added extension methods for anchoring
Signed-off-by: Matt Bruce <matt.bruce@verizon.com>
This commit is contained in:
Matt Bruce
parent
d7cad33727
commit
ce340fa34e
@ -10,56 +10,203 @@ import UIKit
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import VDSFormControlsTokens
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extension UIView {
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public func pin(_ view: UIView, with edges: UIEdgeInsets = UIEdgeInsets.zero) {
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leadingAnchor.constraint(equalTo: view.leadingAnchor, constant: edges.left).isActive = true
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trailingAnchor.constraint(equalTo: view.trailingAnchor, constant: -edges.right).isActive = true
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topAnchor.constraint(equalTo: view.topAnchor, constant: edges.top).isActive = true
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bottomAnchor.constraint(equalTo: view.bottomAnchor, constant: -edges.bottom).isActive = true
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public enum ConstraintIdentifier: CustomStringConvertible {
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case leading, trailing, top, bottom, height, width
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case custom(String)
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public var description: String {
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switch self {
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case .leading: return "leading"
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case .trailing: return "trailing"
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case .top: return "top"
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case .bottom: return "bottom"
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case .height: return "height"
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case .width: return "width"
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case .custom(let identifier): return identifier
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}
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}
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}
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public enum ConstraintType {
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case equal, lessThanOrEqual, greaterThanOrEqual
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}
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public var _topConstraint: NSLayoutConstraint? { constraint(with: .top)}
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public var _leadingConstraint: NSLayoutConstraint? { constraint(with: .leading)}
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public var _trailingConstraint: NSLayoutConstraint? { constraint(with: .trailing)}
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public var _bottomConstraint: NSLayoutConstraint? { constraint(with: .bottom)}
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public var _widthConstraint: NSLayoutConstraint? { constraint(with: .width)}
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public var _heightConstraint: NSLayoutConstraint? { constraint(with: .height)}
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public func constraint(with identifier: ConstraintIdentifier) -> NSLayoutConstraint? {
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return constraint(with: identifier.description)
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}
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public func constraint(with identifier: String) -> NSLayoutConstraint? {
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return constraints.first { $0.identifier == identifier }
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}
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public func removeConstraint(edges: [UIRectEdge]) {
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let topConstraint: NSLayoutConstraint? = constraint(with: .top)
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let leadingConstraint: NSLayoutConstraint? = constraint(with: .leading)
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let trailingConstraint: NSLayoutConstraint? = constraint(with: .trailing)
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let bottomConstraint: NSLayoutConstraint? = constraint(with: .bottom)
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edges.forEach { edge in
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switch edge {
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case .all:
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if let leadingConstraint {
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removeConstraint(leadingConstraint)
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}
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if let trailingConstraint {
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removeConstraint(trailingConstraint)
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}
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if let topConstraint {
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removeConstraint(topConstraint)
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}
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if let bottomConstraint {
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removeConstraint(bottomConstraint)
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}
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case .left:
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if let leadingConstraint {
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removeConstraint(leadingConstraint)
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}
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case .right:
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if let trailingConstraint {
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removeConstraint(trailingConstraint)
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}
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case .top:
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if let topConstraint {
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removeConstraint(topConstraint)
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}
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case .bottom:
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if let bottomConstraint {
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removeConstraint(bottomConstraint)
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}
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default:
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break
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}
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}
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}
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}
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//--------------------------------------------------
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// MARK: - Pinning
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//--------------------------------------------------
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extension UIView {
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public func pin(_ view: UIView, with edges: UIEdgeInsets = UIEdgeInsets.zero) {
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leadingAnchor.constraint(equalTo: view.leadingAnchor, constant: edges.left, identifier: ConstraintIdentifier.leading.description).isActive = true
