Swiftgram/Source/Layout/ASLayoutElement.mm
appleguy 6f82d0f059 [Yoga Beta] Improvements to the experimental support for Yoga layout. (#59)
* [Yoga Beta] Improvements to the experimental support for Yoga layout.

Yoga remains an unsupported / speculative feature, but these improvements are important for
the functionality of clients that are experimenting with it.

For example, without these changes, ASButtonNode is not able to lay out correctly. These
changes allow certain subtrees that use layout specs to coexist properly in a Yoga heirarchy.

The most significant change here is moving ASEdgeInsets into the #if YOGA gating. Although
this is technically an API change, this type was added with no known use cases and is
really only useful for flexbox layout specification. So, before usages of it are created,
it makes sense to constrain the Texture API surface until that time.

* [RTL] Bridge the UISemanticContentAttribute property for more convenient RTL support.

Although apps could handle this before by setting the view's property in didLoad, it's
useful to bridge this property for setting during off-main initialization.

This change also makes RTL fully functional / automatic for Yoga layout users.

* Remove RTL property addition and depend on PR #60 landing first.

* Fix warnings

* Add line to changelog
2017-04-27 15:43:29 -07:00

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//
// ASLayoutElement.mm
// Texture
//
// 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 /ASDK-Licenses directory of this source tree. An additional
// grant of patent rights can be found in the PATENTS file in the same directory.
//
// Modifications to this file made after 4/13/2017 are: Copyright (c) 2017-present,
// Pinterest, Inc. Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
#import "ASDisplayNode+FrameworkPrivate.h"
#import <AsyncDisplayKit/ASAvailability.h>
#import <AsyncDisplayKit/ASLayout.h>
#import <AsyncDisplayKit/ASLayoutElement.h>
#import <AsyncDisplayKit/ASThread.h>
#import <AsyncDisplayKit/ASObjectDescriptionHelpers.h>
#import <map>
#import <atomic>
#if YOGA
#import YOGA_HEADER_PATH
#endif
extern void ASLayoutElementPerformBlockOnEveryElement(id<ASLayoutElement> element, void(^block)(id<ASLayoutElement> element))
{
if (element) {
block(element);
}
for (id<ASLayoutElement> subelement in element.sublayoutElements) {
ASLayoutElementPerformBlockOnEveryElement(subelement, block);
}
}
#pragma mark - ASLayoutElementContext
CGFloat const ASLayoutElementParentDimensionUndefined = NAN;
CGSize const ASLayoutElementParentSizeUndefined = {ASLayoutElementParentDimensionUndefined, ASLayoutElementParentDimensionUndefined};
int32_t const ASLayoutElementContextInvalidTransitionID = 0;
int32_t const ASLayoutElementContextDefaultTransitionID = ASLayoutElementContextInvalidTransitionID + 1;
static inline ASLayoutElementContext _ASLayoutElementContextMake(int32_t transitionID)
{
struct ASLayoutElementContext context;
context.transitionID = transitionID;
return context;
}
static inline BOOL _IsValidTransitionID(int32_t transitionID)
{
return transitionID > ASLayoutElementContextInvalidTransitionID;
}
struct ASLayoutElementContext const ASLayoutElementContextNull = _ASLayoutElementContextMake(ASLayoutElementContextInvalidTransitionID);
BOOL ASLayoutElementContextIsNull(struct ASLayoutElementContext context)
{
return !_IsValidTransitionID(context.transitionID);
}
ASLayoutElementContext ASLayoutElementContextMake(int32_t transitionID)
{
NSCAssert(_IsValidTransitionID(transitionID), @"Invalid transition ID");
return _ASLayoutElementContextMake(transitionID);
}
// Note: This is a non-recursive static lock. If it needs to be recursive, use ASDISPLAYNODE_MUTEX_RECURSIVE_INITIALIZER
static ASDN::StaticMutex _layoutElementContextLock = ASDISPLAYNODE_MUTEX_INITIALIZER;
static std::map<mach_port_t, ASLayoutElementContext> layoutElementContextMap;
static inline mach_port_t ASLayoutElementGetCurrentContextKey()
{
return pthread_mach_thread_np(pthread_self());
}
void ASLayoutElementSetCurrentContext(struct ASLayoutElementContext context)
{
const mach_port_t key = ASLayoutElementGetCurrentContextKey();
ASDN::StaticMutexLocker l(_layoutElementContextLock);
layoutElementContextMap[key] = context;
}
struct ASLayoutElementContext ASLayoutElementGetCurrentContext()
{
const mach_port_t key = ASLayoutElementGetCurrentContextKey();
ASDN::StaticMutexLocker l(_layoutElementContextLock);
const auto it = layoutElementContextMap.find(key);
if (it != layoutElementContextMap.end()) {
// Found an interator with above key. "it->first" is the key itself, "it->second" is the context value.
