/misc/src/release/graphviz-2.18-1/src/graphviz-2.18/lib/circogen/block.h

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00001 /* $Id: block.h,v 1.1.1.1 2004/12/23 04:04:28 ellson Exp $ $Revision: 1.1.1.1 $ */
00002 /* vim:set shiftwidth=4 ts=8: */
00003 
00004 /**********************************************************
00005 *      This software is part of the graphviz package      *
00006 *                http://www.graphviz.org/                 *
00007 *                                                         *
00008 *            Copyright (c) 1994-2004 AT&T Corp.           *
00009 *                and is licensed under the                *
00010 *            Common Public License, Version 1.0           *
00011 *                      by AT&T Corp.                      *
00012 *                                                         *
00013 *        Information and Software Systems Research        *
00014 *              AT&T Research, Florham Park NJ             *
00015 **********************************************************/
00016 
00017 #ifdef __cplusplus
00018 extern "C" {
00019 #endif
00020 
00021 #ifndef BLOCK_H
00022 #define BLOCK_H
00023 
00024 #include  <nodelist.h>
00025 
00026     typedef struct block block_t;
00027 
00028     typedef struct {
00029         block_t *first;
00030         block_t *last;
00031     } blocklist_t;
00032 
00033     struct block {
00034         Agnode_t *child;        /* if non-null, points to node in parent block */
00035         block_t *next;          /* sibling block */
00036         Agraph_t *sub_graph;    /* nodes and edges in this block */
00037         double radius;          /* radius of block and subblocks */
00038         double rad0;            /* radius of block */
00039         nodelist_t *circle_list;        /* ordered list of nodes in block */
00040         blocklist_t children;   /* child blocks */
00041         double parent_pos;      /* if block has 1 node, angle to place parent */
00042         int flags;
00043     };
00044 
00045     extern block_t *mkBlock(Agraph_t *);
00046     extern void freeBlock(block_t * sp);
00047 
00048     extern void initBlocklist(blocklist_t *);
00049     extern void appendBlock(blocklist_t * sp, block_t * sn);
00050     extern void insertBlock(blocklist_t * sp, block_t * sn);
00051 /* extern void freeBlocklist (blocklist_t* sp); */
00052 
00053 #ifdef DEBUG
00054     extern void printBlocklist(blocklist_t * snl);
00055 #endif
00056 
00057 #define CHILD(b) ((b)->child)
00058 #define BLK_PARENT(b) (CHILD(b)? PARENT(CHILD(b)) : 0)
00059 #define BLK_FLAGS(b) ((b)->flags)
00060 
00061 #define COALESCED_F   (1 << 0)
00062 #define COALESCED(b) (BLK_FLAGS(b)&COALESCED_F)
00063 #define SET_COALESCED(b) (BLK_FLAGS(b) |= COALESCED_F)
00064 
00065 #endif
00066 
00067 #ifdef __cplusplus
00068 }
00069 #endif

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