bug: remove eraser stroke adding into graphic context

Memola/Canvas/Contexts/GraphicContext.swift

@@ -159,7 +159,8 @@ extension GraphicContext {
                 createdAt: .now,
                 thickness: pen.thickness
             )
-            withPersistence(\.backgroundContext) { [graphicContext = object, _stroke = eraserStroke] context in
+            eraserStroke.graphicContext = self
+            withPersistence(\.backgroundContext) { [_stroke = eraserStroke] context in
                 let stroke = EraserObject(\.backgroundContext)
                 stroke.bounds = _stroke.bounds
                 stroke.color = _stroke.color
@@ -168,11 +169,9 @@ extension GraphicContext {
                 stroke.createdAt = _stroke.createdAt
                 stroke.quads = []
                 stroke.strokes = .init()
-                graphicContext?.strokes.add(stroke)
                 _stroke.object = stroke
                 try context.saveIfNeeded()
             }
-            eraserStroke.graphicContext = self
             stroke = eraserStroke
         }
         currentStroke = stroke
@@ -219,17 +218,16 @@ extension GraphicContext {
         if let stroke = currentStroke {
             switch stroke.style {
             case .marker:
-                guard !tree.isEmpty else { return }
-                let _stroke = tree.remove(stroke.anyStroke, in: stroke.strokeBox)
+                guard let _stroke = stroke.stroke(as: PenStroke.self) else { break }
                 withPersistence(\.backgroundContext) { [graphicContext = object, _stroke] context in
-                    if let stroke = _stroke?.stroke(as: PenStroke.self)?.object {
+                    if let stroke = _stroke.object {
                         graphicContext?.strokes.remove(stroke)
                         context.delete(stroke)
                     }
                     try context.saveIfNeeded()
                 }
             case .eraser:
-                guard let eraserStroke = stroke.stroke(as: EraserStroke.self) else { return }
+                guard let eraserStroke = stroke.stroke(as: EraserStroke.self) else { break }
                 eraserStrokes.remove(eraserStroke)
                 withPersistence(\.backgroundContext) { [eraserStroke] context in
                     if let stroke = eraserStroke.object {
@@ -238,7 +236,6 @@ extension GraphicContext {
                     try context.saveIfNeeded()
                 }
             }
-
         }
         currentStroke = nil
         currentPoint = nil

Memola/Canvas/Core/Canvas.swift

@@ -59,7 +59,7 @@ extension Canvas {
             let graphicContext = canvas.graphicContext
             self?.graphicContext.object = graphicContext
             self?.graphicContext.loadStrokes(bounds)
-            context.refresh(canvas, mergeChanges: false)
+            context.refreshAllObjects()
             DispatchQueue.main.async { [weak self] in
                 self?.state = .loaded
             }

Memola/Features/Memo/PenDock/PenDock.swift

@@ -194,7 +194,6 @@ struct PenDock: View {
                     .stroke(Color.gray, lineWidth: 0.4)
             }
             .padding(0.2)
-            .drawingGroup()
         }
         .buttonStyle(.plain)
         .hoverEffect(.lift)
@@ -302,7 +301,6 @@ struct PenDock: View {
                     .resizable()
                     .renderingMode(.template)
             }
-            .drawingGroup()
             .foregroundStyle(.black.opacity(0.2))
             .blur(radius: 3)
             if let tip = pen.style.icon.tip {

Memola/Features/Memos/MemosView.swift

@@ -68,8 +68,8 @@ struct MemosView: View {
         memoObject.updatedAt = .now
 
         let canvasObject = CanvasObject(context: managedObjectContext)
-        canvasObject.width = 4_000
-        canvasObject.height = 4_000
+        canvasObject.width = 8_000
+        canvasObject.height = 8_000
 
         let toolObject = ToolObject(\.viewContext)
         toolObject.pens = []