//
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// TZPhotoPreviewController.m
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// TZImagePickerController
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//
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// Created by 谭真 on 15/12/24.
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// Copyright © 2015年 谭真. All rights reserved.
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//
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#import "TZPhotoPreviewController.h"
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#import "TZPhotoPreviewCell.h"
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#import "TZAssetModel.h"
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#import "UIView+Layout.h"
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#import "TZImagePickerController.h"
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#import "TZImageManager.h"
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#import "TZImageCropManager.h"
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@interface TZPhotoPreviewController ()<UICollectionViewDataSource,UICollectionViewDelegate,UIScrollViewDelegate> {
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UICollectionView *_collectionView;
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UICollectionViewFlowLayout *_layout;
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NSArray *_photosTemp;
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NSArray *_assetsTemp;
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UIView *_naviBar;
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UIButton *_backButton;
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UIButton *_selectButton;
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UILabel *_indexLabel;
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UIView *_toolBar;
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UIButton *_doneButton;
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UIImageView *_numberImageView;
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UILabel *_numberLabel;
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UIButton *_originalPhotoButton;
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UILabel *_originalPhotoLabel;
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CGFloat _offsetItemCount;
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}
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@property (nonatomic, assign) BOOL isHideNaviBar;
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@property (nonatomic, strong) UIView *cropBgView;
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@property (nonatomic, strong) UIView *cropView;
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@property (nonatomic, assign) double progress;
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@property (strong, nonatomic) id alertView;
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@end
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@implementation TZPhotoPreviewController
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- (void)viewDidLoad {
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[super viewDidLoad];
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[TZImageManager manager].shouldFixOrientation = YES;
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__weak typeof(self) weakSelf = self;
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TZImagePickerController *_tzImagePickerVc = (TZImagePickerController *)weakSelf.navigationController;
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if (!self.models.count) {
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self.models = [NSMutableArray arrayWithArray:_tzImagePickerVc.selectedModels];
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_assetsTemp = [NSMutableArray arrayWithArray:_tzImagePickerVc.selectedAssets];
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}
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[self configCollectionView];
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[self configCustomNaviBar];
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[self configBottomToolBar];
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self.view.clipsToBounds = YES;
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[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(didChangeStatusBarOrientationNotification:) name:UIApplicationDidChangeStatusBarOrientationNotification object:nil];
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}
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- (void)setPhotos:(NSMutableArray *)photos {
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_photos = photos;
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_photosTemp = [NSArray arrayWithArray:photos];
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}
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- (void)viewWillAppear:(BOOL)animated {
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[super viewWillAppear:animated];
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[self.navigationController setNavigationBarHidden:YES animated:YES];
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if (iOS7Later) [UIApplication sharedApplication].statusBarHidden = YES;
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if (_currentIndex) [_collectionView setContentOffset:CGPointMake((self.view.tz_width + 20) * _currentIndex, 0) animated:NO];
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[self refreshNaviBarAndBottomBarState];
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}
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- (void)viewWillDisappear:(BOOL)animated {
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[super viewWillDisappear:animated];
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[self.navigationController setNavigationBarHidden:NO animated:YES];
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TZImagePickerController *tzImagePickerVc = (TZImagePickerController *)self.navigationController;
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if (tzImagePickerVc.needShowStatusBar && iOS7Later) {
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[UIApplication sharedApplication].statusBarHidden = NO;
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}
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[TZImageManager manager].shouldFixOrientation = NO;
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}
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- (BOOL)prefersStatusBarHidden {
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return YES;
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}
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- (void)configCustomNaviBar {
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TZImagePickerController *tzImagePickerVc = (TZImagePickerController *)self.navigationController;
