Merge pull request #26 from dealforest/topic/CAReplicatorLayer

Modify using CAReplicatorLayer
shu223 · Oct 14, 2015 · 6a1098f · 6a1098f
2 parents d07b140 + 5f58d7b
commit 6a1098f
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Showing 8 changed files with 167 additions and 255 deletions.
diff --git a/PulsingHalo/MultiplePulsingHaloLayer.h b/PulsingHalo/MultiplePulsingHaloLayer.h
diff --git a/PulsingHalo/MultiplePulsingHaloLayer.m b/PulsingHalo/MultiplePulsingHaloLayer.m
diff --git a/PulsingHalo/PulsingHaloLayer.h b/PulsingHalo/PulsingHaloLayer.h
@@ -12,7 +12,7 @@
 #import <QuartzCore/QuartzCore.h>
 
 
-@interface PulsingHaloLayer : CALayer
+@interface PulsingHaloLayer : CAReplicatorLayer
 
 /**
  *	The default value of this property is @c 60pt.
@@ -60,6 +60,20 @@
  */
 @property (nonatomic, assign) BOOL useTimingFunction;
 
-- (id)initWithRepeatCount:(float)repeatCount;
+/**
+ *	The default value of this property is @c 1.
+ */
+@property (nonatomic, assign) NSInteger haloLayerNumber;
+
+/**
+ *	The animation delay in seconds.
+ *
+ *	The default value of this property is @c 1.
+ */
+@property (nonatomic, assign) NSTimeInterval startInterval;
+
+- (instancetype)initWithRepeatCount:(float)repeatCount;
+
+- (instancetype)initWithLayerNumber:(NSInteger)layerNumber;
 
 @end
diff --git a/PulsingHalo/PulsingHaloLayer.m b/PulsingHalo/PulsingHaloLayer.m
@@ -12,40 +12,36 @@
 
 
 @interface PulsingHaloLayer ()
+@property (nonatomic, strong) CALayer *effect;
 @property (nonatomic, strong) CAAnimationGroup *animationGroup;
 @end
 
 
 @implementation PulsingHaloLayer
 @dynamic repeatCount;
 
-- (id)initWithRepeatCount:(float) repeatCount
+- (instancetype)initWithRepeatCount:(float) repeatCount
 {
     self = [super init];
     if (self) {
-        self.contentsScale = [UIScreen mainScreen].scale;
-        self.opacity = 0;
-
-        // default
-        self.radius = 60;
-        self.fromValueForRadius = 0.0;
-        self.fromValueForAlpha = 0.45;
-        self.keyTimeForHalfOpacity = 0.2;
-        self.animationDuration = 3;
-        self.pulseInterval = 0;
         self.repeatCount = repeatCount;
-        self.backgroundColor = [[UIColor colorWithRed:0.000 green:0.478 blue:1.000 alpha:1] CGColor];
-        self.useTimingFunction = YES;
+
+        self.effect = [CALayer new];
+        self.effect.contentsScale = [UIScreen mainScreen].scale;
+        self.effect.opacity = 0;
+        [self addSublayer:self.effect];
+
+        [self _setupProperties];
 
         dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^(void) {
 
-            [self setupAnimationGroup];
+            [self _setupAnimationGroup];
 
             if(self.pulseInterval != INFINITY) {
 
                 dispatch_async(dispatch_get_main_queue(), ^(void) {
 
-                    [self addAnimation:self.animationGroup forKey:@"pulse"];
+                    [self.effect addAnimation:self.animationGroup forKey:@"pulse"];
                 });
             }
         });
@@ -54,32 +50,91 @@ - (id)initWithRepeatCount:(float) repeatCount
 
 }
 
-- (id)init {
+- (instancetype)initWithLayerNumber:(NSInteger)layerNumber {
+    self = [self initWithRepeatCount:INFINITY];
+    if (self) {
+        self.haloLayerNumber = layerNumber;
+    }
+    return self;
+}
+
+- (instancetype)init {
     return [self initWithRepeatCount:INFINITY];
 }
 
