mirror of https://github.com/SnapKit/SnapKit
103 lines
4.3 KiB
Swift
103 lines
4.3 KiB
Swift
//
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// ConstraintMaker.swift
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// Snappy
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//
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// Copyright (c) 2011-2014 Masonry Team - https://github.com/Masonry
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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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#if os(iOS)
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import UIKit
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#else
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import AppKit
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#endif
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/**
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* ConstraintMaker is the maker in snappy that gets all constraints kickstarted
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*/
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class ConstraintMaker {
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var left: Constraint { return addConstraint(ConstraintAttributes.Left) }
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var top: Constraint { return addConstraint(ConstraintAttributes.Top) }
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var right: Constraint { return addConstraint(ConstraintAttributes.Right) }
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var bottom: Constraint { return addConstraint(ConstraintAttributes.Bottom) }
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var leading: Constraint { return addConstraint(ConstraintAttributes.Leading) }
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var trailing: Constraint { return addConstraint(ConstraintAttributes.Trailing) }
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var width: Constraint { return addConstraint(ConstraintAttributes.Width) }
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var height: Constraint { return addConstraint(ConstraintAttributes.Height) }
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var centerX: Constraint { return addConstraint(ConstraintAttributes.CenterX) }
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var centerY: Constraint { return addConstraint(ConstraintAttributes.CenterY) }
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var baseline: Constraint { return addConstraint(ConstraintAttributes.Baseline) }
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var edges: Constraint { return addConstraint(ConstraintAttributes.Edges) }
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var size: Constraint { return addConstraint(ConstraintAttributes.Size) }
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var center: Constraint { return addConstraint(ConstraintAttributes.Center) }
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init(view: View) {
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self.view = view
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}
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internal weak var view: View?
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internal var constraints = Array<Constraint>()
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internal func addConstraint(attributes: ConstraintAttributes) -> Constraint {
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let item = ConstraintItem(view: self.view, attributes: attributes)
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let constraint = Constraint(fromItem: item)
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self.constraints.append(constraint)
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return constraint
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}
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internal class func makeConstraints(view: View, block: (make: ConstraintMaker) -> ()) {
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#if os(iOS)
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view.setTranslatesAutoresizingMaskIntoConstraints(false)
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#else
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view.translatesAutoresizingMaskIntoConstraints = false
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#endif
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let maker = ConstraintMaker(view: view)
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block(make: maker)
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var layoutConstraints: Array<LayoutConstraint> = []
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for constraint in maker.constraints {
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layoutConstraints += constraint.install()
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}
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LayoutConstraint.setLayoutConstraints(layoutConstraints, installedOnView: view)
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}
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internal class func remakeConstraints(view: View, block: (make: ConstraintMaker) -> ()) {
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#if os(iOS)
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view.setTranslatesAutoresizingMaskIntoConstraints(false)
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#else
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view.translatesAutoresizingMaskIntoConstraints = false
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#endif
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let maker = ConstraintMaker(view: view)
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block(make: maker)
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var layoutConstraints: Array<LayoutConstraint> = LayoutConstraint.layoutConstraintsInstalledOnView(view)
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for existingLayoutConstraint in layoutConstraints {
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existingLayoutConstraint.constraint?.uninstall()
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}
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layoutConstraints = []
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for constraint in maker.constraints {
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layoutConstraints += constraint.install()
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}
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LayoutConstraint.setLayoutConstraints(layoutConstraints, installedOnView: view)
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}
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}
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