Gtk: Update built-in mini-icon.

gtk/meson.build

@@ -454,9 +454,15 @@ gtk_snes9x_ui_cpp = custom_target('sourcify',
                                   output: 'gtk_snes9x_ui.cpp',
                                   command: [sourcify, '@INPUT@', '@OUTPUT@', 'snes9x_ui'])
 
+mini_icon = custom_target('mini_icon',
+                          input: 'data/mini_icon.png',
+                          output: 'mini_icon.cpp',
+                          command: [sourcify, '@INPUT@', '@OUTPUT@', 'mini_icon'])
+
 snes9x_gtk = executable('snes9x-gtk',
                         srcs,
                         gtk_snes9x_ui_cpp,
+                        mini_icon,
                         c_args: args,
                         cpp_args: args,
                         dependencies: deps,

gtk/src/gtk_s9xwindow.cpp

@@ -80,14 +80,20 @@ Snes9xWindow::Snes9xWindow(Snes9xConfig *config)
 
     snes9x_preferences_create(config);
 
-    if (Gtk::IconTheme::get_default()->has_icon("snes9x"))
+    if (0 && Gtk::IconTheme::get_default()->has_icon("snes9x"))
     {
         window->set_default_icon_name("snes9x");
     }
     else
     {
-        auto pixbuf = Gdk::Pixbuf::create_from_inline(sizeof(app_icon), app_icon, false);
-        window->set_default_icon(pixbuf);
+        extern int mini_icon_size;
+        extern unsigned char mini_icon[];
+        auto loader = Gdk::PixbufLoader::create();
+        loader->write(mini_icon, mini_icon_size);
+        loader->close();
+        auto pixbuf = loader->get_pixbuf();
+        if (pixbuf)
+            window->set_default_icon(pixbuf);
     }
 
     drawing_area = get_object<Gtk::DrawingArea>("drawingarea").get();