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//
// RTSpinKitView.m
// SpinKit
//
// Created by Ramon Torres on 1/1/14.
// Copyright (c) 2014 Ramon Torres. All rights reserved.
//
#import "RTSpinKitView.h"
#include <tgmath.h>
static CGFloat kRTSpinKitDegToRad = 0.0174532925;
static CATransform3D RTSpinKit3DRotationWithPerspective(CGFloat perspective,
CGFloat angle,
CGFloat x,
CGFloat y,
CGFloat z)
{
CATransform3D transform = CATransform3DIdentity;
transform.m34 = perspective;
return CATransform3DRotate(transform, angle, x, y, z);
}
@interface RTSpinKitView ()
@property (nonatomic, assign) RTSpinKitViewStyle style;
@property (nonatomic, assign) BOOL stopped;
@end
@implementation RTSpinKitView
-(instancetype)initWithStyle:(RTSpinKitViewStyle)style {
return [self initWithStyle:style color:[UIColor grayColor]];
}
-(instancetype)initWithStyle:(RTSpinKitViewStyle)style color:(UIColor*)color {
self = [super init];
if (self) {
_style = style;
_color = color;
[self sizeToFit];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(applicationWillEnterForeground)
name:UIApplicationWillEnterForegroundNotification
object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:@selector(applicationDidEnterBackground)
name:UIApplicationDidEnterBackgroundNotification
object:nil];
if (style == RTSpinKitViewStylePlane) {
CALayer *plane = [CALayer layer];
plane.frame = CGRectInset(self.bounds, 2.0, 2.0);
plane.backgroundColor = color.CGColor;
plane.anchorPoint = CGPointMake(0.5, 0.5);
plane.anchorPointZ = 0.5;
[self.layer addSublayer:plane];
CAKeyframeAnimation *anim = [CAKeyframeAnimation animationWithKeyPath:@"transform"];
anim.removedOnCompletion = NO;
anim.repeatCount = HUGE_VALF;
anim.duration = 1.2;
anim.keyTimes = @[@(0.0), @(0.5), @(1.0)];
anim.timingFunctions = @[
[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut],
[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut],
[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]
];
anim.values = @[
[NSValue valueWithCATransform3D:RTSpinKit3DRotationWithPerspective(1.0/120.0, 0, 0, 0, 0)],
[NSValue valueWithCATransform3D:RTSpinKit3DRotationWithPerspective(1.0/120.0, M_PI, 0.0, 1.0,0.0)],
[NSValue valueWithCATransform3D:RTSpinKit3DRotationWithPerspective(1.0/120.0, M_PI, 0.0, 0.0,1.0)]
];
[plane addAnimation:anim forKey:@"spinkit-anim"];
}
else if (style == RTSpinKitViewStyleBounce) {
NSTimeInterval beginTime = CACurrentMediaTime();
for (NSInteger i=0; i < 2; i+=1) {
CALayer *circle = [CALayer layer];
circle.frame = CGRectInset(self.bounds, 2.0, 2.0);
circle.backgroundColor = color.CGColor;
circle.anchorPoint = CGPointMake(0.5, 0.5);
circle.opacity = 0.6;
circle.cornerRadius = CGRectGetHeight(circle.bounds) * 0.5;
circle.transform = CATransform3DMakeScale(0.0, 0.0, 0.0);
CAKeyframeAnimation *anim = [CAKeyframeAnimation animationWithKeyPath:@"transform"];
anim.removedOnCompletion = NO;
anim.repeatCount = HUGE_VALF;
anim.duration = 2.0;
anim.beginTime = beginTime - (1.0 * i);
anim.keyTimes = @[@(0.0), @(0.5), @(1.0)];
anim.timingFunctions = @[
[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut],
[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut],
[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]
];
anim.values = @[
[NSValue valueWithCATransform3D:CATransform3DMakeScale(0.0, 0.0, 0.0)],
[NSValue valueWithCATransform3D:CATransform3DMakeScale(1.0, 1.0, 0.0)],
