//
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// TZPhotoPickerController.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 "TZPhotoPickerController.h"
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#import "TZImagePickerController.h"
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#import "TZPhotoPreviewController.h"
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#import "TZAssetCell.h"
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#import "TZAssetModel.h"
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#import "UIView+Layout.h"
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#import "TZImageManager.h"
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#import "TZVideoPlayerController.h"
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#import "TZGifPhotoPreviewController.h"
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#import "TZLocationManager.h"
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#import <MobileCoreServices/MobileCoreServices.h>
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@interface TZPhotoPickerController ()<UICollectionViewDataSource,UICollectionViewDelegate,UIImagePickerControllerDelegate,UINavigationControllerDelegate,UIAlertViewDelegate> {
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NSMutableArray *_models;
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UIView *_bottomToolBar;
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UIButton *_previewButton;
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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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UIView *_divideLine;
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BOOL _shouldScrollToBottom;
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BOOL _showTakePhotoBtn;
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CGFloat _offsetItemCount;
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}
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@property CGRect previousPreheatRect;
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@property (nonatomic, assign) BOOL isSelectOriginalPhoto;
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@property (nonatomic, strong) TZCollectionView *collectionView;
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@property (strong, nonatomic) UICollectionViewFlowLayout *layout;
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@property (nonatomic, strong) UIImagePickerController *imagePickerVc;
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@property (strong, nonatomic) CLLocation *location;
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@property (assign, nonatomic) BOOL useCachedImage;
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@end
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static CGSize AssetGridThumbnailSize;
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static CGFloat itemMargin = 5;
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@implementation TZPhotoPickerController
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Wdeprecated-declarations"
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- (UIImagePickerController *)imagePickerVc {
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if (_imagePickerVc == nil) {
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_imagePickerVc = [[UIImagePickerController alloc] init];
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_imagePickerVc.delegate = self;
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// set appearance / 改变相册选择页的导航栏外观
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if (iOS7Later) {
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_imagePickerVc.navigationBar.barTintColor = self.navigationController.navigationBar.barTintColor;
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}
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_imagePickerVc.navigationBar.tintColor = self.navigationController.navigationBar.tintColor;
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UIBarButtonItem *tzBarItem, *BarItem;
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if (iOS9Later) {
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tzBarItem = [UIBarButtonItem appearanceWhenContainedInInstancesOfClasses:@[[TZImagePickerController class]]];
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BarItem = [UIBarButtonItem appearanceWhenContainedInInstancesOfClasses:@[[UIImagePickerController class]]];
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} else {
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tzBarItem = [UIBarButtonItem appearanceWhenContainedIn:[TZImagePickerController class], nil];
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BarItem = [UIBarButtonItem appearanceWhenContainedIn:[UIImagePickerController class], nil];
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}
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NSDictionary *titleTextAttributes = [tzBarItem titleTextAttributesForState:UIControlStateNormal];
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[BarItem setTitleTextAttributes:titleTextAttributes forState:UIControlStateNormal];
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}
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return _imagePickerVc;
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}
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- (void)viewDidLoad {
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[super viewDidLoad];
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self.isFirstAppear = YES;
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TZImagePickerController *tzImagePickerVc = (TZImagePickerController *)self.navigationController;
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_isSelectOriginalPhoto = tzImagePickerVc.isSelectOriginalPhoto;
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_shouldScrollToBottom = YES;
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self.view.backgroundColor = [UIColor whiteColor];
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self.navigationItem.title = _model.name;
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self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:tzImagePickerVc.cancelBtnTitleStr style:UIBarButtonItemStylePlain target:tzImagePickerVc action:@selector(cancelButtonClick)];
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if (tzImagePickerVc.navLeftBarButtonSettingBlock) {
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UIButton *leftButton = [UIButton buttonWithType:UIButtonTypeCustom];
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leftButton.frame = CGRectMake(0, 0, 44, 44);
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[leftButton addTarget:self action:@selector(navLeftBarButtonClick) forControlEvents:UIControlEventTouchUpInside];
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tzImagePickerVc.navLeftBarButtonSettingBlock(leftButton);
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self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:leftButton];
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}
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_showTakePhotoBtn = _model.isCameraRoll && ((tzImagePickerVc.allowTakePicture && tzImagePickerVc.allowPickingImage) || (tzImagePickerVc.allowTakeVideo && tzImagePickerVc.allowPickingVideo));
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// [self resetCachedAssets];
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[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(didChangeStatusBarOrientationNotification:) name:UIApplicationDidChangeStatusBarOrientationNotification object:nil];
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}
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- (void)fetchAssetModels {
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TZImagePickerController *tzImagePickerVc = (TZImagePickerController *)self.navigationController;
