82 lines
1.8 KiB
Mathematica
82 lines
1.8 KiB
Mathematica
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#import <UIKit/UIKit.h>
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#import "REATransitionAnimation.h"
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#define DEFAULT_DURATION 0.25
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#if TARGET_IPHONE_SIMULATOR
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// Based on https://stackoverflow.com/a/13307674
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float UIAnimationDragCoefficient(void);
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#endif
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CGFloat SimAnimationDragCoefficient()
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{
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#if TARGET_IPHONE_SIMULATOR
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if (NSClassFromString(@"XCTest") != nil) {
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// UIAnimationDragCoefficient is 10.0 in tests for some reason, but
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// we need it to be 1.0.
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return 1.0;
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} else {
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return (CGFloat)UIAnimationDragCoefficient();
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}
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#else
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return 1.0;
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#endif
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}
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@implementation REATransitionAnimation {
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NSTimeInterval _delay;
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}
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+ (REATransitionAnimation *)transitionWithAnimation:(CAAnimation *)animation
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layer:(CALayer *)layer
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andKeyPath:(NSString*)keyPath;
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{
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REATransitionAnimation *anim = [REATransitionAnimation new];
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anim.animation = animation;
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anim.layer = layer;
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anim.keyPath = keyPath;
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return anim;
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}
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- (void)play
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{
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/*
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CACurrentMediaTime introduces some kind of delay even if _delay is set to 0
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it calls mach_absolute_time() which is based on the last time the device booted
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which might cause the delay
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*/
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if (_delay > 0){
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_animation.beginTime = CACurrentMediaTime() + _delay * SimAnimationDragCoefficient();
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}
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_animation.duration = self.duration * SimAnimationDragCoefficient();
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[_layer addAnimation:_animation forKey:_keyPath];
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}
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- (void)delayBy:(CFTimeInterval)delay
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{
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if (delay <= 0) {
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return;
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}
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_delay += delay;
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}
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- (CFTimeInterval)duration
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{
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if (_animation.duration == 0) {
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return DEFAULT_DURATION;
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}
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return _animation.duration;
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}
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- (CFTimeInterval)finishTime
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{
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if (_animation.beginTime == 0) {
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return CACurrentMediaTime() + self.duration + _delay;
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}
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return _animation.beginTime + self.duration + _delay;
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}
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@end
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