//
//  HDLOnOACCurtainSeekBar.m
//  HDL_Widget_iOS
//
//  Created by 陈嘉乐 on 2020/6/15.
//  Copyright © 2020 JLChen. All rights reserved.
//

#import "HDLOnOACCurtainSeekBar.h"
#import "HDLUtlisXM.h"
//
//#define APP_DEFAULT_BG      HEXCOLOR(0xE5E5ED)
////#define APP_DEFAULT_BG_LINE      [UIColor colorWithRed:73/255.0f green:87/255.0f blue:128/255.0f alpha:1.0f]
//#define APP_DEFAULT_BAR        HEXCOLOR(0xCBCEE5)

#define APP_DEFAULT_OFFLINE_COLOR       HEXCOLORA(0xE9E9EC,0.8)

@interface HDLOnOACCurtainSeekBar ()



/**
 是否正在移动
 */
@property (nonatomic, assign) BOOL bTouchMove;

/**
 进度单位符号
 */
@property (nonatomic, strong) NSString *mProgressBarUnitSring;

/**
 最小值
 */
@property (nonatomic, assign) float mMinValue;

/**
 最大值
 */
@property (nonatomic, assign) float mMaxValue;


/**
 边距
 */
@property (nonatomic, assign) int mCurtainPadding;

/**
 
 */
//@property (nonatomic, strong) UIImageView *bgImageView;



/**
 顶部padding
 */
@property (nonatomic, assign) int mCurtainPaddingTop;

/**
 是否离线
 */
@property (nonatomic, assign) BOOL isOffline;


@end


@implementation HDLOnOACCurtainSeekBar{
    
    int _mMoveCount;
    
    CGPoint _mCenterPoint;  //圆心坐标
    
    bool _bIsInCurtainProgress;
    
    CGFloat _mTopImageHeight;
    CGFloat _mCurtainHeight;
    CGFloat _mCurtainWidth;
    CGFloat _mCurtainWidthHalf;
    
    CGFloat _mCurtainStartX;
    CGFloat _mCurtainEndX;
    
    float _mPercent;
    //    CGFloat _mCurtainPadding;
    CGFloat _mButtonWidth;
    CGFloat _mCurtainX;
    CGFloat _mCornerRadius;
    UIImage *_curtainImage;
    UIImage *_curtainImage_close;
    UIImage *_bgImage;
    //    UIImage *_bgTopImage;
    BOOL bDownLeft;
    
}

-(instancetype)initWithFrame:(CGRect)frame{
    self = [super initWithFrame:frame];
    if (self) {
        _isClickable = YES;
        _mMoveCount = 0;
        
        _mProgress = 0;
        _mPercent = 0;
        _mMaxValue = 100.0f;
        _mMinValue = 0.0f;
        _mCornerRadius = 0;
        
        _mProgressTextColor = [UIColor blackColor];
        _mProgressTextSize = 15;
        _mProgressBarUnitSring = @"%";
        _isProgressTextShow = YES;
        _mCurtainPaddingTop = 6;
        _mCurtainPaddingTop = 14;
        [self refreshFrame];
        _curtainImage = [UIImage imageNamed:@"ic_wd_on_curtain_h_progress"];
        _curtainImage_close = [UIImage imageNamed:@"ic_wd_on_curtain_h_progress_close"];
        self.backgroundColor = [UIColor clearColor];
        _bgImage = [UIImage imageNamed:@"ic_wd_on_curtain_h_bg"];
        //        _bgTopImage =[UIImage imageNamed:@"ic_wd_on_curtain_h_top"];
    }
    
    return  self;
}



/**
 刷新布局，更新关键值
 
 */
-(void)refreshFrame{
    _mCenterPoint = CGPointMake(self.frame.size.width/2, self.frame.size.height/2);
    [self onCurtainSizeChange];
}

