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/* gtkrbtree.h
* Copyright (C) 2000 Red Hat, Inc., Jonathan Blandford <jrb@redhat.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef __GTK_RBTREE_H__
#define __GTK_RBTREE_H__
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
#include <glib.h>
typedef enum
{
GTK_RBNODE_BLACK = 1 << 0,
GTK_RBNODE_RED = 1 << 1,
GTK_RBNODE_IS_PARENT = 1 << 2,
GTK_RBNODE_IS_SELECTED = 1 << 3,
GTK_RBNODE_IS_PRELIT = 1 << 4,
GTK_RBNODE_IS_VIEW = 1 << 5
} GtkRBNodeColor;
typedef struct _GtkRBTree GtkRBTree;
typedef struct _GtkRBNode GtkRBNode;
typedef struct _GtkRBTreeView GtkRBTreeView;
typedef void (*GtkRBTreeTraverseFunc) (GtkRBTree *tree,
GtkRBNode *node,
gpointer data);
struct _GtkRBTree
{
GtkRBNode *root;
GtkRBNode *nil;
GtkRBTree *parent_tree;
GtkRBNode *parent_node;
};
struct _GtkRBNode
{
guint flags;
GtkRBNode *left;
GtkRBNode *right;
GtkRBNode *parent;
gint count; /* aggregate number of children we have */
gint offset; /* aggregate of the heights of all our children */
GtkRBTree *children;
};
struct _GtkRBNodeView
{
GtkRBNode parent;
gint offset;
GtkRBTree *children;
};
#define GTK_RBNODE_GET_COLOR(node) (node?(((node->flags>K_RBNODE_RED)==GTK_RBNODE_RED)?GTK_RBNODE_RED:GTK_RBNODE_BLACK):GTK_RBNODE_BLACK)
#define GTK_RBNODE_SET_COLOR(node,color) if((node->flags&color)!=color)node->flags=node->flags^(GTK_RBNODE_RED|GTK_RBNODE_BLACK)
#define GTK_RBNODE_GET_HEIGHT(node) (node->offset-(node->left->offset+node->right->offset+(node->children?node->children->root->offset:0)))
#define GTK_RBNODE_SET_FLAG(node, flag) G_STMT_START{ (node->flags|=flag); }G_STMT_END
#define GTK_RBNODE_UNSET_FLAG(node, flag) G_STMT_START{ (node->flags&=~(flag)); }G_STMT_END
#define GTK_RBNODE_FLAG_SET(node, flag) (node?(((node->flags&flag)==flag)?TRUE:FALSE):FALSE)
void _gtk_rbtree_push_allocator (GAllocator *allocator);
void _gtk_rbtree_pop_allocator (void);
GtkRBTree *_gtk_rbtree_new (void);
void _gtk_rbtree_free (GtkRBTree *tree);
void _gtk_rbtree_remove (GtkRBTree *tree);
void _gtk_rbtree_destroy (GtkRBTree *tree);
GtkRBNode *_gtk_rbtree_insert_before (GtkRBTree *tree,
GtkRBNode *node,
gint height);
GtkRBNode *_gtk_rbtree_insert_after (GtkRBTree *tree,
GtkRBNode *node,
gint height);
void _gtk_rbtree_remove_node (GtkRBTree *tree,
GtkRBNode *node);
GtkRBNode *_gtk_rbtree_find_count (GtkRBTree *tree,
gint count);
void _gtk_rbtree_node_set_height (GtkRBTree *tree,
GtkRBNode *node,
gint height);
gint _gtk_rbtree_node_find_offset (GtkRBTree *tree,
GtkRBNode *node);
gint _gtk_rbtree_find_offset (GtkRBTree *tree,
gint offset,
GtkRBTree **new_tree,
GtkRBNode **new_node);
void _gtk_rbtree_traverse (GtkRBTree *tree,
GtkRBNode *node,
GTraverseType order,
GtkRBTreeTraverseFunc func,
gpointer data);
GtkRBNode *_gtk_rbtree_next (GtkRBTree *tree,
GtkRBNode *node);
GtkRBNode *_gtk_rbtree_prev (GtkRBTree *tree,
GtkRBNode *node);
void _gtk_rbtree_next_full (GtkRBTree *tree,
GtkRBNode *node,
GtkRBTree **new_tree,
GtkRBNode **new_node);
void _gtk_rbtree_prev_full (GtkRBTree *tree,
GtkRBNode *node,
GtkRBTree **new_tree,
GtkRBNode **new_node);
/* This func just checks the integrity of the tree */
/* It will go away later. */
void _gtk_rbtree_test (GtkRBTree *tree);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __GTK_RBTREE_H__ */
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