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AnimatedButton.swift
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AnimatedButton.swift
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//
// AnimatedButton.swift
// lottie-swift
//
// Created by Brandon Withrow on 2/4/19.
//
import Foundation
import UIKit
/**
An interactive button that plays an animation when pressed.
*/
final public class AnimatedButton: AnimatedControl {
/// Sets the play range for the given UIControlEvent.
public func setPlayRange(fromProgress: AnimationProgressTime, toProgress: AnimationProgressTime, event: UIControl.Event) {
rangesForEvents[event.rawValue] = (from: fromProgress, to: toProgress)
}
/// Sets the play range for the given UIControlEvent.
public func setPlayRange(fromMarker fromName: String, toMarker toName: String, event: UIControl.Event) {
if let start = animationView.progressTime(forMarker: fromName),
let end = animationView.progressTime(forMarker: toName) {
rangesForEvents[event.rawValue] = (from: start, to: end)
}
}
public override init(animation: Animation) {
super.init(animation: animation)
self.accessibilityTraits = UIAccessibilityTraits.button
}
public override init() {
super.init()
self.accessibilityTraits = UIAccessibilityTraits.button
}
fileprivate var rangesForEvents: [UInt : (from: CGFloat, to: CGFloat)] = [UIControl.Event.touchUpInside.rawValue : (from: 0, to: 1)]
required public init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
public override func beginTracking(_ touch: UITouch, with event: UIEvent?) -> Bool {
let _ = super.beginTracking(touch, with: event)
let touchEvent = UIControl.Event.touchDown
if let playrange = rangesForEvents[touchEvent.rawValue] {
animationView.play(fromProgress: playrange.from, toProgress: playrange.to, loopMode: LottieLoopMode.playOnce)
}
sendActions(for: touchEvent)
return true
}
public override func endTracking(_ touch: UITouch?, with event: UIEvent?) {
super.endTracking(touch, with: event)
let touchEvent: UIControl.Event
if let touch = touch, bounds.contains(touch.location(in: self)) {
touchEvent = UIControl.Event.touchUpInside
} else {
touchEvent = UIControl.Event.touchUpOutside
}
if let playrange = rangesForEvents[touchEvent.rawValue] {
animationView.play(fromProgress: playrange.from, toProgress: playrange.to, loopMode: LottieLoopMode.playOnce)
}
sendActions(for: touchEvent)
}
}