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_naviBar = [[UIView alloc] initWithFrame:CGRectZero];
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_naviBar.backgroundColor = [UIColor colorWithRed:(34/255.0) green:(34/255.0) blue:(34/255.0) alpha:0.7];
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_backButton = [[UIButton alloc] initWithFrame:CGRectZero];
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[_backButton setImage:[UIImage imageNamedFromMyBundle:@"navi_back"] forState:UIControlStateNormal];
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[_backButton setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
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[_backButton addTarget:self action:@selector(backButtonClick) forControlEvents:UIControlEventTouchUpInside];
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_selectButton = [[UIButton alloc] initWithFrame:CGRectZero];
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[_selectButton setImage:tzImagePickerVc.photoDefImage forState:UIControlStateNormal];
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[_selectButton setImage:tzImagePickerVc.photoSelImage forState:UIControlStateSelected];
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_selectButton.imageView.clipsToBounds = YES;
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_selectButton.imageEdgeInsets = UIEdgeInsetsMake(10, 0, 10, 0);
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_selectButton.imageView.contentMode = UIViewContentModeScaleAspectFit;
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[_selectButton addTarget:self action:@selector(select:) forControlEvents:UIControlEventTouchUpInside];
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_selectButton.hidden = !tzImagePickerVc.showSelectBtn;
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_indexLabel = [[UILabel alloc] init];
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_indexLabel.font = [UIFont systemFontOfSize:14];
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_indexLabel.textColor = [UIColor whiteColor];
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_indexLabel.textAlignment = NSTextAlignmentCenter;
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[_naviBar addSubview:_selectButton];
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[_naviBar addSubview:_indexLabel];
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[_naviBar addSubview:_backButton];
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[self.view addSubview:_naviBar];
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}
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- (void)configBottomToolBar {
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_toolBar = [[UIView alloc] initWithFrame:CGRectZero];
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static CGFloat rgb = 34 / 255.0;
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_toolBar.backgroundColor = [UIColor colorWithRed:rgb green:rgb blue:rgb alpha:0.7];
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TZImagePickerController *_tzImagePickerVc = (TZImagePickerController *)self.navigationController;
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if (_tzImagePickerVc.allowPickingOriginalPhoto) {
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_originalPhotoButton = [UIButton buttonWithType:UIButtonTypeCustom];
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_originalPhotoButton.imageEdgeInsets = UIEdgeInsetsMake(0, -10, 0, 0);
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_originalPhotoButton.backgroundColor = [UIColor clearColor];
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[_originalPhotoButton addTarget:self action:@selector(originalPhotoButtonClick) forControlEvents:UIControlEventTouchUpInside];
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_originalPhotoButton.titleLabel.font = [UIFont systemFontOfSize:13];
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[_originalPhotoButton setTitle:_tzImagePickerVc.fullImageBtnTitleStr forState:UIControlStateNormal];
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[_originalPhotoButton setTitle:_tzImagePickerVc.fullImageBtnTitleStr forState:UIControlStateSelected];
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[_originalPhotoButton setTitleColor:[UIColor lightGrayColor] forState:UIControlStateNormal];
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[_originalPhotoButton setTitleColor:[UIColor whiteColor] forState:UIControlStateSelected];
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[_originalPhotoButton setImage:_tzImagePickerVc.photoPreviewOriginDefImage forState:UIControlStateNormal];
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[_originalPhotoButton setImage:_tzImagePickerVc.photoOriginSelImage forState:UIControlStateSelected];
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_originalPhotoLabel = [[UILabel alloc] init];
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_originalPhotoLabel.textAlignment = NSTextAlignmentLeft;
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_originalPhotoLabel.font = [UIFont systemFontOfSize:13];
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_originalPhotoLabel.textColor = [UIColor whiteColor];
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_originalPhotoLabel.backgroundColor = [UIColor clearColor];
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if (_isSelectOriginalPhoto) [self showPhotoBytes];
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}
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_doneButton = [UIButton buttonWithType:UIButtonTypeCustom];
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_doneButton.titleLabel.font = [UIFont systemFontOfSize:16];
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[_doneButton addTarget:self action:@selector(doneButtonClick) forControlEvents:UIControlEventTouchUpInside];
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[_doneButton setTitle:_tzImagePickerVc.doneBtnTitleStr forState:UIControlStateNormal];
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[_doneButton setTitleColor:_tzImagePickerVc.oKButtonTitleColorNormal forState:UIControlStateNormal];
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_numberImageView = [[UIImageView alloc] initWithImage:_tzImagePickerVc.photoNumberIconImage];
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_numberImageView.backgroundColor = [UIColor clearColor];
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_numberImageView.clipsToBounds = YES;
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_numberImageView.contentMode = UIViewContentModeScaleAspectFit;
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_numberImageView.hidden = _tzImagePickerVc.selectedModels.count <= 0;
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_numberLabel = [[UILabel alloc] init];
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_numberLabel.font = [UIFont systemFontOfSize:15];
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_numberLabel.textColor = [UIColor whiteColor];
