Swift iOS Demos

ChartsDemo/Resources/Images.xcassets/AppIcon.appiconset/Contents.json

@@ -57,4 +57,4 @@
     "version" : 1,
     "author" : "xcode"
   }
-}
+}

ChartsDemo/Swift/AppDelegate.swift

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+//
+//  AppDelegate.swift
+//  ChartsDemo-iOS
+//
+//  Created by Jacob Christie on 2017-07-03.
+//  Copyright © 2017 jc. All rights reserved.
+//
+
+import UIKit
+
+@UIApplicationMain
+class AppDelegate: UIResponder, UIApplicationDelegate {
+
+    var window: UIWindow?
+
+    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
+        // Override point for customization after application launch.
+        self.window = UIWindow(frame: UIScreen.main.bounds)
+
+
+        let vc = DemoListViewController()
+        let nav = UINavigationController(rootViewController: vc)
+
+        window?.rootViewController = nav
+        window?.makeKeyAndVisible()
+
+        return true
+    }
+
+    func applicationWillResignActive(_ application: UIApplication) {
+        // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
+        // Use this method to pause ongoing tasks, disable timers, and invalidate graphics rendering callbacks. Games should use this method to pause the game.
+    }
+
+    func applicationDidEnterBackground(_ application: UIApplication) {
+        // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
+        // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
+    }
+
+    func applicationWillEnterForeground(_ application: UIApplication) {
+        // Called as part of the transition from the background to the active state; here you can undo many of the changes made on entering the background.
+    }
+
+    func applicationDidBecomeActive(_ application: UIApplication) {
+        // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
+    }
+
+    func applicationWillTerminate(_ application: UIApplication) {
+        // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
+    }
+
+
+}
+

ChartsDemo/Swift/Components/BalloonMarker.swift

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+//
+//  BalloonMarker.swift
+//  ChartsDemo-iOS
+//
+//  Created by Jacob Christie on 2017-07-09.
+//  Copyright © 2017 jc. All rights reserved.
+//
+
+import Foundation
+import Charts
+
+public class BalloonMarker: MarkerImage {
+    public var color: UIColor
+    public var arrowSize = CGSize(width: 15, height: 11)
+    public var font: UIFont
+    public var textColor: UIColor
+    public var insets: UIEdgeInsets
+    public var minimumSize = CGSize()
+
+    fileprivate var label: String?
+    fileprivate var _labelSize: CGSize = CGSize()
+    fileprivate var _paragraphStyle: NSMutableParagraphStyle?
+    fileprivate var _drawAttributes = [NSAttributedStringKey : AnyObject]()
+
+    public init(color: UIColor, font: UIFont, textColor: UIColor, insets: UIEdgeInsets) {
+        self.color = color
+        self.font = font
+        self.textColor = textColor
+        self.insets = insets
+
+        _paragraphStyle = NSParagraphStyle.default.mutableCopy() as? NSMutableParagraphStyle
+        _paragraphStyle?.alignment = .center
+        super.init()
+    }
+
+    public override func offsetForDrawing(atPoint point: CGPoint) -> CGPoint {
+        let size = self.size
+        var point = point
+        point.x -= size.width / 2.0
+        point.y -= size.height
+        return super.offsetForDrawing(atPoint: point)
+    }
+
+    public override func draw(context: CGContext, point: CGPoint) {
+        guard let label = label else { return }
+
+        let offset = self.offsetForDrawing(atPoint: point)
+        let size = self.size
+
+        var rect = CGRect(
+            origin: CGPoint(
+                x: point.x + offset.x,
+                y: point.y + offset.y),
+            size: size)
+        rect.origin.x -= size.width / 2.0
+        rect.origin.y -= size.height
+
+        context.saveGState()
+
+        context.setFillColor(color.cgColor)
+        context.beginPath()
+        context.move(to: CGPoint(
+            x: rect.origin.x,
+            y: rect.origin.y))
+        context.addLine(to: CGPoint(
+            x: rect.origin.x + rect.size.width,
+            y: rect.origin.y))
+        context.addLine(to: CGPoint(
+            x: rect.origin.x + rect.size.width,
+            y: rect.origin.y + rect.size.height - arrowSize.height))
+        context.addLine(to: CGPoint(
+            x: rect.origin.x + (rect.size.width + arrowSize.width) / 2.0,
+            y: rect.origin.y + rect.size.height - arrowSize.height))
+        context.addLine(to: CGPoint(
+            x: rect.origin.x + rect.size.width / 2.0,
+            y: rect.origin.y + rect.size.height))
+        context.addLine(to: CGPoint(
+            x: rect.origin.x + (rect.size.width - arrowSize.width) / 2.0,
+            y: rect.origin.y + rect.size.height - arrowSize.height))
+        context.addLine(to: CGPoint(
+            x: rect.origin.x,
+            y: rect.origin.y + rect.size.height - arrowSize.height))
+        context.addLine(to: CGPoint(
+            x: rect.origin.x,
+            y: rect.origin.y))
+        context.fillPath()
+
+        rect.origin.y += self.insets.top
+        rect.size.height -= self.insets.top + self.insets.bottom
+
+        UIGraphicsPushContext(context)
+
+        label.draw(in: rect, withAttributes: _drawAttributes)
+
+        UIGraphicsPopContext()
+
+        context.restoreGState()
+    }
+
+    public override func refreshContent(entry: ChartDataEntry, highlight: Highlight) {
+        setLabel(String(entry.y))
+    }
+
+    public func setLabel(_ newLabel: String) {
+        label = newLabel
+
+        _drawAttributes.removeAll()
+        _drawAttributes[.font] = self.font
+        _drawAttributes[.paragraphStyle] = _paragraphStyle
+        _drawAttributes[.foregroundColor] = self.textColor
+
+        _labelSize = label?.size(withAttributes: _drawAttributes) ?? CGSize.zero
+
+        var size = CGSize()
+        size.width = _labelSize.width + self.insets.left + self.insets.right
+        size.height = _labelSize.height + self.insets.top + self.insets.bottom
+        size.width = max(minimumSize.width, size.width)
+        size.height = max(minimumSize.height, size.height)
+        self.size = size
+    }
+
+}

