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App/camera/ALCameraLib/ViewController/DatePickerDialog.swift
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version 1.1
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import Foundation
import UIKit
/**
DatePickerDialog().show("撮影日", datePickerMode: .date, callback: { date in
if let date = date {
}
})
*/
private extension Selector {
static let buttonTapped = #selector(DatePickerDialog.buttonTapped)
static let deviceOrientationDidChange = #selector(DatePickerDialog.deviceOrientationDidChange)
}
open class DatePickerDialog: UIView {
public typealias DatePickerCallback = (Date?) -> Void
// MARK: - Constants
private let kDatePickerDialogDefaultButtonHeight: CGFloat = 50
private let kDatePickerDialogDefaultButtonSpacerHeight: CGFloat = 1
private let kDatePickerDialogCornerRadius: CGFloat = 7
private let kDatePickerDialogDoneButtonTag: Int = 1
// MARK: - Views
private var dialogView: UIView!
private var titleLabel: UILabel!
open var datePicker: UIDatePicker!
private var cancelButton: UIButton!
private var doneButton: UIButton!
// MARK: - Variables
private var defaultDate: Date?
private var datePickerMode: UIDatePickerMode?
private var callback: DatePickerCallback?
var showCancelButton: Bool = false
// MARK: - Dialog initialization
public init(showCancelButton: Bool = true) {
super.init(frame: CGRect(x: 0, y: 0, width: UIScreen.main.bounds.size.width, height: UIScreen.main.bounds.size.height))
self.showCancelButton = showCancelButton
setupView()
}
required public init?(coder aDecoder: NSCoder) {
super.init(coder: aDecoder)
}
func setupView() {
self.dialogView = createContainerView()
self.dialogView!.layer.shouldRasterize = true
self.dialogView!.layer.rasterizationScale = UIScreen.main.scale
self.layer.shouldRasterize = true
self.layer.rasterizationScale = UIScreen.main.scale
self.dialogView!.layer.opacity = 0.5
self.dialogView!.layer.transform = CATransform3DMakeScale(1.3, 1.3, 1)
self.backgroundColor = UIColor(red: 0, green: 0, blue: 0, alpha: 0)
self.addSubview(self.dialogView!)
}
/// Handle device orientation changes
func deviceOrientationDidChange(_ notification: Notification) {
self.frame = CGRect(x: 0, y: 0, width: UIScreen.main.bounds.size.width, height: UIScreen.main.bounds.size.height)
let screenSize = countScreenSize()
let dialogSize = CGSize(width: 300, height: 230 + kDatePickerDialogDefaultButtonHeight + kDatePickerDialogDefaultButtonSpacerHeight)
dialogView.frame = CGRect(x: (screenSize.width - dialogSize.width) / 2, y: (screenSize.height - dialogSize.height) / 2, width: dialogSize.width, height: dialogSize.height)
}
/// Create the dialog view, and animate opening the dialog
open func show(_ title: String, doneButtonTitle: String = "Done", cancelButtonTitle: String = "Cancel", defaultDate: Date = Date(), minimumDate: Date? = nil, maximumDate: Date? = nil, datePickerMode: UIDatePickerMode = .dateAndTime, callback: @escaping DatePickerCallback) {
self.titleLabel.text = title
self.doneButton.setTitle(doneButtonTitle, for: .normal)
if showCancelButton {
self.cancelButton.setTitle(cancelButtonTitle, for: .normal)
}
self.datePickerMode = datePickerMode
self.callback = callback
self.defaultDate = defaultDate
self.datePicker.datePickerMode = self.datePickerMode ?? UIDatePickerMode.date
self.datePicker.date = self.defaultDate ?? Date()
self.datePicker.maximumDate = maximumDate
self.datePicker.minimumDate = minimumDate
/* Add dialog to main window */
guard let appDelegate = UIApplication.shared.delegate else { fatalError() }
