// // SnapKit // // Copyright (c) 2011-Present SnapKit Team - https://github.com/SnapKit // // 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. #if os(iOS) || os(tvOS) import UIKit #else import AppKit #endif public protocol ConstraintOffsetTarget: ConstraintConstantTarget { } extension Int: ConstraintOffsetTarget { } extension UInt: ConstraintOffsetTarget { } extension Float: ConstraintOffsetTarget { } extension Double: ConstraintOffsetTarget { } extension CGFloat: ConstraintOffsetTarget { } extension ConstraintOffsetTarget { internal var constraintOffsetTargetValue: CGFloat { let offset: CGFloat if let amount = self as? Float { offset = CGFloat(amount) } else if let amount = self as? Double { offset = CGFloat(amount) } else if let amount = self as? CGFloat { offset = CGFloat(amount) } else if let amount = self as? Int { offset = CGFloat(amount) } else if let amount = self as? UInt { offset = CGFloat(amount) } else { offset = 0.0 } return offset } }