Forked from darrarski/CustomIntensityVisualEffectView.swift
Created
August 19, 2022 05:06
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UIVisualEffectView subclass that allows to customise effect intensity
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| import UIKit | |
| final class CustomIntensityVisualEffectView: UIVisualEffectView { | |
| /// Create visual effect view with given effect and its intensity | |
| /// | |
| /// - Parameters: | |
| /// - effect: visual effect, eg UIBlurEffect(style: .dark) | |
| /// - intensity: custom intensity from 0.0 (no effect) to 1.0 (full effect) using linear scale | |
| init(effect: UIVisualEffect, intensity: CGFloat) { | |
| theEffect = effect | |
| customIntensity = intensity | |
| super.init(effect: nil) | |
| } | |
| required init?(coder aDecoder: NSCoder) { nil } | |
| deinit { | |
| animator?.stopAnimation(true) | |
| } | |
| override func draw(_ rect: CGRect) { | |
| super.draw(rect) | |
| effect = nil | |
| animator?.stopAnimation(true) | |
| animator = UIViewPropertyAnimator(duration: 1, curve: .linear) { [unowned self] in | |
| self.effect = theEffect | |
| } | |
| animator?.fractionComplete = customIntensity | |
| } | |
| private let theEffect: UIVisualEffect | |
| private let customIntensity: CGFloat | |
| private var animator: UIViewPropertyAnimator? | |
| } |
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