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trailingAnchor.constraint(equalTo: view.trailingAnchor, constant: -edges.right, identifier: ConstraintIdentifier.trailing.description).isActive = true
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topAnchor.constraint(equalTo: view.topAnchor, constant: edges.top, identifier: ConstraintIdentifier.top.description).isActive = true
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bottomAnchor.constraint(equalTo: view.bottomAnchor, constant: -edges.bottom, identifier: ConstraintIdentifier.bottom.description).isActive = true
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}
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public func pinToSuperView(_ edges: UIEdgeInsets = UIEdgeInsets.zero) {
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if let superview {
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pin(superview, with: edges)
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}
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}
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}
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//--------------------------------------------------
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// MARK: - HeightAnchor
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//--------------------------------------------------
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extension UIView {
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@discardableResult
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public func height(_ constant: CGFloat, type: ConstraintType = .equal) -> Self {
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switch type {
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case .equal:
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height(constant)
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case .lessThanOrEqual:
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heightLessThanEqualTo(constant)
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case .greaterThanOrEqual:
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heightGreaterThanEqualTo(constant)
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}
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return self
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}
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@discardableResult
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public func height(_ constant: CGFloat) -> Self {
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heightAnchor.constraint(equalToConstant: constant).isActive = true
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heightAnchor.constraint(equalToConstant: constant, identifier: ConstraintIdentifier.height.description).isActive = true
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return self
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}
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@discardableResult
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public func heightGreaterThanEqual(_ constant: CGFloat) -> Self {
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heightAnchor.constraint(greaterThanOrEqualToConstant: constant).isActive = true
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return self
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}
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@discardableResult
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public func heightLessThanEqual(_ constant: CGFloat) -> Self {
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heightAnchor.constraint(lessThanOrEqualToConstant: constant).isActive = true
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return self
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}
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@discardableResult
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public func width(_ constant: CGFloat) -> Self {
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widthAnchor.constraint(equalToConstant: constant).isActive = true
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return self
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}
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@discardableResult
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public func widthGreaterThanEqual(_ constant: CGFloat) -> Self {
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widthAnchor.constraint(greaterThanOrEqualToConstant: constant).isActive = true
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public func heightGreaterThanEqualTo(_ constant: CGFloat) -> Self {
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heightAnchor.constraint(greaterThanOrEqualToConstant: constant, identifier: ConstraintIdentifier.height.description).isActive = true
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return self
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}
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@discardableResult
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public func widthLessThanEqual(_ constant: CGFloat) -> Self {
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widthAnchor.constraint(lessThanOrEqualToConstant: constant).isActive = true
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public func heightLessThanEqualTo(_ constant: CGFloat) -> Self {
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heightAnchor.constraint(lessThanOrEqualToConstant: constant, identifier: ConstraintIdentifier.height.description).isActive = true
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return self
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}
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}
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//--------------------------------------------------
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// MARK: - WidthAnchor
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//--------------------------------------------------
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extension UIView {
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@discardableResult
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public func width(_ constant: CGFloat, type: ConstraintType = .equal) -> Self {
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switch type {
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case .equal:
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width(constant)
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case .lessThanOrEqual:
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widthLessThanEqualTo(constant)
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case .greaterThanOrEqual:
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widthGreaterThanEqualTo(constant)
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}
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return self
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}
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@discardableResult
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public func width(_ constant: CGFloat) -> Self {
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widthAnchor.constraint(equalToConstant: constant, identifier: ConstraintIdentifier.width.description).isActive = true
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return self
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}
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@discardableResult
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public func widthGreaterThanEqualTo(_ constant: CGFloat) -> Self {
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widthAnchor.constraint(greaterThanOrEqualToConstant: constant, identifier: ConstraintIdentifier.width.description).isActive = true
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return self
