From 7b02207537d35bfa1714bf8beafc921f717d100a Mon Sep 17 00:00:00 2001
From: 单军华
Date: Wed, 11 Jul 2018 10:47:42 +0800
Subject: [PATCH] 首次上传

---
 screendisplay/Pods/YYAsyncLayer/YYAsyncLayer/YYAsyncLayer.h |   89 ++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 89 insertions(+), 0 deletions(-)

diff --git a/screendisplay/Pods/YYAsyncLayer/YYAsyncLayer/YYAsyncLayer.h b/screendisplay/Pods/YYAsyncLayer/YYAsyncLayer/YYAsyncLayer.h
new file mode 100755
index 0000000..c8c311f
--- /dev/null
+++ b/screendisplay/Pods/YYAsyncLayer/YYAsyncLayer/YYAsyncLayer.h
@@ -0,0 +1,89 @@
+//
+//  YYAsyncLayer.h
+//  YYKit <https://github.com/ibireme/YYKit>
+//
+//  Created by ibireme on 15/4/11.
+//  Copyright (c) 2015 ibireme.
+//
+//  This source code is licensed under the MIT-style license found in the
+//  LICENSE file in the root directory of this source tree.
+//
+
+#import <UIKit/UIKit.h>
+#import <QuartzCore/QuartzCore.h>
+
+#if __has_include(<YYAsyncLayer/YYAsyncLayer.h>)
+FOUNDATION_EXPORT double YYAsyncLayerVersionNumber;
+FOUNDATION_EXPORT const unsigned char YYAsyncLayerVersionString[];
+#import <YYAsyncLayer/YYSentinel.h>
+#import <YYAsyncLayer/YYTransaction.h>
+#else
+#import "YYSentinel.h"
+#import "YYTransaction.h"
+#endif
+
+@class YYAsyncLayerDisplayTask;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ The YYAsyncLayer class is a subclass of CALayer used for render contents asynchronously.
+ 
+ @discussion When the layer need update it's contents, it will ask the delegate 
+ for a async display task to render the contents in a background queue.
+ */
+@interface YYAsyncLayer : CALayer
+/// Whether the render code is executed in background. Default is YES.
+@property BOOL displaysAsynchronously;
+@end
+
+
+/**
+ The YYAsyncLayer's delegate protocol. The delegate of the YYAsyncLayer (typically a UIView)
+ must implements the method in this protocol.
+ */
+@protocol YYAsyncLayerDelegate <NSObject>
+@required
+/// This method is called to return a new display task when the layer's contents need update.
+- (YYAsyncLayerDisplayTask *)newAsyncDisplayTask;
+@end
+
+
+/**
+ A display task used by YYAsyncLayer to render the contents in background queue.
+ */
+@interface YYAsyncLayerDisplayTask : NSObject
+
+/**
+ This block will be called before the asynchronous drawing begins.
+ It will be called on the main thread.
+ 
+ @param layer  The layer.
+ */
+@property (nullable, nonatomic, copy) void (^willDisplay)(CALayer *layer);
+
+/**
+ This block is called to draw the layer's contents.
+ 
+ @discussion This block may be called on main thread or background thread,
+ so is should be thread-safe.
+ 
+ @param context      A new bitmap content created by layer.
+ @param size         The content size (typically same as layer's bound size).
+ @param isCancelled  If this block returns `YES`, the method should cancel the
+ drawing process and return as quickly as possible.
+ */
+@property (nullable, nonatomic, copy) void (^display)(CGContextRef context, CGSize size, BOOL(^isCancelled)(void));
+
+/**
+ This block will be called after the asynchronous drawing finished.
+ It will be called on the main thread.
+ 
+ @param layer  The layer.
+ @param finished  If the draw process is cancelled, it's `NO`, otherwise it's `YES`;
+ */
+@property (nullable, nonatomic, copy) void (^didDisplay)(CALayer *layer, BOOL finished);
+
+@end
+
+NS_ASSUME_NONNULL_END

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