[mutter/wip/carlosg/input-thread: 14/96] backends: Move device mapping check into backend

[Carlos Garnacho <carlosg src gnome org>]

commit c4f976fbc432a92b5700ca535512e80c954700e9
Author: Carlos Garnacho <carlosg gnome org>
Date:   Wed May 6 20:27:14 2020 +0200

    backends: Move device mapping check into backend
    
    Make the upper parts agnostic about the device being relative in
    order to apply the display mapping. Just make the low level bits
    resort to the identity matrix for those.
    
    https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1403

 src/backends/meta-input-settings.c               | 29 ++++++++++--------------
 src/backends/native/meta-input-settings-native.c | 15 ++++++++++--
 2 files changed, 25 insertions(+), 19 deletions(-)
---
diff --git a/src/backends/meta-input-settings.c b/src/backends/meta-input-settings.c
index 6704888cbb..83e953171e 100644
--- a/src/backends/meta-input-settings.c
+++ b/src/backends/meta-input-settings.c
@@ -1078,24 +1078,19 @@ update_device_display (MetaInputSettings  *input_settings,
   priv = meta_input_settings_get_instance_private (input_settings);
   input_settings_class = META_INPUT_SETTINGS_GET_CLASS (input_settings);
 
-  /* If mapping is relative, the device can move on all displays */
-  if (clutter_input_device_get_device_type (device) == CLUTTER_TOUCHSCREEN_DEVICE ||
-      clutter_input_device_get_mapping_mode (device) ==
-      CLUTTER_INPUT_DEVICE_MAPPING_ABSOLUTE)
+  meta_input_settings_find_monitor (input_settings, settings, device,
+                                    &monitor, &logical_monitor);
+  if (monitor)
     {
-      meta_input_settings_find_monitor (input_settings, settings, device,
-                                        &monitor, &logical_monitor);
-      if (monitor)
-        {
-          meta_input_mapper_remove_device (priv->input_mapper, device);
-          meta_monitor_manager_get_monitor_matrix (priv->monitor_manager,
-                                                   monitor, logical_monitor, matrix);
-        }
-      else
-        {
-          if (meta_input_settings_delegate_on_mapper (input_settings, device))
-            return;
-        }
+      meta_input_mapper_remove_device (priv->input_mapper, device);
+      meta_monitor_manager_get_monitor_matrix (priv->monitor_manager,
+                                               monitor, logical_monitor,
+                                               matrix);
+    }
+  else
+    {
+      if (meta_input_settings_delegate_on_mapper (input_settings, device))
+        return;
     }
 
   input_settings_class->set_matrix (input_settings, device, matrix);
diff --git a/src/backends/native/meta-input-settings-native.c 
b/src/backends/native/meta-input-settings-native.c
index 7d25f4a5b5..46c644c834 100644
--- a/src/backends/native/meta-input-settings-native.c
+++ b/src/backends/native/meta-input-settings-native.c
@@ -70,8 +70,19 @@ meta_input_settings_native_set_matrix (MetaInputSettings  *settings,
 {
   cairo_matrix_t dev_matrix;
 
-  cairo_matrix_init (&dev_matrix, matrix[0], matrix[3], matrix[1],
-                     matrix[4], matrix[2], matrix[5]);
+  if (clutter_input_device_get_device_type (device) ==
+      CLUTTER_TOUCHSCREEN_DEVICE ||
+      clutter_input_device_get_mapping_mode (device) ==
+      CLUTTER_INPUT_DEVICE_MAPPING_ABSOLUTE)
+    {
+      cairo_matrix_init (&dev_matrix, matrix[0], matrix[3], matrix[1],
+                         matrix[4], matrix[2], matrix[5]);
+    }
+  else
+    {
+      cairo_matrix_init_identity (&dev_matrix);
+    }
+
   g_object_set (device, "device-matrix", &dev_matrix, NULL);
 }