//
//  IOS7EndViewController.h
//  NewProject
//
//  Created by
//  Copyright (c) 2013年 Steven. All rights reserved.
//

#import "ScanViewController.h"
#define Screen_Width  [[UIScreen mainScreen] bounds].size.width
#if TARGET_IPHONE_SIMULATOR
#define SIMULATOR 1
#elif TARGET_OS_IPHONE
#define SIMULATOR 0
#endif

@interface ScanViewController (){
    UIView *bgView;
}

@end

@implementation ScanViewController
#pragma mark - 公共事件
/**
 初始化

 @param nibNameOrNil <#nibNameOrNil description#>
 @param nibBundleOrNil <#nibBundleOrNil description#>
 @return <#return value description#>
 */
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}

/**
 viewWillAppear

 @param animated <#animated description#>
 */
- (void)viewWillAppear:(BOOL)animated
{
      [super viewWillAppear:animated];
      self.extendedLayoutIncludesOpaqueBars = YES;
    if(!SIMULATOR){
        [self setupCamera];
    }
}

/**
 viewDidLoad
 */
- (void)viewDidLoad
{
    [super viewDidLoad];
    self.view.backgroundColor = [UIColor grayColor];
    UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
     [button setImage:[UIImage imageNamed:@"icon_back"] forState:UIControlStateNormal];
    [button addTarget:self action:@selector(GotoBack)
     forControlEvents:UIControlEventTouchUpInside];
    button.frame = CGRectMake(0, 0,45,22);
    
    UIBarButtonItem *menuButton = [[UIBarButtonItem alloc] initWithCustomView:button];
    self.navigationItem.leftBarButtonItem = menuButton;
    //self.view.alpha=0.5;
    bgView = [UIView new];
    bgView.frame=CGRectMake(Screen_Width/2-300/2, Screen_Height2/2-400/2, 300, 410);
    [self.view addSubview:bgView];
    bgView.backgroundColor = [UIColor clearColor];
    
	UIButton * scanButton = [UIButton buttonWithType:UIButtonTypeCustom];
    scanButton.backgroundColor = [UIColor colorWithRed:205/255.0 green:1/255.0 blue:15/255.0 alpha:1.0];
    [scanButton setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
    [scanButton setTitle:@"取消" forState:UIControlStateNormal];
    scanButton.frame = CGRectMake(10, 370, 280, 40);
    [scanButton addTarget:self action:@selector(backAction) forControlEvents:UIControlEventTouchUpInside];
    [bgView addSubview:scanButton];
    
    UILabel * labIntroudction= [[UILabel alloc] initWithFrame:CGRectMake(15, 15, 290, 50)];
    labIntroudction.backgroundColor = [UIColor clearColor];
    labIntroudction.numberOfLines=2;
    labIntroudction.textColor = [UIColor whiteColor];
    labIntroudction.text = @"请将扫描的条码至于下面的框内！";
    [bgView addSubview:labIntroudction];
    
    UIImageView * imageView = [[UIImageView alloc]initWithFrame:CGRectMake(0, 65, 300, 300)];
    imageView.image = [UIImage imageNamed:@"pick_bg"];
    [bgView addSubview:imageView];
    
    upOrdown = NO;
    num =0;
    _line = [[UIImageView alloc] initWithFrame:CGRectMake(50, 75, 220, 2)];
    _line.image = [UIImage imageNamed:@"line.png"];
    [bgView addSubview:_line];
    
    timer = [NSTimer scheduledTimerWithTimeInterval:.02 target:self selector:@selector(animation) userInfo:nil repeats:YES];
}

/**
 didReceiveMemoryWarning
 */
- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

- (void)GotoBack{
    [self.navigationController popViewControllerAnimated:YES];
}

#pragma mark - 事件

/**
 旋转
 */
- (void)animation
{
    if (upOrdown == NO) {
        num ++;
       // _line.frame = CGRectMake(50, 110+2*num, 220, 2);
       _line.frame = CGRectMake(50, 60+2*num, 220, 2);
        if (2*num == 280) {
            upOrdown = YES;
        }
    }
    else {
        num --;
        _line.frame = CGRectMake(50, 60+2*num, 220, 2);
        if (num == 0) {
            upOrdown = NO;
        }
    }

}

/**
 返回
 */
- (void)backAction
{
    [self.navigationController popViewControllerAnimated:YES];
}

/**
 打开摄像头
 */
- (void)setupCamera
{
    // Device
    _device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
    // Input
    _input = [AVCaptureDeviceInput deviceInputWithDevice:self.device error:nil];
    // Output
    _output = [[AVCaptureMetadataOutput alloc]init];
    [_output setMetadataObjectsDelegate:self queue:dispatch_get_main_queue()];
    // Session
    _session = [[AVCaptureSession alloc]init];
    [_session setSessionPreset:AVCaptureSessionPresetHigh];
    
    if ([_session canAddInput:self.input])
    {
        [_session addInput:self.input];
    }
    
    if ([_session canAddOutput:self.output])
    {
        [_session addOutput:self.output];
    }
    
    // 条码类型 AVMetadataObjectTypeQRCode
    _output.metadataObjectTypes =@[AVMetadataObjectTypeUPCECode,  AVMetadataObjectTypeCode39Code,
                                   AVMetadataObjectTypeCode39Mod43Code, AVMetadataObjectTypeEAN13Code,
                                   AVMetadataObjectTypeEAN8Code, AVMetadataObjectTypeCode93Code,
                                   AVMetadataObjectTypeCode128Code, AVMetadataObjectTypePDF417Code,
                                   AVMetadataObjectTypeQRCode, AVMetadataObjectTypeAztecCode,AVMetadataObjectTypeDataMatrixCode];
    
    // Preview
    _preview  = [AVCaptureVideoPreviewLayer layerWithSession:self.session];
    _preview.videoGravity = AVLayerVideoGravityResizeAspectFill;
    _preview.frame =CGRectMake(10,60,280,280);
    [bgView.layer insertSublayer:self.preview atIndex:0];
    

    
    // Start
    [_session startRunning];
}

#pragma mark - AVCaptureMetadataOutputObjectsDelegate
- (void)captureOutput:(AVCaptureOutput *)captureOutput didOutputMetadataObjects:(NSArray *)metadataObjects fromConnection:(AVCaptureConnection *)connection
{
   
    NSString *stringValue;
    
    if ([metadataObjects count] >0)
    {
        AVMetadataMachineReadableCodeObject * metadataObject = [metadataObjects objectAtIndex:0];
        stringValue = metadataObject.stringValue;
    }
    
    [_session stopRunning];
  
      [self.navigationController popViewControllerAnimated:YES];
    if ([self.rootVC respondsToSelector:@selector(reloadDataWithOnlyCode:)]) {
         self.navigationController.navigationBar.translucent=NO;
                   [self.rootVC reloadDataWithOnlyCode:stringValue];
                }
}


@end