From afbffc4fa6d6731b9aa5302ba6de9ce38e896b0c Mon Sep 17 00:00:00 2001
From: stephen finkel <mrsteve0924@verizon.net>
Date: Wed, 4 Nov 2026 02:18:47 -0500
Subject: [PATCH] icons: fall back to StartupWMClass when resolving application
 icons

Some applications report a window class that differs from their desktop
file ID, leaving their window-list icons blank. For example, HexChat
reports "Hexchat" but installs io.github.Hexchat.desktop.

When desktop file ID lookup fails, search installed desktop entries for
a matching StartupWMClass and use the entry's icon.

Signed-off-by: stephen finkel <mrsteve0924@verizon.net>
Assisted-by: ChatGPT:GPT-5.6 Sol
---
 src/util/gtk-utils.cpp | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/src/util/gtk-utils.cpp b/src/util/gtk-utils.cpp
index 88a60c8d0..74e913e69 100644
--- a/src/util/gtk-utils.cpp
+++ b/src/util/gtk-utils.cpp
@@ -5,6 +5,7 @@
 #include <gdk/gdkcairo.h>
 #include <iostream>
 #include <giomm/desktopappinfo.h>
+#include <memory>
 #include "wf-shell-app.hpp"
 
 Glib::RefPtr<Gdk::Pixbuf> load_icon_pixbuf_safe(std::string icon_path, int size)
@@ -115,6 +116,28 @@ Glib::RefPtr<Gio::Icon> get_from_desktop_app_info(std::string app_id)
         }
     }
 
+    /* The window class may differ from the desktop file ID. */
+    for (const auto& info : Gio::AppInfo::get_all())
+    {
+        auto desktop =
+            std::dynamic_pointer_cast<Gio::DesktopAppInfo>(info);
+
+        if (!desktop)
+        {
+            continue;
+        }
+
+        const auto wm_class = desktop->get_startup_wm_class();
+        if (!wm_class.empty() && (wm_class == app_id))
+        {
+            auto icon = desktop->get_icon();
+            if (icon)
+            {
+                return icon;
+            }
+        }
+    }
+
     return {};
 }