582f536d
 yangbin
common:2022.1.28
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//
// LBXScanView.swift
// swiftScan
//
// Created by xialibing on 15/12/8.
// Copyright © 2015年 xialibing. All rights reserved.
//
import UIKit
open class LBXScanView: UIView {
// 扫码区域各种参数
var viewStyle = LBXScanViewStyle()
// 扫码区域
var scanRetangleRect = CGRect.zero
// 线条扫码动画封装
var scanLineAnimation: LBXScanLineAnimation?
// 网格扫码动画封装
var scanNetAnimation: LBXScanNetAnimation?
// 线条在中间位置，不移动
var scanLineStill: UIImageView?
// 启动相机时 菊花等待
var activityView: UIActivityIndicatorView?
// 启动相机中的提示文字
var labelReadying: UILabel?
// 记录动画状态
var isAnimationing = false
/**
初始化扫描界面
- parameter frame: 界面大小，一般为视频显示区域
- parameter vstyle: 界面效果参数
- returns: instancetype
*/
public init(frame: CGRect, vstyle: LBXScanViewStyle) {
viewStyle = vstyle
switch viewStyle.anmiationStyle {
case LBXScanViewAnimationStyle.LineMove:
scanLineAnimation = LBXScanLineAnimation.instance()
case LBXScanViewAnimationStyle.NetGrid:
scanNetAnimation = LBXScanNetAnimation.instance()
case LBXScanViewAnimationStyle.LineStill:
scanLineStill = UIImageView()
scanLineStill?.image = viewStyle.animationImage
default:
break
}
var frameTmp = frame
frameTmp.origin = CGPoint.zero
super.init(frame: frameTmp)
backgroundColor = UIColor.clear
}
override init(frame: CGRect) {
var frameTmp = frame
frameTmp.origin = CGPoint.zero
super.init(frame: frameTmp)
backgroundColor = UIColor.clear
}
public required init?(coder aDecoder: NSCoder) {
self.init()
}
deinit {
if scanLineAnimation != nil {
scanLineAnimation!.stopStepAnimating()
}
if scanNetAnimation != nil {
scanNetAnimation!.stopStepAnimating()
}
}
// 开始扫描动画
func startScanAnimation() {
guard !isAnimationing else {
return
}
isAnimationing = true
let cropRect = getScanRectForAnimation()
switch viewStyle.anmiationStyle {
case .LineMove:
scanLineAnimation?.startAnimatingWithRect(animationRect: cropRect,
parentView: self,
image: viewStyle.animationImage)
case .NetGrid:
scanNetAnimation?.startAnimatingWithRect(animationRect: cropRect,
parentView: self,
image: viewStyle.animationImage)
case .LineStill:
let stillRect = CGRect(x: cropRect.origin.x + 20,
y: cropRect.origin.y + cropRect.size.height / 2,
width: cropRect.size.width - 40,
height: 2)
scanLineStill?.frame = stillRect
addSubview(scanLineStill!)
scanLineStill?.isHidden = false
default: break
}
}
// 开始扫描动画
func stopScanAnimation() {
isAnimationing = false
switch viewStyle.anmiationStyle {
case .LineMove:
scanLineAnimation?.stopStepAnimating()
case .NetGrid:
scanNetAnimation?.stopStepAnimating()
case .LineStill:
scanLineStill?.isHidden = true
default: break
}
}
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
open override func draw(_ rect: CGRect) {
drawScanRect()
}
//MARK: ----- 绘制扫码效果-----
func drawScanRect() {
let XRetangleLeft = viewStyle.xScanRetangleOffset
var sizeRetangle = CGSize(width: frame.size.width - XRetangleLeft * 2.0, height: frame.size.width - XRetangleLeft * 2.0)
if viewStyle.whRatio != 1.0 {
let w = sizeRetangle.width
var h = w / viewStyle.whRatio
h = CGFloat(Int(h))
sizeRetangle = CGSize(width: w, height: h)
}
// 扫码区域Y轴最小坐标
let YMinRetangle = frame.size.height / 2.0 - sizeRetangle.height / 2.0 - viewStyle.centerUpOffset
let YMaxRetangle = YMinRetangle + sizeRetangle.height
let XRetangleRight = frame.size.width - XRetangleLeft
guard let context = UIGraphicsGetCurrentContext() else {
return
}
// 非扫码区域半透明
// 设置非识别区域颜色
context.setFillColor(viewStyle.color_NotRecoginitonArea.cgColor)
// 填充矩形
// 扫码区域上面填充
var rect = CGRect(x: 0, y: 0, width: frame.size.width, height: YMinRetangle)
context.fill(rect)
// 扫码区域左边填充
rect = CGRect(x: 0, y: YMinRetangle, width: XRetangleLeft, height: sizeRetangle.height)
context.fill(rect)
// 扫码区域右边填充
rect = CGRect(x: XRetangleRight, y: YMinRetangle, width: XRetangleLeft, height: sizeRetangle.height)
context.fill(rect)
// 扫码区域下面填充
rect = CGRect(x: 0, y: YMaxRetangle, width: frame.size.width, height: frame.size.height - YMaxRetangle)
context.fill(rect)
// 执行绘画
context.strokePath()
if viewStyle.isNeedShowRetangle {
// 中间画矩形(正方形)
context.setStrokeColor(viewStyle.colorRetangleLine.cgColor)
context.setLineWidth(1)
context.addRect(CGRect(x: XRetangleLeft, y: YMinRetangle, width: sizeRetangle.width, height: sizeRetangle.height))