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_numberLabel.textAlignment = NSTextAlignmentCenter;
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_numberLabel.text = [NSString stringWithFormat:@"%zd",_tzImagePickerVc.selectedModels.count];
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_numberLabel.hidden = _tzImagePickerVc.selectedModels.count <= 0;
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_numberLabel.backgroundColor = [UIColor clearColor];
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[_originalPhotoButton addSubview:_originalPhotoLabel];
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[_toolBar addSubview:_doneButton];
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[_toolBar addSubview:_originalPhotoButton];
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[_toolBar addSubview:_numberImageView];
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[_toolBar addSubview:_numberLabel];
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[self.view addSubview:_toolBar];
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if (_tzImagePickerVc.photoPreviewPageUIConfigBlock) {
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_tzImagePickerVc.photoPreviewPageUIConfigBlock(_collectionView, _naviBar, _backButton, _selectButton, _indexLabel, _toolBar, _originalPhotoButton, _originalPhotoLabel, _doneButton, _numberImageView, _numberLabel);
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}
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}
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- (void)configCollectionView {
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_layout = [[UICollectionViewFlowLayout alloc] init];
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_layout.scrollDirection = UICollectionViewScrollDirectionHorizontal;
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_collectionView = [[UICollectionView alloc] initWithFrame:CGRectZero collectionViewLayout:_layout];
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_collectionView.backgroundColor = [UIColor blackColor];
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_collectionView.dataSource = self;
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_collectionView.delegate = self;
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_collectionView.pagingEnabled = YES;
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_collectionView.scrollsToTop = NO;
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_collectionView.showsHorizontalScrollIndicator = NO;
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_collectionView.contentOffset = CGPointMake(0, 0);
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_collectionView.contentSize = CGSizeMake(self.models.count * (self.view.tz_width + 20), 0);
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[self.view addSubview:_collectionView];
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[_collectionView registerClass:[TZPhotoPreviewCell class] forCellWithReuseIdentifier:@"TZPhotoPreviewCell"];
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[_collectionView registerClass:[TZVideoPreviewCell class] forCellWithReuseIdentifier:@"TZVideoPreviewCell"];
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[_collectionView registerClass:[TZGifPreviewCell class] forCellWithReuseIdentifier:@"TZGifPreviewCell"];
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}
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- (void)configCropView {
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TZImagePickerController *_tzImagePickerVc = (TZImagePickerController *)self.navigationController;
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if (_tzImagePickerVc.maxImagesCount <= 1 && _tzImagePickerVc.allowCrop) {
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[_cropView removeFromSuperview];
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[_cropBgView removeFromSuperview];
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_cropBgView = [UIView new];
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_cropBgView.userInteractionEnabled = NO;
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_cropBgView.frame = self.view.bounds;
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_cropBgView.backgroundColor = [UIColor clearColor];
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[self.view addSubview:_cropBgView];
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[TZImageCropManager overlayClippingWithView:_cropBgView cropRect:_tzImagePickerVc.cropRect containerView:self.view needCircleCrop:_tzImagePickerVc.needCircleCrop];
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_cropView = [UIView new];
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_cropView.userInteractionEnabled = NO;
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_cropView.frame = _tzImagePickerVc.cropRect;
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_cropView.backgroundColor = [UIColor clearColor];
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_cropView.layer.borderColor = [UIColor whiteColor].CGColor;
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_cropView.layer.borderWidth = 1.0;
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if (_tzImagePickerVc.needCircleCrop) {
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_cropView.layer.cornerRadius = _tzImagePickerVc.cropRect.size.width / 2;
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_cropView.clipsToBounds = YES;
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}
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[self.view addSubview:_cropView];
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if (_tzImagePickerVc.cropViewSettingBlock) {
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_tzImagePickerVc.cropViewSettingBlock(_cropView);
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}
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[self.view bringSubviewToFront:_naviBar];
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[self.view bringSubviewToFront:_toolBar];
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}
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}
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#pragma mark - Layout
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- (void)viewDidLayoutSubviews {
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[super viewDidLayoutSubviews];
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TZImagePickerController *_tzImagePickerVc = (TZImagePickerController *)self.navigationController;
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CGFloat statusBarHeight = [TZCommonTools tz_statusBarHeight];
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CGFloat statusBarHeightInterval = statusBarHeight - 20;
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CGFloat naviBarHeight = statusBarHeight + _tzImagePickerVc.navigationBar.tz_height;