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}
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@discardableResult
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public func widthLessThanEqualTo(_ constant: CGFloat) -> Self {
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widthAnchor.constraint(lessThanOrEqualToConstant: constant, identifier: ConstraintIdentifier.width.description).isActive = true
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return self
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}
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}
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//--------------------------------------------------
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// MARK: - TopAnchor
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//--------------------------------------------------
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extension UIView {
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@discardableResult
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public func pinTop(_ anchor: NSLayoutYAxisAnchor? = nil, _ constant: CGFloat = 0.0, _ type: ConstraintType = .equal) -> Self {
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switch type {
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case .equal:
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pinTop(anchor, constant)
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case .lessThanOrEqual:
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pinTopLessThanOrEqualTo(anchor, constant)
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case .greaterThanOrEqual:
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pinTopGreaterThanOrEqualTo(anchor, constant)
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}
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return self
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}
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@discardableResult
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public func pinTop(_ constant: CGFloat = 0.0) -> Self {
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return pinTop(nil, constant)
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@ -69,11 +216,49 @@ extension UIView {
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public func pinTop(_ anchor: NSLayoutYAxisAnchor? = nil, _ constant: CGFloat = 0.0) -> Self {
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let found: NSLayoutYAxisAnchor? = anchor ?? superview?.topAnchor
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if let found {
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topAnchor.constraint(equalTo: found, constant: constant).isActive = true
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topAnchor.constraint(equalTo: found, constant: constant, identifier: ConstraintIdentifier.top.description).isActive = true
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}
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return self
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}
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@discardableResult
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public func pinTopLessThanOrEqualTo(_ anchor: NSLayoutYAxisAnchor? = nil, _ constant: CGFloat = 0.0) -> Self {
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let found: NSLayoutYAxisAnchor? = anchor ?? superview?.topAnchor
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if let found {
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topAnchor.constraint(lessThanOrEqualTo: found, constant: constant, identifier: ConstraintIdentifier.top.description).isActive = true
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}
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return self
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}
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@discardableResult
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public func pinTopGreaterThanOrEqualTo(_ anchor: NSLayoutYAxisAnchor? = nil, _ constant: CGFloat = 0.0) -> Self {
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let found: NSLayoutYAxisAnchor? = anchor ?? superview?.topAnchor
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if let found {
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topAnchor.constraint(greaterThanOrEqualTo: found, constant: constant, identifier: ConstraintIdentifier.top.description).isActive = true
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}
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return self
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}
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}
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//--------------------------------------------------
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// MARK: - BottomAnchor
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//--------------------------------------------------
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extension UIView {
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@discardableResult
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public func pinBottom(_ anchor: NSLayoutYAxisAnchor? = nil, _ constant: CGFloat = 0.0, _ type: ConstraintType = .equal) -> Self {
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switch type {
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case .equal:
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pinBottom(anchor, constant)
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case .lessThanOrEqual:
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pinBottomLessThanOrEqualTo(anchor, constant)
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case .greaterThanOrEqual:
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pinBottomGreaterThanOrEqualTo(anchor, constant)
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}
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return self
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}
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@discardableResult
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public func pinBottom(_ constant: CGFloat = 0.0) -> Self {
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return pinBottom(nil, constant)
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@ -83,7 +268,45 @@ extension UIView {
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public func pinBottom(_ anchor: NSLayoutYAxisAnchor? = nil, _ constant: CGFloat = 0.0) -> Self {
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let found: NSLayoutYAxisAnchor? = anchor ?? superview?.bottomAnchor
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if let found {
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bottomAnchor.constraint(equalTo: found, constant: -constant).isActive = true
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bottomAnchor.constraint(equalTo: found, constant: -constant, identifier: ConstraintIdentifier.bottom.description).isActive = true
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}
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return self
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}
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@discardableResult
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public func pinBottomLessThanOrEqualTo(_ anchor: NSLayoutYAxisAnchor? = nil, _ constant: CGFloat = 0.0) -> Self {
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let found: NSLayoutYAxisAnchor? = anchor ?? superview?.bottomAnchor
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if let found {
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bottomAnchor.constraint(lessThanOrEqualTo: found, constant: -constant, identifier: ConstraintIdentifier.bottom.description).isActive = true
