1 /*
2 * Copyright (c) 2005, 2020, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 #ifdef HEADLESS
27 #error This file should not be included in headless library
28 #endif
29
30 #include <dlfcn.h>
31 #include <stdlib.h>
32 #include "jvm_md.h"
33 #include "gtk_interface.h"
34
35 GtkApi* gtk2_load(JNIEnv *env, const char* lib_name);
36 GtkApi* gtk3_load(JNIEnv *env, const char* lib_name);
37
38 gboolean gtk2_check(const char* lib_name, gboolean load);
39 gboolean gtk3_check(const char* lib_name, gboolean load);
40
41 GtkApi *gtk;
42
43 typedef struct {
44 GtkVersion version;
45 const char* name;
46 const char* vname;
47 GtkApi* (*load)(JNIEnv *env, const char* lib_name);
48 gboolean (*check)(const char* lib_name, gboolean load);
49 } GtkLib;
50
51 static GtkLib gtk_libs[] = {
52 {
53 GTK_3,
54 JNI_LIB_NAME("gtk-3"),
55 VERSIONED_JNI_LIB_NAME("gtk-3", "0"),
56 >k3_load,
57 >k3_check
58 },
59 {
60 GTK_2,
61 JNI_LIB_NAME("gtk-x11-2.0"),
62 VERSIONED_JNI_LIB_NAME("gtk-x11-2.0", "0"),
63 >k2_load,
64 >k2_check
65 }
66 };
67
get_libs_order(GtkVersion version)68 static GtkLib** get_libs_order(GtkVersion version) {
69 static GtkLib** load_order;
70 static int n_libs = 0;
71 if (!n_libs) {
72 n_libs = sizeof(gtk_libs) / sizeof(GtkLib);
73 load_order = calloc(n_libs + 1, sizeof(GtkLib *));
74 if (load_order == NULL) {
75 return NULL;
76 }
77 }
78 int i, first = 0;
79 for (i = 0; i < n_libs; i++) {
80 load_order[i] = >k_libs[i];
81 if (load_order[i]->version == version) {
82 first = i;
83 }
84 }
85 if (first) {
86 for (i = first; i > 0; i--) {
87 load_order[i] = load_order[i - 1];
88 }
89 load_order[0] = >k_libs[first];
90 }
91 return load_order;
92 }
93
get_loaded()94 static GtkLib* get_loaded() {
95 GtkLib** libs = get_libs_order(GTK_ANY);
96 if (libs == NULL) return NULL;
97 while(!gtk && *libs) {
98 GtkLib* lib = *libs++;
99 if (lib->check(lib->vname, /* load = */FALSE)) {
100 return lib;
101 }
102 if (lib->check(lib->name, /* load = */FALSE)) {
103 return lib;
104 }
105 }
106 return NULL;
107 }
108
gtk_load(JNIEnv * env,GtkVersion version,gboolean verbose)109 gboolean gtk_load(JNIEnv *env, GtkVersion version, gboolean verbose) {
110 if (gtk == NULL) {
111 GtkLib* lib = get_loaded();
112 if (lib) {
113 if (verbose) {
114 fprintf(stderr, "Looking for GTK%d library...\n",
115 lib->version);
116 }
117 gtk = lib->load(env, lib->vname);
118 if (!gtk) {
119 gtk = lib->load(env, lib->name);
120 }
121 } else {
122 GtkLib** libs = get_libs_order(version);
123 while (!gtk && libs && *libs) {
124 lib = *libs++;
125 if (version == GTK_ANY || lib->version == version) {
126 if (verbose) {
127 fprintf(stderr, "Looking for GTK%d library...\n",
128 lib->version);
129 }
130 gtk = lib->load(env, lib->vname);
131 if (!gtk) {
132 gtk = lib->load(env, lib->name);
133 }
134 if (verbose && !gtk) {
135 fprintf(stderr, "Not found.\n");
136 }
137 }
138 }
139 }
140 if (verbose) {
141 if (gtk) {
142 fprintf(stderr, "GTK%d library loaded.\n", lib->version);
143 } else {
144 fprintf(stderr, "Failed to load GTK library.\n");
145 }
146 }
147 }
148 return gtk != NULL;
149 }
150
check_version(GtkVersion version)151 static gboolean check_version(GtkVersion version) {
152 GtkLib** libs = get_libs_order(version);
153 if (libs == NULL) return FALSE;
154 while (*libs) {
155 GtkLib* lib = *libs++;
156 if (lib->check(lib->vname, /* load = */TRUE)) {
157 return TRUE;
158 }
159 if (lib->check(lib->name, /* load = */TRUE)) {
160 return TRUE;
161 }
162 }
163 return FALSE;
164 }
165
gtk_check_version(GtkVersion version)166 gboolean gtk_check_version(GtkVersion version) {
167 if (gtk || get_loaded()) {
168 return TRUE;
169 }
170 return check_version(version);
171 }
172
173