clutter: Add IM events

These will be used to make IM commands into something that is processed
in a fixed order relative to key events.

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1286

clutter/clutter/clutter-actor.c

@@ -1097,6 +1097,7 @@ static GQuark quark_touch = 0;
 static GQuark quark_touchpad = 0;
 static GQuark quark_proximity = 0;
 static GQuark quark_pad = 0;
+static GQuark quark_im = 0;
 
 G_DEFINE_TYPE_WITH_CODE (ClutterActor,
                          clutter_actor,
@@ -6006,6 +6007,7 @@ clutter_actor_class_init (ClutterActorClass *klass)
   quark_touchpad = g_quark_from_static_string ("touchpad");
   quark_proximity = g_quark_from_static_string ("proximity");
   quark_pad = g_quark_from_static_string ("pad");
+  quark_im = g_quark_from_static_string ("im");
 
   object_class->constructor = clutter_actor_constructor;
   object_class->set_property = clutter_actor_set_property;
@@ -12715,6 +12717,12 @@ clutter_actor_event (ClutterActor       *actor,
       signal_num = -1;
       detail = quark_stage;
       break;
+    case CLUTTER_IM_COMMIT:
+    case CLUTTER_IM_DELETE:
+    case CLUTTER_IM_PREEDIT:
+      signal_num = -1;
+      detail = quark_im;
+      break;
     case CLUTTER_EVENT_LAST:  /* Just keep compiler warnings quiet */
       break;
     }

clutter/clutter/clutter-enums.h

@@ -906,6 +906,9 @@ typedef enum /*< prefix=CLUTTER >*/
   CLUTTER_PAD_BUTTON_RELEASE,
   CLUTTER_PAD_STRIP,
   CLUTTER_PAD_RING,
+  CLUTTER_IM_COMMIT,
+  CLUTTER_IM_DELETE,
+  CLUTTER_IM_PREEDIT,
 
   CLUTTER_EVENT_LAST            /* helper */
 } ClutterEventType;

clutter/clutter/clutter-event.c

@@ -414,6 +414,9 @@ clutter_event_get_position (const ClutterEvent *event,
     case CLUTTER_PAD_BUTTON_RELEASE:
     case CLUTTER_PAD_STRIP:
     case CLUTTER_PAD_RING:
+    case CLUTTER_IM_COMMIT:
+    case CLUTTER_IM_DELETE:
+    case CLUTTER_IM_PREEDIT:
       graphene_point_init (position, 0.f, 0.f);
       break;
 
@@ -487,6 +490,9 @@ clutter_event_set_coords (ClutterEvent *event,
     case CLUTTER_PAD_BUTTON_RELEASE:
     case CLUTTER_PAD_STRIP:
     case CLUTTER_PAD_RING:
+    case CLUTTER_IM_COMMIT:
+    case CLUTTER_IM_DELETE:
+    case CLUTTER_IM_PREEDIT:
       break;
 
     case CLUTTER_ENTER:
@@ -1104,6 +1110,9 @@ clutter_event_set_device (ClutterEvent       *event,
     case CLUTTER_DESTROY_NOTIFY:
     case CLUTTER_CLIENT_MESSAGE:
     case CLUTTER_EVENT_LAST:
+    case CLUTTER_IM_COMMIT:
+    case CLUTTER_IM_DELETE:
+    case CLUTTER_IM_PREEDIT:
       break;
 
     case CLUTTER_ENTER:
@@ -1199,6 +1208,9 @@ clutter_event_get_device (const ClutterEvent *event)
     case CLUTTER_STAGE_STATE:
     case CLUTTER_DESTROY_NOTIFY:
     case CLUTTER_CLIENT_MESSAGE:
+    case CLUTTER_IM_COMMIT:
+    case CLUTTER_IM_DELETE:
+    case CLUTTER_IM_PREEDIT:
     case CLUTTER_EVENT_LAST:
       break;
 
@@ -1407,6 +1419,11 @@ clutter_event_copy (const ClutterEvent *event)
                                           sizeof (gdouble) * n_axes);
       break;
 
+    case CLUTTER_IM_COMMIT:
+    case CLUTTER_IM_PREEDIT:
+      new_event->im.text = g_strdup (event->im.text);
+      break;
+
     default:
       break;
     }
@@ -1462,6 +1479,11 @@ clutter_event_free (ClutterEvent *event)
           g_free (event->touch.axes);
           break;
 
+        case CLUTTER_IM_COMMIT:
+        case CLUTTER_IM_PREEDIT:
+          g_free (event->im.text);
+          break;
+
         default:
           break;
         }
@@ -1756,6 +1778,9 @@ clutter_event_get_axes (const ClutterEvent *event,
     case CLUTTER_PAD_BUTTON_RELEASE:
     case CLUTTER_PAD_STRIP:
     case CLUTTER_PAD_RING:
+    case CLUTTER_IM_COMMIT:
+    case CLUTTER_IM_DELETE:
+    case CLUTTER_IM_PREEDIT:
       break;
     }
 

clutter/clutter/clutter-event.h

@@ -121,6 +121,7 @@ typedef struct _ClutterProximityEvent   ClutterProximityEvent;
 typedef struct _ClutterPadButtonEvent   ClutterPadButtonEvent;
 typedef struct _ClutterPadStripEvent    ClutterPadStripEvent;
 typedef struct _ClutterPadRingEvent     ClutterPadRingEvent;
+typedef struct _ClutterIMEvent          ClutterIMEvent;
 
 /**
  * ClutterAnyEvent:
@@ -544,6 +545,19 @@ struct _ClutterPadRingEvent
   guint32 mode;
 };
 
+struct _ClutterIMEvent
+{
+  ClutterEventType type;
+  uint32_t time;
+  ClutterEventFlags flags;
+  ClutterStage *stage;
+  ClutterActor *source;
+
+  char *text;
+  int32_t offset;
+  uint32_t len;
+};
+
 /**
  * ClutterEvent:
  *
@@ -570,6 +584,7 @@ union _ClutterEvent
   ClutterPadButtonEvent pad_button;
   ClutterPadStripEvent pad_strip;
   ClutterPadRingEvent pad_ring;
+  ClutterIMEvent im;
 };
 
 /**

clutter/clutter/clutter-main.c

@@ -1590,6 +1590,9 @@ _clutter_process_event_details (ClutterActor        *stage,
       case CLUTTER_PAD_BUTTON_RELEASE:
       case CLUTTER_PAD_STRIP:
       case CLUTTER_PAD_RING:
+      case CLUTTER_IM_COMMIT:
+      case CLUTTER_IM_DELETE:
+      case CLUTTER_IM_PREEDIT:
         {
           ClutterActor *actor = NULL;