新增扫码区域背景图片设置；新增环境光线的监听。

Source/LBXScanView.swift

@@ -181,7 +181,7 @@ open class LBXScanView: UIView {
  // 执行绘画
  context.strokePath()
 
- if viewStyle.isNeedShowRetangle {
+ if viewStyle.isNeedShowRetangle && viewStyle.scanBgImage == nil {
  // 中间画矩形(正方形)
  context.setStrokeColor(viewStyle.colorRetangleLine.cgColor)
  context.setLineWidth(viewStyle.widthRetangleLine)
@@ -196,72 +196,79 @@ open class LBXScanView: UIView {
  scanRetangleRect = CGRect(x: XRetangleLeft, y: YMinRetangle, width: sizeRetangle.width, height: sizeRetangle.height)
 
 
- // 画矩形框4格外围相框角
-
- // 相框角的宽度和高度
- let wAngle = viewStyle.photoframeAngleW
- let hAngle = viewStyle.photoframeAngleH
-
- // 4个角的 线的宽度
- let linewidthAngle = viewStyle.photoframeLineW // 经验参数：6和4
-
- // 画扫码矩形以及周边半透明黑色坐标参数
- var diffAngle = linewidthAngle / 3
- diffAngle = linewidthAngle / 2 // 框外面4个角，与框有缝隙
- diffAngle = linewidthAngle / 2 // 框4个角 在线上加4个角效果
- diffAngle = 0 // 与矩形框重合
-
- switch viewStyle.photoframeAngleStyle {
- case .Outer: diffAngle = linewidthAngle / 3 // 框外面4个角，与框紧密联系在一起
- case .On: diffAngle = 0
- case .Inner: diffAngle = -viewStyle.photoframeLineW / 2
+ if let bgImage = viewStyle.scanBgImage {
+ let imgV = UIImageView.init(image: bgImage)
+ let scanFrame = getScanRectForAnimation()
+ imgV.frame = CGRect(x: scanFrame.origin.x - 5, y: scanFrame.origin.y - 5, width: scanFrame.size.width + 10, height: scanFrame.size.height + 10)
+ self.addSubview(imgV)
+ } else {
+ // 画矩形框4格外围相框角
+
+ // 相框角的宽度和高度
+ let wAngle = viewStyle.photoframeAngleW
+ let hAngle = viewStyle.photoframeAngleH
+
+ // 4个角的 线的宽度
+ let linewidthAngle = viewStyle.photoframeLineW // 经验参数：6和4
+
+ // 画扫码矩形以及周边半透明黑色坐标参数
+ var diffAngle = linewidthAngle / 3
+ diffAngle = linewidthAngle / 2 // 框外面4个角，与框有缝隙
+ diffAngle = linewidthAngle / 2 // 框4个角 在线上加4个角效果
+ diffAngle = 0 // 与矩形框重合
+
+ switch viewStyle.photoframeAngleStyle {
+ case .Outer: diffAngle = linewidthAngle / 3 // 框外面4个角，与框紧密联系在一起
+ case .On: diffAngle = 0
+ case .Inner: diffAngle = -viewStyle.photoframeLineW / 2
+ }
+
+ context.setStrokeColor(viewStyle.colorAngle.cgColor)
+ context.setFillColor(red: 1.0, green: 1.0, blue: 1.0, alpha: 1.0)
+
+ // Draw them with a 2.0 stroke width so they are a bit more visible.
+ context.setLineWidth(linewidthAngle)
+
+
+ //
+ let leftX = XRetangleLeft - diffAngle
+ let topY = YMinRetangle - diffAngle
+ let rightX = XRetangleRight + diffAngle
+ let bottomY = YMaxRetangle + diffAngle
+
+ // 左上角水平线
+ context.move(to: CGPoint(x: leftX - linewidthAngle / 2, y: topY))
+ context.addLine(to: CGPoint(x: leftX + wAngle, y: topY))
+
+ // 左上角垂直线
+ context.move(to: CGPoint(x: leftX, y: topY - linewidthAngle / 2))
+ context.addLine(to: CGPoint(x: leftX, y: topY + hAngle))
+
+ // 左下角水平线
+ context.move(to: CGPoint(x: leftX - linewidthAngle / 2, y: bottomY))
+ context.addLine(to: CGPoint(x: leftX + wAngle, y: bottomY))
+
+ // 左下角垂直线
+ context.move(to: CGPoint(x: leftX, y: bottomY + linewidthAngle / 2))
+ context.addLine(to: CGPoint(x: leftX, y: bottomY - hAngle))
+
+ // 右上角水平线
+ context.move(to: CGPoint(x: rightX + linewidthAngle / 2, y: topY))
+ context.addLine(to: CGPoint(x: rightX - wAngle, y: topY))
+
+ // 右上角垂直线
+ context.move(to: CGPoint(x: rightX, y: topY - linewidthAngle / 2))
+ context.addLine(to: CGPoint(x: rightX, y: topY + hAngle))
+
+ // 右下角水平线
+ context.move(to: CGPoint(x: rightX + linewidthAngle / 2, y: bottomY))
+ context.addLine(to: CGPoint(x: rightX - wAngle, y: bottomY))
+
+ // 右下角垂直线
+ context.move(to: CGPoint(x: rightX, y: bottomY + linewidthAngle / 2))
+ context.addLine(to: CGPoint(x: rightX, y: bottomY - hAngle))
  }
 