/**
 刷新布局，更新关键值
 
 */
-(void)onCurtainSizeChange{
    _mCurtainPadding = self.frame.size.width * 6 / 248 - 1;
    _mCurtainPaddingTop = self.frame.size.height * 14 / 146;
    _mCurtainWidth = self.frame.size.width - _mCurtainPadding*2;
    _mCurtainStartX = _mCurtainPadding;
    _mCurtainEndX = _mCurtainWidth + _mCurtainStartX;
    _mButtonWidth = self.frame.size.width * 56/ 250;
    _mCurtainWidthHalf = _mCurtainWidth/2;
    _mCurtainHeight = self.frame.size.height - _mCurtainPaddingTop;
}


#pragma mark drawRect 绘制图形
-(void)drawRect:(CGRect)rect{
    [super drawRect:rect];
    CGContextRef ctx = UIGraphicsGetCurrentContext();
    //将当前图形状态推入堆栈
    CGContextSaveGState(ctx);
    //*********绘制背景*********
    [self drawBackIamge];
    //*********绘制动态的进度条*********
    [self drawProgressBar:ctx];
    //*********绘制显示进度值文字*********
    [self drawProgressText:ctx];
    //*********绘制按钮图片*********
    [self drawImageButton:ctx];
    //    //*********如果离线绘制离线背景遮挡层*********
    //    [self drawOfflineView:ctx];
    //把堆栈顶部的状态弹出
    CGContextRestoreGState(ctx);
    
}

/**
 如果离线绘制离线背景遮挡层
 
 @param ctx 画布
 */
-(void)drawOfflineView:(CGContextRef)ctx{
    if(_isOffline){
        CGRect drawRect2 = CGRectMake(0, 0, self.frame.size.width, self.frame.size.height);
        UIBezierPath *path3 = [UIBezierPath bezierPathWithRoundedRect:drawRect2 cornerRadius:5];
        [APP_DEFAULT_OFFLINE_COLOR set];
        CGContextAddPath(ctx, path3.CGPath);
        CGContextDrawPath(ctx, kCGPathFill);
    }
}

/**
 绘制背景图
 */
-(void)drawBackIamge{
    //绘制背景图
    CGRect rectBgImage = CGRectMake(0, 0, self.frame.size.width, self.frame.size.height);
    [_bgImage drawInRect:rectBgImage];
}

/**
 绘制进度条
 
 @param ctx 画布
 */
-(void)drawProgressBar:(CGContextRef)ctx{
    
    //*******绘制剪裁限制显示区域*********
    CGRect drawRect2 = CGRectMake(_mCurtainStartX, _mCurtainPaddingTop, _mCurtainWidth, _mCurtainHeight);
    UIBezierPath *path2 = [UIBezierPath bezierPathWithRoundedRect:drawRect2 cornerRadius:0];
    //    [APP_DEFAULT_BG set];
    CGContextAddPath(ctx, path2.CGPath);
    // 剪裁路径
    CGContextClip(ctx);
    
    _mCurtainX =  _mPercent * _mCurtainWidthHalf + _mCurtainPadding;
    
    //绘制按钮的图片
    if(_mPercent == 1){
        CGRect rectImage = CGRectMake(_mCurtainPadding, _mCurtainPaddingTop, _mCurtainWidth, _mCurtainHeight);
        if(_isOffline){
            [_curtainImage_close drawInRect:rectImage];
        }else{
            [_curtainImage drawInRect:rectImage];
        }
        
    }else{
        
        CGRect rectImage = CGRectMake(_mCurtainX - _mCurtainWidth , _mCurtainPaddingTop, _mCurtainWidth, _mCurtainHeight);
        if(_isOffline){
            [_curtainImage_close drawInRect:rectImage];
        }else{
            [_curtainImage drawInRect:rectImage];
        }
        
        CGRect rectImageRight = CGRectMake(self.frame.size.width - _mCurtainX, _mCurtainPaddingTop, _mCurtainWidth, _mCurtainHeight);
        if(_isOffline){
            [_curtainImage_close drawInRect:rectImageRight];
        }else{
            [_curtainImage drawInRect:rectImageRight];
        }
    }
    
