//
// FoolCameraViewController.m
// TanTou
//
// Created by 王文志 on 2017/10/19.
// Copyright © 2017年 bailing. All rights reserved.
// 拍照页
#import "FoolCameraViewController.h"
#import <AVFoundation/AVFoundation.h>
#import "HealthScoreViewController.h"
@interface FoolCameraViewController ()
/**
* session：由他把输入输出结合在一起，并开始启动捕获设备（摄像头）
* AVCaptureSession对象来执行输入设备和输出设备之间的数据传递
*/
@property (strong, nonatomic) AVCaptureSession *session;
/**
* 捕获设备，通常是前置摄像头，后置摄像头，麦克风（音频输入）
*/
@property (weak, nonatomic) AVCaptureDevice *device;
/**
* AVCaptureDeviceInput 代表输入设备，他使用AVCaptureDevice 来初始化
*/
@property (weak, nonatomic) AVCaptureDeviceInput *input;
/**
* 照片输出流
*/
@property (weak, nonatomic) AVCaptureStillImageOutput *imageOutput;
/**
* 图像预览层，实时显示捕获的图像
*/
@property (weak, nonatomic) AVCaptureVideoPreviewLayer *previewLayer;
/**containView*/
@property (weak, nonatomic) UIView *containView;
//网格ImageView
@property (weak, nonatomic) UIImageView *gridImageView;
//网格按钮
@property (weak, nonatomic) UIButton *gridButton;
//闪光按钮
@property (weak, nonatomic) UIButton *flashButton;
//聚焦View
@property (weak, nonatomic) UIView *focusView;
/**buttomView*/
@property (weak, nonatomic) UIView *buttomView;
//相机按钮
@property (weak, nonatomic) UIButton *photoButton;
/**屏幕宽度*/
@property (assign, nonatomic) CGFloat screenwidth;
//闪光开关
@property (assign, nonatomic) BOOL isflashOn;
//网格开关
@property (assign, nonatomic) BOOL isgridOn;
//网格ImageView显示隐藏开关
@property (assign, nonatomic) BOOL isgridImageViewHidden;
//照片
@property (strong, nonatomic) UIImage *photoImage;
@end
@implementation FoolCameraViewController
#pragma mark - 懒加载
- (AVCaptureSession *)session {
if (!_session) {
// 创建Device,使用AVMediaTypeVideo 指明self.device代表视频，默认使用后置摄像头进行初始化
AVCaptureDevice *device = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
self.device = device;
if ([device lockForConfiguration:nil]) {// 配置相机设备,更改这个设置的时候必须先锁定设备，修改完后再解锁，否则崩溃
if ([device isFlashModeSupported:AVCaptureFlashModeAuto]) { // 设置闪光灯为自动
[device setFlashMode:AVCaptureFlashModeAuto];
}
if ([device isWhiteBalanceModeSupported:AVCaptureWhiteBalanceModeAutoWhiteBalance]) { //设置白平衡
[device setWhiteBalanceMode:AVCaptureWhiteBalanceModeAutoWhiteBalance];
}
[device unlockForConfiguration];
}
// 创建input,使用设备初始化输入
NSError *error = nil;
AVCaptureDeviceInput *input = [[AVCaptureDeviceInput alloc] initWithDevice:device error:&error];
self.input = input;
if (error) {
NSLog(@"error:%@",error);
return nil;
}
// 创建imageOutput
AVCaptureStillImageOutput *imageOutput = [[AVCaptureStillImageOutput alloc] init];
self.imageOutput = imageOutput;
// 输出设置,输出jpeg格式图片
NSDictionary *outputSettings = [[NSDictionary alloc] initWithObjectsAndKeys:AVVideoCodecJPEG, AVVideoCodecKey, nil];
[imageOutput setOutputSettings:outputSettings];
//生成会话，用来结合输入输出
_session = [[AVCaptureSession alloc] init];
// 设置分辨率
if ([_session canSetSessionPreset:AVCaptureSessionPresetPhoto]) {
_session.sessionPreset = AVCaptureSessionPresetPhoto;
}
// 添加输入设备
if ([_session canAddInput:input]) {
[_session addInput:input];
}
// 添加输出设备
if ([_session canAddOutput:imageOutput]) {
[_session addOutput:imageOutput];
}
}
return _session;
}
- (AVCaptureVideoPreviewLayer *)previewLayer {
if (!_previewLayer) {
// 初始化预览层，session负责驱动input进行信息的采集，layer负责把图像渲染显示
AVCaptureVideoPreviewLayer *previewLayer = [[AVCaptureVideoPreviewLayer alloc] initWithSession:self.session];