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if (_isFirstAppear && !_model.models.count) {
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[tzImagePickerVc showProgressHUD];
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}
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dispatch_async(dispatch_get_global_queue(0, 0), ^{
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if (!tzImagePickerVc.sortAscendingByModificationDate && self->_isFirstAppear && iOS8Later && self->_model.isCameraRoll) {
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[[TZImageManager manager] getCameraRollAlbum:tzImagePickerVc.allowPickingVideo allowPickingImage:tzImagePickerVc.allowPickingImage needFetchAssets:YES completion:^(TZAlbumModel *model) {
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self->_model = model;
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self->_models = [NSMutableArray arrayWithArray:self->_model.models];
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[self initSubviews];
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}];
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} else {
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if (self->_showTakePhotoBtn || !iOS8Later || self->_isFirstAppear) {
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[[TZImageManager manager] getAssetsFromFetchResult:self->_model.result completion:^(NSArray<TZAssetModel *> *models) {
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self->_models = [NSMutableArray arrayWithArray:models];
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[self initSubviews];
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}];
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} else {
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self->_models = [NSMutableArray arrayWithArray:self->_model.models];
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[self initSubviews];
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}
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}
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});
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}
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- (void)initSubviews {
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dispatch_async(dispatch_get_main_queue(), ^{
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TZImagePickerController *tzImagePickerVc = (TZImagePickerController *)self.navigationController;
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[tzImagePickerVc hideProgressHUD];
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[self checkSelectedModels];
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[self configCollectionView];
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self->_collectionView.hidden = YES;
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[self configBottomToolBar];
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[self scrollCollectionViewToBottom];
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});
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}
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- (void)viewWillDisappear:(BOOL)animated {
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[super viewWillDisappear:animated];
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TZImagePickerController *tzImagePickerVc = (TZImagePickerController *)self.navigationController;
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tzImagePickerVc.isSelectOriginalPhoto = _isSelectOriginalPhoto;
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}
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- (BOOL)prefersStatusBarHidden {
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return NO;
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}
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- (void)configCollectionView {
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_layout = [[UICollectionViewFlowLayout alloc] init];
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_collectionView = [[TZCollectionView alloc] initWithFrame:CGRectZero collectionViewLayout:_layout];
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_collectionView.backgroundColor = [UIColor whiteColor];
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_collectionView.dataSource = self;
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_collectionView.delegate = self;
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_collectionView.alwaysBounceHorizontal = NO;
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_collectionView.contentInset = UIEdgeInsetsMake(itemMargin, itemMargin, itemMargin, itemMargin);
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if (_showTakePhotoBtn) {
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_collectionView.contentSize = CGSizeMake(self.view.tz_width, ((_model.count + self.columnNumber) / self.columnNumber) * self.view.tz_width);
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} else {
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_collectionView.contentSize = CGSizeMake(self.view.tz_width, ((_model.count + self.columnNumber - 1) / self.columnNumber) * self.view.tz_width);
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}
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[self.view addSubview:_collectionView];
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[_collectionView registerClass:[TZAssetCell class] forCellWithReuseIdentifier:@"TZAssetCell"];
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[_collectionView registerClass:[TZAssetCameraCell class] forCellWithReuseIdentifier:@"TZAssetCameraCell"];
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}
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- (void)viewWillAppear:(BOOL)animated {
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[super viewWillAppear:animated];
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// Determine the size of the thumbnails to request from the PHCachingImageManager
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CGFloat scale = 2.0;
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if ([UIScreen mainScreen].bounds.size.width > 600) {
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scale = 1.0;
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}
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CGSize cellSize = ((UICollectionViewFlowLayout *)_collectionView.collectionViewLayout).itemSize;
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AssetGridThumbnailSize = CGSizeMake(cellSize.width * scale, cellSize.height * scale);
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if (!_models) {
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[self fetchAssetModels];
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}
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}
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- (void)viewDidAppear:(BOOL)animated {
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[super viewDidAppear:animated];
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if (iOS8Later) {
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// [self updateCachedAssets];
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}
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}
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- (void)configBottomToolBar {
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TZImagePickerController *tzImagePickerVc = (TZImagePickerController *)self.navigationController;
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if (!tzImagePickerVc.showSelectBtn) return;
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_bottomToolBar = [[UIView alloc] initWithFrame:CGRectZero];
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CGFloat rgb = 253 / 255.0;
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_bottomToolBar.backgroundColor = [UIColor colorWithRed:rgb green:rgb blue:rgb alpha:1.0];