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_naviBar.frame = CGRectMake(0, 0, self.view.tz_width, naviBarHeight);
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_backButton.frame = CGRectMake(10, 10 + statusBarHeightInterval, 44, 44);
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_selectButton.frame = CGRectMake(self.view.tz_width - 56, 10 + statusBarHeightInterval, 44, 44);
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_indexLabel.frame = _selectButton.frame;
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_layout.itemSize = CGSizeMake(self.view.tz_width + 20, self.view.tz_height);
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_layout.minimumInteritemSpacing = 0;
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_layout.minimumLineSpacing = 0;
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_collectionView.frame = CGRectMake(-10, 0, self.view.tz_width + 20, self.view.tz_height);
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[_collectionView setCollectionViewLayout:_layout];
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if (_offsetItemCount > 0) {
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CGFloat offsetX = _offsetItemCount * _layout.itemSize.width;
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[_collectionView setContentOffset:CGPointMake(offsetX, 0)];
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}
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if (_tzImagePickerVc.allowCrop) {
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[_collectionView reloadData];
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}
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CGFloat toolBarHeight = [TZCommonTools tz_isIPhoneX] ? 44 + (83 - 49) : 44;
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CGFloat toolBarTop = self.view.tz_height - toolBarHeight;
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_toolBar.frame = CGRectMake(0, toolBarTop, self.view.tz_width, toolBarHeight);
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if (_tzImagePickerVc.allowPickingOriginalPhoto) {
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CGFloat fullImageWidth = [_tzImagePickerVc.fullImageBtnTitleStr tz_calculateSizeWithAttributes:@{NSFontAttributeName:[UIFont systemFontOfSize:13]} maxSize:CGSizeMake(CGFLOAT_MAX, CGFLOAT_MAX)].width;
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_originalPhotoButton.frame = CGRectMake(0, 0, fullImageWidth + 56, 44);
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_originalPhotoLabel.frame = CGRectMake(fullImageWidth + 42, 0, 80, 44);
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}
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[_doneButton sizeToFit];
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_doneButton.frame = CGRectMake(self.view.tz_width - _doneButton.tz_width - 12, 0, _doneButton.tz_width, 44);
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_numberImageView.frame = CGRectMake(_doneButton.tz_left - 24 - 5, 10, 24, 24);
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_numberLabel.frame = _numberImageView.frame;
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[self configCropView];
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if (_tzImagePickerVc.photoPreviewPageDidLayoutSubviewsBlock) {
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_tzImagePickerVc.photoPreviewPageDidLayoutSubviewsBlock(_collectionView, _naviBar, _backButton, _selectButton, _indexLabel, _toolBar, _originalPhotoButton, _originalPhotoLabel, _doneButton, _numberImageView, _numberLabel);
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}
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}
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#pragma mark - Notification
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- (void)didChangeStatusBarOrientationNotification:(NSNotification *)noti {
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_offsetItemCount = _collectionView.contentOffset.x / _layout.itemSize.width;
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}
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#pragma mark - Click Event
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- (void)select:(UIButton *)selectButton {
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TZImagePickerController *_tzImagePickerVc = (TZImagePickerController *)self.navigationController;
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TZAssetModel *model = _models[_currentIndex];
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if (!selectButton.isSelected) {
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// 1. select:check if over the maxImagesCount / 选择照片,检查是否超过了最大个数的限制
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if (_tzImagePickerVc.selectedModels.count >= _tzImagePickerVc.maxImagesCount) {
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NSString *title = [NSString stringWithFormat:[NSBundle tz_localizedStringForKey:@"Select a maximum of %zd photos"], _tzImagePickerVc.maxImagesCount];
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[_tzImagePickerVc showAlertWithTitle:title];
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return;
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// 2. if not over the maxImagesCount / 如果没有超过最大个数限制
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} else {
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[_tzImagePickerVc addSelectedModel:model];
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if (self.photos) {
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[_tzImagePickerVc.selectedAssets addObject:_assetsTemp[_currentIndex]];
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[self.photos addObject:_photosTemp[_currentIndex]];
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}
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if (model.type == TZAssetModelMediaTypeVideo && !_tzImagePickerVc.allowPickingMultipleVideo) {
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[_tzImagePickerVc showAlertWithTitle:[NSBundle tz_localizedStringForKey:@"Select the video when in multi state, we will handle the video as a photo"]];
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}
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}
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} else {
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NSArray *selectedModels = [NSArray arrayWithArray:_tzImagePickerVc.selectedModels];
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for (TZAssetModel *model_item in selectedModels) {
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if ([[[TZImageManager manager] getAssetIdentifier:model.asset] isEqualToString:[[TZImageManager manager] getAssetIdentifier:model_item.asset]]) {
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// 1.6.7版本更新:防止有多个一样的model,一次性被移除了
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NSArray *selectedModelsTmp = [NSArray arrayWithArray:_tzImagePickerVc.selectedModels];
