//
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// HXTagsView.m
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// 黄轩 https://github.com/huangxuan518
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//
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// Created by 黄轩 on 16/1/13.
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// Copyright © 2015年 IT小子. All rights reserved.
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//
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#import "HXTagsView.h"
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#import "HXTagCollectionViewCell.h"
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#import "HXTagAttribute.h"
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@interface HXTagsView () <UICollectionViewDelegate, UICollectionViewDataSource>
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@property (nonatomic,strong) UICollectionView *collectionView;
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@end
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@implementation HXTagsView
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static NSString * const reuseIdentifier = @"HXTagCollectionViewCellId";
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- (id)initWithFrame:(CGRect)frame
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{
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if (self = [super initWithFrame:frame]) {
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[self setup];
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}
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return self;
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}
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- (id)initWithCoder:(NSCoder *)aDecoder
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{
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if (self = [super initWithCoder:aDecoder]) {
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[self setup];
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}
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return self;
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}
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- (void)setup
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{
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//初始化样式
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_tagAttribute = [HXTagAttribute new];
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_layout = [[EqualSpaceFlowLayoutEvolve alloc] init];
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_layout.betweenOfCell = 12;
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self.collectionView.backgroundColor = [UIColor clearColor];
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[self addSubview:self.collectionView];
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}
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#pragma mark - UICollectionViewDelegate | UICollectionViewDataSource
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- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section
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{
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return _tags.count;
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}
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- (CGSize)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout sizeForItemAtIndexPath:(NSIndexPath *)indexPath
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{
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HXTagCollectionViewFlowLayout *layout = (HXTagCollectionViewFlowLayout *)collectionView.collectionViewLayout;
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CGSize maxSize = CGSizeMake(collectionView.frame.size.width - layout.sectionInset.left - layout.sectionInset.right, layout.itemSize.height);
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CGRect frame = [_tags[indexPath.item] boundingRectWithSize:maxSize options:NSStringDrawingUsesFontLeading|NSStringDrawingUsesLineFragmentOrigin attributes:@{NSFontAttributeName: [UIFont systemFontOfSize:_tagAttribute.titleSize]} context:nil];
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if (self.isAdaptive) {
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return self.layout.itemSize;
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}else{
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return CGSizeMake(frame.size.width + _tagAttribute.tagSpace, layout.itemSize.height);
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}
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}
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- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
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{
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HXTagCollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:reuseIdentifier forIndexPath:indexPath];
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cell.backgroundColor = _tagAttribute.normalBackgroundColor;
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cell.layer.borderColor = _tagAttribute.borderColor.CGColor;
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cell.layer.cornerRadius = _tagAttribute.cornerRadius;
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cell.layer.masksToBounds = YES;
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cell.layer.borderWidth = _tagAttribute.borderWidth;
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cell.titleLabel.textColor = _tagAttribute.textColor;
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cell.titleLabel.font = [UIFont systemFontOfSize:_tagAttribute.titleSize];
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cell.image.image = nil;
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NSString *title = self.tags[indexPath.item];
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if (_key.length > 0) {
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cell.titleLabel.attributedText = [self searchTitle:title key:_key keyColor:_tagAttribute.keyColor];
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} else {
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cell.titleLabel.text = title;
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}
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if ([self.selectedTags containsObject:self.tags[indexPath.item]]) {
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cell.backgroundColor = _tagAttribute.selectedBackgroundColor;
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cell.titleLabel.textColor = _tagAttribute.selectedTextColor;
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cell.layer.borderColor = _tagAttribute.selectedBorderColor.CGColor;
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cell.image.image = [UIImage imageNamed:@"bg_gradient"];
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}
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return cell;
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}
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- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath
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{
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HXTagCollectionViewCell *cell = (HXTagCollectionViewCell *)[collectionView cellForItemAtIndexPath:indexPath];
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if ([self.selectedTags containsObject:self.tags[indexPath.item]]) {
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cell.backgroundColor = _tagAttribute.normalBackgroundColor;
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cell.titleLabel.textColor = _tagAttribute.textColor;
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cell.layer.borderColor = _tagAttribute.borderColor.CGColor;
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cell.image.image = nil;
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[self.selectedTags removeObject:self.tags[indexPath.item]];
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}
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else {
