shadowfacts
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Tusker
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Code Issues 78 Pull Requests Releases Wiki Activity

Use visual effect views for sensitive media hide button so the button is 

visible regardless of the image color
This commit is contained in:
Shadowfacts 2019-11-17 12:28:21 -05:00
parent 42a0a8890c
commit 6ce96764f3
Signed by: shadowfacts
GPG Key ID: 94A5AB95422746E5
2 changed files with 39 additions and 24 deletions
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7
Tusker/Views/Attachments/AttachmentView.swift
View File

@ -105,14 +105,7 @@ class AttachmentView: UIImageView, GIFAnimatable {
}
@objc func imagePressed() {
// switch attachment.kind {
// case .image:
delegate?.showAttachmentsGallery(startingAt: index)
// case .video:
// delegate?.showVideo(attachment: attachment)
// default:
// fatalError()
// }
}
}

54
Tusker/Views/Attachments/AttachmentsContainerView.swift
View File

@ -19,17 +19,17 @@ class AttachmentsContainerView: UIView {
let attachmentViews: NSHashTable<AttachmentView> = .weakObjects()
var blurView: UIVisualEffectView?
var hideButton: UIButton?
var hideButtonView: UIVisualEffectView?
var contentHidden: Bool! {
didSet {
guard let blurView = blurView,
let hideButton = hideButton else { return }
let hideButtonContainerView = hideButtonView else { return }
blurView.alpha = contentHidden ? 0 : 1
hideButton.alpha = contentHidden ? 1 : 0
hideButtonContainerView.alpha = contentHidden ? 1 : 0
UIView.animate(withDuration: 0.2) {
blurView.alpha = self.contentHidden ? 1 : 0
hideButton.alpha = self.contentHidden ? 0 : 1
hideButtonContainerView.alpha = self.contentHidden ? 0 : 1
}
}
}
@ -231,21 +231,43 @@ class AttachmentsContainerView: UIView {
}
private func createHideButton() {
let hideButton = UIButton()
hideButton.translatesAutoresizingMaskIntoConstraints = false
hideButton.alpha = 0
hideButton.layer.cornerRadius = 2
hideButton.layer.masksToBounds = true
hideButton.setImage(UIImage(systemName: "eye.slash.fill"), for: .normal)
hideButton.addTarget(self, action: #selector(hideButtonTapped), for: .touchUpInside)
let blurEffect = UIBlurEffect(style: .regular)
let hideButtonBlurView = UIVisualEffectView(effect: blurEffect)
hideButtonBlurView.translatesAutoresizingMaskIntoConstraints = false
hideButtonBlurView.alpha = 0
hideButtonBlurView.isUserInteractionEnabled = true
hideButtonBlurView.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(hideButtonTapped)))
addSubview(hideButtonBlurView)
self.hideButtonView = hideButtonBlurView
let maskLayer = CALayer()
let image = UIImage(systemName: "eye.slash.fill")!
maskLayer.contents = image.cgImage!
maskLayer.frame = CGRect(origin: .zero, size: image.size)
hideButtonBlurView.layer.mask = maskLayer
let hideButtonVibrancyView = UIVisualEffectView(effect: UIVibrancyEffect(blurEffect: blurEffect, style: .label))
hideButtonVibrancyView.translatesAutoresizingMaskIntoConstraints = false
hideButtonBlurView.contentView.addSubview(hideButtonVibrancyView)
let fillView = UIView()
fillView.translatesAutoresizingMaskIntoConstraints = false
fillView.backgroundColor = UIColor(displayP3Red: 0, green: 0, blue: 0, alpha: 0.5)
hideButtonVibrancyView.contentView.addSubview(fillView)
addSubview(hideButton)
NSLayoutConstraint.activate([
hideButton.topAnchor.constraint(equalTo: topAnchor, constant: 8),
hideButton.leadingAnchor.constraint(equalTo: leadingAnchor, constant: 8)
hideButtonBlurView.topAnchor.constraint(equalTo: topAnchor, constant: 8),
hideButtonBlurView.leadingAnchor.constraint(equalTo: leadingAnchor, constant: 8),
hideButtonBlurView.widthAnchor.constraint(equalToConstant: image.size.width),
hideButtonBlurView.heightAnchor.constraint(equalToConstant: image.size.height),
hideButtonVibrancyView.leadingAnchor.constraint(equalTo: hideButtonBlurView.contentView.leadingAnchor),
hideButtonVibrancyView.trailingAnchor.constraint(equalTo: hideButtonBlurView.contentView.trailingAnchor),
hideButtonVibrancyView.topAnchor.constraint(equalTo: hideButtonBlurView.contentView.topAnchor),
hideButtonVibrancyView.bottomAnchor.constraint(equalTo: hideButtonBlurView.contentView.bottomAnchor),
fillView.leadingAnchor.constraint(equalTo: hideButtonBlurView.contentView.leadingAnchor),
fillView.trailingAnchor.constraint(equalTo: hideButtonBlurView.contentView.trailingAnchor),
fillView.topAnchor.constraint(equalTo: hideButtonBlurView.contentView.topAnchor),
fillView.bottomAnchor.constraint(equalTo: hideButtonBlurView.contentView.bottomAnchor),
])
self.hideButton = hideButton
}
private func fillView(_ view: UIView, in parentView: UIView? = nil) {