62 lines
2.3 KiB
Swift
62 lines
2.3 KiB
Swift
//
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// Copyright (c) 2017 Touch Instinct
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the Software), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED AS IS, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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//
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import UIKit
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public extension UIView {
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/**
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Place and fix view to parent view's center
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- parameter size: desired view size, by default size is equal parent's size
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*/
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func setToCenter(withSize size: CGSize? = nil) {
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guard let parent = superview else {
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return
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}
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translatesAutoresizingMaskIntoConstraints = false
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guard let size = size else {
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scaleToFill()
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return
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}
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centerXAnchor.constraint(equalTo: parent.centerXAnchor).isActive = true
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centerYAnchor.constraint(equalTo: parent.centerYAnchor).isActive = true
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heightAnchor.constraint(equalToConstant: size.height).isActive = true
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widthAnchor.constraint(equalToConstant: size.width).isActive = true
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}
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private func scaleToFill() {
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guard let superview = superview else {
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return
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}
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topAnchor.constraint(equalTo: superview.topAnchor).isActive = true
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bottomAnchor.constraint(equalTo: superview.bottomAnchor).isActive = true
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leftAnchor.constraint(equalTo: superview.leftAnchor).isActive = true
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rightAnchor.constraint(equalTo: superview.rightAnchor).isActive = true
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}
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}
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