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if (_isMultiSelect) {
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cell.titleLabel.textColor = _tagAttribute.selectedTextColor;
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cell.layer.borderColor = _tagAttribute.selectedBorderColor.CGColor;
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cell.backgroundColor = _tagAttribute.selectedBackgroundColor;
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cell.image.image = [UIImage imageNamed:@"bg_gradient"];
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[self.selectedTags addObject:self.tags[indexPath.item]];
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} else {
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[self.selectedTags removeAllObjects];
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[self.selectedTags addObject:self.tags[indexPath.item]];
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[self reloadData];
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}
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}
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if (_completion) {
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_completion(self.selectedTags,indexPath.item);
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}
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}
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// 设置文字中关键字高亮
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- (NSMutableAttributedString *)searchTitle:(NSString *)title key:(NSString *)key keyColor:(UIColor *)keyColor {
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NSMutableAttributedString *titleStr = [[NSMutableAttributedString alloc] initWithString:title];
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NSString *copyStr = title;
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NSMutableString *xxstr = [NSMutableString new];
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for (int i = 0; i < key.length; i++) {
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[xxstr appendString:@"*"];
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}
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while ([copyStr rangeOfString:key options:NSCaseInsensitiveSearch].location != NSNotFound) {
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NSRange range = [copyStr rangeOfString:key options:NSCaseInsensitiveSearch];
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[titleStr addAttribute:NSForegroundColorAttributeName value:keyColor range:range];
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copyStr = [copyStr stringByReplacingCharactersInRange:NSMakeRange(range.location, range.length) withString:xxstr];
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}
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return titleStr;
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}
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- (void)reloadData {
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[self.collectionView reloadData];
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}
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- (void)clearSelectedTags{
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[self.selectedTags removeAllObjects];
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}
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- (void) reloadSelectedTags:(NSArray *) tags
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{
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[self.selectedTags addObjectsFromArray:tags];
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}
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- (void)layoutSubviews {
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[super layoutSubviews];
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_collectionView.frame = self.bounds;
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}
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#pragma mark - 懒加载
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- (NSMutableArray *)selectedTags
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{
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if (!_selectedTags) {
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_selectedTags = [NSMutableArray array];
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}
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return _selectedTags;
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}
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- (UICollectionView *)collectionView {
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if (!_collectionView) {
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_collectionView = [[UICollectionView alloc] initWithFrame:self.bounds collectionViewLayout:_layout];
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_collectionView.delegate = self;
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_collectionView.dataSource = self;
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_collectionView.backgroundColor = [UIColor colorWithRed:241/255.0 green:241/255.0 blue:241/255.0 alpha:1.0];
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[_collectionView registerClass:[HXTagCollectionViewCell class] forCellWithReuseIdentifier:reuseIdentifier];
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}
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_collectionView.collectionViewLayout = _layout;
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if (_layout.scrollDirection == UICollectionViewScrollDirectionVertical) {
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//垂直
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_collectionView.showsVerticalScrollIndicator = YES;
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_collectionView.showsHorizontalScrollIndicator = NO;
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} else {
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_collectionView.showsHorizontalScrollIndicator = YES;
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_collectionView.showsVerticalScrollIndicator = NO;
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}
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_collectionView.frame = self.bounds;
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return _collectionView;
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}
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+ (CGFloat)getHeightWithTags:(NSArray *)tags layout:(HXTagCollectionViewFlowLayout *)layout tagAttribute:(HXTagAttribute *)tagAttribute width:(CGFloat)width
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{
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CGFloat contentHeight;
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if (!layout) {
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layout = [[HXTagCollectionViewFlowLayout alloc] init];
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}
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if (tagAttribute.titleSize <= 0) {
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tagAttribute = [[HXTagAttribute alloc] init];
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}
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//cell的高度 = 顶部 + 高度
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contentHeight = layout.sectionInset.top + layout.itemSize.height;
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CGFloat originX = layout.sectionInset.left;
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CGFloat originY = layout.sectionInset.top;
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NSInteger itemCount = tags.count;
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for (NSInteger i = 0; i < itemCount; i++) {
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CGSize maxSize = CGSizeMake(width - layout.sectionInset.left - layout.sectionInset.right, layout.itemSize.height);
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CGRect frame = [tags[i] boundingRectWithSize:maxSize options:NSStringDrawingUsesFontLeading|NSStringDrawingUsesLineFragmentOrigin attributes:@{NSFontAttributeName: [UIFont systemFontOfSize:tagAttribute.titleSize]} context:nil];
