Swiftgram/AsyncDisplayKit/Details/ASScrollDirection.m

37 lines
1.4 KiB
Objective-C

/* Copyright (c) 2015-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*/
#import "ASScrollDirection.h"
const ASScrollDirection ASScrollDirectionHorizontalDirections = ASScrollDirectionLeft | ASScrollDirectionRight;
const ASScrollDirection ASScrollDirectionVerticalDirections = ASScrollDirectionUp | ASScrollDirectionDown;
BOOL ASScrollDirectionContainsVerticalDirection(ASScrollDirection scrollDirection) {
return (scrollDirection & ASScrollDirectionVerticalDirections) != 0;
}
BOOL ASScrollDirectionContainsHorizontalDirection(ASScrollDirection scrollDirection) {
return (scrollDirection & ASScrollDirectionHorizontalDirections) != 0;
}
BOOL ASScrollDirectionContainsRight(ASScrollDirection scrollDirection) {
return (scrollDirection & ASScrollDirectionRight) != 0;
}
BOOL ASScrollDirectionContainsLeft(ASScrollDirection scrollDirection) {
return (scrollDirection & ASScrollDirectionLeft) != 0;
}
BOOL ASScrollDirectionContainsUp(ASScrollDirection scrollDirection) {
return (scrollDirection & ASScrollDirectionUp) != 0;
}
BOOL ASScrollDirectionContainsDown(ASScrollDirection scrollDirection) {
return (scrollDirection & ASScrollDirectionDown) != 0;
}