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import Cocoa
import Quartz
import SwiftTreeSitter
import SwiftTreeSitterLayer
import SwiftUI
import TreeSitterWmap
import WmapParser
class PreviewViewController: NSViewController, QLPreviewingController {
override var nibName: NSNib.Name? {
return NSNib.Name("PreviewViewController")
}
override func loadView() {
super.loadView()
}
func preparePreviewOfFile(at url: URL) async throws {
// Read the .wmap file content
let content = try String(contentsOf: url, encoding: .utf8)
// Get the user's preview style preference from shared UserDefaults
let sharedDefaults =
UserDefaults(suiteName: "group.systems.tranquil.Map") ?? UserDefaults.standard
let previewStyleString =
sharedDefaults.string(forKey: "quickLookPreviewStyle") ?? QuickLookPreviewStyle.map.rawValue
let previewStyle = QuickLookPreviewStyle(rawValue: previewStyleString) ?? .map
await MainActor.run {
// Clear any existing subviews and force cleanup
for subview in view.subviews {
if let hostingView = subview as? NSHostingView<AnyView> {
hostingView.rootView = AnyView(EmptyView())
}
subview.removeFromSuperview()
}
// Force memory cleanup
autoreleasepool {
let previewContent: AnyView
switch previewStyle {
case .plainText:
previewContent = AnyView(createPlainTextView(content: content))
case .highlightedText:
previewContent = AnyView(
createHighlightedTextView(content: content))
case .map:
let parsedMap = WmapParser.parse(content)
previewContent = AnyView(MapPreviewView(parsedMap: parsedMap))
}
let hostingView = NSHostingView(rootView: previewContent)
hostingView.translatesAutoresizingMaskIntoConstraints = false
view.addSubview(hostingView)
NSLayoutConstraint.activate([
hostingView.topAnchor.constraint(equalTo: view.topAnchor),
hostingView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
hostingView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
hostingView.bottomAnchor.constraint(equalTo: view.bottomAnchor),
])
view.needsLayout = true
view.layoutSubtreeIfNeeded()
} // autoreleasepool
}
}
private func createPlainTextView(content: String) -> some View {
ScrollView([.horizontal, .vertical]) {
Text(content)
.font(.monospaced(.body)())
.multilineTextAlignment(.leading)
.frame(maxWidth: .infinity, maxHeight: .infinity, alignment: .topLeading)
.padding()
}
.frame(maxWidth: .infinity, maxHeight: .infinity)
.background(Color.white)
}
private func createHighlightedTextView(content: String) -> some View {
QuickLookTextEditor(content: content)
.frame(maxWidth: .infinity, maxHeight: .infinity)
.background(Color.white)
}
deinit {
// Cleanup when view controller is deallocated
for subview in view.subviews {
if let hostingView = subview as? NSHostingView<AnyView> {
hostingView.rootView = AnyView(EmptyView())
}
subview.removeFromSuperview()
}
}
}
// A SwiftUI view specifically for QuickLook preview
struct MapPreviewView: View {
let parsedMap: WmapParser.Map
@State private var selectedEvolution: StageType = .general
var body: some View {
GeometryReader { geometry in
let mapSize = Dimensions.Map.size
let padding = Dimensions.Map.padding
let totalWidth = mapSize.width + 2 * padding
let totalHeight = mapSize.height + 2 * padding
// Calculate scale to fit the available space
let scaleX = geometry.size.width / totalWidth
let scaleY = geometry.size.height / totalHeight
let scale = min(scaleX, scaleY, 1.0) // Don't scale up, only down
ScrollView([.horizontal, .vertical]) {
MapRenderView(
parsedMap: parsedMap,
evolution: $selectedEvolution
)
.drawingGroup(opaque: false)
.scaleEffect(scale)
.frame(
width: totalWidth * scale,
height: totalHeight * scale
)
}
.frame(maxWidth: .infinity, maxHeight: .infinity)
.background(Color.white)
}
}
}
// A read-only text editor for QuickLook that shows syntax highlighting
struct QuickLookTextEditor: NSViewRepresentable {
let content: String
func makeNSView(context: Context) -> NSScrollView {
let scrollView = NSTextView.scrollableTextView()
let textView = scrollView.documentView as! NSTextView
// Configure the scroll view
scrollView.hasVerticalScroller = true
scrollView.hasHorizontalScroller = true
scrollView.autohidesScrollers = false
// Configure the text view for read-only display
textView.isEditable = false
textView.isSelectable = true
textView.backgroundColor = NSColor.textBackgroundColor
textView.font = NSFont.monospacedSystemFont(ofSize: 13, weight: .regular)
textView.string = content
textView.isVerticallyResizable = true
textView.isHorizontallyResizable = true
textView.textContainer?.widthTracksTextView = false
textView.textContainer?.containerSize = NSSize(
width: CGFloat.greatestFiniteMagnitude, height: CGFloat.greatestFiniteMagnitude)
// Apply syntax highlighting using tree-sitter
if let textStorage = textView.textStorage {
applyTreeSitterHighlighting(textStorage: textStorage, content: content)
}
return scrollView
}
func updateNSView(_ nsView: NSScrollView, context: Context) {
// No updates needed for read-only view
}
private func applyTreeSitterHighlighting(textStorage: NSTextStorage, content: String) {
// Set up tree-sitter language layer
guard let wmapConfiguration = try? LanguageConfiguration(tree_sitter_wmap(), name: "wmap")
else { return }
let languageConfiguration = LanguageLayer.Configuration(languageProvider: { name in
switch name {
case "wmap": return wmapConfiguration
default: return nil
}
})
guard
let rootLayer = try? LanguageLayer(
languageConfig: wmapConfiguration, configuration: languageConfiguration)
else { return }
// Update layer with content
rootLayer.replaceContent(with: content)
// Set default text color
let fullRange = NSRange(location: 0, length: textStorage.length)
textStorage.addAttribute(.foregroundColor, value: NSColor.textColor, range: fullRange)
// Apply tree-sitter highlighting
guard
let highlights = try? rootLayer.highlights(
in: fullRange, provider: content.predicateTextProvider)
else { return }
for highlight in highlights {
let color = NSColor.Theme.Syntax.colorForSyntax(highlight.name)
textStorage.addAttribute(.foregroundColor, value: color, range: highlight.range)
}
}
}
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