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Support for rounded edges for pie chart slices #5114

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Support for rounded edges for pie chart slices #5114

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12 changes: 12 additions & 0 deletions Source/Charts/Data/Implementations/Standard/PieChartDataSet.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -106,6 +106,18 @@ open class PieChartDataSet: ChartDataSet, PieChartDataSetProtocol
/// the color for the highlighted sector
open var highlightColor: NSUIColor? = nil

/// the width for slice stroke
open var sliceStrokeWidth: CGFloat = 0.0

/// the color for the slice stroke pattern
open var sliceLineDashPattern: [NSNumber] = [0, 0]

/// the color to fill slice
open var sliceFillColor: CGColor = UIColor.clear.cgColor

/// the line join style for the slice
open var sliceStrokeLineJoinStyle: CAShapeLayerLineJoin = .miter

// MARK: - NSCopying

open override func copy(with zone: NSZone? = nil) -> Any
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12 changes: 12 additions & 0 deletions Source/Charts/Data/Interfaces/PieChartDataSetProtocol.swift
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Expand Up @@ -60,5 +60,17 @@ public protocol PieChartDataSetProtocol: ChartDataSetProtocol

/// get/sets the color for the highlighted sector
var highlightColor: NSUIColor? { get set }

/// the width for slice stroke
var sliceStrokeWidth: CGFloat { get set }

/// the color for the slice stroke pattern
var sliceLineDashPattern: [NSNumber] { get set }

/// the color to fill slice
var sliceFillColor: CGColor { get set }

/// the line join style for the slice
var sliceStrokeLineJoinStyle: CAShapeLayerLineJoin { get set }

}
10 changes: 10 additions & 0 deletions Source/Charts/Renderers/PieChartRenderer.swift
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Expand Up @@ -278,6 +278,16 @@ open class PieChartRenderer: NSObject, DataRenderer
context.addPath(path)
context.fillPath(using: .evenOdd)

// to customize stroke edges for the slices
let layer = CAShapeLayer()
layer.lineWidth = dataSet.sliceStrokeWidth
layer.lineJoin = dataSet.sliceStrokeLineJoinStyle
layer.lineDashPattern = dataSet.sliceLineDashPattern
layer.fillColor = dataSet.sliceFillColor
layer.strokeColor = dataSet.color(atIndex: j).cgColor
layer.path = path
layer.render(in: context)

let axElement = createAccessibleElement(withIndex: j,
container: chart,
dataSet: dataSet)
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