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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.
66 lines
2.6 KiB
Plaintext
66 lines
2.6 KiB
Plaintext
//
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// ASDimensionInternal.mm
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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 <AsyncDisplayKit/ASDimensionInternal.h>
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#pragma mark - ASLayoutElementSize
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NSString *NSStringFromASLayoutElementSize(ASLayoutElementSize size)
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{
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return [NSString stringWithFormat:
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@"<ASLayoutElementSize: exact=%@, min=%@, max=%@>",
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NSStringFromASLayoutSize(ASLayoutSizeMake(size.width, size.height)),
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NSStringFromASLayoutSize(ASLayoutSizeMake(size.minWidth, size.minHeight)),
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NSStringFromASLayoutSize(ASLayoutSizeMake(size.maxWidth, size.maxHeight))];
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}
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ASDISPLAYNODE_INLINE void ASLayoutElementSizeConstrain(CGFloat minVal, CGFloat exactVal, CGFloat maxVal, CGFloat *outMin, CGFloat *outMax)
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{
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NSCAssert(!isnan(minVal), @"minVal must not be NaN");
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NSCAssert(!isnan(maxVal), @"maxVal must not be NaN");
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// Avoid use of min/max primitives since they're harder to reason
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// about in the presence of NaN (in exactVal)
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// Follow CSS: min overrides max overrides exact.
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// Begin with the min/max range
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*outMin = minVal;
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*outMax = maxVal;
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if (maxVal <= minVal) {
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// min overrides max and exactVal is irrelevant
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*outMax = minVal;
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return;
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}
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if (isnan(exactVal)) {
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// no exact value, so leave as a min/max range
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return;
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}
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if (exactVal > maxVal) {
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// clip to max value
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*outMin = maxVal;
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} else if (exactVal < minVal) {
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// clip to min value
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*outMax = minVal;
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} else {
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// use exact value
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*outMin = *outMax = exactVal;
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}
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}
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ASSizeRange ASLayoutElementSizeResolveAutoSize(ASLayoutElementSize size, const CGSize parentSize, ASSizeRange autoASSizeRange)
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{
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CGSize resolvedExact = ASLayoutSizeResolveSize(ASLayoutSizeMake(size.width, size.height), parentSize, {NAN, NAN});
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CGSize resolvedMin = ASLayoutSizeResolveSize(ASLayoutSizeMake(size.minWidth, size.minHeight), parentSize, autoASSizeRange.min);
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CGSize resolvedMax = ASLayoutSizeResolveSize(ASLayoutSizeMake(size.maxWidth, size.maxHeight), parentSize, autoASSizeRange.max);
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CGSize rangeMin, rangeMax;
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ASLayoutElementSizeConstrain(resolvedMin.width, resolvedExact.width, resolvedMax.width, &rangeMin.width, &rangeMax.width);
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ASLayoutElementSizeConstrain(resolvedMin.height, resolvedExact.height, resolvedMax.height, &rangeMin.height, &rangeMax.height);
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return {rangeMin, rangeMax};
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}
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