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Java example source code file (gtk2_interface.c)

This example Java source code file (gtk2_interface.c) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

false, g_type_make_fundamental, gdkpixbuf, gdkrectangle, gdkwindow, gtkadjustment, gtkobject\*, gtkshadowtype, gtkstatetype, gtkwidget, gvalue, internal_build, null, true

The gtk2_interface.c Java example source code

/*
 * Copyright (c) 2005, 2013, 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 <setjmp.h>
#include <X11/Xlib.h>
#include <limits.h>
#include <stdio.h>
#include <string.h>
#include "gtk2_interface.h"
#include "java_awt_Transparency.h"
#include "jvm_md.h"
#include "sizecalc.h"

#define GTK2_LIB_VERSIONED VERSIONED_JNI_LIB_NAME("gtk-x11-2.0", "0")
#define GTK2_LIB JNI_LIB_NAME("gtk-x11-2.0")
#define GTHREAD_LIB_VERSIONED VERSIONED_JNI_LIB_NAME("gthread-2.0", "0")
#define GTHREAD_LIB JNI_LIB_NAME("gthread-2.0")

#define G_TYPE_INVALID                  G_TYPE_MAKE_FUNDAMENTAL (0)
#define G_TYPE_NONE                     G_TYPE_MAKE_FUNDAMENTAL (1)
#define G_TYPE_INTERFACE                G_TYPE_MAKE_FUNDAMENTAL (2)
#define G_TYPE_CHAR                     G_TYPE_MAKE_FUNDAMENTAL (3)
#define G_TYPE_UCHAR                    G_TYPE_MAKE_FUNDAMENTAL (4)
#define G_TYPE_BOOLEAN                  G_TYPE_MAKE_FUNDAMENTAL (5)
#define G_TYPE_INT                      G_TYPE_MAKE_FUNDAMENTAL (6)
#define G_TYPE_UINT                     G_TYPE_MAKE_FUNDAMENTAL (7)
#define G_TYPE_LONG                     G_TYPE_MAKE_FUNDAMENTAL (8)
#define G_TYPE_ULONG                    G_TYPE_MAKE_FUNDAMENTAL (9)
#define G_TYPE_INT64                    G_TYPE_MAKE_FUNDAMENTAL (10)
#define G_TYPE_UINT64                   G_TYPE_MAKE_FUNDAMENTAL (11)
#define G_TYPE_ENUM                     G_TYPE_MAKE_FUNDAMENTAL (12)
#define G_TYPE_FLAGS                    G_TYPE_MAKE_FUNDAMENTAL (13)
#define G_TYPE_FLOAT                    G_TYPE_MAKE_FUNDAMENTAL (14)
#define G_TYPE_DOUBLE                   G_TYPE_MAKE_FUNDAMENTAL (15)
#define G_TYPE_STRING                   G_TYPE_MAKE_FUNDAMENTAL (16)
#define G_TYPE_POINTER                  G_TYPE_MAKE_FUNDAMENTAL (17)
#define G_TYPE_BOXED                    G_TYPE_MAKE_FUNDAMENTAL (18)
#define G_TYPE_PARAM                    G_TYPE_MAKE_FUNDAMENTAL (19)
#define G_TYPE_OBJECT                   G_TYPE_MAKE_FUNDAMENTAL (20)

#define GTK_TYPE_BORDER                 ((*fp_gtk_border_get_type)())

#define G_TYPE_FUNDAMENTAL_SHIFT        (2)
#define G_TYPE_MAKE_FUNDAMENTAL(x)      ((GType) ((x) << G_TYPE_FUNDAMENTAL_SHIFT))
#define MIN(a, b)  (((a) < (b)) ? (a) : (b))

#define CONV_BUFFER_SIZE 128

#define NO_SYMBOL_EXCEPTION 1

/* SynthConstants */
const gint ENABLED    = 1 << 0;
const gint MOUSE_OVER = 1 << 1;
const gint PRESSED    = 1 << 2;
const gint DISABLED   = 1 << 3;
const gint FOCUSED    = 1 << 8;
const gint SELECTED   = 1 << 9;
const gint DEFAULT    = 1 << 10;

static void *gtk2_libhandle = NULL;
static void *gthread_libhandle = NULL;

static jmp_buf j;

/* Widgets */
static GtkWidget *gtk2_widget = NULL;
static GtkWidget *gtk2_window = NULL;
static GtkFixed  *gtk2_fixed  = NULL;

/* Paint system */
static GdkPixmap *gtk2_white_pixmap = NULL;
static GdkPixmap *gtk2_black_pixmap = NULL;
static GdkPixbuf *gtk2_white_pixbuf = NULL;
static GdkPixbuf *gtk2_black_pixbuf = NULL;
static int gtk2_pixbuf_width = 0;
static int gtk2_pixbuf_height = 0;

/* Static buffer for conversion from java.lang.String to UTF-8 */
static char convertionBuffer[CONV_BUFFER_SIZE];

static gboolean new_combo = TRUE;
const char ENV_PREFIX[] = "GTK_MODULES=";

/*******************/
enum GtkWidgetType
{
    _GTK_ARROW_TYPE,
    _GTK_BUTTON_TYPE,
    _GTK_CHECK_BUTTON_TYPE,
    _GTK_CHECK_MENU_ITEM_TYPE,
    _GTK_COLOR_SELECTION_DIALOG_TYPE,
    _GTK_COMBO_BOX_TYPE,
    _GTK_COMBO_BOX_ARROW_BUTTON_TYPE,
    _GTK_COMBO_BOX_TEXT_FIELD_TYPE,
    _GTK_CONTAINER_TYPE,
    _GTK_ENTRY_TYPE,
    _GTK_FRAME_TYPE,
    _GTK_HANDLE_BOX_TYPE,
    _GTK_HPANED_TYPE,
    _GTK_HPROGRESS_BAR_TYPE,
    _GTK_HSCALE_TYPE,
    _GTK_HSCROLLBAR_TYPE,
    _GTK_HSEPARATOR_TYPE,
    _GTK_IMAGE_TYPE,
    _GTK_MENU_TYPE,
    _GTK_MENU_BAR_TYPE,
    _GTK_MENU_ITEM_TYPE,
    _GTK_NOTEBOOK_TYPE,
    _GTK_LABEL_TYPE,
    _GTK_RADIO_BUTTON_TYPE,
    _GTK_RADIO_MENU_ITEM_TYPE,
    _GTK_SCROLLED_WINDOW_TYPE,
    _GTK_SEPARATOR_MENU_ITEM_TYPE,
    _GTK_SEPARATOR_TOOL_ITEM_TYPE,
    _GTK_SPIN_BUTTON_TYPE,
    _GTK_TEXT_VIEW_TYPE,
    _GTK_TOGGLE_BUTTON_TYPE,
    _GTK_TOOLBAR_TYPE,
    _GTK_TOOLTIP_TYPE,
    _GTK_TREE_VIEW_TYPE,
    _GTK_VIEWPORT_TYPE,
    _GTK_VPANED_TYPE,
    _GTK_VPROGRESS_BAR_TYPE,
    _GTK_VSCALE_TYPE,
    _GTK_VSCROLLBAR_TYPE,
    _GTK_VSEPARATOR_TYPE,
    _GTK_WINDOW_TYPE,
    _GTK_DIALOG_TYPE,
    _GTK_WIDGET_TYPE_SIZE
};


static GtkWidget *gtk2_widgets[_GTK_WIDGET_TYPE_SIZE];

/*************************
 * Glib function pointers
 *************************/

static gboolean (*fp_g_main_context_iteration)(GMainContext *context,
                                             gboolean may_block);

static GValue*      (*fp_g_value_init)(GValue *value, GType g_type);
static gboolean     (*fp_g_type_is_a)(GType type, GType is_a_type);
static gboolean     (*fp_g_value_get_boolean)(const GValue *value);
static gchar        (*fp_g_value_get_char)(const GValue *value);
static guchar       (*fp_g_value_get_uchar)(const GValue *value);
static gint         (*fp_g_value_get_int)(const GValue *value);
static guint        (*fp_g_value_get_uint)(const GValue *value);
static glong        (*fp_g_value_get_long)(const GValue *value);
static gulong       (*fp_g_value_get_ulong)(const GValue *value);
static gint64       (*fp_g_value_get_int64)(const GValue *value);
static guint64      (*fp_g_value_get_uint64)(const GValue *value);
static gfloat       (*fp_g_value_get_float)(const GValue *value);
static gdouble      (*fp_g_value_get_double)(const GValue *value);
static const gchar* (*fp_g_value_get_string)(const GValue *value);
static gint         (*fp_g_value_get_enum)(const GValue *value);
static guint        (*fp_g_value_get_flags)(const GValue *value);
static GParamSpec*  (*fp_g_value_get_param)(const GValue *value);
static gpointer*    (*fp_g_value_get_boxed)(const GValue *value);
static gpointer*    (*fp_g_value_get_pointer)(const GValue *value);
static GObject*     (*fp_g_value_get_object)(const GValue *value);
static GParamSpec*  (*fp_g_param_spec_int)(const gchar *name,
        const gchar *nick, const gchar *blurb,
        gint minimum, gint maximum, gint default_value,
        GParamFlags flags);
static void         (*fp_g_object_get)(gpointer object,
                                       const gchar* fpn, ...);
static void         (*fp_g_object_set)(gpointer object,
                                       const gchar *first_property_name,
                                       ...);
/************************
 * GDK function pointers
 ************************/
static GdkPixmap *(*fp_gdk_pixmap_new)(GdkDrawable *drawable,
        gint width, gint height, gint depth);
static GdkGC *(*fp_gdk_gc_new)(GdkDrawable*);
static void (*fp_gdk_rgb_gc_set_foreground)(GdkGC*, guint32);
static void (*fp_gdk_draw_rectangle)(GdkDrawable*, GdkGC*, gboolean,
        gint, gint, gint, gint);
static GdkPixbuf *(*fp_gdk_pixbuf_new)(GdkColorspace colorspace,
        gboolean has_alpha, int bits_per_sample, int width, int height);
static GdkPixbuf *(*fp_gdk_pixbuf_get_from_drawable)(GdkPixbuf *dest,
        GdkDrawable *src, GdkColormap *cmap, int src_x, int src_y,
        int dest_x, int dest_y, int width, int height);
static void (*fp_gdk_drawable_get_size)(GdkDrawable *drawable,
        gint* width, gint* height);

/************************
 * Gtk function pointers
 ************************/
static gboolean (*fp_gtk_init_check)(int* argc, char** argv);

/* Painting */
static void (*fp_gtk_paint_hline)(GtkStyle* style, GdkWindow* window,
        GtkStateType state_type, GdkRectangle* area, GtkWidget* widget,
        const gchar* detail, gint x1, gint x2, gint y);
static void (*fp_gtk_paint_vline)(GtkStyle* style, GdkWindow* window,
        GtkStateType state_type, GdkRectangle* area, GtkWidget* widget,
        const gchar* detail, gint y1, gint y2, gint x);
static void (*fp_gtk_paint_shadow)(GtkStyle* style, GdkWindow* window,
        GtkStateType state_type, GtkShadowType shadow_type,
        GdkRectangle* area, GtkWidget* widget, const gchar* detail,
        gint x, gint y, gint width, gint height);
static void (*fp_gtk_paint_arrow)(GtkStyle* style, GdkWindow* window,
        GtkStateType state_type, GtkShadowType shadow_type,
        GdkRectangle* area, GtkWidget* widget, const gchar* detail,
        GtkArrowType arrow_type, gboolean fill, gint x, gint y,
        gint width, gint height);
static void (*fp_gtk_paint_diamond)(GtkStyle* style, GdkWindow* window,
        GtkStateType state_type, GtkShadowType shadow_type,
        GdkRectangle* area, GtkWidget* widget, const gchar* detail,
        gint x, gint y, gint width, gint height);
static void (*fp_gtk_paint_box)(GtkStyle* style, GdkWindow* window,
        GtkStateType state_type, GtkShadowType shadow_type,
        GdkRectangle* area, GtkWidget* widget, const gchar* detail,
        gint x, gint y, gint width, gint height);
static void (*fp_gtk_paint_flat_box)(GtkStyle* style, GdkWindow* window,
        GtkStateType state_type, GtkShadowType shadow_type,
        GdkRectangle* area, GtkWidget* widget, const gchar* detail,
        gint x, gint y, gint width, gint height);
static void (*fp_gtk_paint_check)(GtkStyle* style, GdkWindow* window,
        GtkStateType state_type, GtkShadowType shadow_type,
        GdkRectangle* area, GtkWidget* widget, const gchar* detail,
        gint x, gint y, gint width, gint height);
static void (*fp_gtk_paint_option)(GtkStyle* style, GdkWindow* window,
        GtkStateType state_type, GtkShadowType shadow_type,
        GdkRectangle* area, GtkWidget* widget, const gchar* detail,
        gint x, gint y, gint width, gint height);
static void (*fp_gtk_paint_box_gap)(GtkStyle* style, GdkWindow* window,
        GtkStateType state_type, GtkShadowType shadow_type,
        GdkRectangle* area, GtkWidget* widget, const gchar* detail,
        gint x, gint y, gint width, gint height,
        GtkPositionType gap_side, gint gap_x, gint gap_width);
static void (*fp_gtk_paint_extension)(GtkStyle* style, GdkWindow* window,
        GtkStateType state_type, GtkShadowType shadow_type,
        GdkRectangle* area, GtkWidget* widget, const gchar* detail,
        gint x, gint y, gint width, gint height, GtkPositionType gap_side);
static void (*fp_gtk_paint_focus)(GtkStyle* style, GdkWindow* window,
        GtkStateType state_type, GdkRectangle* area, GtkWidget* widget,
        const gchar* detail, gint x, gint y, gint width, gint height);
static void (*fp_gtk_paint_slider)(GtkStyle* style, GdkWindow* window,
        GtkStateType state_type, GtkShadowType shadow_type,
        GdkRectangle* area, GtkWidget* widget, const gchar* detail,
        gint x, gint y, gint width, gint height, GtkOrientation orientation);
static void (*fp_gtk_paint_handle)(GtkStyle* style, GdkWindow* window,
        GtkStateType state_type, GtkShadowType shadow_type,
        GdkRectangle* area, GtkWidget* widget, const gchar* detail,
        gint x, gint y, gint width, gint height, GtkOrientation orientation);
static void (*fp_gtk_paint_expander)(GtkStyle* style, GdkWindow* window,
        GtkStateType state_type, GdkRectangle* area, GtkWidget* widget,
        const gchar* detail, gint x, gint y, GtkExpanderStyle expander_style);
static void (*fp_gtk_style_apply_default_background)(GtkStyle* style,
        GdkWindow* window, gboolean set_bg, GtkStateType state_type,
        GdkRectangle* area, gint x, gint y, gint width, gint height);

