50 lines
2.0 KiB
Objective-C
Executable File
50 lines
2.0 KiB
Objective-C
Executable File
//
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// DGActivityIndicatorTriplePulseAnimation.m
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// DGActivityIndicatorExample
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//
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// Created by Danil Gontovnik on 5/23/15.
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// Copyright (c) 2015 Danil Gontovnik. All rights reserved.
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//
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#import "DGActivityIndicatorTriplePulseAnimation.h"
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@implementation DGActivityIndicatorTriplePulseAnimation
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#pragma mark -
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#pragma mark DGActivityIndicatorAnimation Protocol
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- (void)setupAnimationInLayer:(CALayer *)layer withSize:(CGSize)size tintColor:(UIColor *)tintColor {
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NSTimeInterval beginTime = CACurrentMediaTime();
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CGFloat oX = (layer.bounds.size.width - size.width) / 2.0f;
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CGFloat oY = (layer.bounds.size.height - size.height) / 2.0f;
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for (int i = 0; i < 4; i++) {
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CALayer *circle = [CALayer layer];
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circle.frame = CGRectMake(oX, oY, size.width, size.height);
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circle.backgroundColor = tintColor.CGColor;
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circle.anchorPoint = CGPointMake(0.5f, 0.5f);
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circle.opacity = 0.8f;
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circle.cornerRadius = circle.bounds.size.height / 2.0f;
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circle.transform = CATransform3DMakeScale(0.0f, 0.0f, 0.0f);
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CABasicAnimation *transformAnimation = [self createBasicAnimationWithKeyPath:@"transform"];
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transformAnimation.fromValue = [NSValue valueWithCATransform3D:CATransform3DMakeScale(0.0f, 0.0f, 0.0f)];
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transformAnimation.toValue = [NSValue valueWithCATransform3D:CATransform3DMakeScale(1.0f, 1.0f, 0.0f)];
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CABasicAnimation *opacityAnimation = [self createBasicAnimationWithKeyPath:@"opacity"];
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opacityAnimation.fromValue = @(0.8f);
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opacityAnimation.toValue = @(0.0f);
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CAAnimationGroup *animationGroup = [self createAnimationGroup];;
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animationGroup.beginTime = beginTime + i * 0.2f;
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animationGroup.repeatCount = HUGE_VALF;
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animationGroup.duration = 1.2f;
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animationGroup.animations = @[transformAnimation, opacityAnimation];
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[layer addSublayer:circle];
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[circle addAnimation:animationGroup forKey:@"animation"];
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}
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}
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@end
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