Basic asset thumbnails

GlitchyEditor/src/Assets/AssetThumbnailManager.bf

@@ -0,0 +1,32 @@
+using GlitchyEngine.Renderer;
+namespace GlitchyEditor.Assets;
+
+class AssetThumbnailManager
+{
+	private EditorIcons _icons ~ _.ReleaseRef();
+
+	public this(EditorIcons icons)
+	{
+		_icons = icons..AddRef();
+	}
+
+	public SubTexture2D GetThumbnail(AssetNode assetNode)
+	{
+		if (assetNode.IsDirectory)
+			return _icons.Folder;
+		
+		if (assetNode.Path.EndsWith(".scene"))
+			return _icons.File_Scene;
+
+		if (assetNode.Path.EndsWith(".mat"))
+			return _icons.File_Material;
+
+		if (assetNode.Path.EndsWith(".cs"))
+			return _icons.File_CSharpScript;
+		
+		if (assetNode.Path.EndsWith(".hlsl"))
+			return _icons.File_Shader;
+
+		return _icons.File;
+	}
+}

GlitchyEditor/src/EditWindows/ContentBrowserWindow.bf

@@ -22,6 +22,8 @@ namespace GlitchyEditor.EditWindows
 		private String _fileExtension ~ delete _;
 		private CreateAssetFunc _doCreateAsset ~ delete _;
 
+		private SubTexture2D _icon ~ _?.ReleaseRef();
+
 		public delegate void CreateAssetFunc(StringView outputPath);
 
 		public StringView Name => _name;
@@ -30,12 +32,17 @@ namespace GlitchyEditor.EditWindows
 
 		public CreateAssetFunc CreateAsset => _doCreateAsset;
 
-		public this(StringView name, StringView defaultFileName, StringView fileExtension, CreateAssetFunc createAsset)
+		public SubTexture2D Icon => _icon;
+
+		public this(StringView name, StringView defaultFileName, StringView fileExtension, CreateAssetFunc createAsset, SubTexture2D icon = null)
 		{
 			_name = new String(name);
 			_defaultFileName = new String(defaultFileName);
 			_fileExtension = new String(fileExtension);
 			_doCreateAsset = createAsset;
+
+			_icon = icon;
+			_icon?.AddRef();
 		}
 	}
 
@@ -58,6 +65,8 @@ namespace GlitchyEditor.EditWindows
 		private append String _assetToRename = .();
 		private char8[128] _renameFileNameBuffer;
 
+		private AssetThumbnailManager _thumbnailManager;
+
 		public static SubTexture2D s_FolderTexture;
 		public static SubTexture2D s_FileTexture;
 
@@ -69,9 +78,10 @@ namespace GlitchyEditor.EditWindows
 		bool _showNewFile = false;
 		AssetCreator _newFileCreator = null;
 
-		public this(EditorContentManager contentManager)
+		public this(EditorContentManager contentManager, AssetThumbnailManager thumbnailManager)
 		{
 			_manager = contentManager;
+			_thumbnailManager = thumbnailManager;
 		}
 
 		/// Registers an asset creator that will show up in the "Create new" drop down menu
@@ -577,7 +587,7 @@ namespace GlitchyEditor.EditWindows
 			}
 
 			// TODO: preview images
-			SubTexture2D image = entry->IsDirectory ? s_FolderTexture : s_FileTexture;
+			SubTexture2D image = _thumbnailManager.GetThumbnail(entry.Value);
 
 			ImGui.ImageButton("FileImage", image, (.)IconSize);
 
@@ -713,7 +723,7 @@ namespace GlitchyEditor.EditWindows
 			ImGui.PushStyleColor(.Button, ImGui.Vec4(0, 0, 0, 0));
 
 			// TODO: preview images
-			SubTexture2D image = s_FileTexture;
+			SubTexture2D image = _newFileCreator.Icon ?? s_FileTexture;
 
 			ImGui.ImageButton("FileImage", image, (.)IconSize);
 

GlitchyEditor/src/Editor.bf

@@ -14,6 +14,7 @@ namespace GlitchyEditor
 		private Scene _scene;
 
 		private EditorContentManager _contentManager;
+		private AssetThumbnailManager _thumbnailManager;
 
 		private Project _currentProject;
 
@@ -41,6 +42,8 @@ namespace GlitchyEditor
 
 		public EditorContentManager ContentManager => _contentManager;
 
+		public AssetThumbnailManager ThumbnailManager => _thumbnailManager;
+
 		public Project CurrentProject
 		{
 			get => _currentProject;
@@ -68,13 +71,14 @@ namespace GlitchyEditor
 		public static Editor Instance => s_Instance;
 
 		/// Creates a new editor for the given world
-		public this(Scene scene, EditorContentManager contentManager)
+		public this(Scene scene, EditorContentManager contentManager, AssetThumbnailManager thumbnailManager)
 		{
 			Log.EngineLogger.AssertDebug(s_Instance == null, "Cannot create a second instance of a singleton.");
 			s_Instance = this;
 
 			_scene = scene;
 			_contentManager = contentManager;
+			_thumbnailManager = thumbnailManager;
 
