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99fe79339d
- ASRelativeSize and ASRelativeSizeRange are used only by ASStaticLayoutNode. They are declared in a standalone header. - ASDimension contains a minimal set of new size types required to use the common layouts. Thus minimize the learning curve.
74 lines
2.5 KiB
Objective-C
74 lines
2.5 KiB
Objective-C
/*
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* Copyright (c) 2015-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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#import <AsyncDisplayKit/ASDimension.h>
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/**
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Expresses a size with relative dimensions.
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Used by ASStaticLayoutNode.
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*/
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typedef struct {
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ASRelativeDimension width;
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ASRelativeDimension height;
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} ASRelativeSize;
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/**
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Expresses an inclusive range of relative sizes. Used to provide additional constraint to layout.
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Used by ASStaticLayoutNode.
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*/
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typedef struct {
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ASRelativeSize min;
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ASRelativeSize max;
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} ASRelativeSizeRange;
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extern ASRelativeSizeRange const ASRelativeSizeRangeUnconstrained;
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ASDISPLAYNODE_EXTERN_C_BEGIN
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#pragma mark -
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#pragma mark ASRelativeSize
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extern ASRelativeSize ASRelativeSizeMake(ASRelativeDimension width, ASRelativeDimension height);
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/** Convenience constructor to provide size in Points. */
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extern ASRelativeSize ASRelativeSizeMakeWithCGSize(CGSize size);
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/** Resolve this relative size relative to a parent size. */
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extern CGSize ASRelativeSizeResolve(ASRelativeSize relativeSize, CGSize parentSize);
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extern BOOL ASRelativeSizeEqualToRelativeSize(ASRelativeSize lhs, ASRelativeSize rhs);
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extern NSString *NSStringFromASRelativeSize(ASRelativeSize size);
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#pragma mark -
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#pragma mark ASRelativeSizeRange
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extern ASRelativeSizeRange ASRelativeSizeRangeMake(ASRelativeSize min, ASRelativeSize max);
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#pragma mark Convenience constructors to provide an exact size (min == max).
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extern ASRelativeSizeRange ASRelativeSizeRangeMakeWithExactRelativeSize(ASRelativeSize exact);
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extern ASRelativeSizeRange ASRelativeSizeRangeMakeWithExactCGSize(CGSize exact);
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extern ASRelativeSizeRange ASRelativeSizeRangeMakeWithExactRelativeDimensions(ASRelativeDimension exactWidth,
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ASRelativeDimension exactHeight);
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extern BOOL ASRelativeSizeRangeEqualToRelativeSizeRange(ASRelativeSizeRange lhs, ASRelativeSizeRange rhs);
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/**
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Provided a parent size, compute final dimensions for this RelativeSizeRange to arrive at a SizeRange.
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*/
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extern ASSizeRange ASRelativeSizeRangeResolve(ASRelativeSizeRange relativeSizeRange,
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CGSize parentSize);
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ASDISPLAYNODE_EXTERN_C_END
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