}



/**
 绘制进度显示值文字
 
 @param ctx 画布
 */
-(void)drawProgressText:(CGContextRef)ctx{
    if(_isProgressTextShow){
        [self drawString:[NSString stringWithFormat:@"%d%@", _mProgress, _mProgressBarUnitSring] outsidePoint:_mCenterPoint];
    }
}


/**
 绘制按钮的图片
 
 @param ctx 画布
 */
-(void)drawImageButton:(CGContextRef)ctx {
    CGContextRestoreGState(ctx);// 恢复到之前的context
    CGContextSaveGState(ctx);
    
    //绘制按钮的图片
    UIImage *image = [UIImage imageNamed:@"ic_wd_on_curtain_h_open"];
    CGRect rectImage = CGRectMake(_mCurtainX  - _mButtonWidth/2, self.frame.size.height/2 - _mButtonWidth/2, _mButtonWidth, _mButtonWidth);
    [image drawInRect:rectImage];
    
    
}


///**
// 绘制Top的图片
// */
//-(void)drawTopImage{
//    CGRect rectImage = CGRectMake(0, 0, self.frame.size.width, _mTopImageHeight);
//    [_bgTopImage drawInRect:rectImage];
//
//}



/**
 drawString 现在当前进度值
 @param mText 显示文本
 @param outsidePoint 坐标
 */
- (void) drawString:(NSString *)mText outsidePoint:(CGPoint)outsidePoint{
    NSMutableParagraphStyle *paragraph = [[NSMutableParagraphStyle alloc] init];
    paragraph.alignment = NSTextAlignmentCenter;
    NSDictionary *dic = @{NSFontAttributeName : [UIFont systemFontOfSize:_mProgressTextSize],
                          NSForegroundColorAttributeName : _mProgressTextColor,
                          NSParagraphStyleAttributeName : paragraph
    };
    
    //    CGRect textRect = CGRectMake(outsidePoint.x, outsidePoint.y, 80, 20);
    //    [mText drawInRect:textRect withAttributes:dic];
    
    //2019-08-15 修改文字绘制方法，最终实现文本居中效果
    CGSize textSize = [mText sizeWithAttributes:dic];
    CGPoint textPoint = CGPointMake(outsidePoint.x - textSize.width/2, outsidePoint.y - textSize.height/2 - _mButtonWidth/2);//根据中点坐标绘制
    [mText drawAtPoint:textPoint withAttributes:dic];
    
}





#pragma mark Touch Event 点击事件
-(BOOL) beginTrackingWithTouch:(UITouch *)touch withEvent:(UIEvent *)event {
    [super beginTrackingWithTouch:touch withEvent:event];
    if(!_isClickable) return YES;//禁止点击
    _bTouchMove = NO;
    _mMoveCount = 0;
    
    //    CGPoint startPoint = [touch locationInView:self];
    //    _bIsInArcProgress = [self getStartPointIsInArcProgress:startPoint];//判断开始坐标是否在可点击区域
    CGPoint startPoint = [touch locationInView:self];
    bDownLeft =  (startPoint.x- self.frame.size.width/2) < 0;
    
    _bIsInCurtainProgress = YES;//不限制点击区域
    [self.mProgressChangedDelegate onStartTrackingTouch];
    return YES;
}

-(void)endTrackingWithTouch:(UITouch *)touch withEvent:(UIEvent *)event{
    [super endTrackingWithTouch:touch withEvent:event];
    if(!_isClickable) return;//禁止点击
    if(!_bTouchMove){//没移动，仅点击
        CGPoint lastPoint = [touch locationInView:self];
        [self getCurrentProgressWithLastPoint:lastPoint];
        [self sendActionsForControlEvents:UIControlEventValueChanged];
    }
    [self.mProgressChangedDelegate onStopTrackingTouch:_mProgress];
}


