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ftp27/playground.swift

Created June 27, 2019 15:03
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  1. ftp27 created this gist Jun 27, 2019.
    105 changes: 105 additions & 0 deletions playground.swift
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,105 @@
    import PlaygroundSupport
    import UIKit

    func makeLabels(left: String, right: String) -> (UIView, UILabel, UILabel) {
    let leftLb: UILabel = {
    let label = UILabel(frame: .zero)
    label.textAlignment = .left
    label.backgroundColor = .blue
    label.text = left
    return label
    }()

    let rightLb: UILabel = {
    let label = UILabel(frame: .zero)
    label.textAlignment = .right
    label.backgroundColor = .purple
    label.text = right
    return label
    }()

    let view = UIView(frame: .zero)

    for v: UILabel in [leftLb, rightLb] {
    v.translatesAutoresizingMaskIntoConstraints = false
    v.font = UIFont.systemFont(ofSize: 14, weight: UIFont.Weight.regular)
    v.numberOfLines = 0
    v.textColor = .white
    view.addSubview(v)
    }
    NSLayoutConstraint.activate([
    leftLb.leadingAnchor.constraint(equalTo: view.leadingAnchor),
    leftLb.topAnchor.constraint(equalTo: view.topAnchor),
    leftLb.bottomAnchor.constraint(equalTo: view.bottomAnchor),
    rightLb.leadingAnchor.constraint(equalTo: leftLb.trailingAnchor),
    rightLb.topAnchor.constraint(equalTo: view.topAnchor),
    rightLb.trailingAnchor.constraint(equalTo: view.trailingAnchor),
    rightLb.bottomAnchor.constraint(equalTo: view.bottomAnchor),
    ])
    return (view, leftLb, rightLb)
    }

    let frame = CGRect(x:0, y:0, width: 300, height: 250)
    let contentView = UIView(frame: frame)
    contentView.backgroundColor = .white
    let stack = UIStackView(frame: frame)

    stack.axis = .vertical
    stack.distribution = .fillEqually
    stack.alignment = .fill
    stack.spacing = 2
    stack.translatesAutoresizingMaskIntoConstraints = false

    contentView.addSubview(stack)

    NSLayoutConstraint.activate([
    stack.leadingAnchor.constraint(equalTo: contentView.leadingAnchor, constant: 5),
    stack.topAnchor.constraint(equalTo: contentView.topAnchor, constant: 5),
    stack.trailingAnchor.constraint(equalTo: contentView.trailingAnchor, constant: -5),
    stack.bottomAnchor.constraint(equalTo: contentView.bottomAnchor, constant: -5),
    ])

    stack.addArrangedSubview({
    let (view,left,right) = makeLabels(left: "Hugging High", right: "Hugging High")
    left.setContentHuggingPriority(.defaultHigh, for: .horizontal)
    right.setContentHuggingPriority(.defaultHigh, for: .horizontal)
    return view
    }())

    stack.addArrangedSubview({
    let (view,left,right) = makeLabels(left: "Hugging Low", right: "Hugging High")
    left.setContentHuggingPriority(.defaultLow, for: .horizontal)
    right.setContentHuggingPriority(.defaultHigh, for: .horizontal)
    return view
    }())

    stack.addArrangedSubview({
    let (view,left,right) = makeLabels(left: "Compression High", right: "Compression High")
    left.setContentCompressionResistancePriority(.defaultHigh, for: .horizontal)
    right.setContentCompressionResistancePriority(.defaultHigh, for: .horizontal)
    return view
    }())

    stack.addArrangedSubview({
    let (view,left,right) = makeLabels(left: "Compression High", right: "Compression Low")
    left.setContentCompressionResistancePriority(.defaultHigh, for: .horizontal)
    right.setContentCompressionResistancePriority(.defaultLow, for: .horizontal)
    return view
    }())
    stack.addArrangedSubview({
    let (view,left,right) = makeLabels(left: "Hugging Low\nCompression High", right: "Hugging High\nCompression Low")
    left.setContentHuggingPriority(.defaultLow, for: .horizontal)
    right.setContentHuggingPriority(.defaultHigh, for: .horizontal)
    left.setContentCompressionResistancePriority(.defaultHigh, for: .horizontal)
    right.setContentCompressionResistancePriority(.defaultLow, for: .horizontal)
    return view
    }())
    stack.addArrangedSubview({
    let (view,left,right) = makeLabels(left: "Hugging Low\nCompression Low", right: "Hugging High\nCompression Hight")
    left.setContentHuggingPriority(.defaultLow, for: .horizontal)
    right.setContentHuggingPriority(.defaultHigh, for: .horizontal)
    left.setContentCompressionResistancePriority(.defaultLow, for: .horizontal)
    right.setContentCompressionResistancePriority(.defaultHigh, for: .horizontal)
    return view
    }())
    PlaygroundPage.current.liveView = contentView