* Boston, MA 02111-1307, USA.
*/
+/* A Red-Black Tree implementation used specifically by GtkTreeView.
+ */
#ifndef __GTK_RBTREE_H__
#define __GTK_RBTREE_H__
-#ifdef __cplusplus
-extern "C" {
-#endif /* __cplusplus */
-
#include <glib.h>
+
+
+G_BEGIN_DECLS
+
+
typedef enum
{
GTK_RBNODE_BLACK = 1 << 0,
GTK_RBNODE_IS_PARENT = 1 << 2,
GTK_RBNODE_IS_SELECTED = 1 << 3,
GTK_RBNODE_IS_PRELIT = 1 << 4,
- GTK_RBNODE_IS_VIEW = 1 << 5
+ GTK_RBNODE_IS_SEMI_COLLAPSED = 1 << 5,
+ GTK_RBNODE_IS_SEMI_EXPANDED = 1 << 6,
+ 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_IS_SEMI_COLLAPSED |
+ GTK_RBNODE_IS_SEMI_EXPANDED |
+ GTK_RBNODE_INVALID |
+ GTK_RBNODE_COLUMN_INVALID |
+ GTK_RBNODE_DESCENDANTS_INVALID
} GtkRBNodeColor;
typedef struct _GtkRBTree GtkRBTree;
struct _GtkRBNode
{
- guint flags;
+ guint flags : 14;
+
+ /* We keep track of whether the aggregate count of children plus 1
+ * for the node itself comes to an even number. The parity flag is
+ * the total count of children mod 2, where the total count of
+ * children gets computed in the same way that the total offset gets
+ * computed. i.e. not the same as the "count" field below which
+ * doesn't include children. We could replace parity with a
+ * full-size int field here, and then take % 2 to get the parity flag,
+ * but that would use extra memory.
+ */
+
+ guint parity : 1;
+
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;
+ /* count is the number of nodes beneath us, plus 1 for ourselves.
+ * i.e. node->left->count + node->right->count + 1
+ */
+ gint 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_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);
+ gint height,
+ gboolean valid);
GtkRBNode *_gtk_rbtree_insert_after (GtkRBTree *tree,
GtkRBNode *node,
- gint height);
+ gint height,
+ gboolean valid);
void _gtk_rbtree_remove_node (GtkRBTree *tree,
GtkRBNode *node);
+void _gtk_rbtree_reorder (GtkRBTree *tree,
+ gint *new_order,
+ gint length);
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);
+gint _gtk_rbtree_node_find_parity (GtkRBTree *tree,
+ GtkRBNode *node);
gint _gtk_rbtree_find_offset (GtkRBTree *tree,
gint offset,
GtkRBTree **new_tree,
GtkRBTree **new_tree,
GtkRBNode **new_node);
+gint _gtk_rbtree_get_depth (GtkRBTree *tree);
+
+/* This func checks the integrity of the tree */
+#ifdef G_ENABLE_DEBUG
+void _gtk_rbtree_test (const gchar *where,
+ GtkRBTree *tree);
+void _gtk_rbtree_debug_spew (GtkRBTree *tree);
+#endif
-/* This func just checks the integrity of the tree */
-/* It will go away later. */
-void _gtk_rbtree_test (GtkRBTree *tree);
+G_END_DECLS
-#ifdef __cplusplus
-}
-#endif /* __cplusplus */
#endif /* __GTK_RBTREE_H__ */
projects / ~andy / gtk / blobdiff