/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/*
 * MetaWindowShape
 *
 * Extracted invariant window shape
 *
 * Copyright (C) 2010 Red Hat, Inc.
 *
 * 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, see <http://www.gnu.org/licenses/>.
 */

#pragma once

#include <cairo.h>
#include <glib-object.h>

#include <meta/common.h>

META_EXPORT
GType meta_window_shape_get_type (void) G_GNUC_CONST;

/**
 * MetaWindowShape:
 *
 * Represents a 9-sliced region with borders on all sides that
 * are unscaled, and a constant central region that is scaled.
 *
 * For example, the regions representing two windows that are rounded rectangles,
 * with the same corner radius but different sizes, have the same MetaWindowShape.
 *
 * #MetaWindowShape is designed to be used as part of a hash table key, so has
 * efficient hash and equal functions.
 */
typedef struct _MetaWindowShape MetaWindowShape;

META_EXPORT
MetaWindowShape *  meta_window_shape_new         (cairo_region_t  *region);

META_EXPORT
MetaWindowShape *  meta_window_shape_ref         (MetaWindowShape *shape);

META_EXPORT
void               meta_window_shape_unref       (MetaWindowShape *shape);

META_EXPORT
guint              meta_window_shape_hash        (MetaWindowShape *shape);

META_EXPORT
gboolean           meta_window_shape_equal       (MetaWindowShape *shape_a,
                                                  MetaWindowShape *shape_b);

META_EXPORT
void               meta_window_shape_get_borders (MetaWindowShape *shape,
                                                  int             *border_top,
                                                  int             *border_right,
                                                  int             *border_bottom,
                                                  int             *border_left);

META_EXPORT
cairo_region_t    *meta_window_shape_to_region   (MetaWindowShape *shape,
                                                  int              center_width,
                                                  int              center_height);