iOS zxing scanner, iOS localization
This commit is contained in:
Ivan Murashov
@@ -1,250 +1,308 @@
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//
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// ScannerViewController.swift
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// Runner
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//
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// Created by Ivan Murashov on 13/07/2017.
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// Copyright © 2017 The Chromium Authors. All rights reserved.
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//
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import UIKit
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import Flutter
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extension ZBarSymbolSet: Sequence {
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//public typealias Element = ZBarSymbol
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//public typealias Iterator = NSFastEnumerationIterator
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public func makeIterator() -> NSFastEnumerationIterator {
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return NSFastEnumerationIterator(self)
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}
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}
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@objc class ScannerViewController: UIViewController, ZBarReaderDelegate, UITextFieldDelegate {
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@objc class ScannerViewController: UIViewController, ZXCaptureDelegate, UITextFieldDelegate {
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enum AppLocale {
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case ru
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case en
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case ru
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case en
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}
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enum ButtonState {
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case card
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case phone
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var icon: UIImage {
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switch self {
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case .card: return UIImage(named: "card")!
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case .phone: return UIImage(named: "phone")!
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case .card: return UIImage(named: "card")!
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case .phone: return UIImage(named: "phone")!
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}
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}
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var searchType: String {
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switch self {
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case .card: return "card"
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case .phone: return "phone"
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case .card: return "card"
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case .phone: return "phone"
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}
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}
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}
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var appLocale: AppLocale
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// @IBOutlet weak var decodedLabel: UILabel!
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private var captureSizeTransform: CGAffineTransform?
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var buttonState: ButtonState = .card
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var platformChannel: FlutterMethodChannel?
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let readerViewController = ZBarReaderViewController()
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// Квадрат для наведения на цель (надеюсь)
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let scanRectView = UIView()
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//Вьюшка для верхнего меню
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let topView = UIView()
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//Окно ввода кода
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let textField = UITextField()
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//Кнопка настроек
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var settingButton: UIButton!
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var strings = [String:String]()
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required init?(coder aDecoder: NSCoder) {
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self.appLocale = .en
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super.init(coder: aDecoder)
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}
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init(locale: String) {
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switch locale {
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case "ru": self.appLocale = .ru; break
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default: self.appLocale = .en
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}
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init(strings: [String: String]) {
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super.init(nibName: nil, bundle: nil)
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strings.forEach { (k,v) in self.strings[k] = v }
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}
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func getCardHint() -> String {
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switch self.appLocale {
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case .ru: return "Ввести номер карты"
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default: return "Enter the barcode"
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}
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}
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func getPhoneHint() -> String {
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switch self.appLocale {
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case .ru: return "Телефон 79XXXXXXXXX"
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default: return "Phone 79XXXXXXXXX"
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}
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}
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func getInputHint() -> String {
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switch self.buttonState {
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case .card: return self.getCardHint()
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case .phone: return self.getPhoneHint()
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case .card: return strings["enter_manual"]!
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case .phone: return strings["enter_phone"]!
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}
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}
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func getErrorTitle() -> String {
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switch self.appLocale {
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case .ru: return "Ошибка"
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default: return "Error"
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}
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}
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func getCardErrorText() -> String {
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switch self.appLocale {
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case .ru: return "Пользователь с номером карты %@ не найден"
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default: return "User with card number %@ not found"
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}
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}
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func getPhoneErrorText() -> String {
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switch self.appLocale {
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case .ru: return "Пользователь с номером телефона %@ не найден"
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default: return "User with phone number %@ not found"
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}
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}
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func getErrorText() -> String {
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switch self.buttonState {
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case .card: return self.getCardErrorText()
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case .phone: return self.getPhoneErrorText()
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case .card: return strings["user_card_not_found"]!
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case .phone: return strings["user_phone_not_found"]!
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}
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}
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func getDismissText() -> String {
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switch self.appLocale {
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case .ru: return "Скрыть"
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default: return "Dismiss"
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}
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}
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let capture: ZXCapture = ZXCapture()
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override func viewDidLoad() {
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super.viewDidLoad()
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readerViewController.readerDelegate = self
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readerViewController.readerView.zoom = 1.0
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readerViewController.showsZBarControls = false
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capture.camera = capture.back()
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capture.focusMode = .continuousAutoFocus
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view.layer.addSublayer((capture.layer)!)
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view.addSubview(scanRectView)
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settingButton = UIButton(type: .system)
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settingButton.addTarget(self, action: #selector(ScannerViewController.buttonTouch), for: .touchUpInside)
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self.addChildViewController(readerViewController)
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self.view.addSubview(readerViewController.view)
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readerViewController.didMove(toParentViewController: self)
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readerViewController.view.addSubview(topView)
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topView.addSubview(textField)
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topView.addSubview(settingButton)
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view.addSubview(topView)
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view.bringSubview(toFront: topView)
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textField.delegate = self
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//textField.keyboardType = .numberPad
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//Looks for single or multiple taps.
