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196 lines
7.5 KiB
196 lines
7.5 KiB
// The MIT License (MIT)
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//
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// Copyright (c) 2016 Luke Zhao <me@lkzhao.com>
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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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import UIKit
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class SnapshotWrapperView: UIView {
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let contentView: UIView
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init(contentView: UIView) {
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self.contentView = contentView
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super.init(frame: contentView.frame)
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addSubview(contentView)
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}
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required init?(coder aDecoder: NSCoder) {
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fatalError("init(coder:) has not been implemented")
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}
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override func layoutSubviews() {
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super.layoutSubviews()
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contentView.bounds.size = bounds.size
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contentView.center = bounds.center
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}
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}
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extension UIView: HeroCompatible { }
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public extension HeroExtension where Base: UIView {
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/**
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**ID** is the identifier for the view. When doing a transition between two view controllers,
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Hero will search through all the subviews for both view controllers and matches views with the same **heroID**.
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Whenever a pair is discovered,
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Hero will automatically transit the views from source state to the destination state.
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*/
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var id: String? {
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get { return objc_getAssociatedObject(base, &type(of: base).AssociatedKeys.heroID) as? String }
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set { objc_setAssociatedObject(base, &type(of: base).AssociatedKeys.heroID, newValue, .OBJC_ASSOCIATION_RETAIN_NONATOMIC) }
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}
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/**
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**isEnabled** allows to specify whether a view and its subviews should be consider for animations.
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If true, Hero will search through all the subviews for heroIds and modifiers. Defaults to true
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*/
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var isEnabled: Bool {
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get { return objc_getAssociatedObject(base, &type(of: base).AssociatedKeys.heroEnabled) as? Bool ?? true }
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set { objc_setAssociatedObject(base, &type(of: base).AssociatedKeys.heroEnabled, newValue, .OBJC_ASSOCIATION_RETAIN_NONATOMIC) }
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}
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/**
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**isEnabledForSubviews** allows to specify whether a view's subviews should be consider for animations.
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If true, Hero will search through all the subviews for heroIds and modifiers. Defaults to true
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*/
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var isEnabledForSubviews: Bool {
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get { return objc_getAssociatedObject(base, &type(of: base).AssociatedKeys.heroEnabledForSubviews) as? Bool ?? true }
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set { objc_setAssociatedObject(base, &type(of: base).AssociatedKeys.heroEnabledForSubviews, newValue, .OBJC_ASSOCIATION_RETAIN_NONATOMIC) }
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}
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/**
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Use **modifiers** to specify animations alongside the main transition. Checkout `HeroModifier.swift` for available modifiers.
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*/
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var modifiers: [HeroModifier]? {
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get { return objc_getAssociatedObject(base, &type(of: base).AssociatedKeys.heroModifiers) as? [HeroModifier] }
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set { objc_setAssociatedObject(base, &type(of: base).AssociatedKeys.heroModifiers, newValue, .OBJC_ASSOCIATION_RETAIN_NONATOMIC) }
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}
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/**
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**modifierString** provides another way to set **modifiers**. It can be assigned through storyboard.
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*/
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var modifierString: String? {
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get { fatalError("Reverse lookup is not supported") }
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set { modifiers = newValue?.parse() }
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}
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/// Used for .overFullScreen presentation
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internal var storedAlpha: CGFloat? {
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get {
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if let doubleValue = (objc_getAssociatedObject(base, &type(of: base).AssociatedKeys.heroStoredAlpha) as? NSNumber)?.doubleValue {
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return CGFloat(doubleValue)
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}
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return nil
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}
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set {
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if let newValue = newValue {
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objc_setAssociatedObject(base, &type(of: base).AssociatedKeys.heroStoredAlpha, NSNumber(value: newValue.native), .OBJC_ASSOCIATION_RETAIN_NONATOMIC)
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} else {
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objc_setAssociatedObject(base, &type(of: base).AssociatedKeys.heroStoredAlpha, nil, .OBJC_ASSOCIATION_RETAIN_NONATOMIC)
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}
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}
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}
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}
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public extension UIView {
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fileprivate struct AssociatedKeys {
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static var heroID = "heroID"
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static var heroModifiers = "heroModifers"
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static var heroStoredAlpha = "heroStoredAlpha"
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static var heroEnabled = "heroEnabled"
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static var heroEnabledForSubviews = "heroEnabledForSubviews"
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}
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// TODO: can be moved to internal later (will still be accessible via IB)
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@available(*, renamed: "hero.id")
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@IBInspectable var heroID: String? {
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get { return hero.id }
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set { hero.id = newValue }
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}
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// TODO: can be moved to internal later (will still be accessible via IB)
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@available(*, renamed: "hero.isEnabled")
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@IBInspectable var isHeroEnabled: Bool {
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get { return hero.isEnabled }
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set { hero.isEnabled = newValue }
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}
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// TODO: can be moved to internal later (will still be accessible via IB)
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@available(*, renamed: "hero.isEnabledForSubviews")
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@IBInspectable var isHeroEnabledForSubviews: Bool {
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get { return hero.isEnabledForSubviews }
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set { hero.isEnabledForSubviews = newValue }
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}
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@available(*, renamed: "hero.modifiers")
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var heroModifiers: [HeroModifier]? {
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get { return hero.modifiers }
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set { hero.modifiers = newValue }
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}
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// TODO: can be moved to internal later (will still be accessible via IB)
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@available(*, renamed: "hero.modifierString")
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@IBInspectable var heroModifierString: String? {
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get { fatalError("Reverse lookup is not supported") }
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set { hero.modifiers = newValue?.parse() }
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}
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internal func slowSnapshotView() -> UIView {
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UIGraphicsBeginImageContextWithOptions(bounds.size, isOpaque, 0)
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guard let currentContext = UIGraphicsGetCurrentContext() else {
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UIGraphicsEndImageContext()
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return UIView()
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}
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layer.render(in: currentContext)
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let image = UIGraphicsGetImageFromCurrentImageContext()
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UIGraphicsEndImageContext()
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let imageView = UIImageView(image: image)
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imageView.frame = bounds
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return SnapshotWrapperView(contentView: imageView)
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}
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internal func snapshotView() -> UIView? {
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let snapshot = snapshotView(afterScreenUpdates: true)
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if #available(iOS 11.0, *), let oldSnapshot = snapshot {
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// in iOS 11, the snapshot taken by snapshotView(afterScreenUpdates) won't contain a container view
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return SnapshotWrapperView(contentView: oldSnapshot)
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} else {
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return snapshot
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}
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}
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internal var flattenedViewHierarchy: [UIView] {
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guard hero.isEnabled else { return [] }
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if #available(iOS 9.0, *), isHidden && (superview is UICollectionView || superview is UIStackView || self is UITableViewCell) {
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return []
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} else if isHidden && (superview is UICollectionView || self is UITableViewCell) {
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return []
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} else if hero.isEnabledForSubviews {
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return [self] + subviews.flatMap { $0.flattenedViewHierarchy }
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} else {
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return [self]
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}
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}
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@available(*, renamed: "hero.storedAplha")
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internal var heroStoredAlpha: CGFloat? {
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get { return hero.storedAlpha }
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set { hero.storedAlpha = newValue }
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}
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}
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