[mutter/wip/carlosg/capabilities-and-dimensions: 4/11] backends: Use capabilities to figure out trackballs in MetaInputSettings

[Carlos Garnacho <carlosg src gnome org>]

commit f1f87b17a28d661557cbd8cae1f861723e0f89ef
Author: Carlos Garnacho <carlosg gnome org>
Date:   Tue Sep 6 10:20:21 2022 +0200

    backends: Use capabilities to figure out trackballs in MetaInputSettings
    
    Port these configuration methods to use capabilities, instead of using the
    internal vfunc.

 src/backends/meta-input-settings.c | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)
---
diff --git a/src/backends/meta-input-settings.c b/src/backends/meta-input-settings.c
index 7d03d7182c..1e00c6e475 100644
--- a/src/backends/meta-input-settings.c
+++ b/src/backends/meta-input-settings.c
@@ -930,12 +930,18 @@ update_trackball_scroll_button (MetaInputSettings  *input_settings,
   MetaInputSettingsPrivate *priv;
   guint button;
   gboolean button_lock;
+  ClutterInputCapabilities caps;
 
   priv = meta_input_settings_get_instance_private (input_settings);
   input_settings_class = META_INPUT_SETTINGS_GET_CLASS (input_settings);
 
-  if (device && !input_settings_class->is_trackball_device (input_settings, device))
-    return;
+  if (device)
+    {
+      caps = clutter_input_device_get_capabilities (device);
+
+      if ((caps & CLUTTER_INPUT_CAPABILITY_TRACKBALL) == 0)
+        return;
+    }
 
   /* This key is 'i' in the schema but it also specifies a minimum
    * range of 0 so the cast here is safe. */
@@ -953,8 +959,9 @@ update_trackball_scroll_button (MetaInputSettings  *input_settings,
       for (l = priv->devices; l; l = l->next)
         {
           device = l->data;
+          caps = clutter_input_device_get_capabilities (device);
 
-          if (input_settings_class->is_trackball_device (input_settings, device))
+          if ((caps & CLUTTER_INPUT_CAPABILITY_TRACKBALL) != 0)
             input_settings_class->set_scroll_button (input_settings, device, button, button_lock);
         }
     }