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let tap = UITapGestureRecognizer(target: self, action: #selector(ScannerViewController.hideKeyboard))
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readerViewController.view.addGestureRecognizer(tap)
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view.addGestureRecognizer(tap)
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settingButton.setImage(self.buttonState.icon, for: .normal)
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textField.placeholder = self.getInputHint()
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}
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override func viewWillAppear(_ animated: Bool) {
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super.viewWillAppear(animated)
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topView.backgroundColor = UIColor.white
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textField.borderStyle = .roundedRect
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capture.delegate = self
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applyOrientation()
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}
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override func viewWillLayoutSubviews() {
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scanRectView.frame = view.bounds
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topView.frame = CGRect(x: 0, y: 0, width: view.frame.size.width, height: 56)
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settingButton.frame = CGRect(x: 8, y: 26, width: 20, height: 20)
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textField.frame = CGRect(x: settingButton.frame.maxX + 8, y: 21,
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width: view.frame.size.width - settingButton.frame.maxX - 16, height: 30)
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}
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func hideKeyboard() {
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view.endEditing(false)
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}
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func buttonTouch(){
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switch self.buttonState {
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case .card: self.buttonState = .phone
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case .phone: self.buttonState = .card
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case .card: self.buttonState = .phone
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case .phone: self.buttonState = .card
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}
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settingButton.setImage(self.buttonState.icon, for: .normal)
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textField.placeholder = self.getInputHint()
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}
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func textFieldShouldReturn(_ textField: UITextField) -> Bool {
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sendResult(textField.text!)
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return true
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}
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func sendResult(_ str: String) {
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platformChannel?.invokeMethod("findUser", arguments: [str, buttonState.searchType], result: { (result: Any?) in
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if result is FlutterError {
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self.showErrorAlert(str)
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} else {
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self.dismiss(animated: true) {
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self.platformChannel?.invokeMethod("purchase", arguments: [result, str])
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}
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}
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print("result: \(result.debugDescription )")
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})
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}
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func showErrorAlert(_ str: String) {
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let alertController = UIAlertController(
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title: self.getErrorTitle(),
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title: strings["error"]!,
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message: String(format: self.getErrorText(), str),
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preferredStyle: UIAlertControllerStyle.alert
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)
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alertController.addAction(UIAlertAction(title: self.getDismissText(), style: UIAlertActionStyle.default,handler: nil))
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// if let appDelegate = UIApplication.shared.delegate as? FlutterAppDelegate {
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// appDelegate.window.rootViewController?.present(alertController, animated: true, completion: nil)
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// }
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alertController.addAction(UIAlertAction(title: strings["dismiss"]!, style: UIAlertActionStyle.default,handler: nil))
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self.present(alertController, animated: true, completion: nil)
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}
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override func viewWillAppear(_ animated: Bool) {
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topView.backgroundColor = UIColor.white
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textField.borderStyle = .roundedRect
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super.viewWillAppear(animated)
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}
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override func viewDidAppear(_ animated: Bool) {
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super.viewDidAppear(animated)
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}
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override func viewWillLayoutSubviews() {
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readerViewController.view.frame = view.bounds
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topView.frame = CGRect(x: 0, y: 0, width: readerViewController.view.frame.size.width, height: 40)
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textField.frame = CGRect(x: settingButton.frame.maxX + 8 + 20 + 5, y: 5, width: readerViewController.view.frame.size.width - 50, height: 30)
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settingButton.frame = CGRect(x: 8, y: 10, width: 20, height: 20)
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}
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func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
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guard let symbols = info[ZBarReaderControllerResults] as? ZBarSymbolSet else { return }
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for symbol in symbols {
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if let symbol = symbol as? ZBarSymbol, let data = symbol.data {
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sendResult(data)
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}
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}
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}
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override func didReceiveMemoryWarning() {
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super.didReceiveMemoryWarning()
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}
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deinit {
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capture.layer.removeFromSuperlayer()
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}
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override func viewWillTransition(to size: CGSize, with coordinator: UIViewControllerTransitionCoordinator) {
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super.viewWillTransition(to: size, with: coordinator)
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coordinator.animate(alongsideTransition: {(_ context: UIViewControllerTransitionCoordinatorContext) -> Void in
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}, completion: {(_ context: UIViewControllerTransitionCoordinatorContext) -> Void in
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self.applyOrientation()
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})
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}
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func applyOrientation() {
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print("APPLY ORIENTATION")
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let orientation: UIInterfaceOrientation = UIApplication.shared.statusBarOrientation
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var scanRectRotation: Float
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var captureRotation: Float
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switch orientation {
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case .portrait:
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captureRotation = 0
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scanRectRotation = 90