return it->second;
}
return ASLayoutElementContextNull;
}
void ASLayoutElementClearCurrentContext()
{
const mach_port_t key = ASLayoutElementGetCurrentContextKey();
ASDN::StaticMutexLocker l(_layoutElementContextLock);
layoutElementContextMap.erase(key);
}
#pragma mark - ASLayoutElementStyle
NSString * const ASLayoutElementStyleWidthProperty = @"ASLayoutElementStyleWidthProperty";
NSString * const ASLayoutElementStyleMinWidthProperty = @"ASLayoutElementStyleMinWidthProperty";
NSString * const ASLayoutElementStyleMaxWidthProperty = @"ASLayoutElementStyleMaxWidthProperty";
NSString * const ASLayoutElementStyleHeightProperty = @"ASLayoutElementStyleHeightProperty";
NSString * const ASLayoutElementStyleMinHeightProperty = @"ASLayoutElementStyleMinHeightProperty";
NSString * const ASLayoutElementStyleMaxHeightProperty = @"ASLayoutElementStyleMaxHeightProperty";
NSString * const ASLayoutElementStyleSpacingBeforeProperty = @"ASLayoutElementStyleSpacingBeforeProperty";
NSString * const ASLayoutElementStyleSpacingAfterProperty = @"ASLayoutElementStyleSpacingAfterProperty";
NSString * const ASLayoutElementStyleFlexGrowProperty = @"ASLayoutElementStyleFlexGrowProperty";
NSString * const ASLayoutElementStyleFlexShrinkProperty = @"ASLayoutElementStyleFlexShrinkProperty";
NSString * const ASLayoutElementStyleFlexBasisProperty = @"ASLayoutElementStyleFlexBasisProperty";
NSString * const ASLayoutElementStyleAlignSelfProperty = @"ASLayoutElementStyleAlignSelfProperty";
NSString * const ASLayoutElementStyleAscenderProperty = @"ASLayoutElementStyleAscenderProperty";
NSString * const ASLayoutElementStyleDescenderProperty = @"ASLayoutElementStyleDescenderProperty";
NSString * const ASLayoutElementStyleLayoutPositionProperty = @"ASLayoutElementStyleLayoutPositionProperty";
#define ASLayoutElementStyleCallDelegate(propertyName)\
do {\
[_delegate style:self propertyDidChange:propertyName];\
} while(0)
@implementation ASLayoutElementStyle {
ASDN::RecursiveMutex __instanceLock__;
ASLayoutElementSize _size;
ASLayoutElementStyleExtensions _extensions;
std::atomic<CGFloat> _spacingBefore;
std::atomic<CGFloat> _spacingAfter;
std::atomic<CGFloat> _flexGrow;
std::atomic<CGFloat> _flexShrink;
std::atomic<ASDimension> _flexBasis;
std::atomic<ASStackLayoutAlignSelf> _alignSelf;
std::atomic<CGFloat> _ascender;
std::atomic<CGFloat> _descender;
std::atomic<CGPoint> _layoutPosition;
#if YOGA
std::atomic<ASStackLayoutDirection> _flexDirection;
std::atomic<YGDirection> _direction;
std::atomic<CGFloat> _spacing;
std::atomic<ASStackLayoutJustifyContent> _justifyContent;
std::atomic<ASStackLayoutAlignItems> _alignItems;
std::atomic<YGPositionType> _positionType;
std::atomic<ASEdgeInsets> _position;
std::atomic<ASEdgeInsets> _margin;
std::atomic<ASEdgeInsets> _padding;
std::atomic<ASEdgeInsets> _border;
std::atomic<CGFloat> _aspectRatio;
std::atomic<YGWrap> _flexWrap;
#endif
}
@dynamic width, height, minWidth, maxWidth, minHeight, maxHeight;
@dynamic preferredSize, minSize, maxSize, preferredLayoutSize, minLayoutSize, maxLayoutSize;
#pragma mark - Lifecycle
- (instancetype)initWithDelegate:(id<ASLayoutElementStyleDelegate>)delegate
{
self = [self init];
if (self) {
_delegate = delegate;
}
