//
//  TFSliderView.m
//  TFReader
//
//  Created by 谢腾飞 on 2020/12/25.
//  Copyright © 2020 xtfei_2011@126.com. All rights reserved.
//

#import "TFSliderView.h"
#import <TTRangeSlider/TTRangeSlider.h>

#define point_Height 4
#define ThumbImage_Height 20

@interface TFSliderView ()

@property (nonatomic ,strong) TTRangeSlider *rangeSlider;
@property (nonatomic ,assign) NSUInteger cutPointCout;
@property (nonatomic ,strong) UIImageView *leftIconView;
@property (nonatomic ,strong) UIImageView *rightIconView;

@end

@implementation TFSliderView

- (instancetype)initWithFrame:(CGRect)frame sliderCutPointCount:(NSUInteger)cutPointCount
{
    if (self = [super initWithFrame:frame]) {
        
        self.cutPointCout = cutPointCount;
        [self createSubViews];
    }
    return self;
}

- (void)createSubViews
{
    self.leftIconView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, self.bounds.size.height, self.bounds.size.height)];
    self.leftIconView.bounds = CGRectMake(0, 0, CGRectGetWidth(self.leftIconView.frame) + 5, CGRectGetHeight(self.leftIconView.frame) + 5);
    [self addSubview:self.leftIconView];
    
    self.rangeSlider = [[TTRangeSlider alloc] initWithFrame:CGRectMake(0, 0, self.bounds.size.width - 2 * self.bounds.size.height, 10)];
    self.rangeSlider.center = CGPointMake(self.bounds.size.width / 2, self.bounds.size.height / 2);
    self.rangeSlider.handleImage = [UIImage imageNamed:@"book_menu_slider_icon"];
    self.rangeSlider.minValue = CGFLOAT_MIN;
    self.rangeSlider.maxValue = self.cutPointCout <= 0 ? 10 : self.cutPointCout;
    self.rangeSlider.selectedMinimum = CGFLOAT_MIN;
    self.rangeSlider.selectedMaximum = self.cutPointCout <= 0 ? 10 : self.cutPointCout;
    self.rangeSlider.hideLabels = YES;
    self.rangeSlider.disableRange = YES;
    self.rangeSlider.enableStep = NO;
    self.rangeSlider.step = 1;
    self.rangeSlider.handleDiameter = 20;
    self.rangeSlider.lineHeight = 5;
    self.rangeSlider.selectedHandleDiameterMultiplier = 1.2;
    self.rangeSlider.lineBackGroundColor = kGrayLineColor;
    self.rangeSlider.tintColorBetweenHandles = kMainColor;
    [self.rangeSlider addTarget:self action:@selector(sliderEndChanged:) forControlEvents:UIControlEventValueChanged];
    [self addSubview:self.rangeSlider];
    
    self.rightIconView = [[UIImageView alloc] initWithFrame:CGRectMake(self.bounds.size.width - self.bounds.size.height, 0, self.bounds.size.height, self.bounds.size.height)];
    [self addSubview:self.rightIconView];
}

- (void)sliderEndChanged:(TTRangeSlider *)sender
{
    if ([self.delegate respondsToSelector:@selector(sliderValueEndChanged:slider:)]) {
        [self.delegate sliderValueEndChanged:_invertedValue ? fabs(sender.selectedMaximum - self.cutPointCout):sender.selectedMaximum slider:self];
    }
}

- (void)slider:(UISlider *)sender
{
    sender.value = (int)roundf(sender.value);
}

- (void)setStepSlider:(BOOL)stepSlider
{
    if (stepSlider) {
        
        self.rangeSlider.tintColorBetweenHandles = [UIColor clearColor];
        self.rangeSlider.lineBackGroundColor = [UIColor clearColor];
        self.rangeSlider.enableStep = YES;
        
        NSUInteger buttonNum = self.cutPointCout + 1;       // 每行多少按钮
        CGFloat button_W = point_Height;                    // 按钮宽
        CGFloat button_H = point_Height;                    // 按钮高
        CGFloat margin_X = ThumbImage_Height / 2;           // 第一个按钮的X坐标
        CGFloat margin_Y = (self.rangeSlider.height - point_Height) / 2;        // 第一个按钮的Y坐标
        CGFloat space_X = (self.rangeSlider.width - (3 * margin_X) - point_Height * (self.cutPointCout + 1)) / self.cutPointCout;                               // 按钮间距
        for (NSUInteger i = 0; i < self.cutPointCout + 1; i++) {
            NSUInteger row = i / buttonNum;                 // 行号
            NSUInteger loc = i % buttonNum;                 // 列号
            CGFloat button_X = margin_X + (space_X + button_W) * loc;
            CGFloat button_Y = margin_Y + button_H * row;
            
            UIView *view = [[UIView alloc] initWithFrame:CGRectMake(button_X, button_Y, button_W, button_H)];
            view.backgroundColor = [UIColor blackColor];
            view.layer.cornerRadius = point_Height / 2;
            view.clipsToBounds = YES;
            [self.rangeSlider addSubview:view];
            [self.rangeSlider sendSubviewToBack:view];
        }
    }
}

- (void)setMinimumTintColor:(UIColor *)minimumTintColor
{
    self.rangeSlider.tintColorBetweenHandles = minimumTintColor;
}

- (void)setMaximumTintColor:(UIColor *)maximumTintColor
{
    self.rangeSlider.tintColorBetweenHandles = maximumTintColor;
}

- (void)setLeftImage:(UIImage *)leftImage
{
    self.leftIconView.image = leftImage;
}

- (void)setLeftImageName:(NSString *)leftImageName
{
    self.leftIconView.image = [UIImage imageNamed:leftImageName];
}

- (void)setRightImage:(UIImage *)rightImage
{
    self.rightIconView.image = rightImage;
}

- (void)setRightImageName:(NSString *)rightImageName
{
    self.rightIconView.image = [UIImage imageNamed:rightImageName];
}

- (void)setMinimumValue:(CGFloat)minimumValue
{
    self.rangeSlider.minValue = minimumValue;
}

- (void)setMaximumValue:(CGFloat)maximumValue
{
    self.rangeSlider.maxValue = maximumValue;
}

- (void)setSliderValue:(CGFloat)sliderValue
{
    self.rangeSlider.selectedMaximum = sliderValue;
}

@end