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//
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// LBXScanView.m
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//
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//
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// Created by lbxia on 15/11/15.
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// Copyright © 2015年 lbxia. All rights reserved.
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//
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#import "LBXScanView.h"
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@interface LBXScanView()
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//扫码区域各种参数
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@property (nonatomic, strong) LBXScanViewStyle* viewStyle;
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//扫码区域
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@property (nonatomic,assign)CGRect scanRetangleRect;
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//线条扫码动画封装
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@property (nonatomic,strong)LBXScanLineAnimation *scanLineAnimation;
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//网格扫码动画封装
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@property (nonatomic,strong)LBXScanNetAnimation *scanNetAnimation;
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//线条在中间位置，不移动
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@property (nonatomic,strong)UIImageView *scanLineStill;
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/**
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@brief 启动相机时 菊花等待
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*/
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@property(nonatomic,strong)UIActivityIndicatorView* activityView;
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/**
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@brief 启动相机中的提示文字
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*/
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@property(nonatomic,strong)UILabel *labelReadying;
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@end
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@implementation LBXScanView
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-(id)initWithFrame:(CGRect)frame style:(LBXScanViewStyle*)style
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{
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if (self = [super initWithFrame:frame])
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{
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self.viewStyle = style;
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self.backgroundColor = [UIColor clearColor];
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}
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return self;
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}
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- (void)drawRect:(CGRect)rect
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{
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[self drawScanRect];
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}
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- (void)startDeviceReadyingWithText:(NSString*)text
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{
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int XRetangleLeft = _viewStyle.xScanRetangleOffset;
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CGSize sizeRetangle = CGSizeMake(self.frame.size.width - XRetangleLeft*2, self.frame.size.width - XRetangleLeft*2);
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if (!_viewStyle.isNeedShowRetangle) {
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CGFloat w = sizeRetangle.width;
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CGFloat h = w / _viewStyle.whRatio;
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NSInteger hInt = (NSInteger)h;
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h = hInt;
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sizeRetangle = CGSizeMake(w, h);
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}
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//扫码区域Y轴最小坐标
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CGFloat YMinRetangle = self.frame.size.height / 2.0 - sizeRetangle.height/2.0 - _viewStyle.centerUpOffset;
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//设备启动状态提示
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if (!_activityView)
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{
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self.activityView = [[UIActivityIndicatorView alloc]initWithFrame:CGRectMake(0, 0, 30, 30)];
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[_activityView setCenter:CGPointMake(XRetangleLeft + sizeRetangle.width/2 - 50, YMinRetangle + sizeRetangle.height/2)];
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[_activityView setActivityIndicatorViewStyle:UIActivityIndicatorViewStyleWhiteLarge];
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[self addSubview:_activityView];
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CGRect labelReadyRect = CGRectMake(_activityView.frame.origin.x + _activityView.frame.size.width + 10, _activityView.frame.origin.y, 100, 30);
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self.labelReadying = [[UILabel alloc]initWithFrame:labelReadyRect];
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_labelReadying.backgroundColor = [UIColor clearColor];
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_labelReadying.textColor = [UIColor whiteColor];
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_labelReadying.font = [UIFont systemFontOfSize:18.];
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_labelReadying.text = text;
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[self addSubview:_labelReadying];
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[_activityView startAnimating];
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}
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}
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- (void)stopDeviceReadying
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{
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if (_activityView) {
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[_activityView stopAnimating];
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[_activityView removeFromSuperview];
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[_labelReadying removeFromSuperview];
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self.activityView = nil;
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self.labelReadying = nil;
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}
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}
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/**
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* 开始扫描动画
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*/
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- (void)startScanAnimation
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{
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switch (_viewStyle.anmiationStyle)
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{
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case LBXScanViewAnimationStyle_LineMove:
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{
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//线动画
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if (!_scanLineAnimation)
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self.scanLineAnimation = [[LBXScanLineAnimation alloc]init];
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[_scanLineAnimation startAnimatingWithRect:_scanRetangleRect
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InView:self
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Image:_viewStyle.animationImage];
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}
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break;
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case LBXScanViewAnimationStyle_NetGrid:
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{
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//网格动画
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if (!_scanNetAnimation)
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self.scanNetAnimation = [[LBXScanNetAnimation alloc]init];
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[_scanNetAnimation startAnimatingWithRect:_scanRetangleRect
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InView:self
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Image:_viewStyle.animationImage];
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}
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break;
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case LBXScanViewAnimationStyle_LineStill:
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{
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if (!_scanLineStill) {
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CGRect stillRect = CGRectMake(_scanRetangleRect.origin.x+20,
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_scanRetangleRect.origin.y + _scanRetangleRect.size.height/2,
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_scanRetangleRect.size.width-40,