[self.containView.layer addSublayer:previewLayer];
self.containView.layer.masksToBounds = YES;
_previewLayer = previewLayer;
previewLayer.videoGravity = AVLayerVideoGravityResizeAspectFill;
// 到这里所有的初始化工作基本完成，运行程序可以看到镜头捕捉到得画面。接下来需要实现拍照按钮
}
return _previewLayer;
}
- (UIView *)containView {
if (!_containView) {
UIView *containView = [[UIView alloc] init];
[self.view addSubview:containView];
_containView = containView;
CGFloat screenwidth = self.screenwidth;
containView.size = CGSizeMake(screenwidth, screenwidth + ZXSRealValueFit6SWidthPt(125));
// 预览层
self.previewLayer.frame = CGRectMake(0, 0, screenwidth, screenwidth);
//显示网格线ImageView
UIImageView *gridImageView = [[UIImageView alloc] init];
[containView addSubview:gridImageView];
_gridImageView = gridImageView;
gridImageView.image = [UIImage imageNamed:@"xian"];
gridImageView.frame = self.previewLayer.frame;
gridImageView.contentMode = UIViewContentModeScaleAspectFill;
gridImageView.hidden = YES;
gridImageView.userInteractionEnabled = YES;
//网格按钮
UIButton *gridButton = [UIButton buttonWithType:UIButtonTypeCustom];
[containView addSubview:gridButton];
_gridButton = gridButton;
[gridButton setImage:[UIImage imageNamed:@"jingxian"] forState:UIControlStateNormal];
[gridButton setImage:[UIImage imageNamed:@"jingxianz"] forState:UIControlStateSelected];
CGFloat gridButtonWidth = ZXSRealValueFit6SWidthPt(44);
CGFloat gridButtonY = screenwidth + ZXSRealValueFit6SWidthPt(81) * 0.5;
gridButton.frame = CGRectMake(screenwidth * 0.5 - ZXSRealValueFit6SWidthPt(134), gridButtonY, gridButtonWidth, gridButtonWidth);
[gridButton addTarget:self action:@selector(gridButtonDidClick:) forControlEvents:UIControlEventTouchUpInside];
//闪光按钮
UIButton *flashButton = [UIButton buttonWithType:UIButtonTypeCustom];
[containView addSubview:flashButton];
_flashButton = flashButton;
[flashButton setImage:[UIImage imageNamed:@"shanguang"] forState:UIControlStateNormal];
[flashButton setImage:[UIImage imageNamed:@"shanguangz"] forState:UIControlStateSelected];
flashButton.frame = CGRectMake(screenwidth * 0.5 + ZXSRealValueFit6SWidthPt(90), gridButtonY, gridButtonWidth, gridButtonWidth);
[flashButton addTarget:self action:@selector(flashButtonDidClick:) forControlEvents:UIControlEventTouchUpInside];
//点击时候的时候显示的正方形
UIView *tempTapView = [[UIView alloc] init];
[containView addSubview:tempTapView];
tempTapView.frame = CGRectMake(0, 0, self.screenwidth, self.screenwidth);
tempTapView.backgroundColor = [UIColor clearColor];
UIView *focusView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, ZXSRealValueFit6SWidthPt(160), ZXSRealValueFit6SWidthPt(160))];
[tempTapView addSubview:focusView];
_focusView = focusView;
focusView.layer.borderWidth = 1.0;
focusView.layer.borderColor = [UIColor whiteColor].CGColor;
focusView.backgroundColor = [UIColor clearColor];
focusView.hidden = YES;
//添加点击手势
UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(focusGesture:)];
[tempTapView addGestureRecognizer:tapGesture];
}
return _containView;
}
- (UIView *)buttomView {
if (!_buttomView) {
UIView *buttomView = [[UIView alloc] init];
[self.view addSubview:buttomView];
_buttomView = buttomView;
buttomView.bounds = CGRectMake(0, 0, self.screenwidth, ZXSSCREEN_HEIGHT - CGRectGetMaxY(self.containView.frame));
