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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.
65 lines
2.4 KiB
Objective-C
65 lines
2.4 KiB
Objective-C
//
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// ASScrollDirection.m
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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/ASScrollDirection.h>
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const ASScrollDirection ASScrollDirectionHorizontalDirections = ASScrollDirectionLeft | ASScrollDirectionRight;
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const ASScrollDirection ASScrollDirectionVerticalDirections = ASScrollDirectionUp | ASScrollDirectionDown;
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BOOL ASScrollDirectionContainsVerticalDirection(ASScrollDirection scrollDirection) {
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return (scrollDirection & ASScrollDirectionVerticalDirections) != 0;
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}
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BOOL ASScrollDirectionContainsHorizontalDirection(ASScrollDirection scrollDirection) {
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return (scrollDirection & ASScrollDirectionHorizontalDirections) != 0;
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}
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BOOL ASScrollDirectionContainsRight(ASScrollDirection scrollDirection) {
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return (scrollDirection & ASScrollDirectionRight) != 0;
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}
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BOOL ASScrollDirectionContainsLeft(ASScrollDirection scrollDirection) {
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return (scrollDirection & ASScrollDirectionLeft) != 0;
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}
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BOOL ASScrollDirectionContainsUp(ASScrollDirection scrollDirection) {
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return (scrollDirection & ASScrollDirectionUp) != 0;
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}
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BOOL ASScrollDirectionContainsDown(ASScrollDirection scrollDirection) {
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return (scrollDirection & ASScrollDirectionDown) != 0;
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}
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ASScrollDirection ASScrollDirectionInvertHorizontally(ASScrollDirection scrollDirection) {
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if (scrollDirection == ASScrollDirectionRight) {
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return ASScrollDirectionLeft;
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} else if (scrollDirection == ASScrollDirectionLeft) {
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return ASScrollDirectionRight;
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}
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return scrollDirection;
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}
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ASScrollDirection ASScrollDirectionInvertVertically(ASScrollDirection scrollDirection) {
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if (scrollDirection == ASScrollDirectionUp) {
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return ASScrollDirectionDown;
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} else if (scrollDirection == ASScrollDirectionDown) {
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return ASScrollDirectionUp;
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}
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return scrollDirection;
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}
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ASScrollDirection ASScrollDirectionApplyTransform(ASScrollDirection scrollDirection, CGAffineTransform transform) {
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if ((transform.a < 0) && ASScrollDirectionContainsHorizontalDirection(scrollDirection)) {
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return ASScrollDirectionInvertHorizontally(scrollDirection);
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} else if ((transform.d < 0) && ASScrollDirectionContainsVerticalDirection(scrollDirection)) {
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return ASScrollDirectionInvertVertically(scrollDirection);
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}
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return scrollDirection;
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}
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