PNBar.m
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//
// PNBar.m
// PNChartDemo
//
// Created by kevin on 11/7/13.
// Copyright (c) 2013年 kevinzhow. All rights reserved.
//
#import "PNBar.h"
#import "PNColor.h"
@implementation PNBar
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
// Initialization code
_chartLine = [CAShapeLayer layer];
_chartLine.lineCap = kCALineCapSquare;
_chartLine.fillColor = [[UIColor whiteColor] CGColor];
_chartLine.lineWidth = self.frame.size.width;
_chartLine.strokeEnd = 0.0;
self.clipsToBounds = YES;
[self.layer addSublayer:_chartLine];
self.layer.cornerRadius = 2.0;
}
return self;
}
-(void)setGrade:(float)grade
{
_grade = grade;
UIBezierPath *progressline = [UIBezierPath bezierPath];
[progressline moveToPoint:CGPointMake(self.frame.size.width/2.0, self.frame.size.height)];
[progressline addLineToPoint:CGPointMake(self.frame.size.width/2.0, (1 - grade) * self.frame.size.height)];
[progressline setLineWidth:1.0];
[progressline setLineCapStyle:kCGLineCapSquare];
_chartLine.path = progressline.CGPath;
if (_barColor) {
_chartLine.strokeColor = [_barColor CGColor];
}else{
_chartLine.strokeColor = [PNGreen CGColor];
}
CABasicAnimation *pathAnimation = [CABasicAnimation animationWithKeyPath:@"strokeEnd"];
pathAnimation.duration = 1.0;
pathAnimation.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
pathAnimation.fromValue = [NSNumber numberWithFloat:0.0f];
pathAnimation.toValue = [NSNumber numberWithFloat:1.0f];
pathAnimation.autoreverses = NO;
[_chartLine addAnimation:pathAnimation forKey:@"strokeEndAnimation"];
_chartLine.strokeEnd = 1.0;
}
// Only override drawRect: if you perform custom drawing.
// An empty implementation adversely affects performance during animation.
- (void)drawRect:(CGRect)rect
{
//Draw BG
CGContextRef context = UIGraphicsGetCurrentContext();
CGContextSetFillColorWithColor(context, [UIColor colorWithRed:238.0/255.0 green:238.0/255.0 blue:238.0/255.0 alpha:1.0].CGColor);
CGContextFillRect(context, rect);
}
@end