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_previewButton = [UIButton buttonWithType:UIButtonTypeCustom];
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[_previewButton addTarget:self action:@selector(previewButtonClick) forControlEvents:UIControlEventTouchUpInside];
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_previewButton.titleLabel.font = [UIFont systemFontOfSize:16];
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[_previewButton setTitle:tzImagePickerVc.previewBtnTitleStr forState:UIControlStateNormal];
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[_previewButton setTitle:tzImagePickerVc.previewBtnTitleStr forState:UIControlStateDisabled];
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[_previewButton setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
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[_previewButton setTitleColor:[UIColor lightGrayColor] forState:UIControlStateDisabled];
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_previewButton.enabled = tzImagePickerVc.selectedModels.count;
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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 addTarget:self action:@selector(originalPhotoButtonClick) forControlEvents:UIControlEventTouchUpInside];
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_originalPhotoButton.titleLabel.font = [UIFont systemFontOfSize:16];
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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 blackColor] forState:UIControlStateSelected];
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[_originalPhotoButton setImage:tzImagePickerVc.photoOriginDefImage forState:UIControlStateNormal];
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[_originalPhotoButton setImage:tzImagePickerVc.photoOriginSelImage forState:UIControlStateSelected];
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_originalPhotoButton.imageView.clipsToBounds = YES;
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_originalPhotoButton.imageView.contentMode = UIViewContentModeScaleAspectFit;
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_originalPhotoButton.selected = _isSelectOriginalPhoto;
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_originalPhotoButton.enabled = tzImagePickerVc.selectedModels.count > 0;
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_originalPhotoLabel = [[UILabel alloc] init];
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_originalPhotoLabel.textAlignment = NSTextAlignmentLeft;
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_originalPhotoLabel.font = [UIFont systemFontOfSize:16];
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_originalPhotoLabel.textColor = [UIColor blackColor];
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if (_isSelectOriginalPhoto) [self getSelectedPhotoBytes];
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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 setTitle:tzImagePickerVc.doneBtnTitleStr forState:UIControlStateDisabled];
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[_doneButton setTitleColor:tzImagePickerVc.oKButtonTitleColorNormal forState:UIControlStateNormal];
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[_doneButton setTitleColor:tzImagePickerVc.oKButtonTitleColorDisabled forState:UIControlStateDisabled];
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_doneButton.enabled = tzImagePickerVc.selectedModels.count || tzImagePickerVc.alwaysEnableDoneBtn;
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_numberImageView = [[UIImageView alloc] initWithImage:tzImagePickerVc.photoNumberIconImage];
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_numberImageView.hidden = tzImagePickerVc.selectedModels.count <= 0;
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_numberImageView.clipsToBounds = YES;
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_numberImageView.contentMode = UIViewContentModeScaleAspectFit;
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_numberImageView.backgroundColor = [UIColor clearColor];
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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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_divideLine = [[UIView alloc] init];
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CGFloat rgb2 = 222 / 255.0;
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_divideLine.backgroundColor = [UIColor colorWithRed:rgb2 green:rgb2 blue:rgb2 alpha:1.0];
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[_bottomToolBar addSubview:_divideLine];
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[_bottomToolBar addSubview:_previewButton];
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[_bottomToolBar addSubview:_doneButton];
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[_bottomToolBar addSubview:_numberImageView];
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[_bottomToolBar addSubview:_numberLabel];
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[_bottomToolBar addSubview:_originalPhotoButton];
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[self.view addSubview:_bottomToolBar];
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[_originalPhotoButton addSubview:_originalPhotoLabel];
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if (tzImagePickerVc.photoPickerPageUIConfigBlock) {
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tzImagePickerVc.photoPickerPageUIConfigBlock(_collectionView, _bottomToolBar, _previewButton, _originalPhotoButton, _originalPhotoLabel, _doneButton, _numberImageView, _numberLabel, _divideLine);
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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 top = 0;
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CGFloat collectionViewHeight = 0;
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CGFloat naviBarHeight = self.navigationController.navigationBar.tz_height;
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BOOL isStatusBarHidden = [UIApplication sharedApplication].isStatusBarHidden;
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CGFloat toolBarHeight = [TZCommonTools tz_isIPhoneX] ? 50 + (83 - 49) : 50;
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if (self.navigationController.navigationBar.isTranslucent) {
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top = naviBarHeight;
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if (iOS7Later && !isStatusBarHidden) top += [TZCommonTools tz_statusBarHeight];
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collectionViewHeight = tzImagePickerVc.showSelectBtn ? self.view.tz_height - toolBarHeight - top : self.view.tz_height - top;;
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} else {
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collectionViewHeight = tzImagePickerVc.showSelectBtn ? self.view.tz_height - toolBarHeight : self.view.tz_height;
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}
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_collectionView.frame = CGRectMake(0, top, self.view.tz_width, collectionViewHeight);
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CGFloat itemWH = (self.view.tz_width - (self.columnNumber + 1) * itemMargin) / self.columnNumber;
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_layout.itemSize = CGSizeMake(itemWH, itemWH);
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_layout.minimumInteritemSpacing = itemMargin;
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_layout.minimumLineSpacing = itemMargin;
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[_collectionView setCollectionViewLayout:_layout];
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if (_offsetItemCount > 0) {
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CGFloat offsetY = _offsetItemCount * (_layout.itemSize.height + _layout.minimumLineSpacing);
