SDJK_iOS/SDJK/Modules/OtherModule/ExerciseModule/View/RQExerciseQuestionCell.m

//
//  RQExerciseQuestionCell.m
//  SDJK
//
//  Created by 张嵘 on 2021/8/16.
//

#import "RQExerciseQuestionCell.h"

@interface RQExerciseQuestionCell () <QMUIImagePreviewViewDelegate>
@property  (nonatomic, readwrite, strong) RQExerciseQuestionItemViewModel *viewModel;
@property (weak, nonatomic) IBOutlet YYLabel *questionLabel;
@property (weak, nonatomic) IBOutlet UIImageView *questionImageView;
@property (nonatomic, readwrite, strong) QMUIImagePreviewViewController *imagePreviewViewController;
@property (weak, nonatomic) IBOutlet NSLayoutConstraint *labelHeight;
@property (weak, nonatomic) IBOutlet NSLayoutConstraint *imageViewHeight;

@end

@implementation RQExerciseQuestionCell
#pragma mark - PublicMethods
+ (instancetype)cellWithTableView:(UITableView *)tableView {
    static NSString *ID = @"RQExerciseQuestionCell";
    RQExerciseQuestionCell *cell = [tableView dequeueReusableCellWithIdentifier:ID];
    if (!cell) {
        cell = [self rq_viewFromXib];
        cell.selectionStyle = UITableViewCellSelectionStyleNone;
    }
    return cell;
}

- (void)dealloc {
}

- (void)bindViewModel:(RQExerciseQuestionItemViewModel *)viewModel {
    @weakify(self)
    _viewModel = viewModel;

    self.questionLabel.attributedText = viewModel.qusetionString;
    self.labelHeight.constant = viewModel.labelHeight;
    if (RQStringIsEmpty(viewModel.imageString)) {
        self.questionImageView.hidden = YES;
    } else {
        self.questionImageView.hidden = NO;
        self.imageViewHeight.constant = viewModel.imageHeight;
        self.questionImageView.qmui_smoothAnimation = YES;
        dispatch_async(dispatch_get_global_queue(0, 0), ^{
            @strongify(self)
            [self.questionImageView yy_setImageWithURL:[NSURL URLWithString:viewModel.imageString] placeholder:RQWebImagePlaceholder() options:RQWebImageOptionAutomatic completion:^(UIImage * _Nullable image, NSURL * _Nonnull url, YYWebImageFromType from, YYWebImageStage stage, NSError * _Nullable error) {
                @strongify(self)
                if ([url.path containsString:@".gif"] ) {
                    image = [UIImage qmui_animatedImageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:_viewModel.imageString]]];
                }
                //通知主线程刷新
                dispatch_async(dispatch_get_main_queue(), ^{
                    @strongify(self)
                    //回调或者说是通知主线程刷新
                    self.questionImageView.image = image;
                });
            }];
        });
        
        
//        [self.questionImageView yy_setImageWithURL:[NSURL URLWithString:viewModel.imageString] placeholder:RQWebImagePlaceholder() options:RQWebImageOptionAutomatic completion:^(UIImage * _Nullable image, NSURL * _Nonnull url, YYWebImageFromType from, YYWebImageStage stage, NSError * _Nullable error) {
//            @strongify(self)
//            if ([url.path containsString:@".gif"] ) {
//                image = [UIImage qmui_animatedImageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:_viewModel.imageString]]];
//            }
//            dispatch_async(dispatch_get_main_queue(), ^{
//                self.questionImageView.image = image;
//            });
//        }];
        
        [self.questionImageView setTapActionWithBlock:^(UITapGestureRecognizer *tap) {
            @strongify(self)
            [RQControllerHelper.currentViewController presentViewController:self.imagePreviewViewController animated:YES completion:nil];
        }];
    }
}

#pragma mark - SystemMethods
- (void)awakeFromNib {
    [super awakeFromNib];
    // Initialization code
}

- (void)setSelected:(BOOL)selected animated:(BOOL)animated {
    [super setSelected:selected animated:animated];

    // Configure the view for the selected state
}

#pragma mark - LazyLoad
- (QMUIImagePreviewViewController *)imagePreviewViewController {
    if (!_imagePreviewViewController) {
        _imagePreviewViewController = [[QMUIImagePreviewViewController alloc] init];
        _imagePreviewViewController.presentingStyle = QMUIImagePreviewViewControllerTransitioningStyleZoom;// 将 present 动画改为 zoom，也即从某个位置放大到屏幕中央。默认样式为 fade。
        _imagePreviewViewController.imagePreviewView.delegate = self;// 将内部的图片查看器 delegate 指向当前 viewController，以获取要查看的图片数据
        // 当需要在退出大图预览时做一些事情的时候，可配合 UIViewController (QMUI) 的 qmui_visibleStateDidChangeBlock 来实现。
        _imagePreviewViewController.qmui_visibleStateDidChangeBlock = ^(QMUIImagePreviewViewController *viewController, QMUIViewControllerVisibleState visibleState) {
            if (visibleState == QMUIViewControllerWillDisappear) {
//                NSInteger exitAtIndex = viewController.imagePreviewView.currentImageIndex;
            }
        };
    }
    return _imagePreviewViewController;
}

#pragma mark - <QMUIImagePreviewViewDelegate>
- (NSUInteger)numberOfImagesInImagePreviewView:(QMUIImagePreviewView *)imagePreviewView {
    return 1;
}

- (void)imagePreviewView:(QMUIImagePreviewView *)imagePreviewView renderZoomImageView:(QMUIZoomImageView *)zoomImageView atIndex:(NSUInteger)index {
    zoomImageView.reusedIdentifier = @(index);
    
    // 模拟异步加载的情况
    if (index == 2) {
        [zoomImageView showLoading];
        dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(1.0 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
            if ([zoomImageView.reusedIdentifier isEqual:@(index)]) {
                [zoomImageView hideEmptyView];
                zoomImageView.image = self.questionImageView.image;
                zoomImageView.contentMode = UIViewContentModeScaleAspectFill;
                zoomImageView.maximumZoomScale = 3.f;
            }
        });
    } else {
        zoomImageView.image = self.questionImageView.image;
    }
}

- (QMUIImagePreviewMediaType)imagePreviewView:(QMUIImagePreviewView *)imagePreviewView assetTypeAtIndex:(NSUInteger)index {
    return QMUIImagePreviewMediaTypeImage;
}

#pragma mark - <QMUIZoomImageViewDelegate>

- (void)singleTouchInZoomingImageView:(QMUIZoomImageView *)zoomImageView location:(CGPoint)location {
    // 退出图片预览
    [RQControllerHelper.currentViewController dismissViewControllerAnimated:YES completion:^{
        
    }];
}

@end