/* Widget creation */
static GtkWidget* (*fp_gtk_arrow_new)(GtkArrowType arrow_type,
                                      GtkShadowType shadow_type);
static GtkWidget* (*fp_gtk_button_new)();
static GtkWidget* (*fp_gtk_check_button_new)();
static GtkWidget* (*fp_gtk_check_menu_item_new)();
static GtkWidget* (*fp_gtk_color_selection_dialog_new)(const gchar* title);
static GtkWidget* (*fp_gtk_combo_box_new)();
static GtkWidget* (*fp_gtk_combo_box_entry_new)();
static GtkWidget* (*fp_gtk_entry_new)();
static GtkWidget* (*fp_gtk_fixed_new)();
static GtkWidget* (*fp_gtk_handle_box_new)();
static GtkWidget* (*fp_gtk_hpaned_new)();
static GtkWidget* (*fp_gtk_vpaned_new)();
static GtkWidget* (*fp_gtk_hscale_new)(GtkAdjustment* adjustment);
static GtkWidget* (*fp_gtk_vscale_new)(GtkAdjustment* adjustment);
static GtkWidget* (*fp_gtk_hscrollbar_new)(GtkAdjustment* adjustment);
static GtkWidget* (*fp_gtk_vscrollbar_new)(GtkAdjustment* adjustment);
static GtkWidget* (*fp_gtk_hseparator_new)();
static GtkWidget* (*fp_gtk_vseparator_new)();
static GtkWidget* (*fp_gtk_image_new)();
static GtkWidget* (*fp_gtk_label_new)(const gchar* str);
static GtkWidget* (*fp_gtk_menu_new)();
static GtkWidget* (*fp_gtk_menu_bar_new)();
static GtkWidget* (*fp_gtk_menu_item_new)();
static GtkWidget* (*fp_gtk_notebook_new)();
static GtkWidget* (*fp_gtk_progress_bar_new)();
static GtkWidget* (*fp_gtk_progress_bar_set_orientation)(
        GtkProgressBar *pbar,
        GtkProgressBarOrientation orientation);
static GtkWidget* (*fp_gtk_radio_button_new)(GSList *group);
static GtkWidget* (*fp_gtk_radio_menu_item_new)(GSList *group);
static GtkWidget* (*fp_gtk_scrolled_window_new)(GtkAdjustment *hadjustment,
        GtkAdjustment *vadjustment);
static GtkWidget* (*fp_gtk_separator_menu_item_new)();
static GtkWidget* (*fp_gtk_separator_tool_item_new)();
static GtkWidget* (*fp_gtk_text_view_new)();
static GtkWidget* (*fp_gtk_toggle_button_new)();
static GtkWidget* (*fp_gtk_toolbar_new)();
static GtkWidget* (*fp_gtk_tree_view_new)();
static GtkWidget* (*fp_gtk_viewport_new)(GtkAdjustment *hadjustment,
        GtkAdjustment *vadjustment);
static GtkWidget* (*fp_gtk_window_new)(GtkWindowType type);
static GtkWidget* (*fp_gtk_dialog_new)();
static GtkWidget* (*fp_gtk_spin_button_new)(GtkAdjustment *adjustment,
        gdouble climb_rate, guint digits);
static GtkWidget* (*fp_gtk_frame_new)(const gchar *label);

/* Other widget operations */
static GtkObject* (*fp_gtk_adjustment_new)(gdouble value,
        gdouble lower, gdouble upper, gdouble step_increment,
        gdouble page_increment, gdouble page_size);
static void (*fp_gtk_container_add)(GtkContainer *window, GtkWidget *widget);
static void (*fp_gtk_menu_shell_append)(GtkMenuShell *menu_shell,
        GtkWidget *child);
static void (*fp_gtk_menu_item_set_submenu)(GtkMenuItem *menu_item,
        GtkWidget *submenu);
static void (*fp_gtk_widget_realize)(GtkWidget *widget);
static GdkPixbuf* (*fp_gtk_widget_render_icon)(GtkWidget *widget,
        const gchar *stock_id, GtkIconSize size, const gchar *detail);
static void (*fp_gtk_widget_set_name)(GtkWidget *widget, const gchar *name);
static void (*fp_gtk_widget_set_parent)(GtkWidget *widget, GtkWidget *parent);
static void (*fp_gtk_widget_set_direction)(GtkWidget *widget,
        GtkTextDirection direction);
static void (*fp_gtk_widget_style_get)(GtkWidget *widget,
        const gchar *first_property_name, ...);
static void (*fp_gtk_widget_class_install_style_property)(
        GtkWidgetClass* class, GParamSpec *pspec);
static GParamSpec* (*fp_gtk_widget_class_find_style_property)(
        GtkWidgetClass* class, const gchar* property_name);
static void (*fp_gtk_widget_style_get_property)(GtkWidget* widget,
        const gchar* property_name, GValue* value);
static char* (*fp_pango_font_description_to_string)(
        const PangoFontDescription* fd);
static GtkSettings* (*fp_gtk_settings_get_default)();
static GtkSettings* (*fp_gtk_widget_get_settings)(GtkWidget *widget);
static GType        (*fp_gtk_border_get_type)();
static void (*fp_gtk_arrow_set)(GtkWidget* arrow,
                                GtkArrowType arrow_type,
                                GtkShadowType shadow_type);
static void (*fp_gtk_widget_size_request)(GtkWidget *widget,
                                          GtkRequisition *requisition);
static GtkAdjustment* (*fp_gtk_range_get_adjustment)(GtkRange* range);

/* Method bodies */
const char *getStrFor(JNIEnv *env, jstring val)
{
    int length = (*env)->GetStringLength(env, val);
    if (length > CONV_BUFFER_SIZE-1)
    {
        length = CONV_BUFFER_SIZE-1;
#ifdef INTERNAL_BUILD
        fprintf(stderr, "Note: Detail is too long: %d chars\n", length);
#endif /* INTERNAL_BUILD */
    }

    (*env)->GetStringUTFRegion(env, val, 0, length, convertionBuffer);
    return convertionBuffer;
}

static void throw_exception(JNIEnv *env, const char* name, const char* message)
{
    jclass class = (*env)->FindClass(env, name);

    if (class != NULL)
        (*env)->ThrowNew(env, class, message);

    (*env)->DeleteLocalRef(env, class);
}

/* This is a workaround for the bug:
 * http://sourceware.org/bugzilla/show_bug.cgi?id=1814
 * (dlsym/dlopen clears dlerror state)
 * This bug is specific to Linux, but there is no harm in
 * applying this workaround on Solaris as well.
 */
static void* dl_symbol(const char* name)
{
    void* result = dlsym(gtk2_libhandle, name);
    if (!result)
        longjmp(j, NO_SYMBOL_EXCEPTION);

    return result;
}

static void* dl_symbol_gthread(const char* name)
{
    void* result = dlsym(gthread_libhandle, name);
    if (!result)
        longjmp(j, NO_SYMBOL_EXCEPTION);

    return result;
}

gboolean gtk2_check_version()
{
    if (gtk2_libhandle != NULL) {
        /* We've already successfully opened the GTK libs, so return true. */
        return TRUE;
    } else {
        void *lib = NULL;
        gboolean result = FALSE;

        lib = dlopen(GTK2_LIB_VERSIONED, RTLD_LAZY | RTLD_LOCAL);
        if (lib == NULL) {
            lib = dlopen(GTK2_LIB, RTLD_LAZY | RTLD_LOCAL);
            if (lib == NULL) {
                return FALSE;
            }
        }

        fp_gtk_check_version = dlsym(lib, "gtk_check_version");
        /* Check for GTK 2.2+ */
        if (!fp_gtk_check_version(2, 2, 0)) {
            result = TRUE;
        }

        dlclose(lib);

        return result;
    }
}

#define ADD_SUPPORTED_ACTION(actionStr) \
do { \
    jfieldID fld_action = (*env)->GetStaticFieldID(env, cls_action, actionStr, "Ljava/awt/Desktop$Action;"); \
    if (!(*env)->ExceptionCheck(env)) { \
        jobject action = (*env)->GetStaticObjectField(env, cls_action, fld_action); \
        (*env)->CallBooleanMethod(env, supportedActions, mid_arrayListAdd, action); \
    } else { \
        (*env)->ExceptionClear(env); \
    } \
} while(0);


void update_supported_actions(JNIEnv *env) {
    GVfs * (*fp_g_vfs_get_default) (void);
    const gchar * const * (*fp_g_vfs_get_supported_uri_schemes) (GVfs * vfs);
    const gchar * const * schemes = NULL;

    jclass cls_action = (*env)->FindClass(env, "java/awt/Desktop$Action");
    jclass cls_xDesktopPeer = (*env)->FindClass(env, "sun/awt/X11/XDesktopPeer");
    jfieldID fld_supportedActions = (*env)->GetStaticFieldID(env, cls_xDesktopPeer, "supportedActions", "Ljava/util/List;");
    jobject supportedActions = (*env)->GetStaticObjectField(env, cls_xDesktopPeer, fld_supportedActions);

    jclass cls_arrayList = (*env)->FindClass(env, "java/util/ArrayList");
    jmethodID mid_arrayListAdd = (*env)->GetMethodID(env, cls_arrayList, "add", "(Ljava/lang/Object;)Z");
    jmethodID mid_arrayListClear = (*env)->GetMethodID(env, cls_arrayList, "clear", "()V");

    (*env)->CallVoidMethod(env, supportedActions, mid_arrayListClear);

    ADD_SUPPORTED_ACTION("OPEN");

    /**
     * gtk_show_uri() documentation says:
     *
     * > you need to install gvfs to get support for uri schemes such as http://
     * > or ftp://, as only local files are handled by GIO itself.
     *
     * So OPEN action was safely added here.
     * However, it looks like Solaris 11 have gvfs support only for 32-bit
     * applications only by default.
     */

    fp_g_vfs_get_default = dl_symbol("g_vfs_get_default");
    fp_g_vfs_get_supported_uri_schemes = dl_symbol("g_vfs_get_supported_uri_schemes");
    dlerror();

    if (fp_g_vfs_get_default && fp_g_vfs_get_supported_uri_schemes) {
        GVfs * vfs = fp_g_vfs_get_default();
        schemes = vfs ? fp_g_vfs_get_supported_uri_schemes(vfs) : NULL;
        if (schemes) {
            int i = 0;
            while (schemes[i]) {
                if (strcmp(schemes[i], "http") == 0) {
                    ADD_SUPPORTED_ACTION("BROWSE");
                    ADD_SUPPORTED_ACTION("MAIL");
                    break;
                }
                i++;
            }
        }
    } else {
#ifdef INTERNAL_BUILD
        fprintf(stderr, "Cannot load g_vfs_get_supported_uri_schemes\n");
#endif /* INTERNAL_BUILD */
    }

}
/**
 * Functions for awt_Desktop.c
 */
gboolean gtk2_show_uri_load(JNIEnv *env) {
     gboolean success = FALSE;
     dlerror();
     const char *gtk_version = fp_gtk_check_version(2, 14, 0);
     if (gtk_version != NULL) {
         // The gtk_show_uri is available from GTK+ 2.14
#ifdef INTERNAL_BUILD
         fprintf (stderr, "The version of GTK is %s. "
             "The gtk_show_uri function is supported "
             "since GTK+ 2.14.\n", gtk_version);
#endif /* INTERNAL_BUILD */
     } else {
         // Loading symbols only if the GTK version is 2.14 and higher
         fp_gtk_show_uri = dl_symbol("gtk_show_uri");
         const char *dlsym_error = dlerror();
         if (dlsym_error) {
#ifdef INTERNAL_BUILD
             fprintf (stderr, "Cannot load symbol: %s \n", dlsym_error);
#endif /* INTERNAL_BUILD */
         } else if (fp_gtk_show_uri == NULL) {
#ifdef INTERNAL_BUILD
             fprintf(stderr, "dlsym(gtk_show_uri) returned NULL\n");
#endif /* INTERNAL_BUILD */
        } else {
#ifdef __solaris__
            update_supported_actions(env);
#endif
            success = TRUE;
        }
     }
     return success;
}

