/*
 *  Copyright (c) 2015-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>
#import <AsyncDisplayKit/ASDimension.h>

/** 
 Expresses a size with relative dimensions.
 Used by ASStaticLayoutSpec.
 */
typedef struct {
  ASRelativeDimension width;
  ASRelativeDimension height;
} ASRelativeSize;

/**
 Expresses an inclusive range of relative sizes. Used to provide additional constraint to layout. 
 Used by ASStaticLayoutSpec.
 */
typedef struct {
  ASRelativeSize min;
  ASRelativeSize max;
} ASRelativeSizeRange;

extern ASRelativeSizeRange const ASRelativeSizeRangeUnconstrained;

ASDISPLAYNODE_EXTERN_C_BEGIN

#pragma mark -
#pragma mark ASRelativeSize

extern ASRelativeSize ASRelativeSizeMake(ASRelativeDimension width, ASRelativeDimension height);

/** Convenience constructor to provide size in Points. */
extern ASRelativeSize ASRelativeSizeMakeWithCGSize(CGSize size);

/** Resolve this relative size relative to a parent size. */
extern CGSize ASRelativeSizeResolve(ASRelativeSize relativeSize, CGSize parentSize);

extern BOOL ASRelativeSizeEqualToRelativeSize(ASRelativeSize lhs, ASRelativeSize rhs);

extern NSString *NSStringFromASRelativeSize(ASRelativeSize size);

#pragma mark -
#pragma mark ASRelativeSizeRange

extern ASRelativeSizeRange ASRelativeSizeRangeMake(ASRelativeSize min, ASRelativeSize max);

#pragma mark Convenience constructors to provide an exact size (min == max).
extern ASRelativeSizeRange ASRelativeSizeRangeMakeWithExactRelativeSize(ASRelativeSize exact);

extern ASRelativeSizeRange ASRelativeSizeRangeMakeWithExactCGSize(CGSize exact);

extern ASRelativeSizeRange ASRelativeSizeRangeMakeWithExactRelativeDimensions(ASRelativeDimension exactWidth,
                                                                              ASRelativeDimension exactHeight);

extern BOOL ASRelativeSizeRangeEqualToRelativeSizeRange(ASRelativeSizeRange lhs, ASRelativeSizeRange rhs);

/**
 Provided a parent size, compute final dimensions for this RelativeSizeRange to arrive at a SizeRange.
 */
extern ASSizeRange ASRelativeSizeRangeResolve(ASRelativeSizeRange relativeSizeRange,
                                                       CGSize parentSize);

ASDISPLAYNODE_EXTERN_C_END