duoshoubang/FirstLink/Compoments/详情模块/商品详情/View/FKProSegment...

//
//  FKProSegmentView.m
//  FirstLink
//
//  Created by jack on 16/8/13.
//  Copyright © 2016年 FirstLink. All rights reserved.
//

#import "FKProSegmentView.h"

@interface FKProSegmentView ()

@property (nonatomic, strong) UILabel   *leftLabel;
@property (nonatomic, strong) UILabel   *rightLabel;
@property (nonatomic, strong) UIView    *horLine;

@property (nonatomic, copy) void(^indexChange)(NSInteger index);

@property (nonatomic, strong) MASConstraint *constToCenterX;

@end

@implementation FKProSegmentView

- (instancetype)initWithIndexChange:(void(^)(NSInteger index))indexChange{
    if (self = [super init]) {
        [self addAllSubviews];
        self.indexChange = indexChange;
    }
    return self;
}

- (void)addAllSubviews{
    
    self.backgroundColor = [UIColor whiteColor];
    
    UIButton *leftBtn = [UIButton buttonWithType:UIButtonTypeCustom];
    UIButton *rightBtn = [UIButton buttonWithType:UIButtonTypeCustom];
    
    leftBtn.tag = 0;
    rightBtn.tag = 1;
    
    [leftBtn addTarget:self
                action:@selector(changeIndex:)
      forControlEvents:UIControlEventTouchUpInside];
    [rightBtn addTarget:self
                action:@selector(changeIndex:)
      forControlEvents:UIControlEventTouchUpInside];
    
    [self addSubview:self.leftLabel];
    [self addSubview:self.rightLabel];
    [self addSubview:self.horLine];
    [self addSubview:leftBtn];
    [self addSubview:rightBtn];
    
    [self.leftLabel mas_makeConstraints:^(MASConstraintMaker *make) {
        make.right.equalTo(self.mas_centerX).offset(- 50);
        make.centerY.equalTo(self);
    }];
    
    [self.rightLabel mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.equalTo(self.mas_centerX).offset(50);
        make.centerY.equalTo(self);
    }];
    
    [self.horLine mas_makeConstraints:^(MASConstraintMaker *make) {
        self.constToCenterX = make.centerX.equalTo(self.leftLabel);
        make.bottom.equalTo(self).offset(- 5);
        make.size.mas_equalTo(CGSizeMake(60, 2));
    }];
    
    [leftBtn mas_makeConstraints:^(MASConstraintMaker *make) {
        make.left.top.bottom.equalTo(self);
        make.right.equalTo(self.mas_centerX);
    }];
    
    [rightBtn mas_makeConstraints:^(MASConstraintMaker *make) {
        make.right.top.bottom.equalTo(self);
        make.left.equalTo(self.mas_centerX);
    }];

}

- (void)changeIndex:(UIButton *)sender{
    
    if (sender.tag == self.horLine.tag) return;
    
    self.leftLabel.textColor = UIColorFromRGB(0x666666);
    self.rightLabel.textColor = UIColorFromRGB(0x666666);
    
    UILabel *targetLabel = self.leftLabel;
    if (sender.tag == 1) targetLabel = self.rightLabel;
    
    targetLabel.textColor = UIColorFromRGB(0x333333);
    
    
    [self.horLine mas_remakeConstraints:^(MASConstraintMaker *make) {
        make.centerX.equalTo(targetLabel);
        make.bottom.equalTo(self).offset(- 5);
        make.size.mas_equalTo(CGSizeMake(60, 2));
    }];
//    self.constToCenterX.equalTo(targetLabel);
    self.horLine.tag = sender.tag;
    
    if (self.indexChange) {
        self.indexChange(sender.tag);
    }
}

- (NSInteger)currentIndex{
    return self.horLine.tag;
}

- (UILabel *)leftLabel{
    if (_leftLabel == nil) {
        _leftLabel = [[UILabel alloc]init];
        _leftLabel.textColor = UIColorFromRGB(0x333333);
        _leftLabel.font = [UIFont systemFontOfSize:14];
        _leftLabel.text = @"商品详情";
    }
    return _leftLabel;
}

- (UILabel *)rightLabel{
    if (_rightLabel == nil) {
        _rightLabel = [[UILabel alloc]init];
        _rightLabel.textColor = UIColorFromRGB(0x666666);
        _rightLabel.font = [UIFont systemFontOfSize:14];
        _rightLabel.text = @"温馨提示";
    }
    return _rightLabel;
}

- (UIView *)horLine{
    if (_horLine == nil) {
        _horLine = [[UIView alloc]init];
        _horLine.backgroundColor = UIColorFromRGB(0xff6362);
        _horLine.tag = 0;
    }
    return _horLine;
}
@end