//
//  HDLCurtainSeekBar.m
//  HDL_Widget_iOS
//
//  Created by HDL on 2019/11/4.
//  Copyright © 2019 JLChen. All rights reserved.
//

#import "HDLCurtainSeekBar.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)


@interface HDLCurtainSeekBar ()



/**
 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;

/**
 进度渐变颜色数组
 */
@property (nonatomic, strong) NSArray *mCurtainProgressBarColors;

///**
// 背景线宽
// */
//@property (nonatomic, assign) int mBackLineWidth;

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



@end


@implementation HDLCurtainSeekBar{
    
    int _mMoveCount;
    
    CGPoint _mCenterPoint;  //圆心坐标
    
    bool _bIsInCurtainProgress;
    
    CGFloat _mCurtainHeight;
    CGFloat _mCurtainWidth;
    
    CGFloat _mCurtainStartX;
    CGFloat _mCurtainEndX;
    
    float _mPercent;
    
    CGFloat _mCurtainPadding;
    CGFloat _mButtonWidth;
    CGFloat _mCurtainY;
    
}

-(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 = 2;
        _CurtainPadding = 30;
        _mProgressTextColor = [UIColor blackColor];
        _mProgressTextSize = 15;
        _mProgressBarUnitSring = @"%";
        _isProgressTextShow = YES;
        _topCompensatePadding = 5;
        [self setProgressBarColor:APP_DEFAULT_BAR];
        [self refreshFrame];
        self.backgroundColor = [UIColor clearColor];
    }
    
    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 = _CurtainPadding;
    _mCurtainHeight = self.frame.size.height - _mCurtainPadding*2;
    _mCurtainWidth = self.frame.size.width - _mCurtainPadding*2;
    _mCurtainStartX = _mCurtainPadding;
    _mCurtainEndX = _mCurtainWidth + _mCurtainStartX;
    _mButtonWidth = _mCurtainWidth/4;
}


#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);
//    //*********绘制边框背景*********
//    [self drawBorderPath:ctx];
    //*********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];

    //把堆栈顶部的状态弹出
    CGContextRestoreGState(ctx);
    
}

//
///**
// 绘制边框
//
// @param ctx 画布
// */
//-(void)drawBorderPath:(CGContextRef)ctx{
//    CGRect drawRect = {5+_mBackLineWidth/2, 5+_mBackLineWidth/2, self.frame.size.width-10-_mBackLineWidth, self.frame.size.height-10-_mBackLineWidth};
//
//    UIBezierPath *path = [UIBezierPath bezierPathWithRoundedRect:drawRect cornerRadius:_mCornerRadius];
//    path.lineWidth = _mBackLineWidth;                   //线宽
//    path.lineCapStyle = kCGLineCapRound;     //弯角样式
//    path.lineJoinStyle = kCGLineJoinBevel;   //交点的样式
//    [_mCurtainBorderColor set];
//
//    CGContextSetLineWidth(ctx, _mBackLineWidth);
//    CGContextAddPath(ctx, path.CGPath);
//    CGContextDrawPath(ctx, kCGPathStroke);
//    //    [path stroke];               //边框线颜色
//}


/**
 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, _mCurtainPadding , _mCurtainWidth, _mCurtainHeight );
    UIBezierPath *path2 = [UIBezierPath bezierPathWithRoundedRect:drawRect2 cornerRadius:_mCornerRadius];
//    [APP_DEFAULT_BG set];
    CGContextAddPath(ctx, path2.CGPath);
    // 剪裁路径
    CGContextClip(ctx);

    //*******绘制剪裁限制显示区域*********
    UIBezierPath *path3 = [UIBezierPath bezierPathWithRoundedRect:drawRect2 cornerRadius:_mCornerRadius];
    [APP_DEFAULT_BG set];
    CGContextAddPath(ctx, path3.CGPath);
    CGContextDrawPath(ctx, kCGPathFill);
    

