Merge pull request #2961 from pascalherrmann/master

added highlightColor parameter for pie charts
ChartsOrg · Nov 15, 2017 · b27e366 · b27e366
2 parents e8fa7ad + 57c2e11
commit b27e366
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Showing 3 changed files with 9 additions and 2 deletions.
diff --git a/Source/Charts/Data/Implementations/Standard/PieChartDataSet.swift b/Source/Charts/Data/Implementations/Standard/PieChartDataSet.swift
@@ -105,13 +105,17 @@ open class PieChartDataSet: ChartDataSet, IPieChartDataSet
     /// the color for the slice-text labels
     open var entryLabelColor: NSUIColor? = nil
 
+    /// the color for the highlighted sector
+    open var highlightColor: NSUIColor? = nil
+
     // MARK: - NSCopying
 
     open override func copyWithZone(_ zone: NSZone?) -> AnyObject
     {
         let copy = super.copyWithZone(zone) as! PieChartDataSet
         copy._sliceSpace = _sliceSpace
         copy.selectionShift = selectionShift
+        copy.highlightColor = highlightColor
         return copy
     }
 }
diff --git a/Source/Charts/Data/Interfaces/IPieChartDataSet.swift b/Source/Charts/Data/Interfaces/IPieChartDataSet.swift
@@ -58,4 +58,7 @@ public protocol IPieChartDataSet: IChartDataSet
 
     /// the color for the slice-text labels
     var entryLabelColor: NSUIColor? { get set }
+
+    /// get/sets the color for the highlighted sector
+    var highlightColor: NSUIColor? { get set }
 }
diff --git a/Source/Charts/Renderers/PieChartRenderer.swift b/Source/Charts/Renderers/PieChartRenderer.swift
@@ -733,8 +733,8 @@ open class PieChartRenderer: DataRenderer
 
             let accountForSliceSpacing = sliceSpace > 0.0 && sliceAngle <= 180.0
 
-            context.setFillColor(set.color(atIndex: index).cgColor)
-            
+            context.setFillColor(set.highlightColor?.cgColor ?? set.color(atIndex: index).cgColor)
+
             let sliceSpaceAngleOuter = visibleAngleCount == 1 ?
                 0.0 :
                 sliceSpace / (ChartUtils.Math.FDEG2RAD * radius)