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TZPhotoPreviewCell.m
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TZPhotoPreviewCell.m
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//
// TZPhotoPreviewCell.m
// TZImagePickerController
//
// Created by 谭真 on 15/12/24.
// Copyright © 2015年 谭真. All rights reserved.
//
#import "TZPhotoPreviewCell.h"
#import "TZAssetModel.h"
#import "UIView+Layout.h"
#import "TZImageManager.h"
#import "TZProgressView.h"
#import "TZImageCropManager.h"
#import <MediaPlayer/MediaPlayer.h>
#import "TZImagePickerController.h"
@implementation TZAssetPreviewCell
- (instancetype)initWithFrame:(CGRect)frame {
self = [super initWithFrame:frame];
if (self) {
self.backgroundColor = [UIColor blackColor];
[self configSubviews];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(photoPreviewCollectionViewDidScroll) name:@"photoPreviewCollectionViewDidScroll" object:nil];
}
return self;
}
- (void)configSubviews {
}
#pragma mark - Notification
- (void)photoPreviewCollectionViewDidScroll {
}
- (void)dealloc {
[[NSNotificationCenter defaultCenter] removeObserver:self];
}
@end
@implementation TZPhotoPreviewCell
- (void)configSubviews {
self.previewView = [[TZPhotoPreviewView alloc] initWithFrame:CGRectZero];
__weak typeof(self) weakSelf = self;
[self.previewView setSingleTapGestureBlock:^{
__strong typeof(weakSelf) strongSelf = weakSelf;
if (strongSelf.singleTapGestureBlock) {
strongSelf.singleTapGestureBlock();
}
}];
[self.previewView setImageProgressUpdateBlock:^(double progress) {
__strong typeof(weakSelf) strongSelf = weakSelf;
if (strongSelf.imageProgressUpdateBlock) {
strongSelf.imageProgressUpdateBlock(progress);
}
}];
[self addSubview:self.previewView];
}
- (void)setModel:(TZAssetModel *)model {
[super setModel:model];
_previewView.asset = model.asset;
}
- (void)recoverSubviews {
[_previewView recoverSubviews];
}
- (void)setAllowCrop:(BOOL)allowCrop {
_allowCrop = allowCrop;
_previewView.allowCrop = allowCrop;
}
- (void)setCropRect:(CGRect)cropRect {
_cropRect = cropRect;
_previewView.cropRect = cropRect;
}
- (void)layoutSubviews {
[super layoutSubviews];
self.previewView.frame = self.bounds;
}
@end
@interface TZPhotoPreviewView ()<UIScrollViewDelegate>
@end
@implementation TZPhotoPreviewView
- (instancetype)initWithFrame:(CGRect)frame {
self = [super initWithFrame:frame];
if (self) {
_scrollView = [[UIScrollView alloc] init];
_scrollView.bouncesZoom = YES;
_scrollView.maximumZoomScale = 2.5;
_scrollView.minimumZoomScale = 1.0;
_scrollView.multipleTouchEnabled = YES;
_scrollView.delegate = self;
_scrollView.scrollsToTop = NO;
_scrollView.showsHorizontalScrollIndicator = NO;
_scrollView.showsVerticalScrollIndicator = YES;
_scrollView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
_scrollView.delaysContentTouches = NO;
_scrollView.canCancelContentTouches = YES;
_scrollView.alwaysBounceVertical = NO;
if (iOS11Later) {
_scrollView.contentInsetAdjustmentBehavior = UIScrollViewContentInsetAdjustmentNever;
}
[self addSubview:_scrollView];
_imageContainerView = [[UIView alloc] init];
_imageContainerView.clipsToBounds = YES;
_imageContainerView.contentMode = UIViewContentModeScaleAspectFill;
[_scrollView addSubview:_imageContainerView];
_imageView = [[UIImageView alloc] init];
_imageView.backgroundColor = [UIColor colorWithWhite:1.000 alpha:0.500];
_imageView.contentMode = UIViewContentModeScaleAspectFill;
_imageView.clipsToBounds = YES;
[_imageContainerView addSubview:_imageView];
UITapGestureRecognizer *tap1 = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(singleTap:)];
