//
|
// HMEmoticonInputView.m
|
// 表情键盘
|
//
|
// Created by 刘凡 on 16/3/3.
|
// Copyright © 2016年 itcast. All rights reserved.
|
//
|
|
#import "HMEmoticonInputView.h"
|
#import "HMEmoticonToolbar.h"
|
#import "UIImage+HMEmoticon.h"
|
#import "HMEmoticonManager.h"
|
#import "HMEmoticonCell.h"
|
|
/// 表情 Cell 可重用标识符号
|
NSString *const HMEmoticonCellIdentifier = @"HMEmoticonCellIdentifier";
|
|
#pragma mark - 表情键盘布局
|
@interface HMEmoticonKeyboardLayout : UICollectionViewFlowLayout
|
|
@end
|
|
@implementation HMEmoticonKeyboardLayout
|
|
- (void)prepareLayout {
|
[super prepareLayout];
|
|
self.itemSize = self.collectionView.bounds.size;
|
self.minimumInteritemSpacing = 0;
|
self.minimumLineSpacing = 0;
|
self.scrollDirection = UICollectionViewScrollDirectionHorizontal;
|
|
self.collectionView.pagingEnabled = YES;
|
self.collectionView.showsHorizontalScrollIndicator = NO;
|
self.collectionView.bounces = NO;
|
}
|
|
@end
|
|
#pragma mark - 表情输入视图
|
@interface HMEmoticonInputView() <UICollectionViewDataSource, UICollectionViewDelegate, HMEmoticonToolbarDelegate, HMEmoticonCellDelegate>
|
|
@end
|
|
@implementation HMEmoticonInputView {
|
UICollectionView *_collectionView;
|
HMEmoticonToolbar *_toolbar;
|
UIPageControl *_pageControl;
|
|
void (^_selectedEmoticonCallBack)(HMEmoticon * _Nullable, BOOL);
|
}
|
|
#pragma mark - 构造函数
|
- (instancetype)initWithSelectedEmoticon:(void (^)(HMEmoticon * _Nullable, BOOL))selectedEmoticon {
|
CGRect frame = [UIScreen mainScreen].bounds;
|
frame.size.height = 216;
|
|
self = [super initWithFrame:frame];
|
if (self) {
|
_selectedEmoticonCallBack = selectedEmoticon;
|
|
[self prepareUI];
|
|
NSIndexPath *indexPath = [NSIndexPath indexPathForItem:0 inSection:1];
|
[_collectionView scrollToItemAtIndexPath:indexPath
|
atScrollPosition:UICollectionViewScrollPositionLeft
|
animated:NO];
|
[self updatePageControlWithIndexPath:indexPath];
|
[_toolbar selectSection:indexPath.section];
|
}
|
return self;
|
}
|
|
- (instancetype)initWithFrame:(CGRect)frame {
|
NSAssert(NO, @"请调用 initWithSelectedEmoticon: 实例化表情输入视图");
|
return nil;
|
}
|
|
#pragma mark - HMEmoticonToolbarDelegate
|
- (void)emoticonToolbarDidSelectSection:(NSInteger)section {
|
NSIndexPath *indexPath = [NSIndexPath indexPathForItem:0 inSection:section];
|
|
[_collectionView scrollToItemAtIndexPath:indexPath
|
atScrollPosition:UICollectionViewScrollPositionLeft
|
animated:NO];
|
[self updatePageControlWithIndexPath:indexPath];
|
}
|
|
#pragma mark - HMEmoticonCellDelegate
|
- (void)emoticonCellDidSelectedEmoticon:(HMEmoticon *)emoticon isRemoved:(BOOL)isRemoved {
|
if (_selectedEmoticonCallBack != nil) {
|
_selectedEmoticonCallBack(emoticon, isRemoved);
|
}
|
|
/// 添加最近使用表情
|
if (emoticon != nil) {
|
[[HMEmoticonManager sharedManager] addRecentEmoticon:emoticon];
|
|
// 如果当前停留不是在默认表情页，就更新默认表情页数据
|
if ([_collectionView indexPathsForVisibleItems].firstObject.section != 0) {
|
[_collectionView reloadItemsAtIndexPaths:@[[NSIndexPath indexPathForItem:0 inSection:0]]];
|
}
|
}
|
}
|
|
#pragma mark - UICollectionViewDataSource, UICollectionViewDelegate
|
- (NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView {
|
return [HMEmoticonManager sharedManager].packages.count;
|
}
|
|
- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section {
|
return [[HMEmoticonManager sharedManager] numberOfPagesInSection:section];
