//
//  HDLDiyImageSeekBar.m
//  HDL_Widget_iOS
//
//  Created by HDL on 2019/12/6.
//  Copyright © 2019 JLChen. All rights reserved.
//

#import "HDLDiyImageSeekBar.h"
#import "HDLUtlisXM.h"

#define APP_DEFAULT_OFFLINE_COLOR       HEXCOLORA(0xE9E9EC,0.8)

@interface HDLDiyImageSeekBar ()



/**
 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 DiyBarPadding;

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



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


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

@end


@implementation HDLDiyImageSeekBar{
    
    int _mMoveCount;
    
    CGPoint _mCenterPoint;  //圆心坐标
    
    bool _bIsInDiyBarProgress;
    
    CGFloat _mDiyBarHeight;
    CGFloat _mDiyBarWidth;
    //    CGFloat _mDiyBarWidthHalf;
    
    //    CGFloat _mDiyBarStartX;
    //    CGFloat _mDiyBarEndX;
    
    float _mPercent;
    
    CGFloat _mDiyBarPadding;
    CGFloat _mButtonWidth;
    CGFloat _mDiyBarX;
    CGFloat _mCornerRadius;
    UIImage *_buttonImage;
    
    
    int _mDiyBarPaddingTop;
    int _mDiyBarPaddingBottom;
}

-(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;
        //        mDiyBarPaddingTop = 45;
        _DiyBarPadding = 15;
        
        self.mArcBackBarColor = APP_DEFAULT_OFFLINE_COLOR;
        self.mProgressBarColor = UIColor.yellowColor;
        _mDiyBarHeight = 10;
        _mButtonWidth = _mDiyBarHeight * 2;
        [self refreshFrame];
        
        self.backgroundColor = [UIColor clearColor];
        //        _bgImageView = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, self.frame.size.width, self.frame.size.height)];
        //        [_bgImageView setImage:[UIImage imageNamed:@"ic_wd_DiyBar_roll_bg"]];
        //        [self addSubview:_bgImageView];
        
        //        _DiyBarImage = [UIImage imageNamed:@"ic_wd_DiyBar_roll_progress"];
        _buttonImage = [UIImage imageNamed:@"ic_wd_curtain_h_open"];
        
        //        _bgImage = [UIImage imageNamed:@"ic_wd_DiyBar_roll_bg"];
        
    }
    
    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 onDiyBarSizeChange];
}

/**
 刷新布局，更新关键值
 
 */
-(void)onDiyBarSizeChange{
    _mDiyBarPadding = _DiyBarPadding;
    _mDiyBarWidth = self.frame.size.width - _mDiyBarPadding*2;
    _mDiyBarPaddingTop = (self.frame.size.height - _mDiyBarHeight)/2;
    _mDiyBarPaddingBottom = (self.frame.size.height + _mDiyBarHeight)/2;
    
}


#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];
    
    //*********绘制按钮图片*********
    [self drawImageButton:ctx];
    //*********绘制显示进度值文字*********
    [self drawProgressText: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);
    
}

//
///**
// 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
//    [_mDiyBarBorderColor set];
//
//    CGContextSetLineWidth(ctx, _mBackLineWidth);
//    CGContextAddPath(ctx, path.CGPath);
//    CGContextDrawPath(ctx, kCGPathStroke);
//    //    [path stroke];               //边框线颜色
//}

/**
 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{
    

     _mDiyBarX =  _mPercent * _mDiyBarWidth + _mDiyBarPadding;
    //*******绘制进度条背景*********
    CGRect rectB = CGRectMake(_mDiyBarPadding, _mDiyBarPaddingTop, _mDiyBarWidth, _mDiyBarHeight);
    CGContextSaveGState(ctx);
    UIBezierPath *roundedRect = [UIBezierPath bezierPathWithRoundedRect:rectB cornerRadius:rectB.size.height/2];
    CGContextSetFillColorWithColor(ctx, self.mArcBackBarColor.CGColor);
    [roundedRect fill];
    
    UIBezierPath *roundedClipPath = [UIBezierPath bezierPathWithRect:rectB];
    [roundedClipPath appendPath:roundedRect];
    [roundedRect addClip];
    
    //*******绘制进度条*********
    if(_mPercent <= 0) return;
    
    CGRect drawRect = CGRectMake(_mDiyBarPadding, _mDiyBarPaddingTop, _mDiyBarX - _mDiyBarPadding, _mDiyBarHeight);
    UIBezierPath *roundedRect2 = [UIBezierPath bezierPathWithRoundedRect:drawRect byRoundingCorners:UIRectCornerTopLeft | UIRectCornerBottomLeft cornerRadii: CGSizeMake(drawRect.size.height/2, drawRect.size.height/2)];
    CGContextSetFillColorWithColor(ctx, self.mProgressBarColor.CGColor);
    [roundedRect2 fill];
    
}



/**
 绘制进度显示值文字
 
 @param ctx 画布
 */
-(void)drawProgressText:(CGContextRef)ctx{
    if(_isProgressTextShow){
        
        CGPoint mP = CGPointMake(_mDiyBarX , _mDiyBarPaddingTop -15);
        [self drawString:[NSString stringWithFormat:@"%d%@", _mProgress, _mProgressBarUnitSring] outsidePoint:mP];
    }
}


/**
 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);
    
    
    CGRect rectImage = CGRectMake(_mDiyBarX - _mButtonWidth/2, _mCenterPoint.y - _mButtonWidth/2 , _mButtonWidth, _mButtonWidth);
    
    [_buttonImage 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
    
    
    _bIsInDiyBarProgress = 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(_bIsInDiyBarProgress){//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.x - _mDiyBarPadding ) / _mDiyBarWidth;
    
    //    NSLog(@"point.y:%f   _mDiyBarHeight:%f",point.x, _mDiyBarWidthHalf);
    //    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];
}


/**
 设置边距
 */
-(void)setSeekBarPadding:(int)Padding{
    _DiyBarPadding = Padding;
    [self onDiyBarSizeChange];
}

/**
 设置进度条高
 */
-(void)setProgressBarHeight:(int)mHeight{
    _mDiyBarHeight = mHeight;
    [self onDiyBarSizeChange];
    
}

/**
 设置按钮高度
 */
-(void)setBitmapButtonHeight:(int)mHeight{
    _mButtonWidth = mHeight;
    
}

/**
 设置拖动按钮图片
 */
-(void)setBgBitmapButton:(UIImage*) mImage{
    _buttonImage = mImage;
}

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

@end