58 lines
1.3 KiB
Swift
58 lines
1.3 KiB
Swift
import UIKit
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import SwiftCharts
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// source used : https://github.com/LoopKit/Loop
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/// a SwiftChart to be added
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public class BloodGlucoseChartView: UIView {
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// MARK: - public properties
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public var chartGenerator: ((CGRect) -> UIView?)? {
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didSet {
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chartView = nil
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setNeedsLayout()
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}
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}
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// MARK: - private properties
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private var chartView: UIView? {
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didSet {
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if let view = oldValue {
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view.removeFromSuperview()
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}
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if let view = chartView {
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self.addSubview(view)
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}
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}
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}
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// MARK: public functions
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public func reloadChart() {
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chartView = nil
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setNeedsLayout()
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}
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// MARK: overriden functions
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override public func layoutSubviews() {
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super.layoutSubviews()
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if chartView == nil || chartView!.frame != bounds {
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// 50 is the smallest height in which we should attempt to redraw a chart.
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// Smaller sizes might be requested mid-animation, so ignore them.
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if bounds.height > 50 {
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chartView = chartGenerator?(bounds)
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}
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} else if chartView!.superview == nil {
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addSubview(chartView!)
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}
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}
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}
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