guard let window = appDelegate.window else { fatalError() }
window?.addSubview(self)
window?.bringSubview(toFront: self)
window?.endEditing(true)
NotificationCenter.default.addObserver(self, selector: .deviceOrientationDidChange, name: NSNotification.Name.UIDeviceOrientationDidChange, object: nil)
/* Anim */
UIView.animate(
withDuration: 0.2,
delay: 0,
options: .curveEaseInOut,
animations: {
self.backgroundColor = UIColor(red: 0, green: 0, blue: 0, alpha: 0.4)
self.dialogView!.layer.opacity = 1
self.dialogView!.layer.transform = CATransform3DMakeScale(1, 1, 1)
}
)
}
/// Dialog close animation then cleaning and removing the view from the parent
private func close() {
NotificationCenter.default.removeObserver(self)
let currentTransform = self.dialogView.layer.transform
let startRotation = (self.value(forKeyPath: "layer.transform.rotation.z") as? NSNumber) as? Double ?? 0.0
let rotation = CATransform3DMakeRotation((CGFloat)(-startRotation + M_PI * 270 / 180), 0, 0, 0)
self.dialogView.layer.transform = CATransform3DConcat(rotation, CATransform3DMakeScale(1, 1, 1))
self.dialogView.layer.opacity = 1
UIView.animate(
withDuration: 0.2,
delay: 0,
options: [],
animations: {
self.backgroundColor = UIColor(red: 0, green: 0, blue: 0, alpha: 0)
self.dialogView.layer.transform = CATransform3DConcat(currentTransform, CATransform3DMakeScale(0.6, 0.6, 1))
self.dialogView.layer.opacity = 0
}) { (finished) in
for v in self.subviews {
v.removeFromSuperview()
}
self.removeFromSuperview()
self.setupView()
}
}
/// Creates the container view here: create the dialog, then add the custom content and buttons
private func createContainerView() -> UIView {
let screenSize = countScreenSize()
let dialogSize = CGSize(
width: 300,
height: 230
+ kDatePickerDialogDefaultButtonHeight
+ kDatePickerDialogDefaultButtonSpacerHeight)
// For the black background
self.frame = CGRect(x: 0, y: 0, width: screenSize.width, height: screenSize.height)
// This is the dialog's container; we attach the custom content and the buttons to this one
let dialogContainer = UIView(frame: CGRect(x: (screenSize.width - dialogSize.width) / 2, y: (screenSize.height - dialogSize.height) / 2, width: dialogSize.width, height: dialogSize.height))
// First, we style the dialog to match the iOS8 UIAlertView >>>
let gradient: CAGradientLayer = CAGradientLayer(layer: self.layer)
gradient.frame = dialogContainer.bounds
gradient.colors = [UIColor(red: 218 / 255, green: 218 / 255, blue: 218 / 255, alpha: 1).cgColor,
UIColor(red: 233 / 255, green: 233 / 255, blue: 233 / 255, alpha: 1).cgColor,
UIColor(red: 218 / 255, green: 218 / 255, blue: 218 / 255, alpha: 1).cgColor]
let cornerRadius = kDatePickerDialogCornerRadius
gradient.cornerRadius = cornerRadius
dialogContainer.layer.insertSublayer(gradient, at: 0)
dialogContainer.layer.cornerRadius = cornerRadius
dialogContainer.layer.borderColor = UIColor(red: 198 / 255, green: 198 / 255, blue: 198 / 255, alpha: 1).cgColor
dialogContainer.layer.borderWidth = 1
dialogContainer.layer.shadowRadius = cornerRadius + 5
dialogContainer.layer.shadowOpacity = 0.1
dialogContainer.layer.shadowOffset = CGSize(width: 0 - (cornerRadius + 5) / 2, height: 0 - (cornerRadius + 5) / 2)
dialogContainer.layer.shadowColor = UIColor.black.cgColor
dialogContainer.layer.shadowPath = UIBezierPath(roundedRect: dialogContainer.bounds, cornerRadius: dialogContainer.layer.cornerRadius).cgPath
// There is a line above the button