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2);
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_scanLineStill = [[UIImageView alloc]initWithFrame:stillRect];
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_scanLineStill.image = _viewStyle.animationImage;
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}
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[self addSubview:_scanLineStill];
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}
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default:
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break;
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}
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}
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/**
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* 结束扫描动画
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*/
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- (void)stopScanAnimation
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{
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if (_scanLineAnimation) {
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[_scanLineAnimation stopAnimating];
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}
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if (_scanNetAnimation) {
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[_scanNetAnimation stopAnimating];
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}
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if (_scanLineStill) {
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[_scanLineStill removeFromSuperview];
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}
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}
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- (void)drawScanRect
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{
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int XRetangleLeft = _viewStyle.xScanRetangleOffset;
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CGSize sizeRetangle = CGSizeMake(self.frame.size.width - XRetangleLeft*2, self.frame.size.width - XRetangleLeft*2);
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//if (!_viewStyle.isScanRetangelSquare)
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if (_viewStyle.whRatio != 1)
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{
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CGFloat w = sizeRetangle.width;
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CGFloat h = w / _viewStyle.whRatio;
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NSInteger hInt = (NSInteger)h;
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h = hInt;
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sizeRetangle = CGSizeMake(w, h);
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}
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//扫码区域Y轴最小坐标
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CGFloat YMinRetangle = self.frame.size.height / 2.0 - sizeRetangle.height/2.0 - _viewStyle.centerUpOffset;
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CGFloat YMaxRetangle = YMinRetangle + sizeRetangle.height;
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CGFloat XRetangleRight = self.frame.size.width - XRetangleLeft;
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NSLog(@"frame:%@",NSStringFromCGRect(self.frame));
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CGContextRef context = UIGraphicsGetCurrentContext();
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//非扫码区域半透明
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{
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//设置非识别区域颜色
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CGContextSetRGBFillColor(context, _viewStyle.red_notRecoginitonArea, _viewStyle.green_notRecoginitonArea,
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_viewStyle.blue_notRecoginitonArea, _viewStyle.alpa_notRecoginitonArea);
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//填充矩形
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//扫码区域上面填充
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CGRect rect = CGRectMake(0, 0, self.frame.size.width, YMinRetangle);
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CGContextFillRect(context, rect);
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//扫码区域左边填充
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rect = CGRectMake(0, YMinRetangle, XRetangleLeft,sizeRetangle.height);
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CGContextFillRect(context, rect);
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//扫码区域右边填充
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rect = CGRectMake(XRetangleRight, YMinRetangle, XRetangleLeft,sizeRetangle.height);
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CGContextFillRect(context, rect);
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//扫码区域下面填充
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rect = CGRectMake(0, YMaxRetangle, self.frame.size.width,self.frame.size.height - YMaxRetangle);
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CGContextFillRect(context, rect);
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//执行绘画
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CGContextStrokePath(context);
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}
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if (_viewStyle.isNeedShowRetangle)
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{
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//中间画矩形(正方形)
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CGContextSetStrokeColorWithColor(context, _viewStyle.colorRetangleLine.CGColor);
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CGContextSetLineWidth(context, 1);
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CGContextAddRect(context, CGRectMake(XRetangleLeft, YMinRetangle, sizeRetangle.width, sizeRetangle.height));
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//CGContextMoveToPoint(context, XRetangleLeft, YMinRetangle);
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//CGContextAddLineToPoint(context, XRetangleLeft+sizeRetangle.width, YMinRetangle);
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CGContextStrokePath(context);
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}
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_scanRetangleRect = CGRectMake(XRetangleLeft, YMinRetangle, sizeRetangle.width, sizeRetangle.height);
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//画矩形框4格外围相框角
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//相框角的宽度和高度
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int wAngle = _viewStyle.photoframeAngleW;
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int hAngle = _viewStyle.photoframeAngleH;
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//4个角的 线的宽度
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CGFloat linewidthAngle = _viewStyle.photoframeLineW;// 经验参数：6和4
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//画扫码矩形以及周边半透明黑色坐标参数
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CGFloat diffAngle = 0.0f;
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//diffAngle = linewidthAngle / 2; //框外面4个角，与框有缝隙
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//diffAngle = linewidthAngle/2; //框4个角 在线上加4个角效果
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//diffAngle = 0;//与矩形框重合
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switch (_viewStyle.photoframeAngleStyle)
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{
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case LBXScanViewPhotoframeAngleStyle_Outer:
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{
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diffAngle = linewidthAngle/3;//框外面4个角，与框紧密联系在一起
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}
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break;
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case LBXScanViewPhotoframeAngleStyle_On:
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{
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diffAngle = 0;
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}
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break;
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case LBXScanViewPhotoframeAngleStyle_Inner:
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{
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diffAngle = -_viewStyle.photoframeLineW/2;
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}
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break;
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default:
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{
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diffAngle = linewidthAngle/3;
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}
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break;
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}
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CGContextSetStrokeColorWithColor(context, _viewStyle.colorAngle.CGColor);
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CGContextSetRGBFillColor(context, 1.0, 1.0, 1.0, 1.0);
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// Draw them with a 2.0 stroke width so they are a bit more visible.
