Fix performance and undo

[rbdr/map] / Map / Views / MapRender.swift

diff --git a/Map/Views/MapRender.swift b/Map/Views/MapRender.swift
index b35b7241b8ee7cb0a3d750f8065902d119e2804f..aa97e22ab12a883a247a5a259b8dae64dce5a8c4 100644 (file)
--- a/Map/Views/MapRender.swift
+++ b/Map/Views/MapRender.swift
@@ -5,6 +5,7 @@
 //  Created by Ruben Beltran del Rio on 2/1/21.
 //
 
+import Combine
 import CoreData
 import CoreGraphics
 import SwiftUI
@@ -13,8 +14,10 @@ struct MapRenderView: View {
 
   @Environment(\.colorScheme) var colorScheme
 
-  @ObservedObject var map: Map
-  let evolution: Stage
+  @Binding var content: String
+  @Binding var evolution: Stage
+
+  @State var parsedMap: ParsedMap = ParsedMap.empty
 
   let mapSize = CGSize(width: 1300.0, height: 1000.0)
 
@@ -22,10 +25,6 @@ struct MapRenderView: View {
   let vertexSize = CGSize(width: 25.0, height: 25.0)
   let padding = CGFloat(30.0)
 
-  var parsedMap: ParsedMap {
-    return map.parse()
-  }
-
   var body: some View {
     ZStack(alignment: .topLeading) {
 
@@ -33,7 +32,7 @@ struct MapRenderView: View {
         path.addRect(
           CGRect(
             x: -padding, y: -padding, width: mapSize.width + padding * 2,
-            height: mapSize.height + padding * 2))
+            height: mapSize.height + padding * 4))
       }.fill(MapColor.colorForScheme(colorScheme).background)
 
       MapStages(mapSize: mapSize, lineWidth: lineWidth, stages: parsedMap.stages)
@@ -48,14 +47,20 @@ struct MapRenderView: View {
         mapSize: mapSize, lineWidth: lineWidth, vertexSize: vertexSize, edges: parsedMap.edges)
     }.frame(
       width: mapSize.width,
-      height: mapSize.height, alignment: .topLeading
-    ).padding(padding)
+      height: mapSize.height + 2 * padding, alignment: .topLeading
+    ).onAppear {
+      self.parsedMap = Map.parse(content: content)
+    }.padding(padding).onChange(of: content) { newState in
+      self.parsedMap = Map.parse(content: newState)
+    }
   }
 }
 
 struct MapRenderView_Previews: PreviewProvider {
   static var previews: some View {
-    MapDetailView(map: Map()).environment(
+    MapRenderView(
+      content: Binding.constant(""), evolution: Binding.constant(Stage.stages(.general))
+    ).environment(
       \.managedObjectContext, PersistenceController.preview.container.viewContext)
   }
 }