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for (NSInteger i = 0; i < selectedModelsTmp.count; i++) {
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TZAssetModel *model = selectedModelsTmp[i];
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if ([model isEqual:model_item]) {
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[_tzImagePickerVc removeSelectedModel:model];
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// [_tzImagePickerVc.selectedModels removeObjectAtIndex:i];
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break;
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}
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}
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if (self.photos) {
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// 1.6.7版本更新:防止有多个一样的asset,一次性被移除了
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NSArray *selectedAssetsTmp = [NSArray arrayWithArray:_tzImagePickerVc.selectedAssets];
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for (NSInteger i = 0; i < selectedAssetsTmp.count; i++) {
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id asset = selectedAssetsTmp[i];
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if ([asset isEqual:_assetsTemp[_currentIndex]]) {
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[_tzImagePickerVc.selectedAssets removeObjectAtIndex:i];
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break;
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}
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}
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// [_tzImagePickerVc.selectedAssets removeObject:_assetsTemp[_currentIndex]];
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[self.photos removeObject:_photosTemp[_currentIndex]];
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}
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break;
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}
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}
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}
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model.isSelected = !selectButton.isSelected;
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[self refreshNaviBarAndBottomBarState];
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if (model.isSelected) {
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[UIView showOscillatoryAnimationWithLayer:selectButton.imageView.layer type:TZOscillatoryAnimationToBigger];
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}
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[UIView showOscillatoryAnimationWithLayer:_numberImageView.layer type:TZOscillatoryAnimationToSmaller];
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}
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- (void)backButtonClick {
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if (self.navigationController.childViewControllers.count < 2) {
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[self.navigationController dismissViewControllerAnimated:YES completion:nil];
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return;
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}
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[self.navigationController popViewControllerAnimated:YES];
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if (self.backButtonClickBlock) {
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self.backButtonClickBlock(_isSelectOriginalPhoto);
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}
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}
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- (void)doneButtonClick {
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TZImagePickerController *_tzImagePickerVc = (TZImagePickerController *)self.navigationController;
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// 如果图片正在从iCloud同步中,提醒用户
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if (_progress > 0 && _progress < 1 && (_selectButton.isSelected || !_tzImagePickerVc.selectedModels.count )) {
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_alertView = [_tzImagePickerVc showAlertWithTitle:[NSBundle tz_localizedStringForKey:@"Synchronizing photos from iCloud"]];
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return;
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}
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// 如果没有选中过照片 点击确定时选中当前预览的照片
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if (_tzImagePickerVc.selectedModels.count == 0 && _tzImagePickerVc.minImagesCount <= 0) {
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TZAssetModel *model = _models[_currentIndex];
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[_tzImagePickerVc addSelectedModel:model];
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}
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if (_tzImagePickerVc.allowCrop) { // 裁剪状态
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NSIndexPath *indexPath = [NSIndexPath indexPathForItem:_currentIndex inSection:0];
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TZPhotoPreviewCell *cell = (TZPhotoPreviewCell *)[_collectionView cellForItemAtIndexPath:indexPath];
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UIImage *cropedImage = [TZImageCropManager cropImageView:cell.previewView.imageView toRect:_tzImagePickerVc.cropRect zoomScale:cell.previewView.scrollView.zoomScale containerView:self.view];
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if (_tzImagePickerVc.needCircleCrop) {
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cropedImage = [TZImageCropManager circularClipImage:cropedImage];
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}
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if (self.doneButtonClickBlockCropMode) {
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TZAssetModel *model = _models[_currentIndex];
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self.doneButtonClickBlockCropMode(cropedImage,model.asset);
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}
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} else if (self.doneButtonClickBlock) { // 非裁剪状态
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self.doneButtonClickBlock(_isSelectOriginalPhoto);
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}
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if (self.doneButtonClickBlockWithPreviewType) {
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self.doneButtonClickBlockWithPreviewType(self.photos,_tzImagePickerVc.selectedAssets,self.isSelectOriginalPhoto);
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}
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}
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- (void)originalPhotoButtonClick {
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_originalPhotoButton.selected = !_originalPhotoButton.isSelected;
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_isSelectOriginalPhoto = _originalPhotoButton.isSelected;
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_originalPhotoLabel.hidden = !_originalPhotoButton.isSelected;
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if (_isSelectOriginalPhoto) {
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[self showPhotoBytes];
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if (!_selectButton.isSelected) {
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// 如果当前已选择照片张数 < 最大可选张数 && 最大可选张数大于1，就选中该张图
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TZImagePickerController *_tzImagePickerVc = (TZImagePickerController *)self.navigationController;
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if (_tzImagePickerVc.selectedModels.count < _tzImagePickerVc.maxImagesCount && _tzImagePickerVc.showSelectBtn) {
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[self select:_selectButton];
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}
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}
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}
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}
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- (void)didTapPreviewCell {
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self.isHideNaviBar = !self.isHideNaviBar;
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_naviBar.hidden = self.isHideNaviBar;
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_toolBar.hidden = self.isHideNaviBar;
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}
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#pragma mark - UIScrollViewDelegate
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- (void)scrollViewDidScroll:(UIScrollView *)scrollView {
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CGFloat offSetWidth = scrollView.contentOffset.x;
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offSetWidth = offSetWidth + ((self.view.tz_width + 20) * 0.5);
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NSInteger currentIndex = offSetWidth / (self.view.tz_width + 20);
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if (currentIndex < _models.count && _currentIndex != currentIndex) {
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_currentIndex = currentIndex;
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[self refreshNaviBarAndBottomBarState];
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}
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[[NSNotificationCenter defaultCenter] postNotificationName:@"photoPreviewCollectionViewDidScroll" object:nil];
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}
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#pragma mark - UICollectionViewDataSource && Delegate
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- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section {
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return _models.count;
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}
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- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath {
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TZImagePickerController *_tzImagePickerVc = (TZImagePickerController *)self.navigationController;
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TZAssetModel *model = _models[indexPath.item];
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TZAssetPreviewCell *cell;
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__weak typeof(self) weakSelf = self;
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if (_tzImagePickerVc.allowPickingMultipleVideo && model.type == TZAssetModelMediaTypeVideo) {
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cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"TZVideoPreviewCell" forIndexPath:indexPath];
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} else if (_tzImagePickerVc.allowPickingMultipleVideo && model.type == TZAssetModelMediaTypePhotoGif && _tzImagePickerVc.allowPickingGif) {
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cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"TZGifPreviewCell" forIndexPath:indexPath];
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} else {
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cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"TZPhotoPreviewCell" forIndexPath:indexPath];
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TZPhotoPreviewCell *photoPreviewCell = (TZPhotoPreviewCell *)cell;
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photoPreviewCell.cropRect = _tzImagePickerVc.cropRect;
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photoPreviewCell.allowCrop = _tzImagePickerVc.allowCrop;
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__weak typeof(_tzImagePickerVc) weakTzImagePickerVc = _tzImagePickerVc;
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__weak typeof(_collectionView) weakCollectionView = _collectionView;
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__weak typeof(photoPreviewCell) weakCell = photoPreviewCell;
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[photoPreviewCell setImageProgressUpdateBlock:^(double progress) {
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__strong typeof(weakSelf) strongSelf = weakSelf;
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__strong typeof(weakTzImagePickerVc) strongTzImagePickerVc = weakTzImagePickerVc;
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__strong typeof(weakCollectionView) strongCollectionView = weakCollectionView;
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__strong typeof(weakCell) strongCell = weakCell;
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strongSelf.progress = progress;
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if (progress >= 1) {
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if (strongSelf.isSelectOriginalPhoto) [strongSelf showPhotoBytes];
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if (strongSelf.alertView && [strongCollectionView.visibleCells containsObject:strongCell]) {
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[strongTzImagePickerVc hideAlertView:strongSelf.alertView];
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strongSelf.alertView = nil;
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[strongSelf doneButtonClick];
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}
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}
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}];
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}
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cell.model = model;
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[cell setSingleTapGestureBlock:^{
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__strong typeof(weakSelf) strongSelf = weakSelf;
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[strongSelf didTapPreviewCell];
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}];
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return cell;
