Use ASDisplayNodeScreenScale().

ASImageNode and ASHighlightOverlayLayer were both using
[[UIScreen mainScreen] scale] directly.  Bad.  No cookie.  Use
ASDisplayNodeScreenScale() instead.

(Also, regenerate Xcode project with Xcode 6 and current CocoaPods.)

AsyncDisplayKit/ASDisplayNode.mm

@@ -47,7 +47,7 @@ BOOL ASDisplayNodeSubclassOverridesSelector(Class subclass, SEL selector)
   return (superclassIMP != subclassIMP);
 }
 
-static CGFloat ASDisplayNodeScreenScale()
+CGFloat ASDisplayNodeScreenScale()
 {
   static CGFloat screenScale = 0.0;
   static dispatch_once_t onceToken;

AsyncDisplayKit/ASImageNode.mm

@@ -8,10 +8,11 @@
 
 #import "ASImageNode.h"
 
-#import <AsyncDisplayKit/_ASDisplayLayer.h>
 #import <AsyncDisplayKit/_ASCoreAnimationExtras.h>
+#import <AsyncDisplayKit/_ASDisplayLayer.h>
 #import <AsyncDisplayKit/ASAssert.h>
 #import <AsyncDisplayKit/ASDisplayNode+Subclasses.h>
+#import <AsyncDisplayKit/ASDisplayNodeInternal.h>
 
 #import "ASImageNode+CGExtras.h"
 
@@ -83,7 +84,7 @@
     return nil;
 
   // TODO can this be removed?
-  self.contentsScale = [[UIScreen mainScreen] scale];
+  self.contentsScale = ASDisplayNodeScreenScale();
   self.contentMode = UIViewContentModeScaleAspectFill;
   self.opaque = YES;
 

AsyncDisplayKit/Details/ASHighlightOverlayLayer.mm

@@ -10,6 +10,8 @@
 
 #import <UIKit/UIKit.h>
 
+#import <AsyncDisplayKit/ASDisplayNodeInternal.h>
+
 static const CGFloat kCornerRadius = 2.5;
 static const UIEdgeInsets padding = {2, 4, 1.5, 4};
 
@@ -21,7 +23,7 @@ static const UIEdgeInsets padding = {2, 4, 1.5, 4};
 + (id)defaultValueForKey:(NSString *)key
 {
   if ([key isEqualToString:@"contentsScale"]) {
-    return [NSNumber numberWithFloat:[[UIScreen mainScreen] scale]];
+    return @(ASDisplayNodeScreenScale());
   } else if ([key isEqualToString:@"highlightColor"]) {
     CGFloat components[] = {0, 0, 0, 0.25};
     CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();

AsyncDisplayKit/Private/ASDisplayNodeInternal.h

@@ -19,6 +19,7 @@
 #import "ASThread.h"
 
 BOOL ASDisplayNodeSubclassOverridesSelector(Class subclass, SEL selector);
+CGFloat ASDisplayNodeScreenScale();
 
 @class _ASPendingState;
 

Podfile.lock

@@ -7,4 +7,4 @@ DEPENDENCIES:
 SPEC CHECKSUMS:
   OCMock: 6db79185520e24f9f299548f2b8b07e41d881bd5
 
-COCOAPODS: 0.34.2
+COCOAPODS: 0.34.4