[self addGestureRecognizer:tap1];
UITapGestureRecognizer *tap2 = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(doubleTap:)];
tap2.numberOfTapsRequired = 2;
[tap1 requireGestureRecognizerToFail:tap2];
[self addGestureRecognizer:tap2];
[self configProgressView];
}
return self;
}
- (void)configProgressView {
_progressView = [[TZProgressView alloc] init];
_progressView.hidden = YES;
[self addSubview:_progressView];
}
- (void)setModel:(TZAssetModel *)model {
_model = model;
[_scrollView setZoomScale:1.0 animated:NO];
if (model.type == TZAssetModelMediaTypePhotoGif) {
// 先显示缩略图
[[TZImageManager manager] getPhotoWithAsset:model.asset completion:^(UIImage *photo, NSDictionary *info, BOOL isDegraded) {
self.imageView.image = photo;
[self resizeSubviews];
// 再显示gif动图
if (!isDegraded) {
[[TZImageManager manager] getOriginalPhotoDataWithAsset:model.asset progressHandler:^(double progress, NSError *error, BOOL *stop, NSDictionary *info) {
progress = progress > 0.02 ? progress : 0.02;
dispatch_async(dispatch_get_main_queue(), ^{
self.progressView.progress = progress;
if (progress >= 1) {
self.progressView.hidden = YES;
} else {
self.progressView.hidden = NO;
}
});
} completion:^(NSData *data, NSDictionary *info, BOOL isDegraded) {
if (!isDegraded) {
self.progressView.hidden = YES;
self.imageView.image = [UIImage sd_tz_animatedGIFWithData:data];
[self resizeSubviews];
}
}];
}
} progressHandler:nil networkAccessAllowed:NO];
} else {
self.asset = model.asset;
}
}
- (void)setAsset:(id)asset {
if (_asset && self.imageRequestID) {
[[PHImageManager defaultManager] cancelImageRequest:self.imageRequestID];
}
_asset = asset;
self.imageRequestID = [[TZImageManager manager] getPhotoWithAsset:asset completion:^(UIImage *photo, NSDictionary *info, BOOL isDegraded) {
if (![asset isEqual:self->_asset]) return;
self.imageView.image = photo;
[self resizeSubviews];
self->_progressView.hidden = YES;
if (self.imageProgressUpdateBlock) {
self.imageProgressUpdateBlock(1);
}
if (!isDegraded) {
self.imageRequestID = 0;
}
} progressHandler:^(double progress, NSError *error, BOOL *stop, NSDictionary *info) {
if (![asset isEqual:self->_asset]) return;
self->_progressView.hidden = NO;
[self bringSubviewToFront:self->_progressView];
progress = progress > 0.02 ? progress : 0.02;
self->_progressView.progress = progress;
if (self.imageProgressUpdateBlock && progress < 1) {
self.imageProgressUpdateBlock(progress);
}
if (progress >= 1) {
self->_progressView.hidden = YES;
self.imageRequestID = 0;
}
} networkAccessAllowed:YES];
}
- (void)recoverSubviews {
[_scrollView setZoomScale:1.0 animated:NO];
[self resizeSubviews];
}
- (void)resizeSubviews {
_imageContainerView.tz_origin = CGPointZero;
_imageContainerView.tz_width = self.scrollView.tz_width;
UIImage *image = _imageView.image;
if (image.size.height / image.size.width > self.tz_height / self.scrollView.tz_width) {
_imageContainerView.tz_height = floor(image.size.height / (image.size.width / self.scrollView.tz_width));
} else {
CGFloat height = image.size.height / image.size.width * self.scrollView.tz_width;
if (height < 1 || isnan(height)) height = self.tz_height;
height = floor(height);
_imageContainerView.tz_height = height;
_imageContainerView.tz_centerY = self.tz_height / 2;
}
if (_imageContainerView.tz_height > self.tz_height && _imageContainerView.tz_height - self.tz_height <= 1) {
_imageContainerView.tz_height = self.tz_height;
}
CGFloat contentSizeH = MAX(_imageContainerView.tz_height, self.tz_height);
