clutter: Move scroll valuator accounting to backends/x11

This is just used there. Another X11 detail that got open coded.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1403>

5 files changed, 122 insertions, 125 deletions

diff --git a/clutter/clutter/clutter-input-device-private.h b/clutter/clutter/clutter-input-device-private.h
index caed7cbe7..cb8fd8621 100644
--- a/clutter/clutter/clutter-input-device-private.h
+++ b/clutter/clutter/clutter-input-device-private.h
@@ -32,16 +32,6 @@
 
 G_BEGIN_DECLS
 
-typedef struct _ClutterScrollInfo
-{
-  guint axis_id;
-  ClutterScrollDirection direction;
-  double increment;
-
-  double last_value;
-  guint last_value_valid : 1;
-} ClutterScrollInfo;
-
 typedef struct _ClutterPtrA11yData
 {
   int n_btn_pressed;
@@ -98,8 +88,6 @@ struct _ClutterInputDevice
   uint32_t previous_time;
   int previous_button_number;
 
-  GArray *scroll_info;
-
   char *vendor_id;
   char *product_id;
   char *node_path;
@@ -129,20 +117,6 @@ void _clutter_input_device_remove_event_sequence (ClutterInputDevice *device,
                                                   ClutterEvent       *event);
 
 CLUTTER_EXPORT
-void _clutter_input_device_add_scroll_info (ClutterInputDevice     *device,
-                                            guint                   index_,
-                                            ClutterScrollDirection  direction,
-                                            gdouble                 increment);
-CLUTTER_EXPORT
-gboolean _clutter_input_device_get_scroll_delta (ClutterInputDevice     *device,
-                                                 guint                   index_,
-                                                 gdouble                 value,
-                                                 ClutterScrollDirection *direction_p,
-                                                 gdouble                *delta_p);
-CLUTTER_EXPORT
-void _clutter_input_device_reset_scroll_info (ClutterInputDevice *device);
-
-CLUTTER_EXPORT
 void clutter_input_device_add_tool (ClutterInputDevice     *device,
                                     ClutterInputDeviceTool *tool);
 
diff --git a/clutter/clutter/clutter-input-device.c b/clutter/clutter/clutter-input-device.c
index 4a7b4c85c..47888c97d 100644
--- a/clutter/clutter/clutter-input-device.c
+++ b/clutter/clutter/clutter-input-device.c
@@ -95,7 +95,6 @@ clutter_input_device_dispose (GObject *gobject)
   if (device->accessibility_virtual_device)
     g_clear_object (&device->accessibility_virtual_device);
 
-  g_clear_pointer (&device->scroll_info, g_array_unref);
   g_clear_pointer (&device->touch_sequence_actors, g_hash_table_unref);
 
   if (device->cursor_actor)
@@ -848,100 +847,6 @@ clutter_input_device_keycode_to_evdev (ClutterInputDevice *device,
                                            evdev_keycode);
 }
 
