// MIT License // // Copyright (c) 2017-2019 MessageKit // // Permission is hereby granted, free of charge, to any person obtaining a copy // of this software and associated documentation files (the "Software"), to deal // in the Software without restriction, including without limitation the rights // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell // copies of the Software, and to permit persons to whom the Software is // furnished to do so, subject to the following conditions: // // The above copyright notice and this permission 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 Foundation import UIKit extension NSAttributedString { public func width(considering height: CGFloat) -> CGFloat { let size = size(consideringHeight: height) return size.width } public func height(considering width: CGFloat) -> CGFloat { let size = size(consideringWidth: width) return size.height } public func size(consideringHeight height: CGFloat) -> CGSize { let constraintBox = CGSize(width: .greatestFiniteMagnitude, height: height) return size(considering: constraintBox) } public func size(consideringWidth width: CGFloat) -> CGSize { let constraintBox = CGSize(width: width, height: .greatestFiniteMagnitude) return size(considering: constraintBox) } public func size(considering size: CGSize) -> CGSize { let rect = boundingRect(with: size, options: [.usesLineFragmentOrigin, .usesFontLeading], context: nil) return rect.size } }