1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
|
/* 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, see <http://www.gnu.org/licenses/>.
*/
/* A Red-Black Tree implementation used specifically by GtkTreeView.
*/
#ifndef __GTK_RBTREE_H__
#define __GTK_RBTREE_H__
#include <glib.h>
G_BEGIN_DECLS
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_INVALID = 1 << 7,
GTK_RBNODE_COLUMN_INVALID = 1 << 8,
GTK_RBNODE_DESCENDANTS_INVALID = 1 << 9,
GTK_RBNODE_NON_COLORS = GTK_RBNODE_IS_PARENT |
GTK_RBNODE_IS_SELECTED |
GTK_RBNODE_IS_PRELIT |
GTK_RBNODE_INVALID |
GTK_RBNODE_COLUMN_INVALID |
GTK_RBNODE_DESCENDANTS_INVALID
} 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;
GtkRBTree *parent_tree;
GtkRBNode *parent_node;
};
struct _GtkRBNode
{
guint flags : 14;
/* count is the number of nodes beneath us, plus 1 for ourselves.
* i.e. node->left->count + node->right->count + 1
*/
gint count;
GtkRBNode *left;
GtkRBNode *right;
GtkRBNode *parent;
/* count the number of total nodes beneath us, including nodes
* of children trees.
* i.e. node->left->count + node->right->count + node->children->root->count + 1
*/
guint total_count;
/* this is the total of sizes of
* node->left, node->right, our own height, and the height
* of all trees in ->children, iff children exists because
* the thing is expanded.
*/
gint offset;
/* Child trees */
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)
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,
gboolean valid);
GtkRBNode *_gtk_rbtree_insert_after (GtkRBTree *tree,
GtkRBNode *node,
gint height,
gboolean valid);
void _gtk_rbtree_remove_node (GtkRBTree *tree,
GtkRBNode *node);
gboolean _gtk_rbtree_is_nil (GtkRBNode *node);
void _gtk_rbtree_reorder (GtkRBTree *tree,
gint *new_order,
gint length);
gboolean _gtk_rbtree_contains (GtkRBTree *tree,
GtkRBTree *potential_child);
GtkRBNode *_gtk_rbtree_find_count (GtkRBTree *tree,
gint count);
void _gtk_rbtree_node_set_height (GtkRBTree *tree,
GtkRBNode *node,
gint height);
void _gtk_rbtree_node_mark_invalid(GtkRBTree *tree,
GtkRBNode *node);
void _gtk_rbtree_node_mark_valid (GtkRBTree *tree,
GtkRBNode *node);
void _gtk_rbtree_column_invalid (GtkRBTree *tree);
void _gtk_rbtree_mark_invalid (GtkRBTree *tree);
void _gtk_rbtree_set_fixed_height (GtkRBTree *tree,
gint height,
gboolean mark_valid);
gint _gtk_rbtree_node_find_offset (GtkRBTree *tree,
GtkRBNode *node);
guint _gtk_rbtree_node_get_index (GtkRBTree *tree,
GtkRBNode *node);
gboolean _gtk_rbtree_find_index (GtkRBTree *tree,
guint index,
GtkRBTree **new_tree,
GtkRBNode **new_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_first (GtkRBTree *tree);
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);
gint _gtk_rbtree_get_depth (GtkRBTree *tree);
G_END_DECLS
#endif /* __GTK_RBTREE_H__ */
|