/**
 * Functions for sun_awt_X11_GtkFileDialogPeer.c
 */
void gtk2_file_chooser_load()
{
    fp_gtk_file_chooser_get_filename = dl_symbol(
            "gtk_file_chooser_get_filename");
    fp_gtk_file_chooser_dialog_new = dl_symbol("gtk_file_chooser_dialog_new");
    fp_gtk_file_chooser_set_current_folder = dl_symbol(
            "gtk_file_chooser_set_current_folder");
    fp_gtk_file_chooser_set_filename = dl_symbol(
            "gtk_file_chooser_set_filename");
    fp_gtk_file_chooser_set_current_name = dl_symbol(
            "gtk_file_chooser_set_current_name");
    fp_gtk_file_filter_add_custom = dl_symbol("gtk_file_filter_add_custom");
    fp_gtk_file_chooser_set_filter = dl_symbol("gtk_file_chooser_set_filter");
    fp_gtk_file_chooser_get_type = dl_symbol("gtk_file_chooser_get_type");
    fp_gtk_file_filter_new = dl_symbol("gtk_file_filter_new");
    if (fp_gtk_check_version(2, 8, 0) == NULL) {
        fp_gtk_file_chooser_set_do_overwrite_confirmation = dl_symbol(
                "gtk_file_chooser_set_do_overwrite_confirmation");
    }
    fp_gtk_file_chooser_set_select_multiple = dl_symbol(
            "gtk_file_chooser_set_select_multiple");
    fp_gtk_file_chooser_get_current_folder = dl_symbol(
            "gtk_file_chooser_get_current_folder");
    fp_gtk_file_chooser_get_filenames = dl_symbol(
            "gtk_file_chooser_get_filenames");
    fp_gtk_g_slist_length = dl_symbol("g_slist_length");
}

gboolean gtk2_load(JNIEnv *env)
{
    gboolean result;
    int i;
    int (*handler)();
    int (*io_handler)();
    char *gtk_modules_env;

    gtk2_libhandle = dlopen(GTK2_LIB_VERSIONED, RTLD_LAZY | RTLD_LOCAL);
    if (gtk2_libhandle == NULL) {
        gtk2_libhandle = dlopen(GTK2_LIB, RTLD_LAZY | RTLD_LOCAL);
        if (gtk2_libhandle == NULL)
            return FALSE;
    }

    gthread_libhandle = dlopen(GTHREAD_LIB_VERSIONED, RTLD_LAZY | RTLD_LOCAL);
    if (gthread_libhandle == NULL) {
        gthread_libhandle = dlopen(GTHREAD_LIB, RTLD_LAZY | RTLD_LOCAL);
        if (gthread_libhandle == NULL)
            return FALSE;
    }

    if (setjmp(j) == 0)
    {
        fp_gtk_check_version = dl_symbol("gtk_check_version");
        /* Check for GTK 2.2+ */
        if (fp_gtk_check_version(2, 2, 0)) {
            longjmp(j, NO_SYMBOL_EXCEPTION);
        }

        /* GLib */
        fp_glib_check_version = dlsym(gtk2_libhandle, "glib_check_version");
        if (!fp_glib_check_version) {
            dlerror();
        }
        fp_g_free = dl_symbol("g_free");
        fp_g_object_unref = dl_symbol("g_object_unref");

        fp_g_main_context_iteration =
            dl_symbol("g_main_context_iteration");

        fp_g_value_init = dl_symbol("g_value_init");
        fp_g_type_is_a = dl_symbol("g_type_is_a");

        fp_g_value_get_boolean = dl_symbol("g_value_get_boolean");
        fp_g_value_get_char = dl_symbol("g_value_get_char");
        fp_g_value_get_uchar = dl_symbol("g_value_get_uchar");
        fp_g_value_get_int = dl_symbol("g_value_get_int");
        fp_g_value_get_uint = dl_symbol("g_value_get_uint");
        fp_g_value_get_long = dl_symbol("g_value_get_long");
        fp_g_value_get_ulong = dl_symbol("g_value_get_ulong");
        fp_g_value_get_int64 = dl_symbol("g_value_get_int64");
        fp_g_value_get_uint64 = dl_symbol("g_value_get_uint64");
        fp_g_value_get_float = dl_symbol("g_value_get_float");
        fp_g_value_get_double = dl_symbol("g_value_get_double");
        fp_g_value_get_string = dl_symbol("g_value_get_string");
        fp_g_value_get_enum = dl_symbol("g_value_get_enum");
        fp_g_value_get_flags = dl_symbol("g_value_get_flags");
        fp_g_value_get_param = dl_symbol("g_value_get_param");
        fp_g_value_get_boxed = dl_symbol("g_value_get_boxed");
        fp_g_value_get_pointer = dl_symbol("g_value_get_pointer");
        fp_g_value_get_object = dl_symbol("g_value_get_object");
        fp_g_param_spec_int = dl_symbol("g_param_spec_int");
        fp_g_object_get = dl_symbol("g_object_get");
        fp_g_object_set = dl_symbol("g_object_set");

        /* GDK */
        fp_gdk_pixmap_new = dl_symbol("gdk_pixmap_new");
        fp_gdk_pixbuf_get_from_drawable =
            dl_symbol("gdk_pixbuf_get_from_drawable");
        fp_gdk_gc_new = dl_symbol("gdk_gc_new");
        fp_gdk_rgb_gc_set_foreground =
            dl_symbol("gdk_rgb_gc_set_foreground");
        fp_gdk_draw_rectangle = dl_symbol("gdk_draw_rectangle");
        fp_gdk_drawable_get_size = dl_symbol("gdk_drawable_get_size");

        /* Pixbuf */
        fp_gdk_pixbuf_new = dl_symbol("gdk_pixbuf_new");
        fp_gdk_pixbuf_new_from_file =
                dl_symbol("gdk_pixbuf_new_from_file");
        fp_gdk_pixbuf_get_width = dl_symbol("gdk_pixbuf_get_width");
        fp_gdk_pixbuf_get_height = dl_symbol("gdk_pixbuf_get_height");
        fp_gdk_pixbuf_get_pixels = dl_symbol("gdk_pixbuf_get_pixels");
        fp_gdk_pixbuf_get_rowstride =
                dl_symbol("gdk_pixbuf_get_rowstride");
        fp_gdk_pixbuf_get_has_alpha =
                dl_symbol("gdk_pixbuf_get_has_alpha");
        fp_gdk_pixbuf_get_bits_per_sample =
                dl_symbol("gdk_pixbuf_get_bits_per_sample");
        fp_gdk_pixbuf_get_n_channels =
                dl_symbol("gdk_pixbuf_get_n_channels");

        /* GTK painting */
        fp_gtk_init_check = dl_symbol("gtk_init_check");
        fp_gtk_paint_hline = dl_symbol("gtk_paint_hline");
        fp_gtk_paint_vline = dl_symbol("gtk_paint_vline");
        fp_gtk_paint_shadow = dl_symbol("gtk_paint_shadow");
        fp_gtk_paint_arrow = dl_symbol("gtk_paint_arrow");
        fp_gtk_paint_diamond = dl_symbol("gtk_paint_diamond");
        fp_gtk_paint_box = dl_symbol("gtk_paint_box");
        fp_gtk_paint_flat_box = dl_symbol("gtk_paint_flat_box");
        fp_gtk_paint_check = dl_symbol("gtk_paint_check");
        fp_gtk_paint_option = dl_symbol("gtk_paint_option");
        fp_gtk_paint_box_gap = dl_symbol("gtk_paint_box_gap");
        fp_gtk_paint_extension = dl_symbol("gtk_paint_extension");
        fp_gtk_paint_focus = dl_symbol("gtk_paint_focus");
        fp_gtk_paint_slider = dl_symbol("gtk_paint_slider");
        fp_gtk_paint_handle = dl_symbol("gtk_paint_handle");
        fp_gtk_paint_expander = dl_symbol("gtk_paint_expander");
        fp_gtk_style_apply_default_background =
                dl_symbol("gtk_style_apply_default_background");

        /* GTK widgets */
        fp_gtk_arrow_new = dl_symbol("gtk_arrow_new");
        fp_gtk_button_new = dl_symbol("gtk_button_new");
        fp_gtk_spin_button_new = dl_symbol("gtk_spin_button_new");
        fp_gtk_check_button_new = dl_symbol("gtk_check_button_new");
        fp_gtk_check_menu_item_new =
                dl_symbol("gtk_check_menu_item_new");
        fp_gtk_color_selection_dialog_new =
                dl_symbol("gtk_color_selection_dialog_new");
        fp_gtk_entry_new = dl_symbol("gtk_entry_new");
        fp_gtk_fixed_new = dl_symbol("gtk_fixed_new");
        fp_gtk_handle_box_new = dl_symbol("gtk_handle_box_new");
        fp_gtk_image_new = dl_symbol("gtk_image_new");
        fp_gtk_hpaned_new = dl_symbol("gtk_hpaned_new");
        fp_gtk_vpaned_new = dl_symbol("gtk_vpaned_new");
        fp_gtk_hscale_new = dl_symbol("gtk_hscale_new");
        fp_gtk_vscale_new = dl_symbol("gtk_vscale_new");
        fp_gtk_hscrollbar_new = dl_symbol("gtk_hscrollbar_new");
        fp_gtk_vscrollbar_new = dl_symbol("gtk_vscrollbar_new");
        fp_gtk_hseparator_new = dl_symbol("gtk_hseparator_new");
        fp_gtk_vseparator_new = dl_symbol("gtk_vseparator_new");
        fp_gtk_label_new = dl_symbol("gtk_label_new");
        fp_gtk_menu_new = dl_symbol("gtk_menu_new");
        fp_gtk_menu_bar_new = dl_symbol("gtk_menu_bar_new");
        fp_gtk_menu_item_new = dl_symbol("gtk_menu_item_new");
        fp_gtk_menu_item_set_submenu =
                dl_symbol("gtk_menu_item_set_submenu");
        fp_gtk_notebook_new = dl_symbol("gtk_notebook_new");
        fp_gtk_progress_bar_new =
            dl_symbol("gtk_progress_bar_new");
        fp_gtk_progress_bar_set_orientation =
            dl_symbol("gtk_progress_bar_set_orientation");
        fp_gtk_radio_button_new =
            dl_symbol("gtk_radio_button_new");
        fp_gtk_radio_menu_item_new =
            dl_symbol("gtk_radio_menu_item_new");
        fp_gtk_scrolled_window_new =
            dl_symbol("gtk_scrolled_window_new");
        fp_gtk_separator_menu_item_new =
            dl_symbol("gtk_separator_menu_item_new");
        fp_gtk_text_view_new = dl_symbol("gtk_text_view_new");
        fp_gtk_toggle_button_new =
            dl_symbol("gtk_toggle_button_new");
        fp_gtk_toolbar_new = dl_symbol("gtk_toolbar_new");
        fp_gtk_tree_view_new = dl_symbol("gtk_tree_view_new");
        fp_gtk_viewport_new = dl_symbol("gtk_viewport_new");
        fp_gtk_window_new = dl_symbol("gtk_window_new");
        fp_gtk_window_present = dl_symbol("gtk_window_present");
        fp_gtk_window_move = dl_symbol("gtk_window_move");
        fp_gtk_window_resize = dl_symbol("gtk_window_resize");

          fp_gtk_dialog_new = dl_symbol("gtk_dialog_new");
        fp_gtk_frame_new = dl_symbol("gtk_frame_new");

        fp_gtk_adjustment_new = dl_symbol("gtk_adjustment_new");
        fp_gtk_container_add = dl_symbol("gtk_container_add");
        fp_gtk_menu_shell_append =
            dl_symbol("gtk_menu_shell_append");
        fp_gtk_widget_realize = dl_symbol("gtk_widget_realize");
        fp_gtk_widget_destroy = dl_symbol("gtk_widget_destroy");
        fp_gtk_widget_render_icon =
            dl_symbol("gtk_widget_render_icon");
        fp_gtk_widget_set_name =
            dl_symbol("gtk_widget_set_name");
        fp_gtk_widget_set_parent =
            dl_symbol("gtk_widget_set_parent");
        fp_gtk_widget_set_direction =
            dl_symbol("gtk_widget_set_direction");
        fp_gtk_widget_style_get =
            dl_symbol("gtk_widget_style_get");
        fp_gtk_widget_class_install_style_property =
            dl_symbol("gtk_widget_class_install_style_property");
        fp_gtk_widget_class_find_style_property =
            dl_symbol("gtk_widget_class_find_style_property");
        fp_gtk_widget_style_get_property =
            dl_symbol("gtk_widget_style_get_property");
        fp_pango_font_description_to_string =
            dl_symbol("pango_font_description_to_string");
        fp_gtk_settings_get_default =
            dl_symbol("gtk_settings_get_default");
        fp_gtk_widget_get_settings =
            dl_symbol("gtk_widget_get_settings");
        fp_gtk_border_get_type =  dl_symbol("gtk_border_get_type");
        fp_gtk_arrow_set = dl_symbol("gtk_arrow_set");
        fp_gtk_widget_size_request =
            dl_symbol("gtk_widget_size_request");
        fp_gtk_range_get_adjustment =
            dl_symbol("gtk_range_get_adjustment");

        fp_gtk_widget_hide = dl_symbol("gtk_widget_hide");
        fp_gtk_main_quit = dl_symbol("gtk_main_quit");
        fp_g_signal_connect_data = dl_symbol("g_signal_connect_data");
        fp_gtk_widget_show = dl_symbol("gtk_widget_show");
        fp_gtk_main = dl_symbol("gtk_main");

        /**
         * GLib thread system
         */
        if (GLIB_CHECK_VERSION(2, 20, 0)) {
            fp_g_thread_get_initialized = dl_symbol_gthread("g_thread_get_initialized");
        }
        fp_g_thread_init = dl_symbol_gthread("g_thread_init");
        fp_gdk_threads_init = dl_symbol("gdk_threads_init");
        fp_gdk_threads_enter = dl_symbol("gdk_threads_enter");
        fp_gdk_threads_leave = dl_symbol("gdk_threads_leave");

        /**
         * Functions for sun_awt_X11_GtkFileDialogPeer.c
         */
        if (fp_gtk_check_version(2, 4, 0) == NULL) {
            // The current GtkFileChooser is available from GTK+ 2.4
            gtk2_file_chooser_load();
        }

