/*
 *  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 <UIKit/UIKit.h>
#import <AsyncDisplayKit/ASBaseDefines.h>

/**
 A dimension relative to constraints to be provided in the future.
 A RelativeDimension can be one of two types:
 
 "Points" - Just a number. It will always resolve to exactly this amount. This is the default type.

 "Percent" - Multiplied to a provided parent amount to resolve a final amount.
 */
typedef NS_ENUM(NSInteger, ASRelativeDimensionType) {
  ASRelativeDimensionTypePoints,
  ASRelativeDimensionTypePercent,
};

typedef struct {
  ASRelativeDimensionType type;
  CGFloat value;
} ASRelativeDimension;

/** Expresses an inclusive range of sizes. Used to provide a simple constraint to layout. */
typedef struct {
  CGSize min;
  CGSize max;
} ASSizeRange;

extern ASRelativeDimension const ASRelativeDimensionUnconstrained;

ASDISPLAYNODE_EXTERN_C_BEGIN

#pragma mark ASRelativeDimension

extern ASRelativeDimension ASRelativeDimensionMake(ASRelativeDimensionType type, CGFloat value);

extern ASRelativeDimension ASRelativeDimensionMakeWithPoints(CGFloat points);

extern ASRelativeDimension ASRelativeDimensionMakeWithPercent(CGFloat percent);

extern ASRelativeDimension ASRelativeDimensionCopy(ASRelativeDimension aDimension);

extern BOOL ASRelativeDimensionEqualToRelativeDimension(ASRelativeDimension lhs, ASRelativeDimension rhs);

extern NSString *NSStringFromASRelativeDimension(ASRelativeDimension dimension);

extern CGFloat ASRelativeDimensionResolve(ASRelativeDimension dimension, CGFloat parent);

#pragma mark -
#pragma mark ASSizeRange

extern ASSizeRange ASSizeRangeMake(CGSize min, CGSize max);

/** Clamps the provided CGSize between the [min, max] bounds of this ASSizeRange. */
extern CGSize ASSizeRangeClamp(ASSizeRange sizeRange, CGSize size);

/**
 Intersects another size range. If the other size range does not overlap in either dimension, this size range
 "wins" by returning a single point within its own range that is closest to the non-overlapping range.
 */
extern ASSizeRange ASSizeRangeIntersect(ASSizeRange sizeRange, ASSizeRange otherSizeRange);

extern BOOL ASSizeRangeEqualToSizeRange(ASSizeRange lhs, ASSizeRange rhs);

extern NSString *NSStringFromASSizeRange(ASSizeRange sizeRange);

ASDISPLAYNODE_EXTERN_C_END