port from perforce

intromat/Intromat/Views/Previews/DxTexturePreview.xaml.cs

@@ -0,0 +1,63 @@
+using System;
+using System.Reactive.Disposables;
+using Intromat.Graphics;
+using Intromat.Pipelines;
+using Intromat.ViewModels;
+using Intromat.ViewModels.Previews;
+using ReactiveUI;
+using SharpDX.Direct3D11;
+using Splat;
+
+namespace Intromat.Views.Previews
+{
+    /// <summary>
+    /// Interaction logic for DxTexturePreview.xaml
+    /// </summary>
+    public partial class DxTexturePreview : IViewFor<DxTexturePreviewViewModel>
+    {
+        private DisplayTexturePipeline? _pipeline;
+
+        public DxTexturePreview()
+        {
+            InitializeComponent();
+
+            MouseDoubleClick += (_, _) =>
+            {
+                if (ViewModel == null)
+                    return;
+
+                var network = (CodeGenNetworkViewModel)ViewModel.Parent.Parent;
+                var main = network.Document.MainViewModel;
+                main.Preview2dContext = ViewModel;
+            };
+
+            this.WhenActivated(d =>
+            {
+                _pipeline = Locator.Current.GetService<DisplayTexturePipeline>()!;
+                this.WhenAnyObservable(v => v.ViewModel!.TextureValue).Subscribe(textureValue =>
+                {
+                    var srv = textureValue?.ShaderResourceView;
+                    if (srv != null)
+                    {
+                        _pipeline.ShaderResourceView = srv;
+                        _dxView.Render();
+                    }
+                }).DisposeWith(d);
+                _dxView.SetUpdateHandler(UpdateFrameAction);
+            });
+        }
+
+        private void UpdateFrameAction(Device device, DeviceContext context)
+        {
+            _pipeline?.Apply();
+        }
+
+        object? IViewFor.ViewModel
+        {
+            get => ViewModel;
+            set => ViewModel = (DxTexturePreviewViewModel?)value;
+        }
+
+        public DxTexturePreviewViewModel? ViewModel { get; set; }
+    }
+}