From 35fb3d2ae66ba3ca1e2ddafd4857ddf66c19fd85 Mon Sep 17 00:00:00 2001
From: Garrett Moon <garrett@pinterest.com>
Date: Fri, 29 Jan 2016 14:45:18 -0800
Subject: [PATCH] Allow images returned by placeholderImage to be stretchable

---
 AsyncDisplayKit/ASDisplayNode.mm | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/AsyncDisplayKit/ASDisplayNode.mm b/AsyncDisplayKit/ASDisplayNode.mm
index aa54b85671..cd0cb2fb96 100644
--- a/AsyncDisplayKit/ASDisplayNode.mm
+++ b/AsyncDisplayKit/ASDisplayNode.mm
@@ -18,6 +18,7 @@
 #import "_ASPendingState.h"
 #import "_ASDisplayView.h"
 #import "_ASScopeTimer.h"
+#import "_ASCoreAnimationExtras.h"
 #import "ASDisplayNodeExtras.h"
 #import "ASEqualityHelpers.h"
 
@@ -615,7 +616,7 @@ static ASDisplayNodeMethodOverrides GetASDisplayNodeMethodOverrides(Class c)
     }
 
     if (_placeholderLayer) {
-      _placeholderLayer.contents = (id)_placeholderImage.CGImage;
+      [self setupPlaceholderLayerContents];
     }
   }
 
@@ -2011,13 +2012,24 @@ static BOOL ShouldUseNewRenderingRange = YES;
   if (_placeholderImage && _placeholderLayer && self.layer.contents == nil) {
     [CATransaction begin];
     [CATransaction setDisableActions:YES];
-    _placeholderLayer.contents = (id)_placeholderImage.CGImage;
+    [self setupPlaceholderLayerContents];
     _placeholderLayer.opacity = 1.0;
     [CATransaction commit];
     [self.layer addSublayer:_placeholderLayer];
   }
 }
 
+- (void)setupPlaceholderLayerContents
+{
+  BOOL stretchable = !UIEdgeInsetsEqualToEdgeInsets(_placeholderImage.capInsets, UIEdgeInsetsZero);
+  if (stretchable) {
+    ASDisplayNodeSetupLayerContentsWithResizableImage(_placeholderLayer, _placeholderImage);
+  } else {
+    _placeholderLayer.contentsScale = self.contentsScale;
+    _placeholderLayer.contents = (id)_placeholderImage.CGImage;
+  }
+}
+
 - (void)displayDidFinish
 {
   [self _pendingNodeDidDisplay:self];