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Robin.Chao
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13 changes: 13 additions & 0 deletions
13
DGActivityIndicatorView/Animations/DGActivityIndicatorBallSpinFadeLoader.h
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| // | ||
| // DGActivityIndicatorBallSpinFadeLoader.h | ||
| // CheeseDigest | ||
| // | ||
| // Created by Robin.Chao on 9/8/15. | ||
| // Copyright (c) 2015 mRocker. All rights reserved. | ||
| // | ||
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| #import "DGActivityIndicatorAnimationProtocol.h" | ||
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| @interface DGActivityIndicatorBallSpinFadeLoader : NSObject<DGActivityIndicatorAnimationProtocol> | ||
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| @end |
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DGActivityIndicatorView/Animations/DGActivityIndicatorBallSpinFadeLoader.m
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| // | ||
| // DGActivityIndicatorBallSpinFadeLoader.m | ||
| // CheeseDigest | ||
| // | ||
| // Created by Robin.Chao on 9/8/15. | ||
| // Copyright (c) 2015 mRocker. All rights reserved. | ||
| // | ||
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| #import "DGActivityIndicatorBallSpinFadeLoader.h" | ||
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| @implementation DGActivityIndicatorBallSpinFadeLoader | ||
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| #pragma mark - | ||
| #pragma mark DGActivityIndicatorAnimation Protocol | ||
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| - (void)setupAnimationInLayer:(CALayer *)layer withSize:(CGSize)size tintColor:(UIColor *)tintColor { | ||
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| CGFloat circleSpacing = -2; | ||
| CGFloat circleSize = (size.width - 4 * circleSpacing) / 5; | ||
| CGFloat x = (layer.bounds.size.width - size.width) / 2; | ||
| CGFloat y = (layer.bounds.size.height - size.height) / 2; | ||
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| CFTimeInterval duration = 1; | ||
| NSTimeInterval beginTime = CACurrentMediaTime(); | ||
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| NSArray *beginTimes = @[@0, @0.12, @0.24, @0.36, @0.48, @0.6, @0.72, @0.84]; | ||
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| CAKeyframeAnimation *scaleAnimation = [CAKeyframeAnimation animationWithKeyPath:@"transform.scale"]; | ||
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| scaleAnimation.keyTimes = @[@0, @0.5, @1]; | ||
| scaleAnimation.values = @[@1, @0.4, @1]; | ||
| scaleAnimation.duration = duration; | ||
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| CAKeyframeAnimation *opacityAnimaton = [CAKeyframeAnimation animationWithKeyPath:@"opacity"]; | ||
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| opacityAnimaton.keyTimes = @[@0, @0.5, @1]; | ||
| opacityAnimaton.values = @[@1, @0.3, @1]; | ||
| opacityAnimaton.duration = duration; | ||
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| CAAnimationGroup *animationGroup = [CAAnimationGroup animation]; | ||
| animationGroup.animations = @[scaleAnimation, opacityAnimaton]; | ||
| animationGroup.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionLinear]; | ||
| animationGroup.duration = duration; | ||
| animationGroup.repeatCount = HUGE; | ||
| animationGroup.removedOnCompletion = NO; | ||
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| for (int i = 0; i < 8; i++) { | ||
| CALayer *circle = [self circleLayer:(M_PI_4 * i) size:circleSize origin:CGPointMake(x, y) containerSize:size color:tintColor]; | ||
| animationGroup.beginTime = beginTime + [beginTimes[i] doubleValue]; | ||
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| [layer addSublayer:circle]; | ||
| [circle addAnimation:animationGroup forKey:@"animation"]; | ||
| } | ||
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| } | ||
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| - (CALayer *)circleLayer:(CGFloat)angle size:(CGFloat)size origin:(CGPoint)origin containerSize:(CGSize)containerSize color:(UIColor *)color{ | ||
| CGFloat radius = containerSize.width/2; | ||
| CALayer *circle = [self createLayerWith:CGSizeMake(size, size) color:color]; | ||
| CGRect frame = CGRectMake((origin.x + radius * (cos(angle) + 1) - size / 2), origin.y + radius * (sin(angle) + 1) - size / 2, size, size); | ||
| circle.frame = frame; | ||
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| return circle; | ||
| } | ||
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| - (CALayer *)createLayerWith:(CGSize)size color:(UIColor *)color{ | ||
| CAShapeLayer *layer = [CAShapeLayer layer]; | ||
| UIBezierPath *path = [UIBezierPath bezierPath]; | ||
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| [path addArcWithCenter:CGPointMake(size.width / 2,size.height / 2) radius:(size.width / 2) startAngle:0 endAngle:2 * M_PI clockwise:NO]; | ||
| layer.fillColor = color.CGColor; | ||
| layer.backgroundColor = nil; | ||
| layer.path = path.CGPath; | ||
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| return layer; | ||
| } | ||
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| @end |
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