Add drag & drop to texture import.

Penumbra/Api/PenumbraApi.cs

@@ -8,7 +8,6 @@ using Penumbra.Interop.Structs;
 using Penumbra.Meta.Manipulations;
 using Penumbra.Mods;
 using System;
-using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.Diagnostics.CodeAnalysis;
 using System.IO;

Penumbra/UI/AdvancedWindow/ModEditWindow.Textures.cs

@@ -1,4 +1,6 @@
 using System;
+using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
 using System.IO;
 using System.Linq;
 using System.Numerics;
@@ -37,7 +39,8 @@ public partial class ModEditWindow
 
     private void DrawInputChild(string label, Texture tex, Vector2 size, Vector2 imageSize)
     {
-        using var child = ImRaii.Child(label, size, true);
+        using (var child = ImRaii.Child(label, size, true))
+        {
             if (!child)
                 return;
 
@@ -49,7 +52,8 @@ public partial class ModEditWindow
                 "Can import game paths as well as your own files.", _mod!.ModPath.FullName, _fileDialog, _config.DefaultModImportPath);
             if (_textureSelectCombo.Draw("##combo",
                     "Select the textures included in this mod on your drive or the ones they replace from the game files.", tex.Path,
-                _mod.ModPath.FullName.Length + 1, out var newPath) && newPath != tex.Path)
+                    _mod.ModPath.FullName.Length + 1, out var newPath)
+             && newPath != tex.Path)
                 tex.Load(_textures, newPath);
 
             if (tex == _left)
@@ -63,6 +67,10 @@ public partial class ModEditWindow
                 TextureDrawer.Draw(tex, imageSize);
         }
 
+        if (_dragDropManager.CreateImGuiTarget("TextureDragDrop", out var files, out _) && GetFirstTexture(files, out var file))
+            tex.Load(_textures, file);
+    }
+
     private void SaveAsCombo()
     {
         var (text, desc) = SaveAsStrings[_currentSaveAs];
@@ -229,6 +237,15 @@ public partial class ModEditWindow
 
         try
         {
+            _dragDropManager.CreateImGuiSource("TextureDragDrop",
+                m => m.Extensions.Any(e => ValidTextureExtensions.Contains(e.ToLowerInvariant())), m =>
+                {
+                    if (!GetFirstTexture(m.Files, out var file))
+                        return false;
+
+                    ImGui.TextUnformatted($"Dragging texture for editing: {Path.GetFileName(file)}");
+                    return true;
+                });
             var childWidth = GetChildWidth();
             var imageSize  = new Vector2(childWidth.X - ImGui.GetStyle().FramePadding.X * 2);
             DrawInputChild("Input Texture", _left, childWidth, imageSize);
@@ -259,4 +276,17 @@ public partial class ModEditWindow
 
         ImGuiUtil.HoverTooltip(tooltip);
     }
+
+    private static bool GetFirstTexture(IEnumerable<string> files, [NotNullWhen(true)] out string? file)
+    {
+        file = files.FirstOrDefault(f => ValidTextureExtensions.Contains(Path.GetExtension(f).ToLowerInvariant()));
+        return file != null;
+    }
+
+    private static readonly string[] ValidTextureExtensions =
+    {
+        ".png",
+        ".dds",
+        ".tex",
+    };
 }

Penumbra/UI/AdvancedWindow/ModEditWindow.cs

@@ -5,6 +5,7 @@ using System.Numerics;
 using System.Text;
 using Dalamud.Interface;
 using Dalamud.Interface.Components;
+using Dalamud.Interface.DragDrop;
 using Dalamud.Interface.Windowing;
 using Dalamud.Plugin.Services;
 using ImGuiNET;
@@ -40,6 +41,7 @@ public partial class ModEditWindow : Window, IDisposable
     private readonly StainService        _stainService;
     private readonly ModMergeTab         _modMergeTab;
     private readonly CommunicatorService _communicator;
+    private readonly IDragDropManager    _dragDropManager;
 
     private Mod?    _mod;
     private Vector2 _iconSize = Vector2.Zero;
@@ -521,7 +523,7 @@ public partial class ModEditWindow : Window, IDisposable
     public ModEditWindow(PerformanceTracker performance, FileDialogService fileDialog, ItemSwapTab itemSwapTab, IDataManager gameData,
         Configuration config, ModEditor editor, ResourceTreeFactory resourceTreeFactory, MetaFileManager metaFileManager,
         StainService stainService, ActiveCollections activeCollections, DalamudServices dalamud, ModMergeTab modMergeTab,
-        CommunicatorService communicator, TextureManager textures)
+        CommunicatorService communicator, TextureManager textures, IDragDropManager dragDropManager)
         : base(WindowBaseLabel)
     {
         _performance       = performance;
@@ -534,6 +536,7 @@ public partial class ModEditWindow : Window, IDisposable
         _dalamud           = dalamud;
         _modMergeTab       = modMergeTab;
         _communicator      = communicator;
+        _dragDropManager   = dragDropManager;
         _textures          = textures;
         _fileDialog        = fileDialog;
         _materialTab = new FileEditor<MtrlTab>(this, gameData, config, _fileDialog, "Materials", ".mtrl",