123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127 |
- //
- // StackedBarChartViewController.swift
- // ChartsDemo-iOS
- //
- // Created by Jacob Christie on 2017-07-09.
- // Copyright © 2017 jc. All rights reserved.
- //
- #if canImport(UIKit)
- import UIKit
- #endif
- import Charts
- class StackedBarChartViewController: DemoBaseViewController {
- @IBOutlet var chartView: BarChartView!
- @IBOutlet var sliderX: UISlider!
- @IBOutlet var sliderY: UISlider!
- @IBOutlet var sliderTextX: UITextField!
- @IBOutlet var sliderTextY: UITextField!
- lazy var formatter: NumberFormatter = {
- let formatter = NumberFormatter()
- formatter.maximumFractionDigits = 1
- formatter.negativeSuffix = " $"
- formatter.positiveSuffix = " $"
-
- return formatter
- }()
-
- override func viewDidLoad() {
- super.viewDidLoad()
-
- // Do any additional setup after loading the view.
- self.title = "Stacked Bar Chart"
- self.options = [.toggleValues,
- .toggleIcons,
- .toggleHighlight,
- .animateX,
- .animateY,
- .animateXY,
- .saveToGallery,
- .togglePinchZoom,
- .toggleAutoScaleMinMax,
- .toggleData,
- .toggleBarBorders]
-
-
- chartView.delegate = self
-
- chartView.chartDescription.enabled = false
-
- chartView.maxVisibleCount = 40
- chartView.drawBarShadowEnabled = false
- chartView.drawValueAboveBarEnabled = false
- chartView.highlightFullBarEnabled = false
-
- let leftAxis = chartView.leftAxis
- leftAxis.valueFormatter = DefaultAxisValueFormatter(formatter: formatter)
- leftAxis.axisMinimum = 0
-
- chartView.rightAxis.enabled = false
-
- let xAxis = chartView.xAxis
- xAxis.labelPosition = .top
-
- let l = chartView.legend
- l.horizontalAlignment = .right
- l.verticalAlignment = .bottom
- l.orientation = .horizontal
- l.drawInside = false
- l.form = .square
- l.formToTextSpace = 4
- l.xEntrySpace = 6
- // chartView.legend = l
- sliderX.value = 12
- sliderY.value = 100
- slidersValueChanged(nil)
-
- self.updateChartData()
- }
-
- override func updateChartData() {
- if self.shouldHideData {
- chartView.data = nil
- return
- }
-
- self.setChartData(count: Int(sliderX.value + 1), range: UInt32(sliderY.value))
- }
-
- func setChartData(count: Int, range: UInt32) {
- let yVals = (0..<count).map { (i) -> BarChartDataEntry in
- let mult = range + 1
- let val1 = Double(arc4random_uniform(mult) + mult / 3)
- let val2 = Double(arc4random_uniform(mult) + mult / 3)
- let val3 = Double(arc4random_uniform(mult) + mult / 3)
-
- return BarChartDataEntry(x: Double(i), yValues: [val1, val2, val3], icon: #imageLiteral(resourceName: "icon"))
- }
-
- let set = BarChartDataSet(entries: yVals, label: "Statistics Vienna 2014")
- set.drawIconsEnabled = false
- set.colors = [ChartColorTemplates.material()[0], ChartColorTemplates.material()[1], ChartColorTemplates.material()[2]]
- set.stackLabels = ["Births", "Divorces", "Marriages"]
-
- let data = BarChartData(dataSet: set)
- data.setValueFont(.systemFont(ofSize: 7, weight: .light))
- data.setValueFormatter(DefaultValueFormatter(formatter: formatter))
- data.setValueTextColor(.white)
-
- chartView.fitBars = true
- chartView.data = data
- }
-
- override func optionTapped(_ option: Option) {
- super.handleOption(option, forChartView: chartView)
- }
-
- @IBAction func slidersValueChanged(_ sender: Any?) {
- sliderTextX.text = "\(Int(sliderX.value))"
- sliderTextY.text = "\(Int(sliderY.value))"
-
- updateChartData()
- }
- }
|