    _mCurtainY =  _mPercent * _mCurtainHeight + _mCurtainPadding;
    
    CGContextBeginPath( ctx );
    //1、添加第一点
    CGContextMoveToPoint( ctx, _mCurtainStartX, _mCurtainPadding);
    CGContextAddLineToPoint( ctx, _mCurtainEndX, _mCurtainPadding);
    CGContextAddLineToPoint( ctx, _mCurtainEndX, _mCurtainY );
    CGContextAddLineToPoint( ctx, _mCurtainStartX, _mCurtainY );

    CGContextClosePath(ctx);
    
    CGContextSetFillColorWithColor( ctx, _mCurtainProgressBarColor.CGColor );

    CGContextDrawPath( ctx, kCGPathFill );
    
}

                      
                      
/**
 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];
    }
}
                      
                      
/**
绘制进度显示值文字
     
@param ctx 画布
*/
-(void)drawImageButton:(CGContextRef)ctx {
    CGContextRestoreGState(ctx);// 恢复到之前的context
    CGContextSaveGState(ctx);
    
    //绘制顶部图片
    UIImage *imageTop = [UIImage imageNamed:@"ic_wd_curtain_bg_top"];
    
    CGRect rectImageTop = CGRectMake(_CurtainPadding - _topCompensatePadding , 0 , _mCurtainWidth+_topCompensatePadding*2, _CurtainPadding+2);
    [imageTop drawInRect:rectImageTop];
    
    
    //绘制按钮的图片
    UIImage *image = [UIImage imageNamed:@"ic_wd_curtain_open"];
    CGRect rectImage = CGRectMake(_mCenterPoint.x-_mButtonWidth/2, _mCurtainY-_mButtonWidth/2 , _mButtonWidth, _mButtonWidth);
    [image 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);//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
    
    _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 {
    
    _mPercent = (point.y - _mCurtainPadding ) / _mCurtainHeight;
    //    NSLog(@"point.y:%f   _mCurtainHeight:%f",point.y,_mCurtainHeight);
    //    NSLog(@"_mPercent:%f",_mPercent);
    //
    if(_mPercent > 1){
        _mPercent = 1;
    }else if(_mPercent < 0){
        _mPercent = 0;
    }

    _mProgress = _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 = (_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];
}



/**
 设置渐变效果
 
 @param mColors 颜色数组
 */
-(void)setProgressBarColors:(NSArray *)mColors{
    
    //    NSArray * colors = [NSArray arrayWithObjects：（id）startColor.CGColor，（id）endColor.CGColor，nil];
    
}



/**
 设置渐变效果
 
 @param startColor 开始颜色
 @param endColor 结束颜色
 */
-(void)setProgressBarColors:(UIColor *)startColor endColor:(UIColor*)endColor{
    //    _mArcProgressBarColors = [NSArray arrayWithObjects（id）startColor.CGColor，（id）endColor.CGColor，nil];
    _mCurtainProgressBarColors =  @[
                                 (id)startColor.CGColor,
                                 (id)endColor.CGColor
                                 ];
}


/**
 设置进度条颜色 单一颜色
 
 @param oneColor 单一颜色
 */
-(void)setProgressBarColor:(UIColor *)oneColor{
    //    //    _mArcProgressBarColors = [NSArray arrayWithObjects（id）startColor.CGColor，（id）endColor.CGColor，nil];
    //    _mCurtainProgressBarColors =  @[
    //                                (id)oneColor.CGColor,
    //                                (id)oneColor.CGColor
    //                                ];
    
    _mCurtainProgressBarColor = oneColor;
}


/**
 设置边距
 */
-(void)setCurtainPadding:(int)Padding{
    _CurtainPadding = Padding;
    [self onCurtainSizeChange];
}
//
///**
// 设置背景边框宽度
// */
//-(void)setBorderWidth:(int)borderWidth{
//    _mBackLineWidth = borderWidth;
//    [self onCurtainSizeChange];
//}




@end