138 lines
5.1 KiB
Objective-C
138 lines
5.1 KiB
Objective-C
//
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// SVIndefiniteAnimatedView.m
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// SVProgressHUD
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//
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// Created by Guillaume Campagna on 2014-12-05.
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//
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//
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#import "SVIndefiniteAnimatedView.h"
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#pragma mark SVIndefiniteAnimatedView
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@interface SVIndefiniteAnimatedView ()
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@property (nonatomic, strong) CAShapeLayer *indefiniteAnimatedLayer;
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@end
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@implementation SVIndefiniteAnimatedView
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- (void)willMoveToSuperview:(UIView *)newSuperview {
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if (newSuperview) {
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[self layoutAnimatedLayer];
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} else {
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[_indefiniteAnimatedLayer removeFromSuperlayer];
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_indefiniteAnimatedLayer = nil;
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}
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}
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- (void)layoutAnimatedLayer {
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CALayer *layer = self.indefiniteAnimatedLayer;
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[self.layer addSublayer:layer];
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layer.position = CGPointMake(CGRectGetWidth(self.bounds) - CGRectGetWidth(layer.bounds) / 2, CGRectGetHeight(self.bounds) - CGRectGetHeight(layer.bounds) / 2);
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}
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- (CAShapeLayer*)indefiniteAnimatedLayer {
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if(!_indefiniteAnimatedLayer) {
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CGPoint arcCenter = CGPointMake(self.radius+self.strokeThickness/2+5, self.radius+self.strokeThickness/2+5);
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CGRect rect = CGRectMake(0.0f, 0.0f, arcCenter.x*2, arcCenter.y*2);
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UIBezierPath* smoothedPath = [UIBezierPath bezierPathWithArcCenter:arcCenter
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radius:self.radius
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startAngle:M_PI*3/2
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endAngle:M_PI/2+M_PI*5
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clockwise:YES];
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_indefiniteAnimatedLayer = [CAShapeLayer layer];
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_indefiniteAnimatedLayer.contentsScale = [[UIScreen mainScreen] scale];
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_indefiniteAnimatedLayer.frame = rect;
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_indefiniteAnimatedLayer.fillColor = [UIColor clearColor].CGColor;
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_indefiniteAnimatedLayer.strokeColor = self.strokeColor.CGColor;
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_indefiniteAnimatedLayer.lineWidth = self.strokeThickness;
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_indefiniteAnimatedLayer.lineCap = kCALineCapRound;
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_indefiniteAnimatedLayer.lineJoin = kCALineJoinBevel;
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_indefiniteAnimatedLayer.path = smoothedPath.CGPath;
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CALayer *maskLayer = [CALayer layer];
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NSBundle *bundle = [NSBundle bundleForClass:self.class];
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NSURL *url = [bundle URLForResource:@"SVProgressHUD" withExtension:@"bundle"];
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NSBundle *imageBundle = [NSBundle bundleWithURL:url];
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NSString *path = [imageBundle pathForResource:@"angle-mask" ofType:@"png"];
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maskLayer.contents = (id)[[UIImage imageWithContentsOfFile:path] CGImage];;
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maskLayer.frame = _indefiniteAnimatedLayer.bounds;
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_indefiniteAnimatedLayer.mask = maskLayer;
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NSTimeInterval animationDuration = 1;
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CAMediaTimingFunction *linearCurve = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear];
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CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"transform.rotation"];
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animation.fromValue = 0;
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animation.toValue = [NSNumber numberWithFloat:M_PI*2];
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animation.duration = animationDuration;
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animation.timingFunction = linearCurve;
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animation.removedOnCompletion = NO;
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animation.repeatCount = INFINITY;
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animation.fillMode = kCAFillModeForwards;
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animation.autoreverses = NO;
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[_indefiniteAnimatedLayer.mask addAnimation:animation forKey:@"rotate"];
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CAAnimationGroup *animationGroup = [CAAnimationGroup animation];
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animationGroup.duration = animationDuration;
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animationGroup.repeatCount = INFINITY;
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animationGroup.removedOnCompletion = NO;
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animationGroup.timingFunction = linearCurve;
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CABasicAnimation *strokeStartAnimation = [CABasicAnimation animationWithKeyPath:@"strokeStart"];
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strokeStartAnimation.fromValue = @0.015;
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strokeStartAnimation.toValue = @0.515;
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CABasicAnimation *strokeEndAnimation = [CABasicAnimation animationWithKeyPath:@"strokeEnd"];
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strokeEndAnimation.fromValue = @0.485;
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strokeEndAnimation.toValue = @0.985;
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animationGroup.animations = @[strokeStartAnimation, strokeEndAnimation];
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[_indefiniteAnimatedLayer addAnimation:animationGroup forKey:@"progress"];
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}
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return _indefiniteAnimatedLayer;
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}
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- (void)setFrame:(CGRect)frame {
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[super setFrame:frame];
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if (self.superview) {
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[self layoutAnimatedLayer];
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}
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}
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- (void)setRadius:(CGFloat)radius {
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_radius = radius;
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[_indefiniteAnimatedLayer removeFromSuperlayer];
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_indefiniteAnimatedLayer = nil;
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if (self.superview) {
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[self layoutAnimatedLayer];
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}
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}
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- (void)setStrokeColor:(UIColor *)strokeColor {
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_strokeColor = strokeColor;
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_indefiniteAnimatedLayer.strokeColor = strokeColor.CGColor;
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}
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- (void)setStrokeThickness:(CGFloat)strokeThickness {
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_strokeThickness = strokeThickness;
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_indefiniteAnimatedLayer.lineWidth = _strokeThickness;
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}
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- (CGSize)sizeThatFits:(CGSize)size {
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return CGSizeMake((self.radius+self.strokeThickness/2+5)*2, (self.radius+self.strokeThickness/2+5)*2);
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}
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@end
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