120 lines
4.1 KiB
Swift
120 lines
4.1 KiB
Swift
//
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// Line.swift
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// VDS
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//
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// Created by Nadigadda, Sumanth on 24/03/23.
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//
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import Foundation
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import UIKit
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import VDSCoreTokens
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/// A line visually separates content sections or elements in lists, tables and layouts to indicate content hierarchy.
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@objc(VDSLine)
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open class Line: View {
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//--------------------------------------------------
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// MARK: - Initializers
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//--------------------------------------------------
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required public init() {
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super.init(frame: .zero)
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}
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public override init(frame: CGRect) {
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super.init(frame: .zero)
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}
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public required init?(coder: NSCoder) {
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super.init(coder: coder)
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}
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//--------------------------------------------------
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// MARK: - Enums
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//--------------------------------------------------
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/// Enum used to describe the style the line that will be displayed.
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public enum Style: String, CaseIterable {
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case primary, secondary
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}
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/// Enum used to describe the orientation that will be displayed.
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public enum Orientation: String, CaseIterable {
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case horizontal, vertical
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}
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//--------------------------------------------------
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// MARK: - Public Properties
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//--------------------------------------------------
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/// Style of the line that will be displayed.
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open var style: Style = .primary { didSet { setNeedsUpdate() } }
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/// Allows to render the line vertically.
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open var orientation: Orientation = .horizontal { didSet { setNeedsUpdate() } }
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/// The natural size for the receiving view, considering only properties of the view itself.
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open override var intrinsicContentSize: CGSize {
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if orientation == .vertical {
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return .init(width: lineWidth, height: bounds.height)
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} else {
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return .init(width: bounds.width, height: lineWidth)
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}
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}
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//--------------------------------------------------
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// MARK: - Configuration
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//--------------------------------------------------
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/// Width of the line.
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public let lineWidth: CGFloat = 1.0
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/// Line Color for current Style and Surface.
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open var lineColor: UIColor { lineViewColorConfiguration.getColor(self) }
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/// Color configuration use for text color. This is a configuration that will provide a color based
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/// of local properties such as style and surface.
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open var lineViewColorConfiguration: AnyColorable = {
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let config = KeyedColorConfiguration<Line, Style>(keyPath: \.style)
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config.setSurfaceColors(VDSColor.elementsPrimaryOnlight, VDSColor.elementsPrimaryOndark, forKey: .primary)
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config.setSurfaceColors(VDSColor.elementsLowcontrastOnlight, VDSColor.elementsLowcontrastOndark, forKey: .secondary)
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return config.eraseToAnyColorable()
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}()
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//--------------------------------------------------
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// MARK: - Overrides
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//--------------------------------------------------
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/// Called once when a view is initialized and is used to Setup additional UI or other constants and configurations.
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open override func setup() {
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super.setup()
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}
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/// Used to make changes to the View based off a change events or from local properties.
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open override func updateView() {
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super.updateView()
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setNeedsDisplay()
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}
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/// Resets to default settings.
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open override func reset() {
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super.reset()
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style = .primary
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orientation = .horizontal
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}
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open override func draw(_ rect: CGRect) {
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guard let context = UIGraphicsGetCurrentContext() else { return }
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context.setStrokeColor(lineColor.cgColor)
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context.setLineWidth(lineWidth)
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if orientation == .horizontal {
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context.move(to: CGPoint(x: 0, y: rect.height / 2))
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context.addLine(to: CGPoint(x: rect.width, y: rect.height / 2))
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} else {
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context.move(to: CGPoint(x: rect.width / 2, y: 0))
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context.addLine(to: CGPoint(x: rect.width / 2, y: rect.height))
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}
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context.strokePath()
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}
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}
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