// CGContextMoveToPoint(context, XRetangleLeft, YMinRetangle);
// CGContextAddLineToPoint(context, XRetangleLeft+sizeRetangle.width, YMinRetangle);
context.strokePath()
}
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
}
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()
}
// 根据矩形区域，获取识别区域
static func getScanRectWithPreView(preView: UIView, style: LBXScanViewStyle) -> CGRect {
let XRetangleLeft = style.xScanRetangleOffset
let width = preView.frame.size.width - XRetangleLeft * 2
let height = width
var sizeRetangle = CGSize(width: width, height: height)
if style.whRatio != 1 {
let w = sizeRetangle.width
var h = w / style.whRatio
let hInt: Int = Int(h)
h = CGFloat(hInt)
sizeRetangle = CGSize(width: w, height: h)
}
// 扫码区域Y轴最小坐标
let YMinRetangle = preView.frame.size.height / 2.0 - sizeRetangle.height / 2.0 - style.centerUpOffset
// 扫码区域坐标
let cropRect = CGRect(x: XRetangleLeft, y: YMinRetangle, width: sizeRetangle.width, height: sizeRetangle.height)
// 计算兴趣区域
var rectOfInterest: CGRect
// ref:http://www.cocoachina.com/ios/20141225/10763.html
let size = preView.bounds.size
let p1 = size.height / size.width
let p2: CGFloat = 1920.0 / 1080.0 // 使用了1080p的图像输出
if p1 < p2 {
let fixHeight = size.width * 1920.0 / 1080.0
let fixPadding = (fixHeight - size.height) / 2
rectOfInterest = CGRect(x: (cropRect.origin.y + fixPadding) / fixHeight,
y: cropRect.origin.x / size.width,
width: cropRect.size.height / fixHeight,
height: cropRect.size.width / size.width)
} else {
let fixWidth = size.height * 1080.0 / 1920.0
let fixPadding = (fixWidth - size.width) / 2
rectOfInterest = CGRect(x: cropRect.origin.y / size.height,
y: (cropRect.origin.x + fixPadding) / fixWidth,
width: cropRect.size.height / size.height,
height: cropRect.size.width / fixWidth)
}
return rectOfInterest
}
func getRetangeSize() -> CGSize {
let XRetangleLeft = viewStyle.xScanRetangleOffset
var sizeRetangle = CGSize(width: frame.size.width - XRetangleLeft * 2, height: frame.size.width - XRetangleLeft * 2)
let w = sizeRetangle.width
var h = w / viewStyle.whRatio
h = CGFloat(Int(h))
sizeRetangle = CGSize(width: w, height: h)
return sizeRetangle
}
func deviceStartReadying(readyStr: String) {
let XRetangleLeft = viewStyle.xScanRetangleOffset
let sizeRetangle = getRetangeSize()
// 扫码区域Y轴最小坐标
let YMinRetangle = frame.size.height / 2.0 - sizeRetangle.height / 2.0 - viewStyle.centerUpOffset
// 设备启动状态提示
if activityView == nil {
// activityView = UIActivityIndicatorView(frame: CGRect(x: 0, y: 0, width: 30, height: 30))
//
// activityView?.center = CGPoint(x: XRetangleLeft + sizeRetangle.width / 2 - 50, y: YMinRetangle + sizeRetangle.height / 2)
// activityView?.style = UIActivityIndicatorView.Style.whiteLarge
//
// addSubview(activityView!)
//
// let labelReadyRect = CGRect(x: activityView!.frame.origin.x + activityView!.frame.size.width + 10,
// y: activityView!.frame.origin.y,
// width: 100,
// height: 30)
// labelReadying = UILabel(frame: labelReadyRect)
// labelReadying?.text = readyStr
// labelReadying?.backgroundColor = UIColor.clear
// labelReadying?.textColor = UIColor.white
// labelReadying?.font = UIFont.systemFont(ofSize: 18.0)
// addSubview(labelReadying!)
}
// addSubview(labelReadying!)
// activityView?.startAnimating()
}
func deviceStopReadying() {
if activityView != nil {
activityView?.stopAnimating()
activityView?.removeFromSuperview()
labelReadying?.removeFromSuperview()
activityView = nil
labelReadying = nil
}
}
}
//MARK: - 公开方法
public extension LBXScanView {
/// 获取扫描动画的Rect
func getScanRectForAnimation() -> CGRect {
let XRetangleLeft = viewStyle.xScanRetangleOffset
var sizeRetangle = CGSize(width: frame.size.width - XRetangleLeft * 2,
height: frame.size.width - XRetangleLeft * 2)
if viewStyle.whRatio != 1 {
let w = sizeRetangle.width
let h = w / viewStyle.whRatio
sizeRetangle = CGSize(width: w, height: CGFloat(Int(h)))
}
// 扫码区域Y轴最小坐标
let YMinRetangle = frame.size.height / 2.0 - sizeRetangle.height / 2.0 - viewStyle.centerUpOffset
// 扫码区域坐标
let cropRect = CGRect(x: XRetangleLeft, y: YMinRetangle, width: sizeRetangle.width, height: sizeRetangle.height)
return cropRect
}
}
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