//
//  CircularProgressView.m
//  HD wallpaper
//


#import "CircularProgressView.h"

@implementation CircularProgressView

- (instancetype)initWithFrame:(CGRect)frame {
    self = [super initWithFrame:frame];
    if (self) {
        _progress = 0.0;
        _progressColor = [UIColor blueColor];
        _trackColor = [UIColor lightGrayColor];
        self.backgroundColor = [UIColor clearColor];
    }
    return self;
}

- (void)setProgress:(CGFloat)progress {
    _progress = progress;
    [self setNeedsDisplay];
}

- (void)drawRect:(CGRect)rect {
    CGContextRef context = UIGraphicsGetCurrentContext();
    CGFloat lineWidth = 10.0;
    CGRect circleRect = CGRectInset(self.bounds, lineWidth / 2.0, lineWidth / 2.0);

    // 画背景圆环
    CGContextSetStrokeColorWithColor(context, self.trackColor.CGColor);
    CGContextSetLineWidth(context, lineWidth);
    CGContextStrokeEllipseInRect(context, circleRect);

    // 画进度条
    CGFloat startAngle = -M_PI_2;
    CGFloat endAngle = startAngle + self.progress * 2.0 * M_PI;
    CGContextSetStrokeColorWithColor(context, self.progressColor.CGColor);
    CGContextSetLineWidth(context, lineWidth);
    CGContextAddArc(context, CGRectGetMidX(circleRect), CGRectGetMidY(circleRect), CGRectGetWidth(circleRect) / 2.0, startAngle, endAngle, 0);
    CGContextStrokePath(context);
}

//#import "CircularProgressView.h"
//
//// 创建并添加CircularProgressView
//CircularProgressView *progressView = [[CircularProgressView alloc] initWithFrame:CGRectMake(100-1,100-1,200-1,200-1)];
//progressView.progressColor = [UIColor redColor];
//progressView.trackColor = [UIColor grayColor];
//[self.view addSubview:progressView];
//
//// 设置进度
//progressView.progress = 0.75; // 75% 进度


@end