//
//  GIGaQuestionSlider.m
//  GIGA
//
//  Created by lianxiang on 2018/9/11.
//  Copyright © 2018年 com.giga.ios. All rights reserved.
//

#import "GIGaQuestionSlider.h"
#import "UIColor+HexColor.h"
#define thumbBound_x 10
#define thumbBound_y 20

@interface GIGaQuestionSlider()

{
    CGRect _lastBounds;
}

@end

@implementation GIGaQuestionSlider

- (instancetype)initWithFrame:(CGRect)frame type:(GIGaQuestionSliderType)type
{
    self = [super initWithFrame:frame];
    if (self) {
        
        self.minimumValue = 0.0;
        self.maximumValue = 1.0;
        

        [self creatSubView:type];
    }
    
    return self;
}
-(void)creatSubView:(GIGaQuestionSliderType)type{
    [self thumbimageView];
    
    switch (type) {
        case GIGaQuestionSliderTypeGray:
            {
                [self createUI];
            }
            
            break;
        case GIGaQuestionSliderTypeGradient:
        {
            [self creatGradient];
        }
            break;

        default:
            break;
    }
}

-(void)creatGradient{
    
    self.minimumTrackTintColor=[UIColor clearColor];
    self.maximumTrackTintColor=[UIColor clearColor];
    
    NSArray *colorArr = @[(id)[[UIColor colorWithHex:0xFFFFFF] CGColor],
                        (id)[[UIColor colorWithHex:0xFFF3E4] CGColor],
                        (id)[[UIColor colorWithHex:0xFBC37B] CGColor]];
    NSArray *colorLocationArray = @[@0.0, @0.5, @1.0];
    CAGradientLayer * gradientLayer =  [CAGradientLayer layer];
    gradientLayer.frame = self.bounds;
    gradientLayer.masksToBounds = YES;
    gradientLayer.cornerRadius = self.frame.size.height /2 ;
    gradientLayer.borderWidth = 1;
    gradientLayer.borderColor =GIGARGB(215, 215, 215, 1).CGColor;
    
    [gradientLayer setLocations:colorLocationArray];
    [gradientLayer setColors:colorArr];
    [gradientLayer setStartPoint:CGPointMake(0, 0)];
    [gradientLayer setEndPoint:CGPointMake(1, 0)];
    [self.layer addSublayer:gradientLayer];
    
    
}

-(void)createUI{
    
    self.minimumValue = 0.0;
    self.maximumValue = 1.0;
//    self.minimumTrackTintColor = GIGARGB(216,216, 216, 1);
//    self.maximumTrackTintColor = GIGARGB(216,216, 216, 1);
    self.minimumTrackTintColor = GIGAUIColorFromRGBA(0xEA4D4D);
    self.maximumTrackTintColor = GIGAUIColorFromRGBA(0xEA4D4D);
    
}

-(CGRect)trackRectForBounds:(CGRect)bounds
{
    bounds.origin.x = bounds.origin.x;
    bounds.origin.y = bounds.origin.y;
    bounds.size.height = bounds.size.height;
    bounds.size.width = bounds.size.width;
    return  bounds;
    
}

-(void)thumbimageView{
    
    [self setThumbImage:[self OriginImage:[UIImage imageNamed:@"btn_slider_thumb"] scaleToSize:CGSizeMake(40, 40)] forState:UIControlStateNormal];
    [self setThumbImage:[self OriginImage:[UIImage imageNamed:@"btn_slider_thumb"] scaleToSize:CGSizeMake(40, 40)] forState:UIControlStateHighlighted];
}

-(UIImage*) OriginImage:(UIImage*)image scaleToSize:(CGSize)size

{
    UIGraphicsBeginImageContext(size);//size为CGSize类型，即你所需要的图片尺寸
    [image drawInRect:CGRectMake(0,0, size.width, size.height)];
    
    UIImage* scaledImage =UIGraphicsGetImageFromCurrentImageContext();
    
    UIGraphicsEndImageContext();
    
    return scaledImage;
    
}

// 扩大thumb 触控区域
- (CGRect)thumbRectForBounds:(CGRect)bounds trackRect:(CGRect)rect value:(float)value

{
    rect.origin.x = rect.origin.x;
    rect.size.width = rect.size.width ;
    CGRect result = [super thumbRectForBounds:bounds trackRect:rect value:value];
    
    _lastBounds = result;
    return result;
    
}

- (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event{
    
    UIView *result = [super hitTest:point withEvent:event];
    
    if (point.x < 0 || point.x > self.bounds.size.width){
        
        return result;
        
    }
    
    if ((point.y >= -thumbBound_y) && (point.y < _lastBounds.size.height + thumbBound_y)) {
        float value = 0.0;
        value = point.x - self.bounds.origin.x;
        value = value/self.bounds.size.width;
        
        value = value < 0? 0 : value;
        value = value > 1? 1: value;
        
        value = value * (self.maximumValue - self.minimumValue) + self.minimumValue;
        [self setValue:value animated:YES];
    }
    return result;
    
}

- (BOOL)pointInside:(CGPoint)point withEvent:(UIEvent *)event{
    BOOL result = [super pointInside:point withEvent:event];
    if (!result && point.y > -10) {
        if ((point.x >= _lastBounds.origin.x - thumbBound_x) && (point.x <= (_lastBounds.origin.x + _lastBounds.size.width + thumbBound_x)) && (point.y < (_lastBounds.size.height + thumbBound_y))) {
            result = YES;
        }
        
    }
    return result;
}

@end