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[_collectionView setContentOffset:CGPointMake(0, offsetY)];
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}
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CGFloat toolBarTop = 0;
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if (!self.navigationController.navigationBar.isHidden) {
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toolBarTop = self.view.tz_height - toolBarHeight;
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} else {
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CGFloat navigationHeight = naviBarHeight;
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if (iOS7Later) navigationHeight += [TZCommonTools tz_statusBarHeight];
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toolBarTop = self.view.tz_height - toolBarHeight - navigationHeight;
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}
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_bottomToolBar.frame = CGRectMake(0, toolBarTop, self.view.tz_width, toolBarHeight);
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CGFloat previewWidth = [tzImagePickerVc.previewBtnTitleStr tz_calculateSizeWithAttributes:@{NSFontAttributeName:[UIFont systemFontOfSize:16]} maxSize:CGSizeMake(CGFLOAT_MAX, CGFLOAT_MAX)].width + 2;
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if (!tzImagePickerVc.allowPreview) {
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previewWidth = 0.0;
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}
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_previewButton.frame = CGRectMake(10, 3, previewWidth, 44);
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_previewButton.tz_width = !tzImagePickerVc.showSelectBtn ? 0 : previewWidth;
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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(CGRectGetMaxX(_previewButton.frame), 0, fullImageWidth + 56, 50);
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_originalPhotoLabel.frame = CGRectMake(fullImageWidth + 46, 0, 80, 50);
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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, 50);
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_numberImageView.frame = CGRectMake(_doneButton.tz_left - 24 - 5, 13, 24, 24);
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_numberLabel.frame = _numberImageView.frame;
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_divideLine.frame = CGRectMake(0, 0, self.view.tz_width, 1);
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[TZImageManager manager].columnNumber = [TZImageManager manager].columnNumber;
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[self.collectionView reloadData];
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if (tzImagePickerVc.photoPickerPageDidLayoutSubviewsBlock) {
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tzImagePickerVc.photoPickerPageDidLayoutSubviewsBlock(_collectionView, _bottomToolBar, _previewButton, _originalPhotoButton, _originalPhotoLabel, _doneButton, _numberImageView, _numberLabel, _divideLine);
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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.y / (_layout.itemSize.height + _layout.minimumLineSpacing);
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}
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#pragma mark - Click Event
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- (void)navLeftBarButtonClick{
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[self.navigationController popViewControllerAnimated:YES];
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}
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- (void)previewButtonClick {
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TZPhotoPreviewController *photoPreviewVc = [[TZPhotoPreviewController alloc] init];
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[self pushPhotoPrevireViewController:photoPreviewVc needCheckSelectedModels:YES];
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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 getSelectedPhotoBytes];
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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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// 1.6.8 判断是否满足最小必选张数的限制
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if (tzImagePickerVc.minImagesCount && tzImagePickerVc.selectedModels.count < tzImagePickerVc.minImagesCount) {
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NSString *title = [NSString stringWithFormat:[NSBundle tz_localizedStringForKey:@"Select a minimum of %zd photos"], tzImagePickerVc.minImagesCount];
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[tzImagePickerVc showAlertWithTitle:title];
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return;
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}
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[tzImagePickerVc showProgressHUD];
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NSMutableArray *assets = [NSMutableArray array];
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NSMutableArray *photos;
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NSMutableArray *infoArr;
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if (tzImagePickerVc.onlyReturnAsset) { // not fetch image
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for (NSInteger i = 0; i < tzImagePickerVc.selectedModels.count; i++) {
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TZAssetModel *model = tzImagePickerVc.selectedModels[i];
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[assets addObject:model.asset];
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}
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} else { // fetch image
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photos = [NSMutableArray array];
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infoArr = [NSMutableArray array];
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for (NSInteger i = 0; i < tzImagePickerVc.selectedModels.count; i++) { [photos addObject:@1];[assets addObject:@1];[infoArr addObject:@1]; }
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__block BOOL havenotShowAlert = YES;
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[TZImageManager manager].shouldFixOrientation = YES;
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__block id alertView;
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for (NSInteger i = 0; i < tzImagePickerVc.selectedModels.count; i++) {
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TZAssetModel *model = tzImagePickerVc.selectedModels[i];
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[[TZImageManager manager] getPhotoWithAsset:model.asset completion:^(UIImage *photo, NSDictionary *info, BOOL isDegraded) {
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if (isDegraded) return;
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if (photo) {
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photo = [[TZImageManager manager] scaleImage:photo toSize:CGSizeMake(tzImagePickerVc.photoWidth, (int)(tzImagePickerVc.photoWidth * photo.size.height / photo.size.width))];
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[photos replaceObjectAtIndex:i withObject:photo];
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}
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if (info) [infoArr replaceObjectAtIndex:i withObject:info];
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[assets replaceObjectAtIndex:i withObject:model.asset];
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for (id item in photos) { if ([item isKindOfClass:[NSNumber class]]) return; }
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if (havenotShowAlert) {
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[tzImagePickerVc hideAlertView:alertView];
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[self didGetAllPhotos:photos assets:assets infoArr:infoArr];
