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diff --git a/clutter/clutter/clutter-pick-stack-private.h b/clutter/clutter/clutter-pick-stack-private.h
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+/*
+ * Copyright (C) 2020 Endless OS Foundation, LLC
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef CLUTTER_PICK_STACK_PRIVATE_H
+#define CLUTTER_PICK_STACK_PRIVATE_H
+
+#include <glib-object.h>
+
+#include "clutter-macros.h"
+#include "clutter-stage-view.h"
+
+G_BEGIN_DECLS
+
+#define CLUTTER_TYPE_PICK_STACK (clutter_pick_stack_get_type ())
+
+typedef struct _ClutterPickStack ClutterPickStack;
+
+GType clutter_pick_stack_get_type (void) G_GNUC_CONST;
+
+ClutterPickStack * clutter_pick_stack_new (CoglContext *context);
+
+ClutterPickStack * clutter_pick_stack_ref (ClutterPickStack *pick_stack);
+
+void clutter_pick_stack_unref (ClutterPickStack *pick_stack);
+
+void clutter_pick_stack_seal (ClutterPickStack *pick_stack);
+
+void clutter_pick_stack_log_pick (ClutterPickStack       *pick_stack,
+                                  const graphene_point_t  vertices[4],
+                                  ClutterActor           *actor);
+
+void clutter_pick_stack_push_clip (ClutterPickStack       *pick_stack,
+                                   const graphene_point_t  vertices[4]);
+
+void clutter_pick_stack_pop_clip (ClutterPickStack *pick_stack);
+
+void clutter_pick_stack_push_transform (ClutterPickStack        *pick_stack,
+                                        const graphene_matrix_t *transform);
+
+void clutter_pick_stack_get_transform (ClutterPickStack  *pick_stack,
+                                       graphene_matrix_t *out_transform);
+
+void clutter_pick_stack_pop_transform (ClutterPickStack *pick_stack);
+
+ClutterActor * clutter_pick_stack_find_actor_at (ClutterPickStack *pick_stack,
+                                                 float             x,
+                                                 float             y);
+
+G_END_DECLS
+
+#endif /* CLUTTER_PICK_STACK_PRIVATE_H */