//
//  UIImageView+Calculations.swift
//
//  Copyright (c) 2016 Orderella Ltd. (http://orderella.co.uk)
//  Author - Martin Wildfeuer (http://www.mwfire.de)
//
//  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

internal extension UIImageView {

    /*!
     Calculates the height of the the UIImageView has to
     have so the image is displayed correctly
     - returns: Height to set on the imageView
     */
    func pv_heightForImageView() -> CGFloat {
        guard let image = image, image.size.height > 0 else {
            return 0.0
        }
        let width = bounds.size.width
        let ratio = image.size.height / image.size.width
        return width * ratio
    }
}