buttomView.backgroundColor = [UIColor colorWithRed:244 / 255.0 green:244 / 255.0 blue:244 / 255.0 alpha:1];
// 添加拍照按钮
UIButton *photoButton = [UIButton buttonWithType:UIButtonTypeCustom];
[_buttomView addSubview:photoButton];
_photoButton = photoButton;
[photoButton setImage:[UIImage imageNamed:@"anjian"] forState:UIControlStateNormal];
[photoButton setImage:[UIImage imageNamed:@"anjianz"] forState:UIControlStateHighlighted];
[photoButton addTarget:self action:@selector(shutterCamera) forControlEvents:UIControlEventTouchUpInside];//拍照按钮
photoButton.bounds = CGRectMake(0, 0, ZXSRealValueFit6SWidthPt(240), ZXSRealValueFit6SWidthPt(240));
photoButton.center = CGPointMake(self.screenwidth * 0.5, buttomView.height * 0.5);
}
return _buttomView;
}
#pragma mark - 系统方法
- (void)viewDidLoad {
[super viewDidLoad];
[self setupNavigationBar];
[self setupUI];
}
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
if (self.session) {
[self.session startRunning];
}
}
- (void)viewDidDisappear:(BOOL)animated {
[super viewDidDisappear:animated];
if (self.session) {
[self.session stopRunning];
}
}
#pragma mark - 自定义方法
- (void)setupNavigationBar {
self.title = @"拍照";
self.navigationController.navigationBar.hidden = NO;
[self.navigationController.navigationBar setTitleTextAttributes:@{NSFontAttributeName:[UIFont systemFontOfSize:20],NSForegroundColorAttributeName:[UIColor colorWithRed:68 / 255.0 green:68 / 255.0 blue:68 / 255.0 alpha:1.0]}];
self.navigationController.navigationBar.backgroundColor = [UIColor whiteColor];
self.navigationItem.leftBarButtonItem = [UIBarButtonItem zxs_barButtonItemWithHighlightedStatusWithImage:[UIImage imageNamed:@"fanhuihei"] highlightedImage:nil target:self action:@selector(backBarButtonItemDidClick)];
}
- (void)setupUI {
self.screenwidth = ZXSSCREEN_WIDTH;
self.view.backgroundColor = [UIColor whiteColor];
self.containView.origin = CGPointMake(0, 44);
self.buttomView.origin = CGPointMake(0, CGRectGetMaxY(self.containView.frame));
// 获取闪光按钮和网格按钮默认设置值，并且设置闪光按钮和网格按钮
[self setupGridButtonAndFlashButton];
}
// 获取闪光按钮和网格按钮默认设置值，并且设置闪光按钮和网格按钮
- (void)setupGridButtonAndFlashButton {
// 获取网格按钮默认设置值，并且设置网格按钮
self.isgridOn = [[NSUserDefaults standardUserDefaults] boolForKey:@"isgridOn"];
if (self.isgridOn) {
self.gridImageView.hidden = NO;
self.gridButton.selected = YES;
self.isgridImageViewHidden = NO;
}else {
self.gridImageView.hidden = YES;
self.gridButton.selected = NO;
self.isgridImageViewHidden = YES;
}
// 获取闪光按钮默认设置值，并且设置闪光按钮
self.isflashOn = [[NSUserDefaults standardUserDefaults] boolForKey:@"isflashOn"];
if ([self.device lockForConfiguration:nil]) {
if (self.isflashOn) {
if ([self.device isFlashModeSupported:AVCaptureFlashModeOn]) {
[self.device setFlashMode:AVCaptureFlashModeOn];
self.flashButton.selected = YES;
}
} else {
if ([self.device isFlashModeSupported:AVCaptureFlashModeOff]) {
[self.device setFlashMode:AVCaptureFlashModeOff];
self.flashButton.selected = NO;
}
}
[self.device unlockForConfiguration];
}
}
#pragma mark - 触发事件
- (void)backBarButtonItemDidClick {
[self.navigationController popViewControllerAnimated:YES];
}
- (void)cancelBarButtonItemDidClick {
//设置拍照、闪光按钮和网格按钮能点击
self.view.userInteractionEnabled = YES;
//设置导航栏leftBarButtonItem
self.navigationItem.leftBarButtonItem = [UIBarButtonItem zxs_barButtonItemWithHighlightedStatusWithImage:[UIImage imageNamed:@"fanhuihei"] highlightedImage:nil target:self action:@selector(backBarButtonItemDidClick)];