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case .landscapeLeft:
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captureRotation = 90
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scanRectRotation = 180
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case .landscapeRight:
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captureRotation = 270
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scanRectRotation = 0
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case .portraitUpsideDown:
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captureRotation = 180
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scanRectRotation = 270
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default:
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captureRotation = 0
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scanRectRotation = 90
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}
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applyRectOfInterest(orientation)
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let transform = CGAffineTransform(rotationAngle: CGFloat(captureRotation / 180 * .pi))
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capture.transform = transform
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capture.rotation = CGFloat(scanRectRotation)
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capture.layer.frame = view.frame
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}
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func applyRectOfInterest(_ orientation: UIInterfaceOrientation) {
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var scaleVideo: CGFloat
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var scaleVideoX: CGFloat
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var scaleVideoY: CGFloat
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var videoSizeX: CGFloat
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var videoSizeY: CGFloat
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var transformedVideoRect: CGRect = scanRectView.frame
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videoSizeX = 720
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videoSizeY = 1280
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if UIInterfaceOrientationIsPortrait(orientation) {
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scaleVideoX = view.frame.size.width / videoSizeX
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scaleVideoY = view.frame.size.height / videoSizeY
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scaleVideo = max(scaleVideoX, scaleVideoY)
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if scaleVideoX > scaleVideoY {
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transformedVideoRect.origin.y += (scaleVideo * videoSizeY - view.frame.size.height) / 2
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}
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else {
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transformedVideoRect.origin.x += (scaleVideo * videoSizeX - view.frame.size.width) / 2
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}
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}
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else {
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scaleVideoX = view.frame.size.width / videoSizeY
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scaleVideoY = view.frame.size.height / videoSizeX
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scaleVideo = max(scaleVideoX, scaleVideoY)
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if scaleVideoX > scaleVideoY {
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transformedVideoRect.origin.y += (scaleVideo * videoSizeX - view.frame.size.height) / 2
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}
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else {
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transformedVideoRect.origin.x += (scaleVideo * videoSizeY - view.frame.size.width) / 2
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}
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}
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captureSizeTransform = CGAffineTransform(scaleX: 1 / scaleVideo, y: 1 / scaleVideo)
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capture.scanRect = transformedVideoRect.applying(captureSizeTransform!)
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}
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// MARK: - Private Methods
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func barcodeFormat(toString format: ZXBarcodeFormat) -> String {
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switch format {
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case kBarcodeFormatAztec:
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return "Aztec"
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case kBarcodeFormatCodabar:
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return "CODABAR"
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case kBarcodeFormatCode39:
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return "Code 39"
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case kBarcodeFormatCode93:
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return "Code 93"
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case kBarcodeFormatCode128:
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return "Code 128"
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case kBarcodeFormatDataMatrix:
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return "Data Matrix"
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case kBarcodeFormatEan8:
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return "EAN-8"
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case kBarcodeFormatEan13:
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return "EAN-13"
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case kBarcodeFormatITF:
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return "ITF"
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case kBarcodeFormatPDF417:
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return "PDF417"
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case kBarcodeFormatQRCode:
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return "QR Code"
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case kBarcodeFormatRSS14:
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return "RSS 14"
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case kBarcodeFormatRSSExpanded:
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return "RSS Expanded"
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case kBarcodeFormatUPCA:
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return "UPCA"
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case kBarcodeFormatUPCE:
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return "UPCE"
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case kBarcodeFormatUPCEANExtension:
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return "UPC/EAN extension"
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default:
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return "Unknown"
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}
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}
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// MARK: - ZXCaptureDelegate Methods
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func captureResult(_ capture: ZXCapture, result: ZXResult) {
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let inverse: CGAffineTransform = captureSizeTransform!.inverted()
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var points = [AnyHashable]()
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var location = ""
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for resultPoint in result.resultPoints {
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let p = resultPoint as! ZXResultPoint
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let cgPoint = CGPoint(x: CGFloat(p.x), y: CGFloat(p.y))
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var transformedPoint: CGPoint = cgPoint.applying(inverse)
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transformedPoint = scanRectView.convert(transformedPoint, to: scanRectView.window)
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let windowPointValue = NSValue(cgPoint: transformedPoint)
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location = "\(location) (\(transformedPoint.x), \(transformedPoint.y))"
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points.append(windowPointValue)
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}
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// We got a result. Display information about the result onscreen.
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let formatString: String = barcodeFormat(toString: result.barcodeFormat)
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sendResult(result.text)
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print(result.text)
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self.capture.stop()
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DispatchQueue.main.asyncAfter(deadline: DispatchTime.now() + Double(2 * Double(NSEC_PER_SEC)) / Double(NSEC_PER_SEC), execute: {() -> Void in
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self.capture.start()
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})
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}
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}
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