[NSValue valueWithCATransform3D:CATransform3DMakeScale(0.0, 0.0, 0.0)]
];
[self.layer addSublayer:circle];
[circle addAnimation:anim forKey:@"spinkit-anim"];
}
}
else if (style == RTSpinKitViewStyleWave) {
NSTimeInterval beginTime = CACurrentMediaTime() + 1.2;
CGFloat barWidth = CGRectGetWidth(self.bounds) / 5.0;
for (NSInteger i=0; i < 5; i+=1) {
CALayer *layer = [CALayer layer];
layer.backgroundColor = color.CGColor;
layer.frame = CGRectMake(barWidth * i, 0.0, barWidth - 3.0, CGRectGetHeight(self.bounds));
layer.transform = CATransform3DMakeScale(1.0, 0.3, 0.0);
CAKeyframeAnimation *anim = [CAKeyframeAnimation animationWithKeyPath:@"transform"];
anim.removedOnCompletion = NO;
anim.beginTime = beginTime - (1.2 - (0.1 * i));
anim.duration = 1.2;
anim.repeatCount = HUGE_VALF;
anim.keyTimes = @[@(0.0), @(0.2), @(0.4), @(1.0)];
anim.timingFunctions = @[
[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut],
[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut],
[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut],
[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]
];
anim.values = @[
[NSValue valueWithCATransform3D:CATransform3DMakeScale(1.0, 0.4, 0.0)],
[NSValue valueWithCATransform3D:CATransform3DMakeScale(1.0, 1.0, 0.0)],
[NSValue valueWithCATransform3D:CATransform3DMakeScale(1.0, 0.4, 0.0)],
[NSValue valueWithCATransform3D:CATransform3DMakeScale(1.0, 0.4, 0.0)]
];
[self.layer addSublayer:layer];
[layer addAnimation:anim forKey:@"spinkit-anim"];
}
}
else if (style == RTSpinKitViewStyleWanderingCubes) {
NSTimeInterval beginTime = CACurrentMediaTime();
CGFloat cubeSize = floor(CGRectGetWidth(self.bounds) / 3.0);
CGFloat widthMinusCubeSize = CGRectGetWidth(self.bounds) - cubeSize;
for (NSInteger i=0; i<2; i+=1) {
CALayer *cube = [CALayer layer];
cube.backgroundColor = color.CGColor;
cube.frame = CGRectMake(0.0, 0.0, cubeSize, cubeSize);
cube.anchorPoint = CGPointMake(0.5, 0.5);
CAKeyframeAnimation *anim = [CAKeyframeAnimation animationWithKeyPath:@"transform"];
anim.removedOnCompletion = NO;
anim.beginTime = beginTime - (i * 0.9);
anim.duration = 1.8;
anim.repeatCount = HUGE_VALF;
anim.keyTimes = @[@(0.0), @(0.25), @(0.50), @(0.75), @(1.0)];
anim.timingFunctions = @[
[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut],
[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut],
[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut],
[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut],
[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]
];
CATransform3D t0 = CATransform3DIdentity;
CATransform3D t1 = CATransform3DMakeTranslation(widthMinusCubeSize, 0.0, 0.0);
t1 = CATransform3DRotate(t1, -90.0 * kRTSpinKitDegToRad, 0.0, 0.0, 1.0);
t1 = CATransform3DScale(t1, 0.5, 0.5, 1.0);
CATransform3D t2 = CATransform3DMakeTranslation(widthMinusCubeSize, widthMinusCubeSize, 0.0);
t2 = CATransform3DRotate(t2, -180.0 * kRTSpinKitDegToRad, 0.0, 0.0, 1.0);
t2 = CATransform3DScale(t2, 1.0, 1.0, 1.0);
CATransform3D t3 = CATransform3DMakeTranslation(0.0, widthMinusCubeSize, 0.0);
t3 = CATransform3DRotate(t3, -270.0 * kRTSpinKitDegToRad, 0.0, 0.0, 1.0);
t3 = CATransform3DScale(t3, 0.5, 0.5, 1.0);
CATransform3D t4 = CATransform3DMakeTranslation(0.0, 0.0, 0.0);
t4 = CATransform3DRotate(t4, -360.0 * kRTSpinKitDegToRad, 0.0, 0.0, 1.0);
t4 = CATransform3DScale(t4, 1.0, 1.0, 1.0);
anim.values = @[[NSValue valueWithCATransform3D:t0],
