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/*************************************************************************
* Copyright (c) 2011 AT&T Intellectual Property
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-v10.html
*
* Contributors: Details at https://graphviz.org
*************************************************************************/
#pragma once
#ifdef __cplusplus
extern "C" {
#endif
#include <circogen/nodelist.h>
typedef struct block block_t;
typedef struct {
block_t *first;
block_t *last;
} blocklist_t;
struct block {
Agnode_t *child; /* if non-null, points to node in parent block */
block_t *next; /* sibling block */
Agraph_t *sub_graph; /* nodes and edges in this block */
double radius; /* radius of block and subblocks */
double rad0; /* radius of block */
nodelist_t circle_list; /* ordered list of nodes in block */
blocklist_t children; /* child blocks */
double parent_pos; /* if block has 1 node, angle to place parent */
int flags;
};
extern block_t *mkBlock(Agraph_t *);
extern void freeBlock(block_t * sp);
extern int blockSize(block_t * sp);
extern void initBlocklist(blocklist_t *);
extern void appendBlock(blocklist_t * sp, block_t * sn);
extern void insertBlock(blocklist_t * sp, block_t * sn);
#ifdef DEBUG
extern void printBlocklist(blocklist_t * snl);
#endif
#define CHILD(b) ((b)->child)
#define BLK_PARENT(b) (CHILD(b)? PARENT(CHILD(b)) : 0)
#define BLK_FLAGS(b) ((b)->flags)
#define COALESCED_F (1 << 0)
#define COALESCED(b) (BLK_FLAGS(b)&COALESCED_F)
#define SET_COALESCED(b) (BLK_FLAGS(b) |= COALESCED_F)
#ifdef __cplusplus
}
#endif
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