61 lines
2.0 KiB
Swift
61 lines
2.0 KiB
Swift
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//
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// TitlebarView.swift
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// SBrowser
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//
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// Created by James Magahern on 7/29/20.
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//
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import UIKit
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class TitlebarView: UIView
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{
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public let titleLabelView = UILabel(frame: .zero)
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private let backgroundImageView = UIImageView(frame: .zero)
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convenience init() {
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self.init(frame: .zero)
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addSubview(backgroundImageView)
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addSubview(titleLabelView)
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titleLabelView.textColor = .white
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titleLabelView.layer.shadowColor = UIColor.black.cgColor
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titleLabelView.layer.shadowRadius = 0.0
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titleLabelView.layer.shadowOffset = CGSize(width: 0.0, height: 2.0)
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titleLabelView.font = UIFont.boldSystemFont(ofSize: 12.0)
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}
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private func backgroundImageForSize(_ size: CGSize) -> UIImage? {
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var image: UIImage? = nil
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UIGraphicsBeginImageContext(CGSize(width: size.width, height: 1.0))
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if let context = UIGraphicsGetCurrentContext() {
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let gradientColorsArray = [
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UIColor(red: 0.101, green: 0.176, blue: 0.415, alpha: 1.0).cgColor,
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UIColor(red: 0.153, green: 0.000, blue: 0.153, alpha: 1.0).cgColor
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]
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if let gradient = CGGradient(colorsSpace: nil, colors: gradientColorsArray as CFArray, locations: nil) {
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context.drawLinearGradient(gradient, start: .zero, end: CGPoint(x: size.width, y: 0.0), options: CGGradientDrawingOptions())
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}
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image = UIGraphicsGetImageFromCurrentImageContext()
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UIGraphicsEndImageContext();
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}
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return image
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}
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override func layoutSubviews() {
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super.layoutSubviews()
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backgroundImageView.frame = bounds
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titleLabelView.frame = bounds.avoiding(verticalInsets: safeAreaInsets).insetBy(dx: 8.0, dy: 0.0)
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if let image = backgroundImageView.image, image.size == bounds.size {
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// No op
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} else {
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backgroundImageView.image = backgroundImageForSize(bounds.size)
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}
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}
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}
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