d7fcda345d
- Rename source module from RDReaderView to RDEpubReaderView - Move all source files from Sources/RDReaderView/ to Sources/RDEpubReaderView/ - Update podspec: RDReaderView.podspec -> RDEpubReaderView.podspec - Update Podfile, demo project, and CocoaPods config for new pod name - Delete old RDReaderView pod support files from ReadViewDemo/Pods - Add new RDEpubReaderView pod support files - Update documentation (API ref, architecture, UML, conventions, etc.) - Add FixedLayoutRotationTests - Update .gitignore: exclude .DS_Store, manual unpack backups, _ssoft-output
79 lines
2.7 KiB
Swift
79 lines
2.7 KiB
Swift
import UIKit
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final class RDEPUBSelectionLoupeView: UIView {
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private let imageView = UIImageView()
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private let magnification: CGFloat = 1.45
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private let captureSize = CGSize(width: 84, height: 84)
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override init(frame: CGRect) {
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super.init(frame: CGRect(origin: .zero, size: CGSize(width: 96, height: 96)))
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isUserInteractionEnabled = false
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backgroundColor = .clear
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layer.shadowColor = UIColor.black.cgColor
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layer.shadowOpacity = 0.18
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layer.shadowRadius = 10
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layer.shadowOffset = CGSize(width: 0, height: 5)
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imageView.frame = bounds
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imageView.autoresizingMask = [.flexibleWidth, .flexibleHeight]
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imageView.layer.cornerRadius = bounds.width / 2
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imageView.layer.cornerCurve = .continuous
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imageView.layer.borderWidth = 1.5
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imageView.layer.borderColor = UIColor(white: 0.82, alpha: 0.95).cgColor
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imageView.clipsToBounds = true
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addSubview(imageView)
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}
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required init?(coder: NSCoder) {
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fatalError("init(coder:) has not been implemented")
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}
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func present(sourceView: UIView, focusPoint: CGPoint, hostBounds: CGRect, targetPoint: CGPoint) {
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imageView.image = snapshot(from: sourceView, focusPoint: focusPoint)
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let targetCenter = CGPoint(
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x: min(max(targetPoint.x, hostBounds.minX + bounds.width / 2), hostBounds.maxX - bounds.width / 2),
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y: min(
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max(hostBounds.minY + bounds.height / 2, targetPoint.y - 74),
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hostBounds.maxY - bounds.height / 2
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)
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)
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center = targetCenter
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if isHidden {
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alpha = 0
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transform = CGAffineTransform(scaleX: 0.92, y: 0.92)
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isHidden = false
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UIView.animate(withDuration: 0.12) {
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self.alpha = 1
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self.transform = .identity
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}
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}
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}
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func dismiss() {
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guard !isHidden else { return }
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isHidden = true
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alpha = 0
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imageView.image = nil
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}
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private func snapshot(from sourceView: UIView, focusPoint: CGPoint) -> UIImage {
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let renderer = UIGraphicsImageRenderer(size: captureSize)
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return renderer.image { context in
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let cgContext = context.cgContext
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cgContext.setFillColor(UIColor.systemBackground.cgColor)
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cgContext.fill(CGRect(origin: .zero, size: captureSize))
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cgContext.translateBy(
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x: captureSize.width / 2 - focusPoint.x * magnification,
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y: captureSize.height / 2 - focusPoint.y * magnification
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)
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cgContext.scaleBy(x: magnification, y: magnification)
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sourceView.layer.render(in: cgContext)
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}
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}
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}
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