tick = GetTickSecond(range, splitNumber, ONE_MINUTE);
-                var let = minTimestamp % tick;
-                var startTimestamp = let == 0 ? minTimestamp : (minTimestamp - let) + tick;
                 AddTickTimestamp(list, startTimestamp, maxTimestamp, tick);
             }
             else
             {
-                tick = GetTickSecond(range, splitNumber, ONE_SECOND);
+                if (range >= ONE_YEAR * MIN_TIME_SPLIT_NUMBER)
-                var let = minTimestamp % tick;
+                {
-                var startTimestamp = let == 0 ? minTimestamp : (minTimestamp - let) + tick;
+                    var num = splitNumber <= 0 ? GetSplitNumber(range, ONE_YEAR) : (int)Math.Max(range / (splitNumber * ONE_YEAR), 1);
-                AddTickTimestamp(list, startTimestamp, maxTimestamp, tick);
+                    var dtStart = GetDateTime(GetFirstMaxValue(list, minTimestamp), local);
+                    dtStart = new DateTime(dtStart.Year, dtStart.Month, 1);
+                    while (dtStart > dtMin)
+                    {
+                        dtStart = dtStart.AddYears(-num);
+                    }
+                    if (dtStart < dtMin)
+                    {
+                        dtStart = dtStart.AddYears(num);
+                    }
+                    tick = num * 365 * 24 * 3600;
+                    list.Clear();
+                    while (dtStart.Ticks < dtMax.Ticks)
+                    {
+                        list.Add(DateTimeUtil.GetTimestamp(dtStart, local));
+                        dtStart = dtStart.AddYears(num);
+                    }
+                }
+                else if (range >= ONE_MONTH * MIN_TIME_SPLIT_NUMBER)
+                {
+                    var num = splitNumber <= 0 ? GetSplitNumber(range, ONE_MONTH) : (int)Math.Max(range / (splitNumber * ONE_MONTH), 1);
+                    var dtStart = GetDateTime(GetFirstMaxValue(list, minTimestamp), local);
+                    dtStart = new DateTime(dtStart.Year, dtStart.Month, 1);
+                    while (dtStart > dtMin)
+                    {
+                        dtStart = dtStart.AddMonths(-num);
+                    }
+                    if (dtStart < dtMin)
+                    {
+                        dtStart = dtStart.AddMonths(num);
+                    }
+                    tick = num * 30 * 24 * 3600;
+                    list.Clear();
+                    while (dtStart.Ticks < dtMax.Ticks)
+                    {
+                        list.Add(DateTimeUtil.GetTimestamp(dtStart, local));
+                        dtStart = dtStart.AddMonths(num);
+                    }
+                }
+                else
+                {
+                    int tickSecond;
+                    if (range >= ONE_DAY * MIN_TIME_SPLIT_NUMBER)
+                    {
+                        tickSecond = ONE_DAY;
+                    }
+                    else if (range >= ONE_HOUR * MIN_TIME_SPLIT_NUMBER)
+                    {
+                        tickSecond = ONE_HOUR;
+                    }
+                    else if (range >= ONE_MINUTE * MIN_TIME_SPLIT_NUMBER)
+                    {
+                        tickSecond = ONE_MINUTE;
+                    }
+                    else
+                    {
+                        tickSecond = ONE_SECOND;
+                    }
+                    tick = GetTickSecond(range, splitNumber, tickSecond);
+                    var let = minTimestamp % tickSecond;
+                    var defaultTimestamp = let == 0 ? minTimestamp : minTimestamp - let + tickSecond;
+                    var startTimestamp = (int)GetFirstMaxValue(list, minTimestamp, defaultTimestamp);
+                    while (startTimestamp > minTimestamp)
+                    {
+                        startTimestamp -= tick;
+                    }
+                    if (startTimestamp < minTimestamp)
+                    {
+                        startTimestamp += tick;
+                    }
+                    list.Clear();
+                    AddTickTimestamp(list, startTimestamp, maxTimestamp, tick);
+                }
             }
             return tick;
         }
 
-        private static int GetSplitNumber(int range, int tickSecond)
+        private static double GetFirstMaxValue(List<double> list, double minTimestamp, double defaultTimestamp = 0)
+        {
+            for (int i = 0; i < list.Count; i++)
+            {
+                if (list[i] >= minTimestamp)
+                {
+                    return list[i];
+                }
+            }
+            return defaultTimestamp == 0 ? minTimestamp : defaultTimestamp;
+        }
+
+        private static int GetSplitNumber(double range, int tickSecond)
         {
             var num = 1;
             while (range / (num * tickSecond) > 8)
@@ -223,12 +277,12 @@ namespace XCharts.Runtime
             return num;
         }
 
-        private static int GetTickSecond(int range, int splitNumber, int tickSecond)
+        private static int GetTickSecond(double range, int splitNumber, int tickSecond)
         {
             var num = 0;
             if (splitNumber > 0)
             {
-                num = Math.Max(range / (splitNumber * tickSecond), 1);
+                num = (int)Math.Max(range / (splitNumber * tickSecond), 1);
             }
             else
             {
@@ -243,7 +297,7 @@ namespace XCharts.Runtime
             return num * tickSecond;
         }
 
-        private static void AddTickTimestamp(List<double> list, int startTimestamp, int maxTimestamp, int tickSecond)
+        private static void AddTickTimestamp(List<double> list, double startTimestamp, double maxTimestamp, int tickSecond)
         {
             while (startTimestamp <= maxTimestamp)
             {

Runtime/XUGL/UGL.cs

@@ -1446,7 +1446,7 @@ namespace XUGL
             var lastP4 = center;
             var lastColor = color;
             var needBorder = borderWidth != 0;
-            var needSpace = gap != 0;
+            var needSpace = gap != 0 || borderWidth != 0;
             var borderLineWidth = needSpace ? borderWidth : borderWidth / 2;
             var lastPos = Vector3.zero;
             var middleDire = UGLHelper.GetDire(startAngle + halfAngle);

package.json

@@ -3,9 +3,9 @@
   "displayName": "XCharts",
   "author": "monitor1394",
   "license": "MIT",
-  "version": "3.14.0",
+  "version": "3.15.0",
-  "date": "20250315",
+  "date": "20260301",
-  "checkdate": "20250315",
+  "checkdate": "20260301",
   "unity": "2018.3",
   "description": "A charting and data visualization library for Unity. Support line chart, bar chart, pie chart, radar chart, scatter chart, heatmap chart, ring chart, candlestick chart, polar chart and parallel coordinates.",
   "keywords": [