- context.setStrokeColor(viewStyle.colorAngle.cgColor)
- context.setFillColor(red: 1.0, green: 1.0, blue: 1.0, alpha: 1.0)
-
- // Draw them with a 2.0 stroke width so they are a bit more visible.
- context.setLineWidth(linewidthAngle)
-
-
- //
- let leftX = XRetangleLeft - diffAngle
- let topY = YMinRetangle - diffAngle
- let rightX = XRetangleRight + diffAngle
- let bottomY = YMaxRetangle + diffAngle
-
- // 左上角水平线
- context.move(to: CGPoint(x: leftX - linewidthAngle / 2, y: topY))
- context.addLine(to: CGPoint(x: leftX + wAngle, y: topY))
-
- // 左上角垂直线
- context.move(to: CGPoint(x: leftX, y: topY - linewidthAngle / 2))
- context.addLine(to: CGPoint(x: leftX, y: topY + hAngle))
-
- // 左下角水平线
- context.move(to: CGPoint(x: leftX - linewidthAngle / 2, y: bottomY))
- context.addLine(to: CGPoint(x: leftX + wAngle, y: bottomY))
-
- // 左下角垂直线
- context.move(to: CGPoint(x: leftX, y: bottomY + linewidthAngle / 2))
- context.addLine(to: CGPoint(x: leftX, y: bottomY - hAngle))
-
- // 右上角水平线
- context.move(to: CGPoint(x: rightX + linewidthAngle / 2, y: topY))
- context.addLine(to: CGPoint(x: rightX - wAngle, y: topY))
-
- // 右上角垂直线
- context.move(to: CGPoint(x: rightX, y: topY - linewidthAngle / 2))
- context.addLine(to: CGPoint(x: rightX, y: topY + hAngle))
-
- // 右下角水平线
- context.move(to: CGPoint(x: rightX + linewidthAngle / 2, y: bottomY))
- context.addLine(to: CGPoint(x: rightX - wAngle, y: bottomY))
-
- // 右下角垂直线
- context.move(to: CGPoint(x: rightX, y: bottomY + linewidthAngle / 2))
- context.addLine(to: CGPoint(x: rightX, y: bottomY - hAngle))
-
  context.strokePath()
  }
 

Source/LBXScanViewController.swift

@@ -46,6 +46,9 @@ open class LBXScanViewController: UIViewController {
  // 相机启动提示文字
  public var readyString: String! = "loading"
 
+ /// 没有从图片中识别到二维码
+ public var scanImageFailure: (() -> Void)?
+
  open override func viewDidLoad() {
  super.viewDidLoad()
 
@@ -84,21 +87,18 @@ open class LBXScanViewController: UIViewController {
  AVMetadataObject.ObjectType.ean13 as NSString,
  AVMetadataObject.ObjectType.code128 as NSString] as [AVMetadataObject.ObjectType]
  }
-
- scanObj = LBXScanWrapper(videoPreView: view,
- objType: arrayCodeType!,
- isCaptureImg: isNeedCodeImage,
- cropRect: cropRect,
- success: { [weak self] (arrayResult) -> Void in
- guard let strongSelf = self else {
- return
- }
- if !strongSelf.isSupportContinuous {
- // 停止扫描动画
- strongSelf.qRScanView?.stopScanAnimation()
- }
- strongSelf.handleCodeResult(arrayResult: arrayResult)
- })
+
+ scanObj = LBXScanWrapper(videoPreView: view, objType: arrayCodeType!, isCaptureImg: isNeedCodeImage, cropRect: cropRect, success: { [weak self] (arrayResult) -> Void in
+ guard let strongSelf = self else { return }
+ if !strongSelf.isSupportContinuous {
+ // 停止扫描动画
+ strongSelf.qRScanView?.stopScanAnimation()
+ }
+ strongSelf.handleCodeResult(arrayResult: arrayResult)
+ }, ambientLightValueClosure: { [weak self] value in
+ guard let strongSelf = self else { return }
+ strongSelf.ambientLightValueDidChange(value: value)
+ })
  }
 
