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* [License] Simplify the Texture license to be pure Apache 2 (removing ASDK-Licenses) With permission of the Facebook Open Source team, we are simplifying the Texture license so that clients can rely on the Apache 2 terms that most of Texture is already covered by. This means that code originally forked from AsyncDisplayKit will be re-licensed from "BSD 3-clause + PATENTS v2" to Apache 2 without a PATENTS file. After getting confirmation that the updates to these core files look good, we'll propagate this new license header to all files (in this same PR) and get sign-off from all parties before landing. * [License] Update all Texture source files to be pure Apache 2. * Changelog entry for Apache 2 license update. * Revert "[License] Update all Texture source files to be pure Apache 2." This reverts commit ffa0fbbba9717d871dd16c4b07539f2f8208fc2b. * [License] Update all Texture source files to be pure Apache 2, maintaining copyrights. * [License] Update CONTRIBUTING, README, Podspec & Dangerfile.
74 lines
2.9 KiB
Objective-C
74 lines
2.9 KiB
Objective-C
//
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// ASStackUnpositionedLayout.h
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// Texture
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//
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// Copyright (c) Facebook, Inc. and its affiliates. All rights reserved.
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// Changes after 4/13/2017 are: Copyright (c) Pinterest, Inc. All rights reserved.
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// Licensed under Apache 2.0: http://www.apache.org/licenses/LICENSE-2.0
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//
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#import <vector>
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#import <AsyncDisplayKit/ASLayout.h>
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#import <AsyncDisplayKit/ASStackLayoutSpecUtilities.h>
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#import <AsyncDisplayKit/ASStackLayoutSpec.h>
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/** The threshold that determines if a violation has actually occurred. */
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AS_EXTERN CGFloat const kViolationEpsilon;
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struct ASStackLayoutSpecChild {
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/** The original source child. */
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id<ASLayoutElement> element;
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/** Style object of element. */
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ASLayoutElementStyle *style;
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/** Size object of the element */
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ASLayoutElementSize size;
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};
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struct ASStackLayoutSpecItem {
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/** The original source child. */
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ASStackLayoutSpecChild child;
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/** The proposed layout or nil if no is calculated yet. */
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ASLayout *layout;
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};
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struct ASStackUnpositionedLine {
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/** The set of proposed children in this line, each contains child layout, not yet positioned. */
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std::vector<ASStackLayoutSpecItem> items;
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/** The total size of the children in the stack dimension, including all spacing. */
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CGFloat stackDimensionSum;
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/** The size in the cross dimension */
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CGFloat crossSize;
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/** The baseline of the stack which baseline aligned children should align to */
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CGFloat baseline;
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};
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/** Represents a set of stack layout children that have their final layout computed, but are not yet positioned. */
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struct ASStackUnpositionedLayout {
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/** The set of proposed lines, each contains child layouts, not yet positioned. */
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const std::vector<ASStackUnpositionedLine> lines;
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/**
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* In a single line stack (e.g no wrao), this is the total size of the children in the stack dimension, including all spacing.
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* In a multi-line stack, this is the largest stack dimension among lines.
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*/
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const CGFloat stackDimensionSum;
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const CGFloat crossDimensionSum;
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/** Given a set of children, computes the unpositioned layouts for those children. */
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static ASStackUnpositionedLayout compute(const std::vector<ASStackLayoutSpecChild> &children,
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const ASStackLayoutSpecStyle &style,
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const ASSizeRange &sizeRange,
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const BOOL concurrent);
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static CGFloat baselineForItem(const ASStackLayoutSpecStyle &style,
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const ASStackLayoutSpecItem &l);
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static CGFloat computeStackViolation(const CGFloat stackDimensionSum,
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const ASStackLayoutSpecStyle &style,
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const ASSizeRange &sizeRange);
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static CGFloat computeCrossViolation(const CGFloat crossDimensionSum,
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const ASStackLayoutSpecStyle &style,
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const ASSizeRange &sizeRange);
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};
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