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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright (C) 2015 Red Hat
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
* 02111-1307, USA.
*
* Written by:
* Jonas Ådahl <jadahl@gmail.com>
*/
#ifndef META_POINTER_CONSTRAINT_H
#define META_POINTER_CONSTRAINT_H
#include <glib-object.h>
#include "clutter/clutter.h"
G_BEGIN_DECLS
#define META_TYPE_POINTER_CONSTRAINT (meta_pointer_constraint_get_type ())
G_DECLARE_FINAL_TYPE (MetaPointerConstraint, meta_pointer_constraint,
META, POINTER_CONSTRAINT, GObject);
MetaPointerConstraint * meta_pointer_constraint_new (const cairo_region_t *region,
double min_edge_distance);
cairo_region_t * meta_pointer_constraint_get_region (MetaPointerConstraint *constraint);
double meta_pointer_constraint_get_min_edge_distance (MetaPointerConstraint *constraint);
#define META_TYPE_POINTER_CONSTRAINT_IMPL (meta_pointer_constraint_impl_get_type ())
G_DECLARE_DERIVABLE_TYPE (MetaPointerConstraintImpl, meta_pointer_constraint_impl,
META, POINTER_CONSTRAINT_IMPL, GObject);
/**
* MetaPointerConstraintImplClass:
* @constrain: the virtual function pointer for
* meta_pointer_constraint_impl_constrain().
*/
struct _MetaPointerConstraintImplClass
{
GObjectClass parent_class;
void (* constrain) (MetaPointerConstraintImpl *constraint_impl,
ClutterInputDevice *device,
uint32_t time,
float prev_x,
float prev_y,
float *x,
float *y);
void (* ensure_constrained) (MetaPointerConstraintImpl *constraint_impl,
ClutterInputDevice *device);
};
void meta_pointer_constraint_impl_constrain (MetaPointerConstraintImpl *constraint_impl,
ClutterInputDevice *device,
uint32_t time,
float prev_x,
float prev_y,
float *x,
float *y);
void meta_pointer_constraint_impl_ensure_constrained (MetaPointerConstraintImpl *constraint_impl,
ClutterInputDevice *device);
G_END_DECLS
#endif /* META_POINTER_CONSTRAINT_H */
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