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Code Issues 19 Releases Wiki Activity

Handle safe areas for image preview

This commit is contained in:
Stefan Painhapp 2022-11-18 19:07:44 +09:00
parent e2e93bdaf0
commit 7ab62394de
2 changed files with 6 additions and 18 deletions
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16
Mastodon/Scene/MediaPreview/Image/MediaPreviewImageView.swift
View File

@ -112,23 +112,14 @@ extension MediaPreviewImageView {
// reset to normal
zoomScale = minimumZoomScale
let imageViewSize = AVMakeRect(aspectRatio: image.size, insideRect: container.bounds).size
let imageContentInset: UIEdgeInsets = {
if imageViewSize.width == container.bounds.width {
return UIEdgeInsets(top: 0.5 * (container.bounds.height - imageViewSize.height), left: 0, bottom: 0, right: 0)
} else {
return UIEdgeInsets(top: 0, left: 0.5 * (container.bounds.width - imageViewSize.width), bottom: 0, right: 0)
}
}()
let imageViewSize = AVMakeRect(aspectRatio: image.size, insideRect: container.bounds.inset(by: container.safeAreaInsets)).size
imageView.frame = CGRect(origin: .zero, size: imageViewSize)
if imageView.image == nil {
imageView.image = image
}
contentSize = imageViewSize
contentInset = imageContentInset
centerScrollViewContents()
contentOffset = CGPoint(x: -contentInset.left, y: -contentInset.top)
os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s: setup image for container %s", ((#file as NSString).lastPathComponent), #line, #function, container.frame.debugDescription)
}
@ -192,10 +183,7 @@ extension MediaPreviewImageView {
frame.size = realImageSize
imageView.frame = frame
let screenSize = self.frame.size
let offsetX = screenSize.width > realImageSize.width ? (screenSize.width - realImageSize.width) / 2 : 0
let offsetY = screenSize.height > realImageSize.height ? (screenSize.height - realImageSize.height) / 2 : 0
contentInset = UIEdgeInsets(top: offsetY, left: offsetX, bottom: offsetY, right: offsetX)
contentInset = self.safeAreaInsets
// The scroll view has zoomed, so you need to re-center the contents
let scrollViewSize = scrollViewVisibleSize

8
Mastodon/Scene/MediaPreview/Image/MediaPreviewImageViewController.swift
View File

@ -46,10 +46,10 @@ extension MediaPreviewImageViewController {
previewImageView.translatesAutoresizingMaskIntoConstraints = false
view.addSubview(previewImageView)
NSLayoutConstraint.activate([
previewImageView.frameLayoutGuide.topAnchor.constraint(equalTo: view.safeAreaLayoutGuide.topAnchor),
previewImageView.frameLayoutGuide.leadingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.leadingAnchor),
previewImageView.frameLayoutGuide.trailingAnchor.constraint(equalTo: view.safeAreaLayoutGuide.trailingAnchor),
previewImageView.frameLayoutGuide.bottomAnchor.constraint(equalTo: view.safeAreaLayoutGuide.bottomAnchor),
previewImageView.frameLayoutGuide.topAnchor.constraint(equalTo: view.topAnchor),
previewImageView.frameLayoutGuide.leadingAnchor.constraint(equalTo: view.leadingAnchor),
previewImageView.frameLayoutGuide.trailingAnchor.constraint(equalTo: view.trailingAnchor),
previewImageView.frameLayoutGuide.bottomAnchor.constraint(equalTo: view.bottomAnchor),
])
tapGestureRecognizer.addTarget(self, action: #selector(MediaPreviewImageViewController.tapGestureRecognizerHandler(_:)))