mutter/src/compositor/meta-cullable.h

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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
* Copyright (C) 2013 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:
* Owen Taylor <otaylor@redhat.com>
* Ray Strode <rstrode@redhat.com>
* Jasper St. Pierre <jstpierre@mecheye.net>
*/
#ifndef __META_CULLABLE_H__
#define __META_CULLABLE_H__
#include <clutter/clutter.h>
G_BEGIN_DECLS
#define META_TYPE_CULLABLE (meta_cullable_get_type ())
#define META_CULLABLE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), META_TYPE_CULLABLE, MetaCullable))
#define META_IS_CULLABLE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), META_TYPE_CULLABLE))
#define META_CULLABLE_GET_IFACE(obj) (G_TYPE_INSTANCE_GET_INTERFACE ((obj), META_TYPE_CULLABLE, MetaCullableInterface))
typedef struct _MetaCullable MetaCullable;
typedef struct _MetaCullableInterface MetaCullableInterface;
struct _MetaCullableInterface
{
GTypeInterface g_iface;
void (* cull_out) (MetaCullable *cullable,
cairo_region_t *unobscured_region,
cairo_region_t *clip_region);
void (* reset_culling) (MetaCullable *cullable);
};
GType meta_cullable_get_type (void);
void meta_cullable_cull_out (MetaCullable *cullable,
cairo_region_t *unobscured_region,
cairo_region_t *clip_region);
void meta_cullable_reset_culling (MetaCullable *cullable);
/* Utility methods for implementations */
void meta_cullable_cull_out_children (MetaCullable *cullable,
cairo_region_t *unobscured_region,
cairo_region_t *clip_region);
void meta_cullable_reset_culling_children (MetaCullable *cullable);
G_END_DECLS
#endif /* __META_CULLABLE_H__ */