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1 /* $Id: gvc.h,v 1.65 2009/06/03 01:10:53 ellson Exp $ $Revision: 1.65 $ */
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2 /* vim:set shiftwidth=4 ts=8: */
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3
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4 /**********************************************************
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5 * This software is part of the graphviz package *
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6 * http://www.graphviz.org/ *
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7 * *
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8 * Copyright (c) 1994-2004 AT&T Corp. *
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9 * and is licensed under the *
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10 * Common Public License, Version 1.0 *
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11 * by AT&T Corp. *
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12 * *
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13 * Information and Software Systems Research *
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14 * AT&T Research, Florham Park NJ *
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15 **********************************************************/
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16
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17 #ifndef GVC_H
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18 #define GVC_H
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19
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20 #include "types.h"
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21 #include "gvplugin.h"
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22
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23 #ifdef __cplusplus
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24 extern "C" {
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25 #endif
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26
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27 #ifdef GVDLL
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28 #define extern __declspec(dllexport)
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29 #else
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30 #define extern
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31 #endif
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32
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33 /*visual studio*/
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34 #ifdef WIN32_DLL
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35 #ifndef GVC_EXPORTS
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36 #define extern __declspec(dllimport)
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37 #endif
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38 #endif
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39 /*end visual studio*/
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40
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41 /* misc */
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42 /* FIXME - this needs eliminating or renaming */
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43 extern void gvToggle(int);
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44
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45 /* set up a graphviz context */
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46 extern GVC_t *gvNEWcontext(const lt_symlist_t *builtins, int demand_loading);
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47
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48 /* set up a graphviz context - and init graph - retaining old API */
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49 extern GVC_t *gvContext(void);
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50 /* set up a graphviz context - and init graph - with builtins */
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51 extern GVC_t *gvContextPlugins(const lt_symlist_t *builtins, int demand_loading);
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52
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53 /* get information associated with a graphviz context */
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54 extern char **gvcInfo(GVC_t*);
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55 extern char *gvcVersion(GVC_t*);
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56 extern char *gvcBuildDate(GVC_t*);
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57
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58 /* parse command line args - minimally argv[0] sets layout engine */
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59 extern int gvParseArgs(GVC_t *gvc, int argc, char **argv);
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60 extern graph_t *gvNextInputGraph(GVC_t *gvc);
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61 extern graph_t *gvPluginsGraph(GVC_t *gvc);
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62
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63 /* Compute a layout using a specified engine */
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64 extern int gvLayout(GVC_t *gvc, graph_t *g, const char *engine);
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65
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66 /* Compute a layout using layout engine from command line args */
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67 extern int gvLayoutJobs(GVC_t *gvc, graph_t *g);
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68
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69 /* Render layout into string attributes of the graph */
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70 extern void attach_attrs(graph_t *g);
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71
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72 /* Parse an html string */
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73 #ifndef WITH_CGRAPH
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74 extern char *agstrdup_html(char *s);
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75 #endif
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76 extern int aghtmlstr(char *s);
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77
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78 /* Render layout in a specified format to an open FILE */
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79 extern int gvRender(GVC_t *gvc, graph_t *g, const char *format, FILE *out);
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80
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81 /* Render layout in a specified format to an open FILE */
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82 extern int gvRenderFilename(GVC_t *gvc, graph_t *g, const char *format, const char *filename);
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83
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84 /* Render layout in a specified format to an external context */
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85 extern int gvRenderContext(GVC_t *gvc, graph_t *g, const char *format, void *context);
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86
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87 /* Render layout in a specified format to a malloc'ed string */
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88 extern int gvRenderData(GVC_t *gvc, graph_t *g, const char *format, char **result, unsigned int *length);
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89
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90 /* Render layout according to -T and -o options found by gvParseArgs */
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91 extern int gvRenderJobs(GVC_t *gvc, graph_t *g);
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92
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93 /* Clean up layout data structures - layouts are not nestable (yet) */
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94 extern int gvFreeLayout(GVC_t *gvc, graph_t *g);
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95
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96 /* Clean up graphviz context */
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97 extern int gvFreeContext(GVC_t *gvc);
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98
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99 /** Add a library from your user application
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100 * @param gvc Graphviz context to add library to
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101 * @param lib library to add
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102 */
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103 extern void gvAddLibrary(GVC_t *gvc, gvplugin_library_t *lib);
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104
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105 #undef extern
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106
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107 #ifdef __cplusplus
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108 }
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109 #endif
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110
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111 #endif /* GVC_H */
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