Fixed laying out checkmark sign incorrectly

Before this commit, cgPath and lineWidth of the check mark layer were only updated on the change of selected state.
Fixed to react to size changes made to the parent layer by iOS framework
Fixes bug when CheckButton is changed to have selected state when it has no size (CGSize.zero)

Sources/iOS/CheckButton.swift

@@ -66,6 +66,9 @@ internal class CheckBoxLayer: BaseIconLayer {
         checkMarkLayer.addSublayer(checkMarkRightLayer)
         checkMarkLayer.addSublayer(checkMarkRightLayer)
         checkMarkLeftLayer.lineCap = kCALineCapSquare
         checkMarkLeftLayer.lineCap = kCALineCapSquare
         checkMarkRightLayer.lineCap = kCALineCapSquare
         checkMarkRightLayer.lineCap = kCALineCapSquare
+        checkMarkLeftLayer.strokeEnd = 0
+        checkMarkRightLayer.strokeEnd = 0
+        checkmarkColor = { checkmarkColor }() // calling didSet
     }
     }
     
     
     override func prepareForFirstAnimation() {
     override func prepareForFirstAnimation() {
@@ -103,16 +106,6 @@ internal class CheckBoxLayer: BaseIconLayer {
             
             
             checkMarkLayer.opacity = 0
             checkMarkLayer.opacity = 0
             checkMarkLayer.animate(#keyPath(CALayer.opacity), to: 1, dur: totalDuration * 0.1)
             checkMarkLayer.animate(#keyPath(CALayer.opacity), to: 1, dur: totalDuration * 0.1)
-            
-            checkMarkLeftLayer.strokeColor = checkmarkColor.cgColor
-            checkMarkRightLayer.strokeColor = checkmarkColor.cgColor
-            checkMarkLeftLayer.path = checkMarkPathLeft.cgPath
-            checkMarkRightLayer.path = checkMarkPathRigth.cgPath
-            checkMarkLeftLayer.lineWidth = lineWidth
-            checkMarkRightLayer.lineWidth = lineWidth
-            
-            checkMarkLeftLayer.strokeEnd = 0
-            checkMarkRightLayer.strokeEnd = 0
         } else {
         } else {
             borderLayer.borderWidth = borderLayerCenterDotBorderWidth
             borderLayer.borderWidth = borderLayerCenterDotBorderWidth
         }
         }
@@ -133,10 +126,16 @@ internal class CheckBoxLayer: BaseIconLayer {
         super.layoutSublayers()
         super.layoutSublayers()
         guard !isAnimating else { return }
         guard !isAnimating else { return }
         
         
-        borderLayer.frame.size = CGSize(width: sideLength, height: sideLength)
-        checkMarkLayer.frame.size = borderLayer.frame.size
-        checkMarkLeftLayer.frame.size = borderLayer.frame.size
-        checkMarkRightLayer.frame.size = borderLayer.frame.size
+        let s = CGSize(width: sideLength, height: sideLength)
+        borderLayer.frame.size = s
+        checkMarkLayer.frame.size = s
+        checkMarkLeftLayer.frame.size = s
+        checkMarkRightLayer.frame.size = s
+        
+        checkMarkLeftLayer.path = checkMarkPathLeft.cgPath
+        checkMarkRightLayer.path = checkMarkPathRigth.cgPath
+        checkMarkLeftLayer.lineWidth = lineWidth
+        checkMarkRightLayer.lineWidth = lineWidth
         
         
         borderLayer.borderWidth = borderLayerNormalBorderWidth
         borderLayer.borderWidth = borderLayerNormalBorderWidth
         borderLayer.cornerRadius = borderLayerCornerRadius
         borderLayer.cornerRadius = borderLayerCornerRadius