mirror of
https://gitlab.opencode.de/bwi/bundesmessenger/clients/bundesmessenger-ios.git
synced 2026-04-26 19:34:25 +02:00
Create QRCodeReaderViewController used to scan a QR code.
This commit is contained in:
SBiOSoftWhare
+62
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<?xml version="1.0" encoding="UTF-8"?>
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<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="14490.70" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" useSafeAreas="YES" colorMatched="YES" initialViewController="wTo-mk-4wn">
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<device id="retina6_1" orientation="portrait">
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<adaptation id="fullscreen"/>
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</device>
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<dependencies>
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<deployment identifier="iOS"/>
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<plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="14490.49"/>
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<capability name="Safe area layout guides" minToolsVersion="9.0"/>
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<capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
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</dependencies>
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<scenes>
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<!--Code Reader View Controller-->
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<scene sceneID="yHG-c0-Vr8">
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<objects>
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<viewController id="wTo-mk-4wn" customClass="QRCodeReaderViewController" customModule="Riot" customModuleProvider="target" sceneMemberID="viewController">
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<view key="view" contentMode="scaleToFill" id="eyK-7t-b1z">
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<rect key="frame" x="0.0" y="0.0" width="414" height="896"/>
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<autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
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<subviews>
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<view contentMode="scaleToFill" translatesAutoresizingMaskIntoConstraints="NO" id="Rdg-xW-u5X">
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<rect key="frame" x="0.0" y="0.0" width="414" height="896"/>
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<color key="backgroundColor" white="0.0" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
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</view>
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<button opaque="NO" contentMode="scaleToFill" contentHorizontalAlignment="center" contentVerticalAlignment="center" lineBreakMode="middleTruncation" translatesAutoresizingMaskIntoConstraints="NO" id="HjZ-fK-SvP" customClass="CloseButton" customModule="Riot" customModuleProvider="target">
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<rect key="frame" x="357" y="57" width="44" height="44"/>
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<constraints>
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<constraint firstAttribute="width" secondItem="HjZ-fK-SvP" secondAttribute="height" multiplier="1:1" id="csD-MZ-BJU"/>
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<constraint firstAttribute="height" constant="44" id="tWy-os-fYQ"/>
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</constraints>
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<fontDescription key="fontDescription" type="system" pointSize="15"/>
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<state key="normal" image="close_button"/>
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<connections>
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<action selector="closeButtonAction:" destination="wTo-mk-4wn" eventType="touchUpInside" id="Dyd-I3-uHS"/>
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</connections>
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</button>
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</subviews>
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<color key="backgroundColor" white="0.0" alpha="1" colorSpace="custom" customColorSpace="genericGamma22GrayColorSpace"/>
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<constraints>
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<constraint firstAttribute="trailing" secondItem="Rdg-xW-u5X" secondAttribute="trailing" id="DzV-SN-Iog"/>
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<constraint firstItem="Rdg-xW-u5X" firstAttribute="top" secondItem="eyK-7t-b1z" secondAttribute="top" id="J4V-oh-elV"/>
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<constraint firstAttribute="bottom" secondItem="Rdg-xW-u5X" secondAttribute="bottom" id="TD5-6H-rgZ"/>
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<constraint firstItem="HjZ-fK-SvP" firstAttribute="top" secondItem="Ndt-0H-a0X" secondAttribute="top" constant="13" id="gkO-XS-hSc"/>
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<constraint firstItem="Rdg-xW-u5X" firstAttribute="leading" secondItem="eyK-7t-b1z" secondAttribute="leading" id="iLN-43-eOy"/>
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<constraint firstItem="Ndt-0H-a0X" firstAttribute="trailing" secondItem="HjZ-fK-SvP" secondAttribute="trailing" constant="13" id="qyo-8y-264"/>
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</constraints>
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<viewLayoutGuide key="safeArea" id="Ndt-0H-a0X"/>
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</view>
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<connections>
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<outlet property="closeButton" destination="HjZ-fK-SvP" id="mGR-8w-Hpt"/>
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<outlet property="codeReaderContainerView" destination="Rdg-xW-u5X" id="Sxz-D5-Axf"/>
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</connections>
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</viewController>
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<placeholder placeholderIdentifier="IBFirstResponder" id="oGu-Wb-sGr" userLabel="First Responder" sceneMemberID="firstResponder"/>
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</objects>
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<point key="canvasLocation" x="-261" y="29"/>
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</scene>
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</scenes>
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<resources>
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<image name="close_button" width="16" height="16"/>
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</resources>
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</document>
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+270
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/*
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Copyright 2020 New Vector Ltd
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import UIKit
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import ZXingObjC
