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# Conflicts: # AsyncDisplayKit/Layout/ASLayoutSpec.h # AsyncDisplayKit/Layout/ASStackLayoutSpec.mm
98 lines
3.8 KiB
Plaintext
98 lines
3.8 KiB
Plaintext
/*
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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 "ASBaselineLayoutSpec.h"
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#import "ASStackLayoutable.h"
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#import <numeric>
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#import <vector>
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#import "ASBaseDefines.h"
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#import "ASInternalHelpers.h"
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#import "ASLayoutSpecUtilities.h"
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#import "ASStackLayoutSpecUtilities.h"
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#import "ASStackPositionedLayout.h"
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#import "ASStackUnpositionedLayout.h"
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#import "ASBaselinePositionedLayout.h"
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#import "ASThread.h"
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@implementation ASBaselineLayoutSpec
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{
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std::vector<id<ASStackLayoutable>> _children;
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ASDN::RecursiveMutex _propertyLock;
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}
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@synthesize ascender = _ascender;
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@synthesize descender = _descender;
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- (instancetype)initWithDirection:(ASStackLayoutDirection)direction spacing:(CGFloat)spacing baselineAlignment:(ASBaselineLayoutBaselineAlignment)baselineAlignment justifyContent:(ASStackLayoutJustifyContent)justifyContent alignItems:(ASStackLayoutAlignItems)alignItems children:(NSArray *)children
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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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ASDisplayNodeAssert((direction == ASStackLayoutDirectionHorizontal && baselineAlignment != ASBaselineLayoutBaselineAlignmentNone) || direction == ASStackLayoutDirectionVertical, @"baselineAlignment is set to none. If you don't need baseline alignment please use ASStackLayoutSpec");
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_direction = direction;
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_alignItems = alignItems;
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_spacing = spacing;
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_justifyContent = justifyContent;
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_baselineAlignment = baselineAlignment;
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_children = std::vector<id<ASStackLayoutable>>();
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for (id<ASStackLayoutable> child in children) {
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_children.push_back(child);
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}
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return self;
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}
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+ (instancetype)baselineLayoutSpecWithDirection:(ASStackLayoutDirection)direction spacing:(CGFloat)spacing baselineAlignment:(ASBaselineLayoutBaselineAlignment)baselineAlignment justifyContent:(ASStackLayoutJustifyContent)justifyContent alignItems:(ASStackLayoutAlignItems)alignItems children:(NSArray *)children
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{
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return [[ASBaselineLayoutSpec alloc] initWithDirection:direction spacing:spacing baselineAlignment:baselineAlignment justifyContent:justifyContent alignItems:alignItems children:children];
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}
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- (ASLayout *)measureWithSizeRange:(ASSizeRange)constrainedSize
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{
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ASStackLayoutSpecStyle stackStyle = {.direction = _direction, .spacing = _spacing, .justifyContent = _justifyContent, .alignItems = _alignItems};
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ASBaselineLayoutSpecStyle style = { .baselineAlignment = _baselineAlignment, .stackLayoutStyle = stackStyle };
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const auto unpositionedLayout = ASStackUnpositionedLayout::compute(_children, stackStyle, constrainedSize);
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const auto positionedLayout = ASStackPositionedLayout::compute(unpositionedLayout, stackStyle, constrainedSize);
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const auto baselinePositionedLayout = ASBaselinePositionedLayout::compute(positionedLayout, style, constrainedSize);
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const CGSize finalSize = directionSize(stackStyle.direction, unpositionedLayout.stackDimensionSum, baselinePositionedLayout.crossSize);
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NSArray *sublayouts = [NSArray arrayWithObjects:&baselinePositionedLayout.sublayouts[0] count:baselinePositionedLayout.sublayouts.size()];
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ASDN::MutexLocker l(_propertyLock);
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_ascender = baselinePositionedLayout.ascender;
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_descender = baselinePositionedLayout.descender;
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return [ASLayout layoutWithLayoutableObject:self
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size:ASSizeRangeClamp(constrainedSize, finalSize)
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sublayouts:sublayouts];
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}
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- (void)addChild:(id<ASBaselineLayoutable>)child
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{
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_children.push_back(child);
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}
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- (void)addChildren:(NSArray *)children
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{
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for (id<ASBaselineLayoutable> child in children) {
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[self addChild:child];
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}
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}
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@end
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