 			InitWindows();
 		}
@@ -90,7 +94,7 @@ namespace GlitchyEditor
 			_gameViewportWindow = new GameViewportWindow(this);
 			_entityHierarchyWindow = new EntityHierarchyWindow(this, _scene);
 			_componentEditWindow = new ComponentEditWindow(_entityHierarchyWindow);
-			_contentBrowserWindow = new ContentBrowserWindow((.)Application.Get().ContentManager);
+			_contentBrowserWindow = new ContentBrowserWindow((.)Application.Get().ContentManager, _thumbnailManager);
 			_propertiesWindow = new PropertiesWindow(this);
 			_assetViewer = new AssetViewer((.)Application.Get().ContentManager);
 			_logWindow = new LogWindow();

GlitchyEditor/src/EditorIcons.bf

@@ -23,6 +23,10 @@ namespace GlitchyEditor
 		public SubTexture2D Warning ~ _.ReleaseRef();
 		public SubTexture2D Info ~ _.ReleaseRef();
 		public SubTexture2D Trace ~ _.ReleaseRef();
+		public SubTexture2D File_Scene ~ _.ReleaseRef();
+		public SubTexture2D File_Material ~ _.ReleaseRef();
+		public SubTexture2D File_CSharpScript ~ _.ReleaseRef();
+		public SubTexture2D File_Shader ~ _.ReleaseRef();
 
 		public SamplerState SamplerState
 		{
@@ -49,6 +53,10 @@ namespace GlitchyEditor
 			Warning = GetNextGridTexture(ref pen, iconSize);
 			Info = GetNextGridTexture(ref pen, iconSize);
 			Trace = GetNextGridTexture(ref pen, iconSize);
+			File_Scene = GetNextGridTexture(ref pen, iconSize);
+			File_Material = GetNextGridTexture(ref pen, iconSize);
+			File_CSharpScript = GetNextGridTexture(ref pen, iconSize);
+			File_Shader = GetNextGridTexture(ref pen, iconSize);
 		}
 
 		private SubTexture2D GetNextGridTexture(ref float2 pen, float2 iconSize)

GlitchyEditor/src/EditorLayer.bf

@@ -109,6 +109,8 @@ namespace GlitchyEditor
 		/// Returns whether or not the current scene can be saved.
 		public bool CanSaveScene => _sceneState == .Edit;
 
+		private AssetThumbnailManager _thumbnailManager ~ delete _;
+
 		[AllowAppend]
 		public this(String[] args, EditorContentManager contentManager) : base("Editor")
 		{
@@ -125,7 +127,9 @@ namespace GlitchyEditor
 
 			_camera = EditorCamera(float3(-3f, 3f, -3f), Quaternion.FromEulerAngles(MathHelper.ToRadians(40), MathHelper.ToRadians(25), 0), MathHelper.ToRadians(75), 0.1f, 1);
 			_camera.RenderTarget = _cameraTarget;
-			
+
+			_thumbnailManager = new AssetThumbnailManager(_editorIcons);
+
 			InitEditor();
 
 			RegisterAssetCreators();
@@ -156,7 +160,7 @@ namespace GlitchyEditor
 					{
 						Log.ClientLogger.Error($"Directory \"{path}\" could not be created ({error}).");
 					}
-				}));
+				}, _editorIcons.Folder));
 
 			Editor.Instance.ContentBrowserWindow.InsertAssetCreatorSeparator();
 
@@ -166,7 +170,7 @@ namespace GlitchyEditor
 					{
 						SaveScene(newScene, path);
 					}
-				}));
+				}, _editorIcons.File_Scene));
 
 			Editor.Instance.ContentBrowserWindow.RegisterAssetCreator(new AssetCreator("Material", "New Material", ".mat", new (path) =>
 				{
@@ -174,7 +178,7 @@ namespace GlitchyEditor
 					{
 						_contentManager.SaveAssetToFile(newMaterial, path);
 					}
-				}));
+				}, _editorIcons.File_Material));
 			
 			Editor.Instance.ContentBrowserWindow.RegisterAssetCreator(new AssetCreator("Script", "New Entity", ".cs", new (path) =>
 				{
@@ -240,7 +244,7 @@ namespace GlitchyEditor
 					{
 						Log.EngineLogger.Error($"Failed to edit project file ({err}). Please add the file to the project manually.");
 					}
-				}));
+				}, _editorIcons.File_CSharpScript));
 		}
 
 		private void ToCSharpName(String input, String output)
@@ -354,7 +358,7 @@ namespace GlitchyEditor
 
 		private void InitEditor()
 		{
-			_editor = new Editor(_editorScene, _contentManager);
+			_editor = new Editor(_editorScene, _contentManager, _thumbnailManager);
 			_editor.SceneViewportWindow.ViewportSizeChanged.Add(new (s, e) => EditorViewportSizeChanged(s, e));
 			_editor.GameViewportWindow.ViewportSizeChanged.Add(new (s, e) => GameViewportSizeChanged(s, e));
 			_editor.CurrentCamera = &_camera;