+// =============================================================================
+#pragma mark - Accessor
+
+- (void)setFrame:(CGRect)frame {
+
+    [super setFrame:frame];
+    self.effect.frame = frame;
+}
+
+- (void)setBackgroundColor:(CGColorRef)backgroundColor {
+
+    [super setBackgroundColor:backgroundColor];
+    self.effect.backgroundColor = backgroundColor;
+}
+
 - (void)setRadius:(CGFloat)radius {
 
     _radius = radius;
 
-    CGPoint tempPos = self.position;
-
     CGFloat diameter = self.radius * 2;
 
-    self.bounds = CGRectMake(0, 0, diameter, diameter);
-    self.cornerRadius = self.radius;
-    self.position = tempPos;
+    self.effect.bounds = CGRectMake(0, 0, diameter, diameter);
+    self.effect.cornerRadius = self.radius;
+}
+
+- (void)setPulseInterval:(NSTimeInterval)pulseInterval {
+
+    _pulseInterval = pulseInterval;
+
+    if (_pulseInterval == INFINITY) {
+        [self.effect removeAnimationForKey:@"pulse"];
+    }
+}
+
+- (void)setHaloLayerNumber:(NSInteger)haloLayerNumber {
+
+    _haloLayerNumber = haloLayerNumber;
+    self.instanceCount = haloLayerNumber;
+    self.instanceDelay = (self.animationDuration + self.pulseInterval) / haloLayerNumber;
+}
+
+- (void)setStartInterval:(NSTimeInterval)startInterval {
+
+    _startInterval = startInterval;
+    self.instanceDelay = startInterval;
+}
+
+// =============================================================================
+#pragma mark - private
+
+- (void)_setupProperties {
+    _fromValueForRadius = 0.0;
+    _fromValueForAlpha = 0.45;
+    _keyTimeForHalfOpacity = 0.2;
+    _animationDuration = 3;
+    _pulseInterval = 0;
+    _useTimingFunction = YES;
+
+    self.radius = 60;
+    self.haloLayerNumber = 1;
+    self.startInterval = 1;
+    self.backgroundColor = [[UIColor colorWithRed:0.000 green:0.478 blue:1.000 alpha:1] CGColor];
 }
 
-- (void)setupAnimationGroup {
+- (void)_setupAnimationGroup {
 
-    self.animationGroup = [CAAnimationGroup animation];
-    self.animationGroup.duration = self.animationDuration + self.pulseInterval;
-    self.animationGroup.repeatCount = self.repeatCount;
-    self.animationGroup.removedOnCompletion = NO;
+    CAAnimationGroup *animationGroup = [CAAnimationGroup animation];
+    animationGroup.duration = self.animationDuration + self.pulseInterval;
+    animationGroup.repeatCount = self.repeatCount;
+    animationGroup.removedOnCompletion = NO;
     if (self.useTimingFunction) {
         CAMediaTimingFunction *defaultCurve = [CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionDefault];
-        self.animationGroup.timingFunction = defaultCurve;
+        animationGroup.timingFunction = defaultCurve;
     }
 
     CABasicAnimation *scaleAnimation = [CABasicAnimation animationWithKeyPath:@"transform.scale.xy"];
@@ -95,20 +150,9 @@ - (void)setupAnimationGroup {
 
     NSArray *animations = @[scaleAnimation, opacityAnimation];
 
-    self.animationGroup.animations = animations;
-    self.animationGroup.delegate = self;
-}
-
-
-// =============================================================================
-#pragma mark - CAAnimation Delegate
-
-- (void)animationDidStop:(CAAnimation *)anim finished:(BOOL)flag {
-
-	if (flag) {
-        [self removeAllAnimations];
-        [self removeFromSuperlayer];
-	}
+    animationGroup.animations = animations;
+
+    self.animationGroup = animationGroup;
 }
 
 @end