1a8c9fb5c6
Creating a UIImageView outside a view hierarchy now crashes on iOS 18. We can avoid this offscreen rendering technique by removing UIImage.asTintedImage(), configuring the tint colour and template rendering on the UIImage directly, and rendering with UIGraphicsImageRenderer instead of lower-level Core Graphics APIs.
103 lines
3.2 KiB
Swift
103 lines
3.2 KiB
Swift
//
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// Copyright 2023 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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//
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import SignalServiceKit
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public extension UIImageView {
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func setImage(imageName: String) {
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guard let image = UIImage(named: imageName) else {
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owsFailDebug("Couldn't load image: \(imageName)")
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return
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}
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self.image = image
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}
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func setTemplateImage(_ templateImage: UIImage?, tintColor: UIColor) {
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guard let templateImage else {
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owsFailDebug("Missing image")
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return
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}
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self.image = templateImage.withRenderingMode(.alwaysTemplate)
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self.tintColor = tintColor
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}
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func setTemplateImageName(_ imageName: String, tintColor: UIColor) {
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guard let image = UIImage(named: imageName) else {
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owsFailDebug("Couldn't load image: \(imageName)")
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return
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}
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setTemplateImage(image, tintColor: tintColor)
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}
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class func withTemplateImage(_ templateImage: UIImage?, tintColor: UIColor) -> UIImageView {
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let imageView = UIImageView()
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imageView.setTemplateImage(templateImage, tintColor: tintColor)
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return imageView
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}
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class func withTemplateImageName(_ imageName: String, tintColor: UIColor) -> UIImageView {
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let imageView = UIImageView()
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imageView.setTemplateImageName(imageName, tintColor: tintColor)
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return imageView
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}
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/// Creates an image view with the given theme icon, tinted with the given
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/// color, and constrained to the given size if present.
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/// - Parameters:
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/// - icon: The ``ThemeIcon`` to display.
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/// - tintColor: The color to tint the icon
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/// - size: The size to constrain the image to.
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/// When `nil`, no constraints are added.
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/// - Returns: A `UIImageView` of the icon.
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class func withTemplateIcon(
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_ icon: ThemeIcon,
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tintColor: UIColor,
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constrainedTo size: CGSize? = nil
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) -> UIImageView {
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let imageView = UIImageView()
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imageView.setTemplateImage(Theme.iconImage(icon), tintColor: tintColor)
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if let size {
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imageView.autoSetDimensions(to: size)
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}
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return imageView
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}
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}
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// MARK: -
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extension UIImage {
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/// Redraw the image into a new image, with an added background color, and inset the
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/// original image by the provided insets.
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public func withBackgroundColor(_ color: UIColor, insets: UIEdgeInsets = .zero) -> UIImage? {
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let bounds = CGRect(origin: .zero, size: size)
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return UIGraphicsImageRenderer(bounds: bounds).image { context in
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color.setFill()
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context.fill(bounds)
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draw(in: bounds.inset(by: insets))
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}
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}
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}
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// MARK: -
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public extension UIView {
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func renderAsImage() -> UIImage {
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renderAsImage(opaque: false, scale: UIScreen.main.scale)
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}
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func renderAsImage(opaque: Bool, scale: CGFloat) -> UIImage {
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let format = UIGraphicsImageRendererFormat()
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format.scale = scale
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format.opaque = opaque
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let renderer = UIGraphicsImageRenderer(bounds: self.bounds,
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format: format)
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return renderer.image { (context) in
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self.layer.render(in: context.cgContext)
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}
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}
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}
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