Swiftgram/Source/Layout/ASCenterLayoutSpec.mm
appleguy 465abb1ded [License] Simplify the Texture license to be pure Apache 2 (removing ASDK-Licenses). (#1077)
* [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.
2018-08-28 07:39:18 -07:00

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//
// ASCenterLayoutSpec.mm
// Texture
//
// Copyright (c) Facebook, Inc. and its affiliates. All rights reserved.
// Changes after 4/13/2017 are: Copyright (c) Pinterest, Inc. All rights reserved.
// Licensed under Apache 2.0: http://www.apache.org/licenses/LICENSE-2.0
//
#import <AsyncDisplayKit/ASCenterLayoutSpec.h>
#import <AsyncDisplayKit/ASLayout.h>
@implementation ASCenterLayoutSpec
{
ASCenterLayoutSpecCenteringOptions _centeringOptions;
ASCenterLayoutSpecSizingOptions _sizingOptions;
}
- (instancetype)initWithCenteringOptions:(ASCenterLayoutSpecCenteringOptions)centeringOptions
sizingOptions:(ASCenterLayoutSpecSizingOptions)sizingOptions
child:(id<ASLayoutElement>)child;
{
ASRelativeLayoutSpecPosition verticalPosition = [self verticalPositionFromCenteringOptions:centeringOptions];
ASRelativeLayoutSpecPosition horizontalPosition = [self horizontalPositionFromCenteringOptions:centeringOptions];
if (!(self = [super initWithHorizontalPosition:horizontalPosition verticalPosition:verticalPosition sizingOption:sizingOptions child:child])) {
return nil;
}
_centeringOptions = centeringOptions;
_sizingOptions = sizingOptions;
return self;
}
+ (instancetype)centerLayoutSpecWithCenteringOptions:(ASCenterLayoutSpecCenteringOptions)centeringOptions
sizingOptions:(ASCenterLayoutSpecSizingOptions)sizingOptions
child:(id<ASLayoutElement>)child NS_RETURNS_RETAINED
{
return [[self alloc] initWithCenteringOptions:centeringOptions sizingOptions:sizingOptions child:child];
}
- (void)setCenteringOptions:(ASCenterLayoutSpecCenteringOptions)centeringOptions
{
ASDisplayNodeAssert(self.isMutable, @"Cannot set properties when layout spec is not mutable");
_centeringOptions = centeringOptions;
[self setHorizontalPosition:[self horizontalPositionFromCenteringOptions:centeringOptions]];
[self setVerticalPosition:[self verticalPositionFromCenteringOptions:centeringOptions]];
}
- (void)setSizingOptions:(ASCenterLayoutSpecSizingOptions)sizingOptions
{
ASDisplayNodeAssert(self.isMutable, @"Cannot set properties when layout spec is not mutable");
_sizingOptions = sizingOptions;
[self setSizingOption:sizingOptions];
}
- (ASRelativeLayoutSpecPosition)horizontalPositionFromCenteringOptions:(ASCenterLayoutSpecCenteringOptions)centeringOptions
{
if ((centeringOptions & ASCenterLayoutSpecCenteringX) != 0) {
return ASRelativeLayoutSpecPositionCenter;
} else {
return ASRelativeLayoutSpecPositionNone;
}
}
- (ASRelativeLayoutSpecPosition)verticalPositionFromCenteringOptions:(ASCenterLayoutSpecCenteringOptions)centeringOptions
{
if ((centeringOptions & ASCenterLayoutSpecCenteringY) != 0) {
return ASRelativeLayoutSpecPositionCenter;
} else {
return ASRelativeLayoutSpecPositionNone;
}
}
@end