_scrollView.contentSize = CGSizeMake(self.scrollView.tz_width, contentSizeH);
[_scrollView scrollRectToVisible:self.bounds animated:NO];
_scrollView.alwaysBounceVertical = _imageContainerView.tz_height <= self.tz_height ? NO : YES;
_imageView.frame = _imageContainerView.bounds;
[self refreshScrollViewContentSize];
}
- (void)setAllowCrop:(BOOL)allowCrop {
_allowCrop = allowCrop;
_scrollView.maximumZoomScale = allowCrop ? 4.0 : 2.5;
if ([self.asset isKindOfClass:[PHAsset class]]) {
PHAsset *phAsset = (PHAsset *)self.asset;
CGFloat aspectRatio = phAsset.pixelWidth / (CGFloat)phAsset.pixelHeight;
// 优化超宽图片的显示
if (aspectRatio > 1.5) {
self.scrollView.maximumZoomScale *= aspectRatio / 1.5;
}
}
}
- (void)refreshScrollViewContentSize {
if (_allowCrop) {
// 1.7.2 如果允许裁剪,需要让图片的任意部分都能在裁剪框内,于是对_scrollView做了如下处理:
// 1.让contentSize增大(裁剪框右下角的图片部分)
CGFloat contentWidthAdd = self.scrollView.tz_width - CGRectGetMaxX(_cropRect);
CGFloat contentHeightAdd = (MIN(_imageContainerView.tz_height, self.tz_height) - self.cropRect.size.height) / 2;
CGFloat newSizeW = self.scrollView.contentSize.width + contentWidthAdd;
CGFloat newSizeH = MAX(self.scrollView.contentSize.height, self.tz_height) + contentHeightAdd;
_scrollView.contentSize = CGSizeMake(newSizeW, newSizeH);
_scrollView.alwaysBounceVertical = YES;
// 2.让scrollView新增滑动区域(裁剪框左上角的图片部分)
if (contentHeightAdd > 0 || contentWidthAdd > 0) {
_scrollView.contentInset = UIEdgeInsetsMake(contentHeightAdd, _cropRect.origin.x, 0, 0);
} else {
_scrollView.contentInset = UIEdgeInsetsZero;
}
}
}
- (void)layoutSubviews {
[super layoutSubviews];
_scrollView.frame = CGRectMake(10, 0, self.tz_width - 20, self.tz_height);
static CGFloat progressWH = 40;
CGFloat progressX = (self.tz_width - progressWH) / 2;
CGFloat progressY = (self.tz_height - progressWH) / 2;
_progressView.frame = CGRectMake(progressX, progressY, progressWH, progressWH);
[self recoverSubviews];
}
#pragma mark - UITapGestureRecognizer Event
- (void)doubleTap:(UITapGestureRecognizer *)tap {
if (_scrollView.zoomScale > 1.0) {
_scrollView.contentInset = UIEdgeInsetsZero;
[_scrollView setZoomScale:1.0 animated:YES];
} else {
CGPoint touchPoint = [tap locationInView:self.imageView];
CGFloat newZoomScale = _scrollView.maximumZoomScale;
CGFloat xsize = self.frame.size.width / newZoomScale;
CGFloat ysize = self.frame.size.height / newZoomScale;
[_scrollView zoomToRect:CGRectMake(touchPoint.x - xsize/2, touchPoint.y - ysize/2, xsize, ysize) animated:YES];
}
}
- (void)singleTap:(UITapGestureRecognizer *)tap {
if (self.singleTapGestureBlock) {
self.singleTapGestureBlock();
}
}
#pragma mark - UIScrollViewDelegate
- (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView {
return _imageContainerView;
}
- (void)scrollViewWillBeginZooming:(UIScrollView *)scrollView withView:(UIView *)view {
scrollView.contentInset = UIEdgeInsetsZero;
}
- (void)scrollViewDidZoom:(UIScrollView *)scrollView {
[self refreshImageContainerViewCenter];
}
- (void)scrollViewDidEndZooming:(UIScrollView *)scrollView withView:(UIView *)view atScale:(CGFloat)scale {
[self refreshScrollViewContentSize];
}
#pragma mark - Private
- (void)refreshImageContainerViewCenter {
CGFloat offsetX = (_scrollView.tz_width > _scrollView.contentSize.width) ? ((_scrollView.tz_width - _scrollView.contentSize.width) * 0.5) : 0.0;
CGFloat offsetY = (_scrollView.tz_height > _scrollView.contentSize.height) ? ((_scrollView.tz_height - _scrollView.contentSize.height) * 0.5) : 0.0;
self.imageContainerView.center = CGPointMake(_scrollView.contentSize.width * 0.5 + offsetX, _scrollView.contentSize.height * 0.5 + offsetY);