//设置导航栏rightBarButtonItem
self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] init];
//设置将存储照片的imageView里面的照片移除
self.gridImageView.image = [UIImage imageNamed:@"xian"];
if (self.isgridImageViewHidden) {
self.gridImageView.hidden = YES;
} else {
self.gridImageView.hidden = NO;
}
}
- (void)completeBarButtonItemDidClick {
// 设置拍照、闪光按钮和网格按钮能点击
self.view.userInteractionEnabled = YES;
// 保存图片
[self saveImageToPhotoAlbum:self.photoImage];
HealthScoreViewController *healthScoreViewController = [[HealthScoreViewController alloc] init];
healthScoreViewController.photoImage = self.photoImage;
[self.navigationController pushViewController:healthScoreViewController animated:YES];
}
//网格线打开与关闭
- (void)gridButtonDidClick:(UIButton *)button {
if (self.isgridOn) {
self.isgridOn = NO;
[[NSUserDefaults standardUserDefaults] setBool:NO forKey:@"isgridOn"];
[[NSUserDefaults standardUserDefaults] synchronize];
button.selected = NO;
self.gridImageView.hidden = YES;
self.isgridImageViewHidden = YES;
} else {
self.isgridOn = YES;
[[NSUserDefaults standardUserDefaults] setBool:YES forKey:@"isgridOn"];
[[NSUserDefaults standardUserDefaults] synchronize];
button.selected = YES;
self.gridImageView.hidden = NO;
self.isgridImageViewHidden = NO;
}
}
//闪光灯打开与关闭
- (void)flashButtonDidClick:(UIButton *)button {
if ([_device lockForConfiguration:nil]) {
if (_isflashOn) {
if ([_device isFlashModeSupported:AVCaptureFlashModeOff]) {
[_device setFlashMode:AVCaptureFlashModeOff];
_isflashOn = NO;
[[NSUserDefaults standardUserDefaults] setBool:NO forKey:@"isflashOn"];
[[NSUserDefaults standardUserDefaults] synchronize];
button.selected = NO;
}
} else {
if ([_device isFlashModeSupported:AVCaptureFlashModeOn]) {
[_device setFlashMode:AVCaptureFlashModeOn];
_isflashOn = YES;
[[NSUserDefaults standardUserDefaults] setBool:YES forKey:@"isflashOn"];
[[NSUserDefaults standardUserDefaults] synchronize];
button.selected = YES;
}
}
[_device unlockForConfiguration];
}
}
//点击的时候出现黄色的小正方形
- (void)focusGesture:(UITapGestureRecognizer*)gesture {
CGPoint point = [gesture locationInView:gesture.view];
NSLog(@"NSStringFromCGPoint%@",NSStringFromCGPoint(point));
// 设置正方形只能在画面区域显示
NSInteger maxPointY = 44 + self.screenwidth;
NSInteger minPointY = 44;
if (point.y > minPointY && point.y < maxPointY) {
[self focusAtPoint:point];
}
}
- (void)focusAtPoint:(CGPoint)point {
CGSize size = self.gridImageView.size;
CGPoint focusPoint = CGPointMake(point.y / size.height ,1 - point.x / size.width);
NSError *error;
if ([self.device lockForConfiguration:&error]) {
if ([self.device isFocusModeSupported:AVCaptureFocusModeAutoFocus]) {
[self.device setFocusPointOfInterest:focusPoint];
[self.device setFocusMode:AVCaptureFocusModeAutoFocus];
}
if ([self.device isExposureModeSupported:AVCaptureExposureModeAutoExpose]) {
[self.device setExposurePointOfInterest:focusPoint];
[self.device setExposureMode:AVCaptureExposureModeAutoExpose];
}
[self.device unlockForConfiguration];
_focusView.center = point;
_focusView.hidden = NO;
[UIView animateWithDuration:0.3 animations:^{
_focusView.transform = CGAffineTransformMakeScale(1.25, 1.25);
}completion:^(BOOL finished) {
[UIView animateWithDuration:0.5 animations:^{
_focusView.transform = CGAffineTransformIdentity;
} completion:^(BOOL finished) {
