From cb9a31394fc86d4bc2fcff0ac49ad8b895514f2a Mon Sep 17 00:00:00 2001
From: Yury Popov <github@phoenix.dj>
Date: Thu, 14 May 2015 17:40:10 +0300
Subject: [PATCH] Pattern layer display fix

---
 pxSVG/pxSVGRenderPath.m | 32 +++++++++++++++++++++++++++++---
 1 file changed, 29 insertions(+), 3 deletions(-)

diff --git a/pxSVG/pxSVGRenderPath.m b/pxSVG/pxSVGRenderPath.m
index 9d4fa98..1a40b55 100644
--- a/pxSVG/pxSVGRenderPath.m
+++ b/pxSVG/pxSVGRenderPath.m
@@ -35,8 +35,8 @@ @interface pxSVGRenderPath ()
 @end
 
 @interface pxSVGPatternLayer : CALayer
-@property CALayer *patternLayer;
-@property CATransform3D patternTransform;
+@property (nonatomic) CALayer *patternLayer;
+@property (nonatomic) CATransform3D patternTransform;
 @end
 
 @implementation pxSVGPatternLayer
@@ -49,11 +49,37 @@ + (instancetype)layer
 - (instancetype)init
 {
     self = [super init];
-    self.delegate = self;
     [self setNeedsDisplayOnBoundsChange:YES];
+    [self setNeedsDisplay];
     return self;
 }
 
+- (void)dealloc
+{
+    self.patternLayer = nil;
+}
+
+- (void)setPatternLayer:(CALayer *)patternLayer
+{
+    _patternLayer = patternLayer;
+    [self setNeedsDisplay];
+}
+
+- (void)setPatternTransform:(CATransform3D)patternTransform
+{
+    _patternTransform = patternTransform;
+    [self setNeedsDisplay];
+}
+
+- (void)setNeedsDisplay
+{
+    if ([NSThread isMainThread]) return [super setNeedsDisplay];
+    __weak id weakself = self;
+    [[NSOperationQueue mainQueue] addOperationWithBlock:^{
+        if (weakself) [weakself setNeedsDisplay];
+    }];
+}
+
 - (void)drawInContext:(CGContextRef)ctx
 {
     CGRect r = CGContextGetClipBoundingBox(ctx);