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}
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} progressHandler:^(double progress, NSError *error, BOOL *stop, NSDictionary *info) {
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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 < 1 && havenotShowAlert && !alertView) {
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[tzImagePickerVc hideProgressHUD];
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alertView = [tzImagePickerVc showAlertWithTitle:[NSBundle tz_localizedStringForKey:@"Synchronizing photos from iCloud"]];
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havenotShowAlert = NO;
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return;
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}
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if (progress >= 1) {
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havenotShowAlert = YES;
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}
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} networkAccessAllowed:YES];
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}
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}
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if (tzImagePickerVc.selectedModels.count <= 0 || tzImagePickerVc.onlyReturnAsset) {
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[self didGetAllPhotos:photos assets:assets infoArr:infoArr];
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}
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}
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- (void)didGetAllPhotos:(NSArray *)photos assets:(NSArray *)assets infoArr:(NSArray *)infoArr {
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TZImagePickerController *tzImagePickerVc = (TZImagePickerController *)self.navigationController;
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[tzImagePickerVc hideProgressHUD];
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if (tzImagePickerVc.autoDismiss) {
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[self.navigationController dismissViewControllerAnimated:YES completion:^{
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[self callDelegateMethodWithPhotos:photos assets:assets infoArr:infoArr];
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}];
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} else {
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[self callDelegateMethodWithPhotos:photos assets:assets infoArr:infoArr];
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}
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}
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- (void)callDelegateMethodWithPhotos:(NSArray *)photos assets:(NSArray *)assets infoArr:(NSArray *)infoArr {
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TZImagePickerController *tzImagePickerVc = (TZImagePickerController *)self.navigationController;
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if (!tzImagePickerVc.allowPickingImage && tzImagePickerVc.allowPickingVideo && tzImagePickerVc.maxImagesCount == 1) {
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if ([tzImagePickerVc.pickerDelegate respondsToSelector:@selector(imagePickerController:didFinishPickingVideo:sourceAssets:)]) {
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[tzImagePickerVc.pickerDelegate imagePickerController:tzImagePickerVc didFinishPickingVideo:[photos firstObject] sourceAssets:[assets firstObject]];
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}
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if (tzImagePickerVc.didFinishPickingVideoHandle) {
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tzImagePickerVc.didFinishPickingVideoHandle([photos firstObject], [assets firstObject]);
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}
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return;
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}
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if ([tzImagePickerVc.pickerDelegate respondsToSelector:@selector(imagePickerController:didFinishPickingPhotos:sourceAssets:isSelectOriginalPhoto:)]) {
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[tzImagePickerVc.pickerDelegate imagePickerController:tzImagePickerVc didFinishPickingPhotos:photos sourceAssets:assets isSelectOriginalPhoto:_isSelectOriginalPhoto];
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}
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if ([tzImagePickerVc.pickerDelegate respondsToSelector:@selector(imagePickerController:didFinishPickingPhotos:sourceAssets:isSelectOriginalPhoto:infos:)]) {
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[tzImagePickerVc.pickerDelegate imagePickerController:tzImagePickerVc didFinishPickingPhotos:photos sourceAssets:assets isSelectOriginalPhoto:_isSelectOriginalPhoto infos:infoArr];
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}
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if (tzImagePickerVc.didFinishPickingPhotosHandle) {
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tzImagePickerVc.didFinishPickingPhotosHandle(photos,assets,_isSelectOriginalPhoto);
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}
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if (tzImagePickerVc.didFinishPickingPhotosWithInfosHandle) {
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tzImagePickerVc.didFinishPickingPhotosWithInfosHandle(photos,assets,_isSelectOriginalPhoto,infoArr);
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}
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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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if (_showTakePhotoBtn) {
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return _models.count + 1;
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}
|
return _models.count;
|
}
|
|
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath {
|
// the cell lead to take a picture / 去拍照的cell
|
TZImagePickerController *tzImagePickerVc = (TZImagePickerController *)self.navigationController;
|
if (((tzImagePickerVc.sortAscendingByModificationDate && indexPath.item >= _models.count) || (!tzImagePickerVc.sortAscendingByModificationDate && indexPath.item == 0)) && _showTakePhotoBtn) {
|
TZAssetCameraCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"TZAssetCameraCell" forIndexPath:indexPath];
|
cell.imageView.image = tzImagePickerVc.takePictureImage;
|
if ([tzImagePickerVc.takePictureImageName isEqualToString:@"takePicture80"]) {
|
cell.imageView.contentMode = UIViewContentModeCenter;
|
CGFloat rgb = 223 / 255.0;
|
cell.imageView.backgroundColor = [UIColor colorWithRed:rgb green:rgb blue:rgb alpha:1.0];
|
} else {
|
cell.imageView.backgroundColor = [UIColor colorWithWhite:1.000 alpha:0.500];
|
}
|
return cell;
|
}
|
// the cell dipaly photo or video / 展示照片或视频的cell
|
TZAssetCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"TZAssetCell" forIndexPath:indexPath];
|
cell.allowPickingMultipleVideo = tzImagePickerVc.allowPickingMultipleVideo;
|
cell.photoDefImage = tzImagePickerVc.photoDefImage;
|
cell.photoSelImage = tzImagePickerVc.photoSelImage;
|
cell.useCachedImage = self.useCachedImage;
|
cell.assetCellDidSetModelBlock = tzImagePickerVc.assetCellDidSetModelBlock;
|
cell.assetCellDidLayoutSubviewsBlock = tzImagePickerVc.assetCellDidLayoutSubviewsBlock;
|
TZAssetModel *model;
|
if (tzImagePickerVc.sortAscendingByModificationDate || !_showTakePhotoBtn) {
|
model = _models[indexPath.item];
|
} else {
|
model = _models[indexPath.item - 1];
|
}
|
cell.allowPickingGif = tzImagePickerVc.allowPickingGif;
|
cell.model = model;
|
if (model.isSelected && tzImagePickerVc.showSelectedIndex) {
|
NSString *assetId = [[TZImageManager manager] getAssetIdentifier:model.asset];
|
cell.index = [tzImagePickerVc.selectedAssetIds indexOfObject:assetId] + 1;
|
}
|
cell.showSelectBtn = tzImagePickerVc.showSelectBtn;
|