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CGContextSetLineWidth(context, linewidthAngle);
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//
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CGFloat leftX = XRetangleLeft - diffAngle;
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CGFloat topY = YMinRetangle - diffAngle;
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CGFloat rightX = XRetangleRight + diffAngle;
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CGFloat bottomY = YMaxRetangle + diffAngle;
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//左上角水平线
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CGContextMoveToPoint(context, leftX-linewidthAngle/2, topY);
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CGContextAddLineToPoint(context, leftX + wAngle, topY);
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//左上角垂直线
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CGContextMoveToPoint(context, leftX, topY-linewidthAngle/2);
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CGContextAddLineToPoint(context, leftX, topY+hAngle);
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//左下角水平线
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CGContextMoveToPoint(context, leftX-linewidthAngle/2, bottomY);
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CGContextAddLineToPoint(context, leftX + wAngle, bottomY);
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//左下角垂直线
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CGContextMoveToPoint(context, leftX, bottomY+linewidthAngle/2);
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CGContextAddLineToPoint(context, leftX, bottomY - hAngle);
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//右上角水平线
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CGContextMoveToPoint(context, rightX+linewidthAngle/2, topY);
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CGContextAddLineToPoint(context, rightX - wAngle, topY);
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//右上角垂直线
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CGContextMoveToPoint(context, rightX, topY-linewidthAngle/2);
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CGContextAddLineToPoint(context, rightX, topY + hAngle);
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//右下角水平线
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CGContextMoveToPoint(context, rightX+linewidthAngle/2, bottomY);
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CGContextAddLineToPoint(context, rightX - wAngle, bottomY);
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//右下角垂直线
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CGContextMoveToPoint(context, rightX, bottomY+linewidthAngle/2);
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CGContextAddLineToPoint(context, rightX, bottomY - hAngle);
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CGContextStrokePath(context);
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}
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//根据矩形区域，获取识别区域
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+ (CGRect)getScanRectWithPreView:(UIView*)view style:(LBXScanViewStyle*)style
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{
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int XRetangleLeft = style.xScanRetangleOffset;
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CGSize sizeRetangle = CGSizeMake(view.frame.size.width - XRetangleLeft*2, view.frame.size.width - XRetangleLeft*2);
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if (style.whRatio != 1)
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{
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CGFloat w = sizeRetangle.width;
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CGFloat h = w / style.whRatio;
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NSInteger hInt = (NSInteger)h;
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h = hInt;
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sizeRetangle = CGSizeMake(w, h);
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}
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//扫码区域Y轴最小坐标
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CGFloat YMinRetangle = view.frame.size.height / 2.0 - sizeRetangle.height/2.0 - style.centerUpOffset;
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//扫码区域坐标
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CGRect cropRect = CGRectMake(XRetangleLeft, YMinRetangle, sizeRetangle.width, sizeRetangle.height);
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//计算兴趣区域
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CGRect rectOfInterest;
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//ref:http://www.cocoachina.com/ios/20141225/10763.html
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CGSize size = view.bounds.size;
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CGFloat p1 = size.height/size.width;
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CGFloat p2 = 1920./1080.; //使用了1080p的图像输出
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if (p1 < p2) {
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CGFloat fixHeight = size.width * 1920. / 1080.;
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CGFloat fixPadding = (fixHeight - size.height)/2;
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rectOfInterest = CGRectMake((cropRect.origin.y + fixPadding)/fixHeight,
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cropRect.origin.x/size.width,
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cropRect.size.height/fixHeight,
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cropRect.size.width/size.width);
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} else {
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CGFloat fixWidth = size.height * 1080. / 1920.;
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CGFloat fixPadding = (fixWidth - size.width)/2;
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rectOfInterest = CGRectMake(cropRect.origin.y/size.height,
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(cropRect.origin.x + fixPadding)/fixWidth,
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cropRect.size.height/size.height,
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cropRect.size.width/fixWidth);
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}
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return rectOfInterest;
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}
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@end
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