diff --git a/macOS/PostEditor/MacEditorTextView.swift b/macOS/PostEditor/MacEditorTextView.swift index e5f8808..ee3d7d7 100644 --- a/macOS/PostEditor/MacEditorTextView.swift +++ b/macOS/PostEditor/MacEditorTextView.swift @@ -1,212 +1,213 @@ // Based on: // // MacEditorTextView // Copyright (c) Thiago Holanda 2020 // https://twitter.com/tholanda // // MIT license // // See: https://gist.github.com/unnamedd/6e8c3fbc806b8deb60fa65d6b9affab0 import Combine import SwiftUI struct MacEditorTextView: NSViewRepresentable { @Binding var text: String var isFirstResponder: Bool = false var isEditable: Bool = true var font: NSFont? = NSFont(name: PostAppearance.serif.rawValue, size: 17) var onEditingChanged: () -> Void = {} var onCommit: () -> Void = {} var onTextChange: (String) -> Void = { _ in } func makeCoordinator() -> Coordinator { Coordinator(self) } func makeNSView(context: Context) -> CustomTextView { let textView = CustomTextView( text: text, isEditable: isEditable, isFirstResponder: isFirstResponder, font: font ) textView.delegate = context.coordinator return textView } func updateNSView(_ view: CustomTextView, context: Context) { view.text = text view.selectedRanges = context.coordinator.selectedRanges } } // MARK: - Coordinator extension MacEditorTextView { class Coordinator: NSObject, NSTextViewDelegate { var parent: MacEditorTextView var selectedRanges: [NSValue] = [] var didBecomeFirstResponder: Bool = false init(_ parent: MacEditorTextView) { self.parent = parent } func textDidBeginEditing(_ notification: Notification) { guard let textView = notification.object as? NSTextView else { return } self.parent.text = textView.string self.parent.onEditingChanged() } func textDidChange(_ notification: Notification) { guard let textView = notification.object as? NSTextView else { return } self.parent.text = textView.string self.selectedRanges = textView.selectedRanges self.parent.onTextChange(textView.string) } func textDidEndEditing(_ notification: Notification) { guard let textView = notification.object as? NSTextView else { return } self.parent.text = textView.string self.parent.onCommit() } } } // MARK: - CustomTextView final class CustomTextView: NSView { private var isFirstResponder: Bool private var isEditable: Bool private var font: NSFont? weak var delegate: NSTextViewDelegate? var text: String { didSet { textView.string = text } } var selectedRanges: [NSValue] = [] { didSet { guard selectedRanges.count > 0 else { return } textView.selectedRanges = selectedRanges } } private lazy var scrollView: NSScrollView = { let scrollView = NSScrollView() scrollView.drawsBackground = false scrollView.borderType = .noBorder scrollView.hasVerticalScroller = true scrollView.hasHorizontalRuler = false scrollView.autoresizingMask = [.width, .height] scrollView.translatesAutoresizingMaskIntoConstraints = false return scrollView }() private lazy var textView: NSTextView = { let contentSize = scrollView.contentSize let textStorage = NSTextStorage() let layoutManager = NSLayoutManager() textStorage.addLayoutManager(layoutManager) let textContainer = NSTextContainer(containerSize: scrollView.frame.size) textContainer.widthTracksTextView = true textContainer.containerSize = NSSize( width: contentSize.width, height: CGFloat.greatestFiniteMagnitude ) layoutManager.addTextContainer(textContainer) let paragraphStyle = NSMutableParagraphStyle() - let lineHeightMultiple: CGFloat = 1.5 - paragraphStyle.lineHeightMultiple = lineHeightMultiple + let lineSpacing: CGFloat = 8.5 + paragraphStyle.lineSpacing = lineSpacing let textView = NSTextView(frame: .zero, textContainer: textContainer) textView.autoresizingMask = .width textView.delegate = self.delegate textView.drawsBackground = false textView.font = self.font textView.defaultParagraphStyle = paragraphStyle textView.isEditable = self.isEditable textView.isHorizontallyResizable = false textView.isVerticallyResizable = true textView.maxSize = NSSize( width: CGFloat.greatestFiniteMagnitude, height: CGFloat.greatestFiniteMagnitude ) textView.minSize = NSSize(width: 0, height: contentSize.height) textView.textColor = NSColor.labelColor textView.allowsUndo = true textView.usesFindPanel = true textView.isAutomaticDashSubstitutionEnabled = false textView.isRichText = false + textView.typingAttributes = [.paragraphStyle: paragraphStyle, .font: font] // H/T Daniel Jalkut return textView }() // MARK: - Init init(text: String, isEditable: Bool, isFirstResponder: Bool, font: NSFont?) { self.font = font self.isFirstResponder = isFirstResponder self.isEditable = isEditable self.text = text super.init(frame: .zero) } required init?(coder: NSCoder) { fatalError("init(coder:) has not been implemented") } // MARK: - Life cycle override func viewWillDraw() { super.viewWillDraw() setupScrollViewConstraints() setupTextView() if isFirstResponder { self.window?.makeFirstResponder(self.textView) } } func setupScrollViewConstraints() { scrollView.translatesAutoresizingMaskIntoConstraints = false addSubview(scrollView) NSLayoutConstraint.activate([ scrollView.topAnchor.constraint(equalTo: topAnchor), scrollView.trailingAnchor.constraint(equalTo: trailingAnchor), scrollView.bottomAnchor.constraint(equalTo: bottomAnchor), scrollView.leadingAnchor.constraint(equalTo: leadingAnchor) ]) } func setupTextView() { scrollView.documentView = textView } }