#import "TRCardListView.h"
#define TR_HEIGTH [UIScreen mainScreen].bounds.size.height
#define TR_WIDTH [UIScreen mainScreen].bounds.size.width
#ifndef __OPTIMIZE__
#? ? define TRLog(...) NSLog(__VA_ARGS__)
#else
#? ? define TRLog(...)
#endif
@interface TRCard : NSObject
@property (nonatomic, strong) UIView *view;
@property (nonatomic, assign) CGFloat positionY;
@end
@implementation TRCard
- (instancetype)initWithPositionY:(CGFloat)positionY{
? ?
? ? if (self = [super init]) {
? ? ? ? _positionY = positionY;
? ? ? ? _view = nil;
? ? }
? ? return self;
}
@end
@interface TRCardListView()
@property (nonatomic, strong) UIView *contentView;
//用來存儲card位置
@property (nonatomic, strong) NSMutableArray<TRCard *> * cards;
@property (nonatomic, strong) NSMutableArray<UIView *> * unUsedCards;
@property (nonatomic, assign) NSInteger countOfCard;
@property (nonatomic) Class cardClass;
@end
@implementation TRCardListView
- (void)registerForReuseWithClass:(Class)cardClass{
? ?
? ? _cardClass = cardClass;
? ? [self updateLayout];
}
- (UIView *)dequeueReusableCardAtIndex:(NSInteger)index{
? ?
? ? UIView *view = nil;
? ? if (_unUsedCards.count > 0) {
? ? ? ? view = _unUsedCards.firstObject;
? ? }else{
? ? ? ? UIView *card = [[_cardClass alloc] initWithFrame:CGRectMake(0, 0, TR_WIDTH, TR_HEIGTH)];
? ? ? ? view = card;
? ? ? ?
? ? ? ? UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleTapGesture:)];
? ? ? ? [card addGestureRecognizer:tap];
? ? ? ?
//? ? ? ? UISwipeGestureRecognizer *swipe = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(handleSwipeGesture:)];
//? ? ? ? swipe.direction = UISwipeGestureRecognizerDirectionRight;
//? ? ? ? [card addGestureRecognizer:swipe];
? ? }
? ? return view;
}
- (void)handleTapGesture:(UITapGestureRecognizer *)tap{
? ? UIView *view = tap.view;
? ? if (_trDelegate && [_trDelegate respondsToSelector:@selector(tr_cardListView:didSelectCardAtIndex:)]) {
? ? ? ? for (int i = 0; i < self.countOfCard; i++) {
? ? ? ? ? ? if (_cards[i].view) {
? ? ? ? ? ? ? ? if (view == _cards[i].view) {
? ? ? ? ? ? ? ? ? ? [_trDelegate tr_cardListView:self didSelectCardAtIndex:i];
? ? ? ? ? ? ? ? ? ? break;
? ? ? ? ? ? ? ? }
? ? ? ? ? ? }
? ? ? ? }
? ? }
}
//- (void)handleSwipeGesture:(UISwipeGestureRecognizer *)swipe{
//? ? NSLog(@"swipe");
//? ? UIView *view = swipe.view;
//}
- (void)reloadData{
? ?
? ? [self initCards];
? ? [self updateLayout];
}
- (void)awakeFromNib{
? ?
? ? [super awakeFromNib];
? ? [self setupContentView];
? ? [self setupDefaultValue];
? ? self.contentView.frame = self.bounds;
}
- (instancetype)init{
? ?
? ? if (self = [super init]) {
? ? ? ? [self setupDefaultValue];
? ? ? ? [self setupContentView];
? ? }
? ? return self;
}
- (void)setFrame:(CGRect)frame{
? ?
? ? [super setFrame:frame];
? ? self.contentView.frame = self.bounds;
}
- (instancetype)initWithFrame:(CGRect)frame{
? ?
? ? if (self = [super initWithFrame:frame]) {
? ? ? ? [self setupContentView];
? ? ? ? [self setupDefaultValue];
? ? }
? ? return self;
}
- (void)setupContentView{
? ?
? ? _contentView = [[UIView alloc] init];
? ? _contentView.backgroundColor = [UIColor clearColor];
? ? [self addSubview:_contentView];
}
- (void)setupDefaultValue{
? ?
? ? _top = 64.0;
? ? _distance = 64.0;
}
- (void)initCards{
? ?
? ? _cards = [NSMutableArray array];
? ? _unUsedCards = [NSMutableArray array];
? ? NSInteger count = self.countOfCard;
? ? for (NSInteger i = 0; i < count; i++) {
? ? ? ? TRCard *card = [[TRCard alloc] initWithPositionY:0];
? ? ? ? [_cards insertObject:card atIndex:0];
? ? }
}
- (void)setTrDelegate:(id<TRCardListViewDelegate>)trDelegate{
? ? _trDelegate = trDelegate;
? ? if (self.countOfCard) {
? ? ? ? [self initCards];
? ? ? ? [self updateLayout];
? ? }
}
- (void)setTrDataSource:(id<TRCardListViewDataSource>)trDataSource{
? ? _trDataSource = trDataSource;
? ? if (self.countOfCard) {
? ? ? ? [self initCards];
? ? ? ? [self updateLayout];
? ? }
}
- (NSInteger)countOfCard{
? ?
? ? if (_trDataSource && [_trDataSource respondsToSelector:@selector(tr_numberOfCardsInCardListView:)]) {
? ? ? ? return [_trDataSource tr_numberOfCardsInCardListView:self];
? ? }
? ? return 0;
}
- (void)setTop:(CGFloat)top{
? ?
? ? _top = top;
? ? [self updateLayout];
}
- (void)setDistance:(CGFloat)distance{
? ?