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protocol QRCodeReaderViewControllerDelegate: class {
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func qrCodeReaderViewController(_ viewController: QRCodeReaderViewController, didFound payloadData: Data)
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func qrCodeReaderViewControllerDidCancel(_ viewController: QRCodeReaderViewController)
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}
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/// QRCodeReaderViewController is a view controller used to scan a QR code
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/// Some methods are based on [ZXing sample](https://github.com/zxingify/zxingify-objc/blob/master/examples/BarcodeScannerSwift/BarcodeScannerSwift/ViewController.swift)
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final class QRCodeReaderViewController: UIViewController {
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// MARK: - Constants
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// MARK: - Properties
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// MARK: Outlets
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@IBOutlet private weak var closeButton: CloseButton!
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@IBOutlet private weak var codeReaderContainerView: UIView!
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// MARK: Private
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private var theme: Theme!
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private var errorPresenter: MXKErrorPresentation!
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private lazy var zxCapture: ZXCapture = ZXCapture()
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private var captureSizeTransform: CGAffineTransform?
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private var isScanning: Bool = false
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private var isFirstApplyOrientation: Bool = false
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// MARK: Public
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weak var delegate: QRCodeReaderViewControllerDelegate?
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// MARK: - Setup
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class func instantiate() -> QRCodeReaderViewController {
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let viewController = StoryboardScene.QRCodeReaderViewController.initialScene.instantiate()
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viewController.theme = ThemeService.shared().theme
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return viewController
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}
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deinit {
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self.stopScanning()
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}
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// MARK: - Life cycle
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override func viewDidLoad() {
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super.viewDidLoad()
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// Do any additional setup after loading the view.
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self.setupViews()
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self.errorPresenter = MXKErrorAlertPresentation()
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self.registerThemeServiceDidChangeThemeNotification()
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self.update(theme: self.theme)
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}
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override func viewWillAppear(_ animated: Bool) {
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super.viewWillAppear(animated)
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self.startScanning()
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}
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override public func viewWillDisappear(_ animated: Bool) {
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self.stopScanning()
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super.viewWillDisappear(animated)
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}
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override var preferredStatusBarStyle: UIStatusBarStyle {
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return self.theme.statusBarStyle
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}
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override func viewDidLayoutSubviews() {
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super.viewDidLayoutSubviews()
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guard isFirstApplyOrientation == false else {
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return
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}
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isFirstApplyOrientation = true
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applyOrientation()
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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) in
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// do nothing
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}, completion: { [weak self] (context) in
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guard let self = self else {
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return
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}
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self.applyOrientation()
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})
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}
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// MARK: - Public
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func startScanning() {
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self.zxCapture.start()
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isScanning = true
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}
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func stopScanning() {
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self.zxCapture.stop()
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isScanning = false
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}
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// MARK: - Private
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private func update(theme: Theme) {
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self.theme = theme
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self.closeButton.update(theme: theme)
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}
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private func registerThemeServiceDidChangeThemeNotification() {
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NotificationCenter.default.addObserver(self, selector: #selector(themeDidChange), name: .themeServiceDidChangeTheme, object: nil)
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}
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@objc private func themeDidChange() {
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self.update(theme: ThemeService.shared().theme)
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}
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private func setupViews() {