        /* Some functions may be missing in pre-2.4 GTK.
           We handle them specially here.
         */
        fp_gtk_combo_box_new = dlsym(gtk2_libhandle, "gtk_combo_box_new");
        if (fp_gtk_combo_box_new == NULL) {
            fp_gtk_combo_box_new = dl_symbol("gtk_combo_new");
        }

        fp_gtk_combo_box_entry_new =
            dlsym(gtk2_libhandle, "gtk_combo_box_entry_new");
        if (fp_gtk_combo_box_entry_new == NULL) {
            fp_gtk_combo_box_entry_new = dl_symbol("gtk_combo_new");
            new_combo = FALSE;
        }

        fp_gtk_separator_tool_item_new =
            dlsym(gtk2_libhandle, "gtk_separator_tool_item_new");
        if (fp_gtk_separator_tool_item_new == NULL) {
            fp_gtk_separator_tool_item_new =
                dl_symbol("gtk_vseparator_new");
        }
    }
    /* Now we have only one kind of exceptions: NO_SYMBOL_EXCEPTION
     * Otherwise we can check the return value of setjmp method.
     */
    else
    {
        dlclose(gtk2_libhandle);
        gtk2_libhandle = NULL;

        dlclose(gthread_libhandle);
        gthread_libhandle = NULL;

        return FALSE;
    }

    /*
     * Strip the AT-SPI GTK_MODULEs if present
     */
    gtk_modules_env = getenv ("GTK_MODULES");

    if (gtk_modules_env && strstr (gtk_modules_env, "atk-bridge") ||
        gtk_modules_env && strstr (gtk_modules_env, "gail"))
    {
        /* the new env will be smaller than the old one */
        gchar *s, *new_env = SAFE_SIZE_STRUCT_ALLOC(malloc,
                sizeof(ENV_PREFIX), 1, strlen (gtk_modules_env));

        if (new_env != NULL )
        {
            /* careful, strtok modifies its args */
            gchar *tmp_env = strdup (gtk_modules_env);
            strcpy(new_env, ENV_PREFIX);

            /* strip out 'atk-bridge' and 'gail' */
            size_t PREFIX_LENGTH = strlen(ENV_PREFIX);
            while (s = strtok(tmp_env, ":"))
            {
                if ((!strstr (s, "atk-bridge")) && (!strstr (s, "gail")))
                {
                    if (strlen (new_env) > PREFIX_LENGTH) {
                        new_env = strcat (new_env, ":");
                    }
                    new_env = strcat(new_env, s);
                }
                if (tmp_env)
                {
                    free (tmp_env);
                    tmp_env = NULL; /* next call to strtok arg1==NULL */
                }
            }
            putenv (new_env);
            free (new_env);
            free (tmp_env);
        }
    }

    /*
     * GTK should be initialized with gtk_init_check() before use.
     *
     * gtk_init_check installs its own error handlers. It is critical that
     * we preserve error handler set from AWT. Otherwise we'll crash on
     * BadMatch errors which we would normally ignore. The IO error handler
     * is preserved here, too, just for consistency.
    */
    handler = XSetErrorHandler(NULL);
    io_handler = XSetIOErrorHandler(NULL);

    if (fp_gtk_check_version(2, 2, 0) == NULL) {
        jclass clazz = (*env)->FindClass(env, "sun/misc/GThreadHelper");
        jmethodID mid_getAndSetInitializationNeededFlag =
                (*env)->GetStaticMethodID(env, clazz, "getAndSetInitializationNeededFlag", "()Z");
        jmethodID mid_lock = (*env)->GetStaticMethodID(env, clazz, "lock", "()V");
        jmethodID mid_unlock = (*env)->GetStaticMethodID(env, clazz, "unlock", "()V");

        // Init the thread system to use GLib in a thread-safe mode
        (*env)->CallStaticVoidMethod(env, clazz, mid_lock);

        // Calling g_thread_init() multiple times leads to crash on GLib < 2.24
        // We can use g_thread_get_initialized () but it is available only for
        // GLib >= 2.20. We rely on GThreadHelper for GLib < 2.20.
        gboolean is_g_thread_get_initialized = FALSE;
        if (GLIB_CHECK_VERSION(2, 20, 0)) {
            is_g_thread_get_initialized = fp_g_thread_get_initialized();
        }

        if (!(*env)->CallStaticBooleanMethod(env, clazz, mid_getAndSetInitializationNeededFlag)) {
            if (!is_g_thread_get_initialized) {
                fp_g_thread_init(NULL);
            }

            //According the GTK documentation, gdk_threads_init() should be
            //called before gtk_init() or gtk_init_check()
            fp_gdk_threads_init();
        }
        (*env)->CallStaticVoidMethod(env, clazz, mid_unlock);
    }
    result = (*fp_gtk_init_check)(NULL, NULL);

    XSetErrorHandler(handler);
    XSetIOErrorHandler(io_handler);

    /* Initialize widget array. */
    for (i = 0; i < _GTK_WIDGET_TYPE_SIZE; i++)
    {
        gtk2_widgets[i] = NULL;
    }

    return result;
}

int gtk2_unload()
{
    int i;
    char *gtk2_error;

    if (!gtk2_libhandle)
        return TRUE;

    /* Release painting objects */
    if (gtk2_white_pixmap != NULL) {
        (*fp_g_object_unref)(gtk2_white_pixmap);
        (*fp_g_object_unref)(gtk2_black_pixmap);
        (*fp_g_object_unref)(gtk2_white_pixbuf);
        (*fp_g_object_unref)(gtk2_black_pixbuf);
        gtk2_white_pixmap = gtk2_black_pixmap =
            gtk2_white_pixbuf = gtk2_black_pixbuf = NULL;
    }
    gtk2_pixbuf_width = 0;
    gtk2_pixbuf_height = 0;

    if (gtk2_window != NULL) {
        /* Destroying toplevel widget will destroy all contained widgets */
        (*fp_gtk_widget_destroy)(gtk2_window);

        /* Unset some static data so they get reinitialized on next load */
        gtk2_window = NULL;
    }

    dlerror();
    dlclose(gtk2_libhandle);
    dlclose(gthread_libhandle);
    if ((gtk2_error = dlerror()) != NULL)
    {
        return FALSE;
    }
    return TRUE;
}

/* Dispatch all pending events from the GTK event loop.
 * This is needed to catch theme change and update widgets' style.
 */
void flush_gtk_event_loop()
{
    while( (*fp_g_main_context_iteration)(NULL, FALSE));
}

/*
 * Initialize components of containment hierarchy. This creates a GtkFixed
 * inside a GtkWindow. All widgets get realized.
 */
static void init_containers()
{
    if (gtk2_window == NULL)
    {
        gtk2_window = (*fp_gtk_window_new)(GTK_WINDOW_TOPLEVEL);
        gtk2_fixed = (GtkFixed *)(*fp_gtk_fixed_new)();
        (*fp_gtk_container_add)((GtkContainer*)gtk2_window,
                                (GtkWidget *)gtk2_fixed);
        (*fp_gtk_widget_realize)(gtk2_window);
        (*fp_gtk_widget_realize)((GtkWidget *)gtk2_fixed);
    }
}

/*
 * Ensure everything is ready for drawing an element of the specified width
 * and height.
 *
 * We should somehow handle translucent images. GTK can draw to X Drawables
 * only, which don't support alpha. When we retrieve the image back from
 * the server, translucency information is lost. There're several ways to
 * work around this:
 * 1) Subclass GdkPixmap and cache translucent objects on client side. This
 * requires us to implement parts of X server drawing logic on client side.
 * Many X requests can potentially be "translucent"; e.g. XDrawLine with
 * fill=tile and a translucent tile is a "translucent" operation, whereas
 * XDrawLine with fill=solid is an "opaque" one. Moreover themes can (and some
 * do) intermix transparent and opaque operations which makes caching even
 * more problematic.
 * 2) Use Xorg 32bit ARGB visual when available. GDK has no native support
 * for it (as of version 2.6). Also even in JDS 3 Xorg does not support
 * these visuals by default, which makes optimizing for them pointless.
 * We can consider doing this at a later point when ARGB visuals become more
 * popular.
 * 3') GTK has plans to use Cairo as its graphical backend (presumably in
 * 2.8), and Cairo supports alpha. With it we could also get rid of the
 * unnecessary round trip to server and do all the drawing on client side.
 * 4) For now we draw to two different pixmaps and restore alpha channel by
 * comparing results. This can be optimized by using subclassed pixmap and
 * doing the second drawing only if necessary.
*/
void gtk2_init_painting(JNIEnv *env, gint width, gint height)
{
    GdkGC *gc;
    GdkPixbuf *white, *black;

    init_containers();

    if (gtk2_pixbuf_width < width || gtk2_pixbuf_height < height)
    {
        white = (*fp_gdk_pixbuf_new)(GDK_COLORSPACE_RGB, TRUE, 8, width, height);
        black = (*fp_gdk_pixbuf_new)(GDK_COLORSPACE_RGB, TRUE, 8, width, height);

        if (white == NULL || black == NULL)
        {
            snprintf(convertionBuffer, CONV_BUFFER_SIZE, "Couldn't create pixbuf of size %dx%d", width, height);
            throw_exception(env, "java/lang/RuntimeException", convertionBuffer);
            fp_gdk_threads_leave();
            return;
        }

        if (gtk2_white_pixmap != NULL) {
            /* free old stuff */
            (*fp_g_object_unref)(gtk2_white_pixmap);
            (*fp_g_object_unref)(gtk2_black_pixmap);
            (*fp_g_object_unref)(gtk2_white_pixbuf);
            (*fp_g_object_unref)(gtk2_black_pixbuf);
        }

        gtk2_white_pixmap = (*fp_gdk_pixmap_new)(gtk2_window->window, width, height, -1);
        gtk2_black_pixmap = (*fp_gdk_pixmap_new)(gtk2_window->window, width, height, -1);

        gtk2_white_pixbuf = white;
        gtk2_black_pixbuf = black;

        gtk2_pixbuf_width = width;
        gtk2_pixbuf_height = height;
    }

    /* clear the pixmaps */
    gc = (*fp_gdk_gc_new)(gtk2_white_pixmap);
    (*fp_gdk_rgb_gc_set_foreground)(gc, 0xffffff);
    (*fp_gdk_draw_rectangle)(gtk2_white_pixmap, gc, TRUE, 0, 0, width, height);
    (*fp_g_object_unref)(gc);

    gc = (*fp_gdk_gc_new)(gtk2_black_pixmap);
    (*fp_gdk_rgb_gc_set_foreground)(gc, 0x000000);
    (*fp_gdk_draw_rectangle)(gtk2_black_pixmap, gc, TRUE, 0, 0, width, height);
    (*fp_g_object_unref)(gc);
}

/*
 * Restore image from white and black pixmaps and copy it into destination
 * buffer. This method compares two pixbufs taken from white and black
 * pixmaps and decodes color and alpha components. Pixbufs are RGB without
 * alpha, destination buffer is ABGR.
 *
 * The return value is the transparency type of the resulting image, either
 * one of java_awt_Transparency_OPAQUE, java_awt_Transparency_BITMASK, and
 * java_awt_Transparency_TRANSLUCENT.
 */
gint gtk2_copy_image(gint *dst, gint width, gint height)
{
    gint i, j, r, g, b;
    guchar *white, *black;
    gint stride, padding;
    gboolean is_opaque = TRUE;
    gboolean is_bitmask = TRUE;

    (*fp_gdk_pixbuf_get_from_drawable)(gtk2_white_pixbuf, gtk2_white_pixmap,
            NULL, 0, 0, 0, 0, width, height);
    (*fp_gdk_pixbuf_get_from_drawable)(gtk2_black_pixbuf, gtk2_black_pixmap,
            NULL, 0, 0, 0, 0, width, height);

    white = (*fp_gdk_pixbuf_get_pixels)(gtk2_white_pixbuf);
    black = (*fp_gdk_pixbuf_get_pixels)(gtk2_black_pixbuf);
    stride = (*fp_gdk_pixbuf_get_rowstride)(gtk2_black_pixbuf);
    padding = stride - width * 4;

    for (i = 0; i < height; i++) {
        for (j = 0; j < width; j++) {
            int r1 = *white++;
            int r2 = *black++;
            int alpha = 0xff + r2 - r1;

            switch (alpha) {
                case 0:       /* transparent pixel */
                    r = g = b = 0;
                    black += 3;
                    white += 3;
                    is_opaque = FALSE;
                    break;

                case 0xff:    /* opaque pixel */
                    r = r2;
                    g = *black++;
                    b = *black++;
                    black++;
                    white += 3;
                    break;

                default:      /* translucent pixel */
                    r = 0xff * r2 / alpha;
                    g = 0xff * *black++ / alpha;
                    b = 0xff * *black++ / alpha;
                    black++;
                    white += 3;
                    is_opaque = FALSE;
                    is_bitmask = FALSE;
                    break;
            }

            *dst++ = (alpha << 24 | r << 16 | g << 8 | b);
        }

        white += padding;
        black += padding;
    }
    return is_opaque ? java_awt_Transparency_OPAQUE :
                       (is_bitmask ? java_awt_Transparency_BITMASK :
                                     java_awt_Transparency_TRANSLUCENT);
}

static void
gtk2_set_direction(GtkWidget *widget, GtkTextDirection dir)
{
    /*
     * Some engines (inexplicably) look at the direction of the widget's
     * parent, so we need to set the direction of both the widget and its
     * parent.
     */
    (*fp_gtk_widget_set_direction)(widget, dir);
    if (widget->parent != NULL) {
        (*fp_gtk_widget_set_direction)(widget->parent, dir);
    }
}