[NSValue valueWithCATransform3D:t1],
[NSValue valueWithCATransform3D:t2],
[NSValue valueWithCATransform3D:t3],
[NSValue valueWithCATransform3D:t4]];
[self.layer addSublayer:cube];
[cube addAnimation:anim forKey:@"spinkit-anim"];
}
}
else if (style == RTSpinKitViewStylePulse) {
NSTimeInterval beginTime = CACurrentMediaTime();
CALayer *circle = [CALayer layer];
circle.frame = CGRectInset(self.bounds, 2.0, 2.0);
circle.backgroundColor = color.CGColor;
circle.anchorPoint = CGPointMake(0.5, 0.5);
circle.opacity = 1.0;
circle.cornerRadius = CGRectGetHeight(circle.bounds) * 0.5;
circle.transform = CATransform3DMakeScale(0.0, 0.0, 0.0);
CAKeyframeAnimation *scaleAnim = [CAKeyframeAnimation animationWithKeyPath:@"transform"];
scaleAnim.values = @[
[NSValue valueWithCATransform3D:CATransform3DMakeScale(0.0, 0.0, 0.0)],
[NSValue valueWithCATransform3D:CATransform3DMakeScale(1.0, 1.0, 0.0)]
];
CAKeyframeAnimation *opacityAnim = [CAKeyframeAnimation animationWithKeyPath:@"opacity"];
opacityAnim.values = @[@(1.0), @(0.0)];
CAAnimationGroup *animGroup = [CAAnimationGroup animation];
animGroup.removedOnCompletion = NO;
animGroup.beginTime = beginTime;
animGroup.repeatCount = HUGE_VALF;
animGroup.duration = 1.0;
animGroup.animations = @[scaleAnim, opacityAnim];
animGroup.timingFunction = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut];
[self.layer addSublayer:circle];
[circle addAnimation:animGroup forKey:@"spinkit-anim"];
}
}
return self;
}
-(void)setIsCancelAble:(BOOL)isCancelAble {
_isCancelAble = isCancelAble;
if (isCancelAble) {
return;
}
CALayer *layer = [self.layer.sublayers firstObject];
[layer removeFromSuperlayer];
CGRect f = self.frame;
f.size.width = UI_SCREEN_WIDTH;
f.size.height = UI_SCREEN_HEITHT;
self.frame = f;
self.backgroundColor = [UIColor clearColor];
CGFloat x = UI_SCREEN_WIDTH / 2 - 37.0 / 2;
CGFloat y = UI_SCREEN_HEITHT / 2 - 37.0 / 2;
UIView *loadingView = [[UIView alloc] initWithFrame:CGRectMake(x, y, 37.0, 37.0)];
[loadingView.layer addSublayer:layer];
[self addSubview:loadingView];
}
-(void)applicationWillEnterForeground {
if (self.stopped) {
[self pauseLayers];
} else {
[self resumeLayers];
}
}
-(void)applicationDidEnterBackground {
[self pauseLayers];
}
-(void)startAnimating {
self.hidden = NO;
self.stopped = NO;
[self resumeLayers];
}
-(void)stopAnimating {
if (self.hidesWhenStopped) {
self.hidden = YES;
}
self.stopped = YES;
[self pauseLayers];
}
-(void)pauseLayers {
CALayer *layer = self.layer;
if (!self.isCancelAble) {
UIView *v = [self.subviews firstObject];
layer = v.layer;
}
CFTimeInterval pausedTime = [layer convertTime:CACurrentMediaTime() fromLayer:nil];
layer.speed = 0.0;
layer.timeOffset = pausedTime;
}
-(void)resumeLayers {
CALayer *layer = self.layer;
if (!self.isCancelAble) {
UIView *v = [self.subviews firstObject];
layer = v.layer;
}
CFTimeInterval pausedTime = [layer timeOffset];
layer.speed = 1.0;
layer.timeOffset = 0.0;
layer.beginTime = 0.0;
CFTimeInterval timeSincePause = [layer convertTime:CACurrentMediaTime() fromLayer:nil] - pausedTime;
layer.beginTime = timeSincePause;
}
-(CGSize)sizeThatFits:(CGSize)size {
return CGSizeMake(37.0, 37.0);
}
-(void)setColor:(UIColor *)color {
_color = color;
for (CALayer *l in self.layer.sublayers) {
l.backgroundColor = color.CGColor;
}
}
-(void)dealloc {
[[NSNotificationCenter defaultCenter] removeObserver:self];
}
@end