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}
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return self
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}
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@discardableResult
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public func pinBottomGreaterThanOrEqualTo(_ anchor: NSLayoutYAxisAnchor? = nil, _ constant: CGFloat = 0.0) -> Self {
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let found: NSLayoutYAxisAnchor? = anchor ?? superview?.bottomAnchor
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if let found {
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bottomAnchor.constraint(greaterThanOrEqualTo: found, constant: -constant, identifier: ConstraintIdentifier.bottom.description).isActive = true
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}
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return self
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}
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}
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//--------------------------------------------------
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// MARK: - LeadingAnchor
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//--------------------------------------------------
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extension UIView {
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@discardableResult
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public func pinLeading(_ anchor: NSLayoutXAxisAnchor? = nil, _ constant: CGFloat = 0.0, _ type: ConstraintType = .equal) -> Self {
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switch type {
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case .equal:
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pinLeading(anchor, constant)
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case .lessThanOrEqual:
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pinLeadingLessThanOrEqualTo(anchor, constant)
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case .greaterThanOrEqual:
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pinLeadingGreaterThanOrEqualTo(anchor, constant)
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}
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return self
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}
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@ -92,16 +315,55 @@ extension UIView {
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public func pinLeading(_ constant: CGFloat = 0.0) -> Self {
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return pinLeading(nil, constant)
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}
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@discardableResult
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public func pinLeading(_ anchor: NSLayoutXAxisAnchor? = nil, _ constant: CGFloat = 0.0) -> Self {
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let found: NSLayoutXAxisAnchor? = anchor ?? superview?.leadingAnchor
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if let found {
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leadingAnchor.constraint(equalTo: found, constant: constant).isActive = true
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leadingAnchor.constraint(equalTo: found, constant: constant, identifier: ConstraintIdentifier.leading.description).isActive = true
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}
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return self
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}
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@discardableResult
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public func pinLeadingLessThanOrEqualTo(_ anchor: NSLayoutXAxisAnchor? = nil, _ constant: CGFloat = 0.0) -> Self {
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let found: NSLayoutXAxisAnchor? = anchor ?? superview?.leadingAnchor
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if let found {
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leadingAnchor.constraint(lessThanOrEqualTo: found, constant: constant, identifier: ConstraintIdentifier.leading.description).isActive = true
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}
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return self
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}
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@discardableResult
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public func pinLeadingGreaterThanOrEqualTo(_ anchor: NSLayoutXAxisAnchor? = nil, _ constant: CGFloat = 0.0) -> Self {
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let found: NSLayoutXAxisAnchor? = anchor ?? superview?.leadingAnchor
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if let found {
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leadingAnchor.constraint(greaterThanOrEqualTo: found, constant: constant, identifier: ConstraintIdentifier.leading.description).isActive = true
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}
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return self
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}
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}
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//--------------------------------------------------
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// MARK: - TrailingAnchor
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//--------------------------------------------------
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extension UIView {
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@discardableResult
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public func pinTrailing(_ anchor: NSLayoutXAxisAnchor? = nil, _ constant: CGFloat = 0.0, _ type: ConstraintType = .equal) -> Self {
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switch type {
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case .equal:
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pinTrailing(anchor, constant)
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case .lessThanOrEqual:
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pinTrailingLessThanOrEqualTo(anchor, constant)
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case .greaterThanOrEqual:
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pinLeadingGreaterThanOrEqualTo(anchor, constant)
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}
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return self
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}
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@discardableResult
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public func pinTrailing(_ constant: CGFloat = 0.0) -> Self {
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return pinTrailing(nil, constant)
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@ -111,13 +373,33 @@ extension UIView {
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public func pinTrailing(_ anchor: NSLayoutXAxisAnchor? = nil, _ constant: CGFloat = 0.0) -> Self {
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let found: NSLayoutXAxisAnchor? = anchor ?? superview?.trailingAnchor
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if let found {
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trailingAnchor.constraint(equalTo: found, constant: -constant).isActive = true
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trailingAnchor.constraint(equalTo: found, constant: -constant, identifier: ConstraintIdentifier.trailing.description).isActive = true
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}