/*
 * Initializes the widget to correct state for some engines.
 * This is a pure empirical method.
 */
static void init_toggle_widget(WidgetType widget_type, gint synth_state)
{
    gboolean is_active = ((synth_state & SELECTED) != 0);

    if (widget_type == RADIO_BUTTON ||
        widget_type == CHECK_BOX ||
        widget_type == TOGGLE_BUTTON) {
        ((GtkToggleButton*)gtk2_widget)->active = is_active;
    }

    if ((synth_state & FOCUSED) != 0) {
        ((GtkObject*)gtk2_widget)->flags |= GTK_HAS_FOCUS;
    } else {
        ((GtkObject*)gtk2_widget)->flags &= ~GTK_HAS_FOCUS;
    }

    if ((synth_state & MOUSE_OVER) != 0 && (synth_state & PRESSED) == 0 ||
           (synth_state & FOCUSED) != 0 && (synth_state & PRESSED) != 0) {
        gtk2_widget->state = GTK_STATE_PRELIGHT;
    } else if ((synth_state & DISABLED) != 0) {
        gtk2_widget->state = GTK_STATE_INSENSITIVE;
    } else {
        gtk2_widget->state = is_active ? GTK_STATE_ACTIVE : GTK_STATE_NORMAL;
    }
}

/* GTK state_type filter */
static GtkStateType get_gtk_state_type(WidgetType widget_type, gint synth_state)
{
    GtkStateType result = GTK_STATE_NORMAL;

    if ((synth_state & DISABLED) != 0) {
        result = GTK_STATE_INSENSITIVE;
    } else if ((synth_state & PRESSED) != 0) {
        result = GTK_STATE_ACTIVE;
    } else if ((synth_state & MOUSE_OVER) != 0) {
        result = GTK_STATE_PRELIGHT;
    }
    return result;
}

/* GTK shadow_type filter */
static GtkShadowType get_gtk_shadow_type(WidgetType widget_type, gint synth_state)
{
    GtkShadowType result = GTK_SHADOW_OUT;

    if ((synth_state & SELECTED) != 0) {
        result = GTK_SHADOW_IN;
    }
    return result;
}


static GtkWidget* gtk2_get_arrow(GtkArrowType arrow_type, GtkShadowType shadow_type)
{
    GtkWidget *arrow = NULL;
    if (NULL == gtk2_widgets[_GTK_ARROW_TYPE])
    {
        gtk2_widgets[_GTK_ARROW_TYPE] = (*fp_gtk_arrow_new)(arrow_type, shadow_type);
        (*fp_gtk_container_add)((GtkContainer *)gtk2_fixed, gtk2_widgets[_GTK_ARROW_TYPE]);
        (*fp_gtk_widget_realize)(gtk2_widgets[_GTK_ARROW_TYPE]);
    }
    arrow = gtk2_widgets[_GTK_ARROW_TYPE];

    (*fp_gtk_arrow_set)(arrow, arrow_type, shadow_type);
    return arrow;
}

static GtkAdjustment* create_adjustment()
{
    return (GtkAdjustment *)
            (*fp_gtk_adjustment_new)(50.0, 0.0, 100.0, 10.0, 20.0, 20.0);
}

/**
 * Returns a pointer to the cached native widget for the specified widget
 * type.
 */
static GtkWidget *gtk2_get_widget(WidgetType widget_type)
{
    gboolean init_result = FALSE;
    GtkWidget *result = NULL;
    switch (widget_type)
    {
        case BUTTON:
        case TABLE_HEADER:
            if (init_result = (NULL == gtk2_widgets[_GTK_BUTTON_TYPE]))
            {
                gtk2_widgets[_GTK_BUTTON_TYPE] = (*fp_gtk_button_new)();
            }
            result = gtk2_widgets[_GTK_BUTTON_TYPE];
            break;
        case CHECK_BOX:
            if (init_result = (NULL == gtk2_widgets[_GTK_CHECK_BUTTON_TYPE]))
            {
                gtk2_widgets[_GTK_CHECK_BUTTON_TYPE] =
                    (*fp_gtk_check_button_new)();
            }
            result = gtk2_widgets[_GTK_CHECK_BUTTON_TYPE];
            break;
        case CHECK_BOX_MENU_ITEM:
            if (init_result = (NULL == gtk2_widgets[_GTK_CHECK_MENU_ITEM_TYPE]))
            {
                gtk2_widgets[_GTK_CHECK_MENU_ITEM_TYPE] =
                    (*fp_gtk_check_menu_item_new)();
            }
            result = gtk2_widgets[_GTK_CHECK_MENU_ITEM_TYPE];
            break;
        /************************************************************
         *    Creation a dedicated color chooser is dangerous because
         * it deadlocks the EDT
         ************************************************************/
/*        case COLOR_CHOOSER:
            if (init_result =
                    (NULL == gtk2_widgets[_GTK_COLOR_SELECTION_DIALOG_TYPE]))
            {
                gtk2_widgets[_GTK_COLOR_SELECTION_DIALOG_TYPE] =
                    (*fp_gtk_color_selection_dialog_new)(NULL);
            }
            result = gtk2_widgets[_GTK_COLOR_SELECTION_DIALOG_TYPE];
            break;*/
        case COMBO_BOX:
            if (init_result = (NULL == gtk2_widgets[_GTK_COMBO_BOX_TYPE]))
            {
                gtk2_widgets[_GTK_COMBO_BOX_TYPE] =
                    (*fp_gtk_combo_box_new)();
            }
            result = gtk2_widgets[_GTK_COMBO_BOX_TYPE];
            break;
        case COMBO_BOX_ARROW_BUTTON:
            if (init_result =
                    (NULL == gtk2_widgets[_GTK_COMBO_BOX_ARROW_BUTTON_TYPE]))
            {
                gtk2_widgets[_GTK_COMBO_BOX_ARROW_BUTTON_TYPE] =
                     (*fp_gtk_toggle_button_new)();
            }
            result = gtk2_widgets[_GTK_COMBO_BOX_ARROW_BUTTON_TYPE];
            break;
        case COMBO_BOX_TEXT_FIELD:
            if (init_result =
                    (NULL == gtk2_widgets[_GTK_COMBO_BOX_TEXT_FIELD_TYPE]))
            {
                result = gtk2_widgets[_GTK_COMBO_BOX_TEXT_FIELD_TYPE] =
                     (*fp_gtk_entry_new)();

                GtkSettings* settings = fp_gtk_widget_get_settings(result);
                fp_g_object_set(settings, "gtk-cursor-blink", FALSE, NULL);
            }
            result = gtk2_widgets[_GTK_COMBO_BOX_TEXT_FIELD_TYPE];
            break;
        case DESKTOP_ICON:
        case INTERNAL_FRAME_TITLE_PANE:
        case LABEL:
            if (init_result = (NULL == gtk2_widgets[_GTK_LABEL_TYPE]))
            {
                gtk2_widgets[_GTK_LABEL_TYPE] =
                    (*fp_gtk_label_new)(NULL);
            }
            result = gtk2_widgets[_GTK_LABEL_TYPE];
            break;
        case DESKTOP_PANE:
        case PANEL:
        case ROOT_PANE:
            if (init_result = (NULL == gtk2_widgets[_GTK_CONTAINER_TYPE]))
            {
                /* There is no constructor for a container type.  I've
                 * chosen GtkFixed container since it has a default
                 * constructor.
                 */
                gtk2_widgets[_GTK_CONTAINER_TYPE] =
                    (*fp_gtk_fixed_new)();
            }
            result = gtk2_widgets[_GTK_CONTAINER_TYPE];
            break;
        case EDITOR_PANE:
        case TEXT_AREA:
        case TEXT_PANE:
            if (init_result = (NULL == gtk2_widgets[_GTK_TEXT_VIEW_TYPE]))
            {
                gtk2_widgets[_GTK_TEXT_VIEW_TYPE] =
                    (*fp_gtk_text_view_new)();
            }
            result = gtk2_widgets[_GTK_TEXT_VIEW_TYPE];
            break;
        case FORMATTED_TEXT_FIELD:
        case PASSWORD_FIELD:
        case TEXT_FIELD:
            if (init_result = (NULL == gtk2_widgets[_GTK_ENTRY_TYPE]))
            {
                gtk2_widgets[_GTK_ENTRY_TYPE] =
                    (*fp_gtk_entry_new)();

                GtkSettings* settings =
                    fp_gtk_widget_get_settings(gtk2_widgets[_GTK_ENTRY_TYPE]);
                fp_g_object_set(settings, "gtk-cursor-blink", FALSE, NULL);
            }
            result = gtk2_widgets[_GTK_ENTRY_TYPE];
            break;
        case HANDLE_BOX:
            if (init_result = (NULL == gtk2_widgets[_GTK_HANDLE_BOX_TYPE]))
            {
                gtk2_widgets[_GTK_HANDLE_BOX_TYPE] =
                    (*fp_gtk_handle_box_new)();
            }
            result = gtk2_widgets[_GTK_HANDLE_BOX_TYPE];
            break;
        case HSCROLL_BAR:
        case HSCROLL_BAR_BUTTON_LEFT:
        case HSCROLL_BAR_BUTTON_RIGHT:
        case HSCROLL_BAR_TRACK:
        case HSCROLL_BAR_THUMB:
            if (init_result = (NULL == gtk2_widgets[_GTK_HSCROLLBAR_TYPE]))
            {
                gtk2_widgets[_GTK_HSCROLLBAR_TYPE] =
                    (*fp_gtk_hscrollbar_new)(create_adjustment());
            }
            result = gtk2_widgets[_GTK_HSCROLLBAR_TYPE];
            break;
        case HSEPARATOR:
            if (init_result = (NULL == gtk2_widgets[_GTK_HSEPARATOR_TYPE]))
            {
                gtk2_widgets[_GTK_HSEPARATOR_TYPE] =
                    (*fp_gtk_hseparator_new)();
            }
            result = gtk2_widgets[_GTK_HSEPARATOR_TYPE];
            break;
        case HSLIDER:
        case HSLIDER_THUMB:
        case HSLIDER_TRACK:
            if (init_result = (NULL == gtk2_widgets[_GTK_HSCALE_TYPE]))
            {
                gtk2_widgets[_GTK_HSCALE_TYPE] =
                    (*fp_gtk_hscale_new)(NULL);
            }
            result = gtk2_widgets[_GTK_HSCALE_TYPE];
            break;
        case HSPLIT_PANE_DIVIDER:
        case SPLIT_PANE:
            if (init_result = (NULL == gtk2_widgets[_GTK_HPANED_TYPE]))
            {
                gtk2_widgets[_GTK_HPANED_TYPE] = (*fp_gtk_hpaned_new)();
            }
            result = gtk2_widgets[_GTK_HPANED_TYPE];
            break;
        case IMAGE:
            if (init_result = (NULL == gtk2_widgets[_GTK_IMAGE_TYPE]))
            {
                gtk2_widgets[_GTK_IMAGE_TYPE] = (*fp_gtk_image_new)();
            }
            result = gtk2_widgets[_GTK_IMAGE_TYPE];
            break;
        case INTERNAL_FRAME:
            if (init_result = (NULL == gtk2_widgets[_GTK_WINDOW_TYPE]))
            {
                gtk2_widgets[_GTK_WINDOW_TYPE] =
                    (*fp_gtk_window_new)(GTK_WINDOW_TOPLEVEL);
            }
            result = gtk2_widgets[_GTK_WINDOW_TYPE];
            break;
        case TOOL_TIP:
            if (init_result = (NULL == gtk2_widgets[_GTK_TOOLTIP_TYPE]))
            {
                result = (*fp_gtk_window_new)(GTK_WINDOW_TOPLEVEL);
                (*fp_gtk_widget_set_name)(result, "gtk-tooltips");
                gtk2_widgets[_GTK_TOOLTIP_TYPE] = result;
            }
            result = gtk2_widgets[_GTK_TOOLTIP_TYPE];
            break;
        case LIST:
        case TABLE:
        case TREE:
        case TREE_CELL:
            if (init_result = (NULL == gtk2_widgets[_GTK_TREE_VIEW_TYPE]))
            {
                gtk2_widgets[_GTK_TREE_VIEW_TYPE] =
                    (*fp_gtk_tree_view_new)();
            }
            result = gtk2_widgets[_GTK_TREE_VIEW_TYPE];
            break;
        case TITLED_BORDER:
            if (init_result = (NULL == gtk2_widgets[_GTK_FRAME_TYPE]))
            {
                gtk2_widgets[_GTK_FRAME_TYPE] = fp_gtk_frame_new(NULL);
            }
            result = gtk2_widgets[_GTK_FRAME_TYPE];
            break;
        case POPUP_MENU:
            if (init_result = (NULL == gtk2_widgets[_GTK_MENU_TYPE]))
            {
                gtk2_widgets[_GTK_MENU_TYPE] =
                    (*fp_gtk_menu_new)();
            }
            result = gtk2_widgets[_GTK_MENU_TYPE];
            break;
        case MENU:
        case MENU_ITEM:
        case MENU_ITEM_ACCELERATOR:
            if (init_result = (NULL == gtk2_widgets[_GTK_MENU_ITEM_TYPE]))
            {
                gtk2_widgets[_GTK_MENU_ITEM_TYPE] =
                    (*fp_gtk_menu_item_new)();
            }
            result = gtk2_widgets[_GTK_MENU_ITEM_TYPE];
            break;
        case MENU_BAR:
            if (init_result = (NULL == gtk2_widgets[_GTK_MENU_BAR_TYPE]))
            {
                gtk2_widgets[_GTK_MENU_BAR_TYPE] =
                    (*fp_gtk_menu_bar_new)();
            }
            result = gtk2_widgets[_GTK_MENU_BAR_TYPE];
            break;
        case COLOR_CHOOSER:
        case OPTION_PANE:
            if (init_result = (NULL == gtk2_widgets[_GTK_DIALOG_TYPE]))
            {
                gtk2_widgets[_GTK_DIALOG_TYPE] =
                    (*fp_gtk_dialog_new)();
            }
            result = gtk2_widgets[_GTK_DIALOG_TYPE];
            break;
        case POPUP_MENU_SEPARATOR:
            if (init_result =
                    (NULL == gtk2_widgets[_GTK_SEPARATOR_MENU_ITEM_TYPE]))
            {
                gtk2_widgets[_GTK_SEPARATOR_MENU_ITEM_TYPE] =
                    (*fp_gtk_separator_menu_item_new)();
            }
            result = gtk2_widgets[_GTK_SEPARATOR_MENU_ITEM_TYPE];
            break;
        case HPROGRESS_BAR:
            if (init_result = (NULL == gtk2_widgets[_GTK_HPROGRESS_BAR_TYPE]))
            {
                gtk2_widgets[_GTK_HPROGRESS_BAR_TYPE] =
                    (*fp_gtk_progress_bar_new)();
            }
            result = gtk2_widgets[_GTK_HPROGRESS_BAR_TYPE];
            break;
        case VPROGRESS_BAR:
            if (init_result = (NULL == gtk2_widgets[_GTK_VPROGRESS_BAR_TYPE]))
            {
                gtk2_widgets[_GTK_VPROGRESS_BAR_TYPE] =
                    (*fp_gtk_progress_bar_new)();
                /*
                 * Vertical JProgressBars always go bottom-to-top,
                 * regardless of the ComponentOrientation.
                 */
                (*fp_gtk_progress_bar_set_orientation)(
                    (GtkProgressBar *)gtk2_widgets[_GTK_VPROGRESS_BAR_TYPE],
                    GTK_PROGRESS_BOTTOM_TO_TOP);
            }
            result = gtk2_widgets[_GTK_VPROGRESS_BAR_TYPE];
            break;
        case RADIO_BUTTON:
            if (init_result = (NULL == gtk2_widgets[_GTK_RADIO_BUTTON_TYPE]))
            {
                gtk2_widgets[_GTK_RADIO_BUTTON_TYPE] =
                    (*fp_gtk_radio_button_new)(NULL);
            }
            result = gtk2_widgets[_GTK_RADIO_BUTTON_TYPE];
            break;
        case RADIO_BUTTON_MENU_ITEM:
            if (init_result =
                    (NULL == gtk2_widgets[_GTK_RADIO_MENU_ITEM_TYPE]))
            {
                gtk2_widgets[_GTK_RADIO_MENU_ITEM_TYPE] =
                    (*fp_gtk_radio_menu_item_new)(NULL);
            }
            result = gtk2_widgets[_GTK_RADIO_MENU_ITEM_TYPE];
            break;
        case SCROLL_PANE:
            if (init_result =
                    (NULL == gtk2_widgets[_GTK_SCROLLED_WINDOW_TYPE]))
            {
                gtk2_widgets[_GTK_SCROLLED_WINDOW_TYPE] =
                    (*fp_gtk_scrolled_window_new)(NULL, NULL);
            }
            result = gtk2_widgets[_GTK_SCROLLED_WINDOW_TYPE];
            break;
        case SPINNER:
        case SPINNER_ARROW_BUTTON:
        case SPINNER_TEXT_FIELD:
            if (init_result = (NULL == gtk2_widgets[_GTK_SPIN_BUTTON_TYPE]))
            {
                result = gtk2_widgets[_GTK_SPIN_BUTTON_TYPE] =
                    (*fp_gtk_spin_button_new)(NULL, 0, 0);

