git.r.bdr.sh - rbdr/map/blob - Map/Data/MapDocument.swift

   1 import SwiftUI
   2 import UniformTypeIdentifiers
   3
   4 extension UTType {
   5   static var exampleText: UTType {
   6     UTType(importedAs: "systems.tranquil.map.wmap")
   7   }
   8 }
   9
  10 struct MapDocument: FileDocument {
  11   var text: String
  12
  13   init(text: String = "Hello, world!") {
  14     self.text = text
  15   }
  16
  17   static var readableContentTypes: [UTType] { [.exampleText] }
  18
  19   init(configuration: ReadConfiguration) throws {
  20     guard let data = configuration.file.regularFileContents,
  21       let string = String(data: data, encoding: .utf8)
  22     else {
  23       throw CocoaError(.fileReadCorruptFile)
  24     }
  25     text = string
  26   }
  27
  28   func fileWrapper(configuration: WriteConfiguration) throws -> FileWrapper {
  29     let data = text.data(using: .utf8)!
  30     return .init(regularFileWithContents: data)
  31   }
  32
  33   @MainActor
  34   func exportAsImage(withEvolution selectedEvolution: StageType) -> NSImage? {
  35     let renderView = MapRenderView(
  36       document: .constant(self),
  37       evolution: .constant(selectedEvolution))
  38     let renderer = ImageRenderer(content: renderView)
  39
  40     return renderer.nsImage
  41   }
  42 }