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Sample for view decoration
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import UIKit | |
import PlaygroundSupport | |
precedencegroup ForwarderApplication { | |
associativity: left | |
} | |
infix operator |> : ForwarderApplication | |
func |> <A, B>(x: A, f: (A) -> B) -> B { | |
return f(x) | |
} | |
precedencegroup ForwarderComposition { | |
associativity: left | |
higherThan: SingleTypeComposition | |
} | |
infix operator >>>: ForwarderComposition | |
func >>> <A, B, C>(f: @escaping (A) -> B, g: @escaping (B) -> C) -> (A) -> C { | |
return { g(f($0)) } | |
} | |
precedencegroup SingleTypeComposition { | |
associativity: right | |
higherThan: ForwarderApplication | |
} | |
infix operator <>: SingleTypeComposition | |
func <> <A>(f: @escaping (A) -> A, g: @escaping (A) -> A) -> (A) -> A { | |
return f >>> g | |
} | |
func <> <A>(f: @escaping (inout A) -> Void, g: @escaping (inout A) -> Void) -> (inout A) -> Void { | |
return { a in | |
f(&a) | |
g(&a) | |
} | |
} | |
func <> <A: AnyObject>(f: @escaping (A) -> Void, g: @escaping (A) -> Void) -> (A) -> Void { | |
return { a in | |
f(a) | |
g(a) | |
} | |
} | |
let cornerRadious: (CGFloat) -> (UIView) -> Void = { radius in | |
return { $0.layer.cornerRadius = radius } | |
} | |
let shadowRadius: (CGFloat) -> (UIView) -> Void = { radius in | |
return { | |
$0.layer.shadowRadius = radius | |
$0.layer.shadowOpacity = 0.3 | |
$0.layer.shadowColor = UIColor.black.cgColor | |
$0.layer.shadowOffset = CGSize(width: 0, height: radius / 2) | |
$0.layer.masksToBounds = false | |
} | |
} | |
let backgroundColor: (UIColor) -> (UIView) -> Void = { color in | |
return { $0.backgroundColor = color } | |
} | |
let buttonTitle: (String) -> (UIButton) -> Void = { title in | |
return { $0.setTitle(title, for: .normal) } | |
} | |
let buttonTitleColor: (UIColor) -> (UIButton) -> Void = { color in | |
return { $0.setTitleColor(color, for: .normal) } | |
} | |
func borderStyle(color: UIColor, width: CGFloat) -> (UIView) -> Void { | |
return { | |
$0.layer.borderColor = color.cgColor | |
$0.layer.borderWidth = width | |
} | |
} | |
let baseButtonStyle: (UIButton) -> Void = { | |
$0.contentEdgeInsets = UIEdgeInsets( | |
top: 12, left: 16, bottom: 12, right: 16) | |
$0.titleLabel?.font = .systemFont(ofSize: 16, weight: .medium) | |
} <> backgroundColor(.blue) | |
let baseViewStyle: (UIView) -> Void = { | |
$0.backgroundColor = .white | |
} | |
let baseTextFieldStyle: (UITextField) -> Void = | |
cornerRadious(10) | |
<> borderStyle(color: .yellow, width: 3) | |
<> { (textField: UITextField) in | |
textField.borderStyle = .roundedRect | |
textField.heightAnchor.constraint(equalToConstant: 60).isActive = true | |
} | |
let textButtonStyle = | |
baseButtonStyle | |
<> buttonTitleColor(.white) | |
let okButtonStyle = | |
textButtonStyle | |
<> cornerRadious(6) | |
<> buttonTitle("OK") | |
let redCardViewStyle = | |
baseViewStyle | |
<> backgroundColor(.red) | |
<> cornerRadious(2) | |
<> shadowRadius(4) | |
let phoneNumberTextFieldStyle = | |
baseTextFieldStyle | |
<> { | |
$0.keyboardType = .numberPad | |
$0.placeholder = "電話番号を入力してください" | |
} | |
class ViewController: UIViewController { | |
override func viewDidLoad() { | |
super.viewDidLoad() | |
self.view.frame = CGRect(x: 0, y: 0, width: 320, height: 480) | |
self.view.backgroundColor = .white | |
let card = UIView(frame: CGRect(x: 100, y: 100, width: 200, height: 80)) | |
redCardViewStyle(card) | |
self.view.addSubview(card) | |
let ok = UIButton(frame: CGRect(x: 100, y: 200, width: 100, height: 50)) | |
okButtonStyle(ok) | |
self.view.addSubview(ok) | |
let input = UITextField(frame: CGRect(x: 50, y: 300, width: 300, height: 50)) | |
phoneNumberTextFieldStyle(input) | |
self.view.addSubview(input) | |
} | |
} | |
let viewController = ViewController() | |
PlaygroundPage.current.liveView = viewController |
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