                GtkSettings* settings = fp_gtk_widget_get_settings(result);
                fp_g_object_set(settings, "gtk-cursor-blink", FALSE, NULL);
            }
            result = gtk2_widgets[_GTK_SPIN_BUTTON_TYPE];
            break;
        case TABBED_PANE:
        case TABBED_PANE_TAB_AREA:
        case TABBED_PANE_CONTENT:
        case TABBED_PANE_TAB:
            if (init_result = (NULL == gtk2_widgets[_GTK_NOTEBOOK_TYPE]))
            {
                gtk2_widgets[_GTK_NOTEBOOK_TYPE] =
                    (*fp_gtk_notebook_new)(NULL);
            }
            result = gtk2_widgets[_GTK_NOTEBOOK_TYPE];
            break;
        case TOGGLE_BUTTON:
            if (init_result = (NULL == gtk2_widgets[_GTK_TOGGLE_BUTTON_TYPE]))
            {
                gtk2_widgets[_GTK_TOGGLE_BUTTON_TYPE] =
                    (*fp_gtk_toggle_button_new)(NULL);
            }
            result = gtk2_widgets[_GTK_TOGGLE_BUTTON_TYPE];
            break;
        case TOOL_BAR:
        case TOOL_BAR_DRAG_WINDOW:
            if (init_result = (NULL == gtk2_widgets[_GTK_TOOLBAR_TYPE]))
            {
                gtk2_widgets[_GTK_TOOLBAR_TYPE] =
                    (*fp_gtk_toolbar_new)(NULL);
            }
            result = gtk2_widgets[_GTK_TOOLBAR_TYPE];
            break;
        case TOOL_BAR_SEPARATOR:
            if (init_result =
                    (NULL == gtk2_widgets[_GTK_SEPARATOR_TOOL_ITEM_TYPE]))
            {
                gtk2_widgets[_GTK_SEPARATOR_TOOL_ITEM_TYPE] =
                    (*fp_gtk_separator_tool_item_new)();
            }
            result = gtk2_widgets[_GTK_SEPARATOR_TOOL_ITEM_TYPE];
            break;
        case VIEWPORT:
            if (init_result = (NULL == gtk2_widgets[_GTK_VIEWPORT_TYPE]))
            {
                GtkAdjustment *adjustment = create_adjustment();
                gtk2_widgets[_GTK_VIEWPORT_TYPE] =
                    (*fp_gtk_viewport_new)(adjustment, adjustment);
            }
            result = gtk2_widgets[_GTK_VIEWPORT_TYPE];
            break;
        case VSCROLL_BAR:
        case VSCROLL_BAR_BUTTON_UP:
        case VSCROLL_BAR_BUTTON_DOWN:
        case VSCROLL_BAR_TRACK:
        case VSCROLL_BAR_THUMB:
            if (init_result = (NULL == gtk2_widgets[_GTK_VSCROLLBAR_TYPE]))
            {
                gtk2_widgets[_GTK_VSCROLLBAR_TYPE] =
                    (*fp_gtk_vscrollbar_new)(create_adjustment());
            }
            result = gtk2_widgets[_GTK_VSCROLLBAR_TYPE];
            break;
        case VSEPARATOR:
            if (init_result = (NULL == gtk2_widgets[_GTK_VSEPARATOR_TYPE]))
            {
                gtk2_widgets[_GTK_VSEPARATOR_TYPE] =
                    (*fp_gtk_vseparator_new)();
            }
            result = gtk2_widgets[_GTK_VSEPARATOR_TYPE];
            break;
        case VSLIDER:
        case VSLIDER_THUMB:
        case VSLIDER_TRACK:
            if (init_result = (NULL == gtk2_widgets[_GTK_VSCALE_TYPE]))
            {
                gtk2_widgets[_GTK_VSCALE_TYPE] =
                    (*fp_gtk_vscale_new)(NULL);
            }
            result = gtk2_widgets[_GTK_VSCALE_TYPE];
            /*
             * Vertical JSliders start at the bottom, while vertical
             * GtkVScale widgets start at the top (by default), so to fix
             * this we set the "inverted" flag to get the Swing behavior.
             */
            ((GtkRange*)result)->inverted = 1;
            break;
        case VSPLIT_PANE_DIVIDER:
            if (init_result = (NULL == gtk2_widgets[_GTK_VPANED_TYPE]))
            {
                gtk2_widgets[_GTK_VPANED_TYPE] = (*fp_gtk_vpaned_new)();
            }
            result = gtk2_widgets[_GTK_VPANED_TYPE];
            break;
        default:
            result = NULL;
            break;
    }

    if (result != NULL && init_result)
    {
        if (widget_type == RADIO_BUTTON_MENU_ITEM ||
                widget_type == CHECK_BOX_MENU_ITEM ||
                widget_type == MENU_ITEM ||
                widget_type == MENU ||
                widget_type == POPUP_MENU_SEPARATOR)
        {
            GtkWidget *menu = gtk2_get_widget(POPUP_MENU);
            (*fp_gtk_menu_shell_append)((GtkMenuShell *)menu, result);
        }
        else if (widget_type == POPUP_MENU)
        {
            GtkWidget *menu_bar = gtk2_get_widget(MENU_BAR);
            GtkWidget *root_menu = (*fp_gtk_menu_item_new)();
            (*fp_gtk_menu_item_set_submenu)((GtkMenuItem*)root_menu, result);
            (*fp_gtk_menu_shell_append)((GtkMenuShell *)menu_bar, root_menu);
        }
        else if (widget_type == COMBO_BOX_ARROW_BUTTON ||
                 widget_type == COMBO_BOX_TEXT_FIELD)
        {
            /*
            * We add a regular GtkButton/GtkEntry to a GtkComboBoxEntry
            * in order to trick engines into thinking it's a real combobox
            * arrow button/text field.
            */
            GtkWidget *combo = (*fp_gtk_combo_box_entry_new)();

            if (new_combo && widget_type == COMBO_BOX_ARROW_BUTTON) {
                (*fp_gtk_widget_set_parent)(result, combo);
                ((GtkBin*)combo)->child = result;
            } else {
                (*fp_gtk_container_add)((GtkContainer *)combo, result);
            }
            (*fp_gtk_container_add)((GtkContainer *)gtk2_fixed, combo);
        }
        else if (widget_type != TOOL_TIP &&
                 widget_type != INTERNAL_FRAME &&
                 widget_type != OPTION_PANE)
        {
            (*fp_gtk_container_add)((GtkContainer *)gtk2_fixed, result);
        }
        (*fp_gtk_widget_realize)(result);
    }
    return result;
}

void gtk2_paint_arrow(WidgetType widget_type, GtkStateType state_type,
        GtkShadowType shadow_type, const gchar *detail,
        gint x, gint y, gint width, gint height,
        GtkArrowType arrow_type, gboolean fill)
{
    static int w, h;
    static GtkRequisition size;

    if (widget_type == COMBO_BOX_ARROW_BUTTON || widget_type == TABLE)
        gtk2_widget = gtk2_get_arrow(arrow_type, shadow_type);
    else
        gtk2_widget = gtk2_get_widget(widget_type);

    switch (widget_type)
    {
        case SPINNER_ARROW_BUTTON:
            x = 1;
            y = ((arrow_type == GTK_ARROW_UP) ? 2 : 0);
            height -= 2;
            width -= 3;

            w = width / 2;
            w -= w % 2 - 1;
            h = (w + 1) / 2;
            break;

        case HSCROLL_BAR_BUTTON_LEFT:
        case HSCROLL_BAR_BUTTON_RIGHT:
        case VSCROLL_BAR_BUTTON_UP:
        case VSCROLL_BAR_BUTTON_DOWN:
            w = width / 2;
            h = height / 2;
            break;

        case COMBO_BOX_ARROW_BUTTON:
        case TABLE:
            x = 1;
            (*fp_gtk_widget_size_request)(gtk2_widget, &size);
            w = size.width - ((GtkMisc*)gtk2_widget)->xpad * 2;
            h = size.height - ((GtkMisc*)gtk2_widget)->ypad * 2;
            w = h = MIN(MIN(w, h), MIN(width,height)) * 0.7;
            break;

        default:
            w = width;
            h = height;
            break;
    }
    x += (width - w) / 2;
    y += (height - h) / 2;

    (*fp_gtk_paint_arrow)(gtk2_widget->style, gtk2_white_pixmap, state_type,
            shadow_type, NULL, gtk2_widget, detail, arrow_type, fill,
            x, y, w, h);
    (*fp_gtk_paint_arrow)(gtk2_widget->style, gtk2_black_pixmap, state_type,
            shadow_type, NULL, gtk2_widget, detail, arrow_type, fill,
            x, y, w, h);
}

void gtk2_paint_box(WidgetType widget_type, GtkStateType state_type,
                    GtkShadowType shadow_type, const gchar *detail,
                    gint x, gint y, gint width, gint height,
                    gint synth_state, GtkTextDirection dir)
{
    gtk2_widget = gtk2_get_widget(widget_type);

    /*
     * The clearlooks engine sometimes looks at the widget's state field
     * instead of just the state_type variable that we pass in, so to account
     * for those cases we set the widget's state field accordingly.  The
     * flags field is similarly important for things like focus/default state.
     */
    gtk2_widget->state = state_type;

    if (widget_type == HSLIDER_TRACK) {
        /*
         * For horizontal JSliders with right-to-left orientation, we need
         * to set the "inverted" flag to match the native GTK behavior where
         * the foreground highlight is on the right side of the slider thumb.
         * This is needed especially for the ubuntulooks engine, which looks
         * exclusively at the "inverted" flag to determine on which side of
         * the thumb to paint the highlight...
         */
        ((GtkRange*)gtk2_widget)->inverted = (dir == GTK_TEXT_DIR_RTL);

