// // JXCategoryImageCell.m // JXCategoryView // // Created by jiaxin on 2018/8/8. // Copyright © 2018年 jiaxin. All rights reserved. // #import "JXCategoryTitleImageCell.h" #import "JXCategoryTitleImageCellModel.h" @interface JXCategoryTitleImageCell() @property (nonatomic, strong) NSString *currentImageName; @property (nonatomic, strong) NSURL *currentImageURL; @end @implementation JXCategoryTitleImageCell - (void)prepareForReuse { [super prepareForReuse]; self.currentImageName = nil; self.currentImageURL = nil; } - (void)initializeViews { [super initializeViews]; _imageView = [[UIImageView alloc] init]; _imageView.contentMode = UIViewContentModeScaleAspectFit; [self.contentView addSubview:_imageView]; } - (void)layoutSubviews { [super layoutSubviews]; JXCategoryTitleImageCellModel *myCellModel = (JXCategoryTitleImageCellModel *)self.cellModel; self.titleLabel.hidden = NO; self.imageView.hidden = NO; CGSize imageSize = myCellModel.imageSize; self.imageView.bounds = CGRectMake(0, 0, imageSize.width, imageSize.height); switch (myCellModel.imageType) { case JXCategoryTitleImageType_TopImage: { CGFloat contentHeight = imageSize.height + myCellModel.titleImageSpacing + self.titleLabel.bounds.size.height; self.imageView.center = CGPointMake(self.contentView.center.x, (self.contentView.bounds.size.height - contentHeight)/2 + imageSize.height/2); [self refreshTitleLabelCenter:CGPointMake(self.contentView.center.x, CGRectGetMaxY(self.imageView.frame) + myCellModel.titleImageSpacing + self.titleLabel.bounds.size.height/2)]; } break; case JXCategoryTitleImageType_LeftImage: { CGFloat contentWidth = imageSize.width + myCellModel.titleImageSpacing + self.titleLabel.bounds.size.width; self.imageView.center = CGPointMake((self.contentView.bounds.size.width - contentWidth)/2 + imageSize.width/2, self.contentView.center.y); [self refreshTitleLabelCenter:CGPointMake(CGRectGetMaxX(self.imageView.frame) + myCellModel.titleImageSpacing + self.titleLabel.bounds.size.width/2, self.contentView.center.y)]; } break; case JXCategoryTitleImageType_BottomImage: { CGFloat contentHeight = imageSize.height + myCellModel.titleImageSpacing + self.titleLabel.bounds.size.height; [self refreshTitleLabelCenter:CGPointMake(self.contentView.center.x, (self.contentView.bounds.size.height - contentHeight)/2 + self.titleLabel.bounds.size.height/2)]; self.imageView.center = CGPointMake(self.contentView.center.x, CGRectGetMaxY(self.titleLabel.frame) + myCellModel.titleImageSpacing + imageSize.height/2); } break; case JXCategoryTitleImageType_RightImage: { CGFloat contentWidth = imageSize.width + myCellModel.titleImageSpacing + self.titleLabel.bounds.size.width; [self refreshTitleLabelCenter:CGPointMake((self.contentView.bounds.size.width - contentWidth)/2 + self.titleLabel.bounds.size.width/2, self.contentView.center.y)]; self.imageView.center = CGPointMake(CGRectGetMaxX(self.titleLabel.frame) + myCellModel.titleImageSpacing + imageSize.width/2, self.contentView.center.y); } break; case JXCategoryTitleImageType_OnlyImage: { self.titleLabel.hidden = YES; self.imageView.center = self.contentView.center; } break; case JXCategoryTitleImageType_OnlyTitle: { self.imageView.hidden = YES; [self refreshTitleLabelCenter:self.contentView.center]; } break; default: break; } } - (void)refreshTitleLabelCenter:(CGPoint)center { JXCategoryTitleImageCellModel *myCellModel = (JXCategoryTitleImageCellModel *)self.cellModel; if (myCellModel.titleLabelAnchorPointStyle == JXCategoryTitleLabelAnchorPointStyleBottom) { center.y += (self.titleLabel.bounds.size.height/2 + myCellModel.titleLabelVerticalOffset); }else if (myCellModel.titleLabelAnchorPointStyle == JXCategoryTitleLabelAnchorPointStyleTop) { center.y -= (self.titleLabel.bounds.size.height/2 + myCellModel.titleLabelVerticalOffset); } self.titleLabelCenterX.constant = center.x - self.contentView.bounds.size.width/2; self.titleLabelCenterY.constant = center.y - self.contentView.bounds.size.height/2; [self.contentView setNeedsLayout]; [self.contentView layoutIfNeeded]; } - (void)reloadData:(JXCategoryBaseCellModel *)cellModel { [super reloadData:cellModel]; JXCategoryTitleImageCellModel *myCellModel = (JXCategoryTitleImageCellModel *)cellModel; //因为`- (void)reloadData:(JXCategoryBaseCellModel *)cellModel`方法会回调多次,尤其是左右滚动的时候会调用无数次,如果每次都触发图片加载,会非常消耗性能。所以只会在图片发生了变化的时候,才进行图片加载。 NSString *currentImageName = nil; NSURL *currentImageURL = nil; if (myCellModel.imageName != nil) { currentImageName = myCellModel.imageName; }else if (myCellModel.imageURL != nil) { currentImageURL = myCellModel.imageURL; } if (myCellModel.isSelected) { if (myCellModel.selectedImageName != nil) { currentImageName = myCellModel.selectedImageName; }else if (myCellModel.selectedImageURL != nil) { currentImageURL = myCellModel.selectedImageURL; } } if (currentImageName != nil && ![currentImageName isEqualToString:self.currentImageName]) { self.currentImageName = currentImageName; self.imageView.image = [UIImage imageNamed:currentImageName]; }else if (currentImageURL != nil && ![currentImageURL.absoluteString isEqualToString:self.currentImageURL.absoluteString]) { self.currentImageURL = currentImageURL; if (myCellModel.loadImageCallback != nil) { myCellModel.loadImageCallback(self.imageView, currentImageURL); } } if (myCellModel.isImageZoomEnabled) { self.imageView.transform = CGAffineTransformMakeScale(myCellModel.imageZoomScale, myCellModel.imageZoomScale); }else { self.imageView.transform = CGAffineTransformIdentity; } [self setNeedsLayout]; } @end