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* [Yoga] Implement ASYogaLayoutSpec, an experimental alternative to full-tree integration. This approach allows us to avoid any ASDisplayNode.mm integration points. However, it is not yet proven to be possible to achieve correctness with this approach. The entry point (to start calculating), and the measurement function inputs, lack the full expressiveness of ASSizeRange; we need to make sure that workarounds like using style.minSize are successful in simulating the behavior of a full Yoga tree. * [Yoga] Fix file comments, move towards <ASLayoutElement> support. * [Yoga] Important fix for simplified, non-contiguous Yoga integration. * [Yoga] Complete implementation of manual memory management (__bridge_transfer, YGNodeFree)
71 lines
2.7 KiB
Objective-C
71 lines
2.7 KiB
Objective-C
//
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// ASYogaUtilities.h
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// Texture
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//
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// Copyright (c) 2017-present, Pinterest, Inc. All rights reserved.
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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#import <AsyncDisplayKit/ASAvailability.h>
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#if YOGA /* YOGA */
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#import <AsyncDisplayKit/ASLayout.h>
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#import <AsyncDisplayKit/ASDisplayNode+Beta.h>
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extern void ASDisplayNodePerformBlockOnEveryYogaChild(ASDisplayNode *node, void(^block)(ASDisplayNode *node));
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ASDISPLAYNODE_EXTERN_C_BEGIN
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#pragma mark - Yoga Type Conversion Helpers
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YGAlign yogaAlignItems(ASStackLayoutAlignItems alignItems);
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YGJustify yogaJustifyContent(ASStackLayoutJustifyContent justifyContent);
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YGAlign yogaAlignSelf(ASStackLayoutAlignSelf alignSelf);
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YGFlexDirection yogaFlexDirection(ASStackLayoutDirection direction);
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float yogaFloatForCGFloat(CGFloat value);
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float yogaDimensionToPoints(ASDimension dimension);
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float yogaDimensionToPercent(ASDimension dimension);
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ASDimension dimensionForEdgeWithEdgeInsets(YGEdge edge, ASEdgeInsets insets);
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YGSize ASLayoutElementYogaMeasureFunc(YGNodeRef yogaNode,
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float width, YGMeasureMode widthMode,
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float height, YGMeasureMode heightMode);
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#pragma mark - Yoga Style Setter Helpers
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#define YGNODE_STYLE_SET_DIMENSION(yogaNode, property, dimension) \
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if (dimension.unit == ASDimensionUnitPoints) { \
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YGNodeStyleSet##property(yogaNode, yogaDimensionToPoints(dimension)); \
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} else if (dimension.unit == ASDimensionUnitFraction) { \
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YGNodeStyleSet##property##Percent(yogaNode, yogaDimensionToPercent(dimension)); \
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} else { \
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YGNodeStyleSet##property(yogaNode, YGUndefined); \
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}\
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#define YGNODE_STYLE_SET_DIMENSION_WITH_EDGE(yogaNode, property, dimension, edge) \
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if (dimension.unit == ASDimensionUnitPoints) { \
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YGNodeStyleSet##property(yogaNode, edge, yogaDimensionToPoints(dimension)); \
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} else if (dimension.unit == ASDimensionUnitFraction) { \
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YGNodeStyleSet##property##Percent(yogaNode, edge, yogaDimensionToPercent(dimension)); \
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} else { \
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YGNodeStyleSet##property(yogaNode, edge, YGUndefined); \
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} \
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#define YGNODE_STYLE_SET_FLOAT_WITH_EDGE(yogaNode, property, dimension, edge) \
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if (dimension.unit == ASDimensionUnitPoints) { \
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YGNodeStyleSet##property(yogaNode, edge, yogaDimensionToPoints(dimension)); \
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} else if (dimension.unit == ASDimensionUnitFraction) { \
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ASDisplayNodeAssert(NO, @"Unexpected Fraction value in applying ##property## values to YGNode"); \
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} else { \
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YGNodeStyleSet##property(yogaNode, edge, YGUndefined); \
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} \
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ASDISPLAYNODE_EXTERN_C_END
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#endif /* YOGA */
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