cell.allowPreview = tzImagePickerVc.allowPreview;
|
|
if (tzImagePickerVc.selectedModels.count >= tzImagePickerVc.maxImagesCount && tzImagePickerVc.showPhotoCannotSelectLayer && !model.isSelected) {
|
cell.cannotSelectLayerButton.backgroundColor = tzImagePickerVc.cannotSelectLayerColor;
|
cell.cannotSelectLayerButton.hidden = NO;
|
} else {
|
cell.cannotSelectLayerButton.hidden = YES;
|
}
|
|
__weak typeof(cell) weakCell = cell;
|
__weak typeof(self) weakSelf = self;
|
__weak typeof(_numberImageView.layer) weakLayer = _numberImageView.layer;
|
cell.didSelectPhotoBlock = ^(BOOL isSelected) {
|
__strong typeof(weakCell) strongCell = weakCell;
|
__strong typeof(weakSelf) strongSelf = weakSelf;
|
__strong typeof(weakLayer) strongLayer = weakLayer;
|
TZImagePickerController *tzImagePickerVc = (TZImagePickerController *)strongSelf.navigationController;
|
// 1. cancel select / 取消选择
|
if (isSelected) {
|
strongCell.selectPhotoButton.selected = NO;
|
model.isSelected = NO;
|
NSArray *selectedModels = [NSArray arrayWithArray:tzImagePickerVc.selectedModels];
|
for (TZAssetModel *model_item in selectedModels) {
|
if ([[[TZImageManager manager] getAssetIdentifier:model.asset] isEqualToString:[[TZImageManager manager] getAssetIdentifier:model_item.asset]]) {
|
[tzImagePickerVc removeSelectedModel:model_item];
|
break;
|
}
|
}
|
[strongSelf refreshBottomToolBarStatus];
|
if (tzImagePickerVc.showSelectedIndex || tzImagePickerVc.showPhotoCannotSelectLayer) {
|
[strongSelf setUseCachedImageAndReloadData];
|
}
|
[UIView showOscillatoryAnimationWithLayer:strongLayer type:TZOscillatoryAnimationToSmaller];
|
} else {
|
// 2. select:check if over the maxImagesCount / 选择照片,检查是否超过了最大个数的限制
|
if (tzImagePickerVc.selectedModels.count < tzImagePickerVc.maxImagesCount) {
|
strongCell.selectPhotoButton.selected = YES;
|
model.isSelected = YES;
|
if (tzImagePickerVc.showSelectedIndex || tzImagePickerVc.showPhotoCannotSelectLayer) {
|
model.needOscillatoryAnimation = YES;
|
[strongSelf setUseCachedImageAndReloadData];
|
}
|
[tzImagePickerVc addSelectedModel:model];
|
[strongSelf refreshBottomToolBarStatus];
|
[UIView showOscillatoryAnimationWithLayer:strongLayer type:TZOscillatoryAnimationToSmaller];
|
} else {
|
NSString *title = [NSString stringWithFormat:[NSBundle tz_localizedStringForKey:@"Select a maximum of %zd photos"], tzImagePickerVc.maxImagesCount];
|
[tzImagePickerVc showAlertWithTitle:title];
|
}
|
}
|
};
|
return cell;
|
}
|
|
- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath {
|
// take a photo / 去拍照
|
TZImagePickerController *tzImagePickerVc = (TZImagePickerController *)self.navigationController;
|
if (((tzImagePickerVc.sortAscendingByModificationDate && indexPath.item >= _models.count) || (!tzImagePickerVc.sortAscendingByModificationDate && indexPath.item == 0)) && _showTakePhotoBtn) {
|
[self takePhoto]; return;
|
}
|
// preview phote or video / 预览照片或视频
|
NSInteger index = indexPath.item;
|
if (!tzImagePickerVc.sortAscendingByModificationDate && _showTakePhotoBtn) {
|
index = indexPath.item - 1;
|
}
|
TZAssetModel *model = _models[index];
|
if (model.type == TZAssetModelMediaTypeVideo && !tzImagePickerVc.allowPickingMultipleVideo) {
|
if (tzImagePickerVc.selectedModels.count > 0) {
|
TZImagePickerController *imagePickerVc = (TZImagePickerController *)self.navigationController;
|
[imagePickerVc showAlertWithTitle:[NSBundle tz_localizedStringForKey:@"Can not choose both video and photo"]];
|
} else {
|
TZVideoPlayerController *videoPlayerVc = [[TZVideoPlayerController alloc] init];
|
videoPlayerVc.model = model;
|
[self.navigationController pushViewController:videoPlayerVc animated:YES];
|
}
|
} else if (model.type == TZAssetModelMediaTypePhotoGif && tzImagePickerVc.allowPickingGif && !tzImagePickerVc.allowPickingMultipleVideo) {
|
if (tzImagePickerVc.selectedModels.count > 0) {
|
TZImagePickerController *imagePickerVc = (TZImagePickerController *)self.navigationController;
|
[imagePickerVc showAlertWithTitle:[NSBundle tz_localizedStringForKey:@"Can not choose both photo and GIF"]];
|
} else {
|
TZGifPhotoPreviewController *gifPreviewVc = [[TZGifPhotoPreviewController alloc] init];
|
gifPreviewVc.model = model;
|
[self.navigationController pushViewController:gifPreviewVc animated:YES];
|
}
|
} else {
|
TZPhotoPreviewController *photoPreviewVc = [[TZPhotoPreviewController alloc] init];
|
photoPreviewVc.currentIndex = index;
|
photoPreviewVc.models = _models;
|
[self pushPhotoPrevireViewController:photoPreviewVc];
|
}
|
}
|
|
#pragma mark - UIScrollViewDelegate
|
|
- (void)scrollViewDidScroll:(UIScrollView *)scrollView {
|
if (iOS8Later) {
|
// [self updateCachedAssets];
|
}
|
}
|
|
#pragma mark - Private Method
|
|
- (void)setUseCachedImageAndReloadData {
|
self.useCachedImage = YES;
|
[self.collectionView reloadData];
|
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.1 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
|
self.useCachedImage = NO;
|
});
|
}
|
|
/// 拍照按钮点击事件
|
- (void)takePhoto {
|
AVAuthorizationStatus authStatus = [AVCaptureDevice authorizationStatusForMediaType:AVMediaTypeVideo];
|
if ((authStatus == AVAuthorizationStatusRestricted || authStatus ==AVAuthorizationStatusDenied) && iOS7Later) {
|
|
NSDictionary *infoDict = [TZCommonTools tz_getInfoDictionary];
|
// 无权限 做一个友好的提示
|
NSString *appName = [infoDict valueForKey:@"CFBundleDisplayName"];
|
if (!appName) appName = [infoDict valueForKey:@"CFBundleName"];
|
|
NSString *message = [NSString stringWithFormat:[NSBundle tz_localizedStringForKey:@"Please allow %@ to access your camera in \"Settings -> Privacy -> Camera\""],appName];
|
if (iOS8Later) {
|
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:[NSBundle tz_localizedStringForKey:@"Can not use camera"] message:message delegate:self cancelButtonTitle:[NSBundle tz_localizedStringForKey:@"Cancel"] otherButtonTitles:[NSBundle tz_localizedStringForKey:@"Setting"], nil];
|
[alert show];
|
} else {
|
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:[NSBundle tz_localizedStringForKey:@"Can not use camera"] message:message delegate:self cancelButtonTitle:[NSBundle tz_localizedStringForKey:@"OK"] otherButtonTitles:nil];
|
[alert show];
|
}
|
} else if (authStatus == AVAuthorizationStatusNotDetermined) {
|
// fix issue 466, 防止用户首次拍照拒绝授权时相机页黑屏
|
if (iOS7Later) {
|
[AVCaptureDevice requestAccessForMediaType:AVMediaTypeVideo completionHandler:^(BOOL granted) {
|
if (granted) {
|
dispatch_async(dispatch_get_main_queue(), ^{
|
[self pushImagePickerController];
|
});
|
}
|
}];
|
} else {
|
[self pushImagePickerController];
|
}
|
} else {
|
[self pushImagePickerController];
|
}
|
}
|
|
// 调用相机
|
- (void)pushImagePickerController {
|
// 提前定位
|
TZImagePickerController *tzImagePickerVc = (TZImagePickerController *)self.navigationController;
|
if (tzImagePickerVc.allowCameraLocation) {
|
__weak typeof(self) weakSelf = self;
|
[[TZLocationManager manager] startLocationWithSuccessBlock:^(NSArray<CLLocation *> *locations) {
|
__strong typeof(weakSelf) strongSelf = weakSelf;
|
strongSelf.location = [locations firstObject];
|
} failureBlock:^(NSError *error) {
|
__strong typeof(weakSelf) strongSelf = weakSelf;
|
strongSelf.location = nil;
|
}];
|
}
|
|
UIImagePickerControllerSourceType sourceType = UIImagePickerControllerSourceTypeCamera;
|
if ([UIImagePickerController isSourceTypeAvailable: sourceType]) {
|
self.imagePickerVc.sourceType = sourceType;
|
NSMutableArray *mediaTypes = [NSMutableArray array];
|
if (tzImagePickerVc.allowTakePicture) {
|
[mediaTypes addObject:(NSString *)kUTTypeImage];
|
}
|
if (tzImagePickerVc.allowTakeVideo) {
|
[mediaTypes addObject:(NSString *)kUTTypeMovie];
|
self.imagePickerVc.videoMaximumDuration = tzImagePickerVc.videoMaximumDuration;
|
}
|
self.imagePickerVc.mediaTypes= mediaTypes;
|
if (iOS8Later) {
|
_imagePickerVc.modalPresentationStyle = UIModalPresentationOverCurrentContext;
|
}
|
if (tzImagePickerVc.uiImagePickerControllerSettingBlock) {
|
tzImagePickerVc.uiImagePickerControllerSettingBlock(_imagePickerVc);
|
}
|
