jiGuangXieZuo/ProductApp/ProductApp/Other/ViewLable.m

//
//  ViewLable.m
//  ProductApp
//
//  Created by 工作 on 2024/9/21.
//

#import "ViewLable.h"


@interface ViewLable ()
///
@property (nonatomic , strong) UILabel *lbname;
///
@property (nonatomic , strong) UIImageView *imgvb;
///
@property (nonatomic , strong) NSTimer *timer;
@property (nonatomic , assign) int inow;

@property (strong, nonatomic) NSLayoutManager *layoutManager;
@property (strong, nonatomic) NSTextStorage *textStorage;
@property (strong, nonatomic) NSTextContainer *textContainer;

@end

@implementation ViewLable

-(id)initWithFrame:(CGRect)frame
{
    if(self = [super initWithFrame:frame])
    {
        
        self.textStorage = [NSTextStorage new];
        self.layoutManager = [NSLayoutManager new];
        
        self.textContainer = [NSTextContainer new];
        
        [self.textStorage addLayoutManager:self.layoutManager];
        
        [self.layoutManager addTextContainer:self.textContainer];
        
        
        PGJUILabel *lbname = [[PGJUILabel alloc] init];
        [lbname setTextColor:RGBCOLOR(26, 26, 26)];
        [lbname setTextAlignment:NSTextAlignmentLeft];
        [lbname setFont:[UIFont systemFontOfSize:16]];
        [lbname setNumberOfLines:0];
        [self addSubview:lbname];
        [lbname mas_makeConstraints:^(MASConstraintMaker *make) {
            make.left.right.top.equalTo(self);
        }];
        _lbname = lbname;
        [self mas_makeConstraints:^(MASConstraintMaker *make) {
            make.height.offset(18);
        }];
        
        UIImageView *imgvb = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 18, 18)];
        [imgvb setImage:[UIImage imageNamed:@"yd_drawTextB"]];
        [self addSubview:imgvb];
        _imgvb = imgvb;
    }
    return self;
}

-(void)setTextColor:(UIColor *)textColor
{
    self.lbname.textColor = textColor;
}
-(void)setTextFont:(UIFont *)textFont
{
    self.lbname.font = textFont;
}
-(void)setFspeed:(float)fspeed
{
    _fspeed = fspeed;
}
-(void)setStrValue:(NSString *)strValue
{
    _strValue = strValue;
    if(self.isCloseAnimation)
    {
        [self.imgvb setHidden:YES];
        
        NSString *str = self.strValue;
        ///行间距
        NSMutableParagraphStyle *style = [NSMutableParagraphStyle new];
        style.lineSpacing = 5;
        style.lineBreakMode = NSLineBreakByWordWrapping;
        style.alignment = NSTextAlignmentLeft;

        NSMutableAttributedString *attrString = [[NSMutableAttributedString alloc] initWithString:str];
        [attrString addAttribute:NSParagraphStyleAttributeName value:style range:NSMakeRange(0, str.length)];
        
        self.lbname.attributedText = attrString;
        
        dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.01 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
            float fheight = [Tools getLabelHeightWithText:self.lbname.text width:self.width font:self.lbname.font.pointSize linHeight:5]+1;
            [self mas_updateConstraints:^(MASConstraintMaker *make) {
                make.height.offset(fheight);
            }];
            self.backHeight(fheight,NO);
        });
    }
    else
    {
        [self showText];
    }
}
-(void)showText
{
    [self endAction];
    [self.imgvb setHidden:NO];
    self.inow = 0;
    NSTimer *timer = [NSTimer scheduledTimerWithTimeInterval:self.fspeed>0?self.fspeed:0.02 target:self selector:@selector(textSpeedAppend) userInfo:nil repeats:YES];
    _timer = timer;
    [[NSRunLoop mainRunLoop] addTimer:self.timer forMode:NSRunLoopCommonModes];
}
-(void)textSpeedAppend
{
    if(self.inow+1>self.strValue.length)
    {
        [self.timer invalidate];
        self.timer = nil;
        [self.imgvb setHidden:YES];
        self.backHeight(self.height,YES);
        return;
    }
    
    NSString *str = [self.strValue substringToIndex:self.inow];
    ///行间距
    NSMutableParagraphStyle *style = [NSMutableParagraphStyle new];
    style.lineSpacing = 5;
    style.lineBreakMode = NSLineBreakByWordWrapping;
    style.alignment = NSTextAlignmentLeft;