|
}
|
|
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath {
|
|
HMEmoticonCell *cell = [collectionView
|
dequeueReusableCellWithReuseIdentifier:HMEmoticonCellIdentifier
|
forIndexPath:indexPath];
|
|
cell.emoticons = [[HMEmoticonManager sharedManager] emoticonsWithIndexPath:indexPath];
|
cell.indexPath = indexPath;
|
cell.delegate = self;
|
|
return cell;
|
}
|
|
#pragma mark - UIScrollView Delegate
|
- (void)scrollViewDidScroll:(UIScrollView *)scrollView {
|
CGPoint center = scrollView.center;
|
center.x += scrollView.contentOffset.x;
|
|
NSArray *indexPaths = [_collectionView indexPathsForVisibleItems];
|
|
NSIndexPath *targetPath = nil;
|
for (NSIndexPath *indexPath in indexPaths) {
|
UICollectionViewCell *cell = [_collectionView cellForItemAtIndexPath:indexPath];
|
|
if (CGRectContainsPoint(cell.frame, center)) {
|
targetPath = indexPath;
|
break;
|
}
|
}
|
|
if (targetPath != nil) {
|
[self updatePageControlWithIndexPath:targetPath];
|
[_toolbar selectSection:targetPath.section];
|
}
|
}
|
|
- (void)updatePageControlWithIndexPath:(NSIndexPath *)indexPath {
|
_pageControl.numberOfPages = [[HMEmoticonManager sharedManager] numberOfPagesInSection:indexPath.section];
|
_pageControl.currentPage = indexPath.item;
|
}
|
|
#pragma mark - 设置界面
|
- (void)prepareUI {
|
// 1. 基本属性设置
|
self.backgroundColor = [UIColor colorWithPatternImage:[UIImage hm_imageNamed:@"emoticon_keyboard_background"]];
|
|
// 2. 添加工具栏
|
_toolbar = [[HMEmoticonToolbar alloc] init];
|
[self addSubview:_toolbar];
|
|
// 设置工具栏位置
|
CGFloat toolbarHeight = 42;
|
CGRect toolbarRect = self.bounds;
|
toolbarRect.origin.y = toolbarRect.size.height - toolbarHeight;
|
toolbarRect.size.height = toolbarHeight;
|
_toolbar.frame = toolbarRect;
|
|
_toolbar.delegate = self;
|
|
// 3. 添加 collectionView
|
CGRect collectionViewRect = self.bounds;
|
collectionViewRect.size.height -= toolbarHeight;
|
_collectionView = [[UICollectionView alloc]
|
initWithFrame:collectionViewRect
|
collectionViewLayout:[[HMEmoticonKeyboardLayout alloc] init]];
|
[self addSubview:_collectionView];
|
|
// 设置 collectionView
|
_collectionView.backgroundColor = [UIColor clearColor];
|
|
_collectionView.dataSource = self;
|
_collectionView.delegate = self;
|
|
[_collectionView registerClass:[HMEmoticonCell class] forCellWithReuseIdentifier:HMEmoticonCellIdentifier];
|
|
// 4. 分页控件
|
_pageControl = [[UIPageControl alloc] init];
|
[self addSubview:_pageControl];
|
|
// 设置分页控件
|
_pageControl.hidesForSinglePage = YES;
|
_pageControl.userInteractionEnabled = NO;
|
|
[_pageControl setValue:[UIImage hm_imageNamed:@"compose_keyboard_dot_selected"] forKey:@"_currentPageImage"];
|
[_pageControl setValue:[UIImage hm_imageNamed:@"compose_keyboard_dot_normal"] forKey:@"_pageImage"];
|
|
// 自动布局
|
_pageControl.translatesAutoresizingMaskIntoConstraints = NO;
|
[self addConstraint:[NSLayoutConstraint constraintWithItem:_pageControl
|
attribute:NSLayoutAttributeCenterX
|
relatedBy:NSLayoutRelationEqual
|
toItem:self
|
attribute:NSLayoutAttributeCenterX
|
multiplier:1.0
|
constant:0.0]];
|
[self addConstraint:[NSLayoutConstraint constraintWithItem:_pageControl
|
attribute:NSLayoutAttributeBottom
|
relatedBy:NSLayoutRelationEqual
|
toItem:_toolbar
|
attribute:NSLayoutAttributeTop
|
multiplier:1.0
|
constant:0.0]];
|
}
|
|
@end
|
