62 lines
1.4 KiB
Swift
62 lines
1.4 KiB
Swift
// swiftlint:disable all
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// swiftformat:disable all
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//
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// IconImageView.swift
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// https://github.com/home-assistant/Iconic
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//
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// Copyright © 2019 The Home Assistant Authors
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// Licensed under the Apache 2.0 license
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// For more information see https://github.com/home-assistant/Iconic
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//
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import UIKit
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#if os(iOS) || os(tvOS)
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/** An Image View subclass, capable of rendering icons. Only supported for iOS and tvOS. */
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public class IconImageView: UIImageView {
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// MARK: - Public Variables
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/** The icon drawable to be used as image. */
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public var iconDrawable: IconDrawable? {
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didSet {
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updateIconImage()
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}
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}
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// MARK: - Overrides
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public override var frame: CGRect {
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didSet {
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updateIconImage()
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}
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}
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public override func layoutSubviews() {
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super.layoutSubviews()
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updateIconImage()
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}
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// MARK: - Image Constructor
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/**
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Updates the icon image, only when the frame is not empty.
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*/
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fileprivate func updateIconImage() {
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// No need to update the icon with empty frame
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if frame.isEmpty {
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return
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}
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if let icon = iconDrawable {
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let image = icon.image(ofSize: frame.size, color: nil)
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self.image = image.withRenderingMode(.alwaysTemplate)
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} else {
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self.image = nil
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}
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}
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}
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#endif
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