Merge pull request #39 from pakmee/swift2.3

converted to swift 2.3 and fixed auto correct with context

Author: kaandedeoglu

KDCircularProgress/KDCircularProgress.swift

@@ -13,7 +13,7 @@ public enum KDCircularProgressGlowMode {
 }
 
 @IBDesignable
-public class KDCircularProgress: UIView {
+public class KDCircularProgress: UIView,CAAnimationDelegate {
 
     private struct Conversion {
         static func degreesToRadians (value:CGFloat) -> CGFloat {
@@ -291,7 +291,7 @@ public class KDCircularProgress: UIView {
     }
 
     public func pauseAnimation() {
-        guard let presentationLayer = progressLayer.presentationLayer() as? KDCircularProgressViewLayer else { return }
+        guard let presentationLayer = progressLayer.presentationLayer() else { return }
         let currentValue = presentationLayer.angle
         progressLayer.removeAllAnimations()
         animationCompletionBlock = nil
@@ -308,10 +308,10 @@ public class KDCircularProgress: UIView {
         return progressLayer.animationForKey("angle") != nil
     }
 
-    override public func animationDidStop(anim: CAAnimation, finished flag: Bool) {
+    public func animationDidStop(anim: CAAnimation, finished flag: Bool) {
         if let completionBlock = animationCompletionBlock {
             if flag {
-               animationCompletionBlock = nil
+                animationCompletionBlock = nil
             }
 
             completionBlock(flag)
@@ -439,28 +439,34 @@ public class KDCircularProgress: UIView {
             CGContextDrawPath(ctx, .FillStroke)
 
             UIGraphicsBeginImageContextWithOptions(size, false, 0.0)
-            
-            let imageCtx = UIGraphicsGetCurrentContext()
             let reducedAngle = Utility.mod(angle, range: 360, minMax: (0, 360))
-            let fromAngle = Conversion.degreesToRadians(CGFloat(-startAngle))
-            let toAngle = Conversion.degreesToRadians(CGFloat((clockwise == true ? -reducedAngle : reducedAngle) - startAngle))
-            
-            CGContextAddArc(imageCtx, width/2.0, height/2.0, arcRadius, fromAngle, toAngle, clockwise == true ? 1 : 0)
 
-            let glowValue = GlowConstants.glowAmountForAngle(reducedAngle, glowAmount: glowAmount, glowMode: glowMode, size: width)
-            if glowValue > 0 {
-                CGContextSetShadowWithColor(imageCtx, CGSizeZero, glowValue, UIColor.blackColor().CGColor)
+            if let imageCtx = UIGraphicsGetCurrentContext(){
+                let fromAngle = Conversion.degreesToRadians(CGFloat(-startAngle))
+                let toAngle = Conversion.degreesToRadians(CGFloat((clockwise == true ? -reducedAngle : reducedAngle) - startAngle))
+                
+                CGContextAddArc(imageCtx, width/2.0, height/2.0, arcRadius, fromAngle, toAngle, clockwise == true ? 1 : 0)
+                
+                let glowValue = GlowConstants.glowAmountForAngle(reducedAngle, glowAmount: glowAmount, glowMode: glowMode, size: width)
+                if glowValue > 0 {
+                    CGContextSetShadowWithColor(imageCtx, CGSizeZero, glowValue, UIColor.blackColor().CGColor)
+                }
+                CGContextSetLineCap(imageCtx, roundedCorners == true ? .Round : .Butt)
+                CGContextSetLineWidth(imageCtx, progressLineWidth)
+                CGContextDrawPath(imageCtx, .Stroke)
+                
+                guard let currentGraphicsContext = UIGraphicsGetCurrentContext() else{
+                    return
+                }
+                
+                if let drawMask: CGImageRef = CGBitmapContextCreateImage(currentGraphicsContext){
+                    UIGraphicsEndImageContext()
+                    CGContextSaveGState(ctx)
+                    CGContextClipToMask(ctx, bounds, drawMask)
+                }else{
+                    UIGraphicsEndImageContext()
+                }
             }
-            CGContextSetLineCap(imageCtx, roundedCorners == true ? .Round : .Butt)
-            CGContextSetLineWidth(imageCtx, progressLineWidth)
-            CGContextDrawPath(imageCtx, .Stroke)
-            
-            let drawMask: CGImageRef = CGBitmapContextCreateImage(UIGraphicsGetCurrentContext())!
-            UIGraphicsEndImageContext()
-            
-            CGContextSaveGState(ctx)
-            CGContextClipToMask(ctx, bounds, drawMask)
-            
             //Gradient - Fill
             if !lerpColorMode && colorsArray.count > 1 {
                 let rgbColorsArray: [UIColor] = colorsArray.map { color in // Make sure every color in colors array is in RGB color space

KDCircularProgressExample/KDCircularProgressExample.xcodeproj/project.pbxproj

@@ -174,9 +174,11 @@
 				TargetAttributes = {
 					BC9E75851A8CE4A500B1DF3D = {
 						CreatedOnToolsVersion = 6.1.1;
+						LastSwiftMigration = 0800;
 					};
 					BC9E759A1A8CE4A500B1DF3D = {
 						CreatedOnToolsVersion = 6.1.1;
+						LastSwiftMigration = 0800;
 						TestTargetID = BC9E75851A8CE4A500B1DF3D;
 					};
 				};
@@ -353,6 +355,7 @@
 				INFOPLIST_FILE = KDCircularProgressExample/Info.plist;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_NAME = "$(TARGET_NAME)";
+				SWIFT_VERSION = 2.3;
 			};
 			name = Debug;
 		};
@@ -363,6 +366,7 @@
 				INFOPLIST_FILE = KDCircularProgressExample/Info.plist;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks";
 				PRODUCT_NAME = "$(TARGET_NAME)";
+				SWIFT_VERSION = 2.3;
 			};
 			name = Release;
 		};
@@ -381,6 +385,7 @@
 				INFOPLIST_FILE = KDCircularProgressExampleTests/Info.plist;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_NAME = "$(TARGET_NAME)";
+				SWIFT_VERSION = 2.3;
 				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/KDCircularProgressExample.app/KDCircularProgressExample";
 			};
 			name = Debug;
@@ -396,6 +401,7 @@
 				INFOPLIST_FILE = KDCircularProgressExampleTests/Info.plist;
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_NAME = "$(TARGET_NAME)";
+				SWIFT_VERSION = 2.3;
 				TEST_HOST = "$(BUILT_PRODUCTS_DIR)/KDCircularProgressExample.app/KDCircularProgressExample";
 			};
 			name = Release;