mutter/clutter/clutter/clutter-align-constraint.h
Jonas Dreßler 590b9b8c86 clutter/align-constraint: Add pivot-point property
Add a new pivot-point property to the ClutterAlignConstraint, similar to
the pivot point used by ClutterActor, defining the point in the
constraint actor around which the aligning is applied to the actor.

Just as the ClutterActor property, this property is defined using a
GraphenePoint.

By default this property remains set to (-1, -1) and the actor
will always be aligned inside the source actor, preserving the existing
behavior of ClutterAlignConstraint.

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/737
2020-06-10 19:20:32 +00:00

84 lines
3.4 KiB
C

/*
* Clutter.
*
* An OpenGL based 'interactive canvas' library.
*
* Copyright (C) 2010 Intel Corporation.
*
* 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/>.
*
* Author:
* Emmanuele Bassi <ebassi@linux.intel.com>
*/
#ifndef __CLUTTER_ALIGN_CONSTRAINT_H__
#define __CLUTTER_ALIGN_CONSTRAINT_H__
#if !defined(__CLUTTER_H_INSIDE__) && !defined(CLUTTER_COMPILATION)
#error "Only <clutter/clutter.h> can be included directly."
#endif
#include <clutter/clutter-constraint.h>
G_BEGIN_DECLS
#define CLUTTER_TYPE_ALIGN_CONSTRAINT (clutter_align_constraint_get_type ())
#define CLUTTER_ALIGN_CONSTRAINT(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), CLUTTER_TYPE_ALIGN_CONSTRAINT, ClutterAlignConstraint))
#define CLUTTER_IS_ALIGN_CONSTRAINT(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), CLUTTER_TYPE_ALIGN_CONSTRAINT))
/**
* ClutterAlignConstraint:
*
* #ClutterAlignConstraint is an opaque structure
* whose members cannot be directly accesses
*
* Since: 1.4
*/
typedef struct _ClutterAlignConstraint ClutterAlignConstraint;
typedef struct _ClutterAlignConstraintClass ClutterAlignConstraintClass;
CLUTTER_EXPORT
GType clutter_align_constraint_get_type (void) G_GNUC_CONST;
CLUTTER_EXPORT
ClutterConstraint *clutter_align_constraint_new (ClutterActor *source,
ClutterAlignAxis axis,
gfloat factor);
CLUTTER_EXPORT
void clutter_align_constraint_set_source (ClutterAlignConstraint *align,
ClutterActor *source);
CLUTTER_EXPORT
ClutterActor * clutter_align_constraint_get_source (ClutterAlignConstraint *align);
CLUTTER_EXPORT
void clutter_align_constraint_set_align_axis (ClutterAlignConstraint *align,
ClutterAlignAxis axis);
CLUTTER_EXPORT
ClutterAlignAxis clutter_align_constraint_get_align_axis (ClutterAlignConstraint *align);
CLUTTER_EXPORT
void clutter_align_constraint_set_pivot_point (ClutterAlignConstraint *align,
const graphene_point_t *pivot_point);
CLUTTER_EXPORT
void clutter_align_constraint_get_pivot_point (ClutterAlignConstraint *align,
graphene_point_t *pivot_point);
CLUTTER_EXPORT
void clutter_align_constraint_set_factor (ClutterAlignConstraint *align,
gfloat factor);
CLUTTER_EXPORT
gfloat clutter_align_constraint_get_factor (ClutterAlignConstraint *align);
G_END_DECLS
#endif /* __CLUTTER_ALIGN_CONSTRAINT_H__ */