Add CADability.Avalonia project

CADability.Avalonia/CADability.Avalonia.csproj

@@ -0,0 +1,24 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <Nullable>enable</Nullable>
+    <ApplicationManifest>app.manifest</ApplicationManifest>
+    <AvaloniaUseCompiledBindingsByDefault>true</AvaloniaUseCompiledBindingsByDefault>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Avalonia" Version="11.3.10" />
+    <PackageReference Include="Avalonia.Desktop" Version="11.3.10" />
+    <PackageReference Include="Avalonia.Themes.Fluent" Version="11.3.10" />
+    <PackageReference Include="Avalonia.Fonts.Inter" Version="11.3.10" />
+    <!--Condition below is needed to remove Avalonia.Diagnostics package from build output in Release configuration.-->
+    <PackageReference Include="Avalonia.Diagnostics" Version="11.3.10">
+      <IncludeAssets Condition="'$(Configuration)' != 'Debug'">None</IncludeAssets>
+      <PrivateAssets Condition="'$(Configuration)' != 'Debug'">All</PrivateAssets>
+    </PackageReference>
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\CADability\CADability.csproj" />
+  </ItemGroup>
+</Project>

CADability.Avalonia/CadCanvas.axaml

@@ -0,0 +1,5 @@
+<UserControl xmlns="https://github.com/avaloniaui"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        x:Class="CADability.Avalonia.CadCanvas">
+        <!-- Height="300"> -->
+</UserControl>

CADability.Avalonia/CadCanvas.axaml.cs

@@ -0,0 +1,83 @@
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.OpenGL;
+using Avalonia.OpenGL.Controls;
+using CADability.GeoObject;
+using CADability.Substitutes;
+using CADability.UserInterface;
+using System;
+using System.Numerics;
+using static Avalonia.OpenGL.GlConsts;
+
+namespace CADability.Avalonia
+{
+    public partial class CadCanvas: UserControl, ICanvas
+    {
+        private static CADability.Substitutes.Rectangle Subst(Rect v)
+        {
+            return new Substitutes.Rectangle((int)v.X, (int)v.Y, (int)v.Width, (int)v.Height);
+        }
+
+        private PaintToOpenGL paintTo3D;
+        private IFrame frame;
+        private IView view;
+        private String currentCursor;
+
+        public CadCanvas()
+        {
+            InitializeComponent();
+            // CadCanvasControl canvasControl = new CadCanvasControl();
+            paintTo3D = new PaintToOpenGL();
+            this.Content = paintTo3D;
+        }
+
+        void ICanvas.Invalidate() {}
+
+        Rectangle ICanvas.ClientRectangle => Subst(base.Bounds);
+
+        IFrame ICanvas.Frame
+        {
+            get { return frame; }
+        }
+
+        string ICanvas.Cursor
+        {
+            get { return currentCursor; }
+            set { currentCursor = value; } //TODO
+        }
+
+        IPaintTo3D ICanvas.PaintTo3D
+        {
+            get { return paintTo3D; }
+        }
+
+        public event Action<ICanvas> OnPaintDone;
+
+        void ICanvas.ShowView(IView toShow)
+        {
+            view = toShow;
+            // TODO init paintTo3D here or in constructor?
+            paintTo3D.View = view;
+            // TODO view.Connect needed?
+        }
+
+        IView ICanvas.GetView()
+        {
+            return view;
+        }
+
+        Substitutes.Point ICanvas.PointToClient(Substitutes.Point mousePosition)
+        {
+            throw new NotImplementedException();
+        }
+
+        void ICanvas.ShowContextMenu(MenuWithHandler[] contextMenu, Substitutes.Point viewPosition, System.Action<int> collapsed) {}
+
+        Substitutes.DragDropEffects ICanvas.DoDragDrop(GeoObjectList dragList, Substitutes.DragDropEffects all)
+        {
+            throw new NotImplementedException();
+        }
+
+        void ICanvas.ShowToolTip(string toDisplay) {}
+    }
+}

CADability.Avalonia/CadForm.axaml

@@ -0,0 +1,14 @@
+<UserControl xmlns="https://github.com/avaloniaui"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        xmlns:ca="using:CADability.Avalonia"
+        x:Class="CADability.Avalonia.CadForm">
+        <!-- <StackPanel> -->
+                <!-- <TextBlock -->
+                <!-- Margin="10" -->
+                <!-- FontSize="16" -->
+                <!-- HorizontalAlignment="Center" -->
+                <!-- Text="ShapeIt"> -->
+                <!-- </TextBlock> -->
+                <ca:CadCanvas/>
+        <!-- </StackPanel> -->
+</UserControl>

CADability.Avalonia/CadForm.axaml.cs

@@ -0,0 +1,13 @@
+using Avalonia.Controls;
+
+namespace CADability.Avalonia
+{
+    public partial class CadForm : UserControl
+    {
+        // TODO this class is currently unused, we directly use CadCanvas
+        public CadForm()
+        {
+            InitializeComponent();
+        }
+    }
+}