[self presentViewController:_imagePickerVc animated:YES completion:nil];
|
} else {
|
NSLog(@"模拟器中无法打开照相机,请在真机中使用");
|
}
|
}
|
|
- (void)refreshBottomToolBarStatus {
|
TZImagePickerController *tzImagePickerVc = (TZImagePickerController *)self.navigationController;
|
|
_previewButton.enabled = tzImagePickerVc.selectedModels.count > 0;
|
_doneButton.enabled = tzImagePickerVc.selectedModels.count > 0 || tzImagePickerVc.alwaysEnableDoneBtn;
|
|
_numberImageView.hidden = tzImagePickerVc.selectedModels.count <= 0;
|
_numberLabel.hidden = tzImagePickerVc.selectedModels.count <= 0;
|
_numberLabel.text = [NSString stringWithFormat:@"%zd",tzImagePickerVc.selectedModels.count];
|
|
_originalPhotoButton.enabled = tzImagePickerVc.selectedModels.count > 0;
|
_originalPhotoButton.selected = (_isSelectOriginalPhoto && _originalPhotoButton.enabled);
|
_originalPhotoLabel.hidden = (!_originalPhotoButton.isSelected);
|
if (_isSelectOriginalPhoto) [self getSelectedPhotoBytes];
|
}
|
|
- (void)pushPhotoPrevireViewController:(TZPhotoPreviewController *)photoPreviewVc {
|
[self pushPhotoPrevireViewController:photoPreviewVc needCheckSelectedModels:NO];
|
}
|
|
- (void)pushPhotoPrevireViewController:(TZPhotoPreviewController *)photoPreviewVc needCheckSelectedModels:(BOOL)needCheckSelectedModels {
|
__weak typeof(self) weakSelf = self;
|
photoPreviewVc.isSelectOriginalPhoto = _isSelectOriginalPhoto;
|
[photoPreviewVc setBackButtonClickBlock:^(BOOL isSelectOriginalPhoto) {
|
__strong typeof(weakSelf) strongSelf = weakSelf;
|
strongSelf.isSelectOriginalPhoto = isSelectOriginalPhoto;
|
if (needCheckSelectedModels) {
|
[strongSelf checkSelectedModels];
|
}
|
[strongSelf.collectionView reloadData];
|
[strongSelf refreshBottomToolBarStatus];
|
}];
|
[photoPreviewVc setDoneButtonClickBlock:^(BOOL isSelectOriginalPhoto) {
|
__strong typeof(weakSelf) strongSelf = weakSelf;
|
strongSelf.isSelectOriginalPhoto = isSelectOriginalPhoto;
|
[strongSelf doneButtonClick];
|
}];
|
[photoPreviewVc setDoneButtonClickBlockCropMode:^(UIImage *cropedImage, id asset) {
|
__strong typeof(weakSelf) strongSelf = weakSelf;
|
[strongSelf didGetAllPhotos:@[cropedImage] assets:@[asset] infoArr:nil];
|
}];
|
[self.navigationController pushViewController:photoPreviewVc animated:YES];
|
}
|
|
- (void)getSelectedPhotoBytes {
|
// 越南语 && 5屏幕时会显示不下，暂时这样处理
|
if ([[TZImagePickerConfig sharedInstance].preferredLanguage isEqualToString:@"vi"] && self.view.tz_width <= 320) {
|
return;
|
}
|
TZImagePickerController *imagePickerVc = (TZImagePickerController *)self.navigationController;
|
[[TZImageManager manager] getPhotosBytesWithArray:imagePickerVc.selectedModels completion:^(NSString *totalBytes) {
|
self->_originalPhotoLabel.text = [NSString stringWithFormat:@"(%@)",totalBytes];
|
}];
|
}
|
|
- (void)scrollCollectionViewToBottom {
|
TZImagePickerController *tzImagePickerVc = (TZImagePickerController *)self.navigationController;
|
if (_shouldScrollToBottom && _models.count > 0) {
|
NSInteger item = 0;
|
if (tzImagePickerVc.sortAscendingByModificationDate) {
|
item = _models.count - 1;
|
if (_showTakePhotoBtn) {
|
item += 1;
|
}
|
}
|
dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.01 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
|
[self->_collectionView scrollToItemAtIndexPath:[NSIndexPath indexPathForItem:item inSection:0] atScrollPosition:UICollectionViewScrollPositionBottom animated:NO];
|
self->_shouldScrollToBottom = NO;
|
self->_collectionView.hidden = NO;
|
});
|
} else {
|
_collectionView.hidden = NO;
|
}
|
}
|
|
- (void)checkSelectedModels {
|
NSMutableArray *selectedAssets = [NSMutableArray array];
|
TZImagePickerController *tzImagePickerVc = (TZImagePickerController *)self.navigationController;
|
for (TZAssetModel *model in tzImagePickerVc.selectedModels) {
|
[selectedAssets addObject:model.asset];
|
}
|
for (TZAssetModel *model in _models) {
|
model.isSelected = NO;
|
if ([[TZImageManager manager] isAssetsArray:selectedAssets containAsset:model.asset]) {
|
model.isSelected = YES;
|
}
|
}
|
}
|
|
#pragma mark - UIAlertViewDelegate
|
|
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex {
|
if (buttonIndex == 1) { // 去设置界面，开启相机访问权限
|
if (iOS8Later) {
|
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:UIApplicationOpenSettingsURLString]];
|
}
|
}
|
}
|
|
#pragma mark - UIImagePickerControllerDelegate
|
|
- (void)imagePickerController:(UIImagePickerController*)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
|
[picker dismissViewControllerAnimated:YES completion:nil];
|
NSString *type = [info objectForKey:UIImagePickerControllerMediaType];
|
if ([type isEqualToString:@"public.image"]) {
|
TZImagePickerController *imagePickerVc = (TZImagePickerController *)self.navigationController;
|
[imagePickerVc showProgressHUD];
|
UIImage *photo = [info objectForKey:UIImagePickerControllerOriginalImage];
|
if (photo) {
|
[[TZImageManager manager] savePhotoWithImage:photo location:self.location completion:^(NSError *error){
|
if (!error) {
|
[self reloadPhotoArrayWithMediaType:type];
|
}
|
}];
|
self.location = nil;
|
}
|
} else if ([type isEqualToString:@"public.movie"]) {
|
TZImagePickerController *imagePickerVc = (TZImagePickerController *)self.navigationController;
|
[imagePickerVc showProgressHUD];
|
NSURL *videoUrl = [info objectForKey:UIImagePickerControllerMediaURL];
|
if (videoUrl) {
|
[[TZImageManager manager] saveVideoWithUrl:videoUrl location:self.location completion:^(NSError *error) {
|
if (!error) {
|
[self reloadPhotoArrayWithMediaType:type];
|
}
|
}];
|
self.location = nil;
|
}
|
}
|
}
|
|
- (void)reloadPhotoArrayWithMediaType:(NSString *)mediaType {
|
TZImagePickerController *tzImagePickerVc = (TZImagePickerController *)self.navigationController;
|
[[TZImageManager manager] getCameraRollAlbum:tzImagePickerVc.allowPickingVideo allowPickingImage:tzImagePickerVc.allowPickingImage needFetchAssets:NO completion:^(TZAlbumModel *model) {
|
self->_model = model;
|
[[TZImageManager manager] getAssetsFromFetchResult:self->_model.result completion:^(NSArray<TZAssetModel *> *models) {
|
[tzImagePickerVc hideProgressHUD];
|
|
TZAssetModel *assetModel;
|
if (tzImagePickerVc.sortAscendingByModificationDate) {
|
assetModel = [models lastObject];
|
[self->_models addObject:assetModel];
|
} else {
|
assetModel = [models firstObject];
|
[self->_models insertObject:assetModel atIndex:0];
|
}
|
|
if (tzImagePickerVc.maxImagesCount <= 1) {
|
if (tzImagePickerVc.allowCrop) {
|
TZPhotoPreviewController *photoPreviewVc = [[TZPhotoPreviewController alloc] init];
|
if (tzImagePickerVc.sortAscendingByModificationDate) {
|
photoPreviewVc.currentIndex = self->_models.count - 1;
|
} else {
|
photoPreviewVc.currentIndex = 0;
|
}
|
photoPreviewVc.models = self->_models;
|
[self pushPhotoPrevireViewController:photoPreviewVc];
|
} else {
|
[tzImagePickerVc addSelectedModel:assetModel];
|
[self doneButtonClick];
|
}
|
return;
|
}
|
|
if (tzImagePickerVc.selectedModels.count < tzImagePickerVc.maxImagesCount) {
|
if ([mediaType isEqualToString:@"public.movie"] && !tzImagePickerVc.allowPickingMultipleVideo) {
|
// 不能多选视频的情况下，不选中拍摄的视频
|
} else {
|
assetModel.isSelected = YES;
|
[tzImagePickerVc addSelectedModel:assetModel];
|
[self refreshBottomToolBarStatus];
|
}
|
}
|
self->_collectionView.hidden = YES;
|
[self->_collectionView reloadData];
|
|
self->_shouldScrollToBottom = YES;
|
[self scrollCollectionViewToBottom];
|
}];
|
}];
|
}
|
|
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {
|
[picker dismissViewControllerAnimated:YES completion:nil];
|
}
|
|
- (void)dealloc {
|
// NSLog(@"%@ dealloc",NSStringFromClass(self.class));
|
}
|
|
#pragma mark - Asset Caching
|
|
- (void)resetCachedAssets {
|
[[TZImageManager manager].cachingImageManager stopCachingImagesForAllAssets];
|
self.previousPreheatRect = CGRectZero;
|
}
|
|
- (void)updateCachedAssets {
|
BOOL isViewVisible = [self isViewLoaded] && [[self view] window] != nil;
|
if (!isViewVisible) { return; }
|
|
// The preheat window is twice the height of the visible rect.