return self;
}
- (instancetype)init
{
self = [super init];
if (self) {
_size = ASLayoutElementSizeMake();
}
return self;
}
#pragma mark - ASLayoutElementStyleSize
- (ASLayoutElementSize)size
{
ASDN::MutexLocker l(__instanceLock__);
return _size;
}
- (void)setSize:(ASLayoutElementSize)size
{
ASDN::MutexLocker l(__instanceLock__);
_size = size;
}
#pragma mark - ASLayoutElementStyleSizeForwarding
- (ASDimension)width
{
ASDN::MutexLocker l(__instanceLock__);
return _size.width;
}
- (void)setWidth:(ASDimension)width
{
ASDN::MutexLocker l(__instanceLock__);
_size.width = width;
ASLayoutElementStyleCallDelegate(ASLayoutElementStyleWidthProperty);
}
- (ASDimension)height
{
ASDN::MutexLocker l(__instanceLock__);
return _size.height;
}
- (void)setHeight:(ASDimension)height
{
ASDN::MutexLocker l(__instanceLock__);
_size.height = height;
ASLayoutElementStyleCallDelegate(ASLayoutElementStyleHeightProperty);
}
- (ASDimension)minWidth
{
ASDN::MutexLocker l(__instanceLock__);
return _size.minWidth;
}
- (void)setMinWidth:(ASDimension)minWidth
{
ASDN::MutexLocker l(__instanceLock__);
_size.minWidth = minWidth;
ASLayoutElementStyleCallDelegate(ASLayoutElementStyleMinWidthProperty);
}
- (ASDimension)maxWidth
{
ASDN::MutexLocker l(__instanceLock__);
return _size.maxWidth;
}
- (void)setMaxWidth:(ASDimension)maxWidth
{
ASDN::MutexLocker l(__instanceLock__);
_size.maxWidth = maxWidth;
ASLayoutElementStyleCallDelegate(ASLayoutElementStyleMaxWidthProperty);
}
- (ASDimension)minHeight
{
ASDN::MutexLocker l(__instanceLock__);
return _size.minHeight;
}
- (void)setMinHeight:(ASDimension)minHeight
{
ASDN::MutexLocker l(__instanceLock__);
_size.minHeight = minHeight;
ASLayoutElementStyleCallDelegate(ASLayoutElementStyleMinHeightProperty);
}
- (ASDimension)maxHeight
{
ASDN::MutexLocker l(__instanceLock__);
return _size.maxHeight;
}
- (void)setMaxHeight:(ASDimension)maxHeight
{
ASDN::MutexLocker l(__instanceLock__);
_size.maxHeight = maxHeight;
ASLayoutElementStyleCallDelegate(ASLayoutElementStyleMaxHeightProperty);
}
#pragma mark - ASLayoutElementStyleSizeHelpers
// We explicitly not call the setter for (max/min) width and height to avoid locking overhead
- (void)setPreferredSize:(CGSize)preferredSize
{
ASDN::MutexLocker l(__instanceLock__);
_size.width = ASDimensionMakeWithPoints(preferredSize.width);
_size.height = ASDimensionMakeWithPoints(preferredSize.height);
ASLayoutElementStyleCallDelegate(ASLayoutElementStyleWidthProperty);
ASLayoutElementStyleCallDelegate(ASLayoutElementStyleHeightProperty);
}
- (CGSize)preferredSize
{
ASDN::MutexLocker l(__instanceLock__);
if (_size.width.unit == ASDimensionUnitFraction) {
NSCAssert(NO, @"Cannot get preferredSize of element with fractional width. Width: %@.", NSStringFromASDimension(_size.width));
return CGSizeZero;
}
if (_size.height.unit == ASDimensionUnitFraction) {
NSCAssert(NO, @"Cannot get preferredSize of element with fractional height. Height: %@.", NSStringFromASDimension(_size.height));
return CGSizeZero;
}
return CGSizeMake(_size.width.value, _size.height.value);
}
- (void)setMinSize:(CGSize)minSize
{
ASDN::MutexLocker l(__instanceLock__);
_size.minWidth = ASDimensionMakeWithPoints(minSize.width);
_size.minHeight = ASDimensionMakeWithPoints(minSize.height);
