54 lines
2.0 KiB
Objective-C
Executable File
54 lines
2.0 KiB
Objective-C
Executable File
//
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// DGActivityIndicatorBallScaleTrippleAnimation.m
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// DGActivityIndicatorExample
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//
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// Created by Nguyen Vinh on 7/20/15.
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// Copyright (c) 2015 Danil Gontovnik. All rights reserved.
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//
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#import "DGActivityIndicatorBallScaleRippleAnimation.h"
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@implementation DGActivityIndicatorBallScaleRippleAnimation
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- (void)setupAnimationInLayer:(CALayer *)layer withSize:(CGSize)size tintColor:(UIColor *)tintColor {
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CGFloat duration = 1.0f;
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CAMediaTimingFunction *timingFunction = [CAMediaTimingFunction functionWithControlPoints:0.21f :0.53f :0.56f :0.8f];
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// Scale animation
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CAKeyframeAnimation *scaleAnimation = [self createKeyframeAnimationWithKeyPath:@"transform.scale"];
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scaleAnimation.duration = duration;
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scaleAnimation.keyTimes = @[@0.0f, @0.7f];
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scaleAnimation.values = @[@0.1f, @1.0f];
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scaleAnimation.timingFunction = timingFunction;
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// Opacity animation
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CAKeyframeAnimation *opacityAnimation = [self createKeyframeAnimationWithKeyPath:@"opacity"];
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opacityAnimation.duration = duration;
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opacityAnimation.keyTimes = @[@0.0f, @0.7f, @1.0f];
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opacityAnimation.values = @[@1.0f, @0.7f, @0.0f];
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opacityAnimation.timingFunctions = @[timingFunction, timingFunction];
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// Animation
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CAAnimationGroup *animation = [self createAnimationGroup];;
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animation.animations = @[scaleAnimation, opacityAnimation];
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animation.duration = duration;
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animation.repeatCount = HUGE_VALF;
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// Draw circle
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CAShapeLayer *circle = [CAShapeLayer layer];
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UIBezierPath *circlePath = [UIBezierPath bezierPathWithRoundedRect:CGRectMake(0, 0, size.width, size.height) cornerRadius:size.width / 2];
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circle.fillColor = nil;
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circle.lineWidth = 2;
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circle.strokeColor = tintColor.CGColor;
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circle.path = circlePath.CGPath;
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[circle addAnimation:animation forKey:@"animation"];
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circle.frame = CGRectMake((layer.bounds.size.width - size.width) / 2, (layer.bounds.size.height - size.height) / 2, size.width, size.height);
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[layer addSublayer:circle];
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}
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@end
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