112 lines
3.0 KiB
Swift
112 lines
3.0 KiB
Swift
//
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// ArticleExtractorButton.swift
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// NetNewsWire
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//
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// Created by Maurice Parker on 9/18/19.
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// Copyright © 2019 Ranchero Software. All rights reserved.
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//
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import Foundation
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class ArticleExtractorButton: NSButton {
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var isError = false {
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didSet {
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if isError != oldValue {
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needsDisplay = true
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}
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}
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}
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var isInProgress = false {
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didSet {
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if isInProgress != oldValue {
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needsDisplay = true
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}
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}
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}
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override init(frame frameRect: NSRect) {
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super.init(frame: frameRect)
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wantsLayer = true
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}
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required init?(coder: NSCoder) {
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super.init(coder: coder)
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wantsLayer = true
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}
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override func draw(_ dirtyRect: NSRect) {
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super.draw(dirtyRect)
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guard let hostedLayer = self.layer else {
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return
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}
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if let imageLayer = hostedLayer.sublayers?[0] {
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if needsToDraw(imageLayer.bounds) {
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imageLayer.removeFromSuperlayer()
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} else {
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return
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}
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}
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let opacity: Float = isEnabled ? 1.0 : 0.5
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switch true {
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case isError:
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addImageSublayer(to: hostedLayer, image: AppAssets.articleExtractorError, opacity: opacity)
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case isInProgress:
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addAnimatedSublayer(to: hostedLayer)
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default:
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if NSApplication.shared.isActive {
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addImageSublayer(to: hostedLayer, image: AppAssets.articleExtractor, opacity: opacity)
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} else {
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if NSApplication.shared.effectiveAppearance.isDarkMode {
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addImageSublayer(to: hostedLayer, image: AppAssets.articleExtractorInactiveDark, opacity: opacity)
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} else {
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addImageSublayer(to: hostedLayer, image: AppAssets.articleExtractorInactiveLight, opacity: opacity)
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}
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}
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}
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}
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private func makeLayerForImage(_ image: NSImage) -> CALayer {
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let imageLayer = CALayer()
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imageLayer.bounds = CGRect(x: 0, y: 0, width: image.size.width, height: image.size.height)
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imageLayer.position = CGPoint(x: bounds.midX, y: bounds.midY)
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return imageLayer
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}
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private func addImageSublayer(to hostedLayer: CALayer, image: NSImage, opacity: Float = 1.0) {
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let imageLayer = makeLayerForImage(image)
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imageLayer.contents = image
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imageLayer.opacity = opacity
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hostedLayer.addSublayer(imageLayer)
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}
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private func addAnimatedSublayer(to hostedLayer: CALayer) {
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let imageProgress1 = AppAssets.articleExtractorProgress1
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let imageProgress2 = AppAssets.articleExtractorProgress2
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let imageProgress3 = AppAssets.articleExtractorProgress3
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let imageProgress4 = AppAssets.articleExtractorProgress4
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let images = [imageProgress1, imageProgress2, imageProgress3, imageProgress4, imageProgress3, imageProgress2]
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let imageLayer = CALayer()
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imageLayer.bounds = CGRect(x: 0, y: 0, width: imageProgress1?.size.width ?? 0, height: imageProgress1?.size.height ?? 0)
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imageLayer.position = CGPoint(x: bounds.midX, y: bounds.midY)
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hostedLayer.addSublayer(imageLayer)
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let animation = CAKeyframeAnimation(keyPath: "contents")
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animation.calculationMode = CAAnimationCalculationMode.linear
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animation.keyTimes = [0, 0.2, 0.4, 0.6, 0.8, 1]
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animation.duration = 2
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animation.values = images as [Any]
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animation.repeatCount = HUGE
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imageLayer.add(animation, forKey: "contents")
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}
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}
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