//
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// HMEmoticonCell.m
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// 表情键盘
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//
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// Created by 刘凡 on 16/3/3.
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// Copyright © 2016年 itcast. All rights reserved.
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//
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#import "HMEmoticonCell.h"
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#import "HMEmoticon.h"
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#import "UIImage+HMEmoticon.h"
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#import "HMEmoticonTipView.h"
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#import "HMEmoticonButton.h"
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@implementation HMEmoticonCell {
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HMEmoticonTipView *_tipView;
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UILabel *_recentLabel;
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HMEmoticonButton *_deleteButton;
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}
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#pragma mark - 设置数据
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- (void)setEmoticons:(NSArray<HMEmoticon *> *)emoticons {
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_emoticons = emoticons;
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for (UIView *v in self.contentView.subviews) {
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v.hidden = YES;
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}
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_deleteButton.hidden = NO;
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NSInteger index = 0;
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for (HMEmoticon *e in _emoticons) {
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HMEmoticonButton *btn = self.contentView.subviews[index++];
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btn.emoticon = e;
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}
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}
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- (void)setIndexPath:(NSIndexPath *)indexPath {
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_indexPath = indexPath;
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_recentLabel.hidden = indexPath.section != 0;
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}
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#pragma mark - 构造函数
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- (instancetype)initWithFrame:(CGRect)frame {
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self = [super initWithFrame:frame];
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if (self) {
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[self prepareUI];
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// 添加手势监听
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UILongPressGestureRecognizer *longPressGesture = [[UILongPressGestureRecognizer alloc]
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initWithTarget:self
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action:@selector(longPressed:)];
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longPressGesture.minimumPressDuration = 0.1;
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[self addGestureRecognizer:longPressGesture];
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}
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return self;
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}
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- (void)didMoveToWindow {
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[super didMoveToWindow];
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[self.window addSubview:_tipView];
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_tipView.hidden = YES;
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}
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#pragma mark - 监听方法
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- (void)longPressed:(UILongPressGestureRecognizer *)recognizer {
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CGPoint location = [recognizer locationInView:self];
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// 查找选中按钮
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HMEmoticonButton *button = nil;
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for (HMEmoticonButton *btn in self.contentView.subviews) {
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if (CGRectContainsPoint(btn.frame, location) && !btn.hidden) {
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button = btn;
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break;
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}
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}
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if (button == nil) {
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_tipView.hidden = YES;
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return;
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}
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switch (recognizer.state) {
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case UIGestureRecognizerStateBegan:
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case UIGestureRecognizerStateChanged: {
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CGPoint buttonCenter = [self.contentView convertPoint:button.center toView:self.window];
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_tipView.center = buttonCenter;
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_tipView.emoticon = button.emoticon;
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_tipView.hidden = (button == _deleteButton);
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}
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break;
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case UIGestureRecognizerStateEnded:
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[self clickEmoticonButton:button];
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case UIGestureRecognizerStateCancelled:
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case UIGestureRecognizerStateFailed:
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_tipView.hidden = YES;
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break;
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default:
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break;
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}
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}
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- (void)clickEmoticonButton:(HMEmoticonButton *)button {
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[self.delegate emoticonCellDidSelectedEmoticon:button.emoticon isRemoved:button.isDeleteButton];
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}
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#pragma mark - 设置界面
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- (void)prepareUI {
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NSInteger rowCount = 3;
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NSInteger colCount = 7;
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CGFloat leftMargin = 8;
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CGFloat bottomMargin = 20;
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CGFloat w = ceil((self.bounds.size.width - 2 * leftMargin) / colCount);
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CGFloat h = ceil((self.bounds.size.height - bottomMargin) / rowCount);
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for (NSInteger i = 0; i < 21; i++) {
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NSInteger col = i % colCount;
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NSInteger row = i / colCount;
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CGRect rect = CGRectMake(col * w + leftMargin, row * h, w, h);
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UIButton *button = [HMEmoticonButton emoticonButtonWithFrame:rect tag:i];
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[self.contentView addSubview:button];
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[button addTarget:self
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action:@selector(clickEmoticonButton:)
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forControlEvents:UIControlEventTouchUpInside];
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}
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// 删除按钮
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_deleteButton = ((HMEmoticonButton *)self.contentView.subviews.lastObject);
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_deleteButton.deleteButton = YES;
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// 提示视图
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_tipView = [[HMEmoticonTipView alloc] init];
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_recentLabel = [[UILabel alloc] init];
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_recentLabel.text = @"最近使用的表情";
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_recentLabel.textColor = [UIColor lightGrayColor];
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_recentLabel.font = [UIFont systemFontOfSize:12];
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[self.contentView addSubview:_recentLabel];
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_recentLabel.translatesAutoresizingMaskIntoConstraints = false;
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[self.contentView addConstraint:[NSLayoutConstraint constraintWithItem:_recentLabel
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attribute:NSLayoutAttributeCenterX
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relatedBy:NSLayoutRelationEqual
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toItem:self.contentView
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attribute:NSLayoutAttributeCenterX
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multiplier:1
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constant:0]];
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[self.contentView addConstraint:[NSLayoutConstraint constraintWithItem:_recentLabel
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attribute:NSLayoutAttributeBottom
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relatedBy:NSLayoutRelationEqual
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toItem:self.contentView
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attribute:NSLayoutAttributeBottom
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multiplier:1
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constant:-5]];
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}
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@end
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