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self.setupQRCodeReaderView()
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}
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private func setupQRCodeReaderView() {
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zxCapture.delegate = self
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zxCapture.camera = zxCapture.back()
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zxCapture.layer.frame = codeReaderContainerView.bounds
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codeReaderContainerView.layer.addSublayer(zxCapture.layer)
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}
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private func applyOrientation() {
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let orientation = UIApplication.shared.statusBarOrientation
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let captureRotation: Double
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let scanRectRotation: Double
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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: orientation)
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let angleRadius = captureRotation / 180.0 * Double.pi
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let captureTranform = CGAffineTransform(rotationAngle: CGFloat(angleRadius))
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zxCapture.transform = captureTranform
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zxCapture.rotation = CGFloat(scanRectRotation)
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zxCapture.layer.frame = codeReaderContainerView.frame
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}
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private func applyRectOfInterest(orientation: UIInterfaceOrientation) {
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guard var transformedVideoRect = codeReaderContainerView?.frame,
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let cameraSessionPreset = zxCapture.sessionPreset
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else { return }
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var scaleVideoX, scaleVideoY: CGFloat
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var videoHeight, videoWidth: CGFloat
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// Currently support only for 1920x1080 || 1280x720
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if cameraSessionPreset == AVCaptureSession.Preset.hd1920x1080.rawValue {
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videoHeight = 1080.0
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videoWidth = 1920.0
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} else {
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videoHeight = 720.0
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videoWidth = 1280.0
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}
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if orientation == UIInterfaceOrientation.portrait {
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scaleVideoX = self.view.frame.width / videoHeight
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scaleVideoY = self.view.frame.height / videoWidth
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// Convert CGPoint under portrait mode to map with orientation of image
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// because the image will be cropped before rotate
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// reference: https://github.com/TheLevelUp/ZXingObjC/issues/222
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let realX = transformedVideoRect.origin.y
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let realY = self.view.frame.size.width - transformedVideoRect.size.width - transformedVideoRect.origin.x
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let realWidth = transformedVideoRect.size.height
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let realHeight = transformedVideoRect.size.width
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transformedVideoRect = CGRect(x: realX, y: realY, width: realWidth, height: realHeight)
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} else {
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scaleVideoX = self.view.frame.width / videoWidth
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scaleVideoY = self.view.frame.height / videoHeight
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}
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captureSizeTransform = CGAffineTransform(scaleX: 1.0/scaleVideoX, y: 1.0/scaleVideoY)
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guard let _captureSizeTransform = captureSizeTransform else {
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return
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}
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let transformRect = transformedVideoRect.applying(_captureSizeTransform)
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zxCapture.scanRect = transformRect
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}
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// MARK: - Actions
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@IBAction private func closeButtonAction(_ sender: Any) {
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self.delegate?.qrCodeReaderViewControllerDidCancel(self)
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}
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}
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// MARK: - ZXCaptureDelegate
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extension QRCodeReaderViewController: ZXCaptureDelegate {
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func captureCameraIsReady(_ capture: ZXCapture!) {
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isScanning = true
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}
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func captureResult(_ capture: ZXCapture!, result: ZXResult!) {
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guard let zxResult = result, isScanning == true else {
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return
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}
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guard zxResult.barcodeFormat == kBarcodeFormatQRCode else {
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return
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}
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self.stopScanning()
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if let bytes = result.resultMetadata.object(forKey: kResultMetadataTypeByteSegments.rawValue) as? NSArray,
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let byteArray = bytes.firstObject as? ZXByteArray {
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let data = Data(bytes: UnsafeRawPointer(byteArray.array), count: Int(byteArray.length))
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self.delegate?.qrCodeReaderViewController(self, didFound: data)
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}
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}
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}
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