Gnome moment

Signed-off-by: Slendi <slendi@socopon.com>

src/IconRegistry.cpp

@@ -6,10 +6,10 @@
 #include <cstdlib>
 #include <cstring>
 #include <filesystem>
-#include <print>
 #include <ranges>
 #include <stdexcept>
 
+#include <gio/gio.h>
 #include <lunasvg.h>
 #include <mini/ini.h>
 
@@ -90,16 +90,50 @@ static auto kde_get_theme() -> std::string const
 	return {};
 }
 
+static auto other_get_theme() -> std::string
+{
+	char const *schema_id { "org.gnome.desktop.interface" };
+	char const *key { "icon-theme" };
+
+	GSettingsSchemaSource *src { g_settings_schema_source_get_default() };
+	if (!src)
+		return {};
+
+	GSettingsSchema *schema { g_settings_schema_source_lookup(
+		src, schema_id, TRUE) };
+	if (!schema)
+		return {};
+
+	GSettings *settings { g_settings_new_full(schema, nullptr, nullptr) };
+	g_settings_schema_unref(schema);
+	if (!settings)
+		return {};
+
+	gchar *cstr { g_settings_get_string(settings, key) };
+	g_object_unref(settings);
+	if (!cstr)
+		return {};
+
+	std::string theme { cstr };
+	g_free(cstr);
+	return theme;
+}
+
 static auto get_current_icon_theme() -> std::optional<std::string> const
 {
 	auto de { detect_desktop_environment() };
 	std::transform(de.begin(), de.end(), de.begin(), ::tolower);
 
-	if (de.find("kde") != std::string::npos
-	    || de.find("plasma") != std::string::npos) {
+	if (0
+	    && (de.find("kde") != std::string::npos
+	        || de.find("plasma") != std::string::npos)) {
 		if (auto const t = kde_get_theme(); !t.empty()) {
 			return t;
 		}
+	} else {
+		if (auto const t = other_get_theme(); !t.empty()) {
+			return t;
+		}
 	}
 
 	return std::nullopt;