From 303174117f01f65b9f4dc3d86a1c9e770ca3a542 Mon Sep 17 00:00:00 2001
From: Nick Fisher <nick.fisher@avinium.com>
Date: Wed, 2 Apr 2025 23:01:13 +0800
Subject: [PATCH] destroy background image on viewer dispose

---
 .../lib/src/viewer/src/ffi/src/thermion_viewer_ffi.dart      | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/thermion_dart/lib/src/viewer/src/ffi/src/thermion_viewer_ffi.dart b/thermion_dart/lib/src/viewer/src/ffi/src/thermion_viewer_ffi.dart
index ee2996e9..f3158bfc 100644
--- a/thermion_dart/lib/src/viewer/src/ffi/src/thermion_viewer_ffi.dart
+++ b/thermion_dart/lib/src/viewer/src/ffi/src/thermion_viewer_ffi.dart
@@ -155,6 +155,10 @@ class ThermionViewerFFI extends ThermionViewer {
   Future dispose() async {
     _disposed = true;
     await setRendering(false);
+
+    await _backgroundImage?.destroy();
+    _backgroundImage = null;
+
     await destroyAssets();
     await destroyLights();
 
@@ -162,6 +166,7 @@ class ThermionViewerFFI extends ThermionViewer {
       await callback.call();
     }
     View_setScene(view.view, nullptr);
+    
     await FilamentApp.instance!.destroyScene(scene);
     await FilamentApp.instance!.destroyView(view);