}
@end
@implementation TZVideoPreviewCell
- (void)configSubviews {
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(pausePlayerAndShowNaviBar) name:UIApplicationWillResignActiveNotification object:nil];
}
- (void)configPlayButton {
if (_playButton) {
[_playButton removeFromSuperview];
}
_playButton = [UIButton buttonWithType:UIButtonTypeCustom];
[_playButton setImage:[UIImage imageNamedFromMyBundle:@"MMVideoPreviewPlay"] forState:UIControlStateNormal];
[_playButton setImage:[UIImage imageNamedFromMyBundle:@"MMVideoPreviewPlayHL"] forState:UIControlStateHighlighted];
[_playButton addTarget:self action:@selector(playButtonClick) forControlEvents:UIControlEventTouchUpInside];
[self addSubview:_playButton];
}
- (void)setModel:(TZAssetModel *)model {
[super setModel:model];
[self configMoviePlayer];
}
- (void)configMoviePlayer {
if (_player) {
[_playerLayer removeFromSuperlayer];
_playerLayer = nil;
[_player pause];
_player = nil;
}
[[TZImageManager manager] getPhotoWithAsset:self.model.asset completion:^(UIImage *photo, NSDictionary *info, BOOL isDegraded) {
self->_cover = photo;
}];
[[TZImageManager manager] getVideoWithAsset:self.model.asset completion:^(AVPlayerItem *playerItem, NSDictionary *info) {
dispatch_async(dispatch_get_main_queue(), ^{
self->_player = [AVPlayer playerWithPlayerItem:playerItem];
self->_playerLayer = [AVPlayerLayer playerLayerWithPlayer:self->_player];
self->_playerLayer.backgroundColor = [UIColor blackColor].CGColor;
self->_playerLayer.frame = self.bounds;
[self.layer addSublayer:self->_playerLayer];
[self configPlayButton];
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(pausePlayerAndShowNaviBar) name:AVPlayerItemDidPlayToEndTimeNotification object:self->_player.currentItem];
});
}];
}
- (void)layoutSubviews {
[super layoutSubviews];
_playerLayer.frame = self.bounds;
_playButton.frame = CGRectMake(0, 64, self.tz_width, self.tz_height - 64 - 44);
}
- (void)photoPreviewCollectionViewDidScroll {
[self pausePlayerAndShowNaviBar];
}
#pragma mark - Click Event
- (void)playButtonClick {
CMTime currentTime = _player.currentItem.currentTime;
CMTime durationTime = _player.currentItem.duration;
if (_player.rate == 0.0f) {
if (currentTime.value == durationTime.value) [_player.currentItem seekToTime:CMTimeMake(0, 1)];
[_player play];
[_playButton setImage:nil forState:UIControlStateNormal];
if (iOS7Later) [UIApplication sharedApplication].statusBarHidden = YES;
if (self.singleTapGestureBlock) {
self.singleTapGestureBlock();
}
} else {
[self pausePlayerAndShowNaviBar];
}
}
- (void)pausePlayerAndShowNaviBar {
if (_player.rate != 0.0) {
[_player pause];
[_playButton setImage:[UIImage imageNamedFromMyBundle:@"MMVideoPreviewPlay"] forState:UIControlStateNormal];
if (self.singleTapGestureBlock) {
self.singleTapGestureBlock();
}
}
}
@end
@implementation TZGifPreviewCell
- (void)configSubviews {
[self configPreviewView];
}
- (void)configPreviewView {
_previewView = [[TZPhotoPreviewView alloc] initWithFrame:CGRectZero];
__weak typeof(self) weakSelf = self;
[_previewView setSingleTapGestureBlock:^{
__strong typeof(weakSelf) strongSelf = weakSelf;
[strongSelf signleTapAction];
}];
[self addSubview:_previewView];
}
- (void)setModel:(TZAssetModel *)model {
[super setModel:model];
_previewView.model = self.model;
}
- (void)layoutSubviews {
[super layoutSubviews];
_previewView.frame = self.bounds;
}
#pragma mark - Click Event
- (void)signleTapAction {
if (self.singleTapGestureBlock) {
self.singleTapGestureBlock();
}
}
@end