_focusView.hidden = YES;
}];
}];
}
}
- (void)shutterCamera {
self.view.userInteractionEnabled = NO;
//session通过AVCaptureConnection连接AVCaptureStillimageOutPut进行图片输出
AVCaptureConnection *videoConnection = [self.imageOutput connectionWithMediaType:AVMediaTypeVideo];
if (!videoConnection) {
NSLog(@"take photo failed!");
return;
}
// 捕捉静态图片
[self.imageOutput captureStillImageAsynchronouslyFromConnection:videoConnection completionHandler:^(CMSampleBufferRef imageDataSampleBuffer, NSError *error) {
if (imageDataSampleBuffer == NULL) {
return;
}
UIImage *tempImage = [UIImage imageWithData:[AVCaptureStillImageOutput jpegStillImageNSDataRepresentation:imageDataSampleBuffer]];
NSLog(@"tempImage%@",NSStringFromCGSize(tempImage.size));
UIImage *squareImage = [self squareImageFromImage:tempImage scaledToSize:self.screenwidth];
self.photoImage = squareImage;
self.gridImageView.image = squareImage;
if (self.gridImageView.hidden) {
self.isgridImageViewHidden = YES; //记录先前是否隐藏
self.gridImageView.hidden = NO;
} else {
self.isgridImageViewHidden = NO;
}
// 设置导航栏
self.navigationItem.leftBarButtonItem = [UIBarButtonItem zxs_barButtonItemWithColor:[UIColor colorWithRed:24 / 255.0 green:162 / 255.0 blue:162 / 255.0 alpha:1.0] font:nil target:self action:@selector(cancelBarButtonItemDidClick) title:@"取消"];
self.navigationItem.rightBarButtonItem = [UIBarButtonItem zxs_barButtonItemWithColor:[UIColor colorWithRed:24 / 255.0 green:162 / 255.0 blue:162 / 255.0 alpha:1.0] font:nil target:self action:@selector(completeBarButtonItemDidClick) title:@"完成"];
}];
}
/**
* 剪切图片为正方形
* @param image 原始图片比如size大小为(400x200)pixels
* @param newSize 正方形的size比如400pixels
* @return 返回正方形图片(400x400)pixels
*/
- (UIImage *)squareImageFromImage:(UIImage *)image scaledToSize:(CGFloat)newSize {
CGAffineTransform scaleTransform;
CGPoint origin;
if (image.size.width > image.size.height) {
//image原始高度为200，缩放image的高度为400pixels，所以缩放比率为2
CGFloat scaleRatio = newSize / image.size.height;
scaleTransform = CGAffineTransformMakeScale(scaleRatio, scaleRatio);
//设置绘制原始图片的画笔坐标为CGPoint(-100, 0)pixels
origin = CGPointMake(- (image.size.width - image.size.height) / 2.0f, 0);
} else {
CGFloat scaleRatio = newSize / image.size.width;
scaleTransform = CGAffineTransformMakeScale(scaleRatio, scaleRatio);
origin = CGPointMake(0, - (image.size.height - image.size.width) / 2.0f);
}
CGSize size = CGSizeMake(newSize, newSize);
//创建画板为(400x400)pixels
if ([[UIScreen mainScreen] respondsToSelector:@selector(scale)]) {
UIGraphicsBeginImageContextWithOptions(size, YES, 0);
} else {
UIGraphicsBeginImageContext(size);
}
CGContextRef context = UIGraphicsGetCurrentContext();
//将image原始图片(400x200)pixels缩放为(800x400)pixels
CGContextConcatCTM(context, scaleTransform);
//origin也会从原始(-100, 0)缩放到(-200, 0)
[image drawAtPoint:origin];
//获取缩放后剪切的image图片
image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return image;
}
#pragma - 保存至相册
- (void)saveImageToPhotoAlbum:(UIImage *)savedImage {
UIImageWriteToSavedPhotosAlbum(savedImage, self, @selector(image:didFinishSavingWithError:contextInfo:), NULL);
}
// 指定回调方法
- (void)image:(UIImage *)image didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo {
NSString *msg = nil;
if (error != NULL) {
msg = @"保存图片失败";
} else {
msg = @"保存图片成功";
}
NSLog(@"%@",msg);
}
@end
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