5da0064de7
The Constraint should plug directly into the allocation mechanism, and modify the allocation of the actor to which they are applied to. This is similar to the mechanism used by the Effect class to modify the paint sequence of an actor.
107 lines
4.1 KiB
C
107 lines
4.1 KiB
C
/*
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* Clutter.
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*
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* An OpenGL based 'interactive canvas' library.
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*
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* Copyright (C) 2010 Intel Corporation.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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* Author:
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* Emmanuele Bassi <ebassi@linux.intel.com>
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*/
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#if !defined(__CLUTTER_H_INSIDE__) && !defined(CLUTTER_COMPILATION)
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#error "Only <clutter/clutter.h> can be included directly."
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#endif
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#ifndef __CLUTTER_CONSTRAINT_H__
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#define __CLUTTER_CONSTRAINT_H__
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#include <clutter/clutter-actor-meta.h>
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G_BEGIN_DECLS
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#define CLUTTER_TYPE_CONSTRAINT (clutter_constraint_get_type ())
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#define CLUTTER_CONSTRAINT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), CLUTTER_TYPE_CONSTRAINT, ClutterConstraint))
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#define CLUTTER_IS_CONSTRAINT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CLUTTER_TYPE_CONSTRAINT))
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#define CLUTTER_CONSTRAINT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), CLUTTER_TYPE_CONSTRAINT, ClutterConstraintClass))
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#define CLUTTER_IS_CONSTRAINT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), CLUTTER_TYPE_CONSTRAINT))
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#define CLUTTER_CONSTRAINT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), CLUTTER_TYPE_CONSTRAINT, ClutterConstraintClass))
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typedef struct _ClutterConstraintClass ClutterConstraintClass;
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/**
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* ClutterConstraint:
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*
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* The <structname>ClutterConstraint</structname> structure contains only
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* private data and should be accessed using the provided API
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*
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* Since: 1.4
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*/
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struct _ClutterConstraint
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{
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/*< private >*/
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ClutterActorMeta parent_instance;
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};
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/**
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* ClutterConstraintClass:
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*
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* The <structname>ClutterConstraintClass</structname> structure contains
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* only private data
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*
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* Since: 1.4
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*/
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struct _ClutterConstraintClass
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{
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/*< private >*/
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ClutterActorMetaClass parent_class;
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void (* update_allocation) (ClutterConstraint *constraint,
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ClutterActor *actor,
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ClutterActorBox *allocation);
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/*< private >*/
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void (* _clutter_constraint1) (void);
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void (* _clutter_constraint2) (void);
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void (* _clutter_constraint3) (void);
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void (* _clutter_constraint4) (void);
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void (* _clutter_constraint5) (void);
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void (* _clutter_constraint6) (void);
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void (* _clutter_constraint7) (void);
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void (* _clutter_constraint8) (void);
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};
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GType clutter_constraint_get_type (void) G_GNUC_CONST;
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/* ClutterActor API */
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void clutter_actor_add_constraint (ClutterActor *self,
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ClutterConstraint *constraint);
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void clutter_actor_add_constraint_with_name (ClutterActor *self,
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const gchar *name,
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ClutterConstraint *constraint);
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void clutter_actor_remove_constraint (ClutterActor *self,
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ClutterConstraint *constraint);
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void clutter_actor_remove_constraint_by_name (ClutterActor *self,
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const gchar *name);
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GList * clutter_actor_get_constraints (ClutterActor *self);
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ClutterConstraint *clutter_actor_get_constraint (ClutterActor *self,
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const gchar *name);
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void clutter_actor_clear_constraints (ClutterActor *self);
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G_END_DECLS
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#endif /* __CLUTTER_CONSTRAINT_H__ */
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