        /*
         * Note however that other engines like clearlooks will look at both
         * the "inverted" field and the text direction to determine how
         * the foreground highlight is painted:
         *     !inverted && ltr --> paint highlight on left side
         *     !inverted && rtl --> paint highlight on right side
         *      inverted && ltr --> paint highlight on right side
         *      inverted && rtl --> paint highlight on left side
         * So the only way to reliably get the desired results for horizontal
         * JSlider (i.e., highlight on left side for LTR ComponentOrientation
         * and highlight on right side for RTL ComponentOrientation) is to
         * always override text direction as LTR, and then set the "inverted"
         * flag accordingly (as we have done above).
         */
        dir = GTK_TEXT_DIR_LTR;
    }

    /*
     * Some engines (e.g. clearlooks) will paint the shadow of certain
     * widgets (e.g. COMBO_BOX_ARROW_BUTTON) differently depending on the
     * the text direction.
     */
    gtk2_set_direction(gtk2_widget, dir);

    switch (widget_type) {
    case BUTTON:
        if (synth_state & DEFAULT) {
            ((GtkObject*)gtk2_widget)->flags |= GTK_HAS_DEFAULT;
        } else {
            ((GtkObject*)gtk2_widget)->flags &= ~GTK_HAS_DEFAULT;
        }
        break;
    case TOGGLE_BUTTON:
        init_toggle_widget(widget_type, synth_state);
        break;
    case HSCROLL_BAR_BUTTON_LEFT:
        /*
         * The clearlooks engine will draw a "left" button when:
         *   x == w->allocation.x
         *
         * The ubuntulooks engine will draw a "left" button when:
         *   [x,y,width,height]
         *     intersects
         *   [w->alloc.x,w->alloc.y,width,height]
         *
         * The values that are set below should ensure that a "left"
         * button is rendered for both of these (and other) engines.
         */
        gtk2_widget->allocation.x = x;
        gtk2_widget->allocation.y = y;
        gtk2_widget->allocation.width = width;
        gtk2_widget->allocation.height = height;
        break;
    case HSCROLL_BAR_BUTTON_RIGHT:
        /*
         * The clearlooks engine will draw a "right" button when:
         *   x + width == w->allocation.x + w->allocation.width
         *
         * The ubuntulooks engine will draw a "right" button when:
         *   [x,y,width,height]
         *     does not intersect
         *   [w->alloc.x,w->alloc.y,width,height]
         *     but does intersect
         *   [w->alloc.x+width,w->alloc.y,width,height]
         *
         * The values that are set below should ensure that a "right"
         * button is rendered for both of these (and other) engines.
         */
        gtk2_widget->allocation.x = x+width;
        gtk2_widget->allocation.y = 0;
        gtk2_widget->allocation.width = 0;
        gtk2_widget->allocation.height = height;
        break;
    case VSCROLL_BAR_BUTTON_UP:
        /*
         * The clearlooks engine will draw an "up" button when:
         *   y == w->allocation.y
         *
         * The ubuntulooks engine will draw an "up" button when:
         *   [x,y,width,height]
         *     intersects
         *   [w->alloc.x,w->alloc.y,width,height]
         *
         * The values that are set below should ensure that an "up"
         * button is rendered for both of these (and other) engines.
         */
        gtk2_widget->allocation.x = x;
        gtk2_widget->allocation.y = y;
        gtk2_widget->allocation.width = width;
        gtk2_widget->allocation.height = height;
        break;
    case VSCROLL_BAR_BUTTON_DOWN:
        /*
         * The clearlooks engine will draw a "down" button when:
         *   y + height == w->allocation.y + w->allocation.height
         *
         * The ubuntulooks engine will draw a "down" button when:
         *   [x,y,width,height]
         *     does not intersect
         *   [w->alloc.x,w->alloc.y,width,height]
         *     but does intersect
         *   [w->alloc.x,w->alloc.y+height,width,height]
         *
         * The values that are set below should ensure that a "down"
         * button is rendered for both of these (and other) engines.
         */
        gtk2_widget->allocation.x = x;
        gtk2_widget->allocation.y = y+height;
        gtk2_widget->allocation.width = width;
        gtk2_widget->allocation.height = 0;
        break;
    default:
        break;
    }

    (*fp_gtk_paint_box)(gtk2_widget->style, gtk2_white_pixmap, state_type,
            shadow_type, NULL, gtk2_widget, detail, x, y, width, height);
    (*fp_gtk_paint_box)(gtk2_widget->style, gtk2_black_pixmap, state_type,
            shadow_type, NULL, gtk2_widget, detail, x, y, width, height);

    /*
     * Reset the text direction to the default value so that we don't
     * accidentally affect other operations and widgets.
     */
    gtk2_set_direction(gtk2_widget, GTK_TEXT_DIR_LTR);
}

void gtk2_paint_box_gap(WidgetType widget_type, GtkStateType state_type,
        GtkShadowType shadow_type, const gchar *detail,
        gint x, gint y, gint width, gint height,
        GtkPositionType gap_side, gint gap_x, gint gap_width)
{
    /* Clearlooks needs a real clip area to paint the gap properly */
    GdkRectangle area = { x, y, width, height };

    gtk2_widget = gtk2_get_widget(widget_type);
    (*fp_gtk_paint_box_gap)(gtk2_widget->style, gtk2_white_pixmap, state_type,
            shadow_type, &area, gtk2_widget, detail,
            x, y, width, height, gap_side, gap_x, gap_width);
    (*fp_gtk_paint_box_gap)(gtk2_widget->style, gtk2_black_pixmap, state_type,
            shadow_type, &area, gtk2_widget, detail,
            x, y, width, height, gap_side, gap_x, gap_width);
}

void gtk2_paint_check(WidgetType widget_type, gint synth_state,
        const gchar *detail, gint x, gint y, gint width, gint height)
{
    GtkStateType state_type = get_gtk_state_type(widget_type, synth_state);
    GtkShadowType shadow_type = get_gtk_shadow_type(widget_type, synth_state);

    gtk2_widget = gtk2_get_widget(widget_type);
    init_toggle_widget(widget_type, synth_state);

    (*fp_gtk_paint_check)(gtk2_widget->style, gtk2_white_pixmap, state_type,
            shadow_type, NULL, gtk2_widget, detail,
            x, y, width, height);
    (*fp_gtk_paint_check)(gtk2_widget->style, gtk2_black_pixmap, state_type,
            shadow_type, NULL, gtk2_widget, detail,
            x, y, width, height);
}

void gtk2_paint_diamond(WidgetType widget_type, GtkStateType state_type,
        GtkShadowType shadow_type, const gchar *detail,
        gint x, gint y, gint width, gint height)
{
    gtk2_widget = gtk2_get_widget(widget_type);
    (*fp_gtk_paint_diamond)(gtk2_widget->style, gtk2_white_pixmap, state_type,
            shadow_type, NULL, gtk2_widget, detail,
            x, y, width, height);
    (*fp_gtk_paint_diamond)(gtk2_widget->style, gtk2_black_pixmap, state_type,
            shadow_type, NULL, gtk2_widget, detail,
            x, y, width, height);
}

void gtk2_paint_expander(WidgetType widget_type, GtkStateType state_type,
        const gchar *detail, gint x, gint y, gint width, gint height,
        GtkExpanderStyle expander_style)
{
    gtk2_widget = gtk2_get_widget(widget_type);
    (*fp_gtk_paint_expander)(gtk2_widget->style, gtk2_white_pixmap,
            state_type, NULL, gtk2_widget, detail,
            x + width / 2, y + height / 2, expander_style);
    (*fp_gtk_paint_expander)(gtk2_widget->style, gtk2_black_pixmap,
            state_type, NULL, gtk2_widget, detail,
            x + width / 2, y + height / 2, expander_style);
}

void gtk2_paint_extension(WidgetType widget_type, GtkStateType state_type,
        GtkShadowType shadow_type, const gchar *detail,
        gint x, gint y, gint width, gint height, GtkPositionType gap_side)
{
    gtk2_widget = gtk2_get_widget(widget_type);
    (*fp_gtk_paint_extension)(gtk2_widget->style, gtk2_white_pixmap,
            state_type, shadow_type, NULL, gtk2_widget, detail,
            x, y, width, height, gap_side);
    (*fp_gtk_paint_extension)(gtk2_widget->style, gtk2_black_pixmap,
            state_type, shadow_type, NULL, gtk2_widget, detail,
            x, y, width, height, gap_side);
}

void gtk2_paint_flat_box(WidgetType widget_type, GtkStateType state_type,
        GtkShadowType shadow_type, const gchar *detail,
        gint x, gint y, gint width, gint height, gboolean has_focus)
{
    gtk2_widget = gtk2_get_widget(widget_type);

    if (has_focus)
        ((GtkObject*)gtk2_widget)->flags |= GTK_HAS_FOCUS;
    else
        ((GtkObject*)gtk2_widget)->flags &= ~GTK_HAS_FOCUS;

    (*fp_gtk_paint_flat_box)(gtk2_widget->style, gtk2_white_pixmap,
            state_type, shadow_type, NULL, gtk2_widget, detail,
            x, y, width, height);
    (*fp_gtk_paint_flat_box)(gtk2_widget->style, gtk2_black_pixmap,
            state_type, shadow_type, NULL, gtk2_widget, detail,
            x, y, width, height);
}

void gtk2_paint_focus(WidgetType widget_type, GtkStateType state_type,
        const char *detail, gint x, gint y, gint width, gint height)
{
    gtk2_widget = gtk2_get_widget(widget_type);
    (*fp_gtk_paint_focus)(gtk2_widget->style, gtk2_white_pixmap, state_type,
            NULL, gtk2_widget, detail, x, y, width, height);
    (*fp_gtk_paint_focus)(gtk2_widget->style, gtk2_black_pixmap, state_type,
            NULL, gtk2_widget, detail, x, y, width, height);
}

void gtk2_paint_handle(WidgetType widget_type, GtkStateType state_type,
        GtkShadowType shadow_type, const gchar *detail,
        gint x, gint y, gint width, gint height, GtkOrientation orientation)
{
    gtk2_widget = gtk2_get_widget(widget_type);
    (*fp_gtk_paint_handle)(gtk2_widget->style, gtk2_white_pixmap, state_type,
            shadow_type, NULL, gtk2_widget, detail,
            x, y, width, height, orientation);
    (*fp_gtk_paint_handle)(gtk2_widget->style, gtk2_black_pixmap, state_type,
            shadow_type, NULL, gtk2_widget, detail,
            x, y, width, height, orientation);
}

void gtk2_paint_hline(WidgetType widget_type, GtkStateType state_type,
        const gchar *detail, gint x, gint y, gint width, gint height)
{
    gtk2_widget = gtk2_get_widget(widget_type);
    (*fp_gtk_paint_hline)(gtk2_widget->style, gtk2_white_pixmap, state_type,
            NULL, gtk2_widget, detail, x, x + width, y);
    (*fp_gtk_paint_hline)(gtk2_widget->style, gtk2_black_pixmap, state_type,
            NULL, gtk2_widget, detail, x, x + width, y);
}

void gtk2_paint_option(WidgetType widget_type, gint synth_state,
        const gchar *detail, gint x, gint y, gint width, gint height)
{
    GtkStateType state_type = get_gtk_state_type(widget_type, synth_state);
    GtkShadowType shadow_type = get_gtk_shadow_type(widget_type, synth_state);

    gtk2_widget = gtk2_get_widget(widget_type);
    init_toggle_widget(widget_type, synth_state);

    (*fp_gtk_paint_option)(gtk2_widget->style, gtk2_white_pixmap, state_type,
            shadow_type, NULL, gtk2_widget, detail,
            x, y, width, height);
    (*fp_gtk_paint_option)(gtk2_widget->style, gtk2_black_pixmap, state_type,
            shadow_type, NULL, gtk2_widget, detail,
            x, y, width, height);
}

void gtk2_paint_shadow(WidgetType widget_type, GtkStateType state_type,
                       GtkShadowType shadow_type, const gchar *detail,
                       gint x, gint y, gint width, gint height,
                       gint synth_state, GtkTextDirection dir)
{
    gtk2_widget = gtk2_get_widget(widget_type);

    /*
     * The clearlooks engine sometimes looks at the widget's state field
     * instead of just the state_type variable that we pass in, so to account
     * for those cases we set the widget's state field accordingly.  The
     * flags field is similarly important for things like focus state.
     */
    gtk2_widget->state = state_type;

    /*
     * Some engines (e.g. clearlooks) will paint the shadow of certain
     * widgets (e.g. COMBO_BOX_TEXT_FIELD) differently depending on the
     * the text direction.
     */
    gtk2_set_direction(gtk2_widget, dir);

    switch (widget_type) {
    case COMBO_BOX_TEXT_FIELD:
    case FORMATTED_TEXT_FIELD:
    case PASSWORD_FIELD:
    case SPINNER_TEXT_FIELD:
    case TEXT_FIELD:
        if (synth_state & FOCUSED) {
            ((GtkObject*)gtk2_widget)->flags |= GTK_HAS_FOCUS;
        } else {
            ((GtkObject*)gtk2_widget)->flags &= ~GTK_HAS_FOCUS;
        }
        break;
    default:
        break;
    }

    (*fp_gtk_paint_shadow)(gtk2_widget->style, gtk2_white_pixmap, state_type,
            shadow_type, NULL, gtk2_widget, detail, x, y, width, height);
    (*fp_gtk_paint_shadow)(gtk2_widget->style, gtk2_black_pixmap, state_type,
            shadow_type, NULL, gtk2_widget, detail, x, y, width, height);