ASLayoutElementStyleCallDelegate(ASLayoutElementStyleMinWidthProperty);
ASLayoutElementStyleCallDelegate(ASLayoutElementStyleMinHeightProperty);
}
- (void)setMaxSize:(CGSize)maxSize
{
ASDN::MutexLocker l(__instanceLock__);
_size.maxWidth = ASDimensionMakeWithPoints(maxSize.width);
_size.maxHeight = ASDimensionMakeWithPoints(maxSize.height);
ASLayoutElementStyleCallDelegate(ASLayoutElementStyleMaxWidthProperty);
ASLayoutElementStyleCallDelegate(ASLayoutElementStyleMaxHeightProperty);
}
- (ASLayoutSize)preferredLayoutSize
{
ASDN::MutexLocker l(__instanceLock__);
return ASLayoutSizeMake(_size.width, _size.height);
}
- (void)setPreferredLayoutSize:(ASLayoutSize)preferredLayoutSize
{
ASDN::MutexLocker l(__instanceLock__);
_size.width = preferredLayoutSize.width;
_size.height = preferredLayoutSize.height;
ASLayoutElementStyleCallDelegate(ASLayoutElementStyleWidthProperty);
ASLayoutElementStyleCallDelegate(ASLayoutElementStyleHeightProperty);
}
- (ASLayoutSize)minLayoutSize
{
ASDN::MutexLocker l(__instanceLock__);
return ASLayoutSizeMake(_size.minWidth, _size.minHeight);
}
- (void)setMinLayoutSize:(ASLayoutSize)minLayoutSize
{
ASDN::MutexLocker l(__instanceLock__);
_size.minWidth = minLayoutSize.width;
_size.minHeight = minLayoutSize.height;
ASLayoutElementStyleCallDelegate(ASLayoutElementStyleMinWidthProperty);
ASLayoutElementStyleCallDelegate(ASLayoutElementStyleMinHeightProperty);
}
- (ASLayoutSize)maxLayoutSize
{
ASDN::MutexLocker l(__instanceLock__);
return ASLayoutSizeMake(_size.maxWidth, _size.maxHeight);
}
- (void)setMaxLayoutSize:(ASLayoutSize)maxLayoutSize
{
ASDN::MutexLocker l(__instanceLock__);
_size.maxWidth = maxLayoutSize.width;
_size.maxHeight = maxLayoutSize.height;
ASLayoutElementStyleCallDelegate(ASLayoutElementStyleMaxWidthProperty);
ASLayoutElementStyleCallDelegate(ASLayoutElementStyleMaxHeightProperty);
}
#pragma mark - ASStackLayoutElement
- (void)setSpacingBefore:(CGFloat)spacingBefore
{
_spacingBefore.store(spacingBefore);
ASLayoutElementStyleCallDelegate(ASLayoutElementStyleSpacingBeforeProperty);
}
- (CGFloat)spacingBefore
{
return _spacingBefore.load();
}
- (void)setSpacingAfter:(CGFloat)spacingAfter
{
_spacingAfter.store(spacingAfter);
ASLayoutElementStyleCallDelegate(ASLayoutElementStyleSpacingAfterProperty);
}
- (CGFloat)spacingAfter
{
return _spacingAfter.load();
}
- (void)setFlexGrow:(CGFloat)flexGrow
{
_flexGrow.store(flexGrow);
ASLayoutElementStyleCallDelegate(ASLayoutElementStyleFlexGrowProperty);
}
- (CGFloat)flexGrow
{
return _flexGrow.load();
}
- (void)setFlexShrink:(CGFloat)flexShrink
{
_flexShrink.store(flexShrink);
ASLayoutElementStyleCallDelegate(ASLayoutElementStyleFlexShrinkProperty);
}
- (CGFloat)flexShrink
{
return _flexShrink.load();
}
- (void)setFlexBasis:(ASDimension)flexBasis
{
_flexBasis.store(flexBasis);
ASLayoutElementStyleCallDelegate(ASLayoutElementStyleFlexBasisProperty);
}
- (ASDimension)flexBasis
{
return _flexBasis.load();
}
- (void)setAlignSelf:(ASStackLayoutAlignSelf)alignSelf
{
_alignSelf.store(alignSelf);
ASLayoutElementStyleCallDelegate(ASLayoutElementStyleAlignSelfProperty);
}
- (ASStackLayoutAlignSelf)alignSelf
{
return _alignSelf.load();
}
- (void)setAscender:(CGFloat)ascender
