100 lines
2.9 KiB
Swift
100 lines
2.9 KiB
Swift
//
|
|
// Copyright (c) 2018 Open Whisper Systems. All rights reserved.
|
|
//
|
|
|
|
import Foundation
|
|
|
|
@objc
|
|
public class MediaDownloadView: UIView {
|
|
|
|
// MARK: - Dependencies
|
|
|
|
private var attachmentDownloads: OWSAttachmentDownloads {
|
|
return SSKEnvironment.shared.attachmentDownloads
|
|
}
|
|
|
|
// MARK: -
|
|
|
|
private let attachmentId: String
|
|
private let radius: CGFloat
|
|
private let shapeLayer = CAShapeLayer()
|
|
|
|
@objc
|
|
public required init(attachmentId: String, radius: CGFloat) {
|
|
self.attachmentId = attachmentId
|
|
self.radius = radius
|
|
|
|
super.init(frame: .zero)
|
|
|
|
layer.addSublayer(shapeLayer)
|
|
|
|
NotificationCenter.default.addObserver(forName: NSNotification.Name.attachmentDownloadProgress, object: nil, queue: nil) { [weak self] notification in
|
|
guard let strongSelf = self else { return }
|
|
guard let notificationAttachmentId = notification.userInfo?[kAttachmentDownloadAttachmentIDKey] as? String else {
|
|
return
|
|
}
|
|
guard notificationAttachmentId == strongSelf.attachmentId else {
|
|
return
|
|
}
|
|
strongSelf.updateLayers()
|
|
}
|
|
}
|
|
|
|
@available(*, unavailable, message: "use other init() instead.")
|
|
required public init?(coder aDecoder: NSCoder) {
|
|
notImplemented()
|
|
}
|
|
|
|
deinit {
|
|
NotificationCenter.default.removeObserver(self)
|
|
}
|
|
|
|
@objc public override var bounds: CGRect {
|
|
didSet {
|
|
if oldValue != bounds {
|
|
updateLayers()
|
|
}
|
|
}
|
|
}
|
|
|
|
@objc public override var frame: CGRect {
|
|
didSet {
|
|
if oldValue != frame {
|
|
updateLayers()
|
|
}
|
|
}
|
|
}
|
|
|
|
internal func updateLayers() {
|
|
AssertIsOnMainThread()
|
|
|
|
shapeLayer.frame = self.bounds
|
|
|
|
guard let progress = attachmentDownloads.downloadProgress(forAttachmentId: attachmentId) else {
|
|
Logger.warn("No progress for attachment.")
|
|
shapeLayer.path = nil
|
|
return
|
|
}
|
|
|
|
// Prevent the shape layer from animating changes.
|
|
CATransaction.begin()
|
|
CATransaction.setDisableActions(true)
|
|
|
|
let center = CGPoint(x: self.bounds.width * 0.5,
|
|
y: self.bounds.height * 0.5)
|
|
let outerRadius: CGFloat = radius * 1.0
|
|
let innerRadius: CGFloat = radius * 0.9
|
|
let startAngle: CGFloat = CGFloat.pi * 1.5
|
|
let endAngle: CGFloat = CGFloat.pi * (1.5 + 2 * CGFloat(progress.floatValue))
|
|
|
|
let bezierPath = UIBezierPath()
|
|
bezierPath.addArc(withCenter: center, radius: outerRadius, startAngle: startAngle, endAngle: endAngle, clockwise: true)
|
|
bezierPath.addArc(withCenter: center, radius: innerRadius, startAngle: endAngle, endAngle: startAngle, clockwise: false)
|
|
|
|
shapeLayer.path = bezierPath.cgPath
|
|
shapeLayer.fillColor = UIColor.ows_gray60.cgColor
|
|
|
|
CATransaction.commit()
|
|
}
|
|
}
|