Skip to content

Instantly share code, notes, and snippets.

@martinhoeller
Last active August 7, 2024 12:29
Show Gist options
  • Save martinhoeller/7a1d41e3744f4191d3b3f38868be5190 to your computer and use it in GitHub Desktop.
Save martinhoeller/7a1d41e3744f4191d3b3f38868be5190 to your computer and use it in GitHub Desktop.
An NSStackView extension for animated hiding/showing of views
//
// NSStackView+Animations.swift
//
// Created by Martin Höller on 18.06.16.
// Copyright © 2016 blue banana software. All rights reserved.
//
// Based on http://prod.lists.apple.com/archives/cocoa-dev/2015/Jan/msg00314.html
import Cocoa
extension NSStackView {
func hideViews(views: [NSView], animated: Bool) {
views.forEach { view in
view.hidden = true
}
if animated {
NSAnimationContext.runAnimationGroup({ context in
context.duration = 0.3
context.allowsImplicitAnimation = true
self.window?.layoutIfNeeded()
}, completionHandler: nil)
}
}
func showViews(views: [NSView], animated: Bool) {
views.forEach { view in
// unhide the view so the stack view knows how to layout…
view.hidden = false
if animated {
view.wantsLayer = true
// …but set opacity to 0 so the view is not visible during the animation
view.layer!.opacity = 0.0
}
}
if animated {
NSAnimationContext.runAnimationGroup({ context in
context.duration = 0.3
context.allowsImplicitAnimation = true
self.window?.layoutIfNeeded()
}, completionHandler: {
// reset opacity to show the views after the animation finished
views.forEach { view in
view.layer!.opacity = 1.0
}
})
}
}
}
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment