From 44c0b7ebdd05a0e19f9d7cd4540644f5cf191bdf Mon Sep 17 00:00:00 2001
From: Karou <leaguehatesme@gmail.com>
Date: Fri, 26 Dec 2025 02:31:50 -0500
Subject: [PATCH] First try

---
 .../Internal/TextureManager.BlameTracker.cs   |  2 +-
 .../Textures/Internal/TextureManager.cs       | 50 ++++++++++++++++++-
 .../Internal/TextureManagerPluginScoped.cs    |  9 ++++
 Dalamud/Plugin/Services/ITextureProvider.cs   |  5 ++
 4 files changed, 63 insertions(+), 3 deletions(-)

diff --git a/Dalamud/Interface/Textures/Internal/TextureManager.BlameTracker.cs b/Dalamud/Interface/Textures/Internal/TextureManager.BlameTracker.cs
index fde40d462..6e1e25314 100644
--- a/Dalamud/Interface/Textures/Internal/TextureManager.BlameTracker.cs
+++ b/Dalamud/Interface/Textures/Internal/TextureManager.BlameTracker.cs
@@ -59,7 +59,7 @@ internal sealed partial class TextureManager
     /// <param name="textureWrap">The texture.</param>
     /// <param name="ownerPlugin">The plugin.</param>
     /// <returns>Same <paramref name="textureWrap"/>.</returns>
-    public unsafe IDalamudTextureWrap Blame(IDalamudTextureWrap textureWrap, LocalPlugin? ownerPlugin)
+    public unsafe IDalamudTextureWrap Blame(IDalamudTextureWrap? textureWrap, LocalPlugin? ownerPlugin)
     {
         if (!this.dalamudConfiguration.UseTexturePluginTracking)
             return textureWrap;
diff --git a/Dalamud/Interface/Textures/Internal/TextureManager.cs b/Dalamud/Interface/Textures/Internal/TextureManager.cs
index d0f0d8c07..c5b540f7a 100644
--- a/Dalamud/Interface/Textures/Internal/TextureManager.cs
+++ b/Dalamud/Interface/Textures/Internal/TextureManager.cs
@@ -1,5 +1,7 @@
+using System.Drawing;
 using System.IO;
 using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
 using System.Threading;
 using System.Threading.Tasks;
 
@@ -17,13 +19,21 @@ using Dalamud.Plugin.Services;
 using Dalamud.Storage.Assets;
 using Dalamud.Utility;
 using Dalamud.Utility.TerraFxCom;
-
 using Lumina.Data;
 using Lumina.Data.Files;
-
 using TerraFX.Interop.DirectX;
 using TerraFX.Interop.Windows;
 
+using static TerraFX.Interop.Windows.COINIT;
+using static TerraFX.Interop.Windows.SIIGBF;
+using static TerraFX.Interop.Windows.Windows;
+
+using BitmapData = System.Drawing.Imaging.BitmapData;
+using HBITMAP = TerraFX.Interop.Windows.HBITMAP;
+using ImageLockMode = System.Drawing.Imaging.ImageLockMode;
+using IShellItemImageFactory = TerraFX.Interop.Windows.IShellItemImageFactory;
+using SIZE = TerraFX.Interop.Windows.SIZE;
+
 namespace Dalamud.Interface.Textures.Internal;
 
 /// <summary>Service responsible for loading and disposing ImGui texture wraps.</summary>
@@ -303,6 +313,42 @@ internal sealed partial class TextureManager
         return (supported & required) == required;
     }
 
+    /// <inheritdoc/>
+    public unsafe IDalamudTextureWrap? TryGetFileThumbnail(string path)
+    {
+        const int size = 256;
+        HRESULT hr = CoInitializeEx(null, (uint)(COINIT_DISABLE_OLE1DDE | COINIT_MULTITHREADED));
+        if (hr.FAILED)
+            return null;
+
+        IShellItemImageFactory* imageFact;
+        fixed (char* pstr = path)
+        {
+            hr = SHCreateItemFromParsingName(pstr, null, __uuidof<IShellItemImageFactory>(), (void**)&imageFact);
+        }
+
+        if (hr.FAILED)
+            return null;
+
+        HBITMAP hbmp;
+        imageFact->GetImage(new SIZE(cx: size, cy: size), (int)SIIGBF_BIGGERSIZEOK, &hbmp);
+        var image = Image.FromHbitmap(hbmp);
+        BitmapData bd = image.LockBits(new(Point.Empty, image.Size), ImageLockMode.ReadOnly, image.PixelFormat);
+        var rowSize = bd.Stride < 0 ? -bd.Stride : bd.Stride;
+        var pixels = new byte[bd.Height * rowSize];
+        var iptr = bd.Scan0;
+
+        for (int y = 0; y < bd.Height; y++)
+        {
+            Marshal.Copy(IntPtr.Add(iptr, y * bd.Stride),
+                         pixels, y * rowSize,
+                         rowSize);
+        }
+
+        image.UnlockBits(bd);
+        return this.CreateFromRaw(new RawImageSpecification(bd.Width, bd.Height, (int)DXGI_FORMAT.DXGI_FORMAT_B8G8R8A8_UNORM), pixels.AsSpan());
+    }
+
     /// <inheritdoc cref="ITextureProvider.CreateFromRaw"/>
     internal unsafe IDalamudTextureWrap NoThrottleCreateFromRaw(
         RawImageSpecification specs,
diff --git a/Dalamud/Interface/Textures/Internal/TextureManagerPluginScoped.cs b/Dalamud/Interface/Textures/Internal/TextureManagerPluginScoped.cs
index ac6de7dd7..e87d8af43 100644
--- a/Dalamud/Interface/Textures/Internal/TextureManagerPluginScoped.cs
+++ b/Dalamud/Interface/Textures/Internal/TextureManagerPluginScoped.cs
@@ -454,6 +454,15 @@ internal sealed class TextureManagerPluginScoped
         await manager.CopyToClipboardAsync(wrap, preferredFileNameWithoutExtension, leaveWrapOpen, cancellationToken);
     }
 
+    /// <inheritdoc/>
+    public IDalamudTextureWrap? TryGetFileThumbnail(string path)
+    {
+        var manager = this.ManagerOrThrow;
+        var textureWrap = manager.TryGetFileThumbnail(path);
+        manager.Blame(textureWrap, this.plugin);
+        return textureWrap;
+    }
+
     private void ResultOnInterceptTexDataLoad(string path, ref string? replacementPath) =>
         this.InterceptTexDataLoad?.Invoke(path, ref replacementPath);
 }
diff --git a/Dalamud/Plugin/Services/ITextureProvider.cs b/Dalamud/Plugin/Services/ITextureProvider.cs
index dc0522aa8..83420f6c2 100644
--- a/Dalamud/Plugin/Services/ITextureProvider.cs
+++ b/Dalamud/Plugin/Services/ITextureProvider.cs
@@ -330,4 +330,9 @@ public interface ITextureProvider : IDalamudService
     /// <c>((delegate* unmanaged&lt;nint, void&gt;)(*(nint**)ptr)[3](ptr)</c>.</para>
     /// </remarks>
     nint ConvertToKernelTexture(IDalamudTextureWrap wrap, bool leaveWrapOpen = false);
+
+    /// <summary>Tries to get a files thumbnail from the Win32 API</summary>
+    /// <param name="filePath">Path to file you want to preview.</param>
+    /// <returns>A <see cref="IDalamudTextureWrap"/> TextureWrap or null.</returns>
+    IDalamudTextureWrap? TryGetFileThumbnail(string filePath);
 }