Style geometry types with symbols

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 // Copyright 2024 Esri // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // https://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License.  import ArcGIS import SwiftUI  struct StyleGeometryTypesWithSymbolsView: View {  /// The view model for the sample.  @StateObject private var model = Model()   /// A Boolean value indicating whether the edit styles view is presented.  @State private var isEditStyles = false   var body: some View {  MapView(map: model.map, graphicsOverlays: [model.graphicsOverlay])  .toolbar {  ToolbarItem(placement: .bottomBar) {  editStylesButton  }  }  }   /// The button for presenting the edit styles view.  private var editStylesButton: some View {  Button("Edit Styles") {  isEditStyles = true  }  .popover(isPresented: $isEditStyles) {  editStyles  .presentationDetents([.fraction(0.5)])  .frame(idealWidth: 320, idealHeight: 380)  }  }   /// The view for editing the styles of the geometries.  private var editStyles: some View {  NavigationStack {  SymbolsEditor(model: model)  .navigationTitle("Edit Styles")  .navigationBarTitleDisplayMode(.inline)  .toolbar {  ToolbarItem(placement: .confirmationAction) {  Button("Done") {  isEditStyles = false  }  }  }  }  } }  extension StyleGeometryTypesWithSymbolsView {  /// The view model for the sample.  final class Model: ObservableObject {  /// A map with topographic basemap initially centered on Woolgarston, England.  let map: Map = {  let map = Map(basemapStyle: .arcGISTopographic)  map.initialViewpoint = Viewpoint(center: Point(x: -225e3, y: 6_553e3), scale: 88e3)  return map  }()   /// A graphics overlay for displaying the geometry graphics on the map view.  let graphicsOverlay = GraphicsOverlay()   /// The simple marker symbol for styling the point.  let pointSymbol = SimpleMarkerSymbol(style: .circle, color: .purple, size: 12)   /// The simple line symbol for styling the polyline.  let polylineSymbol = SimpleLineSymbol(style: .dashDotDot, color: .red, width: 6)   /// The simple fill symbol for styling the polygon.  let polygonSymbol = SimpleFillSymbol(  style: .forwardDiagonal,  color: .blue,  outline: SimpleLineSymbol(style: .solid, color: .green, width: 3)  )   init() {  // Creates and adds graphics to the graphics overlay.  let graphics = makeGraphics()  graphicsOverlay.addGraphics(graphics)  }   /// Creates the graphics for the sample.  /// - Returns: Graphics with a geometry and symbol.  private func makeGraphics() -> [Graphic] {  // Creates graphics using a geometry and symbol.  let point = Point(x: -225e3, y: 6_560e3)  let pointGraphic = Graphic(geometry: point, symbol: pointSymbol)   let polyline = Polyline(points: [  Point(x: -223e3, y: 6_559e3),  Point(x: -227e3, y: 6_559e3)  ])  let polylineGraphic = Graphic(geometry: polyline, symbol: polylineSymbol)   let polygon = Polygon(points: [  Point(x: -222e3, y: 6_558e3),  Point(x: -228e3, y: 6_558e3),  Point(x: -228e3, y: 6_555e3),  Point(x: -222e3, y: 6_555e3)  ])  let polygonGraphic = Graphic(geometry: polygon, symbol: polygonSymbol)   // Creates graphics using points and picture marker symbols.  let pinSymbol = makePictureMarkerSymbolFromImage()  let pinPoint = Point(x: -226_770, y: 6_550_470)  let pinGraphic = Graphic(geometry: pinPoint, symbol: pinSymbol)   let campsiteSymbol = makePictureMarkerSymbolFromURL()  let campsitePoint = Point(x: -223_560, y: 6_552_020)  let campsiteGraphic = Graphic(geometry: campsitePoint, symbol: campsiteSymbol)   return [pointGraphic, polylineGraphic, polygonGraphic, pinGraphic, campsiteGraphic]  }   /// Creates a picture marker symbol from an image in the project assets.  /// - Returns: A new `PictureMarkerSymbol` object.  private func makePictureMarkerSymbolFromImage() -> PictureMarkerSymbol {  let pinSymbol = PictureMarkerSymbol(image: .pinBlueStar)   // Changes the symbol's offset, so the symbol aligns properly to the point.  pinSymbol.offsetY = pinSymbol.image!.size.height / 2   return pinSymbol  }   /// Creates a picture marker symbol using a remote image.  /// - Returns: A new `PictureMarkerSymbol` object.  private func makePictureMarkerSymbolFromURL() -> PictureMarkerSymbol {  let imageURL = URL(  string: "https://static.arcgis.com/images/Symbols/OutdoorRecreation/Camping.png"  )!  let campsiteSymbol = PictureMarkerSymbol(url: imageURL)   campsiteSymbol.width = 25  campsiteSymbol.height = 25   return campsiteSymbol  }  } }  #Preview {  StyleGeometryTypesWithSymbolsView() }