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
+  }
+}