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8897614f0e
* Initial commit for adding a size constraint to ASLayoutable's * Some more commits * Fix sample projects in extra/ * Remove preferredFrameSize test of ASEditableTextNode * Remove preferredFrameSize from examples_extra * Add deprecation warning to -[ASDisplayNode preferredFrameSize] * Add deprecation warning to -[ASDisplayNode measureWithSizeRange:] * Commit * Commit * Remove ASRelativeSizeRange * Make ASRelativeSize private * Adjust examples * Improve setting of -[ASLayoutable size] with points or fractions * Add ASWrapperLayoutSpec * Improve creation of ASRelativeDimension * Add `preferredFrameSize` back and add deprecated logging * Add `layoutSpecBlock` setter and getter and add locking for it * Add better documentation and fix macros to create ASRelativeDimension * Create new ASSizeRangeMake with just a CGSize as parameter * Update Kitten and Social App Layout example * Add layoutThatFits: and deprecate measure: * Rename ASRelativeDimension to ASDimension * Fix examples for ASDimension renaming * Remove fancy height and width setter * Fix ASDimension helper * Rename -[ASLayout layoutableObject] to -[ASLayout layoutable] * Update layout related methods and more clearer documentation around how to use it * Deprecate old ASLayout class constructors * Don't unnecessary recalculate layout if constrained or parent size did not change * Use shared pointer for ASDisplayNodeLayout * Fix rebase conflicts * Add documentation and move implementation in mm file of ASDisplayNodeLayout * Fix test errors * Rename ASSize to ASLayoutableSize * Address comments * Rename setSizeFromCGSize to setSizeWithCGSize * Improve inline functions in ASDimension * Fix rebase conflicts
75 lines
2.2 KiB
Plaintext
75 lines
2.2 KiB
Plaintext
//
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// ASBackgroundLayoutSpec.mm
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// AsyncDisplayKit
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//
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// Copyright (c) 2014-present, Facebook, Inc. All rights reserved.
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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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#import "ASBackgroundLayoutSpec.h"
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#import "ASAssert.h"
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#import "ASLayout.h"
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static NSUInteger const kForegroundChildIndex = 0;
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static NSUInteger const kBackgroundChildIndex = 1;
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@interface ASBackgroundLayoutSpec ()
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@end
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@implementation ASBackgroundLayoutSpec
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- (instancetype)initWithChild:(id<ASLayoutable>)child background:(id<ASLayoutable>)background
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{
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if (!(self = [super init])) {
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return nil;
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}
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ASDisplayNodeAssertNotNil(child, @"Child cannot be nil");
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[self setChild:child forIndex:kForegroundChildIndex];
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self.background = background;
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return self;
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}
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+ (instancetype)backgroundLayoutSpecWithChild:(id<ASLayoutable>)child background:(id<ASLayoutable>)background;
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{
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return [[self alloc] initWithChild:child background:background];
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}
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/**
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* First layout the contents, then fit the background image.
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*/
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- (ASLayout *)calculateLayoutThatFits:(ASSizeRange)constrainedSize
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restrictedToSize:(ASLayoutableSize)size
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relativeToParentSize:(CGSize)parentSize
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{
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ASLayout *contentsLayout = [self.child layoutThatFits:constrainedSize parentSize:parentSize];
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NSMutableArray *sublayouts = [NSMutableArray arrayWithCapacity:2];
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if (self.background) {
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// Size background to exactly the same size.
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ASLayout *backgroundLayout = [self.background layoutThatFits:ASSizeRangeMake(contentsLayout.size)
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parentSize:parentSize];
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backgroundLayout.position = CGPointZero;
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[sublayouts addObject:backgroundLayout];
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}
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contentsLayout.position = CGPointZero;
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[sublayouts addObject:contentsLayout];
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return [ASLayout layoutWithLayoutable:self size:contentsLayout.size sublayouts:sublayouts];
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}
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- (void)setBackground:(id<ASLayoutable>)background
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{
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[super setChild:background forIndex:kBackgroundChildIndex];
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}
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- (id<ASLayoutable>)background
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{
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return [super childForIndex:kBackgroundChildIndex];
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}
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@end
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