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81 lines
2.9 KiB
81 lines
2.9 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 Foundation
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extension HeroTransition {
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open func animate() {
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guard state == .starting else { return }
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state = .animating
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if let toView = toView {
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context.unhide(view: toView)
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}
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// auto hide all animated views
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for view in animatingFromViews {
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context.hide(view: view)
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}
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for view in animatingToViews {
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context.hide(view: view)
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}
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var totalDuration: TimeInterval = 0
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var animatorWantsInteractive = false
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if context.insertToViewFirst {
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for v in animatingToViews { _ = context.snapshotView(for: v) }
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for v in animatingFromViews { _ = context.snapshotView(for: v) }
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} else {
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for v in animatingFromViews { _ = context.snapshotView(for: v) }
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for v in animatingToViews { _ = context.snapshotView(for: v) }
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}
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// UIKit appears to set fromView setNeedLayout to be true.
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// We don't want fromView to layout after our animation starts.
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// Therefore we kick off the layout beforehand
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fromView?.layoutIfNeeded()
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for animator in animators {
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let duration = animator.animate(fromViews: animatingFromViews.filter({ animator.canAnimate(view: $0, appearing: false) }),
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toViews: animatingToViews.filter({ animator.canAnimate(view: $0, appearing: true) }))
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if duration == .infinity {
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animatorWantsInteractive = true
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} else {
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totalDuration = max(totalDuration, duration)
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}
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}
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self.totalDuration = totalDuration
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if let forceFinishing = forceFinishing {
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complete(finished: forceFinishing)
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} else if let startingProgress = startingProgress {
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update(startingProgress)
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} else if animatorWantsInteractive {
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update(0)
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} else {
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complete(after: totalDuration, finishing: true)
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}
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fullScreenSnapshot?.removeFromSuperview()
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}
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}
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