SVProgressAnimatedView.m
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//
// SVProgressAnimatedView.m
// SVProgressHUD, https://github.com/SVProgressHUD/SVProgressHUD
//
// Copyright (c) 2016 Tobias Tiemerding. All rights reserved.
//
#import "SVProgressAnimatedView.h"
@interface SVProgressAnimatedView ()
@property (nonatomic, strong) CAShapeLayer *ringAnimatedLayer;
@end
@implementation SVProgressAnimatedView
- (void)willMoveToSuperview:(UIView*)newSuperview {
if (newSuperview) {
[self layoutAnimatedLayer];
} else {
[_ringAnimatedLayer removeFromSuperlayer];
_ringAnimatedLayer = nil;
}
}
- (void)layoutAnimatedLayer {
CALayer *layer = self.ringAnimatedLayer;
[self.layer addSublayer:layer];
CGFloat widthDiff = CGRectGetWidth(self.bounds) - CGRectGetWidth(layer.bounds);
CGFloat heightDiff = CGRectGetHeight(self.bounds) - CGRectGetHeight(layer.bounds);
layer.position = CGPointMake(CGRectGetWidth(self.bounds) - CGRectGetWidth(layer.bounds) / 2 - widthDiff / 2, CGRectGetHeight(self.bounds) - CGRectGetHeight(layer.bounds) / 2 - heightDiff / 2);
}
- (CAShapeLayer*)ringAnimatedLayer {
if(!_ringAnimatedLayer) {
CGPoint arcCenter = CGPointMake(self.radius+self.strokeThickness/2+5, self.radius+self.strokeThickness/2+5);
UIBezierPath* smoothedPath = [UIBezierPath bezierPathWithArcCenter:arcCenter radius:self.radius startAngle:(CGFloat)-M_PI_2 endAngle:(CGFloat) (M_PI + M_PI_2) clockwise:YES];
_ringAnimatedLayer = [CAShapeLayer layer];
_ringAnimatedLayer.contentsScale = [[UIScreen mainScreen] scale];
_ringAnimatedLayer.frame = CGRectMake(0.0f, 0.0f, arcCenter.x*2, arcCenter.y*2);
_ringAnimatedLayer.fillColor = [UIColor clearColor].CGColor;
_ringAnimatedLayer.strokeColor = self.strokeColor.CGColor;
_ringAnimatedLayer.lineWidth = self.strokeThickness;
_ringAnimatedLayer.lineCap = kCALineCapRound;
_ringAnimatedLayer.lineJoin = kCALineJoinBevel;
_ringAnimatedLayer.path = smoothedPath.CGPath;
}
return _ringAnimatedLayer;
}
- (void)setFrame:(CGRect)frame {
if(!CGRectEqualToRect(frame, super.frame)) {
[super setFrame:frame];
if(self.superview) {
[self layoutAnimatedLayer];
}
}
}
- (void)setRadius:(CGFloat)radius {
if(radius != _radius) {
_radius = radius;
[_ringAnimatedLayer removeFromSuperlayer];
_ringAnimatedLayer = nil;
if(self.superview) {
[self layoutAnimatedLayer];
}
}
}
- (void)setStrokeColor:(UIColor*)strokeColor {
_strokeColor = strokeColor;
_ringAnimatedLayer.strokeColor = strokeColor.CGColor;
}
- (void)setStrokeThickness:(CGFloat)strokeThickness {
_strokeThickness = strokeThickness;
_ringAnimatedLayer.lineWidth = _strokeThickness;
}
- (void)setStrokeEnd:(CGFloat)strokeEnd {
_strokeEnd = strokeEnd;
_ringAnimatedLayer.strokeEnd = _strokeEnd;
}
- (CGSize)sizeThatFits:(CGSize)size {
return CGSizeMake((self.radius+self.strokeThickness/2+5)*2, (self.radius+self.strokeThickness/2+5)*2);
}
@end