/*
 *  Copyright (c) 2014-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.
 *
 */

#include <CoreGraphics/CGBase.h>
#import <Foundation/Foundation.h>
#import <UIKit/UIKit.h>
#import "ASBaseDefines.h"

ASDISPLAYNODE_EXTERN_C_BEGIN

BOOL ASSubclassOverridesSelector(Class superclass, Class subclass, SEL selector);
BOOL ASSubclassOverridesClassSelector(Class superclass, Class subclass, SEL selector);
void ASPerformBlockOnMainThread(void (^block)());
void ASPerformBlockOnBackgroundThread(void (^block)()); // DISPATCH_QUEUE_PRIORITY_DEFAULT 

CGFloat ASScreenScale();

CGFloat ASFloorPixelValue(CGFloat f);

CGFloat ASCeilPixelValue(CGFloat f);

CGFloat ASRoundPixelValue(CGFloat f);

BOOL ASRunningOnOS7();

ASDISPLAYNODE_EXTERN_C_END

/**
 @summary Conditionally performs UIView geometry changes in the given block without animation.
 
 Used primarily to circumvent UITableView forcing insertion animations when explicitly told not to via
 `UITableViewRowAnimationNone`. More info: https://github.com/facebook/AsyncDisplayKit/pull/445
 
 @param withoutAnimation Set to `YES` to perform given block without animation
 @param block Perform UIView geometry changes within the passed block
 */
ASDISPLAYNODE_INLINE void ASPerformBlockWithoutAnimation(BOOL withoutAnimation, void (^block)()) {
  if (withoutAnimation) {
    [UIView performWithoutAnimation:block];
  } else {
    block();
  }
}

ASDISPLAYNODE_INLINE void ASBoundsAndPositionForFrame(CGRect rect, CGPoint origin, CGPoint anchorPoint, CGRect *bounds, CGPoint *position)
{
  *bounds   = (CGRect){ origin, rect.size };
  *position = CGPointMake(rect.origin.x + rect.size.width * anchorPoint.x,
                          rect.origin.y + rect.size.height * anchorPoint.y);
}

@interface NSIndexPath (ASInverseComparison)
- (NSComparisonResult)asdk_inverseCompare:(NSIndexPath *)otherIndexPath;
@end