Charts/ChartsDemo-iOS/Swift/Demos/BubbleChartViewController.swift

//
//  BubbleChartViewController.swift
//  ChartsDemo-iOS
//
//  Created by Jacob Christie on 2017-07-09.
//  Copyright © 2017 jc. All rights reserved.
//

#if canImport(UIKit)
    import UIKit
#endif
import DGCharts

class BubbleChartViewController: DemoBaseViewController {
    
    @IBOutlet var chartView: BubbleChartView!
    @IBOutlet var sliderX: UISlider!
    @IBOutlet var sliderY: UISlider!
    @IBOutlet var sliderTextX: UITextField!
    @IBOutlet var sliderTextY: UITextField!
    
    override func viewDidLoad() {
        super.viewDidLoad()

        // Do any additional setup after loading the view.
        self.title = "Bubble Chart"
        self.options = [.toggleValues,
                        .toggleIcons,
                        .toggleHighlight,
                        .animateX,
                        .animateY,
                        .animateXY,
                        .saveToGallery,
                        .togglePinchZoom,
                        .toggleAutoScaleMinMax,
                        .toggleData]
        
        chartView.delegate = self
        
        chartView.chartDescription.enabled = false
        
        chartView.dragEnabled = false
        chartView.setScaleEnabled(true)
        chartView.maxVisibleCount = 200
        chartView.pinchZoomEnabled = true
        
        chartView.legend.horizontalAlignment = .right
        chartView.legend.verticalAlignment = .top
        chartView.legend.orientation = .vertical
        chartView.legend.drawInside = false
        chartView.legend.font = UIFont(name: "HelveticaNeue-Light", size: 10)!
        
        chartView.leftAxis.labelFont = UIFont(name: "HelveticaNeue-Light", size: 10)!
        chartView.leftAxis.spaceTop = 0.3
        chartView.leftAxis.spaceBottom = 0.3
        chartView.leftAxis.axisMinimum = 0
        
        chartView.rightAxis.enabled = false
        
        chartView.xAxis.labelPosition = .bottom
        chartView.xAxis.labelFont = UIFont(name: "HelveticaNeue-Light", size: 10)!
        
        sliderX.value = 10
        sliderY.value = 50
        slidersValueChanged(nil)
    }
    
    override func updateChartData() {
        if self.shouldHideData {
            chartView.data = nil
            return
        }
        
        self.setDataCount(Int(sliderX.value), range: UInt32(sliderY.value))
    }
    
    func setDataCount(_ count: Int, range: UInt32) {
        let yVals1 = (0..<count).map { (i) -> BubbleChartDataEntry in
            let val = Double(arc4random_uniform(range))
            let size = CGFloat(arc4random_uniform(range))
            return BubbleChartDataEntry(x: Double(i), y: val, size: size, icon: UIImage(named: "icon"))
        }
        let yVals2 = (0..<count).map { (i) -> BubbleChartDataEntry in
            let val = Double(arc4random_uniform(range))
            let size = CGFloat(arc4random_uniform(range))
            return BubbleChartDataEntry(x: Double(i), y: val, size: size, icon: UIImage(named: "icon"))
        }
        let yVals3 = (0..<count).map { (i) -> BubbleChartDataEntry in
            let val = Double(arc4random_uniform(range))
            let size = CGFloat(arc4random_uniform(range))
            return BubbleChartDataEntry(x: Double(i), y: val, size: size)
        }
        
        let set1 = BubbleChartDataSet(entries: yVals1, label: "DS 1")
        set1.drawIconsEnabled = false
        set1.setColor(ChartColorTemplates.colorful()[0], alpha: 0.5)
        set1.drawValuesEnabled = true
        
        let set2 = BubbleChartDataSet(entries: yVals2, label: "DS 2")
        set2.drawIconsEnabled = false
        set2.iconsOffset = CGPoint(x: 0, y: 15)
        set2.setColor(ChartColorTemplates.colorful()[1], alpha: 0.5)
        set2.drawValuesEnabled = true
        
        let set3 = BubbleChartDataSet(entries: yVals3, label: "DS 3")
        set3.setColor(ChartColorTemplates.colorful()[2], alpha: 0.5)
        set3.drawValuesEnabled = true
        
        let data = [set1, set2, set3] as BubbleChartData
        data.setDrawValues(false)
        data.setValueFont(UIFont(name: "HelveticaNeue-Light", size: 7)!)
        data.setHighlightCircleWidth(1.5)
        data.setValueTextColor(.white)
        
        chartView.data = data
    }
    
    override func optionTapped(_ option: Option) {
        super.handleOption(option, forChartView: chartView)
    }
    
    // MARK: - Actions
    @IBAction func slidersValueChanged(_ sender: Any?) {
        sliderTextX.text = "\(Int(sliderX.value))"
        sliderTextY.text = "\(Int(sliderY.value))"
        
        self.updateChartData()
    }
}