Abhishek
4 years ago
16 changed files with 191 additions and 0 deletions
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// Copyright © 2015 Abhishek Banthia |
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import Foundation |
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import AppKit |
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extension CGRect { |
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static func center(of layer: CALayer) -> CGPoint { |
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let parentSize = layer.frame.size |
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return CGPoint(x: parentSize.width / 2, y: parentSize.height / 2) |
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} |
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static func center(of parent: NSView) -> CGPoint { |
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let parentSize = parent.frame.size |
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return CGPoint(x: parentSize.width / 2, y: parentSize.height / 6) |
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} |
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} |
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extension String { |
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func size(with fontSize: CGFloat) -> CGSize { |
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let attr: [NSAttributedString.Key: Any] = [NSAttributedString.Key.font: NSFont.systemFont(ofSize: fontSize)] |
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let size = NSString(string: self).size(withAttributes: attr) |
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return size |
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} |
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} |
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fileprivate class HideAnimationDelegate: NSObject, CAAnimationDelegate { |
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private weak var view: NSView? |
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fileprivate init(view: NSView) { |
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self.view = view |
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} |
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fileprivate static func delegate(forView NSView: NSView) -> CAAnimationDelegate { |
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return HideAnimationDelegate(view: NSView) |
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} |
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fileprivate func animationDidStart(_ anim: CAAnimation) { |
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view?.layer?.opacity = 0.0 |
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} |
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func animationDidStop(_ anim: CAAnimation, finished flag: Bool) { |
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view?.removeFromSuperview() |
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view = nil |
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} |
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} |
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func hideAnimation(view: NSView, style: Style) { |
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let anim = CABasicAnimation(keyPath: "opacity") |
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let timing = CAMediaTimingFunction(name: CAMediaTimingFunctionName.linear) |
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anim.timingFunction = timing |
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let currentLayerTime = view.layer?.convertTime(CACurrentMediaTime(), from: nil) |
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anim.beginTime = currentLayerTime! + CFTimeInterval(style.fadeInOutDelay) |
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anim.duration = CFTimeInterval(style.fadeInOutDuration) |
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anim.fromValue = 1.0 |
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anim.toValue = 0.0 |
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anim.isRemovedOnCompletion = false |
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anim.delegate = HideAnimationDelegate.delegate(forView: view) |
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view.layer?.add(anim, forKey: "hide animation") |
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} |
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public protocol Style { |
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var fontSize: CGFloat {get} |
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var horizontalMargin: CGFloat {get} |
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var verticalMargin: CGFloat {get} |
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var cornerRadius: CGFloat {get} |
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var font: NSFont {get} |
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var backgroundColor: NSColor {get} |
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var foregroundColor: NSColor {get} |
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var fadeInOutDuration: CGFloat {get} |
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var fadeInOutDelay: CGFloat {get} |
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var labelOriginWithMargin: CGPoint {get} |
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var activitySize: CGSize {get} |
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} |
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extension Style { |
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public var labelOriginWithMargin: CGPoint { |
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return CGPoint(x: horizontalMargin, y: verticalMargin) |
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} |
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public var fontSize: CGFloat {return 12} |
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public var font: NSFont { |
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if let avenirFont = NSFont(name: "Avenir-Light", size: fontSize) { |
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return avenirFont |
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} |
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return NSFont.systemFont(ofSize: fontSize) |
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} |
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public var horizontalMargin: CGFloat {return 10} |
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public var verticalMargin: CGFloat {return 5} |
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public var cornerRadius: CGFloat {return 8} |
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public var backgroundColor: NSColor {return .black} |
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public var foregroundColor: NSColor {return .white} |
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public var activitySize: CGSize {return CGSize(width: 100, height: 100)} |
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public var fadeInOutDuration: CGFloat {return 1.0} |
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public var fadeInOutDelay: CGFloat {return 1.0} |
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} |
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public struct DefaultStyle: Style { |
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public static let shared = DefaultStyle() |
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} |
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private struct ToastKeys { |
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static var ActiveToast = "TSToastActiveToastKey" |
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} |
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class ToastView: NSView { |
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private let message: String |
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private let labelSize: CGSize |
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private let style: Style |
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init(message: String) { |
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self.message = message |
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self.style = DefaultStyle() |
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self.labelSize = message.size(with: style.fontSize) |
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let size = CGSize( |
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width: labelSize.width + style.horizontalMargin*2, |
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height: labelSize.height + style.verticalMargin*2 |
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) |
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let rect = CGRect(origin: .zero, size: size) |
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super.init(frame: rect) |
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wantsLayer = true |
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} |
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required init?(coder aDecoder: NSCoder) { fatalError() } |
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override func viewDidMoveToSuperview() { |
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super.viewDidMoveToSuperview() |
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if superview != nil { |
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configure() |
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} |
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} |
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private func configure() { |
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frame = superview?.bounds ?? NSRect.zero |
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let rect = CGRect(origin: style.labelOriginWithMargin, size: labelSize) |
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let sizeWithMargin = CGSize( |
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width: rect.width + style.horizontalMargin*2, |
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height: rect.height + style.verticalMargin*2 |
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) |
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let rectWithMargin = CGRect( |
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origin: .zero, // position is manipulated later anyways |
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size: sizeWithMargin |
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) |
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// outside Container |
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let container = CALayer() |
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container.frame = rectWithMargin |
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container.position = CGRect.center(of: superview!) |
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container.backgroundColor = style.backgroundColor.cgColor |
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container.cornerRadius = style.cornerRadius |
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layer?.addSublayer(container) |
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// inside TextLayer |
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let text = CATextLayer() |
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text.frame = rect |
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text.position = CGRect.center(of: container) |
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text.string = message |
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text.font = NSFont.systemFont(ofSize: style.fontSize) |
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text.fontSize = style.fontSize |
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text.alignmentMode = .center |
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text.foregroundColor = style.foregroundColor.cgColor |
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text.backgroundColor = style.backgroundColor.cgColor |
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text.contentsScale = layer?.contentsScale ?? 0 // For Retina Display |
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container.addSublayer(text) |
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} |
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} |
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extension NSView { |
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public func makeToast(_ message: String) { |
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let toast = ToastView(message: message) |
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self.addSubview(toast) |
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hideAnimation(view: toast, style: DefaultStyle.shared) |
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} |
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} |
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