-void
-_clutter_input_device_add_scroll_info (ClutterInputDevice     *device,
-                                       guint                   index_,
-                                       ClutterScrollDirection  direction,
-                                       gdouble                 increment)
-{
-  ClutterScrollInfo info;
-
-  g_return_if_fail (CLUTTER_IS_INPUT_DEVICE (device));
-
-  info.axis_id = index_;
-  info.direction = direction;
-  info.increment = increment;
-  info.last_value_valid = FALSE;
-
-  if (device->scroll_info == NULL)
-    {
-      device->scroll_info = g_array_new (FALSE,
-                                         FALSE,
-                                         sizeof (ClutterScrollInfo));
-    }
-
-  g_array_append_val (device->scroll_info, info);
-}
-
-gboolean
-_clutter_input_device_get_scroll_delta (ClutterInputDevice     *device,
-                                        guint                   index_,
-                                        gdouble                 value,
-                                        ClutterScrollDirection *direction_p,
-                                        gdouble                *delta_p)
-{
-  guint i;
-
-  g_return_val_if_fail (CLUTTER_IS_INPUT_DEVICE (device), FALSE);
-
-  if (device->scroll_info == NULL)
-    return FALSE;
-
-  for (i = 0; i < device->scroll_info->len; i++)
-    {
-      ClutterScrollInfo *info = &g_array_index (device->scroll_info,
-                                                ClutterScrollInfo,
-                                                i);
-
-      if (info->axis_id == index_)
-        {
-          if (direction_p != NULL)
-            *direction_p = info->direction;
-
-          if (delta_p != NULL)
-            *delta_p = 0.0;
-
-          if (info->last_value_valid)
-            {
-              if (delta_p != NULL)
-                {
-                  *delta_p = (value - info->last_value)
-                           / info->increment;
-                }
-
-              info->last_value = value;
-            }
-          else
-            {
-              info->last_value = value;
-              info->last_value_valid = TRUE;
-            }
-
-          return TRUE;
-        }
-    }
-
-  return FALSE;
-}
-
-void
-_clutter_input_device_reset_scroll_info (ClutterInputDevice *device)
-{
-  guint i;
-
-  if (device->scroll_info == NULL)
-    return;
-
-  for (i = 0; i < device->scroll_info->len; i++)
-    {
-      ClutterScrollInfo *info = &g_array_index (device->scroll_info,
-                                                ClutterScrollInfo,
-                                                i);
-
-      info->last_value_valid = FALSE;
-    }
-}
-
 static void
 on_grab_actor_destroy (ClutterActor       *actor,
                        ClutterInputDevice *device)
diff --git a/src/backends/x11/meta-input-device-x11.c b/src/backends/x11/meta-input-device-x11.c
index 4fdd3b61b..3d82cce50 100644
--- a/src/backends/x11/meta-input-device-x11.c
+++ b/src/backends/x11/meta-input-device-x11.c
@@ -38,6 +38,7 @@ struct _MetaInputDeviceX11
   float current_y;
 
   GArray *axes;
+  GArray *scroll_info;
 
 #ifdef HAVE_LIBWACOM
   GArray *group_modes;
@@ -57,6 +58,16 @@ typedef struct _MetaX11AxisInfo
   double resolution;
 } MetaX11AxisInfo;
 
+typedef struct _MetaX11ScrollInfo
+{
+  guint axis_id;
+  ClutterScrollDirection direction;
+  double increment;
+
+  double last_value;
+  guint last_value_valid : 1;
+} MetaX11ScrollInfo;
+
 struct _MetaInputDeviceX11Class
 {
   ClutterInputDeviceClass device_class;
@@ -149,6 +160,7 @@ meta_input_device_x11_finalize (GObject *object)
   MetaInputDeviceX11 *device_xi2 = META_INPUT_DEVICE_X11 (object);
 
   g_clear_pointer (&device_xi2->axes, g_array_unref);
+  g_clear_pointer (&device_xi2->scroll_info, g_array_unref);
 
 #ifdef HAVE_LIBWACOM
   if (device_xi2->group_modes)
@@ -594,6 +606,101 @@ meta_input_device_x11_get_n_axes (ClutterInputDevice *device)
   return device_x11->axes->len;
 }
 
