YYWebImage/Demo/YYWebImageDemo/CALayer+YYAdd.h

//
//  CALayer+YYAdd.h
//  YYKit <https://github.com/ibireme/YYKit>
//
//  Created by ibireme on 14/5/10.
//  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>

/**
 Provides extensions for `CALayer`.
 */
@interface CALayer (YYAdd)

/**
 Take snapshot without transform, image's size equals to bounds.
 */
- (UIImage *)snapshotImage;

/**
 Shortcut to set the layer's shadow
 
 @param color  Shadow Color
 @param offset Shadow offset
 @param radius Shadow radius
 */
- (void)setLayerShadow:(UIColor*)color offset:(CGSize)offset radius:(CGFloat)radius;

/**
 Remove all sublayers.
 */
- (void)removeAllSublayers;

@property (nonatomic) CGFloat left;        ///< Shortcut for frame.origin.x.
@property (nonatomic) CGFloat top;         ///< Shortcut for frame.origin.y
@property (nonatomic) CGFloat right;       ///< Shortcut for frame.origin.x + frame.size.width
@property (nonatomic) CGFloat bottom;      ///< Shortcut for frame.origin.y + frame.size.height
@property (nonatomic) CGFloat width;       ///< Shortcut for frame.size.width.
@property (nonatomic) CGFloat height;      ///< Shortcut for frame.size.height.
@property (nonatomic) CGPoint center;      ///< Shortcut for center.
@property (nonatomic) CGFloat centerX;     ///< Shortcut for center.x
@property (nonatomic) CGFloat centerY;     ///< Shortcut for center.y
@property (nonatomic) CGPoint origin;      ///< Shortcut for frame.origin.
@property (nonatomic, getter=frameSize, setter=setFrameSize:) CGSize  size; ///< Shortcut for frame.size.


@property (nonatomic) CGFloat transformRotation;     ///< key path "tranform.rotation"
@property (nonatomic) CGFloat transformRotationX;    ///< key path "tranform.rotation.x"
@property (nonatomic) CGFloat transformRotationY;    ///< key path "tranform.rotation.y"
@property (nonatomic) CGFloat transformRotationZ;    ///< key path "tranform.rotation.z"
@property (nonatomic) CGFloat transformScale;        ///< key path "tranform.scale"
@property (nonatomic) CGFloat transformScaleX;       ///< key path "tranform.scale.x"
@property (nonatomic) CGFloat transformScaleY;       ///< key path "tranform.scale.y"
@property (nonatomic) CGFloat transformScaleZ;       ///< key path "tranform.scale.z"
@property (nonatomic) CGFloat transformTranslationX; ///< key path "tranform.translation.x"
@property (nonatomic) CGFloat transformTranslationY; ///< key path "tranform.translation.y"
@property (nonatomic) CGFloat transformTranslationZ; ///< key path "tranform.translation.z"

/**
 Shortcut for transform.m34, -1/1000 is a good value.
 It should be set before other transform shortcut.
 */
@property (nonatomic, assign) CGFloat transformDepth;

/**
 Add a fade animation to layer's contents when the contents is changed.
 
 @param duration Animation duration
 @param curve    Animation curve.
 */
- (void)addFadeAnimationWithDuration:(NSTimeInterval)duration curve:(UIViewAnimationCurve)curve;

/**
 Cancel fade animation which is added with "-addFadeAnimationWithDuration:curve:".
 */
- (void)removePreviousFadeAnimation;

@end