    NSMutableAttributedString *attrString = [[NSMutableAttributedString alloc] initWithString:str];
    [attrString addAttribute:NSParagraphStyleAttributeName value:style range:NSMakeRange(0, str.length)];
    
    
    self.lbname.attributedText = attrString;
    self.inow++;
    
    float fheight = [Tools getLabelHeightWithText:self.lbname.text width:self.width font:self.lbname.font.pointSize linHeight:5]+1;
    [self mas_updateConstraints:^(MASConstraintMaker *make) {
        make.height.offset(fheight);
    }];
    self.backHeight(fheight,NO);
    
    CGPoint point = [self boundingRectForLastCharacterInLabel:self.lbname];
    if(point.x>0&&point.y>0)
    {
        self.imgvb.center = point;
    }
    
    
    NSLog(@"%@",NSStringFromCGPoint(point));
    
}
- (CGPoint)boundingRectForLastCharacterInLabel:(UILabel *)label {
    NSString *text = label.text;
//    
//    NSMutableParagraphStyle *style = [NSMutableParagraphStyle new];
//    style.lineSpacing = 5;
//    style.lineBreakMode = NSLineBreakByWordWrapping;
//    style.alignment = NSTextAlignmentLeft;
//    
//    NSDictionary *attributes = @{NSFontAttributeName: label.font,NSParagraphStyleAttributeName:style}; // 设置字体属性
//    
//    CGRect sz = [text boundingRectWithSize:CGSizeMake(MAXFLOAT, 20) options:NSStringDrawingUsesLineFragmentOrigin attributes:attributes context:nil];
//    
//    CGRect linesSz = [text boundingRectWithSize:CGSizeMake(label.frame.size.width, MAXFLOAT) options:NSStringDrawingUsesLineFragmentOrigin attributes:attributes context:nil];
//    
//    [text sizeWithFont:label.font constrainedToSize:CGSizeMake(MAXFLOAT, 20) lineBreakMode:NSLineBreakByWordWrapping];
//    
//    CGPoint lastPoint;
//    if(sz.size.height>=linesSz.size.height)
//    {
//        lastPoint = CGPointMake(label.frame.origin.x+sz.size.width, label.frame.origin.y+9);
//    }
//    else
//    {
//        lastPoint = CGPointMake(label.frame.origin.x+(int)sz.size.width%(int)linesSz.size.width, linesSz.size.height-sz.size.height+9);
//    }
    
    [self configWithLabel:label];
    CGRect rect = [self characterRectAtIndex:text.length-1];
    CGPoint lastPoint = CGPointMake(rect.origin.x+rect.size.width/2.0, rect.origin.y+rect.size.height/2.0);
    return lastPoint;
}

-(void)configWithLabel:(UILabel *)label
{
    self.textContainer.size = label.bounds.size;
    self.textContainer.lineFragmentPadding = 0;
    self.textContainer.maximumNumberOfLines = label.numberOfLines;
    self.textContainer.lineBreakMode = label.lineBreakMode;
    
    NSMutableAttributedString *attributedText = [[NSMutableAttributedString alloc] initWithString:label.text];
    NSRange textRange = NSMakeRange(0, attributedText.length);
    [attributedText addAttribute:NSFontAttributeName value:label.font range:textRange];

    NSMutableParagraphStyle *paragraphStyle = [NSMutableParagraphStyle new];
    paragraphStyle.lineSpacing = 5;
    paragraphStyle.lineBreakMode = NSLineBreakByWordWrapping;
    paragraphStyle.alignment = label.textAlignment;

    [attributedText addAttribute:NSParagraphStyleAttributeName value:paragraphStyle range:textRange];
    [self.textStorage setAttributedString:attributedText];
}
-(CGRect)characterRectAtIndex:(NSUInteger)charIndex
{
    if (charIndex >= self.textStorage.length) {
        return CGRectZero;
    }
    NSRange characterRange = NSMakeRange(charIndex, 1);
    NSRange glyphRange = [self.layoutManager glyphRangeForCharacterRange:characterRange actualCharacterRange:nil];
    return [self.layoutManager boundingRectForGlyphRange:glyphRange inTextContainer:self.textContainer];
}

-(void)endAction
{
    if(self.timer)
    {
        [self.timer invalidate];
        self.timer = nil;
    }
}
@end