Feat: Implememt TickMarkSlider #89

Custom UISlider

MartHoliday/MartHoliday/View/TickMarkSlider.swift

@@ -0,0 +1,65 @@
+//
+//  TickMarkSlider.swift
+//  MartHoliday
+//
+//  Created by YOUTH2 on 21/07/2019.
+//  Copyright © 2019 JINiOS. All rights reserved.
+//
+
+import UIKit
+
+class TickMarkSlider: UISlider {
+
+    var numberOfTickMarks: Float?
+    var unit: Float?
+
+    let hapticGenerator = UIImpactFeedbackGenerator(style: .light)
+
+    convenience init(tick: Float, maximumValue: Float, frame: CGRect) {
+        self.init(frame: frame)
+        self.numberOfTickMarks = tick
+        self.maximumValue = maximumValue
+        self.unit = (maximumValue - self.minimumValue) / tick
+    }
+
+    override init(frame: CGRect) {
+        super.init(frame: frame)
+    }
+
+    required init?(coder aDecoder: NSCoder) {
+        super.init(coder: aDecoder)
+    }
+
+    func addTickMarks() {
+        let width: CGFloat = 2.0
+        let height: CGFloat = 15.0
+        let yPosition: CGFloat = (self.frame.size.height - 13)/2
+        var xPosition: CGFloat = 0
+
+        guard let numberOfTickMarks = self.numberOfTickMarks else { return }
+        let ratio = Float(self.frame.width) / numberOfTickMarks
+
+        for i in 0..<Int(numberOfTickMarks) {
+            if i == 0 {
+                xPosition += width
+                continue
+            }
+            xPosition = CGFloat(Float(i) * ratio)
+
+            let tick = UIView(frame: CGRect(x: xPosition, y: yPosition, width: width, height: height))
+            tick.backgroundColor = .gray
+
+            self.insertSubview(tick, belowSubview: self)
+            xPosition += width
+        }
+    }
+
+    override func endTracking(_ touch: UITouch?, with event: UIEvent?) {
+        guard let unit = self.unit else { return }
+        let newStep = roundf(self.value / unit)
+        self.value = newStep * unit
+        hapticGenerator.impactOccurred()
+    }
+
+
+}