{
_ascender.store(ascender);
ASLayoutElementStyleCallDelegate(ASLayoutElementStyleAscenderProperty);
}
- (CGFloat)ascender
{
return _ascender.load();
}
- (void)setDescender:(CGFloat)descender
{
_descender.store(descender);
ASLayoutElementStyleCallDelegate(ASLayoutElementStyleDescenderProperty);
}
- (CGFloat)descender
{
return _descender.load();
}
#pragma mark - ASAbsoluteLayoutElement
- (void)setLayoutPosition:(CGPoint)layoutPosition
{
_layoutPosition.store(layoutPosition);
ASLayoutElementStyleCallDelegate(ASLayoutElementStyleLayoutPositionProperty);
}
- (CGPoint)layoutPosition
{
return _layoutPosition.load();
}
#pragma mark - Extensions
- (void)setLayoutOptionExtensionBool:(BOOL)value atIndex:(int)idx
{
NSCAssert(idx < kMaxLayoutElementBoolExtensions, @"Setting index outside of max bool extensions space");
ASDN::MutexLocker l(__instanceLock__);
_extensions.boolExtensions[idx] = value;
}
- (BOOL)layoutOptionExtensionBoolAtIndex:(int)idx\
{
NSCAssert(idx < kMaxLayoutElementBoolExtensions, @"Accessing index outside of max bool extensions space");
ASDN::MutexLocker l(__instanceLock__);
return _extensions.boolExtensions[idx];
}
- (void)setLayoutOptionExtensionInteger:(NSInteger)value atIndex:(int)idx
{
NSCAssert(idx < kMaxLayoutElementStateIntegerExtensions, @"Setting index outside of max integer extensions space");
ASDN::MutexLocker l(__instanceLock__);
_extensions.integerExtensions[idx] = value;
}
- (NSInteger)layoutOptionExtensionIntegerAtIndex:(int)idx
{
NSCAssert(idx < kMaxLayoutElementStateIntegerExtensions, @"Accessing index outside of max integer extensions space");
ASDN::MutexLocker l(__instanceLock__);
return _extensions.integerExtensions[idx];
}
- (void)setLayoutOptionExtensionEdgeInsets:(UIEdgeInsets)value atIndex:(int)idx
{
NSCAssert(idx < kMaxLayoutElementStateEdgeInsetExtensions, @"Setting index outside of max edge insets extensions space");
ASDN::MutexLocker l(__instanceLock__);
_extensions.edgeInsetsExtensions[idx] = value;
}
- (UIEdgeInsets)layoutOptionExtensionEdgeInsetsAtIndex:(int)idx
{
NSCAssert(idx < kMaxLayoutElementStateEdgeInsetExtensions, @"Accessing index outside of max edge insets extensions space");
ASDN::MutexLocker l(__instanceLock__);
return _extensions.edgeInsetsExtensions[idx];
}
#pragma mark - Debugging
- (NSString *)description
{
return ASObjectDescriptionMake(self, [self propertiesForDescription]);
}
- (NSMutableArray<NSDictionary *> *)propertiesForDescription
{
NSMutableArray<NSDictionary *> *result = [NSMutableArray array];
if ((self.minLayoutSize.width.unit != ASDimensionUnitAuto ||
self.minLayoutSize.height.unit != ASDimensionUnitAuto)) {
[result addObject:@{ @"minLayoutSize" : NSStringFromASLayoutSize(self.minLayoutSize) }];
}
if ((self.preferredLayoutSize.width.unit != ASDimensionUnitAuto ||
self.preferredLayoutSize.height.unit != ASDimensionUnitAuto)) {
[result addObject:@{ @"preferredSize" : NSStringFromASLayoutSize(self.preferredLayoutSize) }];
}
if ((self.maxLayoutSize.width.unit != ASDimensionUnitAuto ||
self.maxLayoutSize.height.unit != ASDimensionUnitAuto)) {
[result addObject:@{ @"maxLayoutSize" : NSStringFromASLayoutSize(self.maxLayoutSize) }];
}
if (self.alignSelf != ASStackLayoutAlignSelfAuto) {
