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115 lines
4.0 KiB
Swift
115 lines
4.0 KiB
Swift
//
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// Copyright (c) 2019 Open Whisper Systems. All rights reserved.
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//
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import Foundation
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@objc
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public class MediaDownloadView: UIView {
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// MARK: -
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private let attachmentId: String
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private let radius: CGFloat
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private let shapeLayer1 = CAShapeLayer()
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private let shapeLayer2 = CAShapeLayer()
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@objc
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public required init(attachmentId: String, radius: CGFloat) {
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self.attachmentId = attachmentId
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self.radius = radius
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super.init(frame: .zero)
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shapeLayer1.zPosition = 1
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shapeLayer2.zPosition = 2
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layer.addSublayer(shapeLayer1)
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layer.addSublayer(shapeLayer2)
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NotificationCenter.default.addObserver(forName: NSNotification.Name.attachmentDownloadProgress, object: nil, queue: nil) { [weak self] notification in
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guard let strongSelf = self else { return }
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guard let notificationAttachmentId = notification.userInfo?[kAttachmentDownloadAttachmentIDKey] as? String else {
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return
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}
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guard notificationAttachmentId == strongSelf.attachmentId else {
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return
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}
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strongSelf.updateLayers()
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}
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}
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@available(*, unavailable, message: "use other init() instead.")
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required public init?(coder aDecoder: NSCoder) {
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notImplemented()
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}
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deinit {
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NotificationCenter.default.removeObserver(self)
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}
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@objc public override var bounds: CGRect {
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didSet {
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if oldValue != bounds {
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updateLayers()
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}
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}
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}
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@objc public override var frame: CGRect {
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didSet {
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if oldValue != frame {
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updateLayers()
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}
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}
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}
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internal func updateLayers() {
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AssertIsOnMainThread()
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shapeLayer1.frame = self.bounds
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shapeLayer2.frame = self.bounds
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shapeLayer1.path = nil
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shapeLayer2.path = nil
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return
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// We can't display download progress yet
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/*
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// Prevent the shape layer from animating changes.
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CATransaction.begin()
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CATransaction.setDisableActions(true)
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let center = CGPoint(x: self.bounds.width * 0.5,
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y: self.bounds.height * 0.5)
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let outerRadius: CGFloat = radius * 1.0
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let innerRadius: CGFloat = radius * 0.9
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let startAngle: CGFloat = CGFloat.pi * 1.5
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let endAngle: CGFloat = CGFloat.pi * (1.5 + 2 * CGFloat(progress.floatValue))
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let bezierPath1 = UIBezierPath()
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bezierPath1.append(UIBezierPath(ovalIn: CGRect(origin: center.minus(CGPoint(x: innerRadius,
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y: innerRadius)),
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size: CGSize(width: innerRadius * 2,
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height: innerRadius * 2))))
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bezierPath1.append(UIBezierPath(ovalIn: CGRect(origin: center.minus(CGPoint(x: outerRadius,
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y: outerRadius)),
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size: CGSize(width: outerRadius * 2,
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height: outerRadius * 2))))
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shapeLayer1.path = bezierPath1.cgPath
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let fillColor1: UIColor = UIColor(white: 1.0, alpha: 0.4)
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shapeLayer1.fillColor = fillColor1.cgColor
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shapeLayer1.fillRule = .evenOdd
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let bezierPath2 = UIBezierPath()
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bezierPath2.addArc(withCenter: center, radius: outerRadius, startAngle: startAngle, endAngle: endAngle, clockwise: true)
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bezierPath2.addArc(withCenter: center, radius: innerRadius, startAngle: endAngle, endAngle: startAngle, clockwise: false)
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shapeLayer2.path = bezierPath2.cgPath
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let fillColor2: UIColor = (Theme.isDarkThemeEnabled ? .ows_gray25 : .ows_white)
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shapeLayer2.fillColor = fillColor2.cgColor
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CATransaction.commit()
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*/
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}
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}
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