let lineView = UIView(frame: CGRect(x: 0, y: dialogContainer.bounds.size.height - kDatePickerDialogDefaultButtonHeight - kDatePickerDialogDefaultButtonSpacerHeight, width: dialogContainer.bounds.size.width, height: kDatePickerDialogDefaultButtonSpacerHeight))
lineView.backgroundColor = UIColor(red: 198 / 255, green: 198 / 255, blue: 198 / 255, alpha: 1)
dialogContainer.addSubview(lineView)
//Title
self.titleLabel = UILabel(frame: CGRect(x: 10, y: 10, width: 280, height: 30))
self.titleLabel.textAlignment = .center
self.titleLabel.font = UIFont.boldSystemFont(ofSize: 17)
dialogContainer.addSubview(self.titleLabel)
self.datePicker = UIDatePicker(frame: CGRect(x: 0, y: 30, width: 0, height: 0))
self.datePicker.autoresizingMask = .flexibleRightMargin
self.datePicker.frame.size.width = 300
self.datePicker.frame.size.height = 216
dialogContainer.addSubview(self.datePicker)
// Add the buttons
addButtonsToView(container: dialogContainer)
return dialogContainer
}
/// Add buttons to container
private func addButtonsToView(container: UIView) {
var buttonWidth = container.bounds.size.width / 2
var leftButtonFrame = CGRect(
x: 0,
y: container.bounds.size.height - kDatePickerDialogDefaultButtonHeight,
width: buttonWidth,
height: kDatePickerDialogDefaultButtonHeight
)
var rightButtonFrame = CGRect(
x: buttonWidth,
y: container.bounds.size.height - kDatePickerDialogDefaultButtonHeight,
width: buttonWidth,
height: kDatePickerDialogDefaultButtonHeight
)
if showCancelButton == false {
buttonWidth = container.bounds.size.width
leftButtonFrame = CGRect()
rightButtonFrame = CGRect(
x: 0,
y: container.bounds.size.height - kDatePickerDialogDefaultButtonHeight,
width: buttonWidth,
height: kDatePickerDialogDefaultButtonHeight
)
}
let interfaceLayoutDirection = UIApplication.shared.userInterfaceLayoutDirection
let isLeftToRightDirection = interfaceLayoutDirection == .leftToRight
if showCancelButton {
self.cancelButton = UIButton(type: .custom) as UIButton
self.cancelButton.frame = isLeftToRightDirection ? leftButtonFrame : rightButtonFrame
self.cancelButton.setTitleColor(UIColor(red: 0, green: 0.5, blue: 1, alpha: 1), for: .normal)
self.cancelButton.setTitleColor(UIColor(red: 0.2, green: 0.2, blue: 0.2, alpha: 0.5), for: .highlighted)
self.cancelButton.titleLabel!.font = UIFont.boldSystemFont(ofSize: 14)
self.cancelButton.layer.cornerRadius = kDatePickerDialogCornerRadius
self.cancelButton.addTarget(self, action: .buttonTapped, for: .touchUpInside)
container.addSubview(self.cancelButton)
}
self.doneButton = UIButton(type: .custom) as UIButton
self.doneButton.frame = isLeftToRightDirection ? rightButtonFrame : leftButtonFrame
self.doneButton.tag = kDatePickerDialogDoneButtonTag
self.doneButton.setTitleColor(UIColor(red: 0, green: 0.5, blue: 1, alpha: 1), for: .normal)
self.doneButton.setTitleColor(UIColor(red: 0.2, green: 0.2, blue: 0.2, alpha: 0.5), for: .highlighted)
self.doneButton.titleLabel!.font = UIFont.boldSystemFont(ofSize: 14)
self.doneButton.layer.cornerRadius = kDatePickerDialogCornerRadius
self.doneButton.addTarget(self, action: .buttonTapped, for: .touchUpInside)
container.addSubview(self.doneButton)
}
func buttonTapped(sender: UIButton!) {
if sender.tag == kDatePickerDialogDoneButtonTag {
self.callback?(self.datePicker.date)
} else {
self.callback?(nil)
}
close()
}
// MARK: - Helpers
/// Count and return the screen's size
func countScreenSize() -> CGSize {
let screenWidth = UIScreen.main.bounds.size.width
let screenHeight = UIScreen.main.bounds.size.height
return CGSize(width: screenWidth, height: screenHeight)
}
}
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