Add shadow key paths to the animatable keypaths list. (#64)

Author: jverkoey

src/MDMAnimatableKeyPaths.h

@@ -39,6 +39,9 @@ FOUNDATION_EXPORT MDMAnimatableKeyPath MDMKeyPathOpacity NS_SWIFT_NAME(opacity);
 FOUNDATION_EXPORT MDMAnimatableKeyPath MDMKeyPathPosition NS_SWIFT_NAME(position);
 FOUNDATION_EXPORT MDMAnimatableKeyPath MDMKeyPathRotation NS_SWIFT_NAME(rotation);
 FOUNDATION_EXPORT MDMAnimatableKeyPath MDMKeyPathScale NS_SWIFT_NAME(scale);
+FOUNDATION_EXPORT MDMAnimatableKeyPath MDMKeyPathShadowOffset NS_SWIFT_NAME(shadowOffset);
+FOUNDATION_EXPORT MDMAnimatableKeyPath MDMKeyPathShadowOpacity NS_SWIFT_NAME(shadowOpacity);
+FOUNDATION_EXPORT MDMAnimatableKeyPath MDMKeyPathShadowRadius NS_SWIFT_NAME(shadowRadius);
 FOUNDATION_EXPORT MDMAnimatableKeyPath MDMKeyPathStrokeStart NS_SWIFT_NAME(strokeStart);
 FOUNDATION_EXPORT MDMAnimatableKeyPath MDMKeyPathStrokeEnd NS_SWIFT_NAME(strokeEnd);
 FOUNDATION_EXPORT MDMAnimatableKeyPath MDMKeyPathWidth NS_SWIFT_NAME(width);

src/MDMAnimatableKeyPaths.m

@@ -23,6 +23,9 @@
 MDMAnimatableKeyPath MDMKeyPathPosition = @"position";
 MDMAnimatableKeyPath MDMKeyPathRotation = @"transform.rotation.z";
 MDMAnimatableKeyPath MDMKeyPathScale = @"transform.scale";
+MDMAnimatableKeyPath MDMKeyPathShadowOffset = @"shadowOffset";
+MDMAnimatableKeyPath MDMKeyPathShadowOpacity = @"shadowOpacity";
+MDMAnimatableKeyPath MDMKeyPathShadowRadius = @"shadowRadius";
 MDMAnimatableKeyPath MDMKeyPathStrokeStart = @"strokeStart";
 MDMAnimatableKeyPath MDMKeyPathStrokeEnd = @"strokeEnd";
 MDMAnimatableKeyPath MDMKeyPathWidth = @"bounds.size.width";

tests/unit/MotionAnimatorTests.swift

@@ -41,6 +41,10 @@ class MotionAnimatorTests: XCTestCase {
                      withValues: [CGPoint.zero, CGPoint(x: 1, y: 1)], keyPath: .position)
     animator.animate(with: timing, to: layer, withValues: [0, 1], keyPath: .rotation)
     animator.animate(with: timing, to: layer, withValues: [0, 1], keyPath: .scale)
+    animator.animate(with: timing, to: layer,
+                     withValues: [CGSize.zero, CGSize(width: 1, height: 1)], keyPath: .shadowOffset)
+    animator.animate(with: timing, to: layer, withValues: [0, 1], keyPath: .shadowOpacity)
+    animator.animate(with: timing, to: layer, withValues: [0, 1], keyPath: .shadowRadius)
     animator.animate(with: timing, to: layer, withValues: [0, 1], keyPath: .strokeStart)
     animator.animate(with: timing, to: layer, withValues: [0, 1], keyPath: .strokeEnd)
     animator.animate(with: timing, to: layer, withValues: [0, 1], keyPath: .width)

tests/unit/QuartzCoreBehavioralTests.swift

@@ -80,6 +80,9 @@ class QuartzCoreBehavioralTests: XCTestCase {
       .position: CGPoint(x: 50, y: 20),
       .rotation: 42,
       .scale: 2.5,
+      .shadowOffset: CGSize(width: 1, height: 1),
+      .shadowOpacity: 0.3,
+      .shadowRadius: 5,
       .strokeStart: 0.2,
       .strokeEnd: 0.5,
       .width: 25,

tests/unit/UIKitBehavioralTests.swift

@@ -127,6 +127,9 @@ class UIKitBehavioralTests: XCTestCase {
 
   func testSomePropertiesDoNotImplicitlyAnimate() {
     let properties: [AnimatableKeyPath: Any] = [
+      .shadowOffset: CGSize(width: 1, height: 1),
+      .shadowOpacity: 0.3,
+      .shadowRadius: 5,
       .strokeStart: 0.2,
       .strokeEnd: 0.5,
     ]
@@ -153,6 +156,9 @@ class UIKitBehavioralTests: XCTestCase {
       .position: CGPoint(x: 50, y: 20),
       .rotation: 42,
       .scale: 2.5,
+      .shadowOffset: CGSize(width: 1, height: 1),
+      .shadowOpacity: 0.3,
+      .shadowRadius: 5,
       .strokeStart: 0.2,
       .strokeEnd: 0.5,
       .width: 25,