ChartsDemo/Swift/Components/RadarMarkerView.swift

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+//
+//  RadarMarkerView.swift
+//  ChartsDemo
+//
+//  Copyright 2015 Daniel Cohen Gindi & Philipp Jahoda
+//  A port of MPAndroidChart for iOS
+//  Licensed under Apache License 2.0
+//
+//  https://github.com/danielgindi/Charts
+//
+
+import Foundation
+import Charts
+
+public class RadarMarkerView: MarkerView {
+    @IBOutlet var label: UILabel!
+
+    public override func awakeFromNib() {
+        self.offset.x = -self.frame.size.width / 2.0
+        self.offset.y = -self.frame.size.height - 7.0
+    }
+
+    public override func refreshContent(entry: ChartDataEntry, highlight: Highlight) {
+        label.text = String.init(format: "%d %%", Int(round(entry.y)))
+        layoutIfNeeded()
+    }
+}

ChartsDemo/Swift/Components/XYMarkerView.swift

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+//
+//  XYMarkerView.swift
+//  ChartsDemo-iOS
+//
+//  Created by Jacob Christie on 2017-07-09.
+//  Copyright © 2017 jc. All rights reserved.
+//
+
+import Foundation
+import Charts
+
+public class XYMarkerView: BalloonMarker {
+    public var xAxisValueFormatter: IAxisValueFormatter
+    fileprivate var yFormatter = NumberFormatter()
+
+    public init(color: UIColor, font: UIFont, textColor: UIColor, insets: UIEdgeInsets,
+                xAxisValueFormatter: IAxisValueFormatter) {
+        self.xAxisValueFormatter = xAxisValueFormatter
+        yFormatter.minimumFractionDigits = 1
+        yFormatter.maximumFractionDigits = 1
+        super.init(color: color, font: font, textColor: textColor, insets: insets)
+    }
+
+    public override func refreshContent(entry: ChartDataEntry, highlight: Highlight) {
+        let string = "x: "
+            + xAxisValueFormatter.stringForValue(entry.x, axis: XAxis())
+            + ", y: "
+            + yFormatter.string(from: NSNumber(floatLiteral: entry.y))!
+        setLabel(string)
+    }
+
+}