wayland: Offer wayland-specific method to set pad actions feedback

The wayland tablet protocol allows notifying the compositor with
descriptions of the actions performed by each tablet element. This
API call allows to hook up in to this wayland-specific feature.

https://bugzilla.gnome.org/show_bug.cgi?id=770026

diff --git a/gdk/wayland/gdkdevice-wayland.c b/gdk/wayland/gdkdevice-wayland.c
index 70b95d47f467eaf7a7d4abdc0e7dceefb5721349..ee037df59b13992d4cde3d18abf7d1bcaf9f92eb 100644 (file)
--- a/gdk/wayland/gdkdevice-wayland.c
+++ b/gdk/wayland/gdkdevice-wayland.c
@@ -5202,3 +5202,65 @@ gdk_wayland_device_get_node_path (GdkDevice *device)
 
   return NULL;
 }
+
+/**
+ * gdk_wayland_device_pad_set_feedback:
+ * @device: a %GDK_SOURCE_TABLET_PAD device
+ * @feature: Feature to set the feedback label for
+ * @feature_idx: 0-indexed index of the feature to set the feedback label for
+ * @label: Feedback label
+ *
+ * Sets the feedback label for the given feature/index. This may be used by the
+ * compositor to provide user feedback of the actions available/performed.
+ **/
+void
+gdk_wayland_device_pad_set_feedback (GdkDevice           *device,
+                                     GdkDevicePadFeature  feature,
+                                     guint                feature_idx,
+                                     const gchar         *label)
+{
+  GdkWaylandTabletPadData *pad;
+  GdkWaylandTabletPadGroupData *group;
+  GdkSeat *seat;
+
+  seat = gdk_device_get_seat (device);
+  pad = gdk_wayland_device_manager_find_pad (GDK_WAYLAND_SEAT (seat),
+                                             device);
+  if (!pad)
+    return;
+
+  if (feature == GDK_DEVICE_PAD_FEATURE_BUTTON)
+    {
+      group = tablet_pad_lookup_button_group (pad, feature_idx);
+      if (!group)
+        return;
+
+      zwp_tablet_pad_v2_set_feedback (pad->wp_tablet_pad, feature_idx, label,
+                                      group->mode_switch_serial);
+    }
+  else if (feature == GDK_DEVICE_PAD_FEATURE_RING)
+    {
+      struct zwp_tablet_pad_ring_v2 *wp_pad_ring;
+
+      wp_pad_ring = g_list_nth_data (pad->rings, feature_idx);
+      if (!wp_pad_ring)
+        return;
+
+      group = zwp_tablet_pad_ring_v2_get_user_data (wp_pad_ring);
+      zwp_tablet_pad_ring_v2_set_feedback (wp_pad_ring, label,
+                                           group->mode_switch_serial);
+
+    }
+  else if (feature == GDK_DEVICE_PAD_FEATURE_STRIP)
+    {
+      struct zwp_tablet_pad_strip_v2 *wp_pad_strip;
+
+      wp_pad_strip = g_list_nth_data (pad->strips, feature_idx);
+      if (!wp_pad_strip)
+        return;
+
+      group = zwp_tablet_pad_strip_v2_get_user_data (wp_pad_strip);
+      zwp_tablet_pad_strip_v2_set_feedback (wp_pad_strip, label,
+                                            group->mode_switch_serial);
+    }
+}

diff --git a/gdk/wayland/gdkwaylanddevice.h b/gdk/wayland/gdkwaylanddevice.h
index b02ceeb8e8f62b46cb700b065552f42b699e15ab..e7a3b9ab0c288bb1c54af8785a8360578bbf8aee 100644 (file)
--- a/gdk/wayland/gdkwaylanddevice.h
+++ b/gdk/wayland/gdkwaylanddevice.h
@@ -58,6 +58,12 @@ struct wl_seat      *gdk_wayland_seat_get_wl_seat           (GdkSeat   *seat);
 GDK_AVAILABLE_IN_3_22
 const gchar         *gdk_wayland_device_get_node_path       (GdkDevice *device);
 
+GDK_AVAILABLE_IN_3_22
+void                 gdk_wayland_device_pad_set_feedback (GdkDevice           *device,
+                                                          GdkDevicePadFeature  element,
+                                                          guint                idx,
+                                                          const gchar         *label);
+
 G_END_DECLS
 
 #endif /* __GDK_WAYLAND_DEVICE_H__ */