From de9d9dfa1c152dcc5a745832fd5092c08dbb781c Mon Sep 17 00:00:00 2001
From: ssdfasd <2156608475@qq.com>
Date: Thu, 12 Mar 2026 20:17:43 +0800
Subject: [PATCH] Add drag preview icon in Project panel

---
 ui/src/panels/ProjectPanel.cpp | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/ui/src/panels/ProjectPanel.cpp b/ui/src/panels/ProjectPanel.cpp
index 8e435170..c2c10c8a 100644
--- a/ui/src/panels/ProjectPanel.cpp
+++ b/ui/src/panels/ProjectPanel.cpp
@@ -232,6 +232,26 @@ void ProjectPanel::RenderAssetItem(const AssetItemPtr& item, int index) {
     if (!item->fullPath.empty()) {
         if (ImGui::BeginDragDropSource(ImGuiDragDropFlags_None)) {
             ImGui::SetDragDropPayload(DRAG_DROP_TYPE, item->fullPath.c_str(), item->fullPath.length() + 1);
+            
+            ImU32 iconColor;
+            if (item->isFolder) {
+                iconColor = IM_COL32(200, 180, 100, 100);
+            } else if (item->type == "Texture") {
+                iconColor = IM_COL32(150, 200, 150, 100);
+            } else if (item->type == "Model") {
+                iconColor = IM_COL32(150, 150, 200, 100);
+            } else if (item->type == "Script") {
+                iconColor = IM_COL32(200, 150, 150, 100);
+            } else if (item->type == "Scene") {
+                iconColor = IM_COL32(200, 200, 150, 100);
+            } else {
+                iconColor = IM_COL32(100, 150, 200, 100);
+            }
+            
+            ImVec2 previewMin = ImGui::GetMousePos();
+            ImVec2 previewMax = ImVec2(previewMin.x + 40, previewMin.y + 40);
+            ImGui::GetForegroundDrawList()->AddRectFilled(previewMin, previewMax, iconColor, 4.0f);
+            
             ImGui::EndDragDropSource();
         }
     }