[result addObject:@{ @"alignSelf" : [@[@"ASStackLayoutAlignSelfAuto",
@"ASStackLayoutAlignSelfStart",
@"ASStackLayoutAlignSelfEnd",
@"ASStackLayoutAlignSelfCenter",
@"ASStackLayoutAlignSelfStretch"] objectAtIndex:self.alignSelf] }];
}
if (self.ascender != 0) {
[result addObject:@{ @"ascender" : @(self.ascender) }];
}
if (self.descender != 0) {
[result addObject:@{ @"descender" : @(self.descender) }];
}
if (ASDimensionEqualToDimension(self.flexBasis, ASDimensionAuto) == NO) {
[result addObject:@{ @"flexBasis" : NSStringFromASDimension(self.flexBasis) }];
}
if (self.flexGrow != 0) {
[result addObject:@{ @"flexGrow" : @(self.flexGrow) }];
}
if (self.flexShrink != 0) {
[result addObject:@{ @"flexShrink" : @(self.flexShrink) }];
}
if (self.spacingAfter != 0) {
[result addObject:@{ @"spacingAfter" : @(self.spacingAfter) }];
}
if (self.spacingBefore != 0) {
[result addObject:@{ @"spacingBefore" : @(self.spacingBefore) }];
}
if (CGPointEqualToPoint(self.layoutPosition, CGPointZero) == NO) {
[result addObject:@{ @"layoutPosition" : [NSValue valueWithCGPoint:self.layoutPosition] }];
}
return result;
}
#pragma mark - Yoga Flexbox Properties
#if YOGA
- (ASStackLayoutDirection)flexDirection { return _flexDirection.load(); }
- (YGDirection)direction { return _direction.load(); }
- (CGFloat)spacing { return _spacing.load(); }
- (ASStackLayoutJustifyContent)justifyContent { return _justifyContent.load(); }
- (ASStackLayoutAlignItems)alignItems { return _alignItems.load(); }
- (YGPositionType)positionType { return _positionType.load(); }
- (ASEdgeInsets)position { return _position.load(); }
- (ASEdgeInsets)margin { return _margin.load(); }
- (ASEdgeInsets)padding { return _padding.load(); }
- (ASEdgeInsets)border { return _border.load(); }
- (CGFloat)aspectRatio { return _aspectRatio.load(); }
- (YGWrap)flexWrap { return _flexWrap.load(); }
- (void)setFlexDirection:(ASStackLayoutDirection)flexDirection { _flexDirection.store(flexDirection); }
- (void)setDirection:(YGDirection)direction { _direction.store(direction); }
- (void)setSpacing:(CGFloat)spacing { _spacing.store(spacing); }
- (void)setJustifyContent:(ASStackLayoutJustifyContent)justify { _justifyContent.store(justify); }
- (void)setAlignItems:(ASStackLayoutAlignItems)alignItems { _alignItems.store(alignItems); }
- (void)setPositionType:(YGPositionType)positionType { _positionType.store(positionType); }
- (void)setPosition:(ASEdgeInsets)position { _position.store(position); }
- (void)setMargin:(ASEdgeInsets)margin { _margin.store(margin); }
- (void)setPadding:(ASEdgeInsets)padding { _padding.store(padding); }
- (void)setBorder:(ASEdgeInsets)border { _border.store(border); }
- (void)setAspectRatio:(CGFloat)aspectRatio { _aspectRatio.store(aspectRatio); }
- (void)setFlexWrap:(YGWrap)flexWrap { _flexWrap.store(flexWrap); }
#endif
#pragma mark Deprecated
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wdeprecated-declarations"
- (ASRelativeSizeRange)sizeRange
{
return ASRelativeSizeRangeMake(self.minLayoutSize, self.maxLayoutSize);
}
- (void)setSizeRange:(ASRelativeSizeRange)sizeRange
{
self.minLayoutSize = sizeRange.min;
self.maxLayoutSize = sizeRange.max;
}
#pragma clang diagnostic pop
@end