  scanObj?.supportContinuous = isSupportContinuous;
@@ -144,6 +144,8 @@ open class LBXScanViewController: UIViewController {
  }
  }
 
+ open func ambientLightValueDidChange(value: Double) {}
+
  open override func viewWillDisappear(_ animated: Bool) {
  NSObject.cancelPreviousPerformRequests(withTarget: self)
  qRScanView?.stopScanAnimation()
@@ -177,6 +179,8 @@ extension LBXScanViewController: UIImagePickerControllerDelegate, UINavigationCo
  let arrayResult = LBXScanWrapper.recognizeQRImage(image: image)
  if !arrayResult.isEmpty {
  handleCodeResult(arrayResult: arrayResult)
+ } else {
+ scanImageFailure?()
  }
  }
 

Source/LBXScanViewStyle.swift

@@ -68,6 +68,9 @@ public struct LBXScanViewStyle {
 
  /// 动画效果的图像，如线条或网格的图像
  public var animationImage: UIImage?
+
+ /// 扫码区域的背景图片
+ public var scanBgImage: UIImage?
 
  //MARK: - 非识别区域颜色, 默认 RGBA (0,0,0,0.5)，范围（0--1）
 

Source/LBXScanWrapper.swift

@@ -33,11 +33,12 @@ public struct LBXScanResult {
 
 
 
-open class LBXScanWrapper: NSObject,AVCaptureMetadataOutputObjectsDelegate {
+open class LBXScanWrapper: NSObject, AVCaptureMetadataOutputObjectsDelegate, AVCaptureVideoDataOutputSampleBufferDelegate {
 
  let device = AVCaptureDevice.default(for: AVMediaType.video)
  var input: AVCaptureDeviceInput?
  var output: AVCaptureMetadataOutput
+ var videoDataOutput: AVCaptureVideoDataOutput
 
  let session = AVCaptureSession()
  var previewLayer: AVCaptureVideoPreviewLayer?
@@ -58,6 +59,8 @@ open class LBXScanWrapper: NSObject,AVCaptureMetadataOutputObjectsDelegate {
  //连续扫码
  var supportContinuous = false
 
+ /// 自动开启闪光灯后回调
+ var ambientLightValueClosure: ((Double) -> Void)?
 
  /**
  初始化设备
@@ -72,10 +75,13 @@ open class LBXScanWrapper: NSObject,AVCaptureMetadataOutputObjectsDelegate {
  objType: [AVMetadataObject.ObjectType] = [(AVMetadataObject.ObjectType.qr as NSString) as AVMetadataObject.ObjectType],
  isCaptureImg: Bool,
  cropRect: CGRect = .zero,
- success: @escaping (([LBXScanResult]) -> Void)) {
+ success: @escaping (([LBXScanResult]) -> Void),
+ ambientLightValueClosure: ((Double) -> Void)? = nil) {
 
+ self.ambientLightValueClosure = ambientLightValueClosure
  successBlock = success
  output = AVCaptureMetadataOutput()
+ videoDataOutput = AVCaptureVideoDataOutput()
  isNeedCaptureImage = isCaptureImg
  stillImageOutput = AVCaptureStillImageOutput()
 
@@ -104,6 +110,11 @@ open class LBXScanWrapper: NSObject,AVCaptureMetadataOutputObjectsDelegate {
  if session.canAddOutput(stillImageOutput) {
  session.addOutput(stillImageOutput)
  }
+
+ if session.canAddOutput(videoDataOutput) {
+ session.addOutput(videoDataOutput)
+ videoDataOutput.setSampleBufferDelegate(self, queue: DispatchQueue.main)
+ }
 
  stillImageOutput.outputSettings = [AVVideoCodecJPEG: AVVideoCodecKey]
 