    /*
     * Reset the text direction to the default value so that we don't
     * accidentally affect other operations and widgets.
     */
    gtk2_set_direction(gtk2_widget, GTK_TEXT_DIR_LTR);
}

void gtk2_paint_slider(WidgetType widget_type, GtkStateType state_type,
        GtkShadowType shadow_type, const gchar *detail,
        gint x, gint y, gint width, gint height, GtkOrientation orientation)
{
    gtk2_widget = gtk2_get_widget(widget_type);
    (*fp_gtk_paint_slider)(gtk2_widget->style, gtk2_white_pixmap, state_type,
            shadow_type, NULL, gtk2_widget, detail,
            x, y, width, height, orientation);
    (*fp_gtk_paint_slider)(gtk2_widget->style, gtk2_black_pixmap, state_type,
            shadow_type, NULL, gtk2_widget, detail,
            x, y, width, height, orientation);
}

void gtk2_paint_vline(WidgetType widget_type, GtkStateType state_type,
        const gchar *detail, gint x, gint y, gint width, gint height)
{
    gtk2_widget = gtk2_get_widget(widget_type);
    (*fp_gtk_paint_vline)(gtk2_widget->style, gtk2_white_pixmap, state_type,
            NULL, gtk2_widget, detail, y, y + height, x);
    (*fp_gtk_paint_vline)(gtk2_widget->style, gtk2_black_pixmap, state_type,
            NULL, gtk2_widget, detail, y, y + height, x);
}

void gtk_paint_background(WidgetType widget_type, GtkStateType state_type,
        gint x, gint y, gint width, gint height)
{
    gtk2_widget = gtk2_get_widget(widget_type);
    (*fp_gtk_style_apply_default_background)(gtk2_widget->style,
            gtk2_white_pixmap, TRUE, state_type, NULL, x, y, width, height);
    (*fp_gtk_style_apply_default_background)(gtk2_widget->style,
            gtk2_black_pixmap, TRUE, state_type, NULL, x, y, width, height);
}

GdkPixbuf *gtk2_get_stock_icon(gint widget_type, const gchar *stock_id,
        GtkIconSize size, GtkTextDirection direction, const char *detail)
{
    init_containers();
    gtk2_widget = gtk2_get_widget((widget_type < 0) ? IMAGE : widget_type);
    gtk2_widget->state = GTK_STATE_NORMAL;
    (*fp_gtk_widget_set_direction)(gtk2_widget, direction);
    return (*fp_gtk_widget_render_icon)(gtk2_widget, stock_id, size, detail);
}

/*************************************************/
gint gtk2_get_xthickness(JNIEnv *env, WidgetType widget_type)
{
    init_containers();

    gtk2_widget = gtk2_get_widget(widget_type);
    GtkStyle* style = gtk2_widget->style;
    return style->xthickness;
}

gint gtk2_get_ythickness(JNIEnv *env, WidgetType widget_type)
{
    init_containers();

    gtk2_widget = gtk2_get_widget(widget_type);
    GtkStyle* style = gtk2_widget->style;
    return style->ythickness;
}

/*************************************************/
guint8 recode_color(guint16 channel)
{
    return (guint8)(channel>>8);
}

gint gtk2_get_color_for_state(JNIEnv *env, WidgetType widget_type,
                              GtkStateType state_type, ColorType color_type)
{
    gint result = 0;
    GdkColor *color = NULL;

    init_containers();

    gtk2_widget = gtk2_get_widget(widget_type);
    GtkStyle* style = gtk2_widget->style;

    switch (color_type)
    {
        case FOREGROUND:
            color = &(style->fg[state_type]);
            break;
        case BACKGROUND:
            color = &(style->bg[state_type]);
            break;
        case TEXT_FOREGROUND:
            color = &(style->text[state_type]);
            break;
        case TEXT_BACKGROUND:
            color = &(style->base[state_type]);
            break;
        case LIGHT:
            color = &(style->light[state_type]);
            break;
        case DARK:
            color = &(style->dark[state_type]);
            break;
        case MID:
            color = &(style->mid[state_type]);
            break;
        case FOCUS:
        case BLACK:
            color = &(style->black);
            break;
        case WHITE:
            color = &(style->white);
            break;
    }

    if (color)
        result = recode_color(color->red)   << 16 |
                 recode_color(color->green) << 8  |
                 recode_color(color->blue);

    return result;
}

/*************************************************/
jobject create_Boolean(JNIEnv *env, jboolean boolean_value);
jobject create_Integer(JNIEnv *env, jint int_value);
jobject create_Long(JNIEnv *env, jlong long_value);
jobject create_Float(JNIEnv *env, jfloat float_value);
jobject create_Double(JNIEnv *env, jdouble double_value);
jobject create_Character(JNIEnv *env, jchar char_value);
jobject create_Insets(JNIEnv *env, GtkBorder *border);

jobject gtk2_get_class_value(JNIEnv *env, WidgetType widget_type, jstring jkey)
{
    init_containers();

    const char* key = getStrFor(env, jkey);
    gtk2_widget = gtk2_get_widget(widget_type);

    GValue value;
    value.g_type = 0;

    GParamSpec* param = (*fp_gtk_widget_class_find_style_property)(
                                    ((GTypeInstance*)gtk2_widget)->g_class, key);
    if( param )
    {
        (*fp_g_value_init)( &value, param->value_type );
        (*fp_gtk_widget_style_get_property)(gtk2_widget, key, &value);

        if( (*fp_g_type_is_a)( param->value_type, G_TYPE_BOOLEAN ))
        {
            gboolean val = (*fp_g_value_get_boolean)(&value);
            return create_Boolean(env, (jboolean)val);
        }
        else if( (*fp_g_type_is_a)( param->value_type, G_TYPE_CHAR ))
        {
            gchar val = (*fp_g_value_get_char)(&value);
            return create_Character(env, (jchar)val);
        }
        else if( (*fp_g_type_is_a)( param->value_type, G_TYPE_UCHAR ))
        {
            guchar val = (*fp_g_value_get_uchar)(&value);
            return create_Character(env, (jchar)val);
        }
        else if( (*fp_g_type_is_a)( param->value_type, G_TYPE_INT ))
        {
            gint val = (*fp_g_value_get_int)(&value);
            return create_Integer(env, (jint)val);
        }
        else if( (*fp_g_type_is_a)( param->value_type, G_TYPE_UINT ))
        {
            guint val = (*fp_g_value_get_uint)(&value);
            return create_Integer(env, (jint)val);
        }
        else if( (*fp_g_type_is_a)( param->value_type, G_TYPE_LONG ))
        {
            glong val = (*fp_g_value_get_long)(&value);
            return create_Long(env, (jlong)val);
        }
        else if( (*fp_g_type_is_a)( param->value_type, G_TYPE_ULONG ))
        {
            gulong val = (*fp_g_value_get_ulong)(&value);
            return create_Long(env, (jlong)val);
        }
        else if( (*fp_g_type_is_a)( param->value_type, G_TYPE_INT64 ))
        {
            gint64 val = (*fp_g_value_get_int64)(&value);
            return create_Long(env, (jlong)val);
        }
        else if( (*fp_g_type_is_a)( param->value_type, G_TYPE_UINT64 ))
        {
            guint64 val = (*fp_g_value_get_uint64)(&value);
            return create_Long(env, (jlong)val);
        }
        else if( (*fp_g_type_is_a)( param->value_type, G_TYPE_FLOAT ))
        {
            gfloat val = (*fp_g_value_get_float)(&value);
            return create_Float(env, (jfloat)val);
        }
        else if( (*fp_g_type_is_a)( param->value_type, G_TYPE_DOUBLE ))
        {
            gdouble val = (*fp_g_value_get_double)(&value);
            return create_Double(env, (jdouble)val);
        }
        else if( (*fp_g_type_is_a)( param->value_type, G_TYPE_ENUM ))
        {
            gint val = (*fp_g_value_get_enum)(&value);
            return create_Integer(env, (jint)val);
        }
        else if( (*fp_g_type_is_a)( param->value_type, G_TYPE_FLAGS ))
        {
            guint val = (*fp_g_value_get_flags)(&value);
            return create_Integer(env, (jint)val);
        }
        else if( (*fp_g_type_is_a)( param->value_type, G_TYPE_STRING ))
        {
            const gchar* val = (*fp_g_value_get_string)(&value);

            /* We suppose that all values come in C locale and
             * utf-8 representation of a string is the same as
             * the string itself. If this isn't so we should
             * use g_convert.
             */
            return (*env)->NewStringUTF(env, val);
        }
        else if( (*fp_g_type_is_a)( param->value_type, GTK_TYPE_BORDER ))
        {
            GtkBorder *border = (GtkBorder*)(*fp_g_value_get_boxed)(&value);
            return border ? create_Insets(env, border) : NULL;
        }

        /*      TODO: Other types are not supported yet.*/
/*        else if( (*fp_g_type_is_a)( param->value_type, G_TYPE_PARAM ))
        {
            GParamSpec* val = (*fp_g_value_get_param)(&value);
            printf( "Param: %p\n", val );
        }
        else if( (*fp_g_type_is_a)( param->value_type, G_TYPE_BOXED ))
        {
            gpointer* val = (*fp_g_value_get_boxed)(&value);
            printf( "Boxed: %p\n", val );
        }
        else if( (*fp_g_type_is_a)( param->value_type, G_TYPE_POINTER ))
        {
            gpointer* val = (*fp_g_value_get_pointer)(&value);
            printf( "Pointer: %p\n", val );
        }
        else if( (*fp_g_type_is_a)( param->value_type, G_TYPE_OBJECT ))
        {
            GObject* val = (GObject*)(*fp_g_value_get_object)(&value);
            printf( "Object: %p\n", val );
        }*/
    }

    return NULL;
}

void gtk2_set_range_value(WidgetType widget_type, jdouble value,
                          jdouble min, jdouble max, jdouble visible)
{
    GtkAdjustment *adj;

    gtk2_widget = gtk2_get_widget(widget_type);

    adj = (*fp_gtk_range_get_adjustment)((GtkRange *)gtk2_widget);
    adj->value = (gdouble)value;
    adj->lower = (gdouble)min;
    adj->upper = (gdouble)max;
    adj->page_size = (gdouble)visible;
}

/*************************************************/
jobject create_Object(JNIEnv *env, jmethodID *cid,
                             const char* class_name,
                             const char* signature,
                             jvalue* value)
{
    jclass  class;
    jobject result;

    class = (*env)->FindClass(env, class_name);
    if( class == NULL )
        return NULL; /* can't find/load the class, exception thrown */

    if( *cid == NULL)
    {
        *cid = (*env)->GetMethodID(env, class, "<init>", signature);
        if( *cid == NULL )
        {
            (*env)->DeleteLocalRef(env, class);
            return NULL; /* can't find/get the method, exception thrown */
        }
    }

    result = (*env)->NewObjectA(env, class, *cid, value);

    (*env)->DeleteLocalRef(env, class);
    return result;
}

jobject create_Boolean(JNIEnv *env, jboolean boolean_value)
{
    static jmethodID cid = NULL;
    jvalue value;

    value.z = boolean_value;

    return create_Object(env, &cid, "java/lang/Boolean", "(Z)V", &value);
}

jobject create_Integer(JNIEnv *env, jint int_value)
{
    static jmethodID cid = NULL;
    jvalue value;

    value.i = int_value;

    return create_Object(env, &cid, "java/lang/Integer", "(I)V", &value);
}

jobject create_Long(JNIEnv *env, jlong long_value)
{
    static jmethodID cid = NULL;
    jvalue value;

    value.j = long_value;

    return create_Object(env, &cid, "java/lang/Long", "(J)V", &value);
}

jobject create_Float(JNIEnv *env, jfloat float_value)
{
    static jmethodID cid = NULL;
    jvalue value;

    value.f = float_value;

    return create_Object(env, &cid, "java/lang/Float", "(F)V", &value);
}

jobject create_Double(JNIEnv *env, jdouble double_value)
{
    static jmethodID cid = NULL;
    jvalue value;

    value.d = double_value;

    return create_Object(env, &cid, "java/lang/Double", "(D)V", &value);
}

jobject create_Character(JNIEnv *env, jchar char_value)
{
    static jmethodID cid = NULL;
    jvalue value;

    value.c = char_value;

    return create_Object(env, &cid, "java/lang/Character", "(C)V", &value);
}


jobject create_Insets(JNIEnv *env, GtkBorder *border)
{
    static jmethodID cid = NULL;
    jvalue values[4];

    values[0].i = border->top;
    values[1].i = border->left;
    values[2].i = border->bottom;
    values[3].i = border->right;

    return create_Object(env, &cid, "java/awt/Insets", "(IIII)V", values);
}

/*********************************************/
jstring gtk2_get_pango_font_name(JNIEnv *env, WidgetType widget_type)
{
    init_containers();

    gtk2_widget = gtk2_get_widget(widget_type);
    jstring  result = NULL;
    GtkStyle* style = gtk2_widget->style;

    if (style && style->font_desc)
    {
        gchar* val = (*fp_pango_font_description_to_string)(style->font_desc);
        result = (*env)->NewStringUTF(env, val);
        (*fp_g_free)( val );
    }

    return result;
}

/***********************************************/
jobject get_string_property(JNIEnv *env, GtkSettings* settings, const gchar* key)
{
    jobject result = NULL;
    gchar*  strval = NULL;

    (*fp_g_object_get)(settings, key, &strval, NULL);
    result = (*env)->NewStringUTF(env, strval);
    (*fp_g_free)(strval);

    return result;
}
/*
jobject get_integer_property(JNIEnv *env, GtkSettings* settings, const gchar* key)
{
    gint    intval = NULL;

    (*fp_g_object_get)(settings, key, &intval, NULL);
    return create_Integer(env, intval);
}*/

jobject gtk2_get_setting(JNIEnv *env, Setting property)
{
    GtkSettings* settings = (*fp_gtk_settings_get_default)();

    switch (property)
    {
        case GTK_FONT_NAME:
            return get_string_property(env, settings, "gtk-font-name");
        case GTK_ICON_SIZES:
            return get_string_property(env, settings, "gtk-icon-sizes");
    }

    return NULL;
}

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