1
2/* vim:set shiftwidth=4 ts=8: */
3
4/*************************************************************************
5 * Copyright (c) 2011 AT&T Intellectual Property
6 * All rights reserved. This program and the accompanying materials
7 * are made available under the terms of the Eclipse Public License v1.0
8 * which accompanies this distribution, and is available at
9 * http://www.eclipse.org/legal/epl-v10.html
10 *
11 * Contributors: See CVS logs. Details at http://www.graphviz.org/
12 *************************************************************************/
13
14/* Common header used by both clients and plugins */
15
16#ifndef GVCEXT_H
17#define GVCEXT_H
18
19#ifdef __cplusplus
20extern "C" {
21#endif
22
23/*
24 * Define an apis array of name strings using an enumerated api_t as index.
25 * The enumerated type is defined here. The apis array is
26 * inititialized in gvplugin.c by redefining ELEM and reinvoking APIS.
27 */
28#define APIS ELEM(render) ELEM(layout) ELEM(textlayout) ELEM(device) ELEM(loadimage)
29
30/*
31 * Define api_t using names based on the plugin names with API_ prefixed.
32 */
33#define ELEM(x) API_##x,
34 typedef enum { APIS _DUMMY_ELEM_=0 } api_t; /* API_render, API_layout, ... */
35 /* Stupid but true: The sole purpose of "_DUMMY_ELEM_=0"
36 * is to avoid a "," after the last element of the enum
37 * because some compilers when using "-pedantic"
38 * generate an error for about the dangling ","
39 * but only if this header is used from a .cpp file!
40 * Setting it to 0 makes sure that the enumeration
41 * does not define an extra value. (It does however
42 * define _DUMMY_ELEM_ as an enumeration symbol,
43 * but its value duplicates that of the first
44 * symbol in the enumeration - in this case "render".)
45 */
46
47 /* One could wonder why trailing "," in:
48 * int nums[]={1,2,3,};
49 * is OK, but in:
50 * typedef enum {a,b,c,} abc_t;
51 * is not!!!
52 */
53#undef ELEM
54
55 typedef struct GVJ_s GVJ_t;
56 typedef struct GVG_s GVG_t;
57 typedef struct GVC_s GVC_t;
58
59 typedef struct {
60 const char *name;
61 void* address;
62 } lt_symlist_t;
63
64 typedef struct gvplugin_available_s gvplugin_available_t;
65
66/*visual studio*/
67#ifdef _WIN32
68#ifndef GVC_EXPORTS
69__declspec(dllimport) lt_symlist_t lt_preloaded_symbols[];
70#else
71//__declspec(dllexport) lt_symlist_t lt_preloaded_symbols[];
72#if !defined(LTDL_H)
73lt_symlist_t lt_preloaded_symbols[];
74#endif
75#endif
76#endif
77/*end visual studio*/
78
79
80#ifndef _WIN32
81#if defined(GVDLL)
82 __declspec(dllexport) lt_symlist_t lt_preloaded_symbols[];
83#else
84#if !defined(LTDL_H)
85 extern lt_symlist_t lt_preloaded_symbols[];
86#endif
87#endif
88#endif
89
90
91#ifdef __cplusplus
92}
93#endif
94
95
96
97#endif
98