wodeshebao-iOS/我的社保/Public/View/SPSBBroadcastView.m

//
//  SPSBBroadcastView.m
//  我的社保
//
//  Created by shanp on 2021/5/12.
//

#import "SPSBBroadcastView.h"
#import "SPSBUIGeneralHeader.h"

#define LimitWidth (jxh_screenWidth() - 70)
static NSString *const space = @"                              ";
static const NSInteger SPConsultationBroadcastViewHeight = 45;

@interface SPSBBroadcastView ()<CAAnimationDelegate> {
    UILabel *_broadcastLabel;
    void (^_reloadDataAction)(CGFloat height);
    UIView *_animationView;
    UILabel *_animationLabel;
    CGFloat _spaceWidth;
    CGFloat _broadcastWidth;
    bool _isAnimation;
}

@end

@implementation SPSBBroadcastView

- (instancetype)initWithReloadDataAction:(void (^)(CGFloat height))reloadDataAction {
    self = [super init];
    if (!self) return nil;
    
    _reloadDataAction = reloadDataAction;
    self.backgroundColor = spsb_FDF8EC_color();
    self.layer.masksToBounds = true;
    
    UIButton *deleteButton = [UIButton convenienceWithTarget:self action:@selector(deleteBroadcastView)];
    [self addSubview:deleteButton];
    [deleteButton makeConstraints:^(JXHConstraintMaker *make) {
        make.top.and.trailing.equalTo(0);
        make.size.equalTo(CGSizeMake(45, 45));
    }];
    
    UIImageView *deleteImageView = [[UIImageView alloc] initWithImage:jxh_getImage(notice_close)];
    [deleteButton addSubview:deleteImageView];
    [deleteImageView makeConstraints:^(JXHConstraintMaker *make) {
        make.size.equalTo(CGSizeMake(20, 20));
        make.center.equalTo(deleteButton);
    }];
    
    _broadcastLabel = [UILabel convenienceWithFont:spsb_font(13) text:@"" textColor:spsb_FF801A_color()];
    _broadcastLabel.backgroundColor = spsb_FDF8EC_color();
    [self addSubview:_broadcastLabel];
    [_broadcastLabel makeConstraints:^(JXHConstraintMaker *make) {
        make.leading.equalTo(15);
        make.centerY.equalTo(self);
        make.trailing.equalTo(-45);
    }];
    
    _animationView = [[UIView alloc] init];
    _animationView.layer.masksToBounds = true;
    _animationView.backgroundColor = spsb_FDF8EC_color();
    [self addSubview:_animationView];
    [_animationView makeConstraints:^(JXHConstraintMaker *make) {
        make.top.and.bottom.equalTo(0);
        make.leading.equalTo(15);
        make.trailing.equalTo(-45);
    }];
    _animationLabel = [UILabel convenienceWithFont:spsb_font(13) text:@"" textColor:spsb_FF801A_color()];
    _animationLabel.backgroundColor = spsb_FDF8EC_color();
    [_animationView addSubview:_animationLabel];
    [_animationLabel makeConstraints:^(JXHConstraintMaker *make) {
        make.leading.and.top.and.bottom.equalTo(0);
    }];
    _animationLabel.text = space;
    [_animationLabel sizeToFit];
    _spaceWidth = _animationLabel.bounds.size.width;
    
    return self;
}

- (void)deleteBroadcastView {
    _animationView.hidden = true;
    [_animationLabel.layer removeAnimationForKey:@"rollingAnimation"];
    _isAnimation = false;
    _reloadDataAction(0);
}

- (void)animationBeginFirst:(bool)flag {
    _isAnimation = true;
    CAKeyframeAnimation *animation = [CAKeyframeAnimation animationWithKeyPath:@"position"];
    if (flag) {
        CGFloat baseTime = (_broadcastWidth + _spaceWidth) / 50;
        CGFloat delay = 1 / (baseTime + 1);
        //设定关键帧位置，必须含起始与终止位置
        animation.values = @[[NSValue valueWithCGPoint:CGPointMake(_broadcastWidth + _spaceWidth / 2, SPConsultationBroadcastViewHeight / 2)],
                             [NSValue valueWithCGPoint:CGPointMake(_broadcastWidth + _spaceWidth / 2, SPConsultationBroadcastViewHeight / 2)],
                             [NSValue valueWithCGPoint:CGPointMake(-_spaceWidth / 2, SPConsultationBroadcastViewHeight / 2)]];
        //设定每个关键帧的时长，如果没有显式地设置，则默认每个帧的时间=总duration/(values.count - 1)
        animation.keyTimes = @[[NSNumber numberWithFloat:0.0],
                               [NSNumber numberWithFloat:delay],
                               [NSNumber numberWithFloat:1]];
        animation.timingFunctions = @[[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear], [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear]];
        animation.delegate = self;
        animation.calculationMode = kCAAnimationLinear;
        animation.duration = baseTime + 1;
    } else {
        //设定关键帧位置，必须含起始与终止位置
        animation.values = @[[NSValue valueWithCGPoint:CGPointMake(_broadcastWidth + _spaceWidth / 2, SPConsultationBroadcastViewHeight / 2)],
                             [NSValue valueWithCGPoint:CGPointMake(-_spaceWidth / 2, SPConsultationBroadcastViewHeight / 2)]];
        //设定每个关键帧的时长，如果没有显式地设置，则默认每个帧的时间=总duration/(values.count - 1)
        animation.keyTimes = @[[NSNumber numberWithFloat:0.0],
                               [NSNumber numberWithFloat:1]];
        animation.timingFunctions = @[[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear], [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear]];
        animation.delegate = self;
        animation.calculationMode = kCAAnimationLinear;
        animation.duration = (_broadcastWidth + _spaceWidth) / 50;
    }
    
    [_animationLabel.layer addAnimation:animation forKey:@"rollingAnimation"];
}

- (void)animationDidStop:(CAAnimation *)anim finished:(bool)flag {
    if (flag) {
        [_animationLabel.layer removeAnimationForKey:@"rollingAnimation"];
        [self animationBeginFirst:false];
    }
}

- (void)stopAnimation {
    if (_isAnimation) {
        [_animationLabel.layer removeAnimationForKey:@"rollingAnimation"];
    }
}

- (void)beginAnimation {
    if (_isAnimation) {
        [self animationBeginFirst:true];
    }
}

- (void)reloadData:(nullable NSString *)broadcastString {
    if (nil == broadcastString || broadcastString.length == 0) {
        [self deleteBroadcastView];
        return;
    }
    [_animationLabel.layer removeAnimationForKey:@"rollingAnimation"];
    _animationLabel.text = broadcastString;
    [_animationLabel sizeToFit];
    _broadcastWidth = _animationLabel.bounds.size.width;
    if (_broadcastWidth > LimitWidth) {
        _animationLabel.text = [NSString stringWithFormat:@"%@%@%@", broadcastString, space, broadcastString];
        [_animationLabel sizeToFit];
        _animationView.hidden = false;
        [self animationBeginFirst:true];
        
    } else {
        _animationView.hidden = true;
        _isAnimation = false;
    }
    _broadcastLabel.text = broadcastString;
    CGFloat height = SPConsultationBroadcastViewHeight;
    if ([broadcastString isEqualToString:@""]) {
        height = 0;
    }
    
    _reloadDataAction(height);
}

@end

#undef LimitWidth