NetNewsWire/Mac/MainWindow/ArticleExtractorButton.swift

112 lines
3.0 KiB
Swift

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