@@ -147,6 +158,19 @@ open class LBXScanWrapper: NSObject,AVCaptureMetadataOutputObjectsDelegate {
  captureOutput(output, didOutputMetadataObjects: metadataObjects, from: connection)
  }
 
+ public func captureOutput(_ output: AVCaptureOutput, didOutput sampleBuffer: CMSampleBuffer, from connection: AVCaptureConnection) {
+
+ if let metadata = CMCopyDictionaryOfAttachments(allocator: nil, target: sampleBuffer, attachmentMode: kCMAttachmentMode_ShouldPropagate) as? [String: Any] {
+ let exifKey = kCGImagePropertyExifDictionary as String
+ if let exifMetadata = metadata[exifKey] as? [String: Any] {
+ let brightlessKey = kCGImagePropertyExifBrightnessValue as String
+ if let brightlessVal: Double = exifMetadata[brightlessKey] as? Double {
+ ambientLightValueClosure?(brightlessVal)
+ }
+ }
+ }
+ }
+
  func start() {
  if !session.isRunning {
  isNeedScanResult = true

swiftScan.xcodeproj/project.pbxproj

@@ -177,7 +177,7 @@
  TargetAttributes = {
  7D42B9AB1C05EE9A0084D045 = {
  CreatedOnToolsVersion = 7.1;
- DevelopmentTeam = 8LQ7CL73D8;
+ DevelopmentTeam = 9HV4B937SU;
  LastSwiftMigration = 0820;
  ProvisioningStyle = Automatic;
  };
@@ -378,11 +378,11 @@
  CODE_SIGN_IDENTITY = "iPhone Developer";
  "CODE_SIGN_IDENTITY[sdk=iphoneos*]" = "iPhone Developer";
  CODE_SIGN_STYLE = Automatic;
- DEVELOPMENT_TEAM = 8LQ7CL73D8;
+ DEVELOPMENT_TEAM = 9HV4B937SU;
  INFOPLIST_FILE = swiftScan/Info.plist;
  IPHONEOS_DEPLOYMENT_TARGET = 8.0;
  LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
- PRODUCT_BUNDLE_IDENTIFIER = com.lbx.hk2019235;
+ PRODUCT_BUNDLE_IDENTIFIER = com.zhouss.scan;
  PRODUCT_NAME = "$(TARGET_NAME)";
  PROVISIONING_PROFILE = "5afb03a3-32bd-412b-9db2-5fa2d3271415";
  PROVISIONING_PROFILE_SPECIFIER = "";

swiftScan/Assets.xcassets/AppIcon.appiconset/Contents.json

@@ -2,37 +2,52 @@
  "images" : [
  {
  "idiom" : "iphone",
- "size" : "29x29",
- "scale" : "2x"
+ "scale" : "2x",
+ "size" : "20x20"
  },
  {
  "idiom" : "iphone",
- "size" : "29x29",
- "scale" : "3x"
+ "scale" : "3x",
+ "size" : "20x20"
  },
  {
  "idiom" : "iphone",
- "size" : "40x40",
- "scale" : "2x"
+ "scale" : "2x",
+ "size" : "29x29"
  },
  {
  "idiom" : "iphone",
- "size" : "40x40",
- "scale" : "3x"
+ "scale" : "3x",
+ "size" : "29x29"
  },
  {
  "idiom" : "iphone",
- "size" : "60x60",
- "scale" : "2x"
+ "scale" : "2x",
+ "size" : "40x40"
  },
  {
  "idiom" : "iphone",
- "size" : "60x60",
- "scale" : "3x"
+ "scale" : "3x",
+ "size" : "40x40"
+ },
+ {
+ "idiom" : "iphone",
+ "scale" : "2x",
+ "size" : "60x60"
+ },
+ {
+ "idiom" : "iphone",
+ "scale" : "3x",
+ "size" : "60x60"
+ },
+ {
+ "idiom" : "ios-marketing",
+ "scale" : "1x",
+ "size" : "1024x1024"
  }
  ],
  "info" : {
- "version" : 1,
- "author" : "xcode"
+ "author" : "xcode",
+ "version" : 1
  }
-}
+}

swiftScan/Assets.xcassets/Contents.json

@@ -0,0 +1,6 @@
+{
+ "info" : {
+ "author" : "xcode",
+ "version" : 1
+ }
+}