? ? _distance = distance;
? ? [self updateLayout];
}
- (void)setContentOffset:(CGPoint)contentOffset{
? ?
? ? [self updateLayoutOfCardWithContentOffset:contentOffset];
? ? [super setContentOffset:contentOffset];
}
- (void)updateLayout{
? ?
? ? self.contentSize = CGSizeMake(TR_WIDTH, TR_HEIGTH + self.distance * self.countOfCard - 1.5);
? ? self.contentOffset = CGPointMake(0, 0);
}
- (void)updateLayoutOfCardWithContentOffset:(CGPoint)contentOffset{
? ?
? ? self.contentView.frame = CGRectMake(0, contentOffset.y, TR_WIDTH, TR_HEIGTH);
? ? [_cards enumerateObjectsUsingBlock:^(TRCard * card, NSUInteger idx, BOOL *stop) {
? ? ? ?
? ? ? ? NSInteger value = self.distance;
? ? ? ? /*************設置位置***************/
? ? ? ? NSInteger begin_y = value * (self.countOfCard - idx - 1);
? ? ? ? CGFloat distance_y = self.contentSize.height - contentOffset.y - TR_HEIGTH - begin_y;
? ? ? ? CGFloat positionY = self.top + pow(distance_y, 2) / pow(2, 6);
? ? ? ? if (distance_y >= -50) {
? ? ? ? ? ? CGFloat alpha = distance_y >= 0?1:(distance_y + 50)/ 50;
? ? ? ? ? ? card.view.alpha = alpha;
? ? ? ? }else{
? ? ? ? ? ? card.view.alpha = 0;
? ? ? ? }
? ? ? ? card.positionY = positionY;
? ? ? ? if (positionY <= TR_HEIGTH) {
? ? ? ? ? ? if (card.view == nil) {
? ? ? ? ? ? ? ? [self setViewInCard:card atIndex:idx];
? ? ? ? ? ? ? ? [self addCardWithCard:card atIndex:idx];;
? ? ? ? ? ? }
? ? ? ? ? ? [self updateOriginWithView:card.view newOriginY:positionY];
? ? ? ? ? ? /*************設置大小***************/
? ? ? ? ? ? CGFloat scale = 0.70;
? ? ? ? ? ? scale = (positionY * 0.75 + 70) / 1000 + scale >= 0.95?0.95:(positionY * 0.75 + 50) / 1000 + scale;
? ? ? ? ? ? card.view.layer.transform = CATransform3DMakeScale(scale, scale, 1);
? ? ? ? }else{
? ? ? ? ? ? if (card.view != nil) {
? ? ? ? ? ? ? ? [_unUsedCards addObject:card.view];
? ? ? ? ? ? ? ? [card.view removeFromSuperview];
? ? ? ? ? ? ? ? card.view = nil;
? ? ? ? ? ? }
? ? ? ? }
? ? }];
}
- (void)setViewInCard:(TRCard *)card atIndex:(NSInteger)index{
? ?
? ? if (self.trDataSource && [self.trDataSource respondsToSelector:@selector(tr_cardListView:cardAtIndex:)]) {
? ? ? ?
? ? ? ? UIView * view = [self.trDataSource tr_cardListView:self cardAtIndex:index];
? ? ? ? card.view = view;
? ? ? ? if ([_unUsedCards containsObject:view]) {
? ? ? ? ? ? [_unUsedCards removeObject:view];
? ? ? ? }
? ? }else{
? ? ? ? TRLog(@"未實現(xiàn) Method: \"tr_carListView:cardAtIndex:\"");
? ? }
}
- (void)addCardWithCard:(TRCard *)card atIndex:(NSInteger)index{
? ?
? ? if (index == 0) {
? ? ? ? [self.contentView insertSubview:card.view atIndex:0];
? ? }else if (index == self.countOfCard - 1){
? ? ? ? [self.contentView addSubview:card.view];
? ? }else if (self.cards[index + 1].view){
? ? ? ? [self.contentView insertSubview:card.view atIndex:0];
? ? }else if (self.cards[index - 1].view){
? ? ? ? [self.contentView addSubview:card.view];
? ? }
}
- (void)updateOriginWithView:(UIView *)view newOriginY:(CGFloat)originY{
? ?
? ? CGSize size = view.frame.size;
? ? view.frame = CGRectMake(view.frame.origin.x, originY, size.width, size.height);
}
@end//
//? TRCardListView.m
//? 卡片堆疊效果實現(xiàn)
//
//? Created by cry on 2017/6/8.
//? Copyright ? 2017年 egova. All rights reserved.
//
#import "TRCardListView.h"
#define TR_HEIGTH [UIScreen mainScreen].bounds.size.height
#define TR_WIDTH [UIScreen mainScreen].bounds.size.width
#ifndef __OPTIMIZE__
#? ? define TRLog(...) NSLog(__VA_ARGS__)
#else
#? ? define TRLog(...)
#endif
@interface TRCard : NSObject
@property (nonatomic, strong) UIView *view;
@property (nonatomic, assign) CGFloat positionY;
@end
@implementation TRCard
- (instancetype)initWithPositionY:(CGFloat)positionY{
? ?
? ? if (self = [super init]) {
? ? ? ? _positionY = positionY;
? ? ? ? _view = nil;
? ? }
? ? return self;
}
@end
@interface TRCardListView()
@property (nonatomic, strong) UIView *contentView;
//用來存儲card位置
@property (nonatomic, strong) NSMutableArray<TRCard *> * cards;
@property (nonatomic, strong) NSMutableArray<UIView *> * unUsedCards;
@property (nonatomic, assign) NSInteger countOfCard;
@property (nonatomic
