BasicView.swift

//  Copyright (c) 2017 Luc Dion
//  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

import PinLayout

class BasicView: PView {
    #if os(macOS)
    private var _isFlipped: Bool = true
    override var isFlipped: Bool {
        return _isFlipped
    }
    #endif

    var sizeThatFitsExpectedArea: CGFloat = 40 * 40
    var sizeThatFitSizeOffset: CGFloat = 0

    init() {
        super.init(frame: .zero)
    }

    #if os(macOS)
    convenience init(isFlipped: Bool) {
        self.init()
        _isFlipped = isFlipped
    }
    #endif

    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }

    #if os(iOS) || os(tvOS)
    override func sizeThatFits(_ size: CGSize) -> CGSize {
        return _sizeThatFits(size)
    }
    #endif

    private func _sizeThatFits(_ size: CGSize) -> CGSize {
        var newSize = CGSize()
        if size.width != CGFloat.greatestFiniteMagnitude && size.height != CGFloat.greatestFiniteMagnitude {
            newSize.width = 35
            newSize.height = 45
        } else if size.width != CGFloat.greatestFiniteMagnitude {
            newSize.width = size.width + sizeThatFitSizeOffset
            newSize.height = sizeThatFitsExpectedArea / newSize.width
        } else if size.height != CGFloat.greatestFiniteMagnitude {
            newSize.height = size.height + sizeThatFitSizeOffset
            newSize.width = sizeThatFitsExpectedArea / newSize.height
        } else {
            newSize.width = 40
            newSize.height = sizeThatFitsExpectedArea / newSize.width
        }

        return newSize
    }
}

#if os(macOS)
extension BasicView: SizeCalculable {
    func sizeThatFits(_ size: CGSize) -> CGSize {
        return _sizeThatFits(size)
    }
}
#endif