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CGSize itemSize = CGSizeMake(frame.size.width + tagAttribute.tagSpace, layout.itemSize.height);
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if (layout.scrollDirection == UICollectionViewScrollDirectionVertical) {
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//垂直滚动
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//当前CollectionViewCell的起点 + 当前CollectionViewCell的宽度 + 当前CollectionView距离右侧的间隔 > collectionView的宽度
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if ((originX + itemSize.width + layout.sectionInset.right) > width) {
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originX = layout.sectionInset.left;
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originY += itemSize.height + layout.minimumLineSpacing;
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contentHeight += itemSize.height + layout.minimumLineSpacing;
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}
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}
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originX += itemSize.width + layout.minimumInteritemSpacing;
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}
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contentHeight += layout.sectionInset.bottom;
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return contentHeight;
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}
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+ (CGFloat)getEqualSpaceFlowLayoutHeightWithTags:(NSArray *)tags layout:(EqualSpaceFlowLayoutEvolve *)layout tagAttribute:(HXTagAttribute *)tagAttribute width:(CGFloat)width
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{
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CGFloat contentHeight;
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if (!layout) {
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layout = [[EqualSpaceFlowLayoutEvolve alloc] init];
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}
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if (tagAttribute.titleSize <= 0) {
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tagAttribute = [[HXTagAttribute alloc] init];
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}
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//cell的高度 = 顶部 + 高度
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contentHeight = layout.sectionInset.top + layout.itemSize.height;
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CGFloat originX = layout.sectionInset.left;
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CGFloat originY = layout.sectionInset.top;
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NSInteger itemCount = tags.count;
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for (NSInteger i = 0; i < itemCount; i++) {
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CGSize maxSize = CGSizeMake(width - layout.sectionInset.left - layout.sectionInset.right, layout.itemSize.height);
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CGRect frame = [tags[i] boundingRectWithSize:maxSize options:NSStringDrawingUsesFontLeading|NSStringDrawingUsesLineFragmentOrigin attributes:@{NSFontAttributeName: [UIFont systemFontOfSize:tagAttribute.titleSize]} context:nil];
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CGSize itemSize = CGSizeMake(frame.size.width + tagAttribute.tagSpace, layout.itemSize.height);
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if (layout.scrollDirection == UICollectionViewScrollDirectionVertical) {
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//垂直滚动
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//当前CollectionViewCell的起点 + 当前CollectionViewCell的宽度 + 当前CollectionView距离右侧的间隔 > collectionView的宽度
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if ((originX + itemSize.width + layout.sectionInset.right) > width) {
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originX = layout.sectionInset.left;
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originY += itemSize.height + layout.minimumLineSpacing;
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contentHeight += itemSize.height + layout.minimumLineSpacing;
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}
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}
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originX += itemSize.width + layout.minimumInteritemSpacing;
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}
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contentHeight += layout.sectionInset.bottom;
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return contentHeight;
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}
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+ (CGFloat)getEqualSpaceFixedHeightWithTags:(NSArray *)tags layout:(EqualSpaceFlowLayoutEvolve *)layout tagAttribute:(HXTagAttribute *)tagAttribute width:(CGFloat)width withItemSize:(CGSize)size
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{
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CGFloat contentHeight;
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if (!layout) {
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layout = [[EqualSpaceFlowLayoutEvolve alloc] init];
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}
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if (tagAttribute.titleSize <= 0) {
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tagAttribute = [[HXTagAttribute alloc] init];
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}
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//cell的高度 = 顶部 + 高度
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contentHeight = layout.sectionInset.top + layout.itemSize.height;
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CGFloat originX = layout.sectionInset.left;
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CGFloat originY = layout.sectionInset.top;
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NSInteger itemCount = tags.count;
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for (NSInteger i = 0; i < itemCount; i++) {
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CGSize maxSize = CGSizeMake(width - layout.sectionInset.left - layout.sectionInset.right, layout.itemSize.height);
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CGRect frame = [tags[i] boundingRectWithSize:maxSize options:NSStringDrawingUsesFontLeading|NSStringDrawingUsesLineFragmentOrigin attributes:@{NSFontAttributeName: [UIFont systemFontOfSize:tagAttribute.titleSize]} context:nil];
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CGSize itemSize = size;
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if (layout.scrollDirection == UICollectionViewScrollDirectionVertical) {
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//垂直滚动
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//当前CollectionViewCell的起点 + 当前CollectionViewCell的宽度 + 当前CollectionView距离右侧的间隔 > collectionView的宽度
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if ((originX + itemSize.width + layout.sectionInset.right) > width) {
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originX = layout.sectionInset.left;
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originY += itemSize.height + layout.minimumLineSpacing;
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contentHeight += itemSize.height + layout.minimumLineSpacing;
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}
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}
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originX += itemSize.width + layout.minimumInteritemSpacing;
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}
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contentHeight += layout.sectionInset.bottom;
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return contentHeight;
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}
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@end
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