Swiftgram/AsyncDisplayKit/Layout/ASStackLayoutable.h
2015-09-17 11:39:59 -07:00

71 lines
2.1 KiB
Objective-C

/*
* Copyright (c) 2014-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*
*/
#import <AsyncDisplayKit/ASDimension.h>
#import <AsyncDisplayKit/ASStackLayoutDefines.h>
NS_ASSUME_NONNULL_BEGIN
/**
* Layout options that can be defined for an ASLayoutable being added to a ASStackLayoutSpec.
*/
@protocol ASStackLayoutable <NSObject>
/**
* @abstract Additional space to place before this object in the stacking direction.
* Used when attached to a stack layout.
*/
@property (nonatomic, readwrite) CGFloat spacingBefore;
/**
* @abstract Additional space to place after this object in the stacking direction.
* Used when attached to a stack layout.
*/
@property (nonatomic, readwrite) CGFloat spacingAfter;
/**
* @abstract If the sum of childrens' stack dimensions is less than the minimum size, should this object grow?
* Used when attached to a stack layout.
*/
@property (nonatomic, readwrite) BOOL flexGrow;
/**
* @abstract If the sum of childrens' stack dimensions is greater than the maximum size, should this object shrink?
* Used when attached to a stack layout.
*/
@property (nonatomic, readwrite) BOOL flexShrink;
/**
* @abstract Specifies the initial size in the stack dimension for this object.
* Default to ASRelativeDimensionUnconstrained.
* Used when attached to a stack layout.
*/
@property (nonatomic, readwrite) ASRelativeDimension flexBasis;
/**
* @abstract Orientation of the object along cross axis, overriding alignItems
* Used when attached to a stack layout.
*/
@property (nonatomic, readwrite) ASStackLayoutAlignSelf alignSelf;
/**
* @abstract Used for baseline alignment. The distance from the top of the object to its baseline.
*/
@property (nonatomic, readwrite) CGFloat ascender;
/**
* @abstract Used for baseline alignment. The distance from the baseline of the object to its bottom.
*/
@property (nonatomic, readwrite) CGFloat descender;
@end
NS_ASSUME_NONNULL_END