fix renderAtSize (no retina before)

Yep/Extensions/UIImage+Yep.swift

@@ -300,15 +300,12 @@ extension UIImage {
 extension UIImage {
 
     func renderAtSize(size: CGSize) -> UIImage {
-        UIGraphicsBeginImageContext(size)
 
-        //let scale: CGFloat = self.scale
-
-        //UIGraphicsBeginImageContextWithOptions(self.size, false, scale)
+        UIGraphicsBeginImageContextWithOptions(size, false, 0) // key
 
         let context = UIGraphicsGetCurrentContext()
 
-        self.drawInRect(CGRect(origin: CGPointZero, size: size))
+        drawInRect(CGRect(origin: CGPointZero, size: size))
 
         let cgImage = CGBitmapContextCreateImage(context)
 
@@ -319,9 +316,7 @@ extension UIImage {
         return image
     }
 
-
     func maskWithImage(maskImage: UIImage) -> UIImage {
-        //UIGraphicsBeginImageContext(size)
 
         let scale = UIScreen.mainScreen().scale
         UIGraphicsBeginImageContextWithOptions(self.size, false, scale)
@@ -332,6 +327,9 @@ extension UIImage {
         transform = CGAffineTransformConcat(transform, CGAffineTransformMakeTranslation(0.0, self.size.height))
         CGContextConcatCTM(context, transform)
 
+//        CGContextSetAllowsAntialiasing(context, true)
+//        CGContextSetShouldAntialias(context, true)
+
         let drawRect = CGRect(origin: CGPointZero, size: self.size)
 
         CGContextClipToMask(context, drawRect, maskImage.CGImage)
@@ -341,7 +339,7 @@ extension UIImage {
         let roundImage = UIGraphicsGetImageFromCurrentImageContext()
 
         UIGraphicsEndImageContext()
-        
+
         return roundImage
     }
 
@@ -350,7 +348,7 @@ extension UIImage {
         let scale = UIScreen.mainScreen().scale
         let orientation: UIImageOrientation = tailDirection == .Left ? .Up : .UpMirrored
         var maskImage = UIImage(CGImage: UIImage(named: "left_tail_image_bubble")!.CGImage, scale: scale, orientation: orientation)!
-        maskImage = maskImage.resizableImageWithCapInsets(UIEdgeInsets(top: 25, left: 26, bottom: 20, right: 20), resizingMode: UIImageResizingMode.Stretch)
+        maskImage = maskImage.resizableImageWithCapInsets(UIEdgeInsets(top: 25, left: 27, bottom: 20, right: 20), resizingMode: UIImageResizingMode.Stretch)
         maskImage = maskImage.renderAtSize(size)
 
         let bubbleImage = self.fixRotation().cropToAspectRatio(size.width / size.height).resizeToTargetSize(size).maskWithImage(maskImage)
@@ -359,15 +357,15 @@ extension UIImage {
     }
 
 //    func maskWithImage(maskImage: UIImage) -> UIImage {
-//        //UIGraphicsBeginImageContext(size)
-//        
+//
+//        let scale = UIScreen.mainScreen().scale
+//
 //        let colorSpace = CGColorSpaceCreateDeviceRGB()
 //        let bitmapInfo = CGBitmapInfo(CGImageAlphaInfo.PremultipliedLast.rawValue)
-//        let context = CGBitmapContextCreate(nil, Int(maskImage.size.width), Int(maskImage.size.height), 8, 0, colorSpace, bitmapInfo)
+//        let context = CGBitmapContextCreate(nil, Int(maskImage.size.width * scale), Int(maskImage.size.height * scale), 8, 0, colorSpace, bitmapInfo)
 //
-////        var transform = CGAffineTransformConcat(CGAffineTransformIdentity, CGAffineTransformMakeScale(1.0, -1.0))
-////        transform = CGAffineTransformConcat(transform, CGAffineTransformMakeTranslation(0.0, self.size.height))
-////        CGContextConcatCTM(context, transform)
+//        CGContextSetAllowsAntialiasing(context, true)
+//        CGContextSetShouldAntialias(context, true)
 //
 //        let drawRect = CGRect(origin: CGPointZero, size: self.size)
 //
@@ -376,9 +374,8 @@ extension UIImage {
 //        CGContextDrawImage(context, drawRect, self.CGImage)
 //
 //        let cgImage = CGBitmapContextCreateImage(context)!
+//        let roundImage = UIImage(CGImage: cgImage)!
 //
-//        //UIGraphicsEndImageContext()
-//
-//        return UIImage(CGImage: cgImage)!
+//        return roundImage
 //    }
 }

Yep/Images.xcassets/left_tail_image_bubble.imageset/Contents.json

@@ -14,7 +14,7 @@
           "bottom" : 20,
           "top" : 25,
           "right" : 20,
-          "left" : 26
+          "left" : 27
         }
       }
     }