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XLProgressView.m
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XLProgressView.m
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//
// XLProgressView.m
// XLPhotoBrowserDemo
//
// Created by Liushannoon on 16/7/17.
// Copyright © 2016年 LiuShannoon. All rights reserved.
//
#import "XLProgressView.h"
@implementation XLProgressView
- (id)initWithFrame:(CGRect)frame
{
self = [super initWithFrame:frame];
if (self) {
self.backgroundColor = XLProgressViewBackgroundColor;
self.layer.cornerRadius = 5;
self.clipsToBounds = YES;
self.mode = XLProgressViewProgressMode;
}
return self;
}
- (void)setProgress:(CGFloat)progress
{
_progress = progress;
[self setNeedsDisplay];
if (progress >= 1) {
[self removeFromSuperview];
}
}
- (void)drawRect:(CGRect)rect
{
CGContextRef ctx = UIGraphicsGetCurrentContext();
CGFloat xCenter = rect.size.width * 0.5;
CGFloat yCenter = rect.size.height * 0.5;
[self.backgroundColor setFill];
[XLProgressViewStrokeColor setStroke];
switch (self.mode) {
case XLProgressViewModePieDiagram:
{
CGFloat radius = MIN(rect.size.width * 0.5, rect.size.height * 0.5) - XLProgressViewItemMargin;
CGFloat w = radius * 2 + XLProgressViewItemMargin;
CGFloat h = w;
CGFloat x = (rect.size.width - w) * 0.5;
CGFloat y = (rect.size.height - h) * 0.5;
CGContextAddEllipseInRect(ctx, CGRectMake(x, y, w, h));
CGContextSetLineWidth(ctx, XLProgressViewLoopDiagramLineWidth * 0.5);
CGContextStrokePath(ctx);
[XLProgressViewStrokeColor setFill];
CGContextMoveToPoint(ctx, xCenter, yCenter);
CGContextAddLineToPoint(ctx, xCenter, 0);
CGFloat to = - M_PI * 0.5 + self.progress * M_PI * 2 + 0.001; // 初始值
CGContextAddArc(ctx, xCenter, yCenter, radius, - M_PI * 0.5, to, 0);
CGContextClosePath(ctx);
CGContextFillPath(ctx);
}
break;
default:
{
CGContextSetLineWidth(ctx, XLProgressViewLoopDiagramLineWidth);
CGContextSetLineCap(ctx, kCGLineCapRound);
[XLProgressViewStrokeColor setStroke];
CGFloat to = - M_PI * 0.5 + self.progress * M_PI * 2 + 0.05; // 初始值0.05
CGFloat radius = MIN(rect.size.width, rect.size.height) * 0.5 - XLProgressViewItemMargin;
CGContextAddArc(ctx, xCenter, yCenter, radius, - M_PI * 0.5, to, 0);
CGContextStrokePath(ctx);
}
break;
}
}
@end