+void
+meta_input_device_x11_add_scroll_info (ClutterInputDevice     *device,
+                                       int                     idx,
+                                       ClutterScrollDirection  direction,
+                                       double                  increment)
+{
+  MetaInputDeviceX11 *device_x11 = META_INPUT_DEVICE_X11 (device);
+  MetaX11ScrollInfo info;
+
+  g_return_if_fail (CLUTTER_IS_INPUT_DEVICE (device));
+
+  info.axis_id = idx;
+  info.direction = direction;
+  info.increment = increment;
+  info.last_value_valid = FALSE;
+
+  if (device_x11->scroll_info == NULL)
+    {
+      device_x11->scroll_info = g_array_new (FALSE,
+                                             FALSE,
+                                             sizeof (MetaX11ScrollInfo));
+    }
+
+  g_array_append_val (device_x11->scroll_info, info);
+}
+
+gboolean
+meta_input_device_x11_get_scroll_delta (ClutterInputDevice     *device,
+                                        int                     idx,
+                                        double                  value,
+                                        ClutterScrollDirection *direction_p,
+                                        double                 *delta_p)
+{
+  MetaInputDeviceX11 *device_x11 = META_INPUT_DEVICE_X11 (device);
+  int i;
+
+  if (device_x11->scroll_info == NULL)
+    return FALSE;
+
+  for (i = 0; i < device_x11->scroll_info->len; i++)
+    {
+      MetaX11ScrollInfo *info = &g_array_index (device_x11->scroll_info,
+                                                MetaX11ScrollInfo,
+                                                i);
+
+      if (info->axis_id == idx)
+        {
+          if (direction_p != NULL)
+            *direction_p = info->direction;
+
+          if (delta_p != NULL)
+            *delta_p = 0.0;
+
+          if (info->last_value_valid)
+            {
+              if (delta_p != NULL)
+                {
+                  *delta_p = (value - info->last_value)
+                           / info->increment;
+                }
+
+              info->last_value = value;
+            }
+          else
+            {
+              info->last_value = value;
+              info->last_value_valid = TRUE;
+            }
+
+          return TRUE;
+        }
+    }
+
+  return FALSE;
+}
+
+void
+meta_input_device_x11_reset_scroll_info (ClutterInputDevice *device)
+{
+  MetaInputDeviceX11 *device_x11 = META_INPUT_DEVICE_X11 (device);
+  int i;
+
+  if (device_x11->scroll_info == NULL)
+    return;
+
+  for (i = 0; i < device_x11->scroll_info->len; i++)
+    {
+      MetaX11ScrollInfo *info = &g_array_index (device_x11->scroll_info,
+                                                MetaX11ScrollInfo,
+                                                i);
+
+      info->last_value_valid = FALSE;
+    }
+}
+
 #ifdef HAVE_LIBWACOM
 uint32_t
 meta_input_device_x11_get_pad_group_mode (ClutterInputDevice *device,
diff --git a/src/backends/x11/meta-input-device-x11.h b/src/backends/x11/meta-input-device-x11.h
index 19f1efcdd..66e03f581 100644
--- a/src/backends/x11/meta-input-device-x11.h
+++ b/src/backends/x11/meta-input-device-x11.h
@@ -86,6 +86,17 @@ gboolean meta_input_device_x11_translate_axis (ClutterInputDevice *device,
                                                double              value,
                                                double             *axis_value);
 
+void meta_input_device_x11_add_scroll_info (ClutterInputDevice     *device,
+                                            int                     idx,
+                                            ClutterScrollDirection  direction,
+                                            double                  increment);
+gboolean meta_input_device_x11_get_scroll_delta (ClutterInputDevice     *device,
+                                                 int                     idx,
+                                                 gdouble                 value,
+                                                 ClutterScrollDirection *direction_p,
+                                                 double                 *delta_p);
+void meta_input_device_x11_reset_scroll_info (ClutterInputDevice *device);
+
 G_END_DECLS
 
 #endif /* META_INPUT_DEVICE_X11_H */
diff --git a/src/backends/x11/meta-seat-x11.c b/src/backends/x11/meta-seat-x11.c
index 1983c93c4..5a889b905 100644
--- a/src/backends/x11/meta-seat-x11.c
+++ b/src/backends/x11/meta-seat-x11.c
@@ -197,7 +197,7 @@ translate_device_classes (Display             *xdisplay,
                      : "horizontal",
                      scroll_info->increment);
 
-            _clutter_input_device_add_scroll_info (device,
+            meta_input_device_x11_add_scroll_info (device,
                                                    scroll_info->number,
                                                    direction,
                                                    scroll_info->increment);
@@ -1195,7 +1195,7 @@ scroll_valuators_changed (ClutterInputDevice *device,
       if (!XIMaskIsSet (valuators->mask, i))
         continue;
 
-      if (_clutter_input_device_get_scroll_delta (device, i,
+      if (meta_input_device_x11_get_scroll_delta (device, i,
                                                   values[n_val],
                                                   &direction,
                                                   &delta))
@@ -1794,7 +1794,7 @@ meta_seat_x11_translate_event (MetaSeatX11  *seat,
           }
 
         if (source_device)
-          _clutter_input_device_reset_scroll_info (source_device);
+          meta_input_device_x11_reset_scroll_info (source_device);
       }
       retval = FALSE;
       break;
@@ -2308,7 +2308,7 @@ meta_seat_x11_translate_event (MetaSeatX11  *seat,
             translate_coords (stage_x11, xev->event_x, xev->event_y, &event->crossing.x, &event->crossing.y);
           }
 
-        _clutter_input_device_reset_scroll_info (source_device);
+        meta_input_device_x11_reset_scroll_info (source_device);
 
         clutter_event_set_device (event, device);
         clutter_event_set_source_device (event, source_device);