// Copyright (c) 2014-present, Facebook, Inc. All rights reserved.
//
// You are hereby granted a non-exclusive, worldwide, royalty-free license to use,
// copy, modify, and distribute this software in source code or binary form for use
// in connection with the web services and APIs provided by Facebook.
//
// As with any software that integrates with the Facebook platform, your use of
// this software is subject to the Facebook Developer Principles and Policies
// [http://developers.facebook.com/policy/]. This copyright notice shall be
// included in all copies or substantial portions of the software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

#import <UIKit/UIKit.h>

#import <FBSDKCoreKit/FBSDKMacros.h>

#import "../FBSDKMath.h"

/*!
 @abstract Insets a CGSize with the insets in a UIEdgeInsets.
 */
FBSDK_STATIC_INLINE CGSize FBSDKEdgeInsetsInsetSize(CGSize size, UIEdgeInsets insets)
{
  CGRect rect = CGRectZero;
  rect.size = size;
  return UIEdgeInsetsInsetRect(rect, insets).size;
}

/*!
 @abstract Outsets a CGSize with the insets in a UIEdgeInsets.
 */
FBSDK_STATIC_INLINE CGSize FBSDKEdgeInsetsOutsetSize(CGSize size, UIEdgeInsets insets)
{
  return CGSizeMake(insets.left + size.width + insets.right,
                    insets.top + size.height + insets.bottom);
}

/*!
 @abstract Limits a CGFloat value, using the scale to limit to pixels (instead of points).

 @discussion The limitFunction is frequention floorf, ceilf or roundf.  If the scale is 2.0,
 you may get back values of *.5 to correspond to pixels.
 */
typedef float (*FBSDKLimitFunctionType)(float);
FBSDK_STATIC_INLINE CGFloat FBSDKPointsForScreenPixels(FBSDKLimitFunctionType limitFunction,
                                                       CGFloat screenScale,
                                                       CGFloat pointValue)
{
  return limitFunction(pointValue * screenScale) / screenScale;
}

FBSDK_STATIC_INLINE CGSize FBSDKTextSize(NSString *text,
                                         UIFont *font,
                                         CGSize constrainedSize,
                                         NSLineBreakMode lineBreakMode)
{
  if (!text) {
    return CGSizeZero;
  }

  NSMutableParagraphStyle *paragraphStyle = [[NSMutableParagraphStyle alloc] init];
  paragraphStyle.lineBreakMode = lineBreakMode;
  NSDictionary *attributes = @{
                               NSFontAttributeName: font,
                               NSParagraphStyleAttributeName: paragraphStyle,
                               };
  NSAttributedString *attributedString = [[NSAttributedString alloc] initWithString:text attributes:attributes];
  CGSize size = [FBSDKMath ceilForSize:[attributedString boundingRectWithSize:constrainedSize
                                                                      options:(NSStringDrawingUsesDeviceMetrics |
                                                                               NSStringDrawingUsesLineFragmentOrigin |
                                                                               NSStringDrawingUsesFontLeading)
                                                                      context:NULL].size];
  return [FBSDKMath ceilForSize:size];
}