|
CGRect preheatRect = _collectionView.bounds;
|
preheatRect = CGRectInset(preheatRect, 0.0f, -0.5f * CGRectGetHeight(preheatRect));
|
|
/*
|
Check if the collection view is showing an area that is significantly
|
different to the last preheated area.
|
*/
|
CGFloat delta = ABS(CGRectGetMidY(preheatRect) - CGRectGetMidY(self.previousPreheatRect));
|
if (delta > CGRectGetHeight(_collectionView.bounds) / 3.0f) {
|
|
// Compute the assets to start caching and to stop caching.
|
NSMutableArray *addedIndexPaths = [NSMutableArray array];
|
NSMutableArray *removedIndexPaths = [NSMutableArray array];
|
|
[self computeDifferenceBetweenRect:self.previousPreheatRect andRect:preheatRect removedHandler:^(CGRect removedRect) {
|
NSArray *indexPaths = [self aapl_indexPathsForElementsInRect:removedRect];
|
[removedIndexPaths addObjectsFromArray:indexPaths];
|
} addedHandler:^(CGRect addedRect) {
|
NSArray *indexPaths = [self aapl_indexPathsForElementsInRect:addedRect];
|
[addedIndexPaths addObjectsFromArray:indexPaths];
|
}];
|
|
NSArray *assetsToStartCaching = [self assetsAtIndexPaths:addedIndexPaths];
|
NSArray *assetsToStopCaching = [self assetsAtIndexPaths:removedIndexPaths];
|
|
// Update the assets the PHCachingImageManager is caching.
|
[[TZImageManager manager].cachingImageManager startCachingImagesForAssets:assetsToStartCaching
|
targetSize:AssetGridThumbnailSize
|
contentMode:PHImageContentModeAspectFill
|
options:nil];
|
[[TZImageManager manager].cachingImageManager stopCachingImagesForAssets:assetsToStopCaching
|
targetSize:AssetGridThumbnailSize
|
contentMode:PHImageContentModeAspectFill
|
options:nil];
|
|
// Store the preheat rect to compare against in the future.
|
self.previousPreheatRect = preheatRect;
|
}
|
}
|
|
- (void)computeDifferenceBetweenRect:(CGRect)oldRect andRect:(CGRect)newRect removedHandler:(void (^)(CGRect removedRect))removedHandler addedHandler:(void (^)(CGRect addedRect))addedHandler {
|
if (CGRectIntersectsRect(newRect, oldRect)) {
|
CGFloat oldMaxY = CGRectGetMaxY(oldRect);
|
CGFloat oldMinY = CGRectGetMinY(oldRect);
|
CGFloat newMaxY = CGRectGetMaxY(newRect);
|
CGFloat newMinY = CGRectGetMinY(newRect);
|
|
if (newMaxY > oldMaxY) {
|
CGRect rectToAdd = CGRectMake(newRect.origin.x, oldMaxY, newRect.size.width, (newMaxY - oldMaxY));
|
addedHandler(rectToAdd);
|
}
|
|
if (oldMinY > newMinY) {
|
CGRect rectToAdd = CGRectMake(newRect.origin.x, newMinY, newRect.size.width, (oldMinY - newMinY));
|
addedHandler(rectToAdd);
|
}
|
|
if (newMaxY < oldMaxY) {
|
CGRect rectToRemove = CGRectMake(newRect.origin.x, newMaxY, newRect.size.width, (oldMaxY - newMaxY));
|
removedHandler(rectToRemove);
|
}
|
|
if (oldMinY < newMinY) {
|
CGRect rectToRemove = CGRectMake(newRect.origin.x, oldMinY, newRect.size.width, (newMinY - oldMinY));
|
removedHandler(rectToRemove);
|
}
|
} else {
|
addedHandler(newRect);
|
removedHandler(oldRect);
|
}
|
}
|
|
- (NSArray *)assetsAtIndexPaths:(NSArray *)indexPaths {
|
if (indexPaths.count == 0) { return nil; }
|
|
NSMutableArray *assets = [NSMutableArray arrayWithCapacity:indexPaths.count];
|
for (NSIndexPath *indexPath in indexPaths) {
|
if (indexPath.item < _models.count) {
|
TZAssetModel *model = _models[indexPath.item];
|
[assets addObject:model.asset];
|
}
|
}
|
|
return assets;
|
}
|
|
- (NSArray *)aapl_indexPathsForElementsInRect:(CGRect)rect {
|
NSArray *allLayoutAttributes = [_collectionView.collectionViewLayout layoutAttributesForElementsInRect:rect];
|
if (allLayoutAttributes.count == 0) { return nil; }
|
NSMutableArray *indexPaths = [NSMutableArray arrayWithCapacity:allLayoutAttributes.count];
|
for (UICollectionViewLayoutAttributes *layoutAttributes in allLayoutAttributes) {
|
NSIndexPath *indexPath = layoutAttributes.indexPath;
|
[indexPaths addObject:indexPath];
|
}
|
return indexPaths;
|
}
|
#pragma clang diagnostic pop
|
|
@end
|
|
|
|
@implementation TZCollectionView
|
|
- (BOOL)touchesShouldCancelInContentView:(UIView *)view {
|
if ([view isKindOfClass:[UIControl class]]) {
|
return YES;
|
}
|
return [super touchesShouldCancelInContentView:view];
|
}
|
|
@end
|