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}
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- (void)collectionView:(UICollectionView *)collectionView willDisplayCell:(UICollectionViewCell *)cell forItemAtIndexPath:(NSIndexPath *)indexPath {
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if ([cell isKindOfClass:[TZPhotoPreviewCell class]]) {
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[(TZPhotoPreviewCell *)cell recoverSubviews];
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}
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}
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- (void)collectionView:(UICollectionView *)collectionView didEndDisplayingCell:(UICollectionViewCell *)cell forItemAtIndexPath:(NSIndexPath *)indexPath {
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if ([cell isKindOfClass:[TZPhotoPreviewCell class]]) {
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[(TZPhotoPreviewCell *)cell recoverSubviews];
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} else if ([cell isKindOfClass:[TZVideoPreviewCell class]]) {
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[(TZVideoPreviewCell *)cell pausePlayerAndShowNaviBar];
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}
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}
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#pragma mark - Private Method
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- (void)dealloc {
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// NSLog(@"%@ dealloc",NSStringFromClass(self.class));
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}
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- (void)refreshNaviBarAndBottomBarState {
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TZImagePickerController *_tzImagePickerVc = (TZImagePickerController *)self.navigationController;
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TZAssetModel *model = _models[_currentIndex];
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_selectButton.selected = model.isSelected;
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[self refreshSelectButtonImageViewContentMode];
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if (_selectButton.isSelected && _tzImagePickerVc.showSelectedIndex) {
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NSString *assetId = [[TZImageManager manager] getAssetIdentifier:model.asset];
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NSString *index = [NSString stringWithFormat:@"%zd", [_tzImagePickerVc.selectedAssetIds indexOfObject:assetId] + 1];
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_indexLabel.text = index;
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_indexLabel.hidden = NO;
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} else {
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_indexLabel.hidden = YES;
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}
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_numberLabel.text = [NSString stringWithFormat:@"%zd",_tzImagePickerVc.selectedModels.count];
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_numberImageView.hidden = (_tzImagePickerVc.selectedModels.count <= 0 || _isHideNaviBar || _isCropImage);
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_numberLabel.hidden = (_tzImagePickerVc.selectedModels.count <= 0 || _isHideNaviBar || _isCropImage);
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_originalPhotoButton.selected = _isSelectOriginalPhoto;
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_originalPhotoLabel.hidden = !_originalPhotoButton.isSelected;
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if (_isSelectOriginalPhoto) [self showPhotoBytes];
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// If is previewing video, hide original photo button
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// 如果正在预览的是视频，隐藏原图按钮
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if (!_isHideNaviBar) {
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if (model.type == TZAssetModelMediaTypeVideo) {
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_originalPhotoButton.hidden = YES;
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_originalPhotoLabel.hidden = YES;
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} else {
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_originalPhotoButton.hidden = NO;
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if (_isSelectOriginalPhoto) _originalPhotoLabel.hidden = NO;
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}
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}
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_doneButton.hidden = NO;
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_selectButton.hidden = !_tzImagePickerVc.showSelectBtn;
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// 让宽度/高度小于 最小可选照片尺寸 的图片不能选中
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if (![[TZImageManager manager] isPhotoSelectableWithAsset:model.asset]) {
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_numberLabel.hidden = YES;
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_numberImageView.hidden = YES;
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_selectButton.hidden = YES;
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_originalPhotoButton.hidden = YES;
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_originalPhotoLabel.hidden = YES;
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_doneButton.hidden = YES;
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}
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}
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- (void)refreshSelectButtonImageViewContentMode {
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dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
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if (self->_selectButton.imageView.image.size.width <= 27) {
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self->_selectButton.imageView.contentMode = UIViewContentModeCenter;
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} else {
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self->_selectButton.imageView.contentMode = UIViewContentModeScaleAspectFit;
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}
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});
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}
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- (void)showPhotoBytes {
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[[TZImageManager manager] getPhotosBytesWithArray:@[_models[_currentIndex]] completion:^(NSString *totalBytes) {
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self->_originalPhotoLabel.text = [NSString stringWithFormat:@"(%@)",totalBytes];
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}];
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}
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@end
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