| /* |
| * Copyright (c) 2005, 2016, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| #include <dlfcn.h> |
| #include <stdlib.h> |
| #include "jvm_md.h" |
| #include "gtk_interface.h" |
| |
| GtkApi* gtk2_load(JNIEnv *env, const char* lib_name); |
| GtkApi* gtk3_load(JNIEnv *env, const char* lib_name); |
| |
| gboolean gtk2_check(const char* lib_name, gboolean load); |
| gboolean gtk3_check(const char* lib_name, gboolean load); |
| |
| GtkApi *gtk; |
| |
| typedef struct { |
| GtkVersion version; |
| const char* name; |
| const char* vname; |
| GtkApi* (*load)(JNIEnv *env, const char* lib_name); |
| gboolean (*check)(const char* lib_name, gboolean load); |
| } GtkLib; |
| |
| static GtkLib gtk_libs[] = { |
| { |
| GTK_2, |
| JNI_LIB_NAME("gtk-x11-2.0"), |
| VERSIONED_JNI_LIB_NAME("gtk-x11-2.0", "0"), |
| >k2_load, |
| >k2_check |
| }, |
| { |
| GTK_3, |
| JNI_LIB_NAME("gtk-3"), |
| VERSIONED_JNI_LIB_NAME("gtk-3", "0"), |
| >k3_load, |
| >k3_check |
| } |
| }; |
| |
| static GtkLib** get_libs_order(GtkVersion version) { |
| static GtkLib** load_order; |
| static int n_libs = 0; |
| if (!n_libs) { |
| n_libs = sizeof(gtk_libs) / sizeof(GtkLib); |
| load_order = calloc(n_libs + 1, sizeof(GtkLib *)); |
| } |
| int i, first = 0; |
| for (i = 0; i < n_libs; i++) { |
| load_order[i] = >k_libs[i]; |
| if (load_order[i]->version == version) { |
| first = i; |
| } |
| } |
| if (first) { |
| for (i = first; i > 0; i--) { |
| load_order[i] = load_order[i - 1]; |
| } |
| load_order[0] = >k_libs[first]; |
| } |
| return load_order; |
| } |
| |
| static GtkLib* get_loaded() { |
| GtkLib** libs = get_libs_order(GTK_ANY); |
| while(!gtk && *libs) { |
| GtkLib* lib = *libs++; |
| if (lib->check(lib->vname, /* load = */FALSE)) { |
| return lib; |
| } |
| if (lib->check(lib->name, /* load = */FALSE)) { |
| return lib; |
| } |
| } |
| return NULL; |
| } |
| |
| gboolean gtk_load(JNIEnv *env, GtkVersion version, gboolean verbose) { |
| if (gtk == NULL) { |
| GtkLib* lib = get_loaded(); |
| if (lib) { |
| if (verbose) { |
| fprintf(stderr, "Looking for GTK%d library...\n", |
| lib->version); |
| } |
| gtk = lib->load(env, lib->vname); |
| if (!gtk) { |
| gtk = lib->load(env, lib->name); |
| } |
| } else { |
| GtkLib** libs = get_libs_order(version); |
| while (!gtk && *libs) { |
| lib = *libs++; |
| if (version == GTK_ANY || lib->version == version) { |
| if (verbose) { |
| fprintf(stderr, "Looking for GTK%d library...\n", |
| lib->version); |
| } |
| gtk = lib->load(env, lib->vname); |
| if (!gtk) { |
| gtk = lib->load(env, lib->name); |
| } |
| if (verbose && !gtk) { |
| fprintf(stderr, "Not found.\n"); |
| } |
| } |
| } |
| } |
| if (verbose) { |
| if (gtk) { |
| fprintf(stderr, "GTK%d library loaded.\n", lib->version); |
| } else { |
| fprintf(stderr, "Failed to load GTK library.\n"); |
| } |
| } |
| } |
| return gtk != NULL; |
| } |
| |
| static gboolean check_version(GtkVersion version) { |
| GtkLib** libs = get_libs_order(version); |
| while (*libs) { |
| GtkLib* lib = *libs++; |
| if (lib->check(lib->vname, /* load = */TRUE)) { |
| return TRUE; |
| } |
| if (lib->check(lib->name, /* load = */TRUE)) { |
| return TRUE; |
| } |
| } |
| return FALSE; |
| } |
| |
| gboolean gtk_check_version(GtkVersion version) { |
| if (gtk || get_loaded()) { |
| return TRUE; |
| } |
| return check_version(version); |
| } |
| |