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77 lines
2.5 KiB
Objective-C
77 lines
2.5 KiB
Objective-C
/*
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* Copyright (c) 2014-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*
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*/
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#import <UIKit/UIKit.h>
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#import <AsyncDisplayKit/ASBaseDefines.h>
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/**
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A dimension relative to constraints to be provided in the future.
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A RelativeDimension can be one of two types:
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"Points" - Just a number. It will always resolve to exactly this amount. This is the default type.
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"Percent" - Multiplied to a provided parent amount to resolve a final amount.
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*/
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typedef NS_ENUM(NSInteger, ASRelativeDimensionType) {
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ASRelativeDimensionTypePoints,
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ASRelativeDimensionTypePercent,
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};
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typedef struct {
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ASRelativeDimensionType type;
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CGFloat value;
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} ASRelativeDimension;
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/** Expresses an inclusive range of sizes. Used to provide a simple constraint to layout. */
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typedef struct {
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CGSize min;
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CGSize max;
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} ASSizeRange;
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extern ASRelativeDimension const ASRelativeDimensionUnconstrained;
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ASDISPLAYNODE_EXTERN_C_BEGIN
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#pragma mark ASRelativeDimension
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extern ASRelativeDimension ASRelativeDimensionMake(ASRelativeDimensionType type, CGFloat value);
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extern ASRelativeDimension ASRelativeDimensionMakeWithPoints(CGFloat points);
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extern ASRelativeDimension ASRelativeDimensionMakeWithPercent(CGFloat percent);
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extern ASRelativeDimension ASRelativeDimensionCopy(ASRelativeDimension aDimension);
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extern BOOL ASRelativeDimensionEqualToRelativeDimension(ASRelativeDimension lhs, ASRelativeDimension rhs);
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extern NSString *NSStringFromASRelativeDimension(ASRelativeDimension dimension);
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extern CGFloat ASRelativeDimensionResolve(ASRelativeDimension dimension, CGFloat parent);
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#pragma mark -
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#pragma mark ASSizeRange
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extern ASSizeRange ASSizeRangeMake(CGSize min, CGSize max);
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/** Clamps the provided CGSize between the [min, max] bounds of this ASSizeRange. */
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extern CGSize ASSizeRangeClamp(ASSizeRange sizeRange, CGSize size);
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/**
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Intersects another size range. If the other size range does not overlap in either dimension, this size range
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"wins" by returning a single point within its own range that is closest to the non-overlapping range.
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*/
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extern ASSizeRange ASSizeRangeIntersect(ASSizeRange sizeRange, ASSizeRange otherSizeRange);
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extern BOOL ASSizeRangeEqualToSizeRange(ASSizeRange lhs, ASSizeRange rhs);
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extern NSString *NSStringFromASSizeRange(ASSizeRange sizeRange);
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ASDISPLAYNODE_EXTERN_C_END
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