JSJP_School/LN_School/RatingBar/RatingBar.m

//
//  RatingBar.m
//  MyRatingBar
//
//  Created by Leaf on 14-8-28.
//  Copyright (c) 2014年 Leaf. All rights reserved.
//

// 版权属于原作者
// http://code4app.com (cn) http://code4app.net (en)
// 发布代码于最专业的源码分享网站: Code4App.com

#import "RatingBar.h"
#define ZOOM 0.8f
@interface RatingBar()
@property (nonatomic,strong) UIView *bottomView;
@property (nonatomic,strong) UIView *topView;
@property (nonatomic,assign) CGFloat starWidth;
@end

@implementation RatingBar

- (id)initWithFrame:(CGRect)frame Flag:(BOOL)flag
{
    self = [super initWithFrame:frame];
    if (self) {
        // Initialization code
        self.backgroundColor = [UIColor whiteColor];
        self.bottomView = [[UIView alloc] initWithFrame:self.bounds];
        self.topView = [[UIView alloc] initWithFrame:CGRectZero];
        
//        self.topView.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin;
//        self.bottomView.autoresizingMask = UIViewAutoresizingFlexibleLeftMargin;
        
        
        [self addSubview:self.bottomView];
        [self addSubview:self.topView];
        
        self.topView.clipsToBounds = YES;
        self.topView.userInteractionEnabled = NO;
        self.bottomView.userInteractionEnabled = NO;
        self.userInteractionEnabled = YES;
        
        UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tap:)];
        UIPanGestureRecognizer *pan = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(pan:)];
        [self addGestureRecognizer:tap];
        [self addGestureRecognizer:pan];
        
        //
        if (flag) {
            CGFloat width = frame.size.width/5.0;
            self.starWidth = width;
            for(int i = 0;i<5;i++){
                UIImageView *img = [[UIImageView alloc] initWithFrame:CGRectMake(i*width, 0, width*ZOOM, width*ZOOM)];
                img.image = [UIImage imageNamed:@"bt_star_a"];
                [self.bottomView addSubview:img];
                UIImageView *img2 = [[UIImageView alloc] initWithFrame:img.frame];
                img2.center = img.center;
                img2.image = [UIImage imageNamed:@"bt_star_b"];
                [self.topView addSubview:img2];
            }

        }else{
            CGFloat width = frame.size.width/7.0;
            self.starWidth = width;
            for(int i = 0;i<5;i++){
                UIImageView *img = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, width*ZOOM, width*ZOOM)];
                img.center = CGPointMake((i+1.5)*width, frame.size.height/2);
                img.image = [UIImage imageNamed:@"bt_star_a"];
                [self.bottomView addSubview:img];
                UIImageView *img2 = [[UIImageView alloc] initWithFrame:img.frame];
                img2.center = img.center;
                img2.image = [UIImage imageNamed:@"bt_star_b"];
                [self.topView addSubview:img2];
            }
        }
        
        self.enable = YES;
        
    }
    return self;
}
-(void)setViewColor:(UIColor *)backgroundColor{
    if(_viewColor!=backgroundColor){
        self.backgroundColor = backgroundColor;
        self.topView.backgroundColor = backgroundColor;
        self.bottomView.backgroundColor = backgroundColor;
    }
}
-(void)setStarNumber:(NSInteger)starNumber{
    if(_starNumber!=starNumber){
        _starNumber = starNumber;
        self.topView.frame = CGRectMake(0, 0, self.starWidth*(starNumber+1), self.bounds.size.height);
        
        if (starNumBlock) {
            starNumBlock([NSString stringWithFormat:@"%d",(int)starNumber]);
        }
    }
}
-(void)tap:(UITapGestureRecognizer *)gesture{
    if(self.enable){
        CGPoint point = [gesture locationInView:self];
        NSInteger count = (int)(point.x/self.starWidth)+1;
        self.topView.frame = CGRectMake(0, 0, self.starWidth*count, self.bounds.size.height);
        if(count>5){
            _starNumber = 5;
        }else{
            _starNumber = count-1;
        }
        
        if (starNumBlock) {
            starNumBlock([NSString stringWithFormat:@"%d",(int)_starNumber]);
        }
    }
}
-(void)pan:(UIPanGestureRecognizer *)gesture{
    if(self.enable){
        CGPoint point = [gesture locationInView:self];
        NSInteger count = (int)(point.x/self.starWidth);
        if(count>=0 && count<=5 && _starNumber!=count){
            self.topView.frame = CGRectMake(0, 0, self.starWidth*(count+1), self.bounds.size.height);
            _starNumber = count;
            
            if (starNumBlock) {
                starNumBlock([NSString stringWithFormat:@"%d",(int)_starNumber]);
            }
        }
    }
}


- (void)changeStarNumberBlock:(MyBlockType)starBlock
{
    starNumBlock = starBlock;
}

/*
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect
{
    // Drawing code
}
*/

@end