gtk/gtk/gtkallocatedbitmaskprivate.h
Neil Roberts 6044dfc35b bitmask: Don't allocate memory for small bitmasks
Code taken more or less verbatim from CoglBitmask.
2012-03-01 15:10:36 +01:00

73 lines
3.2 KiB
C

/*
* Copyright © 2011 Red Hat Inc.
*
* 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 2.1 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, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* Authors: Benjamin Otte <otte@gnome.org>
*/
#ifndef __GTK_ALLOCATED_BITMASK_PRIVATE_H__
#define __GTK_ALLOCATED_BITMASK_PRIVATE_H__
#include <glib.h>
G_BEGIN_DECLS
typedef struct _GtkBitmask GtkBitmask;
#define _gtk_bitmask_to_bits(mask) \
(GPOINTER_TO_SIZE (mask) >> ((gsize) 1))
#define _gtk_bitmask_from_bits(bits) \
GSIZE_TO_POINTER ((((gsize) (bits)) << 1) | 1)
#define _gtk_bitmask_is_allocated(mask) \
(!(GPOINTER_TO_SIZE (mask) & 1))
#define GTK_BITMASK_N_DIRECT_BITS (sizeof (gsize) * 8 - 1)
GtkBitmask * _gtk_allocated_bitmask_copy (const GtkBitmask *mask);
void _gtk_allocated_bitmask_free (GtkBitmask *mask);
void _gtk_allocated_bitmask_print (const GtkBitmask *mask,
GString *string);
GtkBitmask * _gtk_allocated_bitmask_intersect (GtkBitmask *mask,
const GtkBitmask *other) G_GNUC_WARN_UNUSED_RESULT;
GtkBitmask * _gtk_allocated_bitmask_union (GtkBitmask *mask,
const GtkBitmask *other) G_GNUC_WARN_UNUSED_RESULT;
GtkBitmask * _gtk_allocated_bitmask_subtract (GtkBitmask *mask,
const GtkBitmask *other) G_GNUC_WARN_UNUSED_RESULT;
gboolean _gtk_allocated_bitmask_get (const GtkBitmask *mask,
guint index_);
GtkBitmask * _gtk_allocated_bitmask_set (GtkBitmask *mask,
guint index_,
gboolean value) G_GNUC_WARN_UNUSED_RESULT;
GtkBitmask * _gtk_allocated_bitmask_invert_range (GtkBitmask *mask,
guint start,
guint end) G_GNUC_WARN_UNUSED_RESULT;
gboolean _gtk_allocated_bitmask_equals (const GtkBitmask *mask,
const GtkBitmask *other);
gboolean _gtk_allocated_bitmask_intersects (const GtkBitmask *mask,
const GtkBitmask *other);
G_END_DECLS
#endif /* __GTK_ALLOCATED_BITMASK_PRIVATE_H__ */