-(BOOL)continueTrackingWithTouch:(UITouch *)touch withEvent:(UIEvent *)event {
    [super continueTrackingWithTouch:touch withEvent:event];
    if(!_isClickable) return YES;//禁止点击
    if(_mMoveCount < 2){
        _mMoveCount++;
    }else{
        _bTouchMove = YES;  //开始移动
    }
    
    if(_bIsInCurtainProgress){//如果刚开始点击的坐标在可点击区域
        CGPoint lastPoint = [touch locationInView:self];
        [self getCurrentProgressWithLastPoint:lastPoint];
    }
    [self sendActionsForControlEvents:UIControlEventValueChanged];
    return YES;
}


/**
 根据坐标计算出当前进度百分比和对应的进度值
 
 @param point 当前坐标
 */
-(void)getCurrentProgressWithLastPoint:(CGPoint)point {
    
    if(bDownLeft){
        float progressX = point.x - _mCurtainPadding;
        _mPercent = progressX / _mCurtainWidthHalf;
        
    }else{
        float progressX = point.x - self.frame.size.width/2;
        _mPercent = 1 - progressX / _mCurtainWidthHalf;
        
    }
    
    
    //        NSLog(@"point.y:%f   _mCurtainHeight:%f",point.x, _mCurtainWidthHalf);
    //        NSLog(@"_mPercent:%f",_mPercent);
    //
    if(_mPercent > 1){
        _mPercent = 1;
    }else if(_mPercent < 0){
        _mPercent = 0;
    }
    
    _mProgress = (1 -_mPercent) * (_mMaxValue - _mMinValue) + _mMinValue;
    
    if(_bTouchMove){
        [self.mProgressChangedDelegate onProgressChanged:_mProgress];
    }
    
    [self setNeedsDisplay];
}


/**
 根据进度值，计算当前 _mProgressAngle值
 
 @param mProgress 进度值
 */
-(void)setSeekBarProgressToValue:(int)mProgress{
    if(mProgress < _mMinValue){
        mProgress = _mMinValue;
    }
    if(mProgress > _mMaxValue){
        mProgress = _mMaxValue;
    }
    _mProgress = mProgress;
    _mPercent = 1 - (_mProgress - _mMinValue) / (_mMaxValue - _mMinValue);
    [self.mProgressChangedDelegate onProgressChanged:_mProgress];
}

#pragma mark 设置进度条位置
/**
 设置进度值
 
 @param mProgress 进度值
 */
-(void)setProgress:(int)mProgress{
    [self setSeekBarProgressToValue:mProgress];
    [self setNeedsDisplay];
}


/**
 设置进度显示值单位
 
 @param mString 单位字符
 */
-(void)setProgressBarUnitSring:(NSString *)mString{
    _mProgressBarUnitSring = mString;
}


/**
 设置最大值最小值
 
 @param mMinValue 最小值
 @param mMaxValue 最大值
 */
-(void)setMinAndMaxValue:(float)mMinValue mMaxValue:(float)mMaxValue{
    if(mMinValue < mMaxValue){
        _mMinValue = mMinValue;
        _mMaxValue = mMaxValue;
    }else{
        _mMinValue = mMaxValue;
        _mMaxValue = mMinValue;
    }
    _mProgress = _mMinValue;
    _mPercent = 0.0f;
}


/**
 重置布局
 
 @param mCGRect 布局
 
 */
-(void)initWithFrameSeekBar:(CGRect) mCGRect{
    self.frame = mCGRect;
    [self refreshFrame];
}


///**
// 设置边距
// */
//-(void)setCurtainPadding:(int)Padding{
//    _mCurtainPadding = Padding;
//    [self onCurtainSizeChange];
//}
//
//
///**
// 设置顶部边距
// */
//-(void)setCurtainPaddingTop:(int)Padding{
//    _mCurtainPaddingTop = Padding;
//    [self onCurtainSizeChange];
//}

/**
 设置是否离线
 */
-(void)setOffline:(BOOL)isOffline{
    _isOffline = isOffline;
    _isClickable = !_isOffline;
    [self setNeedsDisplay];
}

/**
 获取坐标 X值
 */
-(CGFloat)getProgressX{
    return _mCurtainX;
}

@end