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return self
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}
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@discardableResult
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public func pinTrailingLessThanOrEqualTo(_ anchor: NSLayoutXAxisAnchor? = nil, _ constant: CGFloat = 0.0) -> Self {
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let found: NSLayoutXAxisAnchor? = anchor ?? superview?.trailingAnchor
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if let found {
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trailingAnchor.constraint(lessThanOrEqualTo: found, constant: -constant, identifier: ConstraintIdentifier.trailing.description).isActive = true
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}
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return self
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}
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@discardableResult
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public func pinTrailingGreaterThanOrEqualTo(_ anchor: NSLayoutXAxisAnchor? = nil, _ constant: CGFloat = 0.0) -> Self {
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let found: NSLayoutXAxisAnchor? = anchor ?? superview?.trailingAnchor
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if let found {
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trailingAnchor.constraint(greaterThanOrEqualTo: found, constant: -constant, identifier: ConstraintIdentifier.trailing.description).isActive = true
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}
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return self
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}
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}
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//--------------------------------------------------
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// MARK: - Debug Borders
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//--------------------------------------------------
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extension UIView {
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internal func removeDebugBorder() {
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@ -174,6 +456,9 @@ extension UIView {
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}
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}
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//--------------------------------------------------
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// MARK: - CALayer
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//--------------------------------------------------
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extension CALayer {
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func remove(layerName: String) {
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guard let sublayers = sublayers else {
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@ -188,7 +473,9 @@ extension CALayer {
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}
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}
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//--------------------------------------------------
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// MARK: - Borders
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//--------------------------------------------------
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extension UIView {
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public func addBorder(side: UIRectEdge, width: CGFloat, color: UIColor, offset: CGFloat = 0) {
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@ -239,3 +526,126 @@ extension UIView {
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}
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}
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}
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//--------------------------------------------------
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// MARK: - NSLayoutAnchor
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//--------------------------------------------------
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extension NSLayoutAnchor {
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// These methods return an inactive constraint of the form thisAnchor = otherAnchor.
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@discardableResult
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@objc public func constraint(equalTo anchor: NSLayoutAnchor, identifier: String) -> NSLayoutConstraint {
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let constraint = self.constraint(equalTo: anchor)
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constraint.identifier = identifier
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return constraint
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}
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@discardableResult
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@objc public func constraint(greaterThanOrEqualTo anchor: NSLayoutAnchor, identifier: String) -> NSLayoutConstraint {
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let constraint = self.constraint(greaterThanOrEqualTo: anchor)
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constraint.identifier = identifier
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return constraint
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}
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@discardableResult
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@objc public func constraint(lessThanOrEqualTo anchor: NSLayoutAnchor, identifier: String) -> NSLayoutConstraint {
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let constraint = self.constraint(lessThanOrEqualTo: anchor)
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constraint.identifier = identifier
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return constraint
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}
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@discardableResult
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@objc public func constraint(equalTo anchor: NSLayoutAnchor, constant: CGFloat, identifier: String) -> NSLayoutConstraint {
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let constraint = self.constraint(equalTo: anchor, constant: constant)
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constraint.identifier = identifier
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return constraint
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}
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@discardableResult
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@objc public func constraint(greaterThanOrEqualTo anchor: NSLayoutAnchor, constant: CGFloat, identifier: String) -> NSLayoutConstraint {
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let constraint = self.constraint(greaterThanOrEqualTo: anchor, constant: constant)
|
||||
constraint.identifier = identifier
|
||||
return constraint
|
||||
}
|
||||
|
||||
@discardableResult
|
||||
@objc public func constraint(lessThanOrEqualTo anchor: NSLayoutAnchor, constant: CGFloat, identifier: String) -> NSLayoutConstraint {
|
||||
let constraint = self.constraint(lessThanOrEqualTo: anchor, constant: constant)
|
||||
constraint.identifier = identifier
|
||||
return constraint
|
||||
}
|
||||
}
|
||||
|
||||
//--------------------------------------------------
|
||||
// MARK: - NSLayoutDimension
|
||||
//--------------------------------------------------
|
||||
extension NSLayoutDimension {
|
||||
// These methods return an inactive constraint of the form thisVariable = constant.
|
||||
@discardableResult
|
||||
@objc public func constraint(equalToConstant c: CGFloat, identifier: String) -> NSLayoutConstraint {
|
||||
let lc = constraint(equalToConstant: c)
|
||||
lc.identifier = identifier
|
||||
return lc
|
||||
}
|
||||
|
||||
@discardableResult
|
||||
@objc public func constraint(greaterThanOrEqualToConstant c: CGFloat, identifier: String) -> NSLayoutConstraint {
|
||||
let lc = constraint(greaterThanOrEqualToConstant: c)
|
||||
lc.identifier = identifier
|
||||
return lc
|
||||
}
|
||||
|
||||
@discardableResult
|
||||
@objc public func constraint(lessThanOrEqualToConstant c: CGFloat, identifier: String) -> NSLayoutConstraint {
|
||||
let lc = constraint(lessThanOrEqualToConstant: c)
|
||||
lc.identifier = identifier
|
||||
return lc
|
||||
}
|
||||
|
||||
|
||||
// These methods return an inactive constraint of the form thisAnchor = otherAnchor * multiplier.
|
||||
@discardableResult
|
||||
@objc public func constraint(equalTo anchor: NSLayoutDimension, multiplier m: CGFloat, identifier: String) -> NSLayoutConstraint {
|
||||
let lc = constraint(equalTo: anchor, multiplier: m)
|
||||
lc.identifier = identifier
|
||||
return lc
|
||||
}
|
||||
|
||||
@discardableResult
|
||||
@objc public func constraint(greaterThanOrEqualTo anchor: NSLayoutDimension, multiplier m: CGFloat, identifier: String) -> NSLayoutConstraint {
|
||||
let lc = constraint(greaterThanOrEqualTo: anchor ,multiplier: m)
|
||||
lc.identifier = identifier
|
||||
return lc
|
||||
}
|
||||
|
||||
@discardableResult
|
||||
@objc public func constraint(lessThanOrEqualTo anchor: NSLayoutDimension, multiplier m: CGFloat, identifier: String) -> NSLayoutConstraint {
|
||||
let lc = constraint(lessThanOrEqualTo: anchor, multiplier: m)
|
||||
lc.identifier = identifier
|
||||
return lc
|
||||
}
|
||||
|
||||
|
||||
// These methods return an inactive constraint of the form thisAnchor = otherAnchor * multiplier + constant.
|
||||
@discardableResult
|
||||
@objc public func constraint(equalTo anchor: NSLayoutDimension, multiplier m: CGFloat, constant c: CGFloat, identifier: String) -> NSLayoutConstraint {
|
||||
let lc = constraint(equalTo: anchor, multiplier: m, constant: c)
|
||||
lc.identifier = identifier
|
||||
return lc
|
||||
}
|
||||
|
||||
@discardableResult
|
||||
@objc public func constraint(greaterThanOrEqualTo anchor: NSLayoutDimension, multiplier m: CGFloat, constant c: CGFloat, identifier: String) -> NSLayoutConstraint {
|
||||
let lc = constraint(greaterThanOrEqualTo: anchor, multiplier: m, constant: c)
|
||||
lc.identifier = identifier
|
||||
return lc
|
||||
}
|
||||
|
||||
@discardableResult
|
||||
@objc public func constraint(lessThanOrEqualTo anchor: NSLayoutDimension, multiplier m: CGFloat, constant c: CGFloat, identifier: String) -> NSLayoutConstraint {
|
||||
let lc = constraint(lessThanOrEqualTo: anchor